CN114122091A

CN114122091A - Display panel, manufacturing method thereof and display device

Info

Publication number: CN114122091A
Application number: CN202111350345.6A
Authority: CN
Inventors: 赖天奇; 黄健; 张文强; 徐瑞乾; 潘雪楠
Original assignee: BOE Technology Group Co Ltd; Chengdu BOE Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Chengdu BOE Optoelectronics Technology Co Ltd
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2022-03-01

Abstract

A display panel, a manufacturing method thereof and a display device are disclosed, which relate to the technical field of display and are used for reducing the reflectivity of the display panel. The display panel comprises a display substrate and an antireflection structure positioned on the display side of the display substrate. The display substrate is provided with a plurality of light emitting areas and non-light emitting areas separating the light emitting areas; the antireflection structure includes: a plurality of color filters covering the plurality of light emitting areas; and the light absorption laminated layer covers the non-luminous region and comprises at least two layers of filter films with different colors. The display panel that this disclosure provided sets up antireflection structure through the demonstration side at display panel, and this antireflection structure can reduce the reflection of display panel demonstration side to incident light to improve the light transmittance of display panel demonstration side, and then promoted display panel's display effect.

Description

Display panel, manufacturing method thereof and display device

Technical Field

The disclosure relates to the field of display technologies, and in particular, to a display panel, a manufacturing method thereof, and a display device.

Background

The display panel has various light reflecting structures (e.g., a pixel driving circuit, an anode, etc.), and after the external ambient light is irradiated from the light emitting side of the display panel to the inside of the display panel, the light reflecting structures easily reflect the external ambient light, thereby adversely affecting the display effect of the display device.

Disclosure of Invention

The present disclosure is directed to a display panel, a manufacturing method thereof and a display device, for reducing the reflectivity of the display panel to external light and improving the display effect of the display panel.

In order to achieve the above object, the present disclosure provides the following technical solutions:

in one aspect, some embodiments of the present disclosure provide a display panel including: the display substrate and be located the antireflection structure of display substrate demonstration side. Wherein the display substrate has a plurality of light emitting regions and a non-light emitting region separating the plurality of light emitting regions; the antireflection structure includes: a plurality of color filters covering the plurality of light emitting areas; and the light absorption laminated layer covers the non-luminous region and comprises at least two layers of filter films with different colors.

In some embodiments, the at least two layers of different color filter films include a first color filter film and a second color filter film, which are stacked, wherein the first color and the second color are any two of three primary colors.

In some embodiments, the plurality of light emitting areas are divided into at least one light emitting area of a first color, at least one light emitting area of a second color, and at least one light emitting area of a third color; the plurality of color filter portions are at least one filter portion of a first color, at least one filter portion of a second color, and at least one filter portion of a third color; the light-emitting area of the first color is covered by the light-filtering part of the first color; the light-emitting area of the second color is covered by the light-filtering part of the second color; the light-emitting area of the third color is covered by the light-filtering part of the third color; the light filtering film of the first color and the light filtering part of the first color are manufactured through a one-time composition process; and/or the filter film of the second color and the filter part of the second color are manufactured by a one-time composition process.

In some embodiments, the at least two layers of filter films with different colors further include a filter film with a third color stacked on the filter film with the first color and the filter film with the second color, and the first color, the second color, and the third color are three primary colors.

In some embodiments, the plurality of light emitting areas are divided into at least one light emitting area of a first color, at least one light emitting area of a second color, and at least one light emitting area of a third color; the plurality of color filter portions are at least one filter portion of a first color, at least one filter portion of a second color, and at least one filter portion of a third color; the light-emitting area of the first color is covered by the light-filtering part of the first color; the light-emitting area of the second color is covered by the light-filtering part of the second color; the light-emitting area of the third color is covered by the light-filtering part of the third color; the light filtering film of the first color and the light filtering part of the first color are manufactured through a one-time composition process; and/or the filter film with the second color and the filter part with the second color are manufactured by a one-time composition process; and/or the filter film of the third color and the filter part of the third color are manufactured by a one-time composition process.

In some embodiments, the thickness of the light absorbing stack layer is equal to the thickness of at least one of the plurality of color filters.

In some embodiments, the light absorbing stack layers have equal thickness for different color filters.

In some embodiments, the display panel further comprises: and the protective cover plate is positioned on one side of the antireflection structure far away from the display substrate.

In some embodiments, the display substrate comprises: a substrate; the circuit structure layer is positioned on one side of the substrate; the circuit structure layer is arranged on the substrate and comprises a plurality of light emitting devices positioned on one side of the circuit structure layer away from the substrate, and the plurality of light emitting devices are positioned in the plurality of light emitting areas; and the packaging layer is positioned on one side, far away from the circuit structure layer, of the plurality of light-emitting devices.

In another aspect, a method for manufacturing a display panel is provided, where the method includes: forming a display substrate; forming an antireflection structure on the display side of the display substrate; the display substrate is provided with a plurality of light emitting areas and non-light emitting areas separating the light emitting areas; the antireflection structure includes: a plurality of color filters covering the plurality of light emitting areas; and the light absorption laminated layer covers the non-luminous region and comprises at least two layers of filter films with different colors.

In some embodiments, the plurality of light emitting areas are divided into at least one light emitting area of a first color, at least one light emitting area of a second color, and at least one light emitting area of a third color; the step of forming an anti-reflective structure on the display side of the display substrate comprises: forming a film of a first color on the display side of the display substrate, and patterning the film of the first color to form a filter film of the first color and a filter part of the first color; the light filtering part of the first color covers the light emitting region of the first color, the light filtering film of the first color covers the non-light emitting region, and the thickness of the light filtering film of the first color is smaller than that of the light filtering part of the first color; forming a film of a second color on the display side of the display substrate, and patterning the film of the second color to form a filter film of the second color and a filter part of the second color; the light filtering part of the second color covers the light emitting region of the second color, the light filtering film of the second color covers the non-light emitting region, and the thickness of the light filtering film of the second color is smaller than that of the light filtering part of the second color.

In some embodiments, the step of forming an anti-reflective structure on the display side of the display substrate further comprises: forming a film of a third color on the display side of the display substrate, and performing patterning processing on the film of the third color to form a filter film of the third color and a filter part of the third color; the light filtering part of the third color covers the light emitting region of the third color, the light filtering film of the third color covers the non-light emitting region, and the thickness of the light filtering film of the third color is smaller than that of the light filtering part of the third color.

In still another aspect, there is provided a display device including: the display panel of any of the above.

The display panel, the manufacturing method thereof and the display device provided by the disclosure have the following beneficial effects:

the display panel provided by the present disclosure, since the antireflection structure is provided on the display side of the display panel, the antireflection structure includes a plurality of color filter portions covering a plurality of light emitting regions and a light absorbing stack layer covering a non-light emitting region. Wherein, this extinction stromatolite includes the filter coating of at least two-layer different colours, when external light enters into a plurality of colored filtering portion, only can be permeated by with the light that colored filtering portion colour corresponds, the light of other wave bands can be absorbed, so external light is behind colored filtering portion, only leave a monochromatic light, this monochromatic light is reflected the extinction stromatolite at luminescent device's upper surface, because this extinction stromatolite includes the filter coating of at least two-layer different colours, this monochromatic light is absorbed and can not jet out the display panel outside after being reflected the extinction stromatolite, thereby reduced the reflection of display panel demonstration side to incident light, thereby the light transmittance of display panel demonstration side has been improved, and then display panel's display effect has been promoted.

The manufacturing method of the display panel and the display device provided by the present disclosure have the same advantages as those achieved by the display panel provided by the above technical scheme, and are not repeated herein.

Drawings

Fig. 1 is a block diagram of a display panel according to some embodiments of the present disclosure;

FIG. 2 is a diagram illustrating the transmittance of different color filters in the visible light band;

FIG. 3A is a block diagram of the light absorbing stack of FIG. 1;

FIG. 3B is yet another block diagram of the light absorbing stack of FIG. 1;

FIG. 3C is yet another block diagram of the light absorbing stack of FIG. 1;

FIG. 3D is yet another block diagram of the light absorbing stack of FIG. 1;

FIG. 3E is yet another block diagram of the light absorbing stack of FIG. 1;

FIG. 3F is yet another block diagram of the light absorbing stack of FIG. 1;

FIG. 4 is a block diagram of yet another display panel provided in some embodiments of the present disclosure;

FIG. 5A is a schematic diagram of a different structure of the light absorbing stack of FIG. 4;

FIG. 5B is a block diagram of the light absorbing stack of FIG. 4;

FIG. 5C is yet another block diagram of the light absorbing stack of FIG. 4;

FIG. 5D is yet another block diagram of the light absorbing stack of FIG. 4;

FIG. 5E is yet another block diagram of the light absorbing stack of FIG. 4;

FIG. 5F is yet another block diagram of the light absorbing stack of FIG. 4;

FIG. 6 is a block diagram of a display device according to some embodiments of the present disclosure;

fig. 7 is a flowchart of a method for manufacturing a display panel according to some embodiments of the present disclosure;

fig. 8A to 8C are structural diagrams corresponding to steps in a method for manufacturing a display panel according to some embodiments of the present disclosure;

fig. 9 is a flow chart of a method of fabricating an antireflective structure according to some embodiments of the present disclosure;

fig. 10A to 10C are structural diagrams corresponding to steps in a method for manufacturing a display panel according to some embodiments of the disclosure;

fig. 11A to 11C are structural diagrams corresponding to steps in a method for manufacturing a display panel according to some embodiments of the present disclosure.

Detailed Description

Technical solutions in some embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments provided by the present disclosure belong to the protection scope of the present disclosure.

Unless the context requires otherwise, throughout the description and the claims, the term "comprise" and its other forms, such as the third person's singular form "comprising" and the present participle form "comprising" are to be interpreted in an open, inclusive sense, i.e. as "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" and the like are intended to indicate that a particular feature, structure, material, or characteristic associated with the embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be included in any suitable manner in any one or more embodiments or examples.

In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating 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 embodiments of the present disclosure, "a plurality" means two or more unless otherwise specified.

In describing some embodiments, expressions of "coupled" and "connected," along with their derivatives, may be used. For example, the term "connected" may be used in describing some embodiments to indicate that two or more elements are in direct physical or electrical contact with each other. As another example, some embodiments may be described using the term "coupled" to indicate that two or more elements are in direct physical or electrical contact. However, the terms "coupled" or "communicatively coupled" may also mean that two or more elements are not in direct contact with each other, but yet still co-operate or interact with each other. The embodiments disclosed herein are not necessarily limited to the contents herein.

Example embodiments are described herein with reference to cross-sectional and/or plan views as idealized example figures. In the drawings, the thickness of layers and regions are exaggerated for clarity. Variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, are to be expected. Thus, the exemplary embodiments should not be construed as limited to the shapes of regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. For example, an etched region shown as a rectangle will typically have curved features. Thus, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the actual shape of a region of a device and are not intended to limit the scope of the exemplary embodiments.

Referring to fig. 1, an embodiment of the present disclosure provides a display panel 100, where the display panel 100 may be: an Organic Light Emitting Diode (OLED) display panel; a Quantum Dot Light Emitting Diodes (QLED) display panel, etc., which is not limited in this disclosure.

Referring to fig. 1, the display panel 100 includes a display substrate 10 and an anti-reflective structure 20 disposed on a display side of the display substrate 10.

The display substrate 10 has a plurality of light emitting regions 30 and a non-light emitting region 40 separating the plurality of light emitting regions 30.

In some examples, the plurality of light emitting areas 30 are divided into at least one light emitting area 31 of a first color, at least one light emitting area 32 of a second color, and at least one light emitting area 33 of a third color. The plurality of light emitting regions 30 include light emitting regions of three colors of red, green, and blue. The light emitting region 31 of the first color, the light emitting region 32 of the second color, and the light emitting region 33 of the third color are one of the light emitting regions of three colors of red, green, and blue. Illustratively, as shown in fig. 1, the light-emitting region 31 of the first color is a blue light-emitting region, the light-emitting region 32 of the second color is a green light-emitting region, and the light-emitting region 33 of the third color is a red light-emitting region.

In some examples, the plurality of light emitting regions 30 includes light emitting regions of four colors of red, green, blue, and white. The

light emitting areas

31, 32 and 33 of the first, second and third colors are one of the three light emitting areas of red, green and blue, and at this time, the plurality of light emitting areas 30 further include a light emitting area of a fourth color, which is a white light emitting area.

The display panel 100 may implement a display function by driving the light emitting devices in the plurality of light emitting regions 30 to emit light. The number of the light emitting regions 30, the arrangement of the light emitting regions 30 of different colors, and the size of the light emitting regions 30 are not limited in the present disclosure, as long as the display panel 100 can display images.

The antireflection structure 20 includes: a plurality of color filters 21 and a light absorbing stack 22.

Wherein, the color filters 21 cover the light emitting areas 30. The light absorbing stack 22 covers the non-emissive area 40, and the light absorbing stack 22 includes at least two different color filters.

Referring to fig. 2, fig. 2 is a schematic diagram of transmittance of the filter films with different colors in a visible light band.

The visible light is a portion of the electromagnetic spectrum that can be perceived by the human eye, and the range of electromagnetic waves that can be perceived by the human eye is generally 400nm to 760 nm. Still others can perceive electromagnetic waves having wavelengths between about 380nm and 780 nm. The visible light of each color corresponds to different wavelength ranges, for example, the wavelength range corresponding to violet light is 400nm to 450nm, the wavelength range corresponding to blue light is 450nm to 480nm, the wavelength range corresponding to green light is 480nm to 490nm, the wavelength range corresponding to blue light is 490nm to 500nm, the wavelength range corresponding to green light is 500nm to 560nm, the wavelength range corresponding to yellow-green light is 560nm to 580nm, the wavelength range corresponding to yellow light is 580nm to 610nm, the wavelength range corresponding to orange light is 610nm to 650nm, and the wavelength range corresponding to red light is 650nm to 760 nm.

As can be seen from fig. 2, the display colors of the three filters with different colors are any one of red, blue, and green. Wherein, the wave band range of the light which can be transmitted by the filter film for displaying red is 580 nm-780 nm; the wave band range of the light which can be transmitted by the green filter film is 460 nm-620 nm and 700 nm-780 nm; the wave band range of the light transmitted by the filter film for displaying blue is 380 nm-540 nm.

It will be understood by those skilled in the art that when natural light passes through a filter displaying red, the red light is transmitted and other bands of light are absorbed; when natural light passes through the filter film displaying blue, the blue light is transmitted, and the light of other wave bands is absorbed; when natural light passes through the filter displaying green, the green light is transmitted, and the light of other bands is absorbed. When two different color filter films are stacked, red light, blue light and green light are absorbed.

The light absorbing stack 22 includes at least two different colored light filters, so that light of any wavelength is absorbed after passing through the light absorbing stack 22.

In some examples, referring to fig. 1, the plurality of color filter portions 21 are divided into at least one filter 211 of a first color, at least one filter 212 of a second color, and at least one filter 213 of a third color. The light-emitting region 31 of the first color is covered with the filter portion 211 of the first color; the light-emitting region 32 of the second color is covered by the light-filtering portion 212 of the second color; the light-emitting region 33 of the third color is covered with the filter portion 213 of the third color. The filter 211 of the first color passes only light of the first color and filters other light so that the other light cannot pass; the second color filter coating 212 passes only the second color light and filters other light so that other light cannot pass; the filter portion 213 of the third color passes only the light of the third color and filters other light so that the other light cannot pass. The material, thickness and size of the light filtering part 211 of the first color, the light filtering part 212 of the second color and the light filtering part 213 of the third color are not limited in the present disclosure, the light filtering parts correspond to the light emitting regions, the sizes of the light filtering parts are not completely the same according to the different light emitting colors of the light emitting regions, and those skilled in the art can reasonably set the sizes as required.

When external light enters the plurality of color filter portions 21 from the outside, only light corresponding to the color of the color filter portions 21 is transmitted, and light of other wavelength bands is absorbed, so that only a single color light is left after the external light passes through the color filter portions 21. For example, it may be: when natural light passes through the filter 211 of the first color, light a1 of the corresponding color is transmitted, and light of other wavelength bands (for example, light rays a2 and a3 shown in fig. 1) is absorbed; when natural light passes through the second color filter portion 212, light a2 of the corresponding color is transmitted, and light of other wavelength bands (such as light rays a1 and a3 shown in fig. 1) is absorbed; when natural light passes through the filter portion 213 of the third color, light a3 of the corresponding color is transmitted, and light of other wavelength bands (e.g., light rays a1, a2 shown in fig. 1) is absorbed; so that only a single color light is left after the external light passes through the color filter portion 21. The monochromatic light is reflected to the light absorption laminated layer 22 on the upper surface of the light emitting device, the light absorption laminated layer 22 comprises at least two layers of filter coatings with different colors, and the monochromatic light is reflected to the light absorption laminated layer 22 and then is absorbed without emitting the outside of the display panel 100, so that the reflection of incident light on the display side of the display panel 100 is reduced, the light transmittance of the display side of the display panel 100 is improved, and the display effect of the display panel 100 is further improved.

In some embodiments, with continued reference to fig. 1, the display substrate 10 includes: a substrate 11, a circuit structure layer 12, a plurality of light emitting devices 13, and an encapsulation layer 14.

It is noted that the type of the substrate 11 includes various types, including, for example, but not limited to, the following examples.

In some examples, the substrate 11 may be a rigid substrate. The rigid substrate may be, for example, a glass substrate or a PMMA (Polymethyl methacrylate) substrate.

In other examples, substrate 11 may be a flexible substrate. The flexible substrate can be selected from materials such as PET (Polyethylene terephthalate), PEN (Polyethylene naphthalate) or PI (Polyimide).

Referring to fig. 1, the circuit structure layer 12 is disposed on one side of the substrate 11. The circuit structure layer 12 may include a pixel driving circuit. The pixel driving circuit is coupled to one gate scanning signal line and one data signal line. The pixel driving circuit transmits the data signal transmitted by the data signal line to the light emitting device under the control of the gate scanning signal transmitted by the gate scanning signal line, thereby driving the light emitting device to emit light.

For example, the structure of the pixel driving circuit may include various structures, which are not limited by the present disclosure. For example, the structure of the pixel driving circuit may be "6T 1C", "7T 1C", "6T 2C", or "7T 2C"; here, "T" indicates a thin film transistor, the number preceding "T" indicates the number of thin film transistors, "C" indicates a storage capacitor, and the number preceding "C" indicates the number of storage capacitors. For another example, the thin film transistor included in the pixel driving circuit may be a thin film transistor of a bottom gate structure or a thin film transistor of a top gate structure.

The plurality of light emitting devices 13 are located on a side of the circuit structure layer 12 away from the substrate 11, and the plurality of light emitting devices 13 are located in the plurality of light emitting regions 30.

As shown in fig. 4, the light emitting device 13 may include a first electrode 131, a light emitting function layer 132, and a second electrode 133.

The first electrode 131 may be an anode (anode), and the second electrode 133 may be a cathode (cathode); alternatively, the first pole 131 may be a cathode and the second pole 133 may be an anode. And are not limited herein. The light emitting device 13 may be a top emission type light emitting device, a bottom emission type light emitting device, or a double-sided emission type light emitting device, which is not particularly limited herein.

When the light emitting device 13 is a top emission type light emitting device, the first electrode 131 is opaque, and may be a stacked structure of ITO (Indium Tin oxide)/Ag/ITO, and the second electrode 133 is transparent or translucent, and may be a thin metal silver. When the light emitting device 13 is a bottom emission type light emitting device, the first electrode 131 is transparent and may be Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), zinc oxide (ZnO), indium oxide (In2O3), or the like, and the second electrode 133 is opaque and may be metallic silver or metallic aluminum. In the case where the light emitting device 13 is a double-sided light emitting type light emitting device, the first electrode 131 and the second electrode 133 are transparent, and In this case, the first electrode 131 may be Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), zinc oxide (ZnO), indium oxide (In2O3), or the like, and the second electrode 133 may be a thin metal silver.

The light-emitting functional layer 132 includes a light-Emitting Layer (EL). In other examples, the light emitting function layer 132 may further include one or more of an Electron Transport Layer (ETL), an Electron Injection Layer (EIL), a Hole Transport Layer (HTL), and a Hole Injection Layer (HIL), in addition to the light emitting layer. In the case where the display panel 100 is an organic electroluminescent display panel, the light emitting layer is an organic light emitting layer. In the case where the display panel 100 is a quantum dot electroluminescent display panel, the light-emitting layer is a quantum dot light-emitting layer.

The Encapsulation layer 14 may be a Thin Film Encapsulation (TFE), or may be an Encapsulation substrate. The encapsulation layer 14 is configured to encapsulate the pixel driving circuit and the plurality of light emitting devices 13 on the substrate 11 to block water and oxygen, and prevent water and oxygen from corroding the light emitting devices 13, thereby affecting the light emitting efficiency and the service life of the light emitting devices 13.

In some examples, the encapsulation layer 13 may include: the first inorganic layer, the organic layer, and the second inorganic layer are sequentially disposed from bottom to top, and the encapsulation layer 13 may further include more inorganic layers and organic layers. The first inorganic layer and/or the second inorganic layer can be formed by using an inorganic insulating material and a deposition process, for example; the organic layer can be formed, for example, by using an organic insulating material and using an inkjet printing process.

In some embodiments, please continue to refer to fig. 1, the at least two layers of filters with different colors include a first color filter 221 and a second color filter 222 stacked together, wherein the first color and the second color are any two of three primary colors

It should be noted that "the first color and the second color are any two of the three primary colors" includes three cases that the first color and the second color are red and green, the first color and the second color are red and blue, and the first color and the second color are green and blue.

Referring to fig. 3A to 3F, fig. 3A to 3F are schematic diagrams illustrating different structures of the light absorbing stack 22 in fig. 1.

In some examples, the first color and the second color are red and green, and in this case, the filter 221 can be a red filter and the filter 222 can be a green filter, as shown in fig. 3A; alternatively, the filter 221 may be a green filter and the filter 222 may be a red filter, as shown in FIG. 3B. In still other examples, the first color and the second color are red and blue, and in this case, the filter 221 can be a red filter and the filter 222 can be a blue filter, as shown in fig. 3C; alternatively, the filter 221 may be a blue filter and the filter 222 may be a red filter, as shown in FIG. 3D. In other examples, referring to fig. 3C, the first color and the second color are green and blue, and in this case, the filter 221 may be a green filter and the filter 222 may be a blue filter, as shown in fig. 3E; alternatively, the filter 221 may be a blue filter and the filter 222 may be a green filter, as shown in FIG. 3F. The design can be designed by the person skilled in the art according to the practical requirements, and the embodiment of the disclosure does not limit the design.

In this embodiment, the light absorbing lamination layer 22 includes at least two layers of filter coatings with different colors, the at least two layers of filter coatings with different colors include a first color filter coating 221 and a second color filter coating 222 which are stacked, and the first color and the second color are any two of three primary colors, so that light reflected to the light absorbing lamination layer 22 by the upper surface of the light emitting device can be absorbed by the light absorbing lamination layer 22 without being emitted outside the display panel 100, thereby reducing reflection of incident light by the display side of the display panel 100, thereby improving light transmittance of the display side of the display panel 100, and further improving the display effect of the display panel 100.

In some embodiments, the first color filter film 221 and the first color filter portion 211 are formed by a single patterning process. The material of the filter film 221 of the first color is the same as that of the filter part 211 of the first color, and the filter film can be simultaneously prepared in the same photolithography process, so that one photolithography process can be simplified, the technical problem of complicated processes existing in the antireflection structure of the existing display panel is solved, and the material cost of the mask plate is saved.

In some embodiments, the second color filter 222 and the second color filter 212 are fabricated by a single patterning process. The material of the second color filter film 222 is the same as that of the second color filter portion 212, and the second color filter film and the second color filter portion can be simultaneously manufactured in the same photolithography process, so that one photolithography process can be simplified, the technical problem of complicated processes of the antireflection structure of the existing display panel is solved, and the material cost of the mask plate is saved.

In some embodiments, the total thickness of the stacked first color filter 221 and the second color filter 222 is equal to the thickness of at least one of the first color filter 211, the second color filter 212, and the third color filter 213.

The phrase "the total thickness of the first color filter 221 and the second color filter 222 stacked and set is equal to the thickness of at least one of the first color filter 211, the second color filter 212, and the third color filter 213" means that the total thickness of the first color filter 221 and the second color filter 222 stacked and set is equal to the thickness of any one of the first color filter 211, the second color filter 212, and the third color filter 213; alternatively, the total thickness of the stacked first color filter 221 and second color filter 222 is equal to the thickness of two of the first color filter 211, the second color filter 212, and the third color filter 213; alternatively, the total thickness of the first color filter 221 and the second color filter 222 stacked on each other is equal to the thickness of the first color filter 211, the second color filter 212, and the third color filter 213.

The phrase "the total thickness of the stacked first color filter 221 and second color filter 222 is equal to the thickness of two of the first color filter 211, second color filter 212, and third color filter 213" means that the total thickness of the stacked first color filter 221 and second color filter 222 is equal to the thickness of two of the first color filter 211, second color filter 212, and third color filter 213. Similarly, the phrase "the total thickness of the stacked first color filter 221 and second color filter 222 is equal to the thickness of the first color filter 211, second color filter 212, and third color filter 213" means that the total thickness of the stacked first color filter 221 and second color filter 222 is equal to the thickness of the first color filter 211, the thickness of the second color filter 212, and the thickness of the third color filter 213.

In this embodiment, the total thickness of the stacked first color filter 221 and the second color filter 222 is equal to the thickness of at least one of the first color filter 211, the second color filter 212, and the third color filter 213, so that the surface of the side of the antireflection structure 20 away from the display substrate 10 is relatively flat, which is more beneficial to improving the light transmittance of the display side of the display panel 100 and improving the display effect of the display panel 100.

In some embodiments, referring to fig. 3A, the thickness d1 of the first color filter 221 is equal to the thickness d2 of the second color filter 222. Therefore, the manufacturing process of the first color filter 221 and the second color filter 222 can be relatively simple.

In some embodiments, referring to fig. 4 and fig. 5A-5F, fig. 5A-5F are different structural diagrams of the light absorbing stack 22 in fig. 4. The at least two layers of filters with different colors further include a filter 223 with a third color stacked on the filter 221 with the first color and the filter 222 with the second color. The first color, the second color and the third color are three primary colors.

Wherein the first color, the second color and the third color may be red, green and blue with respect to each other. The sequence of the filter film structures of the three colors can be randomly arranged and combined. In some examples, the first color is green, the second color is blue, and the third color is red. In other examples, the first color is red, the second color is green, and the third color is blue. Other combinations are of course possible and are merely illustrative.

Alternatively, the first color, the second color, and the third color are cyan, magenta, and yellow, for example, the first color is cyan, the second color is magenta, and the third color is yellow, but other combinations are also possible.

In this embodiment, the light absorbing stack 22 includes a first color filter 221, a second color filter 222, and a third color filter 223, which are stacked, and the first color, the second color, and the third color are three primary colors, so that light reflected by the upper surface of the light emitting device to the light absorbing stack 22 will be absorbed by the light absorbing stack 22 and will not be emitted outside the display panel 100, thereby reducing reflection of incident light by the display side of the display panel 100, improving light transmittance of the display side of the display panel 100, and further improving the display effect of the display panel 100.

In some embodiments, with reference to fig. 4, when the light absorbing stack 22 includes the first color filter 221, the second color filter 222, and the third color filter 223, the third color filter 223 and the third color filter 213 are formed by a single patterning process. The material of the third color filter film 223 is the same as that of the third color filter part 213, and the third color filter film can be simultaneously prepared in the same photolithography process, so that one photolithography process can be simplified, the technical problem of complicated processes existing in the anti-reflection structure of the existing display panel is solved, and the material cost of the mask plate is saved.

In some embodiments, the total thickness of the first color filter 221, the second color filter 222, and the third color filter 223, which are stacked, is equal to the thickness of at least one of the first color filter 211, the second color filter 212, and the third color filter 213.

The phrase "the total thickness of the first color filter 221, the second color filter 222, and the third color filter 223 stacked and set is equal to the thickness of at least one of the first color filter 211, the second color filter 212, and the third color filter 213" means that the total thickness of the first color filter 221, the second color filter 222, and the third color filter 223 stacked and set is equal to the thickness of any one of the first color filter 211, the second color filter 212, and the third color filter 213; alternatively, the total thickness of the stacked first color filter 221, second color filter 222, and third color filter 223 is equal to the thickness of two of the first color filter 211, second color filter 212, and third color filter 213; alternatively, the total thickness of the first color filter 221, the second color filter 222, and the third color filter 223 stacked in layers is equal to the thickness of the first color filter 211, the second color filter 212, and the third color filter 213.

The phrase "the total thickness of the first color filter 221, the second color filter 222, and the third color filter 223 stacked is equal to the thickness of two of the first color filter 211, the second color filter 212, and the third color filter 213" means that the total thickness of the first color filter 221, the second color filter 222, and the third color filter 223 stacked is equal to the thickness of two of the first color filter 211, the second color filter 212, and the third color filter 213, respectively. Similarly, the phrase "the total thickness of the stacked first color filter 221, second color filter 222, and third color filter 223 is equal to the thickness of the first color filter 211, second color filter 212, and third color filter 213" means that the total thickness of the stacked first color filter 221, second color filter 222, and third color filter 223 is equal to the thickness of the first color filter 211, the thickness of the second color filter 212, and the thickness of the third color filter 213.

In this embodiment, the total thickness of the stacked first color filter 221, second color filter 222, and third color filter 223 is equal to the thickness of at least one of the first color filter 211, the second color filter 212, and the third color filter 213, so that the surface of the side of the antireflection structure 20 away from the display substrate 10 is relatively flat, which is more beneficial to improving the light transmittance of the display side of the display panel 100 and improving the display effect of the display panel 100.

In some embodiments, the thickness of the first color filter 221, the second color filter 222, and the third color filter 223 are equal. Therefore, the manufacturing processes of the first color filter 221, the second color filter 222, and the third color filter 223 can be relatively simple.

In some embodiments, referring to fig. 1 and 4, the display panel 100 further includes a protective cover 50. Protective cover sheet 50 is used to protect antireflective structure 20.

Referring to fig. 6, the present disclosure also provides a display panel 1000, and the display panel 1000 includes any one of the display panels 100 described above.

In some examples, display device 1000 may be any device that displays text or images, whether in motion (e.g., video) or stationary (e.g., still images). More particularly, it is contemplated that the embodiments may be implemented in or associated with a variety of electronic devices such as, but not limited to, mobile telephones, wireless devices, Personal Digital Assistants (PDAs), hand-held or portable computers, Global Positioning System (GPS) receivers/navigators, cameras, motion Picture Experts Group (MP 4) video players, video cameras, game consoles, wrist watches, clocks, calculators, television monitors, computer monitors, automobile displays (e.g., odometer display, etc.), navigators, cockpit controls and/or displays, displays of camera views (e.g., displays of rear view cameras in vehicles), electronic photographs, electronic billboards or signs, video game consoles, and the like, Projectors, architectural structures, packaging, and aesthetic structures (e.g., displays of images for a piece of jewelry), and the like.

For example, the display device 1000 may further include a frame, a source driver chip, an FPC (Flexible Printed Circuit), a PCB (Printed Circuit Board), other electronic components, and the like.

The beneficial effects that the display device 1000 provided in the present disclosure can achieve are the same as the beneficial effects that the display panel 100 provided in the above technical solution can achieve, and are not described herein again.

Referring to fig. 7, the present disclosure further provides a method for manufacturing the display panel 100, which is used to manufacture the display panel 100. The method of manufacturing the display panel 100 includes steps S1 to S3.

S1: a display substrate 10 is formed.

In this step, as shown in fig. 8A. The display substrate 10 may include a substrate 11, a circuit structure layer 12, a plurality of light emitting devices 13, and an encapsulation layer 14. Specifically, reference may be made to the descriptions in some of the above embodiments, which are not repeated herein.

S2: an anti-reflection structure 20 is formed on the display side of the display substrate.

In this step, as shown in fig. 8B and 8C. The display substrate 10 has a plurality of light-emitting regions 30 and a non-light-emitting region 40 separating the plurality of light-emitting regions 30. The antireflection structure 20 includes: a plurality of color filters 21 covering the plurality of light emitting areas 30; and a light absorbing stack 22 covering the non-light emitting areas 40, the light absorbing stack 22 comprising at least two layers of filters of different colors. In some examples, as shown in fig. 8B, the light absorbing stack 22 includes two layers of different color filters; in other examples, as shown in FIG. 8C, the light absorbing stack 22 includes three layers of different color filters.

The method for manufacturing the display panel 100 according to some embodiments of the present disclosure may be used to manufacture the display panel 100 according to any of the embodiments. The display side of the display panel 100 is provided with an antireflection structure 20, and the antireflection structure 20 includes a plurality of color filters 21 covering a plurality of light emitting regions and a light absorbing stack 22 covering a non-light emitting region. Wherein, this extinction stromatolite 22 includes the filter coating of at least two-layer different colours, when external light enters into a plurality of color filter portion 21, only can be permeated by the light that corresponds with color filter portion 21 colour, the light of other wave bands can be absorbed, so after external light passes through color filter portion 21, only leave a monochromatic light, this monochromatic light is reflected extinction stromatolite 22 at light emitting device's upper surface, because this extinction stromatolite 22 includes the filter coating of at least two-layer different colours, this monochromatic light is absorbed and can not jet out the display panel outside after being reflected extinction stromatolite 22, thereby reduced the reflection of display panel 100 demonstration side to incident light, thereby the light transmittance of display panel 100 demonstration side has been improved, and then display panel 100's display effect has been promoted.

In some embodiments, the plurality of light emitting areas 30 are divided into at least one light emitting area 31 of a first color, at least one light emitting area 32 of a second color, and at least one light emitting area 33 of a third color. Referring to fig. 9, the step of forming the anti-reflective structure 20 on the display side of the display substrate 10 includes steps S100 to S200.

S100: a thin film of a first color is formed on the display side of the display substrate 10, and is subjected to patterning processing to form a filter film 221 of the first color and a filter portion 211 of the first color.

In this step, as shown in fig. 10A. The light-emitting region 31 of the first color is covered by the light-filtering portion 211 of the first color, the non-light-emitting region 40 is covered by the light-filtering film 221 of the first color, and the thickness of the light-filtering film 221 of the first color is smaller than that of the light-emitting region 211 of the first color.

The material of the first color filter 221 is the same as that of the first color filter 211, and can be prepared simultaneously in the same photolithography process. For example, the thin film of the first color may be etched using a half etching process to form the filter film 221 of the first color and the filter portion 211 of the first color. The semi-etching process described herein refers to: instead of removing half of the first color by etching uniformly, the first color thin film is etched to form the first color filter 221 and the first color filter 211 having different thicknesses.

S200: a thin film of the second color is formed on the display side of the display substrate 10, and is subjected to patterning processing to form the filter 222 of the second color and the filter 212 of the second color.

In this step, as shown in fig. 10B. The second color filter portion 212 covers the light emitting region 32 of the second color, the second color filter 222 covers the non-light emitting region 40, and the thickness of the second color filter 222 is smaller than that of the second color filter portion 212.

The second color filter 222 and the second color filter 212 have the same material and can be fabricated simultaneously in the same photolithography process. Illustratively, the second color thin film may be etched using a half-etching process to form the second color filter 222 and the second color filter 212. The semi-etching process described herein refers to: instead of uniformly etching away half, the second color thin film is etched to form the second color filter 222 and the second color filter 212 having different thicknesses.

On this basis, as shown in fig. 10C, the step of forming the anti-reflection structure 20 on the display side of the display substrate 10 further includes forming a filter 213 of a third color in the light emitting region 33 of the third color.

In this embodiment, the material of the first color filter 221 is the same as that of the first color filter 211, and can be prepared simultaneously in the same photolithography process; the material of the second color filter 222 and the material of the second color filter 212 are the same, and they can be simultaneously manufactured in the same photolithography process, so that 3 photolithography processes are required for forming the anti-reflective structure 20. Compared with the prior art, the OLED panel comprises the color film layer, the color film layer comprises the red light resistor, the green light resistor, the blue light resistor and the black matrix, and when the color film layer is formed on the OLED panel, 4 photoetching processes are needed, so that one photoetching process can be simplified, the technical problem of complex processes of an anti-reflection structure of the existing display panel is solved, and the material cost of the mask plate is saved.

In some embodiments, the at least two layers of filters of different colors further include a filter 223 of a third color stacked on the first color filter 221 and the second color filter 222. In this case, the step of forming the anti-reflection structure 20 on the display side of the display substrate 10 also includes the steps S100 to S200.

A thin film of a first color is formed on the display side of the display substrate 10, and is subjected to patterning processing to form a filter film 221 of the first color and a filter portion 211 of the first color. In this step, the structure formed may also be as shown in fig. 11A.

A thin film of the second color is formed on the display side of the display substrate 10, and is subjected to patterning processing to form the filter 222 of the second color and the filter 212 of the second color. In this step, the structure formed may also be as shown in fig. 11B.

On the basis, the method further includes forming a thin film of a third color on the display side of the display substrate 10, and performing patterning on the thin film of the third color to form the filter film 223 of the third color and the filter portion 213 of the third color.

In this step, please refer to fig. 11C. The light-emitting region 33 of the third color is covered by the filter 213 of the third color, the non-emitting region 40 is covered by the filter 223 of the third color, and the thickness 223 degree of the filter of the third color is smaller than the thickness 213 of the light-filtering portion of the third color.

In this embodiment, the material of the first color filter 221 is the same as that of the first color filter 211, and can be prepared simultaneously in the same photolithography process; the material of the second color filter 222 is the same as that of the second color filter 212, and can be prepared simultaneously in the same photolithography process; the third color filter 223 and the third color filter 213 may be formed simultaneously in the same photolithography process, and thus, 3 photolithography processes are required for forming the anti-reflective structure 20. Compared with the prior art, the OLED panel comprises the color film layer, the color film layer comprises the red light resistor, the green light resistor, the blue light resistor and the black matrix, and when the color film layer is formed on the OLED panel, 4 photoetching processes are needed, so that one photoetching process can be simplified, the technical problem of complex processes of an anti-reflection structure of the existing display panel is solved, and the material cost of the mask plate is saved.

The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art will appreciate that changes or substitutions within the technical scope of the present disclosure are included in the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A display panel, comprising:

a display substrate having a plurality of light emitting regions and a non-light emitting region separating the plurality of light emitting regions; and the number of the first and second groups,

an anti-reflection structure located on the display side of the display substrate;

wherein the anti-reflective structure comprises:

a plurality of color filters covering the plurality of light emitting areas; and the number of the first and second groups,

and the light absorption laminated layer covers the non-luminous region and comprises at least two layers of filter films with different colors.

2. The display panel according to claim 1,

the at least two layers of filter coatings with different colors comprise a first color filter coating and a second color filter coating which are arranged in a stacked mode, wherein the first color and the second color are any two of three primary colors.

3. The display panel according to claim 2,

the plurality of light emitting areas are divided into at least one light emitting area of a first color, at least one light emitting area of a second color and at least one light emitting area of a third color;

the plurality of color filter portions are at least one filter portion of a first color, at least one filter portion of a second color, and at least one filter portion of a third color; the light-emitting area of the first color is covered by the light-filtering part of the first color; the light-emitting area of the second color is covered by the light-filtering part of the second color; the light-emitting area of the third color is covered by the light-filtering part of the third color;

the light filtering film of the first color and the light filtering part of the first color are manufactured through a one-time composition process; and/or the presence of a gas in the gas,

the light filtering film of the second color and the light filtering part of the second color are manufactured through a one-time composition process.

4. The display panel according to claim 2,

the at least two layers of filter coatings with different colors further comprise a filter coating with a third color, wherein the filter coating with the first color and the filter coating with the second color are stacked, and the first color, the second color and the third color are three primary colors.

5. The display panel according to claim 4,

the light filtering film of the second color and the light filtering part of the second color are manufactured through a one-time composition process; and/or the presence of a gas in the gas,

the filter film of the third color and the filter part of the third color are manufactured by a one-time composition process.

6. The display panel according to any one of claims 1 to 5,

the thickness of the light absorbing stack layer is equal to the thickness of at least one of the plurality of color filters.

7. The display panel according to any one of claims 1 to 5,

the thicknesses of the light filtering films of different colors in the light absorption laminated layer are all equal.

8. The display panel according to any one of claims 1 to 5, further comprising:

and the protective cover plate is positioned on one side of the antireflection structure far away from the display substrate.

9. The display panel according to any one of claims 1 to 5, wherein the display substrate comprises:

a substrate;

the circuit structure layer is positioned on one side of the substrate;

the circuit structure layer is arranged on the substrate and comprises a plurality of light emitting devices positioned on one side of the circuit structure layer away from the substrate, and the plurality of light emitting devices are positioned in the plurality of light emitting areas; and the number of the first and second groups,

and the packaging layer is positioned on one side of the plurality of light-emitting devices far away from the circuit structure layer.

10. A manufacturing method of a display panel is characterized by comprising the following steps:

forming a display substrate;

forming an antireflection structure on the display side of the display substrate;

the display substrate is provided with a plurality of light emitting areas and non-light emitting areas separating the light emitting areas;

the antireflection structure includes:

11. The method for manufacturing a display panel according to claim 10, wherein the plurality of light-emitting areas are at least one light-emitting area of a first color, at least one light-emitting area of a second color, and at least one light-emitting area of a third color;

the step of forming an anti-reflective structure on the display side of the display substrate comprises:

forming a film of a first color on the display side of the display substrate, and patterning the film of the first color to form a filter film of the first color and a filter part of the first color; the light filtering part of the first color covers the light emitting region of the first color, the light filtering film of the first color covers the non-light emitting region, and the thickness of the light filtering film of the first color is smaller than that of the light filtering part of the first color;

forming a film of a second color on the display side of the display substrate, and patterning the film of the second color to form a filter film of the second color and a filter part of the second color; the light filtering part of the second color covers the light emitting region of the second color, the light filtering film of the second color covers the non-light emitting region, and the thickness of the light filtering film of the second color is smaller than that of the light filtering part of the second color.

12. The method for manufacturing a display panel according to claim 11,

the step of forming an anti-reflective structure on the display side of the display substrate further comprises:

forming a film of a third color on the display side of the display substrate, and performing patterning processing on the film of the third color to form a filter film of the third color and a filter part of the third color; the light filtering part of the third color covers the light emitting region of the third color, the light filtering film of the third color covers the non-light emitting region, and the thickness of the light filtering film of the third color is smaller than that of the light filtering part of the third color.

13. A display device, comprising:

the display panel according to any one of claims 1 to 9.