Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device, relates to the technical field of display, and aims to solve the problem of poor display of the display panel. The display panel comprises a base, the base comprises a first substrate and a second substrate, a first electrode is arranged between the first substrate and the second substrate, a second electrode is arranged on the side, away from the first substrate, of the second substrate, and at least part of the first electrode and at least part of the second electrode receive different voltages.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] The substrates of existing display panels are mostly flexible substrates, such as polyimide (PI) substrates. However, such substrates usually contain some ions or charges, which can cause the threshold voltage of transistors in the array layer to drift, thereby worsening the afterimage and causing abnormal display of the picture. Summary of the invention

[0003] Embodiments of the present invention provide a display panel and a display device, which are used to improve the display defect problem of the display panel.

[0004] In a first aspect, an embodiment of the present invention provides a display panel, comprising a substrate, wherein the substrate comprises a first substrate and a second substrate, a first electrode is arranged between the first substrate and the second substrate, and a second electrode is arranged on a side of the second substrate away from the first substrate, wherein at least part of the first electrode and at least part of the second electrode receive different voltages.

[0005] In a second aspect, based on the same inventive concept, an embodiment of the present invention further provides a display device, comprising the above-mentioned display panel.

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

[0007] The embodiment of the present invention improves the structure of the panel substrate. By respectively arranging electrodes on both sides of the substrate close to the array layer, the electric field generated by the electrodes on both sides can be used to suppress the ions and charges in the substrate from approaching the array layer. Specifically, the substrate includes a first substrate and a second substrate, and the second substrate is a substrate closer to the array layer. In the embodiment of the present invention, a first electrode and a second electrode are respectively arranged on both sides of the second substrate, and different voltages are applied to at least part of the first electrode and at least part of the second electrode, so that a longitudinal electric field in a specific direction can be formed between the first electrode and the second electrode, suppressing the ions and charges in the second substrate from approaching the upper surface of the second substrate, thereby avoiding the accumulation of ions and charges on the upper surface of the second substrate, weakening the influence of ions and charges on transistor performance, preventing transistor threshold drift, effectively improving afterimages, and effectively improving the antistatic ability of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 paying any creative labor.

[0009] Figure 1 A schematic diagram of the structure of a display panel provided by an embodiment of the present invention;

[0010] Figure 2 Another schematic diagram of the structure of a display panel provided by an embodiment of the present invention;

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

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

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

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

[0015] Figure 7 Another schematic diagram of the electric field direction provided by an embodiment of the present invention;

[0016] Figure 8 Another schematic diagram of the electric field direction provided by an embodiment of the present invention;

[0017] Fig. 9 Another schematic diagram of the electric field direction provided by an embodiment of the present invention;

[0018] Fig.10 Another schematic diagram of the electric field direction provided by an embodiment of the present invention;

[0019] Fig.11 A schematic diagram of another structure of a display panel provided by an embodiment of the present invention;

[0020] Fig.12 A schematic diagram of the structure of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0021] In order to better understand the technical solution of the present invention, the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0022] It should be clear that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0024] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0025] An embodiment of the present invention provides a display panel, such as Figure 1 As shown, Figure 1 A schematic diagram of the structure 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, and the first substrate 3 and the second substrate 4 can both be flexible substrates, for example, PI substrates. A first electrode 5 is arranged between the first substrate 3 and the second substrate 4, and a second electrode 6 is arranged on a side of the second substrate 4 away from the first substrate 3, wherein at least part of the first electrode 5 and at least part of the second electrode 6 receive different voltages.

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

[0027] Usually, there are some ions or charges in the substrate. For example, during the preparation of the substrate, some elements may be introduced into the substrate material to optimize the substrate properties. After the elements are introduced, corresponding ions will exist in the substrate. Alternatively, static charges from the outside may enter the display panel. For example, static charges generated by friction on the upper surface of the display panel may flow into the substrate through the side of the display panel and accumulate in the substrate.

[0028] When these ions and charges accumulate in large quantities on the side of the substrate close to the array layer, they will affect the threshold voltage of the transistor, causing threshold shift, which in turn affects the device characteristics of the transistor and causes poor display problems.

[0029] In the related art, the ion content in the substrate is generally reduced by increasing the substrate curing time, and a conductive copper foil is added to the back of the display panel to transfer the static charge transmitted from the side of the panel to the back of the panel and then conduct it away through the conductive copper foil. However, the improvement effect of the above methods is not significant, and increasing the curing time of the display panel will also lengthen the production cycle of the display panel, resulting in increased production costs.

[0030] In this regard, the embodiment of the present invention improves the structure of the panel substrate, and by respectively arranging electrodes on both sides of the substrate close to the array layer, the electric field generated by the electrodes on both sides can be used to suppress the 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, and the second substrate 4 is a substrate closer to the array layer 2. In the embodiment of the present invention, a first electrode 5 and a second electrode 6 are respectively arranged on both sides of the second substrate 4, and different voltages are applied to at least part of the first electrode 5 and at least part of the second electrode 6, so that a longitudinal electric field in a specific direction can be formed between the first electrode 5 and the second electrode 6, suppressing the 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 close to the array layer 2), thereby avoiding the accumulation of ions and charges at the upper surface of the second substrate 4, weakening the influence of ions and charges on the performance of the transistor 7, preventing the threshold drift of the transistor 7, effectively improving the afterimage, and effectively improving the antistatic ability of the display panel.

[0031] Exemplarily, the voltage received by the first electrode 5 is greater than the voltage received by the second electrode 6, and an electric field pointing in the direction of 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 toward the lower surface of the second substrate 4 (the lower surface of the second substrate 4 is the surface of the second substrate 4 close to the first substrate 3), and then away from the upper surface of the second substrate 4.

[0032] In the embodiment of the present 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), silver (Ag), and the like.

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

[0034] Compared with the substrate material, the material of the barrier layer has surface properties that are more suitable for the attachment of metal electrodes. Therefore, a barrier layer is placed between the electrode and the substrate to enhance the adhesion of the electrode and improve its reliability. Moreover, as a buffer layer, the barrier layer can also adjust the difference in physical properties between the electrode and the substrate, reduce the interface stress, and thus improve the stability of the metal electrode. In addition, the barrier layer can also play a barrier and protective role, preventing gas or impurities from diffusing into the electrode and protecting the electrode from contamination and erosion.

[0035] In a possible implementation, Figure 2 As shown, Figure 2 Another structural schematic diagram of a 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, and the first electrodes 5 overlap with the second electrodes 6 in a direction perpendicular to the plane where the first substrate 3 is located.

[0036] The first electrode 5 and the second electrode 6 are arranged regularly in the same direction, which helps to design a larger overlapping area between the first electrode 5 and the second electrode 6, thereby making the electric field strength formed by the two electrodes greater, increasing the ability of the electric field to act on ions and charges, and greatly reducing the ions or charges accumulated on the surface of the second substrate 4. In one structure, in a direction perpendicular to the plane where the first substrate 3 is located, the projection of the first electrode 5 and the projection of the second electrode 6 overlap, so that the overlapping area between the two electrodes is maximized.

[0037] In a possible implementation, Figure 3 As shown, Figure 3 This is another structural schematic diagram of a display panel provided by an embodiment of the present invention, wherein the first electrode 5 includes a first sub-portion 10 and a plurality of second sub-portions 11, wherein the first sub-portion 10 extends along the second direction y, and the second sub-portion 11 protrudes from the first sub-portion 10 along the first direction x, and the second direction y intersects the first direction x. The second electrode 6 includes a third sub-portion 12 and a plurality of fourth sub-portions 13, wherein the third sub-portion 12 extends along the second direction y, and the fourth sub-portion 13 protrudes from the third sub-portion 12 along the first direction x.

[0038] Taking the first electrode 5 as an example, in the first electrode 5, the first sub-portion 10 extends linearly and can be used as a signal line to receive signals and then transmit the signals to each second sub-portion 11. The second sub-portion 11 has a larger area and is used to increase the overlapping area with the second electrode 6 to form a larger electric field.

[0039] In one structure, see Figure 3The second sub-section 11 is disposed on both sides of the first sub-section 10, and the fourth sub-section 13 is disposed on both sides of the third sub-section 12. The second sub-section 11 includes a first main body 14 and a first connecting portion 15, and the first main body 14 is connected to the first sub-section 10 through the first connecting portion 15; the fourth sub-section 13 includes a second main body 16 and a second connecting portion 17, and the second main body 16 is connected to the third sub-section 12 through the second connecting portion 17.

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

[0041] In the embodiment of the present invention, in order to improve the solubility and transmittance of the substrate material and reduce its moisture absorption rate and dielectric constant, fluorine element may be doped into the substrate material during the preparation process of the substrate. After doping with fluorine element, fluorine ions (F - ).

[0042] To this end, in a 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 a voltage v11, and the second electrode 6 receives a voltage v12, v11>v12, illustratively, v11=0V, v12=-3.3V, or v11=3.3V, v12=0V.

[0043] In this structure, combined with Figure 4 , Figure 4 A schematic diagram of the direction of the electric field 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, fluorine ions and static charges will move away from the upper surface of the second substrate 4, thereby reducing the influence of fluorine ions and static charges in the second substrate 4 on the transistor 7.

[0044] In a possible implementation, Figure 5 and Figure 6 As shown, Figure 5 This is another structural schematic diagram of a display panel provided by an embodiment of the present invention. Figure 6 Another structural schematic diagram of a display panel provided in an embodiment of the present invention, the substrate 1 also includes at least two third electrodes 18, the third electrodes 18 are located at least inside the second substrate 4, and the arrangement direction of the third electrodes 18 is parallel to the plane where the second substrate 4 is located, wherein at least some of the third electrodes 18 receive different voltages.

[0045] The third electrode 18 can be provided to form a horizontal electric field, which repels static charges entering from the side of the display panel and prevents the static charges from further flowing into the interior of the display panel.

[0046] In one possible implementation, see Figure 5 The substrate 1 includes a first area 19 and a second area 20, and the second area 20 is located on a side of the first area 19 close to the outer edge of the display panel.

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

[0048] Taking the second area 20 including 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 close to the outer edge of the display panel, and 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, v21>v22. The direction of the electric field formed between the third electrode 18-1 and the third electrode 18-2 points to the first area 19, thereby repelling the static charge entering from the side of the display panel to a position away from the first area 19, preventing the static charge from further flowing 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. 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, so that a stronger electric field is formed between the third electrodes 18, which further suppresses the static charge from entering the interior of the display panel and prevents the static charge from accumulating on the upper surface of the second substrate 4.

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

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

[0052] Combination Figure 7 , Figure 7Another 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 cubic "electric field cages" one by one, and the electric field cage can be used to constrain ions and charges. The incoming static charges are concentrated in the electric fields in different directions and repelled to a position away from the upper surface of the second substrate, further inhibiting the aggregation of ions and charges on the upper surface of the second substrate 4.

[0053] In a possible implementation, combining Figure 6 , Figure 8 and Fig. 9 , Figure 8 Another schematic diagram of the electric field direction provided by an embodiment of the present invention, Fig. 9 Another schematic diagram of the electric field direction provided by an embodiment of the present invention, the substrate 1 includes a first edge 22 and a second edge 23 opposite to each other in a 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 a side of the fourth region 25 close to the first edge 22, and 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 voltage received by the third electrode 18 closer to the first edge 22 is greater than the voltage received by the other third electrode 18. For at least partially adjacent third electrodes 18 in the fourth region 25, the voltage received by the third electrode 18 closer to the second edge 23 is greater than the voltage received by 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 to the direction of the fourth region 25 will be formed between at least some 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 toward 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 to the direction of the third region 24 will be formed between at least some 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 toward the second edge 23, so that it will not penetrate further inward.

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

[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, v21>v21.

[0059] Under this setting, the static charge entering from the first edge 22 side will be repelled by a part of the electric field pointing to the fourth area 25 in the third area 24, preventing the static charge from continuing to flow inward, and the static charge entering from the second edge 23 side will be repelled by a part of the electric field pointing to the third area 24 in the fourth area 25, preventing the static charge from continuing to flow inward. Moreover, the voltage design of the third electrode 18 is relatively simple, and only two voltages need to be designed for the third electrode 18, which reduces the design difficulty.

[0060] Or, combined Figure 6 and Fig. 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 Fig. 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, and 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, and v8>v7>v6>v5.

[0062] Under this setting, in the third area 24, the directions of the electric field formed by the two adjacent third electrodes 18 are both directed to the fourth area 25. Therefore, the static charge entering from the side of the first edge 22 will be more strongly repelled in the third area 24 and it will be difficult to continue to flow inward. Similarly, in the fourth area 25, the directions of the electric field formed by the two adjacent third electrodes 18 are both directed to the third area 24. Therefore, the static charge entering from the side of the second edge 23 will be more strongly repelled in the fourth area 25 and it will be difficult to continue to flow inward.

[0063] In a possible implementation, combining Figure 6 and Fig.10 , Fig.10 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, the fluorine ions and static charges in the second substrate 4 can still move away from the array layer 2 under the action of the electric field formed by part of the first electrode group 21, thereby reducing the fluorine ions and static charges accumulated on the surface of the second substrate 4 to a certain extent.

[0065] Furthermore, in order 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, and the third voltage is different from the fourth voltage.

[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, and the first electrode 5 in the other first electrode group 21 receives voltage v21 and the second electrode 6 receives voltage v22, v11>v12.

[0067] In one embodiment, see Fig.10 The direction of the electric field formed by the third electrode can follow a left-right alternating rule, and the direction of the electric field formed by the first electrode group can follow a top-bottom alternating rule.

[0068] In one possible 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 where the second substrate 4 is located. 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 a possible implementation, Fig.11 As shown, Fig.11 Another structural schematic diagram of a display panel provided by an embodiment of the present invention, in a direction perpendicular to the plane where the second substrate 4 is located, at least part of the second electrode 6 overlaps with the channel of the active layer in the transistor 7. At this time, this part of the second electrode 6 can also act as a shielding metal to prevent external ambient light from irradiating the channel of the transistor 7 and affecting the carrier concentration in the channel. In other words, there is no need to set up additional shielding metal in the display panel, which helps to simplify the panel structure.

[0070] Based on the same inventive concept, an embodiment of the present invention further provides a display device, such as Fig.12 As shown, Fig.121 is a schematic diagram of a structure of a display device provided by an embodiment of the present invention, and the display device includes the above-mentioned display panel 100. Of course, Fig.12 The display device shown is for illustration only, and the display device may be any electronic device with a display function, such as a mobile phone, a tablet computer, a laptop computer, an e-reader or a 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 in 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, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display panel, characterized in that: The invention comprises a substrate, wherein the substrate comprises a first substrate and a second substrate, a first electrode is arranged between the first substrate and the second substrate, and a second electrode is arranged on a side of the second substrate away from the first substrate, wherein at least part of the first electrode and at least part of the second electrode receive different voltages.

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

3. The display panel according to claim 1, characterized in that: The substrate includes a plurality of first electrodes arranged along a first direction and a plurality of second electrodes arranged along the first direction, and the first electrodes overlap with the second electrodes in a direction perpendicular to a plane where the first substrate is located.

4. The display panel according to claim 3, characterized in that: The first electrode includes a first sub-portion and a plurality of second sub-portions, the first sub-portion extends along a second direction, the second sub-portions protrude from the first sub-portion along the first direction, and the second direction intersects with the first direction; The second electrode includes a third sub-portion and a plurality of fourth sub-portions. The third sub-portion extends along the second direction, and the fourth sub-portions protrude from the third sub-portion along the first direction.

5. The display panel according to claim 1, characterized in that: The voltage received by the first electrode is greater than the voltage received by the second electrode.

6. The display panel according to claim 1, characterized in that: The substrate further includes at least two third electrodes, which are located at least in the second substrate. The arrangement direction of the third electrodes is parallel to the plane where the second substrate is located, wherein at least some of the third electrodes receive different voltages.

7. The display panel according to claim 6, characterized in that: The substrate comprises a first area and a second area, wherein the second area is located on a side of the first area close to an outer edge of the display panel; The first electrode and the second electrode are located in the first area; at least part of the third electrode is located in the second area, and, for two adjacent third electrodes in the second area, the third electrode closer to the outer edge of the substrate receives a voltage greater than the voltage received by the other third electrode.

8. The display panel according to claim 7, characterized in that: The voltage received by the first electrode is greater than the voltage received by the second electrode; The voltage difference between two adjacent third electrodes in the second region is greater than the voltage difference between the first electrode and the third electrode.

9. The display panel according to claim 6, characterized in that: The substrate includes a plurality of first electrode groups, the first electrode groups include the first electrodes and the second electrodes, and in a direction perpendicular to a plane where the first substrate is located, the first electrodes in the first electrode groups overlap with the second electrodes; In a direction perpendicular to the plane where the first substrate is located, the projection of the first electrode group is spaced between at least some of the projections of adjacent third electrodes.

10. The display panel according to claim 9, characterized in that: The substrate comprises a first edge and a second edge opposite to each other in a first direction, the substrate comprises a third region and a fourth region arranged along the first direction, the third region is located on a side of the fourth region close to the first edge, and the third region and the fourth region respectively comprise the third electrode; For the third electrodes at least partially adjacent to each other in the third region, the voltage received by the third electrode closer to the first edge is greater than the voltage received by the other third electrode; For the third electrodes that are at least partially adjacent to each other in the fourth region, the voltage received by the third electrode that is closer to the second edge is greater than the voltage received by the other third electrode.

11. The display panel according to claim 10, characterized in that: One of two adjacent third electrodes receives a first voltage, and the other receives a second voltage, and the first voltage is different from the second voltage.

12. The display panel according to claim 10, characterized in that: For the third electrode in the third region, along the direction from the first edge to the second edge, the voltage received by the third electrode decreases gradually; For the third electrode in the fourth region, the voltage received by the third electrode decreases gradually along the direction from the second edge to the first edge.

13. The display panel according to claim 9, 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, and in some of the first electrode groups, the voltage received by the first electrode is less than the voltage received by the second electrode.

14. The display panel according to claim 13, characterized in that: For two adjacent first electrode groups, the first electrodes in one of the first electrode groups receive a third voltage and the second electrodes receive a fourth voltage, and the first electrodes in the other first electrode group receive the fourth voltage and the second electrodes receive the third voltage, and the third voltage is different from the fourth voltage.

15. The display panel according to claim 6, characterized in that: The third electrode penetrates the second substrate and protrudes from the second substrate in a direction perpendicular to a plane where the second substrate is located.

16. The display panel according to claim 1, characterized in that: The display panel further comprises an array layer located on one side of the substrate, the array layer comprising transistors, wherein at least a portion of the second electrode overlaps with a channel of an active layer in the transistor in a direction perpendicular to a plane where the second substrate is located.

17. A display device, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 16.

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