CN115064650A

CN115064650A - Display panel and display device

Info

Publication number: CN115064650A
Application number: CN202210683058.5A
Authority: CN
Inventors: 霍堡垒; 王杨; 周强; 高飞飞; 牟鑫
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: 2022-06-14
Filing date: 2022-06-14
Publication date: 2022-09-16

Abstract

The application discloses display panel and display device includes: the light-emitting device comprises a substrate, a light-emitting device layer and an encapsulation layer which are arranged in a stacked mode, wherein the light-emitting device layer comprises a pixel defining layer used for defining a plurality of sub-pixels; the anti-reflection layer is positioned on one side, close to the packaging layer, of the light-emitting device layer, a plurality of first opening areas are defined on the substrate by the anti-reflection layer, the first opening areas and the sub-pixels are arranged in a one-to-one correspondence mode, and the orthographic projection of the pixel defining layer on the substrate is partially overlapped with the first opening areas. This application is through adopting the mode of setting up of antireflection layer and black matrix layer different positions, can satisfy the luminance in different regions, the demand of transmissivity, can effectively improve organic light emitting display panel's colour separation phenomenon and colour cast phenomenon to reduce the reflectivity of external light, improve the display quality and the contrast of organic light emitting display panel when external light shines, can solve the temperature rise effect that adopts PNL to lead to among the prior art, improve light emitting device's life-span.

Description

Display panel and display device

Technical Field

The present application relates generally to the field of display technology, and more particularly, to a display panel and a display device.

Background

With the rapid development of the 5G technology and the large background of the new concept of carbon neutralization, new energy automobiles will meet a new outbreak period. At present, in order to embody science and technology, characteristics such as cool are dazzled, more and more car enterprises choose to carry out the design of suspending with the display screen. However, the floating design brings some negative effects, for example, the picture displayed by the display screen is projected onto the windshield (more obvious at night) due to the fact that the picture is not shielded by the shielding object, which undoubtedly affects the vision of the driver, and greatly increases the driving safety.

Although the conventional LCF (Light Control Film) can effectively change this phenomenon, it needs customized fabrication, which greatly increases the development cost; meanwhile, the conventional LCF has a low transmittance, which seriously affects the lifetime of the display panel.

Disclosure of Invention

In view of the above-mentioned drawbacks and deficiencies of the prior art, it is desirable to provide a display panel and a display device that can improve the color separation phenomenon and the color shift phenomenon while increasing the transmittance.

In a first aspect, the present application provides a display panel comprising:

the light-emitting device comprises a substrate, a light-emitting device layer and an encapsulation layer which are arranged in a stacked mode, wherein the light-emitting device layer comprises a pixel defining layer used for defining a plurality of sub-pixels;

the anti-reflection layer is positioned on one side, close to the packaging layer, of the light-emitting device layer, a plurality of first opening areas are defined on the substrate by the anti-reflection layer, the first opening areas and the sub-pixels are arranged in a one-to-one correspondence mode, and the orthographic projection of the pixel defining layer on the substrate is partially overlapped with the first opening areas.

Optionally, the substrate includes a first display area, the first display area includes a plurality of color filters located on one side of the encapsulation layer away from the substrate and a protection layer located on one side of the color filters away from the substrate, and the protection layer is disposed between adjacent color filters.

Optionally, the substrate includes a second display region, where the second display region includes a plurality of color filters and a black matrix layer located on a side of the encapsulation layer away from the substrate, and a protection layer located on a side of the color filters and the black matrix layer away from the substrate; wherein the content of the first and second substances,

the black matrix layer defines a plurality of second opening areas on the substrate, and the orthographic projection of the black matrix layer on the substrate is partially overlapped with the orthographic projection of the antireflection layer on the substrate;

the orthographic projection of the color filter on the substrate is positioned in the second opening area.

Optionally, there is a partial overlap between the orthographic projection of the color filter on the substrate and the orthographic projection of the sub-pixel on the substrate.

Optionally, the refractive index of the protective layer is greater than the refractive index of the color filter.

Optionally, the second display area includes a first partition and/or a second partition, the transmittance of the first partition is greater than that of the second partition, and the distribution density of the orthographic projection of the color filter on the first partition is greater than that of the orthographic projection of the color filter on the corresponding second partition.

Optionally, an orthographic projection area of the black matrix layer on the first partition is smaller than an orthographic projection area of the black matrix layer on the second partition.

Optionally, the light-shielding structure further comprises a plurality of light-shielding retaining walls arranged on one side, far away from the substrate, of the antireflection layer, and the orthographic projection of the light-shielding retaining walls on the substrate is located in the orthographic projection range of the antireflection layer on the substrate.

Optionally, the light-shielding retaining wall comprises a first shielding wall extending along a first direction and/or a second shielding wall extending along a second direction, wherein,

the length of the first blocking wall in the first direction is less than or equal to the length of the sub-pixel in the first direction;

the length of the second blocking wall in the second direction is smaller than or equal to the length of the sub-pixel in the second direction.

Optionally, the sub-pixel includes a first electrode, an organic light emitting layer, and a second electrode disposed in a direction away from the substrate, the second electrode extends from the sub-pixel to a side of the pixel defining layer away from the substrate, the anti-reflective layer is disposed on a side of the second electrode close to the encapsulation layer, and the anti-reflective layer is made of a black conductive material.

In a second aspect, the present application provides a display device comprising a display panel as described in any of the above.

The technical scheme provided by the embodiment of the application can have the following beneficial effects:

the display panel that this application embodiment provided, through the mode that sets up that adopts antireflection coating and black matrix layer different positions, can satisfy the luminance in different regions, the demand of transmissivity, can effectively improve organic light emitting display panel's colour separation phenomenon and colour cast phenomenon to reduce the reflectivity of external light, improve the display quality and the contrast of organic light emitting display panel when external light shines, can solve the temperature rise effect that adopts PNL to lead to among the prior art, improve light emitting device's life-span.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

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

fig. 2 is a schematic structural diagram of a first display area according to an embodiment of the present application;

fig. 3 is a graph illustrating transmittance of a display panel at different viewing angles according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a second display area according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a first partition provided in an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a second partition according to an embodiment of the present application;

fig. 7 is a schematic diagram illustrating positions of different display areas on a display panel according to an embodiment of the present application;

fig. 8 is a schematic view of a display mode of a single display screen of a dashboard display screen according to an embodiment of the present application;

fig. 9 is a schematic view of a display mode of a center control display screen or a copilot display screen according to an embodiment of the present application;

FIG. 10 is a schematic diagram of a display mode of a layout screenshot provided in an embodiment of the present application;

fig. 11 is a schematic diagram illustrating a correspondence between sizes of a pixel unit according to an embodiment of the present disclosure;

FIG. 12 is a schematic view of a first blocking wall according to an embodiment of the present disclosure;

FIG. 13 is a schematic view of a second baffle wall according to an embodiment of the present disclosure;

fig. 14 is a schematic cross-sectional view of a light-shielding retaining wall according to an embodiment of the present application.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

In the prior art, in order to prevent the screen from reflecting light, an OLED (organic light emitting Diode) display panel needs to have a polarizer on the light emitting side, and the polarizer adopts the principle of polarized light, which can effectively reduce the reflection intensity of the external ambient light on the screen, but the thickness of the polarizer is relatively large.

However, since the transmittance of the color film layer is greater than that of the polarizer, more external ambient light enters the display panel, and the external ambient light is reflected inside the display panel, and under the influence of each layer in the display panel, the reflected external ambient light is prone to color separation when being emitted from the light emitting surface of the display panel, thereby affecting the display effect of the display panel.

Referring to fig. 1 in detail, the present application provides a display panel, including:

the light-emitting device comprises a substrate 1, a light-emitting device layer 2 and an encapsulation layer 3 which are arranged in a stacked mode, wherein the light-emitting device layer 2 comprises a pixel defining layer 4 for defining a plurality of sub-pixels;

an antireflection layer 5 disposed on a side of the light emitting device layer 2 close to the encapsulation layer 3, wherein the antireflection layer 5 defines a plurality of first opening regions T1 on the substrate 1, the first opening regions T1 are disposed in one-to-one correspondence with the sub-pixels, and an orthographic projection of the pixel defining layer 4 on the substrate 1 partially overlaps with the first opening regions T1.

The base can be a rigid substrate 1 or a flexible substrate 1, wherein the rigid substrate 1 can be one or more of glass, metal sheet, but is not limited to; the flexible substrate 1 may be, but is not limited to, one or more of polyethylene terephthalate, ethylene terephthalate, polyetheretherketone, polystyrene, polycarbonate, polyarylate, polyimide, polyvinyl chloride, polyethylene, textile fibers.

The light emitting device layer 2 may include: an OLED device or a Quantum Dot Light Emitting diode (QLED) device, etc., which is not limited in this embodiment. OLED devices are described in this application as examples.

The pixel defining layer 4 is used for preventing the color cross-color and color mixing of two adjacent OLED elements. The pixel defining layer 4 may be made of a resin material, which is not limited in this embodiment.

The shape of the sub-pixels is rectangular and the sub-pixels are arranged in rows and columns, but the present invention is not limited thereto, and those skilled in the art can set the shape and arrangement of the sub-pixels according to the actual situation. For example, the shape of the sub-pixel may be "L" shape, diamond shape, etc., and the arrangement may be in delta shape, etc. Wherein the light emitting color of the light emitting unit is related to the material of the light emitting block, and the light emitting layer may include a red light emitting block R, a green light emitting block G, a blue light emitting block, a yellow light emitting block, a white light emitting block, and the like. Here, the material of the light emitting layer is not limited.

In this embodiment, the sub-pixel includes a first electrode 11, an organic light emitting layer 13, and a second electrode 12 disposed in a direction away from the substrate 1. The organic light-emitting layer 13 may include only a light-emitting layer, or may include film layers such as a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, and an electron injection layer. The first electrode 11 may be an anode, and the first electrode 11 may be a strip electrode or a block electrode; the second electrode 12 may be a cathode, and the second electrode 12 may be a planar electrode. The second electrode 12 extends from the sub-pixel to the side of the pixel defining layer 4 remote from the substrate 1. It is to be understood that the specific material of the second electrode 12 is not particularly limited, and those skilled in the art can design the material according to the common material of the cathode in the OLED element.

The encapsulating layer 3 in this embodiment can not only isolate the light emitting device layer 2 from the outside, and avoid water and oxygen from invading the organic light emitting layer 13 in the light emitting device layer 2 of the display panel, which affects the service life of the display panel, but also the outer surface of the encapsulating layer 3 is flat, which is more beneficial to the display effect of the display panel.

The encapsulation layer 3 may be a thin film encapsulation structure, and includes a first inorganic encapsulation layer 3, an organic encapsulation layer 3, and a second inorganic encapsulation layer 3, and certainly, the encapsulation layer 3 may also include only the organic encapsulation layer 3 or the inorganic encapsulation layer 3, and the specific number of layers of the organic encapsulation layer 3 and the inorganic encapsulation layer 3 may be one layer or multiple layers, which is not limited in this embodiment of the present application.

In the embodiment of the present application, the antireflection layer 5 is disposed between the pixel defining layer 4 and the encapsulation layer 3, and the material of the antireflection layer 5 may be an opaque or translucent material. The external ambient light incident on the black matrix layer 8 can be absorbed by the antireflection layer 5, so that the external ambient light incident on the anode layer and the driving backplane is further reduced, and the external ambient light emitted from the light emitting surface of the display panel is correspondingly reduced, thereby further improving the color separation phenomenon of the display panel.

In the specific setting, the length/width/thickness of the anti-reflective layer 5 needs to be determined according to different PPIs and customer requirements, and on the basis of ensuring that the color separation phenomenon and the color shift phenomenon of the organic light emitting display panel can be improved, the organic light emitting element should be ensured to have appropriate transmittance, and the display effect of the organic light emitting display panel is ensured. The present application is not limited to the above two conditions, and those skilled in the art can design the present application according to practical situations.

In an embodiment of the present application, the antireflection layer 5 is disposed on a side of the second electrode 12 close to the encapsulation layer 3, and the material of the antireflection layer 5 is a black conductive material.

For example, the material of the antireflection layer 5 may be a translucent or opaque conductive material such as molybdenum oxide MoOx. The antireflection layer 5 is arranged on the cathode, so that the effect of assisting the cathode is achieved while reflection is reduced, and finally the effects of reducing reflection, reducing power consumption, reducing temperature and improving surface uniformity are achieved.

In the embodiment of the present application, the phrase "the first opening regions T1 are disposed in one-to-one correspondence with the sub-pixels" means that one first opening region T1 corresponds to one sub-pixel, and one sub-pixel corresponds to one first opening region T1. The coverage area of the first opening region T1 has a direct relationship with transmittance, and in order to increase the pixel transmittance, the coverage area of the first opening region T1 may be increased, and in order to reduce the color separation phenomenon, the coverage area of the first opening region T1 may be decreased.

It is understood that the present application is not limited to the embodiment in which the orthographic projection of the antireflection layer 5 on the substrate 1 overlaps with the orthographic projection of the pixel defining layer 4 on the substrate 1, and the present application is not limited thereto, and the present application is specifically adjusted according to the transmittance and the like. Preferably, the orthographic projection of the antireflection layer 5 on the substrate 1 is located within the orthographic projection range of the pixel defining layer 4 on the substrate 1. Therefore, the brightness of the display panel under a large viewing angle is larger, the viewing angle range of the display panel is ensured to be wider, and a side observer can observe a clear image to be displayed. Illustratively, the antireflection layer 5 has a difference of ± 5 μm in the length and width directions with respect to PDL; the thickness dimension is as follows: 0.1-1 μm.

In some embodiments of the present application, as shown in fig. 2, the substrate 1 includes a first display area a +, and the first display area a + includes a plurality of color filters 7 located on a side of the encapsulation layer 3 away from the substrate 1 and a protection layer 9 located on a side of the color filters 7 away from the substrate 1, and the protection layer 9 is disposed between adjacent color filters 7.

In this embodiment, the display region of the display panel has a plurality of sub-pixels, and when each sub-pixel includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel, the color filter 7 includes: a red filter R, a green filter G and a blue filter B. Wherein, there is a partial overlap between the orthographic projection of the color filter 7 on the substrate 1 and the orthographic projection of the sub-pixel on the substrate 1. On one hand, the color filter 7 can filter the emergent light, so that the color purity of the emergent light is improved; on the other hand, the color filter 7 can filter external light, and can reduce ambient light entering the display panel, thereby reducing reflection of the display panel to the ambient light and improving user experience.

In the scheme of adopting the color filter 7 and the polaroid in the traditional scheme, the reflectivity is lower, but the integral black effect is good; in the scheme without BM in the color filter 7, the transmittance can be greatly improved, but at the same time, the reflectivity is extremely high, the reflection phenomenon is seriously increased, and the integral black effect is extremely poor, so that the reflection phenomenon is serious no matter what scheme in the conventional technology is adopted.

In the embodiment of the present application, the black matrix layer 8 of the COE in the prior art is removed, and an antireflection layer 5 is designed between the pixel defining layer 4 and the encapsulation layer 3, so as to achieve the functions of antireflection and antireflection. The transmittance and reflectance of the conventional scheme and the a + region of the present application are compared, see table 1. In addition, the transmittance of the display panel provided in the embodiment of the present application at different viewing angles is shown in fig. 3.

TABLE 1

	(Mode)	Transmittance of A + region	A + region reflectivity
				Conventional solutions	POL+LCF	33％(44％POL×75％LCF)	～23％
This application	COE + anti-reflective layer	＞90％	6％～9％

In other embodiments of the present application, as shown in fig. 4, the substrate 1 includes a second display area, and the second display area includes a plurality of color filters 7 and a black matrix layer 8 located on a side of the encapsulation layer 3 away from the substrate 1, and a protection layer 9 located on a side of the color filters 7 and the black matrix layer 8 away from the substrate 1.

In the embodiment of the present application, the color filter 7 and the black matrix layer 8 are located at the same height with the substrate 1 and are both disposed on the upper surface of the encapsulation layer 3. The black matrix layer 8 defines a plurality of second open areas T2 on the substrate 1, and there is a partial overlap between the orthographic projection of the black matrix layer 8 on the substrate 1 and the orthographic projection of the antireflection layer 5 on the substrate 1. The orthographic projection of the color filter 7 on the substrate 1 is located in the second opening area T2, that is, the black matrix layer 8 is disposed between the two adjacent color filters 7.

If the area of the orthographic projection of the black matrix layer 8 on the substrate 1 is larger than that of the antireflection layer 5 on the substrate 1, the transmittance of the organic light-emitting element can be remarkably reduced, and the display effect is affected, so that when the black matrix layer 8 is designed, on the basis of ensuring that the color separation phenomenon and the color shift phenomenon of the organic light-emitting display panel can be improved, the organic light-emitting element is ensured to have proper transmittance, and the display effect of the organic light-emitting display panel is ensured. With respect to specific values of the forward projection areas of the black matrix layer 8 and the antireflection layer 5, there is no particular limitation, and those skilled in the art can design the areas according to actual conditions on the basis of satisfying the two conditions described above.

According to the difference of required display panel's transmissivity, black matrix layer 8 is in orthographic projection area on the substrate 1 is different, and this application carries out further optimization to the setting of second display area, including first subregion A and second subregion B, optimizes the size of BM through the differentiation to reach the demand of the luminance (transmissivity) of two regions respectively.

Optionally, as shown in fig. 5 and fig. 6, the second display area includes a first area a and a second area B, a transmittance of the first area a is greater than a transmittance of the second area B, and a distribution density of an orthogonal projection of the color filter 7 on the first area a is greater than a distribution density of an orthogonal projection of the color filter 7 on the corresponding second area B.

In this embodiment, a first black matrix 81 corresponds to the first display area a +, and a second black matrix 82 corresponds to the second display area, wherein an area of an orthographic projection of the first black matrix 81 on the first area a is smaller than an area of an orthographic projection of the second black matrix 82 on the second area B.

It is understood that the application is not limited to the embodiment in which the orthographic projection of the black matrix layer 8 on the substrate 1 overlaps with the orthographic projection of the antireflection layer 5 on the substrate 1, and the application is not limited thereto, and the application is specifically adjusted according to the transmittance and the like.

Preferably, in the first partition a, an orthogonal projection of the first black matrix 81 on the substrate 1 is located within an orthogonal projection range of the antireflection layer 5 on the substrate 1; the orthographic projection of the sub-pixels on the substrate 1 is positioned in the orthographic projection range of the color filter 7 on the substrate 1. Therefore, the transmittance of the display panel can be increased, the brightness of the display panel under a large viewing angle is larger, the viewing angle range of the display panel is wider, and a side observer can observe a clear image to be displayed. Illustratively, in the first partition a, the black matrix layer 8 has a difference of ± 5 μm in the length and width directions with respect to PDL; the thickness dimension is as follows: 100-300 μm.

Preferably, in the second partition B, the orthographic projection of the antireflection layer 5 on the substrate 1 is located within the orthographic projection range of the second black matrix 82 on the substrate 1; the orthographic projection of the color filter 7 on the substrate 1 is positioned in the orthographic projection range of the sub-pixels on the substrate 1. Therefore, the color separation phenomenon and the color cast phenomenon of the organic light-emitting display panel can be improved, and the display effect is improved. Illustratively, in the second partition B, the second black matrix 82 differs by 50 μm in the length and width directions with respect to PDL; the thickness dimension is as follows: 100-300 μm.

In various embodiments of the present application, the refractive index of the protective layer 9 is greater than the refractive index of the color filter 7. The refractive index difference between the high-refractive-index protective layer 9 and the low-refractive-index CF generates a light-condensing effect to change the propagation path of light. While a portion of the ambient light refracted by the CF portion may be absorbed by the antireflection layer 5, the portion of the ambient light reflected by the elements in the display panel and transmitted out of the display panel is reduced, which may reduce color separation due to reflection of the ambient light, ultimately achieving improved color separation.

Therefore, the light emitting side of the film packaging structure is not required to be provided with a polaroid for preventing ambient light from being reflected, the light emitting rate of the display panel can be improved, the power consumption of the display panel is reduced, and the service life of the display panel is prolonged.

The embodiment of the application provides three setting modes of the display area, and the scheme of selecting the first display area A +, the first partition A and the second partition B according to requirements during application can be set to one or more modes on the display panel. The requirements of the customer on the brightness of the display area for different areas of a display panel are shown in table 2. The position corresponding to the first display area a + is shown in fig. 7 (I), the position corresponding to the first partition a is shown in fig. 7 (II), and the position corresponding to the second partition B is shown in fig. 7 (III).

TABLE 2

Region(s)	Position of	Brightness requirement (nit)	A transmittance Tr.
				A + region	H+/－10°，V+8/－4°	＞800nit	Tr.＝75％(＞1066nit)
Zone A	H+/－40°，V+20/－10°	450nit	Tr.＝46％(490nit)
				Zone B	H+/－50°，V+20/－10°	300nit	Tr.＝46％(490nit)

It should be noted that, in the embodiment of the present application, a display mode of a single display screen or a layout of a combined screen may be adopted. Fig. 8 shows a single display mode of the dashboard display 10, and fig. 9 shows a single display mode of the center control display 20 or the copilot display 30, and different display schemes can be adopted in different display areas on the same display screen. Fig. 10 shows a through design of the dashboard display 10, the central control display 20 and the copilot display 30, wherein different display schemes can be used in different display areas.

In the embodiment of the present application, the display panel includes a plurality of pixel units arranged in an array along the first direction X and the second direction Y, each of the pixel units includes a plurality of sub-pixels, and the plurality of sub-pixels may be RGB sub-pixels (i.e., a red sub-pixel, a green sub-pixel, and a blue sub-pixel); the shape of the pixel unit may be rectangular; specifically, the stripe shape of the first sub-pixel 50 may be a rectangle; the stripe shape of the second sub-pixel 60 may be a rectangle; the stripe shape of the third subpixel 70 may be a rectangle.

As shown in fig. 11, in each pixel unit, a first sub-pixel 50 and a second sub-pixel 60 are arranged side by side in a first direction X, and the first sub-pixel 50 and a third sub-pixel 70 are arranged side by side in a second direction Y, wherein a width of the first sub-pixel 50 in the second direction Y, a width of the second sub-pixel 60 in the second direction Y, and a width of the third sub-pixel 70 in the second direction Y are the same, and a distance between opposite far sides of the first sub-pixel 50 and the second sub-pixel 60 is the same as a length of the third sub-pixel 70 in the first direction X.

It should be noted that the position and the area ratio of the sub-pixels included in each pixel unit can be adjusted accordingly according to the actual display effect and the functional requirements of the display screen. The first sub-pixel 50 is a red sub-pixel; the second subpixel 60 is a green subpixel; the third sub-pixel 70 is a blue sub-pixel. Therefore, the brightness of the blue sub-pixel under a large visual angle can be ensured to be large enough, the brightness of the red and/or green sub-pixels under the large visual angle is weakened to a certain extent, the problem that the color of the display panel is yellow under the large visual angle is improved, and the color deviation of the large visual angle is closer to the white balance effect. The above-mentioned high luminance at large viewing angles and insufficient luminance at large viewing angles are both based on the same design of the red, green and blue three-sub-pixels.

In this embodiment, the display panel further comprises a plurality of shading retaining walls, wherein the shading retaining walls are arranged on one side, away from the substrate 1, of the antireflection layer 5, and the orthographic projection of the shading retaining walls on the substrate 1 is located in the orthographic projection range of the antireflection layer 5 on the substrate 1.

As shown in fig. 12 to 14, the light-shielding walls include a first shielding wall extending along a first direction X and/or a second shielding wall extending along a second direction Y, wherein a length of the first shielding wall in the first direction X is less than or equal to a length of the sub-pixel in the first direction X; the length of the second blocking wall in the second direction Y is less than or equal to the length of the sub-pixel in the second direction Y.

In the embodiment of the present application, the first direction X and the second direction Y may be perpendicular to each other or close to perpendicular to each other, and the present application does not limit the specific directions of the first direction X and the second direction Y. In the present application, the arrangement direction of pixel columns is exemplarily taken as a first direction X, and the arrangement direction of pixel rows is taken as a second direction Y. Of course, in other embodiments, the first direction X and the second direction Y may be interchanged, the first direction X may be an arrangement direction of pixel rows, and the second direction Y may be an arrangement direction of pixel columns.

It can be understood that the first and second shielding walls can be selectively arranged according to different positions on the display panel, and the first and second shielding walls can also be arranged simultaneously.

The first shielding wall can be arranged on the same side (upper side or lower side) of the sub-pixel, for example, the first shielding wall is arranged along the short side of the sub-pixel to form an upper grating and a lower grating, so that the brightness of the upper direction is reduced, the projection of a display picture on a front windshield is reduced, the vision of a driver is further interfered, and the serious influence on the safety caused by the interference of the vision of the driver is prevented.

The second blocking wall can be disposed on the same side (left side or right side) of the sub-pixel, for example, along the long side of the sub-pixel, to form a left and right grating, so as to reduce the brightness in the left and right directions, and prevent the driver from being disturbed by the vision. The reason is that the brightness of some central control or copilot displays is required to be high, when the images are displayed, the brightness of the central control or copilot displays easily influences the eyes of the driver on the left side, and meanwhile, the central control or copilot displays are easily projected onto the door and window glass of the copilot on the right side, so that the driver is interfered to observe the rearview mirror, and the safety driving is seriously influenced.

In a specific configuration, the first blocking wall and the second blocking wall may be located between the encapsulation layer 3 and the pixel defining layer 4, for example, located on a side surface of the antireflection layer 5 away from the substrate 1, and the first blocking wall and the second blocking wall may be the same as the antireflection layer 5, and may also be other light-shielding materials, which is not limited in this application.

In addition, the length/width/thickness of the first and second shielding walls need to be determined according to different PPIs and customer requirements, and on the basis of ensuring that the brightness in the required direction can be reduced, the color separation phenomenon and the color shift phenomenon of the organic light emitting display panel are also ensured to be improved, and the display effect of the organic light emitting display panel is ensured. The present application is not limited to the above two conditions, and those skilled in the art can design the present application according to practical situations.

The application also provides a display device comprising the display panel. The display device may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, an instrument panel and the like. The display device can be implemented by referring to the above embodiments of the display panel, and repeated descriptions are omitted.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must be in a particular orientation, constructed or operated in a particular orientation, and is not to be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or 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 present invention, "a plurality" means two or more unless specifically defined otherwise.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Terms such as "disposed" and the like, appearing herein, may mean either that one element is directly attached to another element, or that one element is attached to another element through intervening elements. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.

The present invention has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the scope of the described embodiments. It will be appreciated by those skilled in the art that many variations and modifications may be made to the teachings of the invention, which fall within the scope of the invention as claimed.

Claims

1. A display panel, comprising:

2. The display panel according to claim 1, wherein the substrate includes a first display region, the first display region includes a plurality of color filters on a side of the encapsulation layer away from the substrate, and a protective layer on a side of the color filters away from the substrate, and the protective layer is disposed between adjacent color filters.

3. The display panel according to claim 1, wherein the substrate includes a second display region including a plurality of color filters and a black matrix layer on a side of the encapsulation layer away from the substrate and a protective layer on a side of the color filters and the black matrix layer away from the substrate; wherein the content of the first and second substances,

4. A display panel as claimed in claim 2 or 3 characterized in that there is a partial overlap of the orthographic projection of the color filters on the substrate and the orthographic projection of the sub-pixels on the substrate.

5. The display panel according to claim 2 or 3, wherein the protective layer has a refractive index larger than that of the color filter.

6. The display panel according to claim 3, wherein the second display region comprises a first region and/or a second region, the transmittance of the first region is greater than that of the second region, and the distribution density of the orthographic projection of the color filter on the first region is greater than that of the orthographic projection of the color filter on the corresponding second region.

7. The display panel according to claim 6, wherein an area of an orthographic projection of the black matrix layer on the first partition is smaller than an area of an orthographic projection of the black matrix layer on the second partition.

8. The display panel according to claim 1, further comprising a plurality of light-shielding walls disposed on a side of the antireflection layer away from the substrate, wherein an orthographic projection of the light-shielding walls on the substrate is within an orthographic projection range of the antireflection layer on the substrate.

9. The display panel according to claim 8, wherein the light-shielding walls comprise a first shielding wall extending in a first direction and/or a second shielding wall extending in a second direction, wherein,

10. The display panel according to claim 1, wherein the sub-pixel comprises a first electrode, an organic light emitting layer, and a second electrode disposed in a direction away from the substrate, the second electrode extends from the sub-pixel to a side of the pixel defining layer away from the substrate, the anti-reflective layer is disposed on a side of the second electrode close to the encapsulation layer, and a material of the anti-reflective layer is a black conductive material.

11. A display device comprising the display panel according to any one of claims 1 to 10.