Display panel and preparation method thereof

Abstract

The application provides a display panel and a preparation method thereof, and solves the problems of poor display color and poor display uniformity in the prior art. The display panel comprises: a substrate; an isolation structure located on one side of the substrate, the isolation structure comprising a plurality of first openings; a light-emitting device partially located in the first openings; a light-blocking layer located on the side of the isolation structure away from the substrate, comprising a plurality of second openings, the orthographic projection of the second openings on the substrate covering the orthographic projection of the first openings on the substrate; and a texture layer located on the side of the light-blocking layer away from the substrate, the orthographic projection of the light-blocking layer on the substrate being located within the range of the orthographic projection of the texture layer on the substrate.

Description

Technical Field

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

[0002] Current display panels, such as ambient display panels, 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 panels are limited to the application scenarios of large icons or control buttons, which cannot meet the needs of fine display and have poor display uniformity. Summary of the Invention

[0003] In view of this, the present application provides a display panel and a method for manufacturing the same, 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] An isolation structure is located on one side of the substrate, and the isolation structure includes multiple first openings;

[0007] The light-emitting device is partially located in the first opening;

[0008] A light-shielding layer is located on the side of the isolation structure away from the substrate, and includes a plurality of second openings, the orthographic projection of the second openings on the substrate covering the orthographic projection of the first openings on the substrate.

[0009] The texture layer is located on the side of the light-shielding layer away from the substrate. The texture layer includes multiple third openings. The orthographic projection of the light-shielding layer on the substrate is within the orthographic projection range of the texture layer on the substrate.

[0010] In one embodiment, it further includes: a filter layer located on the side of the light-shielding layer away from the substrate, the filter layer including a plurality of filter portions, the filter portions being located within the third opening, and the orthogonal projection of the light-emitting device on the substrate being located within the orthogonal projection range of the filter portions on the substrate.

[0011] Preferably, in the first direction, the side of the filter portion facing away from the substrate is lower than or flush with the texture layer;

[0012] Preferably, the light-emitting device includes a first light-emitting device, a second light-emitting device, and a third light-emitting device with different light-emitting colors, and the filter section includes a first filter section, a second filter section, and a third filter section. The orthographic projection of the first filter section on the substrate covers the orthographic projection of the first light-emitting device on the substrate, the orthographic projection of the second filter section on the substrate covers the orthographic projection of the second light-emitting device on the substrate, and the orthographic projection of the third filter section on the substrate covers the orthographic projection of the third light-emitting device on the substrate.

[0013] In one embodiment, the light-emitting device includes a first electrode layer, a light-emitting functional layer, and a second electrode layer stacked sequentially. The first electrode layer is located on the side of the light-emitting functional layer closest to the substrate, and the first electrode layer is a whole electrode layer.

[0014] An isolation structure is disposed on the side of the first electrode layer away from the substrate. A first opening exposes a portion of the first electrode layer. A light-emitting functional layer is located within the first opening. A second electrode layer extends from the first opening to the side of the isolation structure away from the substrate.

[0015] Preferably, the isolation structure is an organic insulating material.

[0016] In one embodiment, the texture layer includes a first sub-texture layer and a second sub-texture layer, with at least a portion of the first sub-texture layer located between the second sub-texture layer and the light-shielding layer;

[0017] Preferably, the first sub-texture layer and the second sub-texture layer are stacked, and the second sub-texture layer is located on the side of the first sub-texture layer that is away from the substrate;

[0018] Preferably, the orthographic projection of the first sub-texture layer on the substrate covers the orthographic projection of the interval between adjacent light-emitting devices on the substrate;

[0019] Preferably, the transmittance of the first sub-texture layer is less than the transmittance of the second sub-texture layer;

[0020] Preferably, the color of the first sub-texture layer is black;

[0021] Preferably, a groove is provided on the side of the first sub-texture layer facing away from the substrate, and the second sub-texture layer is located in the groove;

[0022] Preferably, the second sub-texture layer comprises multiple sub-texture layers, each sub-texture layer having a single color;

[0023] 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 a direction parallel to the substrate.

[0024] Preferably, the color of the texture layer includes at least one or a combination of at least two of cyan, magenta, yellow, and black.

[0025] In one embodiment, the display panel further includes: an optical adhesive layer located on the side of the texture layer facing away from the substrate;

[0026] Preferably, the optical adhesive layer contains a light-absorbing material;

[0027] Preferably, the light-absorbing material includes at least one of carbon black, black resin, chromium, and chromium oxide.

[0028] In one embodiment, the display panel further includes: a cover plate located on the side of the texture layer facing away from the substrate, the surface of the cover plate facing away from the substrate including a texture pattern;

[0029] Preferably, the display panel further includes: a touch-sensitive layer located on the side of the cover plate away from the substrate, wherein the orthographic projection of the texture layer on the substrate is within the orthographic projection range of the touch-sensitive layer on the substrate;

[0030] Preferably, the tactile layer has a diffuse reflective surface and / or a specular reflective surface;

[0031] Preferably, the material of the tactile layer includes at least one of leather, wood, fabric, glass, and plastic;

[0032] Preferably, the material of the tactile layer includes at least one of polyethylene terephthalate, acrylonitrile-butadiene-styrene copolymer, polycarbonate, polymethyl methacrylate, and silicone.

[0033] In one embodiment, the display panel further includes an encapsulation layer disposed on the side of the light-emitting device away from the substrate, a light-shielding layer disposed on the side of the encapsulation layer away from the substrate, and a portion of the encapsulation layer filling the second opening.

[0034] Preferably, the display panel further includes: a light filter layer located on the side of the light shield layer away from the substrate, the light filter layer including a plurality of light filter portions, the light filter portions being located within a third opening, the orthogonal projection of the light-emitting device on the substrate being located within the orthogonal projection range of the light filter portions on the substrate; and a portion of the encapsulation layer located within a second opening on the side away from the substrate in contact with the light filter layer.

[0035] Preferably, in the first direction, the side of the encapsulation layer facing away from the substrate is flush with the side of the light-shielding layer facing away from the substrate.

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

[0037] An isolation structure and a light-emitting device are fabricated on one side of a substrate. Multiple first openings are formed in the isolation structure, and some of the light-emitting devices are located in the first openings.

[0038] A light-shielding layer is prepared on the side of the isolation structure away from the substrate, and a plurality of second openings are formed in the light-shielding layer. The orthogonal projection of the second openings on the substrate covers the orthogonal projection of the first openings on the substrate.

[0039] A textured layer is prepared on the side of the light-shielding layer away from the substrate, and multiple third openings are made in the textured layer. The orthogonal projection of the light-shielding layer on the substrate is located within the orthogonal projection range of the textured layer on the substrate.

[0040] In one embodiment, fabricating a textured layer on the side of the light-shielding layer away from the substrate includes:

[0041] A textured layer is prepared on the side of the light-shielding layer away from the substrate using multilayer printing or multicolor printing.

[0042] Preferably, the process of preparing a textured layer on the side of the light-shielding layer away from the substrate using a multilayer printing method includes:

[0043] Multiple ink layers are sequentially printed on the side of the light-shielding layer away from the substrate, with each ink layer being a single color.

[0044] Through-holes are made in each ink layer to obtain a texture layer. The orthogonal projection of the through-holes on the substrate covers the orthogonal projection of the first opening on the substrate.

[0045] Preferably, the process of preparing a textured layer on the side of the light-shielding layer away from the substrate using a multilayer printing method includes:

[0046] An nth ink layer is prepared on the side of the light-shielding layer away from the substrate, and a through hole is opened in the nth ink layer to obtain the nth sub-texture layer.

[0047] 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;

[0048] Repeat the above steps until a texture layer is obtained;

[0049] Preferably, the process of preparing a textured layer on the side of the light-shielding layer away from the substrate using a multilayer printing method includes:

[0050] A first ink layer is prepared on the side of the light-shielding layer away from the substrate, and grooves and through holes are formed in the first ink layer;

[0051] On the side of the first ink layer away from the substrate, the nth ink layer is sequentially prepared, and through holes corresponding to the first ink layer are opened in the nth ink layer to obtain the texture layer; n is successively 2, 3, 4...;

[0052] Preferably, the process of preparing a textured layer on the side of the light-shielding layer away from the substrate using multi-color printing includes:

[0053] A multi-color ink layer is prepared on the side of the light-shielding layer away from the substrate, and through holes are opened in the multi-color ink layer to obtain a textured layer.

[0054] In one embodiment, the method further includes attaching a cover plate to the side of the textured layer facing away from the substrate;

[0055] 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:

[0056] The surface of the cover plate is graphicized to obtain a textured pattern;

[0057] Preferably, the surface of the cover plate is patterned, including:

[0058] The surface of the cover plate is patterned by at least one of grinding, stamping and etching.

[0059] In the display panel of this application embodiment, the setting of the light-shielding layer helps to prevent light from entering the texture layer, and the setting of the texture layer does not affect the first opening of the isolation structure, so that the display uniformity of the display panel is better, thereby making the display effect of the display panel and the texture layer excellent, which is conducive to 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

[0060] Figure 1 This is a schematic diagram of the structure of the display panel in one embodiment of this application.

[0061] Figure 2 This is a schematic diagram of the structure of the display panel in another embodiment of this application.

[0062] Figure 3 This is a schematic diagram of the structure of the display panel in another embodiment of this application.

[0063] Figure 4 This is a schematic diagram of the structure of the display panel in another embodiment of this application.

[0064] Figure 5A This is a schematic diagram of the structure of the display panel in another embodiment of this application.

[0065] Figure 5B This is a schematic diagram of the structure of the display panel in another embodiment of this application.

[0066] Figure 6 This is a schematic diagram of the structure of the display panel in another embodiment of this application.

[0067] Figure 7 This is a schematic diagram of the structure of the display panel in another embodiment of this application.

[0068] Figure 8 This is a schematic diagram of the structure of the display panel in another embodiment of this application.

[0069] Figure 9 This is a schematic diagram of the structure of the display panel in another embodiment of this application.

[0070] Figure 10 This is a schematic diagram of the structure of the display panel in another embodiment of this application.

[0071] Figure 11 This is a schematic diagram of the process for manufacturing a display panel in one embodiment of this application.

[0072] Figure 12 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; an isolation structure 200 located on one side of the substrate 100, the isolation structure 200 including a plurality of first openings 210; a light-emitting device 300 partially located in the first openings 210; a light-shielding layer 400 located on the side of the isolation structure 200 away from the substrate 100, including a plurality of second openings 410, the orthographic projection of the second openings 410 on the substrate 100 covering the orthographic projection of the first openings 210 on the substrate 100; and a texture layer 600 located on the side of the light-shielding layer 400 away from the substrate 100, the texture layer 600 including a plurality of third openings 610, the orthographic projection of the light-shielding layer 400 on the substrate 100 being within the orthographic projection range of the texture layer 600 on the substrate 100.

[0078] In the display panel of this embodiment, the light-shielding layer 400 helps to prevent light from entering the texture layer 600, and the texture layer 600 does not affect the first opening 210 of the isolation structure 200, resulting in better display uniformity of the display panel. Furthermore, the texture layer 600 has a high resolution, leading to excellent display effects for both the display panel and the texture layer 600, 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 1 The display panel also includes an encapsulation layer 500 disposed on the side of the light-emitting device 300 away from the substrate 100, a light-shielding layer 400 disposed on the side of the encapsulation layer 500 away from the substrate 100, and a portion of the encapsulation layer 500 filling the second opening 410.

[0080] Optionally, refer to Figure 2 In the first direction x, the side of the encapsulation layer 500 facing away from the substrate 100 is flush with the side of the light-shielding layer 400 facing away from the substrate 100. Therefore, the encapsulation layer 500 is thinner, which helps to reduce the thickness of the display panel. Exemplarily, the first direction x can be a direction perpendicular to the plane containing the substrate 100. In one embodiment, referring to... Figure 3 The schematic diagram of the display panel shown illustrates that the texture layer 600 includes a first sub-texture layer 601 and a second sub-texture layer 602, with at least a portion of the first sub-texture layer 601 located between the second sub-texture layer 602 and the light-shielding layer 400. Consequently, the texture layer formed by multiple sub-texture layers exhibits a more refined pattern, achieving higher accuracy in reproducing the required pattern and resulting in a better integrated environmental display effect.

[0081] In one embodiment, a first sub-texture layer 601 and a second sub-texture layer 602 are stacked, with the second sub-texture layer 602 located on the side of the first sub-texture layer 601 facing away from the substrate 100.

[0082] It is understood that the orthographic projection of a sub-texture layer on the substrate 100 can cover the orthographic projection of the spacing between all the light-emitting devices 300 on the substrate 100; or, the orthographic projection of a sub-texture layer on the substrate 100 can cover the orthographic projection of the spacing between some of the light-emitting devices 300 on the substrate 100. In one embodiment, the orthographic projection of the first sub-texture layer 601 on the substrate 100 covers the orthographic projection of the spacing between adjacent light-emitting devices 300 on the substrate 100.

[0083] In one embodiment, the transmittance of the first sub-texture layer 601 is lower than that of the second sub-texture layer 602. Therefore, the first sub-texture layer 601 is designed to improve the display effect of the display panel and enhance the color contrast and clarity of the texture layer 600.

[0084] In one embodiment, the first sub-texture layer 601 is black. Therefore, the first sub-texture layer 601 can prevent color crosstalk between adjacent light-emitting devices 300, avoid color shift caused by color mixing, and also avoid color dot problems, thus improving the display uniformity of the display panel.

[0085] In one embodiment, a groove 611 is provided on the side of the first sub-texture layer 601 facing away from the substrate 100, and a second sub-texture layer 602 is located in the groove 611. The first sub-texture layer 601 has a better effect in preventing color crosstalk between adjacent light-emitting devices 300, better avoids color dot problems, and further improves the display uniformity of the display panel.

[0086] In one embodiment, refer to Figure 4 The schematic diagram of the display panel shown illustrates that the second sub-texture layer 602 includes multiple layers of sub-texture layers 612, each layer of which is a single color. Therefore, the texture layer 600 formed by the stacked sub-texture layers 612 produces a more refined pattern, achieving higher accuracy in reproducing the required pattern and resulting in a better integrated display effect.

[0087] In one embodiment, the multilayer subtexture layers 612 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 substrate 100. Thus, the multilayer subtexture layers 612 can be fabricated layer by layer in a predetermined order, which is beneficial for the fabrication of the texture layer 600 and for obtaining a highly refined texture pattern.

[0088] In one embodiment, the color of the texture layer 600 includes at least one or a combination of at least two of cyan, magenta, yellow, and black. It is understood that the material of the texture layer 600 includes at least one or a combination of at least two of cyan ink, magenta ink, yellow ink, and black ink.

[0089] In one embodiment, refer to Figure 5A The schematic diagram of the display panel shown includes a light filter layer 800 located on the side of the light-shielding layer 400 facing away from the substrate 100. The light filter layer 800 includes multiple light filter sections 810, which are located within a third opening 610. The orthographic projection of the light-emitting device 300 onto the substrate 100 lies within the orthographic projection range of the light filter section 810 onto the substrate 100. Therefore, the light filter layer 800 can improve color purity and enhance the display effect of the display panel.

[0090] For example, the portion of the encapsulation layer 500 located within the second opening 410 that faces away from the substrate 100 contacts the filter layer 800.

[0091] In one embodiment, the material of the light filter layer 800 includes at least one of cyan (C), magenta (M), yellow (Y), and black (K) ink. Therefore, the light filter layer 800 has a certain reflectivity, which can reduce light interference with the pattern of the texture layer 600, allowing for a clearer display of the texture layer 600 pattern both indoors and outdoors, thus broadening the application scenarios of the display panel.

[0092] It is understandable that CMYK is a four-color printing mode, which allows at least two of the four CMYK colors to be mixed in different proportions to obtain different colors.

[0093] Optionally, refer to Figure 5B The schematic diagram of the display panel shown illustrates that the width of the filter section 810 gradually decreases along the direction away from the substrate 100, while the width of the texture layer 600 gradually increases along the same direction. This is more conducive to avoiding color crosstalk between adjacent light-emitting devices 300.

[0094] For example, in the filter layer 800 of the light-emitting device corresponding to red light or on the side of the first opening 210 that needs to emit red light away from the substrate 100, at least one of cyan ink, magenta ink, yellow ink, and black ink is used to prepare red ink. The red ink is then mixed with transparent adhesive to prepare the red filter layer. The preparation of filter layers of other colors can refer to the preparation method of the red filter layer described above, and will not be elaborated further here.

[0095] In one embodiment, in the first direction x, the side of the filter portion 810 facing away from the substrate 100 is lower than or flush with the texture layer 600. This helps to avoid color crosstalk between adjacent light-emitting devices 300 and improves the display quality of the display panel.

[0096] In one embodiment, the light-emitting device 300 includes a first light-emitting device 310, a second light-emitting device 320, and a third light-emitting device 330 with different light-emitting colors. The filter portion 810 includes a first filter portion 811, a second filter portion 812, and a third filter portion 813. The orthogonal projection of the first filter portion 811 on the substrate 100 covers the orthogonal projection of the first light-emitting device 310 on the substrate 100. The orthogonal projection of the second filter portion 812 on the substrate 100 covers the orthogonal projection of the second light-emitting device 320 on the substrate 100. The orthogonal projection of the third filter portion 813 on the substrate 100 covers the orthogonal projection of the third light-emitting device 330 on the substrate 100.

[0097] In one embodiment, refer to Figure 6 and Figure 7 The schematic diagram of the display panel shown illustrates that the light-emitting device 300 includes a first electrode layer 301, a light-emitting functional layer 302, and a second electrode layer 303 stacked sequentially. The first electrode layer 301 is located on the side of the light-emitting functional layer 302 closest to the substrate 100. An isolation structure 200 is disposed on the side of the first electrode layer 301 facing away from the substrate 100. A first opening 210 exposes a portion of the first electrode layer 301, the light-emitting functional layer 302 is located within the first opening 210, and the second electrode layer 303 extends from the first opening 210 to the side of the isolation structure 200 facing away from the substrate 100. For example, the isolation structure 200 can be a pixel defining layer or an isolation pillar. When the isolation structure 200 is a pixel defining layer, the second electrode layer 303 can be continuous or discontinuous. Optionally, to achieve excellent light-blocking effect of the light-shielding layer 400, the second electrode layer 303 may be discontinuous (see details). Figure 7 This allows the light-shielding layer 400 to directly contact the surface of the isolation structure 200 away from the substrate 100. In a preferred embodiment, when the isolation structure 200 is an isolation pillar, the second electrode layer 303 on the surface of the isolation pillar is disconnected from the second electrode layer 303 in the first opening 210. In this case, the second electrode layer 303 on the surface of the isolation pillar needs to be etched away, so that the light-shielding layer 400 directly contacts the surface of the isolation structure 200 away from the substrate 100. When the light-shielding layer 400 directly contacts the surface of the isolation structure 200 away from the substrate 100, the second electrode layer 303 has a discontinuous structure, while the first electrode layer 301 is a continuous electrode layer. Therefore, the light-emitting requirements of the light-emitting device can be met, and the light-shielding effect of the light-shielding layer 400 is excellent.

[0098] Optionally, the isolation structure 200 is made of organic insulating material.

[0099] It is understood that one of the first electrode layer 301 and the second electrode layer 303 is an anode, and the other of the first electrode layer 301 and the second electrode layer 303 is a cathode. Exemplarily, the light-emitting functional layer 302 includes an emitting layer (EML), and may further include at least one of a hole injection layer (HIL), a hole transport layer (HTL), and an electron-blocking layer (EBL) located between the anode and the emitting layer (EML), and at least one of an electron injection layer (EIL), an electron transport layer (ETL), and a hole-blocking layer (HBL) located between the cathode and the emitting layer (EML).

[0100] In one embodiment, refer to Figure 8 The schematic diagram of the display panel shown includes an optical adhesive layer 900 located on the side of the texture layer 600 facing away from the substrate 100.

[0101] In one embodiment, the optical adhesive layer contains 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.

[0102] 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.

[0103] It is understandable that the mass content of light-absorbing material in optical adhesive layer 900 is no more than 5%.

[0104] In one embodiment, refer to Figure 9 The schematic diagram of the display panel shown includes a cover plate 1000 located on the side of the texture layer 600 facing away from the substrate 100. The surface of the cover plate 1000 facing away from the substrate 100 includes a textured pattern. Thus, the textured pattern can enhance the texture of the cover plate.

[0105] 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.

[0106] For example, the cover plate 1000 is made of glass, which provides better transparency and protection for the display panel.

[0107] In one embodiment, refer to Figure 10 The schematic diagram of the display panel shown includes a tactile layer 1100 located on the side of the cover plate 1000 facing away from the substrate 100. The orthographic projection of the texture layer 600 onto the substrate 100 lies within the orthographic projection range of the tactile layer 1100 onto the substrate 100. The material of the tactile layer 1100 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 600 is a wood grain pattern, the tactile layer can have a wood grain tactile feel.

[0108] In one embodiment, the tactile layer 1100 has a diffuse reflective surface and / or a specular reflective surface. This allows for the fulfillment of various usage requirements; for example, when a pattern of a frosted textured layer is required, the tactile layer can have a diffuse reflective surface, or when a pattern of a mirror-like textured layer is required, the tactile layer can have a specular reflective pattern.

[0109] In one embodiment, the material of the tactile layer 1100 includes at least one selected from polyethylene terephthalate, acrylonitrile-butadiene-styrene copolymer, polycarbonate, polymethyl methacrylate, and silicone.

[0110] For example, the substrate 100 and the encapsulation layer 500 in the display panel are the same substrate and encapsulation layer in a conventional display surface, and are not considered improvements in this application, so they will not be described in detail here.

[0111] It is understood that the display panel of this application embodiment can be applied to application scenarios such as vehicle interiors. The display panel can be used to display patterns such as wood grain and multi-colored leather, which can be integrated with the wood grain and leather devices used in the vehicle, resulting in a more aesthetically pleasing appearance. For example, the display panel can be applied in an intelligent cabin.

[0112] It is understood that the display panel in this application embodiment can be used to display icons such as time and weather; it can also be used to display animations or videos, etc., and can be flexibly selected according to the actual situation. The display effect is better, and there are almost no defects such as color deviation. The displayed picture is more delicate and meets the visual experience.

[0113] The second aspect of this application provides a method for manufacturing a display panel, referring to... Figure 11 The diagram shows a process flow chart for manufacturing a display panel, which includes the following steps.

[0114] S100: An isolation structure and a light-emitting device are prepared on one side of a substrate. Multiple first openings are formed in the isolation structure, and some of the light-emitting devices are located in the first openings.

[0115] It should be noted that the isolation structure and light-emitting device are consistent with the previous description, and will not be repeated here.

[0116] For example, after fabricating the light-emitting device, the second electrode layer or the second electrode layer and the second transport layer on the surface of the isolation structure are etched away to expose the surface of the isolation structure.

[0117] S200: A light-shielding layer is prepared on the side of the isolation structure away from the substrate, and multiple second openings are formed in the light-shielding layer.

[0118] The orthographic projection of the second opening onto the substrate covers the orthographic projection of the first opening onto the substrate.

[0119] It should be noted that the light-blocking layer is the same as described above, and will not be repeated here.

[0120] For example, the light-shielding layer covers the surface of the isolation structure away from the substrate and is in direct contact with the surface of the isolation structure away from the substrate.

[0121] S300: A textured layer is prepared on the side of the light-shielding layer away from the substrate, and multiple third openings are formed in the textured layer.

[0122] The orthographic projection of the light-shielding layer on the substrate is located within the orthographic projection range of the texture layer on the substrate.

[0123] In one embodiment, preparing a textured layer on the side of the light-shielding layer away from the substrate includes preparing the textured layer on the side of the light-shielding layer away from the substrate by means of multilayer printing or multicolor printing.

[0124] In one embodiment, preparing a texture layer on the side of the light-shielding layer away from the substrate using multilayer printing includes: sequentially printing multiple ink layers on the side of the light-shielding 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, wherein the orthographic projection of the through-holes on the substrate covers the orthographic projection of the first opening on the substrate. Therefore, 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.

[0125] In one embodiment, fabricating a textured layer on the side of the light-shielding layer away from the substrate using a multilayer printing method includes: fabricating an nth ink layer on the side of the light-shielding 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.

[0126] In one embodiment, the process of preparing a textured layer on the side of the light-shielding layer away from the substrate using multilayer printing includes: preparing a first ink layer on the side of the light-shielding layer away from the substrate, and forming grooves and through holes in the first ink layer; sequentially preparing an nth ink layer on the side of the first ink layer away from the substrate, and forming through holes corresponding to the first ink layer in the nth ink layer to obtain the textured layer; n is successively 2, 3, 4...

[0127] In one embodiment, preparing a textured layer on the side of the light-shielding layer away from the substrate using multicolor printing includes: preparing a multicolor ink layer on the side of the light-shielding layer away from the substrate, and forming through holes in the multicolor ink layer to obtain the textured layer.

[0128] In one embodiment, refer to Figure 12 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] S400: A cover plate is attached to the side of the texture layer away from the substrate.

[0130] 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-processed, the pre-processing including: patterning the surface of the cover plate to obtain a texture pattern.

[0131] 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.

[0132] 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.

[0133] 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.

[0134] 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.

[0135] 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.

[0136] 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.

[0137] 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; An isolation structure is located on one side of the substrate, and the isolation structure includes a plurality of first openings; The light-emitting device is partially located in the first opening; A light-shielding layer, located on the side of the isolation structure opposite to the substrate, includes a plurality of second openings, the orthographic projection of the second openings on the substrate covering the orthographic projection of the first openings on the substrate; A texture layer is located on the side of the light-shielding layer opposite to the substrate. The texture layer includes a plurality of third openings, and the orthographic projection of the light-shielding layer on the substrate is located within the orthographic projection range of the texture layer on the substrate.

2. The display panel according to claim 1, characterized in that, Also includes: A light filter layer is located on the side of the light-shielding layer opposite to the substrate. The light filter layer includes a plurality of light filter portions, which are located within a third opening. The orthogonal projection of the light-emitting device on the substrate is located within the orthogonal projection range of the light filter portion on the substrate. Preferably, in the first direction, the side of the filter portion facing away from the substrate is lower than or flush with the texture layer; Preferably, the light-emitting device includes a first light-emitting device, a second light-emitting device, and a third light-emitting device with different emission colors, and the filter section includes a first filter section, a second filter section, and a third filter section. The orthographic projection of the first filter section on the substrate covers the orthographic projection of the first light-emitting device on the substrate, the orthographic projection of the second filter section on the substrate covers the orthographic projection of the second light-emitting device on the substrate, and the orthographic projection of the third filter section on the substrate covers the orthographic projection of the third light-emitting device on the substrate.

3. The display panel according to claim 1, characterized in that, The light-emitting device includes a first electrode layer, a light-emitting functional layer, and a second electrode layer stacked sequentially. The first electrode layer is located on the side of the light-emitting functional layer that is close to the substrate, and the first electrode layer is a whole electrode layer. The isolation structure is disposed on the side of the first electrode layer away from the substrate, the first opening exposes a portion of the first electrode layer, the light-emitting functional layer is located in the first opening, and the second electrode layer extends from the first opening to the side of the isolation structure away from the substrate. Preferably, the isolation structure is an organic insulating material.

4. The display panel according to claim 1, characterized in that, The texture layer includes a first sub-texture layer and a second sub-texture layer, with at least a portion of the first sub-texture layer located between the second sub-texture layer and the light-shielding layer; Preferably, the first sub-texture layer and the second sub-texture layer are stacked, and the second sub-texture layer is located on the side of the first sub-texture layer that faces away from the substrate; Preferably, the orthographic projection of the first sub-texture layer on the substrate covers the orthographic projection of the interval between adjacent light-emitting devices on the substrate; Preferably, the transmittance of the first sub-texture layer is less than the transmittance of the second sub-texture layer; Preferably, the color of the first sub-texture layer is black; Preferably, the first sub-texture layer has a groove on the side facing away from the substrate, and the second sub-texture layer is located in the groove; Preferably, the second sub-texture layer comprises multiple sub-texture layers, and the color of each sub-texture layer is 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; Preferably, the color of the texture layer includes at least one or a combination of at least two of cyan, magenta, yellow, and black.

5. The display panel according to any one of claims 1 to 4, characterized in that, The display panel further includes: an optical adhesive layer located on the side of the texture layer opposite to 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.

6. The display panel according to any one of claims 1 to 4, characterized in that, The display panel further includes: a cover plate located on the side of the texture layer facing away from the substrate, the surface of the cover plate facing away from the substrate including a texture pattern; Preferably, the display panel further includes: a tactile layer located on the side of the cover plate opposite to the substrate, wherein the orthographic projection of the texture layer on the substrate is within the orthographic projection range of the tactile layer on the substrate; Preferably, the tactile layer has a diffuse reflective surface and / or a specular reflective surface; Preferably, the material of the tactile layer includes 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.

7. The display panel according to any one of claims 1 to 4, characterized in that, The display panel further includes an encapsulation layer disposed on the side of the light-emitting device away from the substrate, and a light-shielding layer disposed on the side of the encapsulation layer away from the substrate, with a portion of the encapsulation layer filling the second opening; Preferably, the display panel further includes: a light filter layer located on the side of the light shielding layer away from the substrate, the light filter layer including a plurality of light filter portions, the light filter portions being located within a third opening, the orthogonal projection of the light-emitting device on the substrate being located within the orthogonal projection range of the light filter portions on the substrate; and the portion of the encapsulation layer located within the second opening on the side away from the substrate being in contact with the light filter layer. Preferably, in the first direction, the side of the encapsulation layer facing away from the substrate is flush with the side of the light-shielding layer facing away from the substrate.

8. A method for manufacturing a display panel, characterized in that, include: An isolation structure and a light-emitting device are fabricated on one side of a substrate, and a plurality of first openings are formed in the isolation structure, with some of the light-emitting devices located in the first openings; A light-shielding layer is prepared on the side of the isolation structure away from the substrate, and a plurality of second openings are formed in the light-shielding layer, wherein the orthogonal projection of the second openings on the substrate covers the orthogonal projection of the first openings on the substrate. A textured layer is prepared on the side of the light-shielding layer away from the substrate, and a plurality of third openings are formed in the textured layer. The orthogonal projection of the light-shielding layer on the substrate is located within the orthogonal projection range of the textured layer on the substrate.

9. The preparation method according to claim 8, characterized in that, The process of fabricating a textured layer on the side of the light-shielding layer opposite to the substrate includes: A textured layer is prepared on the side of the light-shielding layer away from the substrate using multilayer printing or multicolor printing. Preferably, the texture layer is prepared on the side of the light-shielding layer opposite to the substrate using a multilayer printing method, including: Multiple ink layers are sequentially printed on the side of the light-shielding layer away from the substrate, and each ink layer is a single color. A through-hole is formed in each ink layer to obtain the texture layer, wherein the orthogonal projection of the through-hole on the substrate covers the orthogonal projection of the first opening on the substrate; Preferably, the texture layer is prepared on the side of the light-shielding layer opposite to the substrate using a multilayer printing method, including: An nth ink layer is prepared on the side of the light-shielding 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 texture layer is prepared on the side of the light-shielding layer opposite to the substrate using a multilayer printing method, including: A first ink layer is prepared on the side of the light-shielding layer opposite to the substrate, and grooves and through holes are formed in the first ink layer; An nth ink layer is sequentially prepared on the side of the first ink layer away from the substrate, and a through-hole corresponding to the first ink layer is formed in the nth ink layer to obtain the texture layer; n is 2, 3, 4... sequentially. Preferably, the process of preparing a textured layer on the side of the light-shielding layer opposite to the substrate using multi-color printing includes: A multi-color ink layer is prepared on the side of the light-shielding layer opposite to the substrate, and through holes are formed in the multi-color ink layer to obtain the texture layer.

10. The preparation method according to claim 8, characterized in that, Also includes: A cover plate is attached to the side of the textured layer opposite to the substrate; Preferably, before attaching the cover plate to the side of the textured layer opposite to 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.

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