CN212229972U

CN212229972U - Flexible display device

Info

Publication number: CN212229972U
Application number: CN202020913320.7U
Authority: CN
Inventors: 冯子康
Original assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Current assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2020-12-25
Anticipated expiration: 2030-05-26

Abstract

The application provides a flexible display device, which comprises a shell, a first supporting member fixedly arranged with the shell, a second supporting member arranged in a sliding manner relative to the first supporting member, a transmission mechanism arranged in the shell and connected with the second supporting member, and a flexible display screen, wherein the first supporting member is fixedly arranged with the shell; the flexible display screen is laid on one side of the first supporting member and one side of the second supporting member, the first end of the flexible display screen is connected with one end, far away from the first supporting member, of the second supporting member, and the second end of the flexible display screen is connected with the transmission mechanism; when the first supporting member and the second supporting member slide relatively, the two ends of the flexible display screen keep moving at the same movement distance in the same time under the action of the transmission mechanism. The flexible display device occupies a small space, and the flexible display screen cannot be subjected to large pulling force in the process of pulling out and retracting the shell.

Description

Flexible display device

Technical Field

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

Background

Flexible display devices are currently receiving a lot of attention because they are flexible, wherein flexible screens are more flexible and bendable than conventional screens, and have a much higher durability than other screens, however, existing flexible screens include foldable and rollable display screens, which reduce the size of the panel to some extent, but still occupy a larger space.

Therefore, the existing flexible display device has the technical problem that the flexible display screen occupies a large space, and needs to be improved.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a flexible display device for alleviate the great technical problem of flexible display screen occupation space among the current flexible display device.

The application provides a flexible display device, includes:

the device comprises a shell, a first supporting member fixedly arranged with the shell, a second supporting member arranged in a sliding manner relative to the first supporting member, and a transmission mechanism arranged in the shell and connected with the second supporting member;

the flexible display screen is laid on one side of the first supporting member and one side of the second supporting member, the first end of the flexible display screen is connected with one end, far away from the first supporting member, of the second supporting member, and the second end of the flexible display screen is connected with the transmission mechanism;

when the first supporting member and the second supporting member slide relatively, the two ends of the flexible display screen keep moving at the same movement distance in the same time under the action of the transmission mechanism.

In the flexible display device of the present application, the transmission mechanism includes a first tensile member, a second tensile member, a sliding member, and a transmission member, the first tensile member is fixed to the second supporting member, the second tensile member is fixed to the sliding member, the sliding member is slidably disposed relative to the housing, the transmission member is connected to the housing, and the second end of the flexible display screen is connected to the sliding member.

In the flexible display device of the present application, the first tensile member includes a first rack fixed to a side of the second support member adjacent to the sliding member, the second tensile member includes a second rack fixed to a side of the sliding member adjacent to the second support member, the transmission member includes a gear and a gear pin passing through the gear center hole lock, the gear pin is installed on the housing, and the gear is engaged with both the first rack and the second rack.

In the flexible display device of the present application, the modulus and the pitch of the first rack and the second rack are equal.

In the flexible display device of the present application, the gear has a module of 0.25 mm to 5 mm.

In the flexible display device of the application, the casing includes relative first curb plate and the second curb plate that sets up, first tensile member is including being close to respectively first curb plate with two first racks of second curb plate, second tensile member is including being close to respectively first curb plate with two second racks of second curb plate, the transmission component is including being close to respectively first curb plate with the first transmission component and the second transmission component of second curb plate, gear pin installs in the first transmission first curb plate inner wall, gear pin installs in the second transmission second curb plate inner wall.

In the flexible display device of the application, the casing includes relative first curb plate and the second curb plate that sets up, the whole face of first rack sets up the second supporting component is close to one side of sliding member, the whole face of second rack sets up the sliding member is close to one side of second supporting component, the gear pin runs through the both ends of gear and installs first curb plate inner wall with second curb plate inner wall.

In the flexible display device of this application, the casing includes bottom plate and relative first curb plate and the second curb plate that sets up, first curb plate with all be provided with first spout, second spout and transmission groove on the inner wall of second curb plate, first spout with the second spout all with the bottom plate is parallel, the transmission groove sets up first spout with between the second spout, the both sides movable mounting of second supporting member is in the first spout, the both sides movable mounting of sliding member is in the second spout, gear round pin movable mounting be in the transmission groove.

In the flexible display device of this application, first curb plate with still be formed with the draw-in groove on the inner wall of second curb plate, first supporting member both ends joint is in the draw-in groove.

In the flexible display device of the present application, the second support member includes first sliders disposed at both sides, the first sliders being embedded in the first sliding grooves, and the slide member includes second sliders disposed at both sides, the second sliders being embedded in the second sliding grooves.

In the flexible display device of this application, flexible display device still include with gear connection's actuating mechanism when the flexible display screen is in the first state, the actuating mechanism drive the gear rotates along the first direction, when the flexible display screen is in the second state, the actuating mechanism drive the gear rotates along the second direction, the first direction is one in clockwise or anticlockwise, the second direction is another in clockwise or anticlockwise.

In the flexible display device of the present application, an upper surface of one of the first support member and the second support member is provided with a plurality of grooves arranged at intervals, and the other one of the first support member and the second support member includes a plurality of comb teeth arranged at intervals, the comb teeth corresponding to the grooves one to one and being embedded in the grooves.

In the flexible display device of the application, the cross-section of recess is for falling trapezoidal, the cross-section of broach is regular trapezoid.

In the flexible display device of the application, the flexible display device further comprises a guide member arranged in the shell, and the second end of the flexible display screen bypasses the guide member and is connected with the transmission mechanism.

In the flexible display device of the application, the guide member is a roller, the second casing comprises a first side plate and a first side plate which are arranged oppositely, a circular protrusion is arranged on one of the first side plate and the inner wall of the second side plate and two end faces of the roller, a circular groove is arranged on the other one of the first side plate and the second side plate, and the circular protrusion is embedded in the circular groove.

Has the advantages that: the application provides a flexible display device, which comprises a shell, a first supporting member fixedly arranged with the shell, a second supporting member arranged in a sliding manner relative to the first supporting member, a transmission mechanism arranged in the shell and connected with the second supporting member, and a flexible display screen, wherein the first supporting member is fixedly arranged with the shell; the flexible display screen is laid on one side of the first supporting member and one side of the second supporting member, the first end of the flexible display screen is connected with one end, far away from the first supporting member, of the second supporting member, and the second end of the flexible display screen is connected with the transmission mechanism; when the first supporting member and the second supporting member slide relatively, the two ends of the flexible display screen keep moving at the same movement distance in the same time under the action of the transmission mechanism. Through the above-mentioned mode of setting up, the flexible display device of this application can be when the flexible display screen needs large-size screen display, the region that will show is pulled out from the casing, make flexible display device's area of display increase, the content that shows can be abundanter, when the flexible display screen needs little screen display, the region that will not show is received in the casing, make flexible display device size less, occupation space is less, and is convenient for carry, the flexible display screen is pulling out and is received the casing in-process, both ends keep the removal of same movement distance in the same time, consequently, can not receive great pulling force, the service life of flexible display screen is improved.

Drawings

The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.

Fig. 1 is an exploded schematic view of a flexible display device according to an embodiment of the present disclosure.

Fig. 2 is a schematic view of an assembly structure of a flexible display device according to an embodiment of the present disclosure.

Fig. 3 is a schematic structural diagram of a second side plate in a flexible display device according to an embodiment of the present application.

Fig. 4 is a schematic side view of a flexible display device in a first state according to an embodiment of the present disclosure.

Fig. 5 is a schematic front view structure diagram of a flexible display device in a first state according to an embodiment of the present application.

Fig. 6 is a schematic side view of a flexible display device in a second state according to an embodiment of the present disclosure.

Fig. 7 is a schematic front view structure diagram of a flexible display device in a second state according to an embodiment of the present application.

Fig. 8 is a schematic cross-sectional view illustrating the matching of the grooves and the comb teeth of the flexible display device according to the embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Fig. 1 is an exploded schematic view of a flexible display device provided in an embodiment of the present application, and fig. 2 is an assembled structural schematic view of the flexible display device provided in the embodiment of the present application, which is shown in fig. 1 and fig. 2, and the flexible display device of the present application includes:

the device comprises a shell 10, a first supporting member 50 fixedly arranged with the shell 10, a second supporting member 60 arranged in a sliding way relative to the first supporting member 50, and a transmission mechanism 30 arranged in the shell 10 and connected with the second supporting member 60;

the flexible display screen 40 is laid on one side of the first supporting member 50 and one side of the second supporting member 60, the first end 41 of the flexible display screen 40 is connected with one end, far away from the first supporting member 50, of the second supporting member 60, and the second end 42 of the flexible display screen 40 is connected with the transmission mechanism 30;

when the first supporting member 50 and the second supporting member 60 slide relatively, both ends of the flexible display screen 40 keep moving for the same movement distance in the same time under the action of the transmission mechanism 30.

The casing 10 includes a bottom plate 13, a first side plate 11 and a second side plate 12, the bottom plate 13 includes a rectangular bottom surface, and a first bending portion and a second bending portion connected to two side edges respectively opposite to the bottom surface, wherein the first bending portion is flat and is perpendicularly connected to one side edge of the bottom surface, the second bending portion is connected to the other side edge of the bottom surface and is bent toward the direction of the first bending portion to form a hollow semi-cylindrical shape, and the first bending portion and the second bending portion are integrally formed with the bottom surface to form the bottom plate 13. The first side plate 11 and the second side plate 12 may be integrally formed with the bottom plate 13, or may be separately formed and then mounted on the bottom plate 13, and the first side plate 11 and the second side plate 12 are flat plates and are respectively perpendicularly connected to the other two opposite sides of the bottom plate 13, so that the first side plate 11 and the second side plate 12 are parallel to each other. The bottom plate 13, the first side plate 11, and the second side plate 12 are connected to each other such that a receiving chamber is formed inside the case 10.

The first support member 50, the second support member 60 and the transmission mechanism 30 are all installed inside the housing 10, wherein the first support member 50 is fixedly installed with the housing 10, the second support member 60 and the transmission mechanism 30 are all movably installed with the housing 10, and the first support member 50 and the second support member 60 are arranged in a relatively sliding manner, that is, the second support member 60 slides back and forth along the length direction of the intersecting edge of the bottom plate 13 and the first side plate 11.

The transmission mechanism 30 is disposed in the housing 10 and connected to the second support member 60, and when the second support member 60 slides relative to the first support member 50, a part of the members in the transmission mechanism 30 and the second support member 60 may simultaneously gradually approach each other along a sliding direction, or simultaneously gradually separate from each other along the sliding direction, where the sliding direction is a length direction of an intersecting side of the bottom plate 13 and the first side plate 11, and is referred to as a horizontal direction in fig. 1. Through the control of the transmission mechanism 30, the two ends of the flexible display screen 40 can keep moving for the same movement distance in the same time, and the moving directions of the two ends are opposite.

The flexible display screen 40 is generally an OLED display screen and has a foldable and rollable function, the flexible display screen 40 is laid on one side of the first support member 50 and the second support member 60, the first end 41 is fixed on one side of the second support member 60 far away from the first support member 50, and the second end 42 is connected with the transmission mechanism 30. The first end 41 may be fixed to the upper surface of the second support member 60, the upper surface of the flexible display screen 40 may display a picture, the second end 42 is connected to the transmission mechanism 30, the second end 42 is not used for displaying a picture, except for the area between the second ends 42, the area may be located outside the housing 10 or inside the housing 10 according to the stretching degree during the rolling process.

According to different requirements of a user, the flexible display screen 40 can be in different states, wherein the first state refers to a large screen display state, the second state is a small screen display state, and in both states, the first end 41 of the flexible display screen 40 is located on the outer surface of the flexible display device and can be used for displaying pictures.

When the flexible display screen 40 is in the first state, as shown in fig. 4 and 5, the first support member 50 and the second support member 60 slide away from each other at the same time, the first end 41 of the flexible display screen 40 slides along with the second support member 60, the second end 42 of the flexible display screen 40 slides along with the transmission mechanism 30, and the two ends are gradually away from each other in the horizontal direction and keep moving at the same movement distance in the same time. The portion of the flexible display 40 located inside the housing 10 is gradually pulled out of the housing 10 along with the cooperation of the second supporting member 60 and the transmission mechanism 30, and the portion of the flexible display is used for displaying images, and after the flexible display is pulled out of the housing 10, the first end 41 and the portion of the flexible display pulled out of the housing 10 jointly display images. When the stretchable regions of the flexible display 40 are all pulled out of the housing 10, the flexible display device can implement a large-screen display, and the display area of the flexible display 40 is the maximum display area.

When the flexible display screen 40 is in the second state, as shown in fig. 6 and 7, the first support member 50 and the second support member 60 slide in a direction to approach each other at the same time, the first end 41 of the flexible display screen 40 slides along with the second support member 60, the second end 42 of the flexible display screen 40 slides along with the transmission mechanism 30, the two ends approach each other gradually in the horizontal direction, and the same movement distance is maintained at the same time. The portion of the flexible display 40 located outside the housing 10 is gradually retracted into the housing 10 along with the cooperation of the second supporting member 60 and the transmission mechanism 30, and at this time, the first end 41 and the portion of the area not drawn into the housing 10 jointly display the picture. When the stretchable regions of the flexible display 40 are all pulled into the housing 10, the flexible display device can implement a small-screen display, where the display area of the flexible display 40 is the initial display area.

Through the above setting mode, flexible display device can switch at first state and second state, when flexible display screen 40 needs large-size screen display, the region that will show is pulled out from casing 10, make flexible display device's display area increase, the content of demonstration can be abundanter, when flexible display screen 40 needs little screen display, the region that will not need the demonstration is received in casing 10, make flexible display device size less, occupation space is less, portable. The flexible display device of the present application can flexibly control the display area of the flexible display screen 40, and the housing 10 can also protect the flexible display screen 40 inside from loss. In addition, in the process that the flexible display screen 40 is drawn in and out of the housing 10, both ends of the flexible display screen 40 are kept moving at the same movement distance within the same time under the action of the transmission mechanism 30, so that the length of the part of the flexible display screen 40 drawn out from the inside of the housing 10 at the first end 41 is equal to the length of the part of the flexible display screen 40 sent out to the outside of the housing 10 at the second end 42 at the same time, and the drawing speed and the sending speed are equal, so that the flexible display screen 40 is prevented from being greatly pulled when being extended outwards and retracted inwards, a protective effect is formed on the flexible display screen 40, and the service life of the flexible display screen 40 is prolonged.

In one embodiment, the transmission mechanism 30 includes a first tensile member 31, a second tensile member 32, a sliding member 34, and a transmission member 33, the first tensile member 31 is fixed to the second supporting member 60, the second tensile member 32 is fixed to the sliding member 34, the sliding member 34 is slidably disposed relative to the housing 10, the transmission member 33 is connected to the housing 10, and the second end 42 of the flexible display 40 is connected to the sliding member 34.

First tensile member 31 is located on a side of second tensile member 32 remote from base plate 11, and transmission member 33 is located between first tensile member 31 and second tensile member 32. Both sides of the sliding member 34 are movably mounted on the inner walls of the first and

second side plates

11 and 12, and both the second supporting member 60 and the sliding member 34 can slide back and forth in the sliding direction in the housing 10. The transmission member 33 is operated to drive the first stretching member 31 and the second stretching member 32 to move in the opposite directions of the sliding direction simultaneously. According to different states of the flexible display screen 40, the directions in which the transmission member 33 drives the first stretching member 31 and the second stretching member 32 to move are different, so that the first stretching member 31 and the second stretching member can gradually approach each other along the sliding direction, and the second stretching member 32 can also gradually separate from each other along the sliding direction.

When the flexible display screen 40 is in the first state, as shown in fig. 4 and 5, the transmission member 33 drives the first stretching member 31 and the second stretching member 32 to move in a direction away from each other, since the second supporting member 60 is fixed to the first stretching member 31, the sliding member 34 is fixed to the second stretching member 32, the first stretching member 31 drives the first end 41 of the flexible display screen 40 fixed to the second supporting member 60, and the second stretching member 32 drives the second end 42 of the flexible display screen fixed to the sliding member 34, so as to pull at least a partial region of the flexible display screen 40 out of the housing 10.

When the flexible display screen 40 is in the second state, as shown in fig. 6 and 7, the transmission member 33 drives the first stretching member 31 and the second stretching member 32 to move in a direction approaching each other, the first stretching member 31 drives the first end 41 of the flexible display screen 40 fixed on the second supporting member 60, and the second stretching member 32 drives the second end 42 of the flexible display screen fixed on the sliding member 34, so as to pull at least a partial region of the flexible display screen 40 into the housing 10.

During the process that the flexible display screen 40 is pulled out or pulled into the housing 10, the transmission member 33 can control the first stretching member 31 and the second stretching member 32 to stop moving at any time, so that the flexible display device can be controlled to select an area with any size between the initial display area and the maximum display area for displaying, and the flexible display device is flexible.

The first supporting member 50 is fixed in the housing 10, so when the first stretching member 31 and the second stretching member 32 in the transmission mechanism 30 move in the sliding direction in opposite directions at the same time, the first supporting member 50 remains stationary, and the second supporting member 60 slides in a direction close to the first supporting member 50, or slides in a direction away from the first supporting member 50, to drive at least a part of the area of the flexible display screen 40 to be drawn into and out of the housing 10, and in order to make the sliding direction of the second supporting member 60 and the sliding member 34 consistent all the time when sliding, a limit structure needs to be provided on the first side plate 11 and the second side plate 12.

As shown in fig. 1 and 3, a first sliding groove 121, a second sliding groove 122 and a transmission groove 123 are disposed on each of the inner wall of the first side plate 11 and the inner wall of the second side plate 12, the first sliding groove 121 and the second sliding groove 122 are both parallel to the bottom plate 13, the transmission groove 123 is disposed between the first sliding groove 121 and the second sliding groove 122, both sides of the second supporting member 60 are movably mounted in the first sliding groove 121, both sides of the sliding member 34 are movably mounted in the second sliding groove 122, and both ends of the transmission member 33 are mounted in the transmission groove 123.

Specifically, the second supporting member 60 is a flat plate structure and is parallel to the bottom plate 13, the first end 41 of the flexible display screen 40 is fixed on the upper surface of the second supporting member 60, so that the second supporting member 60 supports the flexible display screen 40, the second supporting member 60 includes first sliding blocks 311 disposed on two sides, and the first sliding blocks 311 are embedded in the first sliding grooves 121 and can slide back and forth along the length direction of the first sliding grooves 121; the sliding member 34 is also a flat plate structure and is parallel to the bottom plate 13, the second end 42 of the flexible display screen 40 is fixed to the upper surface or the lower surface of the sliding member 34, the sliding member 34 includes second sliding blocks 321 disposed on both sides, and the second sliding blocks 321 are movably embedded in the second sliding grooves 122 and can slide back and forth along the length direction of the second sliding grooves 122.

In the sliding process, since the second supporting member 60 and the sliding member 34 both slide along the length direction of the first sliding groove 121 and the second sliding groove 122, it can be ensured that the flexible display screen 40 outside the housing 10 is also pulled in and out of the housing 10 along the length direction, and when viewing the picture on the flexible display screen 40, the situation of the screen tilting or the unevenness does not occur, and the viewing effect is ensured.

As shown in fig. 1 and 2, the second support member 60 is disposed opposite to the sliding member 34, the first tensile member 31 includes a first rack fixed to a side of the second support member 60 adjacent to the sliding member 34, the second tensile member 32 includes a second rack fixed to a side of the sliding member 34 adjacent to the second support member 60, the transmission member 33 includes a gear 331 and a gear pin 332 passing through a central hole of the gear 331, the gear pin 332 is mounted on the housing 10, and the gear 331 is engaged with both the first rack and the second rack.

The gear pin 332 is movably installed in the transmission groove 123, so that the gear 331 can rotate clockwise or counterclockwise around the axis of the gear 331, the gear 331 is meshed with the first rack and the second rack, and the modulus and the pitch of the gear 331, the first rack and the second rack are equal. Thus, the first rack and the gear 331 cooperate to form a gear pair, and the second rack and the gear 331 also form a gear pair.

As shown in fig. 4 and 6, when the flexible display device switches between the first state and the second state, the first stretching member 31 and the second stretching member 32 are driven to move by the rotation of the gear 331, and the power of the gear 331 is from a driving mechanism (not shown) of the flexible display device, when the flexible display screen 40 is in the first state, the driving mechanism drives the gear 331 to rotate in the first direction, the gear 331 drives the first stretching member 31 to move away from the second stretching member 32 by engaging with the first rack, and drives the second stretching member 32 to move away from the first stretching member 31 by engaging with the second rack, when the flexible display screen 40 is in the second state, the driving mechanism drives the gear 331 to rotate in the second direction, the gear 331 drives the first stretching member 31 to move close to the second stretching member 32 by engaging with the first rack, the second stretching member 32 is moved to a direction close to the first stretching member 31 by engaging with the second rack, wherein the first direction is one of clockwise direction and counterclockwise direction, and the second direction is the other of clockwise direction and counterclockwise direction.

The driving mechanism can be a motor or a speed reducing device connected with the gear 331, the gear 331 can be driven by the motor or the speed reducing device to control the whole motion system by an electric signal, and a user can drive the whole motion system to move only by transmitting the electric signal to the motor through a key, so that the flexible display device can be switched between a contraction display state and a stretching display state.

Since the gear 331 is engaged with both the first rack and the second rack, the moving distances of the second supporting member 60 and the sliding member 34 are always equal in size and opposite in direction, that is, when the flexible display screen 40 is pulled out of the housing 10, the length of the portion of the second supporting member 60 pulled out from the inside of the housing 10 is equal to the length of the portion of the sliding member 34 sent out to the outside of the housing 10, and the pulling speed and the sending speed are equal, so that the flexible display screen 40 is not greatly pulled when being extended outwards and retracted inwards, thereby forming a protective effect on the flexible display screen 40 and prolonging the service life of the flexible display screen 40.

The gear 331 is movably installed in the transmission groove 123 through a gear pin 332, and the first stretching member 31 and the second stretching member 32 are driven to move in opposite directions through rotation of the gear 331, so that the distance that the first stretching member 31 and the second stretching member 32 can move is as long as possible, the transmission groove 123 is disposed at a middle position on the inner wall of the first side plate 11 and the inner wall of the second side plate 12, that is, the gear 331 is located at a middle position of the flexible display device.

In one embodiment, gear 331 has a modulus of 0.25 mm to 5 mm.

The first rack is provided on the side of the second support member 60 close to the sliding member 34, and the second rack is provided on the side of the sliding member 34 close to the second support member 60, and the rack is moved by the rotation of the gear 331 in the transmission member 33. There are various ways of arranging the first and second racks and the transmission member 33.

In one embodiment, the first rack is disposed on the side of the second support member 60 close to the sliding member 34, the second rack is disposed on the side of the sliding member 34 close to the second support member 60, the gear pin 332 penetrates through two ends of the gear 331 and is movably mounted with the transmission groove 123 on the first side plate 11 and the second side plate 12, respectively, and the width of the gear 331 is smaller than or equal to the distance between the first side plate 11 and the second side plate 12.

In one embodiment, as shown in fig. 1, the first stretching member 31 includes two first racks adjacent to the first side plate 11 and the second side plate 12, respectively, the second stretching member 32 includes two second racks adjacent to the first side plate 11 and the second side plate 12, respectively, the transmission member 33 includes a first transmission member and a second transmission member, the first transmission member has a gear 331 engaged with the first rack and the second rack adjacent to the first side plate 11, a gear pin 332 is installed on an inner wall of the first side plate 11, the second transmission member has a gear 331 engaged with the first rack and the second rack adjacent to the second side plate 12, and a gear pin 332 is installed on an inner wall of the second side plate 12.

Specifically, the bottom surface of the second supporting member 60 is provided with two first racks parallel to each other, the two first racks are respectively close to the first side plate 11 and the second side plate 12, the two first racks are completely identical, the top surface of the sliding member 34 is provided with two second racks parallel to each other, the two second racks are respectively close to the first side plate 11 and the second side plate 12 and are arranged corresponding to the two first racks, the two second racks are also completely identical, the transmission member 33 comprises a first transmission member and a second transmission member which are separated from each other, a gear pin 332 in the first transmission member is movably installed in a transmission groove 123 on the first side plate 11, a gear pin 332 in the second transmission member is movably installed in a transmission groove 123 on the second side plate 12, a gear 331 in the first transmission member is engaged with both the first rack and the second rack close to the first side plate 11, a gear 331 in the second transmission member is engaged with both the first rack and the second rack close to the second side plate 12, and the two gears 331 in the two transmission members are identical, as are the two gear pins 332.

The utility model provides a flexible display device, through gear 331, gear pin 332, mutually supporting of first rack and second rack, make flexible display screen 40 can switch at first state and second state, and flexible display screen 40 pulls out and can not receive great effect of dragging with the receipts casing 10 in-process, whole drive mechanism 30 simple structure, need not too much complicated design, consequently, the space that occupies inside flexible display device is less, further make flexible display device whole volume less, more conveniently carry.

Since the second support member 60 and the sliding member 34 are both flat plate structures, in order to prevent the flexible display screen 40 from being scratched when the flexible display screen 40 is fixed to the second support member 60 and the sliding member 34, the flexible display screen 40 is provided with the guide member 70 on one side of the second support member 60, and the flexible display screen 40 bypasses the guide member 70, so that the first end 41 and the second end 42 of the flexible display screen 40 can be smoothly switched.

The two ends of the guide member 70 are mounted on the first side plate 11 and the second side plate 12, the guide member 70 is used for providing direction guidance during the sliding process of the flexible display screen 40, so that the flexible display screen 40 slides more smoothly, and the guide member 70 can be fixedly mounted or movably mounted on the first side plate 11 and the second side plate 12, in this embodiment, the mounting manner of the guide member 70 is movably mounted.

In one embodiment, the guide member 70 is a roller, and two end surfaces of the roller are movably mounted on the first side plate 11 and the second side plate 12. Specifically, a circular protrusion 124 may be provided on one of the inner walls of the first side plate 11 and the second side plate 12 and both end surfaces of the roller, and a circular groove 21 may be provided on the other, and the circular protrusion 124 may be fitted in the circular groove 21. That is, as shown in fig. 1 and fig. 3, the circular protrusions 124 are disposed on the inner walls of the first side plate 11 and the second side plate 12, the circular grooves 21 are disposed on the two end faces of the roller, the two circular protrusions 124 are engaged with the two circular grooves 21, the circular grooves 21 are disposed on the inner walls of the first side plate 11 and the second side plate 12, the circular protrusions 124 are disposed on the two end faces of the roller, the two circular protrusions 124 are engaged with the two circular grooves 21, and both the two methods are applicable. The centers of the circular protrusion 124 and the circular groove 21 are both located on the axis of the roller, so that the roller can rotate around its own axis. When the flexible display screen 40 is pulled out and retracted into the housing 10, the roller can rotate along with the moving direction of the flexible display screen 40, so that the resistance when the flexible display screen 40 is stretched is smaller, the pulling is easier, the bottom surface of the flexible display screen 40 cannot generate larger friction, and the service life is prolonged.

As shown in fig. 1 and 2, both sides of the first supporting member 50 are fixedly installed on the inner walls of the first side plate 11 and the second side plate 12, and the second end 42 of the flexible display screen 40 is connected to the sliding member 34. The inner walls of the first side plate 11 and the second side plate 12 are both formed with a slot 125, two ends of the first supporting member 50 are clamped in the slots 125, and the first supporting member 50 and the first side plate 11 and the second side plate 12 are not movable or rotatable relative to each other.

The first end 41 of the flexible display screen 40 is fixed to the upper surface of the second supporting member 60, the second end 42 is fixed to the sliding member 34, when the flexible display screen 40 is gradually pulled out of the housing 10, a part of the flexible display screen 40 outside the housing 10 moves along with the second supporting member 60, and the other part is supported by the first supporting member 50, in order to ensure that the part of the flexible display screen 40 outside the housing 10 can be supported during the pulling out process, the first supporting member 50 and the second supporting member 60 are arranged to have overlapping parts, that is, the first supporting member 50 and the second supporting member 60 cannot be separated from each other during the pulling out process.

In one embodiment, as shown in fig. 1 and 2, in the first support member 50 and the second support member 60, the upper surface of one of the first support member and the second support member is provided with a plurality of grooves 601 arranged at intervals, the length direction of the grooves 601 is the same as the sliding direction, the other one of the first support member and the second support member comprises a plurality of comb teeth 602 arranged at intervals, and the comb teeth 602 are in one-to-one correspondence with the grooves 601 and are embedded in the grooves 601.

In the embodiment, the second support member 60 is provided with the grooves 601, the first support member 50 is provided with the comb teeth 602, the length direction of the grooves 601 is the same as the sliding direction, and the comb teeth 602 are in one-to-one correspondence with the grooves 601 and are embedded in the grooves 601 along the length direction of the grooves 601. When flexible display screen 40 is pulled out of housing 10 along with the movement of first tensile member 31, since first support member 50 is fixed to first side plate 11 and second side plate 12 and remains stationary, comb teeth 602 gradually slide in a direction away from grooves 601 along with the movement of first tensile member 31, and the length of comb teeth 602 embedded in grooves 601 gradually becomes shorter, whereas when flexible display screen 40 is retracted into housing 10 along with the movement of first tensile member 31, comb teeth 602 gradually slide in a direction closer to grooves 601 along with the movement of first tensile member 31, and the length of comb teeth 602 embedded in grooves 601 gradually becomes longer.

In one embodiment, the length of the comb teeth 602 is less than or equal to the length of the groove 601, so that when the first stretching member 31 moves to the display area of the flexible display screen 40, which is the initial display area, the comb teeth 602 are completely embedded in the groove 601 in the length direction, and at this time, the first support member 50 and the second support member 60 are engaged with each other without a large gap therebetween, and when touching the flexible display screen 40, all parts are supported, thereby improving the touch effect. In addition, the length direction of the groove 601 can provide a limit to the sliding direction, so that the flexible display screen 40 is uniformly stressed during the stretching process.

In one embodiment, as shown in FIG. 8, the cross section of the groove 601 is inverted trapezoid, the cross section of the comb teeth 602 is regular trapezoid, and the height of the top surface of the comb teeth 602 is less than or equal to the height of the top opening of the groove 601. The cross section of the groove 601 is inverted trapezoid, that is, the groove 601 is a dovetail groove, the area of the bottom surface of the groove 601 is larger than the area of the top opening, and the top surface of the comb tooth 602 is located below the opening of the groove 601 or flush with the opening, therefore, when the comb tooth 602 is embedded in the groove 601, the top opening of the groove 601 can provide the limit in the up-down direction, so that the whole comb tooth 602 cannot pass through the opening of the groove 601, and the comb tooth 602 of the first support member 50 can be prevented from tilting upwards to scratch the flexible display screen 40.

In one embodiment, the plurality of grooves 601 are disposed at equal intervals, and correspondingly, the plurality of comb teeth 602 are disposed at equal intervals, so that the flexible display screen 40 is supported more uniformly and better.

It should be noted that the structure and shape of the first support member 50 and the second support member 60 are not limited to this, and other first support members 50 and second support members 60 that can provide a support function for the flexible display screen 40 together after at least a partial region of the flexible display screen 40 is pulled out of the housing 10 all fall within the protection scope of the present application.

In one embodiment, as shown in fig. 1 and 2, one end of the second support member 60 away from the first support member 50 is provided with a fixing portion facing the bottom plate 13, the fixing portion is formed in a solid semi-cylindrical shape and includes a semi-cylindrical surface, a flat surface and two end surfaces oppositely arranged, wherein when the display area of the flexible display screen 40 is equal to the initial display area, the flat surface of the fixing portion contacts with the outer wall of the third side plate of the housing 10, and external impurities and dust can be blocked from entering the interior of the housing 10 to cause loss of the flexible display screen 40.

The first end 41 of the flexible display 40 is fixed to the upper surface of the second support member 60 by a first adhesive layer, which may be an optical adhesive. The second end 42 of the flexible display is secured to the upper or lower surface of the slide member 34 by a second adhesive layer, which may be an optical glue, or a clamping member, which may be a clamping plate, or the like.

According to the embodiment, the flexible display device provided by the application can increase or reduce the size of the flexible display device in the sliding direction by arranging the transmission mechanism, and in the stretching process, through the matching of the gear, the rack and other members, the flexible display screen originally contained in the shell can be pulled out to the upper surface of the flexible display device, so that the display size of the flexible display device is increased, and the flexible display screen can be stretched in the opposite direction to contain part of the upper surface of the flexible display device into the shell until the flexible display screen is reduced to the initial size. Through the above setting mode, flexible display device can switch at first state and second state, and flexible display screen 40 pulls out and receive in 10 in-process of casing and can not receive great effect of dragging, when flexible display screen needs large-size screen display, the region that will show is pulled out from the casing, make flexible display device's display area increase, the content that shows can be abundanter, when flexible display screen needs little screen display, the region that will not need to show is received in the casing, make flexible display device size less, occupation space is less, and is convenient for carry.

According to the above embodiment:

the application provides a flexible display device, which comprises a shell, a first supporting member fixedly arranged with the shell, a second supporting member arranged in a sliding manner relative to the first supporting member, a transmission mechanism arranged in the shell and connected with the second supporting member, and a flexible display screen, wherein the first supporting member is fixedly arranged with the shell; the flexible display screen is laid on one side of the first supporting member and one side of the second supporting member, the first end of the flexible display screen is connected with one end, far away from the first supporting member, of the second supporting member, and the second end of the flexible display screen is connected with the transmission mechanism; when the first supporting member and the second supporting member slide relatively, the two ends of the flexible display screen keep moving at the same movement distance in the same time under the action of the transmission mechanism. Through the above-mentioned mode of setting up, the flexible display device of this application can be when the flexible display screen needs large-size screen display, the region that will show is pulled out from the casing, make flexible display device's area of display increase, the content that shows can be abundanter, when the flexible display screen needs little screen display, the region that will not show is received in the casing, make flexible display device size less, occupation space is less, and is convenient for carry, the flexible display screen is pulling out and is received the casing in-process, both ends keep the removal of same movement distance in the same time, consequently, can not receive great pulling force, the service life of flexible display screen is improved.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The foregoing detailed description is directed to a flexible display device provided in the embodiments of the present application, and specific examples are applied herein to illustrate the principles and implementations of the present application, and the above description of the embodiments is only used to help understand the technical solutions and core ideas of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.

Claims

1. A flexible display device, comprising:

2. The flexible display device of claim 1, wherein the transmission mechanism comprises a first tensile member, a second tensile member, a sliding member, and a transmission member, wherein the first tensile member is fixed to the second support member, the second tensile member is fixed to the sliding member, the sliding member is slidably disposed relative to the housing, the transmission member is coupled to the housing, and the second end of the flexible display screen is coupled to the sliding member.

3. The flexible display device according to claim 2, wherein the first tension member comprises a first rack fixed to a side of the second support member adjacent to the sliding member, the second tension member comprises a second rack fixed to a side of the sliding member adjacent to the second support member, the transmission member comprises a gear and a gear pin passing through the gear center hole lock, the gear pin is mounted on the housing, and the gear is engaged with both the first rack and the second rack.

4. The flexible display device of claim 3, wherein the first and second racks have equal modulus and pitch.

5. A flexible display device as claimed in claim 3, wherein the gear has a module of 0.25 mm to 5 mm.

6. The flexible display device according to claim 3, wherein the housing comprises a first side plate and a second side plate which are oppositely arranged, the first stretching member comprises two first racks which are respectively adjacent to the first side plate and the second side plate, the second stretching member comprises two second racks which are respectively adjacent to the first side plate and the second side plate, the transmission member comprises a first transmission member and a second transmission member, a gear in the first transmission member is engaged with the first rack and the second rack which are adjacent to the first side plate, a gear pin is installed on the inner wall of the first side plate, a gear in the second transmission member is engaged with the first rack and the second rack which are adjacent to the second side plate, and a gear pin is installed on the inner wall of the second side plate.

7. The flexible display device according to claim 3, wherein the housing includes a first side plate and a second side plate which are oppositely disposed, the first rack is entirely disposed on a side of the second support member close to the sliding member, the second rack is entirely disposed on a side of the sliding member close to the second support member, and the gear pin penetrates through both ends of the gear and is installed on an inner wall of the first side plate and an inner wall of the second side plate.

8. The flexible display device according to claim 3, wherein the housing comprises a bottom plate, and a first side plate and a second side plate which are oppositely arranged, wherein a first sliding groove, a second sliding groove and a transmission groove are respectively arranged on inner walls of the first side plate and the second side plate, the first sliding groove and the second sliding groove are both parallel to the bottom plate, the transmission groove is arranged between the first sliding groove and the second sliding groove, two sides of the second support member are movably arranged in the first sliding groove, two sides of the sliding member are movably arranged in the second sliding groove, and the gear pin is movably arranged in the transmission groove.

9. The flexible display device according to claim 8, wherein a locking groove is further formed on an inner wall of the first side plate and the second side plate, and both ends of the first supporting member are locked in the locking groove.

10. The flexible display device according to claim 8, wherein the second support member comprises first sliders provided at both sides, the first sliders being embedded in the first sliding grooves, and the slide member comprises second sliders provided at both sides, the second sliders being embedded in the second sliding grooves.

11. The flexible display device according to claim 3, further comprising a driving mechanism coupled to the gear, wherein the driving mechanism drives the gear to rotate in a first direction when the flexible display screen is in the first state, and wherein the driving mechanism drives the gear to rotate in a second direction when the flexible display screen is in the second state, wherein the first direction is one of clockwise or counterclockwise, and the second direction is the other of clockwise or counterclockwise.

12. The flexible display device according to claim 1, wherein the first support member and the second support member have a plurality of grooves formed at intervals on an upper surface thereof, and a plurality of comb teeth formed at intervals on an upper surface thereof, the comb teeth corresponding to the grooves and being inserted into the grooves.

13. The flexible display device according to claim 12, wherein the grooves have an inverted trapezoidal cross-section, and the comb teeth have a regular trapezoidal cross-section.

14. The flexible display device of claim 1, further comprising a guide member disposed within the housing, wherein the second end of the flexible display screen passes around the guide member and is coupled to the actuator.

15. The flexible display device according to claim 14, wherein the guide member is a roller, the housing includes a first side plate and a second side plate which are oppositely disposed, one of inner walls of the first side plate and the second side plate and two end surfaces of the roller is provided with a circular protrusion, and the other is provided with a circular groove, and the circular protrusion is embedded in the circular groove.