CN104049801B - A kind of touch-control display panel and its driving method, touch control display apparatus - Google Patents

Abstract

The present invention provides a touch display panel, a driving method thereof, and a display device. The touch display panel includes a first substrate provided with a black matrix, a second substrate provided with sub-pixel units, and a data drive unit, further comprising At least one transparent conductive layer is used to form a touch layer, and the transparent conductive layer includes a plurality of slits in the first direction and slits in the second direction; in the direction of light transmission, the first direction slits of the transparent conductive layer The slit overlaps with one or more columns of sub-pixel units; in the case of a solid-color screen, the driving voltage of the sub-pixel unit overlapping with the slit in the first direction is different from the driving voltage of the sub-pixel unit in other columns, and the sub-pixel overlapping with the slit in the first direction The brightness of the unit is the same as that of other sub-pixel units in the column, which is not easy to be detected. The touch display panel and the display device provided by the present invention improve the consistency of the penetration rate through physical and electrical means, realize the hiding of slits, avoid the display of slit images, and improve the display effect.

Description

A touch display panel, its driving method, and a touch display device

technical field

The present invention relates to the technical field of touch display, in particular to a touch display panel, a driving method of the touch display panel, and a touch display device including the touch display panel.

Background technique

Touch technology is a major scientific and technological innovation in the history of human-computer interaction. Commonly used touch technologies are divided into capacitive, electromagnetic, and resistive according to technical principles, and are divided into plug-in and built-in from the structure. The touch screen embedded in the liquid crystal display (LCD) is very popular among manufacturers because it can be integrated with the color filter (CF) substrate, which effectively reduces the thickness of the entire display device and simplifies the process. As shown in Figures 1 and 2, the in-cell touch screen includes a CF substrate 10, a black matrix 11, a touch layer (including a metal grid 121, a transparent conductive layer 122, a first insulating layer 123 and a metal bridge 124), a color resist (R, G, B) 13 , a second insulating layer 14 , a thin film transistor substrate (TFT substrate) 20 , and a plurality of sub-pixel units and circuit electrodes 21 , and a liquid crystal layer 30 are disposed on the TFT substrate 20 . The black matrix 11 is located on the CF substrate 10 , and the black matrix (BM) 11 is provided with a plurality of light-transmittable regions corresponding to the sub-pixel units on the TFT substrate 20 one by one. The color resist 13 is located on the touch layer 12 and covers the light-permeable area of the black matrix 11 , and the second insulating layer 14 is located on the color resist 13 . The touch layer 12 is provided with driving electrodes and sensing electrodes, and the driving electrodes and sensing electrodes are arranged in a criss-cross pattern. When a finger touches the touch screen, the driving electrodes and sensing electrodes at the contact point will generate a touch signal, and the coordinate position of the touch is located according to the touch signal. .

As shown in Figure 2, the driving electrode wiring and touch electrode wiring of the in-cell touch screen with the above structure are composed of a metal grid 121 and a transparent conductive layer 122, wherein the metal grid 121 can be blocked by the BM to be invisible by design , and the slits of the pattern of the transparent conductive layer 122 may be observed by human eyes, because the slits of the pattern of the transparent conductive layer 122 are opened in the region where the pixel is located (ie, the light-transmitting region). Since the light transmittance is different between the place with the transparent conductive layer 122 and the place without the transparent conductive layer 122 , human eyes can perceive it. Moreover, for different wavelengths, the transmittances are different ( FIG. 3 ), so the slits of the transparent conductive layer 122 are not obvious to the same degree in the R, G, and B three-color screens.

Contents of the invention

One of the objectives of the present invention is to provide a touch display panel, its driving method, and a display device, which can achieve uniform transmittance of the panel and improve the display effect through physical and electrical means.

In order to solve the above problems, an embodiment of the present invention provides a touch display panel, including:

first substrate;

a second substrate opposite to the first substrate;

A black matrix formed inside the first substrate, the black matrix is provided with a plurality of light-transmitting regions;

a plurality of sub-pixel units formed on the second substrate and arranged in an array;

a data driving unit, configured to output a driving voltage to the sub-pixel unit;

The sub-pixel units are in one-to-one correspondence with the light-transmitting regions of the first substrate;

The touch layer includes at least one transparent conductive layer, and the transparent conductive layer includes a slit; the slit includes a slit in a first direction and a slit in a second direction; the slit in the first direction and the slit parallel to it One or more columns of sub-pixel units overlap;

In the case of a solid color screen, the driving voltage of the sub-pixel unit overlapping with the slit in the first direction is different from the driving voltage of other sub-pixel units, and the brightness of the sub-pixel unit overlapping with the slit in the first direction is the same as that of other sub-pixel units. Specifically, when the touch display panel is in the normally black mode and in a solid color screen, the driving voltage of the sub-pixel unit overlapping with the slit in the first direction is lower than the driving voltage of the sub-pixel units in other columns, or the driving voltage of the sub-pixel units in other columns The voltage is higher than the driving voltage of the sub-pixel unit overlapping with the slit in the first direction; when the touch display panel is in normal white mode, and in a solid color screen, the driving voltage of the sub-pixel unit overlapping with the slit in the first direction is higher than that of other columns The driving voltage of the pixel unit is high, or the driving voltage of sub-pixel units in other columns is lower than that of the sub-pixel units overlapping with the slits in the first direction.

An embodiment of the present invention also provides a touch display device using the above touch display panel.

The present invention also provides a method for driving a touch panel, the touch display panel comprising:

first substrate;

a second substrate opposite to the first substrate;

A black matrix formed inside the first substrate, the black matrix is provided with a plurality of light-transmitting regions;

a plurality of sub-pixel units formed on the second substrate and arranged in an array;

a data driving unit, configured to output a driving voltage to the sub-pixel unit;

The sub-pixel units are in one-to-one correspondence with the light-transmitting regions of the first substrate;

The touch layer includes at least one transparent conductive layer, and the transparent conductive layer includes a slit; the slit includes a slit in a first direction and a slit in a second direction; the slit in the first direction and the slit parallel to it One or more columns of sub-pixel units overlap;

Adjust the output driving voltage of the data driving unit so that in the pure screen, the driving voltage of the sub-pixel unit overlapping with the slit in the first direction is different from the driving voltage of the sub-pixel unit in other columns, and the sub-pixel unit overlapping with the slit in the first direction The luminance of is the same as the luminance of other column sub-pixel units.

The touch display panel, its driving method, and the touch display device provided by the present invention improve the consistency of the penetration rate by reasonably setting the position of the slit, and then through electrical adjustment, realize the hiding of the slit, avoid the display of the slit image, and improve display effect.

Description of drawings

Fig. 1 is a schematic cross-sectional structure diagram of an in-cell touch display in the prior art;

Fig. 2 is a schematic diagram of an embedded touch panel when ITO is used as a transparent conductive layer in the prior art;

Fig. 3 is the transmittance to the light of each wavelength when ITO is made transparent conductive layer in the prior art;

4 is a schematic cross-sectional view of a single-layer touch display device provided by Embodiment 1 of the present invention;

Fig. 5 is a schematic structural view of the transparent conductive layer in Fig. 4;

FIG. 6 is an enlarged schematic diagram of part of the drive electrode in FIG. 5;

FIG. 7 is an enlarged schematic diagram of the routing area in FIG. 5;

Figure 8 is a schematic diagram of another embodiment of the first embodiment;

Fig. 9 is a partially enlarged schematic diagram of Fig. 8;

FIG. 10 is a schematic cross-sectional view of a touch display device provided in Embodiment 2;

FIG. 11 is a schematic diagram of the touch structure provided by Embodiment 2;

Fig. 12 is an enlarged schematic diagram of part of the structure in Fig. 11;

Fig. 13 is a schematic diagram of another embodiment of the second embodiment;

FIG. 14 is a schematic cross-sectional view of a touch display device provided in Embodiment 3;

FIG. 15 is a top view of the touch structure of the third embodiment.

detailed description

In order to make the purpose and features of the present invention more obvious and easy to understand, the following will further describe the specific embodiments of the present invention in conjunction with the accompanying drawings. However, the present invention can be realized in different forms, and should not be considered as being limited to the described embodiments .

Embodiment one

FIG. 4 is a schematic cross-sectional view of a touch display device provided by Embodiment 1 of the present invention. As shown in the figure, the touch display device includes a touch structure 10 , an array substrate 11 and a display layer 13 disposed between the touch structure 10 and the array substrate 11 . Wherein, the display layer may be a liquid crystal layer, an organic light emitting layer or other materials. In the first embodiment, the display layer 13 is illustrated by taking a liquid crystal layer as an example. The array substrate 11 is provided with a sub-pixel unit array (not shown) and a data driving unit (not shown) towards the inside of the touch control structure 10 .

The touch control structure 10 sequentially includes an upper polarizer 108 , a transparent conductive layer 103 , a color filter substrate 101 , a black matrix 102 disposed inside the color filter substrate 101 , and a color unit layer 104 . Wherein, the black matrix 102 is provided with a plurality of light-transmitting regions 1021, and the color unit layer 104 includes various color color resistances, specifically R color resistance, G color resistance, B color resistance, W color resistance, and color resistance The color resistance corresponds to the sub-pixel units on the array substrate 11 one by one. In the first embodiment, R color resistance, G color resistance, and B color resistance are used as examples, and the various color resistances are covered according to a certain arrangement rule. in the light-transmitting region 1021 of the black matrix 102 . Specifically, in Embodiment 1, the R color resistance, G color resistance, and B color resistance are arranged in multiple columns in the column direction, and in the row direction, the R color resistance, G color resistance, and B color resistance alternately arrangement.

The transparent conductive layer 103 is used to form a touch layer, which can be capacitive touch or electromagnetic touch. In the first embodiment, the touch structure is a single-layer oncell mutual capacitance touch structure. For details, please refer to FIG. 5. FIG. 5 is a schematic structural diagram of a transparent conductive layer. The touch layer includes a plurality of driving electrodes 103a and a plurality of sensing electrodes 103b. The mutual capacitance formed between the electrode 103a and the sensing electrode 103b is used to detect the touch action. The driving electrode 103a and the sensing electrode 103b are respectively connected to the driving signal by the driving electrode wiring 103f and the sensing electrode wiring 103d, and also includes the dummy wiring ( That is, the dummy wiring) 103h, the dummy wiring 103h in this embodiment is used for grounding and plays the role of electrostatic protection. Its working principle is as follows: each driving electrode 103a, sensing electrode 103b and the intermediate insulating medium form a mutual capacitance, and a touch signal is input into the driving electrode 103a and sensing electrode 103b, when a touch action occurs, the driving electrode 103a and sensing electrode 103b are located When the area is touched, the mutual capacitance value at the touch point will change, and the sensing signal will also change. By testing the sensing signal, the touch position can be located.

The transparent conductive layer 103 also includes a plurality of slits, specifically, the longitudinal direction includes longitudinal slits between the driving electrodes 103a and the sensing electrodes 103b or between the touch electrodes and the touch electrode traces or dummy traces 103c, and the longitudinal slit 103e between the touch electrode traces and the touch electrode traces or dummy traces. Horizontal slots 103g between wires or dummy traces. Since the driving electrodes 103 a and the sensing electrodes 103 b are formed by etching the same transparent conductive layer 103 , it is necessary to provide slits 103 c between adjacent electrodes to insulate them from each other. At the same time, the driving electrodes 103a and the sensing electrodes 103b are connected to external driving signals through wires, for example, the sensing electrode wires 103d connect the sensing electrodes 103b to the sensing signals, and the sensing electrode wires 103d are also etched from the transparent conductive layer. In addition, the sensing electrode traces 103d should be insulated from other touch electrode traces and driving electrodes or sensing electrodes, so it is necessary to provide slits 103e, 103g, etc. to insulate the traces from other parts.

Next, please refer to FIG. 6 and FIG. 7 , FIG. 6 is an enlarged schematic diagram of the driving electrode part in FIG. 5 , and FIG. 7 is an enlarged schematic diagram of the wiring area in FIG. 5 . FIG. 6 shows the positional relationship among the transparent conductive layer 103 , the black matrix 102 and the color unit layer 104 . In the direction of light transmission, the longitudinal slit 103c in the transparent conductive layer 103 overlaps with a row of color resists, and since the color resists correspond to the sub-pixel units one by one, it is equivalent to the slit 103c of the transparent conductive layer 103 It overlaps with the sub-pixel units in the same column; the horizontal slit 103 g between the touch electrodes overlaps with the lateral part of the black matrix 102 . FIG. 7 shows the positional relationship among the sensing electrode lines 103d, the black matrix 102, and the color unit layer 104 in the transparent conductive layer 103. In the direction of light transmission, the sensing electrode traces 103d pass through a certain trace layout, so that the vertical portion 103e of the slit between the sensing electrode traces and the sensing electrode traces corresponds to a column, and overlaps with the same column of color resistance; The lateral portion 103 g of the sensing electrode trace and the slit of the sensing electrode trace overlaps with the lateral portion of the black matrix 102 .

In the above structure, the longitudinal slit 103c and the longitudinal portion 103e of the slit are collectively defined as the first direction slit, the transverse slit of the transparent conductive layer is defined as the second direction slit, and the width of the first direction slit is at least one The width of the light-transmitting area is at most the sum of the widths of N (N is a natural number) light-transmitting areas and the widths of N+1 longitudinal opaque areas of the black matrix. Since the slits in the second direction are overlapped and covered by the black matrix, they cannot transmit light, and will not bring visible effects to the image, and will not affect the display effect; the slits in the first direction overlap with one or more columns of color resistance, and because of the It is set in one-to-one correspondence with the sub-pixel units, so it is only necessary to adjust the data driving unit so that in the case of a solid-color screen, the driving voltage of the sub-pixel unit overlapping with the slit in the first direction is different from the driving voltage of other sub-pixel units in the first direction. The luminance of the sub-pixel units with overlapped slits is the same as the luminance of sub-pixel units in other columns. It is specifically divided into: in a normally black touch display panel, adjust the data driving unit so that the driving voltage of the sub-pixel unit overlapping with the slit in the first direction is lower than the driving voltage of other sub-pixel units in the solid-color screen, or The driving voltage of the sub-pixel units in other columns is higher than that of the sub-pixel units overlapping with the slits in the first direction; in the normally white mode touch display panel, the data driving unit is adjusted so that when the solid color screen is in contact with the slits in the first direction The driving voltage of sub-pixel units overlapping with slits is higher than that of sub-pixel units in other columns, or the driving voltage of sub-pixel units in other columns is lower than that of sub-pixel units overlapping with slits in the first direction. Through electrical adjustment, reducing the brightness of the sub-pixel unit at the overlap of the slit or increasing the brightness of the sub-pixel unit at the ITO coverage can eliminate the visual effect of the graphics originally perceived by the human eye at the slit and improve the penetration The consistency of the rate is achieved, the seam is hidden, and the display effect is improved. When the screen is black, since the difference between light and dark between the overlapped part and the non-overlapped part of the slits cannot be perceived by human eyes, the data driving unit may not be adjusted.

FIG. 8 is a schematic structural diagram of a transparent conductive layer in another embodiment of Example 1, and the cross-sectional structure of this embodiment is also shown in FIG. 4 . As shown in FIG. 8 , the transparent conductive layer includes a plurality of driving electrodes 103 a and a plurality of sensing electrodes 103 b , and the mutual capacitance formed between the driving electrodes 103 a and the sensing electrodes 103 b is used for detecting a touch action. Specifically, the driving electrodes 103a are arranged in a matrix in the working area 19a, and the sensing electrodes 103b are arranged between two rows of driving electrodes 103a; the driving electrodes 103a are respectively connected to driving signals in the peripheral area 19b. In the working area 19a, each driving electrode 103a, sensing electrode 103b and the intermediate insulating medium form a mutual capacitance, for example, capacitances C1 and C2 shown in FIG. The mutual capacitance formed between them, when a touch action occurs in the region where the driving electrode 103a and the sensing electrode 103b of the capacitor C1 are located, the value of the mutual capacitance will change, and the touch position will be detected.

The transparent conductive layer 103 further includes a plurality of slits 103c, and the slits 103c are arranged along the longitudinal direction. Since the driving electrodes 103 a and the sensing electrodes 103 b are formed by etching the same transparent conductive layer 103 , it is necessary to provide slits 103 c between adjacent electrodes to insulate them from each other. At the same time, the driving electrodes 103a and the sensing electrodes 103b are connected to external driving signals through wires, for example, the wires 103d connect the driving electrodes 103a to the driving signals, and the wires 103d are also etched from a transparent conductive layer, and The wiring 103d is to be insulated from other wirings and driving electrodes or sensing electrodes, so longitudinal slits 103e etc. need to be provided to insulate the wiring from other parts.

Next, please refer to FIG. 9 . FIG. 9 is a partially enlarged schematic diagram of FIG. 8 . In the direction of light transmission, the longitudinal slits 103c and 103e of the transparent conductive layer 103 overlap with the color resists of the same column, and the horizontal slits 103g overlap with the lateral part of the black matrix 102. Similarly, as long as the data drive is adjusted unit, so that under the same brightness, the driving voltage of the sub-pixel unit overlapping with the slit in the first direction is not equal to the driving voltage of the sub-pixel unit in other columns, which can eliminate the visible graphics caused by the slit originally perceived by the human eye. Effect, improve the consistency of the penetration rate, realize the hiding of the engraved seam, and improve the display effect.

In other embodiments, the transparent conductive layer can also be arranged on the inner side of the color filter substrate, which is an INCELL capacitive touch display device, and can also achieve the same technical effect. Specifically, the transparent conductive layer is arranged on the Below the black matrix. For the plug-in touch device, the same technical effect can also be achieved.

In the first embodiment, the color unit is a color resist, and generally a liquid crystal display needs to be used in combination with a color filter to form a color picture. In other implementation manners, the color unit may be an organic light emitting display unit, and the organic light emitting display unit is generally arranged on an array unit. In the direction of light transmission, the same technical effect can also be achieved by overlapping the vertical slits between the driving electrodes and the sensing electrodes or the vertical slits between the lines of the touch electrodes and one or more columns of organic light-emitting display units.

In Embodiment 1, the material of the transparent conductive layer is indium tin oxide. In other embodiments, the transparent conductive layer may also be made of materials such as indium zinc oxide, carbon nanotubes, or aluminum-titanium co-doped zinc oxide.

Embodiment two

FIG. 10 is a schematic cross-sectional view of a capacitive touch display device provided by Embodiment 2 of the present invention. As shown in the figure, the capacitive touch display device includes a touch structure 20 , an array substrate 21 and a display layer 23 disposed between the touch structure 20 and the array substrate 21 . In the second embodiment, the display layer 23 is a liquid crystal layer. The array substrate 21 is provided with a sub-pixel unit array (not shown) and a data driving unit (not shown) towards the inner side of the touch control structure 20 .

The touch structure 20 sequentially includes an upper polarizer 208 , a transparent conductive layer 203 , an insulating layer 205 , a metal bridge layer 206 , a color filter substrate 201 , a black matrix 202 disposed inside the color filter substrate 201 , and a color unit layer 204 . Wherein, the black matrix 202 is provided with a plurality of light-transmitting regions 2021 , and the color unit layer 204 includes color resists of various colors. In the direction of light transmission, the color resists of the multiple colors are arranged according to a certain rule, and are arranged corresponding to the light transmission area 2021 of the black matrix 202 .

The transparent conductive layer 203, the insulating layer 205, and the metal bridge layer 206 are used to form a touch layer. In the second embodiment, the touch structure is a cross-bridge mutual capacitance touch structure. Specifically, please refer to FIG. 11 , the touch layer includes a plurality of rectangular driving electrodes 203 a and a plurality of sensing electrodes 203 b, and the driving electrodes 203 a and sensing electrodes 203 b are formed by etching the transparent conductive layer 203 . Wherein, the plurality of driving electrodes 203a are connected to each other in the row direction through the first bridges 2031 located on the transparent conductive layer 203 to form a plurality of driving lines 2032, and the plurality of sensing electrodes 203b are connected in the column direction through the first bridges 2031 located in the metal bridges. The second bridges 2033 of the bridge layer 206 are connected to form a plurality of sensing lines 2034 .

Next, please refer to FIG. 12 . FIG. 12 is an enlarged schematic diagram of a part of the structure in FIG. 11 , and FIG. 12 shows the positional relationship of the transparent conductive layer 203 , the black matrix 202 , and the color unit layer 204 . Slits 203c and 203g are provided between the driving electrode 203a and the sensing electrode 203b to insulate them from each other. In the direction of light transmission, the lateral slit 203g of the transparent conductive layer 203 overlaps with the lateral portion of the black matrix 202, so the lateral slit 203g is invisible and does not affect the display effect. The minimum width of the longitudinal slit 203c is the width of one light-transmitting region, and the maximum is the sum of the widths of N (N is a natural number) light-transmitting regions and N+1 vertical opaque regions of the black matrix. The longitudinal slit 203c overlaps with one or more columns of color resists, defining the longitudinal slits as the first direction slits, and the horizontal slits as the second direction slits, and since the color resists are set in one-to-one correspondence with the sub-pixel units, Therefore, as long as the data driving unit is adjusted, the driving voltage of the sub-pixel unit overlapping with the slit in the first direction is different from the driving voltage of the sub-pixel unit in other columns in the case of a pure color screen, and the brightness of the sub-pixel unit overlapping with the slit in the first direction Same brightness as other column sub-pixel units. It is specifically divided into: in a normally black touch display panel, adjust the data driving unit so that the driving voltage of the sub-pixel unit overlapping with the slit in the first direction is lower than the driving voltage of other sub-pixel units in the solid-color screen, or The driving voltage of the sub-pixel units in other columns is higher than that of the sub-pixel units overlapping with the slits in the first direction; in the normally white mode touch display panel, the data driving unit is adjusted so that when the solid color screen is in contact with the slits in the first direction The driving voltage of sub-pixel units overlapping with slits is higher than that of sub-pixel units in other columns, or the driving voltage of sub-pixel units in other columns is lower than that of sub-pixel units overlapping with slits in the first direction. Through electrical adjustment, reducing the brightness of the sub-pixel unit at the overlap of the slit or increasing the brightness of the sub-pixel unit at the ITO coverage can eliminate the visual effect of the graphics originally perceived by the human eye at the slit and improve the penetration The consistency of the rate is achieved, the seam is hidden, and the display effect is improved. When the screen is black, since the difference between light and dark between the overlapped part and the non-overlapped part of the slits cannot be perceived by human eyes, the data driving unit may not be adjusted.

Fig. 13 is a schematic diagram of another embodiment of the second embodiment. As shown in Fig. 13, a metal grid layer 207' is also arranged between the transparent conductive layer 203' and the upper polarizer 208, and the metal grid layer 207' and the transparent conductive layer 203' are electrically connected through direct contact. The metal grid layer 207' also includes a plurality of rectangular electrodes, the hollowed out parts of the rectangular electrodes overlap with the color units, the non-hollowed out parts overlap with the opaque parts of the black matrix 202', and the plurality of rectangular electrodes are respectively Corresponding to the driving electrodes and the sensing electrodes, that is, the shape of the edges of the rectangular electrodes is consistent with or close to the driving electrodes and the sensing electrodes. In fact, in another implementation manner of the second embodiment, the sensing electrodes and the driving electrodes respectively have a double-layer structure, including a metal grid layer 207' and a transparent conductive layer 203'. Because the material of the transparent conductive layer 203 ′ is generally metal oxide, its resistance is very high, and arranging a metal grid layer 207 ′ can reduce the resistance of the touch structure, thereby reducing power consumption.

In other embodiments, the transparent conductive layer can also be arranged on the inner side of the color filter substrate, that is, an INCELL capacitive touch display device, which can also achieve the same technical effect. For the plug-in touch device, The same technical effect can also be achieved.

In the second embodiment, the color unit is a color resist, and generally a liquid crystal display needs to be used in combination with a color filter to form a color picture. In other implementation manners, the color unit may be an organic light emitting display unit, and the organic light emitting display unit is generally arranged on an array unit. In the direction of light transmission, the same technical effect can also be achieved by overlapping the vertical slits between the driving electrodes and the sensing electrodes or the vertical slits between the lines of the touch electrodes and one or more columns of organic light-emitting display units.

In the second embodiment, the material of the transparent conductive layer is indium tin oxide. In other embodiments, the transparent conductive layer may also be made of materials such as indium zinc oxide, carbon nanotubes, or aluminum-titanium co-doped zinc oxide.

Embodiment Three

FIG. 14 shows a cross-sectional view of the capacitive touch display device provided in Embodiment 3. As shown in the figure, the capacitive touch display device includes a touch structure 30, an array substrate 31 and a touch structure 30 and an array substrate. The display layer 33 between the substrates 31 . The array substrate 33 is provided with an array of sub-pixel units towards the inner side of the touch structure 30 .

The touch structure 30 sequentially includes an upper polarizer 308 , a first transparent conductive layer 303 , an insulating layer 305 , a second transparent conductive layer 306 , a color filter substrate 301 , a black matrix 302 , and a color unit layer 304 . The black matrix 302 has a plurality of light-transmitting regions 3021 . The color unit layer 304 includes color resistances of multiple colors, specifically R color resistances, G color resistances, and B color resistances, and the color resistances of the multiple colors are covered on the transparent surface of the black matrix 302 according to a certain arrangement rule. In the light area 3021. Specifically, in the third embodiment, the R color resistance, G color resistance, and B color resistance are arranged in multiple columns in the column direction, and the R color resistance, G color resistance, and B color resistance are alternately arranged in the row direction. arrangement.

FIG. 15 is a top view of the touch layer of the third embodiment. As shown in FIG. 15, the first transparent conductive layer 303 includes a plurality of driving electrodes 303a and a first bridge 303b, and the plurality of first bridges 303b connect the The plurality of driving electrodes 303a are connected into a plurality of driving lines extending in the lateral direction. The second transparent conductive layer 306 includes a plurality of sensing electrodes 306a and a second bridge 306b, and the plurality of second bridges 306b connect the plurality of sensing electrodes 306a into a plurality of sensing lines extending in the longitudinal direction. In the direction of light transmission, the longitudinal slit 35c between the driving electrode 303a and the sensing electrode 306a overlaps with one or more columns of color resists, and the width of the longitudinal slit 203c is at least the width of a light transmission area, and at most is The sum of the widths of N (N is a natural number) light-transmitting regions and the widths of N+1 longitudinal opaque regions of the black matrix. The lateral slit 35g overlaps with the lateral portion of the black matrix 302 . In the direction of light transmission, the horizontal part of the horizontal slit 35g is blocked by the black matrix 302, which will not affect the display effect; the vertical slit 35c is overlapped with one or more columns of color color resists, and the definition The vertical slit is the first direction slit, the horizontal slit is the second direction slit, and since the color resistance is set in one-to-one correspondence with the sub-pixel unit, the data drive unit is adjusted so that when the solid color screen is displayed, it is aligned with the first direction. The driving voltage of the sub-pixel unit overlapping with the slit in the first direction is different from the driving voltage of the sub-pixel unit in other columns, and the luminance of the sub-pixel unit overlapping with the slit in the first direction is the same as that of the sub-pixel unit in other columns. It is specifically divided into: in a normally black touch display panel, adjust the data driving unit so that the driving voltage of the sub-pixel unit overlapping with the slit in the first direction is lower than the driving voltage of other sub-pixel units in the solid-color screen, or The driving voltage of the sub-pixel units in other columns is higher than that of the sub-pixel units overlapping with the slits in the first direction; in the normally white mode touch display panel, the data driving unit is adjusted so that when the solid color screen is in contact with the slits in the first direction The driving voltage of sub-pixel units overlapping with slits is higher than that of sub-pixel units in other columns, or the driving voltage of sub-pixel units in other columns is lower than that of sub-pixel units overlapping with slits in the first direction. Through electrical adjustment, reducing the brightness of the sub-pixel unit at the overlap of the slit or increasing the brightness of the sub-pixel unit at the ITO coverage can eliminate the visual effect of the graphics originally perceived by the human eye at the slit and improve the penetration The consistency of the rate is achieved, the seam is hidden, and the display effect is improved.

In other embodiments, the first transparent conductive layer and the second transparent conductive layer are respectively located on the inside or outside of the color filter substrate and the array substrate, as long as the slits between the two are aligned with one or more columns in the direction of light transmission. The same technical effect can also be achieved by the color resistance of columns or the overlapping of one or more columns of sub-pixel units.

In the third embodiment, the color unit is a color resist, and generally a liquid crystal display needs to be used in combination with a color filter to form a color picture. In other implementation manners, the color unit may be an organic light emitting display unit, and the organic light emitting display unit is generally arranged on an array unit. In the direction of light transmission, the same technical effect can also be achieved by overlapping the vertical slits between the driving electrodes and the sensing electrodes or the vertical slits between the lines of the touch electrodes and one or more columns of organic light-emitting display units.

In the third embodiment, the material of the transparent conductive layer is indium tin oxide. In other embodiments, the transparent conductive layer may also be made of materials such as indium zinc oxide, carbon nanotubes, or aluminum-titanium co-doped zinc oxide.

Obviously, those skilled in the art can make various changes and modifications to the invention without departing from the spirit and scope of the invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (12)

1. A touch display panel, comprising: first substrate; a second substrate opposite to the first substrate; A black matrix formed inside the first substrate, the black matrix is provided with a plurality of light-transmitting regions; a plurality of sub-pixel units formed on the second substrate and arranged in an array; a data driving unit, configured to output a driving voltage to the sub-pixel unit; The sub-pixel units are in one-to-one correspondence with the light-transmitting regions of the first substrate; The touch layer includes at least one transparent conductive layer, and the transparent conductive layer includes a slit; the slit includes a slit in a first direction and a slit in a second direction; the slit in the first direction and the slit parallel to it One or more columns of sub-pixel units overlap; In the case of a solid-color picture, the driving voltage of the sub-pixel unit overlapping the slit in the first direction is different from that of other sub-pixel units, and the brightness of the sub-pixel unit overlapping the slit in the first direction is the same as that of the sub-pixel unit in other columns. 2 . The touch display panel according to claim 1 , wherein the transparent conductive layer is located on the outside of the first substrate or on the inside of the first substrate. 3 . The touch display panel according to claim 1 , wherein, in the direction of light transmission, the transparent conductive layer is disposed under the black matrix. 4 . 4 . The touch display panel according to claim 1 , wherein touch electrodes, touch electrode traces, and dummy traces are distributed on the transparent conductive layer. 5 . The touch display panel according to claim 1 , wherein, in the light-transmitting direction, the slits in the second direction of the transparent conductive layer overlap with the opaque regions in the lateral direction of the black matrix. 6 . 6 . The touch display panel according to claim 1 , wherein a color resist unit is disposed in the light-transmitting region. 7 . 7. The touch display panel according to claim 1, wherein the touch display panel is in a normally black mode, and in a solid color screen, the driving voltage ratio of the sub-pixel unit overlapping with the slit in the first direction is The driving voltage of the sub-pixel units in other columns is low, or the touch display panel is in the normally white mode, and the driving voltage of the sub-pixel units overlapping with the slits in the first direction is higher than the driving voltage of the sub-pixel units in other columns in the case of a solid color screen . 8 . The touch display panel according to claim 1 , wherein the width of the slits in the first direction is at least the width of one light-transmitting region, and at most is the width of N light-transmitting regions and N+1 The sum of the widths of the vertical opaque areas of the black matrix. 9. The touch display panel according to claim 1, wherein the touch layer further comprises a metal mesh layer, and the metal mesh layer is electrically connected to the transparent conductive layer. 10. The touch display panel according to claim 1, wherein the touch layer comprises a first transparent conductive layer and a second transparent conductive layer, and in the direction of light transmission, the first transparent conductive layer and the second transparent conductive layer The slits in the first direction between the transparent conductive layers overlap with one or more columns of sub-pixel units parallel thereto. 11. A touch display device, comprising the touch display panel according to any one of claims 1-10. 12. A driving method for a touch display panel, the touch display panel comprising: first substrate; a second substrate opposite to the first substrate; A black matrix formed inside the first substrate, the black matrix is provided with a plurality of light-transmitting regions; a plurality of sub-pixel units formed on the second substrate and arranged in an array; a data driving unit, configured to output a driving voltage to the sub-pixel unit; The sub-pixel units are in one-to-one correspondence with the light-transmitting regions of the first substrate; The touch layer includes at least one transparent conductive layer, and the transparent conductive layer includes a slit; the slit includes a slit in a first direction and a slit in a second direction; the slit in the first direction and the slit parallel to it One or more columns of sub-pixel units overlap; Adjust the output driving voltage of the data driving unit so that in the pure screen, the driving voltage of the sub-pixel unit overlapping with the slit in the first direction is different from the driving voltage of the sub-pixel unit in other columns, and the sub-pixel unit overlapping with the slit in the first direction The luminance of is the same as the luminance of other column sub-pixel units.