Display substrate and display apparatus

Abstract

Provided in the present disclosure are a display substrate and a display apparatus. The display substrate comprises a base, anti-peep sub-pixels, a first light-shielding layer and a second light-shielding layer, wherein the anti-peep sub-pixels are located on one side of the base; the first light-shielding layer is located on the side of the anti-peep sub-pixels facing away from the base; the first light-shielding layer is provided with a plurality of first openings corresponding to each anti-peep sub-pixel; the second light-shielding layer is located on the side of the first light-shielding layer facing away from the anti-peep sub-pixels; the second light-shielding layer comprises first light-shielding structures, and the orthographic projection of each first light-shielding structure on the base is located between the orthographic projections, on the base, of first openings adjacent thereto; and the second light-shielding layer is made of a metal material. An improvement in both the anti-peep effect and display effect is facilitated.

Description

Display substrate and display device

[0001] Cross Reference to Related Applications

[0002] This application claims priority to the Chinese Patent Application No. 202411331790.1, filed on September 23, 2024, and entitled "Display substrate and display device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of display, and in particular, to a display substrate and a display device. BACKGROUND

[0004] With the development of display technology, display screens are increasingly widely used. When users use electronic products such as mobile phones with display screens to view private information, they usually do not want to expose private information to others, so display screens with anti-peeping functions are increasingly favored by users. It has become a problem to be solved to develop display products that have good anti-peeping effects and good display effects at the same time. SUMMARY

[0005] The present disclosure provides a display substrate and a display device to improve the anti-peeping effect and the display effect.

[0006] In a first aspect, the present disclosure provides a display substrate, comprising:

[0007] a substrate;

[0008] an anti-peeping sub-pixel located on one side of the substrate;

[0009] a first light-shielding layer located on a side of the first light-shielding layer away from the anti-peeping sub-pixel; the first light-shielding layer is provided with a plurality of first openings corresponding to each anti-peeping sub-pixel;

[0010] a second light-shielding layer located on a side of the second light-shielding layer away from the anti-peeping sub-pixel; the second light-shielding layer comprises a first light-shielding structure, and a normal projection of the first light-shielding structure on the substrate is located between normal projections of adjacent first openings on the substrate;

[0011] The material of the second light-shielding layer is a metal material.

[0012] In some embodiments, the width of the normal projection of the first light-shielding structure on the substrate at the narrowest position is less than or equal to 5 μm.

[0013] In some embodiments, the longitudinal distance between the first light-shielding layer and the second light-shielding layer is 3 μm to 10 μm.

[0014] The longitudinal distance between the first light-shielding layer and the anti-peeping sub-pixel is 3 μm to 8 μm.

[0015] In some embodiments, the first light-shielding structure has a width at a narrowest position of a normal projection of the first light-shielding structure on the substrate that is greater than or equal to 2 μm.

[0016] In some embodiments, the second light-shielding layer further comprises a second light-shielding structure; the second light-shielding structure defines a first patterned region, the first light-shielding structure is located within the first patterned region, and is connected to the second light-shielding structure.

[0017] The first light-shielding structure and the second light-shielding structure define a plurality of second openings; the second openings correspond one-to-one to the first openings, and a normal projection of the first openings on the substrate is located within a normal projection of the second openings on the substrate.

[0018] In some embodiments, the display substrate further comprises:

[0019] A light-concentrating layer located on a side of the second light-shielding layer facing away from the substrate; the light-concentrating layer comprises a plurality of first light-concentrating structures; the first light-concentrating structures correspond one-to-one to the first openings, and a normal projection of the first openings on the substrate is located within a normal projection of the first light-concentrating structures on the substrate.

[0020] In some embodiments, a normal projection of the first light-shielding structure on the substrate is in contact with or partially overlaps with a normal projection of the first light-concentrating structure on the substrate.

[0021] In some embodiments, the first light-concentrating structure is a convex lens.

[0022] In some embodiments, the display substrate further comprises:

[0023] A shared sub-pixel; the shared sub-pixel is located in the same layer as the privacy sub-pixel.

[0024] The first light-shielding layer further has a fourth opening corresponding to each shared sub-pixel;

[0025] The light-concentrating layer further comprises a second light-concentrating structure; the second light-concentrating structure corresponds one-to-one to the fourth openings, and a normal projection of the fourth openings on the substrate is located within a normal projection of the second light-concentrating structures on the substrate.

[0026] The second light-concentrating structure is a convex lens.

[0027] In some embodiments, the display substrate further comprises:

[0028] A pixel definition layer located between the substrate and the first light-shielding layer.

[0029] The pixel definition layer comprises a plurality of second patterned regions, and each second patterned region comprises a plurality of first pixel openings; the first pixel openings correspond one-to-one to the first openings.

[0030] The privacy sub-pixel corresponds to the second patterned area one-to-one, and the privacy sub-pixel includes a plurality of light-emitting parts, which are arranged in the first pixel opening in the corresponding second patterned area.

[0031] In some embodiments, the first pixel openings in the same second patterned area are of the same size.

[0032] In some embodiments, the display substrate further comprises:

[0033] The driving circuit layer is located between the substrate and the pixel definition layer.

[0034] The driving circuit layer includes a first electrode; the privacy sub-pixel is connected to the first electrode one-to-one; and the orthographic projection of the second patterned area on the substrate is located within the orthographic projection of the corresponding first electrode on the substrate.

[0035] In some embodiments, the display substrate further comprises: a shared sub-pixel.

[0036] The pixel definition layer further has a second pixel opening; and the shared sub-pixel is arranged in the second pixel opening one-to-one.

[0037] The driving circuit layer further includes a second electrode; the shared sub-pixel is connected to the second electrode one-to-one; and the orthographic projection of the second pixel opening on the substrate is located within the orthographic projection of the corresponding second electrode on the substrate.

[0038] In some embodiments, the driving circuit layer includes a plurality of pixel circuits; one first electrode corresponds to one second electrode, and the first electrode and the corresponding second electrode are connected to the same pixel circuit.

[0039] In some embodiments, the display substrate further comprises:

[0040] The touch layer is located on the side away from the substrate and the first light-shielding layer; the touch layer includes at least one touch metal layer, and one of the touch metal layers is multiplexed as the second light-shielding layer.

[0041] In some embodiments, the touch layer includes a first touch metal layer and a second touch metal layer; the first touch metal layer includes a bridge electrode, the second touch metal layer includes a first touch electrode and a second touch electrode, the extension direction of the first touch electrode and the extension direction of the second touch electrode intersect each other, the first touch electrode is directly connected through the second touch metal layer at the intersection position, and the second touch electrode is connected through the bridge electrode at the intersection position.

[0042] The first touch metal layer is multiplexed as the second light-shielding layer.

[0043] In some embodiments, the material of the first light-shielding layer is a metal material; and the first light-shielding layer is electrically connected to a constant voltage line.

[0044] In some embodiments, the display substrate further comprises:

[0045] a touch layer located on a side of the second light shielding layer away from the substrate;

[0046] The second light shielding layer is electrically connected to the constant voltage line.

[0047] In some embodiments, the display substrate further comprises:

[0048] a touch layer located between the second light shielding layer and the substrate; the touch layer comprises at least one touch metal layer, and one of the touch metal layers is multiplexed as the first light shielding layer.

[0049] In some embodiments, the display substrate further comprises:

[0050] a third light shielding layer; the third light shielding layer is located on a side of the second light shielding layer away from the substrate; the third light shielding layer is provided with a third opening; the third opening corresponds to one of the anti-peep sub-pixels, and the orthographic projection of the plurality of first openings corresponding to the same anti-peep sub-pixel on the substrate is located within the orthographic projection of the third opening on the substrate;

[0051] The orthographic projection of the first light shielding structure on the substrate is in contact with or at least partially overlaps with the orthographic projection of the third light shielding layer on the substrate.

[0052] In some embodiments, the display substrate further comprises:

[0053] a light filtering layer; the light filtering layer comprises a plurality of light filtering portions; the light filtering portions are arranged in the third openings.

[0054] A second aspect of the present disclosure provides a display device comprising the display substrate of any one of the above.

[0055] The present disclosure has the following advantages:

[0056] The present disclosure provides a display substrate and a display device. The display substrate comprises a substrate, an anti-peep sub-pixel, a first light shielding layer, and a second light shielding layer. The anti-peep sub-pixel is located on a side of the substrate; the first light shielding layer is located on a side of the anti-peep sub-pixel away from the substrate; the first light shielding layer is provided with a plurality of first openings corresponding to each anti-peep sub-pixel; the second light shielding layer is located on a side of the first light shielding layer away from the anti-peep sub-pixel; the second light shielding layer comprises a first light shielding structure, and the orthographic projection of the first light shielding structure on the substrate is located between the orthographic projections of adjacent first openings on the substrate; and the material of the second light shielding layer is a metal material. The plurality of first openings of the first light shielding layer divides a plurality of light emitting areas, and the light rays emitted by the adjacent first openings are shielded by the first light shielding structure, so as to reduce the angle of the emitted light rays and improve the anti-peep effect. Meanwhile, the first light shielding structure is made of metal and can have a small width, thereby ensuring the anti-peep effect and improving the aperture ratio of the display substrate and the display effect. BRIEF DESCRIPTION OF DRAWINGS

[0057] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required to be used in the embodiments of the present disclosure will be briefly introduced as follows. Obviously, the drawings to be introduced below are only some of the embodiments of the present disclosure, and other drawings can also be obtained by those of ordinary skill in the art without any creative effort on the basis of these drawings.

[0058] FIG. 1 is a schematic view of a cross-sectional structure of a display substrate according to an embodiment of the present disclosure;

[0059] FIG. 2 is a schematic view of a top view structure of a display substrate according to an embodiment of the present disclosure;

[0060] FIG. 3 is a schematic view of a cross-sectional structure of a display substrate according to another embodiment of the present disclosure;

[0061] FIG. 4 is a schematic view of a top view structure of a display substrate according to another embodiment of the present disclosure;

[0062] FIG. 5 is a schematic view of a cross-sectional structure of a display substrate according to another embodiment of the present disclosure;

[0063] FIG. 6 is a schematic view of a top view structure of a display substrate according to another embodiment of the present disclosure;

[0064] FIG. 7 is a schematic view of a cross-sectional structure of a display substrate according to another embodiment of the present disclosure;

[0065] FIG. 8 is a schematic view of a cross-sectional structure of a display substrate according to another embodiment of the present disclosure;

[0066] FIG. 9 is a schematic view of a cross-sectional structure of a display substrate according to another embodiment of the present disclosure;

[0067] FIG. 10 is a schematic view of a cross-sectional structure of a display substrate according to another embodiment of the present disclosure;

[0068] FIG. 11 is a schematic view of a cross-sectional structure of a display substrate according to another embodiment of the present disclosure;

[0069] FIG. 12 is a schematic view of a cross-sectional structure of a display substrate according to another embodiment of the present disclosure;

[0070] FIG. 13 is a schematic view of a cross-sectional structure of a display substrate according to another embodiment of the present disclosure;

[0071] FIG. 14 is a schematic view of a pixel circuit of a display substrate according to an embodiment of the present disclosure;

[0072] FIG. 15 is a schematic view of a pixel circuit of a display substrate according to another embodiment of the present disclosure;

[0073] FIG. 16 is a schematic view of a cross-sectional structure of a display substrate according to another embodiment of the present disclosure;

[0074] FIG. 17 is a schematic view of a cross-sectional structure of a display substrate according to an embodiment of the present disclosure;

[0075] FIG. 18 is a schematic view of a cross-sectional structure of a display substrate according to an embodiment of the present disclosure;

[0076] FIG. 19 is a schematic view of a cross-sectional structure of a display substrate according to an embodiment of the present disclosure;

[0077] FIG. 20 is a schematic view of a manufacturing process of a display substrate according to an embodiment of the present disclosure;

[0078] FIG. 21 is a schematic view of a manufacturing process of a display substrate according to an embodiment of the present disclosure;

[0079] FIG. 22 is a schematic view of a manufacturing process of a display substrate according to an embodiment of the present disclosure;

[0080] FIG. 23 is a schematic view of a manufacturing process of a display substrate according to an embodiment of the present disclosure;

[0081] FIG. 24 is a schematic view of a manufacturing process of a display substrate according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0082] In order to make the above objectives, features and advantages of the present disclosure more obvious and easy to understand, the present disclosure will be further described below in conjunction with the drawings and embodiments. However, the example embodiments can be implemented in various forms, and should not be understood as being limited to the embodiments set forth herein; on the contrary, these embodiments are provided to make the present disclosure more comprehensive and complete, and to fully convey the ideas of the example embodiments to those skilled in the art. The same reference signs in the drawings represent the same or similar structures, and thus repeated descriptions thereof will be omitted. The expressions of position and direction described in the present disclosure are described with reference to the drawings, but changes can be made as needed, and the changes are included in the protection scope of the present disclosure. The drawings of the present disclosure are only used to illustrate the relative positional relationship and do not represent the true proportions.

[0083] With the development of display technology, display screens are increasingly widely used. When a user uses an electronic product such as a mobile phone with a display screen to view private information, the user usually does not want to expose the private information to others, and thus display screens with a privacy protection function are increasingly favored by users. It has become a problem to be solved to develop display products that have good privacy protection effects and good display effects.

[0084] FIG. 1 is a schematic view of a cross-sectional structure of a display substrate according to an embodiment of the present disclosure; and FIG. 2 is a schematic view of a top structure of a display substrate according to an embodiment of the present disclosure.

[0085] In some embodiments, as shown in FIG. 1 and FIG. 2, where FIG. 1 can be regarded as a sectional view of FIG. 2 along sectional line A-A, the display substrate includes a substrate 11, a privacy sub-pixel 121, a first light-shielding layer 13, and a second light-shielding layer 14.

[0086] The substrate 11 is located at the bottom of the display substrate and is used to support and carry other film layers located thereon. The shape and size of the substrate 11 are adapted to the shape and size of the display substrate. Generally, the shape of the substrate 11 can be square, rectangular, etc., and when applied to a special-shaped display, the shape of the substrate 11 can also be a special shape such as a circle, etc., which is not limited herein. The material of the substrate 11 can be a rigid material such as glass, etc. to make a rigid display substrate. The material of the substrate 11 can also be a flexible material such as polyimide (PI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), etc. to make a flexible display substrate. The flexible substrate 11 can be a single-layer structure or a multi-layer structure. When the substrate 11 adopts a multi-layer structure, a laminated structure of organic film layers and inorganic film layers arranged alternately can be adopted, wherein the inorganic film layers are located between adjacent organic film layers and can play a buffering role. The inorganic film layers can adopt a single material or a composite material such as silicon nitride (SiN x ), silicon oxide (SiO x ), etc., which is not limited herein.

[0087] The privacy sub-pixel 121 is located on one side of the substrate 11. The privacy sub-pixel 121 is used to emit light for image display in a privacy mode. In specific implementation, the display substrate can include a plurality of privacy sub-pixels 121. The more the number of the privacy sub-pixels 121, the more delicate the display image in the image display in the privacy mode. The plurality of privacy sub-pixels 121 can include red, green, and blue privacy sub-pixels for emitting red, green, and blue light respectively, so as to realize color display. The plurality of privacy sub-pixels 121 can also be used to emit light of the same color, so as to be used for displaying a monochrome image, which is not limited herein.

[0088] The first light-shielding layer 13 is located on the side of the privacy sub-pixel 121 away from the substrate 11. The first light-shielding layer 13 is provided with a plurality of first openings K1 corresponding to each privacy sub-pixel 121. For example, as shown in FIG. 2, the first light-shielding layer 13 is provided with 4 first openings K1 corresponding to one privacy sub-pixel. In specific implementation, the first light-shielding layer 13 can be provided with a number of first openings K1 corresponding to one privacy sub-pixel, which is not limited herein.

[0089] The first light shielding layer 13 is provided with a plurality of first openings K1 corresponding to each of the privacy sub-pixels 121. Specifically, for each privacy sub-pixel 121, the first light shielding layer 13 is provided with a plurality of first openings K1 corresponding thereto, and the orthographic projection of each first opening K1 on the substrate 11 at least partially overlaps with the orthographic projection of the corresponding privacy sub-pixel 121 on the substrate. In specific implementation, the orthographic projection of each first opening K1 on the substrate 11 can fall within the orthographic projection of the corresponding privacy sub-pixel on the substrate 11, which is not limited herein. The first opening K1 is used for transmitting the light emitted by the corresponding privacy sub-pixel 121. When one privacy sub-pixel 121 corresponds to a plurality of first openings K1, the light emitted by the privacy sub-pixel 121 is emitted through the plurality of first openings K1 corresponding thereto, respectively. Since the opening size of the first opening K1 is small, the emission angle of the privacy sub-pixel 121 when emitting light from a single first opening K1 can be limited to a small range, thereby greatly reducing the proportion of large-angle light and optimizing the privacy effect.

[0090] The size of the plurality of first openings K2 provided by the first light shielding layer 13 corresponding to the same privacy sub-pixel can be the same, thereby improving the uniformity of the emitted light. The size of the first openings K1 provided by the first light shielding layer 13 corresponding to different privacy sub-pixels can also be the same, thereby improving the uniformity of the emitted light. This is not limited herein.

[0091] The number of first openings K1 corresponding to privacy sub-pixels of different colors can be the same or different, which can be set according to actual conditions in specific implementation, and is not limited herein. For example, in some embodiments, the orthographic projection area of a blue privacy sub-pixel on the substrate 11 is greater than the orthographic projection area of a red privacy sub-pixel on the substrate 11, and the orthographic projection area of the red privacy sub-pixel on the substrate 11 is greater than the orthographic projection area of a green privacy sub-pixel on the substrate 11. Therefore, when the first openings K1 are provided on the first light shielding layer 13, the number of first openings K1 corresponding to the same blue privacy sub-pixel is greater than the number of first openings K1 corresponding to the same red privacy sub-pixel, and the number of first openings K1 corresponding to the same red privacy sub-pixel is greater than the number of first openings K1 corresponding to the same green privacy sub-pixel.

[0092] In some embodiments, as shown in FIG. 2, the orthographic projection of the first opening K1 on the substrate 11 can be circular. In some embodiments, the orthographic projection of the first opening K1 on the substrate 11 can also be other shapes, such as square, rectangular, diamond, elliptical, etc., which are not limited herein.

[0093] The second light shielding layer 14 is located on the side of the first light shielding layer 13 away from the substrate 11. The second light shielding layer 14 comprises a first light shielding structure 141. The orthographic projection of the first light shielding structure 141 on the substrate 11 is located between the orthographic projections of adjacent first openings K1 on the substrate 11. The first light shielding structure 141 can further shield the large-angle light rays emitted through the first openings K1, and prevent crosstalk between the light rays emitted by different first openings K1, thereby further improving the privacy effect.

[0094] Meanwhile, due to the further shielding of the light rays emitted by the first openings K1 by the first light shielding structure 141, the aperture ratio of the display substrate is affected. The greater the width of the first light shielding structure 141, the smaller the aperture ratio of the display substrate, and the greater the impact on the display effect of the display substrate. Therefore, when manufacturing the first light shielding structure 141, it is necessary to reduce the width of the first light shielding structure 141 as much as possible, for example, the width of the first light shielding structure 141 is much smaller than the width of the first light shielding layer 13 located between two first openings K1, so as to improve the aperture ratio of the display substrate and improve the display effect.

[0095] In specific implementation, the first light shielding structure 141 can be made of a metal material. Compared with the organic material commonly used to manufacture the black matrix, the metal material has more accurate etching precision in the etching process, and can realize smaller line width compared with the organic material, thereby facilitating the reduction of the width of the first light shielding structure 141. In specific implementation, by using metal to manufacture the first light shielding structure 141, the width of the first light shielding structure 141 at the widest position of the orthographic projection of the first light shielding structure 141 on the substrate 11 can be less than or equal to a set value. The set value can be adjusted based on the specific structure of the display substrate, taking into account the privacy function and aperture ratio of the display substrate, so that the privacy effect and display effect of the display substrate can both reach a better state.

[0096] In some embodiments, the width of the first light shielding structure 141 at the widest position of the orthographic projection of the first light shielding structure 141 on the substrate 11 can be less than or equal to 5 μm. According to a large number of experiments of the researchers of the present disclosure, when the width of the first light shielding structure 141 at the widest position of the orthographic projection of the first light shielding structure 141 on the substrate 11 is less than or equal to 5 μm, the aperture ratio of the display substrate is greatly improved, the display effect of the display substrate is obviously improved, and the display substrate still has a good privacy effect. For example, for a display substrate in which the longitudinal distance h1 between the first light shielding layer 13 and the second light shielding layer 14 is 3 μm to 10 μm, and the longitudinal distance h2 between the first light shielding layer 13 and the privacy sub-pixel 121 is 3 μm to 8 μm, when the width of the first light shielding structure 141 at the widest position of the orthographic projection of the first light shielding structure 141 on the substrate 11 is less than or equal to 5 μm, the display effect is obviously improved, and the privacy effect is good. When the width of the first light shielding structure 141 at the widest position of the orthographic projection of the first light shielding structure 141 on the substrate 11 is 3 μm, the privacy effect and the display effect can reach a comprehensive optimal state.

[0097] In some embodiments, the width of the first light shielding structure 141 at the narrowest position of the orthographic projection of the first light shielding structure 141 on the substrate 11 can be greater than or equal to 2 μm. According to a large number of experiments of the researchers of the present disclosure, when the width of the first light shielding structure 141 at the narrowest position of the orthographic projection of the first light shielding structure 141 on the substrate 11 is less than 2 μm, the privacy effect is obviously decreased, and thus the width of the first light shielding structure 141 at the narrowest position of the orthographic projection of the first light shielding structure 141 on the substrate 11 is greater than or equal to 2 μm, which is beneficial to ensuring the privacy effect of the display substrate.

[0098] In some embodiments, as shown in FIG. 2, the orthographic projection of the first openings K1 on the substrate 11 is arranged in an array, the number of the first openings K1 in each of two adjacent rows and two adjacent columns is 4, the width of the first light shielding structure 141 at the widest position of the orthographic projection of the first light shielding structure 141 on the substrate 11 is generally the width w2 of the first light shielding structure 141 between two adjacent first openings K1 measured along the diagonal direction of the array, and the width of the first light shielding structure 141 at the narrowest position of the orthographic projection of the first light shielding structure 141 on the substrate 11 is generally the width w1 of the first light shielding structure 141 between two adjacent first openings K1 measured along the row direction or the column direction of the array. In specific implementation, according to the specific structure of the first light shielding structure 141, the widest position and the narrowest position of the orthographic projection of the first light shielding structure 141 on the substrate 11 can also be at other positions, or the width of the first light shielding structure 141 at the widest position and the narrowest position of the orthographic projection of the first light shielding structure 141 on the substrate 11 can also be the same, which is not limited herein.

[0099] FIG. 3 is a schematic view of a cross-sectional structure of a display substrate according to an embodiment of the present disclosure; and FIG. 4 is a schematic view of a top structure of a display substrate according to an embodiment of the present disclosure.

[0100] In some embodiments, as shown in FIG. 3 and FIG. 4, which can be regarded as a sectional view of FIG. 3 along the sectional line B-B, the second light shielding layer 14 further comprises second light shielding structures 142 (as shown in FIG. 4, the second light shielding layer 14 inside the dashed line is the first light shielding structure 141, and the second light shielding layer 14 outside the dashed line is the second light shielding structure 142). The second light shielding structure 142 defines a first patterned area P1 (as shown in FIG. 4, the area inside the dashed line), the first light shielding structure 141 is located within the first patterned area P1, and the first light shielding structure 141 and the second light shielding structure 142 are connected together. As shown in FIG. 3 and FIG. 4, the first light shielding structure 141 and the second light shielding structure 142 together define a plurality of second openings K2. The second openings K2 correspond one-to-one to the first openings K1, and the orthographic projection of the first openings K1 on the substrate 11 is located within the orthographic projection of the second openings K2 on the substrate 11. The second openings K2 are used to transmit light rays emitted through the first openings K1, while the second light shielding structure 142 can shield large-angle light rays emitted through the first openings K1 and emitted outside the first patterned area P1, thereby ensuring the privacy effect of the display substrate. The orthographic projection of the second openings K2 on the substrate 11 is larger than the orthographic projection of the first openings K1 on the substrate 11, thereby ensuring the aperture ratio of the display substrate.

[0101] FIG. 5 is a schematic view of a cross-sectional structure of a display substrate according to an embodiment of the present disclosure; and FIG. 6 is a schematic view of a top structure of a display substrate according to an embodiment of the present disclosure.

[0102] In some embodiments, as shown in FIG. 5 and FIG. 6, the display substrate further comprises a third light shielding layer 15. The third light shielding layer 15 is located on the side of the second light shielding layer 14 away from the substrate 11. The third light shielding layer 15 is provided with third openings K3. The third openings K3 correspond one-to-one to the privacy sub-pixels 121, and the orthographic projection of a plurality of first openings K1 corresponding to the same privacy sub-pixel 121 on the substrate 11 is located within the orthographic projection of the corresponding third opening K3 on the substrate 11. The third light shielding layer 15 can be made of a black matrix material commonly used in the art, such as a black light-absorbing material including carbon black, without limitation.

[0103] In some embodiments, as shown in FIG. 5, the second light shielding layer 14 is not provided with the second light shielding structure 142 around the first light shielding structure 141, the third openings K3 can transmit light rays emitted through the first openings K1, and the third light shielding layer 15 can shield large-angle light rays, thereby achieving the same or similar privacy effect as the second light shielding structure 142. In specific implementation, as shown in FIG. 5, the orthographic projection of the first light shielding structure 141 on the substrate 11 can be in contact with or at least partially overlap with the orthographic projection of the third light shielding layer 15 on the substrate, thereby avoiding light leakage between the orthographic projection of the first light shielding structure 141 on the substrate 11 and the orthographic projection of the third light shielding layer 15 on the substrate 11.

[0104] In some embodiments, as shown in FIG. 5, a first buffer layer is further arranged between the second light shielding layer 14 and the third light shielding layer 15. The first buffer layer can play a buffering role. For example, when the third light shielding layer 15 is etched to form the third opening K3, the first buffer layer can protect the second light shielding layer 14 from being etched.

[0105] FIG. 7 is a schematic diagram of a cross-sectional structure of a display substrate according to an embodiment of the present disclosure.

[0106] In some embodiments, as shown in FIG. 7, the second light shielding layer 14 is provided with a second light shielding structure 142 around the first light shielding structure 141. The orthographic projection of the second light shielding structure 142 on the substrate 11 can be arranged to fall within the orthographic projection of the third light shielding layer 15 on the substrate 11. The third light shielding layer 15 can shield the second light shielding structure 142 from reflecting light incident from the outside of the display substrate, thereby improving the display effect.

[0107] FIG. 8 is a schematic diagram of a cross-sectional structure of a display substrate according to an embodiment of the present disclosure.

[0108] In some embodiments, as shown in FIG. 8, the display substrate further includes a filter layer 16. The filter layer 16 includes a plurality of filter portions 161. The filter portions 161 are arranged in the third openings K3. The filter portions 161 are configured to transmit light of the same color as the corresponding privacy sub-pixel 121 of the third opening K3. For example, the display substrate includes blue privacy sub-pixels, red privacy sub-pixels, and green privacy sub-pixels. The plurality of filter portions 161 correspondingly include blue filter portions, red filter portions, and green filter portions. The blue filter portions are arranged in the third openings K3 corresponding to the blue privacy sub-pixels and are configured to transmit blue light and filter out light other than blue light. The red filter portions are arranged in the third openings K3 corresponding to the red privacy sub-pixels and are configured to transmit red light and filter out light other than red light. The green filter portions are arranged in the third openings K3 corresponding to the green privacy sub-pixels and are configured to transmit green light and filter out light other than green light. By arranging the filter layer 16 to filter out stray light, the purity of the colors can be improved. Moreover, the filter layer 16 can reduce the adverse effects of the reflection of ambient light by the light reflection film layer inside the display substrate on the display image, thereby improving the display effect of the display substrate in an outdoor strong light environment. Compared with the related art, which reduces the reflection of ambient light by arranging a polarizer, the present disclosure reduces the thickness of the display substrate by arranging the filter layer, thereby meeting the demand for thinness.

[0109] FIG. 9 is a schematic diagram of a cross-sectional structure of a display substrate according to an embodiment of the present disclosure.

[0110] In some embodiments, as shown in FIG. 9, the display substrate further comprises a light condensing layer 17. The light condensing layer 17 is located on the side of the second light shielding layer 14 away from the substrate 11. Specifically, the light condensing layer 17 can be arranged on the side of the third light shielding layer away from the substrate 11.

[0111] The light condensing layer 17 comprises a plurality of first light condensing structures 171. The first light condensing structures 171 correspond to the first openings K1 one by one. The orthographic projection of the first openings K1 on the substrate 11 is within the orthographic projection of the corresponding first light condensing structures 171 on the substrate 11, so as to ensure that the light rays emitted through the first openings K1 can be totally or mostly incident into the corresponding first light condensing structures 171, improving the light utilization rate. The first light condensing structures 171 have the function of converging light rays, which can adjust large-angle light rays (the angle relative to the vertical direction is larger) into small-angle light rays (the angle relative to the vertical direction is smaller), so as to be beneficial to further improve the privacy effect of the display substrate, and be beneficial to improve the picture brightness when viewing the display substrate directly, and optimize the display effect.

[0112] In specific implementation, the first light condensing structures 171 can be convex lenses or other lenses with the same or similar functions, which are not limited here.

[0113] The shape of the first light condensing structures 171 is adapted to the shape of the first openings K1. For example, when the orthographic projection shape of the first openings K1 on the substrate 11 is circular, the orthographic projection of the first light condensing structures 171 on the substrate 11 can also be circular, and correspondingly, the solid shape of the first light condensing structures 171 can be part of a spherical shape, for example, the solid shape of the first light condensing structures 171 can be hemispherical. When the orthographic projection shape of the first openings K1 on the substrate 11 is other shapes, for example, square, the orthographic projection of the first light condensing structures 171 on the substrate 11 can be square, or the orthographic projection of the first light condensing structures 171 on the substrate 11 can also be circular or other shapes, as long as the orthographic projection of the first openings K1 on the substrate 11 falls within the orthographic projection of the corresponding first light condensing structures 171 on the substrate 11, which is not limited here.

[0114] In specific implementation, the height h3 of the first light-converging structure 171 can be set to be less than or equal to 6 μm. The aspect ratio of the first light-converging structure 171 can be set to be 0.3-0.7. The aspect ratio of the first light-converging structure 171 can specifically refer to the ratio of the height h3 of the first light-converging structure 171 to the maximum dimension w3 of the orthographic projection of the first light-converging structure 171 on the substrate 11. For example, the orthographic projection of the first light-converging structure 171 on the substrate 11 is circular, and the maximum dimension of the orthographic projection of the first light-converging structure 171 on the substrate 11 can be the diameter of the circle. For another example, the orthographic projection of the first light-converging structure 171 on the substrate 11 is square, and the maximum dimension of the orthographic projection of the first light-converging structure 171 on the substrate 11 can be the diagonal of the square, which is not limited herein.

[0115] In some embodiments, as shown in FIG. 9, the orthographic projection of the first light-shielding structure 141 on the substrate 11 contacts or partially overlaps with the orthographic projection of the first light-converging structure 171 on the substrate 11, so that the light leakage caused by the light exiting from the gap between the orthographic projection of the first light-shielding structure 141 on the substrate 11 and the orthographic projection of the first light-converging structure 171 on the substrate 11 can be avoided, and the converging effect of the first light-converging structure 171 on the light can be improved.

[0116] In some embodiments, as shown in FIG. 9, the display substrate further includes a cover layer 18. The cover layer 18 is located on the side of the light-converging layer 17 away from the substrate 11. In specific implementation, the cover layer 18 covers the light-converging layer 17 and directly contacts the light-converging layer 17. The cover layer 18 can protect the light-converging layer 17 and can also play a role in planarization. In specific implementation, the refractive index of the cover layer 18 can be less than the refractive index of the light-converging layer 17, so as to reduce the total reflection of the light between the light-converging layer 17 and the cover layer 18 and improve the transmittance of the light. Specifically, the light-converging layer 17 can be made of a material with a refractive index greater than or equal to 1.6, and the cover layer 18 can be made of a material with a refractive index less than or equal to 1.5. The specific materials of the light-converging layer 17 and the cover layer 18 can be selected according to actual needs, which are not limited herein.

[0117] FIG. 10 is a schematic view of a cross-sectional structure of a display substrate according to an embodiment of the present disclosure.

[0118] In some embodiments, as shown in FIG. 10, the display substrate further comprises shared sub-pixels 122. Specifically, the display substrate can be divided into a privacy display mode and a shared display mode when displaying images. In the privacy display mode, only the privacy sub-pixels 121 emit light to display images. In the privacy display mode, the light exit angle of the display substrate is small, and the display panel has good privacy effect. In the shared display mode, only the shared sub-pixels 122 emit light to display images or the shared sub-pixels 122 and the privacy sub-pixels 121 emit light at the same time to display images. In the shared display mode, the light exit angle of the display substrate increases due to the emission of the shared sub-pixels 122, which can greatly improve the viewing angle of the display substrate, thereby realizing shared display.

[0119] In implementation, the shared sub-pixels 122 and the privacy sub-pixels 121 are located in the same layer. The first light shielding layer 13 further has fourth openings K4 corresponding to each shared sub-pixel. One fourth opening K4 corresponds to one shared sub-pixel 122, and the orthographic projection of the fourth opening K4 on the substrate 11 at least partially overlaps the orthographic projection of the corresponding shared sub-pixel 122 on the substrate 11. Specifically, the orthographic projection of the fourth opening K4 on the substrate 11 is located within the orthographic projection of the shared sub-pixel 122 on the substrate 11, or the orthographic projection of the shared sub-pixel 122 on the substrate 11 is located within the orthographic projection of the fourth opening K4 on the substrate 11, or the orthographic projection of the shared sub-pixel 122 on the substrate 11 completely overlaps the orthographic projection of the fourth opening K4 on the substrate 11, which is not limited herein.

[0120] In implementation, the third light shielding layer 15 further has an opening corresponding to the shared sub-pixel 122 for transmitting light emitted by the corresponding shared sub-pixel 122, and the orthographic projection of the opening on the substrate 11 at least partially overlaps the orthographic projection of the fourth opening K4 on the substrate 11. Specifically, the orthographic projection of the fourth opening K4 on the substrate 11 is located within the orthographic projection of the opening on the substrate 11, or the orthographic projection of the fourth opening K4 on the substrate 11 completely overlaps the orthographic projection of the opening on the substrate 11, which is not limited herein.

[0121] As shown in FIG. 10, the light collecting layer 17 further comprises second light collecting structures 172. The second light collecting structures 172 correspond to the fourth openings K4 one by one, and the orthographic projection of the fourth opening K4 on the substrate 11 is located within the orthographic projection of the second light collecting structure 172 on the substrate 11, so as to ensure that the light transmitted by the fourth opening K4 can be totally incident to the second light collecting structure 172, avoiding light leakage.

[0122] The shape of the second light-concentrating structure 172 is adapted to the shape of the fourth opening K4. For example, when the orthographic projection shape of the fourth opening K4 on the substrate 11 is circular, the orthographic projection of the second light-concentrating structure 172 on the substrate 11 can also be circular, and the three-dimensional shape of the first light-concentrating structure 171 can be hemispherical. When the orthographic projection shape of the fourth opening K1 on the substrate 11 is other shapes, such as a square, the orthographic projection of the second light-concentrating structure 172 on the substrate 11 can be a square, and the three-dimensional shape of the second light-concentrating structure 172 can be a part of a cylinder; or the orthographic projection of the second light-concentrating structure 172 on the substrate 11 can also be circular or other shapes, as long as the orthographic projection of the fourth opening K4 on the substrate 11 falls within the orthographic projection of the corresponding second light-concentrating structure 172 on the substrate 11, which is not limited herein.

[0123] In specific implementation, the second light-concentrating structure 172 can be a convex lens or other lenses with the same or similar functions, which is not limited herein.

[0124] FIG. 11 is a schematic view of a cross-sectional structure of a display substrate according to an embodiment of the present disclosure.

[0125] In some embodiments, the display substrate further includes a pixel definition layer 19. The pixel definition layer 19 is located between the substrate 11 and the first light-blocking layer 13. The pixel definition layer 19 includes a plurality of second patterned regions P2. One second patterned region P2 includes a plurality of first pixel openings PK1, and the first pixel openings PK1 correspond one-to-one to the first openings K1. The orthographic projection of the first pixel openings PK1 on the substrate 11 at least partially overlaps the orthographic projection of the corresponding first openings K1 on the substrate 11. For example, the orthographic projection of the first pixel openings PK1 on the substrate 11 is located within the orthographic projection of the corresponding first openings K1 on the substrate 11; or the orthographic projection of the first openings K1 on the substrate 11 is located within the orthographic projection of the first pixel openings PK1 on the substrate 11; or the orthographic projection of the first openings K1 on the substrate 11 completely overlaps the orthographic projection of the first pixel openings PK1 on the substrate 11, which is not limited herein.

[0126] In specific implementation, the anti-peep sub-pixel 121 corresponds one-to-one to the second patterned region P2. One anti-peep sub-pixel 121 includes a plurality of light-emitting parts 1211, and the light-emitting parts 1211 of one anti-peep sub-pixel 121 are arranged in the first pixel openings PK1 in the second patterned region P2 corresponding to the anti-peep sub-pixel 121. Specifically, by dividing one anti-peep sub-pixel 121 into a plurality of light-emitting parts 1211, the light-emitting area of each light-emitting part 1211 can be reduced, and the light-emitting angle of the anti-peep sub-pixel 121 can be further reduced, thereby improving the anti-peep effect.

[0127] In some embodiments, the plurality of first pixel openings PK1 within the same second patterning area P2 have the same size, so that the light uniformity of each light emitting part 1211 of the privacy sub-pixel 121 can be improved. In specific implementation, the shape of the orthographic projection of the first pixel opening PK1 on the substrate can be adapted to the shape of the orthographic projection of the corresponding first opening K1 on the substrate 11. For example, the orthographic projection of the first opening K1 on the substrate 11 is circular, and the orthographic projection of the first pixel opening PK1 on the substrate can also be circular, which is not limited herein.

[0128] FIG. 12 is a schematic view of a cross-sectional structure of a display substrate according to an embodiment of the present disclosure.

[0129] In some embodiments, as shown in FIG. 12, the display substrate further includes a driving circuit layer 20. The driving circuit layer 20 is configured to provide a driving signal. The driving circuit layer 20 is located between the substrate 11 and the pixel definition layer 19. The driving circuit layer 20 includes a first electrode 201. The privacy sub-pixel 121 is connected to the first electrode 201 in one-to-one correspondence, and the first electrode 201 is configured to drive the privacy sub-pixel 121 to emit light. Specifically, a plurality of light emitting parts 1211 of the privacy sub-pixel 121 are connected to the same first electrode 201 in correspondence.

[0130] In specific implementation, as shown in FIG. 12, the orthographic projection of the second patterning area P2 on the substrate 11 can be arranged to fall within the orthographic projection of the corresponding first electrode 201 on the substrate 11. The first electrode 201 corresponding to the second patterning area P2 is the first electrode 201 corresponding to the privacy sub-pixel 121.

[0131] FIG. 13 is a schematic view of a cross-sectional structure of a display substrate according to an embodiment of the present disclosure.

[0132] In some embodiments, as shown in FIG. 13, the display substrate further includes a shared sub-pixel 122. The pixel definition layer 19 further includes a second pixel opening PK2. One second pixel opening PK2 corresponds to one shared sub-pixel 122, and the shared sub-pixel 122 is arranged in the second pixel opening PK2 in one-to-one correspondence.

[0133] The driving circuit layer 20 further includes a second electrode 202. The shared sub-pixel 122 is connected to the second electrode 202 in one-to-one correspondence, and the second electrode 202 is configured to drive the shared sub-pixel 122 to emit light. In specific implementation, as shown in FIG. 13, the orthographic projection of the shared sub-pixel 122 on the substrate 11 can be arranged to fall within the orthographic projection of the second electrode 202 on the substrate 11, which is not limited herein.

[0134] In some embodiments, the driving circuit layer 20 includes a plurality of pixel circuits. One first electrode 201 corresponds to one second electrode 202, and the first electrode 201 and the corresponding second electrode 202 are connected to the same pixel circuit. That is, one pixel circuit can be connected to one privacy sub-pixel 121 and one shared sub-pixel 122 at the same time, so that the switching between the privacy mode and the sharing mode can be realized by one pixel circuit, thereby facilitating the reduction of the number of pixel circuits in the driving circuit layer 20 and the reduction of the design and manufacturing difficulty of the display substrate.

[0135] FIG. 14 is a schematic diagram of a pixel circuit of a display substrate provided by an embodiment of the present disclosure.

[0136] In some embodiments, the switching between the privacy mode and the sharing mode can be realized by one pixel circuit, where only the privacy sub-pixel 121 is lit in the privacy mode, and the privacy sub-pixel 121 and the shared sub-pixel 122 are lit at the same time in the sharing mode. Specifically, the pixel circuit includes a first transistor T1, a second transistor T2, a third transistor T3, a fourth transistor T4, a fifth transistor T5, a sixth transistor T6, a seventh transistor T7, an eighth transistor T8, and a first capacitor C1. The gate of the fifth transistor T5 and the gate of the sixth transistor T6 are connected to the first light-emitting control signal line EM1. The gate of the second transistor T2 and the gate of the fourth transistor T4 are connected to the scanning line GT. The source of the fourth transistor T4 is connected to the data line Vdata. The gate of the first transistor T1 and the gate of the seventh transistor T7 are connected to the reset control signal line Re. The source of the first transistor T1 is connected to the first initial voltage line Vinit1, and the source of the seventh transistor T7 is connected to the second voltage line Vinit2. One end of the first capacitor C1 is connected to the gate of the third transistor T3, and the other end is connected to the power supply line VDD. The drain of the fifth transistor T5 is connected to the third transistor T3, and the source is connected to the power supply line VDD. The gate of the eighth transistor T8 is connected to the second light-emitting control signal line EM2. In specific implementation, the eighth transistor T8 is controlled to be disconnected by the second light-emitting control signal line EM2, so that only the privacy sub-pixel 121 is lit, and the privacy mode is realized. The eighth transistor T8 is controlled to be turned on by the second light-emitting control signal line EM2, so that the privacy sub-pixel 121 and the shared sub-pixel 122 are lit at the same time, and the sharing mode is realized. In specific implementation, the pixel circuit can also be other structures, which are not limited herein.

[0137] FIG. 15 is a schematic diagram of another pixel circuit of a display substrate provided by an embodiment of the present disclosure.

[0138] In some embodiments, the switching between the privacy mode and the sharing mode can be realized by a pixel circuit. In the privacy mode, only the privacy sub-pixel 121 is lighted; in the sharing mode, only the sharing sub-pixel 122 is lighted. Specifically, the pixel circuit includes a first transistor T1, a second transistor T2, a third transistor T3, a fourth transistor T4, a fifth transistor T5, a sixth transistor T6, a seventh transistor T7, an eighth transistor T8, a ninth transistor T9, and a first capacitor C1. The gate of the fifth transistor T5 and the gate of the sixth transistor T6 are connected to a first light-emitting control signal line EM1. The gate of the second transistor T2 and the gate of the fourth transistor T4 are connected to a scanning line GT. The source of the fourth transistor T4 is connected to a data line Vdata. The gate of the first transistor T1 is connected to a first reset control signal line Re1, and the source of the first transistor T1 is connected to a first initial voltage line Vinit1. The gate of the seventh transistor T7 is connected to a second reset control signal line Re2, and the source of the seventh transistor T7 is connected to a second initial voltage line Vinit2. One end of the first capacitor C1 is connected to the gate of the third transistor T3, and the other end is connected to a power supply line VDD. The drain of the fifth transistor T5 is connected to the third transistor T3, and the source is connected to the power supply line VDD. The gate of the eighth transistor T8 is connected to a second light-emitting control signal line EM2. The gate of the ninth transistor T9 is connected to a third light-emitting control signal line EM3. In specific implementation, the eighth transistor T8 is controlled to be turned off by the second light-emitting control signal line EM2, and the ninth transistor T9 is controlled to be turned on by the third light-emitting control signal line EM3, so that only the privacy sub-pixel 121 is lighted, and the privacy mode is realized. The eighth transistor T8 is controlled to be turned on by the second light-emitting control signal line EM2, and the ninth transistor T9 is controlled to be turned off by the third light-emitting control signal line EM3, so that only the sharing sub-pixel 122 is lighted, and the sharing mode is realized. In specific implementation, the pixel circuit can also be other structures, which are not limited herein.

[0139] FIG. 16 is a schematic view of a cross-sectional structure of a display substrate according to an embodiment of the present disclosure.

[0140] In some embodiments, as shown in FIG. 16, the display substrate further includes a touch layer 21. The touch layer 21 is located on the side of the first light-blocking layer 13 away from the substrate 11. The touch layer 21 includes at least one touch metal layer, and one of the touch metal layers is multiplexed as a second light-blocking layer, thereby facilitating reduction in the number of films of the display substrate and reduction in the thickness of the display substrate.

[0141] For example, as shown in FIG. 16, the touch layer 21 includes a first touch metal layer 211 and a second touch metal layer 212, where the second touch metal layer 212 can be disposed on a side of the first touch metal layer 211 away from the substrate 11. The first touch metal layer 211 includes a bridge electrode 2111, the second touch metal layer 212 includes a first touch electrode 2121 and a second touch electrode 2122, and the bridge electrode 2111, the first touch electrode 2121 and the second touch electrode 2122 can all adopt a metal mesh structure. The mesh openings of the metal mesh correspond to the privacy sub-pixels or the co-image sub-pixels, so as to transmit the light emitted by the privacy sub-pixels or the co-image sub-pixels. The extension direction of the first touch electrode 2121 and the extension direction of the second touch electrode 2122 intersect with each other. The first touch electrode 2121 is directly connected through the second touch metal layer 212 at the intersection position C (the position enclosed by the dashed line), and the second touch electrode 2122 is connected through the bridge electrode 2111 at the intersection position C. The specific structure of the touch layer 21 can also refer to related technologies, which will not be described here. The first touch metal layer 211 can be reused as the second light shielding layer 14, and the first touch metal layer 211 further includes the first light shielding structure 141.

[0142] In some embodiments, the first touch metal layer 211 can also be disposed on a side of the second touch metal layer 212 away from the substrate 11, which is not limited here.

[0143] The third light shielding layer 15 can be disposed on a side of the touch layer 21 away from the substrate 11, for shielding the touch layer 21, reducing the reflection of the metal in the touch layer 21 to the ambient light, and improving the display effect.

[0144] FIG. 17 is a schematic view of a cross-sectional structure of a display substrate according to another embodiment of the present disclosure.

[0145] In some embodiments, as shown in FIG. 17, on the basis of the embodiment shown in FIG. 16, the first light shielding layer 13 can be made of a metal material. The first light shielding layer 13 can be electrically connected to a constant voltage line, for example, the first light shielding layer 13 can be grounded or connected to the negative electrode of a power supply. The constant voltage line can load a constant voltage on the first light shielding layer 13, so that the first light shielding layer 13 can play a role of a shielding layer, for example, which can be used for shielding between the touch layer signal and the driving circuit layer signal. In specific implementation, the first light shielding layer 13 can be a single-layer metal layer structure or a stacked structure of multiple metal layers. For example, the first light shielding layer 13 can be a single-layer aluminum metal layer, or the first light shielding layer 13 can be a stacked structure of titanium / aluminum / titanium metal layers, which is not limited here.

[0146] FIG. 18 is a schematic view of a cross-sectional structure of a display substrate according to another embodiment of the present disclosure.

[0147] In some embodiments, as shown in FIG. 18, the display substrate further comprises a touch layer 21. The touch layer 21 is located on the side of the second light shielding layer 14 away from the substrate 11.

[0148] In practice, as shown in FIG. 18, the second light shielding layer 14 can be electrically connected to a constant voltage line, for example, the second light shielding layer 14 can be grounded or connected to the negative pole of a power supply. The constant voltage line can load a constant voltage to the second light shielding layer 14, so that the second light shielding layer 14 can function as a shielding layer, for example, to shield the touch layer signal from the driving circuit layer signal. This is not limited herein.

[0149] FIG. 19 is a schematic diagram of a cross-sectional structure of a display substrate according to an embodiment of the present disclosure.

[0150] In some embodiments, as shown in FIG. 19, the display substrate further comprises a touch layer 21. The touch layer 21 is located between the second light shielding layer 14 and the substrate 11. The touch layer 21 comprises at least one touch metal layer, and one of the touch metal layers is multiplexed as the first light shielding layer 13, thereby facilitating the reduction of the number of films of the display substrate and the reduction of the thickness of the display substrate.

[0151] For example, as shown in FIG. 19, the touch layer 21 comprises a first touch metal layer 211 and a second touch metal layer 212, wherein the second touch metal layer 212 is located on the side of the first touch metal layer 211 away from the substrate 11. The first touch metal layer comprises a bridging electrode 2111 for bridging a touch electrode located in the second touch metal layer 212. The specific structure of the touch layer 21 can refer to the related content in the embodiment shown in FIG. 16, which is not repeated here. The first touch metal layer 211 is also multiplexed as the first light shielding layer 13, and the first touch metal layer 211 comprises a first opening K1. This is not limited herein.

[0152] In the embodiments of the present disclosure, the peep-proof sub-pixel can be a light emitting diode (LED), a mini light emitting diode (Mini LED), a micro light emitting diode (Micro LED), a quantum dot light emitting diode (QLED), or an organic light emitting diode (OLED), and the like, thereby forming an LED display substrate, a Mini LED display substrate, a Micro LED display substrate, a QLED display substrate, or an OLED display substrate, and the like, without limitation. The difference between LED, Mimi LED, and Micro LED mainly lies in the size, for example, the maximum size of LED on the plane is usually more than 200 μm, the maximum size of Mimi LED on the plane is usually 50 μm to 200 μm, and the maximum size of Micro LED on the plane is usually less than 50 μm. According to different division rules, LED, Mimi LED, and Micro LED can also be other size ranges, without limitation.

[0153] The following takes an OLED display substrate as an example to illustrate the manufacturing process of the display substrate provided by the embodiments of the present disclosure.

[0154] FIG. 20 is a schematic diagram of the manufacturing process of the display substrate provided by the embodiments of the present disclosure.

[0155] In a specific manufacturing process of a display substrate provided by the embodiments of the present disclosure, as shown in FIG. 20, first, the driving circuit layer 20 and the pixel definition layer 19 are sequentially manufactured on the substrate 11. Specifically, the manufacturing process of the driving circuit layer 20 includes manufacturing a second buffer layer (Buffer), a patterned active layer (p-si), a gate insulating layer (GI), a gate (Gate), a source (Source) and a drain (Drain), a planar layer (PLN), a first electrode 201, and a second electrode 202 on the substrate 11. The first electrode 201 and the second electrode 202 can be used as an anode of an OLED device, the active layer (p-si), the gate (Gate), the source (Source), and the drain (Drain) are used to form a thin film transistor, and the first electrode 201 and the second electrode 202 are connected to a thin film transistor, respectively.

[0156] The pixel definition layer 19 is formed on the side of the driving circuit layer 20 away from the substrate 11. The pixel definition layer 19 is etched to form a first pixel opening PK1 and a second pixel opening PK2. One of the first electrodes 201 corresponds to a plurality of the first pixel openings PK1, and one of the second electrodes 202 corresponds to one of the second pixel openings PK2. The specific correspondence relationship can be referred to the description of the foregoing related part, and will not be described herein.

[0157] FIG. 21 is a schematic diagram of a process of manufacturing the display substrate according to an embodiment of the present disclosure.

[0158] After the pixel definition layer 19 is manufactured, as shown in FIG. 21, the privacy sub-pixel 121 and the shared sub-pixel 122 are manufactured in the first pixel opening PK1, respectively. The manufacturing process of the privacy sub-pixel 121 and the shared sub-pixel 122 specifically includes sequentially forming an organic light-emitting layer and a cathode of an OLED device on the side of the pixel definition layer 19 away from the substrate 11 by using a vacuum evaporation process. The organic light-emitting layer includes but is not limited to a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, etc. In a specific implementation, the evaporation process of the OLED device can be referred to the related art, and will not be described herein.

[0159] Then a thin film encapsulation layer (TFE) 22 is formed on the side of the cathode away from the substrate 11. The thin film encapsulation layer 22 can be a single layer structure or a stack structure of multiple film layers. When the thin film encapsulation layer 22 is a single layer structure, it can be made of inorganic materials such as silicon oxide, silicon nitride, silicon oxynitride, aluminum oxide, titanium oxide, etc. When the thin film encapsulation layer 22 is a stack structure, it can include an inorganic film layer for blocking water and oxygen and an organic film layer for stress release and planarization. The inorganic film layer is prepared by chemical vapor deposition or atomic layer deposition, and the material can be silicon nitride, silicon oxide, silicon oxynitride, aluminum oxide, titanium oxide, etc., but is not limited thereto. The organic layer is prepared by inkjet printing, screen printing, dispensing, etc. Specifically, a first inorganic film layer can be deposited on the side of the cathode away from the substrate 11. The first inorganic film layer can be a single layer formed of any of the aforementioned materials or a stack formed of multiple materials. The orthographic projection of the first inorganic film layer on the substrate 11 needs to completely cover the active area (AA). Then a first organic film layer is prepared on the side of the first inorganic film layer away from the substrate 11. The orthographic projection of the first organic film layer on the substrate 11 needs to completely cover the active area (AA) and fall within the orthographic projection of the first inorganic film layer on the substrate 11, and the orthographic projection of the cathode on the substrate 11 falls within the orthographic projection of the first organic film layer on the substrate 11. Then a second inorganic film layer is prepared on the side of the first organic layer away from the substrate 11. The second inorganic film layer can be prepared by referring to the first inorganic film layer, and the material of the second inorganic film layer can be the same as or different from that of the first inorganic film layer, which is not limited herein. The orthographic projection of the second inorganic film layer on the substrate 11 can completely coincide with the orthographic projection of the first inorganic film layer on the substrate 11, or the orthographic projection of the first inorganic film layer on the substrate 11 can be set to fall within the orthographic projection of the second inorganic film layer on the substrate 11, which is not limited herein. In specific implementation, the thickness of the first organic film layer can be set to 2-8 μm, and the overall thickness of the thin film encapsulation layer 22 can be set to less than or equal to 10 μm, which is not limited herein.

[0160] FIG. 22 is a schematic diagram of a process of manufacturing a display substrate according to an embodiment of the present disclosure.

[0161] After the thin film encapsulation layer 22 is prepared, a first light shielding layer 13 is prepared on the side of the thin film encapsulation layer 22 away from the substrate 11. A plurality of first openings K1 corresponding to the privacy sub-pixels and a fourth opening K4 corresponding to the shared sub-pixel are formed in the first light shielding layer 13 by etching or other processes. The specific correspondence relationship can be referred to the related part in the foregoing content, which is not described herein.

[0162] Then, the optical control layer 23 is made on the side of the first light shielding layer 13 away from the substrate 11. The material of the optical control layer 23 can be an organic material commonly used in the art for making a planarization layer. The optical control layer 23 can play a planarization role, and by adjusting the thickness of the optical control layer 23, the light condensing ability of the lens in the subsequent light condensing layer can be adjusted.

[0163] FIG. 23 is a fourth schematic diagram of a manufacturing process of a display substrate according to an embodiment of the present disclosure.

[0164] After the optical control layer 23 is made, the second light shielding layer 14 is made on the side of the optical control layer 23 away from the substrate 11, and the first light shielding structure 141 and other structures are formed on the second light shielding layer 14 by etching and other patterning processes. The specific structure of the second light shielding layer 14 can be referred to the description of the related part in the foregoing content, and will not be described here.

[0165] Then, the first buffer layer is made on the side of the second light shielding layer 14 away from the substrate 11. The material of the first buffer layer can be an organic material commonly used in the art for making a planarization layer, so as to play a planarization role and a protection role of the second light shielding layer 14.

[0166] Then, the third light shielding layer 15 is made on the side of the first buffer layer away from the substrate 11, and the third opening K3 corresponding to the privacy sub-pixel and the opening corresponding to the shared sub-pixel are formed on the second light shielding layer 15 by etching and other patterning processes. The specific structure of the second light shielding layer 15 can be referred to the description of the related part in the foregoing content, and will not be described here.

[0167] Then, the third buffer layer is made on the side of the second light shielding layer 15 away from the substrate 11. The material of the first buffer layer can be an organic material commonly used in the art for making a planarization layer, so as to play a planarization role and a protection role of the second light shielding layer 15.

[0168] FIG. 24 is a fifth schematic diagram of a manufacturing process of a display substrate according to an embodiment of the present disclosure.

[0169] After the third buffer layer is made, the lens layer 17 is made on the side of the third buffer layer away from the substrate 11. The specific structure of the lens layer 17 can be referred to the description of the related part in the foregoing content, and will not be described here.

[0170] Then, the cover layer 18 is made on the side of the lens layer 17 away from the substrate 11. The specific structure of the cover layer 18 can be referred to the description of the related part in the foregoing content, and will not be described here.

[0171] The manufacturing process of the display substrate provided by the embodiments of the present disclosure is only used for exemplifying one possible manufacturing process of the display substrate provided by the embodiments of the present disclosure, and is not used for limiting the specific structure and manufacturing method of the display substrate provided by the embodiments of the present disclosure. The display substrate provided by the embodiments of the present disclosure can also have other structures necessary for realizing specific functions when being specifically manufactured, and the display substrate can be set according to actual conditions during specific implementation, which is not limited herein. The relative positions between the film layers of the display substrate provided by the embodiments of the present disclosure can also be adjusted according to the actual structure of the display substrate during specific manufacturing, which is not described herein.

[0172] The second aspect of the present disclosure also provides a display device. The display device comprises the display substrate provided by any one of the foregoing embodiments. The display device provided by the embodiments of the present disclosure has the same or similar technical effects as any one of the foregoing embodiments during specific implementation, which is not described herein. The display device can be a mobile phone, a tablet computer, a monitor, a television, etc. during specific implementation, which is not limited herein.

[0173] Although the preferred embodiments of the present disclosure have been described, those skilled in the art can make additional changes and modifications to the embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including all the changes and modifications falling within the scope of the present disclosure.

[0174] Obviously, those skilled in the art can make various modifications and variations to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalent technologies, the present disclosure also intends to include these modifications and variations.

Claims

1. A display substrate, wherein, The display substrate comprises: a substrate; a privacy sub-pixel located on one side of the substrate; a first light shielding layer located on a side of the first light shielding layer away from the privacy sub-pixel; a plurality of first openings are formed in the first light shielding layer corresponding to each of the privacy sub-pixels; a second light shielding layer located on a side of the second light shielding layer away from the privacy sub-pixel; the second light shielding layer comprises a first light shielding structure, and a projection of the first light shielding structure on the substrate is located between projections of adjacent first openings on the substrate; the material of the second light shielding layer is a metal material. 2.The display substrate of claim 1, wherein, a width of the projection of the first light shielding structure on the substrate at a narrowest position is less than or equal to 5 μm. 3.The display substrate of claim 2, wherein, a longitudinal distance between the first light shielding layer and the second light shielding layer is 3 μm to 10 μm; a longitudinal distance between the first light shielding layer and the privacy sub-pixel is 3 μm to 8 μm.

4. The display substrate of any one of claims 1-3, wherein, a width of the projection of the first light shielding structure on the substrate at the narrowest position is greater than or equal to 2 μm.

5. The display substrate according to any one of claims 1 to 4, wherein the second light shielding layer further comprises a second light shielding structure; the second light shielding structure defines a first patterned area, the first light shielding structure is located in the first patterned area, and is connected with the second light shielding structure; the first light shielding structure and the second light shielding structure define a plurality of second openings; the second openings correspond to the first openings one by one, and a projection of the first opening on the substrate is located in a projection of the second opening on the substrate.

6. The display substrate of any one of claims 1-5, wherein, The display substrate further comprises: a light condensing layer located on a side of the second light shielding layer away from the substrate; the light condensing layer comprises a plurality of first light condensing structures; the first light condensing structures correspond to the first openings one by one, and a projection of the first light condensing structure on the substrate is located in a projection of the first opening on the substrate. 7.The display substrate of claim 6, wherein, the projection of the first light shielding structure on the substrate and the projection of the first light condensing structure on the substrate are in contact or partially overlap. 8.The display substrate of claim 6 or 7, wherein, the first light condensing structure is a convex lens.

9. The display substrate of any of claims 6-8, wherein, The display substrate further comprises: a shared sub-pixel; the shared sub-pixel is located in the same layer as the privacy sub-pixel; the first light shielding layer further comprises a fourth opening corresponding to each of the shared sub-pixels; the light condensing layer further comprises a second light condensing structure; the second light condensing structure corresponds to the fourth opening one by one, and a projection of the fourth opening on the substrate is located in a projection of the second light condensing structure on the substrate; the second light condensing structure is a convex lens.

10. The display substrate of any one of claims 1-9, wherein, The display substrate further comprises: a pixel definition layer located between the substrate and the first light shielding layer; the pixel definition layer comprises a plurality of second patterned areas, and each of the second patterned areas comprises a plurality of first pixel openings; the first pixel openings correspond to the first openings one by one; the privacy sub-pixel corresponds to the second patterned area one by one, and each of the privacy sub-pixels comprises a plurality of light emitting parts arranged in the first pixel openings in the corresponding second patterned area. 11.The display substrate of claim 10, wherein, the first pixel openings in the same second patterned area are of the same size. 12.The display substrate of claim 10 or 11, wherein, The display substrate further comprises: A driving circuit layer is located between the substrate and the pixel definition layer. The driving circuit layer comprises a first electrode; the privacy sub-pixel is connected to the first electrode one by one; a normal projection of the second patterned area on the substrate is located within a normal projection of the corresponding first electrode on the substrate. 13.The display substrate of claim 12, wherein, The display substrate further comprises a shared sub-pixel. The pixel definition layer is further provided with a second pixel opening; the shared sub-pixel is arranged in the second pixel opening one by one. The driving circuit layer further comprises a second electrode; the shared sub-pixel is connected to the second electrode one by one; a normal projection of the second pixel opening on the substrate is located within a normal projection of the corresponding second electrode on the substrate. 14.The display substrate of claim 13, wherein, The driving circuit layer comprises a plurality of pixel circuits; one first electrode corresponds to one second electrode; the first electrode and the corresponding second electrode are connected to the same pixel circuit.

15. The display substrate of any one of claims 1-14, wherein, The display substrate further comprises: A touch layer is located on a side of the first light shielding layer away from the substrate; the touch layer comprises at least one touch metal layer; one of the touch metal layers is multiplexed as the second light shielding layer. 16.The display substrate of claim 15, wherein, The touch layer comprises a first touch metal layer and a second touch metal layer; the first touch metal layer comprises a bridge electrode; the second touch metal layer comprises a first touch electrode and a second touch electrode; an extension direction of the first touch electrode and an extension direction of the second touch electrode intersect with each other; the first touch electrode is directly connected at the intersection position through the second touch metal layer; the second touch electrode is connected at the intersection position through the bridge electrode; The first touch metal layer is multiplexed as the second light shielding layer.

17. The display substrate of claim 15, wherein, The first light shielding layer is made of metal material; the first light shielding layer is electrically connected to a constant voltage line.

18. The display substrate of any one of claims 1-14, wherein, The display substrate further comprises: A touch layer is located on a side of the second light shielding layer away from the substrate; The second light shielding layer is electrically connected to a constant voltage line.

19. The display substrate of any one of claims 1-14, wherein, The display substrate further comprises: A touch layer is located between the second light shielding layer and the substrate; the touch layer comprises at least one touch metal layer; one of the touch metal layers is multiplexed as the first light shielding layer.

20. The display substrate of any one of claims 1-19, wherein, The display substrate further comprises: A third light shielding layer; the third light shielding layer is located on a side of the second light shielding layer away from the substrate; the third light shielding layer is provided with a third opening; the third opening corresponds to the privacy sub-pixel one by one; a normal projection of a plurality of first openings corresponding to the same privacy sub-pixel on the substrate is located within a normal projection of the third opening on the substrate; A normal projection of the first light shielding structure on the substrate contacts or at least partially overlaps with a normal projection of the third light shielding layer on the substrate.

21. The display substrate of claim 20, wherein, The display substrate further comprises: A filter layer; the filter layer comprises a plurality of filter portions; the filter portions are arranged in the third opening.

22. A display device comprising the display substrate according to any one of claims 1-21.

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