Display panel and display device

Abstract

The invention discloses a display panel and a display device.The display panel comprises a substrate and a driving circuit layer, the driving circuit layer is located on one side of the substrate and comprises a first electrode and a second electrode which are arranged in the direction perpendicular to the substrate, and the second electrode comprises a first layer and a second layer which are arranged in the direction perpendicular to the substrate; the first layer comprises an entity part and an opening part penetrating through the entity part, the second layer comprises a strip-shaped electrode part, and at least part of orthographic projection of the strip-shaped electrode part on the first layer is located in the opening part. The light emitting efficiency of the display panel provided by the invention is higher.

Description

Technical Field

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

[0002] Liquid Crystal Display (LCD) has the characteristics of small size and low power consumption, so it is widely used in various consumer electronic products such as mobile phones, televisions, personal digital assistants, digital cameras, notebook computers, desktop computers, etc., becoming the mainstream of display devices. The light extraction efficiency of liquid crystal display panels in related technologies still has room for improvement. Summary of the invention

[0003] The purpose of this application is to at least solve the problem that the light extraction efficiency of the display panel needs to be improved. This purpose is achieved through the following technical solutions:

[0004] A first aspect of the present application provides a display panel, comprising:

[0005] substrate substrate;

[0006] The driving circuit layer is located on one side of the base substrate, and includes a first electrode and a second electrode arranged in a direction perpendicular to the base substrate, the second electrode includes a first layer and a second layer arranged in a direction perpendicular to the base substrate, the first layer includes a solid portion and an opening portion passing through the solid portion, the second layer includes a strip electrode portion, and at least a part of the positive projection of the strip electrode portion on the first layer is located in the opening portion.

[0007] The display panel provided in the present application includes a base substrate and a driving circuit layer, and the driving circuit layer is located on one side of the base substrate and is used to drive the display panel for display. The driving circuit layer includes a first electrode and a second electrode arranged in a stacked manner. The second electrode includes a first layer and a second layer arranged in a stacked manner. Specifically, the first layer may be located on a side of the second layer away from the base substrate, or the first layer may be located on a side of the second layer facing the base substrate. The first layer includes a solid portion and an opening portion, and the opening portion penetrates the solid portion along the thickness direction of the first layer. The second layer includes a strip electrode portion, and at least part of the positive projection of the strip electrode portion on the first layer is located in the opening portion, thereby increasing the driving electric field formed in the first electrode and the second electrode to further improve the light extraction efficiency of the display panel.

[0008] In some embodiments of the present application, the display panel includes a plurality of sub-pixel regions, the physical portion includes a first physical sub-portion corresponding one-to-one to the sub-pixel regions, and each of the sub-pixel regions includes at least one of the opening portions.

[0009] In some embodiments of the present application, the first layer is connected to the second layer.

[0010] In some embodiments of the present application, the opening portions correspond to the strip-shaped electrode portions one by one, the strip-shaped electrode portions are in the shape of straight strips, and the first physical portions located in different sub-pixel areas are arranged at intervals.

[0011] In some embodiments of the present application, an orthographic projection of the strip-shaped electrode portion on the base substrate intersects with an orthographic projection of the first entity portion on the base substrate, and the strip-shaped electrode portion is connected to the first entity portion at the intersection position.

[0012] In some embodiments of the present application, a first insulating layer is provided between the first layer and the second layer, and the strip-shaped electrode portion is connected to the first physical portion through a via hole penetrating the first insulating layer.

[0013] In some embodiments of the present application, each of the openings corresponds to one of the strip-shaped electrode portions, each of the strip-shaped electrode portions corresponds to at least one of the openings, and the first physical sub-portions located in different sub-pixel regions are connected to each other;

[0014] There are a plurality of first electrodes, the plurality of first electrodes are arranged at intervals, and each first electrode corresponds to one sub-pixel region.

[0015] In some embodiments of the present application, the display panel includes a display area and a non-display area located on the periphery of the display area, part of the solid portion is located in the display area, another part of the solid portion is located in the non-display area, part of the strip electrode portion is located in the display area, another part of the strip electrode portion is located in the non-display area, each of the strip electrode portions corresponds to a plurality of the opening portions, and the strip electrode portions are connected to the solid portion in the non-display area.

[0016] In some embodiments of the present application, a first insulating layer is arranged between the first layer and the second layer, a portion of the first insulating layer is located in the display area, and another portion of the first insulating layer is located in the non-display area, and in the non-display area, the strip electrode portion is connected to the solid portion through a via hole penetrating the first insulating layer.

[0017] In some embodiments of the present application, two ends of each of the strip-shaped electrode portions correspond to a via hole respectively; or, adjacent via holes are connected to each other.

[0018] In some embodiments of the present application, the second layer further includes a strip-shaped connecting portion, the strip-shaped connecting portion is vertically arranged to the strip-shaped electrode portion, the orthographic projection of the strip-shaped connecting portion on the first layer does not overlap with the opening portion, the strip-shaped connecting portion is connected between adjacent strip-shaped electrode portions, and the strip-shaped connecting portion is connected to the first layer in the non-display area.

[0019] In some embodiments of the present application, the orthographic projection of the strip electrode portion on the base substrate intersects with the orthographic projection of the first physical portion on the base substrate in the display area, and defines a first area and a second area, and the strip electrode portion is connected to the first physical portion at the intersection position.

[0020] In some embodiments of the present application, a first insulating layer is provided between the first layer and the second layer, and the strip-shaped electrode portion is connected to the first physical portion in the first region and the second region through vias penetrating the first insulating layer.

[0021] In some embodiments of the present application, the opening portion is rectangular, the strip electrode portion extends along a first direction, and the symmetry axis of the strip electrode portion parallel to the first direction coincides with the symmetry axis of the opening portion parallel to the first direction.

[0022] In some embodiments of the present application, the width of the first entity portion between adjacent openings is W, 1.6 μm≤W≤2.6 μm; the short side dimension of the opening is S, 4.8 μm≤S≤7.8 μm.

[0023] In some embodiments of the present application, the first layer and the second layer are made of transparent conductive material.

[0024] In some embodiments of the present application, the display panel further includes a liquid crystal layer located on a side of the driving circuit layer away from the base substrate.

[0025] The second aspect of the present application further provides a display device, comprising any display panel provided in the first aspect of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0027] Figure 1 is a schematic diagram of the structure of a first display panel provided in an embodiment of the present application;

[0028] Figure 2yes Figure 1 Enlarged view of the middle Q region;

[0029] Figure 3 yes Figure 2 Sectional view along the middle line M-M';

[0030] Figure 4 yes Figure 2 A cross-sectional view taken along the N-N' line;

[0031] Figure 5 It is a schematic diagram of a partial structure of a display panel in the related art;

[0032] Figure 6 yes Figure 5 A cross-sectional view taken along the line E-E';

[0033] Figure 7 is a schematic diagram of a film layer structure of a display panel provided in an embodiment of the present application;

[0034] Figure 8 is a partial structural schematic diagram of a second display panel provided in an embodiment of the present application;

[0035] Fig. 9 is a partial structural diagram of a third display panel provided in an embodiment of the present application;

[0036] Fig.10 is a partial structural diagram of a fourth display panel provided in an embodiment of the present application;

[0037] Fig.11 is a schematic diagram of a manufacturing process of a display panel provided in an embodiment of the present application;

[0038] Fig.12 yes Fig.11 A cross-sectional view along the F-F' line;

[0039] Fig.13 is a partial structural diagram of a fifth display panel provided in an embodiment of the present application;

[0040] Fig.14 yes Figure 1 An enlarged view of the middle T region;

[0041] Fig.15 yes Figure 1 Another magnified view of the middle T region;

[0042] Fig.16 It is a structural schematic diagram of a display device provided in an embodiment of the present application.

[0043] The reference numerals are as follows:

[0044] 1. display panel; 11. base substrate; 12. driving circuit layer; 121. first electrode; 122. second electrode; 123. first layer; 1231. entity portion; 1232. opening portion; 1233. first entity portion; 124. second layer; 1241. strip electrode portion; 1242. strip connecting portion; P1. sub-pixel region; 125. first insulating layer; 1251. via hole; 126. second insulating layer; AA. display area; NA. non-display area; x. first direction; 13. color film substrate; 14. liquid crystal layer; 2. display device; 01. lower electrode; 02. opening; 03. entity. DETAILED DESCRIPTION

[0045] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0046] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0047] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0048] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0049] like Figures 1 to 4 As shown, according to an embodiment of the present application, a display panel 1 is proposed, which includes a base substrate 11 and a driving circuit layer 12, wherein the driving circuit layer 12 is located on one side of the base substrate 11, the driving circuit layer 12 includes a first electrode 121 and a second electrode 122 arranged in a direction perpendicular to the base substrate 11, the second electrode 122 includes a first layer 123 and a second layer 124 arranged in a direction perpendicular to the base substrate 11, the first layer 123 includes a solid portion 1231 and an opening portion 1232 passing through the solid portion 1231, the second layer 124 includes a strip electrode portion 1241, and at least a part of the positive projection of the strip electrode portion 1241 on the first layer 123 is located in the opening portion 1232.

[0050] The display panel 1 provided in the present application includes a base substrate 11 and a driving circuit layer 12. The driving circuit layer 12 is located on one side of the base substrate 11 and is used to drive the display panel 1 to display. The driving circuit layer 12 includes a first electrode 121 and a second electrode 122 arranged in a stacked manner. The second electrode 122 is located on a side of the first electrode 121 away from the base substrate 11. The second electrode 122 includes a first layer 123 and a second layer 124 arranged in a stacked manner. Specifically, the first layer 123 may be located on a side of the second layer 124 away from the base substrate 11, or the first layer 123 may be located on a side of the second layer 124 facing the base substrate 11. The first layer 123 includes a solid portion 1231 and an opening portion 1232. The opening portion 1232 penetrates the solid portion 1231 along the thickness direction of the first layer 123. The second layer 124 includes a strip-shaped electrode portion 1241, and at least a portion of the orthographic projection of the strip-shaped electrode portion 1241 on the first layer 123 is located in the opening portion 1232. The orthographic projection of the strip-shaped electrode portion 1241 on the first layer 123 exposes portions of the opening portion 1232 located on both sides of the strip-shaped electrode portion 1241, so that the first electrode 121 forms an electric field with the strip-shaped electrode portion 1241 after passing through the portion of the opening portion 1232 exposed by the strip-shaped electrode portion 1241, so as to improve the driving efficiency of the driving circuit layer 12.

[0051] Specifically, in the present application, by providing the second layer 124, that is, by providing the strip electrode portion 1241, the area of ​​the physical region in the second electrode 122 is increased, and the area of ​​the electric field region in the driving circuit layer 12 is increased, so that the light efficiency of the display panel 1 can be effectively improved. Compared with the display panel 1 in the related art, Figure 5 and Figure 6 As shown, in the display panel in the related art, the lower electrode 01 only forms an electric field with the entities 03 on both sides of the opening 02, while in the display panel 1 provided in the present application, Figure 3 As shown, the first electrode 121 forms an electric field not only with the solid parts 1231 on both sides of the opening 1232 , but also with the strip electrode parts 1241 , thereby helping to increase the area of ​​the electric field region in the driving circuit layer 12 , thereby improving the driving effect.

[0052] Moreover, the design method in the present application makes it easier to prepare the second electrode 122. Specifically, for a display panel 1 with a smaller sub-pixel area, the opening 1232 in the first layer 123 is smaller. Due to the limitations of process capabilities and manufacturing equipment, it is usually impossible to form a strip electrode in the opening 1232 in the first layer 123, which makes the light efficiency of the display panel 1 low. In the display panel 1 provided by the present application, the light extraction efficiency of the display panel 1 can be greatly improved by adding the second layer 124. During the preparation process, the first layer 123 is formed by a mask process. The first layer 123 includes a solid portion 1231 and an opening 1232. The preparation of the first layer 123 is not limited by the limits of the process and equipment. The second layer 124 is formed, that is, a strip electrode portion 1241 is formed, and the portion of the strip electrode portion 1241 in the orthographic projection on the first layer 123 is located in the opening 1232, and the portions of the opening 1232 located on both sides of the strip electrode portion 1241 in its own extension direction are exposed through the strip electrode portion 1241, so that the first electrode 121 can pass through both sides of the strip electrode portion 1241 and form an electric field with the strip electrode portion 1241. The preparation of the second layer 124 is not limited by the limits of the process and equipment, and the area of ​​the electric field region in the driving circuit layer 12 is increased. That is, the display panel 1 provided in the present application realizes the preparation of a display panel 1 with high driving efficiency under the premise that the preparation process and manufacturing equipment allow, and reduces the difficulty of preparation. The display panel 1 can be a high PPI display panel 1, and the display panel 1 has a high pixel density and a better display effect.

[0053] Therefore, the technical solution disclosed in the present invention increases the electric field area of ​​the first electrode 121 and the second electrode 122 by setting the second electrode 122 as a first layer 123 and a second layer 124 that are stacked, thereby improving the driving effect; and, by setting the first layer 123 and the second layer 124 to be located in two different layers, the limitation of the process capability on the second electrode 122 is avoided, so that the second electrode 122 that meets the requirements can be prepared by using the existing process capabilities and equipment, so that the solution can be applied to high PPI products without causing any loss in the product transmittance.

[0054] In the above-mentioned embodiment, the material of the base substrate 11 may include glass or polyimide.

[0055] In a possible implementation, Figure 7 As shown, the display panel 1 further includes a liquid crystal layer 14 located on a side of the driving circuit layer 12 away from the base substrate 11 .

[0056] In the above embodiment, the display panel 1 is a liquid crystal display panel 1 , one of the first electrode 121 and the second electrode 122 is a pixel electrode, and the other is a common electrode, that is, the second electrode 122 can be a pixel electrode or a common electrode.

[0057] In the above embodiment, the liquid crystal layer 14 is located on the side of the driving circuit layer 12 away from the base substrate 11, and the driving circuit layer 12 is used to drive the liquid crystal layer 14 for display. When the driving efficiency of the driving circuit layer 12 is higher, the deflection rate of the liquid crystal layer 14 is better, and the transmittance of the backlight module located on the side of the base substrate 11 away from the driving circuit layer 12 is better, thereby improving the light extraction efficiency of the display panel 1.

[0058] like Figure 7 As shown, the display panel 1 further includes a color filter substrate 13 , and the color filter substrate 13 is located on a side of the liquid crystal layer 14 away from the base substrate 11 .

[0059] In a possible implementation, Figure 2 As shown, the display panel 1 includes a plurality of sub-pixel regions P1 , the solid portion 1231 includes first solid sub-portions 1233 corresponding to the sub-pixel regions P1 one by one, and each sub-pixel region P1 includes at least one opening 1232 .

[0060] In the above embodiment, the display panel 1 includes a plurality of sub-pixel regions P1, and each sub-pixel region P1 is used to form a sub-pixel. The entity portion 1231 includes a first entity sub-portion 1233 corresponding to the sub-pixel region P1 one by one, and the first entity sub-portions 1233 in adjacent sub-pixel regions P1 are interconnected or independent of each other. When the first entity sub-portions 1233 in adjacent sub-pixel regions P1 are interconnected, the first layer 123 is a mesh structure arranged on the entire surface, the second electrode 122 is a common electrode at this time, and the first electrode 121 is a pixel electrode at this time. The first electrodes 121 are multiple and arranged at intervals, and the first electrodes 121 correspond to the sub-pixel regions P1 one by one. Specifically, each first electrode 121 is located in a sub-pixel region P1. As Figure 8 and Fig. 9 As shown, when the first physical divisions 1233 in adjacent sub-pixel regions P1 are independent of each other, the second electrode 122 is now a pixel electrode, and the first electrode 121 is a common electrode. The first electrode 121 may be a planar structure arranged on the entire surface, or there may be multiple first electrodes 121, and the multiple first electrodes 121 are arranged at intervals, and the first electrodes 121 correspond one-to-one to the pixel electrodes.

[0061] In the above embodiment, each sub-pixel region P1 includes at least one opening 1232. Figure 8 As shown, when each sub-pixel region P1 forms a plurality of opening portions 1232, the plurality of opening portions 1232 are arranged along the first direction x, and each opening portion 1232 may correspond to a strip-shaped electrode portion 1241. When each sub-pixel region P1 includes a plurality of opening portions 1232, the plurality of strip-shaped electrode portions 1241 are arranged along the first direction x to form a specified driving electric field.

[0062] In a possible implementation, Figure 4 As shown, the first layer 123 is connected to the second layer 124 .

[0063] In the above embodiment, since the first layer 123 and the second layer 124 together constitute the second electrode 122, the power supply requirements of the first layer 123 and the second layer 124 in each sub-pixel area P1 are the same. The first layer 123 and the second layer 124 can be powered separately, or the first layer 123 and the second layer 124 can be interconnected to power together, thereby saving the wiring of the power supply line and reducing the difficulty of preparing the second electrode 122.

[0064] In a possible implementation, Figure 8 and Fig. 9 As shown, the openings 1232 correspond to the strip electrode portions 1241 one by one. The strip electrode portions 1241 are in a straight line shape. The first physical portions 1233 located in different sub-pixel regions P1 are arranged at intervals.

[0065] In the above embodiment, the second electrode 122 is a pixel electrode. At this time, since the power supply requirements of the first physical divisions 1233 in different sub-pixel regions P1 are different, the openings 1232 and the strip electrode portions 1241 are arranged in one-to-one correspondence and connected to each other.

[0066] In the above embodiment, the strip-shaped electrode portions 1241 are in a straight strip shape, and the length directions of different strip-shaped electrode portions 1241 are the same to form a required driving electric field.

[0067] Specifically, the openings 1232 correspond to the strip-shaped electrode portions 1241 one by one, and each first entity portion 1233 forms at least one opening 1232 , so each first entity portion 1233 corresponds to at least one strip-shaped electrode portion 1241 . Fig.10 As shown, when each first physical sub-portion 1233 forms a plurality of opening portions 1232 , each first physical sub-portion 1233 corresponds to a plurality of strip-shaped electrode portions 1241 .

[0068] In the above embodiment, each first entity division 1233 can form a plurality of opening portions 1232. Taking the case where each first entity division 1233 forms two opening portions 1232 as an example, each opening portion 1232 corresponds to the first strip electrode portion 1241, and different opening portions 1232 in each first entity division 1233 correspond to different strip electrode portions 1241. The corresponding plurality of strip electrode portions 1241 in each first entity division 1233 are parallel, thereby ensuring that in the sub-pixel area P1, the electric field formed between the first electrode 121 and the first entity portion 1231, and the electric field formed between the first electrode 121 and the strip electrode portion 1241 meet the requirements. The purpose of forming multiple openings 1232 in each first physical division 1233 is to form a stronger electric field. The purpose of forming a strip electrode portion 1241 on the side of the opening 1232 close to or away from the base substrate 11 is also to form an electric field between the strip electrode portion 1241 and the first electrode 121, so as to further enhance the strength of the electric field in the sub-pixel area P1.

[0069] In a possible implementation, Figure 4 as well as Figures 8 to 10 As shown, the orthographic projection of the strip electrode portion 1241 on the base substrate 11 intersects with the orthographic projection of the first entity portion 1233 on the base substrate 11 and defines a first area and a second area, and the strip electrode portion 1241 is connected to the first entity portion 1233 at the intersection position.

[0070] In the above embodiment, the orthographic projection of the strip electrode portion 1241 on the base substrate 11 intersects with the orthographic projection of the first entity subdivision 1233 on the base substrate 11. Specifically, the orthographic projection of each strip electrode portion 1241 on the base substrate 11 intersects with the orthographic projection of each first entity subdivision 1233 on the base substrate 11 along its length direction. There are two intersecting regions, namely, the first region and the second region, and the strip electrode portion 1241 is connected to the first entity subdivision 1233 in the first region and the second region. In a feasible embodiment, a first insulating layer 125 is provided between the first layer 123 and the second layer 124, and the strip electrode portion 1241 is connected to the first entity subdivision 1233 through a via 1251 penetrating the first insulating layer 125.

[0071] In the above embodiment, the first insulating layer 125 may be made of a light-transmitting inorganic material, such as silicon nitride or silicon oxide, etc. The inorganic material has a better insulating effect and can provide a good support for the second layer 124 .

[0072] In the above implementation mode, if Fig.11 and Fig.12As shown, after preparing the first insulating layer 125 and before preparing the second layer 124, a via 1251 penetrating the first insulating layer 125 is formed in a preset area on the first insulating layer 125 through a mask process, and the strip electrode portion 1241 is connected to the first physical portion 1233 through the via 1251 penetrating the first insulating layer 125.

[0073] In the above embodiment, the side of the first insulating layer 125 facing away from the base substrate 11 includes a recess corresponding to the opening 1232 , and the portion of the strip electrode portion 1241 corresponding to the opening 1232 is located in the recess.

[0074] In a possible implementation, Figure 2 and Fig.13 As shown, each opening 1232 corresponds to a strip electrode portion 1241, each strip electrode portion 1241 corresponds to at least one opening 1232, and the first physical sub-portions 1233 located in different sub-pixel regions P1 are connected to each other. There are multiple first electrodes 121, and the multiple first electrodes 121 are arranged at intervals, and each first electrode 121 corresponds to a sub-pixel region P1.

[0075] In the above embodiment, the second electrode 122 is a common electrode. At this time, since the first physical divisions 1233 in different sub-pixel regions P1 have the same power supply requirements, adjacent first physical divisions 1233 are connected to each other to facilitate synchronous power supply.

[0076] In the above embodiment, the sub-pixel regions P1 in the display panel 1 can be distributed in an array, the openings 1232 in the same column can correspond to the same strip electrode portion 1241, and the same strip electrode portion 1241 corresponds to multiple openings 1232 in the same column, thereby simplifying the preparation process.

[0077] In the above embodiment, the first electrode 121 is a pixel electrode. There are multiple first electrodes 121 . The multiple first electrodes 121 are arranged at intervals. Each first electrode 121 corresponds to a sub-pixel region P1 . A first electrode 121 is arranged in each sub-pixel region P1 .

[0078] In a possible implementation, Figure 1 and Fig.14 As shown, the display panel 1 includes a display area AA and a non-display area NA located on the peripheral side of the display area AA, a portion of the physical portion 1231 is located in the display area AA, another portion of the physical portion 1231 is located in the non-display area NA, a portion of the strip electrode portion 1241 is located in the display area AA, another portion of the strip electrode portion 1241 is located in the non-display area NA, each strip electrode portion 1241 corresponds to a plurality of opening portions 1232, and the strip electrode portion 1241 is connected to the physical portion 1231 in the non-display area NA.

[0079] In the above embodiment, when the first electrode 121 is a pixel electrode and the second electrode 122 is a common electrode, the strip electrode portion 1241 and the entity portion 1231 may be connected in the non-display area NA. Specifically, each strip electrode may correspond to a plurality of openings 1232. When the openings 1232 are arranged in rows and columns, each strip electrode may correspond to a column of openings 1232. Each strip electrode portion 1241 is connected to the entity portion 1231 only at both ends of its length direction. Specifically, the entity portion 1231 includes a second entity sub-portion located in the non-display area NA, and the second entity sub-portion is connected to the first entity sub-portion 1233. The strip electrode portion 1241 may be connected to the second entity sub-portion in the non-display area NA, thereby realizing the connection between the strip electrode portion 1241 and the first entity sub-portion 1233.

[0080] In the above embodiment, the strip electrode portion 1241 is not connected to the first physical portion 1231 in the display area AA, thereby reducing the adverse effect on the display effect of the display area AA.

[0081] In a feasible embodiment, a first insulating layer 125 is arranged between the first layer 123 and the second layer 124, a portion of the first insulating layer 125 is located in the display area AA, and another portion of the first insulating layer 125 is located in the non-display area NA, and in the non-display area NA, the strip electrode portion 1241 is connected to the physical portion 1231 through a via 1251 that penetrates the first insulating layer 125.

[0082] In the above embodiment, the first insulating layer 125 is disposed between the first layer 123 and the second layer 124 . The first insulating layer 125 is used to isolate the first layer 123 from the second layer 124 and to support the second layer 124 .

[0083] The first insulating layer 125 is partially located in the non-display area NA, and is used to isolate the portion of the first layer 123 located in the non-display area NA from the portion of the second layer 124 located in the non-display area NA. The orthographic projection of the end of the strip electrode portion 1241 on the array substrate coincides with the orthographic projection of the first layer 123 on the array substrate, and a via hole 1251 is formed in the portion of the first insulating layer 125 located between the end of the strip electrode portion 1241 and the first layer 123, and the second layer 124 is connected to the first layer 123 through the via hole 1251.

[0084] In a feasible implementation manner, two ends of each strip electrode portion 1241 correspond to a via hole 1251 ; or, adjacent via holes 1251 are connected to each other.

[0085] In the above embodiment, holes 1251 can be respectively opened in the portion of the first insulating layer 125 located below the end of the strip electrode portion 1241, so as to realize the connection between the strip electrode portion 1241 and the entity portion 1231. Alternatively, the portion of the first insulating layer 125 located in the non-display area NA can be removed, and in the subsequent process of forming the strip electrode portion 1241, the strip electrode portion 1241 can be directly in contact with the entity portion 1231 in the non-display area NA, so as to realize the connection between the two.

[0086] The mask times used in the above two implementations are the same, and both can achieve effective connection between the strip electrode portion 1241 and the entity portion 1231 .

[0087] In a possible implementation, Fig.15 As shown, the second layer 124 also includes a strip-shaped connecting portion 1242, which is vertically arranged to the strip-shaped electrode portion 1241, and the orthographic projection of the strip-shaped connecting portion 1242 on the first layer 123 has no overlap with the opening portion 1232. The strip-shaped connecting portion 1242 is connected between adjacent strip-shaped electrode portions 1241, and the strip-shaped connecting portion 1242 is connected to the first layer 123 in the non-display area NA.

[0088] In the above embodiment, by forming the strip-shaped connection part 1242 on the second layer 124, and connecting the adjacent strip-shaped electrode parts 1241 through the strip-shaped connection part 1242, the transmission speed of the signal can be accelerated, and the strip-shaped connection part 1242 is connected to the first layer 123 in the non-display area NA, so that the uniformity of the signal can be improved. Specifically, when the strip-shaped electrode part 1241 extends along the column direction, the strip-shaped connection part 1242 extends along the row direction to connect the adjacent strip-shaped electrode parts 1241 through the strip-shaped connection part 1242. At the same time, the two ends of the strip-shaped electrode part 1241 along the column direction are connected to the first layer 123, and the end of the strip-shaped connection part 1242 along the row direction is connected to the first layer 123, so that the connection position between the first layer 123 and the second layer 124 can be evenly distributed around the display area AA, so that the signal uniformity in the second layer 124 can be improved.

[0089] Specifically, the sub-pixel regions P1 may be distributed in rows and columns, each column of sub-pixel regions P1 corresponds to a strip electrode portion 1241, a row of strip connecting portions 1242 is arranged between each row of sub-pixel regions P1 and another row of adjacent sub-pixel regions P1, the strip connecting portions 1242 are arranged between adjacent strip electrode portions 1241, and a strip electrode portion 1241 is spaced between adjacent strip connecting portions 1242 along the row direction.

[0090] In a possible implementation, Fig.13As shown, the orthographic projection of the strip electrode portion 1241 on the base substrate 11 intersects with the orthographic projection of the first physical portion 1233 on the base substrate 11 in the display area AA, and the strip electrode portion 1241 is connected to the first physical portion 1233 at the intersection position.

[0091] In the above embodiment, the orthographic projection of the strip electrode portion 1241 on the base substrate 11 intersects with the orthographic projection of the first physical portion 1233 on the base substrate 11 in the display area AA, so as to realize the connection between the strip electrode portion 1241 and the first physical portion 1233 at the intersection position. Specifically, the intersection position is located in the display area AA, and there are two intersecting areas between each strip electrode portion 1241 and the first physical portion 1233 in each sub-pixel area P1, and the connection between the strip electrode portion 1241 and the first physical portion 1233 is realized in each area to improve the reliability of the connection and the uniform distribution of the connection positions.

[0092] In the above embodiment, the strip electrode portion 1241 corresponds to a plurality of first physical sub-portions 1233 , and each strip electrode portion 1241 has a plurality of connection positions with the physical region, thereby improving the reliability and uniformity of the connection between the two and improving the signal transmission speed.

[0093] In a feasible implementation, a first insulating layer 125 is disposed between the first layer 123 and the second layer 124 , and the strip electrode portion 1241 is connected to the first entity portion 1233 in the first area and the second area through a via 1251 penetrating the first insulating layer 125 .

[0094] In the above embodiment, although the via holes 1251 are located in the display area AA, they are evenly distributed, thereby reducing the adverse effects on the display effect.

[0095] In a possible implementation, Fig.13 As shown, the opening 1232 is rectangular, the strip electrode portion 1241 extends along the first direction x, and the symmetry axis L of the strip electrode portion 1241 parallel to the first direction x coincides with the symmetry axis L′ of the opening 1232 parallel to the first direction x.

[0096] In the above embodiment, the opening portion 1232 is a rectangle, the strip electrode portion 1241 extends along the first direction x, and the rectangle includes two sides parallel to the first direction x and two sides perpendicular to the first direction x.

[0097] The symmetry axis of the strip electrode portion 1241 parallel to the first direction x coincides with the symmetry axis of the opening portion 1232 parallel to the first direction x, thereby improving the uniformity of the electric field and further improving the display quality of each sub-pixel region P1.

[0098] In a possible implementation, Fig.13As shown, the width of the first entity portion 1233 between adjacent openings 1232 is W, 1.6 μm≤W≤2.6 μm; the short side dimension of the opening 1232 is S, 4.8 μm≤S≤7.8 μm.

[0099] In the above embodiment, the size of the opening 1232 is relatively small, and it is not convenient to form a strip electrode portion 1241 in the opening 1232 to form a grid electrode, which is limited by the preparation process and manufacturing equipment. Therefore, in the present application, the second electrode 122 is designed as a first layer 123 and a second layer 124, a first entity portion 1233 and an opening 1232 are formed in the first layer 123, and a strip electrode portion 1241 is formed in the second layer 124, and the strip electrode portion 1241 corresponds to the opening 1232, so that the strip electrode portion 1241 and the first entity portion 1233 are combined to form a grid electrode, so as to increase the area of ​​the electric field region, thereby improving the light extraction efficiency of the display panel 1.

[0100] Specifically, the length direction of the strip electrode portion 1241 is perpendicular to the short side of the opening 1232, and the first electrode 121 generates an electric field in the first physical division 1233 area corresponding to the long side of the opening 1232 and the strip electrode, thereby facilitating the improvement of the strength of the electric field.

[0101] Specifically, the short side dimension of the opening portion 1232 may be three times the width of the first physical portion 1233 between adjacent opening portions 1232 , and the width of the strip electrode portion 1241 may be the same as the width of the first physical portion 1233 between adjacent opening portions 1232 .

[0102] Specifically, the width W of the first entity portion 1233 between adjacent openings 1232 may be 1.6 μm, 1.7 μm, 1.8 μm, 1.9 μm, 2.0 μm, 2.2 μm, 2.4 μm, 2.5 μm, 2.6 μm, etc. The short side dimension S of the opening 1232 may be 4.8 μm, 4.9 μm, 5.0 μm, 5.1 μm, 5.3 μm, 5.5 μm, 6.3 μm, 6.8 μm, 7.8 μm, etc.

[0103] In a feasible implementation manner, the first layer 123 and the second layer 124 are made of transparent conductive material.

[0104] In the above embodiment, in order to improve the transmittance of the driving circuit layer 12 to the backlight module, the first layer 123 and the second layer 124 are both made of transparent conductive materials, such as indium tin oxide or indium zinc oxide.

[0105] In the above embodiment, the first electrode 121 is made of a transparent conductive material.

[0106] In a possible implementation, Figure 4 As shown, the driving circuit layer 12 further includes a second insulating layer 126, which is located between the first electrode 121 and the first layer 123. The second insulating layer 126 is used to achieve insulation between the first electrode 121 and the first layer 123, and the material of the second insulating layer 126 may include inorganic materials.

[0107] The present application also provides a display device 2, such as Fig.16 As shown, it includes any one of the display panels 1 provided in the above embodiments.

[0108] The display device 2 in the embodiment of the present application includes but is not limited to mobile phones, personal digital assistants (PDA), tablet computers, e-books, televisions, access control systems, smart landline phones, consoles and other devices with display functions.

[0109] In the above-mentioned embodiment, the display device 2 provided in the present application may be a display device 2 with a high pixel density, and the display panel 1 in the display device 2 has a high driving efficiency, so that the light extraction efficiency of the display device 2 is better, thereby improving the display quality of the display device 2.

[0110] The above are only preferred specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A display panel, characterized in that: include: substrate substrate; The driving circuit layer is located on one side of the base substrate, and includes a first electrode and a second electrode arranged in a direction perpendicular to the base substrate, the second electrode includes a first layer and a second layer arranged in a direction perpendicular to the base substrate, the first layer includes a solid portion and an opening portion passing through the solid portion, the second layer includes a strip electrode portion, and at least a part of the positive projection of the strip electrode portion on the first layer is located in the opening portion.

2. The display panel according to claim 1, characterized in that: The display panel includes a plurality of sub-pixel regions, the physical portion includes first physical sub-portions corresponding to the sub-pixel regions one by one, and each of the sub-pixel regions includes at least one of the openings.

3. The display panel according to claim 2, characterized in that: The first layer is connected to the second layer.

4. The display panel according to claim 3, characterized in that: The opening portions correspond to the strip-shaped electrode portions one by one. The strip-shaped electrode portions are in a straight line shape. The first physical portions located in different sub-pixel regions are arranged at intervals.

5. The display panel according to claim 4, characterized in that: The orthographic projection of the strip-shaped electrode portion on the base substrate intersects with the orthographic projection of the first entity portion on the base substrate, and the strip-shaped electrode portion is connected to the first entity portion at the intersection position.

6. The display panel according to claim 5, characterized in that: A first insulating layer is disposed between the first layer and the second layer, and the strip-shaped electrode portion is connected to the first physical portion through a via hole penetrating through the first insulating layer.

7. The display panel according to claim 3, characterized in that: Each of the openings corresponds to one of the strip-shaped electrode portions, each of the strip-shaped electrode portions corresponds to at least one of the openings, and the first physical sub-portions located in different sub-pixel regions are connected to each other; There are a plurality of first electrodes, the plurality of first electrodes are arranged at intervals, and each first electrode corresponds to one sub-pixel region.

8. The display panel according to claim 7, characterized in that: The display panel includes a display area and a non-display area located on the periphery of the display area, a portion of the solid portion is located in the display area, another portion of the solid portion is located in the non-display area, a portion of the strip electrode portion is located in the display area, another portion of the strip electrode portion is located in the non-display area, each of the strip electrode portions corresponds to a plurality of the opening portions, and the strip electrode portions are connected to the solid portion in the non-display area.

9. The display panel according to claim 8, characterized in that: A first insulating layer is arranged between the first layer and the second layer, a portion of the first insulating layer is located in the display area, and another portion of the first insulating layer is located in the non-display area. In the non-display area, the strip electrode portion is connected to the solid portion through a via hole penetrating the first insulating layer.

10. The display panel according to claim 9, characterized in that: Two ends of each of the strip-shaped electrode portions correspond to a via hole respectively; or adjacent via holes are connected to each other.

11. The display panel according to claim 9, characterized in that: The second layer also includes a strip-shaped connecting portion, which is arranged perpendicular to the strip-shaped electrode portion, and the orthographic projection of the strip-shaped connecting portion on the first layer does not overlap with the opening portion. The strip-shaped connecting portion is connected between adjacent strip-shaped electrode portions, and the strip-shaped connecting portion is connected to the first layer in the non-display area.

12. The display panel according to claim 7, characterized in that: The orthographic projection of the strip electrode portion on the base substrate intersects with the orthographic projection of the first entity portion on the base substrate in the display area, and defines a first area and a second area. The strip electrode portion is connected to the first entity portion at the intersection position.

13. The display panel according to claim 12, characterized in that: A first insulating layer is disposed between the first layer and the second layer, and the strip-shaped electrode portion is connected to the first physical portion in the first area and the second area through via holes penetrating the first insulating layer.

14. The display panel according to claim 1, characterized in that: The opening portion is rectangular, the strip-shaped electrode portion extends along a first direction, and a symmetry axis in the strip-shaped electrode portion parallel to the first direction coincides with a symmetry axis in the opening portion parallel to the first direction.

15. The display panel according to claim 2, characterized in that: The width of the first entity portion between adjacent openings is W, 1.6 μm≤W≤2.6 μm; the short side dimension of the opening is S, 4.8 μm≤S≤7.8 μm.

16. The display panel according to claim 1, characterized in that: The first layer and the second layer are made of transparent conductive material.

17. The display panel according to claim 1, characterized in that: The display panel further includes a liquid crystal layer located on a side of the driving circuit layer away from the base substrate.

18. A display device, characterized in that: Comprising a display panel as described in any one of claims 1-17.

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