Display panel, manufacturing method thereof and display device

Abstract

The invention relates to a display panel, a manufacturing method thereof and a display device, and the display panel comprises a light-emitting device layer which is located at one side of a substrate and comprises a plurality of light-emitting units which are arranged at intervals; the spacing layer comprises a spacing part, and the spacing part is located between every two adjacent light-emitting units; the auxiliary function layer is located on one side of the spacer layer away from the substrate; the light shielding layer is located on the side, away from the substrate, of the packaging layer, the light shielding layer comprises a light shielding structure and a plurality of light shielding openings surrounded by the light shielding structure, the orthographic projection of the light shielding structure on the light emitting device layer is at least partially overlapped with the interval parts, and the orthographic projection of the light shielding openings on the light emitting device layer is at least partially overlapped with the light emitting units; the auxiliary function layer is in contact with the shading layer; the material of the auxiliary functional layer comprises at least one of a lipophilic material and an oleophobic material, and the thickness of the shading structure in the direction perpendicular to the plane where the substrate is located is larger than or equal to 10 micrometers. According to the invention, the display panel with a narrow viewing angle is realized.

Description

Technical Field

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

[0002] With the continuous development of display technology, organic light-emitting diode (OLED) display devices have been widely used in many fields such as flat panel displays, flexible displays, automotive displays and solid-state lighting due to their advantages such as wide color gamut, high contrast, energy saving and foldability.

[0003] However, with the development of display technology and the expansion of application scenarios, how to achieve a narrow viewing angle design with simplified structure and manufacturing process is an urgent problem to be solved. Summary of the invention

[0004] Based on this, it is necessary to provide a display panel and a manufacturing method thereof, and a display device, aiming to solve the problem of how to achieve a narrow viewing angle design with a simplified structure and manufacturing process, which is an urgent problem to be solved.

[0005] In a first aspect, an embodiment of the present application provides a display panel, including:

[0006] substrate;

[0007] A light-emitting device layer, located on one side of the substrate, the light-emitting device layer comprising a plurality of light-emitting units arranged at intervals;

[0008] A spacing layer, comprising a spacing portion, which is located between two adjacent light-emitting units on a plane parallel to the substrate;

[0009] An encapsulation layer, located on a side of the light-emitting device layer away from the substrate;

[0010] an auxiliary functional layer, located on a side of the encapsulation layer away from the substrate;

[0011] a light shielding layer, located on a side of the encapsulation layer away from the substrate, the light shielding layer comprising a light shielding structure and a plurality of light shielding openings surrounded by the light shielding structure, the orthographic projection of the light shielding structure on the light-emitting device layer at least partially overlaps with the spacer, the orthographic projection of the light shielding opening on the light-emitting device layer at least partially overlaps with the light-emitting unit, and the auxiliary function layer is arranged in contact with the light shielding layer;

[0012] The light-shielding layer comprises an oleophilic material, the material of the auxiliary functional layer comprises at least one of an oleophilic material and an oleophobic material, and the thickness of the light-shielding structure in a direction perpendicular to the plane where the substrate is located is greater than or equal to 10 microns.

[0013] In some embodiments, the auxiliary functional layer includes a plurality of first structures, the first structures include the oleophobic material, and the light transmittance of the first structures is greater than 50%, and the first structures are at least partially located in the corresponding light-shielding openings.

[0014] In some embodiments, the oleophobic material includes an organic substance containing fluorine element.

[0015] In some embodiments, the auxiliary function layer includes a second structure and a plurality of first openings surrounded by the second structure, the second structure includes the oleophilic material, an orthographic projection of the second structure on the plane where the light-emitting device layer is located at least partially overlaps with the spacer, and an orthographic projection of the first opening on the plane where the light-emitting device layer is located at least partially overlaps with the light-emitting unit;

[0016] The second structure is located between the light shielding structure and the packaging layer.

[0017] In some embodiments, the orthographic projection of the light-shielding structure on the substrate is located within the range of the orthographic projection of the second structure on the substrate.

[0018] In some embodiments, the light transmittance of the second structure is less than 50%.

[0019] In some embodiments, the auxiliary functional layer includes a first structure and a second structure;

[0020] The first structure includes the oleophobic material, and the light transmittance of the first structure is greater than 50%, and the first structure is at least partially located in the corresponding light shielding opening;

[0021] The second structure includes the oleophilic material, the orthographic projection of the second structure on the plane where the light-emitting device layer is located at least partially overlaps with the spacer, and the second structure is located between the light-shielding structure and the encapsulation layer.

[0022] In some embodiments, in a direction perpendicular to the plane where the substrate is located, the thickness of the first structure is greater than the thickness of the second structure.

[0023] In the second aspect, based on the same application concept, the present application also provides a method for manufacturing a display panel, including:

[0024] providing a substrate;

[0025] A light-emitting device layer and a spacer layer are formed on one side of the substrate, wherein the light-emitting device layer includes a plurality of light-emitting units arranged at intervals, and the spacer layer includes a spacer portion, and the spacer portion is located between two adjacent light-emitting units on a plane parallel to the substrate;

[0026] A packaging layer is formed on a side of the light-emitting device layer away from the substrate;

[0027] An auxiliary function layer is formed on a side of the packaging layer away from the substrate, and the material of the auxiliary function layer includes at least one of an oil-loving material and an oil-repellent material;

[0028] A light-shielding layer is formed on a side of the packaging layer away from the substrate. The light-shielding layer includes a light-shielding structure and a plurality of light-shielding openings surrounded by the light-shielding structure. A positive projection of the light-shielding structure on the light-emitting device layer at least partially overlaps with the spacer portion, and a positive projection of the light-shielding openings on the light-emitting device layer at least partially overlaps with the light-emitting unit. The auxiliary function layer is in contact with the light-shielding layer. The light-shielding layer includes an oil-loving material, and a thickness of the light-shielding structure in a direction perpendicular to a plane where the substrate is located is greater than or equal to 10 micrometers.

[0029] In a third aspect, based on the same inventive concept, an embodiment of the present application further provides a display device, and the display device includes any one of the display panels provided in the first aspect.

[0030] In the embodiment of the present application, an auxiliary functional layer and a light shielding layer are arranged on the side of the encapsulation layer away from the substrate, the light shielding layer includes a light shielding structure and a plurality of light shielding openings surrounded by the light shielding structure, the light shielding opening can transmit display light, the light shielding structure can block the display light emitted from a large viewing angle to achieve a narrow viewing angle, the light shielding layer includes an oleophilic material, the material of the auxiliary functional layer includes at least one of an oleophilic material and an oleophobic material, the auxiliary functional layer can make the thickness of the light shielding layer thicker, for example, the thickness of the light shielding structure in the direction perpendicular to the plane where the substrate is located is greater than or equal to 10 microns, and the auxiliary functional layer can make it possible to manufacture a thicker light shielding layer through a printing process, thereby simplifying the manufacturing process and the display panel structure. 1) In the first aspect, the auxiliary functional layer includes a plurality of first structures, when the first structure includes an oleophobic material, and the transmittance of the first structure is greater than 50%, the first structure is at least partially located in the corresponding light shielding opening, that is, when a thicker light shielding layer is formed through a printing process, the pre-formed first structure of the oleophobic material can repel the diffusion of the material of the light shielding layer, thereby forming a thicker light shielding structure and forming a steeper side wall of the light shielding opening. 2) In the second aspect, the auxiliary functional layer includes a second structure and a plurality of first openings surrounded by the second structure. When the second structure includes an oleophilic material, the orthographic projection of the second structure on the plane where the light-emitting device layer is located at least partially overlaps with the spacer portion. The second structure is located between the shading structure and the encapsulation layer. That is, when a thick shading layer is formed by a printing process, a second structure of the oleophilic material is formed in advance. The material of the shading layer is printed on the surface of the second structure away from the substrate. The second structure can absorb the material of the shading layer to avoid excessive diffusion of the material of the shading layer, thereby forming a thicker shading structure and forming a steep side wall of the shading opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are 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 creative work.

[0032] Figure 1 A schematic diagram of a first cross-sectional structure of a display panel provided in an embodiment of the present application.

[0033] Figure 2 A schematic diagram of a second cross-sectional structure of a display panel provided in an embodiment of the present application.

[0034] Figure 3 A schematic diagram of a third cross-sectional structure of a display panel provided in an embodiment of the present application.

[0035] Figure 4A fourth cross-sectional structural schematic diagram of a display panel provided in an embodiment of the present application.

[0036] Figure 5 A schematic diagram of a method for manufacturing a display panel provided in an embodiment of the present application.

[0037] Figure 6 A schematic diagram of a first intermediate process of a method for manufacturing a display panel provided in an embodiment of the present application.

[0038] Figure 7 A schematic diagram of a second intermediate process of a method for manufacturing a display panel provided in an embodiment of the present application.

[0039] Figure 8 A schematic diagram of a display device provided in an embodiment of the present application.

[0040] Reference numerals:

[0041] Display device 200; display panel 100; substrate 11; light-emitting device layer 20; spacer layer 14J; encapsulation layer 30; auxiliary function layer 50; shading layer 60; light-emitting unit 20f; spacer 14J1; shading structure 61; shading opening 62; array composite layer 12; pixel driving circuit 121; first electrode layer 13; first electrode 131; pixel definition layer 14; pixel definition structure 141; light-emitting function layer 21; second electrode 22; first structure 51; first thickness d1; second structure 52; first opening 521; first angle α; touch layer 80; first touch metal layer 81; first touch insulating layer 82; second touch metal layer 83; second touch insulating layer 84; flat layer 70. DETAILED DESCRIPTION

[0042] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0044] When describing positional relationships, unless otherwise specified, when an element such as a layer, film, or substrate is referred to as being "on" another element, it can be directly on the other element or there may be intervening elements. Further, when a layer is referred to as being "under" another layer, it can be directly under or there may be one or more intervening elements. It is also understood that when a layer is referred to as being "between" two layers, it can be the only layer between the two layers or there may be one or more intervening elements.

[0045] In the case of using “including”, “having”, and “comprising” described herein, another component may be added unless a clear limiting term such as “only”, “consisting of”, etc. is used. Unless mentioned otherwise, a term in the singular form may include a plural form and should not be understood as being one in number.

[0046] It should be understood that although the terms "first", "second", etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of the present application.

[0047] It should also be understood that when interpreting an element, even if not explicitly described, the element is interpreted as including a range of error, which should be within the acceptable deviation range of the specific value determined by those skilled in the art. For example, "approximately", "approximately" or "substantially" can mean within one or more standard deviations, which are not limited here.

[0048] Furthermore, in the specification, the phrase “planar distribution schematic diagram” refers to a drawing when a target portion is viewed from above, and the phrase “cross-sectional schematic diagram” refers to a drawing when a section taken by vertically cutting the target portion is viewed from the side.

[0049] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the elements in the drawings are drawn only as examples and not necessarily according to the true scale.

[0050] It is obvious to those skilled in the art that various modifications and changes can be made in this application without departing from the spirit or scope of this application. Therefore, this application is intended to cover modifications and changes of this application that fall within the scope of the corresponding claims (technical solutions claimed for protection) and their equivalents. It should be noted that the implementation methods provided in the embodiments of this application can be combined with each other without contradiction.

[0051] As described in the background technology section, with the development of display technology and the expansion of application scenarios, how to achieve a narrow viewing angle design with a simplified structure and manufacturing process is an urgent problem to be solved. For example, display panels used in vehicles require display panels with a narrow viewing angle to achieve an anti-peeping function. However, when achieving a good anti-peeping function, the structure of the display panel cannot be complicated, nor can the manufacturing process of the display panel be complicated. It is necessary to avoid a significant increase in the cost of the display panel.

[0052] Based on the above technical problems, the inventors have found that an auxiliary functional layer and a light-shielding layer are arranged on the side of the encapsulation layer away from the substrate, the light-shielding layer includes a light-shielding structure and a plurality of light-shielding openings surrounded by the light-shielding structure, the light-shielding openings can transmit the display light, the light-shielding structure can block the display light emitted from a wide viewing angle to achieve a narrow viewing angle, the light-shielding layer includes an oleophilic material, the material of the auxiliary functional layer includes at least one of an oleophilic material and an oleophobic material, the auxiliary functional layer can make the thickness of the light-shielding layer thicker, for example, the thickness of the light-shielding structure in a direction perpendicular to the plane of the substrate is greater than or equal to 10 microns, the auxiliary functional layer can make a thicker light-shielding layer by a printing process, thereby simplifying the manufacturing process and the display panel structure. 1) In the first aspect, the auxiliary functional layer includes a plurality of first structures, when the first structure includes an oleophobic material, and the transmittance of the first structure is greater than 50%, the first structure is at least partially located in the corresponding light-shielding opening, that is, when a thicker light-shielding layer is formed by a printing process, the pre-formed first structure of the oleophobic material can repel the diffusion of the material of the light-shielding layer, thereby forming a thicker light-shielding structure and forming a steeper side wall of the light-shielding opening. 2) In the second aspect, the auxiliary functional layer includes a second structure and a plurality of first openings surrounded by the second structure, when the second structure includes an oleophilic material, the orthographic projection of the second structure on the plane where the light-emitting device layer is located overlaps with the spacer at least partially, and the second structure is located between the light-shielding structure and the encapsulation layer, that is, when a thicker light-shielding layer is formed by a printing process, a second structure of the oleophilic material is pre-formed, and the material of the light-shielding layer is printed on the surface of the second structure away from the substrate, and the second structure can absorb the material of the light-shielding layer to avoid excessive diffusion of the material of the light-shielding layer, thereby forming a thicker light-shielding structure and forming a steeper side wall of the light-shielding opening.

[0053] The above is the core idea of ​​this application. The technical solutions in the embodiments of this application will be described clearly and completely below in conjunction with the drawings in the embodiments of this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0054] See also Figures 1 to 4 . Figure 1 A schematic diagram of a first cross-sectional structure of a display panel provided in an embodiment of the present application. Figure 2 A schematic diagram of a second cross-sectional structure of a display panel provided in an embodiment of the present application. Figure 3 A schematic diagram of a third cross-sectional structure of a display panel provided in an embodiment of the present application. Figure 4 A fourth cross-sectional structural schematic diagram of a display panel provided in an embodiment of the present application.

[0055] The present application provides a display panel 100, which includes a substrate 11, a light-emitting device layer 20, a spacer layer 14J, an encapsulation layer 30, an auxiliary function layer 50 and a light shielding layer 60. The light-emitting device layer 20 is located on one side of the substrate 11, and the light-emitting device layer 20 includes a plurality of light-emitting units 20f arranged at intervals. The spacer layer 14J includes a spacer 14J1, and the spacer 14J1 is located between two adjacent light-emitting units 20f on a plane parallel to the substrate 11. The encapsulation layer 30 is located on a side of the light-emitting device layer 20 away from the substrate 11. The auxiliary function layer 50 is located on a side of the encapsulation layer 30 away from the substrate 11. The light shielding layer 60 is located on the side of the encapsulation layer 30 away from the substrate 11, and the light shielding layer 60 includes a light shielding structure 61 and a plurality of light shielding openings 62 surrounded by the light shielding structure 61. The orthographic projection of the light shielding structure 61 on the light emitting device layer 20 at least partially overlaps with the spacer 14J1, and the orthographic projection of the light shielding opening 62 on the light emitting device layer 20 at least partially overlaps with the light emitting unit 20f. The auxiliary function layer 50 is arranged in contact with the light shielding layer 60. The light shielding layer 60 includes an oleophilic material, and the material of the auxiliary function layer 50 includes at least one of an oleophilic material and an oleophobic material. The thickness of the light shielding structure 61 in a direction perpendicular to the plane where the substrate 11 is located is greater than or equal to 10 microns.

[0056] For example, in some embodiments, the display panel 100 may include an array composite layer 12 located on one side of the substrate 11, and the array composite layer 12 may include a plurality of pixel driving circuits 121; the first electrode layer 13 is located on a side of the array composite layer 12 away from the substrate 11, and the first electrode layer 13 includes a plurality of first electrodes 131, and the first electrodes 131 are electrically connected to the pixel driving circuit 121; the pixel definition layer 14 may be disposed on a side of the first electrode layer 13 away from the substrate 11, and the pixel definition layer 14 includes a pixel definition structure 141 and a plurality of pixel openings 142 surrounded by the pixel definition structure 141; the light emitting device or light emitting unit 20f includes a first electrode 131, a light emitting functional layer 21 and a second electrode 22, and the light emitting device ... The optical functional layer 21 is at least partially located in the pixel opening 142, and the first electrode 131, the light-emitting functional layer 21 and the second electrode 22 are stacked in a direction perpendicular to the plane where the substrate 11 is located. One of the first electrode 131 and the second electrode 22 can be an anode, and the other of the first electrode 131 and the second electrode 22 can be a cathode. In the embodiment of the present application, the first electrode 131 is used as an anode and the second electrode 22 is used as a cathode for illustration; the encapsulation layer 30 is located on the side of the light-emitting device layer 20 away from the substrate 11, and the encapsulation layer 30 can be a thin film encapsulation layer. The encapsulation layer 30 may include at least one layer of inorganic material film layer and at least one layer of organic material film layer stacked and alternately arranged in a direction perpendicular to the plane where the substrate 11 is located.

[0057] For example, for example, the light-emitting device layer 20 includes a plurality of light-emitting units 20f arranged at intervals. When the display panel 100 is an organic light-emitting diode (OLED) display panel, the light-emitting unit 20f is the light-emitting device of the OLED panel, but the display panel 100 may also be other types of display panels.

[0058] For example, the spacer layer 14J includes a spacer portion 14J1, which is located between two adjacent light-emitting units 20f on a plane parallel to the substrate 11. When the display panel is an organic light-emitting diode (OLED) display panel, the spacer portion 14J1 is a pixel definition structure 141.

[0059] For example, in a top view structure (not shown), the light shielding layer 60 includes a light shielding structure 61 and a plurality of light shielding openings 62 surrounded by the light shielding structure 61 . The light shielding layer 60 or the light shielding structure 61 may be in a grid shape.

[0060] For example, in some embodiments, the orthographic projection of the light shielding structure 61 on the light emitting device layer 20 is located within the range of the corresponding spacer 14J1 .

[0061] For example, Figure 1As shown, the thickness of the shading structure 61 in a direction perpendicular to the plane of the substrate 11 is a first thickness d1, and the first thickness d1 is greater than or equal to 10 microns. The first thickness d1 can be set according to the viewing angle setting of the display panel 100, and the first thickness d1 can be any value of 10 microns, 11 microns, 12 microns, 13 microns, 14 microns, 15 microns, 16 microns, 17 microns, and 18 microns.

[0062] For example, the auxiliary functional layer 50 is located on the side of the encapsulation layer 30 away from the substrate 11. The light shielding layer 60 is located on the side of the encapsulation layer 30 away from the substrate 11, and the light shielding layer 60 includes a light shielding structure 61 and a plurality of light shielding openings 62 surrounded by the light shielding structure 61. The orthographic projection of the light shielding structure 61 on the light emitting device layer 20 at least partially overlaps with the spacer 14J1, and the orthographic projection of the light shielding opening 62 on the light emitting device layer 20 at least partially overlaps with the light emitting unit 20f, and the auxiliary functional layer 50 is arranged in contact with the light shielding layer 60. Among them, the light shielding layer 60 includes an oleophilic material, and the material of the auxiliary functional layer 50 includes at least one of an oleophilic material and an oleophobic material, and the thickness of the light shielding structure 61 in a direction perpendicular to the plane where the substrate 11 is located is greater than or equal to 10 microns.

[0063] For example, a shading layer 60 is provided on a side of the encapsulation layer 30 away from the substrate 11, and the shading layer 60 includes a shading structure 61 and a plurality of shading openings 62 surrounded by the shading structure 61, the shading openings 62 can transmit display light, and the shading structure 61 can block display light emitted from a large viewing angle to achieve a narrow viewing angle. For example, the shading structure 61 can block viewing angle light or oblique viewing angle light greater than a preset viewing angle. For example, the shading structure 61 can block viewing angle light greater than any one of 45 degrees, 47 degrees, 50 degrees, 52 degrees, 55 degrees, 57 degrees, 60 degrees, 52 degrees, and 65 degrees, thereby realizing a display panel designed with a narrow viewing angle or a preset viewing angle.

[0064] For example, however, the inventors have found that when the light-shielding layer is formed by a direct etching process, due to reasons such as exposure depth, the thickness of the light-shielding layer in a direction perpendicular to the plane of the substrate 11 is too small, for example, less than 3 microns, so that the light-shielding structure 61 cannot block light of a preset viewing angle or light of an oblique viewing angle; however, the inventors have found that when the light-shielding layer is formed by a direct printing process, due to reasons such as the fluidity of the material of the light-shielding layer, the thickness of the light-shielding layer in a direction perpendicular to the plane of the substrate 11 is too small, for example, less than 3 microns, so that the light-shielding structure 61 cannot block light of a preset viewing angle or light of an oblique viewing angle.

[0065] For example, the inventors have found that the light-shielding layer 60 includes an oleophilic material, for example, the material of the light-shielding layer 60 includes black photoresist, and an auxiliary functional layer 50 can be set. The material of the auxiliary functional layer 50 includes at least one of an oleophilic material and an oleophobic material. The auxiliary functional layer 50 is arranged in contact with the light-shielding layer 60. The auxiliary functional layer 50 can make the light-shielding layer 60 thicker. For example, the thickness of the light-shielding structure 61 in a direction perpendicular to the plane where the substrate 11 is located is greater than or equal to 10 microns. The auxiliary functional layer 50 can make it possible to manufacture a thicker light-shielding layer 60 through a printing process (for example, an inkjet printing process), thereby simplifying the manufacturing process and the structure of the display panel 100.

[0066] In an embodiment of the present application, an auxiliary functional layer 50 and a light-shielding layer 60 are arranged on a side of the encapsulation layer 30 away from the substrate 11. The light-shielding layer 60 includes a light-shielding structure 61 and a plurality of light-shielding openings 62 surrounded by the light-shielding structure 61. The light-shielding opening 62 can transmit display light, and the light-shielding structure 61 can block display light emitted from a large viewing angle to achieve a narrow viewing angle. The light-shielding layer 60 includes an oleophilic material, and the material of the auxiliary functional layer 50 includes at least one of an oleophilic material and an oleophobic material. The auxiliary functional layer 50 can make the thickness of the light-shielding layer 60 thicker. For example, the thickness of the light-shielding structure 61 in a direction perpendicular to the plane of the substrate 11 is greater than or equal to 10 microns. The auxiliary functional layer 50 can make it possible to manufacture a light-shielding layer 60 with a larger thickness through a printing process, thereby simplifying the manufacturing process and the structure of the display panel 100. 1) In the first aspect, the auxiliary functional layer 50 includes a plurality of first structures 51. When the first structure 51 includes an oleophobic material and the transmittance of the first structure 51 is greater than 50%, the first structure 51 is at least partially located in the corresponding light-shielding opening 62. That is, when a thicker light-shielding layer 60 is formed by a printing process, the pre-formed first structure 51 of the oleophobic material can repel the diffusion of the material of the light-shielding layer 60, thereby forming a thicker light-shielding structure 61 and forming a steeper side wall of the light-shielding opening 62. 2) In the second aspect, the auxiliary functional layer 50 includes a second structure 52 and a plurality of first openings 521 surrounded by the second structure 52. When the second structure 52 includes an oleophilic material, the orthographic projection of the second structure 52 on the plane where the light-emitting device layer 20 is located at least partially overlaps with the spacer 14J1. The second structure 52 is located between the light-shielding structure 61 and the encapsulation layer 30. That is, when a thicker light-shielding layer 60 is formed by a printing process, a second structure 52 of an oleophilic material is pre-formed. The material of the light-shielding layer 60 is printed on the surface of the second structure 52 away from the substrate 11. The second structure 52 can absorb the material of the light-shielding layer 60 to avoid excessive diffusion of the material of the light-shielding layer 60, thereby forming a thicker light-shielding structure 61 and forming a steep side wall of the light-shielding opening 62.

[0067] In some embodiments, Figure 1As shown, the auxiliary function layer 50 includes a plurality of first structures 51 , the first structures 51 include oleophobic material, and the light transmittance of the first structures 51 is greater than 50%, and the first structures 51 are at least partially located in the corresponding light shielding openings 62 .

[0068] For example, Figure 1 As shown, the auxiliary functional layer 50 includes a plurality of first structures 51. When the first structure 51 includes an oleophobic material and the transmittance of the first structure 51 is greater than 50%, the first structure 51 is at least partially located in the corresponding light-shielding opening 62. That is, when a thicker light-shielding layer 60 is formed by a printing process, the first structure 51 of the oleophobic material is pre-formed, and then the light-shielding layer 60 is formed by a printing process. The first structure 51 of the oleophobic material can repel the diffusion of the material of the light-shielding layer 60, thereby forming a thicker light-shielding structure 61 and forming a steeper side wall of the light-shielding opening 62.

[0069] For example, Figure 1 As shown, the transmittance of the first structure 51 is greater than 50%. For example, the transmittance of the first structure 51 can be greater than any value of 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, and 95%, so that the display light emitted by the light-emitting unit 20f can pass through the first structure 51 and then be emitted from the shading opening 62.

[0070] In some embodiments, Figure 1 As shown, the oleophobic material includes an organic substance containing fluorine element.

[0071] For example, Figure 1 As shown, the oleophobic material may include fluorine-containing polydimethylsiloxane (PDMS) or fluorine-containing polyurethane material, etc.

[0072] In some embodiments, Figure 2 As shown, the auxiliary functional layer 50 includes a second structure 52 and a plurality of first openings 521 surrounded by the second structure 52, the second structure 52 includes an oleophilic material, the orthographic projection of the second structure 52 on the plane where the light-emitting device layer 20 is located at least partially overlaps with the spacer 14J1, and the orthographic projection of the first opening 521 on the plane where the light-emitting device layer 20 is located at least partially overlaps with the light-emitting unit 20f; the second structure 52 is located between the shading structure 61 and the encapsulation layer 30.

[0073] For example, in some embodiments, in combination Figure 2 As shown, the auxiliary function layer 50 includes a second structure 52 and a plurality of first openings 521 surrounded by the second structure 52. In a top view (not shown), the second structure 52 may be in a grid shape.

[0074] For example, Figure 2As shown, the auxiliary functional layer 50 includes a second structure 52 and a plurality of first openings 521 surrounded by the second structure 52, the second structure 52 includes an oleophilic material, the orthographic projection of the second structure 52 on the plane where the light-emitting device layer 20 is located at least partially overlaps with the spacer 14J1, and the second structure 52 is located between the shading structure 61 and the encapsulation layer 30, that is, when a thicker shading layer 60 is formed by a printing process, a second structure 52 of oleophilic material is pre-formed, and the material of the shading layer 60 is printed on the surface of the second structure 52 away from the substrate 11, and the second structure 52 can absorb the material of the shading layer 60 to avoid excessive diffusion of the material of the shading layer 60, thereby forming a thicker shading structure 61 and forming a steep side wall of the shading opening 62.

[0075] In some embodiments, Figure 2 As shown, the orthographic projection of the light shielding structure 61 on the substrate 11 is located within the range of the orthographic projection of the second structure 52 on the substrate 11 .

[0076] For example, Figure 2 As shown, the orthographic projection of the light-shielding structure 61 on the substrate 11 is within the range of the orthographic projection of the second structure 52 on the substrate 11, that is, in a direction parallel to the plane where the substrate 11 is located, the edge of the light-shielding structure 61 is flush with the edge of the second structure 52, or the edge of the light-shielding structure 61 is retracted relative to the edge of the second structure 52. When a thicker light-shielding layer 60 is formed by a printing process, it is ensured that the light-shielding structure 61 is formed on the surface of the second structure 52 away from the substrate 11, and that the second structure 52 can absorb the material of the light-shielding layer 60 to avoid excessive diffusion of the material of the light-shielding layer 60 and to avoid diffusion of the material of the light-shielding layer 60 to the position of the light-shielding opening 62. At the same time, the steepness of the side wall of the light-shielding opening 62 can be increased, for example, Figure 2 The angle between the side wall of the middle light-shielding opening 62 and the bottom edge of the light-shielding structure 61 close to the substrate 11 is a first angle α, and the first angle α is greater than 60, so that the light-shielding structure 61 can better block light of a wide viewing angle, that is, the light-shielding structure 61 can block light of a preset viewing angle with a smaller thickness in the direction perpendicular to the plane of the substrate 11.

[0077] In some embodiments, Figure 2 As shown, the light transmittance of the second structure 52 is less than 50%.

[0078] For example, Figure 2 As shown, the transmittance of the second structure 52 is less than 50%. The transmittance of the second structure 52 can be less than any value of 50%, 45%, 40%, 35%, 30%, 25%, 20%, 15%, 10%, and 5%. The second structure 52 can also participate in blocking light with large viewing angles or oblique viewing angles, thereby reducing the thickness of the shading structure 61 in a direction perpendicular to the plane where the substrate 11 is located.

[0079] In some embodiments, Figure 3 As shown, the auxiliary functional layer 50 includes a first structure 51 and a second structure 52; the first structure 51 includes an oleophobic material, and the transmittance of the first structure 51 is greater than 50%, and the first structure 51 is at least partially located in the corresponding light-shielding opening 62; the second structure 52 includes an oleophilic material, and the orthographic projection of the second structure 52 on the plane where the light-emitting device layer 20 is located at least partially overlaps with the spacer 14J1, and the second structure 52 is located between the light-shielding structure 61 and the encapsulation layer 30.

[0080] For example, Figure 3 As shown, Figure 1 and Figure 2 The difference in this example is that the auxiliary functional layer 50 includes a first structure 51 and a second structure 52 .

[0081] For example, Figure 3 As shown, Figure 3 The first structure 51 in the example may have Figure 1 Any one of the features of the first structure 51 in the example, Figure 3 The second structure 52 in the example may have Figure 2 Any feature of the second structure 52 in the example.

[0082] For example, Figure 3 As shown, the auxiliary functional layer 50 includes a plurality of first structures 51 and a second structure 52. When a thicker light-shielding layer 60 is formed by a printing process, a first structure 51 of an oleophobic material is pre-formed at the position of the light-shielding opening 62, and a second structure 52 is pre-arranged at a position overlapping with the light-shielding structure 61. The material of the light-shielding layer 60 is printed on the surface of the second structure 52 away from the substrate 11. The first structure 51 of the oleophobic material can repel the diffusion of the material of the light-shielding layer 60, and the second structure 52 of the oleophilic material can adsorb the material of the light-shielding layer 60, which can better avoid excessive diffusion of the material of the light-shielding layer 60, thereby forming a thicker light-shielding structure 61 and forming a steeper side wall of the light-shielding opening 62 (the first angle α is larger).

[0083] In some embodiments, Figure 3 As shown, in a direction perpendicular to the plane where the substrate 11 is located, the thickness of the first structure 51 is greater than the thickness of the second structure 52 .

[0084] For example, Figure 3As shown, in the direction perpendicular to the plane where the substrate 11 is located, the thickness of the first structure 51 is greater than the thickness of the second structure 52, that is, the thickness of the first structure 51 is greater than the thickness of the second structure 52. When the material of the light-shielding layer 60 is printed on the surface of the second structure 52 away from the substrate 11, the first structure 51 can play a role in limiting the position of the material of the light-shielding layer 60, so that the material of the light-shielding layer 60 contacts the first structure 51, and the first structure 51 of the oleophobic material can repel the diffusion of the material of the light-shielding layer 60, thereby forming a thicker light-shielding structure 61 and forming a steeper side wall of the light-shielding opening 62 (the first angle α is larger).

[0085] If necessary, Figure 4 As shown, the display panel may further include a touch layer 80, which is located between the auxiliary function layer 50 and the encapsulation layer 30. The touch layer 80 may include a first touch metal layer 81, a first touch insulating layer 82, a second touch metal layer 83, and a second touch insulating layer 84, which are sequentially stacked in a direction perpendicular to the plane where the substrate 11 is located. The second touch metal layer 83 may include a plurality of touch electrodes, and the first touch metal layer 81 may include a plurality of bridging electrodes, which may connect corresponding and adjacent touch electrodes. The structure of the touch layer 80 is not limited to this.

[0086] If necessary, Figures 1 to 4 As shown, the display panel 100 also includes a flat layer 70, which is located on the side of the light-shielding layer 60 away from the substrate 11. In the direction perpendicular to the plane where the substrate 11 is located, the thickness of the flat layer 70 is greater than the thickness of the light-shielding layer 60. The flat layer 70 covers the light-shielding layer 60, and the flat layer has the function of flattening the surface of the side of the light-shielding layer 60 away from the substrate 11.

[0087] See also Figures 5 to 7 . Figure 5 A schematic diagram of a method for manufacturing a display panel provided in an embodiment of the present application. Figure 6 A schematic diagram of a first intermediate process of a method for manufacturing a display panel provided in an embodiment of the present application. Figure 7 A schematic diagram of a second intermediate process of a method for manufacturing a display panel provided in an embodiment of the present application.

[0088] The present application provides a method for manufacturing a display panel. Any of the above display panels can be manufactured using this method for manufacturing a display panel. Figure 5 As shown, the manufacturing method of the display panel includes step S100, step S200, step S300, step S400, and step S500.

[0089] Step S100, providing a substrate.

[0090] Illustratively, a substrate 11 is provided.

[0091] In step S200, a light-emitting device layer and a spacer layer are formed on one side of the substrate, wherein the light-emitting device layer includes a plurality of light-emitting units spaced apart from each other, and the spacer layer includes a spacer portion, which is located between two adjacent light-emitting units on a plane parallel to the substrate.

[0092] For example, a light-emitting device layer 20 and a spacer layer 14J are formed on one side of the substrate 11, the light-emitting device layer 20 includes a plurality of light-emitting units 20f spaced apart, and the spacer layer 14J includes a spacer portion 14J1, which is located between two adjacent light-emitting units 20f on a plane parallel to the substrate 11.

[0093] Step S300: forming an encapsulation layer on a side of the light-emitting device layer away from the substrate.

[0094] By way of example, the encapsulation layer 30 is formed on a side of the light emitting device layer 20 away from the substrate 11 .

[0095] Step S400: forming an auxiliary functional layer on a side of the encapsulation layer away from the substrate, wherein the material of the auxiliary functional layer includes at least one of an oleophilic material and an oleophobic material.

[0096] For example, the auxiliary functional layer 50 is formed on a side of the encapsulation layer 30 away from the substrate 11 , and the material of the auxiliary functional layer 50 includes at least one of an oleophilic material and an oleophobic material.

[0097] Step S500, forming a light-shielding layer on a side of the encapsulation layer away from the substrate, the light-shielding layer comprising a light-shielding structure and a plurality of light-shielding openings surrounded by the light-shielding structure, the orthographic projection of the light-shielding structure on the light-emitting device layer at least partially overlaps with the spacer, the orthographic projection of the light-shielding opening on the light-emitting device layer at least partially overlaps with the light-emitting unit, the auxiliary functional layer is arranged in contact with the light-shielding layer, the light-shielding layer comprises an oleophilic material, and the thickness of the light-shielding structure in a direction perpendicular to the plane where the substrate is located is greater than or equal to 10 microns.

[0098] For example, a shading layer 60 is formed on a side of the encapsulation layer 30 away from the substrate 11, the shading layer 60 includes a shading structure 61 and a plurality of shading openings 62 surrounded by the shading structure 61, the orthographic projection of the shading structure 61 on the light-emitting device layer 20 at least partially overlaps with the spacer 14J1, the orthographic projection of the light-shading opening 62 on the light-emitting device layer 20 at least partially overlaps with the light-emitting unit 20f, the auxiliary functional layer 50 is arranged in contact with the shading layer 60, the shading layer 60 includes an oleophilic material, and the thickness of the shading structure 61 in a direction perpendicular to the plane where the substrate 11 is located is greater than or equal to 10 microns.

[0099] For example, Figure 6 and Figure 1 As shown, when a thicker light shielding layer 60 is formed by a printing process, the pre-formed first structure 51 of oleophobic material can repel the diffusion of the material of the light shielding layer 60, thereby forming a thicker light shielding structure 61 and forming a steeper side wall of the light shielding opening 62.

[0100] For example, Figure 7 and Figure 2 As shown, when a thicker light-shielding layer 60 is formed by a printing process, a second structure 52 of an oleophilic material is formed in advance, and the material of the light-shielding layer 60 is printed on the surface of the second structure 52 away from the substrate 11. The second structure 52 can absorb the material of the light-shielding layer 60 to avoid excessive diffusion of the material of the light-shielding layer 60, thereby forming a thicker light-shielding structure 61 and forming a steep side wall of the light-shielding opening 62.

[0101] For example, in some other embodiments, please combine Figure 3 As shown, a first structure 51 of oleophobic material is pre-formed at the position of the light-shielding opening 62, a second structure 52 is pre-arranged at a position overlapping with the light-shielding structure 61, and the material of the light-shielding layer 60 is printed on the surface of the second structure 52 away from the substrate 11. The first structure 51 of oleophobic material can repel the diffusion of the material of the light-shielding layer 60, and the second structure 52 of oleophilic material can adsorb the material of the light-shielding layer 60, which can better avoid excessive diffusion of the material of the light-shielding layer 60, thereby forming a thicker light-shielding structure 61 and a steeper side wall of the light-shielding opening 62 (the first angle α is larger).

[0102] See also Figure 8 , Figure 8 A schematic diagram of a display device provided in an embodiment of the present application.

[0103] On the third aspect, based on the same application concept, the present application also provides a display device 200, the display device 200 includes any one of the display panels 100 described above, or the display device 200 includes a display panel 100 that combines any several of the features described above.

[0104] For example, the display device 200 also has the beneficial effects of the display panel 100 in the above embodiment. The similarities can be understood by referring to the above explanation of the display panel 100 and will not be described in detail below.

[0105] For example, the display device 200 provided in the embodiment of the present application can be a vehicle as shown in the schematic diagram, or it can be any electronic product with a display function, including but not limited to the following categories: televisions, laptops, desktop displays, tablet computers, digital cameras, smart bracelets, smart glasses, vehicle-mounted displays, industrial control equipment, medical display screens, touch interactive terminals, etc. The embodiment of the present application does not make any special limitations on this.

[0106] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0107] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A display panel, characterized in that: include: substrate; A light-emitting device layer, located on one side of the substrate, the light-emitting device layer comprising a plurality of light-emitting units arranged at intervals; A spacing layer, comprising a spacing portion, which is located between two adjacent light-emitting units on a plane parallel to the substrate; An encapsulation layer, located on a side of the light-emitting device layer away from the substrate; an auxiliary functional layer, located on a side of the encapsulation layer away from the substrate; a light shielding layer, located on a side of the encapsulation layer away from the substrate, the light shielding layer comprising a light shielding structure and a plurality of light shielding openings surrounded by the light shielding structure, the orthographic projection of the light shielding structure on the light-emitting device layer at least partially overlaps with the spacer, the orthographic projection of the light shielding opening on the light-emitting device layer at least partially overlaps with the light-emitting unit, and the auxiliary function layer is arranged in contact with the light shielding layer; The light-shielding layer comprises an oleophilic material, the material of the auxiliary functional layer comprises at least one of an oleophilic material and an oleophobic material, and the thickness of the light-shielding structure in a direction perpendicular to the plane where the substrate is located is greater than or equal to 10 microns.

2. The display panel according to claim 1, characterized in that: The auxiliary functional layer includes a plurality of first structures, wherein the first structures include the oleophobic material, and the light transmittance of the first structures is greater than 50%, and the first structures are at least partially located in the corresponding light-shielding openings.

3. The display panel according to claim 2, characterized in that: The oleophobic material includes an organic substance containing fluorine element.

4. The display panel according to claim 1, characterized in that: The auxiliary function layer includes a second structure and a plurality of first openings surrounded by the second structure, the second structure includes the oleophilic material, the orthographic projection of the second structure on the plane where the light-emitting device layer is located at least partially overlaps with the spacer, and the orthographic projection of the first opening on the plane where the light-emitting device layer is located at least partially overlaps with the light-emitting unit; The second structure is located between the light shielding structure and the encapsulation layer.

5. The display panel according to claim 4, characterized in that: The orthographic projection of the light shielding structure on the substrate is located within the range of the orthographic projection of the second structure on the substrate.

6. The display panel according to claim 4, characterized in that: The light transmittance of the second structure is less than 50%.

7. The display panel according to claim 1, characterized in that: The auxiliary function layer includes a first structure and a second structure; The first structure includes the oleophobic material, and the light transmittance of the first structure is greater than 50%, and the first structure is at least partially located in the corresponding light shielding opening; The second structure includes the oleophilic material, the orthographic projection of the second structure on the plane where the light-emitting device layer is located at least partially overlaps with the spacer, and the second structure is located between the light-shielding structure and the encapsulation layer.

8. The display panel according to claim 7, characterized in that: In a direction perpendicular to a plane where the substrate is located, a thickness of the first structure is greater than a thickness of the second structure.

9. A method for manufacturing a display panel, characterized in that: include: providing a substrate; A light-emitting device layer and a spacer layer are formed on one side of the substrate, wherein the light-emitting device layer includes a plurality of light-emitting units arranged at intervals, and the spacer layer includes a spacer portion, and the spacer portion is located between two adjacent light-emitting units on a plane parallel to the substrate; forming an encapsulation layer on a side of the light-emitting device layer away from the substrate; forming an auxiliary functional layer on a side of the encapsulation layer away from the substrate, wherein a material of the auxiliary functional layer includes at least one of an oleophilic material and an oleophobic material; A light-shielding layer is formed on a side of the encapsulation layer away from the substrate, the light-shielding layer includes a light-shielding structure and a plurality of light-shielding openings surrounded by the light-shielding structure, the orthographic projection of the light-shielding structure on the light-emitting device layer at least partially overlaps with the spacer, the orthographic projection of the light-shielding opening on the light-emitting device layer at least partially overlaps with the light-emitting unit, the auxiliary function layer is arranged in contact with the light-shielding layer, the light-shielding layer includes an oleophilic material, and the thickness of the light-shielding structure in a direction perpendicular to the plane where the substrate is located is greater than or equal to 10 microns.

10. A display device, characterized in that: The invention comprises the display panel as claimed in any one of claims 1 to 8.

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