Display panel, preparation method thereof and display device

Abstract

Embodiments of the present application provide a display panel, a preparation method thereof and a display device. The display panel comprises a substrate, a light emitting device layer and a color film layer. The light emitting device layer is located on one side of the substrate and comprises a plurality of light emitting units. The color film layer is located on a side of the light emitting device layer away from the substrate. The display panel comprises a preset pattern area and a display area. The color film layer comprises a first color film layer and a second color film layer. The orthographic projection of the first color film layer on the substrate is located in the display area. The orthographic projection of the second color film layer on the substrate is located in the preset pattern area. The reflection hue of the first color film layer is different from the reflection hue of the second color film layer. The reflection hue of the first color film layer is different from the reflection hue of the second color film layer in the embodiments of the present application, which can realize local patterning at a certain viewing angle in the off-screen state of the display panel and meet the needs of user visual difference experience.

Description

Technical Field

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

[0002] COE (CF On Encapsulation) technology involves forming a color filter layer on a thin-film encapsulated organic electroluminescent device. This structure reduces panel reflectivity, improves color purity, and reduces panel thickness. Replacing polarizers with color filter layers can improve the light extraction efficiency of the display substrate and facilitates the development of thinner and lighter display panels. Summary of the Invention

[0003] This application proposes a display panel and its manufacturing method, as well as a display device, to solve the technical problem that local patterning cannot be achieved in the screen-off state in the prior art.

[0004] To address the aforementioned problems, the embodiments of this application mainly provide the following technical solutions:

[0005] In a first aspect, embodiments of this application provide a display panel, comprising: a substrate; a light-emitting device layer located on one side of the substrate, including a plurality of light-emitting units; and a color filter layer located on the side of the light-emitting device layer away from the substrate; wherein: the display panel includes a preset pattern area and a display area, the color filter layer includes a first color filter layer and a second color filter layer, the orthographic projection of the first color filter layer on the substrate is located in the display area, and the orthographic projection of the second color filter layer on the substrate is located in the preset pattern area; the reflected hue of the first color filter layer is different from the reflected hue of the second color filter layer.

[0006] Optionally, the first color filter layer includes a first black matrix and a plurality of arrayed first color filter units, each of which is corresponding to one of the light-emitting units, and the first black matrix is ​​located between adjacent first color filter units; the second color filter layer includes a second black matrix and a plurality of arrayed second color filter units, each of which is corresponding to one of the light-emitting units, and the second black matrix is ​​located between adjacent second color filter units; the optical density of the first black matrix is ​​different from that of the second black matrix, so that the reflected hue of the first color filter layer is different from that of the second color filter layer.

[0007] Optionally, the first color filter layer includes a first black matrix and a plurality of arrayed first color filter units, each of which is corresponding to one of the light-emitting units. The first black matrix is ​​located between adjacent first color filter units. The second color filter layer includes a plurality of arrayed second color filter units, a second black matrix, and a third black matrix. The second color filter units are corresponding to one of the light-emitting units. The second black matrix is ​​located between adjacent second color filter units. The third black matrix is ​​located on the side of the second black matrix away from the substrate and overlaps with the second black matrix. The optical density of the third black matrix is ​​different from that of the first black matrix, so that the reflected hue of the first color filter layer is different from that of the second color filter layer.

[0008] Optionally, the orthographic projection of the third black matrix onto the substrate covers the orthographic projection of the second black matrix onto the substrate, and the area of ​​the orthographic projection of the third black matrix onto the substrate is greater than the area of ​​the orthographic projection of the second black matrix onto the substrate.

[0009] Optionally, the first color filter layer includes a first black matrix and a plurality of first color filter units, wherein the first color filter units are disposed in a one-to-one correspondence with the light-emitting units, and the orthographic projection of the first black matrix on the substrate is located between adjacent light-emitting units; the second color filter layer includes a second black matrix and a plurality of second color filter units, wherein the second color filter units are disposed in a one-to-one correspondence with the light-emitting units, and the orthographic projection of the second black matrix on the substrate is located between adjacent light-emitting units; at least a portion of the second color filter units overlap with the second black matrix, and the first color filter units do not overlap with the first black matrix, so that the reflected hue of the first color filter layer is different from the reflected hue of the second color filter layer.

[0010] Optionally, the optical density of the first black matrix is ​​the same as the optical density of the second black matrix.

[0011] Optionally, the plurality of second color filter units include a plurality of red filter units, a plurality of green filter units, and a plurality of blue filter units; at least one of the red filter units, the green filter units, and the blue filter units overlaps with the second black matrix.

[0012] Optionally, the display panel further includes: a pixel defining layer located on one side of the substrate, including a dam and an opening, the dam being located between adjacent light-emitting units, the orthographic projection of the light-emitting units on the substrate covering the opening; and an encapsulation layer located between the color filter layer and the light-emitting device layer.

[0013] Secondly, embodiments of this application provide a display device, including: a display panel as described in the first aspect.

[0014] Thirdly, embodiments of this application provide a method for manufacturing a display panel, the display panel including a preset pattern area and a display area, comprising: providing a substrate; forming a light-emitting device layer on one side of the substrate; forming a color filter layer on the side of the light-emitting device layer away from the substrate, the color filter layer including a first color filter layer and a second color filter layer, the orthographic projection of the first color filter layer on the substrate being located in the display area, the orthographic projection of the second color filter layer on the substrate being located in the preset pattern area, and the reflected hue of the first color filter layer being different from the reflected hue of the second color filter layer.

[0015] Optionally, forming a color filter layer on the side of the light-emitting device layer away from the substrate includes: fabricating a first black matrix on the side of the light-emitting device layer away from the substrate using a first patterning process, wherein the orthographic projection of the first black matrix on the substrate is located between adjacent light-emitting units; fabricating a second black matrix on the side of the light-emitting device layer away from the substrate using a second patterning process, wherein the orthographic projection of the second black matrix on the substrate is located between adjacent light-emitting units; and fabricating a first color filter unit and a second color filter unit on the side of the light-emitting device layer away from the substrate using a third patterning process.

[0016] Optionally, forming a color filter layer on the side of the light-emitting device layer away from the substrate includes: fabricating a first black matrix and a second black matrix on the side of the light-emitting device layer away from the substrate using a first patterning process, wherein the orthographic projection of the first black matrix on the substrate is located between adjacent light-emitting units, and the orthographic projection of the second black matrix on the substrate is located between adjacent light-emitting units; fabricating a first color filter unit and a second color filter unit on the side of the light-emitting device layer away from the substrate using a second patterning process; and fabricating a third black matrix on the side of the second black matrix away from the substrate using a third patterning process, wherein the orthographic projection of the second black matrix on the substrate overlaps with the orthographic projection of the third black matrix on the substrate.

[0017] Optionally, forming a color filter layer on the side of the light-emitting device layer away from the substrate includes: fabricating a first black matrix and a second black matrix on the side of the light-emitting device layer away from the substrate using a first patterning process, wherein the orthographic projection of the first black matrix on the substrate is located between adjacent light-emitting units, and the orthographic projection of the second black matrix on the substrate is located between adjacent light-emitting units; fabricating a first color filter unit and a first sub-color filter unit on the side of the light-emitting device layer away from the substrate using a second patterning process; and fabricating a second sub-color filter unit using a third patterning process, wherein the second sub-color filter unit covers a portion of the first sub-color filter unit and a portion of the second black matrix, and the second sub-color filter unit and the first sub-color filter unit form a second color filter unit.

[0018] Optionally, forming a color filter layer on the side of the light-emitting device layer away from the substrate includes: fabricating a first black matrix and a second black matrix on the side of the light-emitting device layer away from the substrate using a first patterning process, wherein the orthographic projection of the first black matrix on the substrate is located between adjacent light-emitting units, and the orthographic projection of the second black matrix on the substrate is located between adjacent light-emitting units; and fabricating a first color filter unit and a second color filter unit on the side of the light-emitting device layer away from the substrate using a second patterning process.

[0019] The beneficial technical effects of the technical solutions provided in this application include:

[0020] The display panel provided in this application embodiment employs a different color filter layer structure in the preset pattern area compared to the display area, resulting in a difference in the reflected hue of the first color filter layer in the display area and the reflected hue of the second color filter layer in the preset pattern area. When the display panel is off, this difference in reflected hue makes the preset pattern more noticeable at certain viewing angles, providing users with a visually distinct experience. Furthermore, the preset pattern can be controlled at the pixel level, further satisfying users' customization needs for the preset pattern.

[0021] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of the embodiments of this application are described below. Attached Figure Description

[0022] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of alternative embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0023] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application;

[0024] Figure 2 This is a schematic diagram of another display panel structure provided in an embodiment of this application;

[0025] Figure 3 A schematic diagram illustrating the fabrication process of a display panel, provided in an embodiment of this application;

[0026] Figure 4 This is a schematic diagram of another display panel provided in an embodiment of this application;

[0027] Figure 5 This is a schematic diagram of the structure of another display panel provided in an embodiment of this application;

[0028] Figure 6 This is a schematic flowchart of a display panel manufacturing method provided in an embodiment of this application.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1-Substrate; 2-Light-emitting device layer; 3-Color filter layer; 4-Pixel limiting layer; 5-Encapsulation layer;

[0031] 21-Light-emitting unit;

[0032] 31-First color filter layer; 32-Second color filter layer; 311-First black matrix; 312-First color filter unit; 321-Second black matrix; 322-Second color filter unit; 323-Third black matrix. Detailed Implementation

[0033] This application is described in detail below. Examples of embodiments of this application are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. Furthermore, detailed descriptions of known technologies that are unnecessary for the features of this application are omitted. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0034] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0035] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this application means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connections or wireless coupling. The term “and / or” as used herein includes all or any units and all combinations of one or more associated listed items.

[0036] Personalized always-on display technology is a hot research topic. How to enable the display panel to display specific patterns when the screen is off (such as setting a logo pattern on the screen) and meet the personalized customization needs of users are technical problems that urgently need to be solved.

[0037] In view of the above-mentioned problems existing in the current related technologies, the present application provides a display panel to solve the technical problem that the existing technology cannot achieve local patterning in the screen-off state.

[0038] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0039] First, let's introduce and explain several terms used in this application:

[0040] Reflected hue: The color that the human eye can perceive when it receives reflected light, usually expressed using the Lab space;

[0041] Optical density (OD): the ratio of incident light intensity to emitted light intensity, calculated using the following formula:

[0042]

[0043] I in ---Incident light intensity;

[0044] I out ---Outgoing light intensity.

[0045] This application provides a display panel, such as... Figure 1 As shown, the display panel includes: a substrate 1, a light-emitting device layer 2, and a color filter layer 3; the substrate 1 includes a substrate and a driving circuit layer (not shown in the figure); the light-emitting device layer 2 is located on one side of the substrate 1 and includes multiple light-emitting units 21; the color filter layer 3 is located on the side of the light-emitting device layer 2 away from the substrate 1; wherein: the display panel includes a preset pattern area and a display area, the color filter layer 3 includes a first color filter layer 31 and a second color filter layer 32, the orthographic projection of the first color filter layer 31 on the substrate 1 is located in the display area, and the orthographic projection of the second color filter layer 32 on the substrate 1 is located in the preset pattern area; the reflected hue of the first color filter layer 31 is different from the reflected hue of the second color filter layer 32.

[0046] It should be noted that the preset pattern area can be, for example, an area on the screen where a logo is set, or an area on the screen where specific text is set. This preset pattern needs to be visible to the user from a certain viewing angle when the screen is off, in order to meet the user's customization needs for the preset pattern. Additionally, Figure 1 The display area is set up in the same way as the normal display area, which is the same as the existing technology, and will not be described in detail here.

[0047] The display panel provided in this application embodiment employs a different color filter layer structure in the preset pattern area compared to the display area, resulting in a difference in the reflected hue of the first color filter layer in the display area and the reflected hue of the second color filter layer in the preset pattern area. When the display panel is off, this difference in reflected hue makes the preset pattern more noticeable at certain viewing angles, providing users with a visually distinct experience. Furthermore, the preset pattern can be controlled at the pixel level, further satisfying users' customization needs for the preset pattern.

[0048] In some specific embodiments, the light-emitting unit 21 includes a red light-emitting unit, a green light-emitting unit, and a blue light-emitting unit. It is understood that the light-emitting unit 21 may also include light-emitting units of other colors, such as a yellow light-emitting unit.

[0049] In one specific embodiment, such as Figure 1As shown, the first color filter layer 31 includes a first black matrix 311 and a plurality of arrayed first color filter units 312. Each first color filter unit 312 corresponds to one of the light-emitting units 21, and the first black matrix 311 is located between adjacent first color filter units 312. The second color filter layer 32 includes a second black matrix 321 and a plurality of arrayed second color filter units 322. Each second color filter unit 322 corresponds to one of the light-emitting units 21, and the second black matrix 321 is located between adjacent second color filter units 322. The optical density (OD) of the first black matrix 311 is different from that of the second black matrix 321, so that the reflected hue of the first color filter layer 31 is different from that of the second color filter layer 32, thereby making the preset pattern in the display panel pattern area more clearly visible at a certain viewing angle when the screen is off. For example, when the OD value of the first black matrix 311 is greater than the OD value of the second black matrix 321, since the OD values ​​of the first black matrix 311 and the second black matrix 321 are different, the OD value of the first black matrix 311 is usually 2.5, and the OD value of the second black matrix 321 is 0.2-2.5. Therefore, the blackness of the first color filter layer 31 is greater than the blackness of the second color filter layer 32, which makes the reflected hue of the first color filter layer 31 different from that of the second color filter layer 32. It is understandable that by using different materials to prepare the first black matrix 311 and the second black matrix 321, preset patterns of different hues can be formed. When the difference in OD values ​​between the materials of the first black matrix 311 and the second black matrix 321 is large, and the difference in the reflected hue between the first color filter layer 31 and the second color filter layer 32 is large, the preset pattern is obvious; when the difference in OD values ​​between the materials of the first black matrix 311 and the second black matrix 321 is small, and the difference in the reflected hue between the first color filter layer 31 and the second color filter layer 32 is small, the preset pattern is not obvious. In a specific embodiment, such as... Figure 2As shown, the first color filter layer 31 includes a first black matrix 311 and a plurality of arrayed first color filter units 312. The first color filter units 312 are arranged in a one-to-one correspondence with the light-emitting units 21. The first black matrix 311 is located between adjacent first color filter units 312. The second color filter layer 32 includes a plurality of arrayed second color filter units 322, a second black matrix 321, and a third black matrix 323. The second color filter units 322 are arranged in a one-to-one correspondence with the light-emitting units 21. The second black matrix 321 is located between adjacent second color filter units 322. The third black matrix 323 is located on the side of the second black matrix 321 away from the substrate 1 and overlaps with the second black matrix 321. The optical density of the third black matrix 323 is different from that of the first black matrix 311. The OD values ​​of the first black matrix 311 and the second black matrix 321 are usually 2.5, while the OD value of the third black matrix 323 is 0.2-2.5, so that the reflected hue of the first color filter layer 31 is different from that of the second color filter layer 32.

[0050] In some specific embodiments, the orthographic projection of the third black matrix 323 on the substrate 1 covers the orthographic projection of the second black matrix 321 on the substrate 1, and the area of ​​the orthographic projection of the third black matrix 323 on the substrate 1 is greater than the area of ​​the orthographic projection of the second black matrix 321 on the substrate 1.

[0051] In some specific embodiments, such as Figure 4 and Figure 5 As shown, the first color filter layer 31 includes a first black matrix 311 and a plurality of first color filter units 312. The first color filter units 312 are arranged in a one-to-one correspondence with the light-emitting units 21. The orthographic projection of the first black matrix 311 onto the substrate 1 is located between adjacent light-emitting units 21. The second color filter layer 32 includes a second black matrix 321 and a plurality of second color filter units 322. The second color filter units 322 are arranged in a one-to-one correspondence with the light-emitting units 21. The orthographic projection of the second black matrix 321 onto the substrate 1 is located between adjacent light-emitting units 21. At least some of the second color filter units 322 overlap with the second black matrix 321, and the first color filter units 312 do not overlap with the first black matrix 311, so that the reflected hue of the first color filter layer 31 is different from the reflected hue of the second color filter layer 32. In one specific embodiment, as... Figure 4 As shown, the second color filter unit 322 covers the adjacent second black matrix 321 on both the left and right sides. The optical density of the first black matrix 311 is the same as that of the second black matrix 321.

[0052] In some specific embodiments, the plurality of second color filter units 322 include a plurality of red filter units, a plurality of green filter units, and a plurality of blue filter units. At least one of the red filter units, green filter units, and blue filter units 322 overlaps with the second black matrix 321. In one specific embodiment, as shown... Figure 4 As shown, the plurality of second color filter units 322 include a plurality of blue filter units, which cover their adjacent second black matrix 322, such that the reflected hue of the first color filter layer 31 is different from the reflected hue of the second color filter layer 32. In another specific embodiment, as Figure 5 As shown, the plurality of second color filter units 322 include a plurality of green filter units, each green filter unit covering its adjacent second black matrix 322, such that the reflected hue of the first color filter layer 31 is different from the reflected hue of the second color filter layer 32. In another specific embodiment, the plurality of second color filter units 322 include a plurality of green filter units and a plurality of blue filter units, both green and blue filter units covering their adjacent second black matrix 322, such that the reflected hue of the first color filter layer 31 is different from the reflected hue of the second color filter layer 32. It can be understood that by selecting filter units of different colors to cover adjacent second black matrices 322, preset patterns with different color tendencies can be formed.

[0053] In some specific embodiments, such as Figure 1 As shown, the display panel further includes a pixel defining layer 4 and an encapsulation layer 5. The pixel defining layer 4 is located on one side of the substrate 1, disposed on the same layer as the light-emitting device layer 2, and includes a dam and an opening. The dam is located between adjacent light-emitting units 21, and the orthographic projection of the light-emitting unit 21 onto the substrate 1 covers the opening. The encapsulation layer 5 is located between the color filter layer 1 and the light-emitting device layer 2, and is used to encapsulate the light-emitting unit 21. In this embodiment, the arrangement of the pixel defining layer 4 and the encapsulation layer 5 is similar to that of the prior art, and will not be described in detail here.

[0054] Based on the same inventive concept, this application provides a display device including the aforementioned display panel. Since the display device includes the aforementioned display panel, it possesses the same beneficial technical effects as the aforementioned display panel. Therefore, the beneficial effects of the display device will not be repeated here.

[0055] Based on the same inventive concept, embodiments of this application provide a method for manufacturing a display panel, the display panel including a preset pattern area and a display area, such as... Figure 6 As shown, the preparation method includes:

[0056] S101, Provide a substrate;

[0057] S102, A light-emitting device layer is formed on one side of the substrate;

[0058] S103. A color filter layer is formed on the side of the light-emitting device layer away from the substrate. The color filter layer includes a first color filter layer and a second color filter layer. The orthographic projection of the first color filter layer on the substrate is located in the display area, and the orthographic projection of the second color filter layer on the substrate is located in the preset pattern area. The reflected hue of the first color filter layer is different from that of the second color filter layer.

[0059] After forming the light-emitting device layer 2 on one side of the substrate 1 and before forming the color filter layer 3 on the side of the light-emitting device layer 2 away from the substrate 1, this application embodiment further includes: forming an encapsulation layer 5 on the side of the light-emitting device layer 2 away from the substrate 1.

[0060] In one specific embodiment, such as Figure 1 As shown, a color filter layer 3 is formed on the side of the light-emitting device layer 2 away from the substrate 1, including: fabricating a first black matrix 311 on the side of the light-emitting device layer 2 away from the substrate 1 through a first patterning process, wherein the orthographic projection of the first black matrix 311 on the substrate 1 is located between adjacent light-emitting units 21; fabricating a second black matrix 321 on the side of the light-emitting device layer 2 away from the substrate 1 through a second patterning process, wherein the orthographic projection of the second black matrix 321 on the substrate 1 is located between adjacent light-emitting units 21; and fabricating a first color filter unit 312 and a second color filter unit 322 on the side of the light-emitting device layer 2 away from the substrate 1 through a third patterning process. Wherein, the first black matrix 311 and the first color filter unit 312 form the first color filter layer 31, and the second black matrix 321 and the second color filter unit 322 form the second color filter layer 32.

[0061] Specifically, in this manufacturing method, the first black matrix 311 and the second black matrix 321 are formed by two different patterning processes. The materials of the first black matrix 311 and the second black matrix 321 are different, and the optical density of the first black matrix 311 is different from that of the second black matrix 321.

[0062] In another specific embodiment, such as Figure 2As shown, a color filter layer 3 is formed on the side of the light-emitting device layer 2 away from the substrate 1, including: fabricating a first black matrix 311 and a second black matrix 321 on the side of the light-emitting device layer 2 away from the substrate 1 through a first patterning process, wherein the orthographic projection of the first black matrix 311 on the substrate 1 is located between adjacent light-emitting units 21, and the orthographic projection of the second black matrix 321 on the substrate 1 is located between adjacent light-emitting units 21; fabricating a first color filter unit 312 and a second color filter unit 322 on the side of the light-emitting device layer 2 away from the substrate 1 through a second patterning process; and fabricating a third black matrix 323 on the side of the second black matrix 321 away from the substrate 1 through a third patterning process, wherein the orthographic projections of the second black matrix 321 and the third black matrix 323 on the substrate 1 overlap. Wherein, the first black matrix 311 and the first color filter unit 312 form the first color filter layer 313, and the second black matrix 321, the second color filter unit 322, and the third black matrix 323 form the second color filter layer 32.

[0063] Specifically, in this manufacturing method, the first black matrix 311 and the second black matrix 321 are formed using the same patterning process, and the first black matrix 311 and the second black matrix 321 are made of the same material. In this manufacturing method, an additional patterning process is added to form a third black matrix 323 that is stacked with the second black matrix 321. The material of the third black matrix 323 is different from that of the second black matrix 321.

[0064] In some specific embodiments, a color filter layer 3 is formed on the side of the light-emitting device layer 2 away from the substrate 1, including: fabricating a first black matrix 311 and a second black matrix 321 on the side of the light-emitting device layer 2 away from the substrate 1 through a first patterning process. The orthographic projection of the first black matrix 311 onto the substrate 1 is located between adjacent light-emitting units 21, and the orthographic projection of the second black matrix 321 onto the substrate 1 is located between adjacent light-emitting units 21. In one specific embodiment, such as Figure 3 As shown, a first color filter unit 312 and a first sub-color filter unit are fabricated on the side of the light-emitting device layer 2 away from the substrate 1 through a second patterning process. Figure 4As shown, a second sub-color filter unit is fabricated on the side of the first sub-color filter unit away from the substrate 1 through a third patterning process. The second sub-color filter unit covers a portion of the first sub-color filter unit and a portion of the second black matrix 321. The second sub-color filter unit and the first sub-color filter unit form the second color filter unit 322. For example, the second sub-color filter unit covers the blue filter unit and the second black matrix 321 adjacent to the blue filter unit, so that the reflected hue of the first color filter layer 31 is different from the reflected hue of the second color filter layer 32. Wherein, the first black matrix 311 and the first color filter unit 312 form the first color filter layer 31, and the second black matrix 321 and the second color filter unit 322 form the second color filter layer 32.

[0065] Specifically, in this manufacturing method, the second color filter unit 322 can be formed using two different manufacturing processes. The first color filter unit 312 and the first sub-color filter unit are formed through a single patterning process, and then the second sub-color filter unit is formed through another single patterning process. The second sub-color filter unit and the first sub-color filter unit together form the second color filter unit 322.

[0066] In yet another specific embodiment, such as Figure 5 As shown, a color filter layer 3 is formed on the side of the light-emitting device layer 2 away from the substrate 1. This includes: fabricating a first black matrix 311 and a second black matrix 321 on the side of the light-emitting device layer 2 away from the substrate 1 using a first patterning process. The orthographic projection of the first black matrix 311 onto the substrate 1 is located between adjacent light-emitting units 21, and the orthographic projection of the second black matrix 321 onto the substrate 1 is also located between adjacent light-emitting units 21. A first color filter unit 312 and a second color filter unit 322 are fabricated on the side of the light-emitting device layer 2 away from the substrate 1 using a second patterning process. At least a portion of the second color filter unit 322 overlaps with the second black matrix 321, while the first color filter unit 312 does not overlap with the first black matrix 311, so that the reflected hue of the first color filter layer 31 is different from the reflected hue of the second color filter layer 32.

[0067] Specifically, in this manufacturing method, the second color filter unit 322 can be formed by a single patterning process. Unlike the first color filter unit 312, the second color filter unit 322 needs to overlap with the second black matrix 321 at least in part.

[0068] By applying the embodiments of this application, at least the following beneficial effects can be achieved:

[0069] The display panel provided in this application embodiment employs a different color filter layer structure in the preset pattern area compared to the display area, resulting in a difference in the reflected hue of the first color filter layer in the display area and the reflected hue of the second color filter layer in the preset pattern area. When the display panel is off, this difference in reflected hue makes the preset pattern more noticeable at certain viewing angles, providing users with a visually distinct experience. Furthermore, the preset pattern can be controlled at the pixel level, further satisfying users' customization needs for the preset pattern.

[0070] Those skilled in the art will understand that the steps, measures, and solutions in the various operations, methods, and processes discussed in this application can be alternated, modified, combined, or deleted. Furthermore, other steps, measures, and solutions in the various operations, methods, and processes discussed in this application can also be alternated, modified, rearranged, decomposed, combined, or deleted. Furthermore, steps, measures, and solutions in the prior art that are similar to those disclosed in this application can also be alternated, modified, rearranged, decomposed, combined, or deleted.

[0071] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0072] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0073] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0074] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0075] It should be understood that although the steps in the flowcharts of the accompanying figures are shown sequentially as indicated by the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the accompanying figures may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the sub-steps or stages of other steps.

[0076] The above are only some embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A display panel, characterized in that, include: Base; A light-emitting device layer, located on one side of the substrate, includes multiple light-emitting units; A color filter layer is located on the side of the light-emitting device layer away from the substrate; Wherein: the display panel includes a preset pattern area and a display area, the color filter layer includes a first color filter layer and a second color filter layer, the orthographic projection of the first color filter layer on the substrate is located in the display area, and the orthographic projection of the second color filter layer on the substrate is located in the preset pattern area; When the display panel is in the off state, the reflected hue of the first color filter layer is different from that of the second color filter layer; The first color filter layer includes a first black matrix and a plurality of first color filter units arranged in an array. The first color filter units are arranged in a one-to-one correspondence with the light-emitting units, and the first black matrix is ​​located between adjacent first color filter units. The second color filter layer includes a plurality of second color filter units arranged in an array, as well as a second black matrix and a third black matrix. The second color filter units are arranged in a one-to-one correspondence with the light-emitting units. The second black matrix is ​​located between adjacent second color filter units. The third black matrix is ​​located on the side of the second black matrix away from the substrate and overlaps with the second black matrix. The optical density of the third black matrix is ​​different from that of the first black matrix, so that the reflected hue of the first color filter layer is different from that of the second color filter layer.

2. The display panel according to claim 1, characterized in that, The first color filter layer includes a first black matrix and a plurality of first color filter units arranged in an array. The first color filter units are arranged in a one-to-one correspondence with the light-emitting units, and the first black matrix is ​​located between adjacent first color filter units. The second color filter layer includes a second black matrix and a plurality of arrayed second color filter units, wherein the second color filter units are arranged in a one-to-one correspondence with the light-emitting units, and the second black matrix is ​​located between adjacent second color filter units; The optical density of the first black matrix is ​​different from that of the second black matrix, so that the reflected hue of the first color filter layer is different from that of the second color filter layer.

3. The display panel according to claim 1, characterized in that, The orthographic projection of the third black matrix onto the substrate covers the orthographic projection of the second black matrix onto the substrate, and the area of ​​the orthographic projection of the third black matrix onto the substrate is greater than or equal to the area of ​​the orthographic projection of the second black matrix onto the substrate.

4. The display panel according to claim 1, characterized in that, The first color filter layer includes a first black matrix and a plurality of first color filter units, wherein the first color filter units are arranged in a one-to-one correspondence with the light-emitting units, and the orthographic projection of the first black matrix on the substrate is located between adjacent light-emitting units; The second color filter layer includes a second black matrix and a plurality of second color filter units, wherein the second color filter units are arranged in a one-to-one correspondence with the light-emitting units, and the orthographic projection of the second black matrix on the substrate is located between adjacent light-emitting units; At least a portion of the second color filter unit overlaps with the second black matrix, while the first color filter unit does not overlap with the first black matrix, so that the reflected hue of the first color filter layer is different from the reflected hue of the second color filter layer.

5. The display panel according to claim 4, characterized in that, The optical density of the first black matrix is ​​the same as that of the second black matrix.

6. The display panel according to claim 4, characterized in that, The plurality of second color filter units include a plurality of red filter units, a plurality of green filter units, and a plurality of blue filter units; At least one of the red filter unit, the green filter unit, and the blue filter unit overlaps with the second black matrix.

7. The display panel according to claim 1, characterized in that, Also includes: A pixel-defining layer, located on one side of the substrate, includes a dam and an opening, the dam being located between adjacent light-emitting units, and the orthographic projection of the light-emitting units onto the substrate covering the opening; An encapsulation layer is located between the color filter layer and the light-emitting device layer.

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

9. A method for manufacturing a display panel, applied to the display panel as described in any one of claims 1 to 7, wherein the display panel includes a preset pattern area and a display area, characterized in that, include: Provide a base; A light-emitting device layer is formed on one side of the substrate; A color filter layer is formed on the side of the light-emitting device layer away from the substrate. The color filter layer includes a first color filter layer and a second color filter layer. The orthographic projection of the first color filter layer on the substrate is located in the display area, and the orthographic projection of the second color filter layer on the substrate is located in the preset pattern area. The reflected hue of the first color filter layer is different from that of the second color filter layer.

10. The method for manufacturing a display panel according to claim 9, characterized in that, The formation of a color filter layer on the side of the light-emitting device layer away from the substrate includes: A first black matrix is ​​fabricated on the side of the light-emitting device layer away from the substrate using a first patterning process. The orthographic projection of the first black matrix onto the substrate is located between adjacent light-emitting units. A second black matrix is ​​fabricated on the side of the light-emitting device layer away from the substrate using a second patterning process. The orthographic projection of the second black matrix onto the substrate is located between adjacent light-emitting units. The first color filter unit and the second color filter unit are fabricated on the side of the light-emitting device layer away from the substrate using a third patterning process.

11. The method for manufacturing a display panel according to claim 9, characterized in that, The formation of a color filter layer on the side of the light-emitting device layer away from the substrate includes: A first black matrix and a second black matrix are fabricated on the side of the light-emitting device layer away from the substrate using a first patterning process. The orthographic projection of the first black matrix onto the substrate is located between adjacent light-emitting units, and the orthographic projection of the second black matrix onto the substrate is located between adjacent light-emitting units. The first color filter unit and the second color filter unit are fabricated on the side of the light-emitting device layer away from the substrate by a second patterning process; A third black matrix is ​​created on the side of the second black matrix away from the substrate using a third mapping process, and the orthographic projection of the second black matrix on the substrate overlaps with the orthographic projection of the third black matrix on the substrate.

12. The method for manufacturing a display panel according to claim 9, characterized in that, The formation of a color filter layer on the side of the light-emitting device layer away from the substrate includes: A first black matrix and a second black matrix are fabricated on the side of the light-emitting device layer away from the substrate using a first patterning process. The orthographic projection of the first black matrix onto the substrate is located between adjacent light-emitting units, and the orthographic projection of the second black matrix onto the substrate is located between adjacent light-emitting units. A first color filter unit and a first sub-color filter unit are fabricated on the side of the light-emitting device layer away from the substrate using a second patterning process. The second sub-color filter unit is fabricated through a third patterning process. The second sub-color filter unit covers a portion of the first sub-color filter unit and a portion of the second black matrix. The second sub-color filter unit and the first sub-color filter unit form the second color filter unit.

13. The method for manufacturing a display panel according to claim 9, characterized in that, The formation of a color filter layer on the side of the light-emitting device layer away from the substrate includes: A first black matrix and a second black matrix are fabricated on the side of the light-emitting device layer away from the substrate using a first patterning process. The orthographic projection of the first black matrix onto the substrate is located between adjacent light-emitting units, and the orthographic projection of the second black matrix onto the substrate is located between adjacent light-emitting units. A first color filter unit and a second color filter unit are fabricated on the side of the light-emitting device layer away from the substrate using a second patterning process.

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