Display panel, display panel manufacturing method and electronic device

Abstract

This application provides a display panel, a method for manufacturing the display panel, and an electronic device, relating to the field of display technology. The display panel includes a substrate, a screen body, and a first light-shielding layer. The screen body is located on one side of the substrate and includes a display area and a non-display area located on at least one side of the display area. The first light-shielding layer is located on the side of the screen body facing away from the substrate. The width of the first light-shielding layer is less than or equal to the width of the non-display area. By providing a first light-shielding layer on the side of the screen body facing away from the substrate, and ensuring that the width of the first light-shielding layer is less than or equal to the width of the non-display area, this application can reduce the bezel width of the display panel.

Description

Technical Field

[0001] This application relates to the field of display technology, and more specifically, to a display panel, a method for manufacturing the display panel, and an electronic device. Background Technology

[0002] Organic light-emitting diodes (OLEDs) and flat panel displays based on light-emitting diodes (LEDs) are widely used in various consumer electronics products such as mobile phones, televisions, laptops, and desktop computers due to their advantages such as high image quality, energy saving, thin body, and wide range of applications, becoming the mainstream of display panels.

[0003] However, current display panels cannot achieve narrower bezels. Summary of the Invention

[0004] To overcome the technical problems mentioned in the background, embodiments of this application provide a display panel, the display panel including a display area and a non-display area, wherein the display panel includes:

[0005] Substrate;

[0006] A screen located on one side of the substrate, the screen comprising a display area and a non-display area;

[0007] A first light-shielding layer is located on the side of the screen body away from the substrate; the width of the light-shielding layer is less than or equal to the width of the non-display area of ​​the screen body.

[0008] In one possible implementation, the screen includes a metal layer, the metal layer includes metal traces, and the orthographic projection of the first light-shielding layer on the substrate at least partially coincides with the orthographic projection of the metal traces on the substrate;

[0009] Preferably, the first light-shielding layer includes a plurality of patterned light-shielding strips, the orthographic projection of the light-shielding strips on the substrate at least partially coincides with the orthographic projection of the metal traces on the substrate;

[0010] Preferably, the light density of at least a portion of the material on the side of the first light-shielding layer away from the substrate is greater than the light density of at least a portion of the material on the side of the first light-shielding layer closer to the substrate.

[0011] In one possible implementation, the first light-shielding layer has a plurality of first concave-convex structures on the side facing away from the substrate;

[0012] Preferably, the material of the first light-shielding layer includes black glue;

[0013] Preferably, along the direction perpendicular to the substrate, the cross-sectional shape of the first concave-convex structure is at least one of trapezoidal, boss-shaped, or serrated.

[0014] In one possible implementation, the display panel further includes a cover plate located on the side of the first light-shielding layer opposite to the substrate, the cover plate covering the display area and non-display area of ​​the screen and extending to the side of the non-display area opposite to the display area;

[0015] Preferably, the display panel further includes a filling portion located on the side of the first light-shielding layer opposite to the display area, the filling portion being disposed around the screen body and located on the side of the non-display area opposite to the display area;

[0016] Preferably, along a direction perpendicular to the substrate, the filling portion covers one side of the substrate and the screen, and covers the cover plate near one side of the substrate;

[0017] Preferably, along a direction perpendicular to the substrate, the side of the filling portion facing away from the display area is coplanar with the side of the cover plate facing away from the display area;

[0018] Preferably, the filling portion is made of the same material as the first light-shielding layer.

[0019] In one possible implementation, the display panel further includes a frame, and the side of the filling portion opposite to the display area and the side of the cover plate opposite to the display area are both fitted to the side wall of the frame.

[0020] Preferably, the bottom wall of the frame is fitted to the side of the substrate opposite to the screen body.

[0021] In one possible implementation, the display panel further includes an optical adhesive layer located on the side of the first light-shielding layer opposite to the substrate, and the optical adhesive layer also covers the display area of ​​the screen.

[0022] Preferably, the thickness of the first light-shielding layer is 20μm-40μm along a direction perpendicular to the substrate.

[0023] In one possible implementation, the screen further includes an aperture area and a second light-shielding layer that at least partially surrounds the aperture area, wherein the second light-shielding layer is disposed in the same layer as the first light-shielding layer.

[0024] Preferably, the optical density of at least a portion of the material on the side of the second light-shielding layer away from the substrate is greater than the optical density of at least a portion of the material on the side of the second light-shielding layer closer to the substrate;

[0025] Preferably, the second light-shielding layer has a plurality of second concave-convex structures on the side opposite to the substrate;

[0026] Preferably, the non-display area surrounds the display area.

[0027] In one possible implementation, this application also provides a method for manufacturing a display panel, the method comprising:

[0028] Provide a substrate;

[0029] A screen is formed on one side of the substrate, the screen including a display area and a non-display area located on at least one side of the display area;

[0030] A first light-shielding layer is formed on the side of the screen body away from the substrate, covering the non-display area, wherein the width of the first light-shielding layer is less than or equal to the width of the non-display area.

[0031] In one possible implementation, the step of forming a first light-shielding layer on the side of the screen facing away from the substrate includes:

[0032] A light-shielding transition layer is formed by at least one coating and exposure process, wherein the light-shielding transition layer includes first light-shielding particles;

[0033] Pattern the light-shielding transition layer to form the first light-shielding layer;

[0034] In one possible implementation, the step of forming a first light-shielding layer on the side of the screen facing away from the substrate further includes:

[0035] After the light-shielding transition layer is formed, a second light-shielding particle is disposed on the side of the light-shielding transition layer away from the substrate by imprinting or implantation process;

[0036] The light-shielding transition layer is patterned to form the first light-shielding layer; wherein the optical density of the second light-shielding particles is greater than the optical density of the first light-shielding particles.

[0037] In one possible implementation, this application also provides an electronic device, which includes the display panel described in this application.

[0038] Compared with the prior art, this application has the following beneficial effects:

[0039] This application provides a display panel, a method for manufacturing the display panel, and an electronic device. By providing a first light-shielding layer on the side of the screen away from the substrate, and the width of the first light-shielding layer is less than or equal to the width of the non-display area, the bezel width of the display panel can be reduced. Attached Figure Description

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0041] Figure 1 A cross-sectional schematic diagram of a display panel in the prior art provided for embodiments of this application;

[0042] Figure 2 A cross-sectional schematic diagram of the display panel provided in an embodiment of this application;

[0043] Figure 3 A cross-sectional schematic diagram of a display panel with a trapezoidal or boss-shaped cross-section for the first concave-convex structure provided in the embodiments of this application;

[0044] Figure 4 A cross-sectional schematic diagram of a display panel with a sawtooth-shaped cross-section for the first concave-convex structure provided in an embodiment of this application;

[0045] Figure 5 A cross-sectional schematic diagram of a display panel with a first concave-convex structure having a sawtooth and a boss-shaped cross-section, as provided in the embodiments of this application;

[0046] Figure 6 The display panel provided in the embodiments of this application also includes a cross-sectional schematic diagram of optical adhesive;

[0047] Figure 7 A cross-sectional schematic diagram showing a second light-shielding layer further provided in the hole area of ​​the display panel, as provided in an embodiment of this application;

[0048] Figure 8 A cross-sectional schematic diagram of a display panel with a first concave-convex structure on a second light-shielding layer provided in an embodiment of this application;

[0049] Figure 9 The display panel provided in the embodiments of this application also includes a cross-sectional schematic diagram of the filling portion;

[0050] Figure 10 This is a top view of a display panel with a filling portion surrounding a non-display area, provided in an embodiment of this application.

[0051] Figure 11 The display panel provided in the embodiments of this application also includes a cross-sectional schematic diagram of the bezel;

[0052] Figure 12 A schematic flowchart illustrating a method for manufacturing a display panel according to an embodiment of this application;

[0053] Figure 13This is a flowchart illustrating the specific execution method of step S12 provided in the embodiments of this application.

[0054] Reference numerals: 1. Substrate; 2. Screen; 21. Metal layer; 211. Metal trace; 3. Optical adhesive layer; 4. Ink layer; 5. Cover plate; 6. First light-shielding layer; 61. First concave-convex structure; 7. Second light-shielding layer; 71. Second concave-convex structure; 8. Hole area; 9. Filler portion; 10. Frame. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0056] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0057] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0058] In the description of this application, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0059] It should be noted that, where there is no conflict, different features in the embodiments of this application can be combined with each other.

[0060] See Figure 1The display panel in the related technology includes a display area AA and a non-display area AB. In the non-display area AB, the display panel includes a substrate 1, a screen 2 located on one side of the substrate 1, an optical adhesive layer 3 located on the side of the screen 2 opposite to the substrate 1, an ink layer 4 located on the side of the optical adhesive layer 3 opposite to the substrate 1, and a cover plate 5 located on the side of the ink layer 4 opposite to the substrate 1. The ink layer 4 can block some of the light emitted from the pixels from reaching the metal traces 211, thereby reducing the reflection or light transmission of the metal traces 211 to a certain extent.

[0061] However, the width of ink layer 4 is greater than the maximum width of the non-display area of ​​the display body, resulting in a wider bezel. Furthermore, ink layer 4 does not effectively block light emitted from pixels, thus failing to reduce light transmission through the metal traces 211 of the metal layer 21 in the screen body 2, affecting the display effect. There is a gap between ink layer 4 and cover plate 5, and the adhesive at cover plate 5 cannot fill this gap, leading to problems such as air bubbles remaining after cover plate 5 is applied. Additionally, a certain gap needs to be reserved between the screen body 2 and the bezel to ensure the adhesive can fill smoothly within this gap, protecting the sides of the screen body. This gap further increases the bezel width. Moreover, due to the pressure of cover plate 5 on ink layer 4, the width of ink layer 4 will exceed the maximum width of the bezel area of ​​the display panel, resulting in a wider bezel area and preventing the implementation of a narrower bezel design.

[0062] In view of this, this embodiment provides a solution that can make the bezel of the display panel narrower. The solution provided in this embodiment will be described in detail below.

[0063] See Figure 2 This embodiment provides a display panel, which includes a substrate 1, a screen 2, and a first light-shielding layer 6.

[0064] The screen body 2 is located on one side of the substrate 1. The screen body includes a display area AA and a non-display area AB. The non-display area AB surrounds the display area AA and includes the border area of ​​the display panel. The first light-shielding layer 6 is disposed in the border area of ​​the display panel.

[0065] The first light-shielding layer 6 is located on the side of the screen 2 away from the substrate 1; the width of the first light-shielding layer 6 is less than or equal to the width of the non-display area AB of the screen 2.

[0066] Thus, compared to the ink layer 4 that serves to block light in related technologies, the width of the UV-cured first light-blocking layer 6 in this embodiment will not exceed the maximum width of the display panel bezel area. Therefore, compared to related technologies, this embodiment can reduce the bezel width of the display panel. At the same time, the surface of the first light-blocking layer 6 is flat, and there is less likelihood of a gap between it and the cover plate 5, thereby reducing the likelihood of problems such as air bubbles remaining during the adhesion of the cover plate 5.

[0067] Based on the above design, in this embodiment, by setting a first light-shielding layer 6 on the side of the screen 2 away from the substrate 1, and the width of the first light-shielding layer 6 is less than or equal to the width of the non-display area AB of the screen 2, the width of the display panel bezel can be reduced and the problem of air bubbles remaining when the cover plate 5 is attached can be avoided.

[0068] In one possible implementation, please refer again. Figure 2 The screen 2 includes a metal layer 21, which includes a plurality of metal traces 211. The orthographic projection of the first light-shielding layer 6 on the substrate 1 at least partially overlaps with the orthographic projection of the metal traces 211 on the substrate 1.

[0069] The metal trace 211 can be a touch trace or signal line of the display panel. If the light emitted by the pixel in the display panel shines on the metal trace 211, the metal trace 211 can reflect the light to the outside of the display panel, or the metal trace 211 located above the pixel cannot block the light emitted by the pixel, resulting in light leakage from the edge of the display panel, thereby affecting the display effect of the display panel.

[0070] In this embodiment, since the orthographic projection of the first light-shielding layer 6 on the substrate 1 at least partially overlaps with the orthographic projection of the metal trace 211 on the substrate 1, the first light-shielding layer 6 can reduce the light reflected by the metal trace 211, thereby improving the display quality of the display panel.

[0071] Furthermore, please see again Figure 2 The first light-shielding layer 6 includes a plurality of patterned light-shielding strips, the orthographic projection of the light-shielding strips on the substrate 1 at least partially overlapping the orthographic projection of the metal trace 211 on the substrate 1. Due to the limitation of ultraviolet light penetration, a light-shielding transition layer with multiple exposures is first passed through, and then particles with higher light density are set on the side of the light-shielding transition layer away from the substrate 1 by imprinting or implantation, and then the light-shielding strips are formed by patterning the light-shielding transition layer.

[0072] Furthermore, please see again Figure 2 The light density of at least a portion of the material on the side of the first light-shielding layer 6 away from the substrate 1 is greater than the light density of at least a portion of the material on the side of the first light-shielding layer 6 close to the substrate 1.

[0073] Since the light density of at least a portion of the material on the side of the first light-shielding layer 6 away from the substrate 1 is greater than the light density of at least a portion of the material on the side of the first light-shielding layer 6 close to the substrate 1, the light-shielding effect of the first light-shielding layer 6 is stronger than that of the ink layer 4 in the related technology. This can further reduce the light emitted by the pixels in the display area that reaches the metal trace 211, thereby further reducing the light reflected by the metal trace 211, and ultimately further improving the display quality of the display panel.

[0074] In one possible implementation, please refer to Figure 3 The first light-shielding layer 6 has multiple first concave-convex structures 61 on the side facing away from the substrate 1. The first concave-convex structures 61 can be formed by patterning on the side of the first light-shielding layer 6 facing away from the substrate 1. The first concave-convex structures 61 include multiple grooves and protrusions arranged at intervals. When light shines on the first concave-convex structures 61, some light is reflected and absorbed by the first concave-convex structures 61. The first concave-convex structures 61 can increase the effective light-absorbing area of ​​the first light-shielding layer 6, which is equivalent to increasing the surface roughness of the side of the first light-shielding layer 6 facing away from the substrate 1, reducing the reflectivity of light on the side of the first light-shielding layer 6 facing away from the substrate 1, and improving the light leakage effect of the first light-shielding layer 6. As a result, the light reaching the metal trace 211 through the first light-shielding layer 6 is weaker, and the light reflected from the metal trace 211 to the outside of the display panel is weaker, which can further improve the display effect of the display panel.

[0075] Preferably, the material of the first light-shielding layer 6 includes black glue, which has a good light absorption effect. Therefore, setting the material of the first light-shielding layer 6 to include black glue can improve the light blocking effect of the first light-shielding layer 6 on the metal trace 211.

[0076] In one possible implementation, the cross-sectional shape of the first concave-convex structure 61 along the direction perpendicular to the substrate 1 is at least one of trapezoidal, boss-shaped, or sawtooth-shaped.

[0077] In some embodiments, please refer again Figure 3 The first concave-convex structure 61 has a trapezoidal or boss-shaped cross-section; in other embodiments, please refer to Figure 4 The first concave-convex structure 61 has a sawtooth cross-sectional shape; in some other embodiments, please refer to Figure 5 The cross-sectional shape of the first concave-convex structure 61 is sawtooth and boss-shaped. When light shines on the first concave-convex structure 61, some of the light will be reflected and absorbed by the first concave-convex structure 61, thereby making the light reaching the metal trace 211 through the first light-shielding layer 6 weaker.

[0078] In one possible implementation, please refer to Figure 6The display panel also includes an optical adhesive layer 3 located on the side of the first light-shielding layer 6 facing away from the substrate 1.

[0079] Compared to the related technology in which the optical adhesive layer 3 is set on the side of the ink layer 4 close to the substrate 1, in this embodiment the optical adhesive layer 3 is set on the side of the first light-shielding layer 6 away from the substrate 1. The first light-shielding layer 6 will not block the ultraviolet rays from irradiating the optical adhesive layer 3. Therefore, the first light-shielding layer 6 will not affect the curing of the optical adhesive layer 3, thereby reducing the risk of generating rebound bubbles.

[0080] Preferably, please see again. Figure 2 Along the direction perpendicular to the substrate 1, the thickness D of the first light-shielding layer 6 is 20μm-40μm. For example, the thickness D can be 20μm, 22μm, 25μm, 30μm, 35μm, 38μm, or 40μm. If the first light-shielding layer 6 is set too thick, the thickness of the display panel will increase; if the first light-shielding layer 6 is set too thin, the light-shielding effect on the metal traces 211 will be affected. Therefore, a reasonable thickness D will neither increase the thickness of the display panel nor affect the light-shielding effect on the metal traces 211.

[0081] In one possible implementation, please refer to Figure 7 The display area AA also includes a hole area 8 and a second light-shielding layer 7 that surrounds at least part of the hole area 8. The second light-shielding layer 7 is disposed in the same layer as the first light-shielding layer 6.

[0082] The light emitted from the display area AA will pass through the bezel area around the aperture area 8 and reach the surface of the camera element. When the camera element is working, it will be interfered with by the light leaking out of the pixels, affecting the image quality.

[0083] In this embodiment, by providing a second light-shielding layer 7 that at least partially surrounds the aperture area 8 in the display area AA, when light from the display area AA shines on the second light-shielding layer 7, the second light-shielding layer 7 will block the light from reaching the imaging element. Thus, when the imaging element is working, it is less susceptible to interference from light emitted by the pixels, thereby improving the image quality of the display panel.

[0084] In addition, since the second light-shielding layer 7 and the first light-shielding layer 6 are disposed in the same layer, the second light-shielding layer 7 and the first light-shielding layer 6 can be formed simultaneously by the same process, without the need for additional processes to set the second light-shielding layer 7, thereby reducing the corresponding manufacturing cost.

[0085] Preferably, the light density of at least a portion of the material on the side of the second light-shielding layer 7 away from the substrate 1 is greater than the light density of at least a portion of the material on the side of the second light-shielding layer 7 close to the substrate 1.

[0086] A light-shielding transition layer can be formed first by photolithography, and then particles with higher light density can be placed on the side of the light-shielding transition layer away from the substrate 1 by imprinting or implantation to form a second light-shielding layer 7. In this way, the light-shielding effect of the second light-shielding layer 7 can be greatly improved, thereby further reducing the interference of light emitted by the pixels on the imaging element, and thus further improving the image quality of the display panel.

[0087] Preferably, please refer to Figure 8 The second light-shielding layer 7 has a plurality of second uneven structures 71 on the side opposite to the substrate 1. The second uneven structures 71 and the first uneven structures 61 can be formed by the same process, and the shapes of the second uneven structures 71 and the first uneven structures 61 are the same. When light shines on the second uneven structures 71, some of the light is reflected within the second uneven structures 71 and absorbed by the second uneven structures 71, thereby further reducing the interference of light emitted by the pixels on the imaging element.

[0088] In one possible implementation, please refer again. Figure 8 The display panel also includes a cover plate 5 located on the side of the screen 2 opposite to the substrate 1. The cover plate 5 covers the display area AA and the non-display area AB, and extends to the side of the non-display area AB opposite to the display area AA. The cover plate 5 protects the film layers in the display panel, thereby improving the service life of the film layers in the display panel.

[0089] Preferably, please refer to Figure 9 and Figure 10 The display panel also includes a filling portion 9 located on the side of the first light-shielding layer 6 away from the display area AA. The filling portion 9 is disposed around the non-display area AB and is located on the side of the non-display area AB away from the display area AA. Along the direction perpendicular to the substrate 1, the filling portion 9 covers one side of the substrate 1 and covers the cover plate 5 near one side of the substrate 1. Along the direction perpendicular to the substrate 1, the side of the filling portion 9 away from the display area AA and the side of the cover plate 5 away from the display area AA are disposed on the same plane.

[0090] The filling part 9 prepared by the patterning process can cover the side of the screen, avoid light leakage from the side and protect the side of the display panel. The process control width is extremely small, and there is no need to reserve glue gaps, thereby further improving the display effect of the display panel and reducing the bezel width of the display panel.

[0091] Preferably, the filling portion 9 and the first light-shielding layer 6 are made of the same material. In this way, the filling portion 9 and the first light-shielding layer 6 can be formed simultaneously through a patterning process, thereby reducing the cost of setting the filling portion 9 and the first light-shielding layer 6.

[0092] Preferably, please refer to Figure 11The display panel also includes a frame 10. The side of the filling part 9 facing away from the display area AA and the side of the cover plate 5 facing away from the display area AA are both attached to the side wall of the frame 10. The bottom wall of the frame 10 is attached to the side of the substrate 1 facing away from the screen body 2. The frame 10 and the filling part 9 can protect the film layer of the display panel, prevent the frame 10 from being directly attached to the first light-shielding layer 6, and reduce the risk of separation of the upper and lower film layers of the first light-shielding layer 6 by external force.

[0093] In summary, by providing a first light-shielding layer 6 on the side of the metal trace 211 away from the substrate 1, and by having at least a portion of the material of the first light-shielding layer 6 on the side away from the substrate 1 have a higher light density than at least a portion of the material of the first light-shielding layer 6 on the side close to the substrate 1, the light-shielding effect of the metal trace 211 can be improved, the display defects caused by reflection and light transmission of the metal trace 211 can be mitigated, and the bezel width of the display panel can be reduced.

[0094] In one possible implementation, please refer to Figure 12 This application also provides a method for manufacturing a display panel, the method comprising:

[0095] S10: Provide a substrate 1.

[0096] S11: A screen body 2 is formed on one side of the substrate 1. The screen body includes a display area AA and a non-display area AB. The non-display area AB surrounds the display area AA and includes the border area of ​​the display panel. A first light-shielding layer 6 is disposed in the border area of ​​the display panel.

[0097] S12: A first light-shielding layer 6 covering the non-display area AB is formed on the side of the screen body 2 away from the substrate 1; the width of the first light-shielding layer 6 is less than or equal to the width of the non-display area AB of the screen body 2.

[0098] The screen 2 includes a metal layer 21, which includes a plurality of metal traces 211. The light density of at least a portion of the material on the side of the first light-shielding layer 6 away from the substrate 1 is greater than the light density of at least a portion of the material on the side of the first light-shielding layer 6 close to the substrate 1. The orthographic projection of the first light-shielding layer 6 on the substrate 1 at least partially coincides with the orthographic projection of the metal traces 211 on the substrate 1.

[0099] Compared to the ink layer 4 in related technologies that serves to shield the metal traces 211 from light, the width of the first light-shielding layer 6 formed by the above method in this embodiment will not exceed the maximum width of the display panel bezel. Therefore, compared to related technologies, this embodiment can reduce the bezel width of the display panel.

[0100] Since the light density of at least a portion of the material on the side of the first light-shielding layer 6 away from the substrate 1 is greater than the light density of at least a portion of the material on the side of the first light-shielding layer 6 close to the substrate 1, the light-shielding effect of the first light-shielding layer 6 is stronger than that of the ink layer 4 in the related art. This can reduce the light emitted by the AA pixel in the display area that reaches the metal trace 211, thereby reducing the light reflected by the metal trace 211 and ultimately improving the display quality of the display panel.

[0101] In one possible implementation, please refer to Figure 13 The step of forming a first light-shielding layer 6 on the side of the screen 2 facing away from the substrate 1 includes:

[0102] S121: A light-shielding transition layer is formed by at least one coating and exposure, the light-shielding transition layer including first light-shielding particles.

[0103] S122: Patterned light-shielding transition layer to form the first light-shielding layer 6.

[0104] The step of forming the first light-shielding layer also includes:

[0105] After the light-shielding transition layer is formed, a second light-shielding particle is disposed on the side of the light-shielding transition layer away from the substrate by imprinting or implantation process;

[0106] A light-shielding transition layer with second light-shielding particles is patterned to form the first light-shielding layer;

[0107] The optical density of the second light-blocking particle is greater than that of the first light-blocking particle.

[0108] The patterned light-shielding transition layer can simultaneously form a first light-shielding layer 6 and a filling portion 9. The filling portion 9 is disposed around the non-display area AB and is located on the side of the non-display area AB opposite to the display area AA. Along a direction perpendicular to the substrate 1, the filling portion 9 covers one side of the substrate 1 and covers the cover plate 5 near the side of the substrate 1. Along a direction perpendicular to the substrate 1, the side of the filling portion 9 opposite to the display area AA and the side of the cover plate 5 opposite to the display area AA are coplanar. The filling portion 9 can block the light reflected by the metal traces 211, thereby further reducing the light leaking from the bezel of the display panel and further improving the display effect of the display panel.

[0109] In some embodiments, since the light density of the second light-shielding particles is relatively high, ultraviolet light does not easily penetrate the material containing the second light-shielding particles. Therefore, when the material containing the second light-shielding particles is thick, the exposure and development process cannot be used to set the material containing the second light-shielding particles.

[0110] In this embodiment, a light-shielding transition layer including the first light-shielding particles is first formed on the side of the screen 2 away from the substrate 1 by exposure and development. Then, a second light-shielding particle is set on the side of the light-shielding transition layer away from the substrate 1 by imprinting or injection process, and finally the first light-shielding layer 6 is formed.

[0111] Specifically, carbon black particles with a large optical density and a particle size of 20-30 nm are sprayed onto the side of the light-shielding transition layer away from the substrate 1. Then, they are rolled using rollers or other mechanisms until the particles with the large optical density are pressed into the light-shielding transition layer. In this way, a first light-shielding layer 6 with stronger light-shielding ability can be formed by the above method.

[0112] In other embodiments, due to the limited penetrating power of ultraviolet light, it cannot penetrate thicker materials with higher optical density. Therefore, in this embodiment, a thinner layer of material with higher optical density that can be penetrated by ultraviolet light is applied each time. This process is repeated, and after multiple coatings, exposures, and developments, a first light-shielding layer 6 is formed on the side of the screen 2 facing away from the substrate 1. In this way, a first light-shielding layer 6 with stronger light-shielding ability can be formed through the above method, thereby improving the light-shielding effect on the metal traces 211.

[0113] In one possible implementation, this application also provides an electronic device that includes the display panel described in this application. The electronic device may include a device with image processing capabilities, such as a server, personal computer, laptop computer, etc. Because the electronic device includes the display panel described in this application, the display quality of the electronic device is better.

[0114] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0115] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A display panel, characterized in that, The display panel includes: Substrate; A screen located on one side of the substrate, the screen comprising a display area and a non-display area; A first light-shielding layer is located on the side of the screen body facing away from the substrate; the width of the first light-shielding layer is less than or equal to the width of the non-display area of ​​the screen body. The material of the first light-shielding layer includes black glue, and the light density of at least a portion of the material on the side of the first light-shielding layer away from the substrate is greater than the light density of at least a portion of the material on the side of the first light-shielding layer closer to the substrate.

2. The display panel according to claim 1, characterized in that, The screen includes a metal layer, the metal layer includes metal traces, and the orthographic projection of the first light-shielding layer on the substrate at least partially overlaps with the orthographic projection of the metal traces on the substrate.

3. The display panel according to claim 2, characterized in that, The first light-shielding layer includes a plurality of patterned light-shielding strips, the orthographic projection of the light-shielding strips on the substrate at least partially overlapping the orthographic projection of the metal traces on the substrate.

4. The display panel according to claim 1, characterized in that, The first light-shielding layer has a plurality of first concave and convex structures on the side opposite to the substrate.

5. The display panel according to claim 4, characterized in that, Along a direction perpendicular to the substrate, the cross-sectional shape of the first concave-convex structure is at least one of trapezoidal, boss-shaped, or serrated.

6. The display panel according to claim 1, characterized in that, The display panel also includes a cover plate located on the side of the first light-shielding layer opposite to the substrate. The cover plate covers the display area and non-display area of ​​the screen and extends to the side of the non-display area opposite to the display area.

7. The display panel according to claim 6, characterized in that, The display panel further includes a filling portion located on the side of the first light-shielding layer opposite to the display area. The filling portion is disposed around the screen body and is located on the side of the non-display area opposite to the display area.

8. The display panel according to claim 7, characterized in that, Along a direction perpendicular to the substrate, the filling portion covers one side of the substrate and the screen, and covers the cover plate near one side of the substrate.

9. The display panel according to claim 7, characterized in that, Along a direction perpendicular to the substrate, the side of the filling portion facing away from the display area is coplanar with the side of the cover plate facing away from the display area.

10. The display panel according to claim 7, characterized in that, The filling portion is made of the same material as the first light-shielding layer.

11. The display panel according to claim 7, characterized in that, The display panel also includes a frame, and the side of the filling portion facing away from the display area and the side of the cover plate facing away from the display area are both fitted to the side wall of the frame.

12. The display panel according to claim 11, characterized in that, The bottom wall of the frame is fitted to the side of the substrate opposite to the screen body.

13. The display panel according to claim 1, characterized in that, The display panel also includes an optical adhesive layer located on the side of the first light-shielding layer opposite to the substrate, and the optical adhesive layer also covers the display area of ​​the screen.

14. The display panel according to claim 13, characterized in that, Along a direction perpendicular to the substrate, the thickness of the first light-shielding layer is 20μm-40μm.

15. The display panel according to claim 1, characterized in that, The screen also includes a hole area located in the display area and a second light-shielding layer that at least partially surrounds the hole area, wherein the second light-shielding layer is disposed in the same layer as the first light-shielding layer.

16. The display panel according to claim 15, characterized in that, The light density of at least a portion of the material on the side of the second light-shielding layer away from the substrate is greater than the light density of at least a portion of the material on the side of the second light-shielding layer closer to the substrate.

17. The display panel according to claim 15, characterized in that, The second light-shielding layer has a plurality of second concave-convex structures on the side opposite to the substrate; The non-display area surrounds the display area.

18. A method for manufacturing a display panel, characterized in that, The method includes: Provide a substrate; A screen is formed on one side of the substrate, the screen including a display area and a non-display area located on at least one side of the display area; A first light-shielding layer is formed on the side of the screen body opposite to the substrate, covering the non-display area; the width of the first light-shielding layer is less than or equal to the width of the non-display area; The step of forming a first light-shielding layer on the side of the screen facing away from the substrate includes: A light-shielding transition layer is formed by at least one coating and exposure process, wherein the light-shielding transition layer includes first light-shielding particles; After the light-shielding transition layer is formed, a second light-shielding particle is disposed on the side of the light-shielding transition layer away from the substrate by imprinting or implantation process; The light-shielding transition layer is patterned to form the first light-shielding layer, wherein the light density of the second light-shielding particles is greater than the light density of the first light-shielding particles.

19. An electronic device, characterized in that, The electronic device includes the display panel as described in any one of claims 1-17.

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