Display panel, preparation method thereof and display device

Abstract

The application provides a display panel, a preparation method thereof and a display device, and solves the problems of poor display hue and poor display uniformity of the display panel in the prior art. The display panel comprises a substrate, a plurality of pixels located on one side of the substrate, a texture layer, a projection of the texture layer on the substrate surrounds a projection of the pixels on the substrate, and a black matrix arranged on one side of the substrate, wherein a projection of the black matrix on the substrate is at least partially located between the projection of the texture layer and the projection of the pixels on the substrate. The pattern of the texture layer is not affected by the display picture of the display panel, which is beneficial to meet the delicate display requirement.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to display panels, their manufacturing methods, and display devices. Background Technology

[0002] Current display devices, such as ambient display devices, have low light transmittance and high reflectivity during the display stage, resulting in poor color hue and low brightness, leading to poor display effects. Furthermore, current ambient display devices are limited to the application scenarios of large icons or control buttons, which cannot meet the needs of fine display and result in poor display uniformity. Summary of the Invention

[0003] In view of this, the present application provides a display panel, a method for manufacturing the same, and a display device, which solves the problems of poor color hue and poor display uniformity in the prior art.

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

[0005] substrate;

[0006] Multiple pixels are located on one side of the substrate;

[0007] The texture layer, whose orthogonal projection onto the substrate surrounds the orthogonal projection of the pixel onto the substrate;

[0008] A black matrix is ​​disposed on one side of the substrate, and the orthographic projection of the black matrix on the substrate is at least partially located between the texture layer and the orthographic projection of the pixel on the substrate.

[0009] In one embodiment, the pixel includes a light-emitting layer, and the distance between the surface of the black matrix away from the substrate and the substrate is greater than or equal to the distance between the surface of the light-emitting layer away from the substrate and the substrate.

[0010] Preferably, the distance between the surface of the black matrix near the substrate and the substrate is greater than or equal to the distance between the surface of the texture layer near the substrate and the substrate.

[0011] In one embodiment, the display panel further includes: an optical adhesive layer located on the side of the texture layer away from the substrate;

[0012] Preferably, the optical adhesive layer contains a light-absorbing material;

[0013] Preferably, the light-absorbing material includes at least one of carbon black, black resin, chromium, and chromium oxide.

[0014] In one embodiment, the texture layer is disposed on the same layer as the pixel, and the distance between the side of the texture layer away from the substrate and the substrate is greater than the distance between the surface of the pixel light-emitting layer and the substrate;

[0015] Preferably, the texture layer is disposed on one side of the substrate, and a plurality of through holes are formed on the texture layer, with at least some pixels located inside the through holes;

[0016] Preferably, the pixel includes a first electrode layer, a light-emitting layer, and a second electrode layer. The first electrode layer is disposed on the side of the texture layer facing the substrate. A through-hole in the texture layer exposes a portion of the first electrode layer. The light-emitting layer is located inside the through-hole and covers the first electrode layer. The second electrode layer covers the light-emitting layer and the texture layer.

[0017] Preferably, the texture layer is disposed on the same layer as the pixel's light-emitting layer and texture layer, with one sidewall of the black matrix in contact with the pixel's light-emitting layer and the other sidewall in contact with one sidewall of the texture layer;

[0018] Preferably, the second electrode layers of adjacent pixels are connected to each other on the side of the texture layer facing away from the substrate;

[0019] Preferably, the texture layer has multiple grooves located near the through holes, and the orthographic projection of the grooves on the substrate surrounds the orthographic projection of the through holes on the substrate, with the black matrix located within the grooves;

[0020] Preferably, the orthographic projection boundary of the groove on the substrate overlaps with the orthographic projection boundary of the through hole on the substrate.

[0021] In one embodiment, the display panel further includes a pixel defining layer located on one side of the substrate, the pixel defining layer having a plurality of pixel openings, some pixels being located within the pixel openings, and a texture layer located on the side of the pixel defining layer facing away from the substrate.

[0022] Multiple vias are formed on the texture layer, and the orthogonal projection of the pixel opening on the substrate is located within the orthogonal projection range of the via on the substrate.

[0023] Preferably, the texture layer and the black matrix are disposed on the same layer, and the texture layer and the black matrix are in contact with the pixel defining layer. The second electrode layer of the pixel extends from the pixel opening to the side of the texture layer and the black matrix away from the substrate. Preferably, the orthographic projection of the texture layer on the substrate is located within the orthographic projection range of the pixel defining layer on the substrate.

[0024] Preferably, the display panel further includes an encapsulation layer, which is located on the side of the second electrode layer of the pixel that is away from the substrate, and a texture layer is located on the side of the encapsulation layer that is away from the substrate.

[0025] Preferably, the pixel delimiting layer is set on the same layer as the black matrix;

[0026] Preferably, the pixel defining layer includes at least a portion of black light-absorbing material, and the orthographic projection of the black light-absorbing material on the substrate surrounds the orthographic projection of the pixel opening on the substrate.

[0027] Preferably, the display panel further includes a color filter layer located on the side of the pixel away from the substrate, wherein the orthographic projection of the color filter layer on the substrate covers the orthographic projection of the pixel on the substrate.

[0028] In one embodiment, the color of the texture layer includes at least one or a combination of at least two of cyan, magenta, yellow, and black;

[0029] Preferably, the texture layer includes multiple layers of sub-texture layers, each of which is a single color;

[0030] Preferably, the multilayer subtexture layers are arranged in a predetermined order in a first direction and a second direction, wherein the first direction is the thickness direction of the substrate and the second direction is the direction parallel to the substrate.

[0031] In one embodiment, the display panel further includes: a cover plate located on the side of the textured layer away from the substrate, the surface of the cover plate away from the substrate including a textured pattern;

[0032] Preferably, the display panel further includes: a tactile layer located on the side of the texture layer away from the substrate, wherein the orthographic projection of the texture layer on the substrate covers the orthographic projection of the tactile layer on the substrate;

[0033] Preferably, the tactile layer has a diffuse reflective surface and / or a specular reflective surface;

[0034] Preferably, the tactile layer includes at least one of leather, wood, fabric, glass, and plastic;

[0035] Preferably, the material of the tactile layer includes at least one of polyethylene terephthalate, acrylonitrile-butadiene-styrene copolymer, polycarbonate, polymethyl methacrylate, and silicone.

[0036] A second aspect of this application provides a method for manufacturing a display panel, comprising:

[0037] A first electrode layer is prepared on one side of the substrate;

[0038] A textured layer is prepared on the side of the first electrode layer away from the substrate, and multiple through holes are formed in the textured layer;

[0039] A black matrix is ​​prepared on the side of the texture layer near the via;

[0040] A light-emitting layer and a second electrode layer are fabricated in the through-hole to obtain multiple pixels.

[0041] In one embodiment, fabricating a textured layer on the side of the first electrode layer away from the substrate includes:

[0042] A textured layer is prepared on the side of the first electrode layer away from the substrate using multilayer printing or multicolor printing.

[0043] Preferably, the texture layer is prepared on the side of the first electrode layer away from the substrate using a multilayer printing method, including:

[0044] Multiple ink layers are sequentially printed on the side of the first electrode layer away from the substrate, with each ink layer being a single color.

[0045] By creating through-holes in each ink layer, a texture layer is obtained;

[0046] Preferably, the texturing layer is prepared on one side of the substrate using a multilayer printing method, including:

[0047] An nth ink layer is prepared on the side of the first electrode layer away from the substrate, and a through hole is opened in the nth ink layer to obtain the nth subtexture layer.

[0048] An (n+1)th ink layer is prepared on the surface of the nth ink layer away from the substrate, and a via is formed in the (n+1)th ink layer to obtain the (n+1)th sub-texture layer, where n is an integer greater than or equal to 1;

[0049] Repeat the above steps until a texture layer is obtained;

[0050] Preferably, the process of preparing the textured layer on the side of the first electrode layer away from the substrate using multi-color printing includes:

[0051] A multi-color ink layer is prepared on the side of the first electrode layer away from the substrate, and through holes are formed in the multi-color ink layer to obtain a textured layer;

[0052] Preferably, the preparation method further includes attaching a cover plate to the side of the textured layer away from the substrate;

[0053] Preferably, before attaching the cover plate to the side of the textured layer away from the substrate, the method further includes pre-treatment of the cover plate, the pre-treatment including:

[0054] The surface of the cover plate is graphicized to obtain a textured pattern;

[0055] Preferably, the surface of the cover plate is patterned, including:

[0056] The surface of the cover plate is patterned by at least one of grinding, stamping and etching.

[0057] A third aspect of this application provides a display device that includes the display panel described above, or a display panel prepared by the preparation method described above.

[0058] In the display panel of this application embodiment, the orthographic projection of the texture layer on the substrate surrounds the orthographic projection of the pixel on the substrate, resulting in a high resolution of the texture layer; the color of the texture layer does not affect the light emission of the pixel, and the light emitted by the pixel does not interfere with the texture layer, resulting in better display uniformity of the display panel; the pattern of the texture layer is not affected by the display screen, which is beneficial for meeting the needs of delicate display; when the display panel of this application embodiment is applied to the integrated display of the environment, the applicable scenarios of the display panel are not limited to large icons or control button icons, but also suitable for scenarios with more delicate display needs, such as animation display or video display. Attached Figure Description

[0059] Figure 1 This is a schematic diagram of the structure of the display panel in one embodiment of this application.

[0060] Figure 2 This is a schematic diagram of the structure of the display panel in another embodiment of this application.

[0061] Figure 3 This is a schematic diagram of the structure of the display panel in another embodiment of this application.

[0062] Figure 4 This is a top view of the structure of the light-emitting layer, black matrix, and texture layer in a display panel according to one embodiment of this application.

[0063] Figure 5 This is a schematic diagram of the structure of the display panel in another embodiment of this application.

[0064] Figure 6 This is a schematic diagram of the structure of the display panel in another embodiment of this application.

[0065] Figure 7 This is a schematic diagram of the structure of the display panel in another embodiment of this application.

[0066] Figure 8 This is a schematic diagram of the structure of the display panel in another embodiment of this application.

[0067] Figure 9 This is a schematic diagram of the structure of the display panel in another embodiment of this application.

[0068] Figure 10 This is a schematic diagram of the structure of the display panel in another embodiment of this application.

[0069] Figure 11 This is a schematic diagram of the structure of the display panel in another embodiment of this application.

[0070] Figure 12 This is a schematic diagram of the structure of the display panel in another embodiment of this application.

[0071] Figure 13 This is a schematic diagram of the process for manufacturing a display panel in one embodiment of this application.

[0072] Figure 14 This is a schematic diagram of the process for manufacturing a display panel in another embodiment of this application. Detailed Implementation

[0073] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0074] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented even without certain specific details. In some instances, methods and means well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0075] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0076] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0077] The first aspect of this application provides a display panel, as shown in the reference... Figure 1 The schematic diagram of the display panel shown includes: a substrate 100; a plurality of pixels 200 located on one side of the substrate 100; a texture layer 300, the orthographic projection of the texture layer 300 on the substrate 100 surrounding the orthographic projection of the pixels 200 on the substrate 100; and a black matrix 400 disposed on one side of the substrate 100, the orthographic projection of the black matrix 400 on the substrate 100 being at least partially located between the texture layer 300 and the orthographic projection of the pixels 200 on the substrate 100.

[0078] In the display panel of this embodiment, the orthographic projection of the texture layer 300 on the substrate 100 surrounds the orthographic projection of the pixel 200 on the substrate 100, resulting in a high resolution for the texture layer 300. The color of the texture layer 300 does not affect the light emission of the pixel 200, and the light emitted by the pixel 200 does not interfere with the texture layer 300, resulting in better display uniformity of the display panel. The pattern of the texture layer 300 is not affected by the display screen, which is beneficial for meeting the needs of detailed display. When the display panel of this embodiment is applied to an integrated environmental display, the applicable scenarios of the display panel are not limited to large icons or control button icons, but are also suitable for scenarios with more detailed display requirements, such as animation display or video display.

[0079] In one embodiment, refer to Figure 2 The texture layer 300 is disposed on the same layer as the pixel 200. The distance between the texture layer 300 and the substrate 100 on the side away from the substrate 100 is greater than the distance between the surface of the light-emitting layer 220 of the pixel 200 and the substrate 100. As a result, the texture layer 300 has a higher resolution; and the texture layer 300 can block crosstalk of light between adjacent pixels 200.

[0080] For example, a texture layer 300 is disposed on one side of the substrate 100, and a plurality of through holes 310 are formed on the texture layer 300, with at least a portion of the pixels 200 located within the through holes 310. Thus, the texture layer 300 is at least partially on the same layer as the pixels 200, resulting in a high resolution for the texture layer 300.

[0081] In one embodiment, refer to Figure 2 and Figure 3 Pixel 200 includes a first electrode layer 210, a light-emitting layer 220, and a second electrode layer 230 stacked sequentially. The first electrode layer 210 is located on the side of texture layer 300 closest to substrate 100. A via 310 of texture layer 300 exposes a portion of the first electrode layer 210. The light-emitting layer 220 is located within the via 310 and covers the first electrode layer 210. The second electrode layer 230 covers both the light-emitting layer 220 and texture layer 300. Therefore, texture layer 300 is on the same layer as pixel 200, resulting in higher resolution for texture layer 300.

[0082] In one embodiment, refer to Figure 3 and Figure 4 The light-emitting layer 220 and texture layer 300 of pixel 200 are set on the same layer. One side wall of the black matrix 400 is in contact with the light-emitting layer 220 of pixel 200, and the other side wall is in contact with one side wall of texture layer 300. As a result, texture layer 300 has a higher resolution; and black matrix 400 and texture layer 300 can block crosstalk between light rays of adjacent pixels 200.

[0083] In one embodiment, the second electrode layers 230 of adjacent pixels 200 are interconnected on the side of the texture layer 300 facing away from the substrate 100. This facilitates the realization of a full-surface cathode.

[0084] In one embodiment, the texture layer 300 has a plurality of grooves 320 disposed near the through-hole 310. The orthographic projection of the grooves 320 on the substrate 100 surrounds the orthographic projection of the through-hole 310 on the substrate 100, and the black matrix 400 is located within the grooves. Thus, the structure of the black matrix 400 and the texture layer 300 cooperates with each other, resulting in a high resolution for the texture layer 300, and the black matrix 400 and the texture layer 300 can block crosstalk of light between adjacent pixels 200.

[0085] In one embodiment, the orthographic projection boundary of the groove 320 on the substrate 100 overlaps with the orthographic projection boundary of the through hole 310 on the substrate 100. This facilitates contact between the black matrix 400 and the pixel 200, and improves the effect of blocking crosstalk between adjacent pixels 200.

[0086] In one embodiment, the distance between the surface of the black matrix 400 away from the substrate 100 and the substrate 100 is greater than or equal to the distance between the surface of the light-emitting layer 220 away from the substrate 100 and the substrate 100. Therefore, the black matrix 400 can effectively block light from the light-emitting layer from entering the texture layer 300, preventing color shift and reducing light interference with the texture layer. This allows the display panel to be suitable for scenarios requiring fine textures and detailed display.

[0087] It is understood that a pixel may further include a first transport layer and a second transport layer, wherein the first transport layer is located between the first electrode layer and the light-emitting layer, and the second transport layer is located between the light-emitting layer and the second electrode. For example, when the first electrode layer is an anode and the second electrode layer is a cathode, the first transport layer is a hole transport layer and the second transport layer is an electron transport layer; for example, when the first electrode layer is a cathode and the second electrode layer is an anode, the first transport layer is an electron transport layer and the second transport layer is a hole transport layer.

[0088] For example, the second transport layer and the second electrode layer can be located on the surface of the texture layer away from the substrate. The second transport layer and the second electrode layer are a single layer structure. In order not to affect the pattern display of the texture layer, the second transport layer and the second electrode layer can be transparent materials. For example, the second transport layer and the second electrode layer are discontinuous structures. The second transport layer and the second electrode layer are not provided on the surface of the texture layer away from the substrate. In this case, the first electrode layer is a single layer structure.

[0089] In one embodiment, refer to Figure 1 and Figure 5 The schematic diagram of the display panel shown shows that the distance between the surface of the black matrix 400 near the substrate 100 and the substrate 100 is greater than (refer to...). Figure 5 ) or equal to (refer to) Figure 1 The distance between the surface of the texture layer 300 near the substrate 100 and the substrate 100. Therefore, the placement of the black matrix facilitates its fabrication. For example, when the distance between the surface of the black matrix 400 near the substrate 100 and the substrate 100 is greater than the distance between the surface of the texture layer 300 near the substrate 100 and the substrate 100, the pixels 200 on the substrate-side of the black matrix and the texture layer 300 are in direct contact. For example, when the distance between the surface of the black matrix 400 near the substrate 100 and the substrate 100 is equal to the distance between the surface of the texture layer 300 near the substrate 100 and the substrate 100, the pixels 200 and the texture layer 300 are completely isolated by the black matrix 400.

[0090] In one embodiment, refer to Figure 6 The schematic diagram of the display panel shown includes a pixel defining layer 500 located on one side of the substrate 100. The pixel defining layer 500 has multiple pixel openings 510, and some pixels 200 are located within the pixel openings 510. The texture layer 300 is located on the side of the pixel defining layer 500 facing away from the substrate 100. The texture layer 300 has multiple through holes 310, and the orthographic projection of the pixel openings 510 on the substrate 100 is within the orthographic projection range of the through holes 310 on the substrate 100.

[0091] Alternatively, transparent optical adhesive can be filled within the vias 310 of the texture layer 300.

[0092] In one embodiment, refer to Figure 6 The texture layer 300 and the black matrix 400 are disposed on the same layer and are in contact with each other. The second electrode layer 230 of the pixel 200 extends from the pixel opening 510 to the side of the texture layer 300 and the black matrix 400 facing away from the substrate 100. For example, the orthographic projection of the texture layer 300 on the substrate 100 is located within the orthographic projection range of the pixel defining layer 500 on the substrate 100.

[0093] In one embodiment, refer to Figure 7 The display panel also includes an encapsulation layer 600, which is located on the side of the second electrode layer 230 of the pixel 200 facing away from the substrate 100, and a texture layer 300 is located on the side of the encapsulation layer 600 facing away from the substrate 100. Exemplarily, the pixel defining layer 500 and the black matrix 400 are disposed on the same layer.

[0094] In one embodiment, the pixel defining layer 500 includes at least a portion of a black light-absorbing material, the orthographic projection of which onto the substrate 100 surrounds the orthographic projection of the pixel opening 510 onto the substrate 100. Optionally, the black matrix 400 can be reused as a pixel defining layer (see reference). Figure 8This can reduce the number of manufacturing processes.

[0095] Optionally, a transparent optical adhesive can be filled into the through-hole 310, and a color filter layer 800 can also be provided in the through-hole 310. In one embodiment, refer to Figure 9 The display panel also includes a color filter layer 800 located on the side of the pixel 200 away from the substrate 100. The orthographic projection of the color filter layer 800 on the substrate 100 covers the orthographic projection of the pixel 200 on the substrate 100. Optionally, the color filter layer 800 may be located within the via 310. Exemplarily, the pixel 200 includes a red pixel, a green pixel, and a blue pixel. The color of the color filter layer 800 corresponding to the red pixel is red, the color of the color filter layer 800 corresponding to the green pixel is green, and the color of the color filter layer 800 corresponding to the blue pixel is blue.

[0096] In one embodiment, the color of the texture layer includes at least one or a combination of at least two of cyan (C), magenta (M), yellow (Y), and black (K). It is understood that the material of the texture layer includes at least one or a combination of at least two of cyan ink, magenta ink, yellow ink, and black ink. It is understood that CMYK is a four-color printing mode, and at least two of the four CMYK colors can be mixed in different proportions to obtain the desired different colors.

[0097] In one embodiment, refer to Figure 10 The schematic diagram of the display panel shown illustrates that the texture layer 300 comprises multiple stacked sub-texture layers 330, each sub-texture layer 330 being a single color. Therefore, the texture layer 300 formed by the stacked sub-texture layers 330 produces a more detailed pattern, achieving higher accuracy in reproducing the required pattern and resulting in a better integrated display effect.

[0098] In one embodiment, the multilayer subtexture layers 330 are arranged in a predetermined order along a first direction x and a second direction y, where the first direction x is the thickness direction of the substrate 100 and the second direction y is a direction parallel to the plane of the substrate. Thus, the multilayer subtexture layers 330 can be fabricated layer by layer in a predetermined order, which facilitates the fabrication of the texture layer 300 and allows for obtaining a highly refined texture pattern.

[0099] In one embodiment, refer to Figure 11 and Figure 12 The schematic diagram of the display panel shown includes an optical adhesive layer 700 located on the side of the texture layer 300 away from the substrate 100. For example, the optical adhesive layer 700 is located on the surface of the encapsulation layer 600 away from the substrate 100.

[0100] In one embodiment, the optical adhesive layer 700 includes a light-absorbing material. This reduces light interference with the texture layer pattern, allowing for clearer display of the texture layer pattern both indoors and outdoors, thus broadening the application scenarios of the display panel.

[0101] In one embodiment, the light-absorbing material includes at least one of carbon black, black resin, chromium, and chromium oxide. Thus, in an indoor environment, the light-absorbing material can effectively reduce the brightness of the display panel, making the pattern of the texture layer clearly visible; in an outdoor environment, the light-absorbing material can effectively block the influence of ambient light on the texture layer pattern, making the texture layer pattern clearly visible.

[0102] It is understandable that the mass content of light-absorbing material in optical adhesive layer 700 does not exceed 5%.

[0103] In one embodiment, refer to Figure 11 and Figure 12 The schematic diagram of the display panel shown includes a cover plate 1000 located on the side of the texture layer 300 away from the substrate 100. The surface of the cover plate 1000 away from the substrate 100 includes a textured pattern. Thus, the textured pattern can enhance the texture of the cover plate.

[0104] For example, the texture pattern can be a wavy pattern or a frosted pattern with an embossed structure, which can be matched with the application scenario. For example, when the environment pattern is a wood grain pattern, a frosted pattern with an embossed structure can be used to match it to increase the texture.

[0105] For example, when the display panel includes a color filter layer, the cover plate is located on the surface of the color filter layer away from the substrate; when the display panel does not include a color filter layer, the cover plate is located on the surface of the encapsulation layer away from the substrate.

[0106] In one embodiment, refer to Figure 11 and Figure 12 The schematic diagram of the display panel shown includes a tactile layer 1100 located on the side of the texture layer 300 away from the substrate 100. The orthographic projection of the texture layer 300 onto the substrate 100 overlaps the orthographic projection of the tactile layer 1100 onto the substrate 100. The material of the tactile layer includes at least one of leather, wood, fabric, glass, and plastic. This allows the display panel to have a certain tactile feel, such as at least one of leather, wood grain, fabric, glass, and plastic. For example, when the pattern of the texture layer is a wood grain pattern, the tactile layer can have a wood grain tactile feel.

[0107] In one embodiment, the material of the tactile layer includes at least one selected from polyethylene terephthalate, acrylonitrile-butadiene-styrene copolymer, polycarbonate, polymethyl methacrylate, and silicone.

[0108] In one embodiment, the tactile layer has a diffuse reflective surface and / or a specular reflective surface. This allows for the fulfillment of various application requirements; for example, when a pattern of a frosted textured layer is needed, the tactile layer can have a diffuse reflective surface, or when a pattern of a specular textured layer is needed, the tactile layer can have a specular reflective pattern.

[0109] For example, the substrate and encapsulation layer in the display panel are the same as those in a conventional display surface, and are not considered improvements in this application, so they will not be described in detail here.

[0110] The second aspect of this application provides a method for manufacturing a display panel, referring to... Figure 13 The diagram shows a process flow chart for manufacturing a display panel, which includes the following steps.

[0111] S100: A first electrode layer is prepared on one side of the substrate.

[0112] It should be noted that the first electrode layer is the same as the first electrode layer of the pixel described earlier, and will not be elaborated further here.

[0113] S200: A textured layer is prepared on the side of the first electrode layer away from the substrate, and multiple through holes are formed in the textured layer.

[0114] It should be noted that the texture layer is the same as described above, and will not be elaborated on further here.

[0115] In one embodiment, preparing a textured layer on the side of the first electrode layer away from the substrate includes: preparing the textured layer on the side of the first electrode layer away from the substrate using multilayer printing or multicolor printing. For example, the textured layer can be decomposed into multiple stacked sub-texture layers, each sub-texture layer having a single color, and the sub-texture layers are printed layer by layer in a predetermined order to obtain the textured layer; for example, multicolor printing can be used to directly print the textured layer on the side of the first electrode layer away from the substrate.

[0116] In one embodiment, preparing a texture layer on the side of the first electrode layer away from the substrate using multilayer printing includes: sequentially printing multiple ink layers on the side of the first electrode layer away from the substrate, each ink layer being a single color; and creating through-holes in each ink layer to obtain the texture layer. As a result, the obtained texture layer has high resolution, and the texture layer does not affect the display effect of the display panel. This allows the display panel to be used not only for large icons or control buttons, but also for scenarios requiring more detailed display, such as animation or video display.

[0117] It should be noted that the orthographic projection of the via on the substrate covers the orthographic projection of the pixel on the substrate. The opening size of the via can be greater than or equal to the size of the pixel. The sizes of the vias opened in each ink layer can be equal or unequal.

[0118] In one embodiment, the process of fabricating a textured layer on the side of the first electrode layer away from the substrate using multilayer printing includes: fabricating an nth ink layer on the side of the first electrode layer away from the substrate, forming a via in the nth ink layer to obtain an nth sub-texture layer; fabricating an (n+1)th ink layer on the surface of the nth ink layer away from the substrate, forming a via in the (n+1)th ink layer to obtain an (n+1)th sub-texture layer, where n is an integer greater than or equal to 1; repeating the above operations until a textured layer is obtained.

[0119] In one embodiment, preparing a textured layer on the side of the first electrode layer away from the substrate using multicolor printing includes: preparing a multicolor ink layer on one side of the substrate, and opening through holes in the multicolor ink layer to obtain the textured layer.

[0120] S300: Prepare a black matrix on the side of the texture layer near the via.

[0121] It should be noted that the black matrix is ​​consistent with the previous description, and will not be elaborated further here.

[0122] For example, fabricating a black matrix on the side of the texture layer near the via includes: fabricating a full-length black matrix material layer on the surface of the texture layer away from the substrate, the black matrix material layer covering the via; and etching the full-length black matrix material layer to obtain the black matrix.

[0123] For example, preparing a black matrix on the side of the texture layer near the via includes: filling the via with a black matrix material layer and etching the black matrix material layer to obtain a black matrix.

[0124] S400: A light-emitting layer and a second electrode layer are fabricated in the through-hole to obtain multiple pixels.

[0125] It should be noted that the pixel count is consistent with the previous description, and will not be elaborated further here.

[0126] For example, a pixel includes a first electrode layer, a light-emitting layer and a second electrode layer stacked together. After the pixel is fabricated in the via, the second electrode layer on the surface of the texture layer is etched away to expose the surface of the texture layer.

[0127] For example, a pixel includes a first electrode layer, a first transport layer, a light-emitting layer, a second transport layer, and a second electrode layer stacked together. After the pixel is fabricated in the via, the second transport layer and the second electrode layer on the surface of the texture layer are etched away to expose the surface of the texture layer.

[0128] In one embodiment, refer to Figure 14 The schematic diagram shown illustrates the manufacturing process of the display panel. The manufacturing process of the display panel also includes the following steps.

[0129] S500: A cover plate is attached to the side of the textured layer away from the substrate.

[0130] It should be noted that the cover plate is the same as described above, so it will not be repeated here.

[0131] In one embodiment, before attaching the cover plate to the side of the texture layer away from the substrate, the cover plate is further pre-treated, the pre-treatment including: patterning the surface of the cover plate to obtain a texture pattern.

[0132] In one embodiment, patterning the surface of the cover plate includes patterning the surface of the cover plate by at least one of grinding, stamping and etching.

[0133] For example, the process of patterning the surface of the cover plate by grinding includes: grinding the surface of the cover plate to obtain a textured pattern, wherein the grinding thickness is controlled within 1 / 3 of the substrate thickness.

[0134] For example, the process of patterning the surface of the cover plate by stamping includes: stamping the surface of the cover plate with a patterned texture; and softening and grinding the stamped patterned texture to control its shape and obtain a texture pattern.

[0135] For example, patterning the surface of a cover plate by etching includes: coating a masking layer on the surface of the cover plate; exposing the masking layer to light and then developing it to obtain a texture pattern.

[0136] Understandably, the pretreatment of the cover plate also includes: after graphic processing of the cover plate surface, cleaning and dustproof and impact-proof packaging of the cover plate.

[0137] A third aspect of this application provides a display device that includes the display panel described above, or a display panel prepared by the preparation method described above.

[0138] For example, in addition to the display panel mentioned above, the display device may also include structures that conventional display devices should have, such as driver chips, housings, etc., which will not be described in detail here.

[0139] Understandably, display devices can be applied to scenarios such as vehicle interiors. These devices can display patterns such as wood grain and multi-colored leather, seamlessly integrating with the wood grain and leather elements used in the vehicle for a more aesthetically pleasing look. For example, display devices can be used in intelligent cabins.

[0140] Understandably, the display device can be used to display icons such as time and weather; it can also be used to display animations or videos, and can be flexibly selected according to the actual situation. The display effect is better, with almost no color deviation or other defects, and the displayed picture is more delicate, satisfying the visual experience.

[0141] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0142] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A display panel, characterized in that, include: substrate; Multiple pixels are located on one side of the substrate; A texture layer, wherein the orthogonal projection of the texture layer on the substrate surrounds the orthogonal projection of the pixel on the substrate; A black matrix is ​​disposed on one side of the substrate, and the orthographic projection of the black matrix on the substrate is at least partially located between the texture layer and the orthographic projection of the pixel on the substrate.

2. The display panel according to claim 1, characterized in that, The pixel includes a light-emitting layer, and the distance between the surface of the black matrix away from the substrate and the substrate is greater than or equal to the distance between the surface of the light-emitting layer away from the substrate and the substrate; Preferably, the distance between the surface of the black matrix near the substrate and the substrate is greater than or equal to the distance between the surface of the texture layer near the substrate and the substrate.

3. The display panel according to claim 1, characterized in that, The display panel further includes: an optical adhesive layer located on the side of the texture layer away from the substrate; Preferably, the optical adhesive layer contains a light-absorbing material; Preferably, the light-absorbing material includes at least one of carbon black, black resin, chromium, and chromium oxide.

4. The display panel according to claim 1, characterized in that, The texture layer is disposed on the same layer as the pixel, and the distance between the texture layer and the substrate on the side away from the substrate is greater than the distance between the surface of the pixel light-emitting layer and the substrate; Preferably, the texture layer is disposed on one side of the substrate, and the texture layer has a plurality of through holes, with at least some pixels located within the through holes; Preferably, the pixel includes a first electrode layer, a light-emitting layer, and a second electrode layer. The first electrode layer is disposed on the side of the texture layer facing the substrate. A through-hole in the texture layer exposes a portion of the first electrode layer. The light-emitting layer is located within the through-hole and covers the first electrode layer. The second electrode layer covers the light-emitting layer and the texture layer. Preferably, the texture layer is disposed on the same layer as the light-emitting layer of the pixel and the texture layer, one sidewall of the black matrix is ​​in contact with the light-emitting layer of the pixel, and the other sidewall is in contact with one sidewall of the texture layer; Preferably, the second electrode layers of adjacent pixels are interconnected on the side of the texture layer opposite to the substrate; Preferably, the texture layer has a plurality of grooves located near the through hole, the orthographic projection of the grooves on the substrate surrounds the orthographic projection of the through hole on the substrate, and the black matrix is ​​located within the grooves; Preferably, the orthographic projection boundary of the groove on the substrate overlaps with the orthographic projection boundary of the through hole on the substrate.

5. The display panel according to claim 1, characterized in that, The display panel further includes a pixel defining layer located on one side of the substrate. The pixel defining layer has multiple pixel openings, some of the pixels are located within the pixel openings, and the texture layer is located on the side of the pixel defining layer opposite to the substrate. The texture layer has multiple through holes, and the orthographic projection of the pixel opening on the substrate is located within the orthographic projection range of the through hole on the substrate; Preferably, the texture layer and the black matrix are disposed on the same layer, and the texture layer and the black matrix are in contact with the pixel defining layer. The second electrode layer of the pixel extends from the pixel opening to the side of the texture layer and the black matrix away from the substrate. Preferably, the orthographic projection of the texture layer on the substrate is located within the orthographic projection range of the pixel defining layer on the substrate. Preferably, the display panel further includes an encapsulation layer, the encapsulation layer being located on the side of the second electrode layer of the pixel facing away from the substrate, and the texture layer being located on the side of the encapsulation layer facing away from the substrate; Preferably, the pixel delimiting layer is disposed on the same layer as the black matrix; Preferably, the pixel defining layer includes at least a portion of a black light-absorbing material, the orthographic projection of the black light-absorbing material on the substrate surrounding the orthographic projection of the pixel opening on the substrate; Preferably, the display panel further includes a color filter layer located on the side of the pixel away from the substrate, wherein the orthographic projection of the color filter layer on the substrate covers the orthographic projection of the pixel on the substrate.

6. The display panel according to claim 1, characterized in that, The color of the texture layer includes at least one or a combination of at least two of cyan, magenta, yellow, and black; Preferably, the texture layer includes multiple layers of sub-texture layers, and each sub-texture layer has a single color. Preferably, the multiple subtexture layers are arranged in a predetermined order in a first direction and a second direction, wherein the first direction is the thickness direction of the substrate and the second direction is a direction parallel to the substrate.

7. The display panel according to any one of claims 1 to 6, characterized in that, The display panel further includes: a cover plate located on the side of the texture layer away from the substrate, the surface of the cover plate away from the substrate including a texture pattern; Preferably, the display panel further includes: a tactile layer located on the side of the texture layer away from the substrate, wherein the orthographic projection of the texture layer on the substrate covers the orthographic projection of the tactile layer on the substrate; Preferably, the tactile layer has a diffuse reflective surface and / or a specular reflective surface; Preferably, the tactile layer comprises at least one of leather, wood, fabric, glass, and plastic; Preferably, the material of the tactile layer includes at least one selected from polyethylene terephthalate, acrylonitrile-butadiene-styrene copolymer, polycarbonate, polymethyl methacrylate, and silicone.

8. A method for manufacturing a display panel, characterized in that, include: A first electrode layer is prepared on one side of the substrate; A textured layer is prepared on the side of the first electrode layer away from the substrate, and multiple through holes are formed in the textured layer; A black matrix is ​​prepared on the side of the texture layer near the via; A light-emitting layer and a second electrode layer are fabricated in the through-hole to obtain multiple pixels.

9. The preparation method according to claim 8, characterized in that, The process of fabricating a textured layer on the side of the first electrode layer opposite to the substrate includes: A textured layer is prepared on the side of the first electrode layer away from the substrate using multilayer printing or multicolor printing. Preferably, the process of fabricating a textured layer on the side of the first electrode layer facing away from the substrate using a multilayer printing method includes: Multiple ink layers are sequentially printed on the side of the first electrode layer away from the substrate, and each ink layer is a single color. Through holes are formed in each of the ink layers to obtain the texture layer; Preferably, the texturing layer is prepared on one side of the substrate using a multilayer printing method, including: An nth ink layer is prepared on the side of the first electrode layer away from the substrate, and a through hole is formed in the nth ink layer to obtain the nth sub-texture layer. An (n+1)th ink layer is prepared on the surface of the nth ink layer away from the substrate, and a through-hole is formed in the (n+1)th ink layer to obtain the (n+1)th sub-texture layer, where n is an integer greater than or equal to 1; Repeat the above steps until the texture layer is obtained; Preferably, the process of preparing the textured layer on the side of the first electrode layer facing away from the substrate using multi-color printing includes: A multi-color ink layer is prepared on the side of the first electrode layer away from the substrate, and through holes are formed in the multi-color ink layer to obtain the texture layer; Preferably, the preparation method further includes attaching a cover plate to the side of the textured layer away from the substrate; Preferably, before attaching the cover plate to the side of the textured layer away from the substrate, the method further includes pre-treating the cover plate, the pre-treating including: The surface of the cover plate is patterned to obtain a textured pattern; Preferably, the surface of the cover plate is patterned, including: The surface of the cover plate is patterned by at least one of grinding, stamping and etching.

10. A display device, characterized in that, It includes the display panel according to any one of claims 1 to 7, or the display panel prepared by the preparation method according to claim 8 or 9.

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