Display devices

Abstract

An embodiment of the present application provides a display device, including a flexible connecting screen and a first display screen and a second display screen respectively arranged at both ends of the flexible connecting screen; a fixing mechanism is provided on the backlight side of the display device, and the fixing mechanism is respectively connected to the first display screen, the second display screen and the flexible connecting screen; when the display device is in a folded state, the flexible connecting screen bends, and the fixing mechanism fixes the first display screen and the second display screen to maintain the bent state of the flexible connecting screen; when the display device is in an unfolded state, the flexible connecting screen, the first display screen and the second display screen are located in the same plane, and the fixing mechanism is used to support the flexible connecting screen, the first display screen and the second display screen to prevent the flexible connecting screen from bending. The display device provided in the embodiment of the present application cleverly utilizes the foldable characteristics of the flexible screen by using a flexible connecting screen at the folding position, is not prone to creases, and is conducive to improving the user experience.

Description

Technical Field

[0001] The present application belongs to the field of display technology, and in particular relates to a display device. Background Art

[0002] OLED (Organic Light-Emitting Diode) is a self-luminous display technology based on organic materials. Due to its excellent color reproduction, flexible and bendable properties, and thin design, it has become a core technology in the high-end display market. Foldable display technology, a key application area for OLED flexible displays, has developed rapidly in recent years. Foldable or stretchable OLED screens perfectly demonstrate OLED's flexibility and are already being used in products such as mobile phones and tablets.

[0003] Common foldable display products on the market all have hinges designed at the folding point. In actual use, problems such as delamination and bright lines may still occur, and dust entering the hinges and screen wrinkles may affect the user experience.

[0004] In summary, the current folding method of foldable display devices will produce creases at the folding point, affecting the user experience. Summary of the Invention

[0005] In view of this, an embodiment of the present application provides a display device to solve the technical problem that the folding method of the existing display device will produce creases at the folding point, affecting the user experience.

[0006] An embodiment of the present application provides a display device, comprising a flexible connected screen and a first display screen and a second display screen respectively provided at two ends of the flexible connected screen;

[0007] The display device has a light-emitting side and a backlight side, the backlight side is provided with a fixing mechanism, and the fixing mechanism is respectively connected to the first display screen, the second display screen and the flexible connection screen;

[0008] When the display device is in a folded state, the flexible connected screen is bent, and the angle between the first display screen and the second display screen is α, 0°≤α<180°, and the fixing mechanism fixes the first display screen and the second display screen to maintain the bent state of the flexible connected screen;

[0009] When the display device is in the unfolded state, the flexible connected screen, the first display screen and the second display screen are located in the same plane, and the fixing mechanism is used to support the flexible connected screen, the first display screen and the second display screen to prevent the flexible connected screen from bending.

[0010] In some embodiments, the flexible connection screen includes:

[0011] flexible display layer;

[0012] a flexible flat layer, provided on a side of the flexible display layer away from the light emitting side; and

[0013] a folding structure, provided on a side of the flexible flat layer away from the flexible display layer;

[0014] The folding structure is used to assist the flexible display layer in bending and maintain the bent state of the flexible display layer.

[0015] In some embodiments, the folding structure comprises:

[0016] a flexible base layer, one side of which is connected to the fixing mechanism;

[0017] The folded sheet layer is arranged along the first direction, and one end of the folded sheet layer is connected to the flexible base layer, and the other end of the folded sheet layer is connected to the flexible flat layer.

[0018] In some embodiments, the fixing mechanism comprises:

[0019] A support assembly is provided on the backlight side of the flexible connection screen;

[0020] a connecting assembly comprising a first telescopic rod and a second telescopic rod, wherein one end of the first telescopic rod is hingedly connected to the backlight side of the first display screen, and the other end of the first telescopic rod is hingedly connected to the support assembly; one end of the second telescopic rod is hingedly connected to the backlight side of the second display screen, and the other end of the second telescopic rod is hingedly connected to the support assembly; and

[0021] A limiting component is arranged at one end of the supporting component away from the flexible connection screen and is hingedly connected to the first telescopic rod and the second telescopic rod. The limiting component is used to assist the first telescopic rod and the second telescopic rod in supporting the first display screen and the second display screen when the display device is transformed from a folded state to an unfolded state, so that the first display screen and the second display screen are set at a preset angle.

[0022] In some embodiments, the limiting assembly includes:

[0023] a first sleeve, slidably mounted in the support assembly;

[0024] a first transmission rod, one end of the first transmission rod being connected to the first sleeve, and the other end of the first transmission rod being hingedly connected to the first telescopic rod;

[0025] a second transmission rod, one end of the second transmission rod being connected to the first sleeve, and the other end of the second transmission rod being hingedly connected to the second telescopic rod; and

[0026] A one-way air intake structure is provided inside the first sleeve and forms an air intake cavity on a side away from the flexible connection screen;

[0027] When the display device changes from a folded state to an unfolded state, the first telescopic rod and the second telescopic rod drive the first transmission rod and the second transmission rod, pulling the first sleeve toward the direction close to the flexible connection screen, and causing the air inlet cavity to inhale air to fix the position of the first sleeve.

[0028] In some embodiments, a first damping member is sleeved on one end of the first sleeve close to the support assembly.

[0029] In some embodiments, a second damping member is sleeved on an end of the first sleeve away from the support assembly.

[0030] In some embodiments, the support assembly comprises:

[0031] A support head connected to the backlight side of the flexible connection screen;

[0032] a second sleeve, one end of which is connected to the support head, and the other end of which is connected to the first sleeve; and

[0033] a third sleeve, slidably mounted in the first sleeve and the second sleeve;

[0034] The second sleeve is provided with an air outlet, and the third sleeve is provided with an air pressure valve, through which at least part of the gas in the air inlet cavity is discharged through the air outlet.

[0035] In some embodiments, the limiting assembly further includes a control air intake structure provided on a side of the one-way air intake structure close to the flexible connection screen, the control air intake structure being used to control the pressure in the air intake cavity, and the control air intake structure including:

[0036] a first disc, disposed in the third sleeve and fixedly connected to the first sleeve, wherein the first disc is provided with a first air hole;

[0037] a second disc, disposed in the third sleeve and magnetically connected to the first disc, with a second air hole formed in the middle of the second disc;

[0038] a third disk, disposed on a side of the second disk away from the first disk; and

[0039] a telescopic shaft, with an air guide hole provided at the center, one end of the telescopic shaft being connected to the second disc, and the other end of the telescopic shaft being connected to the third disc;

[0040] The first air hole and the second air hole are selectively connected, and the air guide hole is connected to the second air hole and the air inlet cavity.

[0041] In some embodiments, the support assembly also includes a retractable support leg provided at one end of the third sleeve away from the flexible connection screen, the retractable support leg having an air chamber connected to the third sleeve, and part of the gas enters the air chamber through the controlled air intake structure to enable the retractable support leg to extend radially along the third sleeve.

[0042] In some embodiments, a first supporting heat-conducting layer is provided on the backlight side of the first display screen, the first supporting heat-conducting layer is connected to the fixing mechanism, and the first supporting heat-conducting layer is used to dissipate heat generated by the first display screen.

[0043] In some embodiments, a second supporting heat-conducting layer is provided on the backlight side of the second display screen, the second supporting heat-conducting layer is connected to the fixing mechanism, and the second supporting heat-conducting layer is used to dissipate heat generated by the second display screen.

[0044] In some embodiments, a camera module is provided on the backlight side of the first display screen, and a protective component is provided on the backlight side of the second display screen. When the display device is in a folded state, the protective component is used for the camera module to be embedded to protect the camera module.

[0045] In some embodiments, the first display screen is one of a rigid display screen and a flexible display screen;

[0046] The second display screen is one of a rigid display screen and a flexible display screen.

[0047] The display device provided in the embodiment of the present application cleverly utilizes the foldable feature of the flexible screen by using a flexible connecting screen at the folding portion and providing rigid display screens (a first display screen and a second display screen) at both ends of the flexible connecting screen. Compared with the prior art method of providing a hinge at the folding portion, the display device provided in the embodiment of the present application is less likely to produce creases. In addition, the flexible connecting screen can be maintained in a bent state or an unfolded state by a fixing mechanism, so that the entire display device can present the angle required by the user, which can be fully folded, fully unfolded, or in between these two states (the angle between the first display screen and the second display screen is (0-180°). This can further facilitate the user's use and help improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0049] Figure 1 This is a schematic diagram of the structure of the display device provided in the embodiment of the present application. Figure 1 ;

[0050] Figure 2 This is a schematic diagram of the structure of the display device provided in the embodiment of the present application. Figure 2 ;

[0051] Figure 3 This is a schematic diagram of the structure of the display device provided in the embodiment of the present application. Figure 3 ;

[0052] Figure 4 This is a schematic diagram of the structure of the display device provided in the embodiment of the present application. Figure 4 ;

[0053] Figure 5 yes Figure 4 Enlarged view of point A in the middle;

[0054] Figure 6 yes Figure 4 Enlarged view of point B in the middle;

[0055] Figure 7 is a structural diagram of a fixing structure in a display device provided in an embodiment of the present application;

[0056] Figure 8 yes Figure 7 Enlarged view of point C in the middle.

[0057] Among them, the figure numbers are:

[0058] 10. Flexible connection screen; 11. Flexible display layer; 12. Flexible flat layer; 13. Folding structure; 131. Flexible base layer; 132. Folding sheet layer;

[0059] 20. First display screen; 200. First supporting heat-conducting layer; 21. Camera module;

[0060] 30. Second display screen; 300. Second supporting heat-conducting layer; 31. Protective component;

[0061] 40. Fixing mechanism; 41. Support assembly; 411. Support head; 4111. Buffer layer; 412. Second sleeve; 4120. Air outlet; 413. Third sleeve; 4130. Ventilation pipe; 4131. First section; 4132. Second section; 4133. Air pressure valve; 414. Retractable support leg; 4140. Air chamber; 42. Connecting assembly; 421. First telescopic rod; 422. Second telescopic rod; 43. Limiting assembly; 431. First sleeve; 43 11. Toggle block; 432. First transmission rod; 433. Second transmission rod; 434. One-way air intake structure; 4340. Air intake chamber; 435. First damping member; 436. Second damping member; 437. Air intake control structure; 4371. First disc; 4372. Second disc; 4373. Third disc; 4374. Telescopic shaft; 4375. Magnetic member; 4376. Return spring; 400. First air hole; 401. Second air hole; 402. Air guide hole. DETAILED DESCRIPTION

[0062] In the following description, specific details such as specific system structures and technologies are provided for illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the embodiments of the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the embodiments of the present application.

[0063] It should also be understood that the term "and / or" used in the description of the embodiments of the present application and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0064] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0065] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0066] In addition, in the description of the embodiments of the present application and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0067] References to "some embodiments" or "some embodiments" described in the specification of the embodiments of the present application mean that one or more embodiments of the embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways. "Multiple" refers to two or more.

[0068] The present application provides a display device, such as Figure 1 and Figure 2 As shown, the display device includes a flexible connection screen 10, a first display screen 20 and a second display screen 30, and the first display screen 20 and the second display screen 30 are respectively connected to the two ends of the flexible connection screen 10;

[0069] The display device has a light emitting side and a backlight side, and the backlight side of the display device is provided with a fixing mechanism 40, which is respectively connected to the first display screen 20, the second display screen 30 and the flexible connection screen 10;

[0070] like Figure 1 As shown, when the display device is in the folded state, the flexible connected screen 10 is bent, and the angle between the first display screen 20 and the second display screen 30 is α, 0°≤α<180°, and the fixing mechanism 40 fixes the first display screen 20 and the second display screen 30 to maintain the bent state of the flexible connected screen 10;

[0071] like Figure 2 As shown, when the display device is in the unfolded state, the flexible connected screen 10, the first display screen 20 and the second display screen 30 are located in the same plane, and the fixing mechanism 40 is used to support the flexible connected screen 10, the first display screen 20 and the second display screen 30 to prevent the flexible connected screen 10 from bending.

[0072] The display device provided in the embodiment of the present application cleverly utilizes the foldable characteristics of the flexible screen by using a flexible connecting screen 10 at the folding position and arranging rigid display screens (a first display screen 20 and a second display screen 30) at both ends of the flexible connecting screen 10. Compared with the prior art in which a hinge is arranged at the folding position, the display device provided in the embodiment of the present application is not prone to creases. In addition, the flexible connecting screen 10 can be maintained in a bent state or an unfolded state through the fixing mechanism 40, so that the entire display device can present the angle required by the user. It can be fully folded, that is, the angle α between the first display screen 20 and the second display screen 30 is 0°, or it can be fully unfolded, that is, the angle α between the first display screen 20 and the second display screen 30 is 180°, or it can be between these two states, that is, the angle α between the first display screen 20 and the second display screen 30 is between 0° and 180°. This can further facilitate the use of the user and help improve the user experience.

[0073] In the application, the first display and the second display are either rigid displays or flexible displays. Rigid displays usually use rigid substrates such as glass or metal, and are structurally stable and cannot be bent. Types include LCD, LED, and OLED. Flexible displays use flexible substrates such as polymers, which support bending, folding, and even curling. Types include AMOLED (Active-Matrix Organic Light-Emitting Diode) flexible screens, flexible LEDs, and electronic paper.

[0074] In application, the entire display device is an OLED (Organic Light-Emitting Diode) display screen, meaning that the first display screen 20, the second display screen 30, and the flexible connecting screen 10 all utilize OLED displays. OLED utilizes self-luminous technology, eliminating the need for a backlight; each pixel emits light independently, allowing for thinner (even flexible) screens while reducing hardware complexity and power consumption. By eliminating the backlight module and liquid crystal layer, the thickness can be reduced to less than 1mm, making the device more portable (such as an ultra-thin TV or mobile phone). In other embodiments, to save costs, the first display screen 20 and the second display screen 30 may utilize either a liquid crystal display or an LED display screen. The first display screen 20 and the second display screen 30 may simultaneously utilize one of these: an OLED display screen, an LED display screen, and an LCD display screen. Alternatively, the first display screen 20 and the second display screen 30 may individually utilize one of these: an OLED display screen, an LED display screen, and an LCD display screen.

[0075] The flexible connection screen 10 is an OLED flexible screen. The OLED flexible screen has no glass substrate. The flexible OLED uses a plastic substrate (such as polyimide PI) instead of traditional glass, which can be bent repeatedly without breaking. Current technology can achieve a folding radius of 1-3mm, making the device more compact. When unfolded, it is a tablet, and when folded, it is a mobile phone. In the existing technology, a hinge structure is usually used to achieve free transformation of the screen shape (such as inward folding, outward folding, double folding, and curling). However, although it takes into account both the large-screen experience and portability, creases will be generated. The display device provided in the embodiment of the present application achieves folding fixation through the flexible connection screen 10 and a fixed structure arranged on the backlight side of the flexible connection screen 10. It can complete closed-loop cycle functions such as folding-fixing-resetting, and is not prone to creases, which greatly improves the user experience.

[0076] In some embodiments, as Figure 2 and Figure 3 As shown, the flexible connected screen 10 includes a flexible display layer 11, a flexible flat layer 12 and a folding structure 13;

[0077] The flexible flat layer 12 is provided on a side of the flexible display layer 11 away from the light emitting side;

[0078] The folding structure 13 is provided on a side of the flexible flat layer 12 away from the flexible display layer 11;

[0079] The folding structure 13 is used to assist the flexible display layer 11 in bending and maintain the bent state of the flexible display layer 11 .

[0080] In this way, the folding structure 13 assists the flexible display layer 11 in folding, thereby realizing the folding and unfolding of the entire display device. Compared with the hinge connection used in the prior art, the folding structure 13 in the embodiment of the present application is not easy to cause creases in the flexible display layer 11, which is conducive to improving the user experience.

[0081] In applications, the flexible display layer 11 is a flexible OLED layer. The flexible flat layer 12 is any one of polyimide, acrylic resin, epoxy resin, silicone material, photosensitive polyimide, etc. Polyimide has high heat resistance (can withstand temperatures above 300°C, suitable for TFT processes), excellent mechanical strength and flexibility (can be bent hundreds of thousands of times). Acrylic resin is low-cost and easy to apply (via spin coating or inkjet printing). Epoxy resin has high hardness and chemical resistance, making it suitable for a protective layer. Silicone materials have good elasticity and resistance to stress cracking (suitable for multiple folding). Photosensitive polyimide combines the heat resistance of polyimide with compatibility with photolithography processes and can be directly patterned.

[0082] In some embodiments, as Figure 2 and Figure 3 As shown, the folding structure 13 includes a flexible base layer 131 and a folding sheet layer 132;

[0083] One side of the flexible base layer 131 is connected to the fixing mechanism 40;

[0084] The folded sheet layer 132 is arranged along the first direction, and one end of the folded sheet layer 132 is connected to the flexible base layer 131 , and the other end of the folded sheet layer 132 is connected to the flexible flat layer 12 .

[0085] When the flexible display layer 11 bends, the flexible base layer 131 folds accordingly. At this time, the end of the folding layer 132 away from the flexible display layer 11 is compressed, thereby cooperating with the flexible display layer 11 to achieve smooth folding and avoid creases. When unfolded, the folding layer 132 returns to its original shape.

[0086] In practice, the flexible base layer 131 is a flexible material layer, and its specific material can be the same as that of the flexible flat layer 12. Similarly, the folding sheet layer 132 can also be made of the same material as the flexible flat layer 12. This ensures flexibility and a certain degree of elasticity, allowing it to switch back and forth between folded and unfolded states without causing creases at the folds.

[0087] It should be noted that the first direction is the length or width direction of the display device, that is, the X direction in the figure, and the second direction is the thickness direction of the display device, that is, the Y direction in the figure.

[0088] In application, when the display device is in the folded state, the flexible connected screen 10 is bent, and the angle between the first display screen 20 and the second display screen 30 is α, 0°≤α<180°, and the fixing mechanism 40 fixes the first display screen 20 and the second display screen 30 to maintain the bent state of the flexible connected screen 10. The sizes of the first display screen 20 and the second display screen 30 can be the same or different. Figure 1 As shown, when the angle between the first display screen 20 and the second display screen 30 is 0°, the first display screen 20 and the second display screen 30 are in a completely folded state, and in the second direction, the first display screen 20 and the second display screen 30 at least partially overlap.

[0089] In applications, such as Figure 2 As shown, when the display device is in the unfolded state, the flexible connected screen 10, the first display screen 20, and the second display screen 30 are located in the same plane. The fixing mechanism 40 is used to support the flexible connected screen 10, the first display screen 20, and the second display screen 30 to prevent the flexible connected screen 10 from bending. At this time, the angle between the first display screen 20 and the second display screen 30 is 180°, and the first display screen 20, the second display screen 30, and the flexible connected screen 10 are in the same plane. At this time, the flexible connected screen does not bend.

[0090] In some embodiments, as Figure 4As shown, the fixing mechanism 40 includes a supporting component 41, a connecting component 42 and a limiting component 43;

[0091] The support assembly 41 is provided on the backlight side of the flexible connection screen 10;

[0092] The connecting assembly 42 includes a first telescopic rod 421 and a second telescopic rod 422. One end of the first telescopic rod 421 is hingedly connected to the backlight side of the first display screen 20, and the other end of the first telescopic rod 421 is hingedly connected to the support assembly 41. One end of the second telescopic rod 422 is hingedly connected to the backlight side of the second display screen 30, and the other end of the second telescopic rod 422 is connected to the support assembly 41.

[0093] The limiting component 43 is arranged at the end of the supporting component 41 away from the flexible connecting screen 10, and is hingedly connected to the first telescopic rod 421 and the second telescopic rod 422. The limiting component 43 is used to assist the first telescopic rod 421 and the second telescopic rod 422 to support the first display screen 20 and the second display screen 30 when the display device is transformed from a folded state to an unfolded state, so that the first display screen 20 and the second display screen 30 are set at a preset angle.

[0094] It should be noted that the preset angle refers to the angle α between the first display 20 and the second display 30, which ranges from 0° to 180°, inclusive. This setting allows users to freely select the desired angle, not just the fully folded or fully unfolded state, thereby enhancing the user experience and fun.

[0095] In some embodiments, as Figure 5 As shown, the limiting assembly 43 includes a first sleeve 431, a first transmission rod 432, a second transmission rod 433 and a one-way air intake structure 434;

[0096] The first sleeve 431 is slidably installed in the support assembly 41;

[0097] One end of the first transmission rod 432 is connected to the first sleeve 431 , and the other end of the first transmission rod 432 is hingedly connected to the first telescopic rod 421 ;

[0098] One end of the second transmission rod 433 is connected to the first sleeve 431, and the other end of the second transmission rod 433 is hingedly connected to the second telescopic rod 422;

[0099] The one-way air intake structure 434 is provided inside the first sleeve 431 and forms an air intake cavity 4340 on a side away from the flexible connection screen 10;

[0100] When the display device changes from a folded state to an unfolded state, the first telescopic rod 421 and the second telescopic rod 422 drive the first transmission rod 432 and the second transmission rod 433, pulling the first sleeve 431 toward the direction close to the flexible connection screen 10, and allowing the air inlet cavity 4340 to inhale to fix the position of the first sleeve 431.

[0101] In use, whether the display device is transformed from a folded state to an unfolded state or from an unfolded state to a folded state, an external force is required. Taking the display device as a foldable mobile phone or a foldable tablet as an example, the first display screen 20 and the second display screen 30 are directly bent by hand to bend the flexible connecting screen 10 connecting the first display screen 20 and the second display screen 30. Specifically, the external force is transmitted to the first transmission rod 432 and the second transmission rod 433 through the first telescopic rod 421 and the second telescopic rod 422, thereby driving the first sleeve 431 to move in the first direction toward the side close to the flexible connecting screen 10. At the same time, the air intake chamber 4340 of the one-way air intake structure 434 generates negative pressure and draws air from the outside to fix the position of the first sleeve 431, thereby supporting and fixing the first display screen 20 and the second display screen 30. The one-way air intake structure 434 is a one-way valve, and the one-way valve and the inner wall of the support assembly 41 form an air intake chamber 4340. The one-way valve is also filled with an incompressible inert gas.

[0102] In some embodiments, as Figure 5 As shown, the end of the first sleeve 431 proximal to the support assembly 41 is provided with a first damping member 435. In other embodiments, the end of the first sleeve 431 distal to the support assembly 41 is provided with a second damping member 436. In other embodiments, the end of the first sleeve 431 proximal to the support assembly 41 is provided with the first damping member 435, and the end of the first sleeve 431 distal to the support assembly 41 is provided with the second damping member 436. The presence of the first damping member 435 and the second damping member 436 prevents the first sleeve 431 from moving too quickly when the first and second display screens 20 and 30 are pried apart, maintaining stable movement and thus protecting the display device. Furthermore, the presence of the second damping member 436 can also position the first sleeve 431. Specifically, when the display device transitions from a folded state to an unfolded state, the second damping member 436 first deforms. When transitioning from the unfolded state to the folded state, the second damping member 436 returns to its original position, thereby positioning the first sleeve 431. In application, the first damping member 435 is a force damping rubber tube, and the second damping member 436 is a compressible reset rubber tube.

[0103] In some embodiments, as Figure 6 As shown, the support assembly 41 includes a support head 411, a second sleeve 412 and a third sleeve 413;

[0104] The support head 411 is connected to the backlight side of the flexible connection screen 10;

[0105] One end of the second sleeve 412 is connected to the support head 411 , and the other end of the second sleeve 412 is connected to the first sleeve 431 ;

[0106] The third sleeve 413 is slidably installed in the first sleeve 431 and the second sleeve 412;

[0107] The second sleeve 412 is provided with an air outlet 4120, and the third sleeve 413 is provided with an air pressure valve 4133. The air pressure valve 4133 discharges at least part of the air in the air inlet cavity 4340 through the air outlet 4120. This helps to stabilize the air pressure in the air inlet cavity 4340 in the one-way air inlet structure 434, thereby stably supporting the position of the first sleeve 431.

[0108] In applications, such as Figure 3 and Figure 6 As shown, a buffer layer 4111 is provided on the side of the support head 411 close to the flexible connection screen 10. Since the support head 411 is in direct contact with the flexible connection screen 10, when the display device changes from a folded state to an unfolded state, the support head 411 will apply a supporting force to the flexible connection screen 10. In order to prevent the support head 411 from damaging the flexible connection screen 10, a buffer layer 4111 is added to the support head 411 to buffer the force of the support head 411 on the flexible connection screen 10. In addition, in order to further reduce the force of the support head 411 on the flexible connection screen 10, the contact surface between the support head 411 and the flexible connection screen 10 can be made into a curved surface, that is, the support head 411 can be made into a hemispherical shape. The material of the buffer layer 4111 is a highly elastic material, including but not limited to natural rubber, silicone rubber, polyurethane rubber, etc.

[0109] In use, one end of the second sleeve 412 is connected to the support head 411, and the other end of the second sleeve 412 is connected to the first sleeve 431. The third sleeve 413 is slidably installed in the first sleeve 431 and the second sleeve 412. Specifically, the first sleeve 431 is sleeved outside the third sleeve 413, and the second sleeve 412 is sleeved outside the first sleeve 431. The third sleeve 413 can slide inside the first sleeve 431 and the second sleeve 412, and the first sleeve 431 can slide inside the first sleeve 431. Among them, the material of the first sleeve 431, the second sleeve 412, and the third sleeve 413 is magnetic metal. In order to further fix the position of the first sleeve 431 (thereby stably supporting the first display screen 20 and the second display screen 30 through the first telescopic rod 421 and the second telescopic rod 422), a strong rubidium magnet coating can be provided on the inner wall of the second sleeve 412. When the first sleeve 431 is moved to the corresponding position, the first sleeve 431 and the strong rubidium magnet coating on the second sleeve 412 are magnetically matched, thereby further fixing the position of the first sleeve 431. Furthermore, a strong rubidium pole or a strong rubidium magnet is provided at one end of the third sleeve 413 close to the second sleeve 412, and on the inner wall of the second sleeve 412. When the third sleeve 413 is moved to the corresponding position, it is fixed to the second sleeve 412, thereby achieving stable support for the first sleeve 431. Since the first sleeve 431 and the third sleeve 413 are movable and the second sleeve 412 is fixed, the first display screen 20 and the second display screen 30 of the display device can be fixed when in the unfolded state by strengthening the fixation of the first sleeve 431 and the third sleeve 413 to the second sleeve 412 respectively.

[0110] In some embodiments, as Figure 6 As shown, the third sleeve 413 includes a first section 4131 and a second section 4132. The first section 4131 is located on the side closest to the flexible connected screen 10, while the second section 4132 is located away from the flexible connected screen 10. The first section 4131 slides within the second sleeve 412, and the second section 4132 slides within the first sleeve 431 and the second sleeve 412. The inner diameter of the first section 4131 is larger than that of the second section 4132, and the inner diameter of the second sleeve 412 is larger than that of the first sleeve 431, allowing the first sleeve 431 to slide within the second sleeve 412. The third sleeve 413 moves toward the flexible connected screen 10 until its sidewall blocks the air outlet 4120 in the second sleeve 412. At this point, the air pressure valve 4133 within the third sleeve 413 closes, maintaining the positions of the third sleeve 413 and the first sleeve 431, thereby providing stable support for the first and second display screens 20 and 30. Generally speaking, when the third sleeve 413 covers the air outlet 4120 of the second sleeve 412 , the entire display device is in a fully unfolded state.

[0111] In some embodiments, as Figure 7 As shown, the limiting assembly 43 also includes a control air intake structure 437 provided on the side of the one-way air intake structure 434 close to the flexible connection screen 10. The control air intake structure 437 is used to control the pressure in the air intake cavity 4340. Since the supporting force of the first display screen 20 and the second display screen 30 is different at different angles, when an external force is applied to pry the first display screen 20 and the second display screen 30 apart, the pressure generated by the gas sucked into the air intake cavity 4340 through the one-way valve may be relatively high. To maintain balance, the pressure in the air intake cavity 4340 needs to be released appropriately. Therefore, the control air intake structure 437 can timely discharge part of the gas in the air intake cavity 4340, thereby maintaining the stable support of the first display screen 20 and the second display screen 30 by the entire limiting assembly 43.

[0112] In some embodiments, as Figure 7 and Figure 8 As shown, the air intake control structure 437 includes a first disc 4371 , a second disc 4372 , a third disc 4373 and a telescopic shaft 4374 ;

[0113] The first disc 4371 is fixedly connected to the first sleeve 431 , and the first disc 4371 is provided with a first air hole 400 ;

[0114] The second disc 4372 is magnetically connected to the first disc 4371 , and a second air hole 401 is opened in the middle of the second disc 4372 ;

[0115] The third disk 4373 is disposed on a side of the second disk 4372 away from the first disk 4371 ;

[0116] An air guide hole 402 is provided at the center of the telescopic shaft 4374. One end of the telescopic shaft 4374 is connected to the second disc 4372, and the other end of the telescopic shaft 4374 is connected to the third disc 4373.

[0117] The first air hole 400 and the second air hole 401 are selectively connected, and the air guide hole 402 is connected to the second air hole 401 and the air inlet cavity 4340 .

[0118] It should be noted that the selective communication between the first pore 400 and the second pore 401 means that the first pore 400 and the second pore 401 may be connected or not connected, and may be connected as needed.

[0119] In application, the first disk 4371 is magnetically connected to the second disk 4372. A magnetic component 4375 may be provided between the first disk 4371 and the second disk 4372. The magnetic component 4375 is a strong rubidium magnet, which fixes the first disk 4371 and the second disk 4372. The strong rubidium magnet blocks the first air hole 400 of the first disk 4371. At this time, the first air hole 400 and the second air hole 401 are not connected to each other. When the first air hole 400 and the second air hole 401 need to be connected, it is only necessary to separate the first disk 4371 and the second disk 4372 to create a gap between the strong rubidium magnet and the first disk 4371. At this time, the gas in the air inlet chamber 4340 can enter the first air hole 400 of the first disk 4371 through the air guide hole 402 of the telescopic shaft 4374, and enter the second air hole 401 through the gap, and then be discharged outward.

[0120] In some embodiments, as Figure 8 As shown, the first disc 4371 is connected to the first sleeve 431, and the circumferential side of the first sleeve 431 is provided with connecting ends respectively connected to the first transmission rod 432 and the second transmission rod 433. When the display device is transformed from the folded state to the unfolded state, the first display screen 20 and the second display screen 30 are moved, and the movement of the first sleeve 431 simultaneously drives the first disc 4371, the second disc 4372 and the third disc 4373 to move toward the flexible connection screen 10 (at this time, the first disc 4371 and the second disc 4372 are magnetically fixed), thereby generating negative pressure in the air inlet chamber 4340, and then sucking in air through the one-way valve to support the position of the first sleeve 431 and fix the first display screen 20 and the second display screen 30. Furthermore, when the gas in the air inlet cavity 4340 needs to be discharged, the first disc 4371 and the second disc 4372 are separated so that the gas can pass through the first air hole 400 and the second air hole 401 and then discharge to the air outlet 4120 of the second sleeve 412 .

[0121] In applications, such as Figure 8As shown, to facilitate the separation of the magnetic connection between the first disc 4371 and the second disc 4372, a toggle block 4311 is provided on the outside of the first sleeve 431, and the toggle block 4311 is fixedly connected to the second disc 4372. When it is necessary to separate the first disc 4371 and the second disc 4372, it is only necessary to apply a force to the toggle block 4311 in the opposite direction of the movement of the first sleeve 431. In addition, the second disc 4372 is connected to the third disc 4373 via a return spring 4376. This facilitates the movement of the second disc 4372 without accelerating the exhaust speed of the air inlet chamber 4340. The air inlet chamber 4340 described above is formed between the third disc 4373 and the one-way valve, and the presence of the return spring 4376 also prevents the third disc 4373 from being pressed down when the second disc 4372 moves. At the same time, when the first disc 4371 and the second disc 4372 need to be magnetically connected, the return spring 4376 can also provide a rebound force to facilitate the tightness of the connection between the first disc 4371 and the second disc 4372, thereby ensuring the pressure stability of the air inlet chamber 4340.

[0122] In some embodiments, as Figure 8 As shown, the support assembly 41 further includes a retractable support leg 414 disposed at an end of the third sleeve 413 away from the flexible connection screen 10. The retractable support leg 414 has an air chamber 4140 in communication with the third sleeve 413. By controlling the deflating of the air intake structure 437, some gas enters the air chamber 4140, causing the retractable support leg 414 to extend radially along the third sleeve 413. Thus, the presence of the retractable support leg 414 not only makes it easier for users to take it in and out, but also improves the appearance.

[0123] In applications, such as Figure 8 As shown, a ventilation line 4130 is formed on the sidewall of the third sleeve 413, connecting the air chamber 4140 within the retractable leg 414 and the first air hole 400. Thus, when the retractable leg 414 needs to be expanded, the first disc 4371 and the second disc 4372 are separated, allowing the gas within the air inlet cavity 4340 to enter the air chamber 4140 through the air guide hole 402, the second air hole 401, the first air hole 400, and the ventilation line 4130, thereby expanding the leg to form a T-shaped structure.

[0124] In some embodiments, as Figure 2 and Figure 3 As shown, a first supporting heat-conducting layer 200 is provided on the backlight side of the first display screen 20. The first supporting heat-conducting layer 200 is connected to the fixing mechanism 40 and is used to dissipate the heat generated by the first display screen 20. Specifically, the first supporting heat-conducting layer 200 is hingedly connected to the first telescopic rod 421. In some embodiments, as Figure 2 and Figure 3As shown, a second supporting thermal conductive layer 300 is provided on the backlight side of the second display screen 30. The second supporting thermal conductive layer 300 is connected to the fixing mechanism 40 and is used to dissipate heat generated by the second display screen 30. Specifically, the second supporting thermal conductive layer 300 is hingedly connected to the second telescopic rod 422. In practice, the first and second supporting thermal conductive layers can be made of metals, composite materials, ceramic materials, thermally conductive engineering plastics, etc. Metallic materials include aluminum and aluminum alloys, magnesium alloys, copper and copper alloys, etc. Aluminum and aluminum alloys are lightweight, highly thermally conductive, moderately strong, and low-cost. They are widely used in LCD backplanes, TV bezels, LED backlight heat dissipation brackets, and other applications, such as aluminum heat sink fins or frames. Composite materials, including carbon fiber reinforced composites and metal matrix composites, are high-strength and lightweight, but have low native thermal conductivity. Thermal conductivity can be improved by adding fillers such as graphene and carbon nanotubes. Support frames for high-end display devices (such as e-sports monitors) require customized designs. Ceramic materials include aluminum nitride and beryllium oxide. Thermally conductive engineering plastics include modified polyimide or polycarbonate, which have good thermal conductivity, flexibility and light weight. Figure 1 and Figure 2 As shown, a camera module 21 is provided on the backlight side of the first display screen 20 , and a protective component 31 is provided on the backlight side of the second display screen 30 . When the display device is in a folded state, the protective component 31 is used for embedding the camera module 21 to protect the camera module 21 .

[0125] The working principle of the display device provided in the embodiment of the present application is as follows:

[0126] like Figures 1 to 8 As shown, when changing from the folded state to the unfolded state, an external force is applied to the first display screen 20 and the second display screen 30 to slowly unfold the flexible connected screen 10. At this time, the first telescopic rod 421 and the second telescopic rod 422 are stretched after being pulled by the force, driving the first transmission rod 432 and the second transmission rod 433 to transmit the force to the first sleeve 431. The first sleeve 431 is subjected to an upward force and moves toward the direction close to the flexible connected screen 10; the movement of the first sleeve 431 drives the first disc 4371, the second disc 4372 and the third disc 4373 to move upward, so that the air inlet chamber 4340 between the third disc 4373 and the one-way valve generates a negative pressure, thereby inhaling air to the outside through the one-way valve.

[0127] During the movement of the first sleeve 431, the air intake chamber 4340 continuously intakes air. When the corresponding angle needs to be maintained, the toggle block 4311 can be pulled downward to separate the first disc 4371 and the second disc 4372. Some of the air in the air intake chamber 4340 is then discharged to the outside through the air guide hole 402, the second air hole 401, the first air hole 400, and the air outlet 4120, thereby achieving balance. Meanwhile, during the intake of air into the air intake chamber 4340, the third sleeve 413 is subjected to pressure and will continue to move toward the flexible connected screen 10. When the first display screen 20 and the second display screen 30 are fully unfolded, the third sleeve 413 will block the air outlet 4120 on the second sleeve 412.

[0128] In order to make the entire display device look beautiful and convenient for users to take and put, the toggle block 4311 outside the second disk 4372 can be turned to separate the first disk 4371 and the second disk 4372. The gas in the air inlet cavity 4340 can enter the air chamber 4140 in the retractable support leg 414 through the air guide hole 402, the second air hole 401, the first air hole 400 and the ventilation pipe 4130, thereby expanding the retractable support leg 414.

[0129] In application, the display device provided in the embodiment of the present application can specifically be a foldable mobile phone, a foldable tablet or a large foldable display screen.

[0130] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0131] The above-described embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application are described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the embodiments of the present application, and should all be included in the protection scope of the embodiments of the present application.

Claims

1. A display device, characterized in that: It includes a flexible connecting screen and a first display screen and a second display screen respectively arranged at two ends of the flexible connecting screen; The display device has a light-emitting side and a backlight side, the backlight side is provided with a fixing mechanism, and the fixing mechanism is respectively connected to the first display screen, the second display screen and the flexible connection screen; When the display device is in a folded state, the flexible connected screen is bent, and the angle between the first display screen and the second display screen is α, 0°≤α<180°, and the fixing mechanism fixes the first display screen and the second display screen to maintain the bent state of the flexible connected screen; When the display device is in the unfolded state, the flexible connected screen, the first display screen, and the second display screen are located in the same plane, and the fixing mechanism is used to support the flexible connected screen, the first display screen, and the second display screen to prevent the flexible connected screen from bending; The fixing mechanism comprises: A support assembly is provided on the backlight side of the flexible connection screen; a connecting assembly comprising a first telescopic rod and a second telescopic rod, wherein one end of the first telescopic rod is hingedly connected to the backlight side of the first display screen, and the other end of the first telescopic rod is hingedly connected to the support assembly; one end of the second telescopic rod is hingedly connected to the backlight side of the second display screen, and the other end of the second telescopic rod is hingedly connected to the support assembly; and a limit assembly, disposed at an end of the support assembly away from the flexible connection screen and hingedly connected to the first telescopic rod and the second telescopic rod, the limit assembly being configured to assist the first telescopic rod and the second telescopic rod in supporting the first display screen and the second display screen when the display device transitions from a folded state to an unfolded state, so that the first display screen and the second display screen are arranged at a preset angle; The limiting component includes: a first sleeve, slidably mounted in the support assembly; a first transmission rod, one end of the first transmission rod being connected to the first sleeve, and the other end of the first transmission rod being hingedly connected to the first telescopic rod; a second transmission rod, one end of the second transmission rod being connected to the first sleeve, and the other end of the second transmission rod being hingedly connected to the second telescopic rod; and A one-way air intake structure is provided inside the first sleeve and forms an air intake cavity on a side away from the flexible connection screen; When the display device changes from a folded state to an unfolded state, the first telescopic rod and the second telescopic rod drive the first transmission rod and the second transmission rod to pull the first sleeve toward the flexible connection screen, and the air inlet cavity is inhaled to fix the position of the first sleeve; The limiting assembly further includes an air intake control structure provided on a side of the one-way air intake structure close to the flexible connection screen, and the air intake control structure is used to control the pressure in the air intake cavity.

2. The display device according to claim 1, wherein The flexible connection screen includes: flexible display layer; a flexible flat layer, provided on a side of the flexible display layer away from the light emitting side; and a folding structure, provided on a side of the flexible flat layer away from the flexible display layer; The folding structure is used to assist the flexible display layer in bending and maintain the bent state of the flexible display layer.

3. The display device according to claim 2, wherein The folding structure comprises: a flexible base layer, one side of which is connected to the fixing mechanism; The folded sheet layer is arranged along the first direction, and one end of the folded sheet layer is connected to the flexible base layer, and the other end of the folded sheet layer is connected to the flexible flat layer.

4. The display device according to claim 1, wherein A first damping member is sleeved on one end of the first sleeve close to the support assembly; And / or, a second damping member is sleeved on one end of the first sleeve away from the support assembly; And / or, the support assembly includes: A support head connected to the backlight side of the flexible connection screen; a second sleeve, one end of which is connected to the support head, and the other end of which is connected to the first sleeve; and a third sleeve, slidably mounted in the first sleeve and the second sleeve; The second sleeve is provided with an air outlet, and the third sleeve is provided with an air pressure valve, through which at least part of the gas in the air inlet cavity is discharged through the air outlet.

5. The display device according to claim 4, wherein The air intake control structure includes: a first disc, disposed in the third sleeve and fixedly connected to the first sleeve, wherein the first disc is provided with a first air hole; a second disc, disposed in the third sleeve and magnetically connected to the first disc, with a second air hole formed in the middle of the second disc; a third disk, disposed on a side of the second disk away from the first disk; and a telescopic shaft, with an air guide hole provided at the center, one end of the telescopic shaft being connected to the second disc, and the other end of the telescopic shaft being connected to the third disc; The first air hole and the second air hole are selectively connected, and the air guide hole is connected to the second air hole and the air inlet cavity.

6. The display device according to claim 5, wherein The support assembly also includes a retractable support leg provided at one end of the third sleeve away from the flexible connection screen. The retractable support leg has an air chamber connected to the third sleeve. Through the controlled air intake structure, air is deflated and part of the gas enters the air chamber to enable the retractable support leg to extend radially along the third sleeve.

7. The display device according to claim 1, wherein A first supporting heat-conducting layer is provided on the backlight side of the first display screen, the first supporting heat-conducting layer is connected to the fixing mechanism, and the first supporting heat-conducting layer is used to dissipate heat generated by the first display screen; And / or, a second supporting heat-conducting layer is provided on the backlight side of the second display screen, the second supporting heat-conducting layer is connected to the fixing mechanism, and the second supporting heat-conducting layer is used to dissipate heat generated by the second display screen.

8. The display device according to any one of claims 1 to 7, wherein: A camera module is provided on the backlight side of the first display screen, and a protection component is provided on the backlight side of the second display screen. When the display device is in a folded state, the protection component is used for the camera module to be embedded therein to protect the camera module. And / or, the first display screen is one of a rigid display screen and a flexible display screen; The second display screen is one of a rigid display screen and a flexible display screen.

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