Optical substrates and display devices

Abstract

An optical substrate and a display device are disclosed, relating to the field of display technology. The optical substrate includes multiple optical rotation regions and a first light-shielding region. The first light-shielding region is located between at least two adjacent optical rotation regions. The two adjacent optical rotation regions include a first optical rotation region and a second optical rotation region. The first optical rotation region is used to convert linearly polarized light with a predetermined polarization state in incident light into left-handed polarized light, and the second optical rotation region is used to convert linearly polarized light with a predetermined polarization state in incident light into right-handed polarized light. The optical substrate includes a substrate, and multiple touch electrodes and multiple touch traces disposed on one side of the substrate. The multiple touch electrodes are separated from each other and are not connected. Each touch electrode is connected to a touch trace in a one-to-one correspondence. The touch electrodes are used to detect the touch position of a touch object on the optical substrate. Furthermore, in the orthographic projection onto the substrate, the touch electrodes overlap with the optical rotation regions, and the touch traces are located within the range of the first light-shielding region.

Description

Technical Field

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

[0002] 3D imaging is produced by the visual difference between the two eyes. There is generally a distance of about 6.5cm between the two pupils of the human eye. When both eyes look at an object at the same time, the left eye can see more of the left side of the object, and the right eye can see more of the right side of the object. Different images are formed on the left and right retinas. After the brain integrates these two different images, it can distinguish the front and back, left and right of the object, thus producing stereoscopic vision. Utility Model Content

[0003] This disclosure provides an optical substrate, which includes a plurality of optical rotation regions and a first light-shielding region. The first light-shielding region is located at least between two adjacent optical rotation regions. The two adjacent optical rotation regions include a first optical rotation region and a second optical rotation region. The first optical rotation region is used to convert linearly polarized light with a set polarization state in the incident light into left-handed polarized light, and the second optical rotation region is used to convert linearly polarized light with the set polarization state in the incident light into right-handed polarized light.

[0004] The optical substrate includes: a substrate, and a plurality of touch electrodes and a plurality of touch traces disposed on one side of the substrate. The plurality of touch electrodes are spaced apart from each other and are not connected to each other. Each touch electrode is connected to a corresponding touch trace. The touch electrodes are used to detect the touch position of the touch object on the optical substrate.

[0005] In the orthographic projection on the substrate, the touch electrode overlaps with the light-rotating region, and the touch trace is located within the range of the first light-shielding region.

[0006] In some embodiments, the touch electrode and the touch traces are disposed on different layers. In the orthographic projection on the substrate, the same touch electrode overlaps with multiple touch traces, and one of the multiple touch traces overlapping with the same touch electrode is connected to the touch electrode through a first via.

[0007] All interconnected parts of the same touch electrode are located in the same film layer.

[0008] In some embodiments, the touch electrode includes a plurality of sub-electrodes and at least one connecting portion. The plurality of sub-electrodes are arranged along the row direction and the column direction, respectively. Two sub-electrodes belonging to the same touch electrode and adjacent along the row direction are connected by the connecting portion. Two sub-electrodes arranged along the column direction and adjacent belong to different touch electrodes.

[0009] Multiple touch traces are arranged along the row direction. The touch traces are located between two sub-electrodes that belong to the same touch electrode and are adjacent along the row direction. The touch traces overlap with the orthographic projection of the connection portion on the substrate.

[0010] In some embodiments, the first light-shielding area includes a plurality of first light-shielding strips extending along the row direction and arranged at equal intervals along the column direction, the distance between two adjacent first light-shielding strips being a first spacing, and the distance between two adjacent sub-electrodes arranged along the column direction being a positive integer multiple of the first spacing.

[0011] In some embodiments, two sub-electrodes belonging to the same touch electrode and adjacent in the row direction are connected by a plurality of the connecting portions.

[0012] In some embodiments, the first light-shielding area includes a plurality of first light-shielding strips that extend along the row direction and are arranged at equal intervals along the column direction;

[0013] Multiple connecting portions belonging to the same touch electrode and arranged along the column direction include at least one of the following:

[0014] A first connecting portion, wherein the orthographic projection of the first connecting portion on the substrate lies within the range of the first light-shielding strip; and

[0015] The second connecting portion, the orthographic projection of the second connecting portion on the substrate does not overlap with the first light-shielding strip, and is located between two adjacent first light-shielding strips.

[0016] In some embodiments, the distance between two adjacent connection portions belonging to different touch electrodes along the column direction is greater than or less than the distance between two adjacent connection portions belonging to the same touch electrode along the column direction.

[0017] In some embodiments, the first light-shielding area includes a plurality of first light-shielding strips extending along the row direction and arranged at equal intervals along the column direction, wherein the distance between two adjacent first light-shielding strips is a first spacing.

[0018] The distance between two adjacent connection portions belonging to the same touch electrode and along the column direction is greater than or equal to one-tenth of the first spacing and less than or equal to ten times the first spacing.

[0019] In some embodiments, the first light-shielding area includes a plurality of first light-shielding strips extending along the row direction and arranged at equal intervals along the column direction, the plurality of first light-shielding strips including:

[0020] In the orthographic projection onto the substrate, the first sub-shielding strip is completely penetrated by the sub-electrode along the column direction, and the second sub-shielding strip is partially penetrated by the sub-electrode along the column direction. The second sub-shielding strip covers the gap between two adjacent sub-electrodes arranged along the column direction.

[0021] In the orthographic projection on the substrate, the number of connections covered by a first sub-shielding strip along the column direction is greater than or less than the number of connections covered by a second sub-shielding strip along the column direction.

[0022] In some embodiments, the touch trace includes a main extension line and at least one branch. The main extension line extends along a column direction. The at least one branch is connected to the main extension line and located on the same side of the main extension line. The connection portion overlaps with the orthographic projection of the main extension line and the branch on the substrate. The branch is connected to the sub-electrode and the connection portion respectively through the first via. The first via is disposed close to the connection portion.

[0023] In some embodiments, the plurality of touch traces include a first touch trace, wherein the main extension of the first touch trace does not overlap with the orthographic projection of the sub-electrode on the substrate.

[0024] In some embodiments, the plurality of touch traces include a second touch trace and a third touch trace. In the orthographic projection on the substrate, the second touch trace and the third touch trace are located between two sub-electrodes that belong to the same touch electrode and are adjacent in the running direction. The main extension line of the second touch trace partially overlaps with the sub-electrode near the second touch trace, and the main extension line of the third touch trace partially overlaps with the sub-electrode near the third touch trace.

[0025] In some embodiments, the touch electrode is a continuous, non-perforated structure.

[0026] In some embodiments, the first light-shielding area includes a plurality of first light-shielding strips extending along the row direction and arranged at equal intervals along the column direction, the plurality of first light-shielding strips including:

[0027] In the orthographic projection on the substrate, the first sub-light-shielding strip is completely penetrated by the touch electrode along the column direction, the second sub-light-shielding strip is partially penetrated by the touch electrode along the column direction, and the second sub-light-shielding strip covers the gap between two adjacent touch electrodes arranged along the column direction.

[0028] In some embodiments, the first light-shielding area includes a plurality of second light-shielding strips extending along the column direction and arranged at equal intervals along the row direction, the plurality of second light-shielding strips including:

[0029] In the orthographic projection on the substrate, the third sub-shielding strip covers the touch trace and the first via, and the fourth sub-shielding strip covers the gap between two adjacent touch electrodes arranged along the row direction.

[0030] In some embodiments, the optical substrate further includes:

[0031] The dummy traces are disposed on the same layer as the touch traces and are not connected to the touch electrodes. In the orthographic projection on the substrate, the dummy traces are located within the range of the fourth sub-light-shielding strip, and in the row direction, the number of touch traces that overlap with the same third sub-light-shielding strip is equal to the number of dummy traces that overlap with the same fourth sub-light-shielding strip.

[0032] In some embodiments, the number of touch traces overlapping with different touch electrodes is the same in the orthographic projection on the substrate.

[0033] In some embodiments, the plurality of touch electrodes include a first touch electrode, a second touch electrode, and a third touch electrode. In the orthographic projection on the substrate, the first touch electrode and the second touch electrode are arranged along the row direction, and the first touch electrode and the third touch electrode are arranged along the column direction. At least one touch trace overlaps with the first touch electrode and the third touch electrode, respectively.

[0034] The number of touch traces overlapping with the first touch electrode and the second touch electrode is the same, while the number of touch traces overlapping with the first touch electrode and the third touch electrode is different.

[0035] In some embodiments, the first light-shielding area includes: a plurality of first light-shielding strips extending in the row direction and arranged at equal intervals in the column direction, and a plurality of second light-shielding strips extending in the column direction and arranged at equal intervals in the row direction, wherein the first light-rotating area and the second light-rotating area are located on both sides of the first light-shielding strips and / or the second light-shielding strips.

[0036] In some embodiments, the optical substrate further includes a first frame region located on one side of the plurality of optical rotation regions;

[0037] In the orthographic projection on the substrate, a plurality of touch electrodes are arranged in an array along the row and column directions, and multiple touch traces connecting the same column of touch electrodes extend to the first frame area and are connected to the bonding area in the first frame area.

[0038] In some embodiments, the optical substrate further includes a second frame region and a third frame region, the second frame region and the third frame region being disposed opposite each other on both sides of the plurality of optical rotation regions along the column direction;

[0039] In the orthographic projection on the substrate, a plurality of touch electrodes are arranged in an array along the row and column directions. The plurality of touch electrodes in the same column are divided into a first sub-column and a second sub-column. The first sub-column includes a plurality of touch electrodes disposed near the second border area, and the second sub-column includes a plurality of touch electrodes disposed near the third border area.

[0040] Multiple touch traces connecting the first sub-column extend to the second border area and connect with the binding area in the second border area. Multiple touch traces connecting the second sub-column extend to the third border area and connect with the binding area in the third border area.

[0041] In some embodiments, the touch traces connecting the first sub-column and the touch traces connecting the second sub-column are separated from each other in the column direction, and the gap width separating them in the column direction is greater than or equal to the gap width between two adjacent touch electrodes along the column direction.

[0042] In some embodiments, the optical substrate includes:

[0043] A transparent electrode layer is disposed on one side of the substrate, and the transparent electrode layer includes a plurality of the touch electrodes;

[0044] A wiring layer is disposed on the side of the transparent electrode layer away from the substrate, and the wiring layer includes a plurality of the touch wiring lines;

[0045] A light-shielding layer is disposed on the side of the wiring layer away from the substrate, the light-shielding layer being used to form the first light-shielding area; and

[0046] A liquid crystal layer is disposed on the side of the light-shielding layer away from the substrate. The liquid crystal layer includes a plurality of optical rotation regions, and the liquid crystal molecules in the first optical rotation region and the second optical rotation region have different pretilt angles.

[0047] This disclosure provides a display device, the display device comprising:

[0048] A display panel, the display panel including a plurality of sub-pixels and a second light-shielding area, the second light-shielding area being located between at least two adjacent sub-pixels; and

[0049] As described in any embodiment, the optical substrate is disposed on the light-emitting side of the display panel, and the substrate is disposed away from the display panel. The orthographic projection of the touch electrode on the display panel overlaps with the sub-pixel, and the orthographic projection of the touch trace on the display panel is located within the range of the second light-shielding area.

[0050] In some embodiments, the first light-shielding area includes: a plurality of first light-shielding strips extending in the row direction and arranged at equal intervals in the column direction, and a plurality of second light-shielding strips extending in the column direction and arranged at equal intervals in the row direction.

[0051] The distance between two adjacent first light-shielding strips is equal to the distance between two adjacent sub-pixels along the column direction, and the distance between two adjacent second light-shielding strips is equal to a positive integer multiple of the distance between two adjacent sub-pixels along the row direction.

[0052] 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. Attached Figure Description

[0053] 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.

[0054] Figure 1 A schematic diagram illustrating the principle of a glass-based phase delayer 3D display technology is shown.

[0055] Figure 2 An exemplary schematic diagram of a planar structure of an optical substrate provided in this disclosure is shown;

[0056] Figure 3 A schematic diagram of the planar structure of the first optical substrate example provided in this disclosure is shown;

[0057] Figure 4 A schematic diagram of the planar structure of a second example of an optical substrate provided in this disclosure is shown;

[0058] Figure 5 A schematic diagram of the planar structure of the third optical substrate example provided in this disclosure is shown;

[0059] Figure 6A schematic diagram of the planar structure of the multiple touch electrodes provided in this disclosure is shown;

[0060] Figure 7 A cross-sectional structural schematic diagram of an optical substrate provided in this disclosure is shown;

[0061] Figure 8 A cross-sectional structural schematic diagram of another optical substrate provided in this disclosure is shown;

[0062] Figure 9 A schematic diagram of the planar structure of the fourth optical substrate example provided in this disclosure is shown;

[0063] Figure 10 A schematic diagram of the planar structure of the fifth optical substrate example provided in this disclosure is shown;

[0064] Figure 11 A schematic diagram of the planar structure of the multiple touch electrodes provided in this disclosure is shown;

[0065] Figure 12 A schematic diagram of the planar structure of the sixth optical substrate example provided in this disclosure is shown;

[0066] Figure 13 A schematic diagram of the planar structure of the seventh optical substrate example provided in this disclosure is shown;

[0067] Figure 14 A schematic diagram of the planar structure of the eighth optical substrate example provided in this disclosure is shown;

[0068] Figure 15 A schematic diagram of the planar structure of the ninth optical substrate example provided in this disclosure is shown;

[0069] Figure 16 A schematic diagram of the planar structure of the tenth optical substrate example provided in this disclosure is shown;

[0070] Figure 17 An exemplary schematic diagram of a display device provided in this disclosure is shown. Detailed Implementation

[0071] 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.

[0072] 3D display technology is based on the principle of binocular parallax. It artificially splits the image displayed on the screen into two images, which are then independently sent to the left and right eyes. The brain analyzes and processes these two images from different viewpoints, creating a stereoscopic scene with left-right, up-down, and front-back perspectives. In 3D display technology, polarized 3D technology is further divided into linear polarization and circular polarization. Linear polarization is prone to crosstalk, resulting in a typically smaller horizontal viewing angle; while circular polarization offers a wider horizontal viewing angle, allowing multiple people to view the image simultaneously over a larger angle range.

[0073] Currently, 3D display technology mainly adopts glass pattern retarder (GPR) 3D display technology, the principle of which is as follows: Figure 1 As shown, Figure 1 A schematic diagram of the display principle of GPR 3D display technology is shown. The GPR substrate, for example, uses the pixel rows of a display panel as units to convert linearly polarized light of the same polarization state emitted from the odd and even pixel rows of the panel into left-handed and right-handed polarized light, respectively. By wearing circularly polarized glasses, the left and right lenses can transmit left-handed and right-handed polarized light, respectively. After passing through the circularly polarized glasses, the left and right eyes can respectively identify the images of the odd and even rows on the panel, thereby achieving a 3D stereoscopic effect.

[0074] This disclosure provides an optical substrate, such as Figure 2 As shown, the optical substrate includes multiple optical rotation regions XG and a first light-shielding region BM1. The first light-shielding region BM1 is located between at least two adjacent optical rotation regions XG. The two adjacent optical rotation regions XG include a first optical rotation region XG1 and a second optical rotation region XG2. The first optical rotation region XG1 is used to convert linearly polarized light with a set polarization state in the incident light into left-handed polarized light, and the second optical rotation region XG2 is used to convert linearly polarized light with a set polarization state in the incident light into right-handed polarized light.

[0075] In some embodiments, the first optical rotation region XG1 and the second optical rotation region XG2 are located on both sides of the first light-shielding strip BM11 and / or the second light-shielding strip BM12.

[0076] For example, such as Figure 2 As shown, the first optical rotation region XG1 and the second optical rotation region XG2 are located on both sides of the first light-blocking strip BM11, and the optical rotation regions XG located on both sides of the second light-blocking strip BM12 are either the first optical rotation region XG1 or the second optical rotation region XG2.

[0077] For example, such as Figure 2As shown, the optical rotation regions XG located in the same row are either the first optical rotation region XG1 or the second optical rotation region XG2. For example, the optical rotation regions XG located in odd-numbered rows are all the first optical rotation region XG1, and the optical rotation regions XG located in even-numbered rows are all the second optical rotation region XG2. In this way, the optical substrate can convert linearly polarized light of the same polarization state emitted from the odd and even pixel rows of the display panel into left-handed and right-handed polarized light, respectively, using the pixel rows of the display panel as units. Viewers can wear circularly polarized glasses, with the left and right lenses respectively allowing the left and right lenses to transmit left-handed and right-handed polarized light. After wearing the circularly polarized glasses, the left and right eyes can respectively identify the images in the odd and even rows of the display panel, thereby achieving a 3D stereoscopic effect.

[0078] When the first optical rotation region XG1 and the second optical rotation region XG2 are located on both sides of the first light-blocking strip BM11 and the second light-blocking strip BM12, the optical rotation region XG adjacent to the first optical rotation region XG1 is the second optical rotation region XG2, and the optical rotation region XG adjacent to the second optical rotation region XG2 is the first optical rotation region XG1.

[0079] For example, the multiple optical rotation regions XG in the first row are arranged in a cyclical manner in the order of first optical rotation region XG1, second optical rotation region XG2, first optical rotation region XG1, second optical rotation region XG2...; the multiple optical rotation regions XG in the second row are arranged in a cyclical manner in the order of second optical rotation region XG2, first optical rotation region XG1, second optical rotation region XG2, first optical rotation region XG1...; the multiple optical rotation regions XG in the third row are arranged in a cyclical manner in the order of first optical rotation region XG1, second optical rotation region XG2, first optical rotation region XG1, second optical rotation region XG2...

[0080] For example, such as Figure 2 As shown, the optical substrate includes an optical region AA1, and may also include a first peripheral region ZB1 surrounding the optical region AA1. Multiple optical rotation regions XG are located, for example, within the optical region AA1. A first light-shielding region BM1 is provided, for example, in both the optical region AA1 and the first peripheral region ZB1.

[0081] refer to Figure 3 or Figure 9 The optical substrate includes: substrate 10 ( Figure 3 and Figure 9 (Not shown in the image), and a plurality of touch electrodes 20 and a plurality of touch traces TX disposed on one side of the substrate 10. The plurality of touch electrodes 20 are separated from each other and are not connected to each other. The touch electrodes 20 and the touch traces TX are connected one-to-one. The touch electrodes 20 are used to detect the touch position of the touch object on the optical substrate. In the orthographic projection on the substrate 10, the touch electrodes 20 overlap with the optical rotation region XG, and the touch traces TX are located within the range of the first light-shielding region BM1.

[0082] The optical substrate provided in this disclosure can convert linearly polarized light of the same polarization state emitted from the display panel into left-handed and right-handed polarized light, thereby realizing the GPR function. Furthermore, by providing touch electrodes 20 overlapping the optical rotation region XG in the optical substrate, and by connecting each touch electrode 20 to a touch trace TX, the touch trace TX can transmit electrical signals from the touch electrodes 20 to the touch chip. The touch chip can then determine the touch position of a touch object, such as a finger, on the optical substrate based on changes in the electrical signals from the touch electrodes 20. Therefore, the optical substrate provided in this disclosure can realize touch functionality, allowing users to perform touch operations on an optical substrate capable of achieving 3D display effects.

[0083] The touch trace TX is used to transmit electrical signals on the touch electrode 20. The touch trace TX, connected to the touch electrode 20, extends to the first peripheral region ZB1 and connects to the bonding area in the first peripheral region ZB1. The bonding area can be bonded to the touch chip, thus connecting the touch electrode 20 to the touch chip via the touch trace TX. By placing the touch trace TX within the first light-shielding region BM1, light transmission efficiency is improved.

[0084] In some embodiments, the touch electrode 20 is a self-capacitive touch electrode. For example, multiple touch electrodes 20 are disposed in the same layer, and the orthographic projections of the multiple touch electrodes 20 on the substrate 10 are separated from each other and do not overlap. In this case, the touch trace TX connected to the touch electrode 20 is at least partially located within the optical region AA1, and is covered by the first light-shielding region BM1 within the optical region AA1.

[0085] It should be noted that the touch electrode 20 can also be a mutual capacitance touch electrode. For example, multiple touch electrodes 20 include driving electrodes extending along the row direction and sensing electrodes extending along the column direction. The driving electrodes and sensing electrodes intersect each other and are connected by bridging at the intersection. In this case, the touch trace TX connected to the touch electrode 20 is located in the first peripheral region ZB1 and is covered by the first light-shielding region BM1 within the first peripheral region ZB1.

[0086] The structure of the optical substrate is described below using a self-capacitive touch electrode as an example.

[0087] In some implementations, such as Figure 4 , Figure 5 or Figure 10 As shown, the touch electrode 20 and the touch trace TX are disposed in different layers. In the orthographic projection on the substrate 10, the same touch electrode 20 overlaps with multiple touch traces TX. One of the multiple touch traces TX that overlap with the same touch electrode 20 is connected to the touch electrode 20 through the first via H1.

[0088] For each touch electrode 20, one of the multiple touch traces TX that overlap with the touch electrode 20 is connected to the touch electrode 20 through the first via H1. The other touch traces TX only pass through the touch electrode 20, but are not connected to the touch electrode 20.

[0089] In some implementations, such as Figure 6 or Figure 11 As shown, the interconnected parts of the same touch electrode 20 are located in the same film layer, that is, the touch electrode 20 is an integral structure interconnected within a film layer.

[0090] In this way, different parts of the touch electrode 20 do not need to be connected by changing layers, which can reduce the number of vias, simplify the process, reduce the load on the touch electrode 20, and improve touch sensitivity.

[0091] For example, such as Figure 6 As shown, multiple sub-electrodes 21 and multiple connecting parts 22 belonging to the same touch electrode 20 are arranged in the same layer and interconnected to form an integral structure.

[0092] For example, multiple touch electrodes 20 are disposed on the same layer, and the multiple touch electrodes 20 are arranged in an array along the row direction f1 and the column direction f2. The row direction f1 and the column direction f2 intersect each other, such as being perpendicular to each other.

[0093] For example, in the row direction f1, the gap width between two adjacent touch electrodes 20 is, for example, greater than or equal to 5 micrometers. In the column direction f2, the gap width between two adjacent touch electrodes 20 is, for example, greater than or equal to 5 micrometers.

[0094] In practical applications, the size of the touch electrode 20 can be designed according to the size of the sub-pixels in the display panel. For example, in the orthographic projection on the substrate 10, the touch electrode 20 covers one or more sub-pixels in the row direction f1 and one or more sub-pixels in the column direction f2. The multiple sub-pixels in the display panel are formed by the intersection and definition of multiple gate lines and multiple data lines.

[0095] For example, the size of the touch electrode 20 along the row direction f1 is equal to a positive integer multiple of the size of a sub-pixel along the row direction f1, and the size of the touch electrode 20 along the column direction f2 is equal to a positive integer multiple of the size of a sub-pixel along the column direction f2.

[0096] For example, the size of the touch electrode 20 along the row direction f1 is greater than or equal to 6 mm and less than or equal to 8 mm, and the size of the touch electrode 20 along the column direction f2 is greater than or equal to 6 mm and less than or equal to 8 mm.

[0097] For example, the distance between two adjacent touch electrodes 20 along the row direction f1 is equal to a positive integer multiple of the distance between two adjacent sub-pixels along the row direction f1, and the distance between two adjacent touch electrodes 20 along the column direction f2 is equal to a positive integer multiple of the distance between two adjacent sub-pixels along the column direction f2.

[0098] In this disclosure, the distance between two structures, such as the distance between A and B, refers to the center distance or edge distance between A and B along the line connecting them. The edge distance refers to the distance between the edges of A and B on the same side. For example, when A and B are arranged along the row direction f1, the edge distance between A and B can be the distance between the left edge of A and the left edge of B, or the distance between the right edge of A and the right edge of B. When A and B are arranged along the column direction f2, the edge distance between A and B can be the distance between the top edge of A and the top edge of B, or the distance between the bottom edge of A and the bottom edge of B.

[0099] It should be noted that, in Figure 3 In the diagram, Figure b is a magnified view of the area at position k1 (dashed box) in Figure a, and Figure c is a magnified view of the area at position k2 (dashed box) in Figure a. Figure 9 In the diagram, Figure b is a magnified view of the area at position k3 (dashed box) in Figure a, and Figure c is a magnified view of the area at position k4 (dashed box) in Figure a.

[0100] For example, such as Figure 3 or Figure 9 As shown, the first light-shielding area BM1 includes: a plurality of first light-shielding strips BM11 extending along the row direction f1 and arranged at equal intervals along the column direction f2, and a plurality of second light-shielding strips BM12 extending along the column direction f2 and arranged at equal intervals along the row direction f1. The first light-shielding strips BM11 and the second light-shielding strips BM12 intersect each other. The distance between two adjacent first light-shielding strips BM11 is, for example, a first spacing D1, and the distance between two adjacent second light-shielding strips BM12 is, for example, a second spacing D2.

[0101] For example, the distance between two adjacent touch electrodes 20 arranged along the column direction f2 is a positive integer multiple of the first pitch D1. Figure 4 In the middle, the distance D3 between two adjacent touch electrodes 20 arranged along the column direction f2 is 4 times the first spacing D1.

[0102] For example, such as Figure 3 or Figure 9As shown, the plurality of first light-shielding strips BM11 include: first sub-light-shielding strips BM111 and second sub-light-shielding strips BM112. In the orthographic projection on the substrate 10, the first sub-light-shielding strip BM111 is completely penetrated by the same touch electrode 20 along the column direction f2, and the second sub-light-shielding strip BM112 is partially penetrated by the touch electrode 20 along the column direction f2, and the second sub-light-shielding strip BM112 covers the gap between two adjacent touch electrodes 20 arranged along the column direction f2. For example, the second sub-light-shielding strip BM112 is located on opposite sides of at least one first sub-light-shielding strip BM111 along the column direction f2.

[0103] For example, such as Figure 3 or Figure 9 As shown, the plurality of second light-shielding strips BM12 include a third sub-light-shielding strip BM121 and a fourth sub-light-shielding strip BM122. In the orthographic projection on the substrate 10, the third sub-light-shielding strip BM121 covers the touch trace TX and the first via H1, and the fourth sub-light-shielding strip BM122 covers the gap between two adjacent touch electrodes 20 arranged along the row direction f1. For example, the fourth sub-light-shielding strip BM122 is located on opposite sides of at least one third sub-light-shielding strip BM121 along the row direction f1.

[0104] In some implementations, such as Figures 3 to 6 As shown, the touch electrode 20 includes a plurality of sub-electrodes 21 and at least one connecting portion 22. The plurality of sub-electrodes 21 are arranged along the row direction f1 and the column direction f2, respectively. Two sub-electrodes 21 that belong to the same touch electrode 20 and are adjacent along the row direction f1 are connected by the connecting portion 22. Two sub-electrodes 21 that are arranged along the column direction f2 and are adjacent to each other are not connected and belong to different touch electrodes 20.

[0105] In some implementations, such as Figures 3 to 5 As shown, multiple touch traces TX are arranged along the row direction f1. The touch traces TX are located between two sub-electrodes 21 that belong to the same touch electrode 20 and are adjacent along the row direction f1. The touch traces TX overlap with the orthographic projection of the connection portion 22 on the substrate 10.

[0106] By placing the touch trace TX between two sub-electrodes 21 that belong to the same touch electrode 20 and are adjacent along the row direction f1, and by having the touch trace TX overlap with the connecting part 22, the overlap area between the touch trace TX and the touch electrode 20 can be reduced, which is beneficial to reducing the load on the touch trace TX and the touch electrode 20, and improving the transmission speed and touch sensitivity.

[0107] For example, a plurality of connecting portions 22 are arranged in an array along the row direction f1 and the column direction f2, respectively. The size of the connecting portion 22 along the row direction f1 is smaller than the size of the sub-electrode 21 along the row direction f1, and the size of the connecting portion 22 along the column direction f2 is smaller than the size of the sub-electrode 21 along the column direction f2.

[0108] For example, the sub-electrode 21 is a strip electrode extending along the column direction f2, and the shape of the sub-electrode 21 is, for example, a rectangle with its long side parallel to the column direction f2.

[0109] For example, the size of the sub-electrode 21 can be designed according to the size of the sub-pixels in the display panel. For instance, in an orthographic projection on the substrate 10, the sub-electrode 21 covers one or more sub-pixels in the row direction f1 and one or more sub-pixels in the column direction f2.

[0110] For example, the size of sub-electrode 21 along the row direction f1 is equal to m times the size of a sub-pixel along the row direction f1, where m is a positive integer, for example, m = 1 (e.g., ...). Figure 3 (as shown), 2, or 3, etc. The size of the sub-electrode 21 along the column direction f2 is equal to n times the size of a sub-pixel along the column direction f2, where n is a positive integer, for example, n = 1, 2, or 3, etc. Where n is greater than or equal to m.

[0111] For example, the distance between two adjacent sub-electrodes 21 along the row direction f1 is equal to m times the distance between two adjacent sub-pixels along the row direction f1, and the distance between two adjacent sub-electrodes 21 along the column direction f2 is equal to n times the distance between two adjacent sub-pixels along the column direction f2.

[0112] In some implementations, such as Figure 4 As shown, the distance D3 between two adjacent sub-electrodes 21 arranged along the column direction f2 is a positive integer multiple of the first spacing D1. For example, in Figure 4 In the middle, the distance D3 between two adjacent sub-electrodes 21 arranged along the column direction f2 is 4 times the first spacing D1.

[0113] In some implementations, such as Figure 6 As shown, two sub-electrodes 21 belonging to the same touch electrode 20 and adjacent along the row direction f1 are connected by multiple connecting parts 22. Figure 6 In the middle, two sub-electrodes 21 belonging to the same touch electrode 20 and adjacent in the row direction f1 are connected by five connecting parts 22.

[0114] In some implementations, such as Figure 3 As shown, the multiple connection portions 22 belonging to the same touch electrode 20 and arranged along the column direction f2 include: a first connection portion 221, the orthogonal projection of the first connection portion 221 on the substrate 10 is located within the range of the first light-shielding strip BM11.

[0115] In some implementations, such as Figure 3As shown, the multiple connection portions 22 belonging to the same touch electrode 20 and arranged along the column direction f2 include: a second connection portion 222, the orthographic projection of the second connection portion 222 on the substrate 10 does not overlap with the first light-shielding strip BM11, and is located between two adjacent first light-shielding strips BM11.

[0116] In some implementations, such as Figure 3 As shown, the multiple connection portions 22 belonging to the same touch electrode 20 and arranged along the column direction f2 include: a first connection portion 221 and a second connection portion 222. The orthographic projection of the first connection portion 221 on the substrate 10 is located within the range of the first light-shielding strip BM11. The orthographic projection of the second connection portion 222 on the substrate 10 does not overlap with the first light-shielding strip BM11 and is located between two adjacent first light-shielding strips BM11.

[0117] By providing a second connecting part 222 between two adjacent first light-shielding strips BM11, it is beneficial to improve touch sensitivity.

[0118] In some embodiments, the distance between two adjacent connection portions 22 belonging to different touch electrodes 20 and adjacent along the column direction f2 is greater than or less than the distance between two adjacent connection portions 22 belonging to the same touch electrode 20 and adjacent along the column direction f2.

[0119] like Figure 6 As shown, the touch electrode 20 has a connecting portion 22 at two opposite edges along the column direction f2. In this case, two connecting portions 22 belonging to different touch electrodes 20 and adjacent along the column direction f2 (such as...) Figure 6 The distance between the two connecting portions 22 in the dashed box k5 is less than the distance between two connecting portions 22 that belong to the same touch electrode 20 and are adjacent along the column direction f2 (e.g., Figure 6 The distance between the two connecting parts 22) in the dashed box k6.

[0120] like Figure 3 As shown, no connecting portion 22 is provided at either of the two opposite edge positions of the touch electrode 20 along the column direction f2. In this case, the distance between two connecting portions 22 that belong to different touch electrodes 20 and are adjacent along the column direction f2 is greater than the distance between two connecting portions 22 that belong to the same touch electrode 20 and are adjacent along the column direction f2.

[0121] It should be noted that the multiple connecting parts 22 arranged along the column direction f2 can also be arranged at equal intervals, and this disclosure does not limit this.

[0122] In some embodiments, the distance between two adjacent connection portions 22 belonging to the same touch electrode 20 and along the column direction f2 is greater than or equal to one-tenth of the first spacing D1 and less than or equal to ten times the first spacing D1.

[0123] For example, such as Figure 3 As shown, a second connection portion 222 is disposed between two first connection portions 221 that belong to the same touch electrode 20 and are adjacent along the column direction f2, and the second connection portion 222 is centrally disposed between the two first connection portions 221 that belong to the same touch electrode 20 and are adjacent along the column direction f2. In this case, the distance between the two connection portions 22 that belong to the same touch electrode 20 and are adjacent along the column direction f2 is approximately half of the first spacing D1.

[0124] For example, such as Figure 4 As shown, the connecting portion 22 between two adjacent sub-electrodes 21 is a first connecting portion 221. Any two connecting portions 22 belonging to the same touch electrode 20 and adjacent along the column direction f2 are both first connecting portions 221, and multiple first connecting portions 221 belonging to the same touch electrode 20 overlap with different first light-shielding strips BM11 in a one-to-one correspondence. In this case, the distance between two connecting portions 22 belonging to the same touch electrode 20 and adjacent along the column direction f2 is approximately equal to the first spacing D1.

[0125] It is understandable that the smaller the distance between two adjacent connection portions 22 belonging to the same touch electrode 20 and along the column direction f2, the more connection portions 22 connected to the two sub-electrodes 21 there are. By increasing the number of connection portions 22 connected to the two sub-electrodes 21, the touch sensitivity can be improved.

[0126] In some embodiments, in the orthographic projection on the substrate 10, the number of connection portions 22 covered by a first sub-shielding strip BM111 along the column direction f2 is greater than or less than the number of connection portions 22 covered by a second sub-shielding strip BM112 along the column direction f2.

[0127] like Figure 3 As shown, the number of connecting portions 22 covered by a first sub-shielding strip BM111 along the column direction f2 is 1, and the number of connecting portions 22 covered by a second sub-shielding strip BM112 along the column direction f2 is 0. That is, the number of connecting portions 22 covered by a first sub-shielding strip BM111 along the column direction f2 is greater than the number of connecting portions 22 covered by a second sub-shielding strip BM112 along the column direction f2.

[0128] like Figure 4 As shown, the number of connecting portions 22 covered by a first sub-light-shielding strip BM111 along the column direction f2 is 1, and the number of connecting portions 22 covered by a second sub-light-shielding strip BM112 along the column direction f2 is 2. That is, the number of connecting portions 22 covered by a first sub-light-shielding strip BM111 along the column direction f2 is less than the number of connecting portions 22 covered by a second sub-light-shielding strip BM112 along the column direction f2.

[0129] In some implementations, such as Figure 3 As shown, the touch trace TX includes a main extension line YS and at least one branch FZ. The main extension line YS extends along the column direction f2. The at least one branch FZ is connected to the main extension line YS and is located on the same side of the main extension line YS. The connection portion 22 overlaps with the orthographic projection of the main extension line YS and the branch FZ on the substrate 10. The branch FZ is connected to the sub-electrode 21 and the connection portion 22 through a first via H1, and the first via H1 is disposed close to the connection portion 22.

[0130] In some implementations, such as Figure 3 , Figure 4 or Figure 7 As shown, the multiple touch traces TX include the first touch trace TX1, and the main extension line YS of the first touch trace TX1 does not overlap with the orthographic projection of the sub-electrode 21 on the substrate 10.

[0131] in, Figure 7 It shows Figure 3 A cross-sectional view at positions AA' and BB' along the middle.

[0132] For example, such as Figure 3 , Figure 4 or Figure 7 As shown, only one touch trace TX is provided between two sub-electrodes 21 that belong to the same touch electrode 20 and are adjacent along the row direction f1, and this touch trace TX is the first touch trace TX1.

[0133] In some implementations, such as Figure 5 or Figure 8 As shown, the multiple touch traces TX include a second touch trace TX2 and a third touch trace TX3. In the orthographic projection on the substrate 10, the second touch trace TX2 and the third touch trace TX3 are located between two sub-electrodes 21 that belong to the same touch electrode 20 and are adjacent along the row direction f1. The main extension line YS of the second touch trace TX2 partially overlaps with the edge of the sub-electrode 21 near the second touch trace TX2, and the main extension line YS of the third touch trace TX3 partially overlaps with the edge of the sub-electrode 21 near the third touch trace TX3.

[0134] in, Figure 8 It shows Figure 5 A cross-sectional view at positions AA' and BB' along the middle.

[0135] For example, such as Figure 5 or Figure 8As shown, only two touch traces TX are provided between two adjacent sub-electrodes 21 belonging to the same touch electrode 20 and along the row direction f1, and these two touch traces TX are the second touch trace TX2 and the third touch trace TX3. To prevent short circuits between the touch traces TX, for example, the gap width between the second touch trace TX2 and the third touch trace TX3 is greater than or equal to 4 micrometers.

[0136] For example, one, two or more touch traces TX can be provided between two sub-electrodes 21 that belong to the same touch electrode 20 and are adjacent along the row direction f1.

[0137] In some implementations, such as Figure 11 As shown, the touch electrode 20 has a continuous, non-perforated structure.

[0138] Because the touch electrode 20 has a continuous, non-perforated structure, its coverage area is large, which can further improve touch sensitivity. However, due to the large overlap between the non-perforated touch electrode 20 and the touch trace TX, the load on the touch trace TX is large, reducing the transmission speed.

[0139] For example, such as Figure 10 As shown, multiple touch traces TX that overlap with the same touch electrode 20 can be arranged at equal intervals along the row direction f1.

[0140] In some implementations, such as Figure 3 or Figure 9 As shown, the optical substrate also includes: a dummy trace DM, which is disposed on the same layer as the touch trace TX. The dummy trace DM is not connected to the touch electrode 20. In the orthographic projection on the substrate 10, the dummy trace DM is located within the range of the fourth sub-shielding strip BM122. In the row direction f1, the number of touch traces TX that overlap with the same third sub-shielding strip BM121 is equal to the number of dummy traces DM that overlap with the same fourth sub-shielding strip BM122.

[0141] In this design, the dummy trace DM is not connected to the touch electrode 20 or the touch chip. By setting up dummy trace DM, and ensuring that the number of touch traces TX that overlap with the same third sub-light-shielding strip BM121 is equal to the number of dummy trace DM that overlap with the same fourth sub-light-shielding strip BM122, it is beneficial to improve process uniformity, touch uniformity, and optical uniformity.

[0142] like Figure 3 or Figure 9As shown, touch traces TX are positioned between two sub-electrodes 21 belonging to the same touch electrode 20 and adjacent in the row direction f1, while dummy traces DM are positioned between two sub-electrodes 21 belonging to different touch electrodes 20 and adjacent in the row direction f1. Furthermore, the number of touch traces TX positioned between two sub-electrodes 21 belonging to the same touch electrode 20 and adjacent in the row direction f1 is equal to the number of dummy traces DM positioned between two sub-electrodes 21 belonging to different touch electrodes 20 and adjacent in the row direction f1.

[0143] like Figure 5 As shown, two touch lines TX are provided between two sub-electrodes 21 that belong to the same touch electrode 20 and are adjacent along the row direction f1. Two dummy lines DM are also provided between two sub-electrodes 21 that belong to different touch electrodes 20 and are adjacent along the row direction f1. In this case, the number of touch lines TX that overlap with the same third sub-shielding strip BM121 and the number of dummy lines DM that overlap with the same fourth sub-shielding strip BM122 are both 2.

[0144] like Figure 4 As shown, a touch trace TX is provided between two sub-electrodes 21 that belong to the same touch electrode 20 and are adjacent along the row direction f1. A dummy trace DM is also provided between two sub-electrodes 21 that belong to different touch electrodes 20 and are adjacent along the row direction f1. In this case, the number of touch traces TX that overlap with the same third sub-shielding strip BM121 and the number of dummy traces DM that overlap with the same fourth sub-shielding strip BM122 are both 1.

[0145] In some implementations, such as Figure 12 or Figure 13 As shown, in the orthographic projection on the substrate 10, the number of touch traces TX that overlap with different touch electrodes 20 is the same, which can improve load uniformity.

[0146] In some implementations, such as Figure 12 or Figure 13 As shown, in the orthographic projection on the substrate 10, the number of touch electrodes 20 overlapping with different touch traces TX is the same, which can improve load uniformity.

[0147] In other implementations, such as Figure 14As shown, the plurality of touch electrodes 20 include a first touch electrode 201, a second touch electrode 202, and a third touch electrode 203. In the orthographic projection on the substrate 10, the first touch electrode 201 and the second touch electrode 202 are arranged along the row direction f1, and the first touch electrode 201 and the third touch electrode 203 are arranged along the column direction f2. At least one touch trace TX overlaps with both the first touch electrode 201 and the third touch electrode 203. Furthermore, the number of touch traces TX overlapping with the first touch electrode 201 and the second touch electrode 202 is the same, while the number of touch traces TX overlapping with the first touch electrode 201 and the third touch electrode 203 is different.

[0148] For example, such as Figure 14 As shown, the number of touch traces TX that overlap with any two touch electrodes 20 in the same row is the same, that is, the first touch electrode 201 and the second touch electrode 202 are any two touch electrodes 20 located in the same row.

[0149] For example, the optical substrate can adopt a single-sided driving structure, that is, the touch traces TX of the contact control electrode 20 all extend to the same side of the optical region AA1 and are connected to the bonding area located on the same side of the optical region AA1. In some embodiments, such as Figure 12 As shown, the optical substrate also includes a first frame region BZ1, which is located on one side of the optical region AA1, i.e., multiple optical rotation regions XG. In the orthographic projection on the substrate 10, multiple touch electrodes 20 are arranged in an array along the row direction f1 and the column direction f2. Multiple touch traces TX connecting the same column of touch electrodes 20 extend to the first frame region BZ1 and are connected to the bonding area in the first frame region BZ1. The bonding area is used to bond and connect with the touch chip TouchIC.

[0150] In the single-sided driving structure, multiple touch traces TX that overlap with a touch electrode 20 are connected to the touch electrode 20 located in the same column. For each column of touch electrodes 20, the multiple touch traces TX connecting the touch electrodes 20 in that column extend to the first border area BZ1 and are connected to the bonding area in the first border area BZ1.

[0151] For example, the optical substrate can also adopt a double-sided driving structure, that is, the touch traces TX of the touch control electrode 20 extend to both sides of the optical region AA1 and are connected to the bonding areas located on both sides of the optical region AA1. The optical substrate adopting the double-sided driving structure is beneficial to reduce the load on the touch traces TX and improve touch sensitivity.

[0152] In some implementations, such as Figure 13As shown, the optical substrate also includes a second border region BZ2 and a third border region BZ3, which are disposed opposite to each other on both sides of multiple optical rotation regions XG along the column direction f2. In the orthographic projection on the substrate 10, multiple touch electrodes 20 are arranged in an array along the row direction f1 and the column direction f2. The multiple touch electrodes 20 on the same column are divided into a first sub-column ZL1 and a second sub-column ZL2. The first sub-column ZL1 includes multiple touch electrodes 20 disposed near the second border region BZ2, and the second sub-column ZL2 includes multiple touch electrodes 20 disposed near the third border region BZ3. Multiple touch traces TX connecting the first sub-column ZL1 extend to the second border region BZ2 and are connected to the bonding area in the second border region BZ2. Multiple touch traces TX connecting the second sub-column ZL2 extend to the third border region BZ3 and are connected to the bonding area in the third border region BZ3. The bonding area is used to bond with the touch chip TouchIC.

[0153] In the dual-side drive structure, multiple touch traces TX that overlap with a touch electrode 20 are connected to the touch electrode 20 located in the same sub-column (such as the first sub-column ZL1 or the second sub-column ZL2).

[0154] For example, the number of touch electrodes 20 included in the first sub-column ZL1 is the same as the number of touch electrodes 20 included in the second sub-column ZL2.

[0155] In some implementations, such as Figure 15 or Figure 16 As shown, the touch trace TX connecting the first sub-column ZL1 and the touch trace TX connecting the second sub-column ZL2 are separated from each other in the column direction f2, and the gap width d4 separating them in the column direction f2 is greater than or equal to the gap width d5 ​​between two adjacent touch electrodes 20 along the column direction f2. This prevents electrostatic breakdown between the touch trace TX connecting the first sub-column ZL1 and the touch trace TX connecting the second sub-column ZL2.

[0156] For example, the gap width d4 between the touch trace TX connecting the first sub-column ZL1 and the touch trace TX connecting the second sub-column ZL2 in the column direction f2 is, for example, greater than or equal to 20 micrometers, and the specific value can be determined according to the magnitude of the driving voltage.

[0157] In practical applications, smaller optical substrates (such as those used in mobile phones, laptops, and small-sized televisions) can use a single-sided driving structure, while larger optical substrates (such as those used in large-sized televisions) can use a double-sided driving structure.

[0158] In some implementations, such as Figure 7 or Figure 8As shown, the optical substrate includes: a transparent electrode layer L1 disposed on one side of the substrate 10, the transparent electrode layer L1 including a plurality of touch electrodes 20; a wiring layer L2 disposed on the side of the transparent electrode layer L1 away from the substrate 10, the wiring layer L2 including a plurality of touch wiring lines TX; a light-shielding layer L3 disposed on the side of the wiring layer L2 away from the substrate 10, the light-shielding layer L3 being used to form a first light-shielding region BM1; and a liquid crystal layer LC disposed on the side of the light-shielding layer L3 away from the substrate 10, the liquid crystal layer LC including a plurality of optical rotation regions XG, the liquid crystal molecules in the first optical rotation region XG1 and the second optical rotation region XG2 having different pretilt angles.

[0159] For example, such as Figure 7 or Figure 8 As shown, a transparent electrode layer L1, a first insulating layer PVX1, a wiring layer L2, a second insulating layer PVX2, a light-shielding layer L3, an alignment film PI, a liquid crystal layer LC, and a planarization layer OC are sequentially stacked on one side of the substrate 10, with the transparent electrode layer L1 disposed close to the substrate 10.

[0160] When exposing and aligning the liquid crystals in the first optical rotation region XG1 and the second optical rotation region XG2, the first light-shielding region BM1 set between the first optical rotation region XG1 and the second optical rotation region XG2 can provide an exposure "path" for the exposure machine and can also prevent display crosstalk between the first optical rotation region XG1 and the second optical rotation region XG2, thereby improving the image quality of the 3D display.

[0161] For example, the light-rotating areas XG in odd-numbered rows are all first light-rotating areas XG1, and the light-rotating areas XG in even-numbered rows are all second light-rotating areas XG2. In this case, the first light-shielding strip BM11 is used for exposure tracking and crosstalk prevention, and the second light-shielding strip BM12 is used to block the touch trace TX.

[0162] For example, the touch electrode 20 is made of a transparent conductive material, such as metal oxides like ITO, IZO, IGZO, IGO, and ZTO.

[0163] For example, the touch traces TX are made of metallic materials such as aluminum, copper, titanium, molybdenum, silver, etc.

[0164] For example, the materials of the first insulating layer PVX1 and the second insulating layer PVX2 include inorganic insulating materials such as silicon nitride, silicon oxide, or silicon oxynitride.

[0165] The optical substrate provided in this disclosure is applicable to products of various sizes, from small mobile phones and watches to large televisions. The sub-electrode 21 can be designed in different sizes according to the size of the optical substrate. The optical substrate provided in this disclosure is suitable for display devices used in various fields, such as display devices used in education and medical fields.

[0166] This disclosure provides a display device, such as Figure 17 As shown, the display device includes: a display panel PNL, the display panel PNL including a plurality of sub-pixels PX and a second light-shielding region BM2, the second light-shielding region BM2 being located between at least two adjacent sub-pixels PX; and an optical substrate GPR as provided in any embodiment, the optical substrate GPR being disposed on the light-emitting side of the display panel PNL, and the substrate 10 being disposed away from the display panel PNL, the orthographic projection of the touch electrode 20 on the display panel PNL overlapping with the sub-pixels PX, and the orthographic projection of the touch trace TX on the display panel PNL being located within the range of the second light-shielding region BM2.

[0167] For example, the display panel PNL includes a display area AA2 and a second peripheral area ZB2 located around the display area AA2. In the orthographic projection on the display panel PNL, the display area AA2 overlaps with the optical area AA1, and the second peripheral area ZB2 overlaps with the first peripheral area ZB1.

[0168] For example, the orthographic projection of the first light-shielding area BM1 onto the display panel PNL is located within the range of the second light-shielding area BM2.

[0169] like Figure 2 As shown, the first light-shielding area BM1 includes: a plurality of first light-shielding strips BM11 extending along the row direction f1 and arranged at equal intervals along the column direction f2, and a plurality of second light-shielding strips BM12 extending along the column direction f2 and arranged at equal intervals along the row direction f1.

[0170] In some implementations, the distance between two adjacent first light-shielding strips BM11 is equal to the distance between two adjacent sub-pixels PX along the column direction f2. The distance between two adjacent sub-pixels PX along the column direction f2 is the arrangement period of the sub-pixels PX along the column direction f2.

[0171] In some implementations, the distance between two adjacent second light-shielding strips BM12 is equal to a positive integer multiple of the distance between two adjacent sub-pixels PX along the row direction f1. The distance between two adjacent sub-pixels PX along the row direction f1 is the arrangement period of the sub-pixels PX along the row direction f1.

[0172] In practical implementation, the size and number of touch electrodes 20 can be determined first based on the size of different optical substrates (GPR). Then, the number of touch traces TX that need to overlap with the touch electrodes 20 in the same column can be determined based on the number of touch electrodes 20 in the same column. Finally, the arrangement spacing of sub-electrodes 21 can be determined based on the number of touch traces TX. It can be understood that the larger the coverage area of ​​the sub-electrodes 21, the higher the touch sensitivity.

[0173] For example, the display panel PNL and the optical substrate GPR can be bonded together using optical adhesive OCA.

[0174] For example, the display device provided in this disclosure is a 3D display device, which can achieve a 3D display effect when used with polarized glasses. One lens of the polarized glasses is used to transmit right-handed polarized light emitted from the 3D display device, and the other lens is used to transmit left-handed polarized light emitted from the 3D display device.

[0175] Among them, the 3D display device can be a cinema screen, a teaching and training screen, a medical screen, an exhibition screen, or an electronic device that integrates any of the above screens.

[0176] In this disclosure, left-handed polarized light may include at least one of the following: left-handed circularly polarized light and left-handed elliptically polarized light. Right-handed polarized light may include at least one of the following: right-handed circularly polarized light and right-handed elliptically polarized light.

[0177] 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.

[0178] In this disclosure, relational terms such as first and second are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0179] In this specification, "electrical connection" and "coupling" include situations where components are connected together by elements that have some electrical function. There are no particular limitations on what constitutes an "electrical function," as long as it allows for the transmission and reception of electrical signals between the connected components. Examples of "electrical functions" include not only electrodes and wiring, but also switching elements such as transistors, resistors, inductors, capacitors, and other components with various functions.

[0180] In this disclosure, "multiple" means two or more, and "at least one" means one or more, unless otherwise explicitly specified. "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: A only, B only, C only, a combination of A and B, a combination of A and C, a combination of B and C, and a combination of A, B, and C. "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0181] The use of “for” or “configured to” in this disclosure implies an open and inclusive language that does not preclude applicability to or configuration to devices for performing additional tasks or steps.

[0182] As used in this disclosure, “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).

[0183] As used in this disclosure, "parallel," "perpendicular," "equal," and "flush" include the described situation and situations that are similar to the described situation, within an acceptable deviation range, 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, wherein an acceptable deviation range for approximate parallelism may be, for example, within 10° or 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, wherein an acceptable deviation range for approximate perpendicularity may also be, for example, within 10° or 5°. "Equal" includes absolute equality and approximate equality, wherein an acceptable deviation range for approximate equality may be, for example, a difference between the two equals being less than or equal to 5% of either one. "Flush" includes absolute flush and approximate flush, wherein an acceptable deviation range for approximate flush may be, for example, a distance between the flushes being less than or equal to 5% of either one's dimension.

[0184] It should be understood that when a layer or element is referred to as being disposed on one side of another layer or substrate, it may be that the layer or element is directly disposed on the other layer or substrate, or it may be that there is an intermediate layer between the layer or element and the other layer or substrate.

[0185] This disclosure describes exemplary embodiments with reference to cross-sectional views and / or plan views as 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 being limited to the shapes of the regions shown in this disclosure, 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.

[0186] 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. An optical substrate, characterized by, The optical substrate includes multiple optical rotation regions and a first light-shielding region. The first light-shielding region is located at least between two adjacent optical rotation regions. The two adjacent optical rotation regions include a first optical rotation region and a second optical rotation region. The first optical rotation region is used to convert linearly polarized light with a set polarization state in the incident light into left-handed polarized light. The second optical rotation region is used to convert linearly polarized light with the set polarization state in the incident light into right-handed polarized light. The optical substrate includes: a substrate, and a plurality of touch electrodes and a plurality of touch traces disposed on one side of the substrate. The plurality of touch electrodes are spaced apart from each other and are not connected to each other. Each touch electrode is connected to a corresponding touch trace. The touch electrodes are used to detect the touch position of the touch object on the optical substrate. In the orthographic projection on the substrate, the touch electrode overlaps with the light-rotating region, and the touch trace is located within the range of the first light-shielding region.

2. The optical substrate of claim 1, wherein, The touch electrode and the touch traces are disposed on different layers. In the orthographic projection on the substrate, the same touch electrode overlaps with multiple touch traces, and one of the multiple touch traces overlapping with the same touch electrode is connected to the touch electrode through a first via; and All interconnected parts of the same touch electrode are located in the same film layer.

3. The optical substrate according to claim 2, wherein, The touch electrode includes multiple sub-electrodes and at least one connecting part. The multiple sub-electrodes are arranged along the row direction and the column direction respectively. Two sub-electrodes that belong to the same touch electrode and are adjacent along the row direction are connected by the connecting part. Two adjacent sub-electrodes that are arranged along the column direction belong to different touch electrodes. Multiple touch traces are arranged along the row direction. The touch traces are located between two sub-electrodes that belong to the same touch electrode and are adjacent along the row direction. The touch traces overlap with the orthographic projection of the connection portion on the substrate.

4. The optical substrate according to claim 3, wherein, The first light-shielding area includes a plurality of first light-shielding strips extending along the row direction and arranged at equal intervals along the column direction. The distance between two adjacent first light-shielding strips is a first spacing, and the distance between two adjacent sub-electrodes arranged along the column direction is a positive integer multiple of the first spacing.

5. The optical substrate according to claim 3, wherein, Two sub-electrodes belonging to the same touch electrode and adjacent in the row direction are connected by multiple connecting parts.

6. The optical substrate according to claim 5, wherein, The first light-shielding area includes a plurality of first light-shielding strips that extend along the row direction and are arranged at equal intervals along the column direction; Multiple connecting portions belonging to the same touch electrode and arranged along the column direction include at least one of the following: A first connecting portion, wherein the orthographic projection of the first connecting portion on the substrate lies within the range of the first light-shielding strip; and The second connecting portion, the orthographic projection of the second connecting portion on the substrate does not overlap with the first light-shielding strip, and is located between two adjacent first light-shielding strips.

7. The optical substrate according to claim 5, wherein, The distance between two adjacent connection parts belonging to different touch electrodes along the column direction is greater than or less than the distance between two adjacent connection parts belonging to the same touch electrode along the column direction.

8. The optical substrate according to claim 5, wherein, The first light-shielding area includes a plurality of first light-shielding strips extending along the row direction and arranged at equal intervals along the column direction, and the distance between two adjacent first light-shielding strips is the first spacing; The distance between two adjacent connection portions belonging to the same touch electrode and along the column direction is greater than or equal to one-tenth of the first spacing and less than or equal to ten times the first spacing.

9. The optical substrate according to claim 3, wherein, The first light-shielding area includes a plurality of first light-shielding strips extending along the row direction and arranged at equal intervals along the column direction, wherein the plurality of first light-shielding strips include: In the orthographic projection onto the substrate, the first sub-shielding strip is completely penetrated by the sub-electrode along the column direction, and the second sub-shielding strip is partially penetrated by the sub-electrode along the column direction. The second sub-shielding strip covers the gap between two adjacent sub-electrodes arranged along the column direction. In the orthographic projection on the substrate, the number of connections covered by a first sub-shielding strip along the column direction is greater than or less than the number of connections covered by a second sub-shielding strip along the column direction.

10. The optical substrate according to claim 3, wherein, The touch trace includes a main extension line and at least one branch. The main extension line extends along the column direction. The at least one branch is connected to the main extension line and located on the same side of the main extension line. The connection portion overlaps with the orthographic projection of the main extension line and the branch on the substrate. The branch is connected to the sub-electrode and the connection portion respectively through the first via. The first via is disposed close to the connection portion.

11. The optical substrate according to claim 10, wherein, The plurality of touch traces include a first touch trace, wherein the main extension of the first touch trace does not overlap with the orthographic projection of the sub-electrode on the substrate.

12. The optical substrate according to claim 10, wherein, The multiple touch traces include a second touch trace and a third touch trace. In the orthographic projection on the substrate, the second touch trace and the third touch trace are located between two sub-electrodes that belong to the same touch electrode and are adjacent in the same direction. The main extension line of the second touch trace partially overlaps with the sub-electrode near the second touch trace, and the main extension line of the third touch trace partially overlaps with the sub-electrode near the third touch trace.

13. The optical substrate according to claim 2, wherein, The touch electrode has a continuous, non-perforated structure.

14. The optical substrate according to claim 2, wherein, The first light-shielding area includes a plurality of first light-shielding strips extending along the row direction and arranged at equal intervals along the column direction, wherein the plurality of first light-shielding strips include: In the orthographic projection on the substrate, the first sub-light-shielding strip is completely penetrated by the touch electrode along the column direction, the second sub-light-shielding strip is partially penetrated by the touch electrode along the column direction, and the second sub-light-shielding strip covers the gap between two adjacent touch electrodes arranged along the column direction.

15. The optical substrate according to claim 2, wherein, The first light-shielding area includes a plurality of second light-shielding strips extending along the column direction and arranged at equal intervals along the row direction, the plurality of second light-shielding strips including: In the orthographic projection on the substrate, the third sub-shielding strip covers the touch trace and the first via, and the fourth sub-shielding strip covers the gap between two adjacent touch electrodes arranged along the row direction.

16. The optical substrate according to claim 15, wherein, The optical substrate further includes: The dummy traces are disposed on the same layer as the touch traces and are not connected to the touch electrodes. In the orthographic projection on the substrate, the dummy traces are located within the range of the fourth sub-light-shielding strip, and in the row direction, the number of touch traces that overlap with the same third sub-light-shielding strip is equal to the number of dummy traces that overlap with the same fourth sub-light-shielding strip.

17. The optical substrate according to claim 2, wherein, In the orthographic projection on the substrate, the number of touch traces overlapping with different touch electrodes is the same.

18. The optical substrate according to claim 2, wherein, The plurality of touch electrodes include a first touch electrode, a second touch electrode, and a third touch electrode. In the orthographic projection on the substrate, the first touch electrode and the second touch electrode are arranged along the row direction, and the first touch electrode and the third touch electrode are arranged along the column direction. At least one touch trace overlaps with the first touch electrode and the third touch electrode respectively. The number of touch traces overlapping with the first touch electrode and the second touch electrode is the same, while the number of touch traces overlapping with the first touch electrode and the third touch electrode is different.

19. The optical substrate according to claim 2, wherein, The first light-shielding area includes: a plurality of first light-shielding strips extending along the row direction and arranged at equal intervals along the column direction, and a plurality of second light-shielding strips extending along the column direction and arranged at equal intervals along the row direction, wherein the first light-rotating area and the second light-rotating area are located on both sides of the first light-shielding strips and / or the second light-shielding strips.

20. The optical substrate according to claim 2, wherein, The optical substrate further includes a first frame region, which is located on one side of the plurality of optical rotation regions; In the orthographic projection on the substrate, a plurality of touch electrodes are arranged in an array along the row and column directions, and multiple touch traces connecting the same column of touch electrodes extend to the first frame area and are connected to the bonding area in the first frame area.

21. The optical substrate according to claim 2, wherein, The optical substrate further includes a second frame region and a third frame region, which are disposed opposite to each other on both sides of the plurality of optical rotation regions along the column direction; In the orthographic projection on the substrate, a plurality of touch electrodes are arranged in an array along the row and column directions. The plurality of touch electrodes in the same column are divided into a first sub-column and a second sub-column. The first sub-column includes a plurality of touch electrodes disposed near the second border area, and the second sub-column includes a plurality of touch electrodes disposed near the third border area. Multiple touch traces connecting the first sub-column extend to the second border area and connect to the binding area in the second border area. Multiple touch traces connecting the second sub-column extend to the third border area and connect to the binding area in the third border area.

22. The optical substrate according to claim 21, wherein, The touch traces connecting the first sub-column and the touch traces connecting the second sub-column are separated from each other in the column direction, and the gap width between them in the column direction is greater than or equal to the gap width between two adjacent touch electrodes along the column direction.

23. The optical substrate according to any one of claims 1 to 22, wherein, The optical substrate includes: A transparent electrode layer is disposed on one side of the substrate, and the transparent electrode layer includes a plurality of the touch electrodes; A wiring layer is disposed on the side of the transparent electrode layer away from the substrate, and the wiring layer includes a plurality of the touch wiring lines; A light-shielding layer is disposed on the side of the wiring layer away from the substrate, the light-shielding layer being used to form the first light-shielding area; and A liquid crystal layer is disposed on the side of the light-shielding layer away from the substrate. The liquid crystal layer includes a plurality of optical rotation regions, and the liquid crystal molecules in the first optical rotation region and the second optical rotation region have different pretilt angles.

24. A display device, characterized in that, The display device includes: A display panel, the display panel including a plurality of sub-pixels and a second light-shielding area, the second light-shielding area being located between at least two adjacent sub-pixels; and The optical substrate as described in any one of claims 1 to 23, wherein the optical substrate is disposed on the light-emitting side of the display panel, and the substrate is disposed away from the display panel, the orthographic projection of the touch electrode on the display panel overlaps with the sub-pixel, and the orthographic projection of the touch trace on the display panel is located within the range of the second light-shielding area.

25. The display device according to claim 24, wherein, The first light-shielding area includes: a plurality of first light-shielding strips extending along the row direction and arranged at equal intervals along the column direction, and a plurality of second light-shielding strips extending along the column direction and arranged at equal intervals along the row direction; The distance between two adjacent first light-shielding strips is equal to the distance between two adjacent sub-pixels along the column direction, and the distance between two adjacent second light-shielding strips is equal to a positive integer multiple of the distance between two adjacent sub-pixels along the row direction.

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