Metaverse 3D display system, method, and related devices

The metaverse 3D display system addresses the challenges of existing naked-eye 3D technologies by using a liquid crystal grating and display module with aligned grating units and voltage-adjusting processors, achieving high-definition 3D imaging with reduced hardware complexity and enhanced immersion.

JP7848397B2Active Publication Date: 2026-04-20FUTURE TECH XIANG YANG CO LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
FUTURE TECH XIANG YANG CO LTD
Filing Date
2023-06-25
Publication Date
2026-04-20

AI Technical Summary

Technical Problem

Existing naked-eye 3D display technologies face challenges in achieving high precision, uniformity, and synchronization, leading to high hardware demands and costs, while current methods require complex encoding and high-speed scanning, limiting their practical application in the Metaverse.

Method used

A metaverse 3D display system utilizing a liquid crystal grating and display module, where grating units align perpendicularly or at an angle with pixel units, and a processor adjusts voltage based on pixel depth values to enhance 3D imaging, combined with an optical system for realistic depth perception.

Benefits of technology

The system achieves a more realistic 3D display effect by electrically controlling the liquid crystal grating, allowing for high-definition 3D imaging without auxiliary devices, enhancing user immersion and reducing hardware complexity.

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Abstract

A metaverse 3D display system (10), method, and related devices are used to display a realistic 3D effect. The metaverse 3D display system (10) includes a 3D display (101) and a processor (102). The 3D display (101) includes a liquid crystal grating (1011), a liquid crystal display module (1012), and a backlight module (1013) that are laminated in order from top to bottom. The liquid crystal grating (1011) is composed of grating units arranged in an array. The grating units correspond one-to-one to the pixel units of the liquid crystal display module (1012). The arrangement direction of the grating units and the long side direction of the sub-pixels of the pixel units form a perpendicular or an angle less than 45 degrees. The processor (102) adjusts the voltage applied to the corresponding grating units based on the pixel depth values of the 3D image to be displayed. The metaverse 3D display system (10) displays a 3D image on the liquid crystal display module (1012) through the liquid crystal grating (1011).
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Description

Technical Field

[0001] This application relates to three-dimensional image display technology, and particularly to 3D display systems, methods, and related devices for the metaverse.

Background Art

[0002] The Metaverse is a virtual world that uses technology to link and create, map and interact with the real world, and is a digital living space with a new social system. Currently, most display terminals of the Metaverse adopt head-mounted AR devices. However, like the various forms of communication terminals such as smartphones, watches, tablets, and head-mounted types, AR is not the only display terminal unique to the Metaverse. The movie "Avatar" demonstrated holographic floating air imaging, which has become the ideal display terminal for the metaverse for people. Controlling the actions and social interactions in the other world of "Avatar" is the prototype and ultimate dream of the Metaverse. When the movie "Avatar 2" was released more than 10 years later, people finally realized a 3D movie screen without glasses, demonstrating a leap in 3D display technology.

[0003] In 3D display systems, naked-eye 3D display, due to its characteristics, allows users to view 3D effects without wearing auxiliary glasses or helmets. Furthermore, its realistic depth of field and three-dimensionality significantly enhance the visual impact and immersion of the viewing experience, making it an ideal display product for product dissemination, public advertising, and video broadcasting. Currently, naked-eye 3D imaging is structurally divided into liquid crystal gratings, liquid crystal electronic gratings, electronic gratings, physical column mirror gratings, and physical slit gratings, and in principle, into slit grating type, column lens grating type, and projection grating type. Due to their characteristics, both slit grating type and column lens grating type require encoding processing of the display content, and there are high demands for the precision and uniformity of the structure of the slit grating and column lens grating. Multi-field projection requires a large volume and processing of multiple projection data, resulting in high hardware demands. On the other hand, high-speed scanning structures are simple, but high-speed projectors are expensive, and there are extremely high demands for synchronization between the rotation structure and the projector. Therefore, there is room for improvement in existing naked-eye 3D technology. [Overview of the project]

[0004] This application provides a metaverse 3D display system, method, and related devices for achieving a more realistic 3D display effect based on liquid crystal electronic grating.

[0005] A first aspect of the present invention provides a metaverse 3D display system comprising a 3D display and a processor. The 3D display includes a liquid crystal grating, a liquid crystal display module, and a backlight module, which are bonded together from top to bottom. The liquid crystal grating consists of grating units arranged in an array. Each grating unit corresponds one-to-one with a pixel unit of the liquid crystal display module. The arrangement direction of the grating units and the direction of the long side of the subpixels of the pixel units are perpendicular or at an angle of less than 45 degrees. The processor adjusts the voltage applied to the corresponding grating unit based on the pixel depth value of the 3D image to be displayed. The metaverse 3D display system displays a 3D image in the liquid crystal display module via the liquid crystal grating.

[0006] A second aspect of the present application provides a 3D display method applicable to the metaverse. The 3D imaging system includes a mobile device equipped with a camera and a target peripheral device. The target peripheral device includes a camera installed in the mobile device for imaging a calibration target and acquiring a first left side view and a first right side view through the lens of the target peripheral device, and further for imaging a target scene and acquiring a second left side view and a second right side view; a calibration unit for calibrating the mobile device based on the first left side view and the first right side view; and a splice unit for stitching together a 3D image based on the second left side view and the second right side view.

[0007] A third aspect of the present application provides a computer device comprising at least one processor, memory, and transceiver. The memory is for storing program code. The processor invokes the program code in the memory to perform steps of a 3D display method applied to the metaverse described in the second aspect.

[0008] A fourth aspect of the present application provides a computer storage medium containing instructions. When the instructions are running in the computer, the computer performs steps of a 3D display method applied to the metaverse described in the second aspect.

[0009] As described above, in the embodiment provided by the present application, the metaverse 3D display system comprises a 3D display and a processor. The 3D display includes a liquid crystal grating, a liquid crystal display module, and a backlight module, which are bonded together from top to bottom. The liquid crystal grating consists of grating units arranged in an array. Each grating unit corresponds one-to-one with a pixel unit of the liquid crystal display module. The arrangement direction of the grating units and the direction of the long side of the subpixels of the pixel units are perpendicular or at an angle of less than 45 degrees. The processor adjusts the voltage applied to the corresponding grating unit based on the pixel depth value of the 3D image to be displayed. The metaverse 3D display system displays the 3D image in the liquid crystal display module via the liquid crystal grating. As can be seen, by electrically controlling the electric field distribution of the liquid crystal and adjusting the voltage applied to the corresponding grating unit based on the pixel depth value of the 3D screen, the 3D screen can be displayed more realistically. [Brief explanation of the drawing]

[0010] [Figure 1] This is a virtual structural diagram of the metaverse 3D display system provided by the embodiment of the present application. [Figure 2a] This is a scene application diagram of the metaverse 3D display system provided by the embodiment of the present invention. [Figure 2b] This is a diagram of an array of possible components provided by the embodiments of the present application. [Figure 3] This is a flowchart of a method for capturing 3D images provided by an embodiment of the present invention. [Figure 4] This is a schematic diagram of the server hardware configuration provided by the embodiment of the present invention. [Modes for carrying out the invention]

[0011] The technical aspects of the embodiments of this application will be described clearly and completely below, in accordance with the drawings of the embodiments of this application. Clearly, the embodiments described are only a selection of embodiments of this application, not all embodiments.

[0012] The metaverse is a virtual world that uses scientific and technological means to link and create, mapping and interacting with the real world, and is a digital living space equipped with a new social system. Its essence lies in the process of virtualizing and digitizing the real world, requiring massive modifications to content production, economic systems, user experiences, and real-world content.

[0013] Based on this concept, the present application provides a metaverse 3D display system. Figure 1 is a schematic diagram of the structure of a metaverse 3D display system 10 provided by an embodiment of the present application. The metaverse 3D display system 10 comprises a 3D display 101 and a processor 102. Here, the 3D display includes a liquid crystal grating 1011 bonded from top to bottom, a liquid crystal display module 1012, and a backlight module 1013. The liquid crystal grating 1011 consists of grating units arranged in an array. The grating units correspond one-to-one with the pixel units of the liquid crystal display module 1012. The arrangement direction of the grating units and the direction of the long side of the subpixels of the pixel units are perpendicular or at an angle of less than 45 degrees. The processor 102 is used to adjust the voltage applied to the corresponding grating units based on the pixel depth value of the 3D screen to be displayed. The metaverse 3D display system 10 displays a 3D image in the liquid crystal display module via the liquid crystal grating.

[0014] When the 3D display 101 is in 3D display mode, the processor 102 applies voltage to the grating unit included in the liquid crystal grating 1011. When the 3D display 101 switches from 3D display mode to 2D display mode, the processor 102 stops applying voltage to the grating unit.

[0015] Selectively, the processor 102 adjusts the voltage value of the electrode corresponding to the grating unit corresponding to each pixel based on the depth information change value corresponding to each pixel in the 3D screen to be displayed. The aforementioned 3D screen includes a 2D screen and a corresponding depth image. When the pixel value changes, the corresponding depth value changes in accordance with the pixel value. The side of the aforementioned liquid crystal grating facing the liquid crystal screen is the ground electrode (also called a planar electrode), and the other side is provided with an array of striped electrodes. The aforementioned striped electrodes correspond one-to-one with the pixel units of the liquid crystal display module, are located at the center of the pixel, and are perpendicular to the long side direction of the subpixel. Specifically, refer to Figure 2b. Figure 2b is an array diagram of one possible component provided by an embodiment of the present invention. As shown in Figure 2, the arrangement direction of the aforementioned grating units and the long side direction of the subpixels of the pixel units are perpendicular or at an angle of less than 45 degrees. The stripe electrodes are located at the center of the pixel and perpendicular to the long side direction of the subpixels, i.e., the RGB subpixels. An AC voltage is applied to each of the aforementioned stripe electrodes at a specific frequency relative to the ground electrode. Here, the voltage applied to each stripe electrode changes according to the depth value of the corresponding pixel, and changes the focal length of the columnar lens equivalent to the grating unit corresponding to the corresponding pixel.

[0016] Optionally, the metaverse 3D display system further includes an optical system. Pixels of the liquid crystal display module 1012 are focused into the space in front of the 3D display via lenses. The aforementioned optical system reflects the pixels of the liquid crystal display module to display them as virtual images. Here, pixels located in front of the first reflective mirror at the focal point exhibit a screen-in effect. Pixels located behind the first reflective mirror at the focal point exhibit a screen-out effect. The aforementioned optical system includes one or more reflections and includes one or more types of reflective mirrors, such as concave reflective mirrors, convex reflective mirrors, or planar reflective mirrors. The aforementioned first reflective mirror is the mirror of the last reflection.

[0017] When the 3D display 101 is in 3D display mode, a non-zero base voltage is applied to all electrodes. This base voltage is used to virtualize the pixels of the liquid crystal display module via the optical system and, together with the optical system, determines the minimum viewing angle range of the metaverse 3D display system. Here, V = A + D * B, where V represents the voltage applied to the electrode of the corresponding pixel, A represents the base voltage, D represents the depth value of the corresponding pixel, and B is a constant coefficient.

[0018] Furthermore, the aforementioned backlight module includes multiple light source arrays arranged sequentially at intervals. A gap-filling layer is further included between the light source arrays and the liquid crystal display module. The thickness of this gap-filling layer is M, where M = L * D / N. L is used to represent the viewing distance, which is the distance from the human eye to the liquid crystal display module. D is the number of pixels. Sub This is the minimum size of the unit. N is used to represent the interpupillary distance, which is the true distance between the viewer's two eyes. Specifically, L, which represents the viewing distance, is detected and determined in real time by a distance sensor (e.g., TOF sensor, infrared distance sensor) installed in the metaverse 3D display system, or is preset to 65 cm, which is the midpoint of the mainstream viewing distance range (50 cm to 80 cm) of the metaverse scene. This default value can be manually adjusted from the user interface. D is the minimum dimension of the pixel subunit and is a fixed value determined by the hardware design of the liquid crystal display module. N is used to indicate the interpupillary distance, which is the actual distance between the viewer's eyes. N is collected and determined in real time by an interpupillary distance detection module (e.g., camera image recognition) built into the system, or is the average interpupillary distance that is manually entered in advance from the user interface. For example, this average interpupillary distance can be preset to 63 mm, which is the average interpupillary distance of people.

[0019] Optionally, the above-described metaverse 3D display system further includes an electrically controlled liquid crystal lens panel that is attached to the surface of the liquid crystal display module. When the electrically controlled liquid crystal lens panel is operating, the above-described autostereoscopic 3D display system is in 3D display mode. When the electrically controlled liquid crystal lens panel is not operating, the above-described 3D display system is in 2D display mode.

[0020] Referring to FIG. 2. To more easily understand the embodiments of the present application, pixel 1 and pixel 2 are respectively projected onto a reflection mirror through corresponding liquid crystal lenses to generate virtual images of pixel 1 and pixel 2. The depth of field difference formed between the virtual images of pixel 1 and pixel 2 is mapped to the viewer's human eye. Then, the viewer's brain synthesizes the images seen by the left and right eyes into an image with a 3D effect.

[0021] Above, the embodiments of the present application have been described from the perspective of the metaverse 3D display system. Below, the embodiments of the present application will be described from the perspective of the 3D display method applied to the metaverse.

[0022] Referring to FIG. 3. FIG. 3 is a flowchart of a 3D display method applied to the metaverse provided by the embodiments of the present application. The above-described 3D display method includes a 3D display. The above-described 3D display includes a liquid crystal grating, a liquid crystal display module, and a backlight module that are sequentially laminated from top to bottom. The liquid crystal grating consists of grating units arranged in an array. The grating units correspond one-to-one to the pixel units of the liquid crystal display module. The arrangement direction of the above-described grating units forms an angle perpendicular or less than 45 degrees with respect to the long side direction of the sub-pixels of the pixel units. Specifically, it includes the following steps.

[0023] In step 301, based on the pixel depth value of the 3D screen of the display target, the voltage applied to the corresponding grating unit is adjusted.

[0024] In step 302, a 3D image is displayed on the liquid crystal display module through the liquid crystal grating.

[0025] Specifically, based on the depth information change value corresponding to each pixel in the 3D screen to be displayed, the voltage value of the electrode corresponding to the grating unit corresponding to each pixel is adjusted. The aforementioned 3D image consists of a 2D image and a corresponding depth image. When the pixel value changes, the corresponding depth value changes accordingly. The side of the liquid crystal grating facing the liquid crystal screen is the ground electrode, and stripe electrodes arranged in an array are provided on the other side. The aforementioned stripe electrodes correspond one-to-one to the pixel units of the liquid crystal display module. The aforementioned stripe electrodes are located at the center of the pixel and are perpendicular to the long side direction of the sub-pixel. For each of the aforementioned stripe electrodes, an alternating voltage with respect to the aforementioned ground electrode is applied at a specific frequency. Here, the voltage applied to each stripe electrode changes according to the depth value of the corresponding pixel, and changes the focal length of the columnar lens equivalent to the grating unit corresponding to the corresponding pixel.

[0026] When the 3D display is in the 3D display mode, a voltage is applied to the grating unit included in the liquid crystal grating. When the 3D display switches from the 3D display mode to the 2D display mode, the voltage application to the grating unit is stopped. When the 3D display is in the 3D display mode, a non-zero base voltage is applied to all electrodes. The aforementioned base voltage virtualizes the pixels of the liquid crystal display module through the optical system and, in conjunction with the optical system, determines the minimum viewing angle range of the metaverse 3D display system. Here, let V = A + D * B. V represents the voltage applied to the electrode of the corresponding pixel as described above, A represents the aforementioned base voltage, D represents the depth value of the corresponding pixel as described above, and B is a constant coefficient. Also, in actual applications, when the viewing angle range is smaller than a preset value, the thickness of the liquid crystal cell in the optical system cannot be increased. If the liquid crystal cell is too thick, it is necessary to fill it with spacers. The aforementioned spacers are a kind of fine particle transparent glass beads and may affect the display screen.

[0027] Optionally, the metaverse 3D display system further comprises an electrically controlled liquid crystal lens panel attached to the surface of a liquid crystal display module. When the electrically controlled liquid crystal lens panel is operating, the naked-eye 3D display system is in 3D display mode. When the electrically controlled liquid crystal lens panel is not operating, the aforementioned 3D display system is in 2D display mode. Structurally, the aforementioned electrically controlled liquid crystal lens panel specifically includes a first lens substrate, a second lens substrate positioned opposite the first lens substrate, and liquid crystal located between the first and second lens substrates. The first lens substrate has a plurality of individual first electrodes arranged in a matrix. In this embodiment, the material of the aforementioned transparent conductive layer may be indium tin oxide (ITO) or indium zinc oxide (IZO) so that the electrodes do not affect the light transmission capability of the electrically controlled liquid crystal lens panel. The first electrodes are connected to a first drive circuit via a first thin-film transistor (not shown). The second electrodes are connected to a common potential, which is ground or a fixed voltage. In this embodiment, the second electrodes may be a continuous transparent conductive layer. The display is divided into three subpixel sets, RGB. One of these subpixel sets, R (the other two are processed similarly), is divided along a direction perpendicular to the center line of the liquid crystal microlens, and the R pixel set is divided into a left subpixel set and a right subpixel set. The left eye image and the right eye image are displayed on these subpixel sets, respectively. The images displayed on the two pixel sets are refracted by the corresponding liquid crystal microlenses and projected onto the viewer's left and right eyes, respectively. The brain then integrates the left eye image and the right eye image to produce a 3D stereoscopic image. Not only does horizontal viewing show a 3D display effect, but vertical viewing can also show a 3D effect, enhancing the viewing angle of the 3D / 2D switchable display device.

[0028] Furthermore, the backlight module includes a plurality of light source arrays arranged sequentially at intervals. A gap-filling layer is further included between the light source arrays and the liquid crystal display module. The thickness of the aforementioned gap-filling layer is M, where M = L * D / N. L is used to represent the viewing distance, which is the distance from the human eye to the liquid crystal display module. D is the number of pixels. Sub This is the minimum size of the unit. N is used to represent the interpupillary distance, which is the true distance between the viewer's two eyes. Specifically, L, which represents the viewing distance, is detected and determined in real time by a distance sensor (e.g., TOF sensor, infrared distance sensor) installed in the metaverse 3D display system, or is preset to 65 cm, which is the midpoint of the mainstream viewing distance range (50 cm to 80 cm) of the metaverse scene. This default value can be manually adjusted from the user interface. D is the minimum dimension of the pixel subunit and is a fixed value determined by the hardware design of the liquid crystal display module. N is used to indicate the interpupillary distance, which is the actual distance between the viewer's eyes. N is collected and determined in real time by an interpupillary distance detection module (e.g., camera image recognition) built into the system, or is the average interpupillary distance that is manually entered in advance from the user interface. For example, this average interpupillary distance can be preset to 63 mm, which is the average interpupillary distance of people.

[0029] Figure 4 shows the configuration of a server provided by the present invention. As shown in Figure 4, the server 400 includes at least one processor 401, at least one network interface 404 or other user interface 403, memory 405, and at least one communication bus 402. The server 400 optionally includes a user interface 403 such as a display, keyboard, or click device. The memory 405 may be high-speed RAM memory or may include non-volatile memory, for example, at least one disk memory. The memory 405 stores execution instructions. The processor 401 and the memory 405 communicate when the server 400 is operating. The processor 401 invokes instructions stored in the memory 405 to execute the 3D display method described above, which is applied to the metaverse. The operating system 406 includes various programs for performing various basic tasks and for handling hardware-based tasks.

[0030] In the server provided by the embodiment of the present invention, the processor 401 performs operations performed by the 3D display method applied to the metaverse to realize the 3D display method applied to the metaverse. The implementation principle and technical effects of the server are similar to those described above and will not be explained further here.

[0031] Embodiments of the present invention also provide a computer-readable medium containing computer execution instructions. These computer execution instructions can cause a server to execute the 3D display method applied to the metaverse described in the above embodiments. The implementation principle and technical effects of this computer-readable medium are similar to those described above and will not be explained further here.

[0032] Each of the embodiments described above is used solely to illustrate the technical proposal of the present application and is not intended to limit the present invention. Although the present application has been described in detail with reference to the embodiments described above, those skilled in the art should understand that the technical aspects described in the embodiments above can be modified or some or all of the technical features can be replaced with equivalents. Such modifications or replacements cannot deviate from the essence of the corresponding technical proposal.

Claims

1. A metaverse 3D display system, Equipped with a 3D display and a processor, The 3D display includes a liquid crystal grating, a liquid crystal display module, and a backlight module that are bonded together in order from the outside to the inside, with reference to the viewer's viewpoint, along the depth direction perpendicular to the display surface of the display. The liquid crystal grating consists of grating units arranged in an array, and each grating unit corresponds one-to-one with a pixel unit of the liquid crystal display module. The arrangement direction of the grating unit and the direction of the longer side of the subpixel of the pixel unit are perpendicular or at an angle of less than 45 degrees. The processor adjusts the voltage applied to the corresponding grating unit based on the pixel depth value of the 3D image to be displayed. The metaverse 3D display system displays a 3D image in the liquid crystal display module via a liquid crystal grating. When the 3D display is in 3D display mode, the processor applies a voltage to the grating unit included in the liquid crystal grating. When the 3D display switches from 3D display mode to 2D display mode, the processor stops applying voltage to the grating unit. Specifically, the processor adjusts the voltage value of the electrode corresponding to the grating unit corresponding to each pixel based on the depth information change value corresponding to each pixel in the 3D screen to be displayed. The aforementioned 3D screen includes a 2D screen and a corresponding depth image. When the pixel value changes, the corresponding depth value changes in accordance with the aforementioned pixel value. The side of the liquid crystal grating facing the liquid crystal screen is the ground electrode, and the other side is provided with stripe electrodes arranged in an array. The stripe electrode corresponds one-to-one with the pixel unit of the liquid crystal display module, is located at the center of the pixel, and is perpendicular to the long side direction of the subpixel. A metaverse 3D display system characterized in that an AC voltage is applied to each of the stripe electrodes at a specific frequency relative to the ground electrode, and the focal length of a columnar lens equivalent to a grating unit corresponding to the pixel changes as the voltage applied to each stripe electrode changes according to the depth value of the corresponding pixel.

2. Equipped with an additional optical system, The pixels of the liquid crystal display module are focused into the space in front of the 3D display via a lens, and the optical system reflects the pixels of the liquid crystal display module to display them as a virtual image. Pixels located in front of the first reflective mirror surface at the focal point exhibit a screen-in effect, and pixels located behind the first reflective mirror surface at the focal point exhibit a screen-out effect. The optical system includes one or more reflections and includes one or more reflective mirrors, such as concave reflective mirrors, convex reflective mirrors, or planar reflective mirrors. The metaverse 3D display system according to claim 1, wherein the first reflective surface is the mirror surface of the last reflection.

3. When the 3D display is in 3D display mode, a non-zero base voltage is applied to all electrodes. The base voltage is used to virtualize the pixels of the liquid crystal display module via the optical system, and together with the optical system, determines the minimum viewing angle range of the metaverse 3D display system. Here, let V = A + D * B, The metaverse 3D display system according to claim 2, wherein V represents the voltage applied to the electrode of the corresponding pixel, A represents the base voltage, D represents the depth value of the corresponding pixel, and B is a constant coefficient.

4. The backlight module includes a plurality of light source arrays arranged sequentially at intervals, A gap-filling layer is further included between the light source array and the liquid crystal display module, and the thickness of the gap-filling layer is M. Here, let M = L * D / N, L is used to represent the viewing distance, which is the distance from the human eye to the liquid crystal display module, and is detected and determined in real time by a distance sensor mounted on the metaverse 3D display system, or is preset to 65 cm, which is the midpoint of the mainstream viewing distance range (50 cm to 80 cm) of the metaverse scene. D is the minimum dimension of the pixel subunit and is a fixed value determined by the hardware design of the liquid crystal display module. The metaverse 3D display system according to claim 1, wherein N is used to indicate the interpupillary distance, which is the actual distance between the eyes of the viewer, and is either collected and determined in real time by an interpupillary distance detection module built into the metaverse 3D display system or is the average interpupillary distance that has been manually entered in advance from the user operation interface.

5. The metaverse 3D display system further includes an electrically controlled liquid crystal lens panel attached to the surface of the liquid crystal display module. When the electrically controlled liquid crystal lens panel is operating, the metaverse 3D display system is in 3D display mode. The metaverse 3D display system according to claim 4, wherein the metaverse 3D display system is in 2D display mode when the electrically controlled liquid crystal lens panel is not operating.

6. A 3D display method realized by a 3D display and applied to the metaverse, The 3D display includes a liquid crystal grating, a liquid crystal display module, and a backlight module, which are arranged in order from the outside to the inside along the depth direction perpendicular to the display surface of the display, with reference to the viewer's viewpoint. The liquid crystal grating consists of grating units arranged in an array, each grating unit corresponding one-to-one with the pixel units of the liquid crystal display module, and the arrangement direction of the grating units and the direction of the long side of the subpixels of the pixel units are perpendicular or at an angle of less than 45 degrees. The side of the liquid crystal grating facing the liquid crystal screen is the ground electrode, and the other side is provided with stripe electrodes arranged in an array. The stripe electrode corresponds one-to-one with the pixel unit of the liquid crystal display module, is located at the center of the pixel, and is perpendicular to the long side direction of the subpixel. The 3D display method applied to the aforementioned metaverse is: When the 3D display is in 3D display mode, the processor takes the steps of applying a voltage to the grating unit included in the liquid crystal grating, When the 3D display switches from 3D display mode to 2D display mode, the processor stops applying voltage to the grating unit. The processor of the 3D display performs the steps of adjusting the voltage value of the electrode corresponding to the grating unit corresponding to each pixel based on the depth information change value corresponding to each pixel in the 3D screen to be displayed, The steps include applying an AC voltage to the ground electrode at a specific frequency to each of the stripe electrodes, and changing the focal length of a columnar lens equivalent to a grating unit corresponding to the pixel by changing the voltage applied to each of the stripe electrodes according to the depth value of the corresponding pixel, A 3D display method for application to a metaverse, characterized by comprising the step of displaying a 3D image in a liquid crystal display module via a liquid crystal grating.

7. A computer device, It includes at least one processor, memory and transceiver, The computer device is characterized in that the memory is for storing program code, and the processor calls the program code in the memory to execute a 3D display method applied to the metaverse described in claim 6.

8. A computer storage medium, Including commands, A computer storage medium wherein, when the instruction is being executed on the computer, the computer performs a 3D display method applicable to the metaverse according to claim 6.

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