Flexible display panel and flexible display device

Abstract

The embodiments of the present application provide a flexible display panel and a flexible display device, wherein the flexible display panel includes a first flexible layer, a flexible support layer, and a second flexible layer stacked in sequence; the first flexible layer is embedded with a light-emitting module; a connecting structure is provided between the first flexible layer and the second flexible layer; the connecting structure includes a stretching mechanism and a folding mechanism, the stretching mechanism is connected to one of two adjacent light-emitting modules, the folding mechanism is rotationally connected to the stretching mechanism, and the folding mechanism is connected to the other of the two adjacent light-emitting modules; wherein the stretching mechanism is used to make the light-emitting modules move away from or approach each other in the first direction and / or the second direction, and the folding mechanism is used to make the flexible display panel fold or bend in a third direction. The flexible display panel and the flexible display device provided by the embodiments of the present application can complete the stretching and folding of the screen through the stretching mechanism and the folding mechanism, integrating the stretching and folding functions into one.

Description

Technical Field

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

[0002] Flexible display panels refer to those display screens that can be bent, folded or even stretched. They are usually based on OLED (Organic Light-Emitting Diode) technology, because OLED does not require backlight and can be deposited on flexible substrates. Flexible display panels provide unprecedented possibilities for the design of consumer electronic products, making devices thinner and more portable, while also opening the door to new ways of interaction.

[0003] Folding display panels mainly refer to screens that can be folded within a certain range without affecting the display effect. This type of screen is usually used in mobile devices such as mobile phones and tablets to achieve a larger display area while maintaining the portability of the device. Stretched display panels are a more cutting-edge technology that allows the display to be stretched and deformed in multiple directions, thereby changing the size and shape of the display area. At present, folding display panels have entered the commercialization stage and have certain applications in the market, such as a number of folding screen mobile phones and tablets have been launched. Among them, the folding or stretching OLED screen perfectly reflects the flexible characteristics of OLED and has been used in products such as mobile phones and tablets. Common products on the market only have one of the folding function and the stretching function, and there is no product that combines both stretching and folding functions.

[0004] To sum up, it is very necessary to develop a display panel that can integrate stretching and folding functions. Summary of the invention

[0005] In view of this, the embodiments of the present application provide a flexible display panel and a flexible display device to solve the technical problem that the existing flexible display panel cannot integrate the stretching function and the folding function into one.

[0006] In a first aspect, an embodiment of the present application provides a flexible display panel, comprising a first flexible layer, a flexible supporting layer, and a second flexible layer stacked in sequence;

[0007] The first flexible layer is embedded with a light emitting module, at least two of the light emitting modules are provided, and the light emitting modules are located on a side of the flexible supporting layer away from the second flexible layer;

[0008] A connection structure is provided between the first flexible layer and the second flexible layer, and the connection structure connects two adjacent light-emitting modules;

[0009] The connection structure includes a stretching mechanism and a folding mechanism, wherein the stretching mechanism is connected to one of the two adjacent light-emitting modules, the folding mechanism is rotationally connected to the stretching mechanism, and the folding mechanism is connected to the other of the two adjacent light-emitting modules;

[0010] The stretching mechanism is used to make the light-emitting modules move away from or approach each other in the first direction and / or the second direction, and the folding mechanism is used to make the flexible display panel fold or bend in the third direction.

[0011] In some embodiments, the stretching mechanism comprises:

[0012] A connecting frame connected to one of the two adjacent light-emitting modules;

[0013] a movable frame, one end of which is slidably connected to the connecting frame, and the other end of which is rotatably connected to the folding mechanism; and

[0014] A first limiting assembly, comprising a card block and a card slot, wherein the card block is arranged on the mobile frame for movement along the second direction, and the card slot is located on the connecting frame, and the card slot is used for the card block to be inserted into, so as to limit the relative position between the connecting frame and the mobile frame;

[0015] A reset component is arranged on the connecting frame, and is used to push the card block out of the card slot so that the connecting frame and the moving frame are free from the limit and can undergo relative displacement.

[0016] In some embodiments, a first elastic member is provided between the card block and the movable frame, and the first elastic member has elastic potential energy for driving the card block to move away from the movable frame. When the card block moves to a position corresponding to the card slot, the first elastic member pushes the card block to the card slot to limit the relative position between the connecting frame and the movable frame.

[0017] In some embodiments, a second elastic member is disposed on the connecting frame, the other end of the second elastic member is connected to the movable frame, and the second elastic member has elastic potential energy for driving the movable frame toward the connecting frame so that the flexible display panel returns to an initial state.

[0018] In some embodiments, the connecting frame includes a connecting section and a first extending section and a second extending section provided at both ends of the connecting section, the connecting section is connected to one of the two adjacent light emitting modules, and the first extending section and the second extending section extend toward the other of the two adjacent light emitting modules;

[0019] The movable frame is slidably disposed between the first extension section and the second extension section, and a channel is formed between the first extension section and the movable frame, the card block is located in the channel, and the card slot is located in the first extension section and communicated with the channel.

[0020] In some embodiments, the first extending section is provided with a plurality of the slots spaced apart in the first direction.

[0021] In some embodiments, the second extension section is provided with the card slot on a side close to the mobile frame, and the channel is formed between the second extension section and the mobile frame, and the mobile frame is provided with the card block on a side close to the second extension section.

[0022] In some embodiments, the reset component comprises:

[0023] An extrusion member, movable along the first direction and connected to the side wall of the slot;

[0024] A pushing member connected to the top wall of the slot moves along the second direction; and

[0025] An air channel, one end of which is connected to the extrusion member, and the other end of which is connected to the pushing member;

[0026] One end of the pushing member is arranged in the airway, and the other end of the pushing member is used to abut against the card block; wherein, when the card block squeezes the squeezing member, the squeezing member compresses the airway and increases the pressure in the airway to push the pushing member to push the card block out of the card slot.

[0027] In some embodiments, the folding mechanism comprises:

[0028] A rotating frame, one end of which is connected to the light emitting module, and the other end of which is rotatably connected to the mobile frame;

[0029] The second limiting component includes a first limiting member and a second limiting member, wherein the first limiting member is movably arranged on the movable frame along a first direction, and the second limiting member is arranged on the rotating frame, and the first limiting member is used to cooperate with the second limiting member to limit the angular relationship between the rotating frame and the movable frame.

[0030] In some embodiments, the first stopper comprises:

[0031] A fixing part, the movable frame is provided with a cavity, and the fixing part is installed in the cavity by moving along a first direction;

[0032] A spring, one end of which is fixed to the movable frame, and the other end of which is connected to an end of the fixed portion away from the rotating frame;

[0033] Among them, the fixing part is provided with a first latching tooth, the second limiting member includes at least two second latching teeth, a limiting groove for the first latching tooth to be engaged is formed between two adjacent second latching teeth, and the first spring has elastic potential energy for driving the first latching tooth to move toward the limiting groove.

[0034] In some embodiments, the rotating frame comprises:

[0035] A fixed end connected to the light emitting module;

[0036] A rotating end, rotatably connected to the moving frame via a rotating shaft; and

[0037] A connecting column connects the fixed end and the rotating end respectively.

[0038] In some embodiments, the light emitting module includes a plurality of pixel units.

[0039] In some embodiments, the connecting frame is provided with a first connecting member connected to the light emitting module, and the fixed end is provided with a second connecting member connected to the light emitting module.

[0040] In a second aspect, an embodiment of the present application provides a flexible display device, including:

[0041] case;

[0042] As described in the first aspect, the flexible display panel is disposed in the housing.

[0043] The flexible display panel and the flexible display device provided in the embodiments of the present application realize folding and stretching of the display panel through a connecting structure. Specifically, the connecting structure includes a stretching mechanism and a folding mechanism. The stretching mechanism is connected to one of two adjacent light-emitting modules, and the folding mechanism is rotatably connected to the stretching mechanism, and the folding mechanism is connected to the other of the two adjacent light-emitting modules. The stretching mechanism is used to make the light-emitting modules move away from or approach each other in the first direction and / or the second direction, and the folding mechanism is used to make the flexible display panel fold or bend in the third direction, thereby realizing the integration of the stretching function and the folding function, greatly improving the applicability of the display panel and giving full play to the flexible characteristics of the display panel.

[0044] The flexible display device provided in the embodiment of the present application includes the above-mentioned flexible display panel, which couples the folding function and the stretching function on the OLED screen, perfectly reflecting the flexible characteristics of OLED. Different from the display devices with a single function of stretching or folding of traditional products, the flexible display device provided in the embodiment of the present application has higher technical efficiency, and can achieve stretching and / or folding on the same screen; when stretching and folding are performed at the same time, it can adapt to richer and novel application scenarios, greatly improving the applicability of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 paying creative work.

[0046] Figure 1 The structure of the flexible display panel provided in the embodiment of the present application is shown in FIG. Figure 1 ;

[0047] Figure 2 The structure of the flexible display panel provided in the embodiment of the present application is shown in FIG. Figure 2 ;

[0048] Figure 3 is a schematic diagram of the side structure of a flexible display panel provided in an embodiment of the present application;

[0049] Figure 4 is a schematic diagram of the cross-sectional structure of a flexible display panel provided in an embodiment of the present application;

[0050] Figure 5 is a structural schematic diagram of a connection mechanism in a flexible display panel provided in an embodiment of the present application;

[0051] Figure 6 yes Figure 5 The structural schematic diagram of the mobile rack shown in;

[0052] Figure 7 yes Figure 6 The enlarged view of point A in the middle;

[0053] Figure 8 yes Figure 5 A structural schematic diagram of the movable frame and the first limiting member shown in ;

[0054] Fig. 9 yes Figure 5 A schematic diagram of the structure of the rotating frame and the second limiting member shown in ;

[0055] Fig.10The working state of the connection mechanism in the flexible display panel provided in the embodiment of the present application is shown in FIG. Figure 1 ;

[0056] Fig.11 The working state of the connection mechanism in the flexible display panel provided in the embodiment of the present application is shown in FIG. Figure 2 .

[0057] Among them, the figure numbers are:

[0058] 10. first flexible layer; 100. light emitting module;

[0059] 20. Flexible support layer;

[0060] 30. a second flexible layer;

[0061] 40. Connection structure;

[0062] 41. stretching mechanism; 411. connecting frame; 4110. card slot; 4111. connecting section; 4112. first extension section; 4113. second extension section; 4114. second elastic member; 4115. first connecting member; 412. moving frame; 413. first limit assembly; 4131. card block; 4132. first elastic member; 4133. guide shaft; 414. reset assembly; 4141. extrusion member; 4142. push member; 4143. airway;

[0063] 42. Folding mechanism; 421. Rotating frame; 4210. Rotating shaft; 4211. Fixed end; 4212. Rotating end; 4213. Connecting column; 4214. Second connecting member; 422. Second limiting assembly; 4221. First limiting member; 42211. Fixed portion; 42212. Spring; 42213. First latching tooth; 4222. Second limiting member; 42220. Limiting groove; 42221. Second latching tooth. DETAILED DESCRIPTION

[0064] In the following description, specific details such as specific system structures, technologies, etc. are proposed for the purpose of illustration rather than limitation, so as to provide 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 hindering the description of the embodiments of the present application.

[0065] 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.

[0066] 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.

[0067] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0068] 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.

[0069] References to "some embodiments" or "some embodiments" etc. 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. Thus, the statements "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in the different parts of 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.

[0070] OLED, that is (Organic Light-Emitting Diode);

[0071] PI, that is (Polyimide).

[0072] It should be noted that the first direction is the X direction in the figure, the second direction is the Y direction in the figure, and the third direction is the Z direction in the figure. The above is only for the convenience of understanding the technical solution of the embodiment of the present application and should not be understood as limiting the scope of protection of the embodiment of the present application.

[0073] A first aspect of the present application provides a flexible display panel, such as Figures 1 to 5As shown, the flexible display panel includes a first flexible layer 10, a flexible supporting layer 20 and a second flexible layer 30 which are stacked in sequence;

[0074] The first flexible layer 10 is embedded with a light emitting module 100, at least two light emitting modules 100 are provided, and the light emitting modules 100 are located on a side of the flexible supporting layer 20 away from the second flexible layer 30;

[0075] A connection structure 40 is provided between the first flexible layer 10 and the second flexible layer 30 , and the connection structure 40 connects two adjacent light emitting modules 100 ;

[0076] The connection structure 40 includes a stretching mechanism 41 and a folding mechanism 42. The stretching mechanism 41 is connected to one of the two adjacent light-emitting modules 100. The folding mechanism 42 is rotatably connected to the stretching mechanism 41. The folding mechanism 42 is connected to the other of the two adjacent light-emitting modules 100.

[0077] The stretching mechanism 41 is used to make the light emitting modules 100 move away from or approach each other in the first direction and / or the second direction, and the folding mechanism 42 is used to make the flexible display panel fold or bend in the third direction.

[0078] The flexible display panel provided in the embodiment of the present application adopts the first flexible layer 10, the flexible supporting layer 20 and the second flexible layer 30 as the basis of the flexible display panel, so that the entire display panel has flexible characteristics; then the display panel is folded and stretched through the connection structure 40, specifically, the connection structure 40 includes a stretching mechanism 41 and a folding mechanism 42, the stretching mechanism 41 is connected to one of the two adjacent light-emitting modules 100, the folding mechanism 42 is rotatably connected to the stretching mechanism 41, and the folding mechanism 42 is connected to the other of the two adjacent light-emitting modules 100; the stretching mechanism 41 is used to make the light-emitting modules 100 move away from or approach each other in the first direction and / or the second direction, and the folding mechanism 42 is used to make the flexible display panel fold or bend in the third direction, thereby realizing the integration of the stretching function and the folding function, greatly improving the applicability of the display panel and giving full play to the flexible characteristics of the display panel.

[0079] In the application, the materials of the first flexible layer 10, the flexible supporting layer 20 and the second flexible layer 30 include but are not limited to any one of polyimide, polyethylene terephthalate, polycarbonate, polyethylene naphthalate, polyetheretherketone, polyurethane, polyethylene, polypropylene, and polyamide. In some preferred embodiments, the materials of the first flexible layer 10, the flexible supporting layer 20 and the second flexible layer 30 are PI. Polyimide is a high-performance engineering plastic with excellent heat resistance, chemical corrosion resistance and mechanical strength, as well as good electrical insulation properties. These characteristics make PI materials particularly suitable for electronic devices that require lightweight, miniaturization and high reliability, especially in the field of flexible electronics. In OLED (organic light-emitting diode) flexible display screens, the PI layer is often used as a supporting layer or substrate because its flexibility and temperature resistance can well support the bending of the screen without damage.

[0080] In application, the light emitting module 100 includes a plurality of pixel units. In OLED, each pixel unit is composed of the following parts: Anode: usually a layer of conductive material, such as ITO (indium tin oxide). Organic Emitting Layer: contains a variety of organic materials for generating light. Cathode: another layer of conductive material for receiving electrons. Hole Transport Layer (HTL): helps holes to be transported from the anode to the light emitting layer. Electron Transport Layer (ETL): helps electrons to be transported from the cathode to the light emitting layer.

[0081] Working principle of pixel unit: When current passes through the anode and cathode, electrons and holes are injected from the cathode and anode into the light-emitting layer respectively. Electrons and holes recombine in the light-emitting layer, releasing energy and generating photons. Different organic materials can produce light of different colors. By combining red, green and blue pixel units, various colors can be displayed.

[0082] In some embodiments, Figure 4 and Figure 5 As shown, the stretching mechanism 41 includes a connecting frame 411, a moving frame 412, a first limiting component 413 and a resetting component 414;

[0083] The connecting frame 411 is connected to one of two adjacent light emitting modules 100;

[0084] One end of the moving frame 412 is slidably connected to the connecting frame 411, and the other end of the moving frame 412 is rotatably connected to the folding mechanism 42;

[0085] The first limiting assembly 413 includes a clamping block 4131 and a clamping slot 4110. The clamping block 4131 is movably disposed on the mobile frame 412 along the second direction. The clamping slot 4110 is located on the connecting frame 411. The clamping slot 4110 is used for the clamping block 4131 to be clamped in, so as to limit the relative position between the connecting frame 411 and the mobile frame 412.

[0086] The reset assembly 414 is disposed on the connecting frame 411 , and is used to push the clamping block 4131 out of the clamping slot 4110 , so that the connecting frame 411 and the moving frame 412 are free from the limit and can move relative to each other.

[0087] In some embodiments, Figure 5 As shown, a first elastic member 4132 is provided between the block 4131 and the mobile frame 412, and the first elastic member 4132 has elastic potential energy for driving the block 4131 away from the mobile frame 412. When the block 4131 moves to a position corresponding to the slot 4110, the first elastic member 4132 pushes the block 4131 to the slot 4110 to define the relative position between the connecting frame 411 and the mobile frame 412. In this way, the flexible display panel can be stretched and fixed after being stretched.

[0088] In some embodiments, Figure 5 and Figure 6 As shown, a second elastic member 4114 is provided on the connecting frame 411, and the other end of the second elastic member 4114 is connected to the moving frame 412. The second elastic member 4114 has elastic potential energy that drives the moving frame 412 to approach the connecting frame 411, so that the flexible display panel can be restored to its initial state. In this way, the second elastic member 4114 can be used to enable the flexible display panel to have a reset function, so as to be flexibly applicable to different application scenarios. In application, the first elastic member 4132 and the second elastic member 4114 are springs, and the spring has a simple structure and is easy to install.

[0089] In applications, such as Figure 5 and Figure 8 As shown, the first position-limiting assembly 413 further includes a guide shaft 4133, one end of which is connected to the moving frame 412, and the other end of which is connected to the clamping block 4131. Further, the guide shaft 4133 is a telescopic shaft, and under the elastic potential energy of the first elastic member 4132, when the clamping block 4131 moves to the position corresponding to the clamping slot 4110, the clamping block 4131 will be pushed into the clamping slot 4110 by the first elastic member 4132 to achieve position limiting, and the guide shaft 4133 is used to guide, so that the clamping block 4131 can only move along the direction of the guide shaft 4133, thereby ensuring that the clamping block 4131 can smoothly slide into the clamping slot 4110 for position limiting and fixing.

[0090] In some embodiments, Figure 5 and Figure 6 and Figure 8 As shown, the connecting frame 411 includes a connecting section 4111 and a first extending section 4112 and a second extending section 4113 provided at both ends of the connecting section 4111. The connecting section 4111 is connected to one of the two adjacent light emitting modules 100, and the first extending section 4112 and the second extending section 4113 extend toward the other of the two adjacent light emitting modules 100.

[0091] The moving frame 412 is slidably disposed between the first extension section 4112 and the second extension section 4113, and a channel is formed between the first extension section 4112 and the moving frame 412, the block 4131 is located in the channel, and the card slot 4110 is located in the first extension section 4112 and communicates with the channel. In this way, the block 4131 is compressed by the first extension section 4112 and the moving frame 412, and then the first elastic member 4132 is compressed, so that the block 4131 moves in the channel with the moving frame 412.

[0092] In some embodiments, Figure 5 and Figure 6 As shown, the first extension section 4112 is provided with a plurality of slots 4110 spaced apart in the first direction. By providing a plurality of slots 4110, the display panel can be stretched in a plurality of positions in the first direction, which can further enhance the display scene of the display panel and further highlight its flexible characteristics.

[0093] In application, the change of the stretching gear is realized as follows: by stretching the flexible display panel in the first direction, the movable frame 412 and the connecting frame 411 are relatively displaced, that is, the block 4131 moves in the channel until it moves to the position corresponding to the first slot 4110, and is pushed into the slot 4110 by the first elastic member 4132 to achieve the stretching fixation of the first gear. When it is necessary to reset or further stretch, the reset component 414 is required to push the block 4131 out of the first slot 4110. If reset is selected, the display panel can be directly released. If further stretching is required, the pulling force is continued to be applied in the first direction, so that the block 4131 continues to move to the second slot 4110, and is limited and fixed in the slot 4110 when it slides into the slot 4110, so as to achieve the stretching of the second gear. By analogy, multiple gears of stretching can be achieved.

[0094] In some embodiments, Figure 5 and Figure 6 as well as Figure 8As shown, a slot 4110 is provided on one side of the second extension section 4113 close to the mobile frame 412, and a channel is formed between the second extension section 4113 and the mobile frame 412, and a block 4131 is provided on one side of the mobile frame 412 close to the second extension section 4113. In this way, the slot 4110 is provided on both the second extension section 4113 and the first extension section 4112, and the block 4131 is provided at the position of the mobile frame 412 corresponding to the first extension section 4112 and the second extension section 4113. Through the cooperation of the block 4131 and the slot 4110 on both sides, the fixing stability after stretching can be increased, thereby ensuring the normal use of the stretching function of the flexible display panel.

[0095] In some embodiments, Figures 5 to 7 As shown, the reset assembly 414 includes an extruding member 4141, a pushing member 4142 and an airway 4143;

[0096] The extruding member 4141 is movable along the first direction and connected to the side wall of the slot 4110;

[0097] The push member 4142 moves along the second direction and is connected to the top wall of the slot 4110;

[0098] One end of the air channel 4143 is connected to the extrusion member 4141, and the other end of the air channel 4143 is connected to the pushing member 4142;

[0099] One end of the pushing member 4142 is disposed in the airway 4143, and the other end of the pushing member 4142 is used to abut against the block 4131; wherein, when the block 4131 is squeezed onto the squeezing member 4141, the squeezing member 4141 compresses the airway 4143 and increases the pressure in the airway 4143, so as to push the pushing member 4142 to push the block 4131 out of the slot 4110.

[0100] The working principle of the reset assembly 414 is as follows: after the card block 4131 is inserted into the card slot 4110, the movable frame 412 and the connecting frame 411 are continuously pulled, so that the card block 4131 continues to move along the first direction, thereby causing the card block 4131 to apply pressure to the extrusion member 4141 in the first direction, causing the extrusion member 4141 to compress the airway 4143 and increase the pressure in the airway 4143, so as to push the pushing member 4142 to push the card block 4131 out of the card slot 4110.

[0101] In application, the above description is about the situation that the flexible display panel is stretched toward the first direction. When the flexible panel needs to be stretched toward the second direction, the entire stretching mechanism 41 is set corresponding to the second direction. Specifically, the extruding member 4141 moves along the second reverse direction to connect to the side wall of the card slot 4110, and the pushing member 4142 moves along the first direction to connect to the top wall of the card slot 4110, so as to ensure that the flexible display panel can be stretched toward the second direction.

[0102] In some embodiments, Figure 5 , Figure 8 and Fig. 9 As shown, the folding mechanism 42 includes a rotating frame 421 and a second limiting assembly 422;

[0103] One end of the rotating frame 421 is connected to the light emitting module 100, and the other end of the rotating frame 421 is rotatably connected to the moving frame 412;

[0104] The second stopper assembly 422 includes a first stopper 4221 and a second stopper 4222. The first stopper 4221 is arranged on the mobile frame 412 for movement along the first direction, and the second stopper 4222 is arranged on the rotating frame 421. The first stopper 4221 is used to cooperate with the second stopper 4222 to limit the angle relationship between the rotating frame 421 and the mobile frame 412. In this way, the display panel can be folded in the third direction. By rotating the rotating frame 421, a certain angle is formed between the light-emitting modules 100 on both sides, thereby achieving folding and bending, and finally meeting different display requirements.

[0105] In some embodiments, Figure 5 , Figure 8 and Fig. 9 As shown, the first limiting member 4221 includes a fixing portion 42211 and a spring 42212;

[0106] The movable frame 412 is provided with a cavity, and the fixing portion 42211 is movable and installed in the cavity along a first direction;

[0107] One end of the spring 42212 is fixed to the moving frame 412, and the other end of the spring 42212 is connected to an end of the fixing portion 42211 away from the rotating frame 421;

[0108] Among them, the fixing part 42211 is provided with a first latch 42213, the second stopper 4222 includes at least two second latches 42221, and a stopper groove 42220 for the first latch 42213 to be inserted is formed between two adjacent second latches 42221, and the spring 42212 has elastic potential energy for driving the first latch 42213 to move toward the stopper groove 42220. In this way, when the rotating frame 421 rotates, the second latch 42221 located on the rotating frame 421 rotates accordingly, thereby applying pressure to the first latch 42213, so that the first latch 42213 moves toward the first direction. When the first latch 42213 is located in the stopper groove 42220, the folding fixation is achieved, and when the second latch 42221 squeezes the first latch 42213, the folding angle is adjusted, so that the folding-folding fixation can be achieved. By rotating to the rotating frame 421 in the opposite direction, the reset of the flexible display panel can be achieved.

[0109] In some embodiments, Figure 8 and Fig. 9 As shown, the rotating frame 421 includes a fixed end 4211, a rotating end 4212 and a connecting column 4213; the fixed end 4211 is connected to the light emitting module 100; the rotating end 4212 is rotatably connected to the mobile frame 412 through the rotating shaft 4210; and the connecting column 4213 is respectively connected to the fixed end 4211 and the rotating end 4212. The existence of the connecting column 4213 adds redundant space between the rotating end 4212 and the fixed end 4211 to avoid interference between the rotating frame 421 and the mobile frame 412 when the rotating frame 421 rotates.

[0110] In some embodiments, Fig.11 As shown, the connecting frame 411 is provided with a first connecting member 4115 connected to the light emitting module 100, and the fixed end 4211 is provided with a second connecting member 4214 connected to the light emitting module 100. In this way, the installation of the position of the entire connecting structure 40 can be facilitated, and the connecting structure 40 does not need to be arranged in the middle of the two light emitting modules 100, thereby improving the space utilization.

[0111] like Fig.10 As shown, Fig.10 The diagram shows a flexible display panel during stretching. The first connector 4115 on the connecting frame 411 and the second connector 4214 on the rotating frame 421 are respectively used to connect adjacent light-emitting modules 100. By applying a pulling force, relative displacement occurs between the rotating frame 421 and the mobile frame 412, so that the block 4131 moves in the channel until it moves into the card slot 4110 for the first stretching fixation. When further stretching is required, the mobile frame 412 is continuously pulled so that the block 4131 is squeezed onto the squeeze member 4141, thereby generating pressure in the airway 4143, pushing the push member 4142 at the other end of the airway 4143, and finally pushing the block 4131 out of the card slot 4110 for the card connection fit; at this time, the flexible display panel can be rotated to reset or further stretched, and the stretching-stretching-fixing-resetting operations can be easily realized in this cycle.

[0112] like Fig.11 As shown, Fig.11The diagram shows a flexible display panel during stretching and folding. After stretching, the rotating frame 421 is given sufficient rotation space to avoid interference between the mobile frame 412 and the rotating frame 421. Then, the rotating frame 421 is folded and bent so that two adjacent light-emitting modules 100 have a certain angle in the third direction, so as to adapt to different display scenes. Specifically, after stretching and fixing, the rotating frame 421 is rotated so that the second latch 42221 is engaged with the first latch 42213, thereby achieving fixation after folding. When the rotation angle needs to be further adjusted, it only needs to continue to rotate until the first latch 42213 is engaged with the limit groove 42220 between the two second latches 42221.

[0113] An embodiment of the present application further provides a flexible display device, comprising a housing (not shown in the figure) and the flexible display panel as described in the first aspect, wherein the flexible display panel is disposed in the housing.

[0114] The flexible display device provided in the embodiment of the present application is described by taking the OLED display screen as an example. The OLED screen provided in the embodiment of the present application is mainly composed of multiple light-emitting modules (OLED light-emitting units, i.e., pixel units) and a flexible PI layer, and can complete the cycle functions of stretching-fixing-folding-fixing-resetting by embedding the connection structure. The use of flexible PI in the embodiment of the present application is the basis for realizing the stretching & folding of the entire screen, and the functional requirements are completed through the connection structure; the connection structure provided in the embodiment of the present application does not require the use of any complex power (such as a motor, etc.), and is completely completed through the design and assembly of structural parts, and is highly feasible on the ground; the flexible display device provided in the embodiment of the present application is green and environmentally friendly, and is easy to install.

[0115] 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.

[0116] 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 flexible display panel, characterized in that: It comprises a first flexible layer, a flexible supporting layer and a second flexible layer which are stacked in sequence; The first flexible layer is embedded with a light emitting module, at least two of the light emitting modules are provided, and the light emitting modules are located on a side of the flexible supporting layer away from the second flexible layer; A connection structure is provided between the first flexible layer and the second flexible layer, and the connection structure connects two adjacent light-emitting modules; The connection structure includes a stretching mechanism and a folding mechanism, wherein the stretching mechanism is connected to one of the two adjacent light-emitting modules, the folding mechanism is rotationally connected to the stretching mechanism, and the folding mechanism is connected to the other of the two adjacent light-emitting modules; Wherein, the stretching mechanism is used to make the light-emitting modules move away from or approach each other in the first direction and / or the second direction, and the folding mechanism is used to make the flexible display panel fold or bend in the third direction; The stretching mechanism comprises: A connecting frame connected to one of the two adjacent light-emitting modules; a movable frame, one end of which is slidably connected to the connecting frame, and the other end of which is rotatably connected to the folding mechanism; and A first limiting assembly, used to limit the relative position between the connecting frame and the moving frame, the first limiting assembly comprising a clamping block and a clamping slot; A reset component is arranged on the connecting frame, and is used to push the card block out of the card slot, so that the connecting frame and the moving frame are out of the limit position and can move relative to each other; The folding mechanism comprises: A rotating frame, one end of which is connected to the light emitting module, and the other end of which is rotatably connected to the mobile frame; The second limiting component is used to limit the angular relationship between the rotating frame and the moving frame.

2. The flexible display panel according to claim 1, characterized in that: The card block is arranged on the movable frame for movement along the second direction, and the card slot is located on the connecting frame, and the card slot is used for the card block to be inserted into.

3. The flexible display panel according to claim 2, characterized in that: A first elastic member is provided between the card block and the mobile frame, and the first elastic member has elastic potential energy for driving the card block to move away from the mobile frame. When the card block moves to a position corresponding to the card slot, the first elastic member pushes the card block to the card slot to define a relative position between the connecting frame and the mobile frame; And / or, a second elastic member is provided on the connecting frame, the other end of the second elastic member is connected to the movable frame, and the second elastic member has elastic potential energy for driving the movable frame toward the connecting frame so that the flexible display panel returns to an initial state.

4. The flexible display panel according to claim 2, characterized in that: The connecting frame comprises a connecting section and a first extending section and a second extending section provided at both ends of the connecting section, the connecting section is connected to one of the two adjacent light emitting modules, and the first extending section and the second extending section extend toward the other of the two adjacent light emitting modules; The movable frame is slidably disposed between the first extension section and the second extension section, and a channel is formed between the first extension section and the movable frame, the card block is located in the channel, and the card slot is located in the first extension section and communicated with the channel.

5. The flexible display panel according to claim 4, characterized in that: The first extension section is provided with a plurality of the card slots spaced apart in a first direction; And or, the card slot is provided on a side of the second extension section close to the mobile frame, and the channel is formed between the second extension section and the mobile frame, and the card block is provided on a side of the mobile frame close to the second extension section.

6. The flexible display panel according to claim 2, characterized in that: The reset component comprises: An extrusion member, movable along the first direction and connected to the side wall of the slot; A pushing member connected to the top wall of the slot moves along the second direction; and An air channel, one end of which is connected to the extrusion member, and the other end of which is connected to the pushing member; One end of the pushing member is arranged in the airway, and the other end of the pushing member is used to abut against the card block; wherein, when the card block squeezes the squeezing member, the squeezing member compresses the airway and increases the pressure in the airway to push the pushing member to push the card block out of the card slot.

7. The flexible display panel according to any one of claims 1 to 6, characterized in that: The second limiting component includes a first limiting member and a second limiting member, the first limiting member is movably arranged on the movable frame along a first direction, the second limiting member is arranged on the rotating frame, and the first limiting member is used to cooperate with the second limiting member to limit the angular relationship between the rotating frame and the movable frame.

8. The flexible display panel according to claim 7, characterized in that: The first limiting member comprises: A fixing part, the movable frame is provided with a cavity, and the fixing part is installed in the cavity by moving along a first direction; A spring, one end of which is fixed to the movable frame, and the other end of which is connected to an end of the fixed portion away from the rotating frame; Among them, the fixing part is provided with a first latching tooth, the second limiting member includes at least two second latching teeth, a limiting groove for the first latching tooth to be engaged is formed between two adjacent second latching teeth, and the spring has elastic potential energy for driving the first latching tooth to move toward the limiting groove.

9. The flexible display panel according to claim 7, characterized in that: The rotating frame comprises: A fixed end connected to the light emitting module; A rotating end, rotatably connected to the moving frame via a rotating shaft; and A connecting column connects the fixed end and the rotating end respectively.

10. A flexible display device, characterized in that: include: case; The flexible display panel according to any one of claims 1 to 9, wherein the flexible display panel is disposed in the housing.

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