Flexible display device

Abstract

The present application provides a flexible display device, which includes: a flexible display module; a support assembly, which includes a first support mechanism and a second support mechanism that are relatively arranged, and the first support mechanism and the second support mechanism are used to slide relative to each other to provide a support surface with a variable area for the flexible display module, and a limit assembly, which includes a limit rotor and a limit slot, the limit rotor is rotatably connected to the first support mechanism, the limit slot is arranged on the second support mechanism, and when the area of ​​the support surface is a predetermined area, the limit rotor is clamped in the limit slot. The flexible display device is clamped in the limit slot by the limit rotor to stably fix the first support mechanism and the second support mechanism when providing the predetermined area.

Description

Technical Field

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

[0002] The application market of flexible display devices is becoming more and more popular in the market. Flexible screen mobile phones refer to mobile phones with bendable and flexible screens. Compared with traditional screens, flexible screens have obvious advantages. They are not only thinner and lighter in size, but also have lower power consumption than traditional light-emitting devices, which helps to improve the battery life of the device. At the same time, based on its bendability and flexibility, its durability is much higher than that of traditional screens, reducing the probability of accidental damage to flexible display devices. In addition to external folding and internal folding, there are many other ways to unfold the flexible screen, among which the curling and telescopic unfolding method is one of them. It is difficult to fix the flexible display screen in a predetermined position during the curling and telescoping process so that the flexible display screen can stay.

[0003] Therefore, it is necessary to propose a technical solution to provide a rolled flexible display device that can stay at a predetermined position. Summary of the invention

[0004] The purpose of the present application is to provide a flexible display device, which can stably fix the flexible display device when the area of ​​the supporting surface is a preset area.

[0005] To achieve the above object, the present application provides a flexible display device, the flexible display device comprising:

[0006] Flexible display module;

[0007] a supporting assembly, the supporting assembly comprising a first supporting mechanism and a second supporting mechanism arranged opposite to each other, the first supporting mechanism and the second supporting mechanism being used for relative sliding to provide a supporting surface with a variable area for the flexible display module, and

[0008] The limiting assembly includes a limiting rotor and a limiting slot, wherein the limiting rotor is rotatably connected to the first supporting mechanism, and the limiting slot is arranged on the second supporting mechanism. When the area of ​​the supporting surface is a predetermined area, the limiting rotor is clamped in the limiting slot.

[0009] In the above-mentioned flexible display device, the limiting assembly further includes a slide groove provided on the second supporting mechanism, and when the first supporting mechanism and the second supporting mechanism slide relatively, the limiting rotor slides along the slide groove.

[0010] In the above-mentioned flexible display device, the limiting assembly further includes a rotation auxiliary member arranged on the second supporting mechanism and arranged corresponding to the slide groove, the slide groove and the limiting groove are located on the same end surface of the second supporting mechanism and are arranged correspondingly,

[0011] The limiting rotor is used to move relative to the rotation auxiliary member according to a preset trajectory and stop at the rotation auxiliary member when in the second state, so as to rotate 90 degrees in the first direction from the second state to the first state.

[0012] Wherein, when the limiting rotor is engaged with the limiting groove, the limiting rotor is in the first state;

[0013] When the limiting rotor slides along the sliding groove, the limiting rotor is in the second state.

[0014] In the above-mentioned flexible display device, the limiting rotor is used to rotate in the first direction to a first transition state when in the second state and abutting against the rotation auxiliary member;

[0015] The limiting rotor is also used to rotate in the first direction to a second transition state under the action of inertia force when in the first transition state;

[0016] The limiting rotor is further configured to rotate in the first direction to the first state when in the second transition state and abutting against the rotation auxiliary component.

[0017] In the above-mentioned flexible display device, the limiting rotor has a first end and a second end opposite to each other, and the limiting rotor also has a third end and a fourth end opposite to each other, the third end is connected between the first end and the second end, and the fourth end is connected between the first end and the second end, the first end and the second end opposite to each other of the limiting rotor are both clamping ends, and the third end and the fourth end opposite to each other of the limiting rotor are both sliding ends;

[0018] When the limiting rotor is clamped in the limiting groove, the first end or the second end of the limiting rotor is clamped in the limiting groove;

[0019] When the limiting rotor is in the second state, the third end or the fourth end of the limiting rotor is located in the slide groove;

[0020] When the limiting rotor is in the first transition state and the second transition state, the interface between the clamping end and the sliding end of the limiting rotor contacts the sliding groove.

[0021] In the above-mentioned flexible display device, the rotation auxiliary member is arranged on the second end face of the second supporting mechanism, the slide groove is arranged on the first end face of the second supporting mechanism, the first end face and the second end face are perpendicular to each other, and the limiting groove is located at one end of the slide groove close to the rotation auxiliary member.

[0022] In the above flexible display device, the first end surface is located on the back side of the supporting surface and is parallel to the supporting surface, and the second end surface is located on the back side of the supporting surface and is perpendicular to the supporting surface.

[0023] In the above flexible display device, the predetermined area corresponds to the maximum area of ​​the supporting surface.

[0024] In the above flexible display device, the rotation auxiliary member includes a V-shaped protrusion, the limiting rotor includes a V-shaped groove, and the angle of the top angle of the V-shaped protrusion is different from the angle of the top angle of the V-shaped groove.

[0025] In the above flexible display device, the angle of the top angle of the V-shaped protrusion is smaller than the angle of the top angle of the V-shaped groove.

[0026] In the above-mentioned flexible display device, the first support mechanism includes a plurality of first support plates, the second support mechanism includes a plurality of second support plates, each second support plate is located between two adjacent first support plates, and the first support plates and the second support plates are engaged with each other in a direction perpendicular to the support surface.

[0027] In the above flexible display device, the longitudinal section of the first support plate is one of a T-shape and an inverted T-shape, and the longitudinal section of the second support plate is the other of a T-shape and an inverted T-shape.

[0028] In the above flexible display device, the longitudinal section of the first support plate is an inverted T-shape, and the longitudinal section of the second support plate is a T-shape.

[0029] The surface of the second supporting mechanism close to the supporting surface is provided with a plurality of convex strips, a gap is provided between two adjacent convex strips, the first supporting plate is provided on two adjacent convex strips, the second supporting plate is provided in the gap, and the gap between two adjacent convex strips on which the first supporting plate is provided is adjacent to the gap on which the second supporting plate is provided.

[0030] In the above-mentioned flexible display device, the flexible display device further includes a winding assembly, the winding assembly is fixedly connected to the first supporting mechanism, the flexible display module includes a protective cover plate,

[0031] The first end of the protective cover is fixed to the winding assembly, the second end of the protective cover is fixed to the second supporting mechanism, and the first end and the second end of the protective cover are opposite to each other.

[0032] In the above-mentioned flexible display device, the protective cover plate includes a stretch-resistant layer, and the material for preparing the stretch-resistant layer is selected from transparent polyimide or polyethylene terephthalate.

[0033] In the above-mentioned flexible display device, the flexible display device also includes a one-way damping mechanism, the winding assembly includes a reel and a spring mechanism, the spring mechanism is connected to the first end of the reel and is used to apply a driving force to the reel to rotate in a second direction, the one-way damping mechanism is connected to the second end of the reel and is used to apply a resistance to the reel to rotate in the second direction, and the first end of the reel and the second end of the reel are opposite to each other.

[0034] In the above-mentioned flexible display device, the winding assembly also includes a reel, the reel has a accommodating cavity, the reel is arranged in the accommodating cavity of the reel, the spring mechanism includes a spring and a first end cover, one end of the spring is connected to the reel, the other end of the spring is connected to the first end cover, and the first end cover is fixedly connected to the reel.

[0035] Beneficial effects: The present application provides a flexible display device, which includes: a flexible display module; a support assembly, which includes a first support mechanism and a second support mechanism that are relatively arranged, and the first support mechanism and the second support mechanism are used to slide relative to each other to provide a support surface with a variable area for the flexible display module, and a limiting assembly, which includes a limiting rotor and a limiting groove, the limiting rotor is rotatably connected to the first support mechanism, the limiting groove is arranged on the second support mechanism, and when the area of ​​the support surface is a predetermined area, the limiting rotor is in a first state and is clamped in the limiting groove. The flexible display device is clamped in the limiting groove by the limiting rotor to stably fix the first support mechanism and the second support mechanism when providing the predetermined area. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of a viewing angle when the flexible display device of the present application is in a fully rolled-up state;

[0037] Figure 2 for Figure 1 A schematic diagram of another viewing angle when the flexible display device is in a fully rolled-up state;

[0038] Figure 3 for Figure 1 A first schematic diagram of the flexible display device shown in a partially rolled-up state;

[0039] Figure 4 for Figure 1 A second schematic diagram of a viewing angle when the flexible display device is in a partially rolled-up state;

[0040] Figure 5 for Figure 4 A schematic diagram of another viewing angle when the flexible display device is in a partially rolled-up state;

[0041] Figure 6 for Figure 1 A schematic diagram of the flexible display device shown in a fully unfolded state;

[0042] Figure 7 is a third schematic diagram of the flexible display device in a partially rolled-up state;

[0043] Figure 8 For along Figure 7 A schematic cross-sectional view of the AA section of the flexible display device shown;

[0044] Fig. 9 For along Figure 7 A schematic cross-sectional view of the BB section of the flexible display device shown;

[0045] Fig.10 This is a schematic diagram of a flexible display module according to an embodiment of the present application;

[0046] Fig.11 A schematic diagram of a rolling assembly and a one-way damping mechanism of a flexible display device according to an embodiment of the present application;

[0047] Fig.12 This is a schematic diagram of a process in which a limiting rotor of a flexible display device according to an embodiment of the present application rotates from a second state to a first state.

[0048] The attached diagram is as follows:

[0049] 100 flexible display device; 100a support surface; 10 flexible display module; 101 rear cover; 102 flexible organic light emitting diode display panel; 103 polarizer; 104 protective cover; 20 winding assembly; 201 reel; 202 reel; 202a first groove; 2021 first connecting portion; 202b second groove; 202c connecting hole; 2031 coil spring; 2032 first end cap; 2033 bearing; 30 supporting assembly; 301 first supporting mechanism; 3011 first supporting plate; 30111 first vertical Straight portion; 30112 first lateral portion; 3012 second connecting portion; 302 second supporting mechanism; 3021 second supporting plate; 30211 second vertical portion; 30212 second lateral portion; 3022 supporting body; 3023 convex strip; 302a gap; 302b first end face; 302c second end face; 40 one-way damping mechanism; 401 one-way damper body; 402 rotating portion; 403 second end cover; 50 limiting assembly; 501 limiting rotor; 502 rotating auxiliary member; 50a limiting groove; 50b slide groove. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0051] See also Figure 1-Figure 12 , Figure 1 This is a schematic diagram of a viewing angle when the flexible display device of the present application is in a fully rolled-up state. Figure 2 for Figure 1 The flexible display device is shown in another viewing angle when it is in a fully rolled-up state. Figure 3 for Figure 1 The first schematic diagram of the flexible display device in a partially rolled-up state is shown. Figure 4 for Figure 1 A second schematic diagram of a viewing angle when the flexible display device is in a partially rolled-up state, Figure 5 for Figure 4 A schematic diagram of another viewing angle when the flexible display device is in a partially rolled-up state is shown. Figure 6 for Figure 1 The flexible display device is in a fully unfolded state. Figure 7 is a third schematic diagram of a flexible display device in a partially rolled-up state. Figure 8 For along Figure 7 A schematic cross-sectional view of the AA section of the flexible display device shown, Fig. 9 For along Figure 7A schematic cross-sectional view of the BB section of the flexible display device shown, Fig.10 is a schematic diagram of a flexible display module according to an embodiment of the present application, Fig.11 Schematic diagram of a rolling assembly and a one-way damping mechanism of a flexible display device according to an embodiment of the present application. Fig.12 This is a schematic diagram of a process in which a limiting rotor of a flexible display device according to an embodiment of the present application rotates from a second state to a first state.

[0052] The present application provides a flexible display device, which is a rollable display device. The flexible display device 100 includes a flexible display module 10 , a rolling assembly 20 , a supporting assembly 30 , a one-way damping mechanism 40 and a limiting assembly 50 .

[0053] The flexible display module 10 is used to display images. The flexible display module 10 is used to switch the display surface size by winding and unfolding. When the flexible display device 100 is in a fully rolled-up state, the area of ​​the display surface of the flexible display module 10 in the unfolded state is the smallest, and the flexible display device 100 can be used as a mobile phone. When the flexible display device 100 is in a partially rolled-up state, the area of ​​the display surface of the flexible display module 10 in the unfolded state increases. When the flexible display device 100 is in a fully unfolded state, the area of ​​the display surface of the flexible display module 10 in the unfolded state is the largest. When the flexible display device 10 is in a partially rolled-up state and a fully unfolded state, the flexible display device 10 can be used as a tablet computer or a laptop computer.

[0054] like Fig.10 As shown, the flexible display module 10 includes a back cover 101, a flexible organic light emitting diode display panel 102, a polarizer 103 and a protective cover 104 stacked in sequence. Any adjacent two of the back cover 101, the flexible organic light emitting diode display panel 102, the polarizer 103 and the protective cover 104 are connected by a transparent adhesive layer.

[0055] In this embodiment, the length of the protective cover 104 is greater than the length of the flexible organic light-emitting diode display panel 102, one end of the protective cover 104 is fixed to the winding assembly 20, and the other end of the protective cover 104 is fixed to the second support mechanism to provide a stretching layer for the winding and unfolding of the flexible display module 10. Specifically, one end of the protective cover 104 is attached to or locked on the inner surface of the second support mechanism 302 (middle frame box), and the other end of the protective cover 104 is attached to or fixed on the reel. As the outermost layer of the flexible display module 10, the protective cover 104 is in a tensioned state under the action of external force, providing the flexible display module 10 with a display surface with good flatness, and the hardness of the protective cover 104 is correspondingly improved. If the protective cover 104 is damaged during the use of the flexible display device 10, the protective cover 104 is more convenient to replace. Using the protective cover plate 104 as the stretching layer can avoid damage to key functional layers such as the flexible organic light-emitting diode display panel 102, thereby improving the service life of the flexible display device 100. Compared with using multiple film layers of the flexible display module 10 as the stretching layer, it can avoid the peeling between the film layers caused by the deformation difference during the film winding process.

[0056] In the present embodiment, the protective cover plate 104 includes a stretch-resistant layer. The stretch-resistant layer is made of an optical-grade stretch-resistant material, such as clear polyimide (CPI) or polyethyleneterephthalate (PET). The protective cover plate 104 also includes a hardening layer, which is formed by the inside of the protective cover plate 104 to improve the hardness of the protective cover plate 104. The hardening layer may be an inorganic layer, such as a silicon nitride layer or a silicon oxide layer; the hardening layer may also be an organic layer, such as an organosilicon layer. The hardening layer 104 is disposed on the portion of the protective cover plate 104 corresponding to the display area to improve the protection of the display surface of the flexible display device.

[0057] In this embodiment, the support assembly 30 includes a first support mechanism 301 and a second support mechanism 302 that are arranged opposite to each other. The first support mechanism 301 and the second support mechanism 302 are arranged opposite to each other.

[0058] The first support mechanism 301 and the second support mechanism 302 are used to slide relative to each other to provide a support surface 100a with a variable area for the flexible display module 10. When the first support mechanism 301 and the second support mechanism 302 slide toward each other, the area of ​​the support surface 100a decreases, and correspondingly, the flexible display module 10 is rolled up so that the display surface decreases; when the first support mechanism 301 and the second support mechanism 302 slide back to back, the area of ​​the support surface 100a increases, and correspondingly, the flexible display module 10 is unfolded so that the display surface increases. When the flexible display device 100 is in a fully rolled-up state, the area of ​​the support surface 100a is the smallest, such as Figure 1 When the flexible display device is in a fully unfolded state, the area of ​​the support surface 100a is the largest. Figure 6 shown.

[0059] The first support mechanism 301 is in a comb-tooth shape. The first support mechanism 301 includes a plurality of first support plates 3011, and the gaps between any two adjacent first support plates 3011 are equal. The second support mechanism 302 includes a plurality of second support plates 3021, and the spacing between any two adjacent second support plates 3021 is equal. Each second support plate 3021 is located between two adjacent first support plates 3011. The first support plate 3011 and the second support plate 3021 are engaged with each other in a direction perpendicular to the support surface 100a, so as to limit the first support plate 3011 and the second support plate 3021 in a direction perpendicular to the support surface 100a, so as to avoid relative movement of the first support plate 3011 and the second support plate 3021 in a direction perpendicular to the support surface 100a, which causes the support surface 100a to be uneven and causes the flexible display module 10 to have an uneven display.

[0060] In this embodiment, the longitudinal section of the first support plate 3011 is T-shaped or inverted T-shaped, and the longitudinal section of the second support plate 3021 is T-shaped or the other of inverted T-shaped, so that the first support plate 3011 and the second support plate 3021 are engaged with each other in a direction perpendicular to the support surface 100a.

[0061] Specifically, Figure 8 As shown, the longitudinal section of the first support plate 3011 is an inverted T-shaped, and the longitudinal section of the second support plate 3021 is a T-shaped. The first support plate 3011 includes a first vertical portion 30111 and a first horizontal portion 30112 perpendicular to the first vertical portion 30111, and the first vertical portion 30111 is located in the middle of the first horizontal portion 30112. The second support plate 3021 includes a second vertical portion 30211 and a second horizontal portion 30212 perpendicular to the second vertical portion 30211, and the second vertical portion 30211 is located in the middle of the second horizontal portion 30212. The first horizontal portion 30112 of the first support plate 3011 and the second horizontal portion 30212 of the second support plate 3021 are engaged with each other. The first vertical portion 30111 of the first support plate 3011 and the second horizontal portion 30212 of the second support plate 3012 constitute a support surface 100a.

[0062] The second support mechanism 302 also includes a support body 3022, which is in the shape of a plate. A plurality of ridges 3023 are provided on the surface of the second support mechanism 302 close to the support surface 100a, and a gap 302a is provided between two adjacent ridges 3023. The first support plate 3011 is provided on part of two adjacent ridges 3023, and each first support plate 3011 slides along the two ridges 3023. The second support plate 3021 is provided in part of the gap 302a, and each second support plate 3021 slides along the inner wall enclosing the gap 302a. The gap between the two adjacent ridges 3023 where the first support plate 3011 is provided is adjacent to the gap where the second support plate 3021 is provided. There is a gap between the first support plate 3011 and a part of the surface of the second support mechanism 302 close to the support surface 100a, so as to reduce the friction force of the first support plate 3011 during the sliding process, and the first support plate 3011 slides more smoothly. Specifically, the first transverse portion 30112 of the first support plate 3011 is disposed on two adjacent convex strips 3023 , and the second vertical portion 30211 of the second support plate 3021 is disposed in the gap 302 a .

[0063] The width of the first vertical portion 30111 of the first support plate 3011 is equal to the width of the second horizontal portion 30212 of the second support plate 3021. The width of the second vertical portion 30211 of the second support plate 3021 is equal to the width of the gap 302a, and the width of the first horizontal portion 30112 of the first support plate 3011 is equal to the sum of the width of the gap 302a and the width of the two ridges 3023.

[0064] The winding assembly 20 includes a reel 201, a reel 202, and a spring mechanism. The reel 201 has a receiving cavity, and the reel 202 is arranged in the receiving cavity of the reel 201. The spring mechanism is connected to the first end of the reel 202 and is used to apply a driving force to the reel 202 to rotate in the second direction. The one-way damping mechanism 40 is connected to the second end of the reel 202 and is used to apply a resistance to the reel 202 to rotate in the second direction. The first end of the reel 202 and the second end of the reel 202 are opposite to each other, so that the flexible display device 100 can stay on any support surface 100a provided by the first support mechanism 301 and the second support mechanism 302, and the flexible display module 10 is in the corresponding display surface, so that the flexible display device 100 can stay at any position to adapt to different display screen application scenarios. Among them, the second direction can be clockwise or counterclockwise.

[0065] The first end of the reel 202 is provided with a first groove 202a and a first connection portion 2021 disposed in the first groove 202a and located on the rotation center axis CC of the reel 202. The second end of the reel 202 is provided with a second groove 202b and a connection hole 202c located on the rotation center axis CC of the reel 202.

[0066] The coil spring mechanism includes a coil spring 2031, a first end cover 2032 and a bearing 2033. One end of the coil spring 2031 is connected to the first connection portion 2021 of the reel 202, and the other end of the coil spring 2031 is connected to the first end cover 2032, and the coil spring 2031 is received in the first groove 202a. The bearing 2033 is sleeved on the end of the first connection portion 2021 close to the first end cover 2032. The first end cover 2032 is fixed on the reel 201. The coil spring is used to generate a winding torque.

[0067] The one-way damping mechanism 40 includes a one-way damper body 401, a rotating part 402 and a second end cover 403. One end of the rotating part 402 is connected to the one-way damper body 401, and the other end of the rotating part 402 is clamped in the connecting hole 202c. The one-way damper body 401 is located in the second groove 202b. The one-way damper body 401 is connected to the second end cover 403, and the second end cover 403 is fixed on the reel 201. The resistance value of the one-way damping mechanism is adjusted or selected to be equal to the sum of the winding torsion of the coil spring and the friction force, wherein the friction force includes the friction force between the coil spring and the bearing and the friction force between the first support mechanism and the second support mechanism.

[0068] The one-way damper body 401 includes a housing, a one-way needle bearing, a damping rotor, etc. The one-way needle bearing is connected to the rotating part 402, the damping rotor is connected to the one-way needle bearing, the damping oil is filled in the housing, and the one-way needle bearing and the damping rotor are located in the housing. The resistance generated by the one-way damping mechanism 40 is adjusted by matching the one-way needle bearing with the damping oil. Since the damping oil is formulated with special silicone oil, the damping rotor will generate torque when it contacts the damping oil when it rotates, and the torque is transmitted to the one-way needle bearing. The magnitude of the resistance generated by the one-way damping mechanism 40 is determined by the viscosity of the damping oil and the contact area between the damping oil and the damping rotor. The higher the viscosity of the damping oil and the larger the contact area between the damping oil and the damping rotor, the greater the resistance generated by the one-way damper 40. On the contrary, the lower the viscosity of the damping oil and the smaller the contact area between the damping oil and the damping rotor, the smaller the resistance generated by the one-way damper 40.

[0069] When the area of ​​the supporting surface 100a is a predetermined area, the limiting component 50 enables a hardware-fixed connection between the first supporting mechanism 301 and the second supporting mechanism 302 to prevent the first supporting mechanism 301 and the second supporting mechanism 302 from sliding when the area of ​​the supporting surface 100a is the predetermined area, so that the flexible display module displays on the corresponding fixed display surface.

[0070] The limiting assembly 50 includes a limiting rotor 501 , a limiting groove 50 a , a sliding groove 50 b and a rotation auxiliary component 502 .

[0071] The limiting rotor 501 is rotatably connected to the first supporting mechanism 301. A second connecting portion 3012 is provided on the first supporting plate 3011 on one side of the first supporting mechanism 301. The second connecting portion 3012 is located at one end of the first supporting mechanism 301 close to the second supporting mechanism 302. The limiting rotor 501 is connected to the second connecting portion 3012 through a rotor rivet column.

[0072] The limiting rotor 501 has a first end and a second end opposite to each other, and further has a third end and a fourth end opposite to each other, the third end is connected between the first end and the second end, and the fourth end is connected between the first end and the second end, the first end and the second end opposite to each other of the limiting rotor 501 are clamping ends, and the third end and the fourth end opposite to each other of the limiting rotor 501 are both sliding ends. The limiting rotor 501 needs to rotate 90 degrees from the clamping end to the sliding end.

[0073] The limiting groove 50a is provided on the second supporting mechanism 302. When the area of ​​the supporting surface 100a is a predetermined area, the limiting rotor 501 is engaged with the limiting groove 50a, so that the first supporting mechanism 301 and the second supporting mechanism 302 are firmly fixed through the cooperation between the limiting rotor 501 and the limiting groove 50a. When the limiting rotor 501 is engaged with the limiting groove 50a, the limiting rotor 501 is in the first state. The limiting rotor in the first state means that the working end of the limiting rotor 501 is the engaging end. When the limiting rotor 501 is engaged with the limiting groove 50a, the first end or the second end of the limiting rotor 501 is engaged with the limiting groove 50b.

[0074] The slide groove 50b is provided on the second supporting mechanism 302. When the first supporting mechanism 301 and the second supporting mechanism slide relative to each other, the limiting rotor 501 slides along the slide groove 50b. When the limiting rotor 501 slides along the slide groove 50b, the limiting rotor is in the second state. The limiting rotor 501 in the second state means that the working end of the limiting rotor 501 is the sliding end. When the limiting rotor is in the second state, the third end or the fourth end of the limiting rotor is located in the slide groove.

[0075] The limiting rotor 501 is used to switch between the first state and the second state by rotating (for example, 90 degrees) to adapt to the relative sliding and fixed states between the first supporting mechanism 301 and the second supporting mechanism 302 .

[0076] The rotation auxiliary member 502 is disposed on the second supporting mechanism 302 and is disposed corresponding to the sliding groove 50 b . The sliding groove 50 b and the limiting groove 50 a are located on the same end surface of the second supporting mechanism 302 and are disposed correspondingly.

[0077] Specifically, the rotation auxiliary member 502 is disposed on the second end surface 302c of the second supporting mechanism 302, and the slide groove 50b is disposed on the first end surface 302b of the second supporting mechanism 302, and the first end surface 302b and the second end surface 302c are perpendicular to each other. The first end surface 302b is located on the back of the supporting surface 100a and is parallel to the supporting surface 100a, and the second end surface 302c is located on the back of the supporting surface 100a and is perpendicular to the supporting surface 100a. The first end surface 302b is the surface of the supporting body 3022 away from the supporting surface 100a. The second end surface 302c is the inner surface of the side plate of the second supporting mechanism 302 close to the first supporting mechanism 301. The rotation auxiliary member 502 and the second connecting portion 3012 are located on the same side of the flexible display device 100. The slide groove 50b is located on the edge of the second supporting mechanism 302 close to the second connecting portion 3012.

[0078] In this embodiment, the predetermined area corresponds to the maximum area of ​​the support surface 100a to prevent the first support mechanism 301 and the second support mechanism 302 from being separated when they slide to the maximum of the support surface 100a and to fix the first support mechanism 301 and the second support mechanism 302.

[0079] In this embodiment, the rotation auxiliary member 502 includes a V-shaped protrusion, and the limiting rotor 501 includes a V-shaped groove. The angle of the top angle of the V-shaped protrusion is different from the angle of the top angle of the V-shaped groove, so that the rotation auxiliary member 502 plays a role in assisting the rotation of the limiting rotor 501. When the V-shaped groove of the limiting rotor 501 stops at the V-shaped protrusion of the rotation auxiliary member 502, the limiting rotor 501 rotates by a preset angle, and the preset angle is less than 90 degrees, so as to avoid the limiting rotor 501 being stuck on the rotation auxiliary member 502 and unable to rotate when the angle of the top angle of the V-shaped protrusion is equal to the angle of the top angle of the V-shaped groove. The end face of the limiting rotor 501 with the V-shaped groove is the clamping end, and the two end faces adjacent to the limiting end are the sliding ends, and the sliding ends are planes.

[0080] Furthermore, the top angle of the V-shaped protrusion is smaller than the top angle of the V-shaped groove. For example, the top angle of the V-shaped protrusion is an acute angle, and the top angle of the V-shaped groove is an obtuse angle, so that the limiting rotor 501 is easier to rotate when it stops at the rotation auxiliary component 502.

[0081] When the limiting rotor 501 is in the second state, it moves relative to the rotation auxiliary member along a preset trajectory and stops at the rotation auxiliary member 502, so as to rotate 90 degrees in the first direction from the second state to the first state.

[0082] The following describes the rotation of the limiting rotor from the second state to the first state by 90 degrees in the first direction, taking the first supporting mechanism 301 as being stationary and the second supporting mechanism 302 as moving as an example.

[0083] The second supporting mechanism 302 moves away from the first supporting mechanism 301, and the limiting rotor 501 is used to make the sliding end slide along the slide groove 50b, and the limiting rotor 501 stops at the rotation auxiliary member 502. Fig.12 (A) shown.

[0084] The second support mechanism 302 continues to move away from the first support mechanism 301, and the limiting rotor 501 is used to rotate in the first direction to the first transition state when it is in the second state and stops at the rotation auxiliary member 502. When the limiting rotor 501 stops at the rotation auxiliary member 502, the clamping end of the limiting rotor 501 stops at the rotation auxiliary member 502, and the clamping end of the limiting rotor 501 rotates to the first transition state under the action of the collision force with the rotation auxiliary member 502. The angle of rotation from the second state to the first transition state is less than 90 degrees, and the first direction is clockwise. Fig.12 When the limiting rotor 501 is in the first transition state, the interface between the clamping end and the sliding end of the limiting rotor 501 contacts the slide groove 50b.

[0085] The second supporting mechanism 302 moves toward the direction of the first supporting mechanism 301, and the limiting rotor 501 is also used to slide along the slide groove 50b when in the first transition state, that is, the interface between the clamping end and the sliding end of the limiting rotor 501 moves along the slide groove 50b. Fig.12 (C) shown.

[0086] The second supporting mechanism 302 continues to move toward the direction of the first supporting mechanism 301, and the limiting rotor 501 is also used to rotate in the first direction to the second transition state under the action of the inertia force when in the first transition state, such as Fig.12 (D) As shown in FIG. 1 , the rotation angle of the limiting rotor 501 when rotating from the first transition state to the second transition state is less than 90 degrees. During the process of the limiting rotor 501 rotating from the first transition state to the second transition state, the interface between the clamping end and the sliding end of the limiting rotor 501 moves along the slide groove 50b.

[0087] When the rotation auxiliary member 502 is a certain distance away from the limiting rotor 501, the second supporting mechanism 302 moves in a direction away from the first supporting mechanism 301, and the rotation auxiliary member 502 stops at the sliding end of the limiting rotor 501. Fig.12 (E) as shown.

[0088] The second support mechanism 302 continues to move in the direction away from the first support mechanism 301, and the limiting rotor 501 is also used to rotate in the first direction to the first state when it is in the second transition state and stops at the rotation auxiliary member 502. Under the impact force applied by the rotation auxiliary member 502, the sliding end of the limiting rotor 501 rotates from the second transition state to the first state. Since the limiting groove 50a is arranged close to the rotation auxiliary member 502, the clamping end of the limiting rotor 501 is clamped in the limiting groove 50a. Fig.12 (F) shown.

[0089] The second supporting mechanism 302 moves toward the first supporting mechanism 301, and the distance between the rotation auxiliary member 502 and the limiting rotor 501 increases. Fig.12 (G) shown.

[0090] The second supporting mechanism 302 continues to move toward the first supporting mechanism 301, and the limiting rotor 501 rotates 90 degrees from the first state to the second state and moves along the slide groove 50b. Fig.12 (H) The limited rotor can automatically turn to release the limit.

[0091] The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technical personnel in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A flexible display device, characterized in that: include: Flexible display module; A support assembly, the support assembly comprising a first support mechanism and a second support mechanism arranged opposite to each other, the first support mechanism and the second support mechanism being used for relative sliding to provide a support surface with a variable area for the flexible display module, the first support mechanism comprising a plurality of first support plates, the second support mechanism comprising a plurality of second support plates, each of the second support plates being located between two adjacent first support plates; and A limiting assembly, the limiting assembly comprising a limiting rotor, a limiting groove and a sliding groove, the limiting rotor being rotatably connected to the first supporting mechanism, the limiting rotor having a first end and a second end opposite to each other and a third end and a fourth end opposite to each other, the third end and the fourth end of the limiting rotor being connected between the first end and the second end of the limiting rotor, the first end and the second end of the limiting rotor being both clamping ends, the third end and the fourth end of the limiting rotor being both sliding ends, and the limiting groove and the sliding groove being arranged on the second supporting mechanism; When the area of ​​the supporting surface is a predetermined area, the first end or the second end of the limiting rotor is clamped in the limiting groove; When the first supporting mechanism and the second supporting mechanism slide relatively, the third end or the fourth end of the limiting rotor slides along the sliding groove.

2. The flexible display device according to claim 1, characterized in that: The sliding groove and the limiting groove are located on the same end surface of the second supporting mechanism and are adjacent to each other.

3. The flexible display device according to claim 1 or 2, characterized in that: When the first end or the second end of the limiting rotor is clamped in the limiting groove, the limiting rotor is in a first state; when the third end or the fourth end of the limiting rotor slides along the sliding groove, the limiting rotor is in a second state; The limiting assembly also includes a rotation auxiliary part, which is arranged on the second supporting mechanism and corresponds to the slide groove. The limiting rotor is also used to move relative to the rotation auxiliary part according to a preset trajectory and stop at the rotation auxiliary part when in the second state, so as to rotate 90 degrees in the first direction from the second state to the first state.

4. The flexible display device according to claim 3, characterized in that: The limiting rotor is used to rotate in the first direction to a first transition state when it is in the second state and stops at the rotation auxiliary member; The limiting rotor is also used to rotate in the first direction to a second transition state under the action of inertia force when in the first transition state; The limiting rotor is further configured to rotate in the first direction to the first state when in the second transition state and abutting against the rotation auxiliary component.

5. The flexible display device according to claim 4, characterized in that: When the limiting rotor is in the first transition state and the second transition state, an interface between one of the opposite first and second ends of the limiting rotor and one of the opposite third and fourth ends contacts the slide groove.

6. The flexible display device according to claim 3, characterized in that: The rotation auxiliary component is arranged on the second end face of the second supporting mechanism, the slide groove is arranged on the first end face of the second supporting mechanism, the first end face and the second end face of the second supporting mechanism are perpendicular to each other, and the limiting groove is located at one end of the slide groove close to the rotation auxiliary component.

7. The flexible display device according to claim 6, characterized in that: The first end surface of the second supporting mechanism is located at the back of the supporting surface and is parallel to the supporting surface, and the second end surface of the second supporting mechanism is located at the back of the supporting surface and is perpendicular to the supporting surface.

8. The flexible display device according to claim 1 or 6, characterized in that: The predetermined area corresponds to the maximum area of ​​the supporting surface.

9. The flexible display device according to claim 3, characterized in that: The rotation auxiliary member includes a V-shaped protrusion, and the first end and the second end of the limiting rotor include a V-shaped groove, and the angle of the top angle of the V-shaped protrusion is different from the angle of the top angle of the V-shaped groove.

10. The flexible display device according to claim 9, characterized in that: The angle of the top angle of the V-shaped protrusion is smaller than the angle of the top angle of the V-shaped groove.

11. The flexible display device according to claim 1, characterized in that: The first support plate and the second support plate engage with each other in a direction perpendicular to the support surface.

12. The flexible display device according to claim 11, characterized in that: The longitudinal section of the first support plate is one of a T-shape and an inverted T-shape, and the longitudinal section of the second support plate is the other of a T-shape and an inverted T-shape.

13. The flexible display device according to claim 11 or 12, characterized in that: The longitudinal section of the first support plate is an inverted T-shape, and the longitudinal section of the second support plate is a T-shape. The surface of the second supporting mechanism close to the supporting surface is provided with a plurality of convex strips, a gap is provided between two adjacent convex strips, the first supporting plate is provided on part of the two adjacent convex strips, the second supporting plate is provided in part of the gap, and the gap between the two adjacent convex strips on which the first supporting plate is provided is adjacent to the gap on which the second supporting plate is provided.

14. The flexible display device according to claim 1, characterized in that: The flexible display device also includes a winding assembly, which is fixedly connected to the first supporting mechanism. The flexible display module includes a protective cover plate, which has a first end and a second end opposite to each other. The first end of the protective cover plate is fixed to the winding assembly, and the second end of the protective cover plate is fixed to the second supporting mechanism.

15. The flexible display device according to claim 14, characterized in that: The protective cover plate comprises a stretch-resistant layer, and the material of the stretch-resistant layer is selected from transparent polyimide or polyethylene terephthalate.

16. The flexible display device according to claim 14, characterized in that: The flexible display device also includes a one-way damping mechanism, the winding assembly includes a reel and a spring mechanism, the reel has a first end and a second end opposite to each other, the spring mechanism is connected to the first end of the reel and is used to apply a driving force to the reel to rotate in a second direction, and the one-way damping mechanism is connected to the second end of the reel and is used to apply a resistance to the reel to rotate in the second direction.

17. The flexible display device according to claim 16, characterized in that: The winding assembly also includes a reel having a accommodating cavity, the reel being arranged in the accommodating cavity of the reel, the coiling spring mechanism including a coiling spring and a first end cover, one end of the coiling spring being connected to the reel, the other end of the coiling spring being connected to the first end cover, and the first end cover being fixedly connected to the reel.

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