CN109559679B - Touch display panel, driving method thereof, pixel circuit and electronic device - Google Patents

Abstract

A touch display panel and a driving method thereof, a pixel circuit, and an electronic device. The touch display panel includes: a plurality of sub-pixel groups and a plurality of data lines, wherein each of the sub-pixel groups includes a plurality of sub-pixels located in the same row and sharing a data line, and the data line is configured to provide a data signal to the sub-pixel group; a plurality of touch electrodes and a plurality of touch lines, wherein each of the touch electrodes is electrically connected to a touch line, and the data line and the touch line are arranged in the same layer. The touch display panel realizes the touch function without increasing the process by making a plurality of sub-pixels in the same row share a data line and forming a touch line at the position of a virtual data line, while optimizing the wiring structure of the touch display panel.

Description

Touch display panel and driving method thereof, pixel circuit, and electronic device

Technical Field

Embodiments of the present disclosure relate to a touch display panel and a driving method thereof, a pixel circuit, and an electronic device.

Background technique

Compared with liquid crystal display (LCD), organic light emitting diode (OLED) display panel has the characteristics of self-luminescence, high contrast, low energy consumption, wide viewing angle, fast response speed, can be used for flexible panels, wide operating temperature range, simple manufacturing, etc., and has broad development prospects. OLED display panels can be widely used in electronic products such as mobile phones, computers, full-color TVs, digital cameras, personal digital assistants, etc.

With the development of touch technology, electronic devices with touch functions have been widely used in people's lives and work, and OLED display panels with touch functions have become a research hotspot in the display field. Touch screens can be divided into capacitive, electromagnetic, resistive and optical types. Capacitive touch screens can be divided into add-on touch panels, on-cell touch panels and in-cell touch panels. In-cell touch panels can embed touch electrodes in OLED display panels to achieve touch and display integration, thereby reducing the production cost of touch screens, reducing the thickness of touch screens, and reducing the volume and weight of touch screens.

Summary of the invention

At least one embodiment of the present disclosure provides a touch display panel, comprising: a plurality of sub-pixel groups and a plurality of data lines, wherein each of the sub-pixel groups comprises a plurality of sub-pixels located in the same row and sharing a data line, and the data line is configured to provide data signals to the sub-pixel groups; a plurality of touch electrodes and a plurality of touch lines, wherein each of the touch electrodes is electrically connected to a touch line, and the data lines and the touch lines are arranged in the same layer.

For example, in the touch display panel provided in an embodiment of the present disclosure, there is at least one data line between two adjacent touch lines.

For example, in a touch display panel provided in an embodiment of the present disclosure, the data lines and the touch lines are made of the same material.

For example, the touch display panel provided in an embodiment of the present disclosure further includes a plurality of gate lines. The plurality of sub-pixels in each of the sub-pixel groups are respectively connected to the plurality of gate lines, and the plurality of gate lines are configured to provide scanning signals to the plurality of sub-pixels respectively.

For example, in the touch display panel provided in an embodiment of the present disclosure, each of the sub-pixels includes an organic light-emitting element, and the touch electrode is reused as a cathode or an anode of the organic light-emitting element of at least one of the sub-pixels.

For example, in a touch display panel provided in an embodiment of the present disclosure, each sub-pixel further includes a sub-pixel circuit configured to receive the scan signal and the data signal from a gate line and a data line connected to the sub-pixel to drive the organic light emitting element to emit light.

For example, in the touch display panel provided in one embodiment of the present disclosure, the sub-pixel circuit includes: a light-emitting driving circuit, configured to drive the organic light-emitting element to emit light; a light-emitting selection circuit, configured to write the data signal into the control end of the light-emitting driving circuit according to the scanning signal; a storage circuit, configured to store the data signal and keep it at the control end of the light-emitting driving circuit; a compensation circuit, configured to compensate the light-emitting driving circuit; and a light-emitting control circuit, configured to control the driving current to flow through the light-emitting driving circuit.

For example, in the touch display panel provided by an embodiment of the present disclosure, in each of the sub-pixel groups, the light emitting selection circuits of the plurality of sub-pixels that share the data line are all connected to the shared data line.

For example, the touch display panel provided in one embodiment of the present disclosure further includes a plurality of light-emitting control lines. The plurality of sub-pixels in each sub-pixel group share a light-emitting control line, the light-emitting control line is configured to provide the sub-pixel group with a light-emitting control signal for controlling the plurality of sub-pixels in the sub-pixel group to emit light, and the light-emitting control circuits of the plurality of sub-pixels sharing the light-emitting control line are all connected to the shared light-emitting control line.

At least one embodiment of the present disclosure further provides a pixel circuit, comprising a plurality of sub-pixel circuits configured to receive data signals from a shared data line to respectively drive the organic light-emitting elements of a plurality of sub-pixels in a sub-pixel group located in the same row and connected to the shared data line to emit light.

For example, in a pixel circuit provided in an embodiment of the present disclosure, each of the sub-pixel circuits includes: a light-emitting driving circuit configured to drive the organic light-emitting element of the corresponding sub-pixel in the sub-pixel group to emit light; a light-emitting selection circuit configured to write the data signal into the control end of the light-emitting driving circuit; a storage circuit configured to store the data signal and keep it at the control end of the light-emitting driving circuit; a compensation circuit configured to compensate the light-emitting driving circuit; and a light-emitting control circuit configured to control the driving current to flow through the light-emitting driving circuit. The light-emitting selection circuits of the plurality of sub-pixel circuits are all connected to the shared data line.

For example, in a pixel circuit provided in an embodiment of the present disclosure, the light-emitting control circuit includes two light-emitting control sub-circuits, which are respectively configured to be electrically connected to the first end and the second end of the light-emitting driving circuit, and the two light-emitting control sub-circuits are configured to be controlled by the same light-emitting control signal.

For example, in a pixel circuit provided by an embodiment of the present disclosure, the light emitting control circuits of the plurality of sub-pixel circuits are configured to be connected to the same light emitting control line.

For example, in a pixel circuit provided in an embodiment of the present disclosure, each of the sub-pixel circuits further includes a reset circuit configured to reset the light-emitting drive circuit, and the reset circuits of the plurality of sub-pixel circuits are configured to be connected to the same reset control line.

For example, in a pixel circuit provided in an embodiment of the present disclosure, the light-emitting driving circuit includes a driving transistor, the light-emitting selection circuit includes a selection transistor, the storage circuit includes a storage capacitor, the compensation circuit includes a compensation transistor, the light-emitting control circuit includes a first control transistor and a second control transistor, and the reset circuit includes a reset transistor. In each of the sub-pixel circuits, a first electrode of the driving transistor is connected to a first node, a second electrode of the driving transistor is connected to a second node, a gate of the driving transistor is connected to a third node, a first electrode of the selection transistor is connected to the common data line to receive the data signal, a second electrode of the selection transistor is connected to the first node, a gate of the selection transistor is configured to receive a scan signal, a first end of the storage capacitor is connected to the third node, a second end of the storage capacitor is connected to a power supply terminal, a first electrode of the compensation transistor is connected to the second node, a second electrode of the compensation transistor is connected to the third node, a gate of the compensation transistor is configured to receive the scan signal, a first electrode of the first control transistor is connected to an organic light emitting element of the corresponding sub-pixel, a second electrode of the first control transistor is connected to the first node, a gate of the first control transistor is configured to receive a light emission control signal, a first electrode of the second control transistor is connected to the second node, a second electrode of the second control transistor is connected to the power supply terminal, a gate of the second control transistor is configured to receive the light emission control signal, a first electrode of the reset transistor is configured to receive a reset voltage, a second electrode of the reset transistor is connected to the third node, and a gate of the reset transistor is connected to the reset control line.

At least one embodiment of the present disclosure further provides an electronic device, comprising any of the above-mentioned touch display panels.

At least one embodiment of the present disclosure also provides a method for driving a touch display panel according to any one of the above items, comprising: in a display stage, providing the data signal to multiple sub-pixels in the sub-pixel group respectively through the common data line to drive the multiple sub-pixels in the sub-pixel group to emit light; in a touch stage, applying a touch drive signal to the touch electrode via the touch line, and reading the touch sensing signal of the touch electrode through the touch line.

For example, in a driving method provided in an embodiment of the present disclosure, each of the sub-pixels includes an organic light-emitting element, and the touch electrode is reused as a cathode or an anode of the organic light-emitting element of at least one of the sub-pixels. In the display stage, an electrode voltage signal is applied to the touch electrode via the touch line; in the touch stage, the touch drive signal is applied to the touch electrode via the touch line.

For example, in the driving method provided in one embodiment of the present disclosure, each of the sub-pixels also includes a sub-pixel circuit, and the sub-pixel circuit includes a light-emitting driving circuit, a compensation circuit, a light-emitting control circuit and a reset circuit, and the display stage includes: a reset stage, providing a reset control signal to the reset circuits of the multiple sub-pixels to reset the light-emitting driving circuits of the multiple sub-pixels; a compensation stage, providing a scanning signal to the compensation circuits of the multiple sub-pixels in a time-sharing manner to compensate the light-emitting driving circuits of the multiple sub-pixels respectively; and a light-emitting stage, providing a light-emitting control signal to the light-emitting control circuits of the multiple sub-pixels to drive the multiple sub-pixels to emit light.

For example, in the driving method provided in one embodiment of the present disclosure, in the touch control stage, the light emitting control signal is applied to disconnect the electrical connection between the sub-pixel circuit and the organic light emitting element; and the reset control signal, the scanning signal and the light emitting control signal are modulated.

The embodiments of the present disclosure provide a touch display panel and a driving method thereof, a pixel circuit, and an electronic device. By making multiple sub-pixels in the same row share a data line, a touch line is formed at the position of a dummy data line, thereby realizing the touch function without increasing the process steps and optimizing the wiring structure of the touch panel.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present disclosure, rather than limiting the present disclosure.

FIG1A is a schematic plan view of a touch display panel provided in accordance with an embodiment of the present disclosure;

FIG1B is a schematic plan view of another touch display panel provided by an embodiment of the present disclosure;

FIG2 is a schematic plan view of another touch display panel provided by an embodiment of the present disclosure;

FIG3 is a schematic diagram of the arrangement of touch electrodes of a touch display panel provided by an embodiment of the present disclosure;

FIG4 is a schematic diagram of a cross-sectional structure of a touch display panel provided in an embodiment of the present disclosure;

FIG5A is a schematic diagram of a first sub-pixel circuit provided in accordance with an embodiment of the present disclosure;

FIG5B is a schematic diagram of a second sub-pixel circuit provided in accordance with an embodiment of the present disclosure;

FIG6A is a schematic diagram of another first sub-pixel circuit provided in an embodiment of the present disclosure;

FIG6B is a schematic diagram of another second sub-pixel circuit provided in an embodiment of the present disclosure;

FIG7 is a schematic diagram of a pixel circuit provided by an embodiment of the present disclosure;

FIG8 is a schematic diagram of another pixel circuit provided by an embodiment of the present disclosure;

FIG9 is a schematic block diagram of an electronic device provided by an embodiment of the present disclosure;

FIG10 is a flow chart of a driving method provided by an embodiment of the present disclosure;

FIG11A is a schematic diagram of the pixel circuit shown in FIG8 during a reset phase;

FIG11B is a timing diagram of the pixel circuit shown in FIG11A during a reset phase;

FIG12A is a schematic diagram of the first stage of the compensation phase of the pixel circuit shown in FIG8 ;

FIG12B is a timing diagram of the first stage of the compensation phase of the pixel circuit shown in FIG12A ;

FIG13A is a schematic diagram of the second stage of the compensation phase of the pixel circuit shown in FIG8 ;

FIG13B is a timing diagram of the second stage of the compensation stage of the pixel circuit shown in FIG13A;

FIG14A is a schematic diagram of the pixel circuit shown in FIG8 during a light emitting phase;

FIG14B is a timing diagram of the light emitting phase of the pixel circuit shown in FIG14A ;

FIG15A is a schematic diagram of the pixel circuit shown in FIG8 during a touch control phase; and

FIG. 15B is a timing diagram of the pixel circuit shown in FIG. 15A during the touch control phase.

Detailed ways

In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

In order to keep the following description of the embodiments of the present disclosure clear and concise, the present disclosure omits detailed descriptions of well-known functions and well-known components.

Generally, touch technologies include capacitive touch technology, electromagnetic touch technology, resistive touch technology, and optical touch technology. Capacitive touch technology has developed rapidly due to its advantages such as low cost, wear resistance, and long life. Organic light emitting diode (OLED) display panels with touch functions can use capacitive touch technology.

At present, the flexible OLED touch panel needs to directly form a multi-layer touch structure on the thin film encapsulation (Thin Film Encapsulation, TFE) structure, which not only increases the difficulty of making the flexible OLED touch panel, but also increases the production cost of the flexible OLED touch panel. In addition, even if the thin film bonding technology is adopted, the bending requirements of the flexible OLED touch panel are difficult to meet. The embedded touch screen can embed the touch electrode in the display panel, reduce the thickness of the touch screen, and thus meet the bending requirements of the flexible touch panel. The embedded touch screen can include structures such as hybrid embedded (Hybrid In-Cell, HIC) and full multi-point embedded (Full In Cell, FIC). FIC adopts a single-layer touch routing design and uses the principle of self-capacitance to achieve multi-point touch.

The embodiments of the present disclosure provide a touch display panel and a driving method thereof, a pixel circuit, and an electronic device. By making multiple sub-pixels in the same row share a data line, a touch line is formed at the position of a dummy data line, thereby realizing the touch function without increasing the process steps and optimizing the wiring structure of the touch display panel.

For example, according to the characteristics of transistors, transistors can be divided into N-type transistors and P-type transistors. For the sake of clarity, the embodiments of the present disclosure take the transistor as a P-type transistor as an example to elaborate on the technical solution of the present disclosure in detail. However, the transistors of the embodiments of the present disclosure are not limited to P-type transistors. Those skilled in the art can also use N-type transistors to implement the functions of one or more transistors in the embodiments of the present disclosure according to actual needs.

It should be noted that the transistors used in the embodiments of the present disclosure may be thin film transistors or field effect transistors or other switching devices with the same characteristics, and the source and drain of the transistor may be symmetrical in structure, so the source and drain may be indistinguishable in physical structure. In the embodiments of the present disclosure, in order to distinguish the gate electrode of the transistor except for the control electrode, one of the electrodes is directly described as the first electrode and the other electrode is directly described as the second electrode, so the first electrode and the second electrode of all or part of the transistors in the embodiments of the present disclosure can be interchangeable as needed.

The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings, but the present disclosure is not limited to these specific embodiments.

FIG1A is a schematic plan view of a touch display panel provided in an embodiment of the present disclosure, FIG1B is a schematic plan view of another touch display panel provided in an embodiment of the present disclosure, FIG2 is a schematic plan view of yet another touch display panel provided in an embodiment of the present disclosure, and FIG3 is a schematic diagram of the touch electrode arrangement of a touch display panel provided in an embodiment of the present disclosure. It should be noted that in FIG1A, FIG1B and FIG2, the data line 16 is represented by a dotted line, and the touch line 15 is represented by a solid line.

For example, as shown in FIG1A , the touch display panel provided by the embodiment of the present disclosure includes a substrate 38 and a plurality of sub-pixel groups 10, a plurality of data lines 16, a plurality of touch electrodes 20, and a plurality of touch lines 15 disposed on the substrate 38. Each sub-pixel group 10 includes a plurality of sub-pixels located in the same row and sharing a data line 16, and the data line 16 is configured to provide data signals to the plurality of sub-pixels in the same sub-pixel group 10. For example, the plurality of touch electrodes 20 are electrically connected to the plurality of touch lines 15 in a one-to-one correspondence. The data lines 16 and the touch lines 15 are disposed in the same layer and are parallel to each other.

For example, during the preparation process, the touch line 15 and the data line 16 can be formed by the same metal film and the same patterning process, so that the data line 16 and the touch line 15 are formed by the same material, thereby reducing the process steps and saving production costs. Compared with the traditional touch display panel without sharing data lines, the touch display panel according to the embodiment of the present disclosure, because multiple sub-pixels in each sub-pixel group share one data line, the number of data lines can be reduced (for example, it can be reduced to half of the original number or less), so the position of the vacant data line on the touch panel can be used to prepare the touch line, thereby realizing the touch function without increasing the process, and optimizing the wiring structure of the touch display panel. It should be noted that the position of the vacant data line is the position of the virtual data line.

For example, in one example, each sub-pixel group 10 includes two sub-pixels located in two sub-columns of a row, as shown in FIG1A , and the two sub-pixels are respectively a first sub-pixel 101 and a second sub-pixel 102. It should be noted that each sub-pixel group 10 may include a plurality of sub-pixels (e.g., three, four, etc.), and the embodiment of the present disclosure is not limited to this. In the following description of the present disclosure, each sub-pixel group 10 including two sub-pixels is taken as an example for detailed description.

For example, the first sub-pixel 101 may be a red sub-pixel, a blue sub-pixel, a green sub-pixel, or a white sub-pixel. The second sub-pixel 102 may be a red sub-pixel, a blue sub-pixel, a green sub-pixel, or a white sub-pixel. The disclosed embodiment does not limit the color of each sub-pixel in the sub-pixel group 10.

For example, as shown in FIG1A , a plurality of sub-pixel groups 10 may be arranged in a plurality of rows and columns. A plurality of data lines 16 extend along the column direction of the sub-pixel group 10, and the column direction of the sub-pixel group 10 is the Y direction in the figure. The touch lines 15 also extend along the column direction of the plurality of sub-pixel groups 10. The data lines 16 and the touch lines 15 are parallel to each other and arranged alternately. Since the touch accuracy is generally lower than the sub-pixel accuracy, a touch electrode 20 may correspond to a plurality of sub-pixels or a plurality of sub-pixel groups, so that at least one data line 16 may be provided between two adjacent touch lines 15. For example, as shown in FIG1A , two data lines 16 are provided between two adjacent touch lines 15. However, it is not limited thereto, when the touch accuracy is substantially the same as the sub-pixel accuracy, for example, when a touch electrode corresponds to a sub-pixel or a sub-pixel group, a data line 16 may not be provided between two adjacent touch lines 15.

For example, as shown in FIG1A , the touch line 15 may be disposed between two adjacent sub-pixel groups 10 in the same row. However, the present invention is not limited thereto, and the touch line 15 may also be disposed between two adjacent sub-pixels in the same row in the sub-pixel group 10. As shown in FIG2 , in one example, when the sub-pixel group 10 includes a first sub-pixel 101, a second sub-pixel 102, and a third sub-pixel 103, if the data line 16 is disposed between the first sub-pixel 101 and the second sub-pixel 102, the touch line 15 may be disposed between the second sub-pixel 102 and the third sub-pixel 103.

For example, a plurality of sub-pixel groups 10 in the same column may share one data line 16 .

For example, in a direction perpendicular to the substrate 38, each touch electrode 20 overlaps with at least one sub-pixel group 10. "Overlap" may include complete overlap or partial overlap. For example, "partial overlap" may mean that, in a direction perpendicular to the substrate 38, each touch electrode 20 overlaps with the organic light-emitting elements of multiple sub-pixels in at least one sub-pixel group 10. That is, the orthographic projection of each touch electrode 20 on the substrate 38 may be located within the orthographic projection of at least one sub-pixel group 10 on the substrate 38. However, not limited to this, "partial overlap" may also mean that the orthographic projection of at least one sub-pixel group 10 on the substrate 38 is located within the orthographic projection of each touch electrode 20 on the substrate 38. In the example shown in FIG. 1A, each touch electrode 20 overlaps with four sub-pixel groups 10. However, not limited to this, each touch electrode 20 may also overlap with three or five sub-pixel groups 10. The embodiments of the present disclosure are not limited to this.

For example, as shown in FIG. 3 , a plurality of touch electrodes 20 may be arranged in an array on a substrate 38 . These touch electrodes 20 constitute a self-capacitive electrode array, and thus may be used for touch detection.

For example, the multiple touch electrodes 20 may have the same shape, thereby ensuring that the electrical characteristics of the multiple touch electrodes 20 are substantially consistent, thereby ensuring the accuracy of touch detection and the uniformity of the display image. However, the multiple touch electrodes 20 may also have different shapes.

For example, as shown in FIG3 , the shape of the touch electrode 20 may be rectangular, such as a square. However, the shape of the touch electrode 20 may also be circular, trapezoidal, etc., according to actual design requirements. The embodiment of the present disclosure does not specifically limit the shape of the touch electrode 20.

The touch display panel provided by the embodiment of the present disclosure enables multiple sub-pixels in the same row to share a data line, and forms a touch line at the position of a virtual data line (i.e., an empty data line), thereby realizing the touch function without increasing the process flow and optimizing the wiring structure of the touch display panel.

For example, each sub-pixel may include an organic light-emitting element. The organic light-emitting element may be an organic light-emitting diode (OLED). The organic light-emitting diode is configured to receive a light-emitting signal (for example, a current signal) when in operation, and emit light of an intensity corresponding to the light-emitting signal. It should be noted that in the embodiments of the present disclosure, the organic light-emitting element is an organic light-emitting diode as an example for description. However, it is not limited to this, and the organic light-emitting element may also be a quantum dot light-emitting diode (QLED) or the like. The present disclosure is not limited to this.

FIG. 4 is a schematic diagram of a cross-sectional structure of a touch display panel provided in an embodiment of the present disclosure.

For example, the touch electrode 20 can be reused as the cathode or anode of the organic light-emitting element of at least one sub-pixel. As shown in FIG4 , the organic light-emitting diode 111 may include a first electrode 1111, an organic layer 1112, and a second electrode 1113, and the organic layer 1112 is disposed between the first electrode 1111 and the second electrode 1113. For example, the first electrode 1111 may be an anode or a cathode, and correspondingly, the second electrode 1113 may be a cathode or an anode. The touch electrode 20 may include a second electrode 1113, that is, the touch electrode 20 realizing the touch function may be the anode or cathode of the organic light-emitting diode 111, and the touch electrode 20 is integrated in the display panel, and touch and display integration can be realized by time-division multiplexing without adding additional processes. At the same time, when the touch display panel is a curved display panel, the touch display panel can improve the stability of the flexible display.

It should be noted that the arrangement and materials of the first electrode 1111 , the organic layer 1112 , and the second electrode 1113 may refer to common designs, and the embodiments of the present disclosure are not limited thereto.

For example, the organic light emitting diodes 111 in different sub-pixels can emit light of different colors, such as red light, green light, blue light and white light, so as to realize color display. For example, the light emitting layer in the organic layer 1112 can use different light emitting materials to realize light emission of different colors.

For example, the touch electrode 20 includes the second electrode 1113, so the touch electrode 20 can be made of the same material as the second electrode 1113. In the example shown in FIG4 , the organic light emitting diode 111 is, for example, a top-emitting light emitting diode, the first electrode 1111 is an anode, and the second electrode 1113 is a cathode, and the second electrode 1113 is formed of a transparent conductive material (for example, ITO, etc.) or a semi-transparent metal material or a combination of the two. In other words, the touch electrode 20 can be formed of a transparent conductive material or a semi-transparent metal material.

For example, as shown in FIG4 , the touch display panel may further include a flat layer 32 and a pixel defining layer 31, wherein the flat layer 32 covers the touch line 15, the pixel defining layer 31 is disposed on the flat layer 32, and the touch electrode 20 is disposed on the pixel defining layer 31. The flat layer 32 and the pixel defining layer 31 are provided with connection holes 150, the connection holes 150 penetrate the pixel defining layer 31 and the flat layer 32, thereby exposing the connection blocks 151, and the connection blocks 151 are integrally formed with or electrically connected to the touch line 15. The touch electrode 20 may be electrically connected to the touch line 15 through the connection holes 150 and the connection blocks 151.

For example, only one connection hole 150 may be provided in the planar layer 32 and the pixel defining layer 31 , or a plurality of connection holes 150 may be provided. The plurality of connection holes 150 may reduce the contact resistance between the touch electrode 20 and the touch wire 15 .

For example, the touch display panel also includes a plurality of gate lines. A plurality of sub-pixels in each sub-pixel group 10 are connected one-to-one with a plurality of different gate lines, and a plurality of gate lines are configured to provide scanning signals to a plurality of sub-pixels respectively. For example, as shown in Figure 1A, a plurality of gate lines extend along the row direction of the sub-pixel group 10, and the row direction extension of the sub-pixel group 10 is the X direction in the figure. In one example, the touch display panel may include a first gate line 17 and a second gate line 18. The first sub-pixel 101 in the plurality of sub-pixel groups 10 in the same row is all connected with the first gate line 17, and the second sub-pixel 102 in the plurality of sub-pixel groups 10 in the same row is all connected with the second gate line 18.

It should be noted that a plurality of sub-pixel groups 10 located in the same row can also be connected to the same gate line, that is, all sub-pixels located in the same row are connected to the same gate line. For example, in the example shown in FIG. 1B , in each sub-pixel group 10, a first sub-pixel 101 and a second sub-pixel 102 can share a gate line. At this time, the first sub-pixel 101 and the second sub-pixel 102 can be connected to the shared gate line, for example, through different types of transistors (for example, P-type transistors and N-type transistors), and when the scanning signal provided by the shared gate line has a first polarity, the shared data line 16 transmits the data signal to the first sub-pixel 101; when the scanning signal provided by the shared gate line has a second polarity, the shared data line 16 transmits the data signal to the second sub-pixel 102. For example, the first polarity is positive, the second polarity is negative, or the first polarity is negative, and the second polarity is positive.

For example, as shown in FIG4 , each sub-pixel may include a driving transistor T1, and the driving transistor T1 is used to drive the organic light emitting diode 111 to emit light and control the magnitude of the current flowing through the organic light emitting diode 111, so that grayscale display can be achieved. For example, the data line 16 and the touch line 15 may be located in the same layer as the gate or source/drain of the driving transistor T1, so that the touch line 15, the data line 16 and the gate or source/drain may be formed by the same metal film and by the same patterning process, which may further reduce the process steps and save production costs.

For example, the data line 16 and the touch line 15 can be located in the same layer as the source/drain and formed of the same material. Since the impedance of the source/drain metal wiring is very low, its square resistance is generally about 0.07 ohms, so the impact on the voltage drop (IR drop) is very small, so that the IR drop of the cathode or anode of the organic light emitting diode 111 can be minimized, while meeting the best self-capacitive touch effect and improving display uniformity. In addition, the touch electrode 20 can be a square electrode and evenly distributed in an array, so that the touch accuracy and effect can be effectively improved.

As shown in FIG4 , in one example, the driving transistor T1 adopts a top gate structure, for example. The driving transistor T1 includes an active layer 35, a gate insulating layer 37, a gate 36, a source 33, and a drain 34, which are sequentially arranged on a substrate 38. The data line 16 and the touch line 15 are located in the same layer as the source 33 and the drain 34 of the driving transistor T1, so that the data line 16 and the touch line 15 can be formed simultaneously with the source 33 and the drain 34 of the driving transistor T1 using the same patterning process.

FIG5A is a schematic diagram of a first sub-pixel circuit provided in accordance with an embodiment of the present disclosure; FIG5B is a schematic diagram of a second sub-pixel circuit provided in accordance with an embodiment of the present disclosure.

For example, the touch display panel provided in the embodiment of the present disclosure adopts an active drive method, so that each sub-pixel also includes a sub-pixel circuit. In each sub-pixel, the sub-pixel circuit is configured to receive a scan signal and a data signal from a gate line and a data line 15 connected to the sub-pixel to drive the organic light-emitting diode 111 to emit light during the display phase. In the embodiment of the present disclosure, the sub-pixel circuit can be implemented in various forms, such as a conventional 2T1C sub-pixel circuit, and other types of sub-pixel circuits developed on this basis can also be used, and these sub-pixel circuits can further have compensation functions, etc.

For example, as shown in FIG5A , the first sub-pixel 101 includes a first sub-pixel circuit 105 and a first organic light emitting diode OLED1. The first sub-pixel circuit 105 may include a first light emitting driving circuit 501, a first light emitting selection circuit 502, and a first storage circuit 503. For example, the first light emitting driving circuit 501 is configured to drive the first organic light emitting diode OLED1 to emit light; the first light emitting selection circuit 502 is configured to write the first data signal V _data1 into the control end of the first light emitting driving circuit 501 according to the first scanning signal S1; and the first storage circuit 503 is configured to store the first data signal V _data1 and keep it at the control end of the first light emitting driving circuit 501. For example, the specific forms of the first light emitting driving circuit 501, the first light emitting selection circuit 502, and the first storage circuit 503 may be set according to actual application requirements, and the embodiments of the present disclosure are not specifically limited thereto.

For example, in one example, as shown in FIG5A , the first sub-pixel circuit 105 may further include a first light emitting control circuit 504. The first light emitting control circuit 504 is configured to control the driving current to flow through the first light emitting driving circuit 501 according to the light emitting control signal EM, thereby allowing the first light emitting driving circuit 501 to drive the first organic light emitting diode OLED1 to emit light in the light emitting stage.

For example, in the example shown in Figure 5A, the first sub-pixel circuit 105 can be implemented as a 3T1C circuit, in which a first light-emitting control circuit 504 is added on the basis of the traditional 2T1C, that is, three TFTs (Thin-film transistors) and a storage capacitor are used to achieve the basic function of driving the first organic light-emitting diode OLED1 to emit light.

For example, as shown in FIG5B , in one example, the second sub-pixel 102 includes a second sub-pixel circuit 106 and a second organic light emitting diode OLED2. The second sub-pixel circuit 106 includes a second light emitting driving circuit 601, a second light emitting selection circuit 602, a second storage circuit 603, and a second light emitting control circuit 604. The functions and structures of the components in the second sub-pixel circuit 106 are similar to those of the components in the first sub-pixel circuit 105, except that the second light emitting selection circuit 602 is configured to write the second data signal V _data2 into the control terminal of the second light emitting driving circuit 601 according to the second scanning signal S2. The remaining relevant descriptions of the second sub-pixel circuit 106 can refer to the relevant descriptions of the first sub-pixel circuit 105, and the repeated parts will not be repeated.

For example, in each sub-pixel group, the light-emitting selection circuits of the plurality of sub-pixels sharing a data line are all connected to the shared data line. The shared data line can provide data signals to the plurality of sub-pixels in the sub-pixel group in a time-sharing manner. As shown in FIGS. 5A and 5B , the first light-emitting selection circuit 502 and the second light-emitting selection circuit 602 are both connected to the shared data line 16. The shared data line 16 can provide a first data signal V _data1 and a second data signal V _data2 in a time-sharing manner. The first data signal V _data1 is transmitted to the first light-emitting selection circuit 502, and the second data signal V _data2 is transmitted to the second light-emitting selection circuit 602.

For example, according to actual operation conditions, the first data signal V _data1 and the second data signal V _data2 may be the same or different. When the first data signal V _data1 and the second data signal V _data2 are the same, the first data signal V _data1 and the second data signal V _data2 may be transmitted to the first light emitting selection circuit 502 and the second light emitting selection circuit 602 at the same time.

For example, the touch display panel further includes a plurality of light emission control lines. The light emission control lines are configured to provide light emission control signals for controlling the light emission of a plurality of sub-pixels in the sub-pixel group 10. A plurality of sub-pixels in each sub-pixel group 10 may share one light emission control line. The light emission control circuits of the plurality of sub-pixels sharing the light emission control line are all connected to the shared light emission control line, so that the plurality of sub-pixels sharing the light emission control line can be controlled to emit light simultaneously.

For example, as shown in FIG5A and FIG5B , the first light-emitting control circuit 504 and the second light-emitting control circuit 604 are both connected to the shared light-emitting control line 19 and are controlled by the same light-emitting control signal EM. However, the present invention is not limited thereto, and the first light-emitting control circuit 504 and the second light-emitting control circuit 604 may also be connected to different light-emitting control lines 19, and the light-emitting control signals EM applied to the different light-emitting control lines 19 are synchronized.

For example, the light emitting control circuit of each sub-pixel may include two light emitting control sub-circuits. The two light emitting control sub-circuits are respectively arranged to be electrically connected to the first end and the second end of the light emitting driving circuit of each sub-pixel. The two light emitting control sub-circuits are configured to be controlled by the same light emitting control signal, so that the two light emitting control sub-circuits can work synchronously.

For example, multiple sub-pixel groups in the same row may share a light-emitting control line, so that the light-emitting control circuits of the multiple sub-pixels in the same row may be controlled by the same light-emitting control signal to control the organic light-emitting elements of the multiple sub-pixels in the same row to emit light simultaneously.

FIG6A is a schematic diagram of another first sub-pixel circuit provided in accordance with an embodiment of the present disclosure; FIG6B is a schematic diagram of another second sub-pixel circuit provided in accordance with an embodiment of the present disclosure.

For example, as shown in Figures 6A and 6B, in one example, the first light emission control circuit 504 may include a first light emission control subcircuit 5041 and a second light emission control subcircuit 5042, and the second light emission control circuit 604 may include a third light emission control subcircuit 6041 and a fourth light emission control subcircuit 6042. For example, the first light emission control subcircuit 5041, the second light emission control subcircuit 5042, the third light emission control subcircuit 6041 and the fourth light emission control subcircuit 6042 are all connected to the shared light emission control line 19 and are configured to be controlled by the same light emission control signal EM, so that the first organic light emitting diode OLED1 and the second organic light emitting diode OLED2 can be controlled to emit light simultaneously.

For example, as shown in FIGS. 6A and 6B , the first light-emitting control subcircuit 5041 is disposed between the first terminal a1 of the first light-emitting driving circuit 501 and the first organic light-emitting diode OLED1, and is configured to control the first light-emitting driving circuit 501 and the first organic light-emitting diode OLED1 to be turned on or off. The second light-emitting control subcircuit 5042 is disposed between the first power supply terminal V1 and the second terminal a2 of the first light-emitting driving circuit 501, to control the first power supply terminal V1 and the first light-emitting driving circuit 501 to be turned on or off. The third light-emitting control subcircuit 6041 is disposed between the first terminal b1 of the second light-emitting driving circuit 601 and the second organic light-emitting diode OLED2, and is configured to control the second light-emitting driving circuit 601 and the second organic light-emitting diode OLED2 to be turned on or off. The fourth light-emitting control subcircuit 6042 is disposed between the first power supply terminal V1 and the second terminal b2 of the second light-emitting driving circuit 601, to control the first power supply terminal V1 and the second light-emitting driving circuit 601 to be turned on or off.

For example, according to actual application requirements, the sub-pixel circuit of each sub-pixel may also have an electrical compensation function to improve the display uniformity of the touch display panel. For example, the compensation function may be implemented by voltage compensation, current compensation or mixed compensation, and the sub-pixel circuit with the compensation function may be, for example, 4T2C, 6T1C or other sub-pixel circuits with electrical compensation functions.

Therefore, for example, the sub-pixel circuit of each sub-pixel may further include a compensation circuit. The compensation circuit is configured to compensate the light-emitting driving circuit. The compensation circuit may be an internal compensation circuit or an external compensation circuit. For another example, the sub-pixel circuit of each sub-pixel may further include a reset circuit. The reset circuit is configured to reset the control terminal of the light-emitting driving circuit.

For example, in the examples shown in FIGS. 6A and 6B , the sub-pixel circuit with compensation function can be implemented as a 6T1C circuit. The first sub-pixel circuit 105 further includes a first compensation circuit 505, and the second sub-pixel circuit 106 further includes a second compensation circuit 605. The first compensation circuit 505 and the second compensation circuit 605 are internal compensation circuits. The first compensation circuit 505 is configured to compensate the first light-emitting driving circuit 501. The second compensation circuit 605 is configured to compensate the second light-emitting driving circuit 601.

For example, the first compensation circuit 505 and the second compensation circuit 605 may also be external compensation circuits, which may include a sensing circuit portion to sense the electrical characteristics of the light-emitting driving circuit or the electrical characteristics of the organic light-emitting element; and compensate the data signal according to the sensed electrical characteristics. The specific structure of the external compensation circuit can refer to the conventional design, which will not be described here.

For example, as shown in FIG6A and FIG6B , the first sub-pixel circuit 105 may further include a first reset circuit 506, and the second sub-pixel circuit 106 may further include a second reset circuit 606. The first reset circuit 506 is used to reset the control end of the first light-emitting driving circuit 501, and the second reset circuit 606 is used to reset the control end of the second light-emitting driving circuit 601.

For example, the touch display panel further includes a plurality of reset control lines. A plurality of sub-pixels in each sub-pixel group 10 may share a reset control line. The reset circuits of the plurality of sub-pixels sharing the reset control line are all connected to the shared reset control line, so that the control terminals of the light-emitting drive circuits of the plurality of sub-pixels sharing the reset control line can be controlled to be reset simultaneously.

For example, as shown in FIG6A and FIG6B , the first reset circuit 506 and the second reset circuit 606 are both connected to the common reset control line 25 and are controlled by the same reset control signal RST. However, the present invention is not limited thereto, and the first reset circuit 506 and the second reset circuit 606 may also be connected to different reset control lines 25, and the reset control signals RST applied to the different reset control lines 25 are synchronized.

For example, the first power supply terminal V1 is a high voltage terminal (e.g., power supply voltage Vdd), and the second power supply terminal V2 is a low voltage terminal (e.g., power supply voltage Vss); or, the first power supply terminal V1 is a low voltage terminal, and the second power supply terminal V2 is a high voltage terminal. For example, the high voltage terminal can be electrically connected to the positive electrode of the power supply to output a high level signal. The low voltage terminal can be electrically connected to the negative electrode of the power supply to output a low level signal. The low voltage terminal can also be electrically connected to the ground terminal (GND).

For example, in one example, as shown in FIGS. 5A and 5B , the first power supply terminal V1 is a high voltage terminal, the second power supply terminal V2 is a low voltage terminal, and the touch line 15 can be connected to the second power supply terminal V2, and the output terminal of the touch chip (not shown in the figure) in this example is connected to the second power supply terminal V2. In the display stage, the first power supply terminal V1 outputs a first electrode voltage signal, and the second power supply terminal V2 is configured to output a second electrode voltage signal, and the second electrode voltage signal can be transmitted to the cathode (i.e., touch electrode) of the first organic light emitting diode OLED1 and the second organic light emitting diode OLED2 through the touch line 15. In the touch stage, the first power supply terminal V1 does not output a signal, and the second power supply terminal V2 is configured to receive a touch drive signal output by the touch chip, and the touch drive signal can be transmitted to the touch electrode through the touch line 15.

For example, in another example, the touch line 15 can also be connected to the second power supply terminal and the third power supply terminal (not shown) at the same time, and the third power supply terminal is connected to the output terminal of the touch chip. In the display stage, the touch line 15 transmits the second electrode voltage signal output by the second power supply terminal V2 to the cathode (i.e., the touch electrode) of the first organic light emitting diode OLED1 and the second organic light emitting diode OLED2. In the touch stage, the touch line 15 transmits the touch drive signal output by the touch chip received by the third power supply terminal to the touch electrode.

For example, the touch driving signal may be a pulse voltage signal.

For example, the touch display panel further includes a control circuit (not shown). In the display stage, the control circuit is configured to control the touch line 15 to transmit the second electrode voltage signal to the touch electrode; and in the touch stage, the control circuit is configured to control the touch line 15 to transmit the touch drive signal to the touch electrode. The control circuit can drive the touch electrode in a time-sharing manner. For example, in the display stage, the touch electrode is used as the anode or cathode of the organic light-emitting element; in the touch stage, the touch electrode can be used to sense the touch signal, so that the touch display panel provided by the embodiment of the present disclosure can realize the integration of touch and display.

For example, the light-emitting control circuit is also configured to avoid mutual interference between the display function and the touch function of the touch display panel. As shown in FIG5A , the first sub-pixel 101 is used as an example for explanation. In the display stage, the light-emitting control line 19 can transmit the light-emitting control signal EM to the first light-emitting control circuit 504. Therefore, the first light-emitting control circuit 504 allows the driving current to flow through the first light-emitting driving circuit 501, so that the first organic light-emitting diode OLED1 can be driven to emit light, and the touch display panel realizes the display function. In the touch stage, the light-emitting control signal EM on the light-emitting control line 19 can be pulled up and modulated, and the first light-emitting control circuit 504 can float one side of the first light-emitting driving circuit 501 to disconnect the first light-emitting driving circuit 501 and the first organic light-emitting diode OLED1. At this time, the touch line 15 can transmit the touch driving signal to the touch electrode, and the touch display panel realizes the touch function.

It should be noted that, for the specific connection relationship between the components in the first sub-pixel circuit 105 and the second sub-pixel circuit 106 , reference may be made to the description in the following embodiment of the pixel circuit.

FIG. 7 is a schematic diagram of a pixel circuit provided in an embodiment of the present disclosure; FIG. 8 is a schematic diagram of another pixel circuit provided in an embodiment of the present disclosure.

An embodiment of the present disclosure further provides a pixel circuit, which can be applied to any of the above-mentioned touch display panels.

For example, the pixel circuit provided by the embodiment of the present disclosure includes a plurality of sub-pixel circuits configured to receive data signals from a shared data line to respectively drive the organic light emitting elements of a plurality of sub-pixels in the sub-pixel group located in the same row and connected to the shared data line to emit light.

For example, each sub-pixel circuit may include a light-emitting driving circuit, a light-emitting selection circuit, and a storage circuit. According to actual application requirements, the sub-pixel circuit of each sub-pixel may also include a light-emitting control circuit, a compensation circuit, a reset circuit, etc. It should be noted that in the following description of the pixel circuit, the description of the light-emitting driving circuit, the light-emitting selection circuit, the storage circuit, the light-emitting control circuit, the compensation circuit, the reset circuit, etc. can refer to the relevant description in the embodiment of the touch display panel, and the repeated parts will not be repeated.

The disclosed embodiment is described by taking the pixel circuit including two sub-pixel circuits as an example, and the two sub-pixel circuits may be the first sub-pixel circuit 105 and the second sub-pixel circuit 106 in the above-mentioned embodiment of the touch display panel. However, it is not limited thereto, and according to actual design, the pixel circuit may also include multiple (for example, three, four, etc.) sub-pixel circuits.

For example, as shown in Figure 7, in the pixel circuit provided in the embodiment of the present disclosure, the first sub-pixel circuit 105 may include a first driving transistor T1 (i.e., a first light-emitting driving circuit 501), a first selection transistor T7 (i.e., a first light-emitting selection circuit 502), a first control transistor T9 (i.e., a first light-emitting control circuit 504), a first storage capacitor C1 (i.e., a first storage circuit 503), a first node N51 and a third node N53.

For example, the second sub-pixel circuit 106 may include a second driving transistor T2 (i.e., a second light-emitting driving circuit 601), a second selection transistor T8 (i.e., a second light-emitting selection circuit 602), a third control transistor T10 (i.e., a second light-emitting control circuit 604), a second storage capacitor C2 (i.e., a second storage circuit 603), a fourth node N61 and a sixth node N63.

For example, as shown in FIG7 , in the first sub-pixel circuit 105, the gate of the first selection transistor T7 can be connected to the first gate line to receive the first scan signal S1, the first electrode of the first selection transistor T7 can be connected to the shared data line 16, and the second electrode of the first selection transistor T7 can be connected to the third node N53. The gate of the first driving transistor T1 can be connected to the third node N53, the first electrode of the first driving transistor T1 can be connected to the first node N51, and the second electrode of the first driving transistor T1 can be connected to the first power supply terminal V1. The first end of the first storage capacitor C1 is connected to the third node N53 (i.e., between the second electrode of the first selection transistor T7 and the gate of the first driving transistor T1), and the second end of the first storage capacitor C1 is connected to the first power supply terminal V1. The gate of the first control transistor T9 can be connected to the shared light emission control line 19 to receive the light emission control signal EM, the first electrode of the first control transistor T9 can be connected to the first end of the first organic light emitting diode OLED1 (e.g., the positive end of OLED1), and the second electrode of the first control transistor T9 can be connected to the first node N51. A second terminal of the first organic light emitting diode OLED1 (eg, a cathode terminal of OLED1 ) is connected to a second power terminal V2 .

It should be noted that, in the second sub-pixel circuit 106, the fourth node N61 corresponds to the first node N51 in the first sub-pixel circuit 105, and the sixth node N63 corresponds to the third node N53 in the first sub-pixel circuit 105. In the example shown in FIG7 , the connection mode of each transistor and the storage capacitor in the second sub-pixel circuit 106 is similar to that of the first sub-pixel circuit 105, except that the gate of the second selection transistor T8 is connected to the second gate line to receive the second scanning signal S2, and the first electrode of the third control transistor T10 is connected to the first end of the second organic light emitting diode OLED2 (for example, the positive end of OLED2).

For example, the first pole of the first driving transistor T1 is the first end a1 of the first light-emitting driving circuit 501, and the second pole of the first driving transistor T1 is the second end a2 of the first light-emitting driving circuit 501. The first pole of the second driving transistor T2 is the first end b1 of the second light-emitting driving circuit 601, and the second pole of the second driving transistor T2 is the second end b2 of the second light-emitting driving circuit 601.

For example, the light-emitting selection circuits of the plurality of sub-pixel circuits are all connected to a shared data line, and the shared data line is configured to provide different data signals to the light-emitting selection circuits of the plurality of sub-pixel circuits, respectively. As shown in FIG7 , the first light-emitting selection circuit 502 and the second light-emitting selection circuit 602 are both connected to the shared data line 16. That is, the first electrode of the first selection transistor T7 and the first electrode of the second selection transistor T8 are both connected to the shared data line 16. However, the first electrode of the first selection transistor T7 is used to receive the first data signal V _data1 , and the first electrode of the second selection transistor T8 is used to receive the second data signal V _data2 .

For example, the light emitting control circuits of the plurality of sub-pixel circuits are configured to be connected to the same light emitting control line and controlled by the same light emitting control signal. As shown in FIG7 , the first light emitting control circuit 504 and the second light emitting control circuit 604 are connected to the same light emitting control line 19. That is, the gate of the first control transistor T9 and the gate of the third control transistor T10 are connected to the same light emitting control line 19, and the light emitting control line 19 can simultaneously transmit the same light emitting control signal EM to the gate of the first control transistor T9 and the gate of the third control transistor T10.

For example, the driving mode of the 3T1C sub-pixel circuit is to control the brightness (grayscale) of the sub-pixel via three TFTs and one storage capacitor. For the pixel circuit provided in the embodiment of the present disclosure, the display stage may include a first charging stage, a second charging stage and a light-emitting stage. In the first charging stage, the shared data line 16 charges the first sub-pixel 101. In the second charging stage, the shared data line 16 charges the second sub-pixel 102. For example, in the first charging stage, the first scanning signal S1 is applied through the first gate line to turn on the first selection transistor T7, and the first data signal V _data1 charges the first storage capacitor C1 via the first selection transistor T7 through the shared data line 16, thereby storing the first data signal V _data1 in the first storage capacitor C1. In the second charging stage, the second scanning signal S2 is applied through the second gate line to turn on the second selection transistor T8, and the second data signal V _data2 charges the second storage capacitor C2 via the shared data line 16 via the second selection transistor T8, thereby storing the second data signal V _data2 in the second storage capacitor C2. The stored first data signal V _data1 can control the conduction degree of the first driving transistor T1, thereby controlling the magnitude of the current flowing through the first driving transistor T1. The stored second data signal V _data2 can control the conduction degree of the second driving transistor T2, thereby controlling the magnitude of the current flowing through the second driving transistor T2. In the light-emitting stage, the light-emitting control signal EM is simultaneously applied to the gates of the first control transistor T9 and the third control transistor T10, so that the first control transistor T9 and the third control transistor T10 are simultaneously turned on, so that the first control transistor T9 can receive the first light-emitting current signal flowing through the first driving transistor T1, and transmit the first light-emitting current signal to the first organic light-emitting diode OLED1 to drive it to emit light; the third control transistor T10 can receive the second light-emitting current signal flowing through the second driving transistor T2, and transmit the second light-emitting current signal to the second organic light-emitting diode OLED2 to drive it to emit light.

FIG. 8 is a schematic diagram of another pixel circuit provided according to an embodiment of the present disclosure.

For example, each sub-pixel circuit in the pixel circuit may also have an electrical compensation function. That is, each sub-pixel circuit has a compensation circuit. As shown in FIG8 , the compensation circuit may be an internal compensation circuit. The first sub-pixel circuit 105 may also include a first compensation transistor T3 (i.e., a first compensation circuit 505), and the second sub-pixel circuit 106 may also include a second compensation transistor T4 (i.e., a second compensation circuit 605). The first compensation transistor T3 may compensate for a threshold voltage drift of the first driving transistor T1. The second compensation transistor T4 may compensate for a threshold voltage drift of the second driving transistor T2.

For example, as shown in FIG8 , the first sub-pixel circuit 105 may further include a first reset transistor T5 (i.e., a first reset circuit 506), and the second sub-pixel circuit 106 may further include a second reset transistor T6 (i.e., a second reset circuit 606). The first reset transistor T5 may be used to write a first reset voltage V _RET1 into the gate of the first driving transistor T1 to reset the first driving transistor T1. The second reset transistor T6 may be used to write a second reset voltage V _RET2 into the gate of the second driving transistor T2 to reset the second driving transistor T2.

For example, in the embodiment of the present disclosure, the first driving transistor T1 and the second driving transistor T2 are P-type transistors, and the first reset voltage V _RET1 and the second reset voltage V _RET2 can be low voltages. When the first driving transistor T1 and the second driving transistor T2 are N-type transistors, the first reset voltage V _RET1 and the second reset voltage V _RET2 are high voltages.

For example, the first reset voltage V _RET1 and the second reset voltage V _RET2 may be the same or different, as long as the first reset voltage V _RET1 and the second reset voltage V _RET2 can reset the first driving transistor T1 and the second driving transistor T2 respectively. The present disclosure does not limit this.

For example, the reset circuits of the plurality of sub-pixel circuits are configured to be connected to the same reset control line. For example, as shown in FIG8 , the gate of the first reset transistor T5 and the gate of the second reset transistor T6 are connected to the same reset control line 25 and are controlled by the same reset control signal RST.

For example, as shown in FIG8 , in one example, the first light-emitting control circuit 504 may include a first control transistor T9 (i.e., a first light-emitting control subcircuit 5041) and a second control transistor T11 (i.e., a second light-emitting control subcircuit 5042), and the second light-emitting control circuit 604 may include a third control transistor T10 (i.e., a third light-emitting control subcircuit 6041) and a fourth control transistor T11 (i.e., a fourth light-emitting control subcircuit 6042). The gate of the first control transistor T9, the gate of the second control transistor T11, the gate of the third control transistor T10, and the gate of the fourth control transistor T11 may all be connected to the same light-emitting control line 19 and controlled by the same light-emitting control signal EM.

The following describes in detail the connection between each transistor and the storage circuit by taking the first sub-pixel circuit 105 as an example.

For example, as shown in FIG8 , the first sub-pixel circuit 105 further includes a second node N52. In the first sub-pixel circuit 105, a first electrode of the first driving transistor T1 is connected to the first node N51, a second electrode of the first driving transistor T1 is connected to the second node N52, and a gate of the first driving transistor T1 is connected to a third node N53. A first electrode of the first selection transistor T7 is connected to the common data line 16 to receive a first data signal V _data1 , a second electrode of the first selection transistor T7 is connected to the first node N51, and a gate of the first selection transistor T7 is configured to receive a first scan signal S1. A first end of the first storage capacitor C1 is connected to the third node N53, and a second end of the first storage capacitor C1 is connected to the first power supply terminal V1. A first electrode of the first compensation transistor T3 is connected to the second node N52, a second electrode of the first compensation transistor T3 is connected to the third node N53, and a gate of the first compensation transistor T3 is configured to receive a first scan signal S1. A first electrode of the first control transistor T9 is connected to a first terminal of the first organic light emitting diode OLED1 (e.g., a positive terminal of OLED1), a second electrode of the first control transistor T9 is connected to a first node N51, and a gate of the first control transistor T9 is connected to a common light emission control line 19 to receive a light emission control signal EM. A first electrode of the second control transistor T11 is connected to a second node N52, a second electrode of the second control transistor T11 is connected to a first power supply terminal V1, and a gate of the second control transistor T11 is connected to a common light emission control line 19 to receive a light emission control signal EM. A first electrode of the first reset transistor T5 is configured to receive a first reset voltage V _RET1 , a second electrode of the first reset transistor T5 is connected to a third node N53, and a gate of the first reset transistor T5 is connected to a common reset control line 25 to receive a reset control signal RST.

For example, the second sub-pixel circuit 106 further includes a fifth node N62, and the fifth node N62 corresponds to the second node N52 in the first sub-pixel circuit 105. In the example shown in FIG8 , the connection mode of each transistor and the storage circuit in the second sub-pixel circuit 106 is also similar to that of the first sub-pixel circuit 105, except that the gate of the second selection transistor T8 is connected to the second gate line to receive the second scanning signal S2, the gate of the second compensation transistor T4 is configured to receive the second scanning signal S2, and the first electrode of the third control transistor T10 is connected to the first end of the second organic light emitting diode OLED2 (for example, the positive end of OLED2).

It should be noted that the transistor in the embodiment of the present disclosure may adopt a top-gate structure or a bottom-gate structure, and the embodiment of the present disclosure does not limit this.

Fig. 9 is a schematic block diagram of an electronic device provided by an embodiment of the present disclosure. For example, as shown in Fig. 9, the electronic device 70 provided by the embodiment of the present disclosure includes any of the above-mentioned touch display panels 705.

For example, the touch display panel 705 can be a rectangular touch panel, a circular touch panel, an elliptical touch panel, or a polygonal touch panel, etc. In addition, the touch display panel 705 can be not only a flat touch panel, but also a curved touch panel, or even a spherical touch panel. When the touch display panel 705 is a curved display panel, the touch electrode for realizing the touch function is integrated with the anode or cathode of the organic light emitting element, so that the touch display panel 705 can improve the stability of the flexible display.

For example, as shown in Fig. 9, the electronic device 70 further includes a data driver 710. The data driver 710 is configured to provide data signals to a plurality of data lines of the touch display panel 705, and is further configured to provide a plurality of data signals to the shared data lines in a time-sharing manner.

For example, the electronic device 70 provided in the embodiment of the present disclosure may be any product or component with a touch display function, such as a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, or the like.

It should be noted that other components of the electronic device 70 (such as a control device, an image data encoding/decoding device, a row scan driver, a column scan driver, a clock circuit, etc.) should be understood by ordinary technicians in the field and will not be elaborated here, nor should they be regarded as limitations on the present disclosure.

The embodiment of the present disclosure also provides a driving method for the touch display panel provided in any embodiment of the present disclosure. FIG10 is a flow chart of a driving method provided in an embodiment of the present disclosure.

For example, as shown in FIG10 , an example of the driving method may include the following operations:

Operation S10: display stage, providing data signals to the multiple sub-pixels in the sub-pixel group through the shared data line to drive the multiple sub-pixels in the sub-pixel group to emit light;

Operation S20: in a touch control stage, a touch control driving signal is applied to the touch control electrode via the touch control line, and a touch control sensing signal of the touch control electrode is read via the touch control line.

There is no sequential order for the above operations, nor is it required that each display stage be accompanied by a touch stage. Under the condition that the touch time accuracy is met, a touch stage can be set for every two or more display stages, thereby reducing power consumption.

For example, each sub-pixel may include an organic light-emitting element and a sub-pixel circuit. The organic light-emitting element may be an organic light-emitting diode. The sub-pixel circuit of each sub-pixel includes a light-emitting driving circuit, a light-emitting selection circuit, a storage circuit, a compensation circuit, a light-emitting control circuit, and a reset circuit. It should be noted that the specific description of the sub-pixel circuit can refer to the relevant description in the embodiment of the touch display panel and the embodiment of the pixel circuit, which will not be repeated here.

For example, the timing diagram for driving the plurality of sub-pixel circuits may be set according to actual requirements, and the embodiments of the present disclosure do not specifically limit this.

For example, the pixel circuit shown in FIG8 is used as an example for explanation. FIG11A to FIG15B are operation flows of the driving method of the pixel circuit shown in FIG8. For example, as shown in FIG11B, the time length of the touch stage is shorter than the time length of the display stage, but the embodiments of the present disclosure are not limited thereto. For example, according to actual application requirements, the time length of the touch stage can be equal to the time length of the display stage; the time length of the touch stage can also be equal to one-half or one-tenth of the time length of the display stage.

It should be noted that in Figures 11A, 12A, 13A, 14A and 15A, a square (□) at the position of a transistor indicates that the transistor is in an on state, and a circle (○) at the position of a transistor indicates that the transistor is in an off state. The dotted line with an arrow indicates the signal flow direction.

For example, in one example, the display phase may further include a reset phase, a compensation phase, and a light-emitting phase. For example, in the reset phase, a reset control signal is provided to the reset circuits of the multiple sub-pixels to reset the light-emitting drive circuits of the multiple sub-pixels; in the compensation phase, a scanning signal is provided to the compensation circuits of the multiple sub-pixels in a time-sharing manner to compensate the light-emitting drive circuits of the multiple sub-pixels respectively; in the light-emitting phase, a light-emitting control signal is provided to the light-emitting control circuits of the multiple sub-pixels to drive the multiple sub-pixels to emit light.

For example, as shown in FIG. 11A and FIG. 11B , in the reset stage RT, the reset control signal RST is at a low level, while the light emitting control signal EM, the first scanning signal S1, and the second scanning signal S2 are all at a high level, so that the first reset transistor T5 and the second reset transistor T6 are turned on, and the remaining transistors are all in a cut-off state. At this time, the first reset transistor T5 resets the voltage of the third node N53 to the first reset voltage V _RET1 ; the second reset transistor T6 resets the voltage of the sixth node N63 to the second reset voltage V _RET2 . The first reset voltage V _RET1 and the second reset voltage V _RET2 are, for example, both low voltages, for example, the low voltage may be 0V.

For example, as shown in FIG. 12A to FIG. 13B , the compensation stage includes a first stage CT1 and a second stage CT2. In the first stage CT1, a first scanning signal S1 is provided to a first compensation circuit 505 of a first sub-pixel 101 to compensate the first light-emitting driving circuit 501; and in the second stage CT2, a second scanning signal S2 is provided to a second compensation circuit 605 of a second sub-pixel 102 to compensate the second light-emitting driving circuit 601.

For example, as shown in FIG. 12A and FIG. 12B, in the first stage CT1, the reset control signal RST becomes a high level, the first scan signal S1 becomes a low level, and the light emitting control signal EM and the second scan signal S2 both maintain a high level. At this time, the first driving transistor T1, the first selection transistor T7 and the first compensation transistor T3 are turned on, and the remaining transistors are in a cut-off state. Thus, the first data signal V _data1 charges the third node N53 via the first driving transistor T1, the first selection transistor T7 and the first compensation transistor T3 until the voltage of the third node N53 is V _data1 -V _th1 , V _th1 is the threshold voltage of the first driving transistor T1, and the voltage (i.e., V _data1 -V _th1 ) can be stored in the first storage capacitor C1. At this time, the voltage of the gate of the first driving transistor T1 is V _data1 -V _th .

For example, as shown in FIG. 13A and FIG. 13B, in the second stage CT2, the reset control signal RST and the light emitting control signal EM are both kept at a high level, the first scanning signal S1 becomes a high level, and the second scanning signal S2 becomes a low level. At this time, the second driving transistor T2, the second selection transistor T8 and the second compensation transistor T4 are turned on, and the remaining transistors are in a cut-off state. Thus, the second data signal V _data2 charges the sixth node N63 via the second driving transistor T2, the second selection transistor T8 and the second compensation transistor T4, and is charged until the voltage of the sixth node N63 is V _data2 -V _th2 , V _th2 is the threshold voltage of the second driving transistor T2, and the voltage (i.e., V _data2 -V _th2 ) can be stored in the second storage capacitor C2. At this time, the voltage of the gate of the second driving transistor T2 is V _data2 -V _th2 .

It should be noted that there is no order between the first stage CT1 and the second stage CT2. The first stage can be performed before the second stage CT2 or after the second stage CT2.

For example, as shown in FIG. 14A and FIG. 14B , in the light emitting stage LT, the light emitting control signal EM becomes a low level, the first scanning signal S1 and the reset control signal RST both maintain a high level, and the second scanning signal S2 becomes a high level. At this time, the first driving transistor T1, the second driving transistor T2, the first control transistor T9, the second control transistor T11, the third control transistor T10 and the fourth control transistor T12 are in the on state, and the remaining transistors are in the off state. Based on the saturation current formula of the first driving transistor T1, it can be obtained that the first light emitting current signal I _OLED1 flowing through the first driving transistor T1 can be expressed as:

I _OLED1 = K(V _GS1 –V _th1 ) ²

=K[V _dd –(V _data1 –V _th1 )–V _th1 ] ²

=K( _{Vdd –Vdata1} ) ²

In the above formula, V _GS1 is the voltage difference between the gate and the source of the first driving transistor T1, V _dd is the first electrode voltage signal output by the first power supply terminal V1, and V _th1 is the threshold voltage of the first driving transistor T1. It can be seen from the above formula that the first light-emitting current signal I _OLED1 is no longer affected by the threshold voltage V _th1 of the first driving transistor T1, but is only related to the first electrode voltage signal V _dd output by the first power supply terminal V1 and the first data signal V _data1 . The first data signal V _data1 is directly transmitted by the data signal terminal Vd, and has nothing to do with the threshold voltage V _th1 of the first driving transistor T1. In this way, the problem of threshold voltage drift of the first driving transistor T1 due to the process and long-term operation can be solved, the accuracy of the first light-emitting current signal I _OLED1 can be guaranteed, the influence of the threshold voltage of the first driving transistor T1 on I _OLED1 can be eliminated, and the normal operation of the first organic light-emitting diode OLED1 can be guaranteed.

For example, the first electrode voltage signal V _dd may be a high level signal.

Similarly, the second light emitting current signal I _OLED2 flowing through the second driving transistor T2 can be expressed as:

I _OLED2 = K(V _GS2 –V _th2 ) ²

=K[V _dd –(V _data2 –V _th2 )–V _th2 ] ²

=K( _{Vdd –Vdata2} ) ²

In the above formula, V _GS2 is the voltage difference between the gate and the source of the second driving transistor T2, and V _th2 is the threshold voltage of the second driving transistor T2. The second light-emitting current signal I _OLED2 is not affected by the threshold voltage V _th2 of the second driving transistor T2, but is only related to the first electrode voltage signal V _dd outputted from the first power supply terminal V1 and the second data signal V _data2 .

For example, the touch electrode is reused as the cathode or anode of the organic light-emitting element of at least one sub-pixel. The driving method may also include the following operations: in the display stage, applying an electrode voltage signal to the touch electrode via the touch line; in the touch stage, applying a touch drive signal to the touch electrode via the touch line, and reading a touch sensing signal on the touch electrode via the touch line, thereby realizing a touch operation. Thus, the embodiment of the present disclosure can realize the integration of touch and display through time-division multiplexing, thereby reducing the volume and weight of the display panel.

For example, as shown in FIG15A , in one example, the touch electrode is reused as the cathode of the organic light emitting element. Thus, in the display stage, the touch line can transmit a second electrode voltage signal to the touch electrode. The second electrode voltage signal is, for example, a low level signal.

For example, as shown in FIG. 15A and FIG. 15B , in the touch control stage, the light emitting control signal EM is applied to disconnect the electrical connection between the sub-pixel circuit and the organic light emitting element, that is, the light emitting control signal EM is pulled high, so that the first control transistor T9, the second control transistor T11, the third control transistor T10 and the fourth control transistor T12 are in the cut-off state, so that the electrical connection between the sub-pixel circuit and the organic light emitting element of each sub-pixel can be disconnected. Then, the light emitting control signal EM after being pulled high is modulated, and at the same time, the reset control signal RST, the first scanning signal S1 and the second scanning signal S2 are modulated on the basis of the original signal, so that the touch display panel realizes the touch function.

For example, in the touch control stage, the light control signal EM, the reset control signal RST, the first scan signal S1 and the second scan signal S2 may be frequency modulated. The modulated light control signal EM, the reset control signal RST, the first scan signal S1 and the second scan signal S2 may be pulse signals.

For example, as shown in FIG. 15B , in the touch control stage, the signal output by the data signal terminal Vd may also be modulated, so that the signal output by the data signal terminal Vd also becomes a pulse signal.

There are a few points to note about this disclosure:

(1) The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure, and other structures may refer to the general design.

(2) In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

The above description is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto. The protection scope of the present disclosure shall be based on the protection scope of the claims.

Claims (16)

1. A touch display panel, comprising: A plurality of sub-pixel groups and a plurality of data lines, wherein each of the sub-pixel groups includes a plurality of sub-pixels located in the same row and sharing a data line, and the data line is configured to provide a data signal to the sub-pixel group; A plurality of touch electrodes and a plurality of touch lines, wherein each of the touch electrodes is electrically connected to a touch line, the data line and the touch line are arranged in the same layer, and the plurality of touch electrodes constitute a self-capacitive electrode array, Each sub-pixel includes a driving transistor and an organic light-emitting element, the driving transistor is used to drive the organic light-emitting element to emit light, the multiple data lines and the multiple touch lines are located in the same layer as the gate or source/drain of the driving transistor and are formed using the same patterning process, and at least one of the multiple touch electrodes can be reused as a cathode or anode of the organic light-emitting element of at least one sub-pixel, The first electrode of the driving transistor is connected to the first node, the second electrode of the driving transistor is connected to the second node, and the gate of the driving transistor is connected to the third node. The touch display panel further includes a plurality of light-emitting control lines, wherein the plurality of sub-pixels in each of the sub-pixel groups share one light-emitting control line, and the light-emitting control line is configured to provide the sub-pixel group with a light-emitting control signal for controlling the plurality of sub-pixels in the sub-pixel group to emit light. The light emitting control circuits of the plurality of sub-pixels sharing the light emitting control line are all connected to the shared light emitting control line. The sub-pixel further comprises a sub-pixel circuit, and the sub-pixel circuit is configured to receive a scan signal and the data signal from a gate line and a data line connected to the sub-pixel to drive the organic light-emitting element to emit light. The sub-pixel circuit includes a light emitting selection circuit configured to write the data signal into a control terminal of a light emitting driving circuit according to the scanning signal; The light emitting selection circuits of the plurality of sub-pixels of each sub-pixel group are connected to the data signal terminal, The touch display panel is configured to provide the data signal to the multiple sub-pixels in the sub-pixel group through the shared data line in the display stage to drive the multiple sub-pixels in the sub-pixel group to emit light, The touch display panel is configured to apply a touch driving signal to the touch electrode via the touch line during a touch stage, and read a touch sensing signal of the touch electrode via the touch line. The display stage includes a compensation stage, the compensation stage includes a first stage and a second stage, the plurality of sub-pixels include a first sub-pixel and a second sub-pixel, In the first stage, the data signal terminal provides a first data signal to charge the third node connected to the driving transistor of the first sub-pixel, and in the second stage, the data signal terminal provides a second data signal to charge the sixth node connected to the driving transistor of the second sub-pixel, wherein the voltage of the second data signal is higher than the voltage of the first data signal. In the touch control stage, applying the light emitting control signal to disconnect the electrical connection between the sub-pixel circuit and the organic light emitting element; The scanning signal and the light emitting control signal are modulated into pulse signals. 2 . The touch display panel according to claim 1 , wherein there is at least one data line between two adjacent touch lines. The touch display panel according to claim 1 , wherein the data line and the touch line are made of the same material. 4 . The touch display panel according to claim 1 , further comprising a plurality of gate lines, wherein the plurality of sub-pixels in each of the sub-pixel groups are respectively connected to the plurality of gate lines, and the plurality of gate lines are configured to provide scanning signals to the plurality of sub-pixels respectively. 5. The touch display panel according to claim 1, wherein the sub-pixel circuit further comprises: A light-emitting driving circuit, configured to drive the organic light-emitting element to emit light; a storage circuit configured to store the data signal and hold it at a control terminal of the light-emitting driving circuit; A compensation circuit configured to compensate the light-emitting driving circuit; The light emitting control circuit is configured to control a driving current to flow through the light emitting driving circuit. 6 . The touch display panel according to claim 5 , wherein, in each of the sub-pixel groups, the light emitting selection circuits of the plurality of sub-pixels sharing the data line are all connected to the shared data line. 7. A pixel circuit comprising a plurality of sub-pixel circuits, The plurality of sub-pixel circuits are configured to receive data signals from a common data line to respectively drive the organic light-emitting elements of a plurality of sub-pixels in the sub-pixel group located in the same row and connected to the common data line to emit light. Each sub-pixel includes a driving transistor and an organic light-emitting element, the driving transistor is used to drive the organic light-emitting element to emit light, the data line and the plurality of touch lines are located in the same layer as the gate or source/drain of the driving transistor and are formed using the same patterning process, the plurality of touch lines constitute a self-capacitive electrode array, and at least one of the plurality of touch electrodes can be reused as a cathode or anode of the organic light-emitting element of at least one sub-pixel, The first electrode of the driving transistor is connected to the first node, the second electrode of the driving transistor is connected to the second node, and the gate of the driving transistor is connected to the third node. The plurality of sub-pixels in each of the sub-pixel groups share a light-emitting control line, and the light-emitting control line is configured to provide the sub-pixel group with a light-emitting control signal for controlling the plurality of sub-pixels in the sub-pixel group to emit light. The light emitting control circuits of the plurality of sub-pixels sharing the light emitting control line are all connected to the shared light emitting control line. The sub-pixel circuit is configured to receive a scan signal and the data signal from a gate line and a data line connected to the sub-pixel to drive the organic light-emitting element to emit light. The sub-pixel circuit includes a light emitting selection circuit configured to write the data signal into a control terminal of a light emitting driving circuit according to the scanning signal; The light emitting selection circuits of the plurality of sub-pixels of each sub-pixel group are connected to the data signal terminal, In the display stage, the data signal is provided to the plurality of sub-pixels in the sub-pixel group through the shared data line to drive the plurality of sub-pixels in the sub-pixel group to emit light. In the touch control stage, a touch driving signal is applied to the touch control electrode via the touch control line, and a touch sensing signal of the touch control electrode is read via the touch control line. The display stage includes a compensation stage, the compensation stage includes a first stage and a second stage, the plurality of sub-pixels include a first sub-pixel and a second sub-pixel, In the first stage, the data signal terminal provides a first data signal to charge the third node connected to the driving transistor of the first sub-pixel, and in the second stage, the data signal terminal provides a second data signal to charge the sixth node connected to the driving transistor of the second sub-pixel, wherein the voltage of the second data signal is higher than the voltage of the first data signal. In the touch control stage, applying the light emitting control signal to disconnect the electrical connection between the sub-pixel circuit and the organic light emitting element; The scanning signal and the light emitting control signal are modulated into pulse signals. 8. The pixel circuit according to claim 7, wherein each of the sub-pixel circuits comprises: A light-emitting driving circuit, configured to drive the organic light-emitting elements of the corresponding sub-pixels in the sub-pixel group to emit light; a storage circuit configured to store the data signal and hold it at a control terminal of the light-emitting driving circuit; A compensation circuit configured to compensate the light-emitting driving circuit; a light emitting control circuit configured to control a driving current to flow through the light emitting drive circuit; Wherein, the light-emitting selection circuits of the plurality of sub-pixel circuits are all connected to the shared data line. 9. The pixel circuit according to claim 8, wherein: The light emitting control circuit includes two light emitting control sub-circuits, which are respectively arranged to be electrically connected to the first end and the second end of the light emitting driving circuit. The two light emitting control sub-circuits are configured to be controlled by the same light emitting control signal. 10. The pixel circuit according to claim 8, wherein each of the sub-pixel circuits further comprises a reset circuit. The reset circuit is configured to reset the light emitting drive circuit. The reset circuits of the plurality of sub-pixel circuits are configured to be connected to the same reset control line. 11. The pixel circuit according to claim 10, wherein the light emitting driving circuit comprises a driving transistor, the light emitting selecting circuit comprises a selecting transistor, the storage circuit comprises a storage capacitor, the compensation circuit comprises a compensation transistor, the light emitting control circuit comprises a first control transistor and a second control transistor, the reset circuit comprises a reset transistor, The first electrode of the selection transistor is connected to the common data line to receive the data signal, the second electrode of the selection transistor is connected to the first node, and the gate of the selection transistor is configured to receive a scan signal. The first end of the storage capacitor is connected to the third node, and the second end of the storage capacitor is connected to the power supply terminal. A first electrode of the compensation transistor is connected to the second node, a second electrode of the compensation transistor is connected to the third node, and a gate of the compensation transistor is configured to receive the scan signal. The first electrode of the first control transistor is connected to the organic light emitting element of the corresponding sub-pixel, the second electrode of the first control transistor is connected to the first node, and the gate of the first control transistor is configured to receive a light emitting control signal. A first electrode of the second control transistor is connected to the second node, a second electrode of the second control transistor is connected to the power supply terminal, and a gate of the second control transistor is configured to receive the light emitting control signal. A first electrode of the reset transistor is configured to receive a reset voltage, a second electrode of the reset transistor is connected to the third node, and a gate of the reset transistor is connected to the reset control line. 12. An electronic device, comprising: the touch display panel according to any one of claims 1 to 6. 13. A method for driving a touch display panel according to any one of claims 1 to 4, comprising: In a display stage, the data signal is provided to the plurality of sub-pixels in the sub-pixel group through the shared data line to drive the plurality of sub-pixels in the sub-pixel group to emit light; In the touch control stage, a touch control driving signal is applied to the touch control electrode via the touch control line, and a touch control sensing signal of the touch control electrode is read via the touch control line. 14. The driving method according to claim 13, wherein, in the display stage, an electrode voltage signal is applied to the touch electrode via the touch line; In the touch control stage, the touch control driving signal is applied to the touch control electrode via the touch control line. 15. The driving method according to claim 14, wherein each of the sub-pixels further comprises a sub-pixel circuit, the sub-pixel circuit comprises a light-emitting driving circuit, a compensation circuit, a light-emitting control circuit and a reset circuit, and the display stage comprises: In a reset stage, a reset control signal is provided to the reset circuits of the plurality of sub-pixels to reset the light-emitting drive circuits of the plurality of sub-pixels; In the compensation stage, scanning signals are provided to the compensation circuits of the plurality of sub-pixels in a time-sharing manner to compensate the light-emitting driving circuits of the plurality of sub-pixels respectively; In the light emitting stage, a light emitting control signal is provided to the light emitting control circuits of the plurality of sub-pixels to drive the plurality of sub-pixels to emit light. 16. The driving method according to claim 15, wherein: In the touch control stage, applying the light emitting control signal to disconnect the electrical connection between the sub-pixel circuit and the organic light emitting element; The reset control signal, the scan signal, and the light emitting control signal are modulated.