CN114994995A - Display panel and display device - Google Patents
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- CN114994995A CN114994995A CN202210760370.XA CN202210760370A CN114994995A CN 114994995 A CN114994995 A CN 114994995A CN 202210760370 A CN202210760370 A CN 202210760370A CN 114994995 A CN114994995 A CN 114994995A
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- 239000004065 semiconductor Substances 0.000 claims description 9
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- 230000000694 effects Effects 0.000 abstract description 9
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136204—Arrangements to prevent high voltage or static electricity failures
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136286—Wiring, e.g. gate line, drain line
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- Chemical & Material Sciences (AREA)
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Abstract
The embodiment of the invention discloses a display panel and a display device. The display panel comprises a plurality of signal lines, a plurality of pixel electrodes and at least one group of discharge bulges, the same group of discharge bulges comprises two discharge bulges which are opposite to each other, the two discharge bulges are respectively and electrically connected with the adjacent pixel electrodes and the signal lines, and the vertical projections of the two discharge bulges on the light emergent surface of the display panel are not overlapped; the signal lines include data signal lines and scanning signal lines; the discharge projection is located in a region surrounded by two data signal lines and two scanning signal lines adjacent to the pixel electrode. In the invention, the electrostatic charge accumulated on the pixel electrode can be released through the discharge bulge, so that the electrostatic charge is prevented from accumulating on the pixel electrode, and the thin film transistors connected with the pixel electrodes are prevented from being damaged by static electricity; in addition, the interference of the signal lines to the electric potential of the pixel electrode when the signal lines transmit signals can be prevented, the uneven brightness of the pixels of two adjacent frames is avoided, and the display effect of the display panel is improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a display panel and a display device.
Background
In a conventional liquid crystal display panel, a pixel is composed of a common electrode, a liquid crystal layer and a pixel electrode, the pixel electrode is connected to a data signal line through a thin film transistor, the common electrode receives a common potential signal, a gate of the thin film transistor is connected to a scanning signal line, and the thin film transistor is controlled to be turned on through a scanning signal, so that the pixel is controlled to be turned on.
However, in the display panel in the prior art, a large amount of static electricity is generated during the manufacturing or transporting process, and after a large amount of static electricity is accumulated, the static electricity can be discharged through the thin film transistor, which damages the thin film transistor, so that the pixel cannot be lighted, and the product yield is affected.
Disclosure of Invention
In view of the above, the present invention provides a display panel and a display device to improve the antistatic capability of the display panel and improve the yield of products.
In a first aspect, an embodiment of the present invention provides a display panel, including a plurality of signal lines, a plurality of pixel electrodes, and at least one set of discharge protrusions, where the same set of discharge protrusions includes two discharge protrusions that are opposite to each other, and the two discharge protrusions are respectively electrically connected to the adjacent pixel electrodes and the signal lines, and vertical projections of the two discharge protrusions on a light exit surface of the display panel do not overlap;
the signal lines include data signal lines extending in a first direction and arranged in a second direction, and scan signal lines extending in the second direction and arranged in the first direction; wherein the first direction intersects the second direction;
the discharge projection is located in an area surrounded by the two data signal lines and the two scanning signal lines adjacent to the pixel electrode.
In a second aspect, an embodiment of the present invention further provides a display device, including the display panel according to the first aspect of the present invention.
The display panel provided by the embodiment of the invention comprises a plurality of signal lines, a plurality of pixel electrodes and at least one group of discharge bulges, wherein the same group of discharge bulges comprises two discharge bulges which are opposite to each other, the two discharge bulges are respectively and electrically connected with the adjacent pixel electrodes and the signal lines, and the vertical projections of the two discharge bulges on the light-emitting surface of the display panel are not overlapped. Through the scheme, the electrostatic charges accumulated at the pixel electrode can be released to the discharge protruding part electrically connected with the signal line through the discharge protruding part electrically connected with the pixel electrode, so that the electrostatic charges in the pixel electrode are released, the electrostatic charges are prevented from being accumulated on the pixel electrode, and the thin film transistors connected with the pixel electrodes are prevented from being damaged by electrostatic shock. In addition, the signal lines include data signal lines and scanning signal lines, the data signal lines extend along a first direction and are arranged along a second direction, and the scanning signal lines extend along the second direction and are arranged along the first direction; the discharge bulge is located the region that two data signal lines and two scanning signal lines that are adjacent with the pixel electrode enclose, under this kind of mode of setting, the bulge that discharges is not overlapped at the vertical projection on display panel play plain noodles with the signal line that does not connect with rather than the electricity, can not form coupling capacitance, can avoid the signal line to cause the interference to the electric potential that is connected with the pixel electrode of discharge bulge when transmitting the signal, the luminance jump of pixel region under adjacent two frames among the prior art has been solved, lead to the problem of display panel scintillation, display panel's display effect has been improved.
Drawings
FIG. 1 is a schematic diagram of a display panel in the prior art;
FIG. 2 is an enlarged schematic view of FIG. 1 at A;
fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 4 is an enlarged schematic view of FIG. 3 at B;
FIG. 5 is a schematic cross-sectional view taken along line C-C' of FIG. 4;
fig. 6 to 8 are schematic partial enlarged structural diagrams of three display panels according to an embodiment of the invention;
fig. 9 is a schematic partial enlarged structure view of another display panel according to an embodiment of the invention;
FIG. 10 is a schematic cross-sectional view taken along line D-D' of FIG. 9;
fig. 11 to 13 are schematic partial enlarged structural diagrams of three display panels according to an embodiment of the present invention;
fig. 14 is a schematic cross-sectional view of a display panel according to an embodiment of the invention;
fig. 15 is a schematic cross-sectional view of another display panel according to an embodiment of the invention;
fig. 16 is a schematic partial enlarged structure view of another display panel according to an embodiment of the invention;
fig. 17 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic structural diagram of a display panel in the prior art, and fig. 2 is an enlarged structural diagram of fig. 1 at a, as shown in fig. 1 and fig. 2, in the prior art, in order to improve the problem of electrostatic damage to the tft, a discharge structure 3 'connected to each sub-pixel electrode 2' is provided. However, the inventors have found that the projection overlap between the discharge structure 3 'and the gate trace 5' can generate coupling capacitance. When the gate trace 5 ' transmits a signal, the potential of the sub-pixel electrode 2 ' connected to the discharge structure 3 ' is changed. In order to avoid polarization of liquid crystal molecules due to an electric field in a fixed direction, the liquid crystal display panel provides data signals with different potentials to the sub-pixel electrode 2' in two adjacent frames to form an electric field with opposite polarity but same electric field strength.
In view of the above drawbacks of the prior art, the inventor proposes a technical solution of the embodiment of the present invention. Specifically, the embodiment of the present invention provides a display panel, which includes a plurality of signal lines, a plurality of pixel electrodes, and at least one set of discharge protrusions, where the same set of discharge protrusions includes two discharge protrusions opposite to each other, and the two discharge protrusions are respectively electrically connected to the adjacent pixel electrodes and the signal lines, and vertical projections of the two discharge protrusions on a light emitting surface of the display panel are not overlapped;
the signal lines include data signal lines extending in a first direction and arranged in a second direction, and scan signal lines extending in the second direction and arranged in the first direction; wherein the first direction intersects the second direction;
the discharge projection is located in a region surrounded by two data signal lines and two scanning signal lines adjacent to the pixel electrode.
Through the technical scheme, the electrostatic charges accumulated at the pixel electrode can be released to the discharge protruding part electrically connected with the signal line through the discharge protruding part electrically connected with the pixel electrode, so that the electrostatic charges in the pixel electrode are released, the electrostatic charges are prevented from being accumulated on the pixel electrode, and the thin film transistors connected with the pixel electrodes are prevented from being damaged by electrostatic shock. In addition, coupling capacitance cannot be formed between the discharge bulge and the signal line which is not electrically connected with the discharge bulge, so that the interference of the signal line on the potential of the pixel electrode connected with the discharge bulge when the signal line transmits signals can be avoided, the problems of brightness jump of a pixel region under two adjacent frames and flicker of a display panel in the prior art are solved, and the display effect of the display panel is improved.
The above is the core idea of the present invention, and the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.
Fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present invention, fig. 4 is an enlarged structural diagram of fig. 3 at B, and fig. 5 is a schematic structural diagram of a cross section of fig. 4 along a direction C-C'. Referring to fig. 3 to 5, the display panel of the present invention includes a plurality of signal lines 1, a plurality of pixel electrodes 2 and at least one set of discharge protrusions 3, wherein the same set of discharge protrusions 3 includes two discharge protrusions 3 opposite to each other, the two discharge protrusions 3 are electrically connected to the adjacent pixel electrodes 2 and signal lines 1, respectively, and the vertical projections of the two discharge protrusions 3 on the light emitting surface of the display panel are not overlapped;
the signal lines 1 include data signal lines 4 and scanning signal lines 5, the data signal lines 4 extend in a first direction X and are arranged in a second direction Y, and the scanning signal lines 5 extend in the second direction Y and are arranged in the first direction X; wherein the first direction X intersects the second direction Y;
the discharge projection 3 is located in a region surrounded by two data signal lines 4 and two scanning signal lines 5 adjacent to the pixel electrode 2.
Specifically, as shown in fig. 3 to 5, the display panel includes a plurality of signal lines 1, a plurality of pixel electrodes 2, and at least one set of discharge protrusions 3, the same set of discharge protrusions 3 includes two discharge protrusions 3 opposite to each other, and the two discharge protrusions 3 are electrically connected to the adjacent pixel electrodes 2 and signal lines 1, respectively. The term "opposed to each other" means that, in the same group of discharge projections 3, the end of the discharge projection 3 connected to the pixel electrode 2 away from the pixel electrode 2 and the end of the discharge projection 3 connected to the signal line 1 away from the signal line 1 are close to each other and face each other in a direction parallel to the plane of the light emitting surface of the display panel. It is possible to define that the discharge protrusion 3 connected to the pixel electrode 2 is the first discharge protrusion 31 and the discharge protrusion 3 connected to the signal line 1 is the second discharge protrusion 32.
In this arrangement, the electrostatic charges accumulated at the pixel electrode 2 can be discharged to the second discharge protrusion 32 electrically connected to the signal line 1 through the first discharge protrusion 31 electrically connected to the pixel electrode 2, thereby completing the discharge of the electrostatic charges in the pixel electrode 2, preventing the electrostatic charges from accumulating on the pixel electrode 2, and preventing the tft connected to each pixel electrode 2 from being damaged by electrostatic shock. According to the test result, the probability of electrostatic breakdown of the thin film transistor in the prior art in the manufacturing process is between 0.5% and 3%, while the probability of electrostatic breakdown of the thin film transistor in the manufacturing process is basically 0%.
Meanwhile, the perpendicular projections of the two discharge protrusions 3 in the same group of discharge protrusions 3 on the light emitting surface of the display panel do not overlap, that is, a certain interval exists between the two discharge protrusions 3 in the same group of discharge protrusions 3 along the plane direction parallel to the light emitting surface of the display panel.
Referring to fig. 3 to 5, the signal line 1 includes a data signal line 4 and a scan signal line 5, the data signal line 4 extends along a first direction X and is arranged along a second direction Y, and each data signal line 4 is connected to the pixel electrodes 2 arranged along the first direction X to transmit a data signal to each pixel electrode 2. The scanning signal lines 5 extend in the second direction Y and are arranged in the first direction X, and each scanning signal line 5 is connected to the pixel electrodes 2 arranged in the second direction Y to transmit a scanning signal to each pixel electrode 2. The first direction X intersects with the second direction Y, and the first direction X and the second direction Y are perpendicular to each other in the drawing, but the actual arrangement is not limited thereto.
Further, each pixel electrode 2 is separated by two data signal lines 4 and two scanning signal lines 5 adjacent thereto, and constitutes each sub-pixel region 6. The discharge projections 3 are located in regions surrounded by two data signal lines 4 and two scanning signal lines 5 adjacent to the pixel electrodes 2, that is, two discharge projections 3 in each set of discharge projections 3 are each located in a sub-pixel region 6 corresponding to the set of discharge projections 3. In this arrangement, the discharge protrusion 3 (here, a group of structures of the first discharge protrusion 31 and the second discharge protrusion 32) and the signal line 1 (fig. 4 shows the scanning signal line 5) not electrically connected thereto do not overlap with each other in the vertical projection on the light-emitting surface of the display panel, so that no coupling capacitor is formed, the interference of the signal line 1 not electrically connected thereto on the potential of the pixel electrode 2 connected with the discharge protrusion 3 during signal transmission can be avoided, the problems of brightness jump of the pixel region in two adjacent frames and display panel flicker in the prior art are solved, and the display effect of the display panel is improved
In the same group of discharge protrusion portions 3, the second discharge protrusion portion 32 may be electrically connected to the data signal line 4 or the scan signal line 5, which is not limited in the embodiment of the present invention, and a person skilled in the art may design the discharge protrusion portions 3 according to actual situations to ensure that the discharge protrusion portions 3 are located in the sub-pixel regions 6.
Here, fig. 4 exemplarily shows that each sub-pixel region 6 includes a group of discharge protrusions 3 therein, and the actual arrangement is not limited thereto. Multiple groups of discharge protrusions 3 can be arranged in the same sub-pixel region 6, and the discharge effect of electrostatic charges can be improved by arranging the multiple groups of discharge protrusions 3. In addition, the embodiment of the present invention does not limit the specific shape of the discharge protrusion 3, and those skilled in the art can set the discharge protrusion according to actual requirements, and fig. 4 exemplarily shows that the discharge protrusion 3 is a triangular discharge protrusion, and sharp corners of two triangular discharge protrusions are opposite to each other, which is beneficial to the transmission of electrostatic charges. In other embodiments, the discharge protrusion 3 may be configured as a square or circular discharge protrusion, etc., so as to ensure that the electrostatic charge can be transmitted between two opposite discharge protrusions 3.
The display panel provided by the embodiment of the invention comprises a plurality of signal lines, a plurality of pixel electrodes and at least one group of discharge bulges, wherein the same group of discharge bulges comprises two discharge bulges which are opposite to each other, the two discharge bulges are respectively and electrically connected with the adjacent pixel electrodes and the signal lines, and the vertical projections of the two discharge bulges on the light-emitting surface of the display panel are not overlapped. Through the scheme, the electrostatic charges accumulated at the pixel electrode can be released to the discharge protruding part electrically connected with the signal line through the discharge protruding part electrically connected with the pixel electrode, so that the electrostatic charges in the pixel electrode are released, the electrostatic charges are prevented from being accumulated on the pixel electrode, and the thin film transistors connected with the pixel electrodes are prevented from being damaged by electrostatic shock. In addition, the signal lines include data signal lines extending in the first direction and arranged in the second direction, and scan signal lines extending in the second direction and arranged in the first direction; the discharge bulge is located the region that two data signal lines and two scanning signal lines that are adjacent with the pixel electrode enclose, under this kind of mode of setting, the bulge that discharges is not overlapped at the vertical projection on display panel play plain noodles with the signal line that does not connect with rather than the electricity, can not form coupling capacitance, can avoid the signal line to cause the interference to the electric potential that is connected with the pixel electrode of discharge bulge when transmitting the signal, the luminance jump of pixel region under adjacent two frames among the prior art has been solved, lead to the problem of display panel scintillation, display panel's display effect has been improved.
For example, referring to fig. 3 to 5, in a possible embodiment, a plurality of pixel electrodes 2 arranged in sequence along the first direction X may be arranged to form a plurality of pixel electrode columns 201; along the second direction Y, the data signal lines 4 and the pixel electrode columns 201 are sequentially and alternately arranged, and a plurality of pixel electrodes 2 in the same pixel electrode column 201 are electrically connected with the same data signal line 4 through the thin film transistor 8; the two discharge projections 3 of the same group are electrically connected to the pixel electrodes 2 and the data signal lines 4 adjacent in the second direction Y, respectively.
Specifically, as shown in fig. 3 to 5, the plurality of pixel electrodes 2 arranged in the first direction X constitute a plurality of pixel electrode columns 201, and the plurality of pixel electrode columns 201 are arranged in the second direction Y. The data signal lines 4 arranged in the second direction Y and the second direction Y pixel electrode columns 201 are alternately arranged in sequence. Each pixel electrode 2 is correspondingly provided with one thin film transistor 8, and each pixel electrode 2 in the same pixel electrode column 201 is electrically connected with the same data signal line 4 through the corresponding thin film transistor 8.
Further, referring to fig. 3 to 5, in the present embodiment, two discharge protrusions 3 of the same group may be disposed to be electrically connected to the pixel electrode 2 and the data signal line 4 adjacent to each other along the second direction Y, in other words, in the same group of discharge protrusions 3, the first discharge protrusion 31 is electrically connected to the pixel electrode 2 in the corresponding sub-pixel region 6; the second discharge protrusion 32 is electrically connected to the data signal line 4 adjacent to the pixel electrode 2.
As shown in fig. 5, when the display panel according to the embodiment of the present invention is manufactured, each pixel electrode 2 may be formed first, and then each data signal line 4 may be formed, and when each data signal line 4 is manufactured, each set of discharge protrusions may be formed at the same time. At this time, the first discharge protrusion 31 in the same group may be directly overlapped on the upper layer of the corresponding pixel electrode 2, so as to realize the electrical connection with the pixel electrode 2, without additional arrangement of structures such as via holes, etc., thereby simplifying the manufacturing process of the display panel and reducing the manufacturing difficulty of the display panel.
It is understood that when the discharge protrusion 3 is formed simultaneously with the data signal line 4, the second discharge protrusion 32 and the data signal line 4 should be of an integral structure, and the discharge protrusion 3 and the data signal line 4 are shown in different filling patterns in fig. 4 and 5 for clarity of illustrating a specific arrangement manner of the discharge protrusion 3.
In addition, the discharge protrusion 3 can be prepared after the data signal line 4 is formed, and in this case, there should be an overlapping region between the second discharge protrusion 32 and the vertical projection of the data signal line 4 on the light-emitting surface of the display panel, that is, a partial region of the second discharge protrusion 32 in fig. 4 and 5 should be covered on the data signal line 4. The present invention will not be described in detail with respect to such an embodiment, and a person skilled in the art can know how to implement such an arrangement specifically from the content described in the present application.
Optionally, fig. 6 to fig. 8 are schematic views of partial enlarged structures of three display panels provided in an embodiment of the present invention. Referring to fig. 3 and 6 to 8 in combination, in the embodiment of the present invention, two discharge protrusions 3 in the same group may be disposed to be electrically connected to the pixel electrode 2 and the first data signal line 41, respectively, and/or two discharge protrusions 3 in the same group may be disposed to be electrically connected to the pixel electrode 2 and the second data signal line 42, respectively; the first data signal line 41 is a data signal line 4 connected to the current pixel electrode 2 through a thin film transistor 8; the second data signal line 42 is located on a side of the current pixel electrode 2 away from the first data signal line 41 in the second direction Y.
As shown in fig. 3, 6 to 8, the data signal lines 4 are provided on both sides of each pixel electrode 2 in the second direction Y. It is defined that the data signal line 4 connected to the current pixel electrode 2 through the thin film transistor 8 is a first data signal line 41, and the data signal line 4 located on the side of the current pixel electrode 2 away from the first data signal line 41 is a second data signal line 42, that is, the data signal line 4 adjacent to the current pixel electrode 2 but not connected to the current pixel electrode 2 in the second direction Y is the second data signal line 42.
In the present invention, when a group of discharge protrusion portions 3 is included in each sub-pixel region 6, two discharge protrusion portions 3 in the same group may be disposed to be electrically connected to the pixel electrode 2 and the first data signal line 41, as shown in fig. 3, or two discharge protrusion portions 3 in the same group may be disposed to be electrically connected to the pixel electrode 2 and the second data signal line 42, as shown in fig. 6. That is, the second discharge protrusion 32 of the same group of discharge protrusions 3 may be disposed to be electrically connected to the first data signal line 41 or the second data signal line 42 to discharge the accumulated electrostatic charges through the first data signal line 41 or the second data signal line 42.
In addition, referring to fig. 7, when two or more sets of discharge protrusions 3 are included in each sub-pixel region 6, the second discharge protrusions 32 in the two or more sets of discharge protrusions 3 may be disposed to be electrically connected to the first data signal line 41 or the second data signal line 42. Fig. 7 exemplarily shows two sets of discharge protrusions 3, and the second discharge protrusions 32 of the two sets of discharge protrusions 3 are electrically connected to the first data signal line 41, but the actual arrangement is not limited thereto. In this arrangement, only the discharge protrusion 3 facing the same direction needs to be disposed on the same data signal line 4, and the manufacturing process is simpler.
In addition, as shown in fig. 8, two or more sets of the second discharge protrusions 32 in the discharge protrusions 3 may be provided to connect to different data signal lines 4, for example, as shown in fig. 8, one set of the discharge protrusions 33 may be provided to electrically connect the second discharge protrusion 32 to the first data signal line 41, and the other set of the discharge protrusions 34 may be provided to electrically connect the second discharge protrusion 32 to the second data signal line 42. In this way, the electrostatic charges at the pixel electrode 2 can be discharged through the different data signal lines 4, so that the electrostatic discharge effect can be further improved.
In the above fig. 3 and fig. 6 to fig. 8, only a few optional connection manners of the discharge protrusion 3 and the data signal line 4 are provided, in practical applications, a person skilled in the art may set other optional connection manners according to actual requirements, and it is within the scope of the technical solution protected by the embodiment of the present invention to arbitrarily set two discharge protrusions 3 in the same group of discharge protrusions 3 to be respectively connected to the pixel electrode 2 and the data signal line 4.
Optionally, fig. 9 is a schematic partial enlarged structure of another display panel according to an embodiment of the present invention, fig. 10 is a schematic cross-sectional structure of fig. 9 along a direction D-D', and referring to fig. 3, fig. 9 and fig. 10, in other possible embodiments, a plurality of pixel electrodes 2 arranged in sequence along the second direction Y may be disposed to form a plurality of pixel electrode rows 202; the scanning signal lines 5 and the pixel electrode rows 202 are sequentially and alternately arranged along the first direction X, the pixel electrodes 2 are electrically connected with the data signal lines 4 through the thin film transistors 8, and the control ends 9 of the thin film transistors 8 correspondingly connected with the plurality of pixel electrodes 2 in the same pixel electrode row 202 are electrically connected with the same scanning signal line 5; the two discharge projections 3 of the same group are electrically connected to the pixel electrodes 2 and the scanning signal lines 5 adjacent in the first direction X, respectively.
Specifically, as shown in fig. 3, 9 and 10, the plurality of pixel electrodes 2 arranged in the second direction Y constitute a plurality of pixel electrode rows 202, and the plurality of pixel electrode rows are arranged in the first direction X. The scanning signal lines 5 arranged in the first direction X are sequentially arranged alternately with the pixel electrode rows 202 arranged in the first direction X. The pixel electrodes 2 are each provided with a corresponding thin film transistor 8, and the pixel electrodes 2 are electrically connected to the data signal lines 4 through the corresponding thin film transistors 8.
The thin film transistor 8 includes a first end 10, a second end 11, and a control end 9, the first end 10 of the thin film transistor 8 can be electrically connected to the data signal line 4 and the pixel electrode 2, respectively, the control end 9 of the thin film transistor 8 is connected to the scanning signal line 5, the control ends 9 of the thin film transistors 8 correspondingly connected to the pixel electrodes 2 in the same pixel electrode row 202 are electrically connected to the same scanning signal line 5, and in brief, the control ends 9 of the thin film transistors 8 in the same row arranged along the second direction Y are connected to the same scanning signal line 5. When the control terminal 9 controls the thin film transistor 8 to be conducted, the first terminal 10 is electrically conducted with the second terminal 11, and the data signal line 4 is electrically conducted with the pixel electrode 2, so that a display signal can be transmitted to the pixel electrode 2, and light emitting display is realized. The control terminal 9 may be a gate of the thin film transistor 8, the first terminal 10 may be a source of the thin film transistor 8, and the second terminal 11 may be a drain of the thin film transistor 8, or the first terminal 10 may be a drain of the thin film transistor 8 and the second terminal 11 may be a source of the thin film transistor 8.
Further, still referring to fig. 9 and 10, in the present embodiment, two discharge protrusions 3 of the same group may be disposed to be electrically connected to the pixel electrode 2 and the scanning signal line 5 adjacent in the first direction X, respectively, that is, in the same group of discharge protrusions 3, the first discharge protrusion 31 is electrically connected to the pixel electrode 2 in the corresponding sub-pixel region 6; the second discharge projection 32 is electrically connected to the scanning signal line 5 adjacent to the pixel electrode 2.
Optionally, fig. 11 to fig. 13 are schematic partial enlarged structural views of three display panels according to an embodiment of the present invention. Referring to fig. 9 and 11 to 13, in the present invention, two discharge protrusions 3 of the same group may be disposed to be electrically connected to the pixel electrode 2 and the first scan signal line 51, respectively, and/or two discharge protrusions 3 of the same group may be disposed to be electrically connected to the pixel electrode 2 and the second scan signal line 52, respectively; the first scanning signal line 51 is a scanning signal line 5 connected to the current pixel electrode 2 through the control terminal 9 of the thin film transistor 8; the second scanning signal line 52 is located on a side of the current pixel electrode 2 away from the first scanning signal line 51 in the first direction X.
Specifically, as shown in fig. 9 and 11 to 13, the scanning signal lines 5 are provided on both sides of each pixel electrode 2 in the first direction X. It is defined that the scanning signal line 5 connected to the current pixel electrode 2 through the control terminal 9 of the thin film transistor 8 is a first scanning signal line 51, and the scanning signal line 5 located on the side of the current pixel electrode 2 away from the first scanning signal line 51 is a second scanning signal line 52, that is, in the first direction X, the scanning signal line 5 adjacent to the current pixel electrode 2 but not connected to the current pixel electrode 2 is the second scanning signal line 52.
In the present invention, when a group of discharge protrusion portions 3 is included in each sub-pixel region 6, two discharge protrusion portions 3 in the same group may be disposed to be electrically connected to the pixel electrode 2 and the first scanning signal line 51, as shown in fig. 9, or two discharge protrusion portions 3 in the same group may be disposed to be electrically connected to the pixel electrode 2 and the second scanning signal line 52, as shown in fig. 11. That is, the second discharge protrusion 32 of the same group of discharge protrusions 3 may be disposed to be electrically connected to the first scan signal line 51 or the second scan signal line 52 to discharge the accumulated electrostatic charges through the first scan signal line 51 or the second scan signal line 52.
In addition, referring to fig. 12, when two or more sets of discharge protrusions 3 are included in each sub-pixel region 6, the second discharge protrusions 32 in the two or more sets of discharge protrusions 3 may be disposed to be electrically connected to the first scan signal line 51 or the second scan signal line 52. Fig. 12 exemplarily shows two sets of discharge protrusions 3, and the second discharge protrusions 32 of the two sets of discharge protrusions 3 are electrically connected to the first scan signal line 51, but the actual arrangement is not limited thereto. In this way, only the discharge protrusion 3 facing the same direction needs to be disposed on the same scan signal line 5, and the manufacturing process is simple.
In addition, as shown in fig. 13, two or more sets of the second discharge protrusion portions 32 in the discharge protrusion portions 3 may be provided to be connected to different scanning signal lines 5, for example, as shown in fig. 13, the second discharge protrusion portions 32 in one set of the discharge protrusion portions 3 are electrically connected to the first scanning signal line 51, and the second discharge protrusion portions 32 in the other set of the discharge protrusion portions 3 are electrically connected to the second scanning signal line 52. In this way, the electrostatic charges on the pixel electrode 2 can be discharged through different scanning signal lines 5, and the electrostatic discharge effect can be further improved.
In the above fig. 9 and fig. 11 to fig. 13, there are only a few optional connection manners of the discharge protrusion 3 and the scan signal line 5, in practical applications, a person skilled in the art can set other optional connection manners according to actual requirements, and schemes that two discharge protrusions 3 in the same group of discharge protrusions 3 are arbitrarily set to connect the pixel electrode 2 and the scan signal line 5 are within the scope of the technical solution protected by the embodiment of the present invention.
Optionally, still referring to fig. 10, in a possible embodiment, the scanning signal lines 5 and the discharge protrusions 3 are located on different layers along a direction perpendicular to the light emitting surface of the display panel, and the discharge protrusions 3 and the scanning signal lines 5 are electrically connected through the vias 22.
It is understood that in the display panel, the first insulating layer 17 is disposed between the scan signal line 5 and the pixel electrode 2. In the above embodiments, the discharge protrusion 3 can be directly formed on a side surface of the pixel electrode 2 close to the light emitting surface of the display panel, and the first insulating layer 17 is disposed between the discharge protrusion 3 and the scan signal line 5, i.e. the scan signal line 5 and the discharge protrusion 3 are located on different layers along a direction perpendicular to the light emitting surface of the display panel. In order to electrically connect the discharge protrusion 3 and the scanning signal line 5, the second discharge protrusion 32 and the scanning signal line 5 may be overlapped with each other in a vertical projection on the light-emitting surface of the display panel, and a via hole 22 may be disposed between the discharge protrusion 3 and the scanning signal line 5, and the two are electrically connected through the via hole 22.
Alternatively, referring still to fig. 4 and 9, in some embodiments, the channel length d1 between two discharge projections 3 facing each other may be set smaller than the channel length d2 of the thin film transistor 8.
Wherein, the channel length d1 between two discharge tabs 3 that are opposite to each other is the distance between two discharge tabs 3 of the same group of discharge tabs 3; the channel length d2 of the tft 8 is the distance between the first terminal 10 and the second terminal 11 of the same tft 8. As shown in fig. 4 and 9, in the present invention, the channel length d1 between two discharge projections 3 facing each other may be made smaller than the channel length d2 of the thin film transistor 8. In this arrangement, when there is electrostatic charge on the pixel electrode 2, the electrostatic charge is more easily released from the discharge protrusion 3 and does not pass through the thin film transistor 8, so as to ensure that the thin film transistor 8 is not damaged by electrostatic shock, thereby achieving the purpose of protecting the thin film transistor 8.
Optionally, fig. 14 is a schematic cross-sectional structure diagram of a display panel according to an embodiment of the present invention, as shown in fig. 14, the display panel may further include a common electrode 12, the common electrode 12 and the pixel electrode 2 are located on different film layers along a direction perpendicular to a light exit surface of the display panel, and vertical projections of the pixel electrode 2 and the common electrode 12 on the light exit surface of the display panel are at least partially overlapped; the common electrode 12 includes a hole digging region 13, and the vertical projection of the discharge protrusion 3 on the light emitting surface of the display panel is located in the vertical projection of the hole digging region 13 on the light emitting surface of the display panel.
Specifically, as shown in fig. 14, the display panel may further include a common electrode 12. The direction perpendicular to the light-emitting surface of the display panel is defined as a third direction Z, along which the common electrode 12 and the pixel electrode 2 are located on different film layers, and the vertical projections of the pixel electrode 2 and the common electrode 12 on the light-emitting surface of the display panel are at least partially overlapped. When the thin film transistor 8 is turned on, a data signal is transmitted to the pixel electrode 2, and the common electrode 12 receives a common potential signal to form a conductive path, thereby lighting the pixel.
It should be noted that, in the embodiment of the present invention, the hole digging region 13 may be disposed on the common electrode 12, and a vertical projection of the discharge protrusion 3 on the light emitting surface of the display panel is located in a vertical projection of the hole digging region 13 on the light emitting surface of the display panel, or it can be understood that a vertical projection of the discharge protrusion 3 on the film layer where the common electrode 12 is located in the hole digging region 13 of the common electrode 12. Therefore, when the electrostatic charges are discharged through the discharge protrusion 3, the electrostatic charges are discharged to the common electrode 12, and damage to the common electrode 12 is avoided.
Optionally, fig. 15 is a schematic cross-sectional structure diagram of another display panel provided in an embodiment of the present invention, and referring to fig. 15, along a direction perpendicular to a light emitting surface of the display panel, the display panel sequentially includes a substrate 14, a first conductive layer 15, a semiconductor layer 16, a first insulating layer 17, a second conductive layer 18, a third conductive layer 19, an insulating layer 20, and a fourth conductive layer 21; the scanning signal line 5 is located on the first conductive layer 15, the pixel electrode 2 is located on the second conductive layer 18, the data signal line 4 is located on the third conductive layer 19, and the common electrode 12 is located on the fourth conductive layer 21.
Specifically, as shown in fig. 15, the display panel includes a substrate 14, a first conductive layer 15, a semiconductor layer 16, a first insulating layer 17, a second conductive layer 18, a third conductive layer 19, an insulating layer 20, and a fourth conductive layer 21 in this order along the third direction Z.
Wherein the substrate base plate 14 may be flexible such that the display panel is stretchable, foldable, bendable or rollable, and the substrate base plate 14 may be formed of any suitable insulating material having flexibility. The substrate 14 may also be rigid, for example a glass substrate, to form a rigid display panel.
With continued reference to fig. 15, in the third direction Z, a first conductive layer 15 may be disposed on the substrate base plate 14, and the scanning signal lines 5 are formed in the first conductive layer 15. The surface of the first conductive layer 15 on the side away from the substrate 14 is provided with a semiconductor layer 16, and the semiconductor layer 16 may be a polysilicon active layer or an oxide semiconductor active layer. A surface of the semiconductor layer 16 on a side remote from the first conductive layer 15 is provided with a first insulating layer 17. A side surface of the first insulating layer 17 remote from the semiconductor layer 16 is provided with a second conductive layer 18, and the pixel electrode 2 is disposed in the second conductive layer 18. A third conductive layer 19 is arranged on the surface of one side, away from the first insulating layer 17, of the second conductive layer 18, and the data signal line 4 is positioned on the third conductive layer 19; correspondingly, discharge protrusions (not shown in the figures) may also be provided in the third electrically conductive layer 19. The side of the third conductive layer 19 far from the second conductive layer 18 is provided with an insulating layer 20, the surface of the side of the insulating layer 20 far from the third conductive layer 19 is provided with a fourth conductive layer 21, and the common electrode 12 can be located in the fourth conductive layer 21.
In the embodiments of the present invention, the materials for forming the first conductive layer 15, the semiconductor layer 16, the first insulating layer 17, the second conductive layer 18, the third conductive layer 19, the insulating layer 20, and the fourth conductive layer 21 are not limited, and those skilled in the art can set the materials according to actual requirements, which is not described herein.
Of course, the film layers for the scan signal lines 5, the pixel electrodes 2 and the data signal lines 4 are not limited thereto, and in the practical application process, a person skilled in the art can adjust the specific film layers for the pixel electrodes 2, the scan signal lines 5 and the data signal lines 4 according to practical requirements.
Optionally, fig. 16 is a schematic diagram of a partially enlarged structure of another display panel according to an embodiment of the present invention, as shown in fig. 16, in a possible embodiment, a connection portion 24 may be further disposed on the pixel electrode 2 and the signal line 1, and the pixel electrode 2 and the signal line 1 are electrically connected to the corresponding discharge protrusion 3 through the connection portion 24 respectively.
Specifically, referring to fig. 16, in the present embodiment, connection portions 24 may be respectively provided on the pixel electrode 2 and the signal line 1, and the pixel electrode 2 and the signal line 1 are electrically connected to the corresponding discharge protrusion 3 through the connection portions 24, respectively. Since the discharge protrusions 3 are small in size, the connection stability of the discharge protrusions 3 with the pixel electrodes 2 and the signal lines 1 can be improved by providing the connection portions 24.
The specific arrangement manner of the connection portion 24 is not limited in the embodiments of the present invention, and those skilled in the art can set the arrangement manner according to actual requirements. Illustratively, in one possible embodiment, the connection portion 24 has a trapezoid shape, an upper base of the trapezoid being connected to the discharge protrusion 3, and a lower base of the trapezoid being electrically connected to the pixel electrode 2 or the signal line 1.
Specifically, as shown in fig. 16, the connection portion 24 may have a trapezoidal shape, an upper base of the trapezoidal shape, that is, a relatively short base of the trapezoidal shape, being connected to the discharge protrusion portion 3, and a lower base of the trapezoidal shape, that is, a relatively long base of the trapezoidal shape, being connected to the pixel electrode 2 or the signal line 1. Under this kind of mode of setting, the shape of connecting portion 24 is comparatively matchd with the shape of discharge bulge 3, and the connection effect between discharge bulge 3 and the connecting portion 24 to between connecting portion 24 and the pixel electrode 2 is better, and the connecting line between the upper edge of connecting portion 24 and discharge bulge 3 is more smooth, is favorable to the release of static electric charge. Fig. 16 exemplarily shows that the discharge protrusion 3 has a square shape, but the actual situation is not limited thereto.
Of course, the shape of the connecting portion 24 may be adjusted according to the shape of the discharge protrusion 3, which is not illustrated here.
Based on the same inventive concept, the embodiment of the invention also provides a display device. Fig. 17 is a schematic structural diagram of a display device according to an embodiment of the present invention, and as shown in fig. 17, the display device includes the display panel 100 according to any embodiment of the present invention, so that the display device according to the embodiment of the present invention has the corresponding beneficial effects of the display panel 100 according to the embodiment of the present invention, and details thereof are not repeated herein. For example, the display device may be an electronic device such as a mobile phone, a computer, a smart wearable device (e.g., a smart watch), and an in-vehicle display device, which is not limited in this embodiment of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (12)
1. A display panel is characterized by comprising a plurality of signal lines, a plurality of pixel electrodes and at least one group of discharge bulges, wherein the same group of discharge bulges comprises two discharge bulges which are opposite to each other, the two discharge bulges are respectively and electrically connected with the adjacent pixel electrodes and the signal lines, and the vertical projections of the two discharge bulges on the light emitting surface of the display panel are not overlapped;
the signal lines include data signal lines extending in a first direction and arranged in a second direction, and scan signal lines extending in the second direction and arranged in the first direction; wherein the first direction intersects the second direction;
the discharge projection is located in an area surrounded by the two data signal lines and the two scanning signal lines adjacent to the pixel electrode.
2. The display panel according to claim 1, wherein a plurality of pixel electrodes arranged in order in the first direction constitute a plurality of pixel electrode columns;
along the second direction, the data signal lines and the pixel electrode columns are sequentially and alternately arranged, and a plurality of pixel electrodes in the same pixel electrode column are electrically connected with the same data signal line through thin film transistors respectively;
the two discharge protrusions of the same group are electrically connected to the pixel electrodes and the data signal lines adjacent in the second direction, respectively.
3. The display panel according to claim 2, wherein two of the discharge protrusions of a same group are electrically connected to the pixel electrode and a first data signal line, respectively, and/or wherein two of the discharge protrusions of a same group are electrically connected to the pixel electrode and a second data signal line, respectively;
the first data signal line is connected with the current pixel electrode through a thin film transistor; the second data signal line is located on one side of the pixel electrode far away from the first data signal line along the second direction.
4. The display panel according to claim 1, wherein a plurality of pixel electrodes arranged in sequence in the second direction constitute a plurality of pixel electrode rows;
the scanning signal lines and the pixel electrode rows are sequentially and alternately arranged along the first direction, the pixel electrodes are electrically connected with the data signal lines through thin film transistors, and the control ends of the thin film transistors correspondingly connected with the pixel electrodes in the same pixel electrode row are electrically connected with the same scanning signal line;
the two discharge projections of the same group are electrically connected to the pixel electrodes and the scanning signal lines adjacent in the first direction, respectively.
5. The display panel according to claim 4, wherein two of the discharge protrusions of a same group are electrically connected to the pixel electrode and a first scanning signal line, respectively, and/or wherein two of the discharge protrusions of a same group are electrically connected to the pixel electrode and a second scanning signal line, respectively;
the first scanning signal line is connected with the current pixel electrode through a control end of a thin film transistor; the second scanning signal line is positioned on one side of the pixel electrode far away from the first scanning signal line in the first direction.
6. The display panel according to claim 5, wherein the scan signal lines and the discharge protrusions are located on different layers in a direction perpendicular to a light exit surface of the display panel, and the discharge protrusions are electrically connected to the scan signal lines through vias.
7. The display panel according to claim 2 or 4, wherein a channel length between two of the discharge projections opposed to each other is smaller than a channel length of the thin film transistor.
8. The display panel according to claim 1, wherein the display panel further comprises a common electrode, the common electrode and the pixel electrode are located on different film layers in a direction perpendicular to a light emitting surface of the display panel, and vertical projections of the pixel electrode and the common electrode on the light emitting surface of the display panel at least partially overlap;
the public electrode comprises a hole digging area, and the vertical projection of the discharge protruding part on the light-emitting surface of the display panel is positioned in the vertical projection of the hole digging area on the light-emitting surface of the display panel.
9. The display panel according to claim 8, wherein the display panel comprises a substrate, a first conductive layer, a semiconductor layer, a first insulating layer, a second conductive layer, a third conductive layer, an insulating layer, and a fourth conductive layer in this order along a direction perpendicular to a light emitting surface of the display panel;
the scanning signal line is located on the first conducting layer, the pixel electrode is located on the second conducting layer, the data signal line is located on the third conducting layer, and the common electrode is located on the fourth conducting layer.
10. The display panel according to claim 1, wherein the pixel electrode and the signal line are further provided with a connecting portion, and the pixel electrode and the signal line are electrically connected to the corresponding discharge protrusion portion through the connecting portion, respectively.
11. The display panel according to claim 10, wherein the connecting portion has a trapezoid shape, an upper base of the trapezoid is connected to the discharge protrusion, and a lower base of the trapezoid is electrically connected to the pixel electrode or the signal line.
12. A display device characterized by comprising the display panel according to any one of claims 1 to 11.
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