Display device

Abstract

The embodiment of the invention provides display equipment. The display equipment comprises a flexible connection screen, a first display screen and a second display screen, wherein the first display screen and the second display screen are arranged at the two ends of the flexible connection screen respectively; the backlight side of the display device is provided with a fixing mechanism, and the fixing mechanism is connected with the first display screen, the second display screen and the flexible connection screen. When the display equipment is in a folded state, the flexible connection screen is bent, and the fixing mechanism fixes the first display screen and the second display screen so as to keep the bent state of the flexible connection screen; when the display device is in an unfolded state, the flexible connection screen, the first display screen and the second display screen are located on the same plane, and the fixing mechanism is used for supporting the flexible connection screen, the first display screen and the second display screen so as to prevent the flexible connection screen from being bent. According to the display device provided by the embodiment of the invention, the flexible connecting screen is used at the folding position, the foldable characteristic of the flexible screen is ingeniously applied, creases are not prone to being generated, and the use experience feeling is improved.

Description

Technical Field

[0001] This application belongs to the field of display technology, and particularly 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 performance, flexible and bendable characteristics, and thin design, it has become one of the core technologies in the high-end display market. As an important application direction of OLED flexible display, the foldable display technology has developed rapidly in recent years. Among them, the folded or stretched OLED screen perfectly embodies the flexible characteristics of OLED and has been used in products such as mobile phones and tablets.

[0003] Common foldable display products on the market are designed with hinges at the folding part. In actual use, problems such as delamination and bright lines may still occur, as well as hinge dust ingress and screen wrinkles, which affect the user experience.

[0004] In summary, the folding method of the current foldable display device will generate creases at the folding part, affecting the user experience. Summary of the Invention

[0005] In view of this, the embodiments of this application provide a display device to solve the technical problem that the folding method of the existing display device will generate creases at the folding part, affecting the user experience.

[0006] The embodiments of this application provide a display device, including a flexible connection screen and a first display screen and a second display screen respectively arranged at both ends of the flexible connection screen; The display device has a light-emitting side and a backlight side. A fixing mechanism is arranged on the backlight side, 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 connection screen is bent, and the included angle between the first display screen and the second display screen is α, 0° ≤ α < 180°. The fixing mechanism fixes the first display screen and the second display screen to maintain the bent state of the flexible connection screen; When the display device is in an unfolded state, the flexible connection screen, the first display screen, and the second display screen are located on the same plane. The fixing mechanism is used to support the flexible connection screen, the first display screen, and the second display screen to prevent the flexible connection screen from being bent.

[0007] In some embodiments, the flexible connection screen includes: A flexible display layer; A flexible flat layer is disposed on a side of the flexible display layer away from the light-emitting side; and A folding structure is disposed on a side of the flexible flat layer away from the flexible display layer; The folding structure is configured to assist the flexible display layer in bending and maintain the bent state of the flexible display layer.

[0008] In some embodiments, the folding structure includes: A flexible substrate layer, with one side connected to the fixing mechanism; Folding sheet layers are arranged along a first direction, and one end of the folding sheet layers is connected to the flexible substrate layer, and the other end of the folding sheet layers is connected to the flexible flat layer.

[0009] In some embodiments, the fixing mechanism includes: A support assembly is disposed on the backlight side of the flexible connection screen; A connection assembly includes a first telescopic rod and a second telescopic rod. One end of the first telescopic rod is hingedly connected to the backlight side of the first display screen, 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 limiting assembly is disposed at an end of the support assembly away from the flexible connection screen and is hingedly connected to the first telescopic rod and the second telescopic rod. The limiting assembly is 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 disposed at a preset angle.

[0010] In some embodiments, the limiting assembly includes: A first sleeve is slidably mounted in the support assembly; A first transmission rod, with one end of the first transmission rod connected to the first sleeve and the other end of the first transmission rod hingedly connected to the first telescopic rod; A second transmission rod, with one end of the second transmission rod connected to the first sleeve and the other end of the second transmission rod hingedly connected to the second telescopic rod; and A one-way air intake structure is disposed inside the first sleeve, and an air intake cavity is formed on a side away from the flexible connection screen; When the display device transitions 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, pull the first sleeve to move towards the direction close to the flexible connection screen, and cause the air intake cavity to inhale air to fix the position of the first sleeve.

[0011] In some embodiments, a first damping member is sleeved on one end of the first sleeve close to the support assembly.

[0012] In some embodiments, a second damping member is sleeved on one end of the first sleeve away from the support assembly.

[0013] In some embodiments, 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 the second sleeve is connected to the first sleeve; and A third sleeve slidably mounted in the first sleeve and the second sleeve; Wherein, an air outlet hole is provided on the second sleeve, and a pneumatic valve is arranged in the third sleeve, and at least part of the gas in the intake cavity is discharged through the air outlet hole by the pneumatic valve.

[0014] In some embodiments, the limiting assembly further includes a control intake structure provided on a side of the one-way intake structure close to the flexible connection screen, and the control intake structure is used to control the pressure in the intake cavity. The control intake structure includes: A first disc arranged in the third sleeve and fixedly connected to the first sleeve, and the first disc is provided with a first air hole; A second disc arranged in the third sleeve and magnetically attracted to the first disc, and a second air hole is provided in the middle of the second disc; A third disc arranged on a side of the second disc away from the first disc; and A telescopic shaft with a guide air hole in the center, one end of the telescopic shaft is connected to the second disc, and the other end of the telescopic shaft is connected to the third disc; Wherein, the first air hole and the second air hole are selectively communicated, and the guide air hole is communicated with the second air hole and the intake cavity.

[0015] In some embodiments, the support assembly further includes a telescopic support leg provided at one end of the third sleeve away from the flexible connection screen. The telescopic support leg has an air chamber communicated with the third sleeve. By deflating through the control intake structure, part of the gas enters the air chamber to cause the telescopic support leg to extend radially along the third sleeve.

[0016] In some embodiments, a first support heat-conducting layer is provided on the backlight side of the first display screen. The first support heat-conducting layer is connected to the fixing mechanism, and the first support heat-conducting layer is used to dissipate the heat generated by the first display screen.

[0017] In some embodiments, a second support and heat conduction layer is provided on the backlight side of the second display screen. The second support and heat conduction layer is connected to the fixing mechanism, and the second support and heat conduction layer is used to dissipate the heat generated by the second display screen.

[0018] In some embodiments, 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.

[0019] In some embodiments, 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.

[0020] The display device provided by the embodiments of the present application, by using a flexible connection screen at the folding part and arranging rigid display screens (the first display screen and the second display screen) at both ends of the flexible connection screen, makes skillful use of the foldable characteristics of the flexible screen. Compared with the prior art in which a hinge is arranged at the folding part, the display device provided by the embodiments of the present application is not easy to generate creases; in addition, through the fixing mechanism, the bending state or the unfolded state of the flexible connection screen can be maintained, so that the entire display device can present the angle required by the user, which can be fully folded, can also be fully unfolded, or can be in a state between these two states (the included angle between the first display screen and the second display screen is in (0~180°)), so as to further facilitate the user to use and is beneficial to improving the use experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 is the structural schematic diagram of the display device provided by the embodiments of the present application Figure 1 ; Figure 2 is the structural schematic diagram of the display device provided by the embodiments of the present application Figure 2 ; Figure 3 is the structural schematic diagram of the display device provided by the embodiments of the present application Figure 3 ; Figure 4 is the structural schematic diagram of the display device provided by the embodiments of the present application Figure 4 ; Figure 5Yes Figure 4 The enlarged view of part A in Figure 6 Yes Figure 4 The enlarged view of part B in Figure 7 It is a schematic structural diagram of a fixing structure in the display device provided by the embodiment of the present application; Figure 8 Yes Figure 7 The enlarged view of part C in

[0023] Among them, the reference numerals of the attached drawings: 10. Flexible connection screen; 11. Flexible display layer; 12. Flexible flat layer; 13. Folding structure; 131. Flexible matrix layer; 132. Folding sheet layer; 20. First display screen; 200. First support heat conduction layer; 21. Camera module; 30. Second display screen; 300. Second support heat conduction layer; 31. Protection component; 40. Fixing mechanism; 41. Support component; 411. Support head; 4111. Buffer layer; 412. Second sleeve; 4120. Air outlet; 413. Third sleeve; 4130. Ventilation pipeline; 4131. First section; 4132. Second section; 4133. Air pressure valve; 414. Telescopic support leg; 4140. Air chamber; 42. Connection component; 421. First telescopic rod; 422. Second telescopic rod; 43. Limit component; 431. First sleeve; 4311. Dialing block; 432. First transmission rod; 433. Second transmission rod; 434. Unidirectional air intake structure; 4340. Intake cavity; 435. First damping member; 436. Second damping member; 437. Control air intake structure; 4371. First disc; 4372. Second disc; 4373. Third disc; 4374. Telescopic shaft; 4375. Magnetic part; 4376. Return spring; 400. First air hole; 401. Second air hole; 402. Air guide hole. Detailed implementation manners

[0024] In the following description, for the purpose of illustration rather than limitation, specific details such as specific system structures and technologies are put forward in order to thoroughly understand the embodiments of the present application. However, those skilled in the art should clearly understand 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 avoid unnecessary details from interfering with the description of the embodiments of the present application.

[0025] It should also be understood that the term "and / or" used in the specification 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 related listed items, and includes these combinations.

[0026] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can 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 can be directly connected to the other element or indirectly connected to the other element.

[0027] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the embodiments of the present application.

[0028] In addition, in the description of the specification of the embodiments of the present application and the appended claims, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions, and cannot be understood as indicating or implying relative importance.

[0029] The reference to "some embodiments" or "some embodiments" etc. described in the specification of the embodiments of the present application means that in one or more embodiments of the embodiments of the present application, specific features, structures or characteristics described in connection with the embodiment are included. Thus, statements such as "in some embodiments", "in some embodiments", "in other some embodiments", "in still other some embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiments, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. Terms such as "comprising", "including", "having" and their variants mean "including but not limited to", unless otherwise specifically emphasized in other ways. "Plurality" means two or more.

[0030] The embodiments of the present application provide 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. The first display screen 20 and the second display screen 30 are respectively connected to both ends of the flexible connection screen 10; The display device has a light-emitting side and a backlight side. A fixing mechanism 40 is provided on the backlight side of the display setting. The fixing mechanism 40 is respectively connected to the first display screen 20, the second display screen 30, and the flexible connection screen 10; such as Figure 1As shown, when the display device is in the folded state, the flexible connection screen 10 is bent, and the included angle between the first display screen 20 and the second display screen 30 is α, where 0° ≤ α < 180°. The fixing mechanism 40 fixes the first display screen 20 and the second display screen 30 to maintain the bent state of the flexible connection screen 10. As Figure 2 shown, when the display device is in the unfolded state, the flexible connection 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 connection screen 10, the first display screen 20, and the second display screen 30 to prevent the flexible connection screen 10 from being bent.

[0031] The display device provided by the embodiment of the present application uses a flexible connection screen 10 at the folding position and arranges rigid display screens (the first display screen 20 and the second display screen 30) at both ends of the flexible connection screen 10, making clever use of the foldable characteristics of the flexible screen. Compared with the hinge set at the folding position in the prior art, the display device provided by the embodiment of the present application is not prone to creases. In addition, through the fixing mechanism 40, the bent state or the unfolded state of the flexible connection screen 10 can be maintained, so that the entire display device can present the angle required by the user. It can be fully folded, that is, the included 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 included angle α between the first display screen 20 and the second display screen 30 is 180°, or it can be in a state between these two states, that is, the included angle α between the first display screen 20 and the second display screen 30 is between 0° and 180°. This can further facilitate the user's use and is beneficial to improving the user experience.

[0032] In application, the first display screen and the second display screen are one of a rigid display screen or a flexible display screen. Among them, the rigid display screen usually uses a rigid substrate such as glass or metal, with a stable structure and cannot be bent. Its types include LCD, LED, and OLED, etc. The flexible display screen uses a flexible substrate, such as a polymer, and supports bending, folding, and even curling. Its types include AMOLED (Active-Matrix Organic Light-Emitting Diode) flexible screens, flexible LEDs, electronic papers, etc. In the application, the entire display device is an OLED (Organic Light-Emitting Diode) display screen, that is, the first display screen 20, the second display screen 30, and the flexible connection screen 10 all adopt OLED display screens. OLED uses self-luminous technology and does not require a backlight. Each pixel emits light independently, and the screen can be made thinner (even flexible), while reducing hardware complexity and power consumption. The backlight module and the liquid crystal layer are removed, and the thickness can be reduced to less than 1 mm, making the device lighter (such as ultra-thin TVs and mobile phones). In some other embodiments, in order to save costs, the first display screen 20 and the second display screen 30 can also adopt a liquid crystal display screen or an LED display screen. The first display screen 20 and the second display screen 30 can be one of an OLED display screen, an LED display screen, and an LCD display screen at the same time, or the first display screen 20 and the second display screen 30 can be one of an OLED display screen, an LED display screen, and an LCD display screen respectively.

[0033] 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) to replace the traditional glass and can be bent repeatedly without breaking. The current technology can achieve a folding radius of 1-3 mm, making the device more compact. When unfolded, it is a tablet, and when folded, it is a mobile phone. In the prior art, the free transformation of the screen form (such as inward folding, outward folding, double folding, curling) is usually achieved through a hinge structure. However, although it takes into account the large-screen experience and portability, it will produce creases. However, for the display device provided in the embodiments of the present application, the folding is fixed through the flexible connection screen 10 and the fixed structure provided on the backlight side of the flexible connection screen 10, and the closed-loop functions such as folding-fixing-resetting can be completed, and it is not easy to produce creases, greatly improving the user experience.

[0034] In some embodiments, as Figure 2 and Figure 3 shown, the flexible connection screen 10 includes a flexible display layer 11, a flexible flat layer 12, and a folding structure 13; The flexible flat layer 12 is provided on the side of the flexible display layer 11 away from the light-emitting side; The folding structure 13 is provided on the side of the flexible flat layer 12 away from the flexible display layer 11; The folding structure 13 is used to assist the flexible display layer 11 to bend and maintain the bent state of the flexible display layer 11.

[0035] In this way, the folding structure 13 assists the flexible display layer 11 to fold, so as to realize the folding and unfolding of the entire display device. Compared with the hinge connection in the prior art, the folding structure 13 in the embodiments of the present application is not easy to cause creases on the flexible display layer 11, which is beneficial to improving the use experience.

[0036] In an application, the flexible display layer 11 is a flexible OLED layer. The flexible flat layer 12 can be 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 has low cost and is easy to coat (by spin coating or inkjet printing processes). Epoxy resin has high hardness and chemical corrosion resistance, and is suitable for the protective layer. Silicone material has good elasticity and stress cracking resistance (suitable for multiple folds). Photosensitive polyimide combines the heat resistance of polyimide and lithography process compatibility, and can be directly patterned.

[0037] In some embodiments, as Figure 2 and Figure 3 shown, the folding structure 13 includes a flexible substrate layer 131 and folding sheet layers 132; One side of the flexible substrate layer 131 is connected to the fixing mechanism 40; The folding sheet layers 132 are arranged along the first direction, and one end of the folding sheet layers 132 is connected to the flexible substrate layer 131, and the other end of the folding sheet layers 132 is connected to the flexible flat layer 12.

[0038] When the flexible display layer 11 is bent, the flexible substrate layer 131 folds accordingly. At this time, the end of the folding sheet layer 132 away from the flexible display layer 11 is compressed, so as to cooperate with the flexible display layer 11 to achieve smooth folding, avoid generating creases, and the folding sheet layer 132 returns to its original state when unfolded.

[0039] In an application, the flexible substrate 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. To ensure flexible foldability and certain elasticity, so that it can switch back and forth between the folded and unfolded states, and it is not easy to generate creases at the folding place.

[0040] 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.

[0041] In an application, when the display device is in a folded state, the flexible connection screen 10 is bent, and the included angle between the first display screen 20 and the second display screen 30 is α, 0°≤α<180°. The fixing mechanism 40 fixes the first display screen 20 and the second display screen 30 to maintain the bent state of the flexible connection screen 10. The sizes of the first display screen 20 and the second display screen 30 can be the same or different. As Figure 1As shown, when the included 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 fully folded state, and in the second direction, the first display screen 20 and the second display screen 30 at least partially overlap.

[0042] In an application, such as Figure 2 As shown, when the display device is in an unfolded state, the flexible connection 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 connection screen 10, the first display screen 20, and the second display screen 30 to prevent the flexible connection screen 10 from being bent. At this time, the included angle between the first display screen 20 and the second display screen 30 is 180°, the first display screen 20, the second display screen 30, and the flexible connection screen 10 are in the same plane, and at this time the flexible connection screen is not bent.

[0043] In some embodiments, such as Figure 4 As shown, the fixing mechanism 40 includes a support assembly 41, a connection assembly 42, and a limit assembly 43; The support assembly 41 is disposed on the backlight side of the flexible connection screen 10; The connection assembly 42 includes a first telescopic rod 421 and a second telescopic rod 422. One end of the first telescopic rod 421 is hinged to the backlight side of the first display screen 20, and the other end of the first telescopic rod 421 is hinged to the support assembly 41. One end of the second telescopic rod 422 is hinged 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; The limit assembly 43 is disposed at one end of the support assembly 41 away from the flexible connection screen 10 and is hinged to the first telescopic rod 421 and the second telescopic rod 422. The limit assembly 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 changes from the folded state to the unfolded state, so that the first display screen 20 and the second display screen 30 are disposed at a preset angle.

[0044] It should be noted that the preset angle refers to the included angle α between the first display screen 20 and the second display screen 30, and its range is between 0° and 180°, and includes the end point values. Such a setting is to facilitate the user to arbitrarily select the required angle, not limited to the fully folded state and the fully unfolded state, thereby improving the user experience and interest.

[0045] In some embodiments, such as Figure 5 As shown, the limit 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; The first sleeve 431 is slidably mounted in the support assembly 41; 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; 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; The one-way air intake structure 434 is disposed inside the first sleeve 431 and an air intake cavity 4340 is formed on a side away from the flexible connection screen 10; 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 to move 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.

[0046] In application, 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 needs to be applied. Taking the display device as a folding mobile phone or a folding tablet as an example, the first display screen 20 and the second display screen 30 are directly bent by hand to bend the flexible connection 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 toward the side close to the flexible connection screen 10 in the first direction. At the same time, the air intake cavity 4340 of the one-way air intake structure 434 generates negative pressure and inhales air to 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 cavity 4340. The one-way valve is also filled with incompressible inert gas.

[0047] In some embodiments, Figure 5As shown, the end of the first sleeve 431 close to the support assembly 41 is sleeved with a first damping member 435. In other embodiments, the end of the first sleeve 431 away from the support assembly 41 is sleeved with a second damping member 436. In other embodiments, the end of the first sleeve 431 close to the support assembly 41 is sleeved with a first damping member 435, and the end of the first sleeve 431 away from the support assembly 41 is sleeved with a second damping member 436. The presence of the first damping member 435 and the second damping member 436 can prevent the first sleeve 431 from moving too fast when the first display screen 20 and the second display screen 30 are bent, and maintain stable movement, thereby protecting the display device. Further, the presence of the second damping member 436 can also position the position of the first sleeve 431, that is, when the display device changes from the folded state to the unfolded state, the second damping member 436 is deformed first, and when it changes from the unfolded state to the folded state, the second damping member 436 returns to its original position and positions 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.

[0048] In some embodiments, Figure 6 As shown, the support assembly 41 includes a support head 411, a second sleeve 412 and a third sleeve 413; The support head 411 is connected to the backlight side of the flexible connection screen 10; 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; The second sleeve 412 is provided with an air outlet 4120, and the third sleeve 413 is provided with an air pressure valve 4133, through which at least part of the gas in the air inlet cavity 4340 is discharged through the air outlet 4120. This is conducive to regulating the air pressure of the air inlet cavity 4340 in the one-way air inlet structure 434 to stabilize the position of the first sleeve 431.

[0049] In applications, such as Figure 3 and Figure 6As 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 the folded state to the unfolded state, the support head 411 will apply a supporting force to the flexible connection screen 10. 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 acting force of the support head 411 on the flexible connection screen 10. In addition, to further slow down the acting 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 is 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.

[0050] In application, 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, the second sleeve 412 is sleeved outside the first sleeve 431, the third sleeve 413 can slide in the first sleeve 431 and the second sleeve 412, and the first sleeve 431 can slide in the first sleeve 431. Among them, the materials of the first sleeve 431, the second sleeve 412, and the third sleeve 413 are magnetic metals. To further fix the position of the first sleeve 431 (so as to stably support 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 coupled, so as to further fix the position of the first sleeve 431. Further, at one end of the third sleeve 413 close to the second sleeve 412, and a strong rubidium magnetic pole or a strong rubidium magnet is provided on the inner side wall of the second sleeve 412. When the third sleeve 413 is moved to the corresponding position to be fixed to the second sleeve 412, stable support for the first sleeve 431 is achieved. Since the first sleeve 431 and the third sleeve 413 are movable and the second sleeve 412 is fixed, by strengthening the fixation of the first sleeve 431 and the third sleeve 413 to the second sleeve 412 respectively, the first display screen 20 and the second display screen 30 of the display device in the unfolded state can be fixed.

[0051] In some embodiments, such as Figure 6As shown, the third sleeve 413 includes a first section 4131 and a second section 4132. The first section 4131 is located on a side close to the flexible connection screen 10, and the second section 4132 is located on a side away from the flexible connection screen 10. The first section 4131 slides in the second sleeve 412, and the second section 4132 slides in 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, so that the first sleeve 431 slides in the second sleeve 412. The third sleeve 413 moves toward the direction close to the flexible connection screen 10 until the side wall of the third sleeve 413 blocks the air outlet 4120 on the second sleeve 412. At this time, the air pressure valve 4133 located in the third sleeve 413 is closed, thereby maintaining the positions of the third sleeve 413 and the first sleeve 431, thereby stably supporting the first display screen 20 and the second display screen 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.

[0052] In some embodiments, Figure 7 As shown, the limiting assembly 43 also includes a control air intake structure 437 disposed on one side of the one-way air intake structure 434 close to the flexible connection screen 10, and 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 at different angles is different, when an external force is applied to pry the first display screen 20 and the second display screen 30, the pressure generated by the gas sucked into the air intake cavity 4340 through the one-way valve may be relatively large. In order to maintain balance, the pressure of the air intake cavity 4340 needs to be appropriately released. Therefore, the control air intake structure 437 can timely discharge part of the gas in the air intake cavity 4340, thereby maintaining the entire limiting assembly 43 to stably support the first display screen 20 and the second display screen 30.

[0053] In some embodiments, 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; 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; 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; The third disk 4373 is disposed on a side of the second disk 4372 away from the first disk 4371; 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. 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 .

[0054] 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.

[0055] In application, the first disk 4371 is magnetically connected to the second disk 4372. A magnetic attraction member 4375 may be provided between the first disk 4371 and the second disk 4372. The magnetic attraction member 4375 is a strong neodymium magnet, thereby fixing the first disk 4371 and the second disk 4372. The strong neodymium 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 neodymium 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.

[0056] In some embodiments, Figure 8 As shown, the first disc 4371 is connected to the first sleeve 431, and the peripheral 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 direction of the flexible connection screen 10 (at this time, the first disc 4371 and the second disc 4372 are fixed by magnetic attraction), so that negative pressure is generated in the air inlet cavity 4340, and then air is sucked in 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 .

[0057] In applications, such as Figure 8As shown, in order to facilitate the magnetic connection separation between the first disc 4371 and the second disc 4372, a toggle block 4311 is provided on the outer side 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, only an acting force opposite to the moving direction of the first sleeve 431 needs to be applied to the toggle block 4311. In addition, the second disc 4372 is connected to the third disc 4373 through a return spring 4376, so that it is convenient for the second disc 4372 not to accelerate the air outlet speed of the air inlet chamber 4340 when moving. An air inlet chamber 4340 as described above is formed between the third disc 4373 and the one-way valve, and the existence 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 resilience force to facilitate the connection tightness between the first disc 4371 and the second disc 4372, thereby ensuring the pressure stability of the air inlet chamber 4340.

[0058] In some embodiments, as Figure 8 shown, the support assembly 41 further includes a telescopic support leg 414 provided at one end of the third sleeve 413 away from the flexible connection screen 10. The telescopic support leg 414 has an air chamber 4140 communicated with the third sleeve 413. By controlling the intake structure 437 to deflate, part of the gas enters the air chamber 4140 to cause the telescopic support leg 414 to extend along the radial direction of the third sleeve 413. In this way, the existence of the telescopic support leg 414 can, on the one hand, facilitate the user to pick up and place, and in addition, it is more beautiful in appearance.

[0059] In the application, as Figure 8 shown, a ventilation pipeline 4130 is formed on the side wall of the third sleeve 413. The ventilation pipeline 4130 communicates the air chamber 4140 inside the telescopic support leg 414 and the first air hole 400. In this way, when it is necessary to expand the telescopic support leg 414, by separating the first disc 4371 and the second disc 4372, the gas in the air inlet chamber 4340 enters the air chamber 4140 through the guide air hole 402, the second air hole 401, the first air hole 400 and the ventilation pipeline 4130, so as to expand the support leg and form a T-shaped structure.

[0060] In some embodiments, as Figure 2 and Figure 3 shown, a first support heat conduction layer 200 is provided on the backlight side of the first display screen 20. The first support heat conduction layer 200 is connected to the fixing mechanism 40, and the first support heat conduction layer 200 is used to dissipate the heat generated by the first display screen 20. Specifically, the first support heat conduction layer 200 is hingedly connected to the first telescopic rod 421. In some embodiments, as Figure 2 and Figure 3As shown, a second support and heat conduction layer 300 is provided on the backlight side of the second display screen 30. The second support and heat conduction layer 300 is connected to the fixing mechanism 40, and the second support and heat conduction layer 300 is used to dissipate the heat generated by the second display screen 30. Specifically, the second support and heat conduction layer 300 is hingedly connected to the second telescopic rod 422. In applications, the materials of the first support and heat conduction layer and the second support and heat conduction layer can be metal materials, composite materials, ceramic materials, heat-conducting engineering plastics, etc. Among them, the metal materials can be aluminum and its alloys, magnesium alloys, copper and its alloys, etc. Among them, aluminum and its alloys have the characteristics of light weight, high thermal conductivity, medium strength, and low cost. They are widely used in the backplane of liquid crystal displays, TV frames, LED backlight heat dissipation brackets, etc., such as aluminum heat dissipation fins or frames. Composite materials include carbon fiber reinforced composite materials, metal matrix composite materials, etc., which have high strength and light weight, but relatively low original thermal conductivity; the thermal conductivity can be improved by adding fillers such as graphene and carbon nanotubes. The support frames of high-end display devices (such as e-sports monitors) need to be customized. Ceramic materials include aluminum nitride, beryllium oxide, etc. Heat-conducting engineering plastics include modified polyimide or polycarbonate, which have good thermal conductivity and combine flexibility and light weight. In some embodiments, such as 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 protection component 31 is provided on the backlight side of the second display screen 30. When the display device is in the folded state, the protection component 31 is used for the camera module 21 to be embedded therein to protect the camera module 21.

[0061] The working principle of the display device provided by the embodiment of the present application is as follows: Such as Figures 1 to 8 As shown, when changing from the folded state to the unfolded state, by applying an external force to the first display screen 20 and the second display screen 30, the flexible connection screen 10 is slowly unfolded. At this time, the first telescopic rod 421 and the second telescopic rod 422 are stretched after being pulled by the acting force, driving the first transmission rod 432 and the second transmission rod 433 to transmit the acting force to the first sleeve 431. The first sleeve 431 receives an upward acting force and thus moves in the direction close to the flexible connection screen 10; the movement of the first sleeve 431 drives the first disk 4371, the second disk 4372 and the third disk 4373 to move upward, so that a negative pressure is generated in the air inlet cavity 4340 between the third disk 4373 and the one-way valve, and thus air is sucked from the outside through the one-way valve.

[0062] During the movement of the first sleeve 431, the air inlet cavity 4340 is always taking in air. When it is necessary to maintain the corresponding angle, the toggle block 4311 can be pulled downward to separate the first disc 4371 and the second disc 4372, and part of the air in the air inlet cavity 4340 is discharged to the outside through the air guide hole 402, the second air hole 401, the first air hole 400 and the air outlet hole 4120 to achieve balance. On the other hand, during the air inlet cavity 4340 taking in air, the third sleeve 413 is affected by the pressure and will always move toward the direction of the flexible connection screen 10. When the first display screen 20 and the second display screen 30 are fully unfolded, the third sleeve 413 will cover the air outlet hole 4120 on the second sleeve 412.

[0063] In order to make the entire display device look beautiful and convenient for users to take and place, the toggle block 4311 outside the second disk 4372 can be turned to separate the first disk 4371 and the second disk 4372, and 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.

[0064] In application, the display device provided in the embodiment of the present application may specifically be a foldable mobile phone, a foldable tablet, or a large foldable display screen.

[0065] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0066] 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, those skilled in the art 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 deviate the essence of the corresponding technical solutions 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 connection screen, a first display screen and a second display screen respectively arranged at both ends of the flexible connection screen; The display device has a light-emitting side and a backlight side, and a fixing mechanism is arranged on the backlight side. 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 connection screen is bent, and the included angle between the first display screen and the second display screen is α, 0° ≤ α < 180°. The fixing mechanism fixes the first display screen and the second display screen to maintain the bent state of the flexible connection screen; When the display device is in an unfolded state, the flexible connection screen, the first display screen and the second display screen are located in the same plane. The fixing mechanism is used to support the flexible connection screen, the first display screen and the second display screen to prevent the flexible connection screen from being bent.

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

3. The display device according to claim 2, characterized in that, The folding structure includes: A flexible matrix layer, one side of which is connected to the fixing mechanism; Folding sheet layers arranged in a row along a first direction, and one end of the folding sheet layers is connected to the flexible matrix layer, and the other end of the folding sheet layers is connected to the flexible flat layer.

4. The display device according to claim 1, wherein The fixing mechanism includes: A support assembly arranged on the backlight side of the flexible connection screen; A connection assembly including a first telescopic rod and a second telescopic rod. One end of the first telescopic rod is hingedly connected to the backlight side of the first display screen, 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 limiting assembly is arranged at one end of the support assembly away from the flexible connection screen and is hingedly connected to the first telescopic rod and the second telescopic rod. The limiting assembly is used to assist the first telescopic rod and the second telescopic rod to support the first display screen and the second display screen when the display device changes from the folded state to the unfolded state, so that the first display screen and the second display screen are arranged at a preset angle.

5. The display device according to claim 4, wherein, The limiting assembly includes: A first sleeve slidably installed in the support assembly; A first transmission rod, one end of which is connected to the first sleeve, and the other end of which is hingedly connected to the first telescopic rod; A second transmission rod, one end of which is connected to the first sleeve, and the other end of which is hingedly connected to the second telescopic rod; and A one-way air intake structure is arranged inside the first sleeve, and an air intake cavity is formed on the side away from the flexible connection screen; When the display device transitions 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 to move towards the direction close to the flexible connection screen, and causing the air intake cavity to inhale air to fix the position of the first sleeve.

6. The display device according to claim 5, 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 the second sleeve is connected to the first sleeve; and A third sleeve slidably installed in the first sleeve and the second sleeve; Wherein, an air outlet hole is provided on the second sleeve, and a pneumatic valve is arranged in the third sleeve, and at least part of the gas in the air intake cavity is discharged through the air outlet hole by the pneumatic valve.

7. The display device according to claim 6, characterized in that, The limiting assembly further includes a control air intake structure arranged on the side of the one-way air intake structure close to the flexible connection screen, and the control air intake structure is used to control the pressure in the air intake cavity. The control air intake structure includes: A first disc arranged in the third sleeve and fixedly connected to the first sleeve, and a first air hole is opened on the first disc; A second disc arranged in the third sleeve and magnetically attracted to the first disc, and a second air hole is opened in the middle of the second disc; A third disc arranged on the side of the second disc away from the first disc; and A telescopic shaft with a guide air hole in the center, one end of the telescopic shaft is connected to the second disc, and the other end of the telescopic shaft is connected to the third disc; Wherein, the first air hole and the second air hole are selectively communicated, and the guide air hole is communicated with the second air hole and the air intake cavity.

8. The display device according to claim 7, wherein The support assembly further includes a telescopic support leg arranged at one end of the third sleeve away from the flexible connection screen. The telescopic support leg has an air chamber communicated with the third sleeve. By deflating through the control air intake structure, part of the gas enters the air chamber to cause the telescopic support leg to extend along the radial direction of the third sleeve.

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

10. The display device according to any one of claims 1 to 9, characterized in that, A camera module is arranged on the backlight side of the first display screen, and a protection assembly is arranged on the backlight side of the second display screen. When the display device is in a folded state, the protection assembly 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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