Flexible display devices

Abstract

The present application provides a flexible display device. The flexible display device includes a flexible display panel, an auxiliary structure, a first scroll and a driving unit. The flexible display panel includes a first end and a second end. The auxiliary structure includes a third end and a fourth end, and the fourth end is connected to the second end. The first scroll is connected to the first end. When the driving unit drives the flexible display panel to switch from an unfolded state to a curled state and drives the auxiliary structure to switch from an extended state to a folded state, the fourth end is driven to move in a direction close to the first scroll and the first scroll rotates, driving the second end to move in a direction close to the first scroll; when the driving unit drives the flexible display panel to switch from a curled state to an unfolded state and drives the auxiliary structure to switch from a folded state to an extended state, the first scroll is driven to rotate, so that the flexible display panel is separated from the first scroll, and the fourth end is driven to move in a direction away from the first end, so as to drive the second end to move in a direction away from the first scroll.

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 rollable flexible display device is small in size when rolled up, making it easy for users to carry. It is widely used in many electronic devices such as mobile communication terminals, tablet computers, e-books, navigation devices, etc.

[0003] The flexible display panel of the flexible display device is relatively flexible. When in an unfolded state, the flexible display panel is prone to unevenness or distortion, which affects the user experience. Summary of the invention

[0004] The embodiment of the present application provides a flexible display device. The flexible display device includes:

[0005] A flexible display panel having an unfolded state and a rolled state, wherein the flexible display panel comprises a first end and a second end opposite to the first end;

[0006] an auxiliary structure having an extended state and a folded state, the auxiliary structure comprising a third end and a fourth end opposite to the third end, the fourth end being connected to the second end;

[0007] a first reel connected to the first end;

[0008] driving unit; when the driving unit drives the flexible display panel to switch from the unfolded state to the rolled state and drives the auxiliary structure to switch from the extended state to the folded state, the driving unit drives the fourth end to move in the direction close to the first scroll, drives the first scroll to rotate, so as to drive the second end to move in the direction close to the first scroll, and makes the flexible display panel wound on the first scroll; when the driving unit drives the flexible display panel to switch from the rolled state to the unfolded state and drives the auxiliary structure to switch from the folded state to the extended state, the driving unit drives the first scroll to rotate, so that the flexible display panel wound on the first scroll is separated from the first scroll, and drives the fourth end to move in the direction away from the first end, so as to drive the second end to move in the direction away from the first scroll.

[0009] In one embodiment, the auxiliary structure includes a rod portion, and the flexible display device further includes a fixedly arranged shaft rod, and the rod portion can rotate around the shaft rod;

[0010] When the driving unit drives the auxiliary structure to switch to the extended state, the driving unit drives the rod to rotate around the shaft so that the fourth end moves in a direction away from the first scroll; when the driving unit drives the auxiliary structure to switch to the folded state, the driving unit drives the rod to rotate around the shaft so that the fourth end of the rod moves in a direction close to the first scroll.

[0011] In one embodiment, the flexible display device further comprises a connecting rod, the connecting rod is provided with a through slot, the fourth end of the rod portion is connected to the through slot so as to be relatively movable and relatively rotatable; the second end is connected to the connecting rod, and the fourth end of the rod portion is connected to the second end through the connecting rod;

[0012] When the fourth end of the rod portion moves in a direction away from or close to the first reel, the fourth end of the rod portion moves and rotates relative to the through slot, driving the connecting rod to move in a direction away from or close to the first reel.

[0013] In one embodiment, the rod portion is provided with a strip groove, the shaft rod passes through the strip groove, and the strip groove can move and rotate relative to the shaft rod;

[0014] When the driving unit drives the auxiliary structure to switch to the folded state, the driving unit drives the strip groove to rotate and move relative to the shaft, so that the distance between the third end of the rod and the shaft increases, and drives the fourth end of the rod to move in a direction close to the first reel;

[0015] When the driving unit drives the auxiliary structure to switch to the extended state, the strip groove is driven to rotate and move relative to the shaft, so that the distance between the third end of the rod and the shaft is reduced, and the fourth end of the rod is driven to move in a direction away from the first reel.

[0016] In one embodiment, in the extension direction of the rod, the distance from the end of the strip groove close to the third end of the rod to the third end of the rod is smaller than the distance from the end of the strip groove away from the third end of the rod to the fourth end of the rod.

[0017] In one embodiment, the auxiliary structure includes a first rod portion and a second rod portion that are cross-arranged, and the shaft rod passes through the strip grooves of the first rod portion and the strip grooves of the second rod portion;

[0018] When the driving unit drives the auxiliary structure to switch to the folded state, the strip groove of the first rod portion and the strip groove of the second rod portion are driven to rotate and move relative to the shaft, so that the distances between the third end of the first rod portion and the third end of the second rod portion and the shaft are increased, the distance between the third end of the first rod portion and the third end of the second rod portion is increased, and the fourth end of the first rod portion and the fourth end of the second rod portion move in a direction close to the first reel;

[0019] When the driving unit drives the auxiliary structure to switch to the extended state, the strip groove of the first rod part and the strip groove of the second rod part are driven to rotate and move relative to the shaft rod, so that the distance between the third end of the first rod part and the third end of the second rod part and the shaft rod are reduced, and the distance between the third end of the first rod part and the third end of the second rod part is reduced, driving the fourth end of the first rod part and the fourth end of the second rod part to move in the direction away from the first reel.

[0020] In one embodiment, the driving part includes a first motor, a transmission member and a connecting part; the connecting part is rotatably connected to the third end of the rod, and the connecting part cooperates with the transmission member;

[0021] The first motor drives the transmission member to rotate, the transmission member drives the connecting portion to move relative to the shaft, and the connecting portion drives the third end of the rod to move relative to the shaft.

[0022] In one embodiment, the flexible display device further includes a receiving portion; the shaft, the first scroll and the third end are received in the receiving portion;

[0023] The flexible display device also includes a connecting rod fixedly connected to the shaft rod, and the shaft rod is fixedly installed in the receiving portion through the connecting rod; at least two mounting holes are provided on the connecting rod, and the flexible display device also includes connecting pieces corresponding to the mounting holes one by one, and each of the connecting pieces passes through the corresponding mounting holes to fix the connecting rod in the receiving portion.

[0024] In one embodiment, the flexible display device further includes a flexible backplane, the flexible backplane has an unfolded state and a rolled state; the driving unit drives the flexible backplane to switch between the rolled state and the unfolded state;

[0025] When the flexible back plate and the flexible display panel are in an unfolded state, the auxiliary structure is located between the flexible back plate and the flexible display panel.

[0026] In one embodiment, the flexible display device further includes a second scroll, the driving unit includes a power assembly, and the power assembly includes a second motor, a first gear, and a second gear; one end of the flexible back plate is connected to the second scroll; the first gear is meshed with the second gear, the first gear drives the first scroll to rotate, and the second gear drives the second scroll to rotate; the second motor drives one of the first gear or the second gear to rotate;

[0027] The second motor runs, driving the first gear and the second gear to rotate, and then driving the first scroll and the second scroll to rotate, so that the flexible display panel in the unfolded state is wound around the first scroll, and the flexible back panel in the unfolded state is wound around the second scroll, or the flexible display panel wound around the first scroll is detached from the first scroll, and the flexible back panel wound around the second scroll is detached from the second scroll.

[0028] In one embodiment, the flexible display device further comprises a zipper assembly, and the zipper assemblies are respectively provided on opposite sides of the flexible display panel; the zipper assembly comprises a first zipper strip, a second zipper strip and a fixedly arranged locking portion, the first zipper strip is arranged on the side of the flexible display panel, and the second zipper strip is arranged on the side of the flexible back panel;

[0029] When the driving unit drives the flexible display panel and the flexible back panel to switch from the unfolded state to the rolled state at the same time, the first zipper strip and the second zipper strip are driven to roll up, and the first zipper strip and the second zipper strip move relative to the locking unit, and the locking unit separates the first zipper strip and the second zipper strip in the fastened state;

[0030] When the driving unit simultaneously drives the flexible display panel and the flexible back panel to switch from a curled state to an unfolded state, the first zipper strip and the second zipper strip in the curled state are driven to unfold, and the first zipper strip and the second zipper strip move relative to the locking unit, and the locking unit fastens the first zipper strip and the second zipper strip.

[0031] In one embodiment, the flexible display device further includes a receiving portion; the first scroll and the third end are received in the receiving portion;

[0032] When the flexible display panel is in a curled state and the auxiliary structure is in a folded state, the flexible display panel, the driving unit and the auxiliary structure are accommodated in the accommodation unit; when the flexible display panel is in an unfolded state and the auxiliary structure is in an extended state, the flexible display panel and the auxiliary structure at least partially expose the accommodation unit, and the driving unit is accommodated in the accommodation unit.

[0033] The main technical effects achieved by the embodiments of the present application are:

[0034] In the flexible display device provided by the embodiment of the present application, when the driving unit drives the flexible display panel to switch to the unfolded state and drives the auxiliary structure to switch to the extended state, the fourth end of the auxiliary structure drives the second end of the flexible display panel to move in the direction away from the first scroll, so that the flexible display panel has better flatness in the unfolded state, avoiding the situation where the flexible display panel is uneven or twisted when unfolded due to its low flexibility, which helps to improve the user experience; when the driving unit drives the flexible display panel to switch to the curled state and drives the auxiliary structure to switch to the folded state, the flexible display panel is wound around the first scroll, so that the volume of the flexible display device can be smaller, which is convenient for users to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a structural schematic diagram of a flexible display device provided by an exemplary embodiment of the present application when a flexible display panel is in an unfolded state;

[0036] Figure 2 is a structural schematic diagram of a flexible display device provided by an exemplary embodiment of the present application when the flexible display panel is in a rolled state;

[0037] Figure 3 is a schematic structural diagram of an auxiliary structure provided by an exemplary embodiment of the present application in an extended state;

[0038] Figure 4 is a schematic structural diagram of an auxiliary structure provided by an exemplary embodiment of the present application in a folded state;

[0039] Figure 5 is a schematic diagram of an exploded structure of a flexible display device provided by an exemplary embodiment of the present application;

[0040] Figure 6 is a partial structural schematic diagram of a flexible display device provided by an exemplary embodiment of the present application;

[0041] Figure 7 is a partial structural schematic diagram of a flexible display device provided by an exemplary embodiment of the present application;

[0042] Figure 8 is a partial structural diagram of a flexible display device provided by an exemplary embodiment of the present application;

[0043] Fig. 9 yes Figure 8 A magnified image of area A;

[0044] Fig.10 is a schematic structural diagram of a flexible display device provided by an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0045] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0046] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms of "a", "said" and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0047] It should be understood that although the terms first, second, third, etc. may be used in the present application to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0048] The embodiment of the present application provides a flexible display device. The flexible display device in the embodiment of the present application is described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features in the following embodiments can complement or combine with each other.

[0049] The present application embodiment provides a flexible display device. Figures 1 to 5 The flexible display device 100 includes a flexible display panel 10, an auxiliary structure 20, a first scroll 325 and a driving unit 30.

[0050] The flexible display panel 10 has an unfolded state and a rolled state. Figure 1 In the flexible display device 100 shown, the flexible display panel 10 is in an unfolded state, and the flexible display device can be in a display state at this time; Figure 2 In the flexible display device 100 shown, the flexible display panel 10 is in a folded state. The flexible display panel 10 includes a first end 11 and a second end 12 opposite to the first end 11 .

[0051] The auxiliary structure 20 has an extended state and a folded state. The auxiliary structure 20 includes a third end and a fourth end opposite to the third end, and the fourth end is connected to the second end 12 . Figure 1 and Figure 3 In the flexible display device 100 shown, the auxiliary structure 20 is in an extended state; Figure 2 and Figure 4 In the flexible display device 100 shown, the auxiliary structure 20 is in a folded state.

[0052] When the driving unit 30 drives the flexible display panel 10 to switch from the unfolded state to the rolled state and drives the auxiliary structure 20 to switch from the extended state to the folded state, the fourth end of the auxiliary structure 20 is driven to move in a direction close to the first scroll 325, and the first scroll 325 is driven to rotate, so as to drive the second end 12 to move in a direction close to the first scroll 325, and the flexible display panel 10 is wound on the first scroll 325. It should be noted that the rotation of the first scroll 325 and the movement of the fourth end of the auxiliary structure 20 in a direction close to the first scroll 325 can both drive the second end of the flexible display panel to move in a direction close to the first scroll 325. When the driving unit 30 drives the flexible display panel 10 to switch from a rolled state to an unfolded state and drives the auxiliary structure 20 to switch from a folded state to an extended state, the first scroll 325 is driven to rotate, so that the flexible display panel 10 wound on the first scroll 325 is separated from the first scroll 325, and the fourth end is driven to move in a direction away from the first end 11, so as to drive the second end 12 to move in a direction away from the first end 11.

[0053] In the flexible display device 100 provided in the embodiment of the present application, when the driving unit 30 drives the flexible display panel 10 to switch to the unfolded state and drives the auxiliary structure 20 to switch to the extended state, the fourth end of the auxiliary structure 20 drives the second end 12 of the flexible display panel 10 to move in a direction away from the first scroll 325, and the auxiliary structure 20 applies a pulling force to the flexible display panel 10, so that the flexible display panel has better flatness in the unfolded state, avoiding the situation where the flexible display panel is uneven or twisted when unfolded due to low flexibility, which helps to improve the user experience; when the driving unit 30 drives the flexible display panel 10 to switch to the curled state and drives the auxiliary structure 20 to switch to the folded state, the flexible display panel 10 is wound around the first scroll 325, so that the volume of the flexible display device 100 can be smaller, which is convenient for users to carry.

[0054] The distance between the third end of the auxiliary structure 20 and the first reel 325 is very small. When the auxiliary structure 20 is in the unfolded state, the distance between the third end of the rod 201 and the first reel 325 is smaller than the distance between the fourth end of the rod 201 and the first reel 325. The material of the auxiliary structure 20 is a hard material.

[0055] In one embodiment, when the auxiliary structure 20 is in the extended state, only the first end of the flexible display panel 10 is connected to the first scroll 325, and the other regions are separated from the first scroll 325. The distance between the fourth end of the auxiliary structure 20 and the first scroll 325 is equal to the dimension of the flexible display panel 10 in the second direction when in the unfolded state, so that the flexible display panel 10 has good flatness and no wrinkles when in the unfolded state.

[0056] The first end 11 of the flexible display panel 10 is connected to the first scroll 325. When the first scroll 325 rotates, the flexible display panel 10 is wound around the first scroll 325, or the flexible display panel 10 is separated from the first scroll 325. The second end 12 of the flexible display panel 10 is driven to move by the cooperation of the auxiliary structure 20 and the first scroll 325, so as to realize the switching of the unfolded state and the rolled state of the flexible display panel 10. The rotation direction of the first scroll 325 when the flexible display panel 10 is switched from the rolled state to the unfolded state is opposite to the rotation direction of the first scroll 325 when the flexible display panel 10 is switched from the unfolded state to the rolled state.

[0057] When the flexible display panel 10 is in the unfolded state and the rolled state, the size of the flexible display panel 10 in the extension direction of the first end 11 (hereinafter referred to as the first direction) remains unchanged; in the extension direction of the edge of the flexible display panel when the flexible display panel 10 is in the unfolded state (hereinafter referred to as the second direction, perpendicular to the first direction), the size of the flexible display panel 10 in the unfolded state and the rolled state is different. The size of the flexible display panel 10 in the second direction when it is in the rolled state is smaller than the size in the second direction when it is in the unfolded state. The space occupied by the flexible display panel 10 in the unfolded state is larger than the space occupied in the rolled state. The size of the auxiliary structure 20 in the second direction when it is in the extended state is larger than the size in the second direction when it is in the folded state. The space occupied by the auxiliary structure 20 in the extended state is larger than the space occupied in the folded state.

[0058] In one embodiment, the flexible display device 100 further includes a receiving portion 40. The first scroll 325, the driving portion 30 and the third end of the auxiliary structure 20 can be always received in the receiving portion 40. When the flexible display panel 10 is in a rolled state and the auxiliary structure 20 is in a folded state, the flexible display panel 10, the driving portion 30 and the auxiliary structure 20 are received in the receiving portion 40; when the flexible display panel 10 is in an unfolded state and the auxiliary structure 20 is in an unfolded state, the flexible display panel 10 and the auxiliary structure 20 at least partially expose the receiving portion 40. In this way, when the flexible display device is not displayed, the flexible display panel 10, the driving portion 30 and the auxiliary structure 20 are accommodated in the receiving portion 40, and when the flexible display device is not displayed, the driving portion 30 is received in the receiving portion, which helps to improve the aesthetics of the flexible display device 100. The receiving portion 40 may be provided with an opening, and the flexible display panel 10 and the auxiliary structure 20 expose the receiving portion 40 through the opening. The first end of the flexible display panel 10 is always received in the receiving portion 40, and the second end moves relative to the receiving portion 40 to switch between the unfolded state and the rolled state, that is, the flexible display panel switches between the unfolded state and the rolled state by moving to one side.

[0059] In one embodiment, the receiving portion 40 is assembled from a first shell 41 and a second shell 42. This arrangement facilitates the installation of the driving portion 30, the third end of the auxiliary structure 20, the first scroll 325 and the first end of the flexible display panel 10 in the receiving portion 40, thereby reducing the complexity of assembly.

[0060] In one embodiment, see Figure 5 , the flexible display device 100 further includes a fixedly arranged shaft 50, which can be fixedly installed in the receiving portion 40, and the shaft 50 cannot rotate or move relative to the receiving portion 40. The flexible display device 100 further includes a connecting rod 51 fixedly connected to the shaft 50, and the shaft 50 is fixedly installed in the receiving portion 40 through the connecting rod 51. The connecting rod 51 may be provided with at least two mounting holes, and the flexible display device 100 further includes connecting members corresponding to the mounting holes one by one, and each connecting member is respectively passed through the corresponding mounting hole to fix the connecting rod 51 to the receiving portion 40. The connecting member may be, for example, a screw. In some embodiments, the shaft 50 is fixed to the first shell 41 of the receiving portion 40 through the connecting rod 51; the connecting rod 51 may be provided with two mounting holes.

[0061] The auxiliary structure 20 includes a rod 201, and the rod 201 can rotate around the shaft 50. The third end of the rod 201 is connected to the driving unit 30. The third end of the rod 201 is close to the first end of the flexible display panel 10. The auxiliary structure includes the rod 201, and the rod 201 includes a third end and a fourth end.

[0062] When the driving unit 30 drives the auxiliary structure 20 to switch to the extended state, it drives the rod portion 201 to rotate around the shaft 50 so that the fourth end of the rod portion 201 moves in a direction away from the first scroll 325; when the driving unit drives the auxiliary structure 20 to switch to the folded state, it drives the rod portion 201 to rotate around the shaft 50 so that the fourth end of the rod portion 201 moves in a direction close to the first scroll 325.

[0063] When the flexible display panel 10 is switched to the unfolded state and the auxiliary structure 20 is switched to the extended state, the fourth end of the rod 201 drives the second end 12 of the flexible display panel 10 to move in a direction away from the first scroll 325, so that the flexible display panel 10 is unfolded. In this way, the size of the rod 201 in the second direction increases, driving the size of the flexible display panel 10 in the second direction to increase, so that the flatness of the flexible display panel 10 in the unfolded state is better. When the flexible display panel 10 is switched to the curled state and the auxiliary structure 20 is switched to the folded state, the fourth end of the rod 201 moves in a direction close to the first scroll 325, and at the same time, the second end 12 of the flexible display panel 10 moves in a direction close to the first scroll 325, so that the size of the flexible display panel 10 and the rod 201 in the second direction can be reduced, thereby reducing the volume of the flexible display device.

[0064] In one embodiment, the auxiliary structure 20 includes at least two rods 201. The fourth ends of the two rods 201 drive the second end 12 of the flexible display panel 10 to move, which helps to improve the unevenness of the flexible display panel 10 when it is unfolded.

[0065] In one embodiment, the flexible display device 100 further includes a connecting rod 321, a through slot 327 is provided on the connecting rod 321, and the fourth end of the rod 201 is connected to the through slot 327 so as to be relatively movable and relatively rotatable; the second end 12 is connected to the connecting rod 321, and the fourth end of the rod 201 is connected to the second end 12 through the connecting rod 321. When the fourth end of the rod 201 moves away from or close to the first scroll 325, the fourth end of the rod 201 moves and rotates relative to the through slot 327. The extending direction of the through slot 327 is the same as the extending direction of the connecting rod 321. The connecting rod 321 is made of a non-flexible material, for example, the material of the connecting rod 321 is metal or plastic.

[0066] With such arrangement, when the fourth end of the rod 201 moves in a direction away from or close to the first scroll 325, the fourth end of the rod 201 moves and rotates relative to the connecting rod 321, and the rod 201 drives the connecting rod 321 to move in a direction away from or close to the first scroll 325, and the second end of the flexible display panel 10 moves with the connecting rod 321. Since the second end 12 is connected to the connecting rod 321, when the rod 201 moves relative to the connecting rod 321, the second end of the flexible display panel 10 will not move relative to the connecting rod 321, and the flexible display panel will not wrinkle, which can avoid the situation where the fourth end is directly connected to the second end 12, causing the flexible display panel 10 to wrinkle when the rod 201 moves.

[0067] In one embodiment, the rod 201 is provided with a strip groove, the shaft 50 is penetrated by the strip groove, and the strip groove can move and rotate relative to the shaft 50. When the driving unit 30 drives the auxiliary structure 20 to switch to the folded state, the strip groove is driven to rotate and move relative to the shaft, so that the distance between the third end of the rod 201 and the shaft 50 increases, and the fourth end of the rod 201 moves toward the direction close to the first scroll 325; when the driving unit 30 drives the auxiliary structure 20 to switch to the extended state, the strip groove is driven to rotate and move relative to the shaft 50, so that the distance between the third end of the rod 201 and the shaft 50 decreases, and the fourth end of the rod 201 moves away from the first scroll 325.

[0068] By providing a strip groove on the rod portion 201, when the auxiliary structure 20 is switched to the folded state, the distance between the shaft rod 50 and the third end of the rod portion 201 increases, and the distance between the shaft rod 50 and the fourth end of the rod portion 201 decreases, so that the distances between the third end and the fourth end of the rod portion 201 and the edge on the same side of the flexible display panel are both smaller, thereby avoiding a larger distance between the third end or the fourth end of the rod portion 201 and the edge on the same side of the flexible display panel, which would result in a larger volume of the flexible display device when the flexible display panel is in the rolled state, and thus helping to reduce the volume of the flexible display device when the flexible display panel is in the rolled state.

[0069] In one embodiment, in the extension direction of the rod 201, the distance between the end of the strip groove close to the third end of the rod 201 and the third end of the rod 201 is smaller than the distance between the end of the strip groove far from the third end of the rod 201 and the fourth end of the rod 201. When the auxiliary structure 20 is switched to the extended state, the strip groove moves relative to the shaft 50, so that the end of the strip groove close to the third end moves toward the direction close to the shaft 50; by setting the distance between the end of the strip groove close to the third end of the rod 201 and the third end of the rod 201 to be smaller than the distance between the end of the strip groove far from the third end of the rod 201 and the fourth end of the rod 201, when the auxiliary structure is in the extended state, the distance between the fourth end of the rod 201 and the shaft 50 is larger, thereby increasing the area of ​​the flexible display panel in the unfolded state and improving the size of the display area of ​​the flexible display panel.

[0070] In one embodiment, when the auxiliary structure 20 is in the extended state, the shaft 50 abuts against the end of the strip groove close to the third end, so that the distance between the fourth end of the rod 201 and the shaft 50 is maximized.

[0071] In one embodiment, the distance from the end of the strip groove away from the third end of the rod 201 to the fourth end of the rod 201 is substantially equal to the distance from the end of the strip groove away from the third end of the rod 201 to the third end of the rod 201. When the auxiliary structure 20 is in the folded state, the end of the strip groove away from the third end of the rod 201 abuts against the shaft 50. The distances from the shaft 50 to both ends of the first scroll 325 may be the same. In this way, when the auxiliary structure 20 is in the folded state, the distance from the third end of the rod 201 to the shaft 50 is equal to the distance from the fourth end of the rod 201 to the shaft 50, which helps to reduce the volume of the flexible display device in the rolled state.

[0072] In one embodiment, see Figure 6 The auxiliary structure 20 includes a first rod portion 21 and a second rod portion 22 arranged crosswise. The first rod portion 21 includes a third end 211 and a fourth end 212 opposite to the third end, and the first rod portion 21 is provided with a strip groove 213; the second rod portion 22 includes a third end 221 and a fourth end 222 opposite to the third end, and the second rod portion 22 is provided with a strip groove 223. The shaft 50 is penetrated by the strip groove 213 of the first rod portion 21 and the strip groove 223 of the second rod portion 22, and the strip groove 213 of the first rod portion 21 and the strip groove 223 of the second rod portion 22 can move and rotate relative to the shaft 50.

[0073] When the driving unit 30 drives the auxiliary structure 20 to switch to the folded state, the strip groove 213 of the first rod portion 21 and the strip groove 223 of the second rod portion 22 are driven to rotate and move relative to the shaft rod 50, so that the distance between the third end 211 of the first rod portion 21 and the third end 221 of the second rod portion 22 and the shaft rod 50 increases, the distance between the third end 211 of the first rod portion 21 and the third end 221 of the second rod portion 22 increases, and the fourth end 212 of the first rod portion 21 and the fourth end 222 of the second rod portion 22 move toward the direction close to the first end 11.

[0074] When the driving unit 30 drives the auxiliary structure 20 to switch to the extended state, the strip groove 213 of the first rod portion 21 and the strip groove 223 of the second rod portion 22 are driven to rotate and move relative to the shaft 50, so that the distance between the third end 211 of the first rod portion 21 and the third end 221 of the second rod portion 22 and the shaft 50 is reduced, and the distance between the third end 211 of the first rod portion 21 and the third end 221 of the second rod portion 22 is reduced, driving the fourth end 212 of the first rod portion 21 and the fourth end 222 of the second rod portion 22 to move in a direction away from the first reel 325.

[0075] By arranging the first rod portion 21 and the second rod portion 22 to be cross-arranged, the fourth end of the first rod portion 21 and the fourth end of the second rod portion 22 are both connected to the connecting rod 321. When the auxiliary structure 20 is switched to the extended state, the distance between the fourth end of the first rod portion 21 and the fourth end of the second rod portion 22 increases, and the connecting rod 321 is jointly driven to rotate in a direction away from the first scroll axis 325, so that the moving distances of the two ends of the connecting rod 321 are roughly equal, thereby further ensuring the flatness of the flexible display panel.

[0076] In one embodiment, when the flexible display panel 10 is in a curled state and the auxiliary structure 20 is in a folded state, the third end 211 of the first rod portion 21, the fourth end 212 of the first rod portion 21, the third end 221 of the second rod portion 22, and the fourth end 222 of the second rod portion 22 do not exceed the edge of the flexible display panel 10 located on the same side. In this way, when the flexible display panel is in a folded state, the size of the flexible display device in the first direction is smaller, and the volume of the flexible display device is reduced.

[0077] In one embodiment, when the flexible display panel 10 is in the rolled state and the auxiliary structure 20 is in the extended state, the end of the strip groove 213 of the first rod portion 21 close to the third end of the first rod portion 21 abuts against the shaft 50, and the end of the strip groove 223 of the second rod portion 22 close to the third end of the second rod portion 22 abuts against the shaft 50. When the flexible display panel 10 is in the rolled state and the auxiliary structure 20 is in the folded state, the end of the strip groove 213 of the first rod portion 21 away from the third end of the first rod portion 21 abuts against the shaft 50, and the end of the strip groove 223 of the second rod portion 22 away from the third end of the second rod portion 22 abuts against the shaft 50. Such a configuration helps to prevent the strip groove 213 of the first rod portion 21 and the strip groove 223 of the second rod portion 22 from moving relative to the shaft 50, thereby preventing the first rod portion 21 and the second rod portion 22 from moving relative to the shaft 50 and affecting the flatness of the flexible display panel.

[0078] In one embodiment, see Figure 7 The connecting rod 321 is provided with two through slots 327 arranged at intervals, the fourth end of the first rod portion 21 is connected to one through slot 327 so as to be relatively rotatable and relatively movable, and the fourth end of the second rod portion 22 is connected to the other through slot 327 so as to be relatively rotatable and relatively movable. When the flexible display panel 10 is switched to the unfolded state and the auxiliary structure 20 is switched to the extended state, the fourth end 212 of the first rod portion 21 and the fourth end 222 of the second rod portion 22 drive the connecting rod 321 to move in a direction away from the first end 11, and at the same time, the fourth end 212 of the first rod portion 21 and the fourth end 222 of the second rod portion 22 move and rotate in the corresponding through slots 327, and the distance between the fourth end 212 of the first rod portion 21 and the fourth end 222 of the second rod portion 22 is reduced.

[0079] In one embodiment, the fourth end of the first rod portion 21 and the fourth end of the second rod portion 22 are respectively connected to the connecting rod 321 through a connecting structure 328. The connecting structure 328 includes a connecting column and two limit baffles sleeved on the connecting column. The connecting rod 321 is a hollow structure and opens toward one side of the first reel. The fourth end of the first rod portion 21 and the fourth end of the second rod portion 22 are inserted into the connecting rod 321 through the opening of the connecting rod 321. The connecting column of the connecting structure 328 is penetrated by a through groove 327 and a mounting hole opened on the fourth end of the first rod portion 21, and the two ends of the connecting column are respectively exposed, and the two limit baffles are respectively sleeved on the connecting column and located on both sides of the connecting rod 321, and the connecting column can move and rotate in the through groove 327, so that the connecting structure 328 connects the fourth end of the first rod portion 21 with the connecting rod 321, and the fourth end of the first rod portion 21 can rotate and move relative to the connecting rod 321. The fourth end of the second rod portion 22 is also connected to the connecting rod 321 via the same connecting structure 328 .

[0080] In one embodiment, see again Figure 5 and Figure 6 The driving part 30 includes a first motor 311, a transmission member 312 and a connecting part 313. The connecting part 313 is connected to the third end of the rod 201 so as to be relatively rotatable, and the connecting part 313 cooperates with the transmission member 312. The first motor 311 drives the transmission member 312 to rotate, and the transmission member 312 drives the connecting part 313 to move relative to the shaft 50, so that the connecting part 313 drives the third end of the rod 201 to move relative to the shaft 50. Specifically, the connecting part 313 drives the third end of the rod 201 to move and rotate relative to the shaft 50.

[0081] In one embodiment, the transmission member 312 is a screw rod, and the extension direction of the screw rod is substantially flush with the extension direction of the first end 11. The connecting portion 313 can be threadedly connected to the screw rod. The first motor 311 drives the screw rod to rotate, and the rotation of the screw rod drives the connecting portion 313 to move along the screw rod, thereby driving the third end of the rod 201 to rotate relative to the shaft 50.

[0082] In one embodiment, the driving part 30 includes two sub-driving assemblies 31, wherein one sub-driving assembly 31 drives the first rod 21 to move, and the other sub-driving assembly 31 drives the second rod 22 to move. Each sub-driving assembly 31 includes a first motor 311, a transmission member 312 and a connecting part 313.

[0083] In one embodiment, the first motor 311 and the transmission member 312 are fixed on the inner wall of the first housing 41. In this way, the first motor 311 and the transmission member 312 can be prevented from moving and affecting the operation of the flexible display device.

[0084] In one embodiment, the driving unit 30 includes a power assembly 32 , and the power assembly 32 is connected to the first reel 325 to drive the first reel 325 to rotate; the end of the auxiliary structure 20 and the second end 12 are respectively connected to the connecting rod 321 .

[0085] In one embodiment, see Figure 5 , Figure 8 and Fig. 9 The power assembly 32 includes a second motor 324. The second motor 324 drives the first reel 325 to rotate, and the rotation of the reel 325 causes the flexible display panel 10 in the unfolded state to be wound around the first reel 325, or causes the flexible display panel 10 wound around the first reel 325 to be separated from the first reel 325.

[0086] Thus, the structure of the power assembly is relatively simple and easy to implement.

[0087] In one embodiment, the flexible display device further includes a flexible backplane 60, and the flexible backplane 60 has an unfolded state and a curled state; the driving unit 30 drives the flexible backplane 60 to switch between the curled state and the unfolded state. When the flexible backplane 60 and the flexible display panel 10 are in the unfolded state, the auxiliary structure 20 is located between the flexible backplane 60 and the flexible display panel 10. By setting the flexible backplane 60, when the flexible display panel 10 and the flexible backplane 60 are in the unfolded state, the auxiliary structure 20 is located between the flexible backplane 60 and the flexible display panel 10, and the auxiliary structure 20 is not exposed, which can improve the aesthetics of the flexible display device and improve the user experience; the driving unit 30 can simultaneously drive the flexible display panel 10 and the flexible backplane 60 to switch to the curled state, and the setting of the flexible backplane 60 will not increase the volume of the flexible display device.

[0088] In one embodiment, when the flexible back panel 60 is in a rolled state, the flexible back panel 60 is received in the receiving portion 40 .

[0089] In one embodiment, the power assembly 32 simultaneously drives the flexible display panel 10 and the flexible back plate 60 to switch between the unfolded state and the rolled state. The flexible display device also includes a second scroll 326. The second scroll 326 is accommodated in the accommodating portion 40. The power assembly 32 also includes a first gear 322 and a second gear 323, and one end of the flexible back plate 60 is connected to the second scroll 326. The first gear 322 is meshed with the second gear 323, and the first gear 322 drives the first scroll 325 to rotate, and the second gear 323 drives the second scroll 326 to rotate. The second motor 324 drives one of the first gear 322 or the second gear 323 to rotate.

[0090] Since the first gear 322 is meshed with the second gear 323, when the second motor 324 drives one of the gears to rotate, the gear drives the other gear to rotate, and the rotation directions of the first gear 322 and the second gear 323 are opposite. In the illustrated embodiment, the second motor 324 is connected to the second gear 323 through a conveyor belt, and the second motor 324 drives the second gear 323 to rotate through the conveyor belt, and the rotation of the second gear 323 drives the first gear 322 to rotate. In other embodiments, the second motor 324 can drive the first gear 322 to rotate through the conveyor belt.

[0091] When the second motor 324 is running, the first gear 322 and the second gear 323 rotate, driving the first scroll 325 and the second scroll 326 to rotate, so that the flexible display panel 10 in the unfolded state is wound around the first scroll 325, and the flexible back panel 60 in the unfolded state is wound around the second scroll 326, or the flexible display panel 10 wound around the first scroll 325 is unfolded, and the flexible back panel 60 wrapped around the second scroll 326 is unfolded.

[0092] With such configuration, the flexible backplane 60 and the flexible display panel 10 can be driven to unfold or curl simultaneously by a second motor 324 , which can simplify the structural complexity of the driving unit 30 and reduce the cost of the flexible display device.

[0093] In one embodiment, the flexible display device may be provided with two first gears 322 and two second gears 323. The two first gears 322 are respectively connected to the two ends of the first scroll 325, and the two second gears 323 are respectively connected to the two ends of the second scroll 326. The extension direction of the first scroll 325 and the extension direction of the second scroll 326 may be the same.

[0094] In one embodiment, the second motor 324 , the first gear 322 , and the second gear 323 may be fixedly mounted on the inner wall of the second housing 42 to prevent the second motor 324 , the first gear 322 , and the second gear 323 from moving relative to the second housing 42 .

[0095] In one embodiment, when the flexible display panel is driven to switch to the curled state and the auxiliary structure 20 is switched to the folded state, the operation time of the first motor 311 and the second motor 324 can be controlled so that the operation time of the first motor 311 is slightly earlier than the operation time of the second motor 324, so that the connecting rod 321 first moves in the direction close to the first scroll 325, and then the first scroll 325 rotates to rotate the flexible display panel, so that the connecting rod 321 generates a tensile force on the second end of the flexible display panel 10, thereby ensuring the flatness of each part of the flexible display panel when it is in the curled state and avoiding wrinkles on the flexible display panel.

[0096] In one embodiment, one end of the flexible backplane 60 is connected to the second scroll 326, and the other end of the flexible backplane 60 is connected to the connecting rod 321. The flexible backplane 60 can be bonded to the side of the connecting rod 321 by an adhesive material. In this way, when the fourth ends of the first rod portion 21 and the second rod portion 22 move away from the flexible display panel 10, the flexible backplane 60 is driven to move, so that the flexible backplane 60 is smoothly unfolded, and wrinkles of the flexible backplane 60 are avoided.

[0097] In one embodiment, see again Figure 8 and Fig. 9The flexible display device 100 further includes a zipper assembly 70, and zipper assemblies are respectively provided on opposite sides of the flexible display panel. The zipper assembly 70 includes a first zipper strip 72, a second zipper strip 73, and a fixedly arranged lock portion 71, wherein the first zipper strip 72 is arranged on the side of the flexible display panel 10, and the second zipper strip 73 is arranged on the side of the flexible back panel 60.

[0098] When the driving unit 30 drives the flexible display panel 10 and the flexible back panel 60 to switch from the unfolded state to the rolled state, the first zipper strip 72 and the second zipper strip 73 are rolled, and the first zipper strip 72 and the second zipper strip 73 move relative to the buckle part 71, and the buckle part 71 separates the first zipper strip 72 and the second zipper strip 73 in the buckled state. When the driving unit 30 drives the flexible display panel 10 and the flexible back panel 60 to switch from the rolled state to the unfolded state, the first zipper strip 72 and the second zipper strip 73 in the rolled state are unfolded, and the first zipper strip 72 and the second zipper strip 73 move relative to the buckle part 71, and the buckle part 71 buckles the first zipper strip 72 and the second zipper strip 73.

[0099] With such a configuration, when the flexible display panel 10 and the flexible backplane 60 are unfolded, the first chain 72 and the second chain 73 are buckled to connect the side edges of the flexible display panel 10 and the flexible backplane 60 on the same side, and the flexible display device looks like a complete structure. The user cannot see the auxiliary structure 20 through the side edge, which can improve the aesthetics of the flexible display device 100 and the user's experience. When the flexible display panel 10 and the flexible backplane 60 are curled, the first chain 72 and the second chain 73 are curled and accommodated in the accommodating portion 40, and the accommodating portion 40 will not be exposed.

[0100] In one embodiment, the locking portion 71 can be fixedly disposed on the inner wall of the second housing 42. In this way, the locking portion 71 is fixed, and the first chain 72 and the second chain 73 move. When the first chain 72 and the second chain 73 pass through the locking portion 71, the locking portion 71 causes the first chain 72 and the second chain 73 to engage or separate.

[0101] In one embodiment, see Fig.10 The flexible display device further includes a chip on film (COF) 81, a printed circuit board (PCB) 82, and a control circuit board 90. One end of the chip on film 81 is electrically connected to the flexible display panel, and the other end is electrically connected to one end of the printed circuit board 82. The other end of the printed circuit board 82 is electrically connected to the control circuit board 90. The chip on film 81, the printed circuit board 82, and the control circuit board 90 are accommodated in the accommodating portion 40.

[0102] The flexible display device provided in the embodiment of the present application can be, for example, any device with a display function, such as a mobile phone, a tablet computer, a television, a laptop computer, and a vehicle-mounted device.

[0103] It should be noted that in the accompanying drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. It is also understood that when an element or layer is referred to as being "on" another element or layer, it may be directly on the other element, or there may be an intermediate layer. In addition, it is understood that when an element or layer is referred to as being "under" another element or layer, it may be directly under the other element, or there may be more than one intermediate layer or element. In addition, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it may be the only layer between the two layers or two elements, or there may also be more than one intermediate layer or element. Similar reference numerals throughout the text indicate similar elements.

[0104] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the disclosure disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0105] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A flexible display device, characterized in that: include: A flexible display panel having an unfolded state and a rolled state, the flexible display panel comprising a first end and a second end opposite to the first end; an auxiliary structure having an extended state and a folded state, the auxiliary structure comprising a third end and a fourth end opposite to the third end, the fourth end being connected to the second end; a first reel connected to the first end; a driving unit; when the driving unit drives the flexible display panel to switch from the unfolded state to the rolled state and drives the auxiliary structure to switch from the extended state to the folded state, the driving unit drives the fourth end to move in a direction close to the first scroll, drives the first scroll to rotate, so as to drive the second end to move in a direction close to the first scroll, and makes the flexible display panel wound on the first scroll; when the driving unit drives the flexible display panel to switch from the rolled state to the unfolded state and drives the auxiliary structure to switch from the folded state to the extended state, the driving unit drives the first scroll to rotate, so that the flexible display panel wound on the first scroll is separated from the first scroll, and drives the fourth end to move in a direction away from the first end, so as to drive the second end to move in a direction away from the first scroll; Printed circuit boards; The auxiliary structure includes a rod portion, and the flexible display device also includes a fixed shaft rod, and the rod portion can rotate around the shaft rod; a strip groove is provided on the rod portion, and the shaft rod passes through the strip groove, and the strip groove can move and rotate relative to the shaft rod; When the driving unit drives the auxiliary structure to switch to the folded state, the driving unit drives the strip groove to rotate and move relative to the shaft rod, so that the distance between the third end of the rod and the shaft rod increases, and the fourth end of the rod is driven to move toward the first scroll axis; when the driving unit drives the auxiliary structure to switch to the extended state, the driving unit drives the strip groove to rotate and move relative to the shaft rod, so that the distance between the third end of the rod and the shaft rod decreases, and the fourth end of the rod is driven to move away from the first scroll axis.

2. The flexible display device according to claim 1, characterized in that: The flexible display device further comprises a connecting rod, the connecting rod is provided with a through slot, the fourth end of the rod portion is connected to the through slot so as to be relatively movable and relatively rotatable; the second end is connected to the connecting rod, and the fourth end of the rod portion is connected to the second end through the connecting rod; When the fourth end of the rod portion moves in a direction away from or close to the first reel, the fourth end of the rod portion moves and rotates relative to the through slot, driving the connecting rod to move in a direction away from or close to the first reel.

3. The flexible display device according to claim 1, characterized in that: In the extension direction of the rod, the distance from the end of the strip groove close to the third end of the rod to the third end of the rod is smaller than the distance from the end of the strip groove away from the third end of the rod to the fourth end of the rod.

4. The flexible display device according to claim 1, characterized in that: The auxiliary structure comprises a first rod portion and a second rod portion which are cross-arranged, and the shaft rod passes through the strip groove of the first rod portion and the strip groove of the second rod portion; When the driving unit drives the auxiliary structure to switch to the folded state, the strip groove of the first rod portion and the strip groove of the second rod portion are driven to rotate and move relative to the shaft, so that the distances between the third end of the first rod portion and the third end of the second rod portion and the shaft are increased, the distance between the third end of the first rod portion and the third end of the second rod portion is increased, and the fourth end of the first rod portion and the fourth end of the second rod portion move in a direction close to the first reel; When the driving unit drives the auxiliary structure to switch to the extended state, the strip groove of the first rod part and the strip groove of the second rod part are driven to rotate and move relative to the shaft rod, so that the distance between the third end of the first rod part and the third end of the second rod part and the shaft rod are reduced, and the distance between the third end of the first rod part and the third end of the second rod part is reduced, driving the fourth end of the first rod part and the fourth end of the second rod part to move in the direction away from the first reel.

5. The flexible display device according to claim 1, characterized in that: The driving part includes a first motor, a transmission member and a connecting part; the connecting part is relatively rotatably connected to the third end of the rod, and the connecting part cooperates with the transmission member; The first motor drives the transmission member to rotate, the transmission member drives the connecting portion to move relative to the shaft, and the connecting portion drives the third end of the rod to move relative to the shaft.

6. The flexible display device according to claim 1, characterized in that: The flexible display device further includes a receiving portion; the shaft, the first scroll and the third end are received in the receiving portion; The flexible display device also includes a connecting rod fixedly connected to the shaft rod, and the shaft rod is fixedly installed in the receiving portion through the connecting rod; at least two mounting holes are provided on the connecting rod, and the flexible display device also includes connecting pieces corresponding to the mounting holes one by one, and each of the connecting pieces passes through the corresponding mounting holes to fix the connecting rod in the receiving portion.

7. The flexible display device according to claim 1, characterized in that: The flexible display device further includes a flexible back panel, the flexible back panel having an unfolded state and a rolled state; the driving unit drives the flexible back panel to switch between the rolled state and the unfolded state; When the flexible back plate and the flexible display panel are in an unfolded state, the auxiliary structure is located between the flexible back plate and the flexible display panel.

8. The flexible display device according to claim 7, characterized in that: The flexible display device further includes a second scroll, the driving unit includes a power assembly, and the power assembly includes a second motor, a first gear, and a second gear; one end of the flexible back plate is connected to the second scroll; the first gear is meshed with the second gear, the first gear drives the first scroll to rotate, and the second gear drives the second scroll to rotate; the second motor drives one of the first gear or the second gear to rotate; The second motor runs, driving the first gear and the second gear to rotate, and then driving the first scroll and the second scroll to rotate, so that the flexible display panel in the unfolded state is wound around the first scroll, and the flexible back panel in the unfolded state is wound around the second scroll, or the flexible display panel wound around the first scroll is detached from the first scroll, and the flexible back panel wound around the second scroll is detached from the second scroll.

9. The flexible display device according to claim 7, characterized in that: The flexible display device further includes a zipper assembly, and the zipper assemblies are respectively provided on opposite sides of the flexible display panel; the zipper assembly includes a first zipper strip, a second zipper strip, and a fixedly arranged locking portion, the first zipper strip is arranged on the side of the flexible display panel, and the second zipper strip is arranged on the side of the flexible back panel; When the driving unit drives the flexible display panel and the flexible back panel to switch from the unfolded state to the rolled state at the same time, the first zipper strip and the second zipper strip are driven to roll up, and the first zipper strip and the second zipper strip move relative to the locking unit, and the locking unit separates the first zipper strip and the second zipper strip in the fastened state; When the driving unit simultaneously drives the flexible display panel and the flexible back panel to switch from a curled state to an unfolded state, the first zipper strip and the second zipper strip in the curled state are driven to unfold, and the first zipper strip and the second zipper strip move relative to the locking unit, and the locking unit fastens the first zipper strip and the second zipper strip.

10. The flexible display device according to claim 1, characterized in that: The flexible display device further includes a receiving portion; the first scroll and the third end are received in the receiving portion; When the flexible display panel is in a rolled state and the auxiliary structure is in a folded state, the flexible display panel, the driving unit and the auxiliary structure are accommodated in the accommodation unit; When the flexible display panel is in an unfolded state and the auxiliary structure is in an extended state, the flexible display panel and the auxiliary structure are at least partially exposed through the receiving portion, and the driving portion is received in the receiving portion.

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