CN115662293A - Flexible display device - Google Patents

Abstract

A flexible display device comprising: the flexible display module comprises a flexible display module, a track, a supporting piece, a bracket, a motor sliding block and a movable machine shell; the flexible display module comprises a head end and a tail end which are oppositely arranged, and the head end of the flexible display module is fixed; the supporting piece is positioned on the non-display side surface of the flexible display module, connected with the flexible display module and the rail and capable of moving under the driving of the rail; the supporting piece comprises a first supporting piece and a tail supporting piece, and the tail supporting piece is connected with the tail end of the flexible display module; the bracket is positioned on one side of the tail support piece far away from the first support piece, and is connected with the tail support piece and is arranged to provide tensile stress for the tail support piece; the movable shell is connected with the track and is arranged to drive the track to move; the motor sliding block is arranged to drive the movable shell to move so as to realize the unfolding state of the flexible display module; the motor slide block is further arranged to drive the support to move so as to achieve the withdrawing state of the flexible display module.

Description

Flexible display device

technical field

This article involves but is not limited to display technology, especially a flexible display device.

Background technique

With the continuous development of display technology, flexible display devices are more and more widely used. The flexible display module has the characteristics of light and thin volume, strong bending flexibility, and widens the structural form of the terminal equipment. The terminal equipment has folding, sliding, rolling and other structural forms. For the sliding display device, users can The display area of the sliding scroll flexible display module can be freely switched according to one's own needs, which is not only convenient for users to carry around, but also provides a better user experience. At present, the sliding coil device has made breakthroughs in the direction of shaft type sliding coil device and track type sliding coil device.

The inventors of the present application found that the display module of the track-type sliding roll machine device has a problem of high power consumption of the motor when it is retracted.

Contents of the invention

The following is an overview of the topics described in detail in this article. This summary is not intended to limit the scope of the claims.

The embodiment of the present disclosure provides a flexible display device to solve the problem of high power consumption of the motor when the display module of the track-type slide-to-roll complete machine device is retracted.

On the one hand, an embodiment of the present disclosure provides a flexible display device, including: a flexible display module, a rail, a support, a bracket, a motor slider, and a movable casing; the flexible display module includes a head end and a The tail end, the head end of the flexible display module is fixed; the support is located on the non-display side surface of the flexible display module, the support is connected with the flexible display module and the track, the The support can move under the drive of the track; the support includes a first support and a tail support, and the tail support is connected to the tail end of the flexible display module; the bracket is located at the tail The side of the support member away from the first support member, the bracket is connected to the tail support member, and is configured to provide tensile stress to the tail support member; the movable casing is connected to the track, and is configured to drive The track moves; the motor slider is set to drive the movable casing to move to realize the unfolded state of the flexible display module; the motor slider is also set to drive the bracket to move to realize the Flexible display of retracted status of the module.

In an exemplary embodiment, the tail support is connected to the bracket through a slide bar; the bracket is provided with an oblique chute, and the extension direction of the oblique chute is in line with the extension direction of the support Intersect each other, one end of the slide bar is connected to the tail support, and the other end of the slide bar can move in the inclined chute.

In an exemplary embodiment, at least two slide bars are arranged between the tail support and the bracket, and the at least two slide bars are evenly distributed along the extending direction of the tail support.

In an exemplary embodiment, the sliding rod is connected to the inclined chute through a slider, and the slider can move in the inclined chute.

In an exemplary embodiment, the inclined chute includes a first position and a second position; when the flexible display module is in a retracted state, the slider is located at the first position; When the module is in an unfolded state, the slider is located at the second position.

In an exemplary embodiment, the movement of the slider in the inclined chute is synchronized with the movement of the flexible display module.

In an exemplary embodiment, during the movement of the flexible display module, along the unfolding direction of the flexible display module, the movement distance of the tail end of the flexible display module and the movement of the slider The distance ratio is 2 to 1.

In an exemplary embodiment, the moving distance of the slider along the first direction is L1, the first direction is the unfolding direction of the flexible display module, and the second direction is perpendicular to the first direction; The length of the slide bar is L2; the distance between the first position and the second position along the direction of the inclined chute is L3; the first angle between the extending direction of the inclined chute and the second direction is α1; when the slider is at the first position, the second angle between the extension direction of the slider and the first direction is α2; the dimensions of each part satisfy the following relationship: (L1+L2 *cosα2) ² −(L3*sinα1) ² =(L2) ² −(L2*sinα2−L3*cosα1) ² .

In an exemplary embodiment, the track is provided with a card slot; the support member includes a support bar and hooks located on both sides of the support bar; the support bar and the non-display side surface of the flexible display module connected, the hook is connected with the slot.

In an exemplary embodiment, the flexible display device further includes a fixed casing, the flexible display module is located in the fixed casing, and the head end of the flexible display module is fixed on the casing.

In the flexible display device provided by the embodiments of the present disclosure, by setting a bracket on the side of the tail support away from the first support, the motor slider drives the movable casing to realize the expansion of the flexible display module, and the motor slider drives the bracket to realize the flexible display module. Group retraction. The bracket can provide tensile stress to the rear support so that the flexible display module can always be kept flat. Moreover, the flexible display device provided by the embodiments of the present disclosure requires less driving force during the retraction process of the flexible display module, which helps to save motor power. It solves the problem of high power consumption of the motor when the display module of the track-type sliding roll machine is retracted.

Additional features and advantages of the disclosure will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the disclosure. Other advantages of the present disclosure can be realized and obtained through the solutions described in the specification and the accompanying drawings.

Other aspects will be apparent to others upon reading and understanding the drawings and detailed description.

Description of drawings

The accompanying drawings are used to provide an understanding of the technical solutions of the present disclosure, and constitute a part of the specification, and are used together with the embodiments of the present disclosure to explain the technical solutions of the present disclosure, and do not constitute limitations to the technical solutions of the present disclosure.

Fig. 1 is the structural representation of a kind of track-type sliding rolling device;

Fig. 2 is a cross-sectional structure diagram of the track and screen support in Fig. 1;

Fig. 3 is a schematic diagram of a single-side structure of a screen support;

Fig. 4 is a schematic structural view of the screen support in Fig. 1 on the curved surface;

5 is a schematic structural view of a flexible display device in a retracted state in an embodiment of the present disclosure;

6 is a schematic structural view of a flexible display device in an unfolded state in an embodiment of the present disclosure;

Fig. 7 is a comparison diagram of the movement distances of the flexible display module and the slider along the direction of deployment of the flexible display module in the exemplary embodiment;

Fig. 8 is a structural comparison diagram of the sliding rod in the deployed state and retracted state in the exemplary embodiment.

Reference signs:

1, 1'-flexible display module; 2, 2'-track; 3-tail support;

3’-Screen support; 4-Motor slider; 5-Bracket;

6-slide bar; 7-slanted chute; 8-movable casing;

9, 9’-card slot; 10-fixed casing; 31’-support bar

32'-the hook; 33-the first support.

Detailed ways

The present disclosure describes a number of embodiments, but the description is illustrative rather than restrictive, and it will be apparent to those of ordinary skill in the art that within the scope encompassed by the described embodiments of the present disclosure, There are many more embodiments and implementations. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Except where expressly limited, any feature or element of any embodiment may be used in combination with, or substituted for, any other feature or element of any other embodiment.

This disclosure includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The disclosed embodiments, features and elements of this disclosure may also be combined with any conventional feature or element to form unique inventive solutions as defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other inventive solutions to form yet another unique inventive solution as defined by the claims. It is therefore to be understood that any of the features shown and/or discussed in this disclosure can be implemented alone or in any suitable combination. Accordingly, the embodiments are not to be limited except in accordance with the appended claims and their equivalents. Furthermore, various modifications and changes may be made within the scope of the appended claims.

Furthermore, in describing representative embodiments, the specification may have presented a method and/or process as a particular sequence of steps. However, to the extent the method or process is not dependent on the specific order of steps described herein, the method or process should not be limited to the specific order of steps described. Other sequences of steps are also possible, as will be appreciated by those of ordinary skill in the art. Therefore, the specific order of the steps set forth in the specification should not be construed as limitations on the claims. Furthermore, claims to the method and/or process should not be limited to performing their steps in the order written, as those skilled in the art can readily appreciate that such order can be varied and still remain within the spirit and scope of the disclosed embodiments Inside.

In the drawings, the size of one or more constituent elements, the thickness of a layer, or a region is sometimes exaggerated for the sake of clarity. Therefore, one mode of the present disclosure is not necessarily limited to the dimensions, and the shape and size of one or more components in the drawings do not reflect the true scale. In addition, the drawings schematically show ideal examples, and one aspect of the present disclosure is not limited to shapes, numerical values, and the like shown in the drawings.

Ordinal numerals such as "first", "second", and "third" in this specification are provided to avoid confusion of constituent elements, and are not intended to limit the number. "Plurality" in the present disclosure means two or more quantities.

In this specification, for convenience, "middle", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner" are used , "external" and other words indicating the orientation or positional relationship are used to illustrate the positional relationship of the constituent elements with reference to the drawings, which are only for the convenience of describing this specification and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation , are constructed and operate in a particular orientation and therefore are not to be construed as limitations on the present disclosure. The positional relationship of the constituent elements is appropriately changed according to the direction of the described constituent elements. Therefore, it is not limited to the words and phrases described in the specification, and may be appropriately replaced according to circumstances.

In this specification, unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be interpreted in a broad sense. For example, it may be a fixed connection, or a detachable connection, or an integral connection; it may be a mechanical connection, or an electrical connection; it may be a direct connection, or an indirect connection through an intermediate piece, or an internal communication between two components. Those of ordinary skill in the art can understand the meanings of the above terms in the present disclosure according to the situation.

In this specification, "electrically connected" includes the case where constituent elements are connected together through an element having some kind of electrical function. The "element having some kind of electrical function" is not particularly limited as long as it can transmit electrical signals between connected components. Examples of "elements having some kind of electrical function" include not only electrodes and wiring but also switching elements such as transistors, resistors, inductors, capacitors, and other elements having various functions.

In the present specification, "parallel" refers to a state where the angle formed by two straight lines is -10° to 10°, and therefore includes a state where the angle is -5° to 5°. In addition, "perpendicular" means a state in which the angle formed by two straight lines is 80° to 100°, and therefore also includes an angle of 85° to 95°.

Embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

Figure 1 is a schematic structural view of a rail-type sliding roll device. As shown in Figure 1, the track-type sliding roll device includes a flexible display module 1', a track 2' and a screen support 3', and the flexible display module 1' can slide along the track 2' to realize the flexible display module 1 ' Expand and retract. A plurality of screen support members 3' are pasted on the non-display side of the flexible display module 1' for supporting the flexible display module 1' to keep the screen flat when unfolded. Fig. 2 is a cross-sectional structure diagram of the track and screen support in Fig. 1 . Fig. 3 is a schematic diagram of a single-side structure of a screen support member. 1 to 3, the screen support 3' includes a support bar 31' and hooks 32' provided at both ends of the support bar 31', the support bar 31' can be pasted on the non-display side of the flexible display module 1', and the track 2' can be provided with a slot 9', and the hook 32' can be locked on the slot 9', so as to realize the movement of the screen support 3' along with the movement of the track 2'. In the track-type sliding roll device shown in Figure 1, the movement process of the flexible display module 1' to expand and retract is as follows: the motor drives the sliding casing (not shown) and the track 2' moves, and the hook 32' moves along the track. 2', and then the screen support 3' drives the movement of the flexible display module 1' to realize the unfolding and retracting of the flexible display module 1'. The inventors of the present application have found through research that since the screen support 3' is strip-shaped, the contact area between the screen support 3' and the flexible display module 1' is approximately linear, and the movement mode of unfolding and retracting in Figure 1 is a " In this mode, the screen support 3' is equivalent to the force exerting side, the flexible display module 1' is the force receiving side, and the flexible display module 1' is especially retractable in the process of unfolding and retracting. During the process, the resistance encountered is relatively large, which in turn leads to large power consumption of the motor, and, during the unfolding and retracting process, the flexible display module 1 ′ is prone to wrinkles, and the user experience is not good.

FIG. 4 is a schematic structural view of the screen support in FIG. 1 on the curved surface. As shown in FIG. 4, in the motion mode in which the flexible display module 1' is driven by the screen support 3', the flexible display module 1' is subjected to tensile stress from the support bars 31', and each support bar 31' is at C There is a phenomenon of stress concentration in the region. Since the screen support 3' is pasted on the non-display side of the flexible display module 1', during the movement of the flexible display module 1', especially during the recycling of the flexible display module 1', the screen support 3 There may be glue opening between the flexible display module 1' and the flexible display module 1, and the risk of glue opening is greater at the position where the stress is concentrated.

An embodiment of the present disclosure provides a flexible display device, including: a flexible display module, a track, a support, a bracket, a motor slider, and a movable casing; the flexible display module includes a head end and a tail end arranged oppositely, and the flexible display The head end of the module is fixed; the support is located on the non-display side surface of the flexible display module, the support is connected with the flexible display module and the track, and the support can move under the drive of the track; the support includes a first support and a tail A support, the tail support is connected to the tail end of the flexible display module; the bracket is located on the side of the tail support away from the first support, the bracket is connected to the tail support, and is set to provide tensile stress to the tail support; the movable casing It is connected with the track and set to drive the track to move; the motor slider is set to drive the movement of the movable casing to realize the expanded state of the flexible display module; the motor slider is also set to drive the movement of the bracket to realize the retracted state of the flexible display module .

In the flexible display device provided by the embodiments of the present disclosure, by setting a bracket on the side of the tail support away from the first support, the motor slider drives the movable casing to realize the expansion of the flexible display module, and the motor slider drives the bracket to realize the flexible display module. Group retraction. The bracket can provide tensile stress to the rear support so that the flexible display module can always be kept flat. Moreover, the flexible display device provided by the embodiments of the present disclosure requires less driving force during the retraction process of the flexible display module, which helps to save motor power.

The flexible display device in the embodiments of the present disclosure may be any product or component with a display function such as a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, and the like.

In an exemplary embodiment, the tail support is connected to the bracket through a slide bar; the bracket is provided with an oblique chute, and the extension direction of the oblique chute is in line with the extension direction of the support Intersect each other, one end of the slide bar is connected to the tail support, and the other end of the slide bar can move in the inclined chute.

In an exemplary embodiment, at least two slide bars are arranged between the tail support and the bracket, and the at least two slide bars are evenly distributed along the extending direction of the tail support.

In an exemplary embodiment, the sliding rod is connected to the inclined chute through a slider, and the slider can move in the inclined chute.

In an exemplary embodiment, the inclined chute includes a first position and a second position; when the flexible display module is in a retracted state, the slider is located at the first position; When the module is in an unfolded state, the slider is located at the second position.

In an exemplary embodiment, the movement of the slider in the inclined chute is synchronized with the movement of the flexible display module.

In an exemplary embodiment, during the movement of the flexible display module, along the unfolding direction of the flexible display module, the movement distance of the tail end of the flexible display module and the movement of the slider The distance ratio is 2 to 1.

In an exemplary embodiment, the moving distance of the slider along the first direction is L1, the first direction is the unfolding direction of the flexible display module, and the second direction is perpendicular to the first direction; The length of the slide bar is L2; the distance between the first position and the second position along the direction of the inclined chute is L3; the first angle between the extending direction of the inclined chute and the second direction is α1; when the slider is at the first position, the second angle between the extension direction of the slider and the first direction is α2; the dimensions of each part satisfy the following relationship: (L1+L2 *cosα2) ² −(L3*sinα1) ² =(L2) ² −(L2*sinα2−L3*cosα1) ² .

In an exemplary embodiment, the track is provided with a card slot; the support member includes a support bar and hooks located on both sides of the support bar; the support bar and the non-display side surface of the flexible display module connected, the hook is connected with the slot.

In an exemplary embodiment, the flexible display device further includes a fixed casing, the flexible display module is located in the fixed casing, and the head end of the flexible display module is fixed on the casing.

FIG. 5 is a schematic structural diagram of a flexible display device in a retracted state in an embodiment of the present disclosure. As shown in FIG. 5 , an embodiment of the present disclosure provides a flexible display device, including: a flexible display module 1 , a track 2 , a support member, a motor slider 4 , a bracket 5 , a movable casing 8 , and a fixed casing 10 . The flexible display module 1 includes a flexible screen. One side of the flexible display module 1 is a display side surface, which can support the flexible display device to realize functions such as screen display and user interaction. The opposite side surface of the flexible display module 1 is a non-display side surface. The flexible display module 1 can slide along with the movement of the track 2, so as to switch the flexible display module 1 between the expanded state and the retracted state, thereby changing the display area of the screen of the flexible display device. As shown in Figure 5, the flexible display module 1 can be arranged in the fixed casing 10, and the side surface of the flexible display module 1 in the fixed casing 10 can be in a "U" shape. end (i.e. one end of the "U" shape) and tail end (i.e. the other end of the "U" shape), the head end of the flexible display module 1 is fixed, and the tail end of the flexible display module 1 can protrude toward the fixed casing 10. Direction movement to achieve the unfolded state. In the unfolded state of the flexible display module 1, the tail end of the flexible display module 1 remains in the fixed casing 10, and the tail end of the flexible display module 1 can display or not display images. In the unfolded state, the rear end of the flexible display module 1 can move toward the direction of entering the fixed casing 10 to realize the retracted state. A plurality of supports are arranged on the non-display side surface of the flexible display module 1, and the extending direction of the supporting members may intersect with the unfolding direction of the flexible display module 1, as shown in FIG. 1 , the extending direction of the supporting members and the flexible display module The deployment directions of group 1 are perpendicular to each other, which is not limited in the present disclosure. A slot 9 can be set on the track 2, and the support can be stuck in the slot 9, so that the support can move with the movement of the track 2. The support includes a first support 33 and a tail support 3, which are located on the flexible display module. The support member at the tail end of group 1 is the tail support member 3, and other support members except the tail support member 3 can be referred to as the first support member 33, and the structure of the tail support member 3 and the first support member 33 can be the same, or, in Along the unfolding direction of the flexible display module 1 , the width of the rear support member 3 may be greater than that of the first support member 33 to provide better support for the rear end of the flexible display module 1 , which is not limited in the present disclosure. The tail support 3 is connected to the bracket 5, as shown in Figure 1, the bracket 5 is located on the side of the tail support 3 away from the first support 33, and can move with the movement of the flexible display module 1, and the bracket 5 is arranged to move toward the tail The support member 3 provides tensile stress to ensure the force balance at the end of the flexible display module 1 and prevent the flexible display module 1 from wrinkling. During the movement process of the flexible display module 1 switching between the expanded state and the retracted state, the bracket 5 can limit the movement of the tail end of the flexible display module 1, so that the movement process of the flexible display module 1 is smoother. The movable casing 8 is connected with the track 2 and is set to drive the track 2 to move. The motor slider 4 is configured to drive the movable casing 8 to realize the expanded state of the flexible display module 1 ; the motor slider 4 is also configured to drive the movement of the bracket 5 to realize the retracted state of the flexible display module 1 . In the retracted state shown in FIG. 5 , the tail end of the flexible display module 1 can move in the direction of the hollow arrow to switch to the unfolded state. The unfolding process of the flexible display module 1 in Fig. 1 includes: the motor slider 4 moves in the direction of the hollow arrow, drives the sliding casing 8 to move, the sliding casing 8 drives the track 2 to move, the track 2 drives the support to move, and the support drives the flexible The display module 1 moves, and the flexible display module 1 drives the bracket 5 to move, so that the flexible display module 1 is unfolded. Since the bracket 5 is connected to the tail supporting member 3, the bracket 5 can provide tensile stress to the tail end of the flexible display module 1, so as to prevent the flexible display module 1 from wrinkling during movement.

In an exemplary embodiment, the motor slider 4 is not connected to the movable casing 8 , and the motor slider 4 is not connected to the bracket 5 . When the flexible display module 1 is unfolded, there is force conduction between the motor slider 4 and the movable casing 8, and the motor slider 4 can push the movable casing 8 to move; There is force conduction between 4 and the bracket 5, and the motor slider 4 can push the bracket 5 to move.

In an exemplary embodiment, a slide bar 6 may be used to connect the bracket 5 and the tail support 3, and an oblique chute 7 may be provided on the bracket 5, and the extension direction of the oblique chute 7 may intersect the extension direction of the support, One end of the slide bar 6 can be connected with the tail support 3 , and the other end of the slide bar 6 can move in the inclined chute 7 .

As shown in Figure 5, two slide bars 6 are arranged between the bracket 5 and the tail support 3, and these two slide bars 6 can be evenly arranged along the extension direction of the tail support 3, and this arrangement can make the The tensile stress of 5 acts more evenly on the tail end of the flexible display module 1 to ensure that the force on the tail end of the flexible display module 1 is balanced, which not only makes the movement of the flexible display module 1 smoother, but also better avoids flex The display module 1 produces wrinkles during the movement. In practical applications, a plurality of sliding bars 6 may be evenly arranged between the bracket 5 and the tail support 3 as required, and the present disclosure does not limit this. In other embodiments, the bracket 5 and the tail support 3 may be connected through other connection methods, which is not limited in the present disclosure. In an exemplary embodiment, the slide bar 6 and the tail support 3 can be connected by a pin, the other end of the slide bar 6 can be provided with a slide block, the slide block is connected with the inclined chute 7, and can be placed on the inclined chute 7 The inner movement realizes the connection between the bracket 5 and the tail support 3 by using a slider push rod mechanism. In other embodiments, the sliding rod 6 and the tail support 3 may be connected through other connection methods, and the sliding rod 6 and the inclined chute 7 may be connected through other connection methods, which is not limited in the present disclosure.

FIG. 6 is a schematic structural view of a flexible display device in an unfolded state in an embodiment of the present disclosure. As shown in Figure 5, in the retracted state, the position of the slide bar 6 in the inclined chute 7 can be the first position, as shown in Figure 6, in the unfolded state, the position of the slide bar 6 in the inclined chute 7 Can be second position. The first position can be one end of the inclined chute 7, the second position can be the limit position where the sliding bar 6 is located in the inclined chute 7 in the unfolded state, and the second position can be the other end of the inclined chute 7, or can be an inclined slide Any position in slot 7. During the unfolding process of the flexible display module 1, the other end of the sliding rod 6 moves synchronously from the first position to the second position along the inclined chute 7 to drive the bracket 5 to move, and the bracket 5 can move to the flexible display through the sliding rod 6. The tail end of module 1 provides tensile stress. During the retraction process of the flexible display module 1, the other end of the sliding rod 6 moves synchronously from the second position to the first position along the inclined chute 7, and the bracket 5 drives the sliding rod 6 to move to drive the flexible display module 1 to move. , the bracket 5 can provide tensile stress to the rear end of the flexible display module 1 through the sliding rod 6 . In other implementation manners, the shape and extension direction of the inclined chute 7 can be set as required, which is not limited in the present disclosure. During the unfolding process, the slide bar 6 moves from the first position of the inclined chute 7 to the second position, and the bracket 5 can move along the unfolding direction of the flexible display module 1 driven by the slide bar 6 . Under stretching, the flexible display module 1 can maintain a certain tension and remain flat all the time. In the unfolded state shown in FIG. 6 , the tail end of the flexible display module 1 can move in the direction of the hollow arrow to switch to the retracted state. The retracting process of the flexible display module 1 in Fig. 6 includes: the motor slider 4 moves in the direction of the hollow arrow, drives the bracket 5 to move, the bracket 5 drives the slide bar 6 to move in the inclined chute 7, and the slide bar 6 drives the flexible display module 1 moves, the flexible display module 1 drives the support to move, and the support drives the track 2 and the sliding casing 8 to move, so as to realize the retraction of the flexible display module 1. In the process of retracting, because the flexible display module 1 drives the movement of the support, the flexible display module 1 is the force applying party, and the support is the force receiving party, which is equivalent to the movement mode of "the surface drives the line". The resistance will be smaller, which helps to save the power consumption of the motor. After actual calculation, under the condition that other structures are the same, the driving force required to drive the flexible display module 1 to retract in this embodiment is higher than that required to drive the flexible display module 1 in Figure 1. Mod 1' requires 50% less drive to retract. In addition, the flexible display module 1 acts as a force applying force to apply compressive stress to the support. This compressive stress will make the connection between the flexible display module 1 and the support closer, avoiding the gap between the flexible display module 1 and the support. The risk of glue opening is reduced, which helps to prolong the service life of the flexible display device. In both unfolded and retracted states, the bracket 5 can provide tensile stress to the tail of the flexible display module 1, and can always keep the flexible display module 1 flat, which helps to realize the rear display and rear touch of the flexible display device.

In an exemplary embodiment, during the movement of the flexible display module 1 , the ratio of the movement distance of the tail end of the flexible display module 1 to the movement distance of the slider 6 is 2 along the unfolding direction of the flexible display module 1 than 1. Along the unfolding direction of the flexible display module 1, the moving distance of the sliding rod 6 is the same as that of the motor slider 4, which is half of the moving distance of the tail end of the flexible display module 1. This design reduces the motor sliding distance. The movement distance of the block 4 helps to save the internal space of the flexible display device, and provides more possibilities for the internal design of the flexible display device. By setting the unfolded length of the flexible display module 1 to be greater than that, in other embodiments, the distance between the movement distance of the tail end of the flexible display module 1 and the movement distance of the slide bar 6 along the unfolding direction of the flexible display module 1 can be set as required. Ratio, the present disclosure is not limited thereto.

Fig. 7 is a comparison diagram of the movement distances of the flexible display module and the slider along the deployment direction of the flexible display module in an exemplary embodiment, showing a schematic cross-sectional view of the flexible display device in a deployed state and a retracted state. A on the upper side in FIG. 7 is a schematic cross-sectional view of the flexible display device in a retracted state, and B on the lower side in FIG. 7 is a schematic cross-sectional view of the flexible display device in an unfolded state, both of which are simplified illustrations of relevant components. The head end of the flexible display module 1 can be fixed on the fixed casing 10, as shown in A in Figure 7, in the process of switching from the retracted state to the unfolded state, the support can drive the slide bar 6 to move in the direction of the hollow arrow to realize Unfolding, as shown by B in FIG. 7 , in the process of switching from the unfolded state to the retracted state, the slide bar 6 can drive the flexible display module 1 to move in the direction of the hollow arrow to achieve retraction. As shown in Figure 7, during the movement process of switching between the unfolded state and the retracted state, along the unfolding direction of the flexible display module 1, the movement distance of the slider 6 can be L1, and the movement distance of the tail end of the flexible display module 1 L1 can be doubled, and the moving distance of the flexible display module 1 can be twice the moving distance of the slider 6 . By setting the slide bar 6, the degree of freedom of the tail end of the flexible display module 1 moving along the thickness direction of the flexible display module 1 can be constrained to ensure that the tail end of the flexible display module 1 moves along the unfolding direction, and the flexible display module can be avoided. The tail end of the flexible display module 1 is lifted to ensure that the tail end of the flexible display module 1 is flat, which is beneficial to realize the rear display and rear touch control of the flexible display device.

Fig. 8 is a structural comparison diagram of the sliding rod in the deployed state and retracted state in the exemplary embodiment. For convenience of comparison, only part of the structure of the flexible display device is shown in FIG. 8 . As shown in FIG. 8 , the first direction X can be the unfolding direction of the flexible display module 1 , and the second direction Y can be perpendicular to the first direction X. The length of the slide bar 6 can be L2, the first angle between the extension direction of the inclined chute 7 and the second direction Y can be α1, and the distance that the slide bar 6 can move in the inclined chute 7 can be L3, namely The distance between the first position and the second position along the direction of the chute 7 may be L3. In the withdrawn state, the slider is located at the first position of the inclined chute 7 , and at this time, the second included angle between the extending direction of the sliding rod 6 and the first direction X may be α2. Given that the moving distance of the slide bar 6 along the first direction X is L1, the dimensional relationship of each part satisfies the following relationship:

(L1+L2*cosα2) ² −(L3*sinα1) ² =(L2) ² −(L2*sinα2−L3*cosα1) ² .

Although the embodiments disclosed in the present invention are as above, the described content is only an embodiment adopted for understanding the present invention, and is not intended to limit the present invention. Anyone skilled in the field of the present invention can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed by the present invention, but the patent protection scope of the present invention must still be The scope defined by the appended claims shall prevail.

Claims (10)

1. A flexible display device, characterized in that it comprises: a flexible display module, a track, a support, a bracket, a motor slider and a movable casing; The flexible display module includes a head end and a tail end arranged oppositely, and the head end of the flexible display module is fixed; The support is located on the non-display side surface of the flexible display module, the support is connected with the flexible display module and the track, and the support can move under the drive of the track; the The support includes a first support and a tail support, the tail support is connected to the tail end of the flexible display module; The bracket is located on the side of the tail support away from the first support, the bracket is connected to the tail support, and is configured to provide tensile stress to the tail support; The movable casing is connected to the track and configured to drive the track to move; The motor slider is configured to drive the movable casing to move to realize the unfolded state of the flexible display module; the motor slider is also configured to drive the bracket to move to realize the flexible display module Reclaim status. 2. The flexible display device according to claim 1, wherein the tail support is connected to the bracket through a slide bar; The bracket is provided with an inclined chute, the extending direction of the inclined chute intersects with the extending direction of the support member, one end of the sliding rod is connected with the tail support member, and the other end of the sliding rod can Move in the inclined chute. 3. The flexible display device according to claim 2, wherein at least two slide bars are arranged between the tail support and the bracket, and the at least two slide bars are arranged along the tail support. The direction of extension is evenly distributed. 4 . The flexible display device according to claim 2 , wherein the slider is connected to the inclined chute through a slider, and the slider can move in the inclined chute. 5. The flexible display device according to claim 4, wherein the inclined slide groove includes a first position and a second position; when the flexible display module is retracted, the slider is located at the A first position: when the flexible display module is in an unfolded state, the slider is located at the second position. 6. The flexible display device according to claim 5, wherein the movement of the slider in the inclined chute is synchronized with the movement of the flexible display module. 7. The flexible display device according to claim 6, characterized in that, during the movement of the flexible display module, along the unfolding direction of the flexible display module, the tail end of the flexible display module The ratio of the moving distance to the moving distance of the slider is 2 to 1. 8. The flexible display device according to claim 7, wherein the moving distance of the slider along the first direction is L1, the first direction is the unfolding direction of the flexible display module, and the second direction is vertical in the first direction; the length of the slide bar is L2; the distance between the first position and the second position along the direction of the inclined chute is L3; the extending direction of the inclined chute is the same as that of the second The first included angle between the directions is α1; when the slider is in the first position, the second included angle between the extension direction of the slider and the first direction is α2; the dimensions of each part Satisfy the following relationship: (L1+L2*cosα2) ² −(L3*sinα1) ² =(L2) ² −(L2*sinα2−L3*cosα1) ² . 9. The flexible display device according to claim 1, wherein a slot is provided on the track; the support member includes a support bar and hooks on both sides of the support bar; The support bar is connected to the non-display side surface of the flexible display module, and the hook is connected to the slot. 10. The flexible display device according to claim 1, wherein the flexible display device further comprises a fixed casing, the flexible display module is located in the fixed casing, and the head end of the flexible display module fixed on the casing.

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