CN115498004A

CN115498004A - Display panel, manufacturing method thereof and display device

Info

Publication number: CN115498004A
Application number: CN202211246256.1A
Authority: CN
Inventors: 孙丹丹; 朱修剑
Original assignee: Kunshan Govisionox Optoelectronics Co Ltd; Hefei Visionox Technology Co Ltd
Current assignee: Kunshan Govisionox Optoelectronics Co Ltd; Hefei Visionox Technology Co Ltd
Priority date: 2022-10-12
Filing date: 2022-10-12
Publication date: 2022-12-20

Abstract

The application relates to a display panel, a manufacturing method thereof and a display device. The display panel includes: a substrate; a display layer group arranged on one side of the substrate, the display layer group comprising a plurality of light emitting elements; the color resistance layer group is positioned on one side of the display layer group, which is far away from the substrate, and comprises a plurality of first color resistance layers, a plurality of second color resistance layers and a plurality of third color resistance layers; the color resistance layer group is provided with a plurality of light-transmitting areas which are arranged corresponding to the light-emitting elements one by one and light-tight areas arranged among the light-transmitting areas; in the opaque region, at least two of first colour hinders layer, second colour hinders layer and third colour and hinders the layer and set up in the range upon range of, the region sets up monochromatic colour and hinders the layer that the monochromatic colour hinders the layer and be first colour hinders the layer or second colour hinders the layer or third colour and hinders the layer. The opaque regions may replace the black matrix. When the COE structure of the display panel is manufactured, the manufacturing process of the black matrix can be omitted, the manufacturing process of the COE structure is simplified, and the production cost is reduced.

Description

Display panel, manufacturing method thereof and display device

Technical Field

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

Background

Organic Light-Emitting diodes (OLEDs), as a new generation of Light-Emitting display technology, have the advantages of wide viewing angle, high contrast, fast response speed, low power consumption, flexible display, etc., and have been widely applied to products such as mobile phones and wearable devices, and thus have good application prospects.

Currently, in the OLED display panel, a polarizer technology is often used to reduce reflection, but the use of the polarizer increases the thickness of the display panel and reduces the brightness. Therefore, a display panel adopting a COE (Color On Encapsulation) structure is available, that is, a Color Filter (Color Filter) is fabricated On an Encapsulation layer to replace a polarizer to realize an anti-reflection function.

The COE structure of the display panel in the related art has the problem of complex manufacturing process.

Disclosure of Invention

Accordingly, there is a need for a display panel, a method for manufacturing the same, and a display device, so as to solve the problem of complicated manufacturing process of the COE structure in the display panel.

According to an aspect of the present application, there is provided a display panel. The display panel includes:

a substrate;

a display layer group arranged on one side of the substrate, wherein the display layer group comprises a plurality of light-emitting elements; and

the color resistance layer group is positioned on one side of the display layer group, which is far away from the substrate, and comprises a plurality of first color resistance layers, a plurality of second color resistance layers and a plurality of third color resistance layers;

the color resistance layer group is provided with a plurality of light-transmitting areas which are arranged in one-to-one correspondence with the light-emitting elements and light-tight areas which are arranged between the adjacent light-transmitting areas; at least two of the first color resistance layer, the second color resistance layer and the third color resistance layer are arranged in the light-tight area in a stacked mode, the light-pervious area is provided with a single-color resistance layer, and the single-color resistance layer is the first color resistance layer or the second color resistance layer or the third color resistance layer.

According to the display panel in the embodiment of the application, the color resistance layer group comprises the light-transmitting areas and the light-proof areas arranged between the adjacent light-transmitting areas, wherein the light-transmitting areas are provided with the single-color resistance layers, and at least two of the first color resistance layer, the second color resistance layer and the third color resistance layer are arranged in a stacked mode in the light-proof areas. That is to say, the color resist layers of at least two colors are stacked to form the opaque region of the color resist layer group, and the opaque region can be used to separate the sub-pixels of the display panel, so that the colors of the sub-pixels do not interfere with each other, and color mixing between the sub-pixels is avoided. In the display panel of the embodiment of the application, the opaque region of the color resistance layer group can replace the black matrix, i.e., the black matrix does not need to be additionally manufactured. Therefore, when the COE structure in the display panel is manufactured, the manufacturing process of the black matrix can be omitted, so that the manufacturing process of the COE structure is simplified, and the production cost of the display panel 10 is reduced.

In some embodiments, the first color resist layer, the second color resist layer, and the third color resist layer are stacked in the opaque region.

In some embodiments, the color-resistant layer set has a film thickness in the opaque region that is greater than a film thickness in the transparent region.

In some embodiments, the display panel further comprises a light-condensing layer positioned on a side of the color-resisting layer group facing away from the substrate;

the light condensation layer comprises a plurality of lens structures which are arranged in the light transmission area in a one-to-one correspondence mode, and the lens structures are arranged on the light transmission area and are abutted to the light-tight area of the color resistance layer group.

In some embodiments, the refractive index of the lens structure is greater than the refractive index of the opaque region.

In some embodiments, the lens structure includes a middle portion and an edge portion surrounding the middle portion, the middle portion has a uniform thickness, and the edge portion has a thickness that becomes continuously smaller in a direction from the middle portion toward the edge portion.

In some embodiments, the plurality of light-transmitting regions comprises a plurality of first color light-transmitting regions, a plurality of second color light-transmitting regions, and a plurality of third color light-transmitting regions; the first color light-transmitting area is correspondingly provided with the first color resistance layer, the second color light-transmitting area is correspondingly provided with the second color resistance layer, and the third color light-transmitting area is correspondingly provided with the third color resistance layer.

In some embodiments, the first color resist layer in the first color transparent region and the first color resist layer in the opaque region abutting the first color transparent region are of a unitary structure.

In some embodiments, the second color resist layer in the second color transparent region and the second color resist layer in the opaque region abutting the second color transparent region are of a unitary structure.

In some embodiments, the third color resist layer in the third color transmission region and the third color resist layer in the opaque region connected to the third color transmission region are of a unitary structure.

In some embodiments, the display panel further includes a pixel defining layer provided with a plurality of pixel openings, the plurality of light emitting elements being disposed in one-to-one correspondence with the plurality of pixel openings;

the light-transmitting area is opposite to the pixel opening along the thickness direction of the display panel.

In some embodiments, the display panel further comprises an encapsulation layer covering the set of display layers;

the color resistance layer group is positioned on one side of the packaging layer, which is far away from the substrate.

In some embodiments, the encapsulation layer comprises a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer in a stacked arrangement.

In some embodiments, the color-resist layer group is disposed on a side of the encapsulation layer facing away from the substrate.

In some embodiments, the display panel further includes a touch layer group disposed on a side of the encapsulation layer facing away from the substrate, and the color resistance layer group is disposed on a side of the touch layer group facing away from the encapsulation layer.

In some embodiments, the touch control layer group comprises a touch control functional layer arranged on the packaging layer and an insulating protection layer arranged on one side of the touch control functional layer, which is far away from the packaging layer, and the color resistance layer group is arranged on one side of the insulating protection layer, which is far away from the packaging layer.

According to another aspect of the present application, there is provided a method of manufacturing a display panel, the method including:

providing a substrate and a display layer group, wherein the display layer group is arranged on one side of the substrate and comprises a plurality of light-emitting elements;

forming a color resistance layer group, wherein the color resistance layer group is positioned on one side of the display layer group, which is far away from the substrate, and comprises a plurality of first color resistance layers, a plurality of second color resistance layers and a plurality of third color resistance layers; the color resistance layer group is provided with a plurality of light-transmitting areas which are arranged corresponding to the light-emitting elements one by one and light-tight areas which are arranged between the adjacent light-transmitting areas; at least two of the first color resistance layer, the second color resistance layer and the third color resistance layer are arranged in a stacked mode in the light-tight area, the single-color resistance layer is arranged in the light-tight area, and the single-color resistance layer is the first color resistance layer or the second color resistance layer or the third color resistance layer.

In the display panel manufactured by the manufacturing method in the embodiment of the application, the color resistance layer group comprises the light transmission areas and the light-tight areas arranged between the adjacent light transmission areas, wherein the light transmission areas are provided with the single-color resistance layers, and at least two of the first color resistance layer, the second color resistance layer and the third color resistance layer are arranged in a stacking manner in the light-tight areas. That is to say, the color resistance layers of at least two colors are stacked to form the opaque region of the color resistance layer group, and the opaque region can be used for separating the sub-pixels of the display panel, so that the colors of the sub-pixels cannot interfere with each other, and color mixing between the sub-pixels is avoided. In the display panel of the embodiment of the present application, the opaque region of the color resist layer group may replace the black matrix, that is, the black matrix does not need to be additionally fabricated. Therefore, when the COE structure in the display panel is manufactured, the manufacturing process of the black matrix can be omitted, so that the manufacturing process of the COE structure is simplified, and the production cost of the display panel 10 is reduced.

According to still another aspect of the present application, there is provided a display device including the display panel in any one of the above embodiments.

According to the display device in the embodiment of the application, the color resistance layer group of the display panel comprises the light-transmitting areas and the light-proof areas arranged between the adjacent light-transmitting areas, wherein the light-transmitting areas are provided with the single-color resistance layers, and at least two of the first color resistance layer, the second color resistance layer and the third color resistance layer are arranged in a stacking mode in the light-proof areas. That is to say, the color resistance layers of at least two colors are stacked to form the opaque region of the color resistance layer group, and the opaque region can be used for separating the sub-pixels of the display panel, so that the colors of the sub-pixels cannot interfere with each other, and color mixing between the sub-pixels is avoided. In the display panel of the embodiment of the application, the opaque region of the color resistance layer group can replace the black matrix, i.e., the black matrix does not need to be additionally manufactured. Therefore, when the COE structure in the display panel is manufactured, the manufacturing process of the black matrix can be omitted, so that the manufacturing process of the COE structure is simplified, and the production cost of the display panel 10 is reduced.

Drawings

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

FIG. 2 is a schematic structural diagram of a display panel according to another embodiment of the present application;

fig. 3 is a schematic structural diagram of a display panel in another embodiment of the present application.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In describing positional relationships, when an element such as a layer, film or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present, unless otherwise specified. Further, when a layer is referred to as being "under" another layer, it can be directly under, or one or more light-emitting units can be present. It will also be understood that when a layer is referred to as being "between" two layers, it can be the only layer between the two layers, or one or more light-emitting units can also be present.

Where the terms "comprising," "having," and "including" are used herein, another component may be added unless a specific limiting term is used, such as "only," "consisting of 8230; \8230composition," etc. Unless mentioned to the contrary, terms in the singular may include the plural and are not to be construed as being one in number.

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

It should also be understood that when interpreting elements, although not explicitly described, the elements are to be interpreted as including a range of error that should be within an acceptable range of deviation from the particular value as determined by one skilled in the art. For example, "about," "approximately," or "substantially" may mean within one or more standard deviations, without limitation.

Further, in the specification, the phrase "plane distribution diagram" refers to a drawing when the target portion is viewed from above, and the phrase "sectional diagram" refers to a drawing when a section taken by vertically cutting the target portion is viewed from the side.

Furthermore, the figures are not 1:1, and the relative dimensions of the various elements in the figures are drawn for illustration only and not necessarily to true scale.

Currently, in the OLED display panel, a polarizer technology is often used to reduce reflection, but the use of the polarizer may increase the thickness of the display panel by 50 μm to 100 μm, and may also cause a decrease in brightness. Therefore, there is a display panel that removes the polarizer, and manufactures a Color filter (also called a Color filter or a Color film) On the Encapsulation layer instead of the polarizer to achieve the anti-reflection, i.e., a display panel adopting a COE (Color On Encapsulation) structure. Compared with the polaroid technology, the display panel adopting the COE structure can reduce the thickness by about 20 percent, and can improve the brightness and the contrast.

In the related art, the COE structure of the display panel mainly includes a Black Matrix (BM), a blue color resistor, a red color resistor, and a green color resistor. Therefore, four yellow light processes of the black matrix, the blue color resistor, the red color resistor and the green color resistor need to be completed for manufacturing the COE structure, and especially, the requirements on material characteristics and alignment accuracy are high during the manufacturing of the black matrix. Therefore, the COE structure of the display panel in the related art has the problem that the manufacturing process is complex.

In view of the above problems, an embodiment of the first aspect of the present application provides a display panel to solve the problem that a manufacturing process of a COE structure in the display panel is complicated.

As shown in fig. 1, the display panel 10 in the first embodiment of the present application includes a substrate 100, a display layer group, and a color barrier layer group 200. The display layer group is disposed on one side of the substrate 100, the display layer group includes a plurality of light emitting elements 120, the color barrier layer group 200 is located on one side of the display layer group away from the substrate 100, and the color barrier layer group 200 includes a plurality of first color barrier layers 201, a plurality of second color barrier layers 202, and a plurality of third color barrier layers 203. The color resist layer assembly 200 has a plurality of transparent regions 210 corresponding to the light emitting elements 120, and opaque regions 220 disposed between adjacent transparent regions 210. In the opaque region 220, at least two of the first color resist layer 201, the second color resist layer 202, and the third color resist layer 203 are stacked, and the transparent region 210 is provided with a single color resist layer, which is the first color resist layer 201, the second color resist layer 202, or the third color resist layer 203.

According to the display panel 10 in the embodiment of the present application, the color resist group 200 includes the transparent regions 210 and the opaque regions 220 disposed between the adjacent transparent regions 210, wherein the transparent regions 210 are disposed with the single color resist layers, and at least two of the first color resist layer 201, the second color resist layer 202 and the third color resist layer 203 are stacked in the opaque regions 220. That is, the opaque regions 220 of the color resist layer group 200 are formed by stacking at least two color resist layers, and the opaque regions 220 can be used to separate the sub-pixels of the display panel 10, so that the colors of the sub-pixels do not interfere with each other, and color mixing between the sub-pixels is avoided. In the display panel 10 of the present embodiment, the opaque region 220 of the color barrier layer 200 can replace the black matrix, i.e., no additional black matrix needs to be fabricated. Therefore, when the COE structure in the display panel 10 is manufactured, the process of the black matrix can be omitted, so that the manufacturing process of the COE structure is simplified, and the production cost of the display panel 10 is reduced.

In addition, the display panel 10 with a black matrix structure is omitted, and the film layer is relatively more flat, so that a smaller bending radius can be realized, and the display panel is more suitable for products adopting folding screens.

It is understood that the first color resist layer 201 functions to pass light of a first color and filter out light other than the first color, the second color resist layer 202 functions to pass light of a second color and filter out light other than the second color, and the third color resist layer 203 functions to pass light of a third color and filter out light other than the third color. Wherein the first color, the second color and the third color are three different colors. In one particular example, the first color is one of red, green, and blue; the second color is one of red, green, and blue and is different from the first color; the third color is one of red, green, and blue and is different from the first color and the second color. For example, the first color is red, the second color is green, and the third color is blue; as another example, the first color is blue, the second color is green, the third color is red, and so on. It is also understood that the opaque region 220 in the present embodiment does not mean that all colors of light are opaque, but light of the first color, light of the second color, and light of the third color are opaque.

In some embodiments, first color resist layer 201, second color resist layer 202, and third color resist layer 203 are stacked in opaque region 220. Therefore, the opaque region 220 is black or close to black, so that the opaque region 220 can not only avoid the problem of color mixing between sub-pixels, but also absorb ambient light, thereby improving the problem that the viewing effect of the display panel 10 is affected by reflecting the ambient light.

In some embodiments, the opaque region 220 of the color barrier layer set 200 has a film thickness greater than that of the transparent region 210. That is, the thickness of the single-color photoresist layer in the transparent region 210 is smaller than the thickness of the laminated film of the first color photoresist layer 201, the second color photoresist layer 202 and the third color photoresist layer 203 in the opaque region 220. That is, the thickness of the monochromatic color resist of the light-transmitting region 210 is not set excessively large.

In some embodiments, the display panel 10 further includes a light-condensing layer located on a side of the color resist layer group 200 away from the substrate 100, the light-condensing layer includes a plurality of lens structures 300 correspondingly disposed on the light-transmitting regions 210, and the lens structures 300 are disposed on the light-transmitting regions 210 and abut against the light-blocking regions 220 of the color resist layer group 200.

The opaque region 220 of the color resist group 200 has a film thickness greater than that of the transparent region 210, so that the opaque region 220 is raised. In this embodiment, the display panel 10 further includes a light-condensing layer, where the light-condensing layer includes a plurality of lens structures 300 disposed in the light-transmitting region 210 in a one-to-one correspondence, and the lens structures 300 are used to converge the light emitted by the sub-pixels, so as to improve the light extraction rate. Each lens structure 300 is correspondingly disposed on one transparent region 210 and abuts against the opaque region 220, that is, the protrusion formed by the opaque region 220 serves as a barrier separating the lens structures 300, and the lens structures 300 are in contact with the opaque region 220. In some display panels in the related art, a groove is first formed on a corresponding film (mostly, an insulating protective layer) by using a patterning technology, and then a lens structure is formed in the groove. In the embodiment of the present invention, the protrusions formed at the opaque region 220 are used as the retaining walls, and the lens structure is formed between the retaining walls, so that the process of forming the grooves on the corresponding film layer can be omitted, the process of the display panel 10 is further simplified, and the front light-emitting efficiency of the display panel 10 is improved while the cost is saved.

In addition, in the related art, in a manner of forming a groove on an insulating protection layer and then forming a lens structure in the groove, the inventor has found that a problem of mutual solubility may sometimes occur between a material for forming the lens structure and a material for forming the insulating protection layer, and once the two materials are mutually soluble, the manufacturing accuracy of the lens structure may be reduced, thereby affecting the light condensing performance of the light condensing layer. In the embodiment of the present application, the lens structure 300 is disposed on the light-transmitting region 210 of the color barrier layer group 200, so that the material of the lens structure 300 is isolated from the insulating protective layer and contacts with the insulating protective layer, that is, the material of the lens structure 300 does not contact with the insulating protective layer, thereby avoiding the mutual dissolution risk between the material of the lens structure and the material of the insulating protective layer. In addition, the inventors repeatedly verify that there is no mutual solubility between the lens structure 300 and the color barrier layer set 200, so that the yield of the display panel 10 is higher.

In some embodiments, the refractive index of the lens structure 300 is greater than the refractive index of the opaque region 220. Thus, at the location where the lens structure 300 abuts the opaque region 200, an optical interface is formed for separating the optically denser medium from the optically thinner medium. At a large viewing angle, when the light emitted from the light emitting element 120 passes through the light transmitting region 210 and reaches the optical interface, total reflection occurs, so that more light can be emitted, which is beneficial to further improving the light extraction rate.

In some embodiments, as shown in fig. 2, the lens structure 300 includes a middle portion and an edge portion surrounding the middle portion, the middle portion having a uniform thickness, the edge portion having a thickness that decreases continuously in a direction from the middle portion toward the edge portion.

Because the optical path of the light emitted by the light emitting element 120 is short under the front viewing angle, the attenuation degree is small, the optical path of the light emitted by the light emitting element 120 is large under a large viewing angle, and the attenuation degree is large, the light emitted under the front viewing angle is emitted through the thick middle part of the lens structure 300, the light emitted under the large viewing angle is emitted through the thin edge part of the lens structure 300, the light emitting brightness under the front viewing angle and the light emitting brightness under the large viewing angle can be kept consistent, the display light emitting brightness observed by human eyes under the front viewing angle and the large viewing angle is kept consistent, and the display quality of the display panel is improved.

In some embodiments, the plurality of light-transmitting regions 210 includes a plurality of first color light-transmitting regions, a plurality of second color light-transmitting regions, and a plurality of third color light-transmitting regions. The first color transparent area is correspondingly provided with a first color resistance layer 201, the second color transparent area is correspondingly provided with a second color resistance layer 202, and the third color transparent area is correspondingly provided with a third color resistance layer 203.

In the related art, the display panel 10 includes a plurality of pixel units, each of which includes a first color sub-pixel for emitting light of a first color, a second color sub-pixel for emitting light of a second color, and a third color sub-pixel for emitting light of a third color. The light-transmitting regions 210 in the embodiment of the present application have a one-to-one correspondence relationship with the sub-pixels of the display panel 10. Specifically, along the thickness direction of the display panel 10, the first color transparent area is aligned with the first color sub-pixel, the second color transparent area is aligned with the second color sub-pixel, and the third color transparent area is aligned with the third color sub-pixel. Thus, the reflection prevention and brightness enhancement are performed for each sub-pixel through each light transmission region 210 of the color resist layer group 200.

In some embodiments, the first color resist layer 201 in the first color transparent region and the first color resist layer 201 in the opaque region 220 abutting the first color transparent region are a unitary structure. With such an arrangement, the first color resist layer 201 in the first color transparent region and the first color resist layer 201 in the opaque region 220 abutting against the first color transparent region can be continuously manufactured.

In some embodiments, the second color resist layer 202 in the second color transparent region and the second color resist layer 202 in the opaque region 220 abutting the second color transparent region are a unitary structure. With this arrangement, the second color resist layer 202 in the second color transparent region and the second color resist layer 202 in the opaque region 220 abutting against the second color transparent region can be continuously manufactured.

In some embodiments, the third color resist layer 203 in the third color transparent region and the third color resist layer 203 in the opaque region 220 connected to the third color transparent region are a single structure. This arrangement allows the third color resist 203 in the transparent region of the third color and the third color resist 203 in the opaque region 220 connected to the transparent region of the third color to be continuously manufactured.

It is understood that the color resist layer set 200 can be manufactured by three yellow light processes. It is assumed that the film layers of the opaque region 220 are stacked in the order of the first color resist layer 201, the second color resist layer 202, and the third color resist layer 203 from the side close to the substrate 100 to the side away from the substrate 100. Then, all of the first color resist layer 201 may be made, then all of the second color resist layer 202 may be made, and finally all of the third color resist layer 203 may be made. Therefore, the manufacturing process is simplified to the greatest extent.

In some embodiments, the display panel 10 further includes a pixel defining layer 110, the pixel defining layer 110 is provided with a plurality of pixel openings 111, and the plurality of light emitting elements 120 are disposed corresponding to the plurality of pixel openings 111. The light-transmitting area 210 is disposed opposite to the pixel opening 111 along the thickness direction of the display panel 10.

Each pixel opening 111 of the pixel defining layer 110 defines a sub-pixel region, and the light emitting element 120 disposed corresponding to one pixel opening 111 corresponds to one sub-pixel. In this embodiment, the light-transmitting regions 210 are disposed opposite to the pixel openings 111 in the thickness direction of the display panel 10, so that the light emitted from the light-emitting element 120 can be emitted through the corresponding light-transmitting regions 210.

It will be appreciated that the color of the light emitted by the light emitting element 120 defines the color of the sub-pixel. In each light emitting element 120 of the display layer group, one of the light emitting elements 120 emits light of the first color, the sub-pixels corresponding to the part of the light emitting elements 120 are sub-pixels of the first color, another part of the light emitting elements 120 emit light of the second color, the sub-pixels corresponding to the part of the light emitting elements 120 are sub-pixels of the second color, another part of the light emitting elements 120 emit light of the third color, and the sub-pixels corresponding to the part of the light emitting elements 120 are sub-pixels of the third color. In the embodiment of the present application, the light-transmitting regions 210 and the sub-pixels need to be in a one-to-one correspondence relationship. Specifically, along the thickness direction of the display panel 10, the first color transparent area is aligned with the first color sub-pixel, the second color transparent area is aligned with the second color sub-pixel, and the third color transparent area is aligned with the third color sub-pixel. Thus, the reflection prevention and brightness enhancement are performed for each sub-pixel through each light transmission region 210 of the color resist layer group 200.

In some embodiments, as shown in fig. 1, the display panel 10 further includes an encapsulation layer 130, the encapsulation layer 130 covers the display layer group, and the color-resist layer group 200 is located on a side of the encapsulation layer 130 facing away from the substrate 100. Since the display layer assembly is sensitive to moisture, oxygen, and other environments, if the display layer assembly is exposed to moisture or oxygen, the performance of the display panel 10 may be drastically degraded or damaged. Therefore, the display panel 10 is provided with the encapsulation layer 130 covering the display layer group, and the encapsulation layer 130 can block water vapor and air, so that the performance reliability of the display panel 10 can be ensured. In addition, the color-resisting layer group 200 does not have the requirement of isolating moisture and oxygen, and therefore can be located on the side of the packaging layer 130 away from the substrate 100.

In some embodiments, the encapsulation layer 130 includes a first inorganic encapsulation layer 131, an organic encapsulation layer 132, and a second inorganic encapsulation layer 133 in a stacked arrangement. The organic encapsulation layer 132 is used to provide flexibility, and the first inorganic encapsulation layer 131 and the second inorganic encapsulation layer 133 serve to isolate water and oxygen.

In some embodiments, as shown in fig. 1, the color-resist layer group 200 is disposed on a side of the encapsulation layer 130 facing away from the substrate 100, i.e., the color-resist layer group 200 is disposed on the encapsulation layer 130.

In some other embodiments, as shown in fig. 3, the display panel 10 further includes a touch layer group disposed on a side of the encapsulation layer 130 facing away from the substrate 100, and the color resistance layer group 200 is disposed on a side of the touch layer group facing away from the encapsulation layer. That is, for the display panel 10 having the touch function, the color resistance layer group 200 may be disposed on the touch layer group.

Further, the touch layer group includes a touch functional layer 140 disposed on the package layer 130 and an insulating protection layer 150 disposed on a side of the touch functional layer 140 away from the package layer 130, and the color barrier layer group 200 is disposed on a side of the insulating protection layer 150 away from the package layer 130. That is, the color resistance layer group 200 may be specifically disposed on the insulating protection layer 150 of the touch layer group.

The embodiment of the second aspect of the present application proposes a manufacturing method of a display panel 10, the manufacturing method including:

providing a substrate 100 and a display layer group, wherein the display layer group is arranged on one side of the substrate 100 and comprises a plurality of light-emitting elements 120;

forming a color resistance layer group 200, wherein the color resistance layer group 200 is located on one side of the display layer group, which is far away from the substrate 100, and the color resistance layer group 200 comprises a plurality of first color resistance layers 201, a plurality of second color resistance layers 202 and a plurality of third color resistance layers 203, wherein the color resistance layer group 200 is provided with a plurality of light-transmitting regions 210 which are arranged in one-to-one correspondence with the plurality of light-emitting elements 120 and light-proof regions 220 which are arranged between the adjacent light-transmitting regions 210; in the opaque region 220, at least two of the first color resist layer 201, the second color resist layer 202 and the third color resist layer 203 are stacked, and the transparent region 210 is provided with a single color resist layer, which is the first color resist layer 201, the second color resist layer 202 or the third color resist layer 203.

In the display panel 10 manufactured by the manufacturing method in the embodiment of the present application, the color resist layer group 200 includes the light-transmitting regions 210 and the light-impermeable regions 220 disposed between the adjacent light-transmitting regions 210, wherein the light-transmitting regions 210 are provided with the single-color resist layers, and at least two of the light-impermeable regions 220, the first color resist layers 201, the second color resist layers 202, and the third color resist layers 203 are stacked. That is, the opaque regions 220 of the color resist layer group 200 are formed by stacking at least two color resist layers, and the opaque regions 220 can be used to separate the sub-pixels of the display panel 10, so that the colors of the sub-pixels do not interfere with each other, and color mixing between the sub-pixels is avoided. In the display panel 10 of the present embodiment, the opaque region 220 of the color barrier layer 200 can replace the black matrix, i.e., no additional black matrix needs to be fabricated. Therefore, when the COE structure in the display panel 10 is manufactured, the process of the black matrix can be omitted, so that the manufacturing process of the COE structure is simplified, and the production cost of the display panel 10 is reduced.

In some embodiments, the method for manufacturing the display panel 10 further includes:

a light-focusing layer is formed on the color resist group 200, and the light-focusing layer includes a plurality of lens structures 300 corresponding to the light-transmitting regions 210 one by one, wherein the thickness of the light-transmitting regions 220 of the color resist group 200 is greater than that of the light-transmitting regions 210, and the light-transmitting structures 300 are disposed on the light-transmitting regions 210 and abut against the light-transmitting regions 220.

In this embodiment, the opaque region 220 of the color resist group 200 has a film thickness greater than that of the transparent region 210, so that the opaque region 220 is raised. In this embodiment, the method for manufacturing the display panel 10 further includes forming a light condensing layer on the color resist layer group 200, where the light condensing layer includes a plurality of lens structures 300 corresponding to the light transmitting areas 210 one by one. The lens structure 300 is used to converge the light emitted by the sub-pixels, thereby improving the light extraction efficiency. Each lens structure 300 is correspondingly disposed on one of the transparent regions 210 and abuts against the opaque region 220, that is, the protrusion formed by the opaque region 220 serves as a retaining wall for separating the lens structures 300. Some display panels 10 in the related art first use a patterning technique to fabricate a groove on a corresponding film layer, and then fill the groove with a high refractive index material to form a lens structure. In the embodiment of the present invention, the protrusions formed at the opaque regions 220 are used as the retaining walls, and the light-condensing layer 300 is manufactured by filling the high refractive index material between the retaining walls, so that the process of manufacturing the grooves on the corresponding film layer can be omitted, the process of the display panel 10 is further simplified, and the front light-emitting rate of the display panel 10 is improved while the cost is saved.

Embodiments of the third aspect of the present application propose a display device comprising the display panel 10 of any of the embodiments of the first aspect described above.

According to the display device in the embodiment of the application, the color resist layer group 200 of the display panel 10 includes the transparent regions 210 and the opaque regions 220 disposed between the adjacent transparent regions 210, wherein the transparent regions 210 are disposed with the single color resist layers, and at least two of the first color resist layer 201, the second color resist layer 202 and the third color resist layer 203 are stacked in the opaque regions 220. That is, the opaque regions 220 of the color resist layer group 200 are formed by stacking at least two color resist layers, and the opaque regions 220 can be used to separate the sub-pixels of the display panel 10, so that the colors of the sub-pixels do not interfere with each other, and color mixing between the sub-pixels is avoided. In the display panel 10 of the present embodiment, the opaque region 220 of the color barrier layer 200 can replace the black matrix, i.e., no additional black matrix needs to be fabricated. Therefore, when the COE structure in the display panel 10 is manufactured, the process of the black matrix can be omitted, so that the manufacturing process of the COE structure is simplified, and the production cost of the display panel 10 is reduced.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present patent application shall be subject to the appended claims.

Claims

1. A display panel, comprising:

a substrate;

the display layer group is arranged on one side of the substrate and comprises a plurality of light-emitting elements; and

the color resistance layer group is positioned on one side, away from the substrate, of the display layer group and comprises a plurality of first color resistance layers, a plurality of second color resistance layers and a plurality of third color resistance layers;

the color resistance layer group is provided with a plurality of light-transmitting areas which are arranged corresponding to the light-emitting elements one by one and light-tight areas which are arranged between the adjacent light-transmitting areas; at least two of the first color resistance layer, the second color resistance layer and the third color resistance layer are arranged in the light-tight area in a stacked mode, the light-pervious area is provided with a single-color resistance layer, and the single-color resistance layer is the first color resistance layer or the second color resistance layer or the third color resistance layer.

2. The display panel according to claim 1, wherein the first color resist layer, the second color resist layer, and the third color resist layer are stacked in the opaque region.

3. The display panel of claim 1, wherein the color barrier layer set has a film thickness in the opaque region that is greater than a film thickness in the transparent region;

the display panel also comprises a light-condensing layer positioned on one side, away from the substrate, of the color resistance layer group, the light-condensing layer comprises a plurality of lens structures which are arranged in the light-transmitting area in a one-to-one correspondence mode, and the lens structures are arranged on the light-transmitting area and are abutted to the light-proof area of the color resistance layer group;

preferably, the refractive index of the lens structure is greater than the refractive index of the opaque region;

preferably, the lens structure includes a middle portion and an edge portion surrounding the middle portion, the thickness of the middle portion is uniformly set, and the thickness of the edge portion becomes continuously smaller toward the edge portion along the middle portion.

4. The display panel according to claim 1, wherein the plurality of light-transmitting regions include a plurality of first color light-transmitting regions, a plurality of second color light-transmitting regions, and a plurality of third color light-transmitting regions; the first color light-transmitting area is correspondingly provided with the first color resistance layer, the second color light-transmitting area is correspondingly provided with the second color resistance layer, and the third color light-transmitting area is correspondingly provided with the third color resistance layer;

preferably, the first color resist layer in the first color light-transmitting area and the first color resist layer in the opaque area abutting against the first color light-transmitting area are of an integral structure; the second color resistance layer in the second color light-transmitting area and the second color resistance layer in the light-tight area abutting against the second color light-transmitting area are of an integrated structure; the third color resist layer in the third color light-transmitting area and the third color resist layer in the opaque area connected with the third color light-transmitting area are of an integrated structure.

5. The display panel according to claim 1, further comprising a pixel defining layer provided with a plurality of pixel openings, the plurality of light emitting elements being provided in one-to-one correspondence with the plurality of pixel openings;

6. The display panel according to claim 1, wherein the display panel further comprises an encapsulation layer covering the group of display layers;

the color resistance layer group is positioned on one side of the packaging layer, which is far away from the substrate;

preferably, the encapsulation layer comprises a first inorganic encapsulation layer, an organic encapsulation layer and a second inorganic encapsulation layer which are stacked.

7. The display panel according to claim 6, wherein the color barrier layer group is arranged on a side of the encapsulation layer facing away from the substrate; or

The display panel further comprises a touch layer group arranged on one side, away from the substrate, of the packaging layer, and the color resistance layer group is arranged on one side, away from the packaging layer, of the touch layer group;

preferably, the touch control layer group comprises a touch control functional layer arranged on the packaging layer and an insulating protection layer arranged on one side, deviating from the packaging layer, of the touch control functional layer, and the color resistance layer group is arranged on one side, deviating from the packaging layer, of the insulating protection layer.

8. A method for manufacturing a display panel is characterized by comprising the following steps:

9. The method of manufacturing of claim 8, further comprising:

form the spotlight layer on the color resistance layer group, the spotlight layer includes that a plurality of one-to-one are located the regional lens structure of printing opacity, wherein, the regional rete thickness of opaque of color resistance layer group is greater than the regional rete thickness of printing opacity, the lens structure sets up on the printing opacity region and with regional looks butt of opaque.

10. A display device characterized by comprising the display panel according to any one of claims 1 to 7.