Display panel and display device

Abstract

This invention provides a display panel and a display device, relating to the field of display technology, for improving display defects in display panels. The display panel includes a substrate, which includes a first substrate and a second substrate. A first electrode is disposed between the first substrate and the second substrate, and a second electrode is disposed on the side of the second substrate away from the first substrate. At least a portion of the first electrode and at least a portion of the second electrode receive different voltages.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more particularly to a display panel and display device. Background Technology

[0002] Most existing display panels use flexible substrates, such as polyimide (PI) substrates. However, these substrates often contain ions or charges that can cause threshold voltage drift in the transistors of the array layer, thereby worsening image retention and causing abnormal image display. Summary of the Invention

[0003] This invention provides a display panel and a display device to improve the display failure problem of the display panel.

[0004] In a first aspect, embodiments of the present invention provide a display panel including a substrate, the substrate including a first substrate and a second substrate, a first electrode being disposed between the first substrate and the second substrate, and a second electrode being disposed on the side of the second substrate away from the first substrate, wherein at least a portion of the first electrode and at least a portion of the second electrode receive different voltages.

[0005] Secondly, based on the same inventive concept, embodiments of the present invention also provide a display device, including the aforementioned display panel.

[0006] The technical solution provided by the embodiments of the present invention has the following beneficial effects:

[0007] This invention improves the structure of the panel substrate by setting electrodes on both sides of the substrate near the array layer. The electric field generated by these electrodes can suppress ions and charges in the substrate from approaching the array layer. Specifically, the substrate includes a first substrate and a second substrate, with the second substrate being closer to the array layer. This invention sets a first electrode and a second electrode on both sides of the second substrate, and applies different voltages to at least a portion of the first electrode and at least a portion of the second electrode. This creates a longitudinal electric field in a specific direction between these first and second electrodes, suppressing ions and charges in the second substrate from approaching its upper surface. This prevents the accumulation of ions and charges on the upper surface of the second substrate, weakens the impact of ions and charges on transistor performance, prevents transistor threshold drift, effectively improves image retention, and effectively enhances the anti-static capability of the display panel. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 This is a schematic diagram of a display panel provided in an embodiment of the present invention;

[0010] Figure 2 This is a schematic diagram of another structure of the display panel provided in an embodiment of the present invention;

[0011] Figure 3 This is a schematic diagram of another structure of the display panel provided in an embodiment of the present invention;

[0012] Figure 4 A schematic diagram of the electric field direction provided in an embodiment of the present invention;

[0013] Figure 5 This is a schematic diagram of another structure of the display panel provided in an embodiment of the present invention;

[0014] Figure 6 This is a schematic diagram of another structure of the display panel provided in an embodiment of the present invention;

[0015] Figure 7 This is another schematic diagram of the electric field direction provided in an embodiment of the present invention;

[0016] Figure 8 This is another schematic diagram of the electric field direction provided in an embodiment of the present invention;

[0017] Figure 9 This is another schematic diagram of the electric field direction provided in an embodiment of the present invention;

[0018] Figure 10 This is another schematic diagram of the electric field direction provided in an embodiment of the present invention;

[0019] Figure 11 This is a schematic diagram of another structure of the display panel provided in an embodiment of the present invention;

[0020] Figure 12 This is a schematic diagram of a display device provided in an embodiment of the present invention. Detailed Implementation

[0021] To better understand the technical solution of the present invention, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] It should be understood that the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” as used in the embodiments of this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0024] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0025] This invention provides a display panel, such as... Figure 1 As shown, Figure 1 This is a schematic diagram of a display panel provided in an embodiment of the present invention. The display panel includes a substrate 1. The substrate 1 includes a first substrate 3 and a second substrate 4. Both the first substrate 3 and the second substrate 4 can be flexible substrates, such as PI substrates. A first electrode 5 is disposed between the first substrate 3 and the second substrate 4, and a second electrode 6 is disposed on the side of the second substrate 4 away from the first substrate 3. At least a portion of the first electrode 5 and at least a portion of the second electrode 6 receive different voltages.

[0026] The display panel also includes an array layer 2 located on one side of the substrate 1, and the array layer 2 includes transistors 7.

[0027] Typically, substrates contain some ions or charges. For example, during substrate fabrication, elements may be introduced into the substrate material to optimize substrate properties, resulting in the presence of corresponding ions in the substrate. Alternatively, external static charges can enter the display panel. For instance, static charges generated by triboelectric charging on the upper surface of the display panel can flow into the substrate through the sides of the display panel and accumulate there.

[0028] When these ions and charges accumulate in large quantities on the side of the substrate near the array layer, they can affect the threshold voltage of the transistor, causing a threshold shift, which in turn affects the device characteristics of the transistor and leads to display defects.

[0029] In related technologies, the ion content in the substrate is generally reduced by increasing the substrate curing time, and conductive copper foil is added to the back of the display panel to transfer static charges from the side of the panel to the back of the panel, where they are then conducted away via the conductive copper foil. However, the improvement effects of the above methods are not significant. Moreover, increasing the curing time of the display panel will lengthen the production cycle of the display panel, leading to increased manufacturing costs.

[0030] To address this, this invention improves the structure of the panel substrate. By setting electrodes on both sides of the substrate near the array layer, the electric field generated by the electrodes can be used to suppress ions and charges in the substrate from approaching the array layer. Specifically, the substrate 1 includes a first substrate 3 and a second substrate 4, with the second substrate 4 being closer to the array layer 2. In this invention, a first electrode 5 and a second electrode 6 are respectively set on both sides of the second substrate 4, and different voltages are applied to at least a portion of the first electrode 5 and at least a portion of the second electrode 6. This allows a longitudinal electric field in a specific direction to be formed between these portions of the first electrode 5 and the second electrode 6, suppressing ions and charges in the second substrate 4 from approaching the upper surface of the second substrate 4 (the upper surface of the second substrate 4 is the surface of the second substrate 4 closer to the array layer 2). This prevents the accumulation of ions and charges on the upper surface of the second substrate 4, weakens the impact of ions and charges on the performance of the transistor 7, prevents threshold drift of the transistor 7, effectively improves image retention, and effectively enhances the antistatic capability of the display panel.

[0031] For example, the voltage received by the first electrode 5 is greater than the voltage received by the second electrode 6. An electric field pointing towards the array layer 2 is formed between the first electrode 5 and the second electrode 6. Under the action of this electric field, the anions and negative charges in the second substrate 4 will move towards the lower surface of the second substrate 4 (the lower surface of the second substrate 4 is the surface of the second substrate 4 near the first substrate 3) and thus away from the upper surface of the second substrate 4.

[0032] In this embodiment of the invention, the materials of the first electrode 5 and the second electrode 6 may include molybdenum (Mo), molybdenum-niobium alloy (MoNb), indium tin oxide (ITO), and silver (Ag), etc.

[0033] In one feasible implementation, see again Figure 1 A first barrier layer 8 is provided between the first electrode 5 and the first substrate 3, and a second barrier layer 9 is provided between the second electrode 6 and the second substrate 4.

[0034] Compared to the substrate material, the barrier layer material has surface properties more suitable for metal electrode adhesion. Therefore, placing a barrier layer between the electrode and the substrate can enhance electrode adhesion and improve its reliability. Furthermore, as a buffer layer, the barrier layer can adjust the physical property differences between the electrode and the substrate, reducing interfacial stress and thus improving the stability of the metal electrode. In addition, the barrier layer also serves as a barrier and protector, preventing gases or impurities from diffusing into the electrode and protecting it from contamination and corrosion.

[0035] In one feasible implementation, such as Figure 2 As shown, Figure 2 This is another structural schematic diagram of the display panel provided in an embodiment of the present invention. The substrate 1 includes a plurality of first electrodes 5 arranged along a first direction x and a plurality of second electrodes 6 arranged along the first direction x. In a direction perpendicular to the plane where the first substrate 3 is located, the first electrodes 5 and the second electrodes 6 overlap.

[0036] The first electrode 5 and the second electrode 6 are arranged in a regular, co-directional manner, which helps to design a larger overlap area between them, thereby increasing the electric field strength they can generate. This enhances the electric field's ability to influence ions and charges, and further reduces the accumulation of ions or charges on the upper surface of the second substrate 4. In one structure, the projections of the first electrode 5 and the second electrode 6 coincide in a direction perpendicular to the plane of the first substrate 3, maximizing their overlap area.

[0037] In one feasible implementation, such as Figure 3 As shown, Figure 3 This is a schematic diagram of another structure of the display panel provided in an embodiment of the present invention. The first electrode 5 includes a first sub-part 10 and a plurality of second sub-parts 11. The first sub-part 10 extends along a second direction y, and the second sub-parts 11 protrude from the first sub-part 10 along a first direction x. The second direction y intersects with the first direction x. The second electrode 6 includes a third sub-part 12 and a plurality of fourth sub-parts 13. The third sub-part 12 extends along the second direction y, and the fourth sub-parts 13 protrude from the third sub-part 12 along the first direction x.

[0038] Taking the first electrode 5 as an example, the first sub-part 10 of the first electrode 5 extends in a linear shape and can be used as a signal line to facilitate the reception of signals and then transmit the signals to each second sub-part 11. The second sub-part 11 has a larger area to increase the overlap area with the second electrode 6, so as to form a larger electric field.

[0039] In one structure, see Figure 3The first sub-part 10 has a second sub-part 11 on each side, and the third sub-part 12 has a fourth sub-part 13 on each side. The second sub-part 11 includes a first main body 14 and a first connecting part 15, and the first main body 14 is connected to the first sub-part 10 through the first connecting part 15; the fourth sub-part 13 includes a second main body 16 and a second connecting part 17, and the second main body 16 is connected to the third sub-part 12 through the second connecting part 17.

[0040] In this structure, the first electrode 5 and the second electrode 6 are partially dumbbell-shaped. The shapes of the first main body 14 and the second main body 16 are not limited; they can be square, rhomboid, circular, etc.

[0041] In this embodiment of the invention, to improve the solubility and transmittance of the substrate material, and to reduce its hygroscopicity and dielectric constant, fluorine can be doped into the substrate material during its fabrication process. After fluorine doping, fluoride ions (F₂) will be present in the substrate. - ).

[0042] Therefore, in one feasible implementation, the voltage received by the first electrode 5 can be greater than the voltage received by the second electrode 6. For example, the first electrode 5 receives voltage v11, and the second electrode 6 receives voltage v12, where v11 > v12. Exemplarily, v11 = 0V and v12 = -3.3V, or v11 = 3.3V and v12 = 0V.

[0043] In this structure, combined Figure 4 , Figure 4 This is a schematic diagram of the electric field direction provided in an embodiment of the present invention. The first electrode 5 and the second electrode 6 will form an electric field pointing in the direction of the array layer 2. Under the action of the electric field, fluoride ions and static charges will move away from the upper surface of the second substrate 4, thereby reducing the influence of fluoride ions and static charges in the second substrate 4 on the transistor 7.

[0044] In one feasible implementation, such as Figure 5 and Figure 6 As shown, Figure 5 This is a schematic diagram of another structure of the display panel provided in an embodiment of the present invention. Figure 6 This is a schematic diagram of another structure of the display panel provided in an embodiment of the present invention. The substrate 1 further includes at least two third electrodes 18. The third electrodes 18 are located at least within the second substrate 4. The arrangement direction of the third electrodes 18 is parallel to the plane of the second substrate 4. At least some of the third electrodes 18 receive different voltages.

[0045] The third electrode 18 can also be used to form a horizontal electric field, which can repel static charges entering from the side of the display panel and prevent the static charges from flowing further into the display panel.

[0046] In one feasible implementation, see Figure 5 The substrate 1 includes a first region 19 and a second region 20, with the second region 20 located on the side of the first region 19 near the outer edge of the display panel.

[0047] The first electrode 5 and the second electrode 6 are located in the first region 19. At least a portion of the third electrode 18 is located in the second region 20, and for two adjacent third electrodes 18 in the second region 20, the third electrode 18 that is closer to the outer edge of the substrate 1 receives a greater voltage than the other third electrode 18.

[0048] Taking the second region 20, which includes the third electrode 18-1 and the third electrode 18-2, as an example, the third electrode 18-1 is located on the side of the third electrode 18-2 closer to the outer edge of the display panel. The third electrode 18-1 receives a larger voltage; for example, the third electrode 18-1 receives a voltage v21, and the third electrode 18-2 receives a voltage v22, where v21 > v22. The electric field formed between the third electrode 18-1 and the third electrode 18-2 is directed towards the first region 19, thereby repelling static charges entering from the side of the display panel to a position away from the first region 19, preventing static charges from flowing further into the interior of the display panel.

[0049] Furthermore, the voltage received by the first electrode 5 is greater than the voltage received by the second electrode 6. Specifically, the voltage difference between two adjacent third electrodes 18 in the second region 20 is greater than the voltage difference between the first electrode 5 and the third electrode 18, thereby creating a stronger electric field between the third electrodes 18, which further suppresses static charge from entering the display panel and prevents static charge from accumulating on the upper surface of the second substrate 4.

[0050] In one feasible implementation, see Figure 6 The substrate 1 includes a plurality of first electrode groups 21, each first electrode group 21 including a first electrode 5 and a second electrode 6. In a direction perpendicular to the plane of the first substrate 3, the first electrode 5 and the second electrode 6 in the first electrode group 21 overlap.

[0051] In a direction perpendicular to the plane of the first substrate 3, at least some of the projections of adjacent third electrodes 18 are spaced apart by the projection of a first electrode group 21. For example, a first electrode group 21 may include a first electrode 5 and a second electrode 6. A first electrode group 21 is spaced apart between two adjacent third electrodes 18.

[0052] Combination Figure 7 , Figure 7This is another schematic diagram of the electric field direction provided in an embodiment of the present invention. The third electrode 18 and the first electrode group 21 are arranged alternately. A longitudinal electric field E1 is formed between the first electrode 5 and the second electrode 6 in the first electrode group 21, and a transverse electric field E2 is formed between the third electrodes 18. The first electrode 5, the second electrode 6 and the third electrode 18 constitute a cubic "electric field cage". The electric field cage can be used to confine ions and charges. The entering static charges are concentrated in the electric field in different directions and repelled to a position away from the upper surface of the second substrate, further suppressing the accumulation of ions and charges on the upper surface of the second substrate 4.

[0053] In one feasible implementation, combined with Figure 6 , Figure 8 and Figure 9 , Figure 8 This is another schematic diagram of the electric field direction provided in an embodiment of the present invention. Figure 9 This is another schematic diagram of the electric field direction provided in an embodiment of the present invention. The substrate 1 includes a first edge 22 and a second edge 23 opposite to each other in the first direction x. The substrate 1 includes a third region 24 and a fourth region 25 arranged along the first direction x. The third region 24 is located on the side of the fourth region 25 close to the first edge 22. The third region 24 and the fourth region 25 respectively include a third electrode 18.

[0054] For at least partially adjacent third electrodes 18 in the third region 24, the third electrode 18 closer to the first edge 22 receives a greater voltage than the other third electrode 18. For at least partially adjacent third electrodes 18 in the fourth region 25, the third electrode 18 closer to the second edge 23 receives a greater voltage than the other third electrode 18.

[0055] For the third region 24, based on the voltage design of the third electrode 18 in the third region 24, an electric field pointing towards the fourth region 25 will be formed between at least some of the adjacent third electrodes 18. At this time, the static charge entering from the first edge 22 will be repelled by the electric field in this direction and tend to flow towards the first edge 22, so that it will not penetrate further inward.

[0056] For the fourth region 25, based on the voltage design of the third electrode 18 in the fourth region 25, an electric field pointing towards the third region 24 will be formed between at least some of the adjacent third electrodes 18. At this time, the static charge entering from the second edge 23 will be repelled by the electric field in this direction and tend to flow towards the second edge 23, so that it will not penetrate further inward.

[0057] Furthermore, combined Figure 6 and Figure 8 One of the two adjacent third electrodes 18 receives a first voltage, and the other receives a second voltage. The first voltage and the second voltage are different.

[0058] For example, see Figure 8 One of the two adjacent third electrodes 18 receives the first voltage v21, and the other receives the second voltage v22, where v21 > v21.

[0059] In this configuration, static charges entering from the first edge 22 will be partially repelled by an electric field pointing towards the fourth region 25 in the third region 24, hindering further inflow of static charges. Similarly, static charges entering from the second edge 23 will be partially repelled by an electric field pointing towards the third region 24 in the fourth region 25, also hindering further inflow of static charges. Furthermore, the voltage design of this third electrode 18 is relatively simple, requiring only two voltages to be designed for it, thus reducing design complexity.

[0060] Or, combine Figure 6 and Figure 9 For the third electrode 18 in the third region 24, the voltage received by the third electrode 18 decreases along the direction from the first edge 22 to the second edge 23. For the third electrode 18 in the fourth region 25, the voltage received by the third electrode 18 decreases along the direction from the second edge 23 to the first edge 22.

[0061] For example, see Figure 9 In the third region 24, along the direction away from the first edge 22, the voltages received by the third electrode 18 are v1, v2, v3, and v4 in sequence, v1 > v2 > v3 > v4. In the fourth region 25, along the direction away from the second edge 23, the voltages received by the third electrode 18 are v8, v7, v6, and v5 in sequence, v8 > v7 > v6 > v5.

[0062] In this configuration, the electric field direction formed by two adjacent third electrodes 18 in the third region 24 is directed towards the fourth region 25. Therefore, static charges entering from the side of the first edge 22 will be more repelled in the third region 24 and will have difficulty flowing inward. Similarly, the electric field direction formed by two adjacent third electrodes 18 in the fourth region 25 is directed towards the third region 24. Therefore, static charges entering from the side of the second edge 23 will be more repelled in the fourth region 25 and will have difficulty flowing inward.

[0063] In one feasible implementation, combined with Figure 6 and Figure 10 , Figure 10 This is another schematic diagram of the electric field direction provided in an embodiment of the present invention. In some first electrode groups 21, the voltage received by the first electrode 5 is greater than the voltage received by the second electrode 6, and in some first electrode groups 21, the voltage received by the first electrode 5 is less than the voltage received by the second electrode 6.

[0064] Under this design, fluoride ions and static charges in the second substrate 4 can still move away from the array layer 2 under the influence of the electric field formed by part of the first electrode group 21, thereby reducing the fluoride ions and static charges accumulated on the surface of the second substrate 4 to a certain extent.

[0065] Furthermore, to simplify the voltage design of the first electrode 5 and the second electrode 6, for two adjacent first electrode groups 21, the first electrode 5 in one first electrode group 21 receives a third voltage and the second electrode 6 receives a fourth voltage, and the first electrode 5 in the other first electrode group 21 receives a fourth voltage and the second electrode 6 receives a third voltage, wherein the third voltage and the fourth voltage are different.

[0066] For example, in two adjacent first electrode groups 21, the first electrode 5 in one first electrode group 21 receives voltage v11 and the second electrode 6 receives voltage v12, while the first electrode 5 in the other first electrode group 21 receives voltage v21 and the second electrode 6 receives voltage v22, where v11 > v12.

[0067] In one implementation, see Figure 10 The direction of the electric field formed by the third electrode can follow the rule of alternating left and right, while the direction of the electric field formed by the first electrode group can follow the rule of alternating up and down.

[0068] In one feasible implementation, see again Figure 6 The third electrode 18 penetrates the second substrate 4 and protrudes from the second substrate 4 in a direction perpendicular to the plane of the second substrate 4. At this time, one end of the third electrode 18 can be located between adjacent first electrodes 5, and the other end can be located between adjacent second electrodes 6. Along the first direction x, the third electrode 18 overlaps with the first electrode 5 and the second electrode 6, so that a more stable electric field cage can be formed between the first electrode 5, the second electrode 6 and the third electrode 18.

[0069] In one feasible implementation, such as Figure 11 As shown, Figure 11 This is another schematic diagram of a display panel provided in an embodiment of the present invention. In a direction perpendicular to the plane of the second substrate 4, at least a portion of the second electrode 6 overlaps with the channel of the active layer in the transistor 7. In this case, this portion of the second electrode 6 can also act as a shielding metal to prevent ambient light from illuminating the channel of the transistor 7 and affecting the carrier concentration in the channel. In other words, no additional shielding metal is needed in the display panel, which helps to simplify the panel structure.

[0070] Based on the same inventive concept, embodiments of the present invention also provide a display device, such as... Figure 12 As shown, Figure 12This is a schematic diagram of a display device provided in an embodiment of the present invention, the display device including the aforementioned display panel 100. Of course, Figure 12 The display device shown is for illustrative purposes only. The display device can be any electronic device with display function, such as a mobile phone, tablet computer, laptop computer, e-reader or television.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display panel, characterized in that, The device includes a substrate, which includes a first substrate and a second substrate. A first electrode is disposed between the first substrate and the second substrate, and a second electrode is disposed on the side of the second substrate away from the first substrate. The voltage received by at least a portion of the first electrode and at least a portion of the second electrode are different. The display panel further includes an array layer located on one side of the substrate, the array layer including transistors, and the second electrode located between the array layer and the second substrate; The substrate includes a plurality of first electrodes arranged along a first direction and a plurality of second electrodes arranged along the first direction, wherein the first electrodes and the second electrodes overlap in a direction perpendicular to the plane of the first substrate; the first electrode includes a first sub-part and a plurality of second sub-parts, the first sub-parts extending along a second direction, and the second sub-parts protruding from the first sub-parts along the first direction, the second direction intersecting the first direction; the second electrode includes a third sub-part and a plurality of fourth sub-parts, the third sub-parts extending along the second direction, and the fourth sub-parts protruding from the third sub-parts along the first direction; And / or, the voltage received by the first electrode is greater than the voltage received by the second electrode; And / or, the substrate further includes at least two third electrodes, the third electrodes being located at least within the second substrate, the third electrodes being arranged parallel to the plane of the second substrate, wherein at least some of the third electrodes receive different voltages.

2. The display panel according to claim 1, characterized in that, A first barrier layer is disposed between the first electrode and the first substrate, and a second barrier layer is disposed between the second electrode and the second substrate.

3. The display panel according to claim 1, characterized in that, The substrate includes a first region and a second region, wherein the second region is located on the side of the first region near the outer edge of the display panel; The first electrode and the second electrode are located in the first region; at least part of the third electrode is located in the second region, and for two adjacent third electrodes in the second region, the third electrode closer to the outer edge of the substrate receives a greater voltage than the other third electrode receives.

4. The display panel according to claim 3, characterized in that, The voltage received by the first electrode is greater than the voltage received by the second electrode; In the second region, the pressure difference between two adjacent third electrodes is greater than the pressure difference between the first electrode and the third electrode.

5. The display panel according to claim 1, characterized in that, The substrate includes a plurality of first electrode groups, each first electrode group including a first electrode and a second electrode, wherein the first electrode and the second electrode in the first electrode group overlap in a direction perpendicular to the plane of the first substrate. In a direction perpendicular to the plane of the first substrate, at least some of the projections of the third electrode are spaced apart by the projections of the first electrode group.

6. The display panel according to claim 5, characterized in that, The substrate includes a first edge and a second edge opposite each other in a first direction. The substrate includes a third region and a fourth region arranged along the first direction. The third region is located on the side of the fourth region closer to the first edge. The third region and the fourth region respectively include the third electrode. For at least partially adjacent third electrodes in the third region, the third electrode that is closer to the first edge receives a greater voltage than the other third electrode. For at least partially adjacent third electrodes in the fourth region, the third electrode closer to the second edge receives a greater voltage than the other third electrode.

7. The display panel according to claim 6, characterized in that, One of the two adjacent third electrodes receives a first voltage, and the other receives a second voltage, wherein the first voltage is different from the second voltage.

8. The display panel according to claim 6, characterized in that, For the third electrode in the third region, the voltage received by the third electrode decreases along the direction from the first edge to the second edge; For the third electrode in the fourth region, the voltage received by the third electrode decreases along the direction from the second edge to the first edge.

9. The display panel according to claim 5, characterized in that, In some of the first electrode groups, the voltage received by the first electrode is greater than the voltage received by the second electrode; in other parts of the first electrode group, the voltage received by the first electrode is less than the voltage received by the second electrode.

10. The display panel according to claim 9, characterized in that, For two adjacent first electrode groups, in one first electrode group the first electrode receives a third voltage and the second electrode receives a fourth voltage, and in the other first electrode group the first electrode receives the fourth voltage and the second electrode receives the third voltage, wherein the third voltage is different from the fourth voltage.

11. The display panel according to claim 1, characterized in that, The third electrode penetrates the second substrate and protrudes from the second substrate in a direction perpendicular to the plane of the second substrate.

12. The display panel according to claim 1, characterized in that, In a direction perpendicular to the plane of the second substrate, at least a portion of the second electrode overlaps with the channel of the active layer in the transistor.

13. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 12.

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