Display panel and display apparatus

Abstract

The present application relates to the technical field of display. Disclosed are a display panel and a display apparatus. The display panel comprises a base substrate, a plurality of pixel units, a color filter layer, a first dimming layer, a second dimming layer and a third dimming layer, wherein the color filter layer comprises a black matrix, and color resist blocks corresponding to the plurality of pixel units. When light emitted by the pixel units is emitted from the color resist blocks to the first dimming layer, the light is totally reflected by a first inclined dimming surface of the first dimming layer; and when the light emitted by the pixel units is emitted from the second dimming layer to the third dimming layer, the light is refracted by a second inclined dimming surface of a dimming pattern comprised in the second dimming layer. Thus, light that would originally be absorbed by the black matrix or light with a large angle of view can be emitted in the forward direction of the display panel after same is totally reflected or refracted, so as to increase the amount of emergent light of forward light emission of the display panel, thereby improving the display effect of the display panel.

Description

Display panel and display device Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] The display panel includes a base substrate and pixel units located in a display area of ​​the base substrate, wherein the pixel units can emit light to realize display on the display panel.

[0003] Summary of the Invention

[0004] The present application provides a display panel and a display device, and the technical solutions are as follows:

[0005] In one aspect, a display panel is provided, comprising:

[0006] substrate;

[0007] A plurality of pixel units located on one side of the base substrate;

[0008] a color filter layer located on a side of the plurality of pixel units away from the base substrate, the color filter layer comprising a black matrix having a plurality of openings, and a plurality of color resist blocks correspondingly disposed within the plurality of openings, the plurality of color resist blocks corresponding to the plurality of pixel units, the orthographic projection of each color resist block on the base substrate covering the orthographic projection of the light emitting area of ​​the corresponding pixel unit on the base substrate, and light emitted by the pixel unit exiting from the corresponding color resist block;

[0009] a first dimming layer located on a side of the plurality of pixel units away from the base substrate, wherein an orthographic projection of the first dimming layer on the base substrate overlaps an orthographic projection of the black matrix on the base substrate, the first dimming layer having an inclined first dimming slope, at least a portion of the first dimming slope in contact with the color resist block, a refractive index of the first dimming layer being less than a refractive index of the color resist block, and light emitted by the pixel units passing through the color resist block and irradiating the first dimming slope is totally reflected by the first dimming slope;

[0010] a second dimming layer located on a side of the color resist blocks away from the base substrate, the second dimming layer comprising a plurality of dimming patterns corresponding to the plurality of color resist blocks, the dimming patterns having an inclined second dimming slope;

[0011] And, a third dimming layer is located on a side of the second dimming layer away from the base substrate, the third dimming layer is in contact with the second dimming bevel, the refractive index of the third dimming layer is less than the refractive index of the second dimming layer, and the light emitted by the pixel unit is refracted by the second dimming bevel when passing through the second dimming layer and irradiating the second dimming bevel.

[0012] Optionally, the first dimming slope of the first dimming layer is further in contact with the dimming pattern, the refractive index of the second dimming layer is greater than the refractive index of the first dimming layer, and the light emitted by the pixel unit passes through the dimming pattern and is irradiated on the first dimming slope, and is totally reflected by the first dimming slope;

[0013] The dimming pattern has a groove, the second dimming slope is a sidewall of the groove, and the orthographic projection of the second dimming slope on the base substrate is located within the orthographic projection of the color resist block on the base substrate.

[0014] Optionally, a center line of the groove overlaps with a center line of the color resist block, and an orthographic projection area of ​​a side of the groove close to the base substrate is smaller than an orthographic projection area of ​​a side of the groove away from the base substrate.

[0015] Optionally, an included angle between the extension surface of the second dimming slope and the supporting surface of the base substrate ranges from 40 degrees to 75 degrees.

[0016] Optionally, the depth of the groove ranges from 1 micron to 2 microns.

[0017] Optionally, the plurality of color resist blocks include a plurality of first color resist blocks, a plurality of second color resist blocks and a plurality of third color resist blocks, and sizes of the first color resist blocks, the second color resist blocks and the third color resist blocks are different from each other;

[0018] Each of the dimming patterns has a plurality of evenly arranged grooves, and the number of the grooves included in each of the dimming patterns is positively correlated with the size of the corresponding color resist block.

[0019] Optionally, the groove is in the shape of a circle, a strip, a cross or a ring.

[0020] Optionally, the second dimming layer and the color resist block are made of the same material and are manufactured based on the same manufacturing process, and the second dimming layer and the color resist block are an integrated structure.

[0021] Optionally, the entire area of ​​the first dimming slope is in contact with the color resist block; there is a gap between the first dimming slope and the dimming pattern, and the second dimming slope is a sidewall of the dimming pattern;

[0022] The orthographic projection of the dimming pattern on the base substrate is located within the orthographic projection of the color resist block on the base substrate, and the orthographic projection of the second dimming slope on the base substrate is located within the orthographic projection of the color resist block on the base substrate.

[0023] Optionally, the entire area of ​​the first dimming slope is in contact with the color resist block; there is a gap between the first dimming slope and the dimming pattern, and the second dimming slope is a sidewall of the dimming pattern;

[0024] The orthographic projection of the second dimming slope on the base substrate is outside the orthographic projection of the color resist block on the base substrate, and the distance between a side of the second dimming slope close to the base substrate and a side of the first dimming slope away from the base substrate is less than 5 microns.

[0025] Optionally, the display panel further includes: a fourth dimming layer located between the color resist block and the second dimming layer, the refractive index of the fourth dimming layer being smaller than the refractive index of the color resist block and smaller than the refractive index of the second dimming layer.

[0026] Optionally, the center line of the dimming pattern overlaps with the center line of the color resist block;

[0027] An area of ​​an orthographic projection of the dimming pattern at a side away from the base substrate is smaller than an area of ​​an orthographic projection of the dimming pattern at a side close to the base substrate.

[0028] Optionally, an included angle between the extension surface of the second dimming slope and the supporting surface of the base substrate ranges from 40 degrees to 85 degrees.

[0029] Optionally, the thickness of the dimming pattern ranges from 2 microns to 3 microns.

[0030] Optionally, the plurality of color resist blocks include a plurality of first color resist blocks, a plurality of second color resist blocks and a plurality of third color resist blocks, and sizes of the first color resist blocks, the second color resist blocks and the third color resist blocks are different from each other;

[0031] Each of the color resist blocks corresponds to a plurality of evenly arranged dimming patterns included in the second dimming layer, and the number of the dimming patterns corresponding to each of the color resist blocks is positively correlated with the size of the color resist block.

[0032] Optionally, the dimming pattern is in the shape of a circle, a strip, a cross or a ring.

[0033] Optionally, the second dimming layer and the color resist block are made of the same material and are manufactured based on the same manufacturing process, and the second dimming layer and the color resist block are an integrated structure; or,

[0034] The second dimming layer and the color resist block are prepared in two steps using two preparation processes.

[0035] Optionally, the thickness of the first dimming layer is in a range of 1 micron to 3 microns, and the angle between the extension surface of the first dimming slope and the supporting surface of the base substrate is in a range of 40 degrees to 85 degrees.

[0036] Optionally, the refractive index of the first dimming layer and the third dimming layer ranges from 1.4 to 1.55, and the refractive index of the second dimming layer and the color resist block is greater than 1.55.

[0037] On the other hand, a display device is provided, comprising: a power supply component and the display panel according to the above aspect;

[0038] Wherein, the power supply component is used to supply power to the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0040] FIG1 is a partial cross-sectional schematic diagram of a display panel in the related art;

[0041] FIG2 is a partial cross-sectional schematic diagram of another display panel in the related art;

[0042] FIG3 is a partial cross-sectional schematic diagram of a display panel provided in an embodiment of the present application;

[0043] FIG4 is a partial top view of a color filter layer and a second dimming layer provided in an embodiment of the present application;

[0044] FIG5 is a partial top view of another color filter layer and a second dimming layer provided in an embodiment of the present application;

[0045] FIG6 is a partial top view of another color filter layer and a second dimming layer provided in an embodiment of the present application;

[0046] FIG7 is a partial top view of another color filter layer and a second dimming layer provided in an embodiment of the present application;

[0047] FIG8 is a partial top view of another color filter layer and a second dimming layer provided in an embodiment of the present application;

[0048] FIG9 is a partial cross-sectional schematic diagram of another display panel provided in an embodiment of the present application;

[0049] FIG10 is a partial top view of another color filter layer and a second dimming layer provided in an embodiment of the present application;

[0050] FIG11 is a partial top view of another color filter layer and a second dimming layer provided in an embodiment of the present application;

[0051] FIG12 is a partial top view of another color filter layer and a second dimming layer provided in an embodiment of the present application;

[0052] FIG13 is a partial top view of another color filter layer and a second dimming layer provided in an embodiment of the present application;

[0053] FIG14 is a partial top view of another color filter layer and a second dimming layer provided in an embodiment of the present application;

[0054] FIG15 is a partial cross-sectional schematic diagram of another display panel provided in an embodiment of the present application;

[0055] FIG16 is a partial cross-sectional schematic diagram of another display panel provided in an embodiment of the present application;

[0056] FIG17 is a partial cross-sectional schematic diagram of another display panel provided in an embodiment of the present application;

[0057] FIG18 is a partial cross-sectional schematic diagram of another display panel provided in an embodiment of the present application;

[0058] FIG19 is a top view of a substrate provided in an embodiment of the present application;

[0059] FIG20 is a partial cross-sectional schematic diagram of another display panel provided in an embodiment of the present application;

[0060] FIG21 is a schematic structural diagram of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0061] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0062] In the related art, the electrodes in an organic light-emitting diode (OLED) display panel reflect ambient light. When the ambient light intensity is strong, the display effect and contrast of the display panel will be greatly reduced due to the effect of the light reflected by the electrodes, making it difficult for users to see the image on the display panel clearly.

[0063] In order to solve the above problems, Figure 1 is a partial cross-sectional schematic diagram of a display panel in the related art. Referring to Figure 1, a polarizer is designed in the display panel, and the polarizer is used to change the direction of light. When the ambient light passes through the polarizer and the 1 / 4 wave plate, it will be modulated into circularly polarized light. The circularly polarized light is reflected by the electrode in the display panel and its direction is changed. After passing through the 1 / 4 wave plate, it will be modulated into linearly polarized light with a direction opposite to the polarization direction of the polarizer. Since the linearly polarized light cannot pass through the polarizer, the reflection effect of the electrode on the ambient light is reduced. The addition of the polarizer means better contrast and color cast performance, but it will reduce the luminous efficiency, the transmittance is low, and the display panel is thicker.

[0064] Furthermore, in order to improve the transmittance of the display panel and make the display panel thinner, referring to Figure 2, no polarizer is designed in the display panel, but a color filter layer COE is used to reduce the reflection of ambient light. Among them, the color filter layer COE includes a plurality of color blocks corresponding to the pixel units, and a black matrix (black matrix, BM) located between the plurality of color blocks. In the scheme shown in Figure 2, the black matrix has a strong absorption effect on light, and the ambient light will not return when it hits it. The color block can filter out light of a specific color. When the ambient light passes through the color block, it will show light of the corresponding color. Light can be reflected when it hits the electrode of the display panel. During the reflection process, part of the light will be absorbed by the black matrix, and the other part of the light will pass through the color block and be reflected to the outside world.

[0065] However, since part of the light will be absorbed by the black matrix, the amount of forward light emitted from the display panel will be affected, resulting in a poor display effect of the display panel.

[0066] FIG3 is a schematic diagram of the structure of a display panel provided in an embodiment of the present application. Referring to FIG3 , the display panel 10 includes: a base substrate 101 , a plurality of pixel units 102 , a color filter layer 103 , a first dimming layer 104 , a second dimming layer 105 , and a third dimming layer 106 .

[0067] Referring to FIG3 , a plurality of pixel units 102 are located on one side of a substrate 101. A color filter layer 103 is located on a side of the plurality of pixel units 102 away from the substrate 101. A first dimming layer 104 is located on a side of the plurality of pixel units 102 away from the substrate 101. A second dimming layer 105 is located on a side of the color resist block 1032 away from the substrate 101. A third dimming layer 106 is located on a side of the second dimming layer 105 away from the substrate 101.

[0068] 3 , the color filter layer 103 includes a black matrix 1031 having multiple openings, and a plurality of color resist blocks 1032 disposed within the openings. The plurality of color resist blocks 1032 correspond to the plurality of pixel units 102. The orthographic projection of each color resist block 1032 on the substrate 101 overlaps the orthographic projection of the light-emitting area of ​​the corresponding pixel unit 102 on the substrate 101. Light emitted by the pixel unit 102 exits from the corresponding color resist block 1032.

[0069] The orthographic projection of the first dimming layer 104 on the base substrate 101 overlaps with the orthographic projection of the black matrix 1031 on the base substrate 101. For example, in FIG3 , the first dimming layer 104 is located on the side of the black matrix 1031 close to the base substrate 101, and the orthographic projection of the black matrix 1031 on the base substrate 101 is located within the orthographic projection of the first dimming layer 104 on the base substrate 101. Of course, the first dimming layer 104 can also be located on the side of the black matrix 1031 away from the base substrate 101, and the orthographic projection of the first dimming layer 104 on the base substrate 101 is located within the orthographic projection of the black matrix 1031 on the base substrate 101.

[0070] Referring to Figure 3, the first dimming layer 104 has an inclined first dimming slope 104a. The inclined can refer to being inclined relative to the supporting surface of the base substrate 101. That is, the extension surface of the first dimming slope 104a intersects with the supporting surface of the base substrate 101. Referring to Figure 3, the angle between the first dimming slope 104a of the first dimming layer 104 and the surface of the first dimming layer 104 close to the base substrate 101 is an acute angle. At least part of the first dimming slope 104a is in contact with the color resist block 1032. The refractive index of the first dimming layer 104 is less than the refractive index of the color resist block 1032. When the light emitted by the pixel unit 102 passes through the color resist block 1032 and is irradiated on the first dimming slope 104a, it is totally reflected by the first dimming slope 104a.

[0071] Because the first dimming slope 104a is inclined and at least a portion of the first dimming slope 104a contacts the color block 1032, the incident angle of light emitted by the pixel unit 102 from the color block 1032 to the first dimming slope 104a is relatively large (greater than the critical angle for total internal reflection), allowing the light to be totally reflected by the first dimming slope 104a. As a result, light that would have been absorbed by the black matrix 1031 can be totally reflected and emitted in the forward direction of the display panel, thereby increasing the amount of forward light emitted by the display panel 10 and improving the display quality of the display panel.

[0072] 3 , the second dimming layer 105 includes a plurality of dimming patterns 1051 corresponding to the plurality of color resist blocks 1032 , and the dimming pattern 1051 has an inclined second dimming slope 1051a. The term "inclined" may refer to being inclined relative to the supporting surface of the base substrate 101 . That is, the extension surface of the second dimming slope 1051a intersects the supporting surface of the base substrate 101 . The third dimming layer 106 is in contact with the second dimming slope 1051a , and the refractive index of the third dimming layer 106 is less than that of the second dimming layer 105 . Light emitted by the pixel unit 102 passes through the second dimming layer 105 and is refracted by the second dimming slope 1051a when it is irradiated by the second dimming slope 1051a .

[0073] Because the second dimming slope 1051a is inclined and contacts the third dimming layer 106, the incident angle of light emitted by the pixel unit 102 from the second dimming slope 1051a to the third dimming layer 106 is relatively small (less than the critical angle for total internal reflection), allowing the light to be refracted by the second dimming slope 1051a. As a result, light that would have been absorbed by the black matrix 1031 or light with a wide viewing angle can be refracted and emitted in the forward direction of the display panel 10, thereby increasing the amount of forward light emitted from the display panel 10 and improving the display quality of the display panel 10.

[0074] In summary, an embodiment of the present application provides a display panel, which includes a base substrate, a plurality of pixel units, a color filter layer, a first dimming layer, a second dimming layer and a third dimming layer. The color filter layer includes a black matrix and a color block corresponding to the plurality of pixel units. When the light emitted by the pixel unit is emitted from the color block to the first dimming layer, it will be totally reflected by the first dimming slope of the first dimming layer, and when the light emitted by the pixel unit is emitted from the second dimming layer to the third dimming layer, it will be refracted by the second dimming slope of the dimming pattern included in the second dimming layer. In this way, the light that would originally be absorbed by the black matrix or the light with a large viewing angle can be emitted in the forward direction of the display panel after total reflection or refraction, thereby increasing the amount of light emitted in the forward direction of the display panel, thereby improving the display effect of the display panel.

[0075] Optionally, the thickness of the first dimming layer 104 ranges from 1 μm (micrometer) to 3 μm, and the angle between the extension surface of the first dimming slope 104a and the supporting surface of the base substrate 101 ranges from 40 degrees to 85 degrees. The design of the thickness and angle can further facilitate total reflection of light.

[0076] Optionally, the refractive index of the first dimming layer 104 and the third dimming layer 106 ranges from 1.4 to 1.55, for example, 1.47. The material of the first dimming layer 104 and the third dimming layer 106 may be OC glue. The third dimming layer 106 can serve as a flat layer, i.e., the third dimming layer 106 is a flat layer. The refractive index of the second dimming layer 105 and the color resist block 1032 is greater than 1.55, for example, 1.65 or 1.7. For example, the material of the color resist block 1032 may be resin. The material of the second dimming layer 105 may be zirconium oxide particles with microparticles added to an organic resin.

[0077] In the embodiment of the present application, if the thickness of the color block 1032 is less than the thickness of the first dimming layer 104, the area of ​​the first dimming slope 104a of the first dimming layer 104 that is not in contact with the color block 1032 cannot fully reflect the light. Therefore, in order to solve the above problem, referring to Figure 3, the first dimming slope 104a of the first dimming layer 104 can be made to contact the dimming pattern 1051, and the refractive index of the second dimming layer 105 can be made greater than the refractive index of the first dimming layer 104. In this case, when the light emitted by the pixel unit 102 is emitted from the dimming pattern 1051 to the first dimming layer 104, it will be fully reflected by the first dimming slope 104a of the first dimming layer 104. In this way, it is ensured that the first dimming slope 104a of the first dimming layer 104 can fully reflect the light, thereby ensuring the light output of the display panel 10 in the forward direction.

[0078] Referring to FIG. 3 , the dimming pattern 1051 has a groove M. The second dimming slope 1051a serves as the sidewall of the groove M. The orthographic projection of the second dimming slope 1051a on the base substrate 101 is located within the orthographic projection of the color resist block 1032 on the base substrate 101. The orthographic projection area of ​​the side of the groove M closest to the base substrate 101 is smaller than the orthographic projection area of ​​the side of the base substrate 101. The angle between the sidewall of the groove M and the bottom of the groove M is acute.

[0079] Optionally, the orthographic projection of the groove M on the base substrate 101 is located in the middle of the orthographic projection of the color resist block 1032 on the base substrate 101, that is, the center line of the groove M may overlap with the center line of the color resist block 1032. This can improve the symmetry of the second dimming slope 1051a, thereby allowing the light emitted by the pixel unit 102 to be symmetrically refracted and emitted, thereby improving the display effect of the display panel 10.

[0080] Optionally, the depth of the groove M can range from 2 μm to 3 μm. The angle between the extension surface of the second dimming slope 1051a and the supporting surface of the base substrate 101 ranges from 40 degrees to 75 degrees, for example, 50 degrees or 60 degrees. The design of this depth and angle can be more conducive to the refraction of light.

[0081] 3 , the second dimming layer 105 and the color resist block 1032 can be made of the same material and prepared based on the same preparation process. The second dimming layer 105 and the color resist block 1032 are an integrated structure. Optionally, when forming the second dimming layer 105 and the color resist block 1032, a color resist material can be set in the opening of the black matrix 1031, and the entire area of ​​the first dimming slope 104a is in contact with the color resist material. Then, a half-tone mask (HTM) is used to form a groove M on the surface of the color resist material away from the base substrate 101. In this case, the portion of the color resist material located on the side of the groove M close to the base substrate 101 constitutes the color resist block 1032, and the remaining portion constitutes the second dimming layer 105.

[0082] In an embodiment of the present application, the plurality of pixel units 102 includes a plurality of first pixel units, a plurality of second pixel units, and a plurality of third pixel units. The color of the light emitted by the first pixel unit, the color of the light emitted by the second pixel unit, and the color of the light emitted by the third pixel unit are different. For example, the color of the light emitted by the first pixel unit is red (red, R), and the first pixel unit is referred to as the red pixel unit 102. The color of the light emitted by the second pixel unit is green (green, G), and the second pixel unit is referred to as the green pixel unit 102. The color of the light emitted by the third pixel unit is blue (blue, B), and the third pixel unit is referred to as the blue pixel unit 102.

[0083] As can be seen from FIG3 , the plurality of color resist blocks 1032 include a plurality of first color resist blocks 1032a, a plurality of second color resist blocks 1032b, and a plurality of third color resist blocks 1032c. The sizes of the first color resist blocks 1032a, the second color resist blocks 1032b, and the third color resist blocks 1032c are different. The size of the color resist blocks 1032 can be measured by the area of ​​their orthographic projections on the substrate 101.

[0084] Optionally, the plurality of first color blocks 1032a correspond to the plurality of first pixel units, and the first color blocks 1032a may be red color blocks. The plurality of second color blocks 1032b correspond to the plurality of second pixel units, and the second color blocks 1032b may be green color blocks. The plurality of third color blocks 1032c correspond to the plurality of third pixel units, and the third color blocks 1032c may be blue color blocks.

[0085] Optionally, in the wavelength band of 550 nm (nanometer), the refractive index of the first color block 1032 a may be 1.7, the refractive index of the second color block 1032 b may be 1.6, and the refractive index of the third color block 1032 c may be 1.59.

[0086] 4 , each dimming pattern 1051 has one groove M. Referring to FIG5 , each dimming pattern 1051 has multiple uniformly arranged grooves M. That is, each dimming pattern 1051 may have one groove M or multiple grooves M.

[0087] Optionally, referring to FIG5 , each dimming pattern 1051 has five grooves M. Of course, to optimize the design of the number of grooves M for the dimming patterns 1051 above color resist blocks 1032 of different sizes, the number of grooves M in the dimming pattern 1051 corresponding to each color resist block 1032 can be positively correlated with the size of the color resist block 1032. That is, the larger the size of the color resist block 1032, the greater the number of grooves M in the corresponding dimming pattern 1051; and the smaller the size of the color resist block 1032, the fewer the number of grooves M in the corresponding dimming pattern 1051.

[0088] Furthermore, referring to Figures 4 and 5 , the groove M may be circular in shape. Alternatively, referring to Figure 6 , the groove M may be bar-shaped. Alternatively, referring to Figure 7 , the groove M may be cross-shaped. Alternatively, referring to Figure 8 , the groove M may be annular in shape. Of course, the groove M may also have other shapes, which are not limited in this embodiment of the present application.

[0089] Figure 9 is a partial cross-sectional diagram of another display panel provided by an embodiment of the present application. Referring to Figure 9 , the entire area of ​​the first dimming slope 104a is in contact with the color resist block 1032. A gap exists between the first dimming slope 104a and the dimming pattern 1051, and the second dimming slope 1051a serves as a sidewall of the dimming pattern 1051. The gap between the first dimming slope 104a and the dimming pattern 1051 may mean that there is a gap between the orthographic projection of the first dimming slope 104a on the base substrate 101 and the orthographic projection of the dimming pattern 1051 on the base substrate 101.

[0090] Referring to FIG. 9 , the orthographic projection of the dimming pattern 1051 on the base substrate 101 is located within the orthographic projection of the color resist block 1032 on the base substrate 101. In other words, the orthographic projection area of ​​the dimming pattern 1051 on the base substrate 101 is smaller than the orthographic projection area of ​​the color resist block 1032 on the base substrate 101. As a result, the orthographic projection of the second dimming slope 1051a on the base substrate 101 is located within the orthographic projection of the color resist block 1032 on the base substrate 101.

[0091] Optionally, the orthographic projection of the dimming pattern 1051 on the base substrate 101 is located in the middle of the orthographic projection of the color resist block 1032 on the base substrate 101, that is, the middle of the dimming pattern 1051 can overlap the middle of the color resist block 1032. This can improve the symmetry of the second dimming slope 1051a, thereby allowing light emitted by the pixel unit 102 to be symmetrically refracted and emitted, thereby improving the display effect of the display panel.

[0092] Optionally, the thickness of the dimming pattern 1051 ranges from 2 μm to 3 μm. The angle between the extension surface of the second dimming slope 1051a and the supporting surface of the base substrate 101 ranges from 40 degrees to 85 degrees. The design of this thickness and angle can better facilitate the refraction of light.

[0093] 10 , the second dimming layer 105 corresponding to each color resist block 1032 includes a dimming pattern 1051. Referring to FIG11 , the second dimming layer 105 corresponding to each color resist block 1032 includes multiple evenly arranged dimming patterns 1051. In other words, the second dimming layer 105 corresponding to each color resist block 1032 may include one dimming pattern 1051 or multiple dimming patterns 1051.

[0094] Optionally, referring to FIG11 , the number of dimming patterns 1051 included in the second dimming layer 105 corresponding to each color resist block 1032 is 5. Of course, to optimize the number of dimming patterns 1051 above color resist blocks 1032 of different sizes, the number of dimming patterns 1051 corresponding to each color resist block 1032 can be positively correlated with the size of the color resist block 1032. That is, the larger the size of the color resist block 1032, the greater the number of corresponding dimming patterns 1051; and the smaller the size of the color resist block 1032, the fewer the number of corresponding dimming patterns 1051.

[0095] Furthermore, referring to Figures 10 and 11 , the dimming pattern 1051 may be circular. Alternatively, referring to Figure 12 , the dimming pattern 1051 may be bar-shaped. Alternatively, referring to Figure 13 , the dimming pattern 1051 may be cross-shaped. Alternatively, referring to Figure 14 , the dimming pattern 1051 may be annular. Of course, the dimming pattern 1051 may also have other shapes, which are not limited in this embodiment of the present application.

[0096] Referring to Figures 15 and 16 , the orthographic projection of the dimming pattern 1051 on the substrate 101 overlaps the orthographic projection of the color resist block 1032 on the substrate 101. That is, the orthographic projection of the dimming pattern 1051 on the substrate 101 is larger than the orthographic projection of the color resist block 1032 on the substrate 101. This ensures that the orthographic projection of the second dimming slope 1051a on the substrate 101 is located outside the orthographic projection of the color resist block 1032 on the substrate 101. Furthermore, the distance d between the side of the second dimming slope 1051a closest to the substrate 101 and the side of the first dimming slope 104a further away from the substrate 101 is less than 5 μm. That is, the distance between the second dimming slope 1051a and the first dimming slope 104a is small, thereby preventing light from being irradiated onto the black matrix 1031 and being absorbed by the black matrix 1031, ensuring that the light can be irradiated onto the second dimming slope 1051a and refracted by the second dimming slope 1051a.

[0097] In an embodiment of the present application, the second dimming layer 105 and the color resist block 1032 can be made of the same material and prepared based on the same preparation process, and the second dimming layer 105 and the color resist block 1032 are an integrated structure. Optionally, when forming the second dimming layer 105 and the color resist block 1032, a color resist material can be set in the opening of the black matrix 1031, and the entire area of ​​the first dimming slope 104a is in contact with the color resist material, and the color resist material is away from the surface of the base substrate 101 and exceeds the first dimming layer 104 away from the surface of the base substrate 101 by a certain distance. For example, it exceeds the thickness range of the dimming pattern 1051 by 2μm to 3μm. Thereafter, part of the material in the color resist material is removed to form a raised dimming pattern 1051. In this case, the portion of the color resist material located on the side of the dimming pattern 1051 close to the base substrate 101 constitutes the color resist block 1032.

[0098] Alternatively, the second dimming layer 105 and the color resist blocks 1032 are prepared in two steps using two different preparation processes. Optionally, when forming the second dimming layer 105 and the color resist blocks 1032, a color resist material can be placed in the openings of the black matrix 1031 to form the color resist blocks 1032. A dimming pattern 1051 of the second dimming layer 105 is then formed on the side of the color resist blocks 1032 away from the base substrate 101. In this case, the material of the second dimming layer 105 and the material of the color resist blocks 1032 can be the same or different, and this embodiment of the application is not limited to this.

[0099] In the embodiment of the present application, referring to Figures 17 and 18 , the display panel 10 further includes a fourth dimming layer 107 located between the color resist block 1032 and the second dimming layer 105. The refractive index of the fourth dimming layer 107 is lower than that of the color resist block 1032 and lower than that of the second dimming layer 105. Optionally, the refractive index of the fourth dimming layer 107 ranges from 1.4 to 1.55, for example, 1.47.

[0100] Among them, when the light emitted by the pixel unit 102 is emitted, it can pass through the interface between the color block 1032 and the fourth dimming layer 107, the interface between the fourth dimming layer 107 and the dimming pattern 1051, and the interface between the dimming pattern 1051 and the third dimming layer 106 (the second dimming slope 1051a) in sequence.

[0101] The refractive index of the color block 1032 is greater than that of the fourth dimming layer 107. Therefore, when light is emitted from the color block 1032 to the fourth dimming layer 107, it is emitted from a denser medium to a less dense medium. Furthermore, the incident angle of the light is less than the critical angle for total internal reflection, so the light is refracted at the interface between the color block 1032 and the fourth dimming layer 107.

[0102] The refractive index of the second dimming layer 105 is greater than that of the fourth dimming layer 107 . Therefore, when light is emitted from the fourth dimming layer 107 to the second dimming layer 105 , the light is emitted from the optically less dense medium to the optically dense medium. The light is refracted at the interface between the fourth dimming layer 107 and the dimming pattern 1051 .

[0103] The refractive index of the third dimming layer 106 is lower than that of the second dimming layer 105. Therefore, when light is emitted from the dimming pattern 1051 of the second dimming layer 105 to the third dimming layer 106, it is emitted from an optically denser medium to an optically less dense medium. Furthermore, the incident angle of the light is lower than the critical angle for total internal reflection, so the light is refracted at the interface (the second dimming slope 1051a) between the dimming pattern 1051 and the third dimming layer 106.

[0104] That is, by designing the fourth dimming layer 107 , the light emitted from the pixel unit 102 can be refracted three times and then emitted toward the forward direction of the display panel.

[0105] For a solution designed with a fourth dimming layer 107, the color resist blocks 1032 and the second dimming layer 105 can be prepared in two steps using two preparation processes. Alternatively, assuming that the material of the second dimming layer 105 is the same as that of the color resist blocks 1032 (i.e., the material of the second dimming layer 105 is a color resist material), the color resist material can be arranged in the opening of the black matrix 1031 to obtain the color resist blocks 1032. Then, the fourth dimming layer 107 is formed on the side of the color resist blocks 1032 away from the base substrate 101, and finally, the dimming pattern 1051 of the second dimming layer 105 is formed on the side of the fourth dimming layer 107 away from the base substrate 101 using the color resist material. In this case, the material of the second dimming layer 105 and the material of the color resist blocks 1032 can be the same or different, and this embodiment of the present application is not limited to this. Alternatively, assuming that the material of the second dimming layer 105 and the material of the color resist blocks 1032 are different, the color resist material can be arranged in the opening of the black matrix 1031 to obtain the color resist blocks 1032. Then, the fourth dimming layer 107 is formed on the side of the color resist block 1032 away from the base substrate 101 , and finally, the dimming pattern 1051 of the second dimming layer 105 is formed on the side of the fourth dimming layer 107 away from the base substrate 101 using OC glue.

[0106] In the embodiment of the present application, referring to FIG19 , a base substrate 101 includes a display area 101a and a peripheral area 101b surrounding the display area 101a. A plurality of pixel units 102 are located in the display area 101a. The display panel 10 further includes an encapsulation film layer 108 located on a side of the plurality of pixel units 102 away from the base substrate 101.

[0107] FIG20 is a schematic diagram of the structure of another display panel provided in an embodiment of the present application. The display panel includes: a buffer layer (buffer) n1, an active layer n2, a first gate insulator (GI) n3, a first gate layer n4, a second gate insulator n5, a second gate layer n6, an inter-level dielectric (ILD) n7, a first source and drain layer n8, a first planarization layer (PLN) n9, a second source and drain layer n10, a second planarization layer n11, an anode layer 1021 (anode), a pixel defining layer 1022, a support layer (PS) n12, a light-emitting layer 1023, a cathode layer 1024 (cathode), and an encapsulation film layer 108, stacked sequentially in a direction away from a substrate 101.

[0108] Optionally, the material of the pixel definition layer 1022 may be a black light-absorbing material, which is referred to as (black pixel definition layer, black PDL).

[0109] Each pixel unit 102 in the display area 101a of the display panel may include a pixel circuit and a light emitting unit, wherein the pixel circuit may include a storage capacitor and at least one thin film transistor.

[0110] Optionally, the active layer n2 may include multiple active patterns. The first gate layer n4 may include multiple first gate patterns. The second gate layer n6 may include multiple second gate patterns. The first source-drain layer n8 may include multiple source electrodes and multiple drain electrodes corresponding to the multiple source electrodes. The second source-drain layer n10 may include multiple connection patterns.

[0111] An active pattern, a first gate pattern, a source electrode, and a drain electrode can constitute a thin film transistor, and the source electrode and the corresponding drain electrode of each thin film transistor can be connected to the active pattern. A first gate pattern and a second gate pattern can constitute a storage capacitor.

[0112] Among them, the display panel 10 includes an anode layer 1021, a light-emitting layer 1023 and a cathode layer 1024, which can constitute the light-emitting units of multiple pixel units 102. The anode layer 1021 can include multiple anode patterns. The pixel defining layer 1022 has multiple hollow areas, each of which exposes an anode pattern, and the anode pattern of each light-emitting unit is connected to the drain of the thin film transistor through a connecting pattern. The light-emitting layer 1023 can include multiple light-emitting patterns corresponding to the multiple anode patterns, each of which is located in a hollow area and contacts the anode pattern exposed in the hollow area. The cathode layer 1024 is a common film layer for multiple light-emitting units. Each light-emitting unit includes an anode pattern, a light-emitting pattern and a cathode layer 1024. That is, the light-emitting pattern of each light-emitting unit emits light under the joint action of its anode pattern and the cathode layer 1024.

[0113] The encapsulation film layer 108 includes a first inorganic encapsulation layer 1081, an organic encapsulation layer 1082, and a second inorganic encapsulation layer 1083. The first and second inorganic encapsulation layers 1081 and 1083 are located in the display area 101a and the peripheral area 101b, and the organic encapsulation layer 1082 is located at least in the display area 101a.

[0114] Optionally, the first inorganic encapsulation layer 1081 and the second inorganic encapsulation layer 1083 may be made of an inorganic material, and the organic encapsulation layer 1082 may be made of an organic material. For example, the first inorganic encapsulation layer 1081 and the second inorganic encapsulation layer 1083 may be made of one or more inorganic oxides such as SiNx (silicon nitride), SiOx (silicon oxide), and SiOxNy (silicon oxynitride). The organic encapsulation layer 1082 may be made of a resin material. The resin may be a thermoplastic resin or a thermoplastic resin, the thermoplastic resin may include an acrylic (PMMA) resin, and the thermosetting resin may include an epoxy resin.

[0115] Since the organic encapsulation layer 1082 may be made of an organic material, the organic encapsulation layer 1082 is not located in the peripheral area 101 b , thereby preventing water vapor and oxygen from entering the display area 101 a through the organic encapsulation layer 1082 , thereby ensuring the encapsulation effect.

[0116] Optionally, the organic encapsulation layer 1082 may be fabricated by ink jet printing (IJP). The first inorganic encapsulation layer 1081 and the second inorganic encapsulation layer 1083 may be fabricated by chemical vapor deposition (CVD).

[0117] Optionally, the portion of the second inorganic encapsulation layer 1083 located in the display area 101a, away from the surface of the base substrate 101, is flat, and the color filter layer 103 can be located on the flat surface. Specifically, providing the encapsulation film layer 108 on the side of the color filter layer 103 close to the base substrate 101 not only encapsulates the pixel unit 102 but also provides a flat surface for fabricating the color filter layer 103, thereby ensuring fabrication accuracy of the color filter layer 103.

[0118] In summary, an embodiment of the present application provides a display panel, which includes a base substrate, a plurality of pixel units, a color filter layer, a first dimming layer, a second dimming layer and a third dimming layer. The color filter layer includes a black matrix and a color block corresponding to the plurality of pixel units. When the light emitted by the pixel unit is emitted from the color block to the first dimming layer, it will be totally reflected by the first dimming slope of the first dimming layer, and when the light emitted by the pixel unit is emitted from the second dimming layer to the third dimming layer, it will be refracted by the second dimming slope of the dimming pattern included in the second dimming layer. In this way, the light that would originally be absorbed by the black matrix or the light with a large viewing angle can be emitted in the forward direction of the display panel after total reflection or refraction, thereby increasing the amount of light emitted in the forward direction of the display panel, thereby improving the display effect of the display panel.

[0119] FIG21 is a schematic diagram of the structure of a display device provided in an embodiment of the present application. Referring to FIG21 , the display device may include: a power supply component 20 and the display panel 10 provided in the above embodiment. The power supply component 20 may be used to supply power to the display panel 10.

[0120] Optionally, the display device can be an OLED display device, a quantum dot light emitting diode (QLED) display device, electronic paper, a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame or a navigator, or any other product or component with a display function and a fingerprint recognition function.

[0121] For example, the display device is an active-matrix organic light emitting diode (AMOLED) display panel.

[0122] Since the display device can have substantially the same technical effects as the display panel described in the previous embodiment, the technical effects of the display device will not be repeatedly described here for the purpose of brevity.

[0123] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A display panel, characterized in that, The display panel includes: a substrate; a plurality of pixel units located on one side of the substrate; a color filter layer located on the side of the plurality of pixel units away from the substrate, the color filter layer includes a black matrix having a plurality of openings, and a plurality of color resist blocks correspondingly disposed in the plurality of openings, the plurality of color resist blocks correspond to the plurality of pixel units, and the orthographic projection of each color resist block on the substrate covers the orthographic projection of the light-emitting region of the corresponding pixel unit on the substrate, and the light emitted by the pixel unit exits from the corresponding color resist block; a first light-adjusting layer located on the side of the plurality of pixel units away from the substrate, an orthographic projection of the first light-adjusting layer on the substrate and an orthographic projection of the black matrix on the substrate overlap, the first light-adjusting layer has an inclined first light-adjusting slope, at least a part of the first light-adjusting slope contacts the color resist block, and the refractive index of the first light-adjusting layer is less than the refractive index of the color resist block, and the light emitted by the pixel unit is totally reflected by the first light-adjusting slope when passing through the color resist block and irradiating the first light-adjusting slope; a second light-adjusting layer located on the side of the color resist block away from the substrate, the second light-adjusting layer includes a plurality of light-adjusting patterns corresponding to the plurality of color resist blocks, and the light-adjusting pattern has an inclined second light-adjusting slope; and a third light-adjusting layer located on the side of the second light-adjusting layer away from the substrate, the third light-adjusting layer contacts the second light-adjusting slope, and the refractive index of the third light-adjusting layer is less than the refractive index of the second light-adjusting layer, and the light emitted by the pixel unit is refracted by the second light-adjusting slope when passing through the second light-adjusting layer and irradiating the second light-adjusting slope.

2. The display panel according to claim 1, wherein The first light-adjusting slope of the first light-adjusting layer also contacts the light-adjusting pattern, the refractive index of the second light-adjusting layer is greater than the refractive index of the first light-adjusting layer, and the light emitted by the pixel unit is totally reflected by the first light-adjusting slope when passing through the light-adjusting pattern and irradiating the first light-adjusting slope; The light-adjusting pattern has a groove, the second light-adjusting slope is a side wall of the groove, and an orthographic projection of the second light-adjusting slope on the substrate is located within an orthographic projection of the color resist block on the substrate inside.

3. The display panel according to claim 2, wherein A midline of the groove overlaps with a midline of the color resist block, and an area of a positive projection of a side of the groove close to the substrate is smaller than an area of a positive projection of a side of the groove away from the substrate.

4. The display panel according to claim 2, characterized in that, An included angle range between an extension surface of the second light-adjusting slope and a bearing surface of the substrate is 40 degrees to 75 degrees.

5. The display panel according to claim 2, characterized in that, A depth range of the groove is 1 micron to 2 microns.

6. The display panel according to claim 2, wherein The plurality of color resist blocks include a plurality of first color resist blocks, a plurality of second color resist blocks and a plurality of third color resist blocks, and sizes of the first color resist blocks, sizes of the second color resist blocks and sizes of the third color resist blocks are pairwise different; Wherein, each light-adjusting pattern has a plurality of the grooves arranged uniformly, and a number of the grooves included in each light-adjusting pattern is positively correlated with a size of the corresponding color resist block.

7. The display panel according to claim 2, wherein, The shape of the groove is circular, strip-shaped, cross-shaped or annular.

8. The display panel according to claim 2, wherein The second dimming layer and the color resist block are made of the same material and prepared based on the same preparation process, and the second dimming layer and the color resist block are an integral structure.

9. The display panel according to claim 1, wherein All regions of the first dimming inclined surface are in contact with the color resist block; there is a gap between the first dimming inclined surface and the dimming pattern, and the second dimming inclined surface is the side wall of the dimming pattern; Wherein, the orthographic projection of the dimming pattern on the substrate is located within the orthographic projection of the color resist block on the substrate, and the orthographic projection of the second dimming inclined surface on the substrate is located within the Orthographic projection of the color resist block on the substrate.

10. The display panel according to claim 1, wherein All regions of the first dimming inclined surface are in contact with the color resist block; there is a gap between the first dimming inclined surface and the dimming pattern, and the second dimming inclined surface is the side wall of the dimming pattern; Wherein, the orthographic projection of the second dimming inclined surface on the substrate is located outside the orthographic projection of the color resist block on the substrate, and the distance between the side of the second dimming inclined surface close to the substrate and the side of the first dimming inclined surface far from the substrate is less than 5 micrometers.

11. The display panel according to claim 10, wherein The display panel further includes: a fourth dimming layer located between the color resist block and the second dimming layer, and the refractive index of the fourth dimming layer is less than the refractive index of the color resist block and less than the refractive index of the second dimming layer.

12. The display panel according to any one of claims 9 to 11, characterized in that, The center line of the dimming pattern overlaps with the center line of the color resist block; The area of the orthographic projection of the side of the dimming pattern far from the substrate is less than the area of the orthographic projection of the side of the dimming pattern close to the substrate.

13. The display panel according to any one of claims 9 to 11, characterized in that, The included angle range between the extension surface of the second dimming inclined surface and the bearing surface of the substrate is 40 degrees to 85 degrees.

14. The display panel according to any one of claims 9 to 11, characterized in that, The thickness range of the dimming pattern is 2 micrometers to 3 micrometers.

15. The display panel according to any one of claims 9 to 11, characterized in that, The multiple color resist blocks include multiple first color resist blocks, multiple second color resist blocks and multiple third color resist blocks, and the sizes of the first color resist blocks, the second color resist blocks and the third color resist blocks are different from each other in pairs; Wherein, each color resist block corresponds to a plurality of uniformly arranged dimming patterns included in the second dimming layer, and the number of dimming patterns corresponding to each color resist block is positively correlated with the size of the color resist block.

16. The display panel according to any one of claims 9 to 11, characterized in that, The shape of the dimming pattern is circular, strip-shaped, cross-shaped or annular.

17. The display panel according to any one of claims 9 to 11, characterized in that, The second dimming layer and the color resist block are made of the same material and prepared based on the same preparation process, and the second dimming layer and the color resist block are an integral structure; or, The second dimming layer and the color resist block are prepared separately by two preparation processes.

18. The display panel according to claim 1, wherein The thickness range of the first dimming layer is 1 micrometer to 3 micrometers, and the included angle range between the extension surface of the first dimming inclined surface and the bearing surface of the substrate is 40 degrees to 85 degrees.

19. The display panel according to claim 1, wherein The refractive index ranges of the first dimming layer and the third dimming layer are 1.4 to 1.55, and the refractive indices of the second dimming layer and the color resist block are greater than 1.

55.

20. A display device, characterized in that, The display device includes: a power supply component and the display panel according to any one of claims 1 to 19; Wherein, the power supply component is used to supply power to the display panel.

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