Display panel, preparation method of display panel and display device

Abstract

The invention discloses a display panel, a preparation method of the display panel and a display device. The display panel comprises a first area and a second area, the light transmittance of the first area is smaller than that of the second area; the display panel further comprises a substrate base plate. The metal layer is located in the first region; the shading part is located in the first area, and the shading part is located on the side, away from the substrate, of the metal layer; the transparent part is located in the second area, and at least part of the shading part is adjacent to the transparent part; a hydrophobic structure is arranged on the surface of one side, far away from the substrate, of the transparent part, so that the residual quantity of a shading material on the surface of the transparent part can be reduced, the light transmittance of the display screen can be improved, and a retaining wall structure does not need to be additionally arranged between the shading part and the transparent part; the pixel density of the display panel can be improved on the basis of ensuring the shading effect, and the transparent display effect of the display screen is improved.

Description

Technical Field

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

[0002] As a new technology that has emerged in recent years, transparent display technology has attracted much attention. This technology has greatly expanded the scenarios and scope of display applications and also provided convenience for people's lives.

[0003] The key component of transparent display technology is the transparent display panel, which looks like a piece of transparent glass when it is closed. When it is working, the viewer can not only see the content displayed on the display panel, but also see the objects behind it through the display panel. Therefore, the transparent display panel is required to have not only ultra-high transmittance but also excellent display effect.

[0004] Due to the limitation of the manufacturing process, the existing transparent display panel has residual light-shielding ink in the transparent area where the metal structure is not set, which affects the overall transmittance of the transparent display screen and thus affects the transparent display effect of the display screen. Summary of the invention

[0005] The present invention provides a display panel, a method for preparing the display panel and a display device, so as to improve the light transmittance of a transparent display panel.

[0006] According to one aspect of the present invention, there is provided a display panel, comprising: a first region and a second region; the light transmittance of the first region is less than the light transmittance of the second region;

[0007] The display panel further includes:

[0008] substrate substrate;

[0009] A metal layer, located on one side of the substrate and located in the first area;

[0010] A light shielding portion, located in the first region, the light shielding portion is located on a side of the metal layer away from the base substrate;

[0011] a transparent portion, located in the second region, and at least a portion of the light shielding portion is adjacent to the transparent portion;

[0012] A hydrophobic structure is disposed on a surface of the transparent portion that is away from the base substrate.

[0013] According to another aspect of the present invention, a method for manufacturing a display panel is provided, wherein the display panel comprises a first region and a second region, the light transmittance of the first region is lower than the light transmittance of the second region, and the method for manufacturing the display panel comprises:

[0014] providing a substrate base plate;

[0015] In the first region, a metal layer is formed on one side of the substrate;

[0016] In the second region, a transparent portion is formed on a side of the base substrate where the metal layer is provided;

[0017] forming a hydrophobic structure on a surface of the transparent portion away from the base substrate;

[0018] A light shielding portion is formed on a side of the metal layer away from the base substrate; at least a portion of the light shielding portion is adjacent to the transparent portion.

[0019] According to another aspect of the present invention, a display device is provided, characterized in that it comprises the above-mentioned display panel.

[0020] The display panel provided by the present invention has a metal layer arranged in a first area with a lower light transmittance on a base substrate for forming at least one of a pixel circuit and a signal wiring so as to realize the display function of the display panel, and a transparent portion is arranged in a second area with a higher light transmittance to ensure the light transmittance of the display panel, and a shading portion is formed on a side of the metal layer in the first area away from the base substrate to shield the metal wiring in the metal layer, thereby reducing reflectivity, improving contrast and reducing color deviation; by arranging a hydrophobic structure on the surface of the transparent portion away from the base substrate, the residual amount of shading material on the surface of the transparent portion can be reduced, thereby improving the light transmittance of the display screen, and there is no need to arrange a retaining wall structure between the shading portion and the transparent portion, so that the pixel density of the display panel can be improved while ensuring the shading effect, thereby improving the transparent display effect of the display screen.

[0021] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 is a schematic structural diagram of a display panel provided by an embodiment of the present invention;

[0024] Figure 2 is a structural schematic diagram of a transparent portion provided by an embodiment of the present invention;

[0025] Figure 3 is a schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0026] Figure 4 is a schematic structural diagram of another transparent portion provided by an embodiment of the present invention;

[0027] Figure 5 is a structural schematic diagram of another display panel provided by an embodiment of the present invention;

[0028] Figure 6 is a structural schematic diagram of another display panel provided by an embodiment of the present invention;

[0029] Figure 7 is a schematic structural diagram of another transparent portion provided by an embodiment of the present invention;

[0030] Figure 8 is a structural schematic diagram of another display panel provided by an embodiment of the present invention;

[0031] Fig. 9 is a flow chart of a method for preparing a display panel provided by an embodiment of the present invention;

[0032] Fig.10 is a diagram of a manufacturing process of a display panel provided by an embodiment of the present invention;

[0033] Fig.11 is a diagram of a preparation process of a hydrophobic structure provided by an embodiment of the present invention;

[0034] Fig.12 is a diagram of the preparation process of another hydrophobic structure provided by an embodiment of the present invention;

[0035] Fig.13 is a flow chart of another method for preparing a display panel provided by an embodiment of the present invention;

[0036] Fig.14 is a diagram of another process of preparing a display panel provided by an embodiment of the present invention;

[0037] Fig.15 It is a structural schematic diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0039] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0040] As described in the background technology, when preparing a display panel, due to the limitation of the preparation process, after the preparation of the metal layer and the transparent part is completed, when the black ink for shading is formed around the light-emitting element located in the display area, the black ink will spread to the surface of the transparent part or splash to the surface of the transparent part, so that the black ink remains on the surface of the transparent part, affecting the overall transmittance of the transparent display screen. In the prior art, a retaining wall structure is set between the shading part and the transparent part, which occupies a certain space, so that the pixel density of the display panel is reduced, thereby affecting the transparent display effect of the display screen.

[0041] In order to solve the above technical problems, an embodiment of the present invention provides a display panel, including: a first area and a second area; the transmittance of the first area is less than the transmittance of the second area; the display panel also includes: a base substrate; a metal layer, located in the first area; a shading portion, located in the first area, the shading portion is located on the side of the metal layer away from the base substrate; a transparent portion, located in the second area, at least part of the shading portion is adjacent to the transparent portion; a hydrophobic structure is provided on the surface of the transparent portion on the side away from the base substrate.

[0042] By adopting the above technical scheme, a metal layer is set in a first area with a smaller transmittance on the base substrate to form at least one of a pixel circuit and a signal wiring so as to realize the display function of the display panel, and a transparent portion is set in a second area with a larger transmittance to ensure the transmittance of the display panel, and a shading portion is formed on the side of the metal layer in the first area away from the base substrate to shield the metal wiring in the metal layer, which can reduce reflectivity, improve contrast and reduce color deviation. By providing a hydrophobic structure on the surface of the transparent portion away from the base substrate, the residual amount of shading material on the surface of the transparent portion can be reduced, thereby improving the transmittance of the display screen, and there is no need to provide a retaining wall structure between the shading portion and the transparent portion. The pixel density of the display panel can be improved while ensuring the shading effect, thereby improving the transparent display effect of the display screen.

[0043] The above is the core idea of ​​the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0044] Figure 1 is a schematic diagram of the structure of a display panel provided by an embodiment of the present invention, such as Figure 1 As shown, the display panel includes: a first area A1 and a second area A2; the transmittance of the first area A1 is less than the transmittance of the second area A2; the display panel 10 also includes: a base substrate 10; a metal layer 20, located on one side of the base substrate 10 and located in the first area A1; a shading portion 30, located in the first area A1, and the shading portion 30 is located on the side of the metal layer 20 away from the base substrate 10; a transparent portion 40, located in the second area A2, at least part of the shading portion 30 is adjacent to the transparent portion 40; a hydrophobic structure 41 is provided on the surface of the transparent portion 40 away from the base substrate 10.

[0045] Specifically, the base substrate 10 may be a transparent glass substrate to ensure the light transmittance of the display panel. On the base substrate 10, a metal layer 20 may be provided in the first area A1 with a lower light transmittance. The metal layer 20 may include at least one of copper, nickel, gold, palladium nickel, tin-lead and silver to form at least one of a pixel circuit 21 and a signal wiring 22 to realize the display function of the display panel. A transparent portion 40 is provided in the second area A2 with a higher light transmittance. The transparent portion 40 may be made of a material with a higher light transmittance to ensure the light transmittance of the display panel, so that light can pass through the second area A2, so that the other side of the display panel can be seen through the second area A2 of the display panel 10, thereby enabling the display panel to realize a transparent display.

[0046] In the first area A1, a shading portion 30 may also be formed on the side of the metal layer 20 away from the base substrate 10 to shield the metal wiring in the metal layer 20, reduce reflectivity, improve contrast, and reduce color deviation to improve the display effect of the display panel. In the display panel, the first area A1 and the second area A2 are adjacent to each other, so that the transparent portion 30 is adjacent to the metal layer 20, and since the shading portion 30 is arranged on the side of the metal layer 20 away from the base substrate 10, the transparent portion 40 is adjacent to at least part of the shading portion 30. When preparing the display panel, the shading portion 30 is usually formed on the side of the metal layer 20 away from the base substrate in the first display area A1 after the preparation of the metal layer 20 and the transparent portion 40 is completed. The material of the shading portion 30 is usually fluid, such as black ink or black photolithography material. Therefore, a hydrophobic structure 41 may be provided on the side of the transparent portion 40 away from the base substrate 10. Thus, when the shading portion 30 is formed, when the shading material spreads to the surface of the side of the transparent portion 40 away from the base substrate 10 or splashes to the surface of the side of the transparent portion 40 away from the base substrate 10, the shading material remaining on the surface of the transparent portion 20 can be dispersed to the side of the transparent portion 20 through the hydrophobic structure 41, and the residual amount of shading material on the surface of the transparent portion 20 can be reduced, thereby improving the light transmittance of the display screen, and there is no need to provide a retaining wall structure between the shading portion 30 and the transparent portion 40. On the basis of ensuring the shading effect, the pixel density of the display panel can be improved, which is beneficial to improving the transparent display effect of the display screen.

[0047] It should be noted that, in order to make it easier to identify the position of the hydrophobic structure 41, Figure 1 The hydrophobic structure 41 and the transparent portion 40 are in different colors. It is understood that the hydrophobic structure 41 and the transparent portion 40 may be an integral structure, or the hydrophobic structure 41 may be a structure grown separately on the surface of the transparent portion 41 away from the substrate 10, which is not specifically limited in the embodiment of the present invention.

[0048] The display panel provided by the embodiment of the present invention has a metal layer arranged in a first area with a lower transmittance on a base substrate for forming at least one of a pixel circuit and a signal wiring so as to realize the display function of the display panel, and a transparent portion is arranged in a second area with a higher transmittance to ensure the transmittance of the display panel, and a shading portion is formed on a side of the metal layer in the first area away from the base substrate to shield the metal wiring in the metal layer, thereby reducing reflectivity, improving contrast and reducing color deviation. By providing a hydrophobic structure on the surface of the transparent portion away from the base substrate, the residual amount of shading material on the surface of the transparent portion can be reduced, thereby improving the transmittance of the display screen, and there is no need to provide a retaining wall structure between the shading portion and the transparent portion, so that the pixel density of the display panel can be improved while ensuring the shading effect, thereby improving the transparent display effect of the display screen.

[0049] The hydrophobic structure 41 may be a fine hydrophobic structure, optionally, Figure 2 is a schematic diagram of a transparent portion provided by an embodiment of the present invention, and is combined with reference Figure 1 and Figure 2 The hydrophobic structure 41 includes a protruding structure P; the height H0 of the protruding structure P is in the micrometer level, or the height H0 of the protruding structure is in the nanometer level, which can realize the hydrophobic function while ensuring the flatness of the side of the transparent portion 40 away from the base substrate 10.

[0050] Optional, continue to refer to Figure 1 The display panel includes a light-emitting element 50, which is located in the first area A1, and at least a part of the shading portion 30 is located between the light-emitting element 50 and the transparent portion 40; along the thickness direction Y of the display panel, the surface of the transparent portion 40 away from the substrate substrate 10 is farther away from the substrate substrate 10 than the surface of the shading portion 30 away from the substrate substrate 10, and / or, along the thickness direction Y of the display panel, the surface of the transparent portion 40 away from the substrate substrate 10 is farther away from the substrate substrate 10 than the surface of the light-emitting element 50 away from the substrate substrate 10.

[0051] Specifically, assuming that the distance between the surface of the transparent portion 40 away from the substrate 10 and the substrate 10 is D1, and the distance between the surface of the light shielding portion 30 away from the substrate 10 and the substrate 10 is D2, D1>D2 can be set, so that it can be ensured that the light shielding portion 30 does not spread to the surface of the transparent portion 40, and the high transparency of the transparent portion 40 can be ensured. Among them, the maximum distance between the surface of the transparent portion 40 away from the substrate 10 and the substrate 10 can be set to D1, and the maximum distance between the surface of the light shielding portion 30 away from the substrate 10 and the substrate 10 can be set to D2, and D1>D2 can be set to ensure that the light shielding portion 30 does not spread to the surface of the transparent portion 40.

[0052] Exemplarily, when the hydrophobic structure 41 is prepared on the surface of the transparent part 40 away from the base substrate 10, the light-emitting element 50 can be prepared on the metal layer 20 and after the transparent part 40 is prepared, the release film is used for embossing. Assuming that the distance between the surface of the light-emitting element 50 away from the base substrate 10 and the base substrate 10 is D3, D1>D3 can be set. In this way, when the release film is used for embossing to prepare the hydrophobic structure 41 on the surface of the transparent part 40 away from the base substrate 10, the release film is prevented from being embossed on the surface of the light-emitting element 50, so as to avoid damaging the light-emitting element 50. Before the release film is used for embossing, a planarization layer can be first formed on the side of the light-emitting element 50 away from the base substrate 10, so that the surface of the first area A1 away from the base substrate 10 is flush with the surface of the transparent part 40 away from the base substrate, so as to facilitate the release film to emboss the hydrophobic structure 41 on the surface of the transparent part 40. Among them, D1 can be the maximum distance between the surface of the transparent part 40 away from the substrate substrate 10 and the substrate substrate 10, and D3 can be the maximum distance between the surface of the light-emitting element 50 away from the substrate substrate 10 and the substrate substrate 10, which can ensure that the light-emitting element 50 will not be damaged when the hydrophobic structure 41 is formed by embossing.

[0053] Exemplary, reference Figure 1 , along the thickness direction Y of the display panel, the height of the transparent portion 40 is H1; 10μm≤H1≤15μm, and the height H1 can be set to exceed the distance D3 between the side surface of the light emitting element 50 away from the base substrate 10 and the base substrate 10, so as to reduce the step difference and ensure the high transmittance of the transparent portion 40.

[0054] Optional, Figure 3 is a schematic diagram of the structure of another display panel provided by an embodiment of the present invention, such as Figure 3 As shown, at least part of the shading portion 30 is located between the light emitting element 50 and the transparent portion 40; a surface of the shading portion 30 on a side away from the substrate 10 is closer to the substrate 10 than a surface of the light emitting element 50 on a side away from the substrate 10, or a surface of the shading portion 30 on a side away from the substrate 10 is flush with a surface of the light emitting element 50 on a side away from the substrate 10.

[0055] Specifically, it is assumed that the shading portion 30 located between the light emitting element 50 and the transparent portion 40 is the first shading portion 31, that is, the orthographic projection of the first shading portion 31 on the substrate 10 does not overlap with the orthographic projection of the light emitting element 50 on the substrate 10. Then, by setting the side surface of the first shading portion 31 away from the substrate 10 to be closer to the substrate 10 than the side surface of the light emitting element 50 away from the substrate 10, the shading material used to prepare the shading portion 30 will not spread to the side surface of the light emitting element 50 away from the substrate 10, and the shading material can be prevented from affecting the light output of the light emitting element 50. Exemplarily, the maximum distance D4 between the side surface of the first shading portion 31 away from the substrate 10 and the substrate 10 can be less than the minimum distance D5 between the side surface of the light emitting element 50 away from the substrate 10 and the substrate 10.

[0056] Alternatively, refer to Figure 1 By setting the side surface of the light shielding portion 30 away from the substrate 10 to be flush with the side surface of the light emitting element 50 away from the substrate 10, the light shielding material used to prepare the light shielding portion 30 can also be prevented from spreading to the side surface of the light emitting element 50 away from the substrate 10, thereby preventing the light shielding material from affecting the light emission of the light emitting element 50. Exemplarily, the maximum distance D between the side surface of the first light shielding portion 31 away from the substrate 10 and the substrate 10 can be flush with the minimum distance between the side surface of the light emitting element 50 away from the substrate 10 and the substrate 10. Moreover, when along the thickness direction Y of the display panel, the surface of the transparent portion 40 away from the substrate substrate 10 is farther away from the substrate substrate 10 than the surface of the light emitting element 50 away from the substrate substrate 10, by setting the surface of the side of the shading portion 30 away from the substrate substrate 10 to be closer to the substrate substrate 10 than the surface of the side of the light emitting element 50 away from the substrate substrate 10, or the surface of the side of the shading portion 30 away from the substrate substrate 10 is flush with the surface of the side of the light emitting element 50 away from the substrate substrate 10, it can be further ensured that the shading material used to prepare the shading portion 30 will not spread to the surface of the side of the transparent portion 40 away from the substrate substrate 10, thereby ensuring the high transmittance of the transparent portion 40.

[0057] For example, continue to refer to Figure 1 or Figure 3 , along the thickness direction of the display panel, the thickness of the light shielding portion 30 is H2; 2μm≤H2≤10μm. The height H2 can be set lower than the distance D3 between the side surface of the light emitting element 50 away from the base substrate 10 and the base substrate 10, so as to reduce the reflectivity while avoiding the diffusion to the side surface of the transparent portion 40 away from the base substrate 10 to affect the light transmittance of the transparent portion 40, and avoiding the diffusion of the light shielding material to the side surface of the light emitting element 50 away from the base substrate 10 to affect the light output of the light emitting element 50.

[0058] Optional, Figure 4 is a schematic diagram of the structure of another transparent portion provided by an embodiment of the present invention. Figure 4 As shown, the second area A2 includes a middle area A21 and an edge area A22 at least partially surrounding the middle area A21; the hydrophobic structure 41 includes a first protruding structure P1 and a second protruding structure P2; the first protruding structure P1 is located in the middle area A21, and the second protruding structure P2 is located in the edge area A22; along the thickness direction Y of the display panel, the height H4 of the second protruding structure P2 is greater than the height H3 of the first protruding structure P1.

[0059] Specifically, grooves are formed between adjacent protruding structures P. By setting the height H3 of the second protruding structure P2 located in the edge area A22 to be greater than the height H3 of the first protruding structure P1 located in the middle area A21, the groove located in the edge area A22 is deeper, while the groove located in the middle area A21 is shallower, so that the bottom of the protruding structure P forms an upward slope in the direction from the edge area A22 to the middle area A21. When the shading material is splashed onto the side surface of the transparent part 40 away from the base substrate 10 during the preparation of the shading part 30, the shading material splashed onto the side surface of the transparent part 40 away from the base substrate 10 can be easily evacuated from the groove to the side of the transparent part 40 along the slope, and will not remain in the middle area A21 of the transparent part 40, thereby improving the hydrophobic effect of the hydrophobic structure 41 and further reducing the residual amount of shading material on the surface of the transparent part 40, thereby further improving the light transmittance of the transparent part 40.

[0060] Optional, Figure 5 is a schematic diagram of the structure of another display panel provided by an embodiment of the present invention, such as Figure 5 As shown, the light shielding portion 30 includes a first recess 30 a adjacent to the transparent portion 40 ; the bottom of the second protruding structure P2 is further away from the base substrate 10 than the first recess 30 a.

[0061] Specifically, since the height H4 of the second protruding structure P2 located in the edge area A22 is higher than the height H3 of the first protruding structure P1 located in the middle area A21, the bottom of the groove in the edge area A22 is closer to the substrate 10 than the bottom of the groove in the middle area A21, as shown by the distance D6 in the figure. On this basis, the recess of the shading portion 30 adjacent to the transparent portion 40 (i.e., the first recess 30a) is arranged to be farther away from the substrate 10 and closer to the bottom of the second protruding structure P2, i.e., the distance D7 between the surface of one side of the first recess 30a away from the substrate 10 and the substrate 10 is less than the distance D6 between the bottom of the second protruding structure P2 and the substrate 10, so that the height of the shading portion 30 will not exceed the lowest point of the transparent portion 40, so that the shading portion 30 will not spread to the surface of the transparent portion 40, thereby ensuring the high transmittance of the transparent portion 40.

[0062] Optional, Figure 6 is a schematic diagram of the structure of another display panel provided by an embodiment of the present invention, such as Figure 6 As shown, the orthographic projection of the light shielding portion 30 on the base substrate 10 is the first orthographic projection W1, the orthographic projection of the middle area A21 on the base substrate 10 is the second orthographic projection W2, and the orthographic projection of the edge area A22 on the base substrate 10 is the third orthographic projection W3; the first orthographic projection W1 and the third orthographic projection W3 overlap, and the first orthographic projection W1 and the second orthographic projection W2 do not overlap. In this way, the light shielding portion 30 only covers the edge area A22 of the transparent portion 40 without remaining in the middle area A21, which can ensure the light transmittance of the middle area A21 of the transparent portion, so that the overall light transmittance of the transparent portion 40 is higher.

[0063] Alternatively, refer to Figure 5 , the first orthographic projection W1 does not overlap with the second orthographic projection W2 and the third orthographic projection W3. In this way, there is no light shielding material left on the surface of the transparent portion 40 away from the base substrate 10, so that the light transmittance of the transparent portion 40 is completely unaffected by the light shielding portion 30, thereby ensuring the high transmittance of the transparent portion 40.

[0064] Optional, Figure 7 is a schematic diagram of the structure of another transparent portion provided by an embodiment of the present invention, such as Figure 7 As shown, the transparent portion 40 includes a side wall 42 intersecting with the base substrate 10; a hydrophilic layer 42a is provided on the surface of the side wall 42. In this way, the shading material spreading or dripping on the surface of the transparent portion 40 away from the base substrate 10 can be more easily evacuated to the side wall of the transparent portion 40, and when the thickness of the shading portion 30 is large, the shading portion 30 can be further prevented from spreading to the surface of the transparent portion 40 away from the base substrate 10.

[0065] Optional, Figure 8 is a schematic diagram of the structure of another display panel provided by an embodiment of the present invention, such as Figure 8 As shown, the display panel is characterized in that it also includes: a cover plate 60 located on the side of the metal layer 20 and the transparent portion 40 away from the base substrate 10; and a planarization layer 70 located at least between the metal layer 20 and the cover plate 10.

[0066] It can be understood that the metal layer 20 includes a light-emitting element 50 on the side away from the base substrate 10, that is, the cover plate 60 is also located on the side of the light-emitting element 50 and the transparent part 40 away from the base substrate 10, so as to facilitate the packaging of the display panel. A planarization layer 70 can also be provided on the surface of the side of the light-emitting element 50 and the transparent part 40 away from the base substrate 10, so that it is convenient to provide a cover plate on the side of the planarization layer 70 away from the base substrate 10. In another feasible embodiment, a planarization layer 70 is also provided between the cover plate and the light-emitting element 50, that is, a planarization layer 70 is provided only on the surface of the side of the light-emitting element 50 away from the base substrate 10, so that the surface of the side of the first area A1 away from the base substrate 10 is flush with the surface of the side of the transparent part 40 away from the base substrate 10, which can reduce the thickness of the display panel and is conducive to the thinness of the display panel.

[0067] Based on the same inventive concept, an embodiment of the present invention further provides a method for preparing a display panel. The method for preparing a display panel is used to prepare the display panel provided by any embodiment of the present invention. Fig. 9 is a flow chart of a method for preparing a display panel provided by an embodiment of the present invention, Fig.10 is a diagram of a manufacturing process of a display panel provided by an embodiment of the present invention, combined with reference Fig. 9 and Fig.10 The display panel includes a first area A1 and a second area A2, and the light transmittance of the first area A1 is less than the light transmittance of the second area A2. The method for preparing the display panel includes:

[0068] S110, providing a substrate.

[0069] Specifically, the base substrate 10 may be a transparent glass substrate to ensure the light transmittance of the display panel.

[0070] S120 , forming a metal layer on one side of the base substrate in the first region.

[0071] Specifically, the metal layer 20 may include at least one of copper, nickel, gold, palladium nickel, tin-lead and silver, to form at least one of the pixel circuit 21 and the signal wiring 22, so as to realize the display function of the display panel. The metal layer 20 may be formed by an etching process. After the metal layer 20 is formed, a light-emitting element 50 may be arranged on a side of the metal layer 20 away from the base substrate 10, so that the pixel circuit 21 of the metal layer 20 is electrically connected to the light-emitting element 50, so that the light-emitting element 50 can be driven to emit light by the pixel circuit 21.

[0072] S130 , in the second region, forming a transparent portion on a side of the base substrate where the metal layer is provided.

[0073] Among them, the transparent part 40 can be made of a material with high transmittance to ensure the transmittance of the display panel, so that light can pass through the second area A2, so that the other side of the display panel can be seen through the second area A2 of the display panel 10, thereby enabling the display panel to achieve transparent display.

[0074] S140, forming a hydrophobic structure on a surface of the transparent portion away from the base substrate.

[0075] Specifically, the hydrophobic structure 41 may be a fine hydrophobic structure. Exemplarily, the hydrophobic structure 41 includes a protruding structure P; the height H0 of the protruding structure P is micrometer-level, or the height H0 of the protruding structure is nanometer-level, which can achieve the hydrophobic function while ensuring the flatness of the side of the transparent portion 40 away from the base substrate 10.

[0076] For example, Fig.11 is a diagram of a preparation process of a hydrophobic structure provided by an embodiment of the present invention, such as Fig.11 As shown, when a hydrophobic structure is formed on the surface of the transparent portion away from the base substrate, a release film L0 can be used to emboss the side of the display function layer away from the base substrate 10; the side of the release film L0 facing the base substrate 10 includes a concave-convex structure M.

[0077] S150, forming a light shielding portion on a side of the metal layer away from the base substrate.

[0078] Wherein, at least part of the light-shielding portion is adjacent to the transparent portion.

[0079] Specifically, a shading portion 30 is formed on the side of the metal layer 20 of the first display area A1 away from the base substrate, and the material of the shading portion 30 is usually fluid, such as black ink or black photolithography material. Therefore, a hydrophobic structure 41 may be provided on the side of the transparent portion 40 away from the base substrate 10. In this way, when the shading portion 30 is formed, when the shading material spreads to the side surface of the transparent portion 40 away from the base substrate 10 or splashes to the side surface of the transparent portion 40 away from the base substrate 10, the shading material remaining on the surface of the transparent portion 20 can be evacuated to the side of the transparent portion 20 through the hydrophobic structure 41, which can reduce the amount of shading material remaining on the surface of the transparent portion 20, thereby improving the light transmittance of the display screen, and there is no need to set up a retaining wall structure between the shading portion 30 and the transparent portion 40. On the basis of ensuring the shading effect, the pixel density of the display panel can be improved, which is conducive to improving the transparent display effect of the display screen.

[0080] The method for preparing a display panel provided by an embodiment of the present invention first forms a metal layer and a transparent portion on one side of a base substrate before forming a shading portion, and provides a hydrophobic structure on the surface of the transparent portion away from the base substrate. In this way, the amount of shading material remaining on the surface of the transparent portion can be reduced when the shading portion is formed, thereby improving the light transmittance of the display screen, and there is no need to provide a retaining wall structure between the shading portion and the transparent portion. The pixel density of the display panel can be improved while ensuring the shading effect, thereby improving the transparent display effect of the display screen.

[0081] Optional, reference Fig.11 The release film L0 includes a third area A3; the concavo-convex structure M is located in the third area M; when the release film L0 is used to emboss the side of the transparent part 40 away from the base substrate 10, the second area A2 and the third area A3 at least partially overlap. In this way, the concavo-convex structure M can be embossed to the side of the transparent part 40 away from the base substrate 10 to form a hydrophobic structure 41.

[0082] Optional, continue to refer to Fig.10 The first area A1 and the third area A3 do not overlap, so as to prevent the concavo-convex structure M of the release film L0 from damaging the light emitting element 50 .

[0083] Optional, Fig.12 is a diagram of the preparation process of another hydrophobic structure provided in an embodiment of the present invention, such as Fig.12 As shown, when the side surface of the transparent portion 40 away from the base substrate 10 is farther than the side surface of the light-emitting element 50 away from the base substrate 10, a concave-convex structure can be provided on the side of the release film L0 facing the display panel, and the concave-convex structure M of the release film L0 can also be prevented from damaging the light-emitting element 50.

[0084] Optional, Fig.13 is a flow chart of another method for preparing a display panel provided by an embodiment of the present invention, Fig.14 is a diagram of another process of manufacturing a display panel provided by an embodiment of the present invention, wherein the method of manufacturing the display panel includes:

[0085] S210, providing a substrate.

[0086] S220 , forming a metal layer on one side of the base substrate in the first region.

[0087] S230 , in the second region, forming a transparent portion on a side of the base substrate where the metal layer is provided.

[0088] S240, forming a hydrophobic structure on a surface of the transparent portion away from the base substrate.

[0089] S250, forming a light shielding portion on a side of the metal layer away from the base substrate.

[0090] S260, forming a planarization layer on a side of the light shielding portion and the transparent portion away from the base substrate.

[0091] S270, forming a cover plate on a side of the planarization layer away from the base substrate.

[0092] Among them, a planarization layer 70 is provided on the surface of the side of the light emitting element 50 and the transparent part 40 away from the base substrate 10, so that it is convenient to set a cover plate on the side of the planarization layer 70 away from the base substrate 10. In another feasible embodiment, a planarization layer 70 is also provided between the cover plate and the light emitting element 50, that is, the planarization layer 70 is only provided on the surface of the side of the light emitting element 50 away from the base substrate 10, so that the surface of the side of the first area A1 away from the base substrate 10 is flush with the surface of the side of the transparent part 40 away from the base substrate 10, which can reduce the thickness of the display panel and is conducive to the thinness of the display panel. Then, a cover plate 60 is formed on the side of the planarization layer 70 away from the base substrate 10 to facilitate the packaging of the display panel.

[0093] Based on the same inventive concept, an embodiment of the present invention further provides a display device, which includes a display panel provided by any embodiment of the present invention. Therefore, the display device provided by the embodiment of the present invention includes the technical features of the display panel provided by any embodiment of the present invention, and can achieve the beneficial effects of the display panel provided by any embodiment of the present invention. The similarities can be referred to the above description of the display panel provided by the embodiment of the present invention, and will not be repeated here.

[0094] Fig.15 It is a structural schematic diagram of a display device provided in an embodiment of the present invention. The display device 00 can be any electronic product with a display function, including but not limited to the following categories: vehicle-mounted displays, VR displays, televisions, laptops, desktop displays, tablet computers, digital cameras, mobile phones, smart bracelets, smart glasses, vehicle-mounted displays, medical equipment, industrial control equipment, touch interactive terminals, etc.

[0095] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0096] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A display panel, characterized in that: include: First and second regions; The light transmittance of the first region is less than the light transmittance of the second region; The display panel further includes: substrate substrate; A metal layer, located on one side of the substrate and located in the first area; A light shielding portion, located in the first region, the light shielding portion is located on a side of the metal layer away from the base substrate; a transparent portion, located in the second area, and at least a portion of the light shielding portion is adjacent to the transparent portion; A hydrophobic structure is arranged on a surface of the transparent portion which is away from the base substrate.

2. The display panel according to claim 1, characterized in that: The hydrophobic structure includes a protrusion structure; The height of the protruding structure is in the micrometer order, or the height of the protruding structure is in the nanometer order.

3. The display panel according to claim 1, characterized in that: The display panel includes a light emitting element, the light emitting element is located in the first area, and at least part of the light shielding portion is located between the light emitting element and the transparent portion; Along the thickness direction of the display panel, the surface of the transparent portion away from the substrate side is farther away from the substrate than the surface of the shading portion away from the substrate side, and / or, along the thickness direction of the display panel, the surface of the transparent portion away from the substrate side is farther away from the substrate than the surface of the light-emitting element away from the substrate side.

4. The display panel according to claim 1, characterized in that: Along the thickness direction of the display panel, the height of the transparent portion is H1; 10μm≤H1≤15μm.

5. The display panel according to claim 1, characterized in that: The display panel includes a light emitting element, the light emitting element is located in the first area, and at least part of the light shielding portion is located between the light emitting element and the transparent portion; The side surface of the shading portion away from the substrate is closer to the substrate than the side surface of the light emitting element away from the substrate, or the side surface of the shading portion away from the substrate is flush with the side surface of the light emitting element away from the substrate.

6. The display panel according to claim 1, characterized in that: Along the thickness direction of the display panel, the thickness of the light shielding portion is H2; 2μm≤H2≤10μm.

7. The display panel according to claim 1, characterized in that: The second region includes a middle region and an edge region at least partially surrounding the middle region; The hydrophobic structure includes a first protrusion structure and a second protrusion structure; The first protruding structure is located in the middle area, and the second protruding structure is located in the edge area; Along the thickness direction of the display panel, the height of the second protruding structure is greater than the height of the first protruding structure.

8. The display panel according to claim 7, characterized in that: The orthographic projection of the light shielding portion on the base substrate is a first orthographic projection, the orthographic projection of the middle area on the base substrate is a second orthographic projection, and the orthographic projection of the edge area on the base substrate is a third orthographic projection; The first orthographic projection overlaps with the third orthographic projection, and the first orthographic projection does not overlap with the second orthographic projection; Alternatively, the first orthographic projection does not overlap with the second orthographic projection and the third orthographic projection.

9. The display panel according to claim 7, characterized in that: The light shielding portion includes a first recess adjacent to the transparent portion; The bottom of the second protrusion structure is farther away from the base substrate than the first recess.

10. The display panel according to claim 1, characterized in that: The transparent portion includes a side wall intersecting with the base substrate; A hydrophilic layer is provided on the surface of the side wall.

11. The display panel according to claim 1, characterized in that: Also includes: A cover plate, located on a side of the metal layer and the transparent portion away from the base substrate; planarization layer; At least located between the metal layer and the cover plate.

12. A method for preparing a display panel, the display panel comprising a first area and a second area, the light transmittance of the first area being less than the light transmittance of the second area, characterized in that: The method for preparing the display panel includes: providing a substrate base plate; In the first region, a metal layer is formed on one side of the substrate; In the second region, a transparent portion is formed on a side of the base substrate where the metal layer is provided; forming a hydrophobic structure on a surface of the transparent portion away from the base substrate; A light shielding portion is formed on a side of the metal layer away from the base substrate; at least a portion of the light shielding portion is adjacent to the transparent portion.

13. The method for preparing a display panel according to claim 12, characterized in that: A hydrophobic structure is formed on a surface of the transparent portion away from the base substrate, comprising: Using a release film to emboss the side of the transparent portion away from the base substrate; The side of the release film facing the base substrate includes a concave-convex structure.

14. The method for preparing a display panel according to claim 13, characterized in that: The release film includes a third region; the concave-convex structure is located in the third region; When the release film is used to emboss the side of the transparent portion away from the base substrate, the second area at least partially overlaps with the third area.

15. The method for preparing a display panel according to claim 14, characterized in that: The first area does not overlap with the third area.

16. The method for manufacturing a display panel according to claim 12, characterized in that: After forming a light shielding portion on a side of the metal layer away from the base substrate, the method further comprises: forming a planarization layer on a side of the light shielding portion and the transparent portion away from the base substrate; A cover plate is formed on a side of the planarization layer away from the base substrate.

17. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 11.

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