Display panel, manufacturing method thereof, and display device

Abstract

The application relates to a display panel and a manufacturing method thereof and a display device, the display panel comprising: a light-emitting device layer located on one side of a substrate, the light-emitting device layer comprising a plurality of spaced light-emitting units; a spacing layer comprising a spacing part located between two adjacent light-emitting units; an auxiliary functional layer located on a side of the spacing layer away from the substrate; a light-blocking layer located on a side of an encapsulation layer away from the substrate, the light-blocking layer comprising a light-blocking structure and a plurality of light-blocking openings surrounded by the light-blocking structure, a normal projection of the light-blocking structure on the light-emitting device layer at least partially overlapping the spacing part, a normal projection of the light-blocking opening on the light-emitting device layer at least partially overlapping the light-emitting unit, and the auxiliary functional layer being in contact with the light-blocking layer; the material of the auxiliary functional layer comprising at least one of oleophilic material and oleophobic material, and the thickness of the light-blocking structure in a direction perpendicular to the plane of the substrate being greater than or equal to 10 microns. The application realizes a display panel with a narrow viewing angle.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display panel, its manufacturing method, and a display device. Background Technology

[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] Therefore, it is necessary to provide a display panel and its manufacturing method, as well as a display device, in order to solve the urgent problem of how to achieve a narrow viewing angle design with a simplified structure and manufacturing process.

[0005] In a first aspect, embodiments of this application provide a display panel, including:

[0006] Base;

[0007] A light-emitting device layer is located on one side of the substrate, and the light-emitting device layer includes a plurality of spaced-apart light-emitting units;

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

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

[0010] An auxiliary functional layer is located on the side of the encapsulation layer away from the substrate;

[0011] A light-shielding layer is located 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 orthographic projection of the light-shielding structure on the light-emitting device layer at least partially overlaps with the spacer portion. The orthographic projection of the light-shielding openings on the light-emitting device layer at least partially overlaps with the light-emitting unit. The auxiliary functional layer is disposed in contact with the light-shielding layer.

[0012] The light-shielding layer comprises an oleophilic material, 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 the direction perpendicular to the plane of the substrate is greater than or equal to 10 micrometers.

[0013] In some embodiments, the auxiliary functional layer includes a plurality of first structures, each first structure including the oleophobic material, and the light transmittance of the first structure is greater than 50%, and the first structure is at least partially located within the corresponding light-shielding opening.

[0014] In some embodiments, the oleophobic material comprises an organic compound containing fluorine.

[0015] In some embodiments, the auxiliary functional layer includes a second structure and a plurality of first openings surrounding the second structure, the second structure including the oleophilic material, the orthographic projection of the second structure on the plane where the light-emitting device layer is located at least partially overlapping the spacer portion, and the orthographic projection of the first openings on the plane where the light-emitting device layer is located at least partially overlapping the light-emitting unit;

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

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

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

[0019] In some implementations, 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 within the corresponding light-shielding opening;

[0021] The second structure includes the oleophilic material, and 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 light-shielding structure and the encapsulation layer.

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

[0023] Secondly, based on the same concept, this application also provides a method for manufacturing a display panel, comprising:

[0024] Provide a base;

[0025] A light-emitting device layer and a spacer layer are formed on one side of the substrate. The light-emitting device layer includes a plurality of spaced light-emitting units, and the spacer layer includes a spacer portion located between two adjacent light-emitting units on a plane parallel to the substrate.

[0026] An encapsulation layer is formed on the side of the light-emitting device layer away from the substrate;

[0027] An auxiliary functional layer is formed on the side of the encapsulation layer away from the substrate, and the material of the auxiliary functional layer includes at least one of an oleophilic material and an oleophobic material;

[0028] A light-shielding layer is formed 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 orthographic projection of the light-shielding structure on the light-emitting device layer at least partially overlaps with the spacer portion. The orthographic projection of the light-shielding openings on the light-emitting device layer at least partially overlaps with the light-emitting unit. The auxiliary functional layer is disposed in contact with the light-shielding layer. The light-shielding layer includes an oleophilic material. The thickness of the light-shielding structure in the direction perpendicular to the plane of the substrate is greater than or equal to 10 micrometers.

[0029] Thirdly, based on the same concept, embodiments of this application also provide a display device, which includes any of the display panels provided in the first aspect.

[0030] In this embodiment, an auxiliary functional layer and a light-shielding layer are provided on the side of the encapsulation layer away from the substrate. The light-shielding layer includes a light-shielding structure and multiple light-shielding openings surrounding the light-shielding structure. The light-shielding openings allow display light to pass through, and the light-shielding structure can block display light emitted from a wide viewing angle to achieve a narrow viewing angle. The light-shielding layer includes an oleophilic material, and the auxiliary functional layer includes at least one of an oleophilic material and an oleophobic material. The auxiliary functional layer can make the light-shielding layer thicker. For example, the thickness of the light-shielding structure in the direction perpendicular to the plane of the substrate is greater than or equal to 10 micrometers. The auxiliary functional layer can make it possible to manufacture a thicker light-shielding layer through a printing process, simplifying the manufacturing process and the display panel structure. 1) In a first aspect, the auxiliary functional layer includes multiple first structures. When the first structure includes an oleophobic material, and the light transmittance of the first structure is greater than 50%, the first structure is at least partially located within the corresponding light-shielding opening. That is, when a thicker light-shielding layer is formed through a printing process, the pre-formed oleophobic material first structure can repel the diffusion of the material in the light-shielding layer, thereby forming a thicker light-shielding structure and a steeper sidewall of the light-shielding opening. 2) In the second aspect, the auxiliary functional layer includes a second structure and a plurality of first openings surrounding 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 light-shielding structure and the encapsulation layer. That is, when a thick light-shielding layer is formed by the printing process, a second structure of oleophilic material is pre-formed. The material of the light-shielding layer is printed on the surface of the second structure away from the substrate. The second structure can adsorb the material of the light-shielding layer to avoid excessive diffusion of the material of the light-shielding layer, thereby forming a thick light-shielding structure and forming the sidewalls of the steep light-shielding openings. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of a first cross-sectional structure of a display panel provided in an embodiment of this application.

[0033] Figure 2 This is a schematic diagram of a second cross-sectional structure of a display panel provided in an embodiment of this application.

[0034] Figure 3 This is a schematic diagram of a third cross-sectional structure of a display panel provided in an embodiment of this application.

[0035] Figure 4This is a schematic diagram of a fourth cross-sectional structure of a display panel provided in an embodiment of this application.

[0036] Figure 5 This is a schematic diagram illustrating a method for manufacturing a display panel according to an embodiment of this application.

[0037] Figure 6 This is a schematic diagram of the first intermediate process of a method for manufacturing a display panel according to an embodiment of this application.

[0038] Figure 7 This is a schematic diagram of the second intermediate process of a method for manufacturing a display panel according to an embodiment of this application.

[0039] Figure 8 This is a schematic diagram of a display device provided in an embodiment of this application.

[0040] Figure label:

[0041] Display device 200; display panel 100; substrate 11; light-emitting device layer 20; spacer layer 14J; encapsulation layer 30; auxiliary function layer 50; light-shielding layer 60; light-emitting unit 20f; spacer portion 14J1; light-shielding structure 61; light-shielding 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 included 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; planarization layer 70. Detailed Implementation

[0042] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of this application.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated 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 may be directly on the other element or there may be intermediate elements present. Furthermore, when a layer is referred to as being "below" another layer, it may be directly below it or there may be one or more intermediate elements present. It is also understood that when a layer is referred to as being "between" two layers, it may be the only layer between the two layers, or there may be one or more intermediate elements present.

[0045] When using the terms “including,” “having,” and “comprising” as described herein, another component may be added unless explicitly qualifying terms such as “only,” “consisting of,” etc. are used. Unless otherwise stated, singular terms may include plural forms and should not be construed as having a quantity of one.

[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 used only to distinguish one element from another. For example, without departing from the scope of this application, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0047] It should also be understood that, in interpreting an element, although not explicitly described, the element is interpreted as including a range of error, which should be within the acceptable deviation range of a particular value as determined by a person skilled in the art. For example, "approximately," "about," or "substantially" can mean within one or more standard deviations, without limitation herein.

[0048] Furthermore, in the instruction manual, the phrase "planar distribution diagram" refers to the diagram when the target part is viewed from above, and the phrase "cross-sectional diagram" refers to the diagram when the target part is viewed from the side as a cross-section taken by vertically cutting the target part.

[0049] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the components are shown in the drawings only as examples and not necessarily to actual scale.

[0050] Various modifications and variations can be made to this application without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, this application is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) 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 section, 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. For example, display panels used in vehicles require narrow viewing angles to achieve privacy protection. However, while achieving good privacy protection, the structure of the display panel should not be complicated, nor should the manufacturing process of the display panel be complicated, so as to avoid a significant increase in the cost of the display panel.

[0052] Based on the aforementioned technical problems, the inventors discovered that by setting an auxiliary functional layer and a light-shielding layer on the side of the encapsulation layer away from the substrate, the light-shielding layer includes a light-shielding structure and multiple light-shielding openings surrounding the light-shielding structure. The light-shielding openings allow display light to pass through, while the light-shielding structure blocks display light emitted from a wide viewing angle, thereby achieving a narrow viewing angle. The light-shielding layer includes an oleophilic material, and the auxiliary functional layer is made of at least one of an oleophilic material and an oleophobic material. The auxiliary functional layer can make the light-shielding layer thicker, for example, the thickness of the light-shielding structure in the direction perpendicular to the plane of the substrate is greater than or equal to 10 micrometers. The auxiliary functional layer can make it possible to manufacture a thicker light-shielding layer through a printing process, simplifying the manufacturing process and the display panel structure. 1) In a first aspect, the auxiliary functional layer includes multiple first structures. When the first structure includes an oleophobic material, and the light transmittance of the first structure is greater than 50%, the first structure is at least partially located within the corresponding light-shielding opening. That is, when a thicker light-shielding layer is formed by a printing process, the pre-formed oleophobic material first structure can repel the diffusion of the light-shielding layer material, thereby forming a thicker light-shielding structure and a steeper sidewall of the light-shielding opening. 2) In a second aspect, the auxiliary functional layer includes a second structure and multiple first openings surrounding the second structure. When the second structure includes an oleophilic material, the orthographic projection of the second structure onto the plane of the light-emitting device layer at least partially overlaps with the spacer portion. 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 oleophilic material is pre-formed. The material of the light-shielding layer is printed on the surface of the second structure away from the substrate. The second structure can adsorb the material of the light-shielding layer, preventing excessive diffusion of the material of the light-shielding layer, thereby forming a thicker light-shielding structure and a steeper sidewall 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 clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0054] Please see Figures 1 to 4 . Figure 1 This is a schematic diagram of a first cross-sectional structure of a display panel provided in an embodiment of this application. Figure 2 This is a schematic diagram of a second cross-sectional structure of a display panel provided in an embodiment of this application. Figure 3 This is a schematic diagram of a third cross-sectional structure of a display panel provided in an embodiment of this application. Figure 4 This is a schematic diagram of a fourth cross-sectional structure of a display panel provided in an embodiment of this application.

[0055] This 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 functional layer 50, and a light-shielding layer 60. The light-emitting device layer 20 is located on one side of the substrate 11 and includes a plurality of spaced-apart light-emitting units 20f. The spacer layer 14J includes spacers 14J1 located between adjacent light-emitting units 20f on a plane parallel to the substrate 11. The encapsulation layer 30 is located on the side of the light-emitting device layer 20 away from the substrate 11. 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. 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 portion 14J1. The orthographic projection of the light-shielding openings 62 on the light-emitting device layer 20 at least partially overlaps with the light-emitting unit 20f. The auxiliary functional layer 50 is disposed in contact with the light-shielding layer 60. The light-shielding layer 60 includes an oleophilic material, and the auxiliary functional layer 50 includes at least one of an oleophilic material and an oleophobic material. The thickness of the light-shielding structure 61 in the direction perpendicular to the plane of the substrate 11 is greater than or equal to 10 micrometers.

[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, the array composite layer 12 may include a plurality of pixel driving circuits 121; a first electrode layer 13 is located on the side of the array composite layer 12 away from the substrate 11, the first electrode layer 13 includes a plurality of first electrodes 131, the first electrodes 131 being electrically connected to the pixel driving circuits 121; a pixel definition layer 14 may be disposed on the side of the first electrode layer 13 away from the substrate 11, the pixel definition layer 14 including 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 emits light... The light-emitting functional layer 21 is at least partially located within the pixel opening 142. The first electrode 131, the light-emitting functional layer 21, and the second electrode 22 are stacked in a direction perpendicular to the plane of the substrate 11. 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 this embodiment, the first electrode 131 is used as an anode and the second electrode 22 is used as a cathode. The encapsulation layer 30 is located on the side of the light-emitting device layer 20 away from the substrate 11. The encapsulation layer 30 can be a thin film encapsulation layer. The encapsulation layer 30 can include at least one inorganic material film layer and at least one organic material film layer stacked and alternately arranged in a direction perpendicular to the plane of the substrate 11.

[0057] For example, the light-emitting device layer 20 includes a plurality of spaced light-emitting units 20f. 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. However, the display panel 100 can also be other types of display panels.

[0058] For example, the spacer layer 14J includes a spacer portion 14J1 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 the pixel definition structure 141.

[0059] For example, in a top view (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, and the light-shielding layer 60 or the light-shielding structure 61 may be in the form of a grid.

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

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

[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. 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 onto the light-emitting device layer 20 at least partially overlaps with the spacer portion 14J1. The orthographic projection of the light-shielding openings 62 onto the light-emitting device layer 20 at least partially overlaps with the light-emitting unit 20f. The auxiliary functional layer 50 is disposed in contact with the light-shielding layer 60. The light-shielding layer 60 comprises an oleophilic material, and the material of the auxiliary functional layer 50 comprises at least one of an oleophilic material and an oleophobic material. The thickness of the light-shielding structure 61 in the direction perpendicular to the plane of the substrate 11 is greater than or equal to 10 micrometers.

[0063] For example, a light-shielding layer 60 is provided on the 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 openings 62 can transmit display light. The light-shielding structure 61 can block display light emitted from a wide viewing angle to achieve a narrow viewing angle. For example, the light-shielding structure 61 can block light from a viewing angle greater than a preset viewing angle or light from an oblique viewing angle. For example, the light-shielding structure 61 can block light from any of the following viewing angles: 45 degrees, 47 degrees, 50 degrees, 52 degrees, 55 degrees, 57 degrees, 60 degrees, 52 degrees, and 65 degrees. This allows for the creation of a display panel with a narrow viewing angle or a preset viewing angle design.

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

[0065] For example, the inventors discovered that the light-shielding layer 60 includes an oleophilic material, such as black photoresist. An auxiliary functional layer 50 can be provided, and the auxiliary functional layer 50 is made of at least one of an oleophilic material and an oleophobic material. The auxiliary functional layer 50 is disposed 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 the direction perpendicular to the plane of the substrate 11 is greater than or equal to 10 micrometers. The auxiliary functional layer 50 can make the thicker light-shielding layer 60 possible to be manufactured by a printing process (such as inkjet printing), simplifying the manufacturing process and the structure of the display panel 100.

[0066] In this embodiment, an auxiliary functional layer 50 and a light-shielding layer 60 are provided on the 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 openings 62 can transmit display light, and the light-shielding structure 61 can block display light emitted from a wide 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 light-shielding layer 60 thicker. For example, the thickness of the light-shielding structure 61 in the direction perpendicular to the plane of the substrate 11 is greater than or equal to 10 micrometers. The auxiliary functional layer 50 can make the thicker light-shielding layer 60 possible through a printing process, 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 light transmittance of the first structure 51 is greater than 50%, the first structure 51 is at least partially located within the corresponding light-shielding opening 62. That is, when a thicker light-shielding layer 60 is formed by the printing process, the first structure 51 of the pre-formed 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 sidewall 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 the light-shielding layer 60 with a large thickness is formed by the printing process, the second structure 52 with an oleophilic material is formed in advance. 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 adsorb the material of the light-shielding layer 60 and avoid excessive diffusion of the material of the light-shielding layer 60, thereby forming a thicker light-shielding structure 61 and forming the sidewall of the steep light-shielding opening 62.

[0067] In some implementations, such as Figure 1As shown, the auxiliary functional layer 50 includes a plurality of first structures 51, each first structure 51 comprising an oleophobic material and having a light transmittance greater than 50%, and each first structure 51 being at least partially located within a corresponding light-shielding opening 62.

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

[0069] For example, such as Figure 1 As shown, the light transmittance of the first structure 51 is greater than 50%. For example, the light transmittance of the first structure 51 can be greater than any value among 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 exit from the light-shielding opening 62.

[0070] In some implementations, such as Figure 1 As shown, oleophobic materials include organic compounds containing fluorine.

[0071] For example, such as Figure 1 As shown, oleophobic materials may include fluorinated polydimethylsiloxane (PDMS) or fluorinated polyurethane materials, etc.

[0072] In some implementations, such as 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 portion 14J1. The orthographic projection of the first openings 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 light-shielding structure 61 and the encapsulation layer 30.

[0073] For example, in some implementations, combined with 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. In the top view (not shown), the second structure 52 may be in the form of a grid.

[0074] For example, such as 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 portion 14J1. The second structure 52 is located between the light-shielding structure 61 and the encapsulation layer 30. That is, when the light-shielding layer 60 with a large thickness is formed by the printing process, the second structure 52 with an oleophilic material is formed in advance. 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 adsorb 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 the sidewalls of the steep light-shielding openings 62.

[0075] In some implementations, such as 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.

[0076] For example, such as Figure 2 As shown, the orthographic projection of the light-shielding structure 61 onto the substrate 11 lies within the range of the orthographic projection of the second structure 52 onto the substrate 11. That is, in a direction parallel to the plane of the substrate 11, 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 recessed relative to the edge of the second structure 52. When forming a relatively thick light-shielding layer 60 through 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, ensuring that the second structure 52 can adsorb the material of the light-shielding layer 60, preventing excessive diffusion of the material of the light-shielding layer 60, and preventing the material of the light-shielding layer 60 from diffusing to the position of the light-shielding opening 62. Simultaneously, the steepness of the sidewalls of the light-shielding opening 62 can be increased, for example... Figure 2 The angle between the sidewall of the light-shielding opening 62 and the bottom edge of the light-shielding structure 61 near the base 11 is the first angle α, which makes the first angle α greater than 60°. This allows the light-shielding structure 61 to better block light from a wide viewing angle. In other words, the light-shielding structure 61 can block light from a preset viewing angle with a smaller thickness in the direction perpendicular to the plane of the base 11.

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

[0078] For example, such as Figure 2 As shown, the light transmittance of the second structure 52 is less than 50%. The light transmittance of the second structure 52 can be less than any value among 50%, 45%, 40%, 35%, 30%, 25%, 20%, 15%, 10%, and 5%. The second structure 52 can also participate in blocking light from large or oblique angles, thereby reducing the thickness of the light-shielding structure 61 in the direction perpendicular to the plane of the base 11.

[0079] In some implementations, such as 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 has a light transmittance greater than 50%, and the first structure 51 is at least partially located within 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 portion 14J1, and the second structure 52 is located between the light-shielding structure 61 and the encapsulation layer 30.

[0080] For example, such as Figure 3 As shown, with Figure 1 and Figure 2 The example differs in that the auxiliary function layer 50 includes a first structure 51 and a second structure 52.

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

[0082] For example, such as Figure 3 As shown, the auxiliary functional layer 50 includes multiple first structures 51 and second structures 52. When forming a thicker light-shielding layer 60 through a printing process, the first structure 51 of oleophobic material is pre-formed at the position of the light-shielding opening 62, and the second structure 52 is pre-set at the position where it overlaps 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 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 forming a steeper sidewall of the light-shielding opening 62 (with a larger first included angle α).

[0083] In some implementations, such as Figure 3 As shown, in the direction perpendicular to the plane of the base 11, the thickness of the first structure 51 is greater than the thickness of the second structure 52.

[0084] For example, such as Figure 3As shown, in the direction perpendicular to the plane of the substrate 11, 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 limit 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. The oleophobic material of the first structure 51 can repel the diffusion of the material of the light-shielding layer 60, thereby forming a thicker light-shielding structure 61 and forming a steep sidewall of the light-shielding opening 62 (the first included angle α is larger).

[0085] It needs to be explained, such as Figure 4 As shown, the display panel may also 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 stacked sequentially in a direction perpendicular to the plane of the substrate 11. The second touch metal layer 83 may include multiple touch electrodes, and the first touch metal layer 81 may include multiple bridging electrodes. The bridging electrodes may connect to corresponding and adjacent touch electrodes. The structure of the touch layer 80 is not limited to this.

[0086] It needs to be explained, such as Figures 1 to 4 As shown, the display panel 100 also includes a planarization 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 of the substrate 11, the thickness of the planarization layer 70 is greater than the thickness of the light-shielding layer 60. The planarization layer 70 covers the light-shielding layer 60 and has the function of planarizing the surface of the light-shielding layer 60 away from the substrate 11.

[0087] Please see Figures 5 to 7 . Figure 5 This is a schematic diagram illustrating a method for manufacturing a display panel according to an embodiment of this application. Figure 6 This is a schematic diagram of the first intermediate process of a method for manufacturing a display panel according to an embodiment of this application. Figure 7 This is a schematic diagram of the second intermediate process of a method for manufacturing a display panel according to an embodiment of this application.

[0088] This application provides a method for manufacturing a display panel, and the display panel described in any of the above-mentioned embodiments can be manufactured using this method. Figure 5 As shown, the manufacturing method of this display panel includes steps S100, S200, S300, S400, and S500.

[0089] Step S100: Provide a substrate.

[0090] For example, a base 11 is provided.

[0091] Step S200: A light-emitting device layer and a spacer layer are formed on one side of the substrate. The light-emitting device layer includes a plurality of spaced light-emitting units. The spacer layer includes a spacer portion 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 a substrate 11. The light-emitting device layer 20 includes a plurality of spaced light-emitting units 20f, and the spacer layer 14J includes a spacer portion 14J1. On a plane parallel to the substrate 11, the spacer portion 14J1 is located between two adjacent light-emitting units 20f.

[0093] Step S300: An encapsulation layer is formed on the side of the light-emitting device layer away from the substrate.

[0094] For example, an encapsulation layer 30 is formed on the side of the light-emitting device layer 20 away from the substrate 11.

[0095] Step S400: An auxiliary functional layer is formed on the side of the encapsulation layer away from the substrate. The material of the auxiliary functional layer includes at least one of an oleophilic material and an oleophobic material.

[0096] For example, an auxiliary functional layer 50 is formed on the 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: A light-shielding layer is formed 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 orthographic projection of the light-shielding structure on the light-emitting device layer at least partially overlaps with the spacer portion. The orthographic projection of the light-shielding openings on the light-emitting device layer at least partially overlaps with the light-emitting unit. The auxiliary functional layer is disposed in contact with the light-shielding layer. The light-shielding layer includes an oleophilic material. The thickness of the light-shielding structure in the direction perpendicular to the plane of the substrate is greater than or equal to 10 micrometers.

[0098] For example, a light-shielding layer 60 is formed on the 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 orthographic projection of the light-shielding structure 61 on the light-emitting device layer 20 at least partially overlaps with the spacer portion 14J1. The orthographic projection of the light-shielding openings 62 on the light-emitting device layer 20 at least partially overlaps with the light-emitting unit 20f. The auxiliary functional layer 50 is disposed in contact with the light-shielding layer 60. The light-shielding layer 60 includes an oleophilic material. The thickness of the light-shielding structure 61 in the direction perpendicular to the plane of the substrate 11 is greater than or equal to 10 micrometers.

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

[0100] For example, such as Figure 7 and Figure 2 As shown, when a thick light-shielding layer 60 is formed by printing process, a second structure 52 of 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 adsorb the material of the light-shielding layer 60, avoiding excessive diffusion of the material of the light-shielding layer 60, thereby forming a thick light-shielding structure 61 and forming the sidewall of the steep light-shielding opening 62.

[0101] For example, in some other embodiments, please refer to Figure 3 As shown, a first structure 51 of oleophobic material is pre-formed at the position of the light-shielding opening 62, and a second structure 52 is pre-set at the position of 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 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 forming a steeper sidewall of the light-shielding opening 62 (with a larger first included angle α).

[0102] Please see Figure 8 , Figure 8 This is a schematic diagram of a display device provided in an embodiment of this application.

[0103] Thirdly, based on the same concept, this application also provides a display device 200, which includes a display panel 100 of any of the above features, or a display panel 100 that combines any of the above features.

[0104] For example, the display device 200 also has the beneficial effects of the display panel 100 in the above embodiments. The similarities can be understood with reference to the explanation of the display panel 100 above, and will not be repeated below.

[0105] For example, the display device 200 provided in this application embodiment can be a vehicle as shown in the schematic diagram, or any electronic product with display function, including but not limited to the following categories: television, laptop, desktop monitor, tablet computer, digital camera, smart bracelet, smart glasses, vehicle display, industrial control equipment, medical display screen, touch interactive terminal, etc. This application embodiment does not make any special limitation in this regard.

[0106] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0107] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A display panel, characterized in that, include: Base; A light-emitting device layer is located on one side of the substrate, and the light-emitting device layer includes a plurality of spaced-apart light-emitting units; A spacer layer, including a spacer portion, is located between two adjacent light-emitting units on a plane parallel to the substrate; An encapsulation layer is located on the side of the light-emitting device layer away from the substrate; An auxiliary functional layer is located on the side of the encapsulation layer away from the substrate; A light-shielding layer is located 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 orthographic projection of the light-shielding structure on the light-emitting device layer at least partially overlaps with the spacer portion. The orthographic projection of the light-shielding openings on the light-emitting device layer at least partially overlaps with the light-emitting unit. The auxiliary functional layer is disposed in contact with the light-shielding layer. The light-shielding layer comprises an oleophilic material, the auxiliary functional layer comprises an oleophilic material, and the thickness of the light-shielding structure in the direction perpendicular to the plane of the substrate is greater than or equal to 10 micrometers. The auxiliary functional layer includes a second structure and a plurality of first openings surrounding 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 portion. 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.

2. The display panel according to claim 1, characterized in that, The orthographic projection of the light-shielding structure onto the substrate falls within the range of the orthographic projection of the second structure onto the substrate.

3. The display panel according to claim 1, characterized in that, The light transmittance of the second structure is less than 50%.

4. The display panel according to claim 1, characterized in that, The auxiliary function layer also includes a first structure; The first structure comprises an oleophobic material and has a light transmittance greater than 50%, and the first structure is at least partially located within the corresponding light-shielding opening.

5. The display panel according to claim 4, characterized in that, In a direction perpendicular to the plane of the substrate, the thickness of the first structure is greater than the thickness of the second structure.

6. A method for manufacturing a display panel, characterized in that, include: Provide a base; A light-emitting device layer and a spacer layer are formed on one side of the substrate. The light-emitting device layer includes a plurality of spaced light-emitting units, and the spacer layer includes a spacer portion located between two adjacent light-emitting units on a plane parallel to the substrate. An encapsulation layer is formed on the side of the light-emitting device layer away from the substrate; An auxiliary functional layer is formed on the side of the encapsulation layer away from the substrate, and the material of the auxiliary functional layer includes an oleophilic material; A light-shielding layer is formed 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 surrounding 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 portion. The orthographic projection of the light-shielding openings on the light-emitting device layer at least partially overlaps with the light-emitting unit. An auxiliary functional layer is disposed in contact with the light-shielding layer. The light-shielding layer includes an oleophilic material. The thickness of the light-shielding structure in the direction perpendicular to the plane of the substrate is greater than or equal to 10 micrometers. The auxiliary functional layer includes a second structure and a plurality of first openings surrounding the second structure. The second structure includes the oleophilic material. The orthographic projection of the second structure on the plane of the light-emitting device layer at least partially overlaps with the spacer portion. The orthographic projection of the first openings on the plane of the light-emitting device layer at least partially overlaps with the light-emitting unit. The second structure is located between the light-shielding structure and the encapsulation layer.

7. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 5.

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