CN107545849B

CN107545849B - Flexible display device

Info

Publication number: CN107545849B
Application number: CN201710783588.6A
Authority: CN
Inventors: 杨戬
Original assignee: Shanghai AVIC Optoelectronics Co Ltd
Current assignee: Shanghai AVIC Optoelectronics Co Ltd
Priority date: 2017-09-01
Filing date: 2017-09-01
Publication date: 2021-03-02
Anticipated expiration: 2037-09-01
Also published as: CN107545849A

Abstract

The application relates to show technical field, especially relate to a flexible display device, it includes: a housing having a receiving space therein; the flexible display module can be positioned in the accommodating space; the flexible display module comprises a support back plate, wherein the support back plate is used for supporting the flexible display module and comprises at least two plate bodies, the plate bodies are connected in a nested manner, when the flexible display module is in a storage state, an overlapped part is formed after relative motion of the plate bodies and is stored in a storage space, and when the flexible display module is in an expansion state, the plate bodies stretch out of the storage space and expand to support the flexible display module. Each plate body can adopt the structure that is difficult to take place to warp, when flexible display module launches to support flexible display module, when having touch-control operation on the flexible display module, each plate body bears the touch-control power, and is difficult to warp, consequently can support flexible display module more powerfully, prevents that flexible display module from taking place to warp, promotes flexible display module's touch-control performance.

Description

Flexible display device

Technical Field

The application relates to the technical field of display, in particular to a flexible display device.

Background

With the continuous upgrade of display technology, flexible display devices are more and more favored by users, and therefore, the performance requirements of people for flexible display devices are higher and higher.

The flexible display device mainly comprises a flexible display module, a back plate and a machine shell, wherein the back plate and the machine shell are arranged below the flexible display module, and the flexible display module and the back plate can be accommodated in the machine shell. In order to integrate the touch function, a touch part is arranged in the flexible display module of one part of the flexible display device, so that the flexible display module can realize the functions of display and touch at the same time. Therefore, after the flexible display module is pulled out of the casing, the flexible display module is supported by the back plate, but the back plate is usually of a flexible structure, and once a user applies touch operation on the flexible display module, the back plate is easy to deform and cannot provide enough supporting force for the flexible display module. At this moment, the flexible display module will deform, which is not beneficial to the accurate touch control of the user, and results in the touch control performance of the flexible display module to be lower.

Disclosure of Invention

The application provides a flexible display device, and this flexible display device can promote flexible display module's touch-control performance.

The application provides a flexible display device, includes:

a housing having a receiving space therein,

a flexible display module capable of being positioned in the receiving space,

the supporting back plate is used for supporting the flexible display module and comprises at least two plate bodies which are connected in a nesting manner,

when the flexible display module is in a storage state, the plate bodies move relatively to form an overlapping part and are stored in the storage space,

when the flexible display module is in an unfolded state, the plate bodies extend out of the accommodating space and are unfolded to support the flexible display module.

Optionally, along the unfolding direction of the flexible display module, the plate bodies are sequentially nested with each other.

Optionally, the plate body sets up to at least three, is mainboard body, first curb plate body, second curb plate body respectively, first curb plate body passes through the mainboard body with the second curb plate body is connected, just first curb plate body with the second curb plate body all nests in the inside of mainboard body.

Optionally, the plate body comprises:

a support portion having a support surface,

a first connection part protruding with respect to the support part,

a second connection part protruding with respect to the support part,

the first connecting part and the second connecting part are connected to two opposite sides of the supporting part, in the connected plate bodies, the first connecting part of one is nested with the first connecting part of the other, the second connecting part of one is nested with the second connecting part of the other,

the first connecting portion, the second connecting portion and the flexible display module are located on the same side of the supporting portion.

Optionally, at least one of the first connecting portion and the second connecting portion is a winding structure, and a winding axis of the winding structure is parallel to an unfolding direction of the flexible display module.

Optionally, the winding structure comprises a plurality of planar segments connected end to end in sequence around the winding shaft.

Optionally, the support portion is a planar structure, and the planar section connected to the support portion is perpendicular to the support portion.

Optionally, in the connected plates:

the first connecting portion of one and the first connecting portion of the other together form a closed roll, and/or

The second connecting portion of one and the second connecting portion of the other together form a closed roll.

Optionally, the method further comprises:

a supporting shaft is arranged on the supporting shaft,

the support shaft is provided inside at least one of the first connecting portion and the second connecting portion.

Optionally, the method further comprises:

the flexible storage rope is connected with the plate body at one end and connected into the shell at the other end, traction force can be applied to the plate body through the flexible storage rope, and the direction of the traction force is towards the shell.

Optionally, the method further comprises:

a reel disposed within the housing,

one end of the flexible storage rope is fixedly connected with the plate body, the other end of the flexible storage rope is wound and fixed on the scroll, and acting force is applied to the flexible storage rope when the scroll rotates, so that the flexible storage rope applies traction force to the plate body.

Optionally, the method further comprises:

one end of the spiral spring is fixed relative to the shell, the other end of the spiral spring is connected with the flexible storage rope, and the spiral spring applies the traction force to the plate body through the flexible storage rope.

Optionally, the method further comprises:

a guide member disposed in the casing, the flexible receiving cord being connected to the spiral spring after passing around the guide member,

an avoiding interval is arranged between the volute spiral spring and the inner wall of the machine shell, and the supporting back plate can be positioned in the avoiding interval.

Optionally, the method further comprises:

a position-limiting component,

the volute spring is arranged in the casing through a mounting plate, the limiting piece is rotatably mounted on the mounting plate, and the volute spring and the limiting piece are respectively positioned at two opposite sides of the mounting plate,

the limiting piece has a limiting position when rotating along a first direction relative to the mounting plate so as to enable the flexible display module to be positioned at a preset position, when the limiting piece rotates along a second direction relative to the mounting plate, the flexible display module is retracted into the accommodating space under the action of the volute spiral spring,

wherein one of the first direction and the second direction is clockwise and the other is counterclockwise.

Optionally, the housing includes a first housing and a second housing, the first housing has a first receiving space therein, the second housing has a second receiving space therein, one end of the flexible display module is connected to the first receiving space, and the other end of the flexible display module is connected to the second receiving space.

Optionally, the plate body is a rigid structure.

Optionally, the method further comprises:

the reel is arranged in the shell and located in the containing space, and the flexible display module is wound on the reel.

The technical scheme provided by the application can achieve the following beneficial effects:

in the flexible display device provided by the application, the support back plate comprises at least two plate bodies which are connected in a nesting way, when the flexible display module is in an unfolded state, each plate body extends out of the accommodating space and is unfolded, so as to support the flexible display module, when the flexible display module is in a storage state, the plate bodies move relatively to form an overlapping part and are stored in the storage space, after the arrangement, the board bodies can be accommodated in the accommodating space through the relative movement of the board bodies, so that the board bodies can adopt a structure which is not easy to deform, when the flexible display module is unfolded, each plate body supports the flexible display module, and when touch operation exists on the flexible display module, each plate body bears touch force, and be difficult to warp, consequently can support flexible display module more powerfully, prevent that flexible display module from taking place to warp to promote flexible display module's touch-control performance.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

Fig. 1 is a schematic view of a flexible display device provided in an embodiment of the present application in a storage state;

fig. 2 is a perspective view of a flexible display device provided by an embodiment of the present application in a storage state;

fig. 3 is a schematic view of a flexible display device provided in an embodiment of the present application in an unfolded state;

fig. 4 is a top view of a flexible display device provided by an embodiment of the present application in an unfolded state;

fig. 5 is a sectional view taken along a-a of the flexible display device shown in fig. 1;

FIG. 6 is an enlarged partial view of portion I of the structure shown in FIG. 5;

FIG. 7 is a schematic structural diagram of a supporting backplane in a flexible display device according to another embodiment;

FIG. 8 is a schematic diagram of a supporting backplane in a flexible display device according to yet another embodiment;

FIG. 9 is a schematic diagram of a supporting backplane of a flexible display device according to still another embodiment;

FIG. 10 is a cross-sectional view taken along line C-C of FIG. 9;

fig. 11 is a perspective view of a flexible display device provided in another embodiment of the present application in a stored state;

FIG. 12 is a schematic view of the flexible display device shown in FIG. 11 in an unfolded state

Fig. 13 is a cross-sectional view of the flexible display device shown in fig. 11;

fig. 14 is a partially enlarged schematic view of a portion II of fig. 13;

fig. 15 is a partial cross-sectional view of the assembled flexible display module and each of the panels according to another embodiment of the present application;

fig. 16 is a partial cross-sectional view of the assembled flexible display module and each of the panels according to yet another embodiment of the present application;

fig. 17 is a schematic view of a flexible display device according to still another embodiment of the present application in an unfolded state;

FIG. 18 is a schematic view of a flexible display device according to yet another embodiment of the present application in an unfolded state;

fig. 19 is a schematic view of a flexible display device according to still another embodiment of the present application in an unfolded state with a chassis removed;

FIG. 20 is a front perspective view of the flexible display device of FIG. 19 in an expanded state;

fig. 21 is an assembly diagram of a position limiting member in a flexible display device according to still another embodiment of the present disclosure;

fig. 22 is a schematic view of a flexible display device according to still another embodiment of the present disclosure in a storage state;

fig. 23 is a schematic view of the flexible display device shown in fig. 22 in an unfolded state.

Reference numerals:

100-a flexible display module;

120-a housing;

122-a receiving space;

124-a first shell;

126-a second shell;

140-a flexible display module;

160-a support backing plate;

162-a plate body;

162 a-a support;

162 b-a first connection;

162 ba-sliding rail;

162 bb-projection;

162 bc-plane segment;

162 c-a second connecting portion;

1621-a first plate;

1622-a second plate;

1623-a third plate;

1624-main board body;

1625-a first side plate;

1626-a second side panel body;

180-a handle;

200-a support shaft;

220-flexible storage rope;

240-reel;

260-a scroll spring;

280-a guide;

300-a stop;

320-mounting plate.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Detailed Description

The present application is described in further detail below with reference to specific embodiments and with reference to the attached drawings.

The embodiment of the application provides a flexible display device, which has a storage state and an expansion state, when the flexible display device is in the storage state, the occupied space of each component is smaller, and one part of components is stored by the other part of components, so that the flexible display device is convenient to store, and the protection of a core component is ensured; when the flexible display device is in the unfolding state, the core component of the flexible display device is in the exposed state so as to display related information.

Specifically, as shown in fig. 1 to 6, the flexible display module specifically includes:

a housing 120 having a receiving space 122 inside the housing 120,

the flexible display module 140, the flexible display module 140 can be located in the above-mentioned receiving space 122, this flexible display module 140 specifically can include the display screen, touch-control part etc., the display screen can be liquid crystal display panel or organic light emitting display panel, can be flexible as organic light emitting display panel, specifically can include array substrate, the luminescent layer, the negative pole, packaging layer and glass apron etc., be provided with the thin film transistor that the array was arranged on the array substrate, the positive pole of being connected with thin film transistor, the luminescent layer sets up between negative pole and positive pole, through the electric field that forms between negative pole and the positive pole, can drive the luminescent layer and give off light, the packaging layer can be with array substrate, luminescent layer and cathode encapsulation, the glass apron sets up on the packaging layer. The touch portion may be disposed on the display screen.

As shown in fig. 2, 3 and 4, the supporting back plate 160 is used for supporting the flexible display module 140, and the supporting back plate 160 includes at least two plate bodies 162, and each plate body 162 is connected in a nesting manner, where the nesting means that at least a portion of at least one plate body 162 is embedded inside another plate body 162. Specifically, the plate 162 may include a supporting portion 162a, and the supporting portion 162a has a supporting surface, which may directly contact the flexible display module 140, so as to apply a supporting force to the flexible display module 140. At this time, the nested connection between the plate bodies 162 may be a structure in which the supporting portion 162a of at least one of the plate bodies 162 is hollow, and the supporting portion 162a of the other plate body 162 is fitted in the hollow supporting portion 162a, that is, the structure shown in fig. 6. Alternatively, the number of the plate bodies 162 may be two.

Optionally, as shown in fig. 1, the flexible display module may further include a reel 240, the reel 240 is disposed in the housing 120, specifically, the reel 240 is located in the receiving space 122 of the housing 120, the reel 240 may rotate relative to the housing 120, and the flexible display module 140 may be wound on the reel 240. When the rolling shaft 240 rotates, a force may be applied to the flexible display module 140, so that the flexible display module 140 applies a traction force to the plate 162. In an embodiment, the rotation of the winding shaft 240 can be realized by means of an external component, for example, a micro motor and a transmission mechanism can be arranged inside the housing 120, the micro motor drives the winding shaft 240 to rotate through the transmission mechanism, and then the flexible display module 140 on the winding shaft 240 is gradually wound in a manner of rotating the winding shaft 240, and then each plate 162 is driven to return to the housing 120.

As shown in fig. 1 and 2, when the flexible display module 140 is in the storage state, the flexible display module 140 is wound onto the reel 240 under the rotational traction of the reel 240, and the plate bodies 162 form an overlapping portion after being relatively moved under the rotational traction of the reel 240, and are stored in the storage space 122. Specifically, the plate bodies 162 are generally configured as a flat plate structure, and the relative movement direction between the plate bodies 162 may be a direction parallel to the plane of the plate bodies 162, so that the plate bodies 162 may eventually form an overlapping portion in a direction perpendicular to the plane, where the overlapping may be a portion of one plate body 162 overlapping a portion of another plate body 162, or may be a portion of one plate body 162 overlapping another plate body 162.

As shown in fig. 3 and 4, when the flexible display module 140 is in the unfolded state, each plate 162 extends out of the receiving space 122 and is unfolded to support the flexible display module 140. When the flexible display module 140 is switched from the storage state to the extended state, the moving direction of each plate 162 is opposite to the moving direction of the flexible display module 140 when switched from the extended state to the storage state, specifically, in the process of reaching the extended state, one part of the plate 162 extends out relative to the other part of the plate 162, so as to increase the length of the support back plate 160 formed by each plate 162 in the moving direction, and further achieve the requirement of supporting the flexible display module 140. It should be noted that, in order to satisfy the nested connection between the board bodies 162, the supporting surfaces of the supporting portions 162a of the board bodies 162 are not on the same plane, that is, a part of the supporting portions 162a can maintain a contact state with the flexible display module, and a small gap is formed between a part of the supporting portions 162a and the flexible display module 140, so that when a touch operation is performed on the flexible display module 140, the flexible display module 140 is slightly deformed, then contacts with the supporting portions 162a, and is further supported by the supporting portions 162 a. In practical implementation, the gap between the supporting portion 162a and the flexible display module 140 can be controlled as small as possible while meeting the requirement of relative movement between the plate bodies 162, so as to control the deformation of the flexible display module 140.

In addition, for convenience of operation, as shown in fig. 1 to 4, the flexible display device may further include a handle 180, the handle 180 is connected to one end of the flexible display module 140, and an operator may apply a force to the handle 180 to transmit the force to the flexible display module 140.

After adopting above-mentioned flexible display device, can make each plate body 162 overlap mutually, and then accomodate in accomodating the space, consequently each plate body 162 can adopt the structure that is difficult to take place to warp, and when flexible display module 140 expandes, each plate body 162 expandes and supports this flexible display module 140, when there is touch-control operation on the flexible display module 140, each plate body 162 bears the touch-control power, and be difficult to warp, consequently can support flexible display module 140 more powerfully, prevent that flexible display module 140 from taking place to warp, with the touch-control performance who promotes flexible display module 140.

Because each plate body 162 can adopt a structure which is not easy to deform, the plate body 162 can adopt a structure with smaller elasticity as long as the supporting requirement of the flexible display module 140 can be met, for example, the plate body 162 is made of hard or high-flexibility materials such as rubber. Preferably, the plate 162 may be a rigid structure, so that the plate 162 is not deformed substantially when the acting force applied to the plate 162 is within a certain range, and the flexible display module 140 can be supported better. Alternatively, the plate body 162 may be a metal plate.

It is mentioned above that the plate body 162 can be set to two, for the better each plate body of accomodating, guarantee the support area that can form after the plate body 162 expandes simultaneously, can set up plate body 162 to three, four or more, this moment, along the expansion direction of flexible display module 140, each plate body 162 nests each other in proper order. For example, as shown in fig. 7, when three plate bodies 162 are provided, the three plate bodies 162 may be a first plate body 1621, a second plate body 1622, and a third plate body 1623, at least a portion of the third plate body 1623 may be embedded in the second plate body 1622, and at least a portion of the second plate body 1622 may be embedded in the first plate body 1621. When the structure is adopted, the plate bodies 162 can be accommodated with each other, so that the space occupied by each plate body 162 after being stored is basically the space occupied by one plate body 162, and therefore, the space occupied by each plate body 162 after being stored can be effectively reduced, and the plate bodies 162 can be stored more conveniently.

In another embodiment, as shown in fig. 8, the number of the plate bodies 162 is at least three, which are a main plate body 1624, a first side plate body 1625, and a second side plate body 1626, the first side plate body 1625 is connected to the second side plate body 1626 through the main plate body 1624, and the first side plate body 1625 and the second side plate body 1626 are nested inside the main plate body 1624. That is to say, when flexible display module 140 is in the state of accomodating, first side plate body 1625 and second side plate body 1626 all accomodate in the inside of mainboard body 1624, this moment, first side plate body 1625 and second side plate body 1626 can not have nested relation, consequently both's size, especially thickness all can only be for mainboard body 1624 a little less, when flexible display module 140 is in the expansion state, both are basically unanimous with the clearance between the flexible display module 140, and not too big to this takes place too big deformation after preventing flexible display module 140 better to receive the touch-control power.

In an alternative embodiment, as shown in fig. 9 and 10, the plate 162 may further include, in addition to the support portion 162 a:

a first connection part 162b, the first connection part 162b protruding with respect to the support part 162a,

a second connection part 162c, the second connection part 162c protruding with respect to the support part 162a,

the first connecting portion 162b and the second connecting portion 162c are connected to opposite sides of the supporting portion 162a, and in the connected plate bodies 162, the first connecting portion 162b of one is nested with the first connecting portion 162b of the other, and the second connecting portion 162c of one is nested with the second connecting portion 162c of the other. The first connecting portion 162b, the second connecting portion 162c and the flexible display module 140 are located on the same side of the supporting portion 162 a.

First, the flexible display module 140 is basically located between the first connecting portion 162b and the second connecting portion 162c, so that the first connecting portion 162b and the second connecting portion 162c can limit the position of the flexible display module 140, and the flexible display module 140 is prevented from moving in the connecting direction of the first connecting portion 162b, the supporting portion 162a and the second connecting portion 162c, so as to prevent friction between the flexible display module 140 and the board 162, thereby ensuring that the structure of the flexible display module 140 is not damaged. Secondly, the supporting portion 162a of each plate 162 does not need to be designed with a complicated nesting structure, but is dedicated to supporting the flexible display module 140, so that a solid structure can be adopted, and more reliable support is provided for the flexible display module 140.

Specifically, as shown in fig. 10, in the connected plate bodies 162, a sliding rail 162ba is disposed on the first connecting portion 162b of one of the connected plate bodies 162, and a protrusion 162bb is disposed on the first connecting portion 162b of the other of the connected plate bodies 162, and the protrusion 162bb is slidably fitted in the sliding rail 162ba, so as to ensure that the two are connected all the time and can move relatively. Of course, the second connection portion 162c of the connected plate 162 may also have such a structure.

With continued reference to fig. 11-14, in another embodiment, in order to increase the connection area between the plate bodies 162, at least one of the first connection portion 162b and the second connection portion 162c is a winding structure, and a winding axis O of the winding structure is parallel to the extending direction (i.e., the X direction in fig. 11) of the flexible display module. In the same plate body 162, only the first connection portion 162b may be provided in a wound structure, and in general, the first connection portion 162b of another plate body 162 connected to the first connection portion 162b is also provided in a wound structure; the second connection portion 162c is the same; the first connection portion 162b and the second connection portion 162c of the connected plate body 162 are provided in a winding structure.

After adopting above-mentioned structure, the winding structure who connects has great area of contact for relative motion between each plate body 162 is more stable, pulls flexible display module 140 when preventing each plate body 162 motion. Specifically, at least one of the first connection portion 162b and the second connection portion 162c may be an arc-shaped non-closed winding structure.

In yet another embodiment, the winding structure may include a plurality of planar segments connected end to end in sequence about a winding axis. As shown in the embodiment of fig. 15, taking the first connection portion 162b as an example, the first connection portion 162b includes a plurality of planar segments 162bc sequentially connected end to end about the winding axis. When the winding structure includes a planar segment, a relatively uniform gap can be maintained between the side surface of the flexible display module 140 and the planar end. Generally, the side of the flexible display module 140 is a plane, and at this time, one of the plane segments of the winding structure is opposite to the side of the flexible display module 140. Further, the plane section and the side surface of the flexible display module 140 may be parallel to each other, that is, the supporting portion 162a is a plane structure, and the plane section connected to the supporting portion 162a is perpendicular to the supporting portion 162 a. In case flexible display module 140 contacts with the winding structure, the contact between this plane section and the side of flexible display module 140 is the face contact, therefore flexible display module 140 is difficult to appear the too big problem of local atress, is favorable to guaranteeing flexible display module 140's structural integrity.

Further, as shown in fig. 15, in the connected plate 162:

the first connecting portion 162b of one and the first connecting portion 162b of the other form a closed winding body, and/or

The second connection portion 162c of one and the second connection portion 162c of the other form a closed winding body.

Here, the closed wound body means that the wound portion of the first connecting portion 162b of one plate body 162 is wrapped by the wound portion of the first connecting portion 162b of the other plate body 162, and further, the two may be formed into a multi-layer-like structure. This embodiment may further increase the contact area between the connected first connection portions 162b or second connection portions 162c to enhance the motion stability between the connected plate bodies 162. In addition, the winding structure is generally a structure processed by a bending process, and the embodiment can also limit the connected winding structures mutually, prevent the winding structures from rebounding, and not be easily extruded mutually, thereby ensuring the fluency of the connected plate bodies 162 during relative movement.

In an alternative embodiment, as shown in fig. 16, the flexible display device 100 may further include a support shaft 200, and the support shaft 200 is disposed inside at least one of the first connecting portion 162b and the second connecting portion 162 c.

When the first connecting portion 162b is configured as a winding structure, the first connecting portion 162b has a cavity therein, and the supporting shaft 200 is inserted into the cavity, so that the supporting shaft 200 can extend along the extending direction of the flexible display module 140, and when the plate bodies 162 move relatively, the supporting shaft 200 can provide a guide for the relative movement, so that the movement of the plate bodies 162 is more stable. Meanwhile, the support shaft 200 may connect each plate 162 to the cabinet 120.

The storage operation of the flexible display module 140 may be completed by manual pushing by an operator, specifically, the operator may push the handle 180, and the handle 180 may drive the plate bodies 162 to move toward each other until the plate bodies 162 are stored in the casing 120. In this process, the flexible display module 140 can be synchronously accommodated along with the movement of each plate 162. In another embodiment, as shown in fig. 17, the flexible display module 140 may further include:

and a flexible storage rope 220, one end of the flexible storage rope 220 being connected to the plate 162 and the other end being connected to the inside of the housing 120, wherein the flexible storage rope 220 is capable of applying a traction force to the plate 162, the traction force being directed toward the housing 120. This flexible rope 220 of accomodating can set up to the elasticity rope, and when flexible display module 140 expanded, flexible rope 220 of accomodating can be stretched, when flexible display module 140 need accomodate, and flexible rope 220 of accomodating resumes deformation, and then draws each plate body 162 to draw close to the inside of casing 120, also can drive flexible display module 140 and accomodate in the accommodation space 122 of casing 120 voluntarily simultaneously. This flexible rope 220 of accomodating can set up to a plurality ofly, and a plurality of flexible rope 220 of accomodating are connected with same plate body 162 simultaneously to reliability and stability when promoting to pull.

In this case, as shown in fig. 18, one end of the flexible storage string 220 is fixedly connected to the plate 162, and the other end is wound around the reel 240, so that the flexible storage string 220 applies a force to the plate 162 when the reel 240 rotates, thereby applying a traction force to the plate 162 by the flexible storage string 220. In an embodiment, the rotation of the winding shaft 240 can be realized by the micro motor and the transmission mechanism mentioned in the previous embodiment, the micro motor drives the winding shaft 240 to rotate through the transmission mechanism, and then the flexible display module 140 and the flexible storage rope 240 on the winding shaft 240 are gradually wound in a manner of rotating the winding shaft 240, so as to drive the plate bodies 162 to return to the housing case 120.

As shown in fig. 19, the flexible display device 100 may further include:

and a spiral spring 260 having one end fixed to the housing case 120 and the other end connected to the flexible receiving rope 220, wherein the spiral spring 260 applies a traction force to the plate 220 through the flexible receiving rope 220. The spiral spring 260 is sheet-shaped, and the spiral spring 260 can elastically deform after being stressed, and the spiral spring 260 can recover to deform after the external force is removed. When the flexible display module 140 is unfolded, the plate 220 may pull one end of the spiral spring 260 under the pulling of an operator, so that the whole spiral spring 260 is gradually tightened, which is an energy storage process; when the flexible display module 140 is received, the external force applied to the spiral spring 260 is removed, and the spiral spring will recover its deformation, so that the flexible receiving rope 220 pulls each plate 220 to be received in the housing case 120, which is a process of releasing energy. It can be seen that the scroll spring 260 can conveniently realize the automatic accommodation of each plate 220 without other complicated structures, so the scroll spring 260 can simplify the structure of the flexible display device 100.

In order to better drive each plate 162 to move through the spiral spring 260, as shown in fig. 20, the flexible display device 100 may further include a guide 280, the guide 280 is disposed in the housing case 120, the flexible receiving rope 220 is connected to the spiral spring 260 after passing through the guide 280, an avoiding space S may be formed between the spiral spring 260 and an inner wall of the housing case 120, and the support back plate 160 may be located in the avoiding space S after being received. This guide 280 limits the position of the flexible receiving cord 220 and prevents confusion during movement of the flexible receiving cord 220 and the wrap spring 260. In addition, when the escape space S is provided, the internal space of the housing 120 can be sufficiently utilized, and the size of the housing 120 in the X direction in fig. 19 can be made as small as possible.

In a further embodiment, referring to fig. 19, 20 and 21, the flexible display device 100 may further include a position limiter 300, the spiral spring 260 may be disposed in the housing case 120 through a mounting plate 320, the position limiter 300 is rotatably mounted on the mounting plate 320, and the spiral spring 260 and the position limiter 300 are respectively located on two opposite sides of the mounting plate 320. When the limiting member 300 rotates along the first direction relative to the mounting plate 320, the limiting member 300 has a limiting position, so that the flexible display module 140 is located at a predetermined position, and when the limiting member 300 rotates along the second direction relative to the mounting plate 320, the flexible display module 140 retracts into the receiving space under the action of the spiral spring 260. Wherein, one of the first direction and the second direction is clockwise, and the other is anticlockwise. Specifically, the position-limiting element 300 may be a block structure as shown in fig. 21, the position-limiting element 300 is located in a groove formed on the mounting plate 320, the position-limiting element 300 may rotate in the groove along with the unfolding of the plate 162, and an end of the position-limiting element 300 may be in positioning fit with a partially protruding inner wall of the groove. When the flexible display module 140 reaches the predetermined position, the end of the position-limiting member 300 is in positioning fit with the groove, so as to prevent the plate 162 from moving back, thereby causing the flexible display module 140 to move back.

After the limiting member 300 is adopted, when the flexible display module 140 and each plate 162 are pulled, when the flexible display module 140 and each plate 162 move to the predetermined position, the pulling force can be removed, and the limiting member 300 can prevent the spiral spring 260 from resetting, so that the flexible display module 140 and each plate 162 are positioned at the predetermined position and kept still. If the flexible display module 140 and the plate bodies 162 need to be pulled continuously, the flexible display module 140 and the plate bodies 162 need to be pulled again. Therefore, in this embodiment, the flexible display module 140 and the panels 162 can be unfolded more conveniently and reliably.

In the above embodiments, the chassis 120 may be disposed on a single side of the flexible display module 140, and an end of the flexible display module 140 may be connected to the handle 180. In another embodiment, as shown in fig. 22 and 23, the housing 120 may include a first housing 124 and a second housing 126, the first housing 124 has a first receiving space therein, the second housing 126 has a second receiving space therein, one end of the flexible display module 140 is connected to the first receiving space, and the other end is connected to the second receiving space, and accordingly, a portion of each plate 162 is received in the first housing 124, and the other portion is received in the second housing 126. The first shell 124 and the second shell 126 can be relatively close to each other to accommodate the flexible display module 140 and each board 162, and the flexible display module 140 and each board 162 can be unfolded by relatively separating the two shells.

It should be noted that, in the foregoing embodiments, the structure applied to the case 120 only disposed on one side of the flexible display module 140 may be applied to the embodiment in which the case 120 includes the first case 124 and the second case 126, for example, the flexible storage rope 220 may be disposed in two parts, one part of the flexible storage rope 220 is connected to the first case 124, and the other part of the flexible storage rope 220 is connected to the second case 126. For the sake of text introduction, these technical solutions are not explained in detail here.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A flexible display device comprising:

a housing having a receiving space therein,

a flexible display module capable of being positioned in the receiving space,

the reel is arranged in the shell and positioned in the accommodating space, and the flexible display module is wound on the reel;

the flexible display module comprises a flexible display module, a supporting back plate and a supporting frame, wherein the supporting back plate is used for supporting the flexible display module and comprises at least two plate bodies which are connected in a nested manner, and the plate bodies are sequentially nested with each other along the unfolding direction of the flexible display module;

when the flexible display module is in an unfolded state, each plate body extends out of the accommodating space and is unfolded to support the flexible display module;

the plate body includes:

a support portion having a support surface,

a first connection part protruding with respect to the support part,

a second connection part protruding with respect to the support part,

the first connecting part and the second connecting part are connected to two opposite sides of the supporting part and used for preventing the flexible display module from moving in the connecting direction of the first connecting part, the supporting part and the second connecting part;

the first connecting part of one is nested with the first connecting part of the other, the second connecting part of one is nested with the second connecting part of the other, at least one of the first connecting part and the second connecting part is in a winding structure,

the coiled structure is formed by wrapping the coiled part of the first connecting part of one plate body by the coiled part of the first connecting part of the other plate body, or,

the winding structure is formed by wrapping the winding part of the second connecting part of one plate body by the winding part of the second connecting part of the other plate body;

the winding shaft of the winding structure is parallel to the unfolding direction of the flexible display module, wherein the winding structure enables relative movement between the plate bodies to be more stable, and the flexible display module is prevented from being pulled when the plate bodies move;

2. The flexible display device according to claim 1, wherein the number of the board bodies is at least three, and the board bodies are respectively a main board body, a first side board body and a second side board body, the first side board body is connected with the second side board body through the main board body, and the first side board body and the second side board body are nested inside the main board body.

3. The flexible display device of claim 1, wherein the winding structure comprises a plurality of planar segments connected end-to-end in sequence around the winding axis.

4. The flexible display device of claim 3, wherein the support portion is a planar structure, and the planar segment connected to the support portion is perpendicular to the support portion.

5. The flexible display device according to claim 1, wherein the connected panel bodies have:

6. The flexible display device of claim 1, further comprising:

a supporting shaft is arranged on the supporting shaft,

7. The flexible display device of claim 1, further comprising:

8. The flexible display device of claim 7, further comprising:

9. The flexible display device of claim 8, further comprising:

10. The flexible display device of claim 9, further comprising:

11. The flexible display device of claim 9, further comprising:

a position-limiting component,

12. The flexible display device according to any one of claims 1 to 11, wherein the housing comprises a first housing and a second housing, the first housing has a first receiving space therein, the second housing has a second receiving space therein, and one end of the flexible display module is connected to the first receiving space and the other end of the flexible display module is connected to the second receiving space.

13. The flexible display device according to any of claims 1-11, wherein the plate body is a rigid structure.