Display substrate and display device

Abstract

The invention particularly relates to a display substrate and a display device. The display substrate disclosed by the invention comprises a light shielding layer which is provided with a first surface facing a substrate; the color filtering part is at least partially located in the light transmitting opening and comprises a first part located on the side, away from the substrate, of the first surface extending face, and the orthographic projection of the first part on the substrate is located in the orthographic projection range of the pixel opening on the substrate; color filtering parts are arranged in the first display area and the second display area, the light-transmitting openings corresponding to the color filtering parts of the same color comprise the first light-transmitting opening located in the first display area and the second light-transmitting opening located in the second display area, and the light-transmitting area of the first light-transmitting opening is larger than that of the second light-transmitting opening; the optical function layer is located in the first display area, and the light transmittance of the optical function layer is smaller than that of the first part. The orthographic projection of the optical function layer on the substrate is partially overlapped with the orthographic projection of the first light transmitting port on the substrate, and surrounds the orthographic projection of the pixel opening of the first display area on the substrate.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and more specifically to a display substrate and a display device. Background Technology

[0002] OLED (organic light emitting diode) display substrates have attracted widespread attention due to their characteristics such as self-illumination, fast response speed, high brightness, wide viewing angle, high contrast, flexibility, low power consumption, low driving voltage, high luminous efficiency, and short response time. As a new generation of display products, they have been widely used in display, lighting and smart wearable fields. Summary of the Invention

[0003] This disclosure aims to solve at least one of the technical problems existing in the prior art, and proposes a display substrate and a display device.

[0004] To achieve the above objectives, this disclosure provides a display substrate having a first display area and a second display area, wherein the display substrate includes:

[0005] Substrate;

[0006] A pixel defining layer is located on one side of the substrate, and the pixel defining layer has multiple pixel openings at positions corresponding to the first display area and positions corresponding to the second display area;

[0007] A light-shielding layer is located on the side of the pixel defining layer away from the substrate and has multiple light-transmitting openings, each of which corresponds to a pixel opening; the light-shielding layer has a first surface facing the substrate;

[0008] Multiple color filters are provided, at least a portion of which are located in the light-transmitting aperture, and include a first portion located on the side of the extension surface of the first surface away from the substrate, and the orthographic projection of the first portion on the substrate is located within the orthographic projection range of the pixel opening on the substrate; multiple color filters of various colors are provided in both the first display area and the second display area, and the light-transmitting aperture corresponding to the same color filter includes a first light-transmitting aperture located in the first display area and a second light-transmitting aperture located in the second display area, and the light-transmitting area of ​​the first light-transmitting aperture is larger than the light-transmitting area of ​​the second light-transmitting aperture;

[0009] At least one optical functional layer is provided, the optical functional layer is located in the first display area and is disposed on the side of the pixel limiting layer away from the substrate, the orthographic projection of the optical functional layer on the substrate partially overlaps with the orthographic projection of the first light-transmitting opening on the substrate, and the orthographic projection of the pixel opening around the first display area on the substrate is also provided; the light transmittance of the optical functional layer is less than the transmittance of the first portion.

[0010] In some embodiments, the at least one optical functional layer includes a first optical functional layer, the first optical functional layer includes a plurality of optical functional parts, each of the optical functional parts corresponds to at least one of the color filter parts, and is connected to the corresponding color filter part to form an integral structure.

[0011] In some embodiments, the thickness of the optical functional portion is greater than the thickness of the first portion of the color filter portion.

[0012] In some embodiments, the thickness difference between the optical functional part and the first part is between 1 and 3 micrometers.

[0013] In some embodiments, the optical functional units correspond one-to-one with the first light-transmitting openings in the first display area and are in a ring structure; the orthographic projections of different optical functional units on the substrate are spaced apart from each other.

[0014] In some embodiments, the surface width of the optical functional part away from the substrate is not less than 3 micrometers.

[0015] In some embodiments, in the first display area, the light-transmitting aperture corresponds one-to-one with the color filter, wherein a plurality of the color filters of one color are connected to form a first continuous film layer, and the orthographic projections of the remaining color filters on the substrate are spaced apart from each other.

[0016] The first optical functional layer includes a plurality of optical functional parts: a first optical functional part and a plurality of second optical functional parts. The first optical functional part is a continuous film layer and is connected to the first continuous film layer as an integral structure. Each second optical functional part corresponds to one of the color filter parts outside the first continuous film layer and is a ring structure.

[0017] In some embodiments, the orthographic projection of the first optical functional part onto the substrate has a first edge facing the second display area, and the first edge is a wavy edge.

[0018] In some embodiments, the first optical functional portion has a first bottom surface facing the substrate, a first top surface away from the substrate, and a side surface connected between the first bottom surface and the first top surface and facing the second display area, wherein the angle between the side surface of the first optical functional portion and the first bottom surface is an acute angle.

[0019] In some embodiments, the surface width of the second optical functional part away from the substrate is not less than 3 micrometers.

[0020] In some embodiments, the display substrate further includes a receiving structure layer located between the pixel defining layer and the light-shielding layer, the receiving structure layer having a plurality of receiving grooves, the orthographic projection of the receiving grooves on the substrate being within the orthographic projection range of the light-transmitting opening on the substrate, and overlapping with the orthographic projection of the pixel opening on the substrate; the color filter portion further includes a second portion located in the receiving grooves;

[0021] The receiving groove has a bottom opening facing the substrate, and the minimum distance between the orthographic projection of the bottom opening on the substrate and the orthographic projection of the first optical functional layer on the substrate is 0 to 2 μm.

[0022] In some embodiments, the first optical functional layer has a first bottom surface facing the substrate, a first top surface away from the substrate, and a first side surface connected between the first bottom surface and the first top surface and facing the central axis of the light-transmitting aperture, wherein the angle between the first side surface and the first bottom surface is between 25° and 55°.

[0023] In some embodiments, the at least one optical functional layer includes a second optical functional layer, which is made of a light-shielding material and is integrally connected with the pixel defining layer.

[0024] In some embodiments, the second optical functional layer includes a plurality of annular light-shielding portions, each annular light-shielding portion corresponding to a pixel opening in the first display area, and the surface width of the annular light-shielding portion away from the substrate is between 3 and 5 micrometers.

[0025] In some embodiments, the thickness of the second optical functional layer is between 0.5 and 1.5 micrometers.

[0026] In some embodiments, the second optical functional layer has a second bottom surface facing the substrate, a second top surface facing away from the substrate, and a second side surface connected between the second bottom surface and the second top surface and facing the pixel opening;

[0027] The angle between the second side surface and the second bottom surface is between 25° and 55°.

[0028] This disclosure provides a display device comprising a display substrate as described in any of the preceding descriptions. Attached Figure Description

[0029] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0030] Figure 1 These are schematic cross-sectional views of the display substrate in some embodiments;

[0031] Figure 2 This is a cross-sectional structural diagram of the display substrate in some other embodiments;

[0032] Figure 3 These are display effect diagrams of the display substrate in some embodiments;

[0033] Figure 4A This is a schematic cross-sectional view of the display substrate in some embodiments of this disclosure;

[0034] Figure 4B This is a schematic diagram of a portion of the film layer structure of the display substrate in some embodiments of this disclosure;

[0035] Figure 5 This is a schematic diagram of the planar structure of the display substrate in some embodiments of this disclosure;

[0036] Figure 6 This is a schematic diagram of the planar structure of the display substrate in some other embodiments of this disclosure;

[0037] Figure 7 This is a cross-sectional structural schematic diagram of the display substrate in some other embodiments of this disclosure;

[0038] Figure 8 This is a schematic diagram of the planar structure of the display substrate in some other embodiments of this disclosure;

[0039] Figure 9 This is a cross-sectional structural schematic diagram of the display substrate in some other embodiments of this disclosure;

[0040] Figure 10 This is a schematic diagram of the planar structure of the display substrate in some other embodiments of this disclosure;

[0041] Figure 11 This is a schematic diagram of the planar structure of the display substrate in some embodiments of this disclosure;

[0042] Figure 12 This is a schematic diagram of the planar structure of the display substrate in some other embodiments of this disclosure;

[0043] Figure 13 This is a cross-sectional structural schematic diagram of the display substrate in some other embodiments of this disclosure;

[0044] Figure 14 This is a cross-sectional structural schematic diagram of the display substrate in some other embodiments of this disclosure;

[0045] Figure 15 This is a schematic diagram of the planar structure of the display substrate in some other embodiments of this disclosure;

[0046] Figure 16 This is a schematic diagram of the planar structure of the display substrate in some other embodiments of this disclosure;

[0047] Figure 17 This is a schematic diagram of the planar structure of the display substrate in some other embodiments of this disclosure;

[0048] Figure 18 This is a schematic diagram of the planar structure of the display substrate in some other embodiments of this disclosure. Detailed Implementation

[0049] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0051] Unless otherwise defined, the technical or scientific terms used in the embodiments of this disclosure should have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0052] As used herein, “parallel” and “perpendicular” include the described situation and situations that are similar to the described situation, within an acceptable range of deviation, which is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, “parallel” includes absolute parallelism and approximate parallelism, where an acceptable range of deviation for approximate parallelism may be, for example, within 5°; “perpendicular” includes absolute perpendicularity and approximate perpendicularity, where an acceptable range of deviation for approximate perpendicularity may also be, for example, within 5°.

[0053] It should be understood that when a layer or element is referred to as being on another layer or substrate, it can mean that the layer or element is directly on the other layer or substrate, or that there is an intermediate layer between the layer or element and the other layer or substrate.

[0054] This document describes exemplary embodiments with reference to sectional views and / or plan views, which are idealized exemplary drawings. In the drawings, the thickness of layers and regions is enlarged for clarity. Therefore, variations in shape relative to the drawings are contemplated due to, for example, manufacturing techniques and / or tolerances. Therefore, exemplary embodiments should not be construed as limited to the shapes of the regions shown herein, but rather include shape deviations due to, for example, manufacturing processes. Thus, the regions shown in the drawings are schematic in nature, and their shapes are not intended to show the actual shapes of the regions of the device, nor are they intended to limit the scope of the exemplary embodiments.

[0055] OLED display substrates have advantages such as low cost, short response time, high brightness, low driving voltage, and the ability to realize flexible light sources. They have been successfully applied in display fields such as smartphones and TVs.

[0056] Figure 1 These are schematic cross-sectional views of the display substrate in some embodiments. Figure 2 This is a cross-sectional structural diagram of the display substrate in some other embodiments.

[0057] like Figure 1 and Figure 2As shown, the display substrate includes a substrate 10 and a light-emitting device 30 located on one side of the substrate 10. The light-emitting device 30 includes a first electrode 31, a light-emitting layer 32, and a second electrode 33 sequentially disposed along a direction away from the substrate 10. The first electrode 31 may be, for example, an anode, and the second electrode 33 may be, for example, a cathode. Under the action of an electrical signal between the first electrode 31 and the second electrode 33, the light-emitting layer 32 can emit light. The display substrate also includes a pixel defining layer 20 located on the side of the anode away from the substrate 10. The pixel defining layer 20 has multiple pixel openings, and at least a portion of the light-emitting devices 30 is located within these pixel openings; for example, at least a portion of the light-emitting layer 32 is located within the pixel openings. The light emitted by the multiple light-emitting devices 30 can be of various colors, including, for example, red, green, and blue.

[0058] Furthermore, the display substrate also includes an encapsulation layer 40 located on the side of the light-emitting device 30 away from the substrate 10. The encapsulation layer 40 is used to encapsulate the plurality of light-emitting devices 30. A receiving structure layer 50 and a plurality of color filters 90 are provided on the side of the encapsulation layer 40 away from the substrate 10. The receiving structure layer 50 has receiving grooves corresponding to pixel openings, and at least a portion of the color filters 90 is disposed in the corresponding receiving grooves. The color filters 90 correspond one-to-one with the light-emitting devices 30 and are used to transmit the light emitted by the corresponding light-emitting device. By providing color filters 90 on the light-emitting side of the light-emitting device 30, the color gamut of the display substrate can be improved.

[0059] A light-shielding layer 60, such as a black matrix (BM) layer, is disposed on the side of the accommodating structure layer 50 away from the substrate 10. The orthographic projection of the light-shielding layer 60 onto the substrate 10 does not overlap with the orthographic projection of the pixel opening onto the substrate 10. It can be understood that the light-shielding layer 60 has light-transmitting openings corresponding one-to-one with the accommodating slots, and the area between adjacent light-transmitting openings is a gap area. At least a portion of the color filter 90 is located in the light-transmitting opening. By providing the light-shielding layer 60, crosstalk between the colored light emitted by adjacent light-emitting devices 30 can be avoided, and ambient light can be prevented from entering the display substrate. A driving circuit layer is also disposed between the light-emitting device 30 and the substrate 10 to provide driving signals to the light-emitting device 30 to drive the light-emitting device 30 to emit light. The driving circuit layer contains an opaque metal layer. If ambient light enters the interior of the display substrate from the gap area, it may be reflected by the driving circuit layer, thereby affecting the display effect of the display substrate. In some embodiments, the display substrate also includes a planarization layer between the driving circuit layer and the light-emitting device 30. The second electrode 33 of the light-emitting device 30 is electrically connected to the driving circuit layer through a via penetrating the planarization layer. Furthermore, the second electrodes 33 of multiple light-emitting devices 30 are connected to form a continuous electrode layer.

[0060] During the fabrication of the light-shielding layer 60, due to process limitations, severe tapering peeling occurs in some display areas of the display substrate. Specifically, compared to... Figure 1 and Figure 2 , Figure 1 The image shows the light-shielding layer 60 obtained under normal manufacturing process conditions. Figure 2 The diagram shows the light-shielding layer 60 during tape peeling. A properly fabricated light-shielding layer 60 means that the distance between the edge of the lower surface of the light-shielding layer 60 facing the substrate near the light-transmitting opening and the edge of the corresponding receiving groove in the receiving structure layer 50 away from the substrate is within a predetermined appropriate range, for example, 0–2 μm. However, during tape peeling, the distance between the edge of the lower surface of the light-shielding layer 60 facing the substrate near the light-transmitting opening and the edge of the corresponding receiving groove in the receiving structure layer 50 away from the substrate far exceeds this reasonable distance, for example, 5 μm. Clearly, Figure 2 Compared to the light-shielding layer 60 in the middle Figure 1 The light-shielding layer 60 is partially missing, which increases the width of the light-transmitting aperture from d1 to d2, enlarging its area and reducing the effective blocking area of ​​the light-shielding layer 60. This results in more ambient light entering the display substrate and increased reflected light in the driving circuit layer. Furthermore, within the same display substrate, the light-transmitting apertures of the light-shielding layers 60 corresponding to the same color filter 90 vary in size, causing issues such as alternating bright and dark vertical stripes in the display. Figure 3 These are display effect diagrams of the display substrate in some embodiments, wherein, Figure 3 (a) shows the display effect of the display substrate when the light-shielding layer 60 is normal. Figure 3 (b) shows the display effect of the display substrate when the light-shielding layer 60 undergoes tape peeling. (Comparison) Figure 3 As can be seen from (a) and (b) in the figure, after the light-shielding layer 60 undergoes tape peeling, the brightness at the light-transmitting port is too high, forming a bright stripe area; while at the location where the light-shielding layer 60 does not undergo tape peeling, the brightness at the light-transmitting port is relatively low, forming a dark stripe area. Thus, the display substrate as a whole exhibits alternating bright and dark stripes, affecting the normal display effect of the display substrate.

[0061] In order to at least alleviate and solve one of the aforementioned technical problems, this disclosure provides a display substrate and a display device.

[0062] Figure 4A This is a schematic diagram of the planar structure of the display substrate in some embodiments of this disclosure. Figure 4B This is a schematic diagram of a portion of the film layer structure of the display substrate in some embodiments of this disclosure. Figure 5This is a schematic cross-sectional view of the display substrate in some embodiments of this disclosure, specifically along... Figure 4A A schematic diagram of the cross-sectional structure of a cut with the BC line. Figure 6 This is a schematic cross-sectional view of the display substrate in some other embodiments of this disclosure, specifically along... Figure 4A A schematic diagram of the cross-sectional structure cut by the middle cutting line DE.

[0063] In some embodiments, such as Figure 4A As shown, this disclosure provides a display substrate having a first display area AA1 and a second display area AA2, wherein, as Figure 4B As shown, the width d2 of the light-transmitting opening in the first display area AA1 is greater than the width d1 of the light-transmitting opening in the second display area AA2.

[0064] Figure 5 Specifically, it is a cross-sectional structural diagram of the first display area AA1 in the display substrate. Figure 6 Specifically, this is a cross-sectional structural diagram of the second display area AA2.

[0065] like Figure 5 As shown, the display substrate of this disclosure includes: a substrate 10, a pixel defining layer 20, a light-shielding layer 60, a plurality of color filter portions 90, and at least one optical functional layer 100.

[0066] The pixel defining layer 20 is located on one side of the substrate 10, and the pixel defining layer 20 has multiple pixel openings at positions corresponding to the first display area AA1 and the second display area AA2.

[0067] The light-shielding layer 60 is located on the side of the pixel limiting layer 20 away from the substrate 10, and has multiple light-transmitting openings, each corresponding to a pixel opening. The light-shielding layer 60 has a first surface facing the substrate 10.

[0068] Each color filter 90 corresponds to a pixel opening and a light-transmitting opening. The orthographic projection of the color filter 90 onto the substrate 10 overlaps with the orthographic projection of the pixel opening onto the substrate 10. At least a portion of each color filter 90 is located in its corresponding light-transmitting opening. The color filter 90 includes a first portion 901, wherein the first portion 901 is located on the side of the extension surface of the first surface away from the substrate 10, and the orthographic projection of the first portion 901 onto the substrate 10 is within the range of the orthographic projection of the pixel opening onto the substrate 10.

[0069] Both the first display area AA1 and the second display area AA2 are provided with color filters 90 of various colors, such as a blue filter 93, a red filter 92, and a green filter 91. The light-transmitting ports corresponding to the same color filter 90 include a first light-transmitting port in the first display area AA1 and a second light-transmitting port in the second display area AA2. For example, the light-transmitting port corresponding to the blue filter 93 includes a first light-transmitting port in the first display area AA1 and a second light-transmitting port in the second display area AA2; the light-transmitting port corresponding to the red filter 92 includes a first light-transmitting port in the first display area AA1 and a second light-transmitting port in the second display area AA2; and the light-transmitting port corresponding to the green filter 91 includes a first light-transmitting port in the first display area AA1 and a second light-transmitting port in the second display area AA2.

[0070] Furthermore, the light-transmitting area of ​​the first light-transmitting port is larger than that of the second light-transmitting port. It should be noted that those skilled in the art should understand that the first and second light-transmitting ports compared in the phrase "the light-transmitting area of ​​the first light-transmitting port is larger than that of the second light-transmitting port" refer to the first and second light-transmitting ports corresponding to the same color filter section 90. The light-transmitting area of ​​the first light-transmitting port (or the second light-transmitting port) refers to the orthogonal projection area of ​​the first light-transmitting port (or the second light-transmitting port) on the substrate 10.

[0071] In addition, those skilled in the art should understand that the light-transmitting area of ​​the first light-transmitting opening is greater than that of the second light-transmitting opening, which means that the first display area AA1 corresponds to the bright stripe area and the second display area AA2 corresponds to the dark stripe area.

[0072] like Figure 4A and Figure 6 As shown, the optical functional layer 100 is located in the first display area AA1, and the optical functional layer 100 is disposed on the side of the pixel limiting layer 20 away from the substrate 10. The orthographic projection of the optical functional layer 100 on the substrate 10 partially overlaps with the orthographic projection of the first light-transmitting opening on the substrate 10, and the orthographic projection of the optical functional layer 100 on the substrate 10 surrounds the orthographic projection of the pixel opening of the first display area AA1 on the substrate 10. The light transmittance of the optical functional layer 100 is less than the transmittance of the first portion 901.

[0073] In this embodiment, the light-shielding layer 60 has a larger light-transmitting area at the first light-transmitting opening in the first display area AA1 than at the second light-transmitting opening in the second display area AA2. This means that the light-shielding layer 60 in the second display area AA2 is a normally fabricated layer, while the light-shielding layer 60 in the first display area AA1 suffers from tape peeling. In this embodiment, at least one optical functional layer 100 is disposed on the side of the pixel-limiting layer 20 away from the substrate 10 in the first display area AA1. The orthographic projection of the optical functional layer 100 onto the substrate 10 partially overlaps with the orthographic projection of the first light-transmitting opening onto the substrate 10, and the transmittance of the optical functional layer 100 is less than the transmittance of the first portion 901. This means that the optical functional layer 100 can absorb or block light at the edge of the larger first light-transmitting opening, thereby reducing the difference between the actual light-transmitting area of ​​the larger first light-transmitting opening and the actual light-transmitting area of ​​the second light-transmitting opening. This reduces the difference in reflectivity of the first display area AA1 and the second display area AA2 to ambient light, improving the problem of poor brightness and darkness stripes.

[0074] It should be noted that, as Figure 4A and Figure 6 As shown, the display substrate does not have an optical functional layer 100 in the second display area AA2. At least a portion of the color filter 90 in the second display area AA2 is located in the second light-transmitting aperture, for example, in Figure 6 In the illustrated embodiment, a portion of the color filter 90 in the second display area AA2 is located in the second light-transmitting aperture, and another portion is located on the side of the light-shielding layer 60 away from the substrate 10.

[0075] Optionally, the color filter 90 has a refractive index of 1.6 to 1.75 and a thickness of 2.2 to 5 micrometers. The light-shielding layer 60 is a black matrix layer with a thickness of 1 to 1.5 micrometers.

[0076] In some embodiments, such as Figure 4A As shown, at least one optical functional layer 100 includes a first optical functional layer 101. The first optical functional layer 101 includes a plurality of optical functional parts 110, each optical functional part 110 corresponding to at least one color filter part 90, and connected to the corresponding color filter part 90 to form an integral structure.

[0077] In this embodiment, each optical functional unit 110 corresponds to at least one color filter unit 90 and is connected to the corresponding color filter unit 90 to form an integral structure. Specifically, the optical functional unit 110 corresponding to the blue filter unit 93 is integrally formed with the blue filter unit 93; the optical functional unit 110 corresponding to the red filter unit 92 is integrally formed with the red filter unit 92; and the optical functional unit 110 corresponding to the green filter unit 91 is integrally formed with the green filter unit 91. The integral structure connection in this embodiment indicates that the optical functional unit 110 and the corresponding color filter unit 90 are made of the same material and are connected as a single unit. The color filter unit 90 can filter out at least a portion of light wavelengths. For example, the blue filter unit 93 can filter out light other than blue light, the green filter unit 91 can filter out light other than green light, and the red filter unit 92 can filter out light other than red light. Therefore, the first optical functional layer 101 of this disclosure can also filter light, thereby filtering out light from the edge of the originally large first light-transmitting aperture, reducing the reflectivity difference between bright and dark stripe areas, and improving the problem of poor bright and dark stripe quality. Furthermore, in this embodiment, the optical functional unit 110 and the corresponding color filter unit 90 are connected as an integral structure. That is, in this embodiment, the first optical functional layer 101 and the color filter unit 90 can be fabricated in the same process, thereby reducing the difficulty of fabrication and reducing the fabrication cost.

[0078] In some embodiments, such as Figure 5 As shown, the thickness D1 of the optical functional section 110 is greater than the thickness D2 of the first part 901 of the color filter section 90.

[0079] In this embodiment of the present disclosure, the thickness of the optical functional part 110 is greater than the thickness of the first part 901 of the color filter part 90. That is, compared with the first part 901, the optical functional part 110 has a stronger light-blocking or light-absorbing ability. Therefore, the optical functional part 110 in this embodiment of the present disclosure can increase the light-blocking ability at the edge position in the first light-transmitting aperture, thereby reducing the reflectivity difference between the bright and dark stripe areas and improving the problem of poor bright and dark stripe quality.

[0080] In some embodiments, such as Figure 5As shown, the thickness difference, D1-D2, between the optical functional unit 110 and the first part 901 is between 1 and 3 micrometers. For example, the thickness difference can be 1 micrometer, 1.1 micrometer, 1.2 micrometer, 1.3 micrometer, 1.4 micrometer, 1.5 micrometer, 1.6 micrometer, 1.7 micrometer, 1.8 micrometer, 1.9 micrometer, 2 micrometer, 2.1 micrometer, 2.2 micrometer, 2.3 micrometer, 2.4 micrometer, 2.5 micrometer, 2.6 micrometer, 2.7 micrometer, 2.8 micrometer, 2.9 micrometer, or 3 micrometer. This can be understood as follows: compared to the second light-transmitting opening in the second display area AA2, this embodiment adds an additional filter material with a thickness in the range of 1 to 3 micrometers in the first light-transmitting opening of the first display area AA1 to further block or absorb the light from the first display area AA1, thereby reducing the difference in reflectivity between the first display area AA1 and the second display area AA2.

[0081] In some embodiments, such as Figure 5 As shown, the display substrate also includes a receiving structure layer 50 located between the pixel defining layer 20 and the light-shielding layer 60. The receiving structure layer 50 has a plurality of receiving grooves. The orthographic projection of the receiving grooves on the substrate 10 is within the orthographic projection range of the light-transmitting aperture on the substrate 10 and overlaps with the orthographic projection of the pixel aperture on the substrate 10. The color filter section 90 also includes a second portion 902 located in the receiving grooves. The receiving grooves have bottom openings facing the substrate 10. The minimum distance D4 between the orthographic projection of the bottom opening on the substrate 10 and the orthographic projection of the first optical functional layer 101 on the substrate 10 is 0 to 2 μm, thereby ensuring that the orthographic projection of the first optical functional layer 101 surrounds the orthographic projection of the pixel aperture and overlaps with the orthographic projection of the light-transmitting aperture. For example, the minimum distance can be 0, 0.1 micrometers, 0.2 micrometers, 0.3 micrometers, 0.4 micrometers, 0.5 micrometers, 0.6 micrometers, 0.7 micrometers, 0.8 micrometers, 0.9 micrometers, 1 micrometer, 1.1 micrometers, 1.2 micrometers, 1.3 micrometers, 1.4 micrometers, 1.5 micrometers, 1.6 micrometers, 1.7 micrometers, 1.8 micrometers, 1.9 micrometers, or 2 micrometers.

[0082] Optionally, the accommodating structural layer 50 is made of a light-transmitting resin with a refractive index of 1.45 to 1.5.

[0083] Optionally, such as Figure 5 and Figure 6 As shown, the display substrate also includes a cover layer 70 located on the side of the light-shielding layer 60 away from the substrate 10. The light cover layer 70 is made of a light-transmitting resin with a refractive index of 1.45 to 1.5 and a thickness of 2 to 4 micrometers.

[0084] Optionally, such as Figure 5 and Figure 6 As shown, the display substrate also includes an encapsulation layer 40 located between the accommodating structure layer 50 and the second electrode 33.

[0085] Optionally, such as Figure 5 and Figure 6 As shown, the display substrate also includes a touch structure layer 80 located between the encapsulation layer 40 and the housing structure layer 50 to enable touch control. The orthographic projection of the touch structure layer 80 onto the substrate 10 can be within the orthographic projection range of the light-shielding layer 60 onto the substrate 10.

[0086] Figure 7 This is a schematic diagram of the planar structure of the display substrate in some other embodiments of this disclosure. Figure 8 This is a schematic cross-sectional view of the display substrate in some other embodiments of this disclosure, specifically along... Figure 7 A schematic diagram of the cross-sectional structure of the first display area AA1 of the display substrate, cut by the cutting line BC.

[0087] In some embodiments, such as Figure 4A and Figure 7 As shown, the light-transmitting openings in the first display area AA1 correspond one-to-one with the color filter sections 90. Multiple color filter sections 90 of one color are connected to form a first continuous film layer, while the orthographic projections of the remaining color filter sections 90 on the substrate 10 are spaced apart. For example, green filter sections 91 are connected to form a first continuous film layer, and the orthographic projections of red filter sections 92 and blue filter sections 93 on the substrate 10 are spaced apart. The continuous film layer disclosed herein does not refer to a single, complete film layer, but rather to a film layer that can have openings in the middle but remains a single unit. It can also be understood that by patterning the green filter material layer to form a first opening and a second opening, the green filter section 91 connected as a continuous film layer can be obtained. Further, a blue filter section 93 can be formed within the first opening, and a red filter section 92 can be formed within the second opening.

[0088] In other embodiments, the orthographic projections of color filter portions 90 of the same color onto the substrate 10 are spaced apart from each other. That is, the color filter portions 90 of the same color may not be connected as a continuous film layer in an integral structure. In this case, it is only necessary to form an optical functional portion 110 connected to the color filter portion 90 as an integral structure on the side of the color filter portion 90 away from the substrate 10.

[0089] like Figures 4A to 8As shown, the first optical functional layer 101 includes multiple optical functional units 110: a first optical functional unit 111 and multiple second optical functional units 112. The first optical functional unit 111 is a continuous film layer and is integrally connected to the first continuous film layer. Each second optical functional unit 112 corresponds to a color filter unit 90 outside the first continuous film layer and is in a ring structure. For example, if the first optical functional unit 111 corresponds to the green filter unit 91, and the second optical functional unit 112 corresponds to the blue filter unit 93 or the red filter unit 92, then the first optical functional unit 111 corresponding to the green filter unit 91 is integrally connected to the continuous film layer. Furthermore, the continuous film layer integrally connected to the first optical functional unit 111 corresponding to the green filter unit 91 is also integrally connected to the green filter unit 91. At this time, the first optical functional part 111 and the second optical functional part 112 can be fabricated simultaneously with the corresponding color filter part 90. For example, the first optical functional part 111 can be fabricated simultaneously with the green filter part 91, a portion of the second optical filter part 112 can be fabricated simultaneously with the blue filter part 93, and another portion of the second optical filter part 112 can be fabricated simultaneously with the red filter part 92. The embodiments disclosed herein can ensure the light-shielding effect of the first optical functional layer 101 while simplifying the fabrication process and reducing the fabrication difficulty.

[0090] In some embodiments, such as Figure 4A and Figure 7 As shown, the orthographic projection of the first optical functional unit 111 onto the substrate 10 has a first edge L facing the second display area AA2, and the first edge L is a wavy edge. That is, the boundary between the first display area AA1 and the second display area AA2 is a wavy line.

[0091] In this embodiment, the boundary between the first display area AA1 and the second display area AA2 is designed as a wavy line, which can reduce diffraction and improve color separation.

[0092] Furthermore, since the continuous film layer formed by the first optical functional unit 111 is located in the first display area AA1, while the second display area AA2 does not have the first optical functional unit 111, there is a height difference in the filter material layer at the boundary between the first display area AA1 and the second display area AA2. Therefore, in order to further reduce diffraction and improve color separation, the side surface of the first optical functional unit 111 is designed as a slope in this embodiment. Specifically, the first optical functional unit 111 has a first bottom surface facing the substrate 10, a first top surface away from the substrate 10, and a side surface connecting the first bottom surface and the first top surface and facing the second display area AA2. The angle between the side surface of the first optical functional unit 111 and the first bottom surface is an acute angle.

[0093] In this embodiment, the first edge L is designed with a side slope based on a wavy edge. That is, in this embodiment, a wavy slope design is used at the boundary between the first display area AA1 and the second display area AA2 to further reduce diffraction and improve color separation.

[0094] In some embodiments, such as Figure 8 As shown, the surface widths W1 and W2 of the second optical functional unit 112 away from the substrate 10 are both not less than 3 micrometers, thereby further ensuring the filtering effect of the second optical functional unit 112 at the edge position in the first light-transmitting aperture. For example, W1 and W2 can be 3 micrometers, 3.1 micrometers, 3.2 micrometers, 3.3 micrometers, 3.4 micrometers, 3.5 micrometers, 3.6 micrometers, 3.7 micrometers, 3.8 micrometers, 3.9 micrometers, 4 micrometers, 4.1 micrometers, 4.2 micrometers, 4.3 micrometers, 4.4 micrometers, 4.5 micrometers, 4.6 micrometers, 4.7 micrometers, 4.8 micrometers, 4.9 micrometers, or 5 micrometers.

[0095] Figure 9 This is a schematic diagram of the planar structure of the display substrate in some other embodiments of this disclosure. Figure 10 This is a schematic cross-sectional view of the display substrate in some other embodiments of this disclosure, specifically along... Figure 9 A schematic diagram of the cross-sectional structure of the first display area AA1 of the display substrate, cut by the cutting line BC.

[0096] In some embodiments, such as Figure 9 and Figure 10 As shown, each first optical functional unit 111 corresponds to a color filter 90 of one color, and each second optical functional unit 112 corresponds to a color filter 90 of another color, and both the first optical functional unit 111 and the second optical functional unit 112 are ring structures. For example, each first optical functional unit 111 corresponds to a green filter 91, a portion of the second optical functional units 112 corresponds one-to-one with a red filter 92, and another portion of the second optical functional units 112 corresponds one-to-one with a blue filter 93. Further, the first optical functional unit 111 and the corresponding green filter 91 are connected to form an integral structure. The second optical functional unit 112 and the corresponding red filter 92 or blue filter 93 are connected to form an integral structure.

[0097] In some embodiments, such as Figure 10As shown, the surface width W3 of the first optical functional unit 111 away from the substrate 10 is not less than 3 micrometers, thereby further ensuring the filtering effect of the second optical functional unit 112 at the edge position in the first light-transmitting aperture. For example, it can be 3 micrometers, 3.1 micrometers, 3.2 micrometers, 3.3 micrometers, 3.4 micrometers, 3.5 micrometers, 3.6 micrometers, 3.7 micrometers, 3.8 micrometers, 3.9 micrometers, 4 micrometers, 4.1 micrometers, 4.2 micrometers, 4.3 micrometers, 4.4 micrometers, 4.5 micrometers, 4.6 micrometers, 4.7 micrometers, 4.8 micrometers, 4.9 micrometers, or 5 micrometers.

[0098] In some embodiments, the first optical functional layer 101 has a first bottom surface facing the substrate 10, a first top surface away from the substrate 10, and a first side surface connected between the first bottom surface and the first top surface and facing the central axis of the light-transmitting aperture. The angle between the first side surface and the first bottom surface is between 25° and 55°. For example, the angle between the first side surface and the first bottom surface can be 25°, 26°, 27°, 28°, 29°, 30°, 31°, 32°, 33°, 34°, 35°, 36°, 37°, 38°, 39°, 40°, 41°, 42°, 43°, 44°, 45°, 46°, 47°, 48°, 49°, 50°, 51°, 52°, 53°, 54°, or 55°.

[0099] Furthermore, the first optical functional layer 101 also has a third side surface connected between the first bottom surface and the first top surface and facing away from the central axis of the light-transmitting aperture. The angle between the third side surface and the first bottom surface is between 25° and 55°. For example, the angle between the third side surface and the first bottom surface can be 25°, 26°, 27°, 28°, 29°, 30°, 31°, 32°, 33°, 34°, 35°, 36°, 37°, 38°, 39°, 40°, 41°, 42°, 43°, 44°, 45°, 46°, 47°, 48°, 49°, 50°, 51°, 52°, 53°, 54°, or 55°.

[0100] In this embodiment, the angle between the first side surface and the first bottom surface of the first optical functional layer 101 is controlled between 25° and 55°. That is, in this embodiment, the first side surface of the first optical functional layer 101 adopts a slope design. Further, it can be understood that the side surface of the optical functional unit 110 (including the first optical functional unit 111 and the second optical functional unit 112) facing the central axis of the light-transmitting aperture also adopts a slope design. The slope design of the first side surface of the first optical functional layer 101 in this embodiment allows the first optical functional layer 101 to be relatively thin near the light-transmitting aperture, ensuring a light-shielding effect while avoiding obstruction of the light-transmitting aperture.

[0101] Figure 11This is a schematic diagram of the planar structure of the display substrate in some other embodiments of this disclosure. Figure 12 This is a schematic cross-sectional view of the display substrate in some other embodiments of this disclosure, specifically along... Figure 11 The diagram shows a cross-sectional structure of the substrate cut by the BC cutting line.

[0102] In some embodiments, such as Figure 9 and Figure 11 As shown, the optical functional units 110 correspond one-to-one with the first light-transmitting openings in the first display area AA1, and are annular structures. The annular structures in this embodiment include circular annular rings and polygonal annular rings, wherein the circular and polygonal shapes can be regular or irregular. The orthographic projections of different optical functional units 110 on the substrate 10 are spaced apart from each other. Furthermore, it should be noted that the ring widths of the orthographic projections of the same annular structure on the substrate 10 can also be unequal.

[0103] Specifically, in Figure 4A and Figure 7 In this structure, because the first optical functional unit 111 is connected as a continuous film layer of an integral structure, the first optical functional unit 111 is not a ring structure. Each second optical functional unit 112 is an independent ring structure, wherein... Figure 4A The ring width of the second optical functional unit 112 is greater than Figure 7 The ring width of the second optical functional section. Figure 9 and Figure 11 In this structure, each first optical functional unit 111 and each second optical functional unit are independent ring structures.

[0104] In this embodiment of the present disclosure, the optical functional unit 110 is configured as a ring structure, which enables filtering of light at various positions on the edge of the first light-transmitting aperture, thereby ensuring the filtering effect of the optical functional unit 110 at the edge position of the first light-transmitting aperture.

[0105] Figure 13 This is a schematic cross-sectional view of the display substrate in some other embodiments of this disclosure. Figure 14 This is a cross-sectional structural diagram of the display substrate in some other embodiments of this disclosure. Figure 13 and Figure 14 Specifically, this is a cross-sectional structural diagram of the first display area AA1.

[0106] In other embodiments, such as Figure 13 and Figure 14 As shown, at least one optical functional layer 100 includes a second optical functional layer 102, wherein, Figure 13 A cross-sectional view of a display substrate with only the second optical functional layer 102. Figure 14This is a cross-sectional structural diagram of a display substrate that simultaneously has a first optical functional layer 101 and a second optical functional layer 102. The second optical functional layer 102 is made of a light-shielding material and is integrated with the pixel limiting layer 20.

[0107] In this embodiment, the second optical functional layer 102 is a light-shielding material, capable of blocking ambient light incident into the first light-transmitting aperture of the first display area AA1. Simultaneously, the pixel-defining layer 20 is made of the same material as the second optical functional layer 102, also a light-shielding material. Therefore, the integrated light-shielding structure can absorb ambient light incident towards the edge of the first light-transmitting aperture, thereby reducing the reflection of ambient light by the first display area AA1. Furthermore, since the second optical functional layer 102 and the pixel-defining layer 20 are an integrated structure, the pixel-defining layer 20 and the second optical functional layer 102 can be fabricated simultaneously, thereby simplifying the fabrication process and saving costs.

[0108] In some embodiments, such as Figure 13 and Figure 14 As shown, the second optical functional layer 102 includes a plurality of annular light-shielding portions 121, each corresponding to a pixel opening in the first display area AA1. The surface width of the annular light-shielding portion 121 away from the substrate 10 is between 3 and 5 micrometers, for example, it can be 3 micrometers, 3.1 micrometers, 3.2 micrometers, 3.3 micrometers, 3.4 micrometers, 3.5 micrometers, 3.6 micrometers, 3.7 micrometers, 3.8 micrometers, 3.9 micrometers, 4 micrometers, 4.1 micrometers, 4.2 micrometers, 4.3 micrometers, 4.4 micrometers, 4.5 micrometers, 4.6 micrometers, 4.7 micrometers, 4.8 micrometers, 4.9 micrometers, or 5 micrometers.

[0109] In this embodiment, the annular light-shielding portion 121 is located on the side of the pixel limiting layer 20 away from the substrate 10. It can increase the thickness of the light-shielding material that is not blocked by the BM, improve the light-shielding ability of the pixel opening edge, reduce the reflectivity, thereby reducing the reflectivity difference between this area and the dark stripe area, and improving the bright and dark stripe defects.

[0110] In some embodiments, such as Figure 13 and Figure 14 As shown, the annular light-shielding portion 121, with its edge near the pixel opening on the surface of the substrate 10, coincides with the orthographic projection of the edge near the pixel opening on the surface of the pixel defining layer 20 away from the substrate 10 onto the substrate. This embodiment of the present disclosure enables the annular light-shielding portion 121 to block or absorb light outside the pixel opening along the edge of the pixel opening.

[0111] In some embodiments, such as Figure 13As shown, the thickness D3 of the second optical functional layer 102 is between 0.5 and 1.5 micrometers. For example, the thickness can be 0.5 micrometers, 0.6 micrometers, 0.7 micrometers, 0.8 micrometers, 0.9 micrometers, 1 micrometer, 1.1 micrometers, 1.2 micrometers, 1.3 micrometers, 1.4 micrometers, or 1.5 micrometers.

[0112] In this embodiment, the second optical functional layer 102 is a light-shielding material. Therefore, the thickness of the second optical functional layer 102 is set between 0.5 and 1.5 micrometers to produce the required shielding effect on the ambient light directed toward the edge of the first light-transmitting aperture, and to prevent the second electrode of the light-emitting device from breaking due to excessive thickness of the second optical functional layer 102.

[0113] In some embodiments, the second optical functional layer 102 has a second bottom surface facing the substrate 10, a second top surface facing away from the substrate 10, and a second side surface connected between the second bottom surface and the second top surface and facing the pixel opening; the included angle between the second side surface and the second bottom surface is between 25° and 55°, for example, the angle between the second side surface and the first bottom surface can be 25°, 26°, 27°, 28°, 29°, 30°, 31°, 32°, 33°, 34°, 35°, 36°, 37°, 38°, 39°, 40°, 41°, 42°, 43°, 44°, 45°, 46°, 47°, 48°, 49°, 50°, 51°, 52°, 53°, 54°, or 55°.

[0114] That is, in this embodiment of the present disclosure, the second side of the second optical functional layer 102 adopts a slope design. Further, it can be understood that the side of the annular light-shielding portion 121 adopts a slope design. The slope design of the second side of the second optical functional layer 102 in this embodiment of the present disclosure allows the second optical functional layer 102 to be relatively thin near the pixel opening, ensuring the light-shielding effect while avoiding obstruction of the pixel opening.

[0115] Figure 15 This is a schematic diagram of the planar structure of the display substrate in some other embodiments of this disclosure. Figure 16 This is a schematic diagram of the planar structure of the display substrate in some other embodiments of this disclosure. Figure 17 This is a schematic diagram of the planar structure of the display substrate in some other embodiments of this disclosure. Figure 18 This is a schematic diagram of the planar structure of the display substrate in some other embodiments of this disclosure.

[0116] In some embodiments, such as Figure 4A , Figure 7 , Figure 9 , Figure 11 ,as well as Figures 15 to 18As shown, in the first display area AA1, the shape of the integrated structure formed by the color filter unit 90 and the corresponding optical functional unit 110 projected onto the substrate 10 can be set according to the actual situation. For example, it can be set as a circle or a polygon. The polygon can be, for example, a rhombus or a square.

[0117] exist Figure 4A , Figure 7 , Figure 15 and Figure 16 In the first display area AA1 of the display substrate shown, the first optical functional unit is connected as a continuous film layer and is integrated with the green filter unit 91. The orthographic projection of this integrated structure on the substrate 10 does not overlap with the orthographic projections of the second optical functional unit 112, the blue filter unit 93, and the red filter unit 92 on the substrate 10. Alternatively, it can be understood that this integrated structure covers the area of ​​the first display area AA1 other than the second optical functional unit 112, the blue filter unit 93, and the red filter unit 92. Figure 4A and Figure 7 In the first display area AA1 of the display substrate shown, the integrated structure formed by connecting the red filter 92 and the corresponding second optical functional part 112 has a circular shape when projected onto the substrate 10. Similarly, the integrated structure formed by connecting the blue filter 93 and the corresponding second optical functional part 112 also has a circular shape when projected onto the substrate 10. Figure 15 and Figure 16 In the first display area AA1 of the display substrate shown, the shape of the integrated structure formed by connecting the red filter 92 and the corresponding second optical functional part 112 on the substrate 10 is a rhombus, and the shape of the integrated structure formed by connecting the blue filter 93 and the corresponding second optical functional part 112 on the substrate 10 is also a rhombus.

[0118] exist Figure 9 , Figure 11 , Figure 17 and Figure 18 In the first display area AA1 of the display substrate shown, the integrated structure formed by connecting the green filter 91 and the corresponding first optical functional part 111 on the substrate 10 does not overlap with the orthographic projections of the second optical functional part 112, the blue filter 93, and the red filter 92 on the substrate 10. Figure 9 and Figure 11 In the first display area AA1 of the display substrate shown, the integrated structure formed by connecting the blue filter 93 and the corresponding second optical functional unit 112 has a circular shape when projected orthographically onto the substrate 10. Similarly, the integrated structure formed by connecting the red filter 92 and the corresponding second optical functional unit 112 also has a circular shape when projected orthographically onto the substrate 10. Figure 17 and Figure 18In the first display area AA1 of the display substrate shown, the shape of the integrated structure formed by connecting the red filter 92 and the corresponding second optical functional part 112 on the substrate 10 is a rhombus, and the shape of the integrated structure formed by connecting the blue filter 93 and the corresponding second optical functional part 112 on the substrate 10 is also a rhombus.

[0119] exist Figure 4A , Figure 7 , Figure 9 and Figure 11 In the second display area AA2 of the display substrate shown, no optical functional layer 100 is provided, that is, there is no optical functional part 110. Therefore, the orthographic projection of the color filter part 90 in the second display area AA2 onto the substrate 10 is circular. Figures 15 to 18 In the second display area AA2 of the display substrate shown, the orthographic projection of the color filter 90 onto the substrate 10 is a rhombus.

[0120] Of course, those skilled in the art should understand that when each color filter 90 is spaced apart from each other, for example, the green filter 91 is not connected as a single structure, but is independent like the red filter 92 and the blue filter 93. Therefore, the integrated structure formed by the green filter 91 and its corresponding first optical functional unit 111 is similar in shape to or the same as the integrated structure formed by the red filter 92 or the blue filter 93 and its corresponding second optical functional unit 112. Further details regarding the embodiments disclosed herein will not be elaborated upon.

[0121] Optionally, the circular or polygonal shape can be regular or irregular, and the size of the light-transmitting openings corresponding to different colored filters can be the same or different; this disclosure does not impose any limitations on these embodiments. For example, the size of the light-transmitting opening corresponding to the green filter 91 and the size of the light-transmitting opening corresponding to the blue filter 93 are different.

[0122] Optionally, the shape of the pixel opening projected onto the substrate 10 can be circular or polygonal.

[0123] Further optionally, the shapes of the pixel opening and the light-transmitting opening projected onto the substrate 10 can be the same or different. For example, in... Figure 4A , Figure 7 , Figure 9 , Figure 11 In the illustrated embodiment, the orthographic projections of both the pixel opening and the light-transmitting opening onto the substrate 10 are circular. In such... Figures 15 to 18 In the embodiment shown, the orthographic projections of the pixel opening and the light-transmitting opening onto the substrate 10 are both rhomboid.

[0124] In this embodiment, the shape of the light-transmitting opening, the first optical functional layer 101, the second optical functional layer 102, whether the first optical functional part 111 in the first optical functional layer 101 is connected as a continuous film layer, the thickness of the optical functional layer 100, and other parameters can all be selected according to the actual situation, which can meet the needs of the first display area AA1 in the display substrate for the light-shielding effect in various situations.

[0125] In addition, along Figure 15 The cross-sectional structure diagram of the display substrate with cleaving line BC shown is similar to... Figure 5 The cross-sectional structural diagrams shown are the same or similar. Along Figure 16 The cross-sectional structure diagram of the display substrate with cleaving line BC shown is similar to... Figure 8 The cross-sectional structural diagrams shown are the same or similar. Along Figure 17 The cross-sectional structure diagram of the display substrate with cleaving line BC shown is similar to... Figure 10 The cross-sectional structural diagrams shown are the same or similar. Along Figure 18 The cross-sectional structure diagram of the display substrate with cleaving line BC shown is similar to... Figure 12 The cross-sectional structural diagrams shown are the same or similar. Along Figure 15 , Figure 16 , Figure 17 , Figure 18 The cross-sectional structure diagram of the display substrate cut by the dicing line DE is shown. Figure 6 The cross-sectional structural diagrams shown are the same or similar. Further details regarding the embodiments disclosed herein will not be repeated.

[0126] This disclosure also provides a display device, including a display substrate as described in any embodiment of this disclosure.

[0127] The display device in this disclosure can include any device or product with display functionality. For example, the display device can be a smartphone, mobile phone, e-book reader, desktop computer (PC), laptop PC, netbook PC, personal digital assistant (PDA), portable multimedia player (PMP), digital audio player, mobile medical device, camera, wearable device (e.g., head-mounted device, electronic clothing, electronic bracelet, electronic necklace, electronic accessory, electronic tattoo, or smartwatch), television set, etc.

[0128] In summary, in the display substrate and display device of this disclosure, the use of optical functional layers arranged in different regions for light absorption or light blocking can improve the abnormal reflectivity caused by BM taper peeling and improve problems such as poor bright and dark stripes.

[0129] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of this disclosure, and this disclosure is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of this disclosure, and these modifications and improvements are also considered to be within the scope of protection of this disclosure.

Claims

1. A display substrate having a first display area and a second display area, wherein, The display substrate includes: Substrate; A pixel defining layer is located on one side of the substrate, and the pixel defining layer has multiple pixel openings at positions corresponding to the first display area and positions corresponding to the second display area; A light-shielding layer is located on the side of the pixel defining layer away from the substrate and has multiple light-transmitting openings, each of which corresponds to a pixel opening; the light-shielding layer has a first surface facing the substrate; Multiple color filters are provided, at least a portion of which are located in the light-transmitting aperture, and include a first portion located on the side of the extension surface of the first surface away from the substrate, and the orthographic projection of the first portion on the substrate is located within the orthographic projection range of the pixel opening on the substrate; multiple color filters of various colors are provided in both the first display area and the second display area, and the light-transmitting aperture corresponding to the same color filter includes a first light-transmitting aperture located in the first display area and a second light-transmitting aperture located in the second display area, and the light-transmitting area of ​​the first light-transmitting aperture is larger than the light-transmitting area of ​​the second light-transmitting aperture; At least one optical functional layer is provided, the optical functional layer is located in the first display area and is disposed on the side of the pixel limiting layer away from the substrate, the orthographic projection of the optical functional layer on the substrate partially overlaps with the orthographic projection of the first light-transmitting opening on the substrate, and the orthographic projection of the pixel opening around the first display area on the substrate is also provided; the light transmittance of the optical functional layer is less than the transmittance of the first portion.

2. The display substrate according to claim 1, wherein, The at least one optical functional layer includes a first optical functional layer, which includes a plurality of optical functional parts, each of which corresponds to at least one color filter part and is connected to the corresponding color filter part to form an integral structure.

3. The display substrate according to claim 2, wherein, The thickness of the optical functional part is greater than the thickness of the first part of the color filter part.

4. The display substrate according to claim 3, wherein, The thickness difference between the optical functional part and the first part is between 1 and 3 micrometers.

5. The display substrate according to claim 2, wherein, The optical functional units correspond one-to-one with the first light-transmitting openings in the first display area and are in a ring structure; the orthographic projections of different optical functional units on the substrate are spaced apart from each other.

6. The display substrate according to claim 5, wherein, The surface width of the optical functional part away from the substrate is not less than 3 micrometers.

7. The display substrate according to claim 2, wherein, In the first display area, the light-transmitting port corresponds one-to-one with the color filter, wherein multiple color filters of one color are connected to form a first continuous film layer, and the orthographic projections of the remaining color filters on the substrate are spaced apart from each other. The first optical functional layer includes a plurality of optical functional parts: a first optical functional part and a plurality of second optical functional parts, wherein the first optical functional part is a continuous film layer and is connected to the first continuous film layer as an integral structure; Each of the second optical functional units corresponds to one of the color filter units outside the first continuous film layer, and has a ring structure.

8. The display substrate according to claim 7, wherein, The orthographic projection of the first optical functional part on the substrate has a first edge facing the second display area, and the first edge is a wavy edge.

9. The display substrate according to claim 8, wherein, The first optical functional unit has a first bottom surface facing the substrate, a first top surface away from the substrate, and a side surface connected between the first bottom surface and the first top surface and facing the second display area. The angle between the side surface of the first optical functional unit and the first bottom surface is an acute angle.

10. The display substrate according to claim 7, wherein, The surface width of the second optical functional part away from the substrate is not less than 3 micrometers.

11. The display substrate according to claim 2, wherein, The display substrate further includes a receiving structure layer located between the pixel defining layer and the light-shielding layer. The receiving structure layer has a plurality of receiving slots. The orthographic projection of the receiving slots on the substrate is located within the orthographic projection range of the light-transmitting opening on the substrate, and overlaps with the orthographic projection of the pixel opening on the substrate. The color filter section also includes a second part located in the receiving groove; The receiving groove has a bottom opening facing the substrate, and the minimum distance between the orthographic projection of the bottom opening on the substrate and the orthographic projection of the first optical functional layer on the substrate is 0 to 2 μm.

12. The display substrate according to claim 2, wherein, The first optical functional layer has a first bottom surface facing the substrate, a first top surface away from the substrate, and a first side surface connected between the first bottom surface and the first top surface and facing the central axis of the light-transmitting port. The angle between the first side surface and the first bottom surface is between 25° and 55°.

13. The display substrate according to claim 1, wherein, The at least one optical functional layer includes a second optical functional layer, which is made of a light-shielding material and is connected to the pixel defining layer as an integral structure.

14. The display substrate according to claim 13, wherein, The second optical functional layer includes a plurality of annular light-shielding portions, each corresponding to a pixel opening in the first display area, and the surface width of the annular light-shielding portion away from the substrate is between 3 and 5 micrometers.

15. The display substrate according to claim 13, wherein, The thickness of the second optical functional layer is between 0.5 and 1.5 micrometers.

16. The display substrate according to claim 13, wherein, The second optical functional layer has a second bottom surface facing the substrate, a second top surface facing away from the substrate, and a second side surface connected between the second bottom surface and the second top surface and facing the pixel opening; The angle between the second side surface and the second bottom surface is between 25° and 55°.

17. A display device, wherein, The display substrate includes any one of claims 1 to 16.

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