Display substrate and display device

Abstract

A display substrate and a display device relate to the technical field of display. The display substrate comprises a plurality of display units, each display unit comprises a plurality of pixel units arranged in an array mode in the row direction and / or the column direction, and the pixel units comprise shared pixel units and first peep-proof pixel units. The viewing angle of the first peep-proof pixel unit in the first direction is smaller than that of the shared pixel unit in the first direction, the viewing angle of the first peep-proof pixel unit in the first direction is smaller than that of the first peep-proof pixel unit in the second direction, and the first direction and the second direction intersect with each other.

Description

Display substrate and display device Technical Field

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

[0002] In most related technologies, privacy protection is achieved by applying a privacy film to the display panel. However, privacy films cannot switch between sharing mode and privacy mode. In some application scenarios, such as in-vehicle passenger displays or laptop displays, users sometimes need to share the displayed content with others, and sometimes do not want others to see the displayed content. In these cases, the display needs to be able to switch freely between sharing mode and privacy mode, that is, the display needs to be able to actively prevent peeping.

[0003] Overview

[0004] This disclosure provides a display substrate, including a plurality of display units, wherein the display units include:

[0005] Multiple pixel units are arrayed along a row direction and / or a column direction. The multiple pixel units include a shared pixel unit and a first privacy pixel unit. The viewing angle of the first privacy pixel unit in a first direction is smaller than that of the shared pixel unit in the first direction, and the viewing angle of the first privacy pixel unit in the first direction is smaller than that of the first privacy pixel unit in a second direction. The first direction and the second direction intersect each other.

[0006] In some implementations, the pixel unit includes a plurality of sub-pixels, and at least two sub-pixels emit different colors.

[0007] The sub-pixels in the first privacy pixel unit are divided into multiple first micro-pixels that are separated from each other. The multiple first micro-pixels located in the same sub-pixel emit the same color and are arranged along the first direction.

[0008] In some embodiments, the display substrate includes:

[0009] A light-emitting substrate, the light-emitting substrate including a substrate and a pixel defining layer disposed on one side of the substrate, the pixel defining layer defining a plurality of pixel openings, the pixel openings being used to dispose of light-emitting devices, the plurality of pixel openings including sub-pixel openings and first micro-pixel openings, different sub-pixel openings being located in different sub-pixels in the shared pixel unit, and different first micro-pixel openings being located in different first micro-pixels in the first privacy pixel unit;

[0010] A first light-shielding layer, disposed on the light-emitting side of the light-emitting substrate, includes: a plurality of first light-shielding strips located at intervals along the first direction and situated at the first privacy pixel unit; the first light-shielding strips extend along the second direction; and the orthographic projection of the first light-shielding strips onto the substrate is located on opposite sides of the first micro-pixel opening in the first direction; and

[0011] The second light-shielding layer is disposed on the side of the first light-shielding layer away from the light-emitting substrate, and includes a plurality of second openings that are separated from each other. In the orthographic projection on the substrate, the second openings overlap with the pixel openings one by one.

[0012] In some embodiments, in the orthographic projection on the substrate, the distance between the boundary of the first light-shielding strip near the first micropixel opening and the boundary of the first micropixel opening near the first light-shielding strip is less than or equal to 0.5 micrometers.

[0013] In some embodiments, the light-shielding area of ​​the first light-shielding layer does not overlap with the shared pixel unit when projected onto the substrate.

[0014] In some implementations, multiple sub-pixels located in the same pixel unit include a first sub-pixel, a second sub-pixel, and a third sub-pixel that emit different colors;

[0015] In the orthographic projection on the substrate, the first sub-pixel and the second sub-pixel, the first sub-pixel and the third sub-pixel, or the second sub-pixel and the third sub-pixel in the same first privacy pixel unit overlap with at least one identical first light-shielding strip.

[0016] In some embodiments, the orthographic projection boundary of the second opening on the substrate includes: two first boundaries disposed opposite to each other along the first direction, and two second boundaries disposed opposite to each other along the second direction;

[0017] In the orthographic projection on the substrate, the first boundary is recessed by a first distance relative to the boundary of the first micropixel opening toward the side away from the first micropixel opening, and the second boundary is recessed by a second distance relative to the boundary of the first micropixel opening toward the side away from the first micropixel opening, wherein the first distance is less than the second distance.

[0018] In some embodiments, in the orthographic projection of the second opening onto the substrate, the first boundary is recessed a third distance relative to the boundary of the sub-pixel opening toward the side away from the sub-pixel opening, and the second boundary is recessed a fourth distance relative to the boundary of the sub-pixel opening toward the side away from the sub-pixel opening, wherein the third distance, the fourth distance, and the second distance are approximately equal.

[0019] In some embodiments, the plurality of pixel units further includes a second privacy pixel unit, wherein the viewing angle of the second privacy pixel unit in the first direction is smaller than the viewing angle of the shared pixel unit in the first direction, and the viewing angle of the second privacy pixel unit in the second direction is smaller than the viewing angle of the shared pixel unit in the second direction;

[0020] The sub-pixels in the second privacy pixel unit are divided into multiple second micro-pixels that are separated from each other. The multiple second micro-pixels located in the same sub-pixel emit the same color and are arranged in an array along the first direction and / or the second direction.

[0021] In some embodiments, the plurality of pixel openings further include a plurality of second micropixel openings, with different second micropixel openings located in different second micropixels within the second privacy pixel unit;

[0022] The first light-shielding layer further includes a plurality of first openings located in the second privacy pixel unit and separated from each other. In the orthographic projection on the substrate, the first openings and the second micro-pixel openings overlap one-to-one, and the boundaries of the first openings and the boundaries of the second micro-pixel openings approximately coincide.

[0023] In some embodiments, the orthographic projection boundary of the second opening on the substrate includes: two first boundaries disposed opposite to each other along the first direction, and two second boundaries disposed opposite to each other along the second direction;

[0024] In the orthographic projection on the substrate, the first boundary is recessed by a third distance relative to the boundary of the sub-pixel opening toward the side away from the sub-pixel opening, and the second boundary is recessed by a fourth distance relative to the boundary of the sub-pixel opening toward the side away from the sub-pixel opening, wherein the third distance and the fourth distance are approximately equal.

[0025] In the orthographic projection on the substrate, the first boundary is recessed by a fifth distance relative to the boundary of the second micropixel opening toward the side away from the second micropixel opening, and the second boundary is recessed by a sixth distance relative to the boundary of the second micropixel opening toward the side away from the second micropixel opening. The fifth distance and the sixth distance are approximately equal and smaller than the third distance and the fourth distance.

[0026] In some embodiments, the display substrate further includes:

[0027] An optical lens layer, disposed between the light-emitting substrate and the second light-shielding layer, includes a plurality of optical lenses, wherein the optical lens layer and the orthographic projection of the shared pixel unit on the substrate do not overlap; and

[0028] A planarization layer is disposed between the optical lens layer and the second light-shielding layer. The refractive index of the planarization layer is less than that of the optical lens layer. The contact interface between the planarization layer and the optical lens is used to refract the light emitted by the light-emitting device so that the refracted light is deflected toward the side closer to the normal direction of the substrate.

[0029] In some embodiments, the optical lens layer and the planarization layer are stacked between the first light-shielding layer and the second light-shielding layer. In the orthographic projection on the substrate, the optical lens overlaps with a pixel opening located outside the shared pixel unit, and one pixel opening overlaps with one or more of the optical lenses.

[0030] In some embodiments, the optical lens layer and the planarization layer are stacked between the light-emitting substrate and the first light-shielding layer, and the orthogonal projection of the optical lens on the substrate is located within the orthogonal projection range of the pixel defining layer on the substrate.

[0031] In some embodiments, the light-emitting substrate further includes:

[0032] A light-emitting layer is disposed on the side of the pixel defining layer opposite to the substrate, and includes multiple light-emitting patterns located at different pixel openings;

[0033] The display substrate further includes at least one of the following:

[0034] An encapsulation layer is disposed between the light-emitting layer and the first light-shielding layer;

[0035] A touch layer is disposed between the encapsulation layer and the first light-shielding layer; and

[0036] A color resist layer is disposed on the side of the second light-shielding layer away from the substrate, and includes multiple color resist patterns located at different second openings.

[0037] In some embodiments, when the first direction is a row direction and the second direction is a column direction, the first privacy pixel unit is a row-oriented privacy pixel unit; or

[0038] When the first direction is a column direction and the second direction is a row direction, the first privacy pixel unit is a column-oriented privacy pixel unit.

[0039] In some embodiments, the display unit includes four pixel units located within a virtual quadrilateral, the four pixel units comprising:

[0040] The two shared pixel units and the two first privacy pixel units are arranged along one diagonal of the virtual quadrilateral, and the two first privacy pixel units are arranged along the other diagonal of the virtual quadrilateral; and

[0041] The two first privacy pixel units are two row-oriented privacy pixel units, or two column-oriented privacy pixel units, or one row-oriented privacy pixel unit and one column-oriented privacy pixel unit.

[0042] In some embodiments, the display unit includes four pixel units located within a virtual quadrilateral, the four pixel units comprising:

[0043] Two shared pixel units, one first privacy pixel unit, and one second privacy pixel unit are provided. The two shared pixel units are arranged along one diagonal of the virtual quadrilateral, and the first privacy pixel unit and the second privacy pixel unit are arranged along the other diagonal of the virtual quadrilateral. The first privacy pixel unit is either the row-oriented privacy pixel unit or the column-oriented privacy pixel unit. The viewing angle of the second privacy pixel unit in any direction is smaller than that of the shared pixel unit in that direction.

[0044] In some embodiments, the display unit includes four pixel units located within a virtual quadrilateral, the four pixel units comprising:

[0045] The virtual quadrilateral comprises one shared pixel unit, two first privacy pixel units, and one second privacy pixel unit. The shared pixel unit and the second privacy pixel unit are arranged along one diagonal of the virtual quadrilateral, and the two first privacy pixel units are arranged along the other diagonal of the virtual quadrilateral. The two first privacy pixel units include one row-oriented privacy pixel unit and one column-oriented privacy pixel unit. The viewing angle of the second privacy pixel unit in any direction is smaller than that of the shared pixel unit in that direction.

[0046] This disclosure provides a display device, including:

[0047] The display substrate as described in any embodiment; and

[0048] A driving component, connected to the display substrate, is used to drive the display substrate to emit light.

[0049] The above description is merely an overview of the technical solution disclosed herein. In order to better understand the technical means of this disclosure and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this disclosure more apparent and understandable, specific embodiments of this disclosure are described below.

[0050] Brief description of the attached diagram

[0051] To more clearly illustrate the technical solutions in the embodiments or related technologies of this disclosure, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the scale in the drawings is for illustration only and does not represent the actual scale.

[0052] Figure 1 shows a schematic cross-sectional structure of a display substrate provided in some embodiments;

[0053] Figure 2 shows a schematic diagram of the planar structure of a display substrate provided in some embodiments;

[0054] Figure 3 shows a schematic diagram of the planar structure of a display substrate provided in some other embodiments;

[0055] Figure 4 shows a schematic diagram of the planar structure of a display substrate provided in some other embodiments;

[0056] Figure 5 shows a cross-sectional structural schematic diagram of a display substrate provided in some other embodiments;

[0057] Figure 6 shows a cross-sectional structural schematic diagram of a display substrate provided in some other embodiments;

[0058] Figure 7 shows a schematic diagram of the planar structure of the display unit provided in some embodiments;

[0059] Figure 8 shows a schematic diagram of the planar structure of the display unit provided in some other embodiments;

[0060] Figure 9 shows a schematic diagram of the planar structure of the display unit provided in some other embodiments;

[0061] Figure 10 shows a schematic diagram of the planar structure of the display unit provided in some other embodiments;

[0062] Figure 11 shows a schematic diagram of the planar structure of a display substrate provided in some other embodiments.

[0063] Detailed description

[0064] 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 embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0065] This disclosure also provides a display substrate, as shown in FIG11, which includes a plurality of display units UT. The plurality of display units UT are arranged in an array, for example, along the row direction fh and the column direction fv.

[0066] As shown in Figure 2 or Figure 3, or any one of Figures 7 to 10, the display unit UT includes: multiple pixel units P arranged in an array along the row direction fh and / or the column direction fv.

[0067] For example, as shown in Figure 2 or Figure 3, the display unit UT includes two pixel units P arranged along the row direction fh.

[0068] For example, as shown in any of Figures 7 to 10, the display unit UT includes four pixel units P arranged in an array along the row direction fh and the column direction fv, and the four pixel units P form a 2-row × 2-column array.

[0069] As shown in any of Figures 2 to 4 and Figures 7 to 10, the multiple pixel units P in the display unit UT include a shared pixel unit P0 and a first privacy pixel unit P1. The viewing angle of the first privacy pixel unit P1 in the first direction f1 is smaller than the viewing angle of the shared pixel unit P0 in the first direction f1, and the viewing angle of the first privacy pixel unit P1 in the first direction f1 is smaller than the viewing angle of the first privacy pixel unit P1 in the second direction f2. The first direction f1 and the second direction f2 intersect each other.

[0070] During the process of driving the display substrate provided in this disclosure to display, it can be freely switched to the first privacy mode or the sharing mode as needed, thereby realizing the active privacy function.

[0071] For example, in the first privacy mode, the first privacy pixel unit P1 is controlled to emit light, while the shared pixel unit P0 is controlled not to emit light. Since the viewing angle of the first privacy pixel unit P1 in the first direction f1 is smaller than that of the shared pixel unit P0 in the first direction f1, and also smaller than that of the first privacy pixel unit P1 in the second direction f2, in the first privacy mode, the viewing angle of the display substrate in the first direction f1 is smaller than that in the second direction f2, thereby achieving a privacy effect in the first direction f1, that is, the display content cannot be seen on the opposite sides of the display substrate along the first direction f1, while the display content can be seen on the opposite sides of the display substrate along the second direction f2.

[0072] For example, in the sharing mode, the shared pixel unit P0 is controlled to emit light, and the first privacy pixel unit P1 is controlled to emit light or not emit light. Since the shared pixel unit P0 has a large viewing angle in both the first direction f1 and the second direction f2, in the sharing mode, the display substrate has a large viewing angle in both the first direction f1 and the second direction f2, thereby achieving a sharing effect in both the first direction f1 and the second direction f2, that is, the display content can be seen on both sides of the display substrate opposite to each other along the first direction f1 and along the second direction f2.

[0073] In some implementations, the viewing angle of the first privacy pixel unit P1 in the second direction f2 is approximately the same as that of the shared pixel unit P0 in the second direction f2.

[0074] In some implementations, the viewing angle of the shared pixel unit P0 in the first direction f1 is approximately the same as the viewing angle of the shared pixel unit P0 in the second direction f2.

[0075] In some implementations, as shown in Figure 2 or Figure 3, the first direction f1 and the second direction f2 are perpendicular to each other. For example, in Figure 2, the first direction f1 is the row direction fh, and the second direction f2 is the column direction fv. Or in Figure 3, the first direction f1 is the column direction fv, and the second direction f2 is the row direction fh.

[0076] As shown in Figure 2, the first direction f1 is the row direction fh, and the second direction f2 is the column direction fv. In this case, the first privacy pixel unit P1 is the row-direction privacy pixel unit P1H, and the first privacy mode is the row-direction privacy mode. By controlling the emission of the row-direction privacy pixel unit P1H, a privacy effect can be achieved in the row direction fh, that is, the display content cannot be seen on the opposite sides of the display substrate along the row direction fh, but the display content can be seen on the opposite sides of the display substrate along the column direction fv.

[0077] As shown in Figure 3, the first direction f1 is the column direction fv, and the second direction f2 is the row direction fh. In this case, the first privacy pixel unit P1 is the column-oriented privacy pixel unit P1V, and the first privacy mode is the column-oriented privacy mode. By controlling the light emission of the column-oriented privacy pixel unit P1V, a privacy effect can be achieved in the column direction fv. That is, the display content cannot be seen on the opposite sides of the display substrate along the column direction fv, but the display content can be seen on the opposite sides of the display substrate along the row direction fh.

[0078] In some implementations, as shown in any of Figures 2 to 4, a pixel unit P includes a plurality of sub-pixels PX, and at least two sub-pixels PX emit different colors.

[0079] In some implementations, as shown in any of Figures 2 to 4, multiple sub-pixels PX located in the same pixel unit P include a first sub-pixel PX1, a second sub-pixel PX2, and a third sub-pixel PX3, each with a different emission color. For example, the first sub-pixel PX1 is a red sub-pixel, the second sub-pixel PX2 is a green sub-pixel, and the third sub-pixel PX3 is a blue sub-pixel; or the first sub-pixel PX1 is a red sub-pixel, the second sub-pixel PX2 is a blue sub-pixel, and the third sub-pixel PX3 is a green sub-pixel.

[0080] For example, the arrangement of the first sub-pixel PX1, the second sub-pixel PX2, and the third sub-pixel PX3 within a pixel unit P can be a triangular arrangement or a real RGB type arrangement (as shown in Figures 2 to 4), etc.

[0081] In some implementations, as shown in Figure 2 or Figure 3, the sub-pixels PX in the first privacy pixel unit P1 are divided into multiple first micropixels PW1 that are separated from each other. The multiple first micropixels PW1 located in the same sub-pixel PX emit the same color and are arranged along the first direction f1. This arrangement is beneficial for achieving a privacy effect in the first direction f1.

[0082] For example, as shown in Figure 2, the first sub-pixel PX1, the second sub-pixel PX2, and the third sub-pixel PX3 are all divided into three first micro-pixels PW1 arranged along the row direction fh.

[0083] For example, as shown in Figure 3, the first sub-pixel PX1 is divided into three first micro-pixels PW1 arranged along the column direction fv. The second sub-pixel PX2 is divided into five first micro-pixels PW1 arranged along the column direction fv. The third sub-pixel PX3 is divided into eight first micro-pixels PW1 arranged along the column direction fv.

[0084] For example, a subpixel PX contains a number of first micropixels PW1 greater than or equal to 2 and less than or equal to 20 or 10.

[0085] In some implementations, the anodes of multiple first micropixels PW1 located in the same sub-pixel PX are interconnected, while the anodes of multiple first micropixels PW1 located in different sub-pixels PX are separated from each other.

[0086] In some embodiments, as shown in FIG1, the display substrate includes a light-emitting substrate 11, the light-emitting substrate 11 includes a substrate BP and a pixel defining layer PDL disposed on one side of the substrate BP. The pixel defining layer PDL defines a plurality of pixel openings H0. The pixel openings H0 are used to set light-emitting devices. The plurality of pixel openings H0 include sub-pixel openings H00 and first micro-pixel openings H01. Different sub-pixel openings H00 are located in different sub-pixels PX in a shared pixel unit P0, and different first micro-pixel openings H01 are located in different first micro-pixels PW1 in a first privacy pixel unit P1.

[0087] In some embodiments, the substrate BP is a driving substrate, which may include multiple driving circuits located in different sub-pixels PX. The driving circuits are used to drive light-emitting devices located in the sub-pixels PX to emit light. The driving circuits may be connected to the anode of the light-emitting devices, and one sub-pixel PX may be driven to emit light by one driving circuit.

[0088] As shown in Figure 1, in the shared pixel unit P0, a sub-pixel PX has a sub-pixel opening H00. In the first privacy pixel unit P1, a first micropixel PW1 has a first micropixel opening H01.

[0089] In some embodiments, as shown in FIG1, the display substrate further includes a first light-shielding layer BM1, which is disposed on the light-emitting side of the light-emitting substrate 11.

[0090] As shown in Figure 2 or Figure 3a, the first light-shielding layer BM1 includes: a plurality of first light-shielding strips BM11 located in the first privacy pixel unit P1 and arranged at intervals along the first direction f1, the first light-shielding strips BM11 extending along the second direction f2, and the orthographic projection of the first light-shielding strips BM11 on the substrate BP is located on opposite sides of the first micro-pixel opening H01 in the first direction f1.

[0091] For example, as shown in Figure 2a, the first direction f1 is the row direction fh, the second direction f2 is the column direction fv, and multiple first light-shielding strips BM11 are arranged along the row direction fh and extend along the column direction fv. The first light-shielding strips BM11 arranged along the row direction fh can block more of the wide-angle light in the row direction fh, thereby reducing the viewing angle of the first privacy pixel unit P1 in the row direction fh, enabling the first privacy pixel unit P1 to achieve a privacy effect in the row direction fh.

[0092] For example, as shown in Figure 3a, the first direction f1 is the column direction fv, the second direction f2 is the row direction fh, and multiple first light-shielding strips BM11 are arranged along the column direction fv and extend along the row direction fh. The first light-shielding strips BM11 arranged along the column direction fv can block more of the wide-angle light in the column direction fv, thereby reducing the viewing angle of the first privacy pixel unit P1 in the column direction fv, enabling the first privacy pixel unit P1 to achieve a privacy effect in the column direction fv.

[0093] Therefore, by setting multiple first light-shielding strips BM11 extending along the second direction f2 and arranged along the first direction f1, the wide-angle light in the first direction f1 can be blocked, thereby reducing the viewing angle of the first privacy pixel unit P1 in the first direction f1, so that the first privacy pixel unit P1 can achieve the privacy effect in the first direction f1.

[0094] In some embodiments, as shown in Figure 2 or Figure 3a, in the orthographic projection on the substrate BP, the distance between the boundary of the first light-shielding strip BM11 near the first micro-pixel opening H01 and the boundary of the first micro-pixel opening H01 near the first light-shielding strip BM11 is less than or equal to 0.5 micrometers. Further, the boundary of the first light-shielding strip BM11 near the first micro-pixel opening H01 and the boundary of the first micro-pixel opening H01 near the first light-shielding strip BM11 are approximately coincident.

[0095] By setting the distance between the boundary of the first light-shielding strip BM11 near the first micro-pixel opening H01 and the boundary of the first micro-pixel opening H01 near the first light-shielding strip BM11 to be small or to overlap with each other, the first light-shielding strip BM11 can effectively block the wide-angle light in the first direction f1, thereby reducing the viewing angle of the first privacy pixel unit P1 in the first direction f1.

[0096] For example, in Figure 2a, for each first micropixel opening H01, the right edge of the first light-shielding strip BM11 located to the left of the first micropixel opening H01 roughly coincides with the left edge of the first micropixel opening H01, and the left edge of the first light-shielding strip BM11 located to the right of the first micropixel opening H01 roughly coincides with the right edge of the first micropixel opening H01.

[0097] For example, in Figure 3a, for each first micropixel opening H01, the lower boundary of the first light-shielding strip BM11 located on the upper side of the first micropixel opening H01 roughly coincides with the upper boundary of the first micropixel opening H01, and the upper boundary of the first light-shielding strip BM11 located on the lower side of the first micropixel opening H01 roughly coincides with the lower boundary of the first micropixel opening H01.

[0098] In some embodiments, as shown in FIG1, the orthographic projection of the light-shielding area of ​​the first light-shielding layer BM1 onto the substrate BP does not overlap with the shared pixel unit P0. The light-shielding area of ​​the first light-shielding layer BM1 is the region where light cannot pass through the first light-shielding layer BM1.

[0099] In some embodiments, as shown in Figure 2 or Figure 3a, in the orthographic projection on the substrate BP, the first sub-pixel PX1 and the second sub-pixel PX2, the first sub-pixel PX1 and the third sub-pixel PX3, or the second sub-pixel PX2 and the third sub-pixel PX3, located in the same first privacy pixel unit P1, overlap with at least one identical first light-shielding strip BM11. This helps to improve viewing angle uniformity and simplify the process and design.

[0100] For example, in Figure 2a, the first direction f1 is the row direction fh, the second direction f2 is the column direction fv, the first sub-pixel PX1 and the second sub-pixel PX2 are arranged along the column direction fv, and the first light-shielding strip BM11 extends along the column direction fv. In the orthographic projection on the substrate BP, the first sub-pixel PX1 and the second sub-pixel PX2 both overlap with the two identical first light-shielding strips BM11.

[0101] For example, in Figure 3a, the first direction f1 is the column direction fv, the second direction f2 is the row direction fh, the first sub-pixel PX1 and the second sub-pixel PX2 are arranged along the column direction fv, and the first light-shielding strip BM11 extends along the row direction fh. In the orthographic projection on the substrate BP, the first sub-pixel PX1 and the third sub-pixel PX3 both overlap with two identical first light-shielding strips BM11, and the second sub-pixel PX2 and the third sub-pixel PX3 both overlap with four identical first light-shielding strips BM11.

[0102] In some embodiments, as shown in Figure 2 or Figure 3a, in the orthographic projection on the substrate BP, the first light-shielding strips BM11 that overlap with each other on the two adjacent sub-pixels PX can be interconnected (as shown in Figure 2 or Figure 3a), or they can be disconnected from each other on the two adjacent sub-pixels PX.

[0103] For example, as shown in Figure 2a, in the orthographic projection on the substrate BP, the first light-shielding strip BM11 that overlaps with the first sub-pixel PX1 and the first light-shielding strip BM11 that overlaps with the second sub-pixel PX2 are interconnected (as shown in Figure 2a), or they can be disconnected from each other between the first sub-pixel PX1 and the second sub-pixel PX2.

[0104] For example, as shown in Figure 3a, in the orthographic projection on the substrate BP, the first light-shielding strip BM11 that overlaps with the first sub-pixel PX1 and the first light-shielding strip BM11 that overlaps with the third sub-pixel PX3 are interconnected (as shown in Figure 3a), or they can be disconnected from each other between the first sub-pixel PX1 and the third sub-pixel PX3.

[0105] For example, as shown in Figure 3a, in the orthographic projection on the substrate BP, the first light-shielding strip BM11 that overlaps with the second sub-pixel PX2 and the first light-shielding strip BM11 that overlaps with the third sub-pixel PX3 are interconnected (as shown in Figure 3a), or they can be disconnected from each other between the second sub-pixel PX2 and the third sub-pixel PX3.

[0106] In some embodiments, as shown in FIG2 or FIG3a, in the orthographic projection on the substrate BP, multiple first light-shielding strips BM11 located in the same first privacy pixel unit P1 are arranged at equal intervals in the first direction f1. This can improve the uniformity of the viewing angle.

[0107] For example, in Figure 2a, multiple first light-shielding strips BM11 located in the same first privacy pixel unit P1 are arranged at equal intervals in the row direction fh. In Figure 3a, multiple first light-shielding strips BM11 located in the same first privacy pixel unit P1 are arranged at equal intervals in the column direction fv.

[0108] In some implementations, as shown in Figure 2a, the width of the first light-shielding strip BM11 located between two adjacent sub-pixels PX along the first direction f1 is greater than or equal to the width of the first light-shielding strip BM11 located between two adjacent first micro-pixels PW1 in the same sub-pixel PX along the first direction f1.

[0109] Since multiple first micropixels PW1 located in the same sub-pixel PX emit the same color, while the emission colors of two adjacent sub-pixels PX may be different, setting a first light-shielding strip BM11 with a larger width between two adjacent sub-pixels PX helps to prevent color mixing.

[0110] For example, in Figure 2a, the width of the first light-shielding strip BM11 located between the first sub-pixel PX1 and the third sub-pixel PX3 along the first direction f1 (i.e., the row direction fh in Figure 2) is greater than the width of the first light-shielding strip BM11 between two adjacent first micro-pixels PW1 belonging to the same first sub-pixel PX1 (or the second sub-pixel PX2 or the third sub-pixel PX3) along the first direction f1 (i.e., the row direction fh in Figure 2).

[0111] In some embodiments, as shown in FIG1, the display substrate further includes a second light-shielding layer BM2. The second light-shielding layer BM2 is disposed on the side of the first light-shielding layer BM1 away from the light-emitting substrate 11, and includes a plurality of second openings H2 that are separated from each other. In the orthographic projection on the substrate BP, the second openings H2 and the pixel openings H0 overlap one-to-one.

[0112] To improve light extraction efficiency, for example, as shown in FIG1, the second opening H2 located in the shared pixel unit P0 covers the corresponding sub-pixel opening H00, and the second opening H2 located in the first privacy pixel unit P1 covers the corresponding first micro-pixel opening H01.

[0113] As shown in Figure 2 or Figure 3c, the orthogonal projection boundary of the second opening H2 on the substrate BP includes: two first boundaries BJ1 disposed opposite to each other along the first direction f1, and two second boundaries BJ2 disposed opposite to each other along the second direction f2.

[0114] In some embodiments, as shown in Figure 2 or Figure 3c, in the orthographic projection on the substrate BP, the first boundary BJ1 is recessed by a first distance d1 relative to the boundary with the first micropixel opening H01 towards the side away from the first micropixel opening H01, and the second boundary BJ2 is recessed by a second distance d2 relative to the boundary with the first micropixel opening H01 towards the side away from the first micropixel opening H01, wherein the first distance d1 is smaller than the second distance d2.

[0115] Wherein, the first distance d1 is the distance between the first micropixel opening H01 and the first boundary BJ1. The second distance d2 is the distance between the first micropixel opening H01 and the second boundary BJ2.

[0116] For example, in Figure 2, the first direction f1 is the row direction fh, the second direction f2 is the column direction fv, the left and right boundaries of the second opening H2 are the first boundary BJ1, and the top and bottom boundaries are the second boundary BJ2. By setting the indentation of the left and right boundaries relative to the boundary of the first micro-pixel opening H01 (i.e., the first distance d1) to be less than the indentation of the top and bottom boundaries relative to the boundary of the first micro-pixel opening H01 (i.e., the second distance d2), the second light-shielding layer BM2 can block more of the large-view light in the row direction fh and block less of the large-view light in the column direction fv. This reduces the viewing angle of the first micro-pixel PW1 in the row direction fh, thereby reducing the viewing angle of the first anti-spy pixel unit P1 in the row direction fh and achieving an anti-spy effect in the row direction fh.

[0117] For example, in Figure 3, the first direction f1 is the column direction fv, the second direction f2 is the row direction fh, the upper and lower boundaries of the second opening H2 are the first boundary BJ1, and the left and right boundaries are the second boundary BJ2. By setting the indentation of the upper and lower boundaries relative to the boundary of the first micro-pixel opening H01 (i.e., the first distance d1) to be less than the indentation of the left and right boundaries relative to the boundary of the first micro-pixel opening H01 (i.e., the second distance d2), the second light-shielding layer BM2 can block more of the large-view light in the column direction fv and block less of the large-view light in the row direction fh. This reduces the viewing angle of the first micro-pixel PW1 in the column direction fv, thereby reducing the viewing angle of the first anti-spy pixel unit P1 in the column direction fv, and achieving the anti-spy effect in the column direction fv.

[0118] Therefore, by setting the first distance d1 to be less than the second distance d2, the second light-shielding layer BM2 can block more of the wide-angle light in the first direction f1 and block less of the wide-angle light in the second direction f2, thereby reducing the viewing angle of the first micro-pixel PW1 in the first direction f1, and further reducing the viewing angle of the first anti-spy pixel unit P1 in the first direction f1, thus achieving the anti-spy effect in the first direction f1.

[0119] In some embodiments, as shown in Figure 2 or Figure 3c, in the orthographic projection of the second opening H2 onto the substrate BP, the first boundary BJ1 is recessed by a third distance d3 relative to the boundary of the sub-pixel opening H00 toward the side away from the sub-pixel opening H00, and the second boundary BJ2 is recessed by a fourth distance d4 relative to the boundary of the sub-pixel opening H00 toward the side away from the sub-pixel opening H00. The third distance d3, the fourth distance d4, and the second distance d2 are approximately equal.

[0120] Wherein, the third distance d3 is the distance between the sub-pixel opening H00 and the first boundary BJ1, which is the boundary closest to the first boundary BJ1. The fourth distance d4 is the distance between the sub-pixel opening H00 and the second boundary BJ2, which is the boundary closest to the second boundary BJ2.

[0121] For example, in Figure 2c, the first direction f1 is the row direction fh, the second direction f2 is the column direction fv, the left and right boundaries of the second opening H2 are the first boundary BJ1, and the top and bottom boundaries are the second boundary BJ2. By setting the indentation of the left and right boundaries relative to the boundary of the sub-pixel opening H00 (i.e., the third distance d3) and the indentation of the top and bottom boundaries relative to the boundary of the sub-pixel opening H00 (i.e., the fourth distance d4) to be equal to the second distance d2, the second light-shielding layer BM2 can block large-view light rays in both the row direction fh and the column direction fv with less obstruction. Therefore, the shared pixel unit P0 has a large viewing angle in both the row direction fh and the column direction fv, thereby achieving the sharing effect in both the row direction fh and the column direction fv.

[0122] For example, in Figure 3c, the first direction f1 is the column direction fv, the second direction f2 is the row direction fh, the upper and lower boundaries of the second opening H2 are the first boundary BJ1, and the left and right boundaries are the second boundary BJ2. By setting the indentation of the upper and lower boundaries relative to the boundary of the sub-pixel opening H00 (i.e., the third distance d3) and the indentation of the left and right boundaries relative to the boundary of the sub-pixel opening H00 (i.e., the fourth distance d4) to be equal to the second distance d2, the second light-shielding layer BM2 can block large-view light rays in both the row direction fh and the column direction fv with less obstruction. Therefore, the shared pixel unit P0 has a large viewing angle in both the row direction fh and the column direction fv, thereby achieving the sharing effect in both the row direction fh and the column direction fv.

[0123] Therefore, by setting the third distance d3, the fourth distance d4, and the second distance d2 to be approximately equal, the second light-shielding layer BM2 can block large-view light rays in both the first direction f1 and the second direction f2 with less obstruction. As a result, the shared pixel unit P0 has a large viewing angle in both the first direction f1 and the second direction f2, thereby achieving a sharing effect in both the first direction f1 and the second direction f2.

[0124] In some implementations, the first distance d1 is greater than or equal to 0 micrometers and less than or equal to 2 micrometers or 1 micrometer. In Figure 2 or Figure 3, the first distance d1 is 0 micrometers. This allows the second light-shielding layer BM2 to block more of the wide-angle light in the first direction f1, thereby reducing the viewing angle of the first micropixel PW1 in the first direction f1 and achieving a privacy protection effect in the first direction f1.

[0125] In some implementations, the second distance d2 is greater than or equal to 3 micrometers and less than or equal to 6 micrometers. This allows the second light-shielding layer BM2 to block more light rays with a wide viewing angle in the second direction f2, thereby achieving the sharing effect of the first micropixel PW1 in the second direction f2.

[0126] In some implementations, the third distance d3 is greater than or equal to 3 micrometers and less than or equal to 6 micrometers. This allows the second light-shielding layer BM2 to block light rays with minimal obstruction in the first direction f1, thus ensuring that the shared pixel units P0 all have a large viewing angle in the first direction f1, thereby achieving a sharing effect in the first direction f1.

[0127] In some implementations, the fourth distance d4 is greater than or equal to 3 micrometers and less than or equal to 6 micrometers. This allows the second light-shielding layer BM2 to block light rays with minimal obstruction in the second direction f2, thus ensuring that the shared pixel unit P0 has a large viewing angle in the second direction f2, thereby achieving a sharing effect in the second direction f2.

[0128] In some embodiments, as shown in FIG4, the plurality of pixel units P further includes a second privacy pixel unit P2, wherein the viewing angle of the second privacy pixel unit P2 in the first direction f1 is smaller than the viewing angle of the shared pixel unit P0 in the first direction f1, and the viewing angle of the second privacy pixel unit P2 in the second direction f2 is smaller than the viewing angle of the shared pixel unit P0 in the second direction f2.

[0129] During the process of driving the display substrate to display, it can freely switch between the first privacy mode, the second privacy mode and the sharing mode as needed, thereby realizing the active privacy function.

[0130] For example, in the second privacy mode, the second privacy pixel unit P2 is controlled to emit light, while the shared pixel unit P0 and the first privacy pixel unit P1 are controlled not to emit light. Since the viewing angles of the second privacy pixel unit P2 in both the first direction f1 and the second direction f2 are smaller than those of the shared pixel unit P0, the display substrate has smaller viewing angles in both directions f1 and f2 in the second privacy mode. This achieves a privacy effect in both directions f1 and f2, meaning that the display content cannot be seen on either side of the display substrate opposite to each other along the first direction f1 and the second direction f2. Therefore, the second privacy mode is a circumferential privacy mode.

[0131] In some implementations, the viewing angle of the second privacy pixel unit P2 in the first direction f1 can be equal to the viewing angle of the second privacy pixel unit P2 in the second direction f2.

[0132] In some implementations, as shown in FIG4, the sub-pixel PX in the second privacy pixel unit P2 is divided into a plurality of second micropixels PW2 that are separated from each other. The plurality of second micropixels PW2 located in the same sub-pixel PX emit the same color and are arranged in an array along the first direction f1 and / or the second direction f2.

[0133] By setting multiple second micropixels PW2 located in the same subpixel PX to emit the same color and to be arranged in an array along the first direction f1 and the second direction f2, it is also beneficial to achieve privacy protection in both the first direction f1 and the second direction f2.

[0134] For example, in Figure 4, multiple second micropixels PW2 located in the first sub-pixel PX1 emit the same color and are arranged in a 2x3 array. Multiple second micropixels PW2 located in the second sub-pixel PX2 emit the same color and are arranged in a 4x3 array. Multiple second micropixels PW2 located in the third sub-pixel PX3 emit the same color and are arranged in a 6x3 array.

[0135] It should be noted that the number of second micropixels PW2 contained in a subpixel PX can be greater than or equal to 2 and less than or equal to 100, and this disclosure does not limit this.

[0136] In some implementations, the anodes of multiple second micropixels PW2 located in the same sub-pixel PX are interconnected, while the anodes of multiple second micropixels PW2 located in different sub-pixels PX are separated from each other.

[0137] In some embodiments, as shown in FIG4, the plurality of pixel openings H0 further include a plurality of second micropixel openings H02, and different second micropixel openings H02 are located in different second micropixels PW2 in the second privacy pixel unit P2.

[0138] As shown in Figure 4, within the second privacy pixel unit P2, a second micropixel opening H02 is provided within a second micropixel PW2.

[0139] In some embodiments, as shown in Figure 4a, the first light-shielding layer BM1 further includes a plurality of first openings H1 located in the second privacy pixel unit P2 and separated from each other. In the orthographic projection on the substrate BP, the first openings H1 and the second micro-pixel openings H02 overlap one-to-one, and the boundaries of the first openings H1 and the boundaries of the second micro-pixel openings H02 are approximately coincident.

[0140] For example, the orthographic projections of the first opening H1 and the second micro-pixel opening H02 on the substrate BP completely overlap. In this way, the first light-shielding layer BM1 can block a significant amount of light from the wide viewing angles in both the first direction f1 and the second direction f2. Therefore, the second privacy pixel unit P2 has a smaller viewing angle in both the first direction f1 and the second direction f2, thereby achieving a privacy effect in both directions f1 and f2.

[0141] In order to improve light extraction efficiency, in some embodiments, as shown in Figure 4c, the second opening H2 located in the second privacy pixel unit P2 covers the corresponding second micro-pixel opening H02.

[0142] In some embodiments, as shown in Figure 4c, in the orthographic projection on the substrate BP, the first boundary BJ1 is recessed by a fifth distance d5 relative to the boundary with the second micropixel opening H02 toward the side away from the second micropixel opening H02, and the second boundary BJ2 is recessed by a sixth distance d6 relative to the boundary with the second micropixel opening H02 toward the side away from the second micropixel opening H02. The fifth distance d5 and the sixth distance d6 are approximately equal and smaller than the third distance d3 and the fourth distance d4.

[0143] Wherein, the fifth distance d5 is the distance between the second micropixel opening H02 and the first boundary BJ1, which is near the boundary of the second micropixel opening H02. The sixth distance d6 is the distance between the second micropixel opening H02 and the second boundary BJ2, which is near the boundary of the second boundary BJ2.

[0144] In this way, the second light-shielding layer BM2 can block more of the wide-angle light in the second privacy pixel unit P2, so that the second privacy pixel unit P2 has a smaller angle of view in both the first direction f1 and the second direction f2, thereby achieving the privacy effect in both the first direction f1 and the second direction f2.

[0145] In some implementations, the fifth distance d5 and the sixth distance d6 are both greater than or equal to 0 micrometers and less than or equal to 2 micrometers or 1 micrometer.

[0146] In some embodiments, as shown in FIG4, the orthographic projection shape of the second micropixel opening H02 on the substrate BP is a square (as shown in FIG4), but it can also be a rectangle, parallelogram, rhombus, pentagon or hexagon, etc.

[0147] In some embodiments, as shown in Figures 1, 5, or 6, the display substrate further includes: an optical lens layer OC1 disposed between the light-emitting substrate 11 and the second light-shielding layer BM2, comprising a plurality of optical lenses LJ, wherein the optical lens layer OC1 and the orthographic projection of the shared pixel unit P0 on the substrate BP do not overlap; and a planarization layer OC2 disposed between the optical lens layer OC1 and the second light-shielding layer BM2, wherein the refractive index of the planarization layer OC2 is less than the refractive index of the optical lens layer OC1, and the contact interface between the planarization layer OC2 and the optical lenses LJ is used to refract the light emitted by the light-emitting device so that the refracted light is deflected toward the side closer to the normal direction of the substrate BP.

[0148] In this way, by setting up the optical lens LJ and the planarization layer OC2, the emitted light can be focused towards the center, thereby improving the front light output rate.

[0149] As shown in Figure 1, Figure 5, or Figure 6, the orthographic projection of the planarization layer OC2 onto the substrate BP completely covers the substrate BP.

[0150] In order to improve the light extraction efficiency of the display substrate, in some embodiments, the transmittance of the planarization layer OC2 is greater than or equal to 90%.

[0151] In order to reduce the reflectivity of the display substrate, in some embodiments, the transmittance of the planarization layer OC2 is greater than or equal to 50% and less than or equal to 90%.

[0152] In some embodiments, the difference between the refractive index of the optical lens layer OC1 and the refractive index of the planarization layer OC2 is greater than or equal to 0.05.

[0153] In some embodiments, as shown in FIG1 or FIG5, an optical lens layer OC1 and a planarization layer OC2 are stacked between a first light-shielding layer BM1 and a second light-shielding layer BM2. In the orthographic projection on the substrate BP, the optical lens LJ overlaps with the pixel opening H0 located outside the shared pixel unit P0, and one pixel opening H0 overlaps with one (as shown in FIG1 and FIG5a) or more (as shown in FIG5b and c) optical lenses LJ.

[0154] As shown in Figure 1 or Figure 5, the optical lens layer OC1 is disposed on the same layer as the first light-shielding layer BM1, and the optical lens LJ is located at the opening of the first light-shielding layer BM1, that is, between adjacent first light-shielding layers BM1.

[0155] In some embodiments, as shown in FIG6, the optical lens layer OC1 and the planarization layer OC2 are stacked between the light-emitting substrate 11 and the first light-shielding layer BM1, and the orthogonal projection of the optical lens LJ on the substrate BP is located within the orthogonal projection range of the pixel defining layer PDL on the substrate BP.

[0156] In some embodiments, as shown in Figure 1, the angle between the contact interface and the plane containing the substrate BP is an acute angle, and the opening of the acute angle faces the pixel opening H0. In this way, the incident light can be deflected towards the front after being refracted by the contact section, thereby improving the front light extraction efficiency.

[0157] In some embodiments, as shown in Figures 1, 5, or 6, the longitudinal cross-sectional shape of the optical lens LJ is trapezoidal, arc-shaped, or triangular, and the longitudinal cross-section is parallel to the first direction f1 and the normal direction of the light-emitting substrate 11.

[0158] To more clearly illustrate the projection relationship between different film layers, Figures 2 to 4 only show planar views of some film layers. In Figures 2 to 4, Figure a is a planar structural schematic diagram of the stacked structure composed of the light-emitting substrate 11 and the first light-shielding layer BM1, Figure b is a planar structural schematic diagram of the stacked structure composed of the light-emitting substrate 11, the first light-shielding layer BM1, the optical lens layer OC1, and the planarization layer OC2, and Figure c is a planar structural schematic diagram of the stacked structure composed of the light-emitting substrate 11 and the second light-shielding layer BM2.

[0159] As shown in Figure 2 or Figure 3b, the orthographic projection of the optical lens LJ in the optical lens layer OC1 onto the substrate BP corresponds to and overlaps with the orthographic projection of the first micropixel opening H01 onto the substrate BP, and the boundary of the orthographic projection of the optical lens LJ onto the substrate BP is located within the boundary of the orthographic projection of the first micropixel opening H01 onto the substrate BP.

[0160] As shown in Figure 4b, the orthographic projection of the optical lens LJ in the optical lens layer OC1 onto the substrate BP corresponds to and overlaps with the orthographic projection of the second micropixel opening H02 onto the substrate BP. Moreover, the boundary of the orthographic projection of the optical lens LJ onto the substrate BP is within the boundary of the orthographic projection of the second micropixel opening H02 onto the substrate BP.

[0161] For example, as shown in Figure 2 or Figure 3b, the optical lens LJ located in the first privacy pixel unit P1 and the first micropixel opening H01 have the same orthographic projection shape on the substrate BP, for example, both are elongated strips, and the extension direction of the elongated strips is the same as the extension direction of the first light-shielding strip BM11.

[0162] For example, as shown in Figure 4b, the optical lens LJ located in the second privacy pixel unit P2 and the second micropixel opening H02 have the same orthographic projection shape on the substrate BP, for example, both are squares, and the two sides of the square extend in the first direction f1 and the second direction f2, respectively.

[0163] To ensure full contact between the optical lens LJ and the planarization layer OC2, as shown in Figure 1, Figure 2, Figure 3 or Figure 4b, the optical lens LJ positioned near the first light-shielding layer BM1 is separated from the first light-shielding layer BM1, that is, a gap is left between the optical lens LJ positioned near the first light-shielding layer BM1 and the first light-shielding layer BM1, which can increase the area of ​​the contact interface.

[0164] For example, as shown in Figure 1, Figure 2, Figure 3 or Figure 4b, the gap between the optical lens LJ disposed near the first light-shielding layer BM1 and the first light-shielding layer BM1 is greater than or equal to 0.5 micrometers and less than or equal to 2 micrometers.

[0165] In some implementations, the light-emitting device may be, for example, an organic light-emitting diode (OLED), a quantum dot light-emitting diode (QLED), a mini light-emitting diode (Mini LED), or a micro light-emitting diode (Micro LED), etc.

[0166] In some embodiments, as shown in FIG1, the light-emitting substrate 11 further includes a light-emitting layer EL, which is disposed on the side of the pixel defining layer PDL facing away from the substrate BP, and includes a plurality of light-emitting patterns ELR / ELG / ELB located at different pixel openings H0. For example, the plurality of light-emitting patterns ELR / ELG / ELB includes a red light-emitting pattern ELR located in a red sub-pixel, a green light-emitting pattern ELG located in a green sub-pixel, and a blue light-emitting pattern ELB located in a blue sub-pixel.

[0167] In some embodiments, as shown in FIG1, the display substrate further includes an encapsulation layer EN disposed between the light-emitting layer EL and the first light-shielding layer BM1. The encapsulation layer EN may include, for example, an inorganic layer, an organic layer, and an inorganic layer stacked sequentially.

[0168] In some embodiments, an anode may be disposed between the light-emitting pattern ELR / ELG / ELB and the driving substrate, and a cathode may be disposed between the light-emitting pattern ELR / ELG / ELB and the encapsulation layer EN. The light-emitting device may include, for example, a stacked anode, a light-emitting pattern ELR / ELG / ELB, and a cathode.

[0169] In some embodiments, as shown in FIG1, the display substrate further includes a touch layer FMLOC, disposed between the encapsulation layer EN and the first light-shielding layer BM1, the touch layer FMLOC being used to realize the touch function of the display substrate.

[0170] In some embodiments, as shown in FIG1, the display substrate further includes a color resist layer CF disposed on the side of the second light-shielding layer BM2 facing away from the substrate BP, comprising a plurality of color resist patterns CFR / CFG / CFB located at different second openings H2. The plurality of color resist patterns CFR / CFG / CFB may include, for example, a red color resist pattern CFR located in a red sub-pixel, a green color resist pattern CFG located in a green sub-pixel, and a blue color resist pattern CFB located in a blue sub-pixel.

[0171] In some embodiments, as shown in FIG1, the display substrate further includes a protective layer OC3, which is disposed on the side of the color resist layer CF and the second light-shielding layer BM2 away from the substrate BP. The protective layer OC3 serves to protect the display substrate and planarize the surface.

[0172] In a specific implementation, the multiple pixel units P of the display unit UT include at least one shared pixel unit P0 and at least one first privacy pixel unit P1, and may also include a second privacy pixel unit P2. The number of pixel units P contained in a display unit UT can be two, three, four or more.

[0173] In some implementations, as shown in FIG2 or FIG3, the plurality of pixel units P of the display unit UT includes a shared pixel unit P0 and a first privacy pixel unit P1.

[0174] In some implementations, as shown in any of Figures 7 to 10, the display unit UT includes four pixel units P located within a virtual quadrilateral. The virtual quadrilateral is, for example, a rectangle, a square, a parallelogram, a rhombus, etc.

[0175] It should be noted that Figures 7 to 10 show schematic diagrams of the planar structure of the stacked structure formed by the light-emitting substrate 11 and the first light-shielding layer BM1.

[0176] In some implementations, as shown in FIG7, the four pixel units P located in the virtual quadrilateral include: two shared pixel units P0 and two first privacy pixel units P1. The two shared pixel units P0 are arranged along one diagonal of the virtual quadrilateral, and the two first privacy pixel units P1 are arranged along the other diagonal of the virtual quadrilateral. The two first privacy pixel units P1 are either two row-oriented privacy pixel units P1H, or two column-oriented privacy pixel units P1V, or one row-oriented privacy pixel unit P1H and one column-oriented privacy pixel unit P1V.

[0177] When the two first privacy pixel units P1 are two row-oriented privacy pixel units P1H, they can be freely switched between row-oriented privacy mode and sharing mode as needed. When the two first privacy pixel units P1 are two column-oriented privacy pixel units P1V, they can be freely switched between column-oriented privacy mode and sharing mode as needed. When the two first privacy pixel units P1 include one row-oriented privacy pixel unit P1H and one column-oriented privacy pixel unit P1V, they can be freely switched between row-oriented privacy mode, column-oriented privacy mode, and sharing mode as needed.

[0178] In some embodiments, as shown in Figure 8 or Figure 9, the four pixel units P located in the virtual quadrilateral include: two shared pixel units P0, a first privacy pixel unit P1, and a second privacy pixel unit P2. The two shared pixel units P0 are arranged along one diagonal of the virtual quadrilateral, and the first privacy pixel unit P1 and the second privacy pixel unit P2 are arranged along the other diagonal of the virtual quadrilateral. The first privacy pixel unit P1 is either a row-oriented privacy pixel unit P1H (as shown in Figure 8) or a column-oriented privacy pixel unit P1V (as shown in Figure 9). The viewing angle of the second privacy pixel unit P2 in any direction is smaller than that of the shared pixel unit P0 in that direction.

[0179] When the first privacy pixel unit P1 is a row-oriented privacy pixel unit P1H, as shown in Figure 8, it can freely switch between row-oriented privacy mode, perimeter privacy mode, and sharing mode as needed. When the first privacy pixel unit P1 is a column-oriented privacy pixel unit P1V, as shown in Figure 9, it can freely switch between column-oriented privacy mode, perimeter privacy mode, and sharing mode as needed.

[0180] In some embodiments, as shown in FIG10, the four pixel units P located in the virtual quadrilateral include: a shared pixel unit P0, two first privacy pixel units P1, and a second privacy pixel unit P2. The shared pixel unit P0 and the second privacy pixel unit P2 are arranged along one diagonal of the virtual quadrilateral, and the two first privacy pixel units P1 are arranged along the other diagonal of the virtual quadrilateral. The two first privacy pixel units P1 include a row-oriented privacy pixel unit P1H and a column-oriented privacy pixel unit P1V. The viewing angle of the second privacy pixel unit P2 in any direction is smaller than that of the shared pixel unit P0 in that direction.

[0181] This implementation allows for free switching between row-oriented privacy mode, column-oriented privacy mode, perimeter privacy mode, and sharing mode as needed.

[0182] This disclosure provides a display device, including: a display substrate as provided in any embodiment; and a driving component connected to the display substrate for driving the display substrate to emit light.

[0183] Those skilled in the art will understand that the display device provided in this disclosure has the advantages of the aforementioned display substrate.

[0184] The display device disclosed herein can be any product or component with display function, such as a display module, mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, in-vehicle display device, smartwatch, fitness wristband, personal digital assistant, etc.

[0185] This disclosure provides a driving method for a display substrate, applied to a display substrate as described in any embodiment, the driving method comprising:

[0186] Step S01: In the first privacy mode, control the first privacy pixel unit P1 to emit light and control the shared pixel unit P0 to not emit light, so as to produce a privacy display effect in the first direction f1.

[0187] Step S02: In the sharing mode, control the shared pixel unit P0 to emit light, and control the first privacy pixel unit P1 to emit light or not emit light, so as to produce a shared display effect in the first direction f1 and the second direction f2.

[0188] Specifically, when the first direction f1 is the row direction fh and the second direction f2 is the column direction fv, the first privacy mode is the row-oriented privacy mode. When the first direction f1 is the column direction fv and the second direction f2 is the row direction fh, the first privacy mode is the column-oriented privacy mode.

[0189] In some embodiments, the plurality of pixel units P further includes a second privacy pixel unit P2, wherein the viewing angle of the second privacy pixel unit P2 in any direction is smaller than the viewing angle of the shared pixel unit P0 in that direction, and the driving method further includes:

[0190] Step S03: In the second privacy mode, control the second privacy pixel unit P2 to emit light, and control the shared pixel unit P0 and the first privacy pixel unit P1 to not emit light, so as to produce a privacy effect in the first direction f1 and the second direction f2, that is, to realize the circumferential privacy mode.

[0191] The execution process of each step can be found in the descriptions of various implementations of the display substrate, and will not be repeated here.

[0192] In this disclosure, "multiple" means two or more, and "at least one" means one or more, unless otherwise expressly and specifically defined.

[0193] In this disclosure, the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this disclosure.

[0194] In this document, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0195] The terms "an embodiment," "some embodiments," "exemplary embodiments," "one or more embodiments," "example," "one example," "some examples," etc., used herein are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be included in any suitable manner in any one or more embodiments or examples.

[0196] In this document, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between these entities or operations.

[0197] In describing some embodiments, the terms "coupled" and "connected" may be used. For example, the term "connected" may be used in describing some embodiments to indicate that two or more components have direct physical or electrical contact with each other. Similarly, the term "coupled" may be used in describing some embodiments to indicate that two or more components have direct physical or electrical contact. However, the terms "coupled" or "communicatively coupled" may also refer to two or more components that do not have direct contact with each other but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the content of this document.

[0198] "At least one of A, B and C" has the same meaning as "at least one of A, B or C", both including the following combinations of A, B and C: only A, only B, only C, combinations of A and B, combinations of A and C, combinations of B and C, and combinations of A, B and C.

[0199] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0200] As used herein, depending on the context, the term “if” may optionally be interpreted as meaning “when”, “in the event of”, “in response to determination”, or “in response to detection”. Similarly, depending on the context, the phrase “if it is determined that…” or “if [the stated condition or event] is detected” may optionally be interpreted as meaning “in the event of determination that…”, “in response to determination that…”, “when [the stated condition or event] is detected”, or “in response to the detection of [the stated condition or event]”.

[0201] The use of “for” or “configured to” in this article implies an open and inclusive language that does not preclude the applicability to or configuration of devices to perform additional tasks or steps.

[0202] The use of "based on" or "according to" in this document implies openness and inclusiveness. A process, step, calculation, or other action based on one or more of the stated conditions or values ​​may, in practice, be based on other conditions or values ​​beyond those stated.

[0203] As used herein, “about,” “approximately,” or “approximately” includes the stated value and the average value within an acceptable range of deviation from the given value, wherein the acceptable range of deviation is determined by a person skilled in the art taking into account the measurement under discussion and the error associated with the measurement of the given quantity (i.e., the limitations of the measurement system).

[0204] As used herein, “parallel,” “perpendicular,” “equal,” and “flush” 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 the acceptable range of deviation for approximate parallelism can be, for example, within 5°; “perpendicular” includes absolute perpendicularity and approximate perpendicularity, where the acceptable range of deviation for approximate perpendicularity can also be, for example, within 5°. “Equal” includes absolute equality and approximate equality, where the acceptable range of deviation for approximate equality can be, for example, the difference between the two equals being less than or equal to 5% of either one. “Flush” includes absolute flush and approximate flush, where the acceptable range of deviation for approximate flush can be, for example, the distance between the flush twos being less than or equal to 5% of either one of the dimensions.

[0205] 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.

[0206] This document describes exemplary embodiments with reference to cross-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. Thus, 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. For example, etched regions shown as rectangular would typically have curved features. Therefore, 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.

[0207] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit them. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this disclosure.

Claims

1. A display substrate comprising a plurality of display units, wherein the display units include: Multiple pixel units are arrayed along a row direction and / or a column direction. The multiple pixel units include a shared pixel unit and a first privacy pixel unit. The viewing angle of the first privacy pixel unit in a first direction is smaller than that of the shared pixel unit in the first direction, and the viewing angle of the first privacy pixel unit in the first direction is smaller than that of the first privacy pixel unit in a second direction. The first direction and the second direction intersect each other.

2. The display substrate according to claim 1, wherein, The pixel unit includes multiple sub-pixels, and at least two sub-pixels emit different colors. The sub-pixels in the first privacy pixel unit are divided into multiple first micro-pixels that are separated from each other. The multiple first micro-pixels located in the same sub-pixel emit the same color and are arranged along the first direction.

3. The display substrate according to claim 2, wherein, The display substrate includes: A light-emitting substrate, the light-emitting substrate including a substrate and a pixel defining layer disposed on one side of the substrate, the pixel defining layer defining a plurality of pixel openings, the pixel openings being used to dispose of light-emitting devices, the plurality of pixel openings including sub-pixel openings and first micro-pixel openings, different sub-pixel openings being located in different sub-pixels in the shared pixel unit, and different first micro-pixel openings being located in different first micro-pixels in the first privacy pixel unit; A first light-shielding layer, disposed on the light-emitting side of the light-emitting substrate, includes: a plurality of first light-shielding strips located at intervals along the first direction and situated at the first privacy pixel unit; the first light-shielding strips extend along the second direction; and the orthographic projection of the first light-shielding strips onto the substrate is located on opposite sides of the first micro-pixel opening in the first direction; and The second light-shielding layer is disposed on the side of the first light-shielding layer away from the light-emitting substrate, and includes a plurality of second openings that are separated from each other. In the orthographic projection on the substrate, the second openings overlap with the pixel openings one by one.

4. The display substrate according to claim 3, wherein, In the orthographic projection on the substrate, the distance between the boundary of the first light-shielding strip near the first micro-pixel opening and the boundary of the first micro-pixel opening near the first light-shielding strip is less than or equal to 0.5 micrometers.

5. The display substrate according to claim 3, wherein, The light-shielding area of ​​the first light-shielding layer does not overlap with the shared pixel unit when projected onto the substrate.

6. The display substrate according to claim 3, wherein, Multiple sub-pixels located in the same pixel unit include a first sub-pixel, a second sub-pixel, and a third sub-pixel that emit different colors; In the orthographic projection on the substrate, the first sub-pixel and the second sub-pixel, the first sub-pixel and the third sub-pixel, or the second sub-pixel and the third sub-pixel in the same first privacy pixel unit overlap with at least one identical first light-shielding strip.

7. The display substrate according to claim 3, wherein, The orthographic projection boundary of the second opening on the substrate includes: two first boundaries disposed opposite to each other along the first direction, and two second boundaries disposed opposite to each other along the second direction; In the orthographic projection on the substrate, the first boundary is recessed by a first distance relative to the boundary of the first micropixel opening toward the side away from the first micropixel opening, and the second boundary is recessed by a second distance relative to the boundary of the first micropixel opening toward the side away from the first micropixel opening, wherein the first distance is less than the second distance.

8. The display substrate according to claim 7, wherein, In the orthographic projection of the second opening onto the substrate, the first boundary is recessed by a third distance relative to the boundary of the sub-pixel opening toward the side away from the sub-pixel opening, and the second boundary is recessed by a fourth distance relative to the boundary of the sub-pixel opening toward the side away from the sub-pixel opening, wherein the third distance, the fourth distance, and the second distance are approximately equal.

9. The display substrate according to claim 3, wherein, The plurality of pixel units further includes a second privacy pixel unit, wherein the viewing angle of the second privacy pixel unit in the first direction is smaller than the viewing angle of the shared pixel unit in the first direction, and the viewing angle of the second privacy pixel unit in the second direction is smaller than the viewing angle of the shared pixel unit in the second direction; The sub-pixels in the second privacy pixel unit are divided into multiple second micro-pixels that are separated from each other. The multiple second micro-pixels located in the same sub-pixel emit the same color and are arranged in an array along the first direction and / or the second direction.

10. The display substrate according to claim 9, wherein, The plurality of pixel openings also include a plurality of second micropixel openings, with different second micropixel openings located in different second micropixels within the second privacy pixel unit; The first light-shielding layer further includes a plurality of first openings located in the second privacy pixel unit and separated from each other. In the orthographic projection on the substrate, the first openings and the second micro-pixel openings overlap one-to-one, and the boundaries of the first openings and the boundaries of the second micro-pixel openings approximately coincide.

11. The display substrate according to claim 10, wherein, The orthographic projection boundary of the second opening on the substrate includes: two first boundaries disposed opposite to each other along the first direction, and two second boundaries disposed opposite to each other along the second direction; In the orthographic projection on the substrate, the first boundary is recessed by a third distance relative to the boundary of the sub-pixel opening toward the side away from the sub-pixel opening, and the second boundary is recessed by a fourth distance relative to the boundary of the sub-pixel opening toward the side away from the sub-pixel opening, wherein the third distance and the fourth distance are approximately equal. In the orthographic projection on the substrate, the first boundary is recessed by a fifth distance relative to the boundary of the second micropixel opening toward the side away from the second micropixel opening, and the second boundary is recessed by a sixth distance relative to the boundary of the second micropixel opening toward the side away from the second micropixel opening. The fifth distance and the sixth distance are approximately equal and smaller than the third distance and the fourth distance.

12. The display substrate according to claim 3, wherein, The display substrate further includes: An optical lens layer, disposed between the light-emitting substrate and the second light-shielding layer, includes a plurality of optical lenses, wherein the optical lens layer and the orthographic projection of the shared pixel unit on the substrate do not overlap; and A planarization layer is disposed between the optical lens layer and the second light-shielding layer. The refractive index of the planarization layer is less than that of the optical lens layer. The contact interface between the planarization layer and the optical lens is used to refract the light emitted by the light-emitting device so that the refracted light is deflected toward the side closer to the normal direction of the substrate.

13. The display substrate according to claim 12, wherein, The optical lens layer and the planarization layer are stacked between the first light-shielding layer and the second light-shielding layer. In the orthographic projection on the substrate, the optical lens overlaps with the pixel opening located outside the shared pixel unit, and one pixel opening overlaps with one or more of the optical lenses.

14. The display substrate according to claim 12, wherein, The optical lens layer and the planarization layer are stacked between the light-emitting substrate and the first light-shielding layer, and the orthogonal projection of the optical lens on the substrate is located within the orthogonal projection range of the pixel defining layer on the substrate.

15. The display substrate according to claim 3, wherein, The light-emitting substrate further includes: A light-emitting layer is disposed on the side of the pixel defining layer opposite to the substrate, and includes multiple light-emitting patterns located at different pixel openings; The display substrate further includes at least one of the following: An encapsulation layer is disposed between the light-emitting layer and the first light-shielding layer; A touch layer is disposed between the encapsulation layer and the first light-shielding layer; and A color resist layer is disposed on the side of the second light-shielding layer away from the substrate, and includes multiple color resist patterns located at different second openings.

16. The display substrate according to any one of claims 1 to 15, wherein, When the first direction is a row direction and the second direction is a column direction, the first privacy pixel unit is a row-oriented privacy pixel unit; or When the first direction is a column direction and the second direction is a row direction, the first privacy pixel unit is a column-oriented privacy pixel unit.

17. The display substrate according to claim 16, wherein, The display unit includes four pixel units located within a virtual quadrilateral, and the four pixel units include: The two shared pixel units and the two first privacy pixel units are arranged along one diagonal of the virtual quadrilateral, and the two first privacy pixel units are arranged along the other diagonal of the virtual quadrilateral; and The two first privacy pixel units are two row-oriented privacy pixel units, or two column-oriented privacy pixel units, or one row-oriented privacy pixel unit and one column-oriented privacy pixel unit.

18. The display substrate according to claim 16, wherein, The display unit includes four pixel units located within a virtual quadrilateral, and the four pixel units include: The virtual quadrilateral consists of two shared pixel units, a first privacy pixel unit, and a second privacy pixel unit. The two shared pixel units are arranged along one diagonal of the virtual quadrilateral, and the first privacy pixel unit and the second privacy pixel unit are arranged along the other diagonal of the virtual quadrilateral. The first privacy pixel unit is either a row-oriented privacy pixel unit or a column-oriented privacy pixel unit. The second privacy pixel unit has a smaller viewing angle in any direction than the shared pixel unit in that direction.

19. The display substrate according to claim 16, wherein, The display unit includes four pixel units located within a virtual quadrilateral, and the four pixel units include: The virtual quadrilateral comprises one shared pixel unit, two first privacy pixel units, and one second privacy pixel unit. The shared pixel unit and the second privacy pixel unit are arranged along one diagonal of the virtual quadrilateral, and the two first privacy pixel units are arranged along the other diagonal of the virtual quadrilateral. The two first privacy pixel units include one row-oriented privacy pixel unit and one column-oriented privacy pixel unit. The viewing angle of the second privacy pixel unit in any direction is smaller than that of the shared pixel unit in that direction.

20. A display device, comprising: The display substrate as described in any one of claims 1 to 19; as well as A driving component, connected to the display substrate, is used to drive the display substrate to emit light.

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