Display panel and display device
By designing cross-arranged retaining wall structure and communication paths in the display panel, the problem of uneven display of electronic paper is solved, and the uniform distribution and rapid response of electrophoretic liquid are achieved.
Patent Information
- Application Number
- CN202510901555.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-30
- Publication Date
- 2025-08-01
AI Technical Summary
There is a problem of uneven display during the display process of electronic paper, which is mainly due to the uneven diffusion of the electrophoretic liquid, which causes uneven distribution of the electrophoretic liquid. The prior art solves the problem by increasing the amount of electrophoretic droplets, but it leads to a larger box thickness and a slow response speed.
A display panel structure is designed, wherein the preset area is enclosed by a first retaining wall and a second retaining wall arranged in an intersecting manner, including a first passage and a target position, and the preset area is connected through the first passage to reduce the diffusion resistance of the electrophoretic liquid and avoid diffusion holes.
Effectively promote the diffusion of the electrophoretic liquid to the target position, avoid diffusion holes, keep the box thickness and response speed unchanged, and solve the problem of uneven display.
Smart Images
Figure CN120406023A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of display technologies, and in particular, to a display panel and a display device. Background Art
[0002] Due to its advantages such as simple manufacturing process and ultra-low power consumption, electronic paper is widely used in fields such as conference nameplates and public transportation. However, there are also problems such as uneven display in electronic paper. Therefore, how to improve the problem of uneven display in electronic paper has become a key issue for those skilled in the art. Summary of the Invention
[0003] In view of this, this application provides a display panel and a display device, and the solutions are as follows:
[0004] A display panel, characterized by comprising:
[0005] A first substrate and a second substrate arranged opposite to each other;
[0006] At least one preset area located between the first substrate and the second substrate, the preset area including a plurality of accommodating structures;
[0007] Electrophoretic liquid, the electrophoretic liquid being located in the accommodating structure;
[0008] The preset area includes a plurality of first retaining walls arranged in a first direction and a plurality of second retaining walls arranged in a second direction, the first direction and the second direction intersect, the first retaining walls and the second retaining walls intersect, and the first retaining walls and the second retaining walls enclose the accommodating structure;
[0009] Wherein, the preset area includes a first area and at least a part of a second area surrounding the first area, the second area includes at least one target position, the target position is located at the edge of the second area away from the first area, and the distance between the target position and the center of the first area is not less than a preset value;
[0010] Based on the target position, the second area further includes a first passage, the target position is located at one end of the first passage, and the other end of the first passage is located at the edge of the second area close to the first area;
[0011] At least one of the first retaining walls and the second retaining walls located on the first passage has a first opening, and the accommodating structures located on the first passage communicate through the first opening.
[0012] Compared with the related art, the beneficial effects of the technical solutions of this application are as follows:
[0013] The display panel includes: a first substrate and a second substrate which are oppositely arranged, at least one preset area located between the first substrate and the second substrate. The preset area includes a plurality of first partition walls arranged along a first direction and a plurality of second partition walls arranged along a second direction. The first partition walls and the second partition walls intersect to enclose a containing structure, and the electrophoretic solution is located in the containing structure. Among them, the preset area includes a first area and at least a part of a second area surrounding the first area. The second area includes at least one target position located at its edge and the distance from the center of the first area is not less than a preset value. The second area also includes a first passage. The target position is located at one end of the first passage, and the other end is located at the edge of the second area close to the first area. The containing structure located on the first passage is communicated through a first opening of the first partition wall and / or the second partition wall. Thus, it can be seen that the electrophoretic solution dripping into the first area can diffuse to the target position through the first passage, greatly reducing the resistance when the electrophoretic solution diffuses to the target position, effectively assisting the electrophoretic solution to diffuse to the target position, and further effectively avoiding the diffusion cavity of the electrophoretic solution. In addition, the display panel includes a first passage that helps the electrophoretic solution to diffuse to the target position, so there is no need to increase the dropping amount of the electrophoretic solution, thus not causing problems such as an increase in cell thickness and a slow response speed. Description of the Drawings
[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.
[0015] The structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limiting conditions that the present application can be implemented. Therefore, they do not have a substantial technical meaning. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present application can produce and the purposes that can be achieved, should still fall within the scope that the technical content disclosed in the present application can cover.
[0016] Figure 1 It is a schematic diagram of the diffusion of the electrophoretic solution;
[0017] Figure 2 It is a schematic structural diagram of a display panel provided by the present application;
[0018] Figure 3 For Figure 2 A cross-sectional view along AA1;
[0019] Figure 4Schematic diagram of the electrophoresis liquid diffusion path in a display panel provided by this application;
[0020] Figure 5 Another schematic diagram of the electrophoresis liquid diffusion path in a display panel provided by this application;
[0021] Figure 6 and Figure 7 Schematic diagram of the structure of the first path;
[0022] Figure 8 Schematic diagram of the structure of a preset area of a display panel provided by this application;
[0023] Figure 9 is Figure 8 Cross-sectional view along BB1;
[0024] Figure 10 Another schematic diagram of the structure of a preset area of a display panel provided by this application;
[0025] Figure 11 and Figure 12 is Figure 8 Cross-sectional view along CC1;
[0026] Figure 13 Schematic diagram of the structure of a support column in a display panel provided by this application;
[0027] Figure 14 Another schematic diagram of the structure of a support column in a display panel provided by this application;
[0028] Figure 15 Another schematic diagram of the structure of a display panel provided by this application;
[0029] Figure 16 is Figure 15 Schematic diagram of the structure of the first electrode layer in the display panel shown;
[0030] Figure 17 Another schematic diagram of the structure of a display panel provided by this application;
[0031] Figure 18 is Figure 17 Schematic diagram of the structure of the second auxiliary layer in the display panel shown;
[0032] Figure 19 Schematic diagram of the structure of a display device provided by this application. Detailed implementation manners
[0033] The embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts belong to the scope of protection of the present application.
[0034] To make the above objects, features, and advantages of the present application more obvious and understandable, the present application will be further described in detail below in conjunction with the drawings and specific embodiments.
[0035] As described in the background art section, there are problems such as uneven display in electronic paper, and an important factor leading to uneven display of electronic paper is the distribution of electrophoretic fluid. Because in the preparation process of electronic paper, the electrophoretic fluid needs to be dropped on certain areas, and then, through the diffusion of the electrophoretic fluid, the electrophoretic fluid covers all areas of the display panel. Specifically, as Figure 1 shown, after the electrophoretic fluid drops, it usually diffuses outward with the position of the droplet of the electrophoretic fluid as the center. However, during the diffusion process, the farther away from the dropping position of the electrophoretic fluid, the more difficult the diffusion is, or rather, the farther away from the dropping position, the slower the diffusion speed until it stops, resulting in some areas where there may be no electrophoretic fluid, leading to diffusion holes of the electrophoretic fluid, and further leading to uneven display. In the prior art, in order to avoid the above problems, more electrophoretic fluid will be dropped, but this method will cause problems such as excessive thickness and slow response speed, so it is not a better means to solve the above problems.
[0036] Based on the above, the present application provides a display panel, as Figure 2 and Figure 3 shown, Figure 2 is a cross-sectional view of a display panel provided by the present application, Figure 3 is a top view of a preset area. The display panel includes: a first substrate 100 and a second substrate 200 arranged opposite to each other, at least one preset area 300 located between the first substrate 100 and the second substrate 200, and the preset area 300 includes a plurality of containing structures 400. The display panel further includes an electrophoretic fluid, and the electrophoretic fluid is located in the above-mentioned containing structures 400, that is, the above-mentioned containing structures 400 are structures for containing the electrophoretic fluid and are used to contain the electrophoretic fluid. It should be noted that the number of the above-mentioned preset areas 300 can be determined based on the size and shape of the display panel, and when there are multiple preset areas 300, the shapes of the preset areas 300 can be the same or different.
[0037] As Figure 3As shown, the preset area 300 includes a plurality of first retaining walls 402 arranged along a first direction and a plurality of second retaining walls 404 arranged along a second direction. The first direction and the second direction intersect, the first retaining wall 402 and the second retaining wall 404 intersect, and the first retaining wall 402 and the second retaining wall 404 enclose a containing structure 400. That is, the containing structure 400 in the above-mentioned preset area 300 is enclosed by the intersecting first retaining wall 402 and second retaining wall 404. For example, in a specific embodiment of the present application, as Figure 3 shown, the first direction and the second direction may be perpendicular to each other. A plurality of first retaining walls 402 may be arranged along the first direction, and the first retaining wall 402 may extend along the second direction. A plurality of second retaining walls 404 may be arranged along the second direction, and the second retaining wall 404 may extend along the first direction. That is, the preset area 300 may include the first retaining wall 402 and the second retaining wall 404 arranged in an array. Specifically, the first retaining wall 402 may be arranged in multiple rows, the second retaining wall 404 may be arranged in multiple columns, and the first retaining wall 402 and the second retaining wall 404 intersect. Furthermore, the above-mentioned containing structure 400 may be a rectangular containing structure enclosed by the first retaining wall 402 and the second retaining wall 404.
[0038] Among them, the preset area 300 includes a first area 302 and a second area 304 surrounding at least a part of the first area 302. That is, the second area 304 may surround all areas of the outer periphery of the first area 302, or may surround a part of the outer periphery of the first area 302. That is to say, all of the outer periphery of the first area 302 may be covered by the second area 304, or a part of the outer periphery of the first area 302 may be covered by the second area 304. The second area 304 includes at least one target position 306. The target position 306 may be located at the edge of the second area 304 away from the first area 302, and the distance from the center of the first area 302 is not less than a preset value.
[0039] As Figure 4 shown, Figure 4 is a schematic structural diagram of the electrophoresis liquid diffusion path in the second area 304. Based on the above-mentioned target position 306, the second area 304 further includes a first path 1. The target position 306 is located at one end of the first path 1, and the other end of the first path 1 is located at the edge of the second area 304 close to the first area 302. That is to say, the target position 306 is located on the side of the first path 1 away from the first area 302. That is, the first path 1 may extend from the target position 306 to the junction of the second area 304 and the first area 302. It should be noted that Figures 1 - 4For the subsequent diagrams, a rectangular display panel is taken as an example, and the preset area 300 is also rectangular. The target position 306 can be the four vertices of the rectangle formed by the preset area 300. However, the present application does not limit the shapes of the display panel and the preset area 300. The target position 306 is determined based on the shape of the preset area 300. As long as the distance between a certain edge position of the second area 304 and the center of the preset area 302 is greater than a preset value, it can be regarded as the target position 306.
[0040] At least one of the first retaining wall 402 and the second retaining wall 404 located on the first passage 1 has a first opening 12, and the accommodating structure 400 located on the first passage 1 communicates through the first opening 12. That is to say, the accommodating structure 400 located on the first passage 1 can have an opening due to the first opening 12 of at least one of the first retaining wall 402 and the second retaining wall 404, and communicate through this opening. As Figure 4 shown, at least one of the first retaining wall 402 and the second retaining wall 404 on the first passage 1 has a first opening 12, which can be that both the first retaining wall 402 and the second retaining wall 404 on the first passage 1 have a first opening 12. However, the present application does not limit this. In other embodiments of the present application, it can be that only the first retaining wall 402 has a first opening 12, or only the second retaining wall 404 has a first opening 12, as long as the accommodating structure 400 located on the same passage 1 can communicate through the first opening 12. It should be noted that when both the first retaining wall 402 and the second retaining wall 404 have a first opening 12, the first openings 12 of the two together form an opening on the accommodating structure 400. It should be noted that Figure 4 only one first passage 1 and one first opening 12 are shown in the figure. However, taking a rectangular display panel as an example, there should be 4 target positions 306. Correspondingly, there should be 4 first passages 1, and both the first retaining wall 402 and the second retaining wall 404 have first openings 12. However, for the sake of simplicity of the diagram, Figure 4 not all are shown in the figure, but it should be understood and will not be elaborated here.
[0041] As can be seen from the above, the first passage 1 is obtained based on the target position 306 in the second region 304. The target position 306 is located at the edge of the second region 304 away from the first region 302, and the distance between the target position 306 and the center of the first region 302 is greater than a preset value. The first passage 1 extends from the target position 306 towards the first region to the intersection of the second region 304 and the first region 302. That is to say, the first passage 1 can extend from the edge position of the second region 304 far from the first region 302 to the first region. Also, since at least one of the first retaining wall 402 and the second retaining wall 404 of the accommodating structure 400 on the first passage 1 has a first opening, the accommodating structure 400 on the first passage 1 can be connected. Therefore, the target position 306 in the second region 304 can be connected to the first region 302 through the first passage 1. Based on this, when filling the electrophoresis liquid into the accommodating structure 400 in the preset region 300, the electrophoresis liquid can be dropped onto the first region 302, and then the electrophoresis liquid dropped onto the first region 302 diffuses towards the second region 304 to achieve the purpose of covering all parts of the preset region 300 with the electrophoresis liquid.
[0042] During the diffusion process of the electrophoresis liquid, since the target position 306 and the first region 302 can be connected through the first passage 1, and at least one of the first retaining wall 402 and the second retaining wall 404 of the accommodating structure 400 constituting the first passage 1 has a first opening 12, so that the accommodating structure 400 on the first passage 1 can be connected. Therefore, during the diffusion of the electrophoresis liquid to the target position 306, the electrophoresis liquid can diffuse to the target position 306 through the first passage 1. Compared with the prior art, the electrophoresis liquid does not need to overcome multiple obstacles of the accommodating structures on its diffusion path to diffuse to the target position 306, but can diffuse to the target position 306 through the openings of the accommodating structure 400 on the diffusion path, greatly reducing the resistance when the electrophoresis liquid diffuses to the target position 306, effectively assisting the diffusion of the electrophoresis liquid to the target position 306, and thus effectively avoiding the diffusion holes of the electrophoresis liquid. Moreover, the display panel includes the first passage 1 that helps the electrophoresis liquid diffuse to the target position 306. Therefore, compared with what is described in the background art part, by increasing the dropping amount of the electrophoresis liquid to solve the diffusion holes of the electrophoresis liquid, it will not cause problems such as an increase in the cell thickness and a slow response speed, and has strong practical value.
[0043] It should be noted that the preset value of the distance between the above-mentioned target position 306 and the center of the first region 302 can represent the maximum diffusion distance during the diffusion of the electrophoresis liquid dropped onto the first region 302 towards the second region 304. The specific value can be set according to the situation, and the present application does not limit this.
[0044] In an embodiment of the present application, as Figure 4As shown, the first path 1 can be a straight path pointing from the target position 306 to the first area 302, which can make the first path 1 the shortest, that is, the distance between the target position 306 and the first area 302 is the shortest, so that the diffusion path of the electrophoresis solution to the target position 306 is the shortest, which helps the electrophoresis solution to diffuse to the target position 306 and inhibits the diffusion cavity problem of the electrophoresis solution.
[0045] It should be noted that according to the setting requirements of the display panel, etc., the above-mentioned first path 1 can also be a non-straight path, such as an S-shaped path, etc. The present application does not limit this, and it depends on the specific situation.
[0046] In an embodiment of the present application, as Figure 5 shown, Figure 5 is a schematic structural diagram of the diffusion path of the electrophoresis solution in the second area 304. The second area 304 further includes a second path 2. The second path 1 is connected to the second path 2, and the second path 2 intersects the first path 1.
[0047] Among them, at least one of the first retaining wall 402 and the second retaining wall 404 located on the second path 2 has a second opening 22, and the accommodating structure 400 located on the second path 2 is connected through the second opening 22. It can be seen that the diffusion path of the electrophoresis solution further includes a second path 2 connected to the first path 1, thereby increasing the number of diffusion paths of the electrophoresis solution, so that the electrophoresis solution can also diffuse through the second path 2, and then the electrophoresis solution can diffuse to more areas in the second area 304, which can help the electrophoresis solution to diffuse in the second area 304 to inhibit the diffusion cavity problem of the electrophoresis solution in the second area 304. It should be noted that Figure 5 only one second path 2 is shown in the figure, but the present application does not limit this. The second area 304 may include one second path 2 or multiple second paths 2 connected to each first path 1, depending on the specific situation.
[0048] Based on the above, in an embodiment of the present application, as Figure 5 shown, the above-mentioned second path 2 can extend from the intersection with the first path 1 in the direction away from the first area 302 of the second area 304, so that the electrophoresis solution can diffuse to more positions at the edge of the second area 304 through more diffusion paths extending to the edge of the second area 304 away from the first area 302, which can help the electrophoresis solution to diffuse to the edge of the second area 304 on the side away from the first area 302 to inhibit the diffusion cavity problem of the electrophoresis solution in the second area 304. It should be noted that the same as the first path 1, the second path 2 can be a straight path or a non-straight path, depending on the specific situation.
[0049] In an embodiment of the present application, asFigure 6 As shown Figure 6 is a schematic structural diagram of the first channel 1. Along the third direction, the width of the first end D1 of the first channel 1 is the first width W1, and the width of the second end D2 of the first channel 1 is the second width W2. The first end D1 of the first channel 1 is the end close to the first region 302, and the second end of the second channel 2 is the end far from the first region 302. The third direction is parallel to the plane of the display panel and perpendicular to the direction from the first end D1 of the first channel 1 to the second end, that is, the third direction is parallel to the plane of the display panel and perpendicular to the direction from the first region 302 to the target position 306. For example, the direction from the center of the first region 302 to the target position 306, that is, the third direction is perpendicular to the extension direction of the first channel 1, which can characterize the width of the first channel 1.
[0050] In addition to the above at both ends of the first channel 1, along the third direction, the width of the first channel 1 is the third width W3. Among them, the second width W2 is greater than the third width W3, and the third width W3 is greater than the first width (as Figure 7 shown), or the first width W1, the second width W2, and the third width W3 are equal (as Figure 6 shown), that is, along the extension path of the first channel 1 and in the direction away from the first region 302 of the second region 304, the width of the first channel 1 can become larger, or the widths of each part of the first channel 1 are the same.
[0051] It should be noted that if the widths of each part of the first channel 1 are the same, the manufacturing difficulty of the first channel 1 can be reduced, and then the manufacturing difficulty of the display panel can be reduced. If the width of the first channel 1 becomes larger along its extension path and in the direction away from the first region 302 of the second region 304, then the closer the first channel 1 is to the edge of the second region 304 far from the first region 302, the larger the width, so that the resistance during the diffusion of the electrophoresis liquid along the first channel 1 can be reduced, and then it is helpful for the diffusion of the electrophoresis liquid along the first channel 1.
[0052] In an embodiment of the present application, as Figure 7 shown Figure 7 is a schematic structural diagram of the first channel 1. If the width of the first channel 1 becomes larger along its extension path and in the direction away from the first region 302 of the second region 304, then the above-mentioned third width W3 can gradually become larger in the direction pointing to the target position 306, that is, except at both ends of the first channel 1, the third width of the first channel 1 can change in a gradually increasing manner in the direction pointing to the target position 306, so that the manufacturing difficulty of the first channel 1 can be reduced, and then the manufacturing difficulty of the display panel can be reduced. It should be noted that the width design method of the second channel 2 can also adopt the width design method of the first channel 1 described in this embodiment, which will not be elaborated here. It should be noted thatFigure 7 Only the case where the width of a single first passage 1 gradually increases is taken as an example, but the present application does not limit this, and the widths of multiple or all of the first passages 1 may also gradually increase.
[0053] In an embodiment of the present application, as Figure 8 shown, Figure 8 FIG. is a schematic structural diagram of a preset area 300. Based on at least one target position 306, the second area 304 includes at least one sub-area 308. The target positions 306 and the sub-areas 308 are in one-to-one correspondence, and the first passage 1 is located in the sub-area 308, that is, the target position 306 and the first passage 1 extending from the target position 306 towards the first area 302 are both located in the sub-area 308.
[0054] As Figure 9 shown, Figure 9 is Figure 8 a cross-sectional view along BB1. In at least one sub-area 308, the height of at least one first retaining wall 402 close to the first end D1 of the first passage 1 is greater than the height of at least one first retaining wall 402 close to the second end D2 of the first passage 1, and / or, the height of at least one second retaining wall 404 close to the first end D1 of the first passage 1 is greater than the height of at least one second retaining wall 404 close to the second end D2 of the first passage 1. That is, among the multiple first retaining walls 402 and second retaining walls 404 in the sub-area 308, the closer the first retaining wall 402 is to the first area, the higher its height can be, and the farther the first retaining wall 402 is from the first area 302, the lower its height can be. Similarly, the closer the second retaining wall 404 is to the first area, the higher its height can be, and the farther the second retaining wall 404 is from the first area 302, the lower its height can be. Among them, the first end D1 of the first passage 1 is the end close to the first area 302, the second end D2 of the first passage 1 is the end far from the first area 302, and the height of the first retaining wall 402 is the height perpendicular to the plane of the displayed panel, and the height of the second retaining wall 404 is the height perpendicular to the plane of the display panel.
[0055] As can be seen from the above, in the sub-areas 308 divided based on the target positions 306, the closer the first retaining wall 402 is to the first area, the higher its height can be, and the farther the first retaining wall 402 is from the first area 302, the lower its height can be. Similarly, the closer the second retaining wall 404 is to the first area, the higher its height can be, and the farther the second retaining wall 404 is from the first area 302, the lower its height can be. Thus, when the dripping electrophoresis liquid diffuses in the second area 304, when it diffuses in the direction away from the first area 302, it can have a tendency to diffuse from a high place to a low place, reducing the resistance of the electrophoresis liquid to diffuse in the second area 304, contributing to the diffusion of the electrophoresis liquid in the second area 304, and further suppressing the problem of voids in the diffusion of the electrophoresis liquid.
[0056] Based on the above, in a specific embodiment of the present application, as Figure 9 shown, in the above-mentioned sub-region 308, along the direction from the first end D1 of the first passage 1 to the second end, that is, along the direction away from the first region 302, the heights of the first retaining wall 402 and the second retaining wall 404 can gradually decrease.
[0057] In an embodiment of the present application, the sum of the areas of the at least one sub-region 308 is less than or equal to the area of the second region 304, where the area of the sub-region 308 is the area of the orthographic projection on the plane where the display panel is located, and the area of the second region 304 is the area of the orthographic projection on the plane where the display panel is located. That is to say, a partial region of the second region 304 can be divided into at least one sub-region 308 based on the target position 306 (as Figure 8 shown), or, the entire region of the second region 304 can be divided into at least one sub-region 308 by the target position 306 (as Figure 10 shown). Thus, it can be seen that the heights of some of the first retaining walls 402 and the second retaining walls 404 in the second region 304 change along the direction from the first end D1 of the first passage 1 to the second end, or the heights of all the first retaining walls 402 and the second retaining walls 404 change along the direction from the first end D1 of the first passage 1 to the second end. That is, the heights of some of the first retaining walls 402 and the second retaining walls 404 in the second region 304 can be designed, or the heights of all the first retaining walls 402 and the second retaining walls 404 in the second region 304 can be designed, so as to be applicable to more application scenarios.
[0058] In an embodiment of the present application, as Figure 11 shown, Figure 11 is Figure 8 a cross-sectional view along CC1. In the first region 302, the heights of the first retaining walls 402 are the same, the heights of the second retaining walls 404 are the same, and the heights of the first retaining walls 402 and the second retaining walls 404 are the same. In another embodiment of the present application, as Figure 12 shown, Figure 12 is Figure 8 a cross-sectional view along CC1. In the first region 302, along the direction from the center of the first region 302 to its edge, the height of at least one first retaining wall 402 away from the center of the first region 302 is less than the height of at least one first retaining wall 402 close to the center of the first region 302, and / or, the height of at least one second retaining wall 404 away from the center of the first region 302 is less than the height of at least one second retaining wall 404 close to the center of the first region 302, so that at least one of the first retaining walls 402 and the second retaining walls 404 in the first region 302 can become lower in height along the direction from the center of the first region 302 to the edge. For example Figure 12As shown, the height of the first retaining wall 402 in the first area 302 gradually decreases, and the height of the second retaining wall 404 in the first area 302 gradually decreases. The height of the first retaining wall 402 is perpendicular to the plane where the display panel is located, and the height of the second retaining wall 404 is perpendicular to the plane where the display panel is located.
[0059] As can be seen from the above, the retaining walls in the first region 302 can have the same or different heights. Specifically, if the heights are different, they can gradually decrease in height as they move toward the second region 304. If the retaining walls (first retaining wall 402 and second retaining wall 404) in the first region 302 have the same height, the first retaining walls 402 and second retaining walls 404 can be formed in the same process step during the fabrication of the retaining walls in the first region 302. This reduces the difficulty in fabricating the first retaining walls 402 and second retaining walls 404 in the first region 302, thereby reducing the difficulty in fabricating the display panel. Furthermore, when the retaining walls in the first region 302 gradually decrease in height as they move toward the second region 304, the electrophoretic fluid can diffuse from higher to lower locations in the first region 302, facilitating diffusion of the electrophoretic fluid from the center toward the edges of the first region 302, thereby facilitating diffusion of the electrophoretic fluid within the first region 302. Furthermore, since the second region 304 is located in a direction away from the first region 302, that is, the second region 304 is located in a direction away from the center of the first region 302, the height of each retaining wall in the first region 302 gradually decreases in the direction toward the second region 304, which helps the electrophoretic liquid to diffuse from the center to the edge of the first region 302, and can also promote the diffusion of the electrophoretic liquid in the first region 302 to the second region 304, that is, it can promote the diffusion of the electrophoretic liquid in the preset area 300, and effectively suppress the diffusion cavity problem of the electrophoretic liquid.
[0060] In one embodiment of the present application, Figure 13 As shown, Figure 13 This is a schematic structural diagram of a support column 500 in a display panel provided in the present application. The display panel also includes a support column 500, a first retaining wall 402 and a second retaining wall 404 are provided on one of the first substrate 100 and the second substrate 200, and the support column 500 is located between the first retaining wall 402 and the second retaining wall 404 and the opposite substrate, that is, the support column 500 is located on the side of the first retaining wall 402 and the second retaining wall 404 that is away from the substrate on which it is located. For example, if the first retaining wall 402 and the second retaining wall 404 are provided on the first substrate 100, then the support column 500 is located on the side of the first retaining wall 402 and the second retaining wall 404 that is away from the first substrate 100. Conversely, the support column 500 is located on the side of the first retaining wall 402 and the second retaining wall 404 that is away from the second substrate 200. It should be noted that for the sake of simplicity of the diagram, Figure 13 The first path 1 is not shown in FIG, but it should be understood thatFigure 13 The display panel shown includes a first passage 1.
[0061] Whether the support column 500 is located between the retaining wall and the first substrate 100 or between the retaining wall and the second substrate 200, the orthographic projection of the support column 500 on the plane where the display panel is located covers the orthographic projection of the intersection of the first retaining wall 402 and the second retaining wall 404 on the plane where the display panel is located, and also overlaps a part of the orthographic projection of the accommodating structure 400 on the display panel. That is to say, the support column 500 can be located at the junction of the first retaining wall 402 and the second retaining wall 404, and a part of it extends to the accommodating structure 400, so that the support column 500 can structurally support the display panel and will not block the accommodating structure 400 at the same time.
[0062] The support column 500 includes a first support column 502 and a second support column 504. The first support column 502 is located in the first region 302, and the second support column 504 is located in the second region 304 to structurally support the first region 302 and the second region 304 of the display panel.
[0063] In an embodiment of the present application, as Figure 13 shown, based on at least one target position 306, the second region 304 includes at least one sub-region 308. The target position 306 corresponds to the sub-region 308 one by one, and the first passage 1 is located in the sub-region 308. The orthographic projection of the second support column 504 located in the sub-region 308 on the plane where the display panel is located has a dimension in the direction from the first end D1 of the first passage 1 to the second end greater than the dimension in the third direction. Wherein, the first end D1 of the first passage 1 is the end close to the first region 302, the second end D2 of the first passage 1 is the end far from the first region 302, the third direction is parallel to the plane where the display panel is located and perpendicular to the direction from the first end D1 of the first passage 1 to the second end, that is, the orthographic projection of the second support column 504 on the display panel is narrower along the extension direction of the first passage 1 and wider along the direction perpendicular to the extension direction of the first passage 1. That is to say, the orthographic projection of the second support column 504 on the display panel is elongated along the extension direction of the first passage 1, or the cross-sectional shape of the second support column 504 is elongated along the extension direction of the first passage 1, such as an ellipse (also called a streamline shape). The long diameter of the ellipse is parallel to the extension direction of the first passage 1, and the short diameter is perpendicular to the extension direction of the first passage 1, which can reduce the resistance of the second support column 504 to the diffusion of the electrophoresis solution along the first passage 1, can help the electrophoresis solution to diffuse along the first passage 1 to the target position 306, and can effectively inhibit the diffusion cavity problem of the electrophoresis solution.
[0064] In an embodiment of the present application, the sum of the areas of at least one sub-region 308 is less than or equal to the area of the second region 304. Wherein, if the sum of the areas of at least one sub-region 308 is less than the area of the second region 304, as Figure 14 shown, Figure 14 is a schematic structural diagram of the support pillar 500 in a display panel provided by the present application. In the region of the second region 304 other than at least one sub-region 308, the size of the positive projection of the second support pillar 504 in the plane of the display panel along the direction away from the first region 302 of the second region 304 is smaller than the size along the fourth direction. The fourth direction is parallel to the plane of the display panel and perpendicular to the direction away from the first region 302 of the second region 304.
[0065] As can be seen from the above, if the second region 304 includes a region other than the sub-region 308, then the second support pillar 504 in the region other than the sub-region 308 has a wider positive projection or cross-sectional shape in the display panel along the direction away from the first region 302 of the second region 304, and is narrower along the fourth direction. That is, the second support pillar 504 can also be an ellipse or streamline shape with the long diameter parallel to the direction away from the first region 302 of the second region 304 and the short diameter parallel to the fourth direction, which can help the diffusion of the electrophoresis solution and thus inhibit the diffusion cavity problem of the electrophoresis solution.
[0066] In an embodiment of the present application, as Figure 14 shown, the size of the positive projection of the first support pillar 502 located in the first region 302 in the plane of the display panel along the direction from the center of the first region 302 to its edge is smaller than the size along the fifth direction. The fifth direction is parallel to the plane of the display panel and perpendicular to the direction from the center of the first region 302 to its edge. That is to say, the projection shape of the first support pillar 502 located in the first region 302 can also be an ellipse or streamline shape with the long diameter parallel to the direction from the center of the first region 302 to its edge and the short diameter parallel to the fifth direction, which can help the diffusion of the electrophoresis solution and thus inhibit the diffusion cavity problem of the electrophoresis solution.
[0067] In an embodiment of the present application, as Figure 15 shown, Figure 15 is a schematic structural diagram of a display panel provided by the present application. The display panel further includes a first electrode layer 102 on the side of the first substrate 100 facing the second substrate 200, and a second electrode layer 202 on the side of the second substrate 200 facing the first substrate 100. The first substrate 100 is located on the display side of the display panel, the second substrate 200 is located on the non-display side of the display panel, and there is a first auxiliary layer 104 between the first electrode layer 102 and the first substrate 100, and the first auxiliary layer 104 covers the first electrode layer 102.
[0068] Among them, as Figure 16 shown, Figure 16 is a schematic structural diagram of the first electrode layer 102. The first electrode layer 102 includes a third opening 106. The orthographic projection of the third opening 106 on the plane where the display panel is located covers the orthographic projection of the first path 1 on the plane where the display panel is located. A part of the first auxiliary layer 104 is exposed in the third opening 106. Among them, the part of the first auxiliary layer 104 exposed in the third opening 106 can assist the electrophoresis liquid to diffuse along the first path 1, so as to further reduce the resistance of the electrophoresis liquid to diffuse along the first path 1, which helps the electrophoresis liquid to diffuse along the first path 1 to the target position 306 and inhibits the problem of electrophoresis liquid diffusion cavities.
[0069] In another embodiment of the present application, as Figure 17 shown, Figure 17 is a schematic structural diagram of a display panel provided by the present application. The display panel further includes a first electrode layer 102 located on the side of the first substrate 100 facing the second substrate 200, and a second electrode layer 202 located on the side of the second substrate 200 facing the first substrate 100. The first substrate 100 is located on the display side of the display panel, the second substrate 200 is located on the non-display side of the display panel, and the side of the first electrode layer 102 facing the second substrate 200 has a second auxiliary layer 108.
[0070] Among them, as Figure 18 shown, Figure 18 is a schematic structural diagram of the second auxiliary layer 108. The second auxiliary layer 108 includes at least one auxiliary part 110. The auxiliary parts 110 correspond to the first paths 1 one by one, and the orthographic projection of the auxiliary parts 110 on the plane where the display panel is located covers the orthographic projection of the first paths 1 on the plane where the display panel is located. Each auxiliary part 110 of the second auxiliary layer 108 can assist the electrophoresis liquid to diffuse along the corresponding first path 1, which helps the electrophoresis liquid to diffuse along the first path 1 to the target position 306 and inhibits the problem of electrophoresis liquid diffusion cavities.
[0071] In an embodiment of the present application, the above-mentioned first auxiliary layer 104 and second auxiliary layer 108 can be lipophilic layers, and their materials can be graphene, etc., so that the first auxiliary layer 104 and the second auxiliary layer 108 can assist the electrophoresis liquid to diffuse along the first path 1 to the target position 306.
[0072] Based on the display panel described in any of the above embodiments, the present application further provides a display device, as Figure 19 shown, Figure 19 is a schematic structural diagram of a display device provided by the present application. The display device 01 includes the display panel 001 described in any of the above embodiments. The display device can be an electronic paper, or a display device including an electronic paper, etc.
[0073] In this specification, the various embodiments are described in a progressive, or parallel, or a combination of progressive and parallel manners. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple. For the relevant parts, reference can be made to the description in the method section.
[0074] It should be noted that in the description of this application, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to this application. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be intermediate components present.
[0075] It should also be noted that in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that an article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of another identical element in the article or device comprising the above element.
[0076] The above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.
Claims
1. A display panel, characterized in that, Comprising: A first substrate and a second substrate which are oppositely arranged; At least one preset region located between the first substrate and the second substrate, the preset region including a plurality of accommodating structures; An electrophoresis liquid, the electrophoresis liquid being located in the accommodating structures; The preset region includes a plurality of first barriers arranged along a first direction and a plurality of second barriers arranged along a second direction, the first direction and the second direction intersect, the first barriers and the second barriers intersect, and the first barriers and the second barriers enclose the accommodating structures; Wherein, the preset region includes a first region and at least a part of a second region surrounding the first region, the second region includes at least one target position, the target position is located at the edge of the second region far from the first region, and the distance between the target position and the center of the first region is not less than a preset value; Based on the target position, the second region further includes a first passage, the target position is located at one end of the first passage, and the other end of the first passage is located at the edge of the second region close to the first region; At least one of the first barriers and the second barriers located on the first passage has a first opening, and the accommodating structures located on the first passage communicate through the first opening.
2. The display panel according to claim 1, wherein The first passage is a straight passage pointing from the target position to the first region.
3. The display panel according to claim 1, wherein The second region further includes a second passage, the second passage is connected to the first passage, and the second passage intersects with the first passage; At least one of the first barriers and the second barriers located on the second passage has a second opening, and the accommodating structures located on the second passage communicate through the second opening.
4. The display panel according to claim 1, wherein Along a third direction, the width of the first end of the first passage is a first width, and the width of the second end of the first passage is a second width; the first end of the first passage is the end close to the first region, the second end of the second passage is the end far from the first region, the third direction is parallel to the plane where the display panel is located, and is perpendicular to the direction from the first end to the second end of the first passage; Except for the two ends of the first passage, along the third direction, the width of the first passage is a third width; Wherein, the second width is greater than the third width, and the third width is greater than the first width; or The first width, the second width, and the third width are equal.
5. The display panel according to claim 1, characterized in that, Based on the at least one target position, the second region includes at least one sub-region, the target position corresponds to the sub-region one by one, and the first passage is located in the sub-region; In at least one of the at least one sub-regions, the height of at least one of the first barriers close to the first end is greater than the height of at least one of the first barriers close to the second end, and / or, the height of at least one of the second barriers close to the first end is greater than the height of at least one of the second barriers close to the second end; Wherein, the first end of the first path is the end close to the first region, the second end of the second path is the end far from the first region, the height of the first retaining wall is the height perpendicular to the plane where the display panel is located, and the height of the second retaining wall is the height perpendicular to the plane where the display panel is located.
6. The display panel according to claim 5, characterized in that, The sum of the areas of the at least one sub-region is less than or equal to the area of the second region; Wherein, the area of the sub-region is the area of the orthographic projection on the plane where the display panel is located, and the area of the second region is the area of the orthographic projection on the plane where the display panel is located.
7. The display panel according to claim 1, wherein Along the direction from the center of the first region to its edge, the height of at least one of the first retaining walls far from the center of the first region is less than the height of at least one of the first retaining walls close to the center of the first region, and / or, the height of at least one of the second retaining walls far from the center of the first region is less than the height of at least one of the second retaining walls close to the center of the first region; or In the first region, the heights of the first retaining walls are the same, the heights of the second retaining walls are the same, and the heights of the first retaining walls and the second retaining walls are the same; Wherein, the height of the first retaining wall is the height perpendicular to the plane where the display panel is located, and the height of the second retaining wall is the height perpendicular to the plane where the display panel is located.
8. The display panel according to claim 1, wherein It further includes support columns. The first retaining wall and the second retaining wall are disposed on one of the first substrate and the second substrate. The support columns are located between the first retaining wall and the second retaining wall and the opposite substrate, and the orthographic projection of the support columns on the plane where the display panel is located covers the orthographic projection of the intersection of the first retaining wall and the second retaining wall on the plane where the display panel is located, and also overlaps with a part of the orthographic projection of the accommodating structure on the plane where the display is located; The support columns include a first support column and a second support column. The first support column is located in the first region, and the second support column is located in the second region.
9. The display panel according to claim 8, characterized in that Based on the at least one target position, the second region includes at least one sub-region, the target position corresponds to the sub-region one by one, and the first path is located in the sub-region; The dimension of the orthographic projection of the second support column located in the sub-region on the plane where the display panel is located along the direction from the first end to the second end of the first path is greater than the dimension along the third direction; Wherein, the first end of the first path is the end close to the first region, the second end of the second path is the end far from the first region, the third direction is parallel to the plane where the display panel is located, and is perpendicular to the direction from the first end to the second end of the first path.
10. The display panel according to claim 8, wherein The sum of the areas of the at least one sub-region is less than or equal to the area of the second region; Wherein, if the sum of the areas of the at least one sub-region is smaller than the area of the second region, in the region of the second region other than the at least one sub-region, the dimension of the positive projection of the second support pillar in the plane of the display panel in the direction in which the second region is away from the first region is greater than the dimension in the fourth direction, the fourth direction being parallel to the plane of the display panel and perpendicular to the direction in which the second region is away from the first region.
11. The display panel according to claim 8, wherein The dimension of the positive projection of the first support pillar located in the first region in the plane of the display panel in the direction from the center of the first region to its edge is greater than the dimension in the fifth direction; The fifth direction is parallel to the plane of the display panel and perpendicular to the direction from the center of the first region to its edge.
12. The display panel according to claim 1, wherein, It further includes a first electrode layer on the side of the first substrate facing the second substrate, and a second electrode layer on the side of the second substrate facing the first substrate; The first substrate is located on the display side of the display panel, the second substrate is located on the non-display side of the display panel, and there is a first auxiliary layer between the first electrode layer and the first substrate, the first auxiliary layer covering the first electrode layer; Wherein, the first electrode layer includes a third opening, the positive projection of the third opening in the plane of the display panel covers the positive projection of the first path in the plane of the display panel, and a part of the first auxiliary layer is exposed in the third opening.
13. The display panel according to claim 1, wherein, It further includes a first electrode layer on the side of the first substrate facing the second substrate, and a second electrode layer on the side of the second substrate facing the first substrate; The first substrate is located on the display side of the display panel, the second substrate is located on the non-display side of the display panel, and the side of the first electrode layer facing the second substrate has a second auxiliary layer; The second auxiliary layer includes at least one auxiliary part, the at least one auxiliary part corresponds to the first path one by one, and the positive projection of the auxiliary part in the plane of the display panel covers the positive projection of the first path in the plane of the display panel.
14. A display device, characterized in that, It includes the display panel according to any one of claims 1-13.