Display substrate and display device

Abstract

The utility model 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] The present application relates to the field of display technology, and in particular to a display substrate and a display device. Background Art

[0002] OLED (Organic Light-Emitting Diode) has the advantages of self-luminescence, high efficiency, bright colors, light weight, power saving and wide operating temperature range. It has been gradually applied to large-area display, lighting and automotive display. Utility Model Content

[0003] The present application provides a display substrate and a display device.

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

[0005] substrate;

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

[0007] an insulating layer, located on a side of the light-emitting layer away from the substrate; the insulating layer is provided with a plurality of through holes;

[0008] a color filter layer located on a side of the light-emitting layer remote from the substrate, the color filter layer comprising a plurality of color filter sections; each color filter section corresponding to one of the through holes, each color filter section being partially located within the corresponding through hole and partially located on a side of the insulating layer remote from the substrate; the color filter layer comprising a first color filter section and a second color filter section, the material of the second color filter section having better leveling properties than the material of the first color filter section; at least a portion of a surface of the insulating layer remote from the substrate in contact with at least one of the first color filter sections is recessed toward the substrate relative to at least a portion of a surface of the insulating layer remote from the substrate in contact with at least one of the second color filter sections;

[0009] The light shielding layer is at least partially located on a side of the color filter layer away from the substrate; the light shielding layer is provided with a plurality of openings, and the orthographic projection of each opening on the substrate falls within the orthographic projection of one of the color filter portions on the substrate.

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

[0011] In one embodiment, the surface of the insulating layer away from the substrate is provided with at least one first protrusion and at least one first depression; each of the first depressions is arranged on the circumferential side of the through hole corresponding to a first color filter portion, and the orthographic projection of each of the first depressions on the substrate falls within the orthographic projection of the corresponding first color filter portion on the substrate; each of the first protrusions is arranged on the circumferential side of the through hole corresponding to a second color filter portion, and the orthographic projection of each of the first protrusions on the substrate falls within the orthographic projection of the corresponding second color filter portion on the substrate.

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

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

[0014] In one embodiment, each of the first recessed portions and each of the second recessed portions have the same depth, and an orthographic projection area of each of the first recessed portions on the substrate is larger than an orthographic projection area of each of the second recessed portions on the substrate.

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

[0016] In one embodiment, each of the first recessed portions and / or each of the second recessed portions is annular and is arranged around the corresponding through hole; or, each of the first recessed portions and / or each of the second recessed portions includes a plurality of grooves arranged at intervals, and the grooves of the same recessed portion are arranged at intervals along the corresponding through hole.

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

[0018] The area of the insulating layer that is away from the substrate and in contact with at least one third color filter portion is a plane.

[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 arranged on the peripheral side of the through hole corresponding to a second color filter portion, and the orthographic projection of each first protrusion on the substrate falls within the orthographic projection of the corresponding second color filter portion on the substrate; the area of the surface of the insulating layer away from the substrate that contacts at least one first color filter portion is a plane.

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

[0021] 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 first protrusion is arranged on the circumferential side of the through hole corresponding to a second color filter portion, and the orthographic projection of each first protrusion on the substrate falls within the orthographic projection of the corresponding second color filter portion on the substrate; each second protrusion is arranged on the circumferential side of the through hole corresponding to a third color filter portion, and the orthographic projection of each second protrusion on the substrate falls within the orthographic projection of the corresponding third color filter portion 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 arranged around the corresponding through hole; or, each of the first protrusions and / or each of the second protrusions includes a plurality of protrusion structures arranged at intervals, and the protrusion structures of the same protrusion are arranged at intervals along the corresponding through hole.

[0023] In one embodiment, each of the first protrusions has the same height as 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 volume of the convex structure of each first convex portion is the same as that of the convex structure of each second convex portion, and the number of convex structures in each first convex portion is greater than the number of convex structures in each second convex portion; or, the number of convex structures of each first convex portion is the same as that of each second convex portion, and the volume of the convex structure of each first convex portion is greater than the volume of the convex structure of each second convex portion.

[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 surface of the insulating layer away from the substrate is provided with at least one raised portion; each of the raised portions is provided on the peripheral side of the through hole corresponding to the color filter portion, and the orthographic projection of each of the raised portions on the substrate falls within the orthographic projection of the corresponding color filter portion on the substrate; the surface of at least one of the raised portions away from the substrate is non-planar.

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

[0029] In one embodiment, the refractive index of the insulating layer is smaller than the refractive index of each of the color filter portions.

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

[0031] In one embodiment, at least one protruding structure is provided on a side surface of at least one through hole of the insulating layer, and the protruding structure extends toward the center of the through hole where the protruding structure is located.

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

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

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

[0035] In one embodiment, the edge of the orthographic projection of the bottom surface of each through hole toward the substrate on the substrate is a first edge, the edge of the orthographic projection of each color filter portion on the substrate is a second edge, and the first edge is 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 is provided with a plurality of pixel openings, and at least a portion of each of the sub-pixels is located within one of the pixel openings; the edge of the positive projection of each through hole onto the bottom surface of the substrate toward the substrate is a first edge, and the edge of the positive projection of each pixel opening onto the bottom surface of the substrate toward the substrate is a third edge, and the third edge is located on the inner side of the corresponding first edge.

[0037] In one embodiment, the edge of the orthographic projection of each through hole toward the bottom surface of the substrate on the substrate is the first edge, and the edge of the orthographic projection of each opening on the substrate is the fourth edge, and the fourth edge is located outside the corresponding first edge.

[0038] In one embodiment, the color filter layer includes color filter portions of at least three different colors, wherein all color filter portions of one color are an integrated structure.

[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 including a first touch electrode layer, a second touch electrode layer located on a 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 protection layer on a side of the second touch electrode layer away from the substrate;

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

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

[0042] The display substrate further includes a protection layer located on a side of the light shielding layer away from the substrate.

[0043] According to a second aspect of an embodiment of the present application, a display device is provided, comprising the above-mentioned display substrate.

[0044] The display substrate and display device provided by the embodiments of the present application have better leveling properties than the material of the second color filter portion. 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 portion is recessed toward the substrate relative to at least a portion of the area in contact with the second color filter portion. This can reduce the step difference between the surface of the substrate away from the portion of the first color filter portion in contact with the insulating layer and the surface of the substrate away from the portion of the second color filter portion in contact with the insulating layer. This can improve the problem of the light-shielding layer being broken or the light-shielding layer being separated from the adjacent film layer due to the large step difference between the surfaces of the color filters of different colors away from the substrate, thereby helping to improve the yield of the display substrate. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0046] Figure 2 yes Figure 1 A partial schematic diagram of some film layers of a display substrate is shown;

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

[0048] Figure 4 yes Figure 3 A partial schematic diagram of some film layers of a display substrate is shown;

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

[0050] Figure 6 yes Figure 5 A partial schematic diagram of some film layers of a display substrate is shown;

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

[0052] Figure 8 yes Figure 7 A partial schematic diagram of some film layers of a display substrate is shown;

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

[0054] Figure 10 yes Figure 9 A partial schematic diagram of some film layers of a display substrate is shown;

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

[0056] Figure 12 yes Figure 11 A partial schematic diagram of some film layers of a display substrate is shown;

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

[0058] Figure 14 yes Figure 13 A partial schematic diagram of some film layers of a display substrate is shown;

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

[0060] Figure 16 yes Figure 15 A partial schematic diagram of some film layers of a display substrate is shown;

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

[0062] Figure 18 yes Figure 17 A partial schematic diagram of some film layers of a display substrate is shown;

[0063] Figure 19 is a schematic diagram of a partial structure of a mask provided by an exemplary embodiment of the present application;

[0064] Figure 20 is a schematic diagram of a partial structure of a mask provided by another exemplary embodiment of the present application;

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

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

[0067] Figure 23 yes Figure 21 A positional relationship diagram of a color filter layer and an 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 partial enlarged view of the color filter layer shown;

[0070] Figure 26 yes Figure 22 A partial enlarged view of the color filter layer is shown. DETAILED DESCRIPTION

[0071] The technical solutions in the embodiments (or "implementations") of the present application will be clearly and completely described here in conjunction with the accompanying drawings. The following embodiments and features therein may be combined with each other unless otherwise indicated. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements.

[0072] If there are terms related to directional indications or positional relationships in the embodiments of this application (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 relationship, movement, etc. between the components in a specific posture; if the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms "first" and "second" in the embodiments of this application are only used for descriptive convenience and should not be understood as indicating or implying relative importance.

[0073] A display substrate includes a light-emitting layer and an insulating layer, a color filter layer, and a light-shielding layer located on the light-emitting layer. The insulating layer is provided with a plurality of through holes; the color filter layer includes color filter portions of multiple colors, each color filter portion being partially located in a through hole and partially located on the side of the insulating layer away from the light-emitting layer; and the light-shielding layer is located on the side of the color filter layer away from the substrate. The color filter layer is usually prepared using a coating process. The leveling properties of the materials of the color filter portions of different colors vary. The better the leveling properties of the color filter portion material, the smaller the thickness of the portion of the color filter portion located on the insulating layer. The worse the leveling properties of the color filter portion material, the thicker the portion of the color filter portion located on the insulating layer. As a result, the thickness of the portions of the color filter portions of different colors located on the insulating layer are different, resulting in a step difference, which in turn causes the light-shielding layer formed on the color filter layer to break or separate from the adjacent film layer.

[0074] The embodiments of the present application provide a display substrate and a display device, which can solve the above problems.

[0075] The embodiment of the present application provides a display substrate, which 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 includes a plurality of sub-pixels 21 arranged at intervals. The insulating layer 70 is located on the side of the light-emitting layer 20 away from the substrate 10; the insulating layer 70 is provided with 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 includes a plurality of color filter sections 41. Each color filter section 41 corresponds to a through hole 71, and each color filter section 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 section 411 and a second color filter section 412. The material of the second color filter section 412 has better leveling properties than the material of the first color filter section 411. On the surface of the insulating layer 70 facing away from the substrate 10, at least a portion of the area contacting at least one first color filter portion 411 is recessed toward the substrate 10 relative to at least a portion of the area contacting at least one second color filter portion 412. The light-shielding layer 50 is at least partially located on a side of the color filter layer 40 facing away from the substrate 10. The light-shielding layer 50 is defined by a plurality of openings 51, each of which has an orthographic projection on the substrate 10 falling within the orthographic projection of a color filter portion 41 on the substrate 10.

[0077] In the display substrate provided by the embodiment of the present application, since the leveling property of the material of the second color filter portion 412 is better than the leveling property of the material of the second color filter portion 411, the surface of the insulating layer 70 away from the substrate 10 is arranged so that at least a portion of the area in contact with the first color filter portion 411 is recessed toward the substrate 10 relative to at least a portion of the area in contact with the second color filter portion 412. This can reduce the step difference between the portion of the first color filter portion 411 in contact with the insulating layer 70 away from the substrate surface and the portion of the second color filter portion 412 in contact with the insulating layer 70 away from the substrate surface. The problem of the light-shielding layer being broken or the light-shielding layer being separated from the adjacent film layer due to the large step difference between the color filter portions of different colors away from the surface of the substrate can be improved, thereby helping to improve the yield of the display substrate. By arranging 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 the non-display state. By arranging the color filter layer 40, the color filter layer 40 can filter the incident external ambient light, reduce the amount of reflection of the incident ambient light, and compared with the polarizer, it can reduce the loss of the outgoing light and improve the light extraction efficiency.

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

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

[0080] In one embodiment, 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 may correspond one to one with the sub-pixels 21, and each pixel circuit is used to drive a corresponding sub-pixel 21.

[0081] In one embodiment, Figure 1 As shown, the sub-pixel 21 includes a first electrode 211, a light-emitting material layer 212 located on a side of the first electrode 211 away from the substrate 10, and a second electrode 213 located on a 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 an anode, the second electrode 213 is a 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, 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 a source electrode, and the other is a drain electrode. The capacitor 62 includes a first electrode plate 621 and a second electrode plate 622 disposed opposite each other. The pixel circuit layer may also include multiple signal lines, such as scan signal lines, data signal lines, and power signal lines.

[0083] In one embodiment, Figure 1 As shown, the gate 612 and the first plate 621 of the capacitor 62 are located on the same layer, the second plate 622 of the capacitor 62 is located on the side of the first plate 621 away from the substrate 10, and the first electrode 613 and the second electrode 614 of the thin film transistor 61 are located on the same layer and are located on the side of the second plate 622 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 plate 622, an interlayer dielectric layer 65 located between the second plate 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 via a through hole penetrating the planarization layer 66, and the first electrode 613 and the second electrode 614 are in contact with the active layer 611 via through holes 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 emitting different colors. The sub-pixels 21 may correspond one-to-one to the color filter portion 41. The orthographic projection of each sub-pixel 21 on the substrate 10 falls within the orthographic projection of the corresponding color filter portion 41 on the substrate 10. The luminescent color of each sub-pixel 21 is the same as the color of the corresponding color filter portion 41 in the color filter layer 40. For example, the light-emitting layer 20 includes sub-pixels emitting a first color, sub-pixels emitting a second color, and sub-pixels emitting a third color. The color filter layer 40 includes a first color filter portion 411, a second color filter portion 412, and a third color filter portion 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 a sub-pixel emitting red, a sub-pixel emitting green, and a sub-pixel emitting blue, and the color filter layer 40 may include a red filter portion, a blue filter portion, and a green filter portion.

[0086] In one embodiment, Figure 1 As shown, the light-emitting layer 20 further includes a pixel-defining layer 22, which is provided with 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. The pixel openings 221 may correspond one-to-one to the sub-pixels 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. The second electrode 213 is at least partially located on the side of the pixel-defining layer 22 away from the substrate 10. Each pixel opening 221 defines a light-emitting area of the corresponding sub-pixel 21. Specifically, the area defined by the bottom surface of the pixel opening 221 facing the substrate 10 is the light-emitting area of the sub-pixel 21.

[0087] In one embodiment, Figure 1 As shown, in the direction from the substrate 10 to the second electrode 213, the side surface of the pixel opening 221 extends outwardly at an angle. The pixel defining layer 22 can be formed by an exposure and development process, so that the shape of the pixel opening 221 is formed as shown.

[0088] In one embodiment, 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 can be a thin-film encapsulation layer, which includes alternating organic and inorganic layers, with the inorganic layer being the layer at the greatest distance from the substrate 10. In some embodiments, the thin-film encapsulation layer can include two inorganic layers and an organic layer located between the two inorganic layers.

[0089] In one embodiment, 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 facing 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 facing 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 may be connected via the first connecting portions, and adjacent second touch electrodes may be electrically connected via the second connecting portions. The insulating protective layer 86 and the insulating material layer 84 may be made of an organic material. The surfaces of the insulating protective layer 86 and the insulating material layer 84 facing away from the substrate 10 have good flatness. In some embodiments, the insulating protective layer 86 and the insulating material layer 84 may be made of an organic resin.

[0090] In one embodiment, the side surfaces of each through hole 71 of the insulating layer 70 extend outwardly at an angle from the substrate 10 to the insulating layer 70. The through holes 71 of the insulating layer 70 can be formed by an exposure and development process, so that the formed through holes 71 have such a shape.

[0091] Furthermore, the refractive index of the insulating layer 70 is lower than the refractive index of the color filter portion 41. With this arrangement, after the light emitted by the sub-pixel 21 is incident on the side of the through-hole 71 of the insulating layer 70 through the color filter portion 41, most of the light is totally reflected on the side of the through-hole 71 of the insulating layer 70 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 portion 41 ranges from 1.6 to 1.7. In this way, the difference in refractive index between the color filter portion 41 and the insulating layer 70 is large, which can improve the total reflection efficiency of the light incident on the side of the through-hole 71 of the insulating layer 70.

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

[0093] In one embodiment, 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 can be organic resin.

[0094] In one embodiment, Figure 1 As shown, the color filter layer 40 further includes a third color filter portion 413. The leveling properties of the material of the third color filter portion 413 are between the leveling properties of the material of the first color filter portion 411 and the leveling properties of 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 surface of the insulating layer 70 away from the substrate 10, which contacts each of the first color filter portions 411, is recessed toward the substrate 10 relative to at least a portion of the surface of the insulating layer 70 contacting each of the second color filter portions 412. This helps to alleviate the problem of the light shielding layer 50 being broken or separated from adjacent layers.

[0096] In one embodiment, Figures 1 to 4 As shown, the surface of the insulating layer 70 facing away from the substrate is provided with at least one first recessed portion 73; each first recessed portion 73 is disposed around the through-hole 71 corresponding to a first color filter portion 411, and the orthographic projection of each first recessed portion 73 on the substrate 10 falls within the orthographic projection of the corresponding first color filter portion 411 on the substrate 10. The region of the surface of the insulating layer 70 facing away from the substrate 10 that contacts at least one second color filter portion 412 is a flat surface 701. The region of the surface of the insulating layer 70 facing away from the substrate 10 that contacts at least one second color filter portion 412 is a flat surface, and the region contacting at least one first color filter portion 411 is provided with the first recessed portion 73. The region of the insulating layer 70 that contacts the first color filter portion 411 is recessed relative to the region that contacts the second color filter portion 412, toward the substrate 10. The first recessed portion 73 can accommodate part of the material of the first color filter portion 411, thereby lowering the height of the portion of the first color filter portion 411 that contacts the insulating layer 70 away from the surface of the substrate 10, thereby reducing the step difference between the first color filter portion 411 and the second color filter portion 412 away from the surface of the substrate.

[0097] Furthermore, the surface of the insulating layer 70 away from the substrate 10 is flat in the area contacting each second color filter portion 412, and is provided with a first recessed portion 73 in the area contacting each first color filter portion 411. The volumes of the first recessed portions 73 can be substantially the same. This further helps to alleviate the problem of the light shielding layer 50 breaking and separating from adjacent film layers.

[0098] In one embodiment, Figures 5 to 10 As shown, the surface of the insulating layer 70 away from the substrate 10 is provided with at least one first protrusion 74 and at least one first depression 73. Each first depression 73 is disposed around the through-hole 71 corresponding to a first color filter portion 411, and the orthographic projection of each first depression 73 on the substrate 10 falls within the orthographic projection of the corresponding first color filter portion 411 on the substrate 10. Each first protrusion 74 is disposed around the through-hole 71 corresponding to a second color filter portion 412, and the orthographic projection of each first protrusion 74 on the substrate falls within the orthographic projection of the corresponding second color filter portion 412 on the substrate 10. On the surface of the insulating layer 70 away from the substrate 10, the first protrusion 74 is disposed in the area contacting at least one second color filter portion 412, and the first depression 73 is disposed in the area contacting at least one first color filter portion 411. The area of the insulating layer 70 contacting the first color filter portion 411 is recessed toward the substrate 10 relative to the area contacting the second color filter portion 412. The first recessed portion 73 can accommodate part of the material of the first color filter portion 411, thereby lowering the height of the portion of the first color filter portion 411 in contact with the insulating layer 70 away from the surface of the substrate 10. The first raised portion 74 can increase the height of the portion of the second color filter portion 412 in contact with the insulating layer 70 away from the surface of the substrate 10, thereby effectively reducing the step difference between the first color filter portion 411 and the second color filter portion 412 away from the surface of the substrate.

[0099] Furthermore, on the surface of the insulating layer 70 away from the substrate 10, the areas contacting each second color filter portion 412 are each provided with a first protrusion 74, and the areas contacting each first color filter portion 411 are each provided with a first recess 73. The volumes of the first protrusions 74 and the volumes of the first recesses 73 can be substantially the same. This further helps to alleviate the problem of the light shielding layer 50 breaking and separating from adjacent film layers.

[0100] In one embodiment, Figures 1 to 4 、 Figure 9 and Figure 10As shown, the surface of the insulating layer 70 away from the substrate 10 further comprises at least one second recessed portion 72. Each second recessed portion 72 is disposed around the through-hole 71 corresponding to a third color filter portion 413, and the orthographic projection of each second recessed portion 72 on the substrate falls within the orthographic projection of the corresponding third color filter portion 413 on the substrate 10. The volume of the first recessed portion 73 is greater than the volume of the second recessed portion 72. By providing a larger volume of the first recessed portion 73 than the second recessed portion 72, the amount of material of the first color filter portion 411 accommodated in the first recessed portion 73 is greater than the amount of material of the second color filter portion 412 accommodated in the second recessed portion 72, thereby reducing the step difference between the surfaces of the first color filter portion 411 and the second color filter portion 412 away from the substrate.

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

[0102] In one embodiment, the depth of each first recessed portion 73 is the same as the depth of each second recessed portion 72 , and the area of the orthographic projection of each first recessed portion 73 on the substrate 10 is larger than the area of the orthographic projection of each second recessed portion 72 on 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 greater than that of the second recess 72. The first and second recesses 73 and 72 have the same depth. When the insulating layer 70 is formed using an exposure and development process, the light transmittance of the mask corresponding to the first and second recesses 73 and 72 is the same, helping to reduce mask costs. The first and second recesses 73 and 72 formed using the exposure and development process have the same shape, with their side surfaces extending outward at an angle from the substrate 10 toward the light-shielding layer 50.

[0103] In one embodiment, the area of the orthographic projection of each first recess 73 on the substrate 10 is the same as the area of the orthographic projection of each second recess 72 on the substrate 10 , and the depth of each first recess 73 is greater than the depth of each second recess 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 of the second recess 72 on the substrate 10 differ 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 first recessed portion 73 and / or each second recessed portion 72 is annular and disposed around the corresponding through-hole 71. When the first recessed portion 73 is annular, the surface flatness of the portion of the first color filter portion 411 located on the insulating layer 70 corresponding to the first recessed portion 73 is improved; when the second recessed portion 72 is annular, the surface flatness of the portion of the third color filter portion 413 located on the insulating layer 70 corresponding to the second recessed portion 72 is improved. In some embodiments, each first recessed portion 73 and each second recessed portion 72 are both annular.

[0105] In one embodiment, each of the first recessed portions 73 and / or each of the second recessed portions 72 includes a plurality of grooves arranged at intervals, and the grooves of the same recessed portion are arranged at intervals along the corresponding through hole 71. In some embodiments, each of the first recessed portions 73 and each of the second recessed portions 72 includes a plurality of grooves arranged at intervals.

[0106] In one embodiment, Figures 5 to 8 As shown, in 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 recessed portion 73, and the area in contact with at least one of the second color filter portions 412 is provided with a first raised portion 74.

[0107] In one embodiment, Figure 7 and Figure 8 As shown, the first protrusion 74 includes a main body 742 and a plurality of protrusion structures 743 arranged at intervals on a side of the main body 742 away from the substrate 10 , and the main body 742 is arranged at intervals along the corresponding through holes 71 . Figure 9 and Figure 10 In the illustrated embodiment, the first raised portion 74 includes a plurality of spaced-apart raised structures 741 surrounding the corresponding through-holes 71. This arrangement provides a greater surface roughness of the first raised portion 74 away from the substrate 10, thereby increasing the time that the material of the second color filter portion remains on the top surface of the insulating layer 70 and further helping to reduce the step difference between the surface of the first color filter portion away from the substrate and the surface of the second color filter portion away from the substrate.

[0108] In one embodiment, Figures 11 to 18 As shown, the surface of the insulating layer 70 away from the substrate 10 is provided with at least one first raised portion 74. Each first raised portion 74 is disposed around the through-hole 71 corresponding to a second color filter portion 412, and the orthographic projection of each first raised portion 74 on the substrate 10 falls within the orthographic projection of the corresponding second color filter portion 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 portion 411 is a flat surface 702. The first raised portion 74 increases the height of the portion of the second color filter portion 412 that contacts the insulating layer 70 away from the substrate 10, effectively reducing the step between the second color filter portion 412 and the first color filter portion 411 away from the substrate.

[0109] Furthermore, on the surface of the insulating layer 70 away from the substrate 10, the areas contacting each second color filter portion 412 are each provided with a first protrusion 74, and the volumes of each first protrusion 74 can be substantially the same, while the areas contacting each first color filter portion 411 are all flat surfaces 702. This further helps to alleviate the problem of the light shielding layer 50 breaking and separating from adjacent film layers.

[0110] In one embodiment, Figures 11 to 18 As shown, the insulating layer 70 further comprises at least one second raised portion 75 on a surface away from the substrate 10. Each second raised portion 75 is disposed around the through-hole 71 corresponding to a third color filter portion 413, and the orthographic projection of each second raised portion 75 on the substrate 10 falls within the orthographic projection of the corresponding third color filter portion 413 on the substrate 10. The volume of each first raised portion 74 is greater than the volume of each second raised portion 75. By arranging the volume of the first raised portion 74 to be greater than the volume of the second raised portion 75, the volume difference between the first raised portion 74 and the second raised portion 75 can compensate for the height difference between the surfaces away from the substrate 10 caused by the difference in leveling properties of the materials of the second color filter portion 412 and the third color filter portion 413, effectively reducing the step difference between the surfaces away from the substrate 10 of the second color filter portion 412 and the third color filter portion 413.

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

[0112] In one embodiment, each of the first protrusions 74 and / or each of the second protrusions 75 includes a plurality of protrusion structures arranged at intervals, and the protrusion structures of the same protrusion are arranged at intervals along the corresponding through hole 71 . Figure 15 and Figure 16 In the illustrated embodiment, the first raised portion 74 includes a plurality of spaced-apart raised structures 741, and the second raised portion 75 includes a plurality of spaced-apart raised structures 751. The surface of the raised portion, including the raised structures, facing away from the substrate has a greater roughness, which helps increase the residence time of the color filter material on the top surface of the insulating layer, thereby reducing the step difference between the surface of the first color filter and the surface facing away from the substrate. The raised structures 741 and 751 can be annular, surrounding the corresponding through-holes 71.

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

[0114] In one embodiment, Figure 11 and Figure 12 As shown, the surfaces of the first and second protrusions 74, 75 away from the substrate 10 are both plane, the heights of the first and second protrusions 74, 75 are both d1, and the area of the orthographic projection of the first protrusion 74 on the substrate 10 is larger than the area of the orthographic projection of the second protrusion 75 on the substrate 10. This allows the volume of the first protrusion 74 to be larger 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 orthographic projection of each first protrusion 74 on the substrate has the same area as the orthographic projection of each second protrusion 75 on the substrate 10, and the height of each first protrusion 74 is greater than the height of each second protrusion 75. In this way, the volume of the first protrusion 74 can be greater than the volume of the second protrusion 75. Figure 13 and Figure 14 As shown, the surfaces of the first and second protrusions 74 and 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 on the substrate 10 can be the same as the area of the orthographic projection of the second protrusion 75 on the substrate 10. 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, Figure 15 and Figure 16 As shown, each first raised portion 74 includes a plurality of spaced-apart raised structures 741, and each second raised portion 75 includes a plurality of spaced-apart raised structures 751. The raised structures 741 of each first raised portion 74 and the raised structures 751 of each second raised portion 75 are of equal volume, and the number of raised structures 741 in each first raised portion 74 is greater than the number of raised structures 751 in each second raised portion 75. This arrangement ensures that the volume of the first raised portion 74 is greater than that of the second raised portion 75. The heights of the raised structures 741 and 751 can be the same. This arrangement ensures that the surface of the first raised portion 74 facing away from the substrate is rougher than the surface of the second raised portion 75 facing away from the substrate. This ensures that the material of the second color filter portion remains on the top surface of the insulating layer 70 longer than the material of the third color filter portion, further helping to reduce the step difference between the surfaces of the second and third color filter portions facing away from the substrate.

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

[0118] In one embodiment, Figure 17 and Figure 18As shown, the first raised portion 74 includes a main portion 742 and a plurality of raised structures 743 located on a side of the main portion 742 away from the substrate; the second raised portion 75 includes a main portion 752 and a plurality of raised structures 753 located on a side of the main portion 752 away from the substrate 10. The main portions 742 and 752 can have the same height, and the raised structures 743 and 753 can have the same height. The volume of the first raised portion 74 can be made larger than the volume of the second raised portion 75 by adjusting the areas of the orthographic projections of the main portions 742, 752, raised structures 743, and raised structures 753 on the substrate 10.

[0119] In one embodiment, at least one of the first and second raised portions 74, 75 of the insulating layer 70 has a non-planar surface facing away from the substrate. This non-planar surface can increase the time the color filter material remains on the top surface of the insulating layer, further helping to reduce the step between the surface of the first color filter facing away from the substrate and the surface of the second color filter facing away from the substrate.

[0120] In one embodiment, the minimum distance between the top edge of the first recessed portion 73 and the top edge of the corresponding through-hole 71, the minimum distance between the top edge of the second recessed portion 72 and the top edge of the corresponding through-hole 71, and the minimum distance between the top edges of adjacent first recessed portions 73 and second recessed portions 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 can 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 can be 2 μm.

[0122] In one embodiment, the 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 illustrated masks all include a light-shielding portion 91 and a light-transmitting portion 92. The size of the light-transmitting portion 92 determines the size of the protruding structure, and the size of the light-transmitting portion 92 can be designed according to the size of the protruding structure.

[0123] In one embodiment, Figures 1 to 18As shown, the portions of the surfaces of the color filters 41 that contact the light shielding layer 50 are substantially coplanar. This effectively prevents the problem of the light shielding layer 50 breaking or separating from adjacent layers due to the different thicknesses of the color filters of different colors, resulting in step differences in the surface of the light shielding layer facing the substrate.

[0124] In one embodiment, Figure 21 and Figure 22 As shown, each color filter section 41 includes a main portion 401, with each main portion 401 partially located within the corresponding through-hole 71. At least one color filter section 41 includes a protrusion 402 connected to the main portion 401, with each protrusion 402 located between two adjacent main portions 401. This arrangement reduces the gap between adjacent color filter sections 41, thereby improving the problem of light emitted from the sub-pixels 21 diffracting through the broken portions of the light-shielding layer 50 due to the excessive distance between adjacent color filter sections 41, resulting in color separation. Furthermore, particles generated by the broken light-shielding layer 50 land on the color filter section 41 at a position opposite the opening 51 of the light-shielding layer 50, resulting in black spots on the display substrate. Figure 19 In the illustrated embodiment, 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 include color filter portions of two or more colors including protrusions 402.

[0125] In one embodiment, Figure 21 and Figure 22As shown, all color filter portions 41 of the color filter layer 40 are arranged into 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 columns. In two adjacent rows of color filter sections, the first color filter sections 411 and the second color filter sections 412 are arranged alternately in one row, while the color filter sections in the other row are all third color filter sections 413. In two adjacent columns of color filter sections, the first color filter sections 411 and the second color filter sections 412 are arranged alternately in one column, while the color filter sections in the other column are all third color filter sections 413. Multiple color filter sections in the same row are arranged along the X direction, and multiple color filter sections in the same column are arranged along the Y direction.

[0126] In one embodiment, Figure 21 and Figure 22 As shown, the multiple color filter sections 41 in the color filter layer 40 each include a main portion 401 and at least one protrusion 402 connected to the main portion 401. The protrusion 402 fills the gap between the main portions 401 of two adjacent color filter sections 41 in the same row, and the protrusion 402 fills the gap between the main portions 401 of two adjacent color filter sections 41 in the same column. This arrangement reduces the gap between the main portions 401 of two adjacent color filter sections 41 in the same row, and reduces the gap between the main portions 401 of two adjacent color filter sections 41 in the same column. This effectively alleviates the problem of large gaps between adjacent color filter sections 41 in the color filter layer 40, and further reduces the problem of cracks in the light shielding layer 50.

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

[0128] In one embodiment, Figure 23 and Figure 24As shown, the edge of the orthographic projection of each through hole 71 of the insulating layer 70 toward the bottom surface of the substrate 10 on the substrate 10 is a first edge 711, the edge of the orthographic projection of each color filter portion 41 on the substrate 10 is a second edge 4011, and the first edge 711 is located on the inner side of the corresponding second edge 4011; the edge of the orthographic projection of each pixel opening 221 toward the bottom surface of the substrate 10 on the substrate 10 is a third edge 2211, and the third edge 2211 is located on the inner side of the corresponding first edge 711. By arranging the third edge 2211 to be located inside the corresponding first edge 711, more light emitted by the sub-pixel 21 can be incident on the portion of the color filter portion 41 located inside the through hole 71, and be reflected by the insulating layer 70 before being emitted, which is beneficial to improving the light emission rate; by arranging the first edge 711 to be located inside the corresponding second edge 4011, that is, the color filter portion 41 partially covers the insulating layer 70, the gap between adjacent color filter portions 41 can be reduced, which helps to avoid the situation where the light shielding layer 50 is broken.

[0129] In one embodiment, Figure 23 and Figure 24 As shown, the edge of the orthographic projection of the bottom surface of each opening 51 toward the substrate 10 on the substrate 10 is a fourth edge 511, and the fourth edge 511 is located outside the corresponding first edge 711. This arrangement can reduce the amount of light emitted through the through hole 71 of the insulating layer 70 and 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 portion on the substrate 10 is the second edge 4012, the edge of the orthographic projection of the second color filter portion on the substrate 10 is the second edge 4013, and the edge of the orthographic projection of the third color filter portion on the substrate 10 is the second edge 4014; the first edge of the through hole 71 corresponding to the first color filter portion is the first edge 712, the first edge of the through hole 71 corresponding to the second color filter portion is the first edge 713, and the first edge of the through hole 71 corresponding to the third color filter portion is the first edge 714; the third edge of the pixel opening 221 corresponding to the first color filter portion is the third edge 2212, the third edge of the pixel opening 221 corresponding to the second color filter portion is the third edge 2213, and the third edge of the pixel opening 221 corresponding to the third color filter portion is the third edge 2214; the edge of the orthographic projection of the opening 51 corresponding to the first color filter portion toward the bottom surface of the substrate 10 on the substrate 10 is the fourth edge 512, the edge of the orthographic projection of the opening 51 corresponding to the second color filter portion toward the bottom surface of the substrate 10 on the substrate 10 is the fourth edge 513, and the edge of the orthographic projection of the opening 51 corresponding to the third color filter portion toward the bottom surface of the substrate 10 on the substrate 10 is the fourth edge 514. Among them, the second edge 4012 of the first color filter portion 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 portion 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 portion 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, Figure 23 and Figure 24 , the inner edge 731 of the orthographic projection of the first recessed portion on 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. The inner edge 745 of the orthographic projection of the second recessed portion on 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, Figure 25 and Figure 26As shown, a protruding structure 705 is provided on the side surface of at least one through hole 71 of the insulating layer 70. The protruding structure 705 extends toward the center of the through hole 71 in which it is located. 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 for increasing the amount of forward light output from the display substrate.

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

[0134] In some embodiments, the side surface of the protrusion structure 705 may be conical, and the cross-sectional area of the protrusion structure 705 parallel to the substrate 10 gradually decreases in the direction from the substrate 10 toward the color filter layer. Because the outer side surface of the protrusion structure 705 is a conical or truncated cone, compared to a solution in which the side surface of the through hole 71 is not provided with a protrusion structure, light from the color filter portion 41 incident on the side surface of the protrusion structure 705 from all directions is reflected by the side surface of the protrusion structure 705, and the majority of the light is emitted at similar angles, thereby increasing the amount of light emitted in the forward direction from the display substrate.

[0135] In some embodiments, the side surface of the protrusion structure 705 is cylindrical, or the cross-section of the protrusion structure 705 parallel to the substrate 10 is semi-elliptical. Compared to a solution in which the side surface of the through hole 71 is not provided with a protrusion structure, light incident from the color filter portion 41 on the side surface of the protrusion structure 705 from various directions is reflected by the side surface of the protrusion structure 705, which helps to adjust the direction of the light incident from various directions to be perpendicular to the light output surface of the display panel, thereby increasing the amount of light output in the forward direction of the display substrate.

[0136] In one embodiment, Figure 25 and Figure 26 As shown, the side surface of each through hole 71 is provided with a plurality of protruding structures 705, 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, 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 circumferential direction.

[0137] In one embodiment, 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 a first axis 4121, and the axis of the protrusion structure 705 of the through hole 71 passing through the center of the through hole 71 is a second axis 7011. The first axis 4121 of the protrusion 402 and the second axes 7011 of the two protrusion structures 705 adjacent to the protrusion 402 in the corresponding through hole 71 are at the same angle. This arrangement helps reduce color shift from side-view angles and improves the user experience. The center of the color filter 41 coincides with the center of the corresponding through hole.

[0138] Further, if Figure 25 and Figure 26 As shown, the through hole 71 is provided with four protruding structures 705, and the four protruding structures 705 are evenly spaced in the circumferential direction. The angles between the first axis 4121 of the protruding portion 402 and the corresponding through hole 71 and the second axis 7011 of the two adjacent protruding structures 705 of the protruding portion 402 are both 45°.

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

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

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

[0142] The display device provided in the embodiments of the present application may be, for example, a mobile phone, a tablet computer, a television, a laptop computer, an in-vehicle device, or any other device with a display function.

[0143] It should be noted that the technical solutions or technical 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 shall be included in the scope of protection of this application.

Claims

1. A display substrate, characterized in that: The display substrate comprises: substrate; a light-emitting layer located on the substrate; the light-emitting layer comprises a plurality of sub-pixels arranged at intervals; an insulating layer, located on a side of the light-emitting layer away from the substrate; the insulating layer is provided with a plurality of through holes; a color filter layer located on a side of the light-emitting layer remote from the substrate, the color filter layer comprising a plurality of color filter sections; each color filter section corresponding to one of the through holes, each color filter section being partially located within the corresponding through hole and partially located on a side of the insulating layer remote from the substrate; the color filter layer comprising a first color filter section and a second color filter section, the material of the second color filter section having better leveling properties than the material of the first color filter section; at least a portion of a surface of the insulating layer remote from the substrate in contact with at least one of the first color filter sections is recessed toward the substrate relative to at least a portion of a surface of the insulating layer remote from the substrate in contact with at least one of the second color filter sections; The light shielding layer is at least partially located on a side of the color filter layer away from the substrate; the light shielding layer is provided with a plurality of openings, and the orthographic projection of each opening on the substrate falls within the orthographic projection of one of the color filter portions on the substrate.

2. The display substrate according to claim 1, wherein: At least one first recessed portion is provided on a surface of the insulating layer away from the substrate; each first recessed portion is provided on a peripheral side of the through hole corresponding to a first color filter portion, and an orthographic projection of each first recessed portion on the substrate falls within an orthographic projection of the corresponding first color filter portion on the substrate; and an area of the surface of the insulating layer away from the substrate in contact with at least one second color filter portion is planar.

3. The display substrate according to claim 1, wherein The insulating layer is provided with at least one first protrusion and at least one first depression on a surface away from the substrate; each first depression is provided on a peripheral side of the through hole corresponding to a first color filter portion, and an orthographic projection of each first depression on the substrate falls within an orthographic projection of the corresponding first color filter portion on the substrate; Each of the first protrusions is arranged on a peripheral side of the through hole corresponding to a second color filter portion, and an orthographic projection of each of the first protrusions on the substrate falls within an orthographic projection of the corresponding second color filter portion on the substrate.

4. The display substrate according to claim 2 or 3, characterized in that: The color filter portion further includes a third color filter portion, wherein the leveling property of the material of the third color filter portion is between the leveling property of the material of the first color filter portion and the leveling property of the material of the second color filter portion; The insulating layer is further provided with at least one second recessed portion on a surface away from the substrate; each second recessed portion is provided on a peripheral side of the through hole corresponding to one of the third color filter portions, and an orthographic projection of each second recessed portion on the substrate falls within an orthographic projection of the corresponding third color filter portion on the substrate; The volume of each of the first recessed portions is greater than the volume of each of the second recessed portions.

5. The display substrate according to claim 4, wherein: The depth of each of the first recessed portions is the same as the depth of each of the second recessed portions. The area of the orthographic projection of each of the first recessed portions on the substrate is larger than the area of the orthographic projection of each of the second recessed portions on the substrate.

6. The display substrate according to claim 4, wherein: The area of the orthographic projection of each of the first recessed portions on the substrate is the same as the area of the orthographic projection of each of the second recessed portions on the substrate, and the depth of each of the first recessed portions is greater than the depth of each of the second recessed portions.

7. The display substrate according to claim 4, wherein: Each of the first recessed portions and / or each of the second recessed portions is annular and arranged around the corresponding through hole; or, each of the first recessed portions and / or each of the second recessed portions includes a plurality of grooves arranged at intervals, and the grooves of the same recessed portion are arranged at intervals along the corresponding through hole.

8. The display substrate according to claim 3, wherein: The color filter portion further includes a third color filter portion, wherein the leveling property of the material of the third color filter portion is between the leveling property of the material of the first color filter portion and the leveling property of the material of the second color filter portion; The area of the insulating layer that is away from the substrate and in contact with at least one third color filter portion is a plane.

9. The display substrate according to claim 1, wherein: At least one first protrusion is provided on the surface of the insulating layer away from the substrate; each first protrusion is arranged on the peripheral side of the through hole corresponding to a second color filter portion, and the orthographic projection of each first protrusion on the substrate falls within the orthographic projection of the corresponding second color filter portion on the substrate; the area of the surface of the insulating layer away from the substrate that contacts at least one first color filter portion is a plane.

10. The display substrate according to claim 1, wherein The color filter portion further includes a third color filter portion, wherein the leveling property of the material of the third color filter portion is between the leveling property of the material of the first color filter portion and the leveling property of the material of the second color filter portion; The insulating layer is provided with at least one first protrusion and at least one second protrusion on a surface away from the substrate; each of the first protrusions is provided on a peripheral side of the through hole corresponding to a second color filter portion, and an orthographic projection of each of the first protrusions on the substrate falls within an orthographic projection of the corresponding second color filter portion on the substrate; Each of the second protrusions is arranged on a peripheral side of the through hole corresponding to one of the third color filter portions, and an orthographic projection of each of the second protrusions on the substrate falls within an orthographic projection of the corresponding third color filter portion on the substrate; The volume of each of the first protrusions is greater than the volume of each of the second protrusions.

11. The display substrate according to claim 10, wherein: Each of the first protrusions and / or each of the second protrusions is annular and arranged around the corresponding through hole; or, each of the first protrusions and / or each of the second protrusions includes a plurality of protrusion structures arranged at intervals, and the protrusion structures of the same protrusion are arranged at intervals along the corresponding through hole.

12. The display substrate according to claim 10, wherein: The first protrusions and the second protrusions have the same height.

13. The display substrate according to claim 12, wherein: Each of the first protrusions and each of the second protrusions includes a plurality of protrusion structures arranged at intervals; The convex structure of each first convex portion has the same volume as the convex structure of each second convex portion, and the number of convex structures in each first convex portion is greater than the number of convex structures in each second convex portion; Alternatively, the number of the protrusion structures of each first protrusion portion is the same as the number of the protrusion structures of each second protrusion portion, and the volume of the protrusion structures of each first protrusion portion is greater than the volume of the protrusion structures of each second protrusion portion.

14. The display substrate according to claim 10, wherein: 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 has the same area as 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.

15. The display substrate according to claim 1, wherein At least one protrusion is provided on a surface of the insulating layer away from the substrate; each protrusion is provided on a peripheral side of the through hole corresponding to the color filter portion, and an orthographic projection of each protrusion on the substrate falls within an orthographic projection of the corresponding color filter portion on the substrate; A surface of at least one of the protrusions facing away from the substrate is non-planar.

16. The display substrate according to claim 1, wherein The portion of the surface of each color filter portion that contacts the light shielding layer is substantially in the same plane.

17. The display substrate according to claim 1, wherein The refractive index of the insulating layer is smaller than the refractive index of each of the color filter portions.

18. The display substrate according to claim 1, wherein Each of the color filter portions includes a main body portion, and each of the main bodies is partially located in one of the through holes; at least one of the color filter portions includes a protruding portion connected to the main body portion, and each of the protruding portions is located between two adjacent main bodies.

19. The display substrate according to claim 1, wherein At least one protruding structure is provided on a side surface of at least one through hole of the insulating layer, and the protruding structure extends toward the center of the through hole where the protruding structure is located.

20. The display substrate according to claim 19, wherein The side surface of the protruding structure is a conical surface or a cylindrical surface, or the cross section of the protruding structure parallel to the substrate is a semi-elliptical shape.

21. The display substrate according to claim 19, wherein Each of the color filter portions includes a main portion, each of the main portions being partially located within one of the through holes; at least one of the color filter portions includes a protrusion connected to the main portion, each of the protrusions being located between two adjacent main portions; and a plurality of protrusion structures arranged at intervals are provided on a side surface of at least one of the through holes in the insulating layer; The axis of the protrusion passing through the center of the color filter portion where it is located is the first axis, and the axis of the protrusion structure passing through the center of the through hole where it is located is the second axis; the angle between the first axis of the protrusion and the second axes of the two protrusions adjacent to the protrusion structure in the corresponding through hole is the same.

22. The display substrate according to claim 1, wherein The edge of the orthographic projection of the bottom surface of each through hole toward the substrate on the substrate is a first edge, the edge of the orthographic projection of each color filter portion on the substrate is a second edge, and the first edge is located inside the corresponding second edge.

23. The display substrate according to claim 1, wherein The display substrate also includes a pixel defining layer located between the substrate and the insulating layer; the pixel defining layer is provided with a plurality of pixel openings, and at least a portion of each sub-pixel is located within one of the pixel openings; the edge of the positive projection of each through hole onto the bottom surface of the substrate toward the substrate is a first edge, and the edge of the positive projection of each pixel opening onto the bottom surface of the substrate toward the substrate is a third edge, and the third edge is located on the inner side of the corresponding first edge.

24. The display substrate according to claim 1, wherein The edge of the orthographic projection of the bottom surface of each through hole toward the substrate on the substrate is a first edge, and the edge of the orthographic projection of each opening on the substrate is a fourth edge, and the fourth edge is located outside the corresponding first edge.

25. The display substrate according to claim 1, wherein The color filter layer includes color filter portions of at least three different colors, wherein all color filter portions of one color are an integrated structure.

26. The display substrate according to claim 1, wherein The display substrate further includes a touch structure layer located between the light-emitting layer and the color filter layer, the touch structure layer including a first touch electrode layer, a second touch electrode layer located on a 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 protection layer located on a side of the second touch electrode layer away from the substrate; The insulating layer is reused as the insulating protection layer, and the insulating layer covers the second touch electrode layer.

27. The display substrate according to claim 1, wherein The display substrate further includes an encapsulation layer located between the light-emitting layer and the color filter layer; and / or, The display substrate further includes a protection layer located on a side of the light shielding layer away from the substrate.

28. A display device, characterized in that: The display device comprises the display substrate according to any one of claims 1 to 27.

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