Display substrate and display device

Abstract

The invention provides a display substrate and a display device. The display substrate comprises a substrate, a light-emitting layer, an insulating layer, a color filter layer and a shading layer. The insulating layer is positioned on one side, far away from the substrate, of the light-emitting layer; the insulating layer is provided with a plurality of through holes. The color filter layer is located on the side, away from the substrate, of the light-emitting layer and comprises a plurality of color filter parts. Each color filter part corresponds to one through hole, and each color filter part is partially located in the corresponding through hole and partially located on the side, away from the substrate, of the insulating layer. The color filter layer comprises a first color filter part and a second color filter part, and the leveling property of the material of the second color filter part is superior to that of the material of the first color filter part. In a surface of the insulating layer away from the substrate, at least a portion of a region in contact with the at least one first color filter portion is recessed toward the substrate relative to at least a portion of a region in contact with the at least one second color filter portion. The shading layer is at least partially located on the side, away from the substrate, of the color filter layer.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display substrate and a display device. Background Technology

[0002] OLED (Organic Light-Emitting Diode) has advantages such as self-illumination, high efficiency, vivid colors, thinness and energy saving, and wide operating temperature range, and has been gradually applied to large-area displays, lighting and automotive displays. Summary of the Invention

[0003] This application provides a display substrate and a display device.

[0004] According to a first aspect of the embodiments of this application, a display substrate is provided. The display substrate includes:

[0005] Substrate;

[0006] A light-emitting layer is located on the substrate; the light-emitting layer includes a plurality of sub-pixels arranged at intervals;

[0007] An insulating layer is located on the side of the light-emitting layer away from the substrate; the insulating layer has multiple through holes;

[0008] A color filter layer is located on the side of the light-emitting layer away from the substrate. The color filter layer includes a plurality of color filter portions. Each color filter portion corresponds to a via. Each color filter portion is partially located within the corresponding via and partially located on the side of the insulating layer away from the substrate. The color filter layer includes a first color filter portion and a second color filter portion. The leveling property of the material of the second color filter portion is better than that of the material of the first color filter portion. In the surface of the insulating layer away from the substrate, at least a portion of the area in contact with at least one first color filter portion is recessed toward the substrate relative to at least a portion of the area in contact with at least one second color filter portion.

[0009] A light-shielding layer, at least partially located on the side of the color filter layer away from the substrate; the light-shielding layer has a plurality of openings, the orthographic projection of each opening on the substrate falling within the orthographic projection of one of the color filters on the substrate.

[0010] In one embodiment, the surface of the insulating layer away from the substrate is provided with at least one first recess; each first recess is disposed on the periphery of the through hole corresponding to a first color filter, and the orthographic projection of each first recess on the substrate falls within the orthographic projection of the corresponding first color filter on the substrate; the area of ​​the surface of the insulating layer away from the substrate that contacts at least one second color filter is planar.

[0011] In one embodiment, the insulating layer has at least one first protrusion and at least one first recess on its surface away from the substrate; each first recess is disposed on the periphery of the through hole corresponding to a first color filter, and the orthographic projection of each first recess on the substrate falls within the orthographic projection of the corresponding first color filter on the substrate; each first protrusion is disposed on the periphery of the through hole corresponding to a second color filter, and the orthographic projection of each first protrusion on the substrate falls within the orthographic projection of the corresponding second color filter on the substrate.

[0012] In one embodiment, the color filter further includes a third color filter, wherein the leveling property of the material of the third color filter is between that of the material of the first color filter and that of the material of the second color filter.

[0013] The insulating layer is further provided with at least one second recess on the surface away from the substrate; each second recess is disposed on the periphery of the through hole corresponding to the third color filter, and the orthographic projection of each second recess on the substrate falls within the orthographic projection of the corresponding third color filter on the substrate; the volume of each first recess is greater than the volume of each second recess.

[0014] In one embodiment, the depth of each first recess and the depth of each second recess are the same, and the area of ​​the orthographic projection of each first recess on the substrate is greater than the area of ​​the orthographic projection of each second recess on the substrate.

[0015] In one embodiment, the area of ​​the orthographic projection of each of the first recesses on the substrate is the same as the area of ​​the orthographic projection of each of the second recesses on the substrate, and the depth of each of the first recesses is greater than the depth of each of the second recesses.

[0016] In one embodiment, each of the first recesses and / or each of the second recesses is annular and surrounds the corresponding through hole; or, each of the first recesses and / or each of the second recesses includes a plurality of spaced grooves, with the grooves of the same recess arranged spaced along the corresponding through hole.

[0017] In one embodiment, the color filter further includes a third color filter, wherein the leveling property of the material of the third color filter is between that of the material of the first color filter and that of the material of the second color filter.

[0018] The area where the surface of the insulating layer away from the substrate contacts at least one of the third color filters is planar.

[0019] In one embodiment, the surface of the insulating layer away from the substrate is provided with at least one first protrusion; each first protrusion is disposed on the periphery of the through hole corresponding to a second color filter, and the orthographic projection of each first protrusion on the substrate falls within the orthographic projection of the corresponding second color filter on the substrate; the area of ​​the surface of the insulating layer away from the substrate that contacts at least one first color filter is a plane.

[0020] In one embodiment, the color filter further includes a third color filter, wherein the leveling property of the material of the third color filter is between that of the material of the first color filter and that of the material of the second color filter.

[0021] The insulating layer has at least one first protrusion and at least one second protrusion on its surface away from the substrate; each first protrusion is disposed on the periphery of the through hole corresponding to a second color filter, and the orthographic projection of each first protrusion on the substrate falls within the orthographic projection of the corresponding second color filter on the substrate; each second protrusion is disposed on the periphery of the through hole corresponding to a third color filter, and the orthographic projection of each second protrusion on the substrate falls within the orthographic projection of the corresponding third color filter on the substrate; the volume of each first protrusion is greater than the volume of each second protrusion.

[0022] In one embodiment, each of the first protrusions and / or each of the second protrusions is annular and surrounds the corresponding through hole; or, each of the first protrusions and / or each of the second protrusions includes a plurality of spaced-apart protrusion structures, with the protrusion structures of the same protrusion spaced along the corresponding through hole.

[0023] In one embodiment, the height of each of the first protrusions is the same as that of each of the second protrusions.

[0024] In one embodiment, each of the first protrusions and each of the second protrusions includes a plurality of protrusion structures arranged at intervals.

[0025] The protruding structure of each first protrusion has the same volume as the protruding structure of each second protrusion, and the number of protruding structures in each first protrusion is greater than the number of protruding structures in each second protrusion; or, the number of protruding structures in each first protrusion is the same as the number of protruding structures in each second protrusion, and the volume of the protruding structure of each first protrusion is greater than the volume of the protruding structure of each second protrusion.

[0026] In one embodiment, the surface of each first protrusion away from the substrate has the same shape as the surface of each second protrusion away from the substrate, the area of ​​the orthographic projection of each first protrusion on the substrate is the same as the area of ​​the orthographic projection of each second protrusion on the substrate, and the height of each first protrusion is greater than the height of each second protrusion.

[0027] In one embodiment, the insulating layer has at least one protrusion on its surface away from the substrate; each protrusion is located around the periphery of a through hole corresponding to a color filter; the orthographic projection of each protrusion on the substrate falls within the orthographic projection of the corresponding color filter on the substrate; at least one of the protrusions has a non-planar surface away from the substrate.

[0028] In one embodiment, the portions of the surfaces of each color filter that contact the light-shielding layer are substantially on the same plane.

[0029] In one embodiment, the refractive index of the insulating layer is less than the refractive index of each of the color filters.

[0030] In one embodiment, each of the color filter portions includes a main body portion, and each main body portion is partially located within one of the through holes; at least one of the color filter portions includes a protrusion connected to the main body portion, and each protrusion portion is located between two adjacent main body portions.

[0031] In one embodiment, at least one protrusion is provided on the side surface of at least one through hole of the insulating layer, the protrusion extending toward the center of the through hole.

[0032] In one embodiment, the side surface of the protrusion is conical or cylindrical, or the cross-section of the protrusion structure parallel to the substrate is semi-elliptical.

[0033] In one embodiment, each of the color filter portions includes a main body portion, and each main body portion is partially located within one of the through holes; at least one of the color filter portions includes a protrusion connected to the main body portion, and each protrusion portion is located between two adjacent main body portions; the side surface of at least one through hole of the insulating layer is provided with a plurality of spaced protrusion structures.

[0034] The axis passing through the center of the color filter where the protrusion is located is the first axis, and the axis passing through the center of the through hole where the protrusion is located is the second axis; the first axis of the protrusion is at the same angle as the second axis of the two protrusions adjacent to the protrusion in the corresponding through hole.

[0035] In one embodiment, the edge of the orthogonal projection of the bottom surface of each of the through holes onto the substrate is a first edge, and the edge of the orthogonal projection of each of the color filters onto the substrate is a second edge, with the first edge located inside the corresponding second edge.

[0036] In one embodiment, the display substrate further includes a pixel defining layer located between the substrate and the insulating layer; the pixel defining layer has a plurality of pixel openings, at least a portion of each sub-pixel is located within one of the pixel openings; the edge of each through-hole facing the orthogonal projection of the bottom surface of the substrate on the substrate is a first edge, and the edge of each pixel opening facing the orthogonal projection of the bottom surface of the substrate on the substrate is a third edge, the third edge being located inside the corresponding first edge.

[0037] In one embodiment, the edge of the orthogonal projection of the bottom surface of each of the through holes onto the substrate is a first edge, and the edge of the orthogonal projection of each of the openings onto the substrate is a fourth edge, the fourth edge being located outside the corresponding first edge.

[0038] In one embodiment, the color filter layer includes at least three different color filter sections, wherein all color filter sections of one color are integrally formed.

[0039] In one embodiment, the display substrate further includes a touch structure layer located between the light-emitting layer and the color filter layer. The touch structure layer includes a first touch electrode layer, a second touch electrode layer located on the side of the first touch electrode layer away from the substrate, an insulating material layer located between the first touch electrode layer and the second touch electrode layer, and an insulating protective layer on the side of the second touch electrode layer away from the substrate.

[0040] The insulating layer is reused as the insulating protective layer, and the insulating layer covers the second touch electrode layer.

[0041] In one embodiment, the display substrate further includes an encapsulation layer located between the light-emitting layer and the color filter layer; and / or,

[0042] The display substrate also includes a protective layer located on the side of the light-shielding layer away from the substrate.

[0043] According to a second aspect of the present application, a display device is provided, the display device including the display substrate described above.

[0044] The display substrate and display device provided in this application embodiment have the advantage that the material of the second color filter has better flowability than the material of the second color filter. In the surface of the insulating layer away from the substrate, at least a portion of the area in contact with the first color filter is recessed toward the substrate relative to at least a portion of the area in contact with the second color filter. This reduces the discontinuity between the surface of the first color filter in contact with the insulating layer away from the substrate and the surface of the second color filter in contact with the insulating layer away from the substrate. This improves the problem that the light-shielding layer breaks or separates from adjacent film layers due to the large discontinuity of the surfaces of different color filters away from the substrate, and helps to improve the yield of the display substrate. Attached Figure Description

[0045] Figure 1 This is a partial schematic diagram obtained by cutting a display substrate along a direction perpendicular to the stacking direction of the film layers according to an exemplary embodiment of this application;

[0046] Figure 2 yes Figure 1 The diagram shows a partial schematic of some film layers on the display substrate.

[0047] Figure 3 This is a partial schematic diagram obtained by cutting a display substrate along a direction perpendicular to the stacking direction of the film layers, according to another exemplary embodiment of this application.

[0048] Figure 4 yes Figure 3 The diagram shows a partial schematic of some film layers on the display substrate.

[0049] Figure 5 This is a partial schematic diagram obtained by cutting a display substrate along a direction perpendicular to the stacking direction of the film layers, according to another exemplary embodiment of this application.

[0050] Figure 6 yes Figure 5 The diagram shows a partial schematic of some film layers on the display substrate.

[0051] Figure 7 This is a partial schematic diagram obtained by cutting a display substrate along a direction perpendicular to the stacking direction of the film layers, according to another exemplary embodiment of this application.

[0052] Figure 8 yes Figure 7 The diagram shows a partial schematic of some film layers on the display substrate.

[0053] Figure 9This is a partial schematic diagram obtained by cutting a display substrate along a direction perpendicular to the stacking direction of the film layers, according to another exemplary embodiment of this application.

[0054] Figure 10 yes Figure 9 The diagram shows a partial schematic of some film layers on the display substrate.

[0055] Figure 11 This is a partial schematic diagram obtained by cutting a display substrate along a direction perpendicular to the stacking direction of the film layers, according to another exemplary embodiment of this application.

[0056] Figure 12 yes Figure 11 The diagram shows a partial schematic of some film layers on the display substrate.

[0057] Figure 13 This is a partial schematic diagram obtained by cutting a display substrate along a direction perpendicular to the stacking direction of the film layers, according to another exemplary embodiment of this application.

[0058] Figure 14 yes Figure 13 The diagram shows a partial schematic of some film layers on the display substrate.

[0059] Figure 15 This is a partial schematic diagram obtained by cutting a display substrate along a direction perpendicular to the stacking direction of the film layers, according to another exemplary embodiment of this application.

[0060] Figure 16 yes Figure 15 The diagram shows a partial schematic of some film layers on the display substrate.

[0061] Figure 17 This is a partial schematic diagram obtained by cutting a display substrate along a direction perpendicular to the stacking direction of the film layers, according to another exemplary embodiment of this application.

[0062] Figure 18 yes Figure 17 The diagram shows a partial schematic of some film layers on the display substrate.

[0063] Figure 19 This is a partial structural schematic diagram of a mask provided in an exemplary embodiment of this application;

[0064] Figure 20 This is a partial structural schematic diagram of a mask provided in another exemplary embodiment of this application;

[0065] Figure 21 This is a top view of the layout of the color filter layer in a display substrate provided in an exemplary embodiment of this application;

[0066] Figure 22This is a top view of the layout of the color filter layer in a display substrate provided in another exemplary embodiment of this application;

[0067] Figure 23 yes Figure 21 A diagram showing the positional relationship between the color filter layer and the insulating layer in a display substrate;

[0068] Figure 24 yes Figure 22 A diagram showing the positional relationship between the color filter layer and the insulating layer in a display substrate;

[0069] Figure 25 yes Figure 21 A magnified view of a portion of the color filter layer shown;

[0070] Figure 26 yes Figure 22 A magnified view of a portion of the color filter layer shown. Detailed Implementation

[0071] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other. When the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0072] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movement of the components in a specific posture; if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0073] A display substrate includes a light-emitting layer, an insulating layer, a color filter layer, and a light-shielding layer located on the light-emitting layer. The insulating layer has multiple through-holes; the color filter layer includes color filter portions of various colors, each color filter portion partially located within a through-hole and partially located on the side of the insulating layer away from the light-emitting layer; the light-shielding layer is located on the side of the color filter layer away from the substrate. The color filter layer is typically prepared using a coating process. The leveling properties of the materials for different colors of color filters vary. Better leveling properties result in a smaller thickness of the portion of the color filter on the insulating layer, while poorer leveling properties result in a larger thickness of the portion of the color filter on the insulating layer. This leads to differences in the thickness of the portions of different colors of color filters on the insulating layer, creating discontinuities, which in turn causes the light-shielding layer formed on the color filter layer to break or separate from adjacent film layers.

[0074] This application provides a display substrate and a display device that can solve the above-mentioned problems.

[0075] This application provides a display substrate. The display substrate includes a substrate 10, a light-emitting layer 20, an insulating layer 70, a color filter layer 40, and a light-shielding layer 50.

[0076] The light-emitting layer 20 is located on the substrate 10, and the light-emitting layer 20 includes a plurality of spaced sub-pixels 21. The insulating layer 70 is located on the side of the light-emitting layer 20 away from the substrate 10; the insulating layer 70 has a plurality of through holes 71. The color filter layer 40 is located on the side of the light-emitting layer 20 away from the substrate 10, and the color filter layer 40 includes a plurality of color filter portions 41. Each color filter portion 41 corresponds to one of the through holes 71, and each color filter portion 41 is partially located within the corresponding through hole 71 and partially located on the side of the insulating layer 70 away from the substrate 10. The color filter layer includes a first color filter portion 411 and a second color filter portion 412, wherein the leveling property of the material of the second color filter portion 412 is better than that of the material of the first color filter portion 411. At least a portion of the area of ​​the insulating layer 70 on the surface away from the substrate 10 that contacts at least one of the first color filter portions 411 is recessed toward the substrate 10 relative to at least a portion of the area that contacts at least one of the second color filter portions 412. The light-shielding layer 50 is at least partially located on the side of the color filter layer 40 away from the substrate 10; the light-shielding layer 50 has a plurality of openings 51, the orthographic projection of each opening 51 onto the substrate 10 falling within the orthographic projection of one of the color filter portions 41 onto the substrate 10.

[0077] The display substrate provided in this application embodiment has a better leveling property than the material of the second color filter 411. In the surface of the insulating layer 70 away from the substrate 10, at least a portion of the area in contact with the first color filter 411 is recessed towards the substrate 10 relative to at least a portion of the area in contact with the second color filter 412. This reduces the discontinuity between the portion of the first color filter 411 in contact with the insulating layer 70 away from the substrate and the portion of the second color filter 412 in contact with the insulating layer 70 away from the substrate. The small size can improve the problem of light-shielding layer breakage or separation of light-shielding layer from adjacent film layers caused by large discontinuity of the color filter section of different colors away from the substrate, which helps to improve the yield of display substrate. By setting the light-shielding layer 50 on the side of the color filter layer 40 away from the substrate, it helps to improve the dark state effect of the display substrate in non-display state. By setting the color filter layer 40, the color filter layer 40 can filter the incident external ambient light, reduce the amount of incident ambient light reflection, and reduce the loss of emitted light compared with polarizer, thus improving light extraction efficiency.

[0078] It should be noted that the cross-sectional view involved in the embodiments of this application is a partial schematic diagram obtained by cutting the display substrate along a direction perpendicular to the substrate.

[0079] In one embodiment, the substrate 10 can be a flexible substrate or a rigid substrate. The flexible substrate may be made of one or more of polyimide, polyethylene terephthalate, polycarbonate, and organic resin materials, including epoxy resin, triazine, silicone resin, or polyimide. The rigid substrate may include any one of glass substrates, quartz substrates, sapphire substrates, etc.

[0080] In one embodiment, such as Figure 1 As shown, the display substrate further includes a driving circuit layer 60 located between the substrate 10 and the light-emitting layer 20. The driving circuit layer 60 includes a plurality of pixel circuits, which are used to drive sub-pixels 21. The pixel circuits and sub-pixels 21 can correspond one-to-one, and each pixel circuit is used to drive the corresponding sub-pixel 21.

[0081] In one embodiment, such as Figure 1 As shown, the sub-pixel 21 includes a first electrode 211, a light-emitting material layer 212 located on the side of the first electrode 211 away from the substrate 10, and a second electrode 213 located on the side of the light-emitting material layer 212 away from the substrate 10. One of the first electrode 211 and the second electrode 213 is an anode, and the other is a cathode. Figure 1The first electrode 211 is the anode, the second electrode 213 is the cathode, the cathode is a common electrode, and the cathodes of all sub-pixels 21 are connected to form a surface electrode. In some embodiments, the light-emitting material layer 212 is an organic light-emitting material layer, and the sub-pixels 21 are OLEDs.

[0082] In one embodiment, such as Figure 1 As shown, the pixel circuit may include a thin-film transistor 61 and a capacitor 62. The thin-film transistor 61 may include an active layer 611, a gate 612, a first electrode 613, and a second electrode 614. One of the first electrode 613 and the second electrode 614 is the source, and the other is the drain. The capacitor 62 includes a first electrode plate 621 and a second electrode plate 622 disposed opposite to each other. The pixel circuit layer may also include multiple signal lines, such as scan signal lines, data signal lines, power signal lines, etc.

[0083] In one embodiment, such as Figure 1 As shown, the gate 612 and the first electrode 621 of the capacitor 62 are located on the same layer. The second electrode 622 of the capacitor 62 is located on the side of the first electrode 621 away from the substrate 10. The first electrode 613 and the second electrode 614 of the thin-film transistor 61 are located on the same layer, and the second electrode 622 is located on the side away from the substrate 10. The driving circuit layer 60 also includes a gate insulating layer 63 located between the active layer 611 and the gate 612, a capacitor insulating layer 64 located between the gate 612 and the second electrode 622, an interlayer dielectric layer 65 located between the second electrode 622 and the first electrode 613, and a planarization layer 66 located between the first electrode 613 and the first electrode 211. The first electrode 211 is electrically connected to the second electrode 614 through a via penetrating the planarization layer 66. The first electrode 613 and the second electrode 614 are in contact with the active layer 611 through vias penetrating the interlayer dielectric layer 65, the capacitor insulating layer 64, and the gate insulating layer 63, respectively.

[0084] In one embodiment, the light-emitting layer 20 includes at least three sub-pixels 21 with different emission colors. Each sub-pixel 21 corresponds one-to-one with a color filter 41, and the orthographic projection of each sub-pixel 21 onto the substrate 10 falls within the orthographic projection of the corresponding color filter 41 onto the substrate 10. The emission color of each sub-pixel 21 is the same as the color of the corresponding color filter 41 in the color filter layer 40. For example, the light-emitting layer 20 includes sub-pixels with a first emission color, sub-pixels with a second emission color, and sub-pixels with a third emission color; the color filter layer 40 includes a first color filter 411, a second color filter 412, and a third color filter 413.

[0085] In some embodiments, the first color may be red, the second color may be blue, and the third color may be green. That is, the light-emitting layer 20 may include sub-pixels with a red light-emitting color, sub-pixels with a green light-emitting color, and sub-pixels with a blue light-emitting color, and the color filter layer 40 may include a red filter, a blue filter, and a green filter.

[0086] In one embodiment, such as Figure 1 As shown, the light-emitting layer 20 further includes a pixel defining layer 22, which has a plurality of pixel openings 221. The pixel defining layer 22 is located on the side of the first electrode 211 away from the substrate 10. Each pixel opening 221 corresponds to a sub-pixel 21, and each pixel opening 221 exposes at least a portion of the corresponding first electrode 211. At least a portion of the light-emitting material layer 212 of each sub-pixel 21 is located within the pixel opening 221. At least a portion of the second electrode 213 is located on the side of the pixel defining layer 22 away from the substrate 10. Each pixel opening 221 defines the light-emitting area of ​​the corresponding sub-pixel 21; specifically, the area defined by the pixel opening 221 facing the bottom surface of the substrate 10 is the light-emitting area of ​​the sub-pixel 21.

[0087] In one embodiment, such as Figure 1 As shown, in the direction of the substrate 10 pointing towards the second electrode 213, the side of the pixel opening 221 extends obliquely outward. The pixel defining layer 22 can be formed using an exposure and development process, resulting in the shape of the formed pixel opening 221.

[0088] In one embodiment, such as Figure 1 As shown, the display substrate further includes an encapsulation layer 30 located between the light-emitting layer 20 and the insulating layer 70. The color filter layer 40 and the light-shielding layer 50 are both located on the side of the encapsulation layer 30 away from the substrate 10. The encapsulation layer 30 may be a thin-film encapsulation layer, comprising alternating organic and inorganic layers, with the inorganic layer having the greatest distance from the substrate 10. In some embodiments, the thin-film encapsulation layer may include two inorganic layers and an organic layer located between the two inorganic layers.

[0089] In one embodiment, such as Figure 1As shown, the display substrate further includes a touch structure layer 80 located between the encapsulation layer 30 and the color filter layer 40. The touch structure layer 80 includes a first touch electrode layer 83, a second touch electrode layer 81 located on the side of the first touch electrode layer 83 away from the substrate 10, an insulating material layer 84 located between the first touch electrode layer 83 and the second touch electrode layer 81, and an insulating protective layer 86 located on the side of the second touch electrode layer 81 away from the substrate 10. The insulating protective layer 86 covers the second touch electrode layer 81. The second touch electrode layer 81 may include a plurality of first touch electrodes, a plurality of second touch electrodes, and a plurality of first connecting portions. The first touch electrode layer 83 includes a plurality of second connecting portions. Adjacent first touch electrodes can be connected through the first connecting portions, and adjacent second touch electrodes can be electrically connected through the second connecting portions. The materials of the insulating protective layer 86 and the insulating material layer 84 may be organic materials, and the surface flatness of the insulating protective layer 86 and the insulating material layer 84 away from the substrate 10 is relatively good. In some embodiments, the materials of the insulating protective layer 86 and the insulating material layer 84 may be organic resins.

[0090] In one embodiment, in the direction of the substrate 10 pointing towards the insulating layer 70, the sides of each through-hole 71 of the insulating layer 70 extend obliquely outward. The through-holes 71 of the insulating layer 70 can be formed by an exposure and development process, resulting in the shape of the formed through-holes 71.

[0091] Furthermore, the refractive index of the insulating layer 70 is less than that of the color filter 41. With this configuration, when light emitted from the sub-pixel 21 is incident on the side of the through-hole 71 of the insulating layer 70 via the color filter 41, most of the light undergoes total internal reflection at the side of the through-hole 71 and exits through the light-shielding layer 50, thereby helping to reduce light loss and improve the light extraction efficiency of the display substrate. In some embodiments, the refractive index of the insulating layer 70 ranges from 1.4 to 1.55, and the refractive index of the color filter 41 ranges from 1.6 to 1.7. This larger difference in refractive index between the color filter 41 and the insulating layer 70 improves the total internal reflection efficiency of light incident on the side of the through-hole 71 of the insulating layer 70.

[0092] In one embodiment, such as Figure 1 As shown, the insulating layer 70 is reused as an insulating protective layer 86. This helps to reduce the thickness of the display substrate. In other embodiments, the insulating layer 70 and the insulating protective layer 86 are different film layers, with the insulating layer 70 located on the side of the insulating protective layer 86 away from the substrate 10.

[0093] In one embodiment, such as Figure 1As shown, the display substrate further includes a protective layer 85 located on the side of the light-shielding layer 50 away from the substrate 10. The protective layer 85 covers the side of the opening 51 of the light-shielding layer 50 and the surface of the light-shielding layer 50 away from the substrate 10. The material of the protective layer 85 may be an organic resin.

[0094] In one embodiment, such as Figure 1 As shown, the color filter layer 40 further includes a third color filter portion 413, the leveling property of which is between that of the material of the first color filter portion 411 and the material of the second color filter portion 412. In some embodiments, the first color is red, the second color is blue, and the third color is green. In other embodiments, the first color is blue, the second color is red, and the third color is green.

[0095] In one embodiment, at least a portion of the area of ​​the insulating layer 70 on the surface away from the substrate 10 that contacts each of the first color filter portions 411 is recessed toward the substrate 10 relative to at least a portion of the area that contacts each of the second color filter portions 412. This further helps to mitigate the problems of breakage and separation of the light-shielding layer 50 from adjacent film layers.

[0096] In one embodiment, such as Figures 1 to 4 As shown, the insulating layer 70 has at least one first recess 73 on its surface away from the substrate; each first recess 73 is disposed around the periphery of the through hole 71 corresponding to a first color filter 411, and the orthographic projection of each first recess 73 on the substrate 10 falls within the orthographic projection of the corresponding first color filter 411 on the substrate 10; the area of ​​the insulating layer 70 away from the substrate 10 that contacts at least one second color filter 412 is planar 701. In the insulating layer 70, the area in contact with at least one second color filter 412 is planar, and the area in contact with at least one first color filter 411 has a first recess 73. Thus, the portion of the insulating layer 70 in the area in contact with the first color filter 411 is recessed relative to the area in contact with the second color filter 412 towards the substrate 10. The first recess 73 can accommodate part of the material of the first color filter 411, thereby reducing the height of the part of the first color filter 411 that contacts the insulating layer 70 away from the surface of the substrate 10, thereby reducing the discontinuity between the first color filter 411 and the second color filter 412 away from the surface of the substrate.

[0097] Furthermore, on the surface of the insulating layer 70 away from the substrate 10, the areas in contact with each of the second color filter portions 412 are planar, and the areas in contact with each of the first color filter portions 411 are provided with first recesses 73, and the volumes of each first recess 73 can be substantially the same. This further helps to improve the problem of the light-shielding layer 50 breaking and separating from adjacent film layers.

[0098] In one embodiment, such as Figures 5 to 10 As shown, the insulating layer 70 has at least one first protrusion 74 and at least one first recess 73 on its surface away from the substrate 10. Each first recess 73 is disposed around the periphery of a through-hole 71 corresponding to a first color filter 411, and the orthographic projection of each first recess 73 on the substrate 10 falls within the orthographic projection of the corresponding first color filter 411 on the substrate 10. Each first protrusion 74 is disposed around the periphery of a through-hole 71 corresponding to a second color filter 412, and the orthographic projection of each first protrusion 74 on the substrate falls within the orthographic projection of the corresponding second color filter 412 on the substrate 10. In the surface of the insulating layer 70 away from the substrate 10, the area in contact with at least one second color filter 412 has a first protrusion 74, and the area in contact with at least one first color filter 411 has a first recess 73. The area of ​​the insulating layer 70 in contact with the first color filter 411 is recessed relative to the area in contact with the second color filter 412 in the direction toward the substrate 10. The first recess 73 can accommodate part of the material of the first color filter 411, thereby reducing the height of the part of the first color filter 411 that contacts the insulating layer 70 away from the surface of the substrate 10. The first protrusion 74 can increase the height of the part of the second color filter 412 that contacts the insulating layer 70 away from the surface of the substrate 10, thereby effectively reducing the discontinuity between the surfaces of the first color filter 411 and the second color filter 412 away from the substrate.

[0099] Furthermore, on the surface of the insulating layer 70 away from the substrate 10, the area in contact with each of the second color filter portions 412 is provided with a first protrusion 74, and the area in contact with each of the first color filter portions 411 is provided with a first recess 73. The volume of each first protrusion 74 can be substantially the same, and the volume of each first recess 73 can be substantially the same. This further helps to improve the problem of the light-shielding layer 50 breaking and separating from adjacent film layers.

[0100] In one embodiment, such as Figures 1 to 4 , Figure 9 and Figure 10As shown, the insulating layer 70 has at least one second recess 72 on its surface away from the substrate 10; each second recess 72 is disposed around the periphery of the through hole 71 corresponding to the third color filter 413, and the orthographic projection of each second recess 72 on the substrate falls within the orthographic projection of the corresponding third color filter 413 on the substrate 10; the volume of the first recess 73 is greater than the volume of the second recess 72. By setting the volume of the first recess 73 to be greater than the volume of the second recess 72, the amount of material of the first color filter 411 contained in the first recess 73 is greater than the amount of material of the second color filter 412 contained in the second recess 72, which reduces the discontinuity between the surfaces of the first color filter 411 and the second color filter 412 away from the substrate.

[0101] In some embodiments, on the surface of the insulating layer 70 away from the substrate 10, a first recess 73 is provided in the area contacting each of the first color filter portions 411, and a second recess 72 is provided in the area contacting each of the third color filter portions 413. The volumes of the first recesses 73 and the second recesses 72 can be substantially the same. This helps to improve the problem of breakage of the light-shielding layer 50 and separation from adjacent film layers.

[0102] In one embodiment, each of the first recesses 73 and each of the second recesses 72 has the same depth, and the area of ​​the orthographic projection of each of the first recesses 73 onto the substrate 10 is greater than the area of ​​the orthographic projection of each of the second recesses 72 onto the substrate 10. Figure 2 and Figure 10 In the illustrated embodiment, the depth of both the first recess 73 and the second recess 72 is h1. This arrangement allows the volume of the first recess 73 to be larger than the volume of the second recess 72. Since the first recess 73 and the second recess 72 have the same depth, when the insulating layer 70 is prepared using an exposure and development process, the light transmittance of the mask and the corresponding areas of the first and second recesses 73 and 72 is the same, which helps to reduce the cost of the mask. The first recess 73 and the second recess 72 prepared using the exposure and development process have the same shape, with their sides extending obliquely outward in the direction from the substrate 10 to the light-shielding layer 50.

[0103] In one embodiment, the area of ​​the orthographic projection of each of the first recesses 73 onto the substrate 10 is the same as the area of ​​the orthographic projection of each of the second recesses 72 onto the substrate 10, and the depth of each of the first recesses 73 is greater than the depth of each of the second recesses 72. Figure 4In the illustrated embodiment, the depth h2 of the first recess 73 is greater than the depth h3 of the second recess 72. This arrangement allows the volume of the first recess 73 to be greater than the volume of the second recess 72. In other embodiments, the depth and the area of ​​the orthographic projection onto the substrate 10 of the second recess 72 are different from those of the first recess 73. In some embodiments, h2 ranges from 0.3 μm to 0.7 μm, and h3 ranges from 0.2 μm to 0.5 μm. For example, h2 is 0.5 μm and h3 is 0.3 μm.

[0104] In one embodiment, each of the first recesses 73 and / or each of the second recesses 72 is annular, surrounding the corresponding through hole 71. When the first recess 73 is annular, the surface flatness of the portion of the first color filter 411 corresponding to the first recess 73 located on the insulating layer 70 is better; when the second recess 72 is annular, the surface flatness of the portion of the third color filter 413 corresponding to the second recess 72 located on the insulating layer 70 is better. In some embodiments, both the first recess 73 and the second recess 72 are annular.

[0105] In one embodiment, each of the first recesses 73 and / or each of the second recesses 72 includes a plurality of spaced-apart grooves, with the grooves of the same recess arranged at intervals along the corresponding through-holes 71. In some embodiments, each of the first recesses 73 and each of the second recesses 72 includes a plurality of spaced-apart grooves.

[0106] In one embodiment, such as Figures 5 to 8 As shown, on the surface of the insulating layer 70 away from the substrate, the area in contact with at least one of the third color filter portions 413 is a plane 703, the area in contact with at least one of the first color filter portions 411 is provided with a first recess 73, and the area in contact with at least one of the second color filter portions 412 is provided with a first protrusion 74.

[0107] In one embodiment, such as Figure 7 and Figure 8 As shown, the first protrusion 74 includes a main body 742 and a plurality of spaced protrusion structures 743 located on the side of the main body 742 away from the substrate 10. The main body 742 is spaced along the corresponding through holes 71. Figure 9 and Figure 10 In the illustrated embodiment, the first protrusion 74 includes a plurality of spaced-apart protrusions 741 surrounding the corresponding through-hole 71. This configuration results in a larger surface roughness of the first protrusion 74 away from the substrate 10, which increases the dwell time of the material of the second color filter on the top surface of the insulating layer 70, further reducing the discontinuity between the surface of the first color filter away from the substrate and the surface of the second color filter away from the substrate.

[0108] In one embodiment, such as Figures 11 to 18 As shown, the insulating layer 70 has at least one first protrusion 74 on its surface away from the substrate 10; each first protrusion 74 is disposed on the periphery of the through hole 71 corresponding to a second color filter 412, and the orthographic projection of each first protrusion 74 on the substrate 10 falls within the orthographic projection of the corresponding second color filter 412 on the substrate 10; the area of ​​the insulating layer 70 away from the substrate 10 that contacts at least one first color filter 411 is a plane 702. The first protrusion 74 increases the height of the portion of the second color filter 412 that contacts the insulating layer 70 away from the substrate 10, effectively reducing the discontinuity between the second color filter 412 and the first color filter 411 away from the substrate.

[0109] Furthermore, on the surface of the insulating layer 70 away from the substrate 10, the area in contact with each of the second color filter portions 412 is provided with a first protrusion 74, and the volume of each first protrusion 74 can be substantially the same, while the area in contact with each of the first color filter portions 411 is a plane 702. This further helps to improve the problem of the light-shielding layer 50 breaking and separating from adjacent film layers.

[0110] In one embodiment, such as Figures 11 to 18 As shown, the insulating layer 70 has at least one second protrusion 75 on its surface away from the substrate 10; each second protrusion 75 is disposed around the periphery of the through hole 71 corresponding to the third color filter 413, and the orthographic projection of each second protrusion 75 on the substrate 10 falls within the orthographic projection of the corresponding third color filter 413 on the substrate 10; the volume of each first protrusion 74 is greater than the volume of each second protrusion 75. By setting the volume of the first protrusion 74 to be greater than the volume of the second protrusion 75, the volume difference between the first protrusion 74 and the second protrusion 75 can balance the height difference between the surfaces of the second color filter 412 and the third color filter 413 away from the substrate 10 caused by the difference in the leveling properties of their materials, effectively reducing the discontinuity between the surfaces of the second color filter 412 and the third color filter 413 away from the substrate.

[0111] In one embodiment, each of the first protrusions 74 and / or each of the second protrusions 75 is annular, surrounding the corresponding through hole 71. When the first protrusion 74 is annular, the surface flatness of the portion of the second color filter portion 412 corresponding to the first protrusion 74 located on the insulating layer 70 is better; when the second protrusion 75 is annular, the surface flatness of the portion of the third color filter portion 413 corresponding to the second protrusion 75 located on the insulating layer 70 is better. In some embodiments, both the first protrusion 74 and the second protrusion 75 are annular.

[0112] In one embodiment, each of the first protrusions 74 and / or each of the second protrusions 75 includes a plurality of spaced-apart protrusions, with the protrusions of the same protrusion spaced-apart along the corresponding through hole 71. Figure 15 and Figure 16 In the illustrated embodiment, the first protrusion 74 includes a plurality of spaced-apart protrusions 741, and the second protrusion 75 includes a plurality of spaced-apart protrusions 751. The surface of the protrusion including the protrusions has a higher roughness away from the substrate, which helps to increase the residence time of the material of the color filter on the top surface of the insulating layer, thereby reducing the discontinuity between it and the surface of the first color filter away from the substrate. The protrusions 741 and 751 may be annular, surrounding the corresponding through-hole 71.

[0113] In one embodiment, the height of each of the first protrusions 74 and the height of each of the second protrusions 75 are the same. With this configuration, when the first protrusions 74 and the second protrusions 75 are fabricated using an exposure and development process, the light transmittance of the mask is the same for the areas corresponding to the first protrusions 74 and the second protrusions 75, which helps to reduce the cost of the mask.

[0114] In one embodiment, such as Figure 11 and Figure 12 As shown, the surfaces of the first protrusion 74 and the second protrusion 75 away from the substrate 10 are both planar. The heights of the first protrusion 74 and the second protrusion 75 are both d1. The area of ​​the orthographic projection of the first protrusion 74 onto the substrate 10 is greater than the area of ​​the orthographic projection of the second protrusion 75 onto the substrate 10. This allows the volume of the first protrusion 74 to be greater than the volume of the second protrusion 75.

[0115] In one embodiment, the surface of each first protrusion 74 away from the substrate 10 has the same shape as the surface of each second protrusion 75 away from the substrate 10, the area of ​​the orthographic projection of each first protrusion 74 onto the substrate and the area of ​​the orthographic projection of each second protrusion 75 onto the substrate 10 are the same, and the height of each first protrusion 74 is greater than the height of each second protrusion 75. This allows the volume of the first protrusion 74 to be greater than the volume of the second protrusion 75. Figure 13 and Figure 14 As shown, the surfaces of the first protrusion 74 and the second protrusion 75 away from the substrate 10 are both planar, and the height d2 of the first protrusion 74 is greater than the height d3 of the second protrusion 75. In this embodiment, the area of ​​the orthographic projection of the first protrusion 74 onto the substrate 10 and the area of ​​the orthographic projection of the second protrusion 75 onto the substrate 10 may be the same. In some embodiments, d2 ranges from 0.3 μm to 0.7 μm, and d3 ranges from 0.2 μm to 0.5 μm. For example, d2 is 0.5 μm and d3 is 0.3 μm.

[0116] In one embodiment, such as Figure 15 and Figure 16 As shown, each first protrusion 74 includes a plurality of spaced-apart protrusions 741, and each second protrusion 75 includes a plurality of spaced-apart protrusions 751. The protrusions 741 of each first protrusion 74 and the protrusions 751 of each second protrusion 75 have the same volume, and the number of protrusions 741 in each first protrusion 74 is greater than the number of protrusions 751 in each second protrusion 75. This allows the volume of the first protrusion 74 to be greater than the volume of the second protrusion 75. The heights of the protrusions 741 and 751 can be the same. This configuration makes the surface roughness of the first protrusion 74 away from the substrate greater than the surface roughness of the second protrusion 75 away from the substrate, thereby allowing the material of the second color filter to remain on the top surface of the insulating layer 70 for a longer time than the material of the third color filter to remain on the top surface of the insulating layer 70, which further helps to reduce the discontinuity between the surface of the second color filter away from the substrate and the surface of the third color filter away from the substrate.

[0117] In another embodiment, each first protrusion 74 includes a plurality of spaced-apart protrusions 741, and each second protrusion 75 includes a plurality of spaced-apart protrusions 751. The number of protrusions 741 in each first protrusion 74 is the same as the number of protrusions 751 in each second protrusion 75, and the volume of the protrusions 741 in each first protrusion 74 is larger than the volume of the protrusions 751 in each second protrusion 75. This arrangement allows the volume of the first protrusion 74 to be larger than the volume of the second protrusion 75. The heights of the protrusions 741 and 751 can be the same.

[0118] In one embodiment, such as Figure 17 and Figure 18As shown, the first protrusion 74 includes a main body 742 and a plurality of protrusion structures 743 located on the side of the main body 742 away from the substrate; the second protrusion 75 includes a main body 752 and a plurality of protrusion structures 753 located on the side of the main body 752 away from the substrate 10. The main body 742 and the main body 752 may have the same height, and the protrusion structures 743 and the protrusion structures 753 may have the same height. The volume of the first protrusion 74 can be made larger than the volume of the second protrusion 75 by adjusting the area of ​​the orthogonal projection of the main body 742, the main body 752, the protrusion structures 743, and the protrusion structures 753 onto the substrate 10.

[0119] In one embodiment, at least one of the first protrusions 74 and the second protrusions 75 of the insulating layer 70 has a non-planar surface away from the substrate. Setting the surface of the protrusion away from the substrate to be non-planar can increase the time that the material of the color filter stays on the top surface of the insulating layer, and further help to reduce the discontinuity between the surface of the first color filter away from the substrate and the surface of the color filter away from the substrate.

[0120] In one embodiment, the minimum distance between the top edge of the first recess 73 and the top edge of the corresponding through hole 71, the minimum distance between the top edge of the second recess 72 and the top edge of the corresponding through hole 71, and the minimum distance between the top edges of adjacent first recesses 73 and second recesses 72 are all greater than or equal to the minimum process accuracy of the exposure and development process. In some embodiments, the minimum process accuracy of the exposure and development process may be 2 μm.

[0121] In one embodiment, the minimum distance between the bottom edge of the first protrusion 74 and the top edge of the corresponding through hole 71, the minimum distance between the bottom edge of the second protrusion 75 and the top edge of the corresponding through hole 71, and the minimum distance between the bottom edges of adjacent first protrusions 74 and second protrusions 75 are all greater than or equal to the minimum process accuracy of the exposure and development process. In some embodiments, the minimum process accuracy of the exposure and development process may be 2 μm.

[0122] In one embodiment, the following can be adopted: Figure 19 and Figure 20 The mask shown is used to prepare the protrusion structure of the first protrusion 74 and the second protrusion 75. Figure 19 and Figure 20 The photomasks shown all include a light-blocking portion 91 and a light-transmitting portion 92. The size of the light-transmitting portion 92 determines the size of the raised structure, and the size of the light-transmitting portion 92 can be designed according to the size of the raised structure.

[0123] In one embodiment, such as Figures 1 to 18As shown, the portions of the surfaces of each color filter 41 that contact the light-shielding layer 50 are substantially on the same plane. This effectively avoids the problem of the light-shielding layer breaking or separating from adjacent film layers due to the different thicknesses of the color filters of different colors causing a step difference on the surface of the light-shielding layer facing the substrate.

[0124] In one embodiment, such as Figure 21 and Figure 22 As shown, each of the color filter portions 41 includes a main body portion 401, and each main body portion 401 is partially located within the corresponding through hole 71; at least one of the color filter portions 41 includes a protrusion 402 connected to the main body portion 401, and each protrusion 402 is located between two adjacent main body portions 401. This configuration reduces the gap between adjacent color filter portions 41, thereby improving the problem of color separation caused by the light-shielding layer 50 formed on the color filter portion 41 breaking due to excessive distance between adjacent color filter portions 41, resulting in diffraction of light emitted by the sub-pixel 21 at the break point of the light-shielding layer 50, and the problem of black spots appearing on the display substrate due to particles generated after the light-shielding layer 50 breaks falling onto the positions opposite the opening 51 of the color filter portion 41 and the light-shielding layer 50. Figure 19 In the embodiment shown, the first color filter portion 411 includes a plurality of protrusions 402. Figure 20 In the illustrated embodiment, the third color filter portion 413 includes a plurality of protrusions 402. In other embodiments, the color filter layer may consist of color filters of two or more colors including the protrusions 402.

[0125] In one embodiment, such as Figure 21 and Figure 22As shown, all color filter portions 41 of the color filter layer 40 are arranged in a plurality of first filter portion groups and a plurality of second filter portion groups. The plurality of first filter portion groups are arranged along a first direction Y, and the plurality of second filter portion groups are arranged along a second direction X. Each first filter portion group includes a plurality of color filter portions 41 arranged in the second direction X, and each second filter portion group includes a plurality of color filter portions 41 arranged in the first direction Y. The first direction Y intersects the second direction X. In some embodiments, the first direction Y is perpendicular to the second direction X. In some embodiments, the first direction Y is a column direction, and the second direction X is a row direction, that is, all color filter portions 41 of the color filter layer 40 are arranged in multiple rows and multiple columns. In two adjacent rows of color filters, one row has alternating arrangements of first color filters 411 and second color filters 412, while the other row consists entirely of third color filters 413. Similarly, in two adjacent columns of color filters, one column has alternating arrangements of first color filters 411 and second color filters 412, while the other column consists entirely of third color filters 413. Multiple color filters in the same row are arranged along the X-direction, and multiple color filters in the same column are arranged along the Y-direction.

[0126] In one embodiment, such as Figure 21 and Figure 22 As shown, the multiple color filter portions 41 in the color filter layer 40 each include a main body portion 401 and at least one protrusion 402 connected to the main body portion 401; the protrusion 402 fills the space between the main bodies 401 of two adjacent color filter portions 41 located in the same row; the protrusion 402 fills the space between the main bodies 401 of two adjacent color filter portions 41 located in the same column. This configuration results in a smaller gap between the main bodies 401 of two adjacent color filter portions 41 located in the same row, and a smaller gap between the main bodies 401 of two adjacent color filter portions 41 located in the same column. This effectively improves the problem of large gaps between adjacent color filter portions 41 in the color filter layer 40, and thus effectively improves the problem of breakage of the light-shielding layer 50.

[0127] In one embodiment, the color filter layer 40 includes at least three different color filter portions 41, wherein all color filter portions 41 of one color are a single integrated structure. For example... Figure 22 As shown, all the third color filter sections 413 of the color filter layer 40 are an integral structure.

[0128] In one embodiment, such as Figure 23 and Figure 24As shown, the edge of each through hole 71 of the insulating layer 70 facing the orthogonal projection of the bottom surface of the substrate 10 onto the substrate 10 is the first edge 711, and the edge of each color filter portion 41 facing the orthogonal projection onto the substrate 10 is the second edge 4011. The first edge 711 is located inside the corresponding second edge 4011. The edge of each pixel opening 221 facing the orthogonal projection of the bottom surface of the substrate 10 onto the substrate 10 is the third edge 2211, and the third edge 2211 is located inside the corresponding first edge 711. By setting the third edge 2211 to be inside the corresponding first edge 711, more light emitted by the sub-pixel 21 can be incident on the portion of the color filter 41 located inside the through hole 71 and reflected by the insulating layer 70 before being emitted, which helps to improve the light emission rate. By setting the first edge 711 to be inside the corresponding second edge 4011, that is, the color filter 41 partially covers the insulating layer 70, the gap between adjacent color filters 41 can be smaller, which helps to prevent the light-shielding layer 50 from breaking.

[0129] In one embodiment, such as Figure 23 and Figure 24 As shown, the edge of each of the openings 51 facing the bottom surface of the substrate 10 as an orthogonal projection on the substrate 10 is the fourth edge 511, which is located outside the corresponding first edge 711. This arrangement reduces the amount of light emitted through the through-holes 71 of the insulating layer 70 that is absorbed by the light-shielding layer 50, thereby reducing light loss and improving the light extraction efficiency of the display substrate.

[0130] like Figure 23 and Figure 24As shown, the edge of the orthographic projection of the first color filter on the substrate 10 is the second edge 4012, the edge of the orthographic projection of the second color filter on the substrate 10 is the second edge 4013, and the edge of the orthographic projection of the third color filter on the substrate 10 is the second edge 4014; the first edge of the via 71 corresponding to the first color filter is the first edge 712, the first edge of the via 71 corresponding to the second color filter is the first edge 713, and the first edge of the via 71 corresponding to the third color filter is the first edge 714; the third edge of the pixel opening 221 corresponding to the first color filter is the third edge. 2212, the third edge of the pixel opening 221 corresponding to the second color filter is the third edge 2213, and the third edge of the pixel opening 221 corresponding to the third color filter is the third edge 2214; the edge of the opening 51 corresponding to the first color filter facing the orthogonal projection of the bottom surface of the substrate 10 onto the substrate 10 is the fourth edge 512, the edge of the opening 51 corresponding to the second color filter facing the orthogonal projection of the bottom surface of the substrate 10 onto the substrate 10 is the fourth edge 513, and the edge of the opening 51 corresponding to the third color filter facing the orthogonal projection of the bottom surface of the substrate 10 onto the substrate 10 is the fourth edge 514. Wherein, the second edge 4012 of the first color filter is located outside the corresponding fourth edge 512, the fourth edge 512 is located outside the corresponding first edge 712, and the first edge 712 is located outside the corresponding third edge 2212; the second edge 4013 of the second color filter is located outside the corresponding fourth edge 513, the fourth edge 513 is located outside the corresponding first edge 713, and the first edge 713 is located outside the corresponding third edge 2213; the second edge 4014 of the third color filter is located outside the corresponding fourth edge 514, the fourth edge 514 is located outside the corresponding first edge 714, and the first edge 714 is located outside the corresponding third edge 2214.

[0131] In one embodiment, such as Figure 23 and Figure 24 In the first recess, the inner edge 731 of the orthographic projection onto the substrate is located between the corresponding first edge 712 and the fourth edge 512, and the outer edge is located between the corresponding fourth edge 512 and the second edge 4012. Similarly, the inner edge 745 of the second recess's orthographic projection onto the substrate is located between the corresponding first edge 713 and the fourth edge 513, and the outer edge 744 is located between the corresponding fourth edge 513 and the second edge 4013.

[0132] In one embodiment, such as Figure 25 and Figure 26As shown, at least one through-hole 71 of the insulating layer 70 has a protruding structure 705 on its side surface, and the protruding structure 705 extends toward the center of the through-hole 71. By providing the protruding structure 705 on the side surface of the through-hole 71, the area of ​​the side surface of the through-hole 71 can be increased, thereby allowing more light incident on the side surface of the through-hole 71 to be reflected, which is beneficial to improving the forward light emission of the display substrate.

[0133] In one embodiment, the side surface of the protrusion 705 is curved.

[0134] In some embodiments, the side surface of the protruding structure 705 may be conical, and the cross-sectional area of ​​the protruding structure 705 parallel to the substrate 10 gradually decreases in the direction from the substrate 10 to the color filter layer. Since the outer surface of the protruding structure 705 is a conical or frustum-shaped arc-shaped side surface, compared to the scheme where the side surface of the through hole 71 does not have a protruding structure, most of the light rays incident from the color filter portion 41 to the side surface of the protruding structure 705 at various directions can exit at similar exit angles after being reflected by the side surface of the protruding structure 705, which helps to increase the forward light emission of the display substrate.

[0135] In some embodiments, the side surface of the protruding structure 705 is cylindrical, or the cross-section of the protruding structure 705 parallel to the substrate 10 is semi-elliptical. With this configuration, compared to the scheme where the side surface of the through hole 71 does not have a protruding structure, the light incident from the color filter section 41 to the side surface of the protruding structure 705 from various directions is reflected by the side surface of the protruding structure 705, which helps to adjust the light incident from various directions to a direction perpendicular to the light emitting surface of the display panel, thereby increasing the forward light emission of the display substrate.

[0136] In one embodiment, such as Figure 25 and Figure 26 As shown, each of the through holes 71 has a plurality of protruding structures 705 on its side surface, and the plurality of protruding structures 705 on the side surface of the same through hole 71 are evenly spaced along the circumference. By providing a plurality of protruding structures 705 on the side surface of the through hole 71, more light can be reflected on the side surface of the protruding structures 705, thereby improving the light efficiency of the display panel. In some embodiments, such as Figure 25 and Figure 26 As shown, four protruding structures 705 are provided on the side surface of the same through hole 71, and the four protruding structures 705 are evenly spaced along the circumference.

[0137] In one embodiment, such as Figure 25 and Figure 26As shown, the axis of the protrusion 402 of the color filter 41 passing through the center of the color filter 41 is the first axis 4121, and the axis of the protrusion 705 of the through hole 71 passing through the center of the through hole 71 is the second axis 7011. The angle between the first axis 4121 of the protrusion 402 and the second axis 7011 of the two protrusions 705 adjacent to the protrusion 402 in the corresponding through hole 71 is the same. This arrangement helps to reduce the color shift of light from the side viewing angle and improve the user experience. The center of the color filter 41 coincides with the center of the corresponding through hole.

[0138] Furthermore, such as Figure 25 and Figure 26 As shown, the through hole 71 is provided with four protruding structures 705, which are evenly spaced in the circumferential direction. The included angle between the first axis 4121 of the protrusion 402 and the second axis 7011 of the corresponding through hole 71 and the two protruding structures 705 adjacent to the protrusion 402 is 45°.

[0139] This application also provides a display device. The display device includes the display substrate described in any of the above embodiments.

[0140] In one embodiment, the display device further includes a driver and a power supply circuit, wherein the driver is used to provide a driving signal for driving the sub-pixels to emit light, and the power supply circuit is used to supply power to the display substrate.

[0141] In one embodiment, the display device further includes a housing, and the display substrate is disposed within the housing.

[0142] The display device provided in this application embodiment can be any device with display function, such as a mobile phone, tablet computer, television, laptop computer, or vehicle-mounted equipment.

[0143] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A display substrate, characterized by, The display substrate comprises: a substrate; a light-emitting layer on the substrate, the light-emitting layer comprising a plurality of sub-pixels arranged at intervals; an insulating layer on a side of the light-emitting layer away from the substrate, the insulating layer being provided with a plurality of through holes; a color filter layer on a side of the light-emitting layer away from the substrate, the color filter layer comprising a plurality of color filter portions, each of the color filter portions corresponding to one of the through holes, each of the color filter portions being partially located in the corresponding through hole and partially located on a side of the insulating layer away from the substrate, the color filter layer comprising first color filter portions and second color filter portions, the leveling property of the material of the second color filter portions being better than that of the material of the first color filter portions, at least part of a region of the surface of the insulating layer away from the substrate in contact with at least one of the first color filter portions being recessed toward the substrate relative to at least part of a region of the surface of the insulating layer away from the substrate in contact with at least one of the second color filter portions; a light-blocking layer at least partially on a side of the color filter layer away from the substrate, the light-blocking layer being provided with a plurality of openings, a projection of each of the openings on the substrate falling within a projection of one of the color filter portions on the substrate.

2. The display substrate of claim 1, wherein, The surface of the insulating layer away from the substrate is provided with at least one first recessed portion, each of the first recessed portions being arranged on a periphery of the through hole corresponding to one of the first color filter portions, a projection of each of the first recessed portions on the substrate falling within a projection of the corresponding first color filter portion on the substrate, the surface of the insulating layer away from the substrate being planar in the region in contact with at least one of the second color filter portions. 3.The display substrate of claim 1, wherein, The surface of the insulating layer away from the substrate is provided with at least one first recessed portion and at least one first protruding portion, each of the first recessed portions being arranged on a periphery of the through hole corresponding to one of the first color filter portions, a projection of each of the first recessed portions on the substrate falling within a projection of the corresponding first color filter portion on the substrate; each of the first protruding portions being arranged on a periphery of the through hole corresponding to one of the second color filter portions, a projection of each of the first protruding portions on the substrate falling within a projection of the corresponding second color filter portion on the substrate. 4.The display substrate of claim 2 or 3, characterized in that, The color filter portions further comprise third color filter portions, the leveling property of the material of the third color filter portions being between that of the material of the first color filter portions and that of the material of the second color filter portions; the surface of the insulating layer away from the substrate is further provided with at least one second recessed portion, each of the second recessed portions being arranged on a periphery of the through hole corresponding to one of the third color filter portions, a projection of each of the second recessed portions on the substrate falling within a projection of the corresponding third color filter portion on the substrate; a volume of each of the first recessed portions is greater than that of each of the second recessed portions.

5. The display substrate of claim 4, wherein, The depth of each of the first recessed portions is the same as that of each of the second recessed portions, and an area of a projection of each of the first recessed portions on the substrate is greater than that of a projection of each of the second recessed portions on the substrate. 6.The display substrate of claim 4, wherein, An area of a normal projection of each of the first recesses on the substrate is the same as an area of a normal projection of each of the second recesses on the substrate, and a depth of each of the first recesses is greater than a depth of each of the second recesses. 7.The display substrate of claim 4, wherein, Each of the first recesses and / or each of the second recesses is annular and surrounds the corresponding via; or each of the first recesses and / or each of the second recesses comprises a plurality of grooves arranged at intervals, and the grooves of the same recess are arranged at intervals along the corresponding via. 8.The display substrate of claim 3, wherein, The color filter further comprises third color filter units, and a leveling property of a material of the third color filter units is between a leveling property of a material of the first color filter units and a leveling property of a material of the second color filter units. An area of a surface of the insulating layer away from the substrate and in contact with at least one of the third color filter units is planar. 9.The display substrate of claim 1, wherein, The surface of the insulating layer away from the substrate is provided with at least one first protrusion; each of the first protrusions is arranged at a periphery of the via corresponding to one of the second color filter units, a normal projection of each of the first protrusions on the substrate falls within a normal projection of the corresponding second color filter unit on the substrate; and an area of the surface of the insulating layer away from the substrate and in contact with at least one of the first color filter units is planar. 10.The display substrate of claim 1, wherein, The color filter further comprises third color filter units, and a leveling property of a material of the third color filter units is between a leveling property of a material of the first color filter units and a leveling property of a material of the second color filter units. The surface of the insulating layer away from the substrate is provided with at least one first protrusion and at least one second protrusion; each of the first protrusions is arranged at a periphery of the via corresponding to one of the second color filter units, and a normal projection of each of the first protrusions on the substrate falls within a normal projection of the corresponding second color filter unit on the substrate; Each of the second protrusions is arranged at a periphery of the via corresponding to one of the third color filter units, and a normal projection of each of the second protrusions on the substrate falls within a normal projection of the corresponding third color filter unit on the substrate; A volume of each of the first protrusions is greater than a volume of each of the second protrusions. 11.The display substrate of claim 10, wherein, Each of the first protrusions and / or each of the second protrusions is annular and surrounds the corresponding via; or each of the first protrusions and / or each of the second protrusions comprises a plurality of protruding structures arranged at intervals, and the protruding structures of the same protrusion are arranged at intervals along the corresponding via. 12.The display substrate of claim 10, wherein, The first protrusions and the second protrusions are of the same height. 13.The display substrate of claim 12, wherein, Each of the first protrusions and each of the second protrusions comprises a plurality of protruding structures arranged at intervals; The protruding structures of each of the first protrusions and the protruding structures of each of the second protrusions are of the same volume, and a number of the protruding structures in each of the first protrusions is greater than a number of the protruding structures in each of the second protrusions; Or, a number of the protruding structures of each of the first protrusions and a number of the protruding structures of each of the second protrusions are the same, and a volume of the protruding structures of each of the first protrusions is greater than a volume of the protruding structures of each of the second protrusions. 14.The display substrate of claim 10, wherein, Each of the first protruding portions has the same shape as that of each of the second protruding portions away from the surface of the substrate, each of the first protruding portions has the same area as that of each of the second protruding portions in orthographic projection on the substrate, and each of the first protruding portions has a height greater than that of each of the second protruding portions. 15.The display substrate of claim 1, wherein, The surface of the insulating layer away from the substrate is provided with at least one protruding portion; each of the protruding portions is arranged at the periphery of the through hole corresponding to the color filter portion; and the orthographic projection of each of the protruding portions on the substrate falls within the orthographic projection of the corresponding color filter portion on the substrate. At least one of the protruding portions has a non-planar surface away from the substrate. 16.The display substrate of claim 1, wherein, The portions of the surfaces of the color filter portions in contact with the light shielding layer are substantially in the same plane. 17.The display substrate of claim 1, wherein, The insulating layer has a refractive index less than that of each of the color filter portions. 18.The display substrate of claim 1, wherein, Each of the color filter portions comprises a main body portion, each of the main body portions is partially located in one of the through holes; at least one of the color filter portions comprises a protruding portion connected to the main body portion, and each of the protruding portions is located between two adjacent main body portions. 19.The display substrate of claim 1, wherein, The side surface of at least one of the through holes of the insulating layer is provided with at least one protruding structure extending towards the center of the through hole. 20.The display substrate of claim 19, wherein, The side surface of the protruding portion is a conical surface or a cylindrical surface, or the protruding structure has a semelliptical cross section parallel to the substrate. 21.The display substrate of claim 19, wherein, Each of the color filter portions comprises a main body portion, each of the main body portions is partially located in one of the through holes; at least one of the color filter portions comprises a protruding portion connected to the main body portion, and each of the protruding portions is located between two adjacent main body portions; and the side surface of at least one of the through holes of the insulating layer is provided with a plurality of protruding structures arranged at intervals. The axis passing through the center of the color filter portion and serving as the first axis of the protruding portion, and the axis passing through the center of the through hole and serving as the second axis of the protruding structure are the same; and the included angle between the first axis of the protruding portion and the second axis of each of the two protruding portions adjacent to the protruding structure in the corresponding through hole is the same. 22.The display substrate of claim 1, wherein, The edge of the orthographic projection of each of the through holes on the substrate is a first edge, and the edge of the orthographic projection of each of the color filter portions on the substrate is a second edge; the first edge is located inside the corresponding second edge. 23.The display substrate of claim 1, wherein, The display substrate further comprises a pixel defining layer between the substrate and the insulating layer; the pixel defining layer is provided with a plurality of pixel openings, at least part of each of the sub-pixels is located in one of the pixel openings; the edge of the orthographic projection of each of the through holes on the substrate is a first edge, and the edge of the orthographic projection of each of the pixel openings on the substrate is a third edge; and the third edge is located inside the corresponding first edge. 24.The display substrate of claim 1, wherein, The edge of the orthographic projection of each of the through holes on the substrate is a first edge, and the edge of the orthographic projection of each of the apertures on the substrate is a fourth edge; and the fourth edge is located outside the corresponding first edge. 25.The display substrate of claim 1, wherein, The color filter layer comprises color filter parts of at least three different colors, and all color filter parts of one color are in one body structure. 26.The display substrate of claim 1, wherein, The display substrate further comprises a touch structure layer between the light-emitting layer and the color filter layer, the touch structure layer comprising a first touch electrode layer, a second touch electrode layer on a side of the first touch electrode layer away from the substrate, an insulating material layer between the first touch electrode layer and the second touch electrode layer, and an insulating protective layer on a side of the second touch electrode layer away from the substrate. The insulating layer is multiplexed as the insulating protective layer, and the insulating layer covers the second touch electrode layer. 27.The display substrate of claim 1, wherein, The display substrate further comprises an encapsulation layer between the light-emitting layer and the color filter layer; and / or, The display substrate further comprises a protective layer on a side of the light-blocking layer away from the substrate.

28. A display device comprising: The display device comprises the display substrate according to any one of claims 1 to 27.

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