Grating adjusting device, 3D display device

Abstract

The application provides a grating adjusting device and a 3D display device, and relates to the technical field of display, which can reduce the crosstalk phenomenon in the moving process, thereby improving the user experience and product quality. The grating adjusting device comprises a first electrode layer, a second electrode layer, and oppositely arranged first and second substrates. The grating adjusting device further comprises a plurality of first driving lines, a plurality of second driving lines, and a plurality of grating units arranged along a first direction. The grating unit is configured to form a light-transmitting unit and a light-blocking unit when the grating adjusting device is powered on, and the opening position and / or opening rate of the grating unit is adjustable. The plurality of grating units are divided into at least one group. In each grating unit of the same group, at least two first sub-electrodes are respectively electrically connected to different first driving lines, and at least two second sub-electrodes are respectively electrically connected to different second driving lines.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a grating adjustment device and a 3D display device. Background Technology

[0002] With the development and advancement of science and technology, 3D (three-dimensional) display technology has become a hot research field. Most existing 3D display devices require users to wear 3D glasses, which is inconvenient and results in a poor user experience. Therefore, glasses-free 3D display devices that achieve a 3D display effect without the need for glasses have attracted attention. Currently, glasses-free 3D display devices experience crosstalk when the user moves slightly, leading to nausea, dizziness, and other unpleasant experiences. Summary of the Invention

[0003] Embodiments of this application provide a grating adjustment device and a 3D display device, which can reduce crosstalk during movement, thereby improving user experience and product quality.

[0004] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0005] On one hand, a grating adjustment device is provided for use in a 3D display device. The grating adjustment device includes a first electrode layer, a second electrode layer, and a first substrate and a second substrate disposed opposite to each other. The first electrode layer is disposed on the side of the first substrate closer to the second substrate, and the second electrode layer is disposed on the side of the second substrate closer to the first substrate.

[0006] The first electrode layer includes a first sub-electrode layer and a second sub-electrode layer stacked together. The first sub-electrode layer includes a plurality of first sub-electrodes arranged along a first direction, and the second sub-electrode layer includes a plurality of second sub-electrodes arranged along the first direction. The orthographic projections of the first sub-electrodes on the first substrate and the orthographic projections of the second sub-electrodes on the first substrate are alternately arranged.

[0007] The grating adjustment device further includes multiple first driving lines, multiple second driving lines, and multiple grating units arranged along the first direction; the grating unit includes multiple first sub-electrodes and multiple second sub-electrodes, and is configured such that: when the grating adjustment device is powered on, the grating unit can form a light-transmitting unit and a light-blocking unit, and the opening position and / or aperture ratio of the grating unit is adjustable;

[0008] The plurality of grating units are divided into at least one group; in each grating unit in the same group, at least two first sub-electrodes are electrically connected to different first driving lines, and at least two second sub-electrodes are electrically connected to different second driving lines.

[0009] Optionally, in each of the grating units in the same group, all the first sub-electrodes are electrically connected to different first driving lines, and all the second sub-electrodes are electrically connected to different second driving lines.

[0010] Optionally, in the grating unit, a plurality of first sub-electrodes are arranged along the first direction, and a plurality of second sub-electrodes are arranged along the first direction;

[0011] In all the grating units in the same group, the first sub-electrodes with the same serial number are electrically connected to the same first driving line, and the second sub-electrodes with the same serial number are electrically connected to the same second driving line.

[0012] Optionally, the plurality of grating units are divided into multiple groups;

[0013] The first driving lines are divided into multiple groups, and the number of groups of the first driving lines is the same as the number of groups of the grating units. Each group of the first driving lines is electrically connected to the grating units of a different group. The number of the first driving lines in each group is the same as the number of the first sub-electrodes of the grating units in each group.

[0014] The second driving lines are divided into multiple groups, and the number of groups of the second driving lines is the same as the number of groups of the grating units. Each group of the second driving lines is electrically connected to the grating units of a different group. The number of the second driving lines in each group is the same as the number of the second sub-electrodes of the grating units in each group.

[0015] Optionally, the grating adjustment device further includes at least one driving unit; each group of first driving lines and each group of second driving lines are electrically connected to at least one of the driving units.

[0016] Optionally, each group of the first drive lines is divided into a first part and a second part, and the first part and the second part are respectively electrically connected to different drive units;

[0017] Each group of second drive lines is divided into a third part and a fourth part, and the third part and the fourth part are electrically connected to different drive units respectively.

[0018] Optionally, the orthographic projection of the first portion on the first substrate and the orthographic projection of the second portion on the first substrate are respectively disposed on opposite sides of the orthographic projection of the first electrode layer on the first substrate;

[0019] The orthographic projection of the third part on the first substrate and the orthographic projection of the fourth part on the first substrate are respectively disposed on opposite sides of the orthographic projection of the first electrode layer on the first substrate.

[0020] Optionally, the first part and the second part are mirror images of each other, and the third part and the fourth part are mirror images of each other.

[0021] Optionally, in each group of grating units, the first sub-electrode with an odd number is electrically connected to the first driving line of the first part, and the first sub-electrode with an even number is electrically connected to the first driving line of the second part.

[0022] In each group of grating units, the second sub-electrode with an odd number is electrically connected to the second driving line of the third part, and the second sub-electrode with an even number is electrically connected to the second driving line of the fourth part.

[0023] Optionally, the grating adjustment device further includes a grating region and a non-grating region connected to the grating region;

[0024] The first electrode layer and the second electrode layer are disposed in the grating region, and multiple first driving lines and multiple second driving lines are disposed in the non-grating region.

[0025] Optionally, one end of the first sub-electrode extends into the non-grating region and is connected to the corresponding first driving line;

[0026] One end of the second sub-electrode extends into the non-grating region and is connected to the corresponding second driving line.

[0027] Optionally, in the grating unit, a plurality of first sub-electrodes are arranged along the first direction, and a plurality of second sub-electrodes are arranged along the first direction; the first sub-electrodes and the second sub-electrodes respectively include a first end and a second end opposite to each other;

[0028] In the grating unit, the first ends of the first sub-electrode and the second sub-electrode with odd numbers extend into the non-grating region, and the second ends of the first sub-electrode and the second sub-electrode with even numbers extend into the non-grating region.

[0029] Optionally, the materials of the first sub-electrode and the second sub-electrode include transparent conductive materials.

[0030] Optionally, the first sub-electrode and the second sub-electrode may include strip electrodes.

[0031] In another aspect, a 3D display device is provided, including a display panel and the aforementioned raster adjustment device; the raster adjustment device is disposed opposite to the display panel.

[0032] Optionally, the display panel includes a touch display panel, and the grating adjustment device is disposed on the backlight side of the display panel.

[0033] Optionally, the grating adjustment device includes a grating area and a non-grating area connected to the grating area; the display panel includes a display area and a non-display area connected to the display area;

[0034] The display area covers the raster area, and the non-display area covers the non-raster area.

[0035] Optionally, the grating adjustment device includes a first substrate and a second substrate disposed opposite to each other, and the display panel includes a third substrate and a fourth substrate disposed opposite to each other; the second substrate is bonded to the third substrate.

[0036] Optionally, the 3D display device further includes an imaging unit, the grating adjustment device being electrically connected to the imaging unit and configured to adjust the opening position and / or aperture ratio of the grating unit of the grating adjustment device according to the imaging information of the imaging unit.

[0037] This application provides a grating adjustment device and a 3D display device. The grating adjustment device is applied to a 3D display device. The grating adjustment device includes a first electrode layer, a second electrode layer, and a first substrate and a second substrate disposed opposite to each other. The first electrode layer is disposed on the side of the first substrate closer to the second substrate, and the second electrode layer is disposed on the side of the second substrate closer to the first substrate. The first electrode layer includes a first sub-electrode layer and a second sub-electrode layer stacked together. The first sub-electrode layer includes a plurality of first sub-electrodes arranged along a first direction, and the second sub-electrode layer includes a plurality of second sub-electrodes arranged along the first direction. The orthographic projection of the first sub-electrodes on the first substrate is perpendicular to the first electrode layer. The second sub-electrodes are alternately arranged in orthographic projection on the first substrate; the grating adjustment device further includes multiple first driving lines, multiple second driving lines, and multiple grating units arranged along the first direction; the grating unit includes multiple first sub-electrodes and multiple second sub-electrodes, and is configured such that: when the grating adjustment device is powered on, the grating unit can form a light-transmitting unit and a light-blocking unit, and the opening position and / or aperture ratio of the grating unit is adjustable; the multiple grating units are at least divided into a group; in each grating unit of the same group, at least two first sub-electrodes are electrically connected to different first driving lines, and at least two second sub-electrodes are electrically connected to different second driving lines.

[0038] By applying the aforementioned grating adjustment device to a 3D display device, the voltages of multiple first sub-electrodes and multiple second sub-electrodes of each grating unit can be controlled by multiple first driving lines and multiple second driving lines, thereby controlling the size and position of the light-transmitting and light-blocking units formed by each grating unit. Thus, during user movement, the size and position of the light-transmitting and light-blocking units formed by each grating unit can be adjusted in real time to match the viewpoint position after movement as closely as possible, thereby reducing crosstalk during movement and improving user experience and product quality.

[0039] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application 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 application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of the structure of a 3D display device provided in an embodiment of this application;

[0042] Figure 2a and Figure 2b These are schematic diagrams of the structures of two grating adjustment devices provided in the embodiments of this application;

[0043] Figure 3 This is a schematic diagram of the structure of a grating unit provided in an embodiment of this application;

[0044] Figure 4 and Figure 5 Schematic diagrams of the structures of two first sub-electrodes and second sub-electrodes provided in embodiments of this application;

[0045] Figure 6 A schematic diagram illustrating a 3D display implementation provided in an embodiment of this application;

[0046] Figure 7 A schematic diagram illustrating a principle for avoiding crosstalk after the viewpoint is horizontally shifted to the right, as provided in an embodiment of this application.

[0047] Figure 8 In the diagram, figure a shows the schematic diagram without crosstalk, figure b shows the schematic diagram after the viewing distance is reduced, and figure c shows the schematic diagram after the viewing distance is increased.

[0048] Figure 9 A schematic diagram of a grouped adjustment grating unit provided for an embodiment of this application;

[0049] Figure 10 and Figure 11 The following are schematic diagrams of two other grating adjustment devices provided in the embodiments of this application. Detailed Implementation

[0050] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0051] In the embodiments of this application, the terms "first", "second", "third", "fourth" are used to distinguish the same or similar items with essentially the same function and effect, only for the purpose of clearly describing the technical solution of the embodiments of this application, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0052] In the embodiments of this application, "multiple" means two or more, and "at least one" means one or more, unless otherwise explicitly defined.

[0053] In the embodiments of this application, 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 only for the convenience of describing this application and simplifying the description, and do not 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 limitations on this application.

[0054] This application provides a raster adjustment device applied to a 3D display device, see reference. Figure 1 As shown, the grating adjustment device 100 includes a first electrode layer 3, a second electrode layer 4, and a first substrate 1 and a second substrate 2 disposed opposite to each other. The first electrode layer 3 is disposed on the side of the first substrate 1 close to the second substrate 2, and the second electrode layer 4 is disposed on the side of the second substrate 2 close to the first substrate 1.

[0055] refer to Figure 1 As shown, the first electrode layer 3 includes a first sub-electrode layer 31 and a second sub-electrode layer 32 stacked together, as referenced. Figure 1 and Figure 2a As shown, the first sub-electrode layer 31 includes a plurality of first sub-electrodes 33 arranged along a first direction, and the second sub-electrode layer 32 includes a plurality of first sub-electrodes 33 arranged along the first direction ( Figure 2aMultiple second sub-electrodes 34 are arranged in the OA direction, and the orthographic projections of the first sub-electrode 33 on the first substrate 1 and the orthographic projections of the second sub-electrodes 32 on the first substrate 1 are alternately arranged.

[0056] refer to Figure 2a As shown, the grating adjustment device further includes multiple first drive lines 41, multiple second drive lines 42, and multiple grating units 20 arranged along a first direction (OA direction); the grating unit 20 includes multiple first sub-electrodes 33 and multiple second sub-electrodes 34, and is configured to: when the grating adjustment device is powered on, reference Figure 3 As shown, the grating unit can form a light-transmitting unit 21 and a light-blocking unit 22, and the opening position and / or aperture ratio of the grating unit are adjustable.

[0057] Multiple grating units are divided into at least one group; in each grating unit of the same group, at least two first sub-electrodes are electrically connected to different first driving lines, and at least two second sub-electrodes are electrically connected to different second driving lines.

[0058] The aforementioned grating adjustment device may include a liquid crystal grating adjustment device, which may be a TN (Twisted Nematic) type liquid crystal grating adjustment device. The grating adjustment device may also include a liquid crystal layer disposed between the first electrode layer and the second electrode layer; of course, it may also include other film layers, which will not be described in detail here.

[0059] The aforementioned second electrode layer can be as follows: Figure 1 The diagram shows a third sub-electrode that is disposed across the entire surface. When energized, the first and second sub-electrodes form an electric field with the third sub-electrode, thereby changing the torsion of the liquid crystal molecules in the liquid crystal layer located between the first and second electrode layers, and thus changing the amount of light emitted after passing through the grating adjustment device, thereby forming a light-transmitting unit and a light-shielding unit.

[0060] In the aforementioned first electrode layer, the first sub-electrode layer 31 can be as follows: Figure 1 The first sub-electrode layer is disposed on the side of the second sub-electrode layer close to the first substrate 1, or the second sub-electrode layer can be disposed on the side of the second sub-electrode layer away from the first substrate; this is not limited here.

[0061] The widths of the first sub-electrode and the second sub-electrode along the first direction are not limited and can be selected based on factors such as the size of the display panel. For example, a grating adjustment device is used in a 10.95-inch 3D display device, and the grating unit can be as follows: Figure 4 As shown, it includes 20 first sub-electrodes ( Figure 1 (labeled as S2, S4, S6...S40 respectively) and 20 second sub-electrodes ( Figure 1(Respectively labeled S1, S3, S5...S39), see reference. Figure 5 As shown, the width of the first sub-electrode and the second sub-electrode along the first direction can be 5.21 μm, the spacing between adjacent first sub-electrodes along the first direction can be 4.01 μm, and the width of the portion of the two side boundaries of the first sub-electrode that overlaps with the second sub-electrode along the direction perpendicular to the first substrate along the first direction is 0.6 μm.

[0062] The orthographic projections of the first sub-electrode and the second sub-electrode on the first substrate are alternately arranged. These projections may partially overlap or not overlap, which is not limited here. Due to limitations in the relevant processes, the boundaries of the first and second sub-electrodes may partially overlap along a direction perpendicular to the first substrate; in this case, the orthographic projections of the first and second sub-electrodes on the first substrate partially overlap.

[0063] With the first sub-electrode layer as Figure 1 The example shown is located on the side of the second sub-electrode layer near the first substrate. The portion of the first sub-electrode that overlaps with the second sub-electrode along a direction perpendicular to the first substrate (e.g.) Figure 5 The black portion of the first sub-electrode (marked as S2) is an ineffective electrode, shielded by the second sub-electrode, and has no effect on the liquid crystal. The portion of the first sub-electrode that does not overlap with the second sub-electrode along the direction perpendicular to the first substrate is an effective electrode, capable of controlling the rotation of the liquid crystal. The second sub-electrode is closer to the liquid crystal layer than the first sub-electrode and is not affected by the first sub-electrode. Therefore, all of the second sub-electrodes are effective electrodes, capable of controlling the rotation of the liquid crystal. Figure 5 In order to avoid the first sub-electrode and the second sub-electrode from interfering with each other, the grating adjustment device may also include an insulating layer 30.

[0064] Of course, if the first sub-electrode layer is disposed on the side of the second sub-electrode layer away from the first substrate, then the first sub-electrode is closer to the liquid crystal layer than the second sub-electrode, and all of the first sub-electrode is an effective electrode that can control the rotation of the liquid crystal; the part of the second sub-electrode that overlaps with the first sub-electrode in the direction perpendicular to the first substrate is an ineffective electrode that is shielded by the first sub-electrode and has no effect on the liquid crystal; the part of the second sub-electrode that does not overlap with the first sub-electrode in the direction perpendicular to the first substrate is an effective electrode that can control the rotation of the liquid crystal.

[0065] The shapes of the first and second sub-electrodes are not limited; for example, the shapes of the first and second sub-electrodes may include, for instance, the shapes of the first and second sub-electrodes. Figure 2a The strip shape shown can have a cross-sectional shape that can be rectangular, square, trapezoidal, or inverted trapezoidal, etc. Figure 1 and Figure 5The diagram is illustrated using the example of rectangular cross-sections for the first and second sub-electrodes.

[0066] With the grating adjustment device powered on, reference Figure 3 As shown, the aforementioned grating unit 20 can form a light-transmitting unit 21 and a light-blocking unit 22. The light-transmitting unit can transmit light (equivalent to the opening of the grating unit), while the light-blocking unit cannot transmit light. Multiple grating units work together to ultimately form a grating with multiple openings. The aperture ratio of the grating unit is the area of ​​the light-transmitting unit / (the area of ​​the light-transmitting unit + the area of ​​the light-blocking unit).

[0067] The aforementioned raster adjustment device is used in 3D display devices, for reference. Figure 1 As shown, the 3D display device includes a display panel 200 and a raster adjustment device 100, which is disposed opposite to the display panel 200. The raster adjustment device can be located on the light-emitting side of the display panel; in this case, the raster adjustment device can be called a front raster. Alternatively, as... Figure 1 As shown, the grating adjustment device 100 can be set on the backlight side of the display panel 200. In this case, the grating adjustment device can be called a rear grating, which is not limited here.

[0068] The following example, using a raster adjustment device located on the backlight side of the display panel, illustrates the principle of 3D display. (Reference) Figure 6 As shown, the user's left and right eye positions are marked as viewpoint 1 and viewpoint 2 respectively (i.e., the number of viewpoints n is 2). The distance between the two eyes is the interpupillary distance L, the viewing distance (i.e., the distance between the eyes and the display panel) is marked as S, the distance between the display panel 200 and the raster adjustment device 100 is the placement height h, the width of a single pixel unit in the display panel 200 along the first direction (OA direction) is P, the width of the raster unit 20 in the raster adjustment device 100 along the first direction (OA direction) is C (also known as PitchC), wherein the width of the light-transmitting unit 21 along the first direction (OA direction) is a, and the width of the light-blocking unit 22 along the first direction (OA direction) is Ca. It should be noted that the display panel includes multiple pixel units arranged in an array, and each pixel unit may include multiple sub-pixels, such as red (R) sub-pixels, green (G) sub-pixels, or blue (B) sub-pixels.

[0069] Figure 6In this design, by controlling the opening size and position of the grating unit, when viewpoint 1 views the first display area A1 of the display panel, it corresponds to the light-transmitting unit 21, while when viewpoint 2 views the first display area A1, it corresponds to the light-blocking unit 22. That is, at the same observation time, viewpoint 1 can see the first display area A1, while viewpoint 2 cannot. Similarly, by controlling the opening size and position of the grating unit, at the same observation time, viewpoint 2 can see the second display area A2, while viewpoint 1 cannot. In this way, the image of the first display area A1 seen by viewpoint 1 and the image of the second display area A2 seen by viewpoint 2 can create parallax, thereby forming stereoscopic vision and realizing 3D display.

[0070] refer to Figure 6 As shown, based on the geometric relationships of triangles, we can obtain:

[0071] h / (h+S)=P / L (1)

[0072] C / nP=(S+h) / S (2)

[0073] a / P=(S+h) / S (3)

[0074] Using formulas (1), (2), and (3), we can obtain C = nPL / (LP) (4), h = SP / (LP) (5), and a / C = 1 / n (6). The number of viewpoints n can be 2. The width C and placement height h of the grating unit along the first direction in the grating adjustment device can be determined by referring to formulas (4) and (5), respectively. In formula (6), when the number of viewpoints n is 2, the width of the light-transmitting unit along the first direction in the grating unit is the same as the width of the light-blocking unit along the first direction.

[0075] In the actual use of 3D display devices, there are many situations that can cause crosstalk.

[0076] The first type is crosstalk caused by the user moving horizontally left or right while maintaining a constant viewing distance. (Reference) Figure 7As shown, taking the viewpoint moving to the right along the first direction (OA direction) as an example, viewpoint 1 moves from position a to position a1, and viewpoint 2 moves from position b to position b1. If the width of the light-blocking unit and the light-transmitting unit of the grating unit along the first direction remains unchanged, that is, the structure of the grating adjustment device remains the same as before adjustment, taking viewpoint 1 at positions a and a1 as examples, when viewpoint 1 is at position a, when viewing the first display area A1 of the display panel, corresponding to the light-blocking unit, viewpoint 1 cannot see the first display area at position a; however, when viewpoint 1 is at position a1, when viewing the first display area A1 of the display panel, corresponding to part of the light-blocking unit and part of the light-transmitting unit, viewpoint 1 can see the first display area at position a1. That is, when viewpoint 1 moves from position a to position a1, the display area it can view changes, resulting in crosstalk and causing adverse experiences such as nausea and dizziness for the user. Figure 7 In order to better compare the structure of the grating adjustment device before and after adjustment, the two are drawn separately.

[0077] To solve this problem, the opening position of the grating units in the grating adjustment device can be controlled according to the movement of the viewpoint, thereby matching the moved viewpoint. In this application, in each grating unit of the same group, at least two first sub-electrodes are electrically connected to different first driving lines, and at least two second sub-electrodes are electrically connected to different second driving lines. Therefore, the voltage of the corresponding first and second sub-electrodes can be controlled by multiple first driving lines and multiple second driving lines, causing part or all of the light-transmitting unit to be converted into a light-blocking unit, and vice versa, thus changing the opening position of the grating unit. (Reference) Figure 7 As shown, taking viewpoint 1 as an example, when viewpoint 1 moves from position a to position a1 (moving to the right along the first direction), by controlling the first and second drive lines, the positions of the light-blocking and light-transmitting units of the grating unit can be changed (the grating adjustment device shifts to the left in the overall effect). The adjusted grating unit is as follows: Figure 7 As shown, after adjustment, viewpoint 1 cannot see the first display area at position a1, thus ensuring that the viewing effect is consistent after the viewpoint moves, thereby reducing crosstalk.

[0078] refer to Figure 7 As shown, based on the geometric relationship of triangles, if the moving distance of viewpoint 1 is y, and the leftward movement distance of the grating adjustment device is x, then x / y = h / S, where h is the placement height and S is the viewing distance. Taking a 10.95-inch 3D display device as an example, the distribution of the first and second sub-electrodes is as follows: Figure 4As shown, the width of the first sub-electrode and the second sub-electrode along the first direction can be 4.6 μm. Each grating unit includes 20 first sub-electrodes and 20 second sub-electrodes. The pixel width P = 92.13 μm, the interpupillary distance L = 65 mm, and the observation distance S = 450 mm. Then, the grating adjustment device Pitch C = 184.52 μm. When moving horizontally left and right, the theoretical maximum crosstalk is about 5%, which meets the expected value.

[0079] That is, this application can control the voltage of the corresponding first sub-electrode and second sub-electrode through multiple first driving lines and multiple second driving lines, so that part or all of the light-transmitting unit is converted into a light-blocking unit, and part or all of the light-blocking unit is converted into a light-transmitting unit, thereby realizing the change of the opening position of the grating unit, thereby reducing the crosstalk phenomenon caused by the user moving horizontally left and right when the viewing distance remains unchanged.

[0080] The second type is crosstalk caused by changes in viewing distance. (Reference) Figure 8 As shown in Figure a, which is the line-of-sight diagram at the optimal viewing distance, where no crosstalk occurs, viewpoint 1 (left eye) can see the first display area A1, and the right eye can see the second display area A2. Figure b shows the line-of-sight diagram when the viewing distance is reduced. When the viewing distance is reduced, if the structure of the raster adjustment device remains unchanged, viewpoint 1 (left eye) can see the first display area A1 and some other display areas to the left of the first display area A1, and viewpoint 2 (right eye) can see the second display area A2 and some other display areas to the right of the second display area A2, thus causing crosstalk. Figure c shows the line-of-sight diagram when the viewing distance is increased. When the viewing distance is increased, if the structure of the raster adjustment device remains unchanged, viewpoint 1 (left eye) can see the entire first display area A1, some other display areas to the left of the first display area A1, and part of the second display area A2, and viewpoint 2 (right eye) can see the entire second display area A2, some other display areas to the right of the second display area A2, and part of the first display area A1, thus causing crosstalk. When the viewing distance changes (whether it gets farther or closer), the viewable display area changes, resulting in crosstalk and causing users to experience nausea, dizziness, or other unpleasant sensations.

[0081] To solve this problem, the aperture ratio of the grating units in the grating adjustment device can be controlled according to the movement of the viewpoint, thereby matching the moved viewpoint. In this application, in each grating unit of the same group, at least two first sub-electrodes are electrically connected to different first driving lines, and at least two second sub-electrodes are electrically connected to different second driving lines. Therefore, the voltage of the corresponding first and second sub-electrodes can be controlled by multiple first driving lines and multiple second driving lines, causing a portion of the light-transmitting unit to be converted into a light-blocking unit, thereby increasing the area of ​​the light-blocking unit and reducing the aperture ratio of the grating unit. (Reference) Figure 8As shown, some light-transmitting units are converted into light-blocking units, and the opening of the adjusted grating unit becomes smaller. After adjustment, viewpoint 1 can only see the first display area, and viewpoint 2 can only see the second display area, thereby ensuring that the viewing effect is consistent after the viewpoint moves, thus reducing crosstalk.

[0082] The adjusted aperture ratio of the grating unit is 0.5*(1-h*(LP)*|1 / S-1 / S'| / P), where S is the optimal viewing distance before the distance is shifted, and S' is the viewing distance after the distance is shifted. Furthermore, from the formula for aperture ratio, it can be deduced that the viewing distance corresponding to the maximum aperture ratio is the optimal viewing distance after the aperture ratio change. Simultaneously, based on the geometric relationship of triangles, it can be deduced that during distance shifting, the theoretical width of the grating unit in the grating adjustment device along the first direction is 2P(1+h / S).

[0083] That is, this application can control multiple first driving lines and multiple second driving lines to convert part of the light-transmitting unit into a light-blocking unit, thereby changing the aperture ratio of the grating unit and reducing crosstalk caused by the user's movement at different distances.

[0084] The third type involves crosstalk caused by changes in viewing distance combined with horizontal movement, i.e., the first and second situations occur simultaneously. In this case, the voltage of the corresponding first and second sub-electrodes can be controlled by multiple first and second drive lines, thereby controlling the size and position of the light-transmitting and light-blocking units of the grating unit, and thus controlling the aperture position and aperture ratio of the grating unit. This ensures that the viewing effect remains consistent after the viewpoint moves, thereby reducing crosstalk caused by the user's horizontal movement and distance. For details, please refer to the explanations of the first and second types mentioned above, which will not be repeated here.

[0085] In one or more embodiments, in each grating unit of the same group, all first sub-electrodes are electrically connected to different first driving lines, and all second sub-electrodes are electrically connected to different second driving lines. In this way, in each grating unit of the same group, each first sub-electrode is controlled by a different first driving line, and each second sub-electrode is controlled by a different second driving line. This allows for more precise and accurate control of the voltage of each first sub-electrode and each second sub-electrode in each grating unit of the same group. Consequently, the size and position of the light-blocking unit and the light-transmitting unit of the grating unit can be adjusted more accurately, thereby further reducing the crosstalk problem caused by viewpoint movement.

[0086] Alternatively, to reduce control complexity and facilitate implementation, refer to... Figure 2a As shown, in the grating unit, multiple first sub-electrodes 33 are arranged along the first direction OA. Figure 1The first sub-electrodes, numbered 1, 2, 3...n, are labeled t1, t2, t3...tn respectively. Multiple second sub-electrodes 34 are arranged along the first direction OA. Figure 1 The second sub-electrodes numbered 1, 2, 3...n are labeled d1, d2, d3...dn.

[0087] Among all grating units in the same group, the reference Figure 2b As shown, the first sub-electrodes with the same serial number are electrically connected to the same first driving line 41, and the second sub-electrodes with the same serial number are electrically connected to the same second driving line 42. In this way, one first driving line can control multiple first sub-electrodes with the same serial number at the same time, and one second driving line can control multiple second sub-electrodes with the same serial number at the same time. This can reduce the control difficulty and the number of driving lines, which is beneficial for saving space and reducing costs. Figure 2b Taking the application of a raster adjustment device in a 10.95-inch 3D display device as an example, the raster adjustment device can include 1280 raster units. Each raster unit includes 20 first sub-electrodes and 20 second sub-electrodes. The alternating first and second sub-electrodes are numbered 1, 2, 3..., 40. In each raster unit, the first sub-electrodes with the same number (e.g.: Figure 2b The first sub-electrode (serial number 1) is electrically connected to the same first driving line 41, and the second sub-electrode with the same serial number (e.g.: Figure 2b The first sub-electrode (numbered 2) is electrically connected to the same second drive line 42.

[0088] Figure 2a and Figure 2b This illustration uses a grating adjustment device comprising a set of grating units as an example. (Refer to...) Figure 2a As shown, the first sub-electrode marked t1 in the first grating unit on the left and the first sub-electrode marked t1 in the first grating unit on the right are both electrically connected to the first driving line marked L1. The second sub-electrode marked d1 in the first grating unit on the left and the first sub-electrode marked d1 in the first grating unit on the right are electrically connected to the second driving line marked M1. The cases of the first and second sub-electrodes with other serial numbers can be referred to the above, and will not be listed one by one here.

[0089] In this application, multiple grating units can be grouped into one group or multiple groups, which is not limited here. When multiple grating units are grouped into one group, when adjusting the viewing distance, in conjunction with the foregoing description, with the placement height h of the grating adjustment device and the pixel width P of the display panel determined, parameters such as the aperture ratio of the grating unit, the theoretical width of the grating unit, the design width deviation, and the proportion of areas with crosstalk ≤10% can be obtained at different viewing distances. For details, please refer to Table 1.

[0090] Table 1

[0091]

[0092] Table 1 shows the structure with no crosstalk at a viewing distance of 450mm. As can be seen from Table 1, at a viewing distance of 450mm and a distance offset of 50mm, the area with crosstalk ≤10% is only about 20%, indicating that distance adjustment needs further improvement. Because multiple grating units are grouped together, simultaneous adjustment of each grating unit leads to accumulated deviations, preventing further reduction of the deviation. For example, refer to [reference needed]. Figure 9 As shown, the structure of the initial multiple grating units W is as follows: Figure 9 As shown, after the viewing distance is moved, the aperture ratio of the grating unit W1 corresponding to the moved viewing distance decreases; multiple grating units are grouped together for overall adjustment, so that the initial grating unit W is transformed into the adjusted grating unit W2, and the aperture ratio of the adjusted grating unit decreases. Since the adjustment is performed at a fixed period, the deviation accumulates and will appear at positions such as region A.

[0093] Based on this, in order to further reduce crosstalk caused by moving between near and far distances, refer to Figure 9 As shown, multiple grating units are divided into multiple groups for adjustment. The adjustments between groups do not affect each other. For example, the structure of the grating unit W3 after group adjustment is as follows. Figure 9 As shown, Figure 9 In this process, group 1 converts the initial grating unit W into a grating unit with a small aperture ratio, while group 2 further adjusts the grating units that have accumulated deviations. For example, the light-blocking unit can be converted into a light-transmitting unit, similar to the aforementioned translation (left or right shift) method. This significantly reduces crosstalk caused by accumulated deviations, thereby greatly reducing crosstalk problems caused by moving the grating unit near or far. At the same time, it avoids the problem of a sharp drop in brightness due to adjusting the aperture ratio.

[0094] Using the same design parameters as Table 1, the difference is that multiple grating units are divided into 16 groups and controlled separately. In each group of grating units, the width of the first sub-electrode and the second sub-electrode is 5.21 μm, and the spacing between adjacent first sub-electrodes is 4.01 μm. Based on the above description, Table 2 can be obtained through calculation.

[0095] Table 2

[0096]

[0097] Table 2 shows that the structure has no crosstalk at a viewing distance of 450mm. As can be seen from Table 2, the maximum crosstalk is less than 5% at viewing distances of 400mm-600mm, significantly reducing crosstalk to below design requirements. It should be noted that the number of grating units is N, the maximum offset of each group is N1, and the width of the grating unit is C. Taking a design crosstalk value ≤ 5% as an example, the number of groups N can be determined by N1 / N ≤ 5% * C.

[0098] Optionally, multiple grating units are divided into multiple groups; multiple first driving lines are divided into multiple groups, the number of groups of first driving lines is the same as the number of groups of grating units, and each group of first driving lines is electrically connected to grating units in a different group; the number of first driving lines in each group is the same as the serial number of the first sub-electrode of each group of grating units; multiple second driving lines are divided into multiple groups, the number of groups of second driving lines is the same as the number of groups of grating units, and each group of second driving lines is electrically connected to grating units in a different group; the number of second driving lines in each group is the same as the serial number of the second sub-electrode of each group of grating units.

[0099] refer to Figure 10 As shown, in the first group of grating units 20 on the left, multiple first sub-electrodes 33 are electrically connected to the first group of first driving lines (labeled L1), and multiple second sub-electrodes 34 are electrically connected to the first group of second driving lines (labeled M1); in the i-th group of grating units on the right, multiple first sub-electrodes are electrically connected to the i-th group of first driving lines (labeled L2), and multiple second sub-electrodes are electrically connected to the i-th group of second driving lines (labeled M2), where i is a positive integer.

[0100] refer to Figure 11 As shown, taking the application of a grating adjustment device in a 10.95-inch 3D display device as an example, the grating adjustment device can include 1280 grating units. Each grating unit includes 20 first sub-electrodes and 20 second sub-electrodes. The alternating first and second sub-electrodes are numbered 1, 2, 3..., 40. In the same group of grating units, the first sub-electrodes with the same number are electrically connected to the same first driving line 41, and the second sub-electrodes with the same number are electrically connected to the same second driving line 42. Sixteen consecutively arranged grating units 20 can form a group, and a total of 80 groups can be formed, for a total of 80 * 60 = 1280 grating units.

[0101] In this way, the first sub-electrodes of different groups of grating units are electrically connected to the first driving lines of different groups, and the second sub-electrodes of different groups of grating units are electrically connected to the second driving lines of different groups. By controlling multiple groups of grating units through multiple groups of first driving lines and multiple groups of second driving lines, the aperture position and aperture ratio of the grating units can be adjusted in groups, thereby further reducing the crosstalk problem.

[0102] Optionally, in order to provide drive signals to the first drive line and the second drive line, the grating adjustment device further includes at least one drive unit; each group of first drive lines and each group of second drive lines are electrically connected to at least one drive unit.

[0103] The specific number of driver units is not limited here; for example, it can be shown as follows: Figure 2a The diagram shows a drive unit 5, or, as... Figure 10 The diagram shows two driving units 5. Each driving unit may include a driving chip (IC), which can be directly connected to the first and second driving lines to provide a driving voltage signal. (Reference) Figure 1 As shown, the grating adjustment device also includes an FPC (Flexible Printed Circuit) 6, and the drive unit 5 can be attached to the FPC 6.

[0104] The first drive lines of each of the above groups can be as follows: Figure 2a All of the above are electrically connected to a single drive unit, or, as shown... Figure 10 As shown, each group of first drive lines can be divided into two parts: one part is electrically connected to one drive unit, and the other part is electrically connected to another drive unit; this is not limited here. Similarly, the above-mentioned groups of second drive lines can be as follows: Figure 2a All of them are electrically connected to one drive unit. Alternatively, each group of second drive lines can be divided into two parts, one part of which is electrically connected to one drive unit and the other part of which is electrically connected to another drive unit. This is not limited here.

[0105] Optionally, to improve driving capability and response speed, refer to Figure 10 As shown, each group of first drive lines is divided into a first part (located in...). Figure 1 The lower part of the grating unit) and the second part (located in Figure 10 (located above the grating unit), the first part and the second part are electrically connected to different driving units respectively. Figure 10 In the diagram, the first drive line marked L1 is one group, and the first drive line marked L2 is another group. The first part is electrically connected to the drive unit 5 below, and the second part is electrically connected to the drive unit 5 above.

[0106] refer to Figure 10 As shown, each group of second drive lines is divided into a third part (located in...). Figure 10 The lower part of the grating unit) and the fourth part (located in Figure 10 The third and fourth parts are electrically connected to different drive units 5, respectively, located above the grating unit. Figure 10In the middle, the second drive line marked M1 is a group, the second drive line marked M2 is a group, the third part is electrically connected to the drive unit 5 below, and the fourth part is electrically connected to the drive unit 5 above.

[0107] Further optionally, to avoid interference caused by overly dense wiring, refer to... Figure 10 As shown, the orthographic projection of the first part on the first substrate and the orthographic projection of the second part on the first substrate are respectively disposed on opposite sides of the orthographic projection of the first electrode layer on the first substrate. Figure 10 The upper and lower sides of the first electrode layer); the orthographic projection of the third part onto the first substrate and the orthographic projection of the fourth part onto the first substrate are respectively disposed on opposite sides of the orthographic projection of the first electrode layer onto the first substrate. Figure 10 (The top and bottom sides of the middle).

[0108] Optionally, to make full use of each drive unit and for ease of design, refer to Figure 10 As shown, the first part (e.g., the first driving line L1 below the grating unit) and the second part (e.g., the first driving line L1 above the grating unit) are mirror symmetrical, and the third part (e.g., the second driving line M1 below the grating unit) and the fourth part (e.g., the second driving line M1 above the grating unit) are mirror symmetrical. At this time, the number of first driving lines included in the first part and the number of first driving lines included in the second part are the same, and the number of second driving lines included in the third part and the number of second driving lines included in the fourth part are the same.

[0109] To further reduce mutual interference between adjacent wirings, refer to Figure 10 As shown, in each group of grating units, the first sub-electrode with an odd number (e.g., marked as t1, t3, t5, etc.) is electrically connected to the first driving line of the first part (e.g., the first driving line L1 below the grating unit), and the first sub-electrode with an even number (e.g., marked as t2, t4, t6, etc.) is electrically connected to the first driving line of the second part (e.g., the first driving line L1 above the grating unit).

[0110] refer to Figure 10 As shown, in each group of grating units, the second sub-electrode with odd-numbered serial numbers (e.g., marked as d1, d3, d5, etc.) is electrically connected to the second driving line of the third part (e.g., the second driving line M1 below the grating unit), and the second sub-electrode with even-numbered serial numbers (e.g., marked as d2, d4, d5, etc.) is electrically connected to the second driving line of the fourth part (e.g., the second driving line M1 above the grating unit).

[0111] In one or more embodiments, reference is made to Figure 10As shown, the grating adjustment device also includes a grating region G1 and a non-grating region G2 connected to the grating region G1; a first electrode layer (including a first sub-electrode 33) and a second electrode layer (including a second sub-electrode 34) are disposed in the grating region G1, and multiple first driving lines 33 and multiple second driving lines 34 are disposed in the non-grating region G2.

[0112] Of course, the first driving line and the second driving line mentioned above can also be set in the grating area; however, if the first driving line and the second driving line are set in the grating area, brightness moiré patterns may be formed, which may affect the grating unit. Therefore, the first driving line and the second driving line can be set in the non-grating area.

[0113] To reduce wiring and simplify the process, one end of the first sub-electrode extends into the non-grating area and is connected to the corresponding first driving line; one end of the second sub-electrode extends into the non-grating area and is connected to the corresponding second driving line. This eliminates the need for additional leads, enabling electrical connection between the first sub-electrode and the first driving line, and between the second sub-electrode and the second driving line, which is simple and easy to implement.

[0114] Further optional, see reference Figure 10 As shown, in the grating unit, multiple first sub-electrodes are arranged along the first direction OA. Figure 10 The first sub-electrodes, numbered 1, 2, 3...n, are labeled t1, t2, t3...tn respectively. Multiple second sub-electrodes are then arranged along the first direction OA. Figure 10 The second sub-electrodes, numbered 1, 2, 3...n, are labeled d1, d2, d3...dn; the first and second sub-electrodes each include a corresponding first end ( Figure 1 The lower end of each sub-electrode) and the second end ( Figure 1 (The upper end of each sub-electrode).

[0115] refer to Figure 10 As shown, in the grating unit, the first end of the first sub-electrode 33 and the second sub-electrode 34 with odd numbers ( Figure 1 The lower ends of each sub-electrode extend to the non-grating region G2, and the second ends of the even-numbered first sub-electrode 33 and second sub-electrode 34 ( Figure 1 The upper end of each sub-electrode extends to the non-grating region G2, thereby realizing that the first sub-electrode with an odd number is electrically connected to the first driving line of the first part, the first sub-electrode with an even number is electrically connected to the first driving line of the second part, and at the same time, the second sub-electrode with an odd number is electrically connected to the second driving line of the third part, and the second sub-electrode with an even number is electrically connected to the second driving line of the fourth part.

[0116] In one or more embodiments, in order to increase the light output of the grating adjustment device, the materials of the first sub-electrode and the second sub-electrode include transparent conductive materials. For example, the transparent conductive material may include indium tin oxide (ITO).

[0117] In one or more embodiments, reference is made to Figure 10 As shown, the first sub-electrode and the second sub-electrode include strip-shaped electrodes. The cross-sectional shape of the strip-shaped electrode may include a rectangle, a square, a regular trapezoid, or an inverted trapezoid, etc.

[0118] This application also provides a 3D display device, see reference. Figure 1 As shown, it includes a display panel 200 and the aforementioned raster adjustment device 100; the raster adjustment device 100 is disposed opposite to the display panel 200.

[0119] The raster adjustment device can be located on the light-emitting side of the display panel; in this case, the raster adjustment device can be called a front raster. Or, as... Figure 1 As shown, the grating adjustment device 100 can be set on the backlight side of the display panel 200. In this case, the grating adjustment device can be called a rear grating, which is not limited here.

[0120] The type of display panel is not limited; it can be a TN (Twisted Nematic), VA (Vertical Alignment), IPS (In-Plane Switching), or ADS (Advanced Super Dimension Switching) liquid crystal display panel, etc. Furthermore, if the display panel is a liquid crystal display panel, the 3D display device may also include a backlight module to provide backlighting. If the raster adjustment device is located on the backlight side of the display panel, the backlight module can be located on the backlight side of the raster adjustment device. Conversely, if the raster adjustment device is located on the light-emitting side of the display panel, the backlight module can also be located on the backlight side of the display panel.

[0121] This 3D display device can significantly reduce crosstalk during movement, thereby greatly improving user experience and product quality.

[0122] Optionally, the display panel includes a touch display panel, such as... Figure 1 As shown, the raster adjustment device 100 is located on the backlight side of the display panel 200; this avoids the influence of the raster adjustment device on the touch effect, thereby improving the touch quality.

[0123] The touch display panel can use TDDI (Touch and Display Integration) touch technology. There are no restrictions on the touch structure, which can be obtained according to relevant technologies.

[0124] Optionally, to achieve a 3D display effect, refer to Figure 1 As shown, the raster adjustment device 100 includes a raster area G1 and a non-raster area G2 connected to the raster area G1; the display panel 200 includes a display area AA and a non-display area BB connected to the display area AA; wherein the display area AA covers the raster area G1, and the non-display area BB covers the non-raster area G2.

[0125] The display area of ​​the aforementioned display panel is used to set pixels to achieve display; the non-display area is used to set the driving circuit, etc.

[0126] Optional, for the purpose of simplifying the process, refer to Figure 1 As shown, the grating adjustment device 100 includes a first substrate 1 and a second substrate 2 disposed opposite to each other, and the display panel 200 includes a third substrate 9 and a fourth substrate 10 disposed opposite to each other; the second substrate 2 is bonded to the third substrate. For example, it can be adopted that... Figure 1 The double-sided tape 13 shown is applied. Additionally, to avoid the influence of stray light, refer to... Figure 1 As shown, a first polarizing layer 16 may also be disposed on the outer side of the first substrate 1 of the grating adjustment device 100. If the display panel is a liquid crystal display panel, then refer to... Figure 1 As shown, the display panel may further include a second polarizing layer 11 and a third polarizing layer 12, wherein the second polarizing layer 11 is disposed on the side of the third substrate 9 close to the second substrate 2, and the third polarizing layer 12 is disposed on the side of the fourth substrate 10 away from the third substrate 9.

[0127] Of course, such as Figure 1 As shown, the aforementioned display panel may further include structures such as a color filter layer 17, a first sealing adhesive 15, a driver chip 7, and a circuit board 8; the raster adjustment device may further include structures such as a second sealing adhesive 14 and an insulating layer 30. Only the content related to the inventive point is described here; other structures can be obtained by referring to relevant technologies.

[0128] Optionally, in order to track the movement of the human eye in real time, the 3D display device also includes an imaging unit, the grating adjustment device being electrically connected to the imaging unit and configured to adjust the opening position and / or aperture ratio of the grating unit of the grating adjustment device according to the imaging information of the imaging unit.

[0129] The aforementioned shooting unit may include a camera. The grating adjustment device can analyze information such as the position of the human eye based on the shooting information of the shooting unit and relevant eye-tracking technology, and adjust the opening position and / or aperture ratio of the grating unit in real time to match the viewpoint position after movement as much as possible, thereby reducing crosstalk during movement and improving user experience and product quality.

[0130] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A grating adjustment device, characterized by, The grating adjustment device, which is used in 3D display devices, includes a first electrode layer, a second electrode layer, and a first substrate and a second substrate disposed opposite to each other. The first electrode layer is disposed on the side of the first substrate closer to the second substrate, and the second electrode layer is disposed on the side of the second substrate closer to the first substrate. The first electrode layer includes a first sub-electrode layer and a second sub-electrode layer stacked together. The first sub-electrode layer includes a plurality of first sub-electrodes arranged along a first direction, and the second sub-electrode layer includes a plurality of second sub-electrodes arranged along the first direction. The orthographic projections of the first sub-electrodes on the first substrate and the orthographic projections of the second sub-electrodes on the first substrate are alternately arranged. The grating adjustment device further includes multiple first driving lines, multiple second driving lines, and multiple grating units arranged along the first direction; the grating unit includes multiple first sub-electrodes and multiple second sub-electrodes, and is configured such that: when the grating adjustment device is powered on, the grating unit can form a light-transmitting unit and a light-blocking unit, and the opening position and / or aperture ratio of the grating unit is adjustable; The plurality of grating units are divided into multiple groups; in each grating unit of the same group, at least two first sub-electrodes are electrically connected to different first driving lines, and at least two second sub-electrodes are electrically connected to different second driving lines. Wherein, the portion of the first sub-electrode that overlaps with the second sub-electrode along a direction perpendicular to the first substrate is designated as an invalid electrode, and the portion of the first sub-electrode that does not overlap with the second sub-electrode along a direction perpendicular to the first substrate is designated as an effective electrode, and all of the second sub-electrodes are designated as effective electrodes; The first driving lines are divided into multiple groups, and the number of groups of the first driving lines is the same as the number of groups of the grating units. Each group of the first driving lines is electrically connected to the grating units of a different group. The number of the first driving lines in each group is the same as the number of the first sub-electrodes of the grating units in each group. The second driving lines are divided into multiple groups, and the number of groups of the second driving lines is the same as the number of groups of the grating units. Each group of the second driving lines is electrically connected to the grating units of a different group. The number of the second driving lines in each group is the same as the number of the second sub-electrodes of the grating units in each group.

2. The grating adjustment device according to claim 1, characterized in that, In each of the grating units in the same group, all the first sub-electrodes are electrically connected to different first driving lines, and all the second sub-electrodes are electrically connected to different second driving lines.

3. The grating adjustment device according to claim 2, characterized in that, In the grating unit, a plurality of first sub-electrodes are arranged along the first direction, and a plurality of second sub-electrodes are arranged along the first direction; In all the grating units in the same group, the first sub-electrodes with the same serial number are electrically connected to the same first driving line, and the second sub-electrodes with the same serial number are electrically connected to the same second driving line.

4. The grating adjustment device according to claim 3, characterized in that, The grating adjustment device further includes at least one driving unit; each group of first driving lines and each group of second driving lines are electrically connected to at least one of the driving units.

5. The grating adjustment device according to claim 4, characterized in that, Each group of first drive lines is divided into a first part and a second part, and the first part and the second part are respectively electrically connected to different drive units; Each group of second drive lines is divided into a third part and a fourth part, and the third part and the fourth part are electrically connected to different drive units respectively.

6. The grating adjustment device according to claim 5, characterized in that, The orthographic projection of the first portion on the first substrate and the orthographic projection of the second portion on the first substrate are respectively disposed on opposite sides of the orthographic projection of the first electrode layer on the first substrate; The orthographic projection of the third part on the first substrate and the orthographic projection of the fourth part on the first substrate are respectively disposed on opposite sides of the orthographic projection of the first electrode layer on the first substrate.

7. The grating adjustment device according to claim 6, characterized in that, The first part and the second part are mirror images of each other, and the third part and the fourth part are mirror images of each other.

8. The grating adjustment device according to claim 6, characterized in that, In each group of grating units, the first sub-electrode with an odd number is electrically connected to the first driving line of the first part, and the first sub-electrode with an even number is electrically connected to the first driving line of the second part. In each group of grating units, the second sub-electrode with an odd number is electrically connected to the second driving line of the third part, and the second sub-electrode with an even number is electrically connected to the second driving line of the fourth part.

9. The grating adjustment device according to claim 1, characterized in that, The grating adjustment device further includes a grating region and a non-grating region connected to the grating region; The first electrode layer and the second electrode layer are disposed in the grating region, and multiple first driving lines and multiple second driving lines are disposed in the non-grating region.

10. The grating adjustment device according to claim 9, characterized in that, One end of the first sub-electrode extends into the non-grating region and is connected to the corresponding first driving line; One end of the second sub-electrode extends into the non-grating region and is connected to the corresponding second driving line.

11. The grating adjustment device according to claim 10, characterized in that, In the grating unit, a plurality of first sub-electrodes are arranged along the first direction, and a plurality of second sub-electrodes are arranged along the first direction; the first sub-electrodes and the second sub-electrodes respectively include a first end and a second end opposite to each other; In the grating unit, the first ends of the first sub-electrode and the second sub-electrode with odd numbers extend into the non-grating region, and the second ends of the first sub-electrode and the second sub-electrode with even numbers extend into the non-grating region.

12. The grating adjustment device according to claim 1, characterized in that, The materials of the first sub-electrode and the second sub-electrode include transparent conductive materials.

13. The grating adjustment device according to claim 1, characterized in that, The first sub-electrode and the second sub-electrode include strip-shaped electrodes.

14. A 3D display device, comprising a display panel and a raster adjustment device according to any one of claims 1-13; the raster adjustment device is disposed opposite to the display panel.

15. The 3D display device according to claim 14, characterized in that, The display panel includes a touch display panel, and the raster adjustment device is disposed on the backlight side of the display panel.

16. The 3D display device according to claim 15, characterized in that, The grating adjustment device includes a grating area and a non-grating area connected to the grating area; the display panel includes a display area and a non-display area connected to the display area; The display area covers the raster area, and the non-display area covers the non-raster area.

17. The 3D display device according to claim 16, characterized in that, The grating adjustment device includes a first substrate and a second substrate disposed opposite to each other, and the display panel includes a third substrate and a fourth substrate disposed opposite to each other; the second substrate is bonded to the third substrate.

18. The 3D display device according to claim 14, characterized in that, The 3D display device further includes an imaging unit, and the grating adjustment device is electrically connected to the imaging unit and configured to adjust the opening position and / or aperture ratio of the grating unit of the grating adjustment device according to the imaging information of the imaging unit.

Images