Display device and method of testing the same

Abstract

The application provides a display device and a testing method thereof. The display device comprises a first support, a second support, a screen assembly, a first driving assembly, a second driving assembly and a control assembly. Part of the screen assembly is arranged on the first support, and part of the screen assembly is arranged on the second support. The first driving assembly drives the screen assembly to ascend by driving the first support. The second driving assembly is connected with one end of the screen assembly and drives the screen assembly to descend. The display device provided by the application can prevent the screen from being cracked and having black spots due to uneven stress during the ascending or descending of the screen assembly by arranging the first driving assembly and the second driving assembly, and controlling the screen assembly to ascend only by the first driving assembly and to descend only by the second driving assembly.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display device and a testing method thereof. Background Technology

[0002] A sliding screen is a display screen that can move freely up and down or left and right on a specific track and adjust its position. It has the advantages of flexible space utilization, adjustable viewing angle, and rich interactive experience, and is increasingly favored by consumers.

[0003] Flexible screens have better flexibility and bending resistance than traditional rigid screens, and are often used as sliding screens. Flexible OLED screens based on AMOLED are increasingly being used in sliding screens.

[0004] However, during testing and use, flexible OLED sliding screens often develop cracks or black spots due to screen sliding, affecting the user experience. Summary of the Invention

[0005] In view of this, the purpose of this application is to provide a display device that prevents screen cracks or black spots from appearing during testing and use.

[0006] For the purposes described above, this application provides a display device comprising:

[0007] The first support member is movable up and down;

[0008] The second support member is located below the first support member in the vertical direction;

[0009] A screen assembly, wherein part of the screen assembly is fixed to the first support member and part of the screen assembly is fixed to the second support member;

[0010] A first driving component is disposed on the first support member and can drive the first support member to move upward to move the screen component upward.

[0011] A second driving component is disposed on the second support member and connected to one end of the screen component to drive the screen component to descend.

[0012] and a control component, wherein the control component is electrically connected to the first drive component and the second drive component respectively;

[0013] The screen component includes an upward state and a downward state. When the screen component is in the upward state, the first driving component is in the working state and the second driving component is in the non-working state. When the screen component is in the downward state, the second driving component is in the working state and the first driving component is in the non-working state.

[0014] In one embodiment, the screen assembly includes a screen body and a connector and a fixing member respectively disposed on both sides of the screen body; a portion of the screen body is connected to the first support member through the connector and is limited and fixed by the fixing member; a portion of the screen body is fixedly limited to the second support member by the fixing member.

[0015] In one embodiment, the first driving component includes a first driving device and a first slider; the second driving component includes a second driving device and a second slider; the first driving device and the second driving device respectively drive the first slider and the second slider to move; the first slider is connected to the first support member; and the second slider is connected to one end of the screen.

[0016] In one embodiment, one end of the screen body is provided with a threaded structure, and the second slider is provided with a threaded structure that mates with one end of the screen body. One end of the screen body and the second slider are connected by a threaded connection.

[0017] In one embodiment, the first drive device and the second drive device are servo motors and screws or reels or cylinders.

[0018] In one embodiment, the screen body includes an AMOLED screen body; the connector includes adhesive tape; and the fastener includes a pressure strip.

[0019] In one embodiment, the first driving component and a portion of the screen components are respectively disposed on opposite sides of the first support member; the second driving component and a portion of the screen components are both disposed on the same side of the second support member.

[0020] In one embodiment, the first support member includes a first support plate, the second support member includes a second support plate, the first support plate and the second support plate are connected and have an "L" shaped structure.

[0021] In one embodiment, the control component includes a control module, a counting module, and a display module. The control module is used to control the first driving component and the second driving component respectively. The counting module is used to count the number of times the screen component moves and transmit the data to the display module. The display module is used to display the number of times the screen component moves.

[0022] Based on the same inventive concept, this application also discloses a display device testing method, applied to any of the display devices described above, comprising:

[0023] The control component controls the first driving component to be in a working state, the first driving component drives the first support member to move upward, thereby causing the screen component to move upward, and the control component controls the second driving component to be in a non-working state;

[0024] The control component controls the second driving component to be in a working state, the second driving component drives the screen component to descend, and the control component controls the first driving component to be in a non-working state.

[0025] The control component is used to count the number of times the screen component moves during the process of the screen component moving up or down.

[0026] Compared with the prior art, the display device provided in this application, by setting a first driving component and a second driving component, controls the screen component to move upward only through the first driving component and controls the screen component to move downward only through the second driving component. This can prevent uneven force on the screen component during the upward or downward movement, which could lead to cracks in the screen, thereby avoiding black spots caused by encapsulation failure, and improving the lifespan and display performance of the screen. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A cross-sectional view of a display device provided in an embodiment of this application;

[0029] Figure 2 for Figure 1 The diagram shows the structure of the screen component after it has been unfolded.

[0030] Figure 3 A cross-sectional view of a screen assembly and a first support member provided in another embodiment of this application;

[0031] Figure 4 A flowchart of a display device testing method provided in another embodiment of this application.

[0032] Marker explanation:

[0033] 100. Display device;

[0034] 1. First support component; 11. Bottom; 12. Support section;

[0035] 2. Second support component;

[0036] 3. Screen assembly; 31. Screen body; 32. Fixtures;

[0037] 4. First driving component; 41. First driving device; 42. First slider;

[0038] 5. Second drive assembly; 51. Second drive device; 52. Second slider. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0040] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0041] Up-and-down sliding screen is a screen display technology that allows the display screen to slide back and forth along the vertical direction, thereby meeting the usage needs in different scenarios. It is widely used in mobile devices and automotive displays.

[0042] Sliding screens typically consist of a flexible substrate paired with an AMOLED screen. A flexible substrate is a base material with soft and bendable properties. It is usually made of plastic film, metal foil, paper-based materials, etc. It has good flexibility and insulation, and is thin and light. It plays an important role in flexible electronic devices, such as support and insulation. It is often used in the field of flexible displays to provide support for the light-emitting layer and other functional layers, enabling the screen to achieve functions such as bending and folding.

[0043] AMOLED is an advanced display technology that consists of a substrate, a TFT (Thin Film Transistor) array, an OLED layer, electrodes, and other components. The TFT array acts as an active control element, used to control the OLED of each pixel to emit light.

[0044] Each pixel of an AMOLED screen can emit light independently, so it does not need to rely on a backlight like LCD (Liquid Crystal Display). This allows AMOLED screens to display deep blacks and have higher contrast. At the same time, the color and brightness performance of AMOLED screens are more consistent from all viewing angles, and the viewing angle can usually reach 170° or more, providing a better visual experience.

[0045] Therefore, AMOLED is increasingly being used as the screen component of flexible displays in fields such as automotive displays and mobile devices, and is widely favored by consumers.

[0046] Since the mainstream packaging method for AMOLED typically uses TFE (Thin Film Encapsulation), which is a multi-layer organic-inorganic stacking method, the inorganic layer (such as silicon-nitrogen or silicon-oxygen) acts as a barrier against water and oxygen, while the organic layer acts as a buffer layer, encapsulating foreign objects and flattening the covering film layer to prevent defects from occurring during the inorganic layer manufacturing process. However, because TFE packaging is a multi-layer thin film structure, it is difficult to repair once damaged. Furthermore, sliding screens using flexible AMOLED displays often slip during use, posing a risk of screen structure detachment and TFE packaging damage.

[0047] Therefore, the purpose of this application is to provide a display device to solve the above-mentioned problems.

[0048] Please refer to Figures 1 to 3 As shown, a display device 100 provided in an embodiment of this application includes: a first support member 1, a second support member 2, a screen assembly 3, a first driving assembly 4, a second driving assembly 5, and a control assembly (not shown).

[0049] The first support member 1 is movable up and down. Vertically, the second support member 2 is located below the first support member 1. Part of the screen assembly 3 is fixed to the first support member 1, and part of the screen assembly 3 is fixed to the second support member 2. A first drive assembly 4 is disposed on the first support member 1 and can drive the first support member 1 to move upwards, thereby causing the screen assembly 3 to move upwards. A second drive assembly 5 is disposed on the second support member 2 and connected to one end of the screen assembly 3, thereby driving the screen assembly 3 to descend. A control assembly is electrically connected to both the first drive assembly 4 and the second drive assembly 5.

[0050] The screen component 3 includes an upward state and a downward state. When the screen component 3 is in the upward state, the first driving component 4 is in the working state and the second driving component 5 is in the non-working state. When the screen component 3 is in the downward state, the second driving component 5 is in the working state and the first driving component 4 is in the non-working state.

[0051] Since the screen component 3 is usually composed of a multi-layer structure including a substrate, electrodes, light-emitting layer and encapsulation layer, uneven stress on each part during the upward or downward movement can lead to separation between layers, allowing external moisture or oxygen to penetrate and causing irreversible black spots to form on the oxidized light-emitting material.

[0052] If one side of the screen assembly 3 is fixed, and the entire screen assembly 3 is moved up or down only by moving the opposite side, this will cause uneven local stress on the screen assembly 3 during the movement, resulting in the screen assembly 3 being stretched and deformed, causing cracks, and damaging the encapsulation of the screen assembly 3, forming black spots. This application sets up a first driving component 4 and a second driving component 5. The first driving component 4 drives the first support member 1 to move up, thereby moving the screen assembly 3 connected to the first support member 1 to move up. The second driving component 5 is connected to one end of the screen assembly 3 and directly drives the screen assembly 3 to move down. At the same time, the second driving component 5 does not work when the screen assembly 3 moves up, and the first driving component 4 does not work when the screen assembly 3 moves down. This can make the screen assembly 3 be subjected to uniform force during the movement, thereby preventing the screen assembly 3 from tearing and forming black spots.

[0053] The display device 100 provided in this application controls the first driving component 4 or the second driving component 5 to drive the screen component 3 to move up or down respectively through the control component. The control component can adjust the driving force and operating speed of the first driving component 4 and the second driving component 5, thereby accurately controlling the upward and downward speed of the screen component 3, so that the upward and downward movement of the screen component 3 is more stable.

[0054] Specifically, when the screen assembly 3 moves upward, the control component controls the first drive component 4 to be in an active state. The first drive component 4 drives the first support member 1 to move upward, thereby moving the screen assembly 3 upward. At the same time, the control component keeps the second drive component 5 in a non-active state without driving force. The second drive component 5 only follows the movement of the screen assembly 3. Compared with the first drive component 4 being directly connected to the screen assembly 3 to drive the screen assembly 3 upward, the first support member 1 has a larger contact area with the screen assembly 3, which can provide more stable support for the screen assembly 3. This allows the screen assembly 3 to remain stable during the upward movement, avoiding uneven force on the screen assembly 3 caused by the first drive component 4 shaking. This ensures the stability of the screen assembly 3 during upward movement and reduces damage to the screen assembly 3.

[0055] When screen assembly 3 descends, the control component activates the second drive component 5, which then drives screen assembly 3 to descend. Simultaneously, the control component keeps the first drive component 4 in a non-operating state without driving force. The first drive component 4 and the first support member 1 only follow the movement of screen assembly 3. Since the second drive component 5 is connected to one end of screen assembly 3, directly driving its movement, the first support member 1 provides support for screen assembly 3, reducing swaying during descent. Furthermore, the support function of the first support member 1 works in conjunction with the driving force of the second drive component 5, ensuring even force distribution across all parts of screen assembly 3. This guarantees the stability and safety of screen assembly 3 during descent, preventing localized deformation and wrinkles that could lead to cracks and black spots.

[0056] Meanwhile, the first driving component 4 and the second driving component 5 control the upward and downward movement of the screen component 3 respectively. The control component does not need to implement a collaborative working algorithm for the first driving component 4 and the second driving component 5, which can save development costs. Furthermore, the first driving component 4 and the second driving component 5 work independently. Even if one driving component fails, the other driving component may still maintain some functions, which improves the reliability of the display device 100 to a certain extent and reduces the risk that the lifting and lowering function of the screen component 3 will fail due to the failure of a single driving component. Finally, the independent operation of the first driving component 4 and the second driving component 5 can reduce the workload of a single driving component, thereby reducing the wear and tear of the driving component, increasing the service life of the display device 100, and reducing maintenance costs and repair frequency.

[0057] This application uses a first driving component 4 to drive the screen component 3 upwards and a second driving component 5 to drive the screen component 3 downwards, instead of the reverse—the first driving component 4 driving the screen component downwards and the second driving component 5 driving the screen component 3 upwards—for structural considerations of the display device 100. Please refer to [link / reference needed]. Figure 1 As shown, the first driving component 4 is located above the second driving component 5. If the screen component 3 is driven to descend by the first driving component 4, the part of the screen component 3 connected to the first support member 1 will push the part of the screen component 3 connected to the second driving component 5 when descending, so that the entire screen component 3 descends. Since the screen component 3 is usually a flexible screen, in this case, the screen component 3 may bend at the part where the two sides meet, resulting in screen cracks and causing the encapsulation to fail and black spots to appear.

[0058] Similarly, it can be seen that driving the screen component 3 by the second driving component 5 will also cause this problem. Therefore, the display device 100 provided in this application only drives the screen component 3 to move upward by the first driving component 4 and drives the screen component 3 to move downward by the second driving component 5.

[0059] Optionally, the first support member 1 includes a first support plate, the second support member 2 includes a second support plate, the first support plate and the second support plate are connected to each other and have an "L" shape, and the screen assembly 3 is in close contact with the first support plate and the second support plate and also has an "L" shape.

[0060] This design enables a larger display area for the screen component 3 within the limited space, cleverly avoiding other components in the display device 100, resulting in a more compact design and high space utilization.

[0061] Meanwhile, the "L"-shaped structure can increase the contact area and connection points between the screen assembly 3 and the first and second support plates. During the lifting process, the "L"-shaped structure can distribute the force on the screen assembly 3 more evenly, so that the screen assembly 3 is subjected to uniform force, preventing the screen assembly 3 from being deformed or damaged due to excessive local force. In addition, the corners of the "L"-shaped structure can also strengthen the screen assembly 3, making the display device 100 more stable as a whole and less prone to shaking or twisting.

[0062] Furthermore, the screen component 3 has an "L" shaped structure, which can bring a unique visual effect to the user. During the raising and lowering of the screen component 3, the shape change of the "L" shape can create some special animation effects or visual transition effects, increasing the technological feel and fun of the display device 100.

[0063] Furthermore, the screen component 3 has an "L"-shaped structure, and can be designed as display areas with specific functions in each of the two parts of the "L" shape according to different usage scenarios and user needs. For example, in some implementations, one part of the "L" shape can serve as a quick operation area for frequently used functions, while the other part serves as the main display area. During the raising and lowering process, the layout and display content of these areas can be dynamically adjusted to improve the user's operational convenience and visual experience.

[0064] Finally, the first and second support plates form an "L" shape, which provides some protection for the edges of the screen assembly 3. This "L" shape reduces friction and impact on the edges of the screen assembly 3 when it is retracted or extended. For example, when the screen assembly 3 is lowered and retracted, the "L"-shaped edges of the first and second support plates can better fit with the surrounding frame or protective structure, reducing direct contact between the edges of the screen assembly 3 and other components, thereby reducing the possibility of edge damage and extending the lifespan of the screen assembly 3.

[0065] In other embodiments, the first support plate and the second support plate may also be in other shapes such as "Z", "U" or scroll, and this application does not limit them.

[0066] Optionally, the first support plate and the second support plate can be two parts of a single-piece support plate. Please refer to [reference needed]. Figure 1 As shown, the first support plate is a vertical section, and the second support plate is a horizontal section. The first and second support plates are integrally formed and perpendicular to each other in an "L" shape, which can improve the rigidity of the overall structure, make the stress distribution uniform, and avoid the stress concentration problem caused by screwing or welding. At the same time, it can also reduce assembly steps, shorten the production cycle, and improve production efficiency. Since the first and second support plates are connected by integral molding, they have a consistent appearance, uniform surface treatment, no splicing marks, and are more aesthetically pleasing.

[0067] In other embodiments, the first support plate and the second support plate can also be two separate support plates, formed independently and connected by screws or welding. This modular design allows the first and second support plates to be designed and manufactured independently, thus adapting to different screen component 3 sizes; and when the first or second support plate is partially damaged, only the damaged part needs to be replaced instead of the entire plate, reducing maintenance costs; finally, the separate forming of the first and second support plates reduces packaging volume, facilitates long-distance transportation, and saves transportation costs.

[0068] Optionally, the first support plate and the second support plate may be made of organic polymer materials such as PI (polyimide), PET (polyethylene terephthalate), or PEN (polyethylene naphthalate), or inorganic materials such as metal foil or ceramic composite materials, or composite multilayer materials such as organic-inorganic composite substrates or metal-polymer stacked substrates. This application does not limit the scope of these materials.

[0069] Optionally, the first driving component 4 and the partial screen component 3 are respectively disposed on opposite sides of the first support member 1. The second driving component 5 and the partial screen component 3 are both located on the same side of the second support member 2.

[0070] The fact that the first driving component 4 and part of the screen component 3 are both located on the same side of the first support member 1 will cause the first driving component 4 and the screen component 3 to generate torque on the first support member 1 on the same side, making the first support member 1 prone to bending to one side of the first driving component 4 and the screen component 3. At the same time, the first driving component 4 will generate heat when it is working, and the heat generated by the first driving component 4 will be dissipated to the screen component 3, accelerating the aging of the screen component 3 and reducing its service life.

[0071] Therefore, by placing the first driving component 4 and part of the screen component 3 on opposite sides of the first support member 1, the torques exerted by the first driving component 4 and the screen component 3 on the screen component 3 can be partially offset, thereby reducing the deformation of the first support member 1; and it can prevent the heat of the first driving component 4 from dissipating to the screen component 3, and both the first driving component 4 and the screen component 3 can be cooled through the first support member 1, thereby optimizing the heat dissipation structure of the display device 100 and improving the service life of the display device 100.

[0072] Optionally, please refer to Figures 1 to 2 As shown, the screen assembly 3 includes a screen body 31 and connectors (not shown) and fasteners 32 respectively disposed on both sides of the screen body 31. Part of the screen body is connected to the first support member via the connectors and is fixed by the fasteners 32. Part of the screen body 31 is limited to the second support member 2 by the fasteners.

[0073] Because the thermal expansion coefficients of the screen body 31 and the first support member 1 and the second support member 2 are different, when the temperature changes, especially when the screen body 31 is working and generates a lot of heat, the screen body 31 and the first support member 1 and the second support member 2 expand to different degrees when heated, so internal stress will be generated between them.

[0074] Connecting the screen 31 to the first support member 1 via a connector ensures the stability of the screen 31's reference position. Furthermore, the screen 31 and the first support member 1 are positioned above the second support member 2, preventing the screen 31 from drooping due to its own weight. Additionally, the fixing member 32 secures the screen 31 to the first support member 1, preventing the screen 31 from falling off during the descent of the first support member 1 and ensuring smooth movement.

[0075] By fixing the screen 31 and the second support member 2 only through the fastener 32, the screen 31 can be allowed to freely expand and contract along the axial direction, thereby releasing most of the stress generated by thermal expansion, reducing the interaction force between the screen 31 and the second support member 2, and preventing the screen 31 from cracking and developing black spots due to stress.

[0076] Meanwhile, the screen body 31 is connected to the first support member 1 through the connector and the fixing member 32, which can serve as a rotation fulcrum. The screen body 31 and part of the second support member 2 serve as driven limiters to form a lever structure of "single point fixing + single point guiding". This can reduce the occurrence of creases or even tears in the middle of the screen body 31 due to excessive torque and improve the service life of the product.

[0077] Furthermore, the screen 31 and the second support member 2 are only fixed and limited by the fastener 32. In case of failure, only the fastener 32 needs to be removed and the screen 31 replaced to complete the repair, which can reduce the repair cost.

[0078] Finally, the screen 31 and the second support member 2 are fixed and limited only by the fixing member 32. When the screen 31 is raised and lowered, the connection part with the second support member 2 can be moved in a small range, thereby avoiding friction between the screen 31 and the second support member 2 and causing wear. The screen 31 and the first support member 1 are connected by the connector and the fixing member 32, which can improve the sealing level of the screen 31 and the first support member 1, prevent liquid and dust from entering, and improve the waterproof and dustproof level of the display device 100.

[0079] Optionally, the connector provided in this application is an adhesive tape, and the fixing member 32 provided in this application is a pressure strip. Specifically, the adhesive tape can be OCA optical adhesive or UV fixing adhesive, and the fixing member 32 fixes and limits the edge of the screen 31 to the first support member 1 and the second support member 2 respectively.

[0080] This application uses adhesive tape to connect and fix the screen body 31 to the first support member 1, and uses pressure strips to limit and fix the screen body 31 to the first support member 1; the screen body 31 and the second support member 2 are only limited and fixed by pressure strips, without the need for high-precision alignment, which can improve assembly efficiency and finished product yield, and improve production efficiency.

[0081] In other embodiments, the connector provided in this application may also be a bolt, a snap-fit, or a magnetic structure, etc., and this application does not limit it in this regard.

[0082] In other embodiments, the fastener 32 provided in this application may also be a magnetic snap fastener, gel, or positioning post, etc., and this application does not limit it.

[0083] Optionally, the screen 31 provided in this application can be an AMOLED screen. The AMOLED screen is directly attached to the first support member 1 and the second support member 2. It has a low bending radius and a low overall weight, so it is thinner and more flexible in shape. Therefore, the entire display device 100 can be applied to fields such as in-vehicle central control screens, wearable devices, or mobile devices. Furthermore, since the black pixels of the AMOLED screen do not emit light, it consumes less power when displaying dark content, which can extend the battery life of the display device 100. At the same time, each pixel of the AMOLED screen is dimmed independently, without the need for global dimming, which can improve the HDR (High Dynamic Range Imaging) display effect of the display device 100.

[0084] In other embodiments, the screen 31 of this application may also be a MicroLED (Micro Light-Emitting Diode) screen or an LCD screen, and this application does not limit it in this regard.

[0085] Please refer to Figure 2As shown, in one embodiment, the display device 100 provided in this application can be fixed by setting two independent fasteners 32 and respectively limiting and fixing the screen body 31 and the first support member 1 and the screen body 31 and the second support member 2.

[0086] In other embodiments, the display device 100 provided in this application may also use only one fixing member 32 to respectively limit and fix the screen body 31 and the first support member 1 and the screen body 31 and the second support member 2, and this application does not limit this.

[0087] Optionally, please refer to Figure 3 As shown, the first support member 1 includes a bottom 11 and a plurality of support portions 12 formed on the bottom 11. The support portions 12 can support the screen body 31, thereby maintaining uniform force during the upward or downward movement of the screen body 31 and preventing screen cracks and black spots from appearing on the screen body 31.

[0088] Specifically, the support part 12 can be as follows: Figure 3 The arrangement shown is regular, but it can also be distributed in the stress-concentrated parts of the screen 31 to make the screen 31 bear force evenly. This application does not limit this.

[0089] Optionally, please refer to Figure 1 As shown, the first driving assembly 4 includes a first driving device 41 and a first slider 42. The second driving assembly 5 includes a second driving device 51 and a second slider 52. The first driving device 41 and the second driving device 51 respectively drive the first slider 42 and the second slider 52 to move. The first slider 42 is connected to the first support member 1. The second slider 52 is connected to one end of the screen body 31.

[0090] This application connects the first slider 42 to the first support member 1, and the first driving device 41 drives the first slider 42 to move, thereby moving the first support member 1. The second slider 52 is connected to one end of the screen assembly 3, and the second driving device 51 drives the second slider 52 to move, thereby moving the screen assembly 3. The overall structure is simple and easy to install. It can ensure the stable operation of the screen assembly 3. By controlling the operating speed and driving force of the first driving device 41 and the second driving device 51, the speed of the screen assembly 3 moving up and down can be adjusted.

[0091] Optionally, the first driving device 41 and the second driving device 51 are a servo motor and a screw. One end of the screw is connected to the servo motor, and the other end is connected to the first slider 42 or the second slider 52. The rotational motion of the servo motor is converted into the horizontal motion of the screw through the servo motor and the screw, thereby driving the first slider 42 or the second slider 52 to move.

[0092] The servo motor is equipped with an encoder, which can support three-loop control of position, speed and torque, and has high positioning accuracy, which can reduce the movement deviation of the screen component 3. Moreover, due to the small inertia of the motor rotor and the short start and stop time, it can achieve rapid acceleration and deceleration, adapt to high-frequency reciprocating motion, and has the advantages of high response speed and high dynamic performance. Finally, the servo motor can support constant torque output and precisely control the magnitude of the output force through the control current loop, thereby adjusting the movement speed of the screen component 3.

[0093] The screw used in this application can be a ball screw or a trapezoidal screw. The ball screw has a small pitch error, and its preload design (such as double nut preload) can eliminate axial clearance and achieve backlash-free transmission. That is, by designing to eliminate the clearance between transmission components, the backlash error during reverse movement is avoided, thereby achieving high-precision positioning and uniform force distribution. The trapezoidal screw, on the other hand, has a high self-locking property because its lead angle is smaller than the friction angle, and it can maintain its position without additional braking.

[0094] This application uses a servo motor and screw as the driving device, which has high transmission accuracy and positioning stability, can withstand greater axial load, and provide greater thrust, thereby meeting the thrust requirements of screen components 3 of different sizes. Moreover, the structure is simple and convenient for daily maintenance.

[0095] In another embodiment, the first drive device 41 and the second drive device 51 can be cylinders. Cylinders consist of only a few components such as a cylinder body, piston, piston rod, and seals. The transmission structure is simple, and no lubrication is required, only periodic oiling is needed. There are fewer points of failure, and maintenance is simpler. Since the cylinder uses compressed air as a power source, the compressibility of compressed air allows it to release energy quickly, enabling high-speed start and stop of the cylinder. This results in a short response time for the cylinder, making it suitable for high-frequency reciprocating motion. Furthermore, the elasticity of compressed air allows the cylinder to buffer impacts. When the cylinder load exceeds the rated value, the cylinder will automatically stop without damage. The cylinder is also resistant to dust, oil, and moisture, and has explosion-proof function. It has low usage and operating costs, thus saving costs.

[0096] In other embodiments, the first driving device 41 and the second driving device 51 can also be a scroll, which enables the screen assembly 3 to be stored in a spiral winding form, thereby achieving a lightweight design and saving space; the scroll usually adopts a combination of servo motor and synchronous belt, which can ensure that the winding tension of the screen assembly 3 is uniform and avoid wrinkling of the screen assembly 3.

[0097] Optionally, one end of the screen body 31 is provided with a threaded structure, and the second slider 52 is provided with a threaded structure that mates with one end of the screen body 31. One end of the screen body 31 and the second slider 52 are connected by a threaded connection.

[0098] The display device 100 provided in this application has a screen 31 connected to a second slider 52 via a threaded structure. The gravity generated by the screen 31 itself can form a self-locking structure with the second slider 52 through the thread, which can prevent the screen 31 from falling suddenly. At the same time, the threaded structure can improve the structural strength between the screen 31 and the second slider 52. Finally, the threaded structure has the advantages of compact space and lightweight.

[0099] Optionally, the control components include a control module, a counting module, and a display module. The control module controls the first driving component 4 and the second driving component 5 respectively. The counting module counts the number of movements of the screen component 3 and transmits the data to the display module. The display module displays the number of movements of the screen component 3.

[0100] Since the display device 100 undergoes reliability testing before leaving the factory to determine the product's condition, this application sets up a counting module and a display module. The counting module can count the number of times the screen component 3 moves and display the count through the display module, thus facilitating testing by testers.

[0101] The display device 100 provided in this application can be used as a vehicle central control screen and applied in the vehicle field; it can also be used as a projection screen and applied in the projection display field, etc. This application does not limit it in this regard.

[0102] Please refer to Figure 4 As shown, based on the same inventive concept, another embodiment of this application also discloses a testing method for a display device 100, applied to the display device 100 in any of the above embodiments. The testing method for the display device 100 includes the following steps:

[0103] Step S10: The control component controls the first driving component 4 to be in working state. The first driving component 4 drives the first support member 1 to move upward, thereby driving the screen component 3 to move upward. The control component controls the second driving component 5 to be in non-working state.

[0104] Step S20: The control component controls the second driving component 5 to be in working state, the second driving component 5 drives the screen component 3 to descend, and the control component controls the first driving component 4 to be in non-working state.

[0105] Step S30: Count the number of times the screen component 3 moves during the process of the screen component 3 moving up or down using the control component.

[0106] The display device testing method provided in this application counts the number of times the screen component 3 moves by a control component, thereby converting the number of times the screen component 3 moves into the number of tests performed on the display device 100, which facilitates testing of the display device 100 before it leaves the factory. Furthermore, since the upward and downward movement of the screen component 3 is controlled by the first driving component 4 and the second driving component 5, respectively, and the first driving component 4 and the second driving component 5 are electrically connected to the control component, the control component can directly read the number of times the first driving component 4 and the second driving component 5 operate, thereby obtaining the number of times the screen component 3 moves, which is more convenient and faster.

[0107] Although this application has been described in conjunction with specific embodiments thereof, many substitutions, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description.

[0108] It should be noted that the above description describes some embodiments of this application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in a different order than that shown in the above embodiments and still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0109] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A display device, characterized in that, include: The first support member is movable up and down; The second support member is located below the first support member in the vertical direction; A screen assembly, wherein part of the screen assembly is fixed to the first support member and part of the screen assembly is fixed to the second support member; A first driving component is disposed on the first support member and can drive the first support member to move upward to move the screen component upward. A second driving component is disposed on the second support member and connected to one end of the screen component to drive the screen component to descend. and a control component, wherein the control component is electrically connected to the first drive component and the second drive component respectively; The screen component includes an upward state and a downward state. When the screen component is in the upward state, the first driving component is in the working state and the second driving component is in the non-working state. When the screen component is in the downward state, the second driving component is in the working state and the first driving component is in the non-working state.

2. The display device according to claim 1, characterized in that, The screen assembly includes a screen body and connectors and fasteners respectively disposed on both sides of the screen body; part of the screen body is connected to the first support member through the connectors and is limited and fixed by the fasteners; part of the screen body is fixed and limited to the second support member by the fasteners.

3. The display device according to claim 2, characterized in that, The first driving component includes a first driving device and a first slider; the second driving component includes a second driving device and a second slider; the first driving device and the second driving device respectively drive the first slider and the second slider to move; the first slider is connected to the first support member; the second slider is connected to one end of the screen body.

4. The display device according to claim 3, characterized in that, One end of the screen body is provided with a threaded structure, and the second slider is provided with a threaded structure that mates with one end of the screen body. One end of the screen body and the second slider are connected by a threaded connection.

5. The display device according to claim 3, characterized in that, The first driving device and the second driving device are servo motors and screws or reels or cylinders.

6. The display device according to claim 2, characterized in that, The screen body includes an AMOLED screen body; the connector includes adhesive tape; and the fastener includes a pressure strip.

7. The display device according to claim 1, characterized in that, The first driving component and a portion of the screen components are respectively disposed on opposite sides of the first support member; the second driving component and a portion of the screen components are both disposed on the same side of the second support member.

8. The display device according to claim 1, characterized in that, The first support member includes a first support plate, and the second support member includes a second support plate. The first support plate and the second support plate are connected and have an "L" shaped structure.

9. The display device according to claim 1, characterized in that, The control component includes a control module, a counting module, and a display module. The control module is used to control the first driving component and the second driving component respectively. The counting module is used to count the number of times the screen component moves and transmit the data to the display module. The display module is used to display the number of times the screen component moves.

10. A method for testing a display device, applied to the display device as described in any one of claims 1-9, characterized in that, include: The control component controls the first driving component to be in a working state, the first driving component drives the first support member to move upward, thereby causing the screen component to move upward, and the control component controls the second driving component to be in a non-working state; The control component controls the second driving component to be in a working state, the second driving component drives the screen component to descend, and the control component controls the first driving component to be in a non-working state. The control component is used to count the number of times the screen component moves during the process of the screen component moving up or down.

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