Display device

Abstract

The application provides a display device, which further comprises a supporting assembly, the supporting assembly comprising a supporting body, a first supporting part and an air compression assembly. The air compression assembly injects gas into a first rodless cavity, the first supporting part moves towards a first direction to drive a display screen located in a first accommodating space to spread on a first supporting piece, the air compression assembly injects gas into a first rod cavity, the first supporting part moves away from the first direction, and a first rotating piece rotates to drive the display screen located on the first supporting piece to retract into the first accommodating space, so as to change the size of the display area. The display device does not have a gap, so that the display device can be applied to a small-size display screen. The display device of the application not only solves the defect that there is a gap between the spliced display screens in the prior art, but also realizes the display area of the small-size display screen, and can be used for different display size requirements.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a display device. Background Technology

[0002] With the rapid development of display technology, display technologies that can change the display area, such as foldable screens, have emerged. Currently, display technologies that can change the display area are mainly used in large-size display devices, which often achieve this by splicing multiple displays together. However, splicing multiple displays usually results in gaps between the spliced ​​displays and is not suitable for small-size displays.

[0003] Therefore, how to avoid gaps between spliced ​​displays in existing technologies and achieve variable display area for small-sized displays is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of this application is to provide a display device that can not only solve the defect of gaps between spliced ​​display screens in the prior art, but also realize the changeable display area of ​​small-sized display screens, thereby meeting the needs of different display sizes.

[0005] To address the aforementioned technical problems, this application provides a display device, which includes a display screen for displaying images. The display device also includes a support assembly, which comprises a support body, a first support portion, and an air compression assembly. The support body has an air cavity and a first air chamber, the air cavity and the first air chamber being spaced apart. The first support portion includes a first support member, a first piston assembly, and a first rotating member. The first support member has a first accommodating space, the first rotating member is disposed within the first accommodating space, the first piston assembly is fixed to one side of the first support member, and the first support member is disposed on the support body. The first piston assembly is disposed within the first air chamber, dividing the first air chamber into a first rod-type chamber and a first rodless chamber, the air chamber selectively communicating with either the first rod-type chamber or the first rodless chamber. The air compression assembly is disposed within the air cavity. The display screen is disposed on the supporting body, the first supporting member, and within the first accommodating space. The display screen is arranged around the first rotating member. An air compression assembly injects gas into the first rodless cavity. The first supporting member moves in a first direction to drive the display screen located in the first accommodating space to unfold onto the first supporting member. Alternatively, the air compression assembly injects gas into the first rod-shaped cavity, causing the first supporting member to move away from the first direction, thus rotating the first rotating member to drive the display screen located on the first supporting member back into the first accommodating space.

[0006] In summary, the display device provided in this application injects gas into the first rodless cavity via the air compression assembly, causing the first support portion to move in a first direction to drive the display screen located in the first accommodating space to unfold onto the first support member. Alternatively, the air compression assembly injects gas into the first rod-shaped cavity, causing the first support portion to move away from the first direction, and the first rotating member to rotate, driving the display screen located on the first support member to retract into the first accommodating space, thereby changing the size of the display area. Furthermore, the display device has no gaps, allowing it to be applied to small-sized displays. Therefore, the display device of this application not only solves the defect of gaps existing between spliced ​​displays in the prior art but also achieves a small display area, meeting the needs of different display sizes.

[0007] In an exemplary embodiment, the support assembly further includes a first magnet disposed on the bottom wall of the first air chamber, and the first magnet is magnetically attracted to the first piston assembly.

[0008] In an exemplary embodiment, the first support portion further includes a first air nozzle disposed within the first accommodating space. The first support portion has a first gas channel communicating with both the surface of the first accommodating space and the surface of the first piston assembly. The first air nozzle is used to blow air onto the first rotating member to drive it to rotate.

[0009] In an exemplary embodiment, the supporting body has a second air chamber, which is spaced apart from the first air chamber and the air cavity. The supporting assembly further includes a second supporting part, which includes a second supporting member, a second piston assembly, and a second rotating member. The second supporting member has a second accommodating space, the second rotating member is disposed within the second accommodating space, the second piston assembly is fixed to one side of the second supporting member, the second supporting member is disposed on the supporting body, and the second piston assembly is disposed within the second air chamber. The second piston assembly divides the second air chamber into a second rod-type chamber and a second rodless chamber, and the air cavity selectively communicates with either the second rod-type chamber or the second rodless chamber. The display screen is disposed on the supporting body, the second supporting member, and within the second accommodating space, and the display screen is arranged around the second rotating member. The air compression assembly injects gas into the second rodless chamber, and the second supporting part moves away from the first direction to drive the display screen located in the second accommodating space to unfold onto the second supporting member. The air compression assembly injects gas into the second rod chamber, and the second support moves toward the first direction, causing the second rotating member to rotate, thereby driving the display screen located on the second support member to retract into the second accommodating space.

[0010] In an exemplary embodiment, the support assembly further includes a second magnet disposed on the bottom wall of the second air chamber, and the second magnet is magnetically attracted to the second piston assembly.

[0011] In an exemplary embodiment, the second support portion further includes a second air nozzle disposed within the second accommodating space. The second support portion has a second gas passage, which communicates with both the surface of the second accommodating space and the surface of the second piston assembly. The second air nozzle is used to blow air onto the second rotating member to drive it to rotate.

[0012] In an exemplary embodiment, the support body has a first air passage, a second air passage, and a connecting air passage. The first air passage communicates with the air chamber, the first rodless chamber, and the second rodless chamber, respectively. The second air passage communicates with the air chamber and the second rod-type chamber, respectively. The connecting air passage communicates with the first rod-type chamber and the second rod-type chamber, respectively. The support assembly also includes a first switching valve and a second switching valve. The first switching valve is disposed within the first air passage, and the second switching valve is disposed within the second air passage. The first switching valve and the second switching valve are not simultaneously activated.

[0013] In an exemplary embodiment, the air compression assembly includes an electromagnet, a magnetic component, an elastic component, and a one-way valve. The electromagnet is disposed on the bottom wall of the air chamber, the one-way valve is disposed at the opening of the air chamber, the magnetic component and the elastic component are disposed between the electromagnet and the one-way valve, the magnetic component and the elastic component are fixedly connected, and the elastic component is fixedly connected to the side wall of the air chamber. The electromagnet is used to intermittently generate a magnetic field to drive the magnetic component to reciprocate within the air chamber.

[0014] In an exemplary embodiment, the support assembly further includes a first pressure sensor and a second pressure sensor. The first pressure sensor is disposed at the opening of the first air chamber, and the second pressure sensor is disposed at the opening of the second air chamber. The first pressure sensor is used to detect the position of the first piston assembly within the first air chamber, and the second pressure sensor is used to detect the position of the second piston assembly within the second air chamber.

[0015] In an exemplary embodiment, the display device further includes a control unit, which is electrically connected to the electromagnet and is used to intermittently supply power to the electromagnet. The control unit is also electrically connected to the first pressure sensor, the second pressure sensor, the first switching valve, and the second switching valve, respectively. When the first pressure sensor does not detect the first piston assembly and the second pressure sensor does not detect the second piston assembly, the control unit controls the first switching valve to open and the second switching valve to close. When the first pressure sensor detects the first piston assembly and the second pressure sensor detects the second piston assembly, the control unit controls the first switching valve to close and the second switching valve to open. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a top view of the display device disclosed in the embodiments of this application in a first display state;

[0018] Figure 2 for Figure 1 The first cross-section of the display device shown is a schematic diagram of its structure along direction II.

[0019] Figure 3 for Figure 2 The diagram shows the structural schematic of the supporting main body;

[0020] Figure 4 for Figure 2 The diagram shows the structure of the first support section;

[0021] Figure 5 for Figure 2 The diagram shows the structure of the second support section;

[0022] Figure 6 This is a top view of the display device disclosed in the embodiments of this application in a second display state;

[0023] Figure 7 for Figure 6 The first cross-section of the display device shown is a schematic diagram of its structure along the II-II direction.

[0024] Figure 8 for Figure 1 The second cross-section of the display device shown is a schematic diagram of its structure along direction II;

[0025] Figure 9 for Figure 6 The display device shown is a schematic diagram of the structure along the second cross section in the II-II direction;

[0026] Figure 10 for Figure 1 The display device shown is illustrated by a third cross-section along direction II;

[0027] Figure 11 for Figure 6 The display device shown is a schematic diagram of the third cross-section along the II-II direction.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1-Display device; 10-Display screen; 20-Support assembly; 30-Frame; 50-Control unit; 60-Power supply; 100-Support body; 101-Main support surface; 102-Air chamber; 103-First air chamber; 103a-First rod chamber; 103b-First rodless chamber; 104-Second air chamber; 104a-Second rod chamber; 104b-Second rodless chamber; 105-First air passage; 106-Second air passage; 107 - Connecting air passage; 108- First abutment hole; 109- Second abutment hole; 200- First support part; 201- First gas passage; 210- First support member; 211- First support surface; 212- First accommodating space; 213- First gas outlet passage; 214- First accommodating groove; 220- First piston assembly; 230- First abutment member; 240- First rotating member; 250- First air nozzle; 260- First pressure valve; 28 0-First telescopic component; 300-Second support part; 301-Second gas passage; 310-Second support component; 311-Second support surface; 312-Second accommodating space; 313-Second air outlet passage; 314-Second accommodating groove; 320-Second piston assembly; 330-Second abutment component; 340-Second rotating component; 350-Second air nozzle; 360-Second pressure valve; 380-Second telescopic component; 400-Air compression assembly; 410-Electromagnet; 420-Magnetic component; 430-Elastic component; 440-One-way valve; 510-First switching valve; 520-Second switching valve; 530-First magnet; 540-Second magnet; 550-First pressure sensor; 560-Second pressure sensor; 610-First gear; 620-First rack; 630-First connector; 710-Second gear; 720-Second rack; 730-Second connector. Detailed Implementation

[0030] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0031] The following descriptions of the embodiments are based on the accompanying illustrations and are used to illustrate specific embodiments in which this application can be implemented. The component designations used herein, such as "first," "second," etc., are merely for distinguishing the described objects and have no sequential or technical meaning. Directional terms used in this application, such as "upper," "lower," "front," "rear," "left," "right," "inner," "outer," "side," etc., are only for reference to the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of this application, and are not intended to indicate or imply that the referred device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this application.

[0032] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joint" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. "Movable connection" refers to a connection that allows relative movement after connection. "Sliding connection" refers to a connection that allows relative sliding after connection. "Rotary connection" refers to a connection that allows relative rotation after connection. "Magnetic connection" refers to a connection that is magnetically attracted and in contact with each other. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising," "may include," "include," or "may include" as used in this application indicate the presence of the disclosed corresponding function, operation, element, etc., and do not limit one or more other functions, operations, elements, etc. Moreover, the terms "comprising" or "include" indicate the presence of the corresponding feature, number, step, operation, element, component, or combination thereof disclosed in the specification, but do not exclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof, intended to cover non-exclusive inclusion. It should also be understood that "at least one" as described herein means one or more, such as one, two, or three, while "a plurality of" means at least two, such as two or three, unless otherwise explicitly specified.

[0034] The terms "parallel" and "perpendicular" are relative to the current technological level, not absolute mathematical definitions. Slight deviations are permissible; approximations of parallelism or perpendicularity are acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, with the angle between them ranging from 0 to 5 degrees. Similarly, "A and B are perpendicular" means that A and B are perpendicular or approximately perpendicular, with the angle between them ranging from 85 to 95 degrees.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application.

[0036] Please see Figure 1 and Figure 2 , Figure 1 This is a top view schematic diagram of the display device disclosed in the embodiment of this application in its first display state. Figure 2 for Figure 1 The display device shown is a schematic diagram of the structure along the first cross-section in direction II. (See diagram below.) Figure 1 As shown, the display device 1 in its first display state has a relatively small display area. The display device 1 includes a display screen 10, a support assembly 20, and a bezel 30. A portion of the display screen 10 is disposed on the surface of the support assembly 20, and a portion of the display screen 10 is disposed inside the support assembly 20. The ratio of the area of ​​the display screen 10 on the surface of the support assembly 20 to the area of ​​the display screen 10 inside the support assembly 20 is variable, meaning the display area of ​​the display device 1 can be increased or decreased. The bezel 30 is disposed around the perimeter of the display screen 10 on the surface of the support assembly 20 to protect the display screen 10. The display screen 10 is an OLED display screen.

[0037] For ease of description, the length direction of the display device 1 is defined as the X-axis, the width direction as the Y-axis, and the thickness direction as the Z-axis. The X-axis, Y-axis, and Z-axis are all perpendicular to each other. Alternatively, the width direction of the display device 1 can be defined as the X-axis, and the length direction as the Y-axis. The X-axis is defined as the first direction.

[0038] In the embodiments of this application, please refer to Figure 2The support assembly 20 includes a support body 100, a first support portion 200, a second support portion 300, and an air compression assembly 400. The air compression assembly 400 is disposed inside the support body 100. The first support portion 200 and the second support portion 300 are spaced apart and are both disposed on the support body 100. A portion of the first support portion 200 is disposed inside the support body 100, and a portion of the second support portion 300 is disposed inside the support body 100.

[0039] Please refer to the following: Figure 3 , Figure 3 for Figure 2 The diagram shows the structure of the support body 100. The support body 100 includes a main support surface 101, which faces the Z-axis direction. The support body 100 has an air cavity 102, a first air chamber 103, a second air chamber 104, a first air passage 105, and a second air passage 106.

[0040] The depth direction of the air cavity 102 is the Z-axis direction, and the air cavity 102 is a stepped hole, meaning that the diameter of the air cavity 102 varies in its depth direction. The opening of the air cavity 102 faces away from the Z-axis direction.

[0041] The depth direction of both the first air chamber 103 and the second air chamber 104 is along the X-axis. Both the first air chamber 103 and the second air chamber 104 are cylindrical cavities with openings. The first air chamber 103 and the second air chamber 104 are spaced apart. The opening of the first air chamber 103 faces the X-axis, while the opening of the second air chamber 104 faces the opposite direction of the X-axis. The opposite direction of the X-axis is opposite to the X-axis direction, meaning the openings of the first air chamber 103 and the second air chamber 104 are opposite to each other. The first air chamber 103 and the second air chamber 104 are at the same height. The first air chamber 103 and the second air chamber 104 are also spaced apart from the air cavity 102, and the heights of the first air chamber 103 and the second air chamber 104 are both higher than the height of the air cavity 102. That is, the first air chamber 103 and the second air chamber 104 are both located within the air cavity 102 along the Z-axis.

[0042] The first airway 105 and the second airway 106 are spaced apart. The height of both the first airway 105 and the second airway 106 is lower than the height of the first air chamber 103, meaning the first air chamber 103 is located above the first airway 105 and the second airway 106 along the Z-axis. The first airway 105 bends and extends inside the support body 100, and the second airway 106 also bends and extends inside the support body 100. The first airway 105 communicates with the air cavity 102, the first air chamber 103, and the second air chamber 104, respectively, and the second airway 106 communicates with both the air cavity 102 and the second air chamber 104, respectively.

[0043] In an exemplary embodiment, the support body 100 further includes a connecting air passage 107. The height of the connecting air passage 107 is higher than the height of the first air chamber 103, meaning that the connecting air passage 107 is located above the first air chamber 103 along the Z-axis. The connecting air passage 107 communicates with both the first air chamber 103 and the second air chamber 104.

[0044] In this embodiment, the support body 100 further comprises a first abutment hole 108 and a second abutment hole 109. The depth direction of the first abutment hole 108 and the second abutment hole 109 is the X-axis direction, and both the first abutment hole 108 and the second abutment hole 109 are cylindrical holes or prism holes. The first abutment hole 108 and the second abutment hole 109 are spaced apart, with the opening of the first abutment hole 108 facing the X-axis direction, and the opening of the second abutment hole 109 facing the opposite direction of the X-axis. The height of the location of the first abutment hole 108 is the same as the height of the location of the second abutment hole 109.

[0045] The height of both the first abutment hole 108 and the second abutment hole 109 is higher than the height of the air cavity 102. The height of the first abutment hole 108 is lower than the height of the first air chamber 103. That is, both the first abutment hole 108 and the second abutment hole 109 are located above the air cavity 102 along the Z-axis, and the first abutment hole 108 is located below the first air chamber 103 along the Z-axis. The orthographic projection of the first abutment hole 108 in the Z-axis direction overlaps with the orthographic projection of the first air chamber 103 in the Z-axis direction. The height of the second abutment hole 109 is lower than the height of the second air chamber 104. The orthographic projection of the second abutment hole 109 in the Z-axis direction overlaps with the orthographic projection of the second air chamber 104 in the Z-axis direction. That is, the second abutment hole 109 is located below the second air chamber 104 along the Z-axis direction.

[0046] Please see Figure 4 , Figure 4 for Figure 2 The diagram shows the structure of the first support portion. The first support portion 200 includes a first support member 210, a first piston assembly 220, and a first abutment member 230. Figure 4 The connection between the first support member 210 and the first piston assembly 220, as well as the connection between the first support member 210 and the first abutment member 230, are shown in dashed lines.

[0047] The first abutment 230 and the first piston assembly 220 are arranged sequentially and spaced apart along the Z-axis. The first piston assembly 220 and the first abutment 230 are located on the side of the first support 210 facing the opposite direction of the X-axis. The first piston assembly 220 is fixedly connected to the first support 210, and the first abutment 230 is fixedly connected to the first support 210.

[0048] The first support member 210 includes a first support surface 211, which is the surface of the first support member 210 facing the Z-axis. The first support member 210 has a first accommodating space 212 with an opening, and the first support surface 211 extends to the opening of the first accommodating space 212.

[0049] The first support portion 200 further includes a first rotating member 240, which is disposed within the first accommodating space 212 and can rotate within the first accommodating space 212. The first rotating member 240 may consist of a rotating shaft and an impeller, wherein the axial direction of the rotating shaft is parallel to the Y-axis direction, and the impeller is sleeved on the rotating shaft.

[0050] The first support portion 200 further includes a first air nozzle 250, which is disposed within the first accommodating space 212. The first support portion 200 has a first gas passage 201, which communicates with the surfaces of the first accommodating space 212 and the first piston assembly 220, respectively. That is, the first accommodating space 212 is connected to the surface of the first piston assembly 220 through the first gas passage 201.

[0051] The first support member 210 has a first air outlet channel 213, which is connected to the first accommodating space 212 and the outside.

[0052] The first support portion 200 further includes a first pressure valve 260, which is disposed within the first air outlet channel 213. When the air pressure within the first accommodating space 212 is greater than the threshold air pressure of the first pressure valve 260, the first pressure valve 260 opens, and the gas within the first accommodating space 212 is discharged through the first air outlet channel 213. When the air pressure within the first accommodating space 212 is less than the threshold air pressure of the first pressure valve 260, the first pressure valve 260 closes, and the gas within the first accommodating space 212 cannot be discharged through the first air outlet channel 213.

[0053] Please see Figure 5 , Figure 5 for Figure 2 The diagram shows the structure of the second support portion. The second support portion 300 includes a second support member 310, a second piston assembly 320, and a second abutment member 330. Figure 5 The connection between the second support member 310 and the second piston assembly 320, as well as the connection between the second support member 310 and the second abutment member 330, are shown in dashed lines.

[0054] The second abutment 330 and the second piston assembly 320 are arranged sequentially and spaced apart along the Z-axis. The second piston assembly 320 and the second abutment 330 are disposed on the side of the second support 310 facing the X-axis, and the second piston assembly 320 and the second support 310 are fixedly connected. The second abutment 330 and the second support 310 are also fixedly connected.

[0055] The second support member 310 includes a second support surface 311, which is the surface of the second support member 310 facing the Z-axis. The second support member 310 has a second accommodating space 312 with an opening, and the second support surface 311 extends to the opening of the second accommodating space 312.

[0056] The second support portion 300 further includes a second rotating member 340, which is disposed within the second accommodating space 312 and can rotate within the second accommodating space 312. The second rotating member 340 may consist of a rotating shaft and an impeller, wherein the axial direction of the rotating shaft is parallel to the Y-axis direction, and the impeller is sleeved on the rotating shaft.

[0057] The second support portion 300 further includes a second air nozzle 350, which is disposed within the second accommodating space 312. The second support portion 300 has a second gas passage 301, which communicates with the surfaces of the second accommodating space 312 and the second piston assembly 320.

[0058] The second support member 310 has a second air outlet channel 313, which communicates with both the second accommodating space 312 and the outside. The second support portion 300 also includes a second pressure valve 360, which is disposed within the second air outlet channel 313. When the air pressure within the second accommodating space 312 exceeds the threshold pressure of the second pressure valve 360, the second pressure valve 360 ​​opens, allowing gas in the second accommodating space 312 to exit through the second air outlet channel 313. When the air pressure within the second accommodating space 312 is less than the threshold pressure of the second pressure valve 360, the second pressure valve 360 ​​closes, preventing gas in the second accommodating space 312 from exiting through the second air outlet channel 313.

[0059] Please refer to it again. Figure 2 The main support surface 101, the first support surface 211, and the second support surface 311 are flush. Part of the display screen 10 is disposed on the main support surface 101, the first support surface 211, and the second support surface 311, while another part of the display screen 10 is disposed within the first accommodating space 212 and the second accommodating space 312. The display screen 10 located in the first accommodating space 212 is wound around the first rotating member 240, and the display screen 10 located in the second accommodating space 312 is wound around the second rotating member 340.

[0060] It is understood that the ratio of the area of ​​the main support surface 101, the first support surface 211 and the second support surface 311 to the area of ​​the first accommodating space 212 and the second accommodating space 312 of the display screen 10 can be changed, so that the display area of ​​the display device 1 can be increased or decreased.

[0061] The first piston assembly 220 is disposed within the first air chamber 103, and the first piston assembly 220 can reciprocate within the first air chamber 103 along the X-axis direction. The first abutting member 230 is disposed within the first abutting hole 108, and the first abutting member 230 can reciprocate within the first abutting hole 108 along the X-axis direction. The inner wall of the first abutting hole 108 abuts against the first abutting member 230 in the Z-axis direction, preventing the first support portion 200 from moving relative to the support body 100 in the Z-axis direction.

[0062] The first piston assembly 220 divides the first air chamber 103 into a first rod chamber 103a and a first rodless chamber 103b. The first rod chamber 103a is the space enclosed by the piston rod of the first piston assembly 220 and the side wall of the first air chamber 103, and the first rodless chamber 103b is the space enclosed by the piston of the first piston assembly 220 and the bottom wall of the first air chamber 103. The first air passage 105 communicates with the first rodless chamber 103b of the first air chamber 103. The connecting air passage 107 communicates with the first rod chamber 103a of the first air chamber 103.

[0063] The second piston assembly 320 is disposed within the second air chamber 104, and the second piston assembly 320 can reciprocate within the second air chamber 104 along the X-axis direction. The second abutment member 330 is disposed within the second abutment hole 109, and the second abutment member 330 can reciprocate within the second abutment hole 109 along the X-axis direction. The inner wall of the second abutment hole 109 abuts against the second abutment member 330 in the Z-axis direction, preventing the second support portion 300 from moving relative to the support body 100 in the Z-axis direction.

[0064] The second piston assembly 320 divides the second air chamber 104 into a second rod chamber 104a and a second rodless chamber 104b. The second rod chamber 104a is the space enclosed by the piston rod of the second piston assembly 320 and the side wall of the second air chamber 104, and the second rodless chamber 104b is the space enclosed by the piston of the second piston assembly 320 and the bottom wall of the second air chamber 104. The first air passage 105 communicates with the second rodless chamber 104b of the second air chamber 104, and the second air passage 106 communicates with the second rod chamber 104a of the second air chamber 104. The connecting air passage 107 communicates with the second rod chamber 104a of the second air chamber 104.

[0065] In exemplary embodiments, such as Figure 2 As shown, the support assembly 20 further includes a first magnet 530 and a second magnet 540. The first magnet 530 is disposed on the bottom wall of the first air chamber 103 and is fixedly connected to the bottom wall of the first air chamber 103. The second magnet 540 is disposed on the bottom wall of the second air chamber 104 and is fixedly connected to the bottom wall of the second air chamber 104. The first magnet 530 is magnetically attracted to the first piston assembly 220, and the second magnet 540 is magnetically attracted to the second piston assembly 320.

[0066] Understandably, when the first piston assembly 220 moves to the bottom dead center, the first magnet 530 is magnetically attracted to the first piston assembly 220, preventing the first support portion 200 from becoming loose relative to the support body 100. When the second piston assembly 320 moves to the bottom dead center, the second magnet 540 is magnetically attracted to the second piston assembly 320, preventing the second support portion 300 from becoming loose relative to the support body 100. The position where the piston moves to the point where the distance between the piston and the bottom wall of the gas chamber is minimal is called the bottom dead center.

[0067] In an exemplary embodiment, the support assembly 20 further includes a first pressure sensor 550 and a second pressure sensor 560. The first pressure sensor 550 is disposed at the opening of the first air chamber 103, and the second pressure sensor 560 is disposed at the opening of the second air chamber 104.

[0068] The first pressure sensor 550 is used to detect the position of the first piston assembly 220 within the first air chamber 103. For example, when the first piston assembly 220 moves to the top dead center, the first piston assembly 220 contacts the first pressure sensor 550, the first pressure sensor 550 detects pressure, and thus detects that the first piston assembly 220 is at the top dead center.

[0069] The second pressure sensor 560 is used to detect the position of the second piston assembly 320 within the second air chamber 104. For example, when the second piston assembly 320 moves to the top dead center, the second piston assembly 320 contacts the second pressure sensor 560, and the second pressure sensor 560 detects the pressure, thereby detecting that the second piston assembly 320 is at the top dead center.

[0070] The position where the piston moves to the maximum distance between the piston and the bottom wall of the air chamber is called the top dead center.

[0071] In an exemplary implementation, please refer to Figure 2 The air compression assembly 400 is disposed within the air chamber 102. The air compression assembly 400 includes an electromagnet 410, a magnetic element 420, an elastic element 430, and a one-way valve 440. The electromagnet 410 is disposed on the bottom wall of the air chamber 102, the one-way valve 440 is disposed at the opening of the air chamber 102, and the magnetic element 420 and the elastic element 430 are disposed between the electromagnet 410 and the one-way valve 440, with the magnetic element 420 and the elastic element 430 fixedly connected. The elastic element 430 is fixedly connected to the side wall of the air chamber 102, and the magnetic element 420 can reciprocate within the air chamber 102. The one-way valve 440 allows gas to enter the air chamber 102 from the outside while preventing gas leakage from the air chamber 102 to the outside. The electromagnet 410 is used to intermittently generate a magnetic field, which is used to magnetically attract the magnetic element 420.

[0072] For example, when the electromagnet 410 generates a magnetic field, the magnetic element 420 is attracted, causing it to move along the Z-axis. This compresses the elastic element 430, allowing external gas to enter the air chamber 102 through the one-way valve 440. When the electromagnet 410 does not generate a magnetic field, the elastic element 430 returns to its original state, causing the magnetic element 420 to move in the opposite direction along the Z-axis. Due to the presence of the one-way valve 440, gas can only enter the first air passage 105 and the second air passage 106. Thus, the magnetic element 420 can reciprocate within the air chamber 102, compressing the gas within it into either the first air passage 105 or the second air passage 106.

[0073] In an exemplary embodiment, the elastic element 430 is a helical spring.

[0074] In an exemplary embodiment, the support assembly 20 further includes a first switching valve 510 and a second switching valve 520. The first switching valve 510 is disposed within the first air passage 105, and the second switching valve 520 is disposed within the second air passage 106. The first switching valve 510 and the second switching valve 520 are not simultaneously activated, so the gas compressed by the air compression assembly 400 can only enter either the first air passage 105 or the second air passage 106.

[0075] That is, the air chamber 102 is selectively connected to either the first rod chamber 103a or the first rodless chamber 103b, and selectively connected to either the second rod chamber 104a or the second rodless chamber 104b. The air compression assembly 400 simultaneously supplies gas to both the first rod chamber 103a and the second rod chamber 104a, or simultaneously supplies gas to both the first rodless chamber 103b and the second rodless chamber 104b.

[0076] In an exemplary embodiment, the first switching valve 510 may be a solenoid valve, and the second switching valve 520 may be a solenoid valve.

[0077] Please see Figure 6 and Figure 7 , Figure 6 This is a top view schematic diagram of the display device disclosed in the embodiment of this application in a second display state. Figure 7 for Figure 6 The diagram shows a schematic cross-section of the display device along the II-II direction. The display area of ​​the display device 1 in the second display state is larger, that is, the display area of ​​the display device 1 in the second display state is larger than the display area of ​​the display device 1 in the first display state.

[0078] Figure 2 The first piston assembly 220 shown is at bottom dead center, and the second piston assembly 320 is at bottom dead center. Figure 7The first piston assembly 220 shown is at top dead center, and the second piston assembly 320 is at top dead center, that is, at this time the piston has moved to the position where the distance between the piston and the bottom wall of the gas chamber is the greatest.

[0079] The display device 1 switches from the first display state to the second display state, that is, the display device 1 switches from... Figure 2 The structure shown is switched to Figure 7 The structure is shown. The first pressure sensor 550 does not detect the first piston assembly 220, and the second pressure sensor 560 does not detect the second piston assembly 320. The first switching valve 510 is open, and the second switching valve 520 is closed. The air compression assembly 400 injects gas into the first air passage 105, and the gas in the first air passage 105 enters the first rodless chamber 103b of the first air chamber 103 and the second rodless chamber 104b of the second air chamber 104.

[0080] The pressure in the first rodless cavity 103b is greater than the pressure in the first rod cavity 103a. The first piston assembly 220 moves from the bottom dead center to the top dead center (X-axis direction). The pressure in the second rodless cavity 104b is greater than the pressure in the second rod cavity 104a. The second piston assembly 320 moves from the bottom dead center to the top dead center (opposite X-axis direction). This causes the first support portion 200 to move along the X-axis direction, and the second support portion 300 to move in the opposite X-axis direction. Consequently, the display screen 10 located in the first accommodating space 212 extends onto the first support surface 211, and the display screen 10 located in the second accommodating space 312 extends onto the second support surface 311, thereby increasing the display area of ​​the display device 1.

[0081] While the first support 200 moves along the X-axis, the display screen 10 surrounding the first rotating member 240 causes the first rotating member 240 to rotate clockwise. While the second support 300 moves in the opposite direction along the X-axis, the display screen 10 surrounding the second rotating member 340 causes the second rotating member 340 to rotate counterclockwise.

[0082] The display device 1 switches from the second display state to the first display state, that is, the display device 1 switches from... Figure 7 The structure shown is switched to Figure 2 The structure is shown. The first pressure sensor 550 detects the first piston assembly 220, and the second pressure sensor 560 detects the second piston assembly 320. The first switching valve 510 is closed, and the second switching valve 520 is open. The air compression assembly 400 injects gas into the second air passage 106, and the gas in the second air passage 106 enters the second rod chamber 104a of the second air chamber 104. The gas in the second rod chamber 104a of the second air chamber 104 enters the first rod chamber 103a of the first air chamber 103 through the connecting air passage 107.

[0083] The pressure in the first rod chamber 103a is greater than the pressure in the first rodless chamber 103b, causing the first piston assembly 220 to move from top dead center to bottom dead center (opposite direction of the X-axis). The pressure in the second rod chamber 104a is greater than the pressure in the second rodless chamber 104b, causing the second piston assembly 320 to move from top dead center to bottom dead center (in the X-axis direction). This causes the first support portion 200 to move in the opposite direction of the X-axis, and the second support portion 300 to move in the X-axis direction.

[0084] Simultaneously, the gas surrounding the piston rod of the first piston assembly 220 is compressed and passes through the first gas channel 201 to the first air nozzle 250. The first air nozzle 250 blows air onto the first rotating member 240, driving the first rotating member 240 to rotate counterclockwise. The first rotating member 240 retracts the display screen 10 located on the first support surface 211 into the first accommodating space 212. The gas surrounding the piston rod of the second piston assembly 320 is compressed and passes through the second gas channel 301 to the second air nozzle 350. The second air nozzle 350 blows air onto the second rotating member 340, driving the second rotating member 340 to rotate clockwise. The second rotating member 340 retracts the display screen 10 located on the second support surface 311 into the second accommodating space 312.

[0085] In other embodiments, the first rotating member 240 and the second rotating member 340 can be rotated by a motor, so that the first rotating member 240 retracts the display screen 10 into the first accommodating space 212 and the second rotating member 340 retracts the display screen 10 into the second accommodating space 312.

[0086] In one possible embodiment, the support component 20 may not include the second support portion 300, and the support body 100 may not have the second air chamber 104 and the second abutment hole 109. Compared to the support component 20 excluding the second support portion 300 and the support body 100 not having the second air chamber 104 and the second abutment hole 109, the support component 20 disclosed in this application, which includes a first support portion 200 and a second support portion 300, and the support body 100 having a first air chamber 103, a second air chamber 104, a first abutment hole 108, and a second abutment hole 109, can more quickly increase or decrease the display area of ​​the display device 1.

[0087] Please see Figure 8 and Figure 9 , Figure 8 for Figure 1 The display device shown is a schematic diagram of the second cross-section along direction II. Figure 9 for Figure 6 The second cross-section of the display device shown is a schematic diagram of its structure along the II-II direction. Figure 8 The display device 1 shown is Figure 2The differences of the display device 1 shown and Figure 9 The display device 1 shown is Figure 7 The difference in the display device 1 shown is that: Figure 8 and Figure 9 The display device 1 shown also includes gears and racks. Figure 8 The display device 1 shown is Figure 2 The description of the display device 1 shown in the diagram where the structure is the same as the description of the display device 1 shown in the diagram and the description of the display device 1 shown in the diagram. Figure 9 The display device 1 shown is Figure 7 For a description of the structural similarities of the display device 1 shown, please refer to [link / reference needed]. Figures 2 to 7 The relevant descriptions will not be repeated here.

[0088] Specifically, the support assembly 20 further includes a first gear 610, a first rack 620 and a first connector 630, a second gear 710, a second rack 720 and a second connector 730.

[0089] like Figure 8 and Figure 9 As shown, the first connector 630 is connected to the side of the support body 100 facing the X-axis, and the first connector 630 is fixedly connected to the support body 100. The first gear 610 is disposed at the end of the first connector 630 opposite to the support body 100, and the first gear 610 is fixedly connected to the support body 100.

[0090] The second connector 730 is connected to the side of the support body 100 facing the opposite direction of the X-axis, and the second connector 730 is fixedly connected to the support body 100. The second gear 710 is disposed at the end of the second connector 730 opposite to the support body 100, and the second gear 710 is fixedly connected to the support body 100.

[0091] The first support member 210 has a first receiving groove 214, the opening of which faces the opposite direction of the X-axis. The height of the first receiving groove 214 is lower than the height of the first abutment hole 108, that is, the first receiving groove 214 is located below the first abutment hole 108 along the Z-axis. The second support member 310 has a second receiving groove 314, the opening of which faces the X-axis. The height of the second receiving groove 314 is lower than the height of the second abutment hole 109, that is, the second receiving groove 314 is located below the second abutment hole 109 along the Z-axis.

[0092] The first rack 620 is disposed on the side wall of the first receiving groove 214 and is fixedly connected to the side wall of the first receiving groove 214. The second rack 720 is disposed on the side wall of the second receiving groove 314 and is fixedly connected to the side wall of the second receiving groove 314.

[0093] The first gear 610 and the first connecting member 630 are both disposed within the first receiving groove 214. The first gear 610 meshes with the first rack 620, and the first rack 620 can reciprocate relative to the first gear 610 along the X-axis. The second gear 710 and the second connecting member 730 are both disposed within the second receiving groove 314. The second gear 710 meshes with the second rack 720, and the second rack 720 can reciprocate relative to the second gear 710 along the X-axis.

[0094] Understandably, the engagement of the first gear 610 with the first rack 620 makes the reciprocating motion of the first support portion 200 relative to the support body 100 more stable. Similarly, the engagement of the second gear 710 with the second rack 720 makes the reciprocating motion of the second support portion 300 relative to the support body 100 more stable.

[0095] In exemplary embodiments, such as Figure 8 and Figure 9 As shown, the first support portion 200 further includes a first telescopic member 280, which is disposed on the first support member 210 and is fixedly connected to both the first support member 210 and the support body 100. The upper surface of the first telescopic member 280 is flush with the main support surface 101. The second support portion 300 further includes a second telescopic member 380, which is disposed on the second support member 310 and is fixedly connected to both the second support member 310 and the support body 100. The upper surface of the second telescopic member 380 is flush with the main support surface 101.

[0096] Wherein, the upper surface of the first telescopic member 280 is the surface of the first telescopic member 280 facing the Z-axis direction, and the upper surface of the second telescopic member 380 is the surface of the second telescopic member 380 facing the Z-axis direction.

[0097] In an exemplary embodiment, the display screen 10 is located on the upper surface of the first telescopic member 280, the main support surface 101, and the upper surface of the second telescopic member 380.

[0098] Understandably, the first telescopic member 280 is used to extend and retract to accommodate the movement of the first support portion 200 relative to the support body 100, preventing gaps from appearing between the first support portion 200 and the support body 100, which would result in the display screen 10 not receiving sufficient support. Similarly, the second telescopic member 380 is used to extend and retract to accommodate the movement of the second support portion 300 relative to the support body 100, preventing gaps from appearing between the second support portion 300 and the support body 100, which would also result in the display screen 10 not receiving sufficient support.

[0099] Please see Figure 10 and Figure 11 , Figure 10 for Figure 1 The display device shown is a schematic diagram of a third cross-section along direction II. Figure 11 for Figure 6 The display device shown is a schematic diagram of the third cross-section along the II-II direction. Figure 10 The display device 1 shown is Figure 8 The differences of the display device 1 shown and Figure 11 The display device 1 shown is Figure 9 The difference in the display device 1 shown is that: Figure 10 and Figure 11 The display device 1 shown also includes a control unit and a power supply. Figure 10 The display device 1 shown is Figure 8 The description of the display device 1 shown in the diagram where the structure is the same as the description of the display device 1 shown in the diagram and the description of the display device 1 shown in the diagram. Figure 11 The display device 1 shown is Figure 9 For a description of the structural similarities of the display device 1 shown, please refer to [link / reference needed]. Figure 8 and Figure 9 The relevant descriptions will not be repeated here.

[0100] Specifically, the display device 1 includes a control unit 50 and a power supply 60. The control unit 50 is electrically connected to the power supply 60, which supplies power to the control unit 50. The control unit 50 is also electrically connected to the electromagnet 410 of the air compression assembly 400, and the control unit 50 intermittently supplies power to the electromagnet 410, causing the electromagnet 410 to generate an intermittent geomagnetic field. The current supplied by the control unit 50 to the electromagnet 410 can be a pulsed current.

[0101] In an exemplary embodiment, the control unit 50 is also electrically connected to the first pressure sensor 550, the second pressure sensor 560, the first switching valve 510, and the second switching valve 520, respectively.

[0102] When the first pressure sensor 550 fails to detect the first piston assembly 220 and the second pressure sensor 560 fails to detect the second piston assembly 320, the control unit 50 controls the first switching valve 510 to open and the second switching valve 520 to close. The first switching valve 510 remains open and the second switching valve 520 remains closed until the first piston assembly 220 moves from the bottom dead center to the top dead center and the second piston assembly 320 moves from the bottom dead center to the top dead center.

[0103] When the first pressure sensor 550 detects the first piston assembly 220 and the second pressure sensor 560 detects the second piston assembly 320, the control unit 50 controls the first switching valve 510 to close and the second switching valve 520 to open. Before the first piston assembly 220 moves from the top dead center to the bottom dead center and the second piston assembly 320 moves from the top dead center to the bottom dead center, the first switching valve 510 remains closed and the second switching valve 520 remains open.

[0104] In an exemplary embodiment, the control unit 50 is a chip. The VCC terminal of the chip is electrically connected to the power supply 60, the GND terminal of the chip is grounded, and the I / O pins of the chip are electrically connected to the electromagnet 410. The RDX pin of the chip is electrically connected to the CPU of the display device 1. The display device also has a built-in APP, through which instructions are given to the CPU. The CPU sends signals to the control unit 50, and the control unit 50 controls the increase or decrease of the display area of ​​the display device 1, realizing digital operation of increasing or decreasing the display area of ​​the display device 1, and the operation is simple.

[0105] In summary, the display device 1 disclosed in this application includes a display screen 10 and a support assembly 20. The support assembly 20 includes a support body 100, a first support portion 200, and an air compression assembly 400. The support body 100 has an air cavity 102 and a first air chamber 103, which are spaced apart. The first support portion 200 includes a first support member 210, a first piston assembly 220, and a first rotating member 240. The first support member 210 has a first accommodating space 212, and the first rotating member 240 is disposed within the first accommodating space 212. The first piston assembly 220 is fixed to one side of the first support member 210, the first support member 210 is disposed on the support body 100, and the first piston assembly 220 is disposed within the first air chamber 103. The first piston assembly 220 divides the first air chamber 103 into a first rod chamber 103a and a first rodless chamber 103b. The air chamber 102 is selectively connected to either the first rod chamber 103a or the first rodless chamber 103b. The air compression assembly 400 is disposed within the air chamber 102. The display screen 10 is disposed on the support body 100, on the first support member 210, and within the first accommodating space 212. The display screen 10 is arranged around the first rotating member 240. The air compression assembly 400 injects gas into the first rodless chamber 103b. The first support member 200 moves in the X-axis direction to drive the display screen 10 located in the first accommodating space 212 to unfold onto the first support member 210. The air compression assembly 400 injects gas into the first rod-shaped cavity 103a, the first support 200 moves away from the X-axis direction, and the first rotating member 240 rotates to drive the display screen 10 located on the first support 210 to retract into the first accommodating space 212, thereby changing the size of the display area. Furthermore, the display device 1 has no gaps, allowing it to be applied to small-sized displays. Therefore, the display device 1 of this application not only solves the defect of gaps existing in spliced ​​displays in the prior art, but also achieves a small display area, meeting the needs of different display sizes.

[0106] Furthermore, the display device 1 provided in this application can achieve a variety of different display areas and can precisely control the size of the display area. Moreover, the increased display area provides better support for the display screen 10.

[0107] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0108] It should be understood that the application of this application is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims. Those skilled in the art will understand that implementing all or part of the processes of the above embodiments, and making equivalent changes according to the claims of this application, still falls within the scope of this application.

Claims

1. A display device comprising a display screen for displaying images, characterized in that, The display device further includes a support assembly, the support assembly comprising: A support body, wherein the support body has an air cavity and a first air chamber, and the air cavity and the first air chamber are spaced apart; A first support portion includes a first support member, a first piston assembly, a first air nozzle, and a first rotating member. The first support member has a first accommodating space, the first rotating member is disposed within the first accommodating space, the first air nozzle is disposed within the first accommodating space, the first piston assembly is fixed to one side of the first support member, the first support member is disposed on the support body, the first piston assembly is disposed within the first air chamber, the first piston assembly divides the first air chamber into a first rod chamber and a first rodless chamber, the air chamber selectively communicates with the first rod chamber or the first rodless chamber, the first support portion has a first gas channel, the first gas channel communicates with the first accommodating space, and the first gas channel communicates with the first rod chamber through the surface of the first piston assembly, the first air nozzle is used to blow air onto the first rotating member to drive the first rotating member to rotate; An air compression assembly is disposed within the air chamber; The display screen is disposed on the supporting body, the first supporting member, and within the first accommodating space. The display screen is arranged around the first rotating member. The air compression assembly injects gas into the first rodless cavity. The first supporting member moves in a first direction to drive the display screen located in the first accommodating space to unfold onto the first supporting member. The air compression assembly injects gas into the first rod cavity. The first supporting member moves away from the first direction, causing the first rotating member to rotate, thereby driving the display screen located on the first supporting member to retract into the first accommodating space.

2. The display device as claimed in claim 1, characterized in that, The support assembly further includes a first magnet, which is disposed on the bottom wall of the first air chamber and is magnetically attracted to the first piston assembly.

3. The display device as claimed in claim 1, characterized in that, The supporting body is provided with a second air chamber, which is spaced apart from the first air chamber and the air cavity, respectively. The support assembly further includes a second support portion, which includes a second support member, a second piston assembly, and a second rotating member. The second support member has a second accommodating space, and the second rotating member is disposed within the second accommodating space. The second piston assembly is fixed to one side of the second support member. The second support member is disposed on the support body, and the second piston assembly is disposed within the second air chamber. The second piston assembly divides the second air chamber into a second rod chamber and a second rodless chamber. The air chamber selectively communicates with either the second rod chamber or the second rodless chamber. The display screen is disposed on the supporting body, the second supporting member, and within the second accommodating space. The display screen is arranged around the second rotating member. The air compression assembly injects gas into the second rodless cavity. The second supporting member moves away from the first direction to drive the display screen located in the second accommodating space to unfold onto the second supporting member. The air compression assembly injects gas into the second rod cavity. The second supporting member moves toward the first direction, causing the second rotating member to rotate to drive the display screen located on the second supporting member to retract into the second accommodating space.

4. The display device as claimed in claim 3, characterized in that, The support assembly also includes a second magnet, which is disposed on the bottom wall of the second air chamber and is magnetically attracted to the second piston assembly.

5. The display device as claimed in claim 3, characterized in that, The second support portion further includes a second air nozzle, which is disposed within the second accommodating space. The second support portion has a second gas channel, which communicates with the second accommodating space. The second gas channel communicates with the second rod chamber through the surface of the second piston assembly. The second air nozzle is used to blow air onto the second rotating member to drive the second rotating member to rotate.

6. The display device according to any one of claims 3-5, characterized in that, The supporting body is provided with a first air passage, a second air passage and a connecting air passage. The first air passage is connected to the air cavity, the first rodless cavity and the second rodless cavity respectively. The second air passage is connected to the air cavity and the second rod cavity respectively. The connecting air passage is connected to the first rod cavity and the second rod cavity respectively. The support assembly further includes a first switching valve and a second switching valve. The first switching valve is disposed in the first air passage, and the second switching valve is disposed in the second air passage. The first switching valve and the second switching valve are not simultaneously activated.

7. The display device as claimed in claim 6, characterized in that, The air compression assembly includes an electromagnet, a magnetic component, an elastic component, and a one-way valve. The electromagnet is disposed on the bottom wall of the air chamber, and the one-way valve is disposed at the opening of the air chamber. The magnetic component and the elastic component are disposed between the electromagnet and the one-way valve. The magnetic component and the elastic component are fixedly connected, and the elastic component is fixedly connected to the side wall of the air chamber. The electromagnet is used to intermittently generate a magnetic field to drive the magnetic component to reciprocate within the air chamber.

8. The display device as claimed in claim 7, characterized in that, The support assembly further includes a first pressure sensor and a second pressure sensor. The first pressure sensor is disposed at the opening of the first air chamber, and the second pressure sensor is disposed at the opening of the second air chamber. The first pressure sensor is used to detect the position of the first piston assembly in the first air chamber, and the second pressure sensor is used to detect the position of the second piston assembly in the second air chamber.

9. The display device as claimed in claim 8, characterized in that, The display device also includes a control unit, which is electrically connected to the electromagnet and is used to intermittently supply power to the electromagnet. The control unit is also electrically connected to the first pressure sensor, the second pressure sensor, the first switching valve, and the second switching valve, respectively. When the first pressure sensor does not detect the first piston assembly and the second pressure sensor does not detect the second piston assembly, the control unit controls the first switching valve to open and controls the second switching valve to close. When the first pressure sensor detects the first piston assembly and the second pressure sensor detects the second piston assembly, the control unit controls the first switching valve to close and controls the second switching valve to open.

Images