Display panel, preparation method thereof and display device

Abstract

The embodiment of the invention provides a display panel, a preparation method thereof and a display device. The display panel comprises a plurality of light-emitting devices and a shading structure, at least part of the shading structure is located between the adjacent light-emitting devices, and the shading structure at least partially surrounds the light-emitting devices. Wherein the shading structure adjacent to the first light-emitting device comprises a first arc-shaped recess, and the first arc-shaped recess is adjacent to the first light-emitting device and at least partially surrounds the first light-emitting device. The display panel is beneficial to ensuring that the surface of the first light emitting device in the display panel is not covered with the shading structure, so that the light emitting rate of the first light emitting device is ensured, and the display effect of the display panel is improved. And the possibility that the side surface of the first light-emitting device is not completely shielded is facilitated, so that the light-emitting area of the first light-emitting device is further improved, the light-emitting rate of the first light-emitting device under a large visual angle is improved, and the visual effect of the display panel under the large visual angle is improved.

Description

Technical Field

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

[0002] In the preparation of display panels, in order to improve the contrast of the display panel, shading materials, such as black glue, are generally filled between the light-emitting elements. The substrate is blackened to obtain an extremely black appearance. However, when filling the shading material, the shading material is easily attracted by the side walls of the light-emitting device due to the surface tension of the material. In severe cases, it will crawl to the surface of the light-emitting device, causing the shading material to cover the side and surface of the light-emitting device, resulting in a decrease in the brightness of the light-emitting device and a decrease in the brightness viewing angle. Summary of the invention

[0003] In view of this, the present application provides a display panel and a method for manufacturing the same, and a display device to solve the above problems.

[0004] In a first aspect, an embodiment of the present application provides a display panel, including:

[0005] A plurality of pixels, wherein the plurality of light emitting devices in the pixels include the first light emitting device;

[0006] A light shielding layer, comprising a light shielding structure, at least a portion of which is located between adjacent light emitting devices and at least a portion of which surrounds the light emitting devices;

[0007] The shading structure adjacent to the first light emitting device includes a first arc-shaped recess, and the first arc-shaped recess is adjacent to the first light emitting device and at least partially surrounds the first light emitting device.

[0008] In a second aspect, an embodiment of the present application provides a display device, comprising a display panel provided in the first aspect.

[0009] In a third aspect, an embodiment of the present application provides a method for manufacturing a display panel, comprising:

[0010] Providing a temporary protective layer, the temporary protective layer comprising at least bumps;

[0011] providing an initial display panel, the initial display panel comprising a plurality of light emitting devices;

[0012] Laminating the temporary protective layer with the initial display panel; the temporary protective layer comprises a plurality of protrusions, wherein the plurality of protrusions comprises at least a first protrusion; the first protrusion is used to press the first light-emitting device in the initial display panel when the temporary protective layer is laminated with the initial display panel;

[0013] Preparing a light shielding layer between adjacent light emitting devices;

[0014] The temporary protective layer is removed to obtain a target display panel.

[0015] In the embodiment of the present application, the shading structure adjacent to the first light-emitting device in the display panel includes a first arc-shaped recess, and the first arc-shaped recess is adjacent to the first light-emitting device and at least partially surrounds the first light-emitting device, which is conducive to ensuring that the surface of the first light-emitting device in the display panel is not covered by the shading structure, thereby ensuring the light extraction rate of the first light-emitting device and improving the display effect of the display panel. In addition, the first arc-shaped recess is adjacent to the first light-emitting device and at least partially surrounds the first light-emitting device, which is conducive to making it possible that the side of the first light-emitting device is not completely blocked, thereby further increasing the light extraction area of ​​the first light-emitting device, and increasing the light extraction rate of the first light-emitting device at a wide viewing angle, and improving the visual effect of the display panel at a wide viewing angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 A schematic plan view of a display panel provided in an embodiment of the present application;

[0018] Figure 2 A method provided in the embodiment of the present application Figure 1 The cross section along the A-A' direction is shown in FIG.

[0019] Figure 3 A schematic diagram of the structure of a temporary protective layer and a light-emitting device provided in an embodiment of the present application;

[0020] Figure 4 A schematic plan view of another display panel provided in an embodiment of the present application;

[0021] Figure 5 A method provided in the embodiment of the present application Figure 4 Schematic diagram of the cross section along the B-B' direction;

[0022] Figure 6 A schematic diagram of the structure of another temporary protective layer and a light-emitting device provided in an embodiment of the present application;

[0023] Figure 7 Another embodiment provided in this application is Figure 4 Schematic diagram of the cross section along the B-B' direction;

[0024] Figure 8A schematic diagram of the structure of another temporary protective layer and a light-emitting device provided in an embodiment of the present application;

[0025] Fig. 9 Another embodiment provided in this application Figure 1 Schematic diagram of the cross section along the A-A' direction;

[0026] Fig.10 A schematic plan view of a display device provided in an embodiment of the present application;

[0027] Fig.11 A flow chart of manufacturing a display panel provided in an embodiment of the present application;

[0028] Fig.12 A flow chart of manufacturing a display panel provided in an embodiment of the present application;

[0029] Fig.13 A flow chart of manufacturing a display panel provided in an embodiment of the present application;

[0030] Fig.14 A flow chart of preparing another display panel provided in an embodiment of the present application. DETAILED DESCRIPTION

[0031] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0032] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0033] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "an", "the" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0034] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0035] In the description of this specification, it is necessary to understand that the words such as "substantially", "approximately", "approximately", "about", "roughly", "substantially" and the like described in the claims and embodiments of the present application refer to what can be generally recognized within a reasonable process operation range or tolerance range, rather than an exact value.

[0036] It should be understood that although the terms first, second, etc. may be used to describe light-emitting devices, arc-shaped depressions, horizontal planes, etc. in the embodiments of the present application, these should not be limited to these terms. These terms are only used to distinguish light-emitting devices, arc-shaped depressions, horizontal planes, etc. from each other. For example, without departing from the scope of the embodiments of the present application, the first light-emitting device may also be referred to as the second light-emitting device, and similarly, the second light-emitting device may also be referred to as the first light-emitting device. The applicant of this case has provided a solution to the problems existing in the prior art through careful and in-depth research.

[0037] Figure 1 A schematic plan view of a display panel provided in an embodiment of the present application, Figure 2 A method provided in the embodiment of the present application Figure 1 The cross section along the A-A' direction is shown in Fig. Figure 3 A schematic structural diagram of a temporary protective layer and a light-emitting device provided in an embodiment of the present application.

[0038] The present application embodiment provides a display panel 100, such as Figure 1 As shown, the display panel 100 includes a plurality of pixels 10, and the pixels 10 include a plurality of light emitting devices 20 including a first light emitting device 201. The plurality of light emitting devices 20 may be a plurality of light emitting devices 20 of different colors.

[0039] Combination Figure 2 As shown, the display panel 100 further includes a light shielding layer 30 , and the light shielding layer 30 includes a light shielding structure 301 .

[0040] In combination with the background technology, in the related art, after the light-emitting devices are prepared, there are gaps between the light-emitting devices. In order to improve the contrast of the display panel and reduce the interference caused by the reflection of ambient light, so that the display panel has a better visual effect of being all black, a shading material is usually filled between the light-emitting devices to form a shading structure. However, there is a situation where the shading material extends to the side or even the surface of the light-emitting device, which affects the light-emitting effect of the light-emitting device.

[0041] In order to avoid the above situation and ensure the light emitting effect of the light-emitting device 20 after the shading structure 301 is prepared, the embodiment of the present application adopts a preparation method so that at least a part of the obtained shading structure 301 is located between adjacent light-emitting devices 20 and the shading structure 301 at least partially surrounds the light-emitting device 20, thereby ensuring that the shading structure 301 surrounds the light-emitting device 20 as much as possible to achieve the effect of making the display panel 100 black as a whole, and reducing the part of the shading structure 301 located on the surface of the light-emitting device 20.

[0042] Alternatively, if Figure 3 As shown, before preparing the light-shielding structure 301, a temporary protective layer 40 is laid on the surface of the light-emitting device 20, and the temporary protective layer 40 includes convex points 401. The convex points 401 can cover the light-emitting device 20 and have a certain pressing force with the light-emitting device 20, which is conducive to ensuring that when the light-shielding material is filled to obtain the light-shielding structure 301, the light-shielding material will not penetrate between the convex points 401 and the light-emitting device 20, thereby avoiding the prepared light-shielding structure 301 being located on the surface of the light-emitting device 20. In addition, the temporary protective layer can be set not to completely cover the display panel 100, and optionally, the gaps between the light-emitting devices 20 are exposed, in order to reserve a hollow portion 402 filled with the light-shielding material, and the light-shielding material can enter from the hollow portion 402 and spread between the light-emitting devices 20.

[0043] As can be seen from the above content, the light shielding structure 301 is prepared after the temporary protective layer 40 covers the light emitting device 20, so that at least part of the formed light shielding structure 301 is located between adjacent light emitting devices 20 and the light shielding structure 301 at least partially surrounds the light emitting device 20. Due to the effect of the protrusion 401 pressing the light emitting device 20, part of the structure of the protrusion 401 will exceed the edge of the light emitting device 20 on the plane parallel to the display panel 100, and part of the structure of the protrusion 401 facing the edge of the light emitting device 20 in the direction perpendicular to the plane of the display panel 100 will protrude toward the light emitting device 20 to form a protrusion 401A, so the prepared light shielding structure 301 will have an arc-shaped depression 301A with a shape matching the protrusion 401A. As a result, the light shielding structure 301 surrounding the light emitting device 20 has an arc-shaped depression 301A. It should be noted that in the portion of the light shielding structure 301 where the arc-shaped depression 301A exists, there is still material covering the gap between the light emitting devices 20, so that the basic effect of the light shielding structure 301 can be achieved. The depression 301A is close to the side of the light emitting device 20 and may not completely block the side of the light emitting device, which is beneficial to improving the light extraction rate of the light emitting device 20 at a large viewing angle and increasing the light extraction area of ​​the light emitting device 20.

[0044] It should be noted that in the related art, the shading structure formed by filling the shading material between the light-emitting devices will have a relatively smooth arc-shaped surface, and the center of the depression on the arc-shaped surface is close to the middle of two adjacent light-emitting devices. This arc-shaped depression is naturally formed during the process of filling the shading material and curing without applying an external device, which is different from the arc-shaped depression 301A formed due to the temporary protective layer 40 proposed in the embodiment of the present application.

[0045] In the display panel 100, the shading structure 301 adjacent to the first light emitting device 201 includes a first arc-shaped recess 301AA, and the first arc-shaped recess 301AA is adjacent to the first light emitting device 201 and at least partially surrounds the first light emitting device 201. The first light emitting device 201 may represent a light emitting device 20 of one color among a plurality of light emitting devices 20, or the first light emitting device 201 may be a light emitting device that is greatly affected by the shading of the shading structure 301. The bumps 401 prepared in the temporary protective layer 40 include at least the first bumps 4011. In combination with the relationship between the arc-shaped recess 301A and the protrusion 401A mentioned above, the first bump 4011 covers the first light emitting device 201, and the protrusion 401A of the first bump 4011 may match the shape structure of the first arc-shaped recess 301AA.

[0046] In the embodiment of the present application, the light shielding structure 301 adjacent to the first light emitting device 201 in the display panel 100 includes a first arc-shaped recess 301AA, and the first arc-shaped recess 301AA is adjacent to the first light emitting device 201 and at least partially surrounds the first light emitting device 201, which is conducive to ensuring that the surface of the first light emitting device 201 in the display panel 100 is not covered by the light shielding structure 301, thereby ensuring the light extraction rate of the first light emitting device 201 and improving the display effect of the display panel 100. In addition, the first arc-shaped recess 301AA is adjacent to the first light emitting device 201 and at least partially surrounds the first light emitting device 201, which is conducive to making it possible that the side of the first light emitting device 201 is not completely blocked, thereby further increasing the light extraction area of ​​the first light emitting device 201, and increasing the light extraction rate of the first light emitting device 201 at a wide viewing angle, and improving the visual effect of the display panel 100 at a wide viewing angle.

[0047] Figure 4 A schematic plan view of another display panel provided in an embodiment of the present application is shown in FIG. Figure 5 A method provided in the embodiment of the present application Figure 4 Schematic diagram of the cross section along the B-B' direction, Figure 6 A schematic diagram of the structure of another temporary protective layer and a light-emitting device provided in an embodiment of the present application.

[0048] In one embodiment of the present application, Figure 4 , Figure 5As shown, the pixel 10 further includes a second light-emitting device 202, and the light-shielding structure 301 adjacent to the second light-emitting device 202 includes a second arc-shaped recess 301AB, and the second arc-shaped recess 301AB is adjacent to the second light-emitting device 202 and at least partially surrounds the second light-emitting device 202. Optionally, the second light-emitting device 202 is a light-emitting device of a different color from the first light-emitting device 201. In the preparation of the display panel 100, there are some differences in the influence of the light-shielding structure 301 on the first light-emitting device 201 and the second light-emitting device 202.

[0049] The above embodiment mentions that the temporary protective layer 40 is used to protect the light emitting device 20, and the process of preparing the light shielding structure 301 is not repeated here. Figure 6 As shown, it should be noted that, optionally, a second protrusion 401B specifically covering the second light-emitting device 202 can be provided on the temporary protective layer 40, and there is a certain pressing force between the second protrusion 401B and the second light-emitting device 202, so that the second protrusion 4012 produces a protrusion 401A, and the protrusion 401A produced by the second protrusion 4012 cooperates with the second arc-shaped recess 301AB structure.

[0050] Furthermore, the second arc-shaped recess 301AB is adjacent to the second light-emitting device 201 and at least partially surrounds the second light-emitting device 202, which is conducive to preventing the side of the second light-emitting device 202 from being completely blocked, thereby further increasing the light-emitting area of ​​the second light-emitting device 202, and increasing the light-emitting rate of the second light-emitting device 202 at a wide viewing angle, thereby improving the visual effect of the display panel 100 at a wide viewing angle. It should be noted that when the first light-emitting device 201 and the second light-emitting device 202 are adjacent, the first arc-shaped recess 301AA surrounding the first light-emitting device 201 and the structure surrounding the second arc-shaped recess 301AB may be disconnected, so that the first light-emitting device 201 and the second light-emitting device 202 are blocked, which is conducive to avoiding light crosstalk between adjacent light-emitting devices 20.

[0051] In the embodiment of the present application, the obtained first arc-shaped depression 301AA and the second arc-shaped depression 301AB have different shapes. This may be due to the following reasons: optionally, the convex point 401 structure of corresponding size of the first light-emitting device 201 and the second light-emitting device 202 is adaptively set, so that the first arc-shaped depression 301AA and the second arc-shaped depression 301AB have different shapes. Optionally, according to the degree of influence of the light shielding structure 301 on the first light-emitting device 201 and the second light-emitting device 202, the pressing force and deformation amount between the first convex point 4011 and the second convex point 4012 and the corresponding light-emitting device 20 are set to be different. To sum up, the first arc-shaped recess 301AA and the second arc-shaped recess 301AB obtained by adaptively setting the embodiment of the present application have different shapes, which is conducive to more flexible preparation of the shading structure 301, so as to better improve the light-emitting effect of the light-emitting device 20. The first arc-shaped recess 301AA and the second arc-shaped recess 301AB required can be flexibly adjusted according to the light-emitting needs of the first light-emitting device 201 and the second light-emitting device 202.

[0052] In one embodiment of the present application, continue to refer to Figure 4-Figure 5 As shown, along a direction perpendicular to the plane where the display panel 100 is located, the depth of the first arc-shaped recess 301AA is greater than the depth of the second arc-shaped recess 301AB.

[0053] In the embodiment of the present application, the depth of the first arc-shaped recess 301AA is set to be greater than the depth of the second arc-shaped recess 301AB, which is conducive to improving the applicability of the embodiment of the present application, so that the light-shielding structure 301 around the first light-emitting device 201 and the second light-emitting device 202 can be set differently when the conditions are different. For example, if the first light-emitting device 201 is closer to the adjacent light-emitting device 20, when the light-shielding material is filled, the surface tension of the light-shielding material around the first light-emitting device 201 is also greater due to the smaller gap around the first light-emitting device 201, and the surface of the first light-emitting device 201 is more easily covered by the light-shielding material. If the gap around the second light-emitting device 201 is larger, the surface tension of the light-shielding material around the second light-emitting device 201 is also weaker, so that the surface of the second light-emitting device 201 is less threatened by the light-shielding material. Therefore, the pressing force applied by the first protrusion 4011 on the surface of the first light-emitting device 201 can be set to be greater than the pressing force applied by the second protrusion 4012 on the surface of the second light-emitting device 202, so that the depth of the first arc-shaped recess 301AA is greater than the depth of the second arc-shaped recess 301AB.

[0054] In one embodiment of the present application, continue to refer to Figure 4 , Figure 5As shown, the curvature of the first arc-shaped recess 301AA is greater than the curvature of the second arc-shaped recess 301AB, which is beneficial to further improve the diversity of the prepared shading structure 301, and adaptively adjust the first arc-shaped recess 301AA and the second arc-shaped recess 301AB according to the influence of the shading structure 301 on the light-emitting device 20.

[0055] Figure 7 Another embodiment provided in this application is Figure 4 Schematic diagram of the cross section along the B-B' direction.

[0056] In one embodiment of the present application, Figure 4 , Figure 7 As shown, the pixel 10 further includes a second light-emitting device 202, and the light-shielding structure 301 adjacent to the second light-emitting device 202 includes a second arc-shaped recess 301AB, and the second arc-shaped recess 301AB is adjacent to the second light-emitting device 202 and at least partially surrounds the second light-emitting device 202. Optionally, the second light-emitting device 202 is a light-emitting device of a different color from the first light-emitting device 201. In the preparation of the display panel 100, there are some differences in the influence of the light-shielding structure 301 on the first light-emitting device 201 and the second light-emitting device 202.

[0057] The above embodiment mentions that the temporary protective layer 40 is used to protect the light emitting device 20, and the process of preparing the light shielding structure 301 is not repeated here. It should be noted that, optionally, a second convex point 401B specifically covering the second light emitting device 202 can be provided on the temporary protective layer 40, and there is a certain pressing force between the second convex point 401B and the second light emitting device 202, so that the second convex point 4012 generates a protrusion 401A, and the protrusion 401A generated by the second convex point 4012 cooperates with the second arc-shaped recess 301AB structure.

[0058] Furthermore, the second arc-shaped recess 301AB is adjacent to the second light-emitting device 201 and at least partially surrounds the second light-emitting device 202, which is conducive to preventing the side of the second light-emitting device 202 from being completely blocked, thereby further increasing the light-emitting area of ​​the second light-emitting device 202, and increasing the light-emitting rate of the second light-emitting device 202 at a wide viewing angle, thereby improving the visual effect of the display panel 100 at a wide viewing angle. It should be noted that when the first light-emitting device 201 and the second light-emitting device 202 are adjacent, the first arc-shaped recess 301AA surrounding the first light-emitting device 201 and the structure surrounding the second arc-shaped recess 301AB may be disconnected, so that the first light-emitting device 201 and the second light-emitting device 202 are blocked, which is conducive to avoiding light crosstalk between adjacent light-emitting devices 20.

[0059] In the embodiment of the present application, the first arc-shaped recess 301AA and the second arc-shaped recess 301AB have the same shape, which is conducive to the unified preparation of the protrusion 401 in the temporary protective layer 40, and is conducive to unifying the pressing force between the first protrusion 4011, the second protrusion 4012 and the corresponding light-emitting device 20, thereby reducing the operational difficulty in the process of preparing the shading structure 30, improving the structural regularity in the display panel 100, improving the preparation efficiency of the display panel 100, and reducing the preparation cost.

[0060] In one embodiment of the present application, continue to refer to Figure 4 As shown, the pixel 10 also includes a second light-emitting device 202 and a third light-emitting device 203, and the first light-emitting device 201 is located between the second light-emitting device 202 and the third light-emitting device 203. It can be seen from this that the first light-emitting device 201 and the second light-emitting device 202 and the third light-emitting device 203 in the same pixel 10 are arranged relatively compactly, so that the first light-emitting device 201 located in the middle is most affected by the cover of the light-shielding structure 301. The distance between the second light-emitting device 202 and the third light-emitting device 203 and the light-emitting device 20 in the adjacent pixel 10 is large, and they are less affected by the cover of the light-shielding structure 301. Therefore, in combination with the above embodiments, it can be known that when preparing the light-shielding structure 301, a greater degree of protection measures can be given to the first light-emitting device 201 in a differentiated manner, thereby reducing the risk of the first light-emitting device 201 being covered by the light-shielding structure 301 and improving the light-emitting effect of the first light-emitting device 201.

[0061] Figure 8 A schematic diagram of the structure of another temporary protective layer and a light-emitting device provided in an embodiment of the present application.

[0062] Alternatively, if Figure 8 As shown, the temporary protective layer 40 also includes a third convex point 4013 pressed against the third light-emitting device 203. At this time, the shading structure 301 prepared around the third light-emitting device 203 includes a third arc-shaped depression. Optionally, the third arc-shaped depression has the same shape as the second arc-shaped depression 301AB. In addition, the area, shape, and height of the first convex point 4011, the second convex point 4012, and the third convex point 4013 can be designed to be the same or different according to actual conditions.

[0063] In one embodiment of the present application, the light emitting color of the first light emitting device 201 is green. In the preparation of the display panel 100, taking the first light emitting device 201, the second light emitting device 202, and the third light emitting device 203 as a green light emitting device, a blue light emitting device, and a red light emitting device, respectively, the green light emitting device is usually prepared between the red light emitting device and the blue light emitting device, and the green light emitting device is more easily covered by the shading structure 301. In the embodiment of the present application, the first arc-shaped recess 301AA of the shading structure 301 around the green light emitting device is deeper or has a larger curvature, which is conducive to reducing the risk of the green light emitting device being blocked and increasing the light emitting area of ​​the green light emitting device; at the same time, the embodiment of the present application also provides a certain practical reference for relevant technical personnel, and improves the usability of the embodiment of the present application.

[0064] Fig. 9 Another embodiment provided in this application Figure 1 Schematic diagram of the cross section along the A-A' direction.

[0065] In one embodiment of the present application, continue to combine Figure 1 , Figure 2 As shown, the plane where the surface of the first light emitting device 201 facing the light emitting surface of the display panel 100 is located is the first horizontal plane L1, and the plane where the surface of the shading structure 301 adjacent to the first light emitting device 201 facing the light emitting surface of the display panel 100 is located is the second horizontal plane L2.

[0066] like Fig. 9 As shown, the second horizontal plane L2 is lower than the first horizontal plane L1, which can adaptably reduce the volume of the shading material filled in the shading layer 30 so that the second horizontal plane is lower than the first horizontal plane L1, which is beneficial to further reduce the risk of the shading structure 301 covering the surface of the light-emitting device 20.

[0067] Or, if Figure 1 As shown, the second horizontal plane L2 is aligned with the first horizontal plane L1 , which is beneficial to ensure that the light shading structure 301 does not cover the surface of the light emitting device 20 when the filling volume of the light shading structure 301 is relatively ideal.

[0068] Fig.10 A schematic plan view of a display device provided in an embodiment of the present application.

[0069] The present application embodiment provides a display device 200, such as Fig.10 As shown, the display device 200 includes the display panel 100 described in any one of the above embodiments. Optionally, the display device 200 can be a device used for display, such as a mobile phone, a computer, a television, etc.

[0070] In the display device 200, the shading structure 301 adjacent to the first light emitting device 201 in the display panel 100 includes a first arc-shaped recess 301AA, and the first arc-shaped recess 301AA is adjacent to the first light emitting device 201 and at least partially surrounds the first light emitting device 201, which is conducive to ensuring that the surface of the first light emitting device 201 in the display panel 100 is not covered by the shading structure 301, thereby ensuring the light extraction rate of the first light emitting device 201 and improving the display effect of the display panel 100. In addition, the first arc-shaped recess 301AA is adjacent to the first light emitting device 201 and at least partially surrounds the first light emitting device 201, which is conducive to making it possible that the side of the first light emitting device 201 is not completely blocked, thereby further increasing the light extraction area of ​​the first light emitting device 201, and increasing the light extraction rate of the first light emitting device 201 at a wide viewing angle, and improving the visual effect of the display panel 100 at a wide viewing angle.

[0071] Fig.11 A flow chart of manufacturing a display panel provided in an embodiment of the present application.

[0072] The present application embodiment provides a method M1 for manufacturing a display panel 100. The method M1 can be used to reduce the risk of the light shielding structure 301 covering the surface of the light emitting device 20. Fig.11 As shown, the preparation method proposed in the embodiment of the present application includes:

[0073] S1: Provide a temporary protective layer 40, the temporary protective layer 40 at least including a convex point 401. In combination with the above content, it can be known that the convex point 401 in the temporary protective layer 40 can be used to press with the light-emitting device 20, so as to prevent the light-shielding material from penetrating between the light-emitting device 20 and the convex point 401, so that the light-shielding structure 301 does not cover the surface of the light-emitting surface of the light-emitting device 20 facing the display panel 100. Optionally, the method for preparing the temporary protective layer 40 can be nano-imprinting, photolithography patterning plus surface coating, etc.

[0074] S2: providing an initial display panel 100A, wherein the initial display panel 100A includes a plurality of light emitting devices 20. At this time, the initial display panel 100A is in a stage where the light emitting devices 20 are prepared, and the light shielding layer 30 is not prepared yet.

[0075] S3: attaching the temporary protective layer 40 to the initial display panel 100A. The temporary protective layer 40 includes a plurality of protrusions 401, wherein the plurality of protrusions 401 include at least a first protrusion 4011, and the first protrusion 4011 is used to press the first light emitting device 201 in the initial display panel 100A when the temporary protective layer 40 is attached to the initial display panel 100A.

[0076] S4; prepare a shading layer 30 between adjacent light emitting devices 20. At this time, the surface of the light emitting device 20 is pressed and protected by the bumps 401, which is conducive to making the prepared shading layer 30 surround the light emitting device 20 as much as possible without blocking the surface of the light emitting device 20.

[0077] S5: Remove the temporary protective layer 40 to obtain the target display panel 100B. After the light shielding layer 30 is prepared with the assistance of the temporary protective layer 40, the temporary protective layer 40 may not occupy the film structure of the display panel 100. When the temporary protective layer 40 is removed, the light shielding structure 301 in the light shielding layer 30 has also been solidified and will no longer crawl toward the surface of the light emitting device 20. Optionally, at this time, the target display panel 100B is in a state where the light emitting device 20 and the light shielding structure 301 are exposed. In the subsequent process, a protective layer may be prepared on the surface of the target display panel 100B to obtain the display panel 100.

[0078] In one embodiment of the present application, continue to refer to Fig.11 As shown, in a direction parallel to the plane where the initial display panel 100A is located, the area of ​​the first protrusion 4011 is greater than or equal to the area of ​​the first light-emitting device 201, which is conducive to ensuring that the first protrusion 4011 completely covers the surface of the first light-emitting device 201, thereby ensuring that the surface of the first light-emitting device 201 is completely protected and will not be covered by the shading material.

[0079] In one embodiment of the present application, the material included in the prepared bumps 401 is hydrophobic, which is conducive to ensuring that the light-shielding material in a flowing state will not penetrate into the surface of the light-emitting device 20 through the bumps 401 when it is filled between the light-emitting devices 20. In addition, in the process of using the temporary protective layer 40 for a long time to prepare the light-shielding layer 30, the hydrophobic material usually also has a certain corrosion resistance, which is conducive to improving the reliability of the temporary protective layer 40 during the application process. Optionally, the material of the bumps 401 is an organic silicon compound, such as silica gel.

[0080] In one embodiment of the present application, the bump 401 is elastic, which is conducive to the applicability of the bump 401 to the technical solution of the present application, so that the bump 401 can be flexibly pressed onto the surface of the light-emitting device 20, and when the bump 401 is elastic, its own structural ductility is also good, and during the pressing process, it can be covered to the surface of the light-emitting device 20 in a conformal manner, thereby improving the bonding effect between the bump 401 and the light-emitting device 20.

[0081] In one embodiment of the present application, continue to refer to Fig.11 As shown, the structure of the bump 401 is in the shape of a cube or a half-rugby ball. The surface of the bump 401 structure of this type of shape facing the light-emitting device 20 is relatively flat and the surface area facing the light-emitting device 20 is relatively large, which is conducive to achieving good fitting between the bump 401 and the light-emitting device 20.

[0082] Fig.12 A flow chart of manufacturing a display panel provided in an embodiment of the present application.

[0083] In one embodiment of the present application, the temporary protection layer 40 includes a hollow portion 402, and the hollow portion 402 can expose at least part of the gap between adjacent light emitting devices 20. Fig.11 , Fig.12 As shown, S4: preparing a light shielding layer 30 between adjacent light emitting devices 20, including:

[0084] S41: Inject the shading material Q1 onto the initial display panel 100A through the hollow portion 402. The shading material Q1 can be a black glue material. Usually, the shading material Q1 has a certain fluidity. After being injected into the initial display panel 100A through the hollow portion 402, the shading material Q1 can flow relatively evenly into the gaps between the light-emitting devices 20. The shading material Q1 flowing between adjacent light-emitting devices 20 is blocked by the convex point 401, making it difficult for it to crawl to the surface of the light-emitting device 20. The protruding portion 401A of the convex point 401 protruding from the light-emitting device 20 also occupies part of the volume of the gap between adjacent light-emitting devices 20, and it is obvious that this part will not be filled by the shading material Q1.

[0085] S42: Curing the light shielding material Q1 to obtain the light shielding layer 30. After the light shielding material Q1 is filled, in order to avoid its unstable flow, it is cured to obtain a stable structure shape, that is, the light shielding layer 30. Combined with the preparation process of S41, the light shielding layer 30 surrounding the light emitting device 20 at this time includes an arc-shaped recess 301A that matches the shape structure of the protrusion 401A.

[0086] Fig.13 A flow chart of manufacturing a display panel provided in an embodiment of the present application.

[0087] In one embodiment of the present application, Fig.11 , Fig.13 As shown, S3: attaching the temporary protective layer to the initial display panel, including:

[0088] S31: attaching multiple temporary protective layers 30 to at least different light emitting device groups 20A. The light emitting device group 20A includes multiple light emitting devices 20. The light emitting device group 20A can protect the light emitting devices 20 distributed in a row or a column, or the light emitting device group 20A can include multiple light emitting devices 20 distributed in an array.

[0089] S4: preparing a light shielding layer 30 between adjacent light emitting devices 20, including:

[0090] S41 : injecting a light shielding material Q1 onto the initial display panel 100A through the gaps between adjacent temporary protective layers 30 .

[0091] S42 : curing the light shielding material Q1 to obtain the light shielding layer 30 .

[0092] In the embodiment of the present application, multiple temporary protective layers 30 are used to bond with different light-emitting device groups 20A respectively, which is conducive to reserving more gaps for injecting the light-shielding material Q1 during the process of injecting the light-shielding material Q1, so that the light-shielding material Q1 can be injected at different positions, which is conducive to avoiding the problem of slow filling speed of the light-shielding material Q1 when there are only a few hollow parts 402, and is conducive to increasing the speed of filling the light-shielding material Q1 and improving the efficiency of preparing the light-shielding layer 30. In addition, multiple temporary protective layers 30 are bonded separately, which is conducive to better bonding the temporary protective layer 30 with the light-emitting device 20 and improving the uniformity of the bonding force applied by the temporary protective layer 30.

[0093] In one embodiment of the present application, continue to refer to Fig.12 , Fig.13 As shown, S42 solidifies the light shielding material Q1 to obtain a light shielding layer 30, including:

[0094] The light shielding material Q1 is cured by ultraviolet light H1 to obtain a light shielding layer 30 .

[0095] In the embodiment of the present application, the shading material Q1 used is a UV-curable material, which is beneficial for increasing the curing speed of the shading material Q1 with the assistance of the UV light H1, thereby further improving the preparation efficiency of the shading layer 30.

[0096] In one embodiment of the present application, the material included in the temporary protective layer 40 is transparent to the ultraviolet light H1. Before the light shielding material Q1 is cured, the temporary protective layer 40 needs to be continuously pressed against the light emitting device 20, thereby ensuring that the light shielding material Q1 does not penetrate between the light emitting device 20 and the bump 401. Therefore, setting the material included in the temporary protective layer 40 to be transparent to the ultraviolet light H1 is conducive to ensuring that the light shielding material Q1 can be cured when the temporary protective layer 40 is pressed against the light emitting device 20, thereby ensuring the functionality of the temporary protective layer 40.

[0097] Fig.14 A flow chart of preparing another display panel provided in an embodiment of the present application.

[0098] In one embodiment of the present application, Fig.14 As shown, the plurality of protrusions 401 further include a second protrusion 4012 , and the second protrusion 4012 is used to be pressed with the second light emitting device 202 in the initial display panel 100A when the temporary protection layer 40 is attached to the initial display panel 100A.

[0099] In the above-mentioned S3: attaching the temporary protective layer 40 to the initial display panel 100A, the temporary protective layer 40 includes a plurality of protrusions 401, wherein the plurality of protrusions 401 include at least a first protrusion 4011, and the first protrusion 4011 is used to, during the preparation process of pressing the temporary protective layer 40 with the first light-emitting device 201 in the initial display panel 100A when the temporary protective layer 40 is attached to the initial display panel 100A, simultaneously press the second protrusion 4012 on the temporary protective layer 40 with the second light-emitting device 202.

[0100] Optionally, the first light emitting device 201 and the second light emitting device 202 are two light emitting devices 20 of different colors, and the first bumps 4011 and the second bumps 4012 are used to adaptively press the corresponding light emitting devices 20 , which is beneficial to improve the reliability of the temporary protective layer 40 .

[0101] In one embodiment of the present application, reference Fig.14 As shown, in a direction parallel to the plane where the initial display panel 100A is located, the area of ​​the second protrusion 4012 is greater than or equal to the area of ​​the second light-emitting device 202, which is conducive to ensuring that the second protrusion 4012 completely covers the surface of the second light-emitting device 202, thereby ensuring that the surface of the second light-emitting device 202 is completely protected and will not be covered by the shading material Q1.

[0102] In one embodiment of the present application, continue to refer to Fig.14 As shown, along the direction perpendicular to the plane where the temporary protective layer 40 is located, the height of the first bump 4011 is greater than the height of the second bump 4012, and the first light-emitting device 201 covered by the first bump 4011 may be a device with a higher risk of being blocked by the shading layer 30, which can adaptively improve the protection of the first light-emitting device 201.

[0103] In the embodiment of the present application, the height of the first protrusion 4011 is greater than the height of the second protrusion 4012 along a direction perpendicular to the plane where the temporary protective layer 40 is located. This is beneficial for the temporary protective layer 40 to apply the same pressing force. Due to the higher height of the first protrusion 4011, the degree of pressing of the first protrusion 4011 against the light-emitting device 200 can be greater. For example, the protrusion 401A of the first protrusion 4011 toward the side of the light-emitting device 20 is higher, and the first arc-shaped recess 301AA formed has a greater depth and a greater curvature.

[0104] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A display panel, characterized in that: include: A plurality of pixels, wherein the plurality of light emitting devices including the first light emitting device are included in the pixels; a light shielding layer, comprising a light shielding structure, at least a portion of which is located between adjacent light emitting devices and at least partially surrounds the light emitting devices; The shading structure adjacent to the first light emitting device includes a first arc-shaped recess, and the first arc-shaped recess is adjacent to the first light emitting device and at least partially surrounds the first light emitting device.

2. The display panel according to claim 1, characterized in that: The pixel further includes a second light emitting device, the light shielding structure adjacent to the second light emitting device includes a second arc-shaped recess, the second arc-shaped recess is adjacent to the second light emitting device and at least partially surrounds the second light emitting device; The first arc-shaped recess and the second arc-shaped recess have different shapes.

3. The display panel according to claim 2, characterized in that: Along a direction perpendicular to a plane where the display panel is located, a depth of the first arc-shaped recess is greater than a depth of the second arc-shaped recess.

4. The display panel according to claim 2, characterized in that: The curvature of the first arc-shaped recess is greater than the curvature of the second arc-shaped recess.

5. The display panel according to claim 1, characterized in that: The pixel further includes a second light emitting device, the light shielding structure adjacent to the second light emitting device includes a second arc-shaped recess, the second arc-shaped recess is adjacent to the second light emitting device and at least partially surrounds the second light emitting device; The first arc-shaped recess has the same shape as the second arc-shaped recess.

6. The display panel according to claim 2 or 5, characterized in that: The pixel further includes a second light emitting device and a third light emitting device, and the first light emitting device is located between the second light emitting device and the third light emitting device.

7. The display panel according to claim 6, characterized in that: The light output color of the first light emitting device is green.

8. The display panel according to claim 1, characterized in that: The plane where the surface of the first light emitting device facing the light emitting surface of the display panel is located is a first horizontal plane, and the plane where the surface of the light shielding structure adjacent to the first light emitting device facing the light emitting surface of the display panel is located is a second horizontal plane; The second horizontal plane is lower than the first horizontal plane, or the second horizontal plane is aligned with the first horizontal plane.

9. A display device, characterized in that: Comprising the display panel as described in any one of claims 1-8.

10. A method for preparing a display panel, characterized in that: include: Providing a temporary protective layer, the temporary protective layer comprising at least bumps; providing an initial display panel, the initial display panel comprising a plurality of light emitting devices; Laminating a temporary protective layer to an initial display panel; the temporary protective layer comprises a plurality of convex points, wherein the plurality of convex points comprises at least a first convex point; The first protrusion is used to press the first light-emitting device in the initial display panel when the temporary protection layer is attached to the initial display panel; Preparing a light shielding layer between adjacent light emitting devices; The temporary protective layer is removed to obtain a target display panel.

11. The preparation method according to claim 10, characterized in that: In a direction parallel to the plane where the initial display panel is located, the area of ​​the first protrusion is greater than or equal to the area of ​​the first light emitting device.

12. The preparation method according to claim 10, characterized in that: The material included in the protrusions is hydrophobic.

13. The preparation method according to claim 10, characterized in that: The protrusions are elastic.

14. The preparation method according to claim 10, characterized in that: The structure of the protrusion is a cube or a half-rugby ball.

15. The preparation method according to claim 10, characterized in that: The temporary protective layer includes a hollow portion; the light shielding layer is prepared between adjacent light emitting devices, comprising: injecting a light shielding material onto the initial display panel through the hollow portion; The light-shielding material is cured to obtain the light-shielding layer.

16. The preparation method according to claim 10, characterized in that: The step of laminating the temporary protective layer to the initial display panel comprises: The plurality of temporary protective layers are respectively attached to at least different light-emitting device groups; the light-emitting device group includes a plurality of the light-emitting devices; The step of preparing a light shielding layer between adjacent light emitting devices comprises: injecting a light shielding material onto the initial display panel through gaps between adjacent temporary protective layers; The light-shielding material is cured to obtain the light-shielding layer.

17. The preparation method according to claim 15 or 16, characterized in that: The step of curing the light-shielding material to obtain the light-shielding layer comprises: The light-shielding material is cured by ultraviolet light to obtain the light-shielding layer.

18. The preparation method according to claim 17, characterized in that: The temporary protective layer includes a material that is transparent to ultraviolet light.

19. The preparation method according to claim 10, characterized in that: The plurality of protrusions further include second protrusions, and the second protrusions are used to be pressed together with the second light emitting device in the initial display panel when the temporary protection layer is attached to the initial display panel.

20. The preparation method according to claim 19, characterized in that: In a direction parallel to the plane where the initial display panel is located, the area of ​​the second protrusion is greater than or equal to the area of ​​the second light emitting device.

21. The preparation method according to claim 19, characterized in that: Along a direction perpendicular to the plane where the temporary protective layer is located, the height of the first protrusion is greater than the height of the second protrusion.

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