CN119730638B - Display panel and display device - Google Patents
Display panel and display deviceInfo
- Publication number
- CN119730638B CN119730638B CN202411803984.7A CN202411803984A CN119730638B CN 119730638 B CN119730638 B CN 119730638B CN 202411803984 A CN202411803984 A CN 202411803984A CN 119730638 B CN119730638 B CN 119730638B
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- color
- color block
- black matrix
- display panel
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
- H10K59/8792—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. black layers
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/40—OLEDs integrated with touch screens
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Abstract
The application relates to a display panel and a display device, wherein a light-emitting functional layer comprises a plurality of light-emitting parts, retaining walls are arranged between adjacent light-emitting parts, a color film layer is arranged on one side, far away from an array substrate, of the light-emitting functional layer, the color film layer comprises a plurality of color blocks and a black matrix arranged between the adjacent color blocks, the plurality of color blocks are arranged corresponding to the plurality of light-emitting parts, the plurality of color blocks comprise a first color block, a second color block and a third color block, the black matrix comprises a first sub-part arranged between the first color block and the second color block, a second sub-part arranged between the first color block and the third color block, and a third sub-part arranged between the second color block and the third color block.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
Organic Light-Emitting Diode (OLED) display panels are widely used in various fields because they are Light, wide viewing angle, low power consumption, fast response, low temperature resistance, high luminous efficiency, and capable of preparing curved flexible display screens.
In an OLED display panel, a depolarizer (Pol LESS PANEL, PLP) technology is often used to replace the polarizer function, specifically, a Black Matrix (BM) layer and a Color Filter (CF) layer are used to replace the polarizer (Pol), where the Color layer includes Color blocks corresponding to pixel openings, and the Black Matrix layer is located between the Color blocks, where the Black Matrix layer can block the light emitted from the light emitting device, so that the large-viewing angle light emission of the display panel can be reduced.
Disclosure of Invention
The embodiment of the application provides a display panel and a display device, which can reduce the influence of a black matrix on the light emitting visual angle of the display panel and improve the visual angle of the display panel.
An embodiment of the present application provides a display panel including:
An array substrate;
The light-emitting functional layer is arranged on the array substrate and comprises a plurality of light-emitting parts;
the retaining wall is arranged on the array substrate and positioned between the adjacent light emitting parts;
The color film layer is arranged on one side, far away from the array substrate, of the light-emitting functional layer, the color film layer comprises a plurality of color blocks and a black matrix positioned between the adjacent color blocks, the plurality of color blocks are arranged corresponding to the plurality of light-emitting parts, the plurality of color blocks comprise a first color block, a second color block and a third color block, and the black matrix comprises a first sub-part positioned between the first color block and the second color block, a second sub-part positioned between the first color block and the third color block and a third sub-part positioned between the second color block and the third color block;
the width of the first sub-portion is larger than or equal to that of the second sub-portion, the width of the second sub-portion is larger than or equal to that of the third sub-portion, and the width of the black matrix is smaller than or equal to that of the retaining wall.
In an embodiment of the present application, the orthographic projection of the black matrix on the array substrate is located within a coverage area of the orthographic projection of the retaining wall on the array substrate.
In one embodiment of the present application, the edge of the orthographic projection of the black matrix on the array substrate is spaced from the edge of the orthographic projection of the retaining wall on the array substrate.
In one embodiment of the present application, the first color block is a green color block, the second color block is a blue color block, the third color block is a red color block, the width of the first sub-portion is greater than the width of the second sub-portion, and the width of the second sub-portion is greater than the width of the third sub-portion.
In an embodiment of the application, the display panel further includes a counter substrate disposed on a side of the light emitting functional layer away from the array substrate, the color film layer is disposed on a surface of the counter substrate on a side of the counter substrate close to the array substrate, the black matrix is in contact with the counter substrate, and the color block is in contact with the counter substrate.
In an embodiment of the present application, the display panel further includes an encapsulation layer disposed between the light emitting functional layer and the color film layer, and a calculation formula of the black matrix for a light shielding width of the light emitting portion adjacent thereto under a preset viewing angle is:
w=h1TanA+h2TanB-(w1-w2)/2;
A=arcsin[(n3sinC)/n1];
B=arcsin[(n3sinC)/n2];
Wherein w is the light shielding width, h 1 is the distance from the light emitting part to the color block, h 2 is the thickness of the color block, w 1 is the width of the retaining wall, w 2 is the width of the black matrix, n 1 is the refractive index of the encapsulation layer, n 2 is the refractive index of the color block, n 3 is the refractive index of air, a is the incident angle of the first light ray seen under the preset viewing angle at the position where the encapsulation layer enters the color block, B is the incident angle of the first light ray at the position where the color block enters the opposite substrate, and C is the preset viewing angle.
In one embodiment of the present application, the encapsulation layer includes an organic encapsulation layer, a distance between the light emitting part and the opposite substrate in a thickness direction of the display panel has a first value, a thickness of the organic encapsulation layer in a display area of the display panel has a second value, the first value decreases with a decrease in the second value, and a value of the decrease in the first value is equal to a value of the decrease in the second value.
In one embodiment of the present application, a distance between the light emitting part and the counter substrate in a thickness direction of the display panel is less than or equal to 10 micrometers.
In an embodiment of the application, the display panel further includes a touch electrode layer disposed between the light-emitting functional layer and the color film layer, and the orthographic projection of the touch electrode layer on the array substrate is located within a coverage range of the orthographic projection of the black matrix on the array substrate.
According to the above object of the present application, an embodiment of the present application also provides a display device including the display panel.
The application provides a display panel and a display device, which can effectively reduce the influence of a black matrix on the light emitting visual angle of the display panel and improve the visual angle of the display panel by reducing the width of the black matrix and enabling the width of the black matrix to be smaller than the width of a retaining wall, and can differentially set the widths of the black matrix between different color blocks and further differently shade light-emitting parts corresponding to different color blocks so as to improve the phenomenon of uneven display caused by different light emitting colors of the light-emitting parts and different attenuation of the light emitting visual angle.
Additional features and advantages of the application will be set forth in the detailed description which follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the application and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.
For a more complete understanding of the present application and the advantages thereof, reference is now made to the following descriptions taken in conjunction with the accompanying drawings, in which like reference numerals represent like parts throughout the following description.
Fig. 1 is a schematic diagram of a first structure of a display panel according to an embodiment of the present application;
fig. 2 is a schematic diagram of a second structure of a display panel according to an embodiment of the application;
fig. 3 is a schematic diagram of a third structure of a display panel according to an embodiment of the application;
fig. 4 is a schematic diagram of a fourth structure of a display panel according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a verification structure corresponding to different comparative examples and embodiments in a display panel according to an embodiment of the present application;
FIG. 6 is a first set of view angle verification graphs provided by an embodiment of the present application;
FIG. 7 is a second set of view angle verification graphs provided by an embodiment of the present application;
fig. 8 is a third set of view verification graphs provided by an embodiment of the present application.
Reference numerals illustrate:
11. Array substrate, 111, substrate, 112, thin film transistor layer, 12, opposite substrate;
21. 211, a light-emitting part, 22 and a retaining wall;
30. Color film layer, 31, color block, 311, first color block, 312, second color block, 313, third color block, 32, black matrix, 321, first sub-portion, 322, second sub-portion, 323, third sub-portion;
40. 41, an organic encapsulation layer;
51. The touch electrode layer, 52, a first insulating layer, 53, a second insulating layer.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by a person skilled in the art without any inventive effort, are intended to be within the scope of the present application based on the embodiments of the present application.
Referring to fig. 1, an embodiment of the present application provides a display panel, which includes an array substrate 11, a light-emitting functional layer 21, a retaining wall 22, and a color film layer 30.
The light-emitting functional layer 21 is disposed on the array substrate 11, the light-emitting functional layer 21 includes a plurality of light-emitting portions 211, the retaining wall 22 is disposed on the array substrate 11 and is located between adjacent light-emitting portions 211, the color film layer 30 is disposed on a side of the light-emitting functional layer 21 away from the array substrate 11, the color film layer 30 includes a plurality of color blocks 31 and a black matrix 32 located between adjacent color blocks 31, the plurality of color blocks 31 are disposed corresponding to the plurality of light-emitting portions 211, the plurality of color blocks 31 includes a first color block 311, a second color block 312 and a third color block 313, and the black matrix 32 includes a first sub-portion 321 located between the first color block 311 and the second color block 312, a second sub-portion 322 located between the first color block 311 and the third color block 313, and a third sub-portion 323 located between the second color block 311 and the third color block 313.
Further, the width of the first sub-portion 321 is greater than or equal to the width of the second sub-portion 322, the width of the second sub-portion 322 is greater than or equal to the width of the third sub-portion 323, and the width of the black matrix 32 is less than or equal to the width of the retaining wall 22
In the implementation and application process, the embodiment of the application reduces the width of the black matrix 32 and makes the width of the black matrix 32 smaller than the width of the retaining wall 22, thereby effectively reducing the influence of the black matrix 32 on the light-emitting visual angle of the display panel and improving the visual angle of the display panel, and can differentially set the widths of the black matrix 32 between different color blocks, thereby further having different shading degrees of the light-emitting parts 211 corresponding to different color blocks, so as to improve the phenomenon of uneven display caused by different light-emitting colors of the light-emitting parts 211 and different attenuation of the light-emitting visual angle.
Specifically, referring to fig. 1 and 2, in some embodiments, the display panel includes an array substrate 11 and a counter substrate 12 disposed opposite to each other, a light emitting function layer 21, a retaining wall 22, a counter substrate 12, and a color film layer 30, wherein the light emitting function layer 21 and the retaining wall 22 are disposed on the array substrate 11, the color film layer 30 is disposed on the counter substrate 12, specifically, the light emitting function layer 21 and the retaining wall 22 are disposed on a side of the array substrate 11 close to the counter substrate 12, the counter substrate 12 is disposed on a side of the light emitting function layer 21 away from the array substrate 11, and the color film layer 30 is disposed on a side of the counter substrate 12 close to the array substrate 11 or a side away from the array substrate 11.
It can be understood that the light-emitting functional layer 21 and the retaining wall 22 are prepared on the array substrate 11 in the process, the color film layer 30 is prepared on the opposite substrate 12 in the process, and then the array substrate 11 and the opposite substrate 12 are assembled, so that damage to the light-emitting functional layer 21 caused by the color film layer 30 in the exposure and development process can be avoided, and the damage to the light-emitting functional layer 21 caused by the process of the color film layer 30 is not required to be reduced by increasing the thickness of the film layer between the color film layer 30 and the light-emitting functional layer 21, so that the thickness of the film layer between the color film layer 30 and the light-emitting functional layer 21 can be reduced, the distance between the color film layer 30 and the light-emitting functional layer 21 can be reduced, the shielding of the black matrix 32 on the light-emitting portion 211 with a large viewing angle can be reduced, and the viewing angle of the display panel can be improved.
In some embodiments, the array substrate 11 includes a substrate 111 and a thin film transistor layer 112 disposed on the substrate 111, and the light emitting function layer 21 is disposed on a side of the thin film transistor layer 112 away from the substrate 111.
In some embodiments, the substrate 111 may be a rigid substrate, such as a glass substrate, or the substrate 111 may be a flexible substrate, such as a substrate formed of polyimide. When the substrate is a flexible substrate, the substrate 111 may be formed of a plurality of sub-substrates of the same material such as polyimide, and adjacent sub-substrates are bonded by an adhesive sub-layer.
In some embodiments, the thin film transistor layer 112 includes a thin film transistor including a semiconductor on the substrate, which may be formed of polysilicon or a metal oxide (e.g., indium gallium zinc oxide). Wherein the semiconductor is divided into a channel region and source and drain regions formed on both sides of the channel region. The thin film transistor layer 112 further includes a first gate insulating layer covering the semiconductor. The thin film transistor further includes a first gate electrode formed on the first gate insulating layer, the first gate electrode overlapping the channel region. The first gate electrode may be formed as multiple layers or monolayers including a low resistance material such as Al, ti, mo, cu, ni, or an alloy thereof, or a material having high corrosion resistance properties. The thin film transistor layer 112 further includes a second gate insulating layer covering the first gate electrode. The thin film transistor further includes a second gate electrode on the second gate insulating layer, the second gate electrode overlapping the first gate electrode, and the second gate electrode may be formed as a plurality of layers or a single layer including a low resistance material such as Al, ti, mo, cu, ni, or an alloy thereof, or a material having high corrosion resistance. The thin film transistor layer 112 further includes a first interlayer insulating layer formed on the second gate electrode. Wherein the first interlayer insulating layer and the first gate insulating layer, the second gate insulating layer include a source contact hole and a drain contact hole, and the source region and the drain region are exposed through the source contact hole and the drain contact hole, respectively.
The thin film transistor further includes a source electrode and a drain electrode disposed on the same layer, the source electrode and the drain electrode are both formed on the first interlayer insulating layer, the source electrode is connected to the source region through the source contact hole, and the drain electrode is connected to the drain region through the drain contact hole. Wherein the source and drain may be multiple layers or monolayers formed of a low resistance material such as Al, ti, mo, cu, ni, or an alloy thereof, or a material having high corrosion resistance properties. For example, the source and drain may be triple layers of Ti/Cu/Ti, ti/Ag/Ti, ti/Al/Ti or Mo/Al/Mo or other single or multi-layer structures.
In some embodiments, the thin film transistor layer 112 further includes a planarization layer on a side of the first interlayer insulating layer remote from the substrate 111, the planarization layer covering the source electrode and the drain electrode.
In some embodiments, the display panel further includes a plurality of anodes (not shown) disposed on the flat layer, and the anodes are connected to the source electrode or the drain electrode.
In some embodiments, the display panel further includes a pixel defining layer disposed on the flat layer, and a plurality of pixel openings and a retaining wall 22 surrounding each pixel opening are formed in the pixel defining layer, wherein the plurality of pixel openings may be disposed in one-to-one correspondence with the plurality of anodes, and each pixel opening exposes an upper surface of the corresponding anode.
Further, the light emitting functional layer 21 includes a plurality of light emitting portions 211, and the plurality of light emitting portions 211 are disposed corresponding to the plurality of pixel openings, and each of the light emitting portions 211 is disposed in the corresponding pixel opening and on the corresponding anode.
In some embodiments, the light emitting portions 211 and the pixel openings are disposed in a one-to-one correspondence.
In some embodiments, the display panel further includes a cathode layer (not shown) disposed on a side of the light emitting functional layer 21 away from the array substrate 11, and the cathode layer covers the light emitting portions 211 and the barrier walls 22.
In some embodiments, the opposite substrate 12 is disposed on a side of the light emitting functional layer 21 away from the array substrate 11, the color film layer 30 is disposed on the opposite substrate 12, and the color film layer 30 is disposed on a surface of the opposite substrate 12 on a side close to the array substrate 11, the color film layer 30 includes a plurality of color blocks 31 and a black matrix 32 disposed between adjacent color blocks 31, and the black matrix 32 is in contact with the opposite substrate 12, and the color blocks 31 are in contact with the opposite substrate 12.
In other embodiments of the present application, the color film layer 30 may be disposed on a surface of the opposite substrate 12 on a side away from the array substrate 11, and in embodiments of the present application, the color film layer 30 is disposed on the opposite substrate 12, and the color film layer 30 is disposed on a surface of the opposite substrate 12 on a side close to the array substrate 11.
In some embodiments, the orthographic projection of the black matrix 32 on the array substrate 11 is located within the coverage area of the orthographic projection of the retaining wall 22 on the array substrate 11, so that the embodiment of the application reduces the width of the black matrix 32 and makes the width of the black matrix 32 smaller than the width of the retaining wall 22, thereby effectively reducing the influence of the black matrix 32 on the light-emitting viewing angle of the display panel and improving the viewing angle of the display panel.
In some embodiments, the edge of the orthographic projection of the black matrix 32 on the array substrate 11 is spaced from the edge of the orthographic projection of the retaining wall 22 on the array substrate 11, that is, the width of the black matrix 32 is smaller than the width of the retaining wall 22, so that the probability that the light emission at the edge of each light emitting portion 211 is blocked by the black matrix 32 can be reduced, and the light emitting angle range of the light emitting portion 211 is further improved.
In some embodiments, the width of the black matrix 32 is greater than or equal to 4.5 microns and less than 20 microns, further, the width of the black matrix 32 is greater than or equal to 6 and less than or equal to 12 microns, for example, the width of the black matrix 32 may be 6 microns, 7 microns, 8 microns, 9 microns, 10 microns, 11 microns, or 12 microns.
In some embodiments, the display panel further includes a touch electrode layer 51 disposed between the light emitting functional layer 21 and the color film layer 30, a first insulating layer 52, and a second insulating layer 53, where the first insulating layer 52 is disposed between the touch electrode layer 51 and the light emitting functional layer 21, and the second insulating layer 53 is disposed between the touch electrode layer 51 and the color film layer 30, so that in order to block the reflected light of the touch electrode layer 51, the front projection of the touch electrode layer 51 on the array substrate 11 is located in the coverage area of the front projection of the black matrix 32 on the array substrate 11, i.e. in the embodiment of the application, the width of the black matrix 32 is reduced, and further, the width of the electrode in the touch electrode layer 51 needs to be reduced to be located in the coverage area of the black matrix 32.
In other embodiments of the present application, the material of the touch electrode layer 51 may include a transparent conductive material, and the front projection of the touch electrode layer 51 on the array substrate 11 may not be located within the coverage area of the front projection of the black matrix 32 on the array substrate 11, which may further affect the light emission and display effect.
In one embodiment of the present application, referring to fig. 1, the color blocks 31 include a first color block 311, a second color block 312 and a third color block 313, and the black matrix 32 includes a first sub-portion 321 between the first color block 311 and the second color block 312, a second sub-portion 322 between the first color block 311 and the third color block 313, and a third sub-portion 323 between the second color block 312 and the third color block 313.
In some embodiments, the first color block 311 is a green block, the second color block 312 is a blue block, and the third color block 313 is a red block.
The width of the first sub-portion 321 is equal to the width of the second sub-portion 322, and the width of the first sub-portion 321 is equal to the width of the third sub-portion 323, that is, the widths of the black matrix 32 are the same, so that the process can be simplified, and the process difficulty can be reduced.
In another embodiment of the present application, referring to fig. 3, the plurality of color blocks 31 includes a first color block 311, a second color block 312 and a third color block 313, and the black matrix 32 includes a first sub-portion 321 between the first color block 311 and the second color block 312, a second sub-portion 322 between the first color block 311 and the third color block 313, and a third sub-portion 323 between the second color block 312 and the third color block 313.
In some embodiments, the first color block 311 is a green block, the second color block 312 is a blue block, and the third color block 313 is a red block, where the width of the first sub-portion 321 is greater than the width of the second sub-portion 322, the width of the second sub-portion 322 is greater than the width of the third sub-portion 323, through the verification of the present application, the light-emitting angle attenuation between the red color block and the blue color block is the most serious, the light-emitting angle attenuation between the red color block and the green color block is the least serious, and therefore, in the embodiment of the present application, according to the different light-emitting angle attenuation degrees between the black color blocks of different colors, the width of the black matrix 32 between the black matrix 32 is set to be greater than the width of the second sub-portion 322, so that the light-emitting angle attenuation between the black matrix 32 and the black matrix 312 acts on the black matrix 312 and the black matrix 313 acts on the black matrix 32, and the black matrix 313 acts on the black matrix 31, and the light-emitting angle of view between the black matrix 312 is the black matrix is the most greatly improved, and the light-emitting angle of the black matrix is the black matrix 313 is more greatly improved, and the light-emitting angle attenuation between the black matrix and the black matrix is more than the black matrix 312 is more than the black matrix is more visible.
In some embodiments, the display panel includes red pixel columns, green pixel columns, and blue pixel columns alternately arranged in sequence along a first direction, the red pixel columns include a plurality of the third color blocks 313 arranged along a second direction, the green pixel columns include a plurality of the first color blocks 311 arranged along the second direction, and the blue pixel columns include a plurality of the second color blocks 312 arranged along the second direction, so that the first sub-portion 321 may be located between the green pixel columns and the blue pixel columns, the second sub-portion 322 may be located between the red pixel columns and the green pixel columns, and the third sub-portion 323 may be located between the red pixel columns and the blue pixel columns.
It should be noted that, in the embodiment of the present application, since the color film layer 30 is disposed on the opposite substrate 12, compared with the case where the color film layer 30 is directly disposed on the light-emitting functional layer 21, damage to the light-emitting functional layer 21 caused by the color film layer 30 in the exposure and development process can be avoided, and the damage to the light-emitting functional layer 21 caused by the process of the color film layer 30 does not need to be reduced by increasing the thickness of the film layer between the color film layer 30 and the light-emitting functional layer 21, so that the thickness of the film layer between the color film layer 30 and the light-emitting functional layer 21 can be reduced, the distance between the color film layer 30 and the light-emitting functional layer 21 can be reduced, and the shielding of the black matrix 32 to the light-emitting portion 211 with a large viewing angle can be further reduced, thereby further improving the viewing angle of the display panel.
In some embodiments, the display panel further includes an encapsulation layer 40 disposed between the light emitting function layer 21 and the color film layer 30, and the encapsulation layer 40 may be located between the second insulating layer 53 and the color film layer 30, wherein the encapsulation layer 40 includes an organic encapsulation layer 41.
In other embodiments of the present application, the encapsulation layer 40 may further include an inorganic encapsulation layer (not shown in the drawings), and the inorganic encapsulation layer may be located between the light emitting function layer 21 and the organic encapsulation layer 41, or the inorganic encapsulation layer may be located between the color film layer 30 and the organic encapsulation layer 41, or the inorganic encapsulation layer may be located between the light emitting function layer 21 and the organic encapsulation layer 41, and between the color film layer 30 and the organic encapsulation layer 41.
Referring to fig. 4, compared to the display panel shown in fig. 1, in the embodiment of the application, the thickness of the film layer between the color film layer 30 and the light emitting functional layer 21 can be reduced, and the thickness of the film layer between the color film layer 30 and the light emitting functional layer 21 is the organic encapsulation layer 41 that is the largest, so that the thickness of the organic encapsulation layer 41 can be reduced, the interval between the black matrix 32 and the light emitting portion 211 can be reduced, and the shielding effect of the black matrix 32 on the light emitting viewing angle of the light emitting portion 211 can be reduced, and in some embodiments, the interval H1 between the light emitting portion 211 and the opposite substrate 12 along the thickness direction of the display panel has a first value, the thickness H2 of the organic encapsulation layer 41 in the display area of the display panel has a second value, and the ratio of the second value to the first value is less than or equal to 0.8, for example, the ratio of the second value to the first value can be 0.8, 0.79.0.78, 0.78.75, or 0.77. The embodiment of the present application can achieve the purpose of controlling the pitch H1 by controlling the thickness H2, on the one hand, the organic encapsulation layer 41 can play a role of buffering stress and planarization, and on the other hand, the thickness of the organic encapsulation layer 41 is thinned to improve the light-emitting viewing angle.
In some embodiments, a distance H1 between the light emitting portion 211 and the opposite substrate 12 in the thickness direction of the display panel is less than or equal to 10 micrometers, for example, the distance H1 between the light emitting portion 211 and the opposite substrate 12 in the thickness direction of the display panel may be 10 micrometers, 9 micrometers, 8 micrometers, 7 micrometers, or 6 micrometers.
In some embodiments, the first value decreases with a decrease in the second value, the first value decreasing by an amount equal to the second value, and in embodiments of the present application, the decrease in the spacing H1 is achieved by a decrease in the thickness H2.
In some embodiments, referring to fig. 1, at a predetermined viewing angle C, a first light 2110 is emitted from an edge of the black matrix 32, and then the light on the right side of the first light 2110 is blocked by the black matrix 32, where n 1sinA=n2sinB=n3sinC,n1 is a refractive index of the encapsulation layer 40, n 2 is a refractive index of the color block 31, n 3 is a refractive index of air, a is an incident angle of the first light 2110 seen at the predetermined viewing angle C at the position where the encapsulation layer 40 enters the color block 31, and B is an incident angle of the first light 2110 at the position where the color block 31 enters the opposite substrate 12.
In some embodiments, when the organic encapsulation layer 41 covers a surface of the color block 31 away from the opposite substrate 12, then n 1 may be a refractive index of the organic encapsulation layer 41.
Further, at the preset viewing angle C, a calculation formula of the black matrix 32 for the light shielding width of the light emitting portion 211 adjacent thereto is:
w=w5-w6;
Wherein w 5=w3+w4,w6=(w1-w2)/2, w 1 is the width of the retaining wall 22, and w 2 is the width of the black matrix 32.
Further, w 3=h1TanA,w4=h2 TanB, where h 1 is a distance between the light emitting portion 211 and the color block 31, and h 2 is a thickness of the color block 31.
Therefore, a calculation formula of the black matrix 32 for the light shielding width w of the light emitting portion 211 adjacent thereto at the preset viewing angle C is obtained as follows:
w=h1TanA+h2TanB-(w1-w2)/2;
A=arcsin[(n3sinC)/n1];
B=arcsin[(n3sinC)/n2];
Where n 1、n2、n3、C、w1 and w 2 may be known conditions, and thus the light shielding width w may be obtained.
It can be understood that, as can be seen from the calculation formula of the light shielding width w, with the reduction of the distance H 1 from the light emitting portion 211 to the color block 31 and the thickness H 2 of the color block 31, the light shielding width w is reduced, and the distance H1 is equal to the sum of the distance H 1 and the thickness H 2, so that the light shielding width w of the black matrix 32 to the adjacent light emitting portion 211 can be effectively reduced by reducing the distance H1, so as to improve the viewing angle range of the display panel.
In some embodiments, the thickness H2 of the organic encapsulation layer 41 in the display area of the display panel may be equal to the distance H 1 between the light-emitting portion 211 and the color block 31.
Further, referring to fig. 1 and 5, the embodiment of the present application provides a first set of viewing angle verification embodiments, a second set of viewing angle verification embodiments, and a third set of viewing angle verification embodiments to verify that different settings of the color film layer 30 result in a change in the light-emitting viewing angle of the display panel.
Specifically, the first set of viewing angle verification examples includes comparative example 1, comparative example 2, comparative example 3, example 1, example 2, and example 3.
In comparative example 1, the color filter layer 30 of the display panel is configured as shown in the region a of fig. 5, the counter substrate 12 is not provided with the color block 31 and the black matrix 32, the distance H1 between the light emitting portion 211 and the counter substrate 12 in the thickness direction of the display panel is 9 micrometers, the thickness of the color block 31 is 2 micrometers, and the thickness H2 of the organic encapsulation layer 41 is 7 micrometers.
In comparative example 2, the color filter layer 30 of the display panel is configured as shown in region B of fig. 5, the counter substrate 12 is provided with the color block 31, the black matrix 32 is not provided, the distance H1 between the light emitting portion 211 and the counter substrate 12 in the thickness direction of the display panel is 9 micrometers, the thickness of the color block 31 is 2 micrometers, and the thickness H2 of the organic encapsulation layer 41 is 7 micrometers.
In comparative example 3, the color film layer 30 of the display panel is configured as shown in region C of fig. 5, the counter substrate 12 is provided with the color block 31 and the black matrix 32, the distance H1 between the light emitting portion 211 and the counter substrate 12 in the thickness direction of the display panel is 9 micrometers, the thickness of the color block 31 is 2 micrometers, the thickness H2 of the organic encapsulation layer 41 is 7 micrometers, and the width of the black matrix 32 is 20 micrometers.
In embodiment 1, as shown in a region D of fig. 5, the color film layer 30 of the display panel is configured such that the counter substrate 12 is provided with the color block 31 and the black matrix 32, a distance H1 between the light emitting portion 211 and the counter substrate 12 in a thickness direction of the display panel is 9 micrometers, a thickness of the color block 31 is 2 micrometers, a thickness H2 of the organic encapsulation layer 41 is 7 micrometers, and a width of the black matrix 32 is 13 micrometers.
In embodiment 2, as shown in a region D of fig. 5, the color filter layer 30 of the display panel is configured such that the counter substrate 12 is provided with the color block 31 and the black matrix 32, the distance H1 between the light emitting portion 211 and the counter substrate 12 in the thickness direction of the display panel is 9 micrometers, the thickness of the color block 31 is 2 micrometers, the thickness H2 of the organic encapsulation layer 41 is 7 micrometers, and the width of the black matrix 32 is 9 micrometers.
In embodiment 3, as shown in a region D of fig. 5, the color filter layer 30 of the display panel is configured such that the counter substrate 12 is provided with the color block 31 and the black matrix 32, the distance H1 between the light emitting portion 211 and the counter substrate 12 in the thickness direction of the display panel is 9 micrometers, the thickness of the color block 31 is 2 micrometers, the thickness H2 of the organic encapsulation layer 41 is 7 micrometers, and the width of the black matrix 32 is 5 micrometers.
The second set of viewing angle verification examples includes comparative example 1, comparative example 2, comparative example 4, example 5, and example 6.
In comparative example 1, the color filter layer 30 of the display panel is configured as shown in the region a of fig. 5, the counter substrate 12 is not provided with the color block 31 and the black matrix 32, the distance H1 between the light emitting portion 211 and the counter substrate 12 in the thickness direction of the display panel is 9 micrometers, the thickness of the color block 31 is 2 micrometers, and the thickness H2 of the organic encapsulation layer 41 is 7 micrometers.
In comparative example 2, the color filter layer 30 of the display panel is configured as shown in region B of fig. 5, the counter substrate 12 is provided with the color block 31, the black matrix 32 is not provided, the distance H1 between the light emitting portion 211 and the counter substrate 12 in the thickness direction of the display panel is 9 micrometers, the thickness of the color block 31 is 2 micrometers, and the thickness H2 of the organic encapsulation layer 41 is 7 micrometers.
In comparative example 4, the color film layer 30 of the display panel is configured as shown in region C of fig. 5, the counter substrate 12 is provided with the color block 31 and the black matrix 32, the distance H1 between the light emitting portion 211 and the counter substrate 12 in the thickness direction of the display panel is 10 micrometers, the thickness of the color block 31 is 2 micrometers, the thickness H2 of the organic encapsulation layer 41 is 8 micrometers, and the width of the black matrix 32 is 20 micrometers.
In embodiment 4, as shown in a region D of fig. 5, the color filter layer 30 of the display panel is configured such that the counter substrate 12 is provided with the color block 31 and the black matrix 32, the distance H1 between the light emitting portion 211 and the counter substrate 12 in the thickness direction of the display panel is 10 micrometers, the thickness of the color block 31 is 2 micrometers, the thickness of the organic encapsulation layer 41 is 8 micrometers, and the width of the black matrix 32 is 13 micrometers.
In embodiment 5, as shown in a region D of fig. 5, the color filter layer 30 of the display panel is configured such that the counter substrate 12 is provided with the color block 31 and the black matrix 32, the distance H1 between the light emitting portion 211 and the counter substrate 12 in the thickness direction of the display panel is 10 micrometers, the thickness of the color block 31 is 2 micrometers, the thickness H2 of the organic encapsulation layer 41 is 8 micrometers, and the width of the black matrix 32 is 9 micrometers.
In embodiment 6, as shown in a region D of fig. 5, the color filter layer 30 of the display panel is configured such that the counter substrate 12 is provided with the color block 31 and the black matrix 32, the distance H1 between the light emitting portion 211 and the counter substrate 12 in the thickness direction of the display panel is 10 micrometers, the thickness of the color block 31 is 2 micrometers, the thickness H2 of the organic encapsulation layer 41 is 8 micrometers, and the width of the black matrix 32 is 5 micrometers.
The third set of viewing angle verification examples includes comparative example 1, comparative example 2, comparative example 5, example 7, example 8, and example 9.
In comparative example 1, the color filter layer 30 of the display panel is configured as shown in the region a of fig. 5, the counter substrate 12 is not provided with the color block 31 and the black matrix 32, the distance H1 between the light emitting portion 211 and the counter substrate 12 in the thickness direction of the display panel is 9 micrometers, the thickness of the color block 31 is 2 micrometers, and the thickness H2 of the organic encapsulation layer 41 is 7 micrometers.
In comparative example 2, the color filter layer 30 of the display panel is configured as shown in region B of fig. 5, the counter substrate 12 is provided with the color block 31, the black matrix 32 is not provided, the distance H1 between the light emitting portion 211 and the counter substrate 12 in the thickness direction of the display panel is 9 micrometers, the thickness of the color block 31 is 2 micrometers, and the thickness H2 of the organic encapsulation layer 41 is 7 micrometers.
In comparative example 5, the color film layer 30 of the display panel is configured as shown in region C of fig. 5, the counter substrate 12 is provided with the color block 31 and the black matrix 32, the distance H1 between the light emitting portion 211 and the counter substrate 12 in the thickness direction of the display panel is 11 micrometers, the thickness of the color block 31 is 2 micrometers, the thickness H2 of the organic encapsulation layer 41 is 9 micrometers, and the width of the black matrix 32 is 20 micrometers.
In embodiment 7, as shown in a region D of fig. 5, the color filter layer 30 of the display panel is configured such that the counter substrate 12 is provided with the color block 31 and the black matrix 32, the distance H1 between the light emitting portion 211 and the counter substrate 12 in the thickness direction of the display panel is 11 micrometers, the thickness of the color block 31 is 2 micrometers, the thickness H2 of the organic encapsulation layer 41 is 9 micrometers, and the width of the black matrix 32 is 13 micrometers.
In embodiment 8, as shown in a region D of fig. 5, the color filter layer 30 of the display panel is configured such that the counter substrate 12 is provided with the color block 31 and the black matrix 32, the distance H1 between the light emitting portion 211 and the counter substrate 12 in the thickness direction of the display panel is 11 micrometers, the thickness of the color block 31 is 2 micrometers, the thickness H2 of the organic encapsulation layer 41 is 9 micrometers, and the width of the black matrix 32 is 9 micrometers.
In embodiment 9, as shown in a region D of fig. 5, the color filter layer 30 of the display panel is configured such that the counter substrate 12 is provided with the color block 31 and the black matrix 32, the distance H1 between the light emitting portion 211 and the counter substrate 12 in the thickness direction of the display panel is 11 micrometers, the thickness of the color block 31 is 2 micrometers, the thickness H2 of the organic encapsulation layer 41 is 9 micrometers, and the width of the black matrix 32 is 5 micrometers.
On the contrary, the data shown in table 1 and the luminance-viewing angle graphs shown in fig. 6, 7 and 8 were obtained after verification, wherein fig. 6 is a luminance-viewing angle graph obtained in the first group of viewing angle verification embodiments, fig. 7 is a luminance-viewing angle graph obtained in the second group of viewing angle verification embodiments, and fig. 8 is a luminance-viewing angle graph obtained in the third group of viewing angle verification embodiments.
TABLE 1
As shown in table 1 and fig. 6 to 8, as the width of the black matrix 32 decreases, the brightness of the display panel at the same viewing angle increases, and as the distance H1 between the light emitting portion 211 and the opposite substrate 12 in the thickness direction of the display panel decreases, the brightness of the display panel at the same viewing angle increases, that is, in the embodiment of the present application, by decreasing the width of the black matrix 32 and the distance H1 between the light emitting portion 211 and the opposite substrate 12 in the thickness direction of the display panel, the blocking effect of the black matrix 32 on the light emitting viewing angle of the light emitting portion 211 can be effectively reduced, and the light emitting viewing angle of the light emitting portion 211 can be effectively increased, thereby increasing the viewing angle of the display panel.
In addition, in the embodiment of the application, compared with the case that the color film layer 30 is directly arranged on the light-emitting functional layer 21, the color film layer 30 is arranged on the opposite substrate 12, the damage to the light-emitting functional layer 21 caused by the color film layer 30 in the exposure and development process can be avoided, and the damage to the light-emitting functional layer 21 caused by the process of manufacturing the color film layer 30 is not required to be reduced by increasing the thickness of the film layer between the color film layer 30 and the light-emitting functional layer 21, so that the thickness of the film layer between the color film layer 30 and the light-emitting functional layer 21 can be reduced, the distance between the color film layer 30 and the light-emitting functional layer 21 can be reduced, the light-emitting visual angle 211 of the light-emitting panel can be further improved by further shielding the black matrix 32.
In addition, an embodiment of the present application provides a display device including the display panel described in the above embodiment.
It can be appreciated that, since the display device has the display panel described in the above embodiments, the display device has the same advantages as the display panel, and will not be described herein.
In the description of the present application, the terms "first," "second," and the like 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 defining "a first" or "a second" may explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
The embodiments, the implementation modes and the related technical features of the application can be mutually combined and replaced under the condition of no conflict.
The foregoing is only a preferred embodiment of the present application, and is not intended to limit the present application in any way, but any simple modification, equivalent variation and modification made to the above embodiment according to the technical matter of the present application still fall within the scope of the technical solution of the present application.
Claims (8)
1. A display panel, comprising:
An array substrate;
The light-emitting functional layer is arranged on the array substrate and comprises a plurality of light-emitting parts;
the retaining wall is arranged on the array substrate and positioned between the adjacent light emitting parts;
The color film layer is arranged on one side, far away from the array substrate, of the light-emitting functional layer, the color film layer comprises a plurality of color blocks and a black matrix positioned between the adjacent color blocks, the plurality of color blocks are arranged corresponding to the plurality of light-emitting parts, the plurality of color blocks comprise a first color block, a second color block and a third color block, and the black matrix comprises a first sub-part positioned between the first color block and the second color block, a second sub-part positioned between the first color block and the third color block and a third sub-part positioned between the second color block and the third color block;
The color film layer is arranged on the surface of the opposite substrate, which is close to the array substrate, and the black matrix is contacted with the opposite substrate, and the color block is contacted with the opposite substrate;
The packaging layer is arranged between the light-emitting functional layer and the color film layer;
The width of the first sub-part is larger than or equal to that of the second sub-part, the width of the second sub-part is larger than or equal to that of the third sub-part, and the width of the black matrix is smaller than or equal to that of the retaining wall;
Under a preset viewing angle, a calculation formula of the black matrix for the shading width of the light emitting part adjacent to the black matrix is as follows:
w=h1TanA+h2TanB-(w1-w2)/2;
A=arcsin[(n3sinC)/n1];
B=arcsin[(n3sinC)/n2];
Wherein w is the light shielding width, h 1 is the distance from the light emitting part to the color block, h 2 is the thickness of the color block, w 1 is the width of the retaining wall, w 2 is the width of the black matrix, n 1 is the refractive index of the encapsulation layer, n 2 is the refractive index of the color block, n 3 is the refractive index of air, a is the incident angle of the first light ray seen under the preset viewing angle at the position where the encapsulation layer enters the color block, B is the incident angle of the first light ray at the position where the color block enters the opposite substrate, and C is the preset viewing angle.
2. The display panel of claim 1, wherein the orthographic projection of the black matrix on the array substrate is within a coverage area of the orthographic projection of the retaining wall on the array substrate.
3. The display panel of claim 2, wherein an edge of the orthographic projection of the black matrix on the array substrate is spaced from an edge of the orthographic projection of the retaining wall on the array substrate.
4. The display panel of claim 1, wherein the first color block is a green color block, the second color block is a blue color block, the third color block is a red color block, the width of the first sub-portion is greater than the width of the second sub-portion, and the width of the second sub-portion is greater than the width of the third sub-portion.
5. The display panel according to claim 1, wherein the encapsulation layer includes an organic encapsulation layer, a distance between the light emitting portion and the counter substrate in a thickness direction of the display panel has a first value, a thickness of the organic encapsulation layer in a display region of the display panel has a second value, the first value decreases with a decrease in the second value, and a value of the decrease in the first value is equal to a value of the decrease in the second value.
6. The display panel according to claim 5, wherein a distance between the light emitting portion and the counter substrate in a thickness direction of the display panel is less than or equal to 10 μm.
7. The display panel of claim 1, further comprising a touch electrode layer disposed between the light emitting functional layer and the color film layer, wherein an orthographic projection of the touch electrode layer on the array substrate is located within a coverage area of an orthographic projection of the black matrix on the array substrate.
8. A display device comprising the display panel according to any one of claims 1 to 7.
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| CN107024794B (en) * | 2017-06-08 | 2020-06-09 | 厦门天马微电子有限公司 | Display panel and display device |
| CN111755490B (en) * | 2020-06-22 | 2022-07-29 | 武汉华星光电半导体显示技术有限公司 | Display panel |
| CN112750962B (en) * | 2020-12-29 | 2022-06-14 | 湖北长江新型显示产业创新中心有限公司 | Display panel, manufacturing method thereof and display device |
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| CN115020619B (en) * | 2022-07-08 | 2024-02-13 | 武汉华星光电半导体显示技术有限公司 | Display panel and mobile terminal |
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