WO2019127144A1

WO2019127144A1 - Holographic display system and display module

Info

Publication number: WO2019127144A1
Application number: PCT/CN2017/119120
Authority: WO
Inventors: 唐连满
Original assignee: 深圳前海达闼云端智能科技有限公司
Priority date: 2017-12-27
Filing date: 2017-12-27
Publication date: 2019-07-04
Also published as: CN108124508B; CN108124508A

Abstract

The present invention relates to the technical field of holographic display, and particularly relate to a holographic display system and a display module (305). The display module (305) in the holographic display system comprises a support part (11) provided with a rotary shaft (102), and a plurality of bearing bodies (103) and display units. The plurality of bearing bodies (103) is coaxially fixed on the rotary shaft (102) of the support part (11); the display units are distributed uniformly on each bearing body (103); a movement drive module (302) drives the support part (11) to drive the bearing bodies (103) to rotate; a positioning module (303) is used for detecting the position of a specified bearing body (103) during rotation process of the support part (11) and transmitting the detection time and the position of the specified bearing body (103) to a processing module (301); the processing module (301) predicts the position of each bearing body (103) at each moment, converts image data to be displayed according to the distribution of the display units, and drives the luminance display of each display unit by means of a display drive module (304) according to the position of each bearing body (103) at each moment and the image data subjected to conversion. The holographic display is good in display effect, low in costs, and convenient in use.

Description

Holographic display system and display module

Technical field

The present application relates to the field of holographic display technologies, and in particular, to a holographic display system and a display module.

Background technique

A holographic display can display an image resembling an actual object, and the displayed holographic image has the same three-dimensional characteristics as the actual object. The visual effect of people watching holographic images is the same as that of viewing actual objects. People view holographic images from various orientations and see all the three-dimensional faces of objects. Holographic displays are more realistic than three-dimensional (3D) displays. At present, holographic display technology mainly includes a 360-degree holographic phantom imaging system, a holographic projection technology, and a digital light field holographic display technology.

The inventors have found in the course of implementing the present application that the existing holographic display technology has various drawbacks. Specifically: the 360-degree holographic phantom imaging system is a four-sided cone made of transparent material. When the viewer's line of sight is viewed through a face of the cone, it can be mirrored and emitted through the surface of the cone, which can be seen from the space inside the cone. To the floating image. This display mode can only display smaller objects in the closed space, and the transparent material will have an image viewing effect. Holographic projection technology requires projection materials, generally using fog, the display effect is not good, only suitable for displaying large objects, and also has high requirements for the venue. The digital light field holographic display technology shows good results, but the cost is high, the equipment is huge, and the technology is still immature.

Therefore, there is a need to find a holographic display technology that can display a good effect, is low in cost, and is easy to use.

Summary of the invention

The technical problem to be solved in some embodiments of the present application is to realize a holographic display with good display effect, low cost, and convenient use.

An embodiment of the present application provides a holographic display system including a processing module, a motion driving module, a positioning module, a display driving module, and a display module. The display module includes a support portion having a rotating shaft, a plurality of annular carriers, and a plurality of a display unit, the plurality of annular carriers are coaxially fixed on the rotating shaft of the support portion, and each display body is evenly distributed with a display unit; the motion driving module is configured to drive the support portion to drive the plurality of carriers under the control of the processing module Rotating; the positioning module is configured to detect the position of the specified carrier in the plurality of carriers during the rotation of the support portion under the control of the processing module, and transmit the detection time and the position of the specified carrier to the processing module; the processing module is configured to Detecting the time and the position of the specified carrier, predicting the position of each carrier at each moment, and converting the image data to be displayed according to the distribution of the plurality of display units, and according to the position of each carrier at each moment and after the conversion The image data drives the light and dark display of each display unit through the display driver module.

An embodiment of the present application further provides a display module including: a support portion having a rotating shaft, a plurality of annular carrier bodies, and a plurality of display units, wherein the plurality of annular carrier bodies are coaxially fixed to the support portion On the rotating shaft, a display unit is evenly distributed on each carrier.

With respect to the prior art, in the holographic display system provided by some embodiments of the present application, by providing a display unit on a plurality of annular carrier bodies, the motion driving module drives the support portion to drive the plurality of carrier bodies to rotate during the rotation process. The middle processing module controls the light and dark display of the display unit, and the complete holographic image can be displayed by utilizing the visual persistence effect of the human eye. The display module has a simple structure, reduces the volume and cost of the entire holographic display system, and is convenient to use. Moreover, the display unit carried directly by the plurality of annular carriers can display without using the projection material, and the display effect is good, and the requirement for the use site is lowered. At the same time, people can directly see the displayed image while watching, and the display effect is good.

DRAWINGS

The one or more embodiments are exemplified by the accompanying drawings in the accompanying drawings, and FIG. The figures in the drawings do not constitute a scale limitation unless otherwise stated.

1 is a schematic structural diagram of a display module in a first embodiment of the present application;

2 is a schematic structural diagram of a display module in a second embodiment of the present application;

3 is a schematic structural view of a holographic display system in a third embodiment of the present application;

4 is another schematic structural view of a holographic display system in a third embodiment of the present application;

5 is a schematic structural view of a holographic display system in a fourth embodiment of the present application;

Fig. 6 is a schematic view showing another structure of a hologram display system in a fourth embodiment of the present application.

Detailed ways

In order to make the objects, the technical solutions and the advantages of the present application more clear, some embodiments of the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the application and are not intended to be limiting. However, those of ordinary skill in the art will appreciate that in the various embodiments of the present application, numerous technical details are set forth in order to provide the reader with a better understanding of the application. However, the technical solutions claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.

The first embodiment of the present application relates to a display module, which is applied to a holographic display system. The specific structure of the display module is as shown in FIG. 1 , and specifically includes: a support portion 11 having a rotating shaft 102 and a plurality of annular carrier bodies. 103 and a plurality of display units. A plurality of annular carrier bodies 103 are coaxially fixed on the rotating shaft 102, and a display unit is evenly distributed on each of the carrier bodies 103.

It should be noted that, in FIG. 1 , only the number of the carrier 103 is four, and it should not be understood that the number of the carrier can only be four. In this embodiment, the number of the annular carrier is not limited. The number can be set as needed in the application.

Specifically, each carrier has the same shape, and the shape of the carrier includes any one of the following: a ring, an elliptical ring, a rectangular ring, and a regular hexagon ring. It should be noted that as long as the shape of each carrier is the same, the specific shape of the annular carrier is not limited. In actual selection, the shape of the carrier can be selected according to the site of use or display requirements.

Compared with the prior art, the display module has a simple structure, reduces the volume and cost of the entire holographic display system, and is convenient to use. Moreover, the display unit carried directly by the plurality of annular carriers can display without using the projection material, and the display effect is good, and the requirement for the use site is lowered. At the same time, people can directly see the displayed image while watching, and the display effect is good.

The second embodiment of the present application relates to a display module, and the second embodiment is a further improvement based on the first embodiment, and the main improvement is that the second embodiment specifically describes the plurality of carriers. Arrangement.

Specifically, the size of each carrier in the display module is different, and the plurality of annular carriers are arranged in an order of increasing in area from the largest to the smallest. For example, when the carrier is annular, the plurality of carriers are arranged in descending order of radius.

It should be noted that, in this embodiment, the plurality of carriers are coaxially fixed on the rotating shaft 102 and the geometric centers of the plurality of carriers are located at the same point. For example, the carrier is a ring, and the centers of the plurality of rings are at the same point, that is, concentric rings. 2 is a top view of the display module in which the carrier is a ring. In FIG. 2, "1", "2", and "3" respectively indicate the angle between the adjacent carriers.

It should be noted that the arrangement manner of the multiple carriers in the display module can be adaptively adjusted in practical applications, that is, the carriers can also be arranged in an order from largest to smallest, combined with specific application scenarios. Set the arrangement of each carrier.

Specifically, one display unit includes a first LED, a second LED, a third LED, and a fourth LED disposed at the same position of the same carrier, the light emitting surface of the first LED faces the geometric center of the carrier, and the second LED The light emitting surface faces away from the geometric center of the carrier, the light emitting surface of the third LED faces a vertical direction of the plane of the carrier, and the light emitting surface of the fourth LED faces the other vertical direction of the plane of the carrier.

It should be noted that, in the embodiment, the display unit includes four LEDs. In actual design, other numbers of LEDs may be disposed in one display unit according to requirements, for example, six LEDs are uniformly disposed on one display unit, and the bearing is directly opposite. a first LED is disposed at the center of the body geometry, and a second LED is disposed away from the geometric center of the carrier. The third LED and the fourth LED are both disposed in a vertical direction of the plane of the carrier, and the clip between the third LED and the fourth LED The angle is 120 degrees; the fifth LED and the sixth LED are respectively disposed symmetrically with the third LED and the fourth LED in another vertical direction of the carrier, that is, the six LEDs are arranged on the carrier in a regular hexagonal manner. The above embodiments are merely illustrative of the arrangement of the LEDs, and do not specifically limit the structure of the display unit in the display module of the present application.

In this embodiment, the plurality of annular carrier bodies are arranged at an angle according to the area from large to small, so that after the control carrier drives the display unit to rotate, the omnidirectional display can be realized, and the display effect is good. At the same time, in the display, the order from the largest to the smallest of the carrier body corresponds to displaying the outer layer to the inner layer of the image, and the visible carrier is arranged in this manner, so that the processing module can determine each display according to the image to be displayed. The unit corresponds to the light and dark state at each moment.

A third embodiment of the present application relates to a holographic display system, as shown in FIG. 3, including a processing module 301, a motion driving module 302, a positioning module 303, a display driving module 304, and a display module 305.

It should be noted that the structure of the display module 305 in this embodiment is the same as that of the display module 305 mentioned in the above first or second embodiment. Therefore, the technical details in the first or second embodiment are in this embodiment. The embodiments are still valid in the embodiment, and the similarities between the display module 305 in the first embodiment and the second embodiment are not described herein.

It should be noted that the support portion 11 of the display module 305 in this embodiment includes a support base 101 in addition to the rotating shaft 102. As shown in FIG. 1, the support base 101 is used for fixing the rotating shaft 102; wherein, the processing module 301. The motion driving module 302 and the display driving module 304 are respectively disposed in the support base 101.

Specifically, the motion driving module 302 is configured to drive the support portion to drive the rotation of the plurality of carrier bodies under the control of the processing module 301. The positioning module 303 is configured to detect, among the plurality of carriers in the rotation of the support portion, under the control of the processing module 301. Specifying the location of the carrier, and transmitting the detection time and the location of the specified carrier to the processing module 301; the processing module 301 is configured to predict the location of each carrier at each moment according to the detection time and the location of the specified carrier, and follow The distribution of the plurality of display units is performed to convert the image data to be displayed, and the light and dark display of each display unit is driven by the display driving module 304 according to the position of each carrier at each time and the converted image data.

In the holographic display system provided in this embodiment, the display module 305 has a plurality of carrier bodies, and each carrier has the same shape, and is arranged in an order of area from large to small, and the processing module 305 controls the uniformity of the plurality of carriers. Rotation, when each carrier is turned to a different position, controls the brightness and darkness of the display unit on the display module 305, and uses the visual persistence effect of the human eye to display a holographic image.

Specifically, the positioning module 303 includes a positioning signal transmitting sub-module 401 disposed on the designated carrier, and a positioning signal receiving sub-module 402 disposed on the outer surface of the supporting base. As shown in FIG. 4, for example, the designated carrier is the most The carrier of the outer ring.

The positioning signal transmitting sub-module 401 is configured to transmit a positioning signal under the control of the processing module 301 and the transmitting direction is directed to the supporting base 101. The positioning signal receiving sub-module 402 is configured to rotate the positioning signal transmitting sub-module 401 to the positioning signal receiving sub-module. When the 402 is directly above, the positioning signal transmitted by the positioning signal transmitting sub-module 401 is detected, and the position of the specified carrier is immediately transmitted to the processing module 301.

The processing module 301 acquires the location of the specified bearer transmitted by the positioning module 303 at the detection time, where the location is the location corresponding to the positioning signal transmission submodule 401. Further, the display module 305 includes a plurality of annular carriers, and the positioning signal transmitting sub-module 401 is located on the designated carrier. For example, the positioning signal transmitting sub-module 401 is selected to be disposed on the carrier having the largest annular area. When the carrier is in uniform motion, the processing module predicts the position of each carrier at each moment according to the relative positional relationship between the carriers, the moving speed of the carrier, and the position of the specified carrier at the detection time.

In a specific implementation, when the carrier rotates at a constant rotational speed, the position information of each carrier at each moment is calculated from the position where the positioning signal transmitting sub-module 401 passes the positioning signal receiving sub-module 402. For example, the carrier provided with the positioning signal transmitting sub-module 401 can obtain the position of the carrier at the time corresponding to the rotation time according to the rotation speed of the carrier multiplied by the rotation time. According to the positional relationship between the respective carriers, the position of the other carriers at the same time can be derived.

It should be noted that the display principle of the embodiment is that the processing module 301 converts the image to be displayed, and determines a coordinate point to be lit in the holographic image in the three-dimensional space. During the rotation of the carrier, when the display unit rotates to When the coordinate point to be lit is lit, the display unit is lit.

The specific method for establishing the spatial coordinates may be: taking the geometric center point of the specified carrier as the origin, and the direction perpendicular to the largest carrier is the X axis, and the largest carrier on the area is perpendicular to the X axis and perpendicular to The direction of the rotating shaft 102 is the Y-axis, and a spatial rectangular coordinate system is established with the Z-axis along the direction of the rotating shaft 102. The above-mentioned space rectangular coordinate system is established for the convenience of the processing module to determine the spatial position that the display unit needs to be lit. In practice, the spatial rectangular coordinate system can also be established according to other reference positions, so that the processing module can determine that the display unit needs to be illuminated according to the coordinate system. Location information is fine.

In a specific implementation, the positioning signal transmission sub-module 401 is specifically configured to transmit a positioning signal according to a preset period under the control of the processing module. According to the periodic transmission, the power consumption caused by the real-time transmission can be avoided, and the processing module can also correct the position of the specified carrier at each moment according to the period to ensure the display effect.

In a specific implementation, the display process of the holographic display system is: establishing a spatial coordinate system; the processing module 301 acquires image data to be displayed, converts the image data into display information, and determines the spatial coordinate system according to the display information. A pixel is required to be bright or dark. The plurality of carriers are rotated by the rotation axis 102. The positioning module 303 acquires the position of the specified carrier at the detection time. The processing module 301 can determine each carrier according to the positional relationship of the multiple carriers. The position information of the body; during the rotation of the carrier, the display unit moves to a pixel point that needs to be bright or dark, and controls the brightness and darkness of the display unit at the corresponding position according to the display information, thereby displaying the holographic image corresponding to the image to be displayed.

It should be noted that the display unit is illuminated at different positions in the three-dimensional space coordinates in the above embodiment, so that the image displayed by the holographic display system has a true depth of field, that is, the object to be displayed can be at different positions and different distances. The image is clearly displayed, and the user can see the same three-dimensional image as the real object within 360 degrees of the image, and realize the holographic display of the image to be displayed.

In a specific implementation, the positioning signal transmitting sub-module 401 can be an infrared transmitting module, and the transmitting module needs to be mounted on the outermost carrier, and an infrared receiving device is disposed on the supporting base when the carrier is in the rotating process. When the position of the infrared receiving device passes, the processing module 301 can obtain the location information of the outermost carrier. It should be noted that the spacing angle between each carrier is fixed, and the infrared emitting module can be disposed on other carriers when the spacing angle is not zero.

It should be noted that, in order to conveniently obtain the position information of the carrier during the rotation process, other positioning methods may be used to obtain the position information. For example, the positioning signal transmission sub-module 401 is set as the tracker to locate the position of the specified carrier in real time. information. That is to say, the type and positioning mode of the positioning signal transmission sub-module 401 are not specifically limited in this embodiment.

It is to be noted that each module involved in the embodiment of the present application is a logic module. In practical applications, a logical unit may be a physical unit, a part of a physical unit, or multiple A combined implementation of physical units. In addition, in order to highlight the innovative part of the present application, the present embodiment does not introduce a unit that is not closely related to solving the technical problem proposed by the present application, but this does not indicate that there are no other units in this embodiment.

In the holographic display system provided by some embodiments of the present application, by providing a display unit on a plurality of annular carriers, the motion driving module 302 drives the support portion to drive the plurality of carriers to rotate. During the rotation process, the processing module controls the light and dark display of the display unit, and the complete holographic image can be displayed by utilizing the visual persistence effect of the human eye. The display module 305 has a simple structure, reduces the volume and cost of the entire holographic display system, and is convenient to use. Moreover, the display unit carried directly by the plurality of annular carriers can display without using the projection material, and the display effect is good, and the requirement for the use site is lowered. At the same time, people can directly see the displayed image while watching, and the display effect is good.

The fourth embodiment of the present application relates to a holographic display system, and the fourth embodiment is a further improvement based on the third embodiment, and the main improvement is that the holographic display system provided in the fourth embodiment further includes The data input module connected to the processing module; as shown in FIG. 5, the data input module 501 is configured to transmit the input image data to be displayed to the processing module.

It should be noted that the data input module 501 is disposed on the support base, wherein the input interface of the data input module 501 can be a wireless interface or a universal serial bus interface. The data input module provided in this embodiment is only an example. 501 is mainly to facilitate data transmission, and does not limit its specific implementation.

In a specific implementation, the image to be displayed is input by the data input module 501, and converted by the processing module. If the image is large or complex, and the data processing of the conversion process is large, the data conversion step may be placed in the cloud. The data is converted by the remote server, and the converted data result is sent to the holographic display system through the data input module.

In a specific implementation, in order to ensure the display effect, the processing module 301 is specifically configured to: determine the third of each of the at least two display units located on the same horizontal plane according to the position of each carrier at each moment and the converted image data. When the LEDs are in the state corresponding to the first time, the display unit located on the non-outermost carrier is selected from the at least two display units, and the third LED of the selected display unit is set in the state corresponding to the first time. And not or according to the position of each carrier at each moment and the converted image data, determining that the fourth LED of each of the at least two display units located on the same horizontal plane corresponds to the first moment When the states are all lit, the display unit located on the non-outermost carrier is selected from the at least two display units, and the state corresponding to the fourth LED of the selected display unit is set to the unlit state.

In a specific implementation, the conflict processing is required before the LED of the display unit is illuminated. Taking a display unit including four LEDs as an example, if a display unit needs to be lit, the display mode is: if the display is If the unit needs to be lit, the first LED and the second LED of the display unit are turned on; and it is determined whether there is a display unit that needs to be lit in a direction of illumination of the third LED or the fourth LED on a plane of the display unit; Yes, the state of the third LED or the fourth LED of the display unit is set to a non-lighting state. Since there is no display conflict between the first LED and the second LED of each display unit, no conflict processing is required.

For example, as shown in FIG. 6, the two circles in FIG. 6 are the running trajectories of different carriers, assuming that there are display unit A and display unit B, and the third LED and the fourth LED of display unit B and display unit A are In the same horizontal plane, when there is a viewer in the lighting direction of the display unit B and the display unit A, that is, the position shown by C in the illustration, if the LEDs that need to be lit by the display unit B and the display unit A are not collided However, all of them are lit, which causes the images displayed in this direction to overlap. Therefore, the above conflict processing can avoid the occurrence of this phenomenon and ensure the display effect of the holographic image in various directions.

It should be noted that the display driving module 304 is connected to the display module 305, specifically for controlling the brightness and darkness of the display unit and the display state of the display unit. In this embodiment, the display unit is an LED. In the actual setting, other display units can also be selected according to the display requirements, and the material selection of the display unit is not limited here.

The implementation steps of the display manner mentioned in the foregoing specific embodiments may be combined and changed in an appropriate manner when implemented, as long as the same logical relationship is included, which is within the protection scope of the present application; adding irrelevant to the algorithm or the process The modification or introduction of an insignificant design, but without changing the core design of its algorithms and processes, is within the scope of this application.

It should be noted that those skilled in the art can understand that the display method in the above embodiment is completed by a program instructing related hardware, and the program is stored in a storage medium, and includes a plurality of instructions for making a device (may be It is a single chip, a chip, etc. or a processor that performs all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

A person skilled in the art can understand that the above embodiments are specific embodiments for implementing the present application, and various changes can be made in the form and details without departing from the spirit and scope of the present invention. range.

Claims

A holographic display system, comprising: a processing module, a motion driving module, a positioning module, a display driving module, and a display module;

The display module includes a support portion having a rotating shaft, a plurality of annular carrier bodies, and a plurality of display units, the plurality of annular carrier bodies being coaxially fixed on a rotating shaft of the support portion, each of the The display unit is evenly distributed on the carrier;

The motion driving module is configured to drive the support portion to drive the plurality of carrier bodies to rotate under the control of the processing module;

The positioning module is configured to detect, under the control of the processing module, a position of a specified one of the plurality of carriers during the rotation of the support portion, and transmit the detection time and the position of the specified carrier to The processing module;

The processing module is configured to predict, according to the detection time and the location of the specified carrier, a position of each of the carriers at each moment, and convert the image data to be displayed according to the distribution of the plurality of display units And driving the light and dark display of each of the display units by the display driving module according to the position of each of the carrier at each moment and the converted image data.
The holographic display system according to claim 1, wherein each of said carriers has the same shape, and said carrier has a shape including any one of the following: a ring, an elliptical ring, a rectangular ring, and a regular hexagon ring. .
The holographic display system according to claim 2, wherein each of said carrier bodies has a different area, and said plurality of annular carriers are arranged in an order of an area from largest to smallest and at a fixed angle.
The holographic display system according to any one of claims 1 to 3, wherein one of said display units comprises a first light emitting diode LED, a second LED, a third LED and a same position disposed at the same position of said carrier. a fourth LED, a light emitting surface of the first LED faces a geometric center of the carrier, a light emitting surface of the second LED faces away from a geometric center of the carrier, and a light emitting surface of the third LED faces the In a vertical direction of the plane of the carrier, the light emitting surface of the fourth LED faces another vertical direction of the plane of the carrier.
The holographic display system of claim 4, wherein the support portion further comprises a support base;

The positioning module includes a positioning signal transmitting sub-module disposed on the designated carrier, and a positioning signal receiving sub-module disposed on an outer surface of the supporting base;

The positioning signal transmitting sub-module is configured to emit a positioning signal under the control of the processing module and the transmitting direction is directed to the supporting base;

The positioning signal receiving submodule is configured to detect a positioning signal transmitted by the positioning signal transmitting submodule when the positioning signal transmitting submodule is rotated directly above the positioning signal receiving submodule, and immediately specify the positioning signal The location of the carrier is transmitted to the processing module.
The holographic display system according to claim 5, wherein the positioning signal transmitting sub-module is specifically configured to transmit a positioning signal according to a preset period under the control of the processing module.
The holographic display system according to claim 5 or 6, wherein the processing module, the motion driving module, and the display driving module are respectively disposed in the support base.
The holographic display system according to any one of claims 4 to 6, wherein the motion driving module is specifically configured to drive the support portion to drive the plurality of annular carriers under the control of the processing module The body rotates at a constant speed according to a preset speed;

The processing module is specifically configured to: if it is determined that the plurality of carriers are in a state of rotating at a constant speed according to the preset rotation speed, predict each time according to the preset rotation speed, the detection time, and the position of the specified carrier The position of the carrier at each moment.
The holographic display system according to claim 8, wherein the processing module is configured to determine that the location is at the same level according to the position of each of the carriers at each moment and the converted image data. The third LED of each of the at least two display units is illuminated in a state corresponding to the first time, and the display unit located on the non-outermost carrier is selected from the at least two display units, and the selection is performed. The third LED of the display unit is set to a non-lighting state at a state corresponding to the first moment; and/or,

Determining, according to the position of each of the carriers at each moment and the converted image data, that the fourth LEDs of the at least two display units located on the same horizontal plane are in a state corresponding to the first moment Brightly, selecting a display unit located on the non-outermost carrier from the at least two display units, and setting a state corresponding to the fourth LED of the selected display unit to a non-lighting state at the first moment .
The holographic display system according to any one of claims 1 to 3, wherein the holographic display system further comprises a data input module connected to the processing module;

The data input module is configured to transmit the input image data to be displayed to the processing module.
A display module, comprising: a support portion having a rotating shaft, a plurality of annular carrier bodies, and a plurality of display units, wherein the plurality of annular carrier bodies are coaxially fixed to the rotation of the support portion The display unit is evenly distributed on each of the carriers on the shaft.
The display module according to claim 11, wherein each of the carriers has the same shape, and the shape of the carrier comprises any one of the following: a ring, an elliptical ring, a rectangular ring, and a regular hexagon ring.
The display module according to claim 12, wherein each of the carrier bodies has a different area size, and the plurality of annular carrier bodies are arranged in an order of area from largest to smallest and at a fixed angle.