CN115942835A - Display panel, preparation method thereof and display device - Google Patents

Abstract

The embodiment of the application provides a display panel, a preparation method of the display panel and a display device. The display panel includes: the light-emitting device comprises a substrate, a light-emitting device layer and a color film layer; the light emitting device layer is positioned on one side of the substrate and comprises a plurality of light emitting units; the color film layer is positioned on one side of the light-emitting device layer far away from the substrate; wherein: 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 positioned in the display area, and the orthographic projection of the second color film layer on the substrate is positioned in the preset pattern area; the reflective color phase of the first color film layer is different from the reflective color phase 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, so that the local patterning of a certain visual angle of the display panel in a screen extinguishing state can be realized, and the requirement of user visual difference experience is met.

Description

Display panel, preparation method thereof and display device

Technical Field

The application relates to the technical field of display, in particular to a display panel, a preparation method of the display panel and a display device.

Background

The COE (CF On Encapsulation) technology is to form a color film layer On a thin film packaged organic electroluminescent device, and the structure has the effects of reducing the reflectivity of a panel, improving the color purity of the panel, reducing the thickness of the panel and the like. The color film layer is used to replace the polarizer, so that the light extraction rate of the display substrate can be improved, and the display panel is favorable for developing towards the direction of lightness and thinness.

Disclosure of Invention

The application provides a display panel, a preparation method thereof and a display device, which are used for solving the technical problem that local patterning cannot be realized in a screen quenching state in the prior art.

In order to solve the above problem, the embodiments of the present application mainly provide the following technical solutions:

in a first aspect, an embodiment of the present application provides a display panel, including: a substrate; a light emitting device layer on one side of the substrate, including a plurality of light emitting cells; the color film layer is positioned on one side of the light-emitting device layer, which is far away from the substrate; wherein: 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 positioned in the display area, and the orthographic projection of the second color film layer on the substrate is positioned in the preset pattern area; the reflective hue of the first color film layer is different from the reflective hue of the second color film layer.

Optionally, the first color film 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 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 film layer comprises a second black matrix and a plurality of second color filter units arranged in an array, the second color filter units are arranged in one-to-one correspondence with the light emitting units, and the second black matrix is positioned between the adjacent second color filter units; the optical density of the first black matrix is different from the optical density of the second black matrix, so that the reflected color phase of the first color film layer is different from the reflected color phase of the second color film layer.

Optionally, the first color film 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 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 film layer comprises a plurality of second color filter units arranged in an array, a second black matrix and a third black matrix, the second color filter units are arranged in one-to-one correspondence with the light emitting units, the second black matrix is positioned between the adjacent second color filter units, and the third black matrix is positioned on one side of the second black matrix, which is far away from the substrate, and is overlapped 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 reflective color phase of the first color film layer is different from that of the second color film layer.

Optionally, an orthographic projection of the third black matrix on the substrate covers an orthographic projection of the second black matrix on the substrate, and an area of the orthographic projection of the third black matrix on the substrate is larger than an area of the orthographic projection of the second black matrix on the substrate.

Optionally, the first color film layer includes a first black matrix and a plurality of first color filter units, the first color filter units are disposed in one-to-one correspondence with the light emitting units, and an orthographic projection of the first black matrix on the substrate is located between the adjacent light emitting units; the second color film layer comprises a second black matrix and a plurality of second color filter units, the second color filter units are arranged in one-to-one correspondence with the light-emitting units, and the orthographic projection of the second black matrix on the substrate is positioned between the adjacent light-emitting units; at least part of the second color filter unit is overlapped with the second black matrix, and the first color filter unit is not overlapped with the first black matrix, so that the reflection color phase of the first color film layer is different from the reflection color phase of the second color film layer.

Optionally, an optical density of the first black matrix is the same as an optical density of the second black matrix.

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 second color filter unit of the red filter unit, the green filter unit and the blue filter unit is overlapped with the second black matrix.

Optionally, the display panel further comprises: a pixel defining layer on one side of the substrate, including a bank and an opening, the bank being located between adjacent ones of the light emitting units, an orthographic projection of the light emitting units on the substrate covering the opening; and the packaging layer is positioned between the color film layer and the light-emitting device layer.

In a second aspect, an embodiment of the present application provides a display device, including: such as the display panel of the first aspect.

In a third aspect, an embodiment of the present application provides a method for manufacturing a display panel, where the display panel includes a preset pattern area and a display area, and the method includes: providing a substrate; forming a light emitting device layer on one side of the substrate; and forming a color film layer on one side of the light-emitting device layer, which is far away from the substrate, wherein 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 positioned in the display area, the orthographic projection of the second color film layer on the substrate is positioned in the preset pattern area, and the reflection color phase of the first color film layer is different from the reflection color phase of the second color film layer.

Optionally, forming a color film layer on a side of the light emitting device layer away from the substrate includes: manufacturing a first black matrix on one side, far away from the substrate, of the light-emitting device layer through a first composition process, wherein the orthographic projection of the first black matrix on the substrate is located between the adjacent light-emitting units; manufacturing a second black matrix on one side, far away from the substrate, of the light-emitting device layer through a second composition process, wherein the orthographic projection of the second black matrix on the substrate is located between the adjacent light-emitting units; and manufacturing a first color filter unit and a second color filter unit on one side of the light-emitting device layer far away from the substrate through a third composition process.

Optionally, the forming a color film layer on a side of the light emitting device layer away from the substrate includes: manufacturing a first black matrix and a second black matrix on one side, far away from the substrate, of the light-emitting device layer through a first composition process, wherein the orthographic projection of the first black matrix on the substrate is located between the adjacent light-emitting units, and the orthographic projection of the second black matrix on the substrate is located between the adjacent light-emitting units; manufacturing a first color filter unit and a second color filter unit on one side of the light-emitting device layer far away from the substrate through a second composition process; and manufacturing a third black matrix on one side of the second black matrix far away from the substrate through a third composition process, wherein the orthographic projection of the second black matrix on the substrate is overlapped with the orthographic projection of the third black matrix on the substrate.

Optionally, the forming a color film layer on a side of the light emitting device layer away from the substrate includes: manufacturing a first black matrix and a second black matrix on one side, far away from the substrate, of the light-emitting device layer through a first-time composition process, wherein the orthographic projection of the first black matrix on the substrate is located between the adjacent light-emitting units, and the orthographic projection of the second black matrix on the substrate is located between the adjacent light-emitting units; manufacturing a first color filter unit and a first sub color filter unit on one side, far away from the substrate, of the light-emitting device layer through a second composition process; and manufacturing a second sub-color filter unit through a third composition process, wherein the second sub-color filter unit covers a part of the first sub-color filter unit and covers a part 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.

Optionally, the forming a color film layer on a side of the light emitting device layer away from the substrate includes: manufacturing a first black matrix and a second black matrix on one side, far away from the substrate, of the light-emitting device layer through a first-time composition process, wherein the orthographic projection of the first black matrix on the substrate is located between the adjacent light-emitting units, and the orthographic projection of the second black matrix on the substrate is located between the adjacent light-emitting units; and manufacturing a first color filter unit and a second color filter unit on one side of the light-emitting device layer far away from the substrate through a second composition process.

The technical scheme provided by the embodiment of the application brings beneficial technical effects that:

the display panel provided by the embodiment of the application adopts the color film layer structure different from the display area through the preset pattern area of the display panel, so that the reflection hue of the first color film layer in the display area of the display panel is different from the reflection hue of the second color film layer in the preset pattern area. When the display panel is in a screen-off state, due to the difference of the reflection hue, the preset pattern is obvious at a certain visual angle, and certain visual difference experience is brought to a user. In addition, the preset pattern can realize pixel level control, and can further meet the customization requirement of a user on the preset pattern.

The foregoing description is only an overview of the technical solutions of the embodiments of the present application, and in order that the technical means of the embodiments of the present application can be clearly understood, the embodiments of the present application are implemented in accordance with the content of the description, and in order that the foregoing and other objects, features, and advantages of the embodiments of the present application can be more clearly understood, the detailed description of the embodiments of the present application is provided below.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the alternative embodiments. The drawings are only for purposes of illustrating alternative embodiments and are not to be construed as limiting the embodiments of the present application. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of another display panel provided in the embodiment of the present application;

fig. 3 is a schematic structural diagram of a process for manufacturing a display panel according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of another display panel according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of another display panel provided in the embodiment of the present application;

fig. 6 is a schematic flow chart of a method for manufacturing a display panel according to an embodiment of the present disclosure.

Description of reference numerals:

1-a substrate; 2-a light emitting device layer; 3-a color film layer; 4-a pixel defining layer; 5-packaging layer;

21-a light-emitting unit;

31-a first color film layer; 32-a second color film layer; 311-a first black matrix; 312-a first color filter unit; 321-a second black matrix; 322-a second color filter unit; 323-third black matrix.

Detailed Description

The present application is described in detail below and examples of embodiments of the present application are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements with the same or similar functionality throughout. In addition, if a detailed description of the known art is not necessary for illustrating the features of the present application, it is omitted. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

It will be understood by those within the art that, unless otherwise defined, all terms (including 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. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.

The personalized screen-off display technology is a current popular research subject, and how to realize that a display panel displays a specific pattern (for example, a Logo pattern is arranged on a screen) in a screen-off manner and meet the personalized customization requirements of users is a technical problem to be solved urgently at present.

To solve the above problems in the related art at present, an embodiment of the present application provides a display panel to solve the technical problem in the prior art that a local patterning cannot be achieved in a screen-off state.

To make the objects, technical solutions and advantages of the present application more clear, the following detailed description of the embodiments of the present application will be made with reference to the accompanying drawings.

The terms referred to in this application will first be introduced and explained:

reflected hue: the color that the human eye can express when receiving the reflected light is usually expressed by adopting a lab space;

optical Density (OD): the calculation formula of the ratio of the incident light intensity to the emergent light intensity is as follows:

I _in -the intensity of the incident light;

I _out -the intensity of the emitted light.

An embodiment of the present application provides a display panel, as shown in fig. 1, the display panel includes: the light emitting device comprises a substrate 1, a light emitting device layer 2 and a color film layer 3; the base 1 includes a base substrate and a driving circuit layer (not shown in the figure); the light emitting device layer 2 is positioned at one side of the substrate 1 and includes a plurality of light emitting cells 21; the color film layer 3 is positioned on one side of the light-emitting device layer 2 far away from the substrate 1; wherein: the display panel comprises a preset pattern area and a display area, the color film layer 3 comprises a first color film layer 31 and a second color film layer 32, the orthographic projection of the first color film layer 31 on the substrate 1 is positioned in the display area, and the orthographic projection of the second color film layer 32 on the substrate 1 is positioned in the preset pattern area; the reflective color phase of the first color film 31 is different from the reflective color phase of the second color film 32.

It should be noted that the preset pattern area may be, for example, an area where a Logo pattern is set on a screen, or an area where specific text is set on the screen, and the preset pattern needs to be visible to a user at a certain viewing angle when the screen is turned off, so as to meet a customization requirement of the user on the preset pattern. In addition, the setting mode of the display area in fig. 1 is a normal display area, which is the same as the prior art and is not described herein again.

The display panel provided by the embodiment of the application adopts the color film layer structure different from the display area through the preset pattern area of the display panel, so that the reflection hue of the first color film layer in the display area of the display panel is different from the reflection hue of the second color film layer in the preset pattern area. When the display panel is in a screen-off state, due to the difference of the reflection hue, the preset pattern is obvious at a certain visual angle, and certain visual difference experience is brought to a user. In addition, the preset pattern can realize pixel level control, and can further meet the customization requirement of a user on the preset pattern.

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 will be appreciated that the lighting unit 21 may also comprise lighting units of other colors, for example a yellow lighting unit.

In a specific embodiment, as shown in fig. 1, the first color film layer 31 includes a first black matrix 311 and a plurality of first color filter units 312 arranged in an array, the first color filter units 312 are disposed in one-to-one correspondence with the light emitting units 21, and the first black matrix 311 is located between adjacent first color filter units 312. The second color film layer 32 includes a second black matrix 321 and a plurality of second color filter units 322 arranged in an array, the second color filter units 322 are disposed in one-to-one correspondence with 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 the Optical Density of the second black matrix 321, so that the reflective color phase of the first color film layer 31 is different from the reflective color phase of the second color film layer 32, and the predetermined pattern of the pattern region of the display panel in the off-screen state is more obvious at a certain viewing angle. 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 value of the first black matrix 311 is different from the OD value of the second black matrix 321, the OD value of the first black matrix 311 is usually 2.5, the OD value of the second black matrix 321 is 0.2-2.5, and the blackness of the first color film layer 31 is greater than the blackness of the second color film layer 32, so that the reflective color phase of the first color film layer 31 is different from the reflective color phase of the second color film layer 32. It can be understood that preset patterns with different color phases can be formed by preparing the first black matrix 311 and the second black matrix 321 by using different materials, and the preset patterns are obvious when the difference between the OD values of the materials of the first black matrix 311 and the second black matrix 321 is large, and the difference between the reflective color phase of the first color film layer 31 and the reflective color phase of the second color film layer 32 is large; when the difference between the OD values of the first black matrix 311 and the second black matrix 321 is small, and the difference between the reflective color of the first color film 31 and the reflective color of the second color film 32 is small, the predetermined pattern is not obvious. In a specific embodiment, as shown in fig. 2, the first color film layer 31 includes a first black matrix 311 and a plurality of first color filter units 312 arranged in an array, the first color filter units 312 are disposed in one-to-one correspondence with the light emitting units 21, and the first black matrix 311 is located between adjacent first color filter units 312. The second color film layer 32 includes a plurality of second color filter units 322 arranged in an array, and a second black matrix 321 and a third black matrix 323, the second color filter units 322 are disposed in one-to-one correspondence with the light emitting units 21, the second black matrix 321 is disposed between adjacent second color filter units 322, and the third black matrix 323 is disposed on a side of the second black matrix 321 away from the substrate 1 and overlapped 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 value of the first black matrix 311 and the second black matrix 321 is usually 2.5, and the OD value of the third black matrix 323 is 0.2-2.5, so that the reflective color phase of the first color film layer 31 is different from the reflective color phase of the second color film layer 32.

In some specific embodiments, an orthographic projection of the third black matrix 323 on the substrate 1 covers an orthographic projection of the second black matrix 321 on the substrate 1, and an area of the orthographic projection of the third black matrix 323 on the substrate 1 is larger than an area of the orthographic projection of the second black matrix 321 on the substrate 1.

In some specific embodiments, as shown in fig. 4 and 5, the first color film layer 31 includes a first black matrix 311 and a plurality of first color filter units 312, the first color filter units 312 are disposed in one-to-one correspondence with the light emitting units 21, and an orthographic projection of the first black matrix 311 on the substrate 1 is located between adjacent light emitting units 21. The second color film layer 32 includes a second black matrix 321 and a plurality of second color filter units 322, the second color filter units 322 are disposed corresponding to the light emitting units 21 one by one, and an orthogonal projection of the second black matrix 321 on the substrate 1 is located between adjacent light emitting units 21. At least a portion of the second color filter unit 322 overlaps the second black matrix 321, and the first color filter unit 312 does not overlap the first black matrix 311, so that the reflective color phase of the first color film 31 is different from the reflective color phase of the second color film 32. In one embodiment, as shown in fig. 4, the second color filter unit 322 covers the left and right adjacent second black matrices 321. Wherein: the optical density of the first black matrix 311 is the same as that of the second black matrix 321.

In some specific embodiments, the plurality of second color filter units 322 includes a plurality of red filter units, a plurality of green filter units, and a plurality of blue filter units. At least one second color filter unit 322 of the red, green and blue color filter units overlaps the second black matrix 321. In one embodiment, as shown in fig. 4, the plurality of second color filter units 322 includes a plurality of blue color filter units, and the blue color filter units cover the second black matrixes 322 adjacent thereto, so that the reflective color phase of the first color film layer 31 is different from the reflective color phase of the second color film layer 32. In another embodiment, as shown in fig. 5, the plurality of second color filter units 322 includes a plurality of green filter units, and the green filter units cover the adjacent second black matrixes 322, so that the color phase reflected by the first color film 31 is different from the color phase reflected by the second color film 32. In yet another embodiment, the plurality of second color filter units 322 includes a plurality of green filter units and blue filter units, each of which covers the second black matrix 322 adjacent thereto, so that the reflective color phase of the first color film layer 31 is different from the reflective color phase of the second color film layer 32. It can be understood that preset patterns of different color tendencies can be formed by selecting different color filter units to cover the adjacent second black matrices 322.

In some specific embodiments, as shown in fig. 1, the display panel further includes: a pixel defining layer 4 and an encapsulation layer 5. The pixel defining layer 4 is disposed on one side of the substrate 1 in the same layer as the light emitting device layer 2, and includes a bank and an opening, the bank is disposed between the adjacent light emitting cells 21, and an orthographic projection of the light emitting cells 21 on the substrate 1 covers the opening. The encapsulation layer 5 is located between the color film layer 1 and the light emitting device layer 2, and is used for encapsulating the light emitting unit 21. In the embodiment of the present application, the arrangement manner of the pixel defining layer 4 and the encapsulating layer 5 is similar to that of the prior art, and is not described herein again.

Based on the same inventive concept, the embodiment of the application provides a display device, which comprises the display panel. Because the display device comprises the display panel, the display device has the same beneficial technical effects as the display panel. Therefore, the beneficial effects of the display device will not be repeated herein.

Based on the same inventive concept, embodiments of the present application provide a method for manufacturing a display panel, where the display panel includes a preset pattern area and a display area, as shown in fig. 6, the method includes:

s101, providing a substrate;

s102, forming a light-emitting device layer on one side of a substrate;

s103, forming a color film layer on one side, far away from the substrate, of the light-emitting device layer, wherein 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, and the reflection color phase of the first color film layer is different from the reflection color phase of the second color film layer.

After the light emitting device layer 2 is formed on one side of the substrate 1 and before the color film layer 3 is formed on one side of the light emitting device layer 2 away from the substrate 1, the embodiment of the application further includes: an encapsulation layer 5 is formed on the side of the light emitting device layer 2 remote from the substrate 1.

In one embodiment, as shown in fig. 1, forming a color film layer 3 on a side of the light emitting device layer 2 away from the substrate 1 includes: the first black matrix 311 is manufactured on the side of the light emitting device layer 2 away from the substrate 1 through a first patterning process, and the orthographic projection of the first black matrix 311 on the substrate 1 is located between the adjacent light emitting units 21. And manufacturing a second black matrix 321 on the side of the light-emitting device layer 2 far 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 positioned between the adjacent light-emitting units 21. The first color filter unit 312 and the second color filter unit 322 are fabricated 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 312 form a first color film layer 31, and the second black matrix 321 and the second color filter 322 form a second color film layer 32.

Specifically, in the manufacturing method, the first black matrix 311 and the second black matrix 321 are manufactured and formed by two different patterning processes, the material of the first black matrix 311 is different from that of the second black matrix 321, and the optical density of the first black matrix 311 is different from that of the second black matrix 321.

In another embodiment, as shown in fig. 2, a color film layer 3 is formed on a side of the light emitting device layer 2 away from the substrate 1, and includes: and manufacturing a first black matrix 311 and a second black matrix 321 on the side of the light-emitting device layer 2 far 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 positioned between the adjacent light-emitting units 21, and the orthographic projection of the second black matrix 321 on the substrate 1 is positioned between the adjacent light-emitting units 21. Manufacturing a first color filter unit 312 and a second color filter unit 322 on one side of the light-emitting device layer 2 far away from the substrate 1 through a second patterning process; and manufacturing a third black matrix 323 on the side of the second black matrix 321 far away from the substrate 1 through a third patterning process, wherein the orthographic projection of the second black matrix 321 on the substrate 1 is overlapped with the orthographic projection of the third black matrix 323 on the substrate 1. Wherein: the first black matrix 311 and the first color filter 312 form a first color film layer 313, and the second black matrix 321, the second color filter 322 and the third black matrix 323 form a second color film layer 32.

Specifically, in the manufacturing method, the first black matrix 311 and the second black matrix 321 are manufactured and formed by using the same patterning process, and the first black matrix 311 and the second black matrix 321 are made of the same material, in the manufacturing method, a patterning process is added for one time, a third black matrix 323 arranged in a stacked manner with the second black matrix 321 is manufactured and formed, and the material of the third black matrix 323 is different from that of the second black matrix 321.

In some embodiments, forming the color film layer 3 on the side of the light emitting device layer 2 away from the substrate 1 includes: and manufacturing a first black matrix 311 and a second black matrix 321 on the side of the light-emitting device layer 2 far 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 positioned between the adjacent light-emitting units 21, and the orthographic projection of the second black matrix 321 on the substrate 1 is positioned between the adjacent light-emitting units 21. In one embodiment, as shown in fig. 3, the first color filter 312 and the first sub-color filter are formed on the side of the light emitting device layer 2 away from the substrate 1 by the second patterning process. As shown in fig. 4, a third patterning process is performed to form a second sub color filter unit on a side of the first sub color filter unit away from the substrate 1, the second sub color filter unit covers a portion of the first sub color filter unit, and covers a portion of the second black matrix 321, and the second sub color filter unit and the first sub color filter unit form a second color filter unit 322. For example, the second sub color filter unit covers the blue color filter unit and covers the second black matrix 321 adjacent to the blue color filter unit, so that the reflective color phase of the first color film layer 31 is different from the reflective color phase of the second color film layer 32. Wherein: the first black matrix 311 and the first color filter 312 form a first color film layer 31, and the second black matrix 321 and the second color filter 322 form a second color film layer 32.

Specifically, in the manufacturing method, the second color filter unit 322 may be manufactured and formed by two different manufacturing processes, the first color filter unit 312 and the first sub color filter unit are manufactured and formed by one-time composition process, then the second sub color filter unit is manufactured and formed by one-time composition process, and the second sub color filter unit and the first sub color filter unit form the second color filter unit 322.

In another embodiment, as shown in fig. 5, forming the color film layer 3 on the side of the light emitting device layer 2 away from the substrate 1 includes: and manufacturing a first black matrix 311 and a second black matrix 321 on one side of the light-emitting device layer 2 far 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 positioned between the adjacent light-emitting units 21, and the orthographic projection of the second black matrix 321 on the substrate 1 is positioned between the adjacent light-emitting units 21. The first color filter unit 312 and the second color filter unit 322 are fabricated on the side of the light emitting device layer 2 away from the substrate 1 by a second patterning process. Wherein: at least a portion of the second color filter unit 322 overlaps the second black matrix 321, and the first color filter unit 312 does not overlap the first black matrix 311, so that the reflective color phase of the first color film 31 is different from the reflective color phase of the second color film 32.

Specifically, in the manufacturing method, the second color filter unit 322 may be manufactured and formed by a single patterning process, and unlike the manufacturing and forming of the first color filter unit 312, at least a portion of the second color filter unit 322 in the second color filter unit 322 needs to overlap the second black matrix 321.

By applying the embodiment of the application, the following beneficial effects can be at least realized:

the display panel provided by the embodiment of the application adopts the color film layer structure different from the display area through the preset pattern area of the display panel, so that the reflection hue of the first color film layer in the display area of the display panel is different from the reflection hue of the second color film layer in the preset pattern area. When the display panel is in a screen-off state, due to the difference of the reflection hue, the preset pattern is obvious at a certain visual angle, and certain visual difference experience is brought to a user. In addition, the preset pattern can realize pixel level control, and can further meet the customization requirement of a user on the preset pattern.

Those of skill in the art will understand that various operations, methods, steps in the flow, measures, schemes discussed in this application can be alternated, modified, combined, or deleted. Further, other steps, measures, or schemes in various operations, methods, or flows that have been discussed in this application can be alternated, altered, rearranged, broken down, combined, or deleted. Further, steps, measures, schemes in the prior art having various operations, methods, procedures disclosed in the present application may also be alternated, modified, rearranged, decomposed, combined, or deleted.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless otherwise indicated herein. Moreover, at least a portion of the steps in the flow chart of the figure may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed alternately or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.

Claims (14)

1. A display panel, comprising:

a substrate;

a light emitting device layer on one side of the substrate, including a plurality of light emitting cells;

the color film layer is positioned on one side of the light-emitting device layer, which is far away from the substrate;

wherein: 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 positioned in the display area, and the orthographic projection of the second color film layer on the substrate is positioned in the preset pattern area;

the reflective color phase of the first color film layer is different from the reflective color phase of the second color film layer.

2. The display panel according to claim 1,

the first color film layer comprises a first black matrix and a plurality of first color filter units arranged in an array, the first color filter units are arranged in one-to-one correspondence with the light-emitting units, and the first black matrix is positioned between the adjacent first color filter units;

the second color film layer comprises a second black matrix and a plurality of second color filter units arranged in an array, the second color filter units are arranged in one-to-one correspondence with the light emitting units, and the second black matrix is positioned between the 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 reflective color phase of the first color film layer is different from that of the second color film layer.

3. The display panel according to claim 1,

the first color film layer comprises a first black matrix and a plurality of first color filter units arranged in an array, the first color filter units are arranged in one-to-one correspondence with the light emitting units, and the first black matrix is positioned between the adjacent first color filter units;

the second color film layer comprises a plurality of second color filter units arranged in an array, a second black matrix and a third black matrix, the second color filter units are arranged in one-to-one correspondence with the light emitting units, the second black matrix is positioned between the adjacent second color filter units, and the third black matrix is positioned on one side of the second black matrix, which is far away from the substrate, and is overlapped 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 reflective color phase of the first color film layer is different from that of the second color film layer.

4. The display panel according to claim 3, wherein an orthographic projection of the third black matrix on the substrate covers an orthographic projection of the second black matrix on the substrate, and an area of the orthographic projection of the third black matrix on the substrate is greater than or equal to an area of the orthographic projection of the second black matrix on the substrate.

5. The display panel according to claim 1,

the first color film layer comprises a first black matrix and a plurality of first color filter units, the first color filter units are arranged in one-to-one correspondence with the light-emitting units, and the orthographic projection of the first black matrix on the substrate is positioned between the adjacent light-emitting units;

the second color film layer comprises a second black matrix and a plurality of second color filter units, the second color filter units are arranged in one-to-one correspondence with the light-emitting units, and the orthographic projection of the second black matrix on the substrate is positioned between the adjacent light-emitting units;

at least part of the second color filter unit is overlapped with the second black matrix, and the first color filter unit is not overlapped with the first black matrix, so that the reflection color phase of the first color film layer is different from the reflection color phase of the second color film layer.

6. The display panel according to claim 5, wherein an optical density of the first black matrix is the same as an optical density of the second black matrix.

7. The display panel according to claim 5, wherein 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 second color filter unit of the red filter unit, the green filter unit and the blue filter unit is overlapped with the second black matrix.

8. The display panel according to claim 1, further comprising:

a pixel defining layer located at one side of the substrate, including a bank and an opening, the bank being located between adjacent ones of the light emitting units, an orthographic projection of the light emitting units on the substrate covering the opening;

and the packaging layer is positioned between the color film layer and the light-emitting device layer.

9. A display device characterized by comprising the display panel according to any one of claims 1 to 8.

10. A preparation method of a display panel, wherein the display panel comprises a preset pattern area and a display area, is characterized by comprising the following steps:

providing a substrate;

forming a light emitting device layer on one side of the substrate;

and forming a color film layer on one side of the light-emitting device layer, which is far away from the substrate, wherein 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 positioned in the display area, the orthographic projection of the second color film layer on the substrate is positioned in the preset pattern area, and the reflection color phase of the first color film layer is different from the reflection color phase of the second color film layer.

11. The method for manufacturing a display panel according to claim 10, wherein the forming a color film layer on a side of the light emitting device layer away from the substrate comprises:

manufacturing a first black matrix on one side, far away from the substrate, of the light-emitting device layer through a first composition process, wherein the orthographic projection of the first black matrix on the substrate is located between the adjacent light-emitting units;

manufacturing a second black matrix on one side, far away from the substrate, of the light-emitting device layer through a second composition process, wherein the orthographic projection of the second black matrix on the substrate is located between the adjacent light-emitting units;

and manufacturing a first color filter unit and a second color filter unit on one side of the light-emitting device layer far away from the substrate through a third composition process.

12. The method for manufacturing a display panel according to claim 10, wherein the forming a color film layer on a side of the light emitting device layer away from the substrate comprises:

manufacturing a first black matrix and a second black matrix on one side, far away from the substrate, of the light-emitting device layer through a first-time composition process, wherein the orthographic projection of the first black matrix on the substrate is located between the adjacent light-emitting units, and the orthographic projection of the second black matrix on the substrate is located between the adjacent light-emitting units;

manufacturing a first color filter unit and a second color filter unit on one side of the light-emitting device layer far away from the substrate through a second composition process;

and manufacturing a third black matrix on one side of the second black matrix far away from the substrate through a third composition process, wherein the orthographic projection of the second black matrix on the substrate is overlapped with the orthographic projection of the third black matrix on the substrate.

13. The method for manufacturing a display panel according to claim 10, wherein the forming a color film layer on a side of the light emitting device layer away from the substrate comprises:

manufacturing a first black matrix and a second black matrix on one side, far away from the substrate, of the light-emitting device layer through a first-time composition process, wherein the orthographic projection of the first black matrix on the substrate is located between the adjacent light-emitting units, and the orthographic projection of the second black matrix on the substrate is located between the adjacent light-emitting units;

manufacturing a first color filter unit and a first sub color filter unit on one side of the light-emitting device layer far away from the substrate through a second composition process;

and manufacturing a second sub-color filter unit through a third composition process, wherein the second sub-color filter unit covers a part of the first sub-color filter unit and covers a part 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.

14. The method for manufacturing a display panel according to claim 10, wherein the forming a color film layer on a side of the light emitting device layer away from the substrate comprises:

manufacturing a first black matrix and a second black matrix on one side, far away from the substrate, of the light-emitting device layer through a first-time composition process, wherein the orthographic projection of the first black matrix on the substrate is located between the adjacent light-emitting units, and the orthographic projection of the second black matrix on the substrate is located between the adjacent light-emitting units;

and manufacturing a first color filter unit and a second color filter unit on one side of the light-emitting device layer far away from the substrate through a second composition process.

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