CN110738932B - Flexible display screen crimping device and display device - Google Patents
Flexible display screen crimping device and display device Download PDFInfo
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- CN110738932B CN110738932B CN201910959134.9A CN201910959134A CN110738932B CN 110738932 B CN110738932 B CN 110738932B CN 201910959134 A CN201910959134 A CN 201910959134A CN 110738932 B CN110738932 B CN 110738932B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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Abstract
The invention provides a flexible display screen curling device and a display device, and solves the problem of curling a flexible display screen. The flexible display screen curling device is used for curling and fixing the flexible display screen, and the flexible display screen comprises a first end and a second end opposite to the first end. The flexible display screen curling device comprises: the telescopic assembly is fixedly connected with the first end of the flexible display screen; the movable assembly is fixedly connected with the second end of the flexible display screen; the flexible display screen is driven to be curled by the flexible display screen, and the movable assembly is configured to rotate in response to the received external driving force and move towards the telescopic assembly in a first direction, wherein the first direction is perpendicular to a rotating shaft of the movable assembly; during the process of rolling the flexible display screen, the telescoping assembly is extended in a first direction to compensate for the length of the flexible display screen.
Description
Technical Field
The invention relates to the technical field of flexible display screens, in particular to a flexible display screen curling device and a display device.
Background
With the rapid development of flexible display technology, a rollable flexible display screen is receiving attention as a new generation of display products. The curling performance is one of the primary problems in determining whether the flexible display screen can be rolled in mass production, and therefore, how to curl the flexible display screen to test the curling performance becomes one of the problems to be solved urgently in the flexible display field.
Disclosure of Invention
In view of the above, embodiments of the present invention are directed to a flexible display screen curling device and a display device, so as to solve the problem of how to curl a flexible display screen.
The invention provides a flexible display screen curling device which is used for curling and fixing a flexible display screen. The flexible display screen curling device comprises a telescopic component which is fixedly connected with the first end of the flexible display screen; the movable assembly is fixedly connected with the second end of the flexible display screen; the flexible display screen is driven to be curled by the flexible display screen, and the movable assembly is configured to rotate in response to the received external driving force and move towards the telescopic assembly in a first direction, wherein the first direction is perpendicular to a rotating shaft of the movable assembly; during the process of rolling the flexible display screen, the telescoping assembly is extended in a first direction to compensate for the length of the flexible display screen.
In one embodiment, the telescopic assembly comprises a fixed frame, a sliding block connected to the fixed frame in a sliding mode along a first direction, and an elastic piece connected between the fixed frame and the sliding block.
In one embodiment, the fixing frame comprises a top plate and a bottom plate which are oppositely arranged, and a vertical plate which is vertically fixed with the top plate and the bottom plate respectively; the top plate and the bottom plate are respectively provided with a first groove and a second groove which extend along a first direction, and the top end and the bottom end of the sliding block are respectively in sliding fit with the first groove and the second groove; preferably, the elastic member comprises a spring, a first end of the spring is fixedly connected with the vertical plate, and a second end of the spring is fixedly connected with the side wall of the sliding block.
In one embodiment, the telescopic assembly further comprises a swinging piece, the swinging piece is positioned on one side of the sliding block, which is far away from the elastic piece, and is in rotating connection with the sliding block, and the rotating shaft of the swinging piece is parallel to the rotating shaft of the movable assembly; the second end of the flexible display screen is fixedly connected with the swinging piece.
In one embodiment, the top end and the bottom end of the sliding block respectively comprise a protruding edge facing the flexible display screen, and bearings are respectively fixed on the protruding edges; the top end and the bottom end of the swinging piece are respectively connected with the rotor of the bearing.
In one embodiment, the display device further comprises a compensation sheet, wherein the compensation sheet is connected between the first end of the flexible display screen and the telescopic assembly; and/or the compensation sheet is connected between the second end of the flexible display screen and the movable assembly, preferably, the compensation sheet comprises any one of a steel sheet, a plastic sheet, a cover plate extending from the flexible display screen and a polarizer.
In one embodiment, the movable assembly comprises a roller and a curved surface pressing sheet, and the curvature of the curved surface pressing sheet is equal to that of the roller; the first surface of the first end of the flexible display screen is pasted on the outer surface of the roller, and the curved surface pressing sheet is pasted on the second surface of the first end and fixed with the roller.
In one embodiment, the device further comprises a base and a driving mechanism, wherein the base comprises a cavity, and the driving mechanism is fixed in the cavity; a through groove extending along a first direction is formed in the top wall of the base, and the first end of the movable assembly penetrates through the through groove to be coupled with the driving mechanism; the telescopic assembly is positioned at one end of the through groove and fixed on the top wall.
In one embodiment, the drive mechanism includes a motor, a lead screw assembly, and a rack; the rack is fixed on the base and extends along the first direction; the screw rod assembly comprises a screw rod electrically connected with the motor and a nut coupled with the screw rod, and the screw rod is parallel to the rack; the first end of the movable assembly is divided into a first section and a second section, the first section is rotatably connected with the nut, and the second section is matched with the rack and the gear.
The invention provides a display device, which comprises a flexible display screen and the flexible display screen rolling device provided by any one of the embodiments.
According to the flexible display screen curling device and the display device provided by the invention, the automatic curling of the flexible display screen is realized. Meanwhile, through setting up flexible subassembly, be about to implement flexible display screen's stiff end as extending structure, it can be at the curling in-process extension of flexible display screen to length to flexible display screen compensates, thereby has avoided flexible display screen by overstretching.
Drawings
Fig. 1 is a schematic structural diagram of a flexible display screen rolling device according to a first embodiment of the present invention.
Fig. 2 is a schematic partial structural diagram of a flexible display screen rolling device according to a second embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a telescopic assembly in the flexible display screen rolling device shown in fig. 2.
Fig. 4 is a schematic partial structural diagram of a base according to an embodiment of the present invention.
Fig. 5 is a schematic view showing a connection relationship between the base and the movable member shown in fig. 4.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
Fig. 1 is a schematic structural diagram of a flexible display screen rolling device according to a first embodiment of the present invention. As shown in fig. 1, the flexible display screen rolling device 10 is used for rolling and fixing a flexible display screen 11, and the flexible display screen 11 includes a first end a and a second end B opposite to the first end a. The flexible display screen rolling device 10 includes a fixed portion 12 and a movable assembly 13. The fixing portion 12 is fixedly connected with the second end B of the flexible display screen 11, and the movable assembly 13 is fixedly connected with the first end a of the flexible display screen 11. The movable component 13 is configured to rotate in response to the received external driving force and move in a first direction L towards the fixed part 12 to bring the flexible display screen to curl, wherein the first direction L is perpendicular to the rotation axis of the movable component 13.
According to the flexible display screen curling device 10 provided by the embodiment, when an external force is applied to the movable assembly 13, the movable assembly 13 can rotate and move linearly towards the fixed portion 12. In this case, by fixing the opposite ends of the flexible display screen 11 to the fixed part 12 and the movable part 13, respectively, when a corresponding external force is applied to the movable part 13, the movable part 13 can drive the flexible display screen 11 to be curled and wound on the movable part 13 step by step.
The inventor has found that, in the flexible display curling device 10 of the type shown in fig. 1, that is, the flexible display curling device with the curled end moving, during the operation of the flexible display curling device 10, as the flexible display 11 is continuously wound on the movable assembly 13, the number of layers of the flexible display 11 wound on the movable assembly 13 is gradually increased, so that the radius of the cross section of the whole movable assembly 13 is gradually increased. In this case, the length of the flexible display screen 11 wound by the movable assembly 13 is continuously increased every rotation, and since the movable assembly 13 moves at a constant speed, the linear distance traveled by the movable assembly 13 is constant during the rotation of the movable assembly 13, which results in that the linear distance traveled by the movable assembly is not matched with the length of the flexible display screen 11 wound on the movable assembly 11 during the rotation of the movable assembly 13. Therefore, a situation may occur in which the flexible display 11 is excessively stretched and damaged.
In view of the above, the present invention improves the flexible display screen curling apparatus 10 shown in fig. 1, as shown in fig. 2, which is a partial structural schematic view of a flexible display screen curling apparatus provided by a second embodiment of the present invention, and fig. 3 is a structural schematic view of a telescopic assembly in the flexible display screen curling apparatus shown in fig. 2, and as can be seen from fig. 2 and 3, in the flexible display screen curling apparatus 20, the fixing portion 12 is implemented as a telescopic assembly 22, and the telescopic assembly 22 is used for extending in the first direction L during the process of curling the flexible display screen 21 so as to compensate for the length of the flexible display screen 21, thereby preventing the flexible display screen 21 from being excessively stretched.
Specifically, in the present embodiment, as shown in fig. 3, the telescopic assembly 22 includes a fixed frame 221, a slider 222 slidably connected to the fixed frame 221 along the first direction L, and an elastic member 223 connected between the fixed frame 221 and the slider 222.
In this case, the second end B of the flexible display 21 is fixedly connected to an end of the slider 222 away from the elastic member 223, that is, the flexible display 21, the slider 222, the elastic member 223 and the fixing frame 221 are linearly arranged along the first direction. In the process that the first end a of the flexible display screen 21 is gradually wound on the movable assembly 23, as the number of layers of the flexible display screen 21 wound on the movable assembly 23 increases, the second end B of the flexible display screen 21 is subjected to a gradually increasing pulling force towards the movable assembly 23, and then by virtue of the elasticity of the elastic member 223, the flexible display screen 21 pulls the sliding block 222 to move towards the movable assembly 23, which is equivalent to increasing the length of the flexible display screen 21, so as to compensate the length of the flexible display screen 21.
In this embodiment, as shown in FIG. 3, the retraction assembly 22 further includes a swinging member 224. The swinging member 224 is located on a side of the sliding block 222 away from the elastic member 223 and is rotatably connected with the sliding block 222, a rotating shaft of the swinging member 224 is parallel to a rotating shaft of the movable assembly 23, and the second end B of the flexible display screen 21 is fixedly connected with the swinging member 224.
The oscillating piece 224 may be rod-shaped, such as an oscillating rod; or may be sheet-like, such as a swing plate. Referring to fig. 2, before the flexible display screen 21 is rolled, the display surface of the flexible display screen 21 is parallel to the first direction L, and the force applied by the first end a of the flexible display screen 21 to the second end B is parallel to the first direction L. When the first end a of the flexible display screen 21 rotates counterclockwise as shown in the drawing, along with the increase of the number of layers of the flexible display screen 21 wound on the movable assembly 23, the first end a of the flexible display screen 21 rotates counterclockwise by a slight angle with respect to the second end B, and at this time, the acting force applied to the second end B by the first end a also deviates from the slight angle in the same direction L, so that an included angle is formed between the display surface of the flexible display screen 21 and the first direction L, and the included angle gradually increases, resulting in the inclination of the flexible display screen 21.
Through second end B at flexible display screen 21 sets up swing piece 224, the number of layers of winding gradually increases on movable assembly 23 as flexible display screen 21, in order to lead to first end A to apply for the skew first direction L of effort of second end B, swing piece 224 can be at the synchronous anticlockwise corresponding angle of deflection under the effect of this effort, thereby carry out the angle fine setting to the second end B of flexible display screen 21, so that the display surface of flexible display screen 21 keeps parallel with first direction L, thereby avoid flexible display screen 21 to take place the slope, promote user experience.
The specific structure of retraction assembly 22 is described below in terms of a specific embodiment. Referring to fig. 3, the fixing frame 221 includes a top plate and a bottom plate disposed opposite to each other, and a vertical plate vertically fixed to the top plate and the bottom plate, respectively, a first groove and a second groove extending along the first direction L are disposed on the top plate and the bottom plate, respectively, and the top end and the bottom end of the slider 222 are slidably engaged with the first groove and the second groove, respectively. The elastic member 223 includes a spring, a first end of which is fixedly connected with the vertical plate, and a second end of which is fixedly connected with the side wall of the slider 222.
The number of the springs may be one or more, for example, as shown in fig. 3, the elastic member 223 includes three springs which are arranged in parallel at equal intervals along the length direction of the vertical plate. The way of fixing the spring to the vertical plate and the slider 222 is not limited, for example, a first boss 2211 facing the slider 222 is provided on the side of the vertical plate 221 facing the slider 222, the first boss 2211 includes a first table parallel to the first direction L, and a first protrusion is provided on the first table. A second boss 2221 facing the vertical plate 221 is disposed on a side wall of the slider 222 facing the vertical plate 221, the second boss 2221 includes a second table surface parallel to the first direction L, a second protrusion (not shown in the figure) corresponding to the first protrusion is disposed on the second table surface, the second protrusion and the first protrusion are arranged in parallel along the first direction L, and a protruding direction of the first protrusion and the second protrusion is perpendicular to the first direction L. The first end of the spring is fixed on the first protrusion, and the second end of the spring is fixed on the second protrusion.
Further, the top and bottom ends of the slider 222 respectively include protruding edges facing the flexible display screen 21, and bearings 2241 are respectively fixed on the protruding edges. The oscillating member 224 is rod-shaped, and the top end and the bottom end of the oscillating member 224 are respectively connected with the rotor of the bearing.
In this embodiment, as shown in fig. 2, the movable assembly 23 includes a roller 231 and a curved pressing piece 232, and the curvature of the curved pressing piece 232 is equal to that of the roller 231. The first surface of the first end a of the flexible display screen 21 is adhered to the outer surface of the roller 231, and the curved pressing sheet 232 is pressed against the second surface of the first end a of the flexible display screen 21 and fixed with the roller 231, for example, by screws. The surface of the curved surface pressing sheet 232 contacting the flexible display screen 21 may be provided with a layer of foam to avoid damaging the flexible display screen 21.
In one embodiment, to ensure that the display surface of the flexible display screen 21 is displayed completely, compensation foils are disposed at the first end a and the second end B of the flexible display screen 21. Specifically, the compensation sheet is connected between the first end a of the flexible display screen 21 and the movable assembly 23, and is used for fixedly connecting the first end a of the flexible display screen 21 with the movable assembly 23; and/or, a compensation sheet is connected between the second end B of the flexible display screen 21 and the telescopic assembly 22 for fixedly connecting the second end B of the flexible display screen 21 with the telescopic assembly 22. Thus, when the two ends of the flexible display screen 21 are fixed, the area of the flexible display screen 21 itself does not need to be occupied, and the display surface of the flexible display screen 21 is ensured to be displayed completely.
The compensation sheet may be an extended portion of the polarizer and/or cover plate of the flexible display 21, an added steel sheet or plastic sheet, or the like. The compensation foils provided at the first end a and the second end B of the flexible display 21 may be the same or different.
In the present embodiment, as shown in fig. 2, the flexible display screen rolling device 20 further includes a flexible circuit board 24 connected to the second end B of the flexible display screen 21, and the flexible circuit board 24 is used for driving the flexible display screen 21 to implement a display function. The flexible circuit board 24 may be fixed to the swinging member, or attached to the non-display surface of the flexible display screen 21, or a housing may be provided outside the telescopic assembly 22 to fix the flexible display circuit board 24 to the inner surface of the housing.
In one embodiment, flexible display screen curling device 20 also includes a base (e.g., base 14 shown in FIG. 1) and a drive mechanism. The base comprises a cavity, and the driving mechanism is fixed in the cavity. The top wall of the base is provided with a through groove extending along the first direction L, the first end of the movable assembly 23 penetrates through the through groove to be coupled with the driving mechanism, and the telescopic assembly 22 is located at one end of the through groove and fixed on the top wall of the base. In this way, the driving mechanism can be used to implement automatic rolling of the flexible display screen rolling device 20, and in other embodiments, manual driving can be directly used.
Fig. 4 is a schematic partial structural diagram of a base according to an embodiment of the present invention. Fig. 5 is a schematic view showing a connection relationship between the base and the movable member shown in fig. 4. As can be seen in connection with fig. 4 and 5, the drive mechanism includes a motor 451, a lead screw assembly 452, and a rack 453. The rack 453 is fixed to the base 44 and extends in the first direction L; the lead screw assembly 452 comprises a lead screw 4521 electrically connected with the motor 451 and a nut 4522 coupled with the lead screw 4521, the lead screw 4521 being parallel to the rack 453; the first end of the movable assembly 23 is divided into a first section rotatably connected to the nut 4522 and a second section gear-fitted to the rack 453.
Specifically, the nut 4522 is rotatably connected to the first section of the movable assembly 23 through the bearing 461, the fixed gear 462 is sleeved on the outer wall of the second section of the movable assembly 23, and the fixed gear 462 is coupled to the rack 453.
The lead screw assembly 452 can translate rotation of the lead screw 4521 into linear motion of the nut 4522. In this case, when the motor 451 rotates, the lead screw 4521 is driven to rotate, and the rotation of the lead screw 4521 is converted into the linear motion of the nut 4522, so as to drive the movable assembly 23 to move linearly along the lead screw 4521. During the linear movement of the movable assembly 23, the fixed gear 462 of the movable assembly 23 rotates relative to the rack 453, thereby rotating the movable assembly 23.
The invention further provides a display device which comprises a flexible display screen and the flexible display screen curling device provided by any one of the embodiments.
It should be understood that the terms "first", "second", "third" and "fourth" used in the description of the embodiments of the present invention are only used for clearly illustrating the technical solutions, and are not used for limiting the protection scope of the present invention.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and the like that are within the spirit and principle of the present invention are included in the present invention.
Claims (10)
1. A flexible display screen curling device is used for curling and fixing a flexible display screen, and the flexible display screen comprises a first end and a second end opposite to the first end; characterized in that, flexible display screen crimping device includes:
the telescopic assembly is fixedly connected with the first end of the flexible display screen;
the movable assembly is fixedly connected with the second end of the flexible display screen;
wherein the movable assembly is configured to rotate in response to a received external driving force and move in a first direction towards the telescopic assembly to bring the flexible display screen to curl, the first direction being perpendicular to a rotation axis of the movable assembly; during the process of curling the flexible display screen, the telescopic assembly is stretched in the first direction to compensate for the length of the flexible display screen;
the telescopic assembly comprises a fixed frame, a sliding block connected to the fixed frame in a sliding mode along the first direction, and an elastic piece connected between the fixed frame and the sliding block; the telescopic assembly further comprises a swinging piece, the swinging piece is positioned on one side of the sliding block, which is far away from the elastic piece, and is in rotating connection with the sliding block, and a rotating shaft of the swinging piece is parallel to a rotating shaft of the movable assembly; the second end of the flexible display screen is fixedly connected with the swinging piece.
2. The flexible display screen curling device of claim 1, wherein the fixing frame comprises a top plate and a bottom plate which are oppositely arranged, and a vertical plate which is vertically fixed with the top plate and the bottom plate respectively; the top plate and the bottom plate are respectively provided with a first groove and a second groove which extend along the first direction, and the top end and the bottom end of the sliding block are respectively in sliding fit with the first groove and the second groove.
3. The flexible display screen curling device of claim 2, wherein the resilient member comprises a spring, a first end of the spring is fixedly connected to the vertical plate, and a second end of the spring is fixedly connected to the side wall of the slider.
4. The flexible display screen curling device of claim 1, wherein the top end and the bottom end of the slider respectively comprise a protruding edge facing the flexible display screen, and bearings are respectively fixed on the protruding edges; the top end and the bottom end of the swinging piece are respectively connected with the rotor of the bearing.
5. The flexible display screen curling device of claim 1, further comprising a compensation tab connected between the first end of the flexible display screen and the telescoping assembly; and/or
The compensation foil is connected between the second end of the flexible display screen and the movable assembly.
6. The flexible display screen curling device of claim 5, wherein the compensation sheet comprises any one of a steel sheet, a plastic sheet, a cover plate extending from the flexible display screen, and a polarizer.
7. The flexible display screen curling device of claim 1, wherein the movable assembly comprises a roller and a curved sheeting, and the curvature of the curved sheeting is equal to the curvature of the roller; the first surface of the first end of the flexible display screen is pasted on the outer surface of the roller, and the curved surface pressing sheet is pasted on the second surface of the first end and fixed with the roller.
8. The flexible display screen curling device of claim 1, further comprising a base and a drive mechanism, wherein the base comprises a cavity and the drive mechanism is secured within the cavity; a through groove extending along the first direction is formed in the top wall of the base, and the first end of the movable assembly penetrates through the through groove to be coupled with the driving mechanism; the telescopic assembly is located at one end of the through groove and fixed on the top wall.
9. The flexible display screen curling device of claim 8, wherein the driving mechanism comprises a motor, a lead screw assembly and a rack; the rack is fixed on the base and extends along the first direction; the lead screw assembly comprises a lead screw electrically connected with the motor and a nut coupled with the lead screw, and the lead screw is parallel to the rack; the first end of the movable assembly is divided into a first section and a second section, the first section is rotatably connected with the nut, and the second section is matched with the rack and the gear.
10. A display device, characterized in that the display device comprises a flexible display screen and a flexible display screen curling device according to any of claims 1 to 9.
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| CN201910959134.9A CN110738932B (en) | 2019-10-10 | 2019-10-10 | Flexible display screen crimping device and display device |
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| CN201910959134.9A CN110738932B (en) | 2019-10-10 | 2019-10-10 | Flexible display screen crimping device and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111462631A (en) * | 2020-04-22 | 2020-07-28 | 昆山国显光电有限公司 | Flexible display device |
| CN112722932B (en) * | 2020-12-01 | 2022-09-06 | 合肥维信诺科技有限公司 | Crimping device of flexible display panel |
| CN113345330B (en) * | 2021-06-17 | 2022-10-04 | 合肥维信诺科技有限公司 | Flexible display device |
| CN113345332B (en) * | 2021-06-21 | 2023-11-28 | 武汉华星光电技术有限公司 | Flexible display device |
| CN113628547B (en) * | 2021-07-15 | 2022-08-05 | 武汉华星光电半导体显示技术有限公司 | Display device |
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| CN106782202A (en) * | 2016-11-29 | 2017-05-31 | 成都荣耀广告有限公司 | Intelligent banner advertisement frame |
| CN206758035U (en) * | 2017-03-14 | 2017-12-15 | 上海天马有机发光显示技术有限公司 | Flexible display apparatus |
| CN206725188U (en) * | 2017-04-28 | 2017-12-08 | 京东方科技集团股份有限公司 | Bending test apparatus |
| CN109910774A (en) * | 2019-03-11 | 2019-06-21 | 天派电子（深圳）有限公司 | A kind of vehicle-carrying display screen folding and unfolding method and device |
| CN109979329A (en) * | 2019-04-29 | 2019-07-05 | 武汉华星光电半导体显示技术有限公司 | A kind of flexible display apparatus |
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