Metaverse 3D Display System, Method, and Related Devices

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).

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 for linking and creation, mapping and interacting 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, but like communication terminals that come in various forms 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 aerial imaging, which has become the ideal display terminal for the metaverse for people. Controlling actions and social interactions in the alien 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 a 3D display system, due to its characteristics, a naked-eye 3D display can provide a 3D effect without the need to wear auxiliary glasses or helmets. Moreover, its vivid depth of field and stereoscopic effect greatly enhance the visual impact and immersion during the viewing experience of the audience, making it an optimal display product for product popularization, publicity, and video broadcasting. Currently, naked-eye 3D imaging can be structurally divided into liquid crystal gratings, liquid crystal electronic gratings, electronic gratings, physical column mirror gratings, and physical slit gratings, and can be theoretically divided into slit grating type, column lens grating type, and projection type gratings. Due to their characteristics, both the slit grating type and the column lens grating type require encoding processing of the display content and have high requirements for the accuracy and uniformity of the structures of the slit grating and the column lens grating. Multi-view projection is large in volume, requires processing of multiple projection data, and has high requirements for hardware. On the other hand, the high-speed scanning structure is simple, but the price of a high-speed projector is expensive, and the requirements for the synchronization between the rotating structure and the projector are extremely high. Therefore, there is room for improvement in existing naked-eye 3D technologies.

Summary of the Invention

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

[0005] The first aspect of the present application 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 that are laminated in order 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 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 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 displays a 3D image on the liquid crystal display module via the liquid crystal grating.

[0006] The 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 target peripheral devices. The target peripheral devices are installed in the mobile device, and include a camera for photographing a calibration target, acquiring a first left side view and a first right side view through the lens of the target peripheral device, and further photographing a target scene to acquire 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 splicing unit for splicing and obtaining a 3D image based on the second left side view and the second right side view.

[0007] The third aspect of the present application provides a computer device including at least one processor, a memory, and a transceiver. The memory is for storing program code. The processor calls the program code in the memory and executes the steps of the 3D display method applicable to the metaverse described in the second aspect above.

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

[0009] As described above, in the embodiments provided by the present application, the metaverse 3D display system includes 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 sequentially laminated from top to bottom. The liquid crystal grating 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. 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 adjusts the voltage applied to the corresponding grating unit based on the pixel depth value of the 3D image of the display target. The metaverse 3D display system displays a 3D image on the liquid crystal display module through the liquid crystal grating. As can be seen, by driving the electric field distribution of the liquid crystal by electric control 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 Description of the Drawings

[0010]

Figure 1

Figure 2a

Figure 2b

Figure 3

Figure 4

Mode for Carrying Out the Invention

[0011] Hereinafter, in accordance with the drawings of the embodiments of the present application, the technical aspects in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments.

[0012] The metaverse is a virtual world that uses scientific and technological means to link and create, map and interact with the real world, and is a digital living space with a new social system. Its essence is the process of virtualizing and digitizing the real world, and it is necessary to transform a large amount of content production, economic systems, user experiences, and physical world content, etc.

[0013] Based on this concept, the present application provides a metaverse 3D display system. FIG. 1 is a schematic structural diagram of a metaverse 3D display system 10 provided by an embodiment of the present application. The metaverse 3D display system 10 includes a 3D display 101 and a processor 102. Here, the aforementioned 3D display 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 aforementioned grating units and the long side direction of the sub-pixels of the pixel units form a vertical or an angle less than 45 degrees. The processor 102 is used to adjust the voltage applied to the corresponding grating unit based on the pixel depth value of the 3D screen of the display target. The metaverse 3D display system 10 displays a 3D image on the liquid crystal display module through the liquid crystal grating.

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

[0015] Optionally, the processor 102 specifically 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 following the pixel value. The side of the liquid crystal grating facing the liquid crystal screen is the ground electrode (also called a planar electrode), and stripe electrodes are arranged in an array on the other side. The aforementioned stripe electrodes correspond one-to-one to 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 sub-pixel. Specifically, refer to FIG. 2b. FIG. 2b is an arrangement diagram of a possible component provided by an embodiment of the present application. As shown in FIG. 2, the arrangement direction of the aforementioned grating unit and the long side direction of the sub-pixel of the pixel unit form an angle that is perpendicular or less than 45 degrees. The stripe electrode is located at the center of the pixel and is perpendicular to the long side direction of the sub-pixel, that is, the RGB sub-pixel, and an alternating voltage with respect to the ground electrode is applied to each of the aforementioned stripe electrodes 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 equivalent cylindrical lens corresponding to the grating unit corresponding to the corresponding pixel.

[0016] Optionally, the metaverse 3D display system further includes an optical system. The pixels of the liquid crystal display module 1012 are converged into the front space of the 3D display through the lens. The aforementioned optical system reflects the pixels of the liquid crystal display module to be displayed as virtual images. Here, the pixels located in front of the first reflecting surface of the focusing point exhibit a screen-in effect. The pixels located behind the first reflecting surface of the focusing point exhibit a screen-out effect. The aforementioned optical system includes one or more reflections and includes one or more of reflecting mirrors such as concave reflecting mirrors, convex reflecting mirrors, or plane reflecting mirrors. The aforementioned first reflecting surface is the mirror surface of the last reflection.

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

[0018] Also, the aforementioned backlight module includes a plurality of light source arrays arranged at sequential intervals. A gap filling layer is further included between the light source array and the liquid crystal display module. The thickness of the gap filling layer is M. Here, 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 minimum size of the pixel molecule unit. N is used to represent the pupil distance, which is the true distance between the two eyes of the viewer.

[0019] Optionally, the aforementioned 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 aforementioned naked-eye 3D display system is in the 3D display mode. When the electrically controlled liquid crystal lens panel is not operating, the aforementioned 3D display system is in the 2D display mode.

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

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

[0022] Refer 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 aforementioned 3D display method includes a 3D display. The aforementioned 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 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. The arrangement direction of the aforementioned grating units forms a perpendicular or an angle 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 units 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 units 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, A represents the aforementioned base voltage, D represents the depth value of the corresponding pixel, 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 type of fine particle transparent glass beads and may affect the display screen.

[0027] Optionally, 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 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 disposed opposite the first lens substrate, and liquid crystal located between the first lens substrate and the second lens substrate. A plurality of individual first electrodes arranged in a matrix are disposed on the first lens substrate. 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 electrode does not affect the light transmission ability of the electrically controlled liquid crystal lens panel. The first electrode is connected to a first drive circuit via one first thin-film transistor (not shown). The second electrode is connected to a common potential that is grounded or a fixed voltage. In this embodiment, the second electrode may be a continuous transparent conductive layer. The display is divided into three sub-pixel sets called RGB, and one of the sub-pixel sets R (the remaining two sub-pixel sets 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 sub-pixel set and a right sub-pixel set, and the left-eye image and the right-eye image are respectively displayed on the sub-pixel sets. The images displayed on the two pixel sets are emitted to the viewer's left eye and right eye respectively through the refraction of the corresponding liquid crystal microlens. Then, the human brain integrates the left-eye image and the right-eye image to present a 3D stereoscopic image. The horizontal viewing angle view not only shows the 3D display effect, but also the vertical viewing angle view can show the 3D effect, enhancing the viewing angle of the 3D / 2D switchable display device.

[0028] Further, the backlight module includes a plurality of light source arrays arranged at sequential intervals. A gap filling layer is further included between the light source array and the liquid crystal display module. The thickness of the aforementioned gap filling layer is M. Here, 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 minimum size of the pixel molecule unit. N is used to represent the interpupillary distance, which is the true distance between the two eyes of the viewer.

[0029] FIG. 4 is a diagram showing the configuration of the server provided by the present application. As shown in FIG. 4, the server 400 includes at least one processor 401, at least one network interface 404, or other user interface 403, a memory 405, and at least one communication bus 402. The server 400 selectively includes a user interface 403 such as a display, a keyboard, or a 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. When the server 400 operates, the processor 401 communicates with the memory 405. The processor 401 calls the instructions stored in the memory 405 and executes the above-described 3D display method applied to the metaverse. The operating system 406 includes various programs for realizing various basic operations and processing tasks based on the hardware.

[0030] In the server provided by the embodiment of the present application, the processor 401 executes the operations executed by the 3D display method applied to the metaverse to realize the 3D display method applied to the metaverse. Since the realization principle and technical effects of the server are similar to the above-described content, they will not be described further here.

[0031] Embodiments of the present application also provide a computer-readable medium including computer-executable instructions. The computer-executable instructions can cause a server to execute a 3D display method applicable to the metaverse described in the above embodiments. Since the realization principle and technical effects of the computer-readable medium are similar to the above-described content, they will not be described further here.

[0032] Each of the above embodiments is used only for explaining the technical proposal of the present application and is not for limiting the present invention. Although the present application has been described in detail with reference to the above-described embodiments, those skilled in the art should understand that they can modify the technical aspects described in the above embodiments or equivalently replace some or all of the technical features. These modifications or replacements should not depart from the essence of the corresponding technical proposal.

Claims

1. A metaverse 3D display system comprising: a 3D display and a processor, wherein the 3D display includes a liquid crystal grating, a liquid crystal display module, and a backlight module that are laminated in order from top to bottom, the liquid crystal grating 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, 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 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 on the liquid crystal display module through the liquid crystal grating. A metaverse 3D display system characterized by this.

2. When the 3D display is in the 3D display mode, the processor applies a voltage to the grating units included in the liquid crystal grating, when the 3D display switches from the 3D display mode to the 2D display mode, the processor stops applying a voltage to the grating units. The metaverse 3D display system according to Claim 1.

3. 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 3D screen includes a 2D screen and a corresponding depth image, when the pixel value changes, the corresponding depth value changes following the pixel value, the surface 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 surface, the stripe 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 sub-pixel, an AC voltage with respect to the ground electrode is applied to each stripe electrode at a specific frequency, by changing the voltage applied to each stripe electrode according to the depth value of the corresponding pixel, the focal length of the columnar lens equivalent to the grating unit corresponding to the corresponding pixel changes. The metaverse 3D display system according to Claim 2.

4. Further comprising an optical system, Pixels of the liquid crystal display module are converged into the front space of the 3D display through a lens, and the optical system reflects the pixels of the liquid crystal display module to be displayed as virtual images. Pixels located in front of the first reflecting mirror surface of the converging point exhibit a screen-in effect, and pixels located behind the first reflecting mirror surface of the converging point exhibit a screen-out effect. The optical system includes one or more reflections and includes one or more types of reflecting mirrors among concave reflecting mirrors, convex reflecting mirrors, or plane reflecting mirrors. The first reflecting mirror surface is the mirror surface of the last reflection. The metaverse 3D display system according to claim 3.

5. When the 3D display is in the 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 through the optical system and jointly determines the minimum viewing angle range of the metaverse 3D display system with the optical system. Here, let V = A + D * B, 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. The metaverse 3D display system according to claim 4.

6. The backlight module includes a plurality of light source arrays arranged at intervals in sequence. 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, D is the minimum size of the pixel molecular unit, and N is used to represent the interpupillary distance, which is the true distance between both eyes of the viewer. The metaverse 3D display system according to claim 1.

7. 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 naked-eye 3D display system is in the 3D display mode. When the electrically controlled liquid crystal lens panel is not operating, the 3D display system is in the 2D display mode. The metaverse 3D display system according to claim 6.

8. A 3D display method applied to the metaverse, realized by a 3D display. The 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 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. The arrangement direction of the grating units and the long side direction of the sub-pixels of the pixel units form a perpendicular angle or an angle less than 45 degrees. The 3D display method applied to the metaverse is as follows: Adjusting the voltage applied to the corresponding grating unit based on the pixel depth value of the 3D screen to be displayed; Displaying a 3D image on the liquid crystal display module through the liquid crystal grating. The 3D display method applied to the metaverse is characterized by including the above steps.

9. A computer device, including at least one processor, a memory, and a transceiver, wherein the memory is for storing program code, and the processor calls the program code in the memory to execute the 3D display method applied to the metaverse according to Claim 8. The computer device is characterized by the above.

10. A computer storage medium, including instructions, wherein when the instructions are operating on a computer, the computer executes the 3D display method applied to the metaverse according to Claim 8. The computer storage medium is as described above.

Images