WO2024045303A1 - 柔性显示装置 - Google Patents

柔性显示装置 Download PDF

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Publication number
WO2024045303A1
WO2024045303A1 PCT/CN2022/127847 CN2022127847W WO2024045303A1 WO 2024045303 A1 WO2024045303 A1 WO 2024045303A1 CN 2022127847 W CN2022127847 W CN 2022127847W WO 2024045303 A1 WO2024045303 A1 WO 2024045303A1
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WO
WIPO (PCT)
Prior art keywords
flexible display
display device
screen
end fixing
screen end
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Application number
PCT/CN2022/127847
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English (en)
French (fr)
Inventor
后红琪
廖富
朱召吉
禹世水
吴雨华
闫德松
Original Assignee
昆山国显光电有限公司
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Publication date
Application filed by 昆山国显光电有限公司 filed Critical 昆山国显光电有限公司
Publication of WO2024045303A1 publication Critical patent/WO2024045303A1/zh

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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

Definitions

  • the present application relates to the field of display technology, and in particular to a flexible display device.
  • This application provides a flexible display device that can reduce the risk of display abnormalities.
  • Embodiments of the present application provide a flexible display device, including a fixed base, a winding shaft, a first screen end fixing part, a second screen end fixing part, a flexible display screen, a first elastic member and a second elastic member;
  • the first screen end fixing part is slidably installed on the fixing base around the axis, and the sliding direction is perpendicular to the axial direction of the axis.
  • the second screen end fixing part is slidably installed on the fixing seat.
  • the sliding direction is perpendicular to the axis around the shaft.
  • the flexible display screen goes around the winding axis, one end of the flexible display screen is fixed on the first screen end fixing piece, and the other end is fixed on the second screen end fixing piece;
  • the first elastic member is installed between the fixing base and the first screen end fixing member and provides the first elastic force to the first screen end fixing member;
  • the second elastic member is installed between the fixing base and the second screen end fixing member. time, and provide a second elastic force to the second screen end fixing member;
  • the first elastic force can at least partially balance the second elastic force.
  • Embodiments of the present application provide a flexible display device.
  • the first elastic force and the second elastic force apply stretching forces to both ends of the flexible display screen respectively.
  • the first elastic force can balance the fixing base toward the first screen end fixing member.
  • the friction generated between the side of the fixing base and the flexible display screen, and the second elastic force can balance the friction generated between the side of the fixing base facing the second screen end fixing member and the flexible display screen.
  • the existence of the first elastic force and the second elastic force can reduce the frictional influence on the flexible display screen on both sides of the fixed base, thereby reducing the risk of excessive force difference between the two ends of the flexible display screen due to friction and improving flexibility. Indicates the reliability of the device.
  • Figure 1 is a schematic structural diagram of a flexible display device in a contracted state provided by an embodiment of the present application
  • Figure 2 is a schematic structural diagram of a flexible display device in an expanded state according to an embodiment of the present application
  • Figure 3 is a schematic diagram of an exploded structure of a flexible display device provided by an embodiment of the present application.
  • Figure 4 is a schematic diagram of an exploded structure of a telescopic structural member in a flexible display device provided by an embodiment of the present application;
  • Figure 5 is a schematic structural diagram of a telescopic structural member in a contracted state of a flexible display device provided by an embodiment of the present application;
  • Figure 6 is a schematic structural diagram of a telescopic structural member in an expanded state of a flexible display device provided by an embodiment of the present application
  • Figure 7 is a schematic structural diagram of a fixed base in a flexible display device provided by an embodiment of the present application.
  • Figure 8 is a schematic structural diagram of a first sliding mechanism in a flexible display device provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a second screen end fixing member in a flexible display device provided by an embodiment of the present application.
  • Figure 10 is a schematic structural diagram of a telescopic structural member in a contracted state in a flexible display device provided by an embodiment of the present application;
  • Figure 11 is a schematic structural diagram of a telescopic structural member in an expanded state in a flexible display device provided by an embodiment of the present application;
  • Figure 12 is a schematic diagram of the cooperation structure of the first elastic member and the first screen end fixing member in a flexible display device provided by an embodiment of the present application;
  • Figure 13 is a schematic structural diagram of a curved support member in a flexible display device provided by an embodiment of the present application.
  • Figure 14 is a schematic structural diagram of a first screen end fixing member in a flexible display device provided by an embodiment of the present application.
  • Figure 15 is a schematic diagram of the exploded structure of another telescopic structural member in a flexible display device provided by an embodiment of the present application;
  • FIG. 16 is a schematic structural diagram of a power supply structure in a flexible display device provided by an embodiment of the present application.
  • the flexible display screen needs to expand and contract synchronously with the sliding end, and at the same time, the flexible display screen will move relative to the axis.
  • the end of the flexible display hidden inside the flexible display device will continue to be subjected to stretching force, but due to factors such as friction between the flexible display and the axis, it will balance at the middle position of the flexible display.
  • Partial tensile force causes the force on one end of the flexible display screen located on the light-emitting surface to be smaller than the tensile force on the other end.
  • the embodiment of the present application provides a flexible display device, including a fixed base 2, a winding shaft 21, a first screen end fixing part 3, a second screen end fixing part 4, Flexible display screen 1, at least one first elastic member 22 and at least one second elastic member 23.
  • the winding shaft 21 is arranged on the fixed base 2.
  • the first screen end fixing part 3 is slidably installed on the fixed base 2 and the sliding direction is perpendicular to the axial direction of the winding shaft 21.
  • the second screen end fixing part 4 is slidably installed. It is provided on the fixed base 2 and the sliding direction is perpendicular to the axial direction around the shaft 21 .
  • the flexible display screen 1 is wound around the winding axis 21 , one end of the flexible display screen 1 is fixed on the first screen end fixing part 3 , and the other end is fixed on the second screen end fixing part 4 .
  • the first elastic member 22 is installed between the fixing base 2 and the first screen end fixing member 3, and provides the first elastic force F1 to the first screen end fixing member 3;
  • the second elastic member 23 is installed between the fixing base 2 and the first screen end fixing member 3. between the second screen end fixing parts 4 and provide the second elastic force F2 to the second screen end fixing part 4 .
  • the first elastic force F1 can at least partially balance the second elastic force F2.
  • the flexible display device provided by the embodiments of the present application includes at least two states, namely a contracted state and an expanded state. Compared with the contracted state, the flexible display device can display a larger screen size in the expanded state, thereby improving user experience. experience.
  • the flexible display screen 1 is the main component used to realize the display function in the flexible display device. When the flexible display device is used, the corresponding image information needs to be transferred to the flexible display screen 1 and displayed through the flexible display screen 1 .
  • the flexible display device includes a telescopic structural member S.
  • the fixed base 2, the winding shaft 21, the first screen end fixing member 3, the second screen end fixing member 4, the first elastic member 22 and the second elastic member 23 are all included in the telescopic structural member.
  • the telescopic structural member S itself can deform.
  • the telescopic structural member S is the main component used to achieve the telescopic effect in the flexible display device.
  • the fixed base 2 is used to install the winding shaft 21.
  • the winding shaft 21 is rotatably connected to the fixed base 2.
  • part of the structure of the flexible display screen 1 will bend around the winding shaft 21, so that at least one part of the flexible display screen 1 is bent. Parts can be hidden inside the flexible display device.
  • the flexible display device changes from a contracted state to an expanded state, the flexible display screen 1 will move relative to the axis 21 , and the axis 21 will rotate relative to the fixed base 2 , and some structures in the flexible display screen 1 will change from the flexible display device to the expanded state.
  • the inside of the device is exposed, thereby increasing the size of the displayable screen of the flexible display device.
  • the flexible display screen 1 has two opposite ends in its extension direction, one end of which is fixed to the first screen end fixing part 3 and the other end is fixed to the second screen end fixing part 4 . Since the flexible display screen 1 needs to be arranged around the axis 21 , the two ends of the flexible display screen 1 are respectively located on both sides of the fixing base 2 in the thickness direction Z of the flexible display device. It can be further seen that the first screen end fixing part 3 and the second screen end fixing part 4 are respectively located on both sides of the fixing base 2 in the thickness direction Z.
  • first screen end fixing part 3 and the second screen end fixing part 4 is located on the side of the fixing base 2 close to the light emitting surface of the flexible display device, and the other one is located on the fixing base 2 close to the backlight of the flexible display device.
  • the embodiment of the present application does not limit this side.
  • the first screen end fixing part 3 is located on the side of the fixing base 2 close to the light emitting surface of the flexible display device
  • the second screen end fixing part 4 is located on the fixing base 2 close to the flexible display device.
  • the backlight side will be explained as an example.
  • the first screen end fixing part 3 and the second screen end fixing part 4 are both slidingly connected to the fixing base 2, that is, any two of the first screen end fixing part 3, the second screen end fixing part 4 and the fixing base 2 can be relative slip.
  • the moving directions of the first screen end fixing part 3 and the second screen end fixing part 4 are usually opposite. Specifically, during the transition from the contracted state to the expanded state, the first screen end fixing member 3 moves away from the winding axis 21 , while the second screen end fixing member 4 moves toward the winding axis 21 .
  • the process of changing the flexible display device from the expanded state to the contracted state is opposite, and will not be described in detail in the embodiments of this application.
  • the first elastic member 22 is installed between the fixing base 2 and the first screen end fixing part 3 and provides the first elastic force F1 to the first screen end fixing part 3. Since one end of the flexible display screen 1 is fixed on the first Therefore, the first elastic force F1 exerted by the first elastic member 22 can be transmitted to the flexible display screen 1 .
  • the second elastic member 23 is installed between the fixing base 2 and the second screen end fixing part 4 and provides the second elastic force F2 to the second screen end fixing part 4 . Since the other end of the flexible display screen 1 is fixed on the second screen end fixing member 4 , the second elastic force F2 exerted by the second elastic member 23 can also be transmitted to the flexible display screen 1 .
  • the connection method of the second screen end fixing member 4 is not limited in the embodiments of this application.
  • both the first elastic member 22 and the second elastic member 23 are spring structures.
  • the first elastic force F1 can at least partially balance the second elastic force F2, which means that the angle between the first elastic force F1 and the second elastic force F2 is less than 90°.
  • the embodiment of the present application will be specifically described by taking an example in which the angle between the first elastic force F1 and the second elastic force F2 is 0, that is, the direction of the first elastic force F1 and the second elastic force F2 are the same.
  • the direction of the first elastic force F1 is the same as the direction of the second elastic force F2, that is, the direction of the force of the first screen end fixing part 3 and the second screen end fixing part 4 is the same. Furthermore, the direction of the force on the opposite ends of the flexible display screen 1 is the same. The force direction is the same. Since the two ends of the flexible display screen 1 are respectively located on both sides of the fixing base 2 in the thickness direction Z, the existence of the first elastic force F1 and the second elastic force F2 causes both ends of the flexible display screen 1 to have a direction of winding away from each other. The tendency of the axis 21 to move, that is, the flexible display screen 1 has a tendency to extend, so that the exposed display surface remains flat.
  • the first elastic force F1 and the second elastic force F2 exert stretching forces on both ends of the flexible display screen 1 respectively, and the first elastic force F1 can balance the side of the fixing base 2 toward the first screen end fixing part 3 and the The friction generated between the flexible display screens 1, and the second elastic force F2 can balance the friction generated between the side of the fixing base 2 facing the second screen end fixing part 4 and the flexible display screen 1.
  • the existence of the first elastic force F1 and the second elastic force F2 can reduce the frictional influence on the flexible display screen 1 produced by both sides of the fixing base 2. Therefore, compared with only arranging the elastic member at one end, the frictional influence on the flexible display screen 1 caused by friction can be reduced. The risk of the force difference between the two ends being too large improves the reliability of the flexible display device.
  • the first elastic member 22 and the second elastic member 23 can provide a certain stretching force to the flexible display screen 1, it is more conducive to the deformation of the flexible display device. .
  • the flexible display device does not limit the relationship between the first elastic force F1 and the second elastic force F2, that is, the first elastic force F1 may be greater than, less than, or equal to the second elastic force F2.
  • the flexible display device can also be provided with other components according to actual needs.
  • the flexible display device further includes a circuit board fixing part 5 for installing a flexible circuit board.
  • the circuit board fixing part 5 is fixedly connected to the first screen end fixing part 3 .
  • the telescopic structural member S is provided with a decorative member 10a, a pressure frame structure 10b, a bottom cover 10c, an electronic component 10d, a control key 10e, and a control key mounting bracket 10f for installing the control key 10e.
  • the pressing frame structure 10b and the bottom cover 10c can jointly press and fix the telescopic structural member S, the electronic component 10d, the control key 10e and other components, and the decorative member 10a can play a decorative role to improve the aesthetics of the flexible display device.
  • a first guide sliding mechanism D1 is provided between the fixed base 2 and the first screen end fixing part 3, and a first sliding mechanism D1 is provided between the fixed base 2 and the second screen end fixing part 4. There is a second sliding mechanism D2.
  • the first sliding mechanism D1 is used to realize the sliding connection between the fixing base 2 and the first screen end fixing part 3.
  • the first screen end fixing part 3 can move relative to the fixing base 2 in the first direction X through the first sliding mechanism D1.
  • the second sliding mechanism D2 is used to realize the sliding connection between the fixing base 2 and the second screen end fixing part 4.
  • the second screen end fixing part 4 can move relative to the fixing base 2 along the first direction X through the second sliding mechanism D2. relative movement.
  • the embodiments of this application do not limit the structures of the first sliding guide mechanism D1 and the second sliding guide mechanism D2.
  • the first sliding guide mechanism D1 is a sliding block and chute structure that cooperate with each other, wherein one of the sliding block and the chute is located on the fixed base 2, and the other is located on the first screen end fixing member 3.
  • the second sliding guide mechanism D2 has the same principle and will not be described again in the embodiment of this application.
  • the embodiment of the present application also does not limit the number of the first sliding guide mechanisms D1. That is, the number of the first sliding mechanism D1 may be one or multiple. When the number of the first guiding mechanism D1 is multiple, multiple first guiding mechanisms D1 may be arranged side by side to improve the efficiency of the first screen. The reliability of the sliding connection between the end fixing piece 3 and the fixed seat 2 is the same as that of the second sliding guide mechanism D2.
  • the first guide sliding mechanism D1 includes a first guide slide block 24 provided on the fixing base 2 and a first screen end fixing member 3 and The first slide groove 31 extends along the first direction X, and the first guide slide block 24 is slidably installed on the first slide groove 31 .
  • the first chute 31 is located on the first screen end fixing part 3.
  • the first screen end fixing part 3 includes a first chute part 35
  • the first chute 31 is provided on the first chute part 35
  • the first chute part 35 is detachably connected to other structures in the first screen end fixing part 3 .
  • the first guide slide block 24 is located on the fixed base 2.
  • the first guide slide block 24 can be detachably connected to other structures of the fixed base 2.
  • the first slide groove 31 extends along the first direction X.
  • the first guide slide block 24 is installed in the first slide groove 31 and can slide relatively along the first direction X in the first slide groove 31 .
  • the first screen end fixing part 3 realizes relative movement with the fixing base 2 in the first direction X through the cooperation of the first slide groove 31 and the first guide slide block 24 .
  • the first direction X intersects the thickness direction Z.
  • the first direction X is perpendicular to the thickness direction Z
  • the first direction X is the expansion and contraction direction of the flexible display device.
  • the second sliding mechanism D2 includes a second slide groove 25 provided on the fixed base 2 extending along the first direction X and a third slide provided on the second screen end fixing member 4 .
  • the second guide slide block 41 is slidably installed on the second slide groove 25 .
  • the second slide groove 25 is located on the fixing base 2 and extends along the first direction One direction X slides relatively.
  • the second screen end fixing piece 4 realizes relative movement with the fixing base 2 in the first direction X through the cooperation of the second slide groove 25 and the second guide slide block 41 .
  • the fixed base 2 includes a guide sliding mounting part 28 , and the first sliding sliding block 24 and the second sliding groove 25 are both disposed on the sliding guiding mounting part 28 .
  • the guide sliding mounting part 28 is the part of the fixed base 2 used to set the first guiding sliding block 24 and the second sliding groove 25.
  • the second sliding groove 25 can be formed by digging out the guiding sliding mounting part 28, and the first guiding sliding groove 25 can be formed by digging out the guiding sliding mounting part 28.
  • the slider 24 can be fixedly connected to the guide sliding mounting portion 28 through bolt connection or other means.
  • the first guide slide block 24 and the second slide groove 25 are arranged side by side in the second direction Y.
  • the guide sliding installation part 28 simultaneously realizes the installation settings of the first guide slide block 24 and the second slide groove 25. Furthermore, the first guide slide block 24 and the second slide groove 25 can share the guide slide installation. Part of the structure in section 28 is used to achieve installation. This design can reduce the occupation of the internal space of the flexible display device by the first sliding mechanism D1 and the second sliding mechanism D2 and improve space utilization.
  • the fixed base 2 further includes a support beam 26 extending along the second direction Y, the first direction X intersects the second direction Y, and the guide sliding mounting portion 28 is connected to the support beam 26 .
  • the support beam 26 is connected to the guide sliding mounting portion 28 and remains fixed in position.
  • the support beam 26 extends along the second direction Y.
  • the first direction X intersects the second direction Y.
  • the thickness direction Z is set vertically in pairs.
  • the support beam 26 extends along the second direction Y, if the number of the sliding guide mounting portions 28 is multiple, the plurality of sliding sliding mounting portions 28 will be arranged side by side in the second direction Y.
  • the number of the sliding guide mounting parts 28 is two, and the two sliding sliding mounting parts 28 are provided at both ends of the support beam 26 in the second direction Y.
  • multiple guide sliding mounting parts 28 can be provided on the fixed base 2 at the same time, and the relative positions of the multiple guiding sliding mounting parts 28 can be fixed, thereby improving the fixed base 2 The reliability of the sliding connection with the first screen end fixing part 3 and between the fixing base 2 and the second screen end fixing part 4.
  • the winding axis 21 and the guide sliding mounting portion 28 are located on both sides of the support beam 26 in the first direction X.
  • the support beam 26 is used to connect the guide sliding installation part 28. At the same time, the support beam 26 also separates the winding axis 21 and the guide sliding installation part 28, so that the winding axis 21 and the guide sliding installation part 28 are separately located on the support beam in the first direction X. 26 on both sides.
  • This design can reduce the influence of the movement of the first screen end fixing part 3 and the second screen end fixing part 4 on the rotation around the axis 21 and improve the reliability of the internal structure of the flexible display device.
  • the fixed base 2 also includes a lifting lug structure connected to the support beam 26.
  • the lifting lug structure is located on the side of the support beam 26 away from the guide sliding mounting portion 28.
  • the lifting lug structure is provided with a structure along the first direction. The through hole through which
  • the fixed base 2 further includes an elastic member mounting portion 27 connected to the guide sliding mounting portion 28. At least one of the first elastic member 22 and the second elastic member 23 is installed on the elastic member mounting portion 27. The output end of an elastic member 22 is connected to the first screen end fixing member 3 , and the output end of the second elastic member 23 is connected to the second screen end fixing member 4 .
  • the elastic member mounting part 27 is connected to the guide sliding mounting part 28 , and the guiding sliding mounting part 28 is connected to the support beam 26 .
  • the embodiment of the present application does not limit the relative positional relationship between the support beam 26 and the elastic member mounting portion 27 .
  • the support beam 26 and the elastic member mounting portion 27 are spaced apart in the first direction X.
  • the elastic component mounting part 27 is used to install at least one of the first elastic component 22 and the second elastic component 23 .
  • both the first elastic component 22 and the second elastic component 23 are fixed on the elastic component mounting part 27 .
  • the embodiment of the present application does not limit the connection relationship between the first elastic member 22 or the second elastic member 23 and the elastic member mounting portion 27 .
  • the first elastic member 22 and the second elastic member 23 are fixed to the elastic member mounting portion 27 by welding or bonding.
  • the output end of the first elastic member 22 is connected to the first screen end fixing member 3 and can move synchronously with the first screen end fixing member 3.
  • the first elastic member 22 applies the first elasticity to the first screen end fixing member 3 through the output end.
  • Force F1 the connection method between the output end of the first elastic member 22 and the first screen end fixing member 3 includes but is not limited to bonding and welding.
  • the output end of the second elastic member 23 is connected to the second screen end fixing member 4 and can move synchronously with the second screen end fixing member 4.
  • the second elastic member 23 applies the second elasticity to the second screen end fixing member 4 through the output end.
  • Force F2 the connection method between the output end of the second elastic member 23 and the second screen end fixing member 4 includes but is not limited to bonding and welding.
  • the first screen end fixing part 3 includes a first body 32 and a first connecting part 33 disposed on the side of the first body 32 facing the second screen end fixing part 4 , and the first elastic The output end of the component 22 is connected to the first connecting part 33 .
  • the first body 32 can have a plate-like structure, and the first connecting portion 33 is connected to the first body 32. Similarly, the first chute portion 35 can also be connected to the first body 32. The first chute portion 35 and the first connecting portion 33 is disposed in an offset position on the first body 32 .
  • the first connection part 33 is used to realize the connection and fixation of the first screen end fixing part 3 and the output end of the first elastic member 22.
  • the first elastic part 22 applies the first elasticity to the first screen end fixing part 3 through the first connection part 33. Force F1.
  • the second screen end fixing part 4 includes a second body 42 and a second connecting part 43 disposed on the side of the second body 42 facing the first screen end fixing part 3 , the output end of the second elastic member 23 is connected to the second connecting portion 43 .
  • the second body 42 can also have a plate-like structure, and the second connecting portion 43 is connected to the second body 42.
  • the second slide guide 41 can also be connected to the second body 42.
  • the two connecting portions 43 and the second guide slider 41 are located on the same side of the second body 42 in the thickness direction Z and are offset from each other.
  • the second connection part 43 is used to realize the connection and fixation of the second screen end fixing part 4 and the output end of the second elastic member 23.
  • the second elastic part 23 applies the second elasticity to the second screen end fixing part 4 through the second connection part 43. Force F2.
  • the flexible display device further includes an exhibition part support 6 , the exhibition part support 6 is fixed on the fixed base 2 , and the exhibition part support 6 is disposed on the first body.
  • the 32 part faces the side of the second screen end fixing part 4, the exhibition part support part 6 is provided with an escape groove 61, and the first connecting part 33 is configured to be able to slide in the escape groove 61.
  • the exhibition part support part 6 is fixed on the fixed base 2, and the exhibition part support part 6 and the first screen end fixing part 3 can slide relative to each other.
  • the flexible display device changes from the contracted state to the expanded state, relative sliding will occur between the first screen end fixing part 3 and the fixing base 2, and part of the structure of the flexible display screen 1 will be located above the fixing base 2, and Display a specific image screen.
  • the fixing base 2 is not a whole-surface structure, it is difficult to meet the need of supporting the flexible display screen 1 by relying solely on the fixing base 2 .
  • the embodiment of the present application adds an exhibition part support 6 , which is connected and fixed with the fixed base 2 , that is, the exhibition part support 6 can slide relative to the first screen end fixing part 3 , and the exhibition part support 6 can replace the fixed seat 2 to play a front support role for the flexible display screen 1, so that in the unfolded state, the part of the flexible display screen 1 used to achieve the display effect can be better supported. , improve the reliability and service life of flexible display devices.
  • the embodiment of the present application is provided with an escape groove 61 on the exhibition part support 6.
  • the escape groove 61 extends along the first direction X, and at least part of the first connection part 33 is located in the escape groove 61. , and can slide relative to the escape groove 61 . This design can avoid contact between the first screen end fixing part 3 and the display part support part 6 during the expansion and contraction process of the flexible display device, thereby improving reliability.
  • the exhibition support member 6 and the first screen end fixing member 3 are at least partially overlapped in the thickness direction Z.
  • the "exhibition part support 6 and the first screen end fixing part 3 are at least partially overlapped in the thickness direction Z" mentioned in the embodiment of this application means that in the contracted state, the exhibition support part is arranged along the thickness direction Z. There is an overlap between the orthographic projection in the direction Z and the orthographic projection of the first screen end fixing member 3 along the thickness direction Z.
  • the exhibition part support member 6 can at least partially overlap with the first screen end fixing member 3 in the thickness direction Z in the contracted state, the exhibition part support member 6 can help fix the first screen end in the contracted state.
  • the parts 3 jointly support the display part of the flexible display screen 1, thereby improving the reliability of the flexible display device in the contracted state.
  • the size of the overlapping area of the orthographic projection of the exhibition support member 6 and the first screen end fixing member 3 along the thickness direction Z gradually decreases.
  • the portion of the exhibition support member 6 beyond the first screen end fixing member 3 also supports the flexible display screen 1 .
  • the exhibition part support 6 may be arranged to at least partially overlap with the first screen end fixing part 3 in the thickness direction Z, or may not overlap with the first screen end fixing part 3 There is an overlapping area in the thickness direction Z, which is not limited in the embodiments of the present application.
  • the flexible display device further includes a curved support member 7.
  • the curved support member 7 has opposite first ends 71 and second ends 72 in its extending direction. One end 71 is fixed to the first screen end fixing part 3 , and the second end 71 is fixed to the second screen end fixing part 4 .
  • the curved support 7 is also used to support the flexible display screen 1 . But the difference is that the curved support member 7 will be relatively curved and cover at least part of the structure around the axis 21 .
  • the bending support member 7 has a first end 71 and a second end 72. The first end 71 can be fixed to the first screen end fixing member 3 by welding or bonding, and then the bending support member 7 is formed from the first end.
  • the first screen end fixing part 3 When the flexible display device is unfolded or partially unfolded, the first screen end fixing part 3 will drive the first end 71 of the bending support 7 to move in a direction away from the axis 21 , and the second screen end fixing part 4 will drive the bending support
  • the second end 72 of the member 7 moves in a direction closer to the axis 21, and the size of the curved support member 7 located on the side of the fixing base 2 close to the first screen end fixing member 3 gradually increases, and the displayable screen size of the flexible display device increases. big.
  • the flexible display screen 1 at the position around the axis 21 can be supported, thereby improving the reliability of the flexible display device during the expansion and contraction process.
  • the curved support member 7 can be a flexible structure, so that bending deformation can occur; or the curved support member 7 can also be a bendable rigid structure, so as to improve the flexibility of the display. The support effect of screen 1.
  • At least part of the structure of the curved support 7 is in contact with the exhibit support 6 .
  • the first end 71 of the bending support member 7 is connected to the first screen end fixing member 3, at least part of the structure of the bending support member 7 is located on the side of the fixing base 2 facing the first screen end fixing member 3, and the bending support member 7 At least part of the structure will be arranged opposite to the exhibition part support 6 in the thickness direction Z.
  • part of the structure of the curved support member 7 is in contact with the exhibition part support member 6.
  • the flexible display screen 1 can obtain the curved support member 7 and the exhibition part at the position of the exhibition part support member 6 at the same time.
  • the support of the support member 6 achieves a double support effect and improves the support effect of the flexible display device 1 inside the flexible display device.
  • one end of the flexible display screen 1 is fixed to an end of the first body 32 away from the axis 21 .
  • the first body 32 itself has a plate-like structure, and one end of the flexible display screen 1 is fixed on the end of the first body 32 away from the axis 21 , most of the structure of the first body 32 in the first screen end fixing part 3 can be It plays a supporting role for the flexible display screen 1, thereby reducing the risk of deformation of the flexible display screen 1 under the action of external force.
  • one end of the flexible display screen 1 is fixed to an end of the second body 42 away from the axis 21 .
  • the second body 42 itself has a plate-like structure, and one end of the flexible display screen 1 is fixed on the end of the second body 42 away from the axis 21 , most of the structure of the second body 42 in the first screen end fixing part 3 can be It plays a supporting role for the flexible display screen 1, thereby reducing the risk of deformation of the flexible display screen 1 under the action of external force.
  • the exhibition part support 6 is disposed on a side of the first screen end fixing part 3 close to the second screen end fixing part 4, and the curved support part 7 includes a flexible support part 73 and is disposed close to the flexible support part 73.
  • the rigid support part 74 on one side of the exhibition part support 6 is in contact with the exhibition part support 6 .
  • the bending support part 7 includes a flexible support part 73 and a rigid support part 74 .
  • the flexible support part 73 can meet the bending needs of the bending support part 7
  • the rigid support part 74 can improve the support strength of the bending support part 7 .
  • the two cooperate with each other to meet the use needs of flexible display devices.
  • a rigid support part 74 is provided on the flexible support part 73, and the rigid support part 74 is arranged in the gap space between the flexible support part 73 and the exhibition part support 6, so that the flexible support part 73 can obtain rigidity.
  • the support of the supporting part 74 reduces the risk of deformation of the flexible supporting part 73 and increases the service life of the flexible display device.
  • the rigid support part 74 can also realize mutual contact between the curved support part 7 and the exhibition part support part 6, thereby achieving a dual support effect for the flexible display screen 1 and improving the reliability of the flexible display device.
  • the rigid support portions 74 are strip-shaped and have a plurality of numbers.
  • the plurality of rigid support portions 74 are spaced apart in the extension direction of the flexible support portion 73 .
  • the flexible support part 73 has a strong bending ability, while the rigid support part 74 has a weak bending ability. If the rigid support part 74 is provided as a single plate-like structure, it is difficult for the bending support part 7 to meet the bending needs.
  • each rigid support portion 74 is a strip-shaped structure extending along the second direction Y, and the spacing size between any two adjacent rigid support portions 74 remains consistent.
  • the bending needs of the bending support 7 can also be met while meeting the structural strength of the bending support 7 , which has high practicality and reliability.
  • the flexible support part includes a third region A3 and first and second regions A1 and A2 located on both sides of the third region A3 in the extension direction of the curved support member 7 , and the rigid support part 74 is disposed on the third region A3 .
  • the first end 71 is arranged in the first area A1
  • the second end 72 is arranged in the second area A2.
  • the flexible support part 73 has at least three areas: a first area A1, a second area A2, and a third area A3.
  • the first end 71 is located in the first area A1.
  • the first end 71 is used to realize the bending support member 7 and the first screen.
  • the second end 72 is located in the second area A2, and is used to connect and fix the bending support 7 and the second screen end fixing member 4.
  • the third area A3 is sandwiched between the first area A1 and the second area A2. At least part of the structure of the flexible support part 73 in the third area A3 is provided around the axis 21 to cover it.
  • the flexible support part 73 can be directly contacted and fixed with the first screen end fixing part 3 and the second screen end fixing part 4. Therefore, the embodiment of the present application does not provide any connection between the first area A1 and the second area A2.
  • a rigid support portion 74 is provided in the second area A2.
  • the exhibition part support part 6 can move toward the third part of the flexible support part 73 through the rigid support part 74.
  • the third area A3 provides support, and the flexible display screen 1 can obtain the dual support effect of the exhibition part support 6 and the rigid support part 74 at the third area A3.
  • One end of the first screen end fixing member 3 close to the curved support member 7 has a first recess 34, and the first end 71 of the flexible support portion 73 It is provided on the first concave platform 34 , and the thickness of the flexible support part 73 is the same as the depth of the first concave platform 34 .
  • the “thickness of the flexible support part 73" mentioned in the embodiment of this application refers to: the size of the flexible support part 73 in the thickness direction Z; the “depth of the first concave platform 34” refers to: the first concave platform 34 Dimensions in thickness direction Z.
  • the first recess 34 on the first screen end fixing member 3 is used to receive the first end 71 of the flexible support part 73.
  • the first end 71 of the flexible support part 73 can be fully adapted to the first recess 34 , and there will be no convex or concave structure at the connection position between the first screen end fixing part 3 and the flexible support part 73 , that is, the flexible support part 73
  • a flat surface can be formed at the connection position with the first screen end fixing member 3, so that the flexible display screen 1 can be better carried.
  • the second screen end fixing part 4 may also be provided with a second concave platform, and the second concave platform is used to accommodate the second end 72 of the flexible support part 73 , and ensure that a flat surface can be formed at the connection position between the flexible support portion 73 and the second screen end fixing member 4 to better support the flexible display screen 1 .
  • the flexible display device further includes at least one of a power providing structure 8 and a stress balancing structure 9 .
  • the power supply structure 8 and the stress balancing structure 9 are provided between the first screen end fixing part 3 and the fixing base 2 or between the second screen end fixing part 4 and the fixing base 2 or between the fixing base 2 and the winding shaft 21; power supply The providing structure 8 is configured to provide a driving force for the relative movement of the fixing base 2 and the first screen end fixing part 3 and an anchoring force (a force to maintain the relative position unchanged) when the fixing base 2 and the first screen end fixing part 3 are relatively fixed.
  • the stress balancing structure 9 is configured to provide an anchoring force when the fixing base 2 is fixed relative to the first screen end fixing part 3 .
  • the power supply structure 8 is a structure that can actively provide power to the fixing base 2 or the first screen end fixing member 3, and the specific position of the power supply structure 8 is not limited in the embodiment of this application.
  • the power supply structure 8 can be located between the first screen end fixing part 3 and the fixing base 2, or between the second screen end fixing part 4 and the fixing base 2, or between the fixing base 2 and the winding shaft 21. That is, as long as the power supply structure 8 can provide power to at least one of the fixing base 2 or the first screen end fixing part 3 .
  • the power supply structure 8 can realize automatic contraction or expansion of the flexible display device. At the same time, when the flexible display device is in a contracted state or an expanded state, the power supply structure 8 can also provide a certain stress so that the fixing base 2 and the first screen end fixing member 3 can remain relatively fixed.
  • the stress balancing structure 9 can provide a certain resistance to the fixing base 2 or the first screen end fixing member 3 during the expansion and contraction process of the flexible display device, so that it can move smoothly. At the same time, when the flexible display device is in a contracted state or an expanded state, the stress balance structure 9 can also provide a certain stress so that the fixing base 2 and the first screen end fixing member 3 can remain relatively fixed.
  • the power supply structure 8 includes a motor screw module.
  • the motor screw module includes a mounting base 81, a driver 82, a transmission member 83 and a threaded block 84.
  • the mounting base 81 is fixed on the first screen end fixing member 3, and the driver 82 and transmission member 83 are both provided on the mounting base. 81 on.
  • the driver 82 may be a servo motor or a stepper motor, and the transmission member 83 may be a threaded rod.
  • the transmission member 83 extends along the first direction X. Both ends of the transmission member 83 can be rotationally connected to the mounting base 81 through rolling bearings or sliding bearings, and the driver 82 can drive the transmission member to rotate.
  • the threaded block 84 is threadedly connected to the transmission member 83 and is connected and fixed with the fixed base 2.
  • the threaded block 84 can move in the first direction X and drive the first screen end fixing member 3 to face each other.
  • Fixed base 2 moves.
  • the fixing base 2 includes a connecting arm 29.
  • the threaded block 84 is fixedly connected to the connecting arm 29. The cooperative action of the threaded block 84 and the transmission member (screw) 83 can cause the first screen end fixing member 3 to connect with the fixing base. 2 relative movement.
  • the sum of the power F3 provided by the power supply structure 8 and the first elastic force F1 needs to be controlled to be equal to the second elastic force F2.
  • the gap between the first elastic force F1 and the second elastic force F2 is smaller, it means that the power F3 that the power supply structure 8 needs to provide is smaller, and it is easier to realize the thinning of the power supply structure 8 and the flexible display device.
  • the stress balancing structure 9 includes a damper.
  • the damper can play a role in buffering external forces.
  • the damping generated by the damper can be transmitted to the fixing base 2 and the first screen end fixing member 3, thereby alleviating external forces and other factors.
  • the instantaneous impact on the flexible display screen 1 prevents the flexible display device from expanding and contracting too quickly and ensures that the flexible display screen 1 can expand and contract smoothly.
  • the damper can also provide a certain resistance to prevent the flexible display device from expanding or contracting without external force, thereby improving the reliability of the flexible display device.
  • the stress balancing structure 9 cannot realize automatic contraction or expansion of the flexible display device. Therefore, when the stress balancing structure 9 is used, the flexible display device needs to be manually pulled to achieve expansion and contraction of the flexible display device. In this process, the first elastic force F1 and the second elastic force F2 can play the same role as the stress balancing structure 9 to a certain extent, thereby ensuring that the flexible display device can expand and contract at a constant speed and stably.
  • the first elastic member 22 and the second elastic member 23 are constant force springs, that is, the magnitude of the first elastic force F1 or the second elastic force F2 does not change with the movement of its corresponding output end.
  • the tensile force exerted by the flexible display screen 1 during the sliding process will increase as the amount of stretching increases. This will cause the flexible display screen 1 to receive a larger force in the unfolded state, making it easier to Problems such as display abnormalities occur.
  • the stress on both ends of the flexible display screen 1 will not change as the state of the flexible display device changes. In this way, the stress on the flexible display screen 1 in the unfolded state can be made more stable, thereby reducing the risk of display abnormalities.
  • the magnitudes of the first elastic force F1 and the second elastic force F2 are both constant.
  • the ratio of the first elastic force F1 to the second elastic force F2 is A, and A satisfies: 70% ⁇ A ⁇ 130%.
  • the first elastic force F1 and the second elastic force F2 respectively play a stretching function on both ends of the flexible display screen 1.
  • the embodiment of the present application uses the first elastic force F1
  • the ratio A to the second elastic force F2 is set between 70% and 130%.
  • A is one of 70%, 85%, 100%, 110%, and 130%.
  • the power supply structure 8 when the power supply structure 8 is not used, but only the stress balancing structure (damper) is used, during the expansion and retraction process of the flexible display device, when the flexible display device expands and retracts at approximately a constant speed, the user needs to provide a role.
  • the sum of the force and the first elastic force F1 is slightly larger or slightly smaller than the second elastic force F2.
  • the gap between the first elastic force F1 and the second elastic force F2 is smaller, it means that the user needs to provide smaller force, making the operation easier; at the same time, after expansion, retraction and partial expansion, In the static state, the smaller the balancing force provided by the stress balancing structure (damper) is required, the easier it is to achieve miniaturization of the stress balancing structure (damper), thereby making the flexible display device lighter and thinner.
  • the first elastic force F1 and the second elastic force F2 are equal in magnitude, which can further reduce the size of the power supply structure 8 and/or the stress balancing structure (damper), and better achieve the thinning and lightness of the flexible display device. .
  • the embodiment of the present application makes the stress on both ends of the flexible display screen 1 relatively stable and consistent, thereby improving the flexibility of the flexible display device during the expansion and contraction process. Displays the smoothness of the device's expansion and contraction.
  • the number of first elastic members 22 is two, and the two first elastic members 22 are arranged side by side.
  • the output end of the first elastic member 22 is connected to the first screen end fixing member 3, and the first elastic member 22 provides the first elastic force F1 to the flexible display screen 1 through the first screen end fixing member 3.
  • the existence of the first elastic force F1 can reduce the amount of stress required when the flexible display device changes from a telescopic state to an unfolded state, further reducing the number or size of the power supply structure 8 or the stress balancing structure 9 to a certain extent. , so that more other components can be installed inside the flexible display device, and the overall size of the flexible display device can be reduced.
  • the number of the second elastic members 23 is two, and the two second elastic members 23 are arranged side by side.
  • Two first elastic members 22 and two second elastic members 23 are arranged correspondingly.
  • the two first elastic members 22 and the two second elastic members 23 can stretch both ends of the flexible display screen 1 at the same time, so that Reduce the problem of abnormal display on flexible display screen 1.
  • two second elastic parts 23 are located between the two first elastic parts 22 .
  • the two first elastic members 22 or the two second elastic members 23 are arranged symmetrically with respect to the central position of the flexible display device.
  • the “central position” mentioned in the embodiments of this application specifically refers to the structure at the middle position in the second direction of the flexible display device. This design makes the tensile force generated by the first elastic member 22 or the second elastic member 23 on the flexible display screen 1 more balanced, which can effectively avoid display abnormalities caused by uneven stress on various parts of the flexible display screen 1 .

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Abstract

提供了一种柔性显示装置，包括固定座(2)、绕轴(21)、第一屏端固定件(3)、第二屏端固定件(4)、柔性显示屏(1)、第一弹性件(22)以及第二弹性件(23)。绕轴(21)设置于固定座(2)上，第一屏端固定件(3)可滑动地装设于固定座(2)上且滑动方向垂直于绕轴(21)的轴向，第二屏端固定件(4)可滑动地装设于固定座(2)上且滑动方向垂直于绕轴(21)的轴向。柔性显示屏(1)绕过绕轴(21)，柔性显示屏(1)的一端固定于第一屏端固定件(3)上，另一端固定于第二屏端固定件(4)上。第一弹性件(22)装设于固定座(2)与第一屏端固定件(3)之间，并向第一屏端固定件(3)提供第一弹性力(F1)；第二弹性件(23)装设于固定座(2)与第二屏端固定件(4)之间，并向第二屏端固定件(4)提供第二弹性力(F2)。其中，第一弹性力(F1)能够至少部分平衡第二弹性力(F2)。

Description

柔性显示装置
相关申请的交叉引用
本申请要求享有于2022年8月31日提交的名称为“柔性显示装置”的中国专利申请202211052319.X的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本申请涉及显示技术领域，特别是涉及一种柔性显示装置。
背景技术
随着显示设备技术的发展，显示装置发展出丰富多样的使用形态。其中作为新兴显示产品的柔性卷曲显示装置以及柔性滑移拉伸显示装置也是未来发展的一种趋势。卷曲对于柔性屏及终端结构的要求较高，现阶段实现量产还有一定的难度，但滑移拉伸形态的显示装置符合当前移动终端的发展需要，它可以实现屏幕的展开和缩回。
发明内容
本申请提供一种柔性显示装置，能够降低出现显示异常的风险。
本申请实施例提供了一种柔性显示装置，包括固定座、绕轴、第一屏端固定件、第二屏端固定件、柔性显示屏、第一弹性件以及第二弹性件；
绕轴设置于固定座上，第一屏端固定件可滑动地装设于固定座上且滑动方向垂直于绕轴的轴向，第二屏端固定件可滑动地装设于固定座上且滑动方向垂直于绕轴的轴向。柔性显示屏绕过绕轴，柔性显示屏的一端固定于第一屏端固定件上，另一端固定于第二屏端固定件上；
第一弹性件装设于固定座与第一屏端固定件之间，并向第一屏端固定件提供第一弹性力；第二弹性件装设于固定座与第二屏端固定件之间，并 向第二屏端固定件提供第二弹性力；
其中，第一弹性力能够至少部分平衡第二弹性力。
本申请实施例提供一种柔性显示装置，第一弹性力和第二弹性力分别对柔性显示屏的两端施加拉伸作用力，第一弹性力可以平衡固定座朝向第一屏端固定件一侧与柔性显示屏之间所产生的摩擦，而第二弹性力可以平衡固定座朝向第二屏端固定件一侧与柔性显示屏之间所产生的摩擦。第一弹性力和第二弹性力的存在能够减少固定座两侧对柔性显示屏所产生的摩擦影响，从而能够降低因摩擦力导致的柔性显示屏两端的受力差距过大的风险，提高柔性显示装置的使用可靠性。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对本申请实施例中所需要使用的附图作简单地介绍，显而易见地，下面所描述的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据附图获得其他的附图。
图1是本申请实施例提供的一种柔性显示装置在收缩状态下的结构示意图；
图2是本申请实施例提供的一种柔性显示装置在展开状态下的结构示意图；
图3是本申请实施例提供的一种柔性显示装置的爆炸结构示意图；
图4是本申请实施例提供的一种柔性显示装置中伸缩结构件的爆炸结构示意图；
图5是本申请实施例提供的一种柔性显示装置在收缩状态下中的伸缩结构件的结构简图；
图6是本申请实施例提供的一种柔性显示装置在展开状态下中的伸缩结构件的结构简图；
图7是本申请实施例提供的本申请实施例提供的一种柔性显示装置中固定座的结构示意图；
图8是申请实施例提供的本申请实施例提供的一种柔性显示装置中第一导滑机构的结构示意图；
图9是本申请实施例提供的本申请实施例提供的一种柔性显示装置中第二屏端固定件的结构示意图
图10是本申请实施例提供的一种柔性显示装置中伸缩结构件在收缩状态下的结构示意图；
图11是本申请实施例提供的一种柔性显示装置中伸缩结构件在展开状态下的结构示意图；
图12是本申请实施例提供的一种柔性显示装置中第一弹性件与第一屏端固定件的配合结构示意图；
图13是本申请实施例提供的一种柔性显示装置中弯曲支撑件的结构示意图；
图14是本申请实施例提供的一种柔性显示装置中第一屏端固定件的结构示意图；
图15是本申请实施例提供的还一种柔性显示装置中伸缩结构件的爆炸结构示意图；
图16是本申请实施例提供的一种柔性显示装置中动力提供结构的结构示意图。
具体实施方式
下面结合附图和实施例对本申请的实施方式作进一步详细描述。以下实施例的详细描述和附图用于示例性地说明本申请的原理，但不能用来限制本申请的范围，即本申请不限于所描述的实施例。
申请人通过研究发现，实现滑移拉伸的柔性显示装置在滑移过程中，柔性显示屏需要随滑动端同步伸缩，同时柔性显示屏会相对绕轴产生移动。在这个过程中，柔性显示屏中隐藏在柔性显示装置内部的一端会持续受到拉伸作用力，但是由于例如柔性显示屏与绕轴间摩擦等因素的影响，会在 柔性显示屏中间位置处平衡部分拉伸作用力，从而导致柔性显示屏的中位于出光面上的一端的受力小于另一端所受到的拉伸作用力。在这种情况下，为了保证位于柔性显示屏出光面上的一端能够受到足够的外力，以实现柔性显示装置的展开，因此需要提供较大的拉伸作用力，并且拉伸作用力会随滑动距离的增大而增大，从而容易出现显示异常的问题。
为了解决上述问题，请参阅图1至图6，本申请实施例提供了一种柔性显示装置，包括固定座2、绕轴21、第一屏端固定件3、第二屏端固定件4、柔性显示屏1、至少一个第一弹性件22以及至少一个第二弹性件23。
绕轴21设置于固定座2上，第一屏端固定件3可滑动地装设于固定座2上且滑动方向垂直于绕轴21的轴向，第二屏端固定件4可滑动地装设于固定座2上且滑动方向垂直于绕轴21的轴向。柔性显示屏1绕过绕轴21，柔性显示屏1的一端固定于第一屏端固定件3上，另一端固定于第二屏端固定件4上。
第一弹性件22装设于固定座2与第一屏端固定件3之间，并向第一屏端固定件3提供第一弹性力F1；第二弹性件23装设于固定座2与第二屏端固定件4之间，并向第二屏端固定件4提供第二弹性力F2。其中，第一弹性力F1能够至少部分平衡第二弹性力F2。
本申请实施例提供的柔性显示装置至少包括两种状态，即收缩状态以及展开状态，相较于收缩状态，柔性显示装置在展开状态下的可显示画面的尺寸更大，从而能够提高用户的使用体验。
柔性显示屏1为柔性显示装置中用于实现显示功能的主要部件，当柔性显示装置使用时，对应的图像信息需要传递至柔性显示屏1中，并通过柔性显示屏1实现显示。
柔性显示装置包括伸缩结构件S，固定座2、绕轴21、第一屏端固定件3、第二屏端固定件4、第一弹性件22以及第二弹性件23均包括在伸缩结构件S内，伸缩结构件S自身能够发生形变，伸缩结构件S为柔性显示装置内用于实现伸缩效果的主要组件。
固定座2用于安装绕轴21，绕轴21转动连接于固定座2上，在收缩状态下，柔性显示屏1中的部分结构会围绕绕轴21弯曲，以使柔性显示屏1 中的至少部分能够隐藏于柔性显示装置的内部。在柔性显示装置由收缩状态转变为展开状态的过程中，柔性显示屏1会相对绕轴21相对移动，并且绕轴21会相对固定座2转动，柔性显示屏1中的部分结构会从柔性显示装置内部露出，从而能够增大柔性显示装置的可显示画面的尺寸大小。
柔性显示屏1在自身延伸方向上具有相对的两端，其中一端固定于第一屏端固定件3，另一端固定于第二屏端固定件4。由于柔性显示屏1需要绕过绕轴21设置，因此柔性显示屏1的两端分别位于固定座2在柔性显示装置的厚度方向Z上的两侧。进一步地可知，第一屏端固定件3以及第二屏端固定件4分别位于固定座2在厚度方向Z上的两侧。
需要说明的是，第一屏端固定件3和第二屏端固定件4中的一者位于固定座2靠近柔性显示装置出光面的一侧，另一者位于固定座2靠近柔性显示装置背光面的一侧，本申请实施例对此不作限制。为了更清楚描述本申请的技术方案，本申请后续以第一屏端固定件3位于固定座2靠近柔性显示装置出光面的一侧，第二屏端固定件4位于固定座2靠近柔性显示装置背光面的一侧为例进行说明。
第一屏端固定件3与第二屏端固定件4均与固定座2滑动连接，即第一屏端固定件3、第二屏端固定件4以及固定座2中的任意两者均可以相对滑移。当柔性显示装置在收缩状态以及展开状态之间转变的过程中，第一屏端固定件3与第二屏端固定件4的移动方向通常相反。具体地说，在由收缩状态向展开状态转变的过程中，第一屏端固定件3向远离绕轴21的方向移动，而第二屏端固定件4则向靠近绕轴21的方向移动。而柔性显示装置由展开状态转变为收缩状态的过程与之相反，本申请实施例不再赘述。
第一弹性件22装设在固定座2与第一屏端固定件3之间，并向第一屏端固定件3提供第一弹性力F1，而由于柔性显示屏1的一端固定于第一屏端固定件3上，因此第一弹性件22施加的第一弹性力F1能够传递至柔性显示屏1上。第二弹性件23装设在固定座2与第二屏端固定件4之间，并向第二屏端固定件4提供第二弹性力F2。而由于柔性显示屏1的另一端固定于第二屏端固定件4上，因此第二弹性件23施加的第二弹性力F2同样能够传递至柔性显示屏1上。
对于第一弹性件22与第二弹性件23的结构尺寸、第一弹性件22相对于固定座2和第一屏端固定件3的连接方式以及第二弹性件23相对于固定座2和第二屏端固定件4的连接方式，本申请实施例均不作限制。示例性地，第一弹性件22与第二弹性件23均为弹簧结构。
第一弹性力F1能够至少部分平衡第二弹性力F2，即表明第一弹性力F1与第二弹性力F2之间的夹角小于90°。接下来本申请实施例将以第一弹性力F1与第二弹性力F2之间的夹角为0，即第一弹性力F1的方向与第二弹性力F2的方向相同为例进行具体说明。
第一弹性力F1的方向与第二弹性力F2的方向相同，即第一屏端固定件3与第二屏端固定件4的受力方向相同，进一步地，柔性显示屏1相对两端的受力方向相同。由于柔性显示屏1的两端分别位于固定座2在厚度方向Z上的两侧，因此第一弹性力F1和第二弹性力F2的存在，使得柔性显示屏1的两端均具有向远离绕轴21方向移动的趋势，即柔性显示屏1的具有伸长的趋势，从而使外露的显示面保持平展。
由此，第一弹性力F1和第二弹性力F2分别对柔性显示屏1的两端施加拉伸作用力，第一弹性力F1可以平衡固定座2朝向第一屏端固定件3一侧与柔性显示屏1之间所产生的摩擦，而第二弹性力F2可以平衡固定座2朝向第二屏端固定件4一侧与柔性显示屏1之间所产生的摩擦。第一弹性力F1和第二弹性力F2的存在能够减少固定座2两侧对柔性显示屏1所产生的摩擦影响，从而相对只在一端设置弹性件能够降低因摩擦力导致的柔性显示屏1两端的受力差距过大的风险，提高柔性显示装置的使用可靠性。
此外，当柔性显示装置在收缩状态以及展开状态间转换过程中，由于第一弹性件22和第二弹性件23可以向柔性显示屏1提供一定的拉伸力，从而更利于柔性显示装置的变形。
需要说明的是，对于第一弹性力F1和第二弹性力F2的大小关系，本申请实施例不作限制，即第一弹性力F1可以大于、小于或者等于第二弹性力F2。并且柔性显示装置除了包括上述部件外，还可以根据实际使用需要设置有其他部件。示例性地，柔性显示装置还包括用于安装柔性电路板的电路板固定件5，电路板固定件5与第一屏端固定件3固定连接。伸缩结构 件S外设置有装饰件10a、压框结构10b、底盖10c、电子组件10d、控制键10e以及用于安装控制键10e的控制键安装架10f。其中，压框结构10b以及底盖10c能够共同将伸缩结构件S、电子组件10d以及控制键10e等部件压合固定，装饰件10a能够起到装饰作用，以提高柔性显示装置的美观性。
在一些实施例中，请参阅图7至图11，固定座2与第一屏端固定件3之间设置有第一导滑机构D1，固定座2与第二屏端固定件4之间设置有第二导滑机构D2。
第一导滑机构D1用于实现固定座2与第一屏端固定件3之间的滑动连接，第一屏端固定件3能够通过第一导滑机构D1相对固定座2沿第一方向X相对移动。第二导滑机构D2用于实现固定座2与第二屏端固定件4之间的滑动连接，第二屏端固定件4能够通过第二导滑机构D2相对固定座2沿第一方向X相对移动。
对于第一导滑机构D1和第二导滑机构D2的结构，本申请实施例不作限制。示例性地，第一导滑机构D1为相互配合的滑块和滑槽结构，其中，滑块与滑槽中的一者位于固定座2上，另一者位于第一屏端固定件3上。第二导滑机构D2与之同理，本申请实施例不再赘述。
需要说明的是，对于第一导滑机构D1的数量，本申请实施例同样不作限制。即第一导滑机构D1的数量可以是一个，也可以是多个，当第一导滑机构D1的数量为多个时，多个第一导滑机构D1相互并排设置，以提高第一屏端固定件3与固定座2间滑动连接的可靠性，第二导滑机构D2与之同理。
在一些实施例中，如图7、图8以及图11所示，第一导滑机构D1包括设置在固定座2上的第一导滑块24和设置在第一屏端固定件3上且沿第一方向X延伸的第一滑槽31，第一导滑块24可滑动地装设于第一滑槽31上。
第一滑槽31位于第一屏端固定件3上，示例性地，第一屏端固定件3包括第一滑槽部35，第一滑槽31设置于第一滑槽部35上，且第一滑槽部35与第一屏端固定件3中的其他结构可拆卸连接。第一导滑块24位于固定 座2上，可选地，第一导滑块24可以与固定座2的其他结构可拆卸连接。
第一滑槽31沿第一方向X延伸，第一导滑块24装设在第一滑槽31内，并能够在第一滑槽31内沿第一方向X相对滑动。第一屏端固定件3通过第一滑槽31与第一导滑块24的配合实现与固定座2在第一方向X上的相对移动。其中第一方向X与厚度方向Z相交，示例性地，第一方向X垂直于厚度方向Z，第一方向X为柔性显示装置的伸缩方向。
在一些实施例中，如图10所示，第二导滑机构D2包括设置在固定座2上沿第一方向X延伸的第二滑槽25和设置在第二屏端固定件4上的第二导滑块41，第二导滑块41可滑动地装设于第二滑槽25上。
第二滑槽25位于固定座2上且沿第一方向X延伸，第二导滑块41位于第二屏端固定件4上，第二导滑块41能够在第二滑槽25内沿第一方向X相对滑动。第二屏端固定件4通过第二滑槽25与第二导滑块41的配合实现与固定座2在第一方向X上的相对移动。
在一些实施例中，如图7、图8以及图10所示，固定座2包括导滑安装部28，第一导滑块24和第二滑槽25均设置于导滑安装部28上。
导滑安装部28是固定座2上用于设置第一导滑块24和第二滑槽25的部分，其中第二滑槽25可以通过对导滑安装部28挖除形成，而第一导滑块24可以通过螺栓连接等方式与导滑安装部28固定连接。示例性地，第一导滑块24与第二滑槽25在第二方向Y上并排设置。
在本申请实施例中，导滑安装部28同时实现第一导滑块24与第二滑槽25的安装设置，进一步地，第一导滑块24与第二滑槽25可以共用导滑安装部28中的部分结构用于实现安装。这种设计能够减少第一导滑机构D1和第二导滑机构D2对于柔性显示装置内部空间的占用，提高空间利用率。
在一些实施例中，固定座2还包括沿第二方向Y延伸的支撑梁26，第一方向X与第二方向Y相交，导滑安装部28连接于支撑梁26。
支撑梁26与导滑安装部28连接并保持位置固定，支撑梁26沿第二方向Y延伸，第一方向X与第二方向Y相交，示例性地，第一方向X、第二方向Y以及厚度方向Z两两垂直设置。
由于支撑梁26沿第二方向Y延伸，因此若导滑安装部28的数量为多个时，多个导滑安装部28会在第二方向Y上并排设置。示例性地，导滑安装部28的数量为两个，两个导滑安装部28设置在支撑梁26在第二方向Y上的两端。
本申请实施例通过设置支撑梁26，从而能够同时在固定座2上设置多个导滑安装部28，并能够实现多个导滑安装部28间相对位置的固定，以此能够提高固定座2与第一屏端固定件3之间以及固定座2与第二屏端固定件4之间的滑动连接可靠性。
在一些实施例中，如图4和图7所示，绕轴21和导滑安装部28在第一方向X上位于支撑梁26的两侧。
支撑梁26用于连接导滑安装部28，同时支撑梁26还将绕轴21与导滑安装部28间隔开，使得绕轴21与导滑安装部28在第一方向X上分设在支撑梁26的两侧。这种设计能够降低由于第一屏端固定件3以及第二屏端固定件4的移动对绕轴21转动的影响，提高柔性显示装置内部结构的可靠性。
在一些可选实施例中，固定座2还包括连接于支撑梁26的吊耳结构，吊耳结构位于支撑梁26背离导滑安装部28的一侧，吊耳结构上设置有沿第一方向X贯穿的通孔，绕轴21通过螺母以及轴承等结构转动连接于吊耳结构的通孔内。
在一些实施例中，固定座2还包括连接于导滑安装部28的弹性件安装部27，第一弹性件22和第二弹性件23中至少一者装设于弹性件安装部27，第一弹性件22的输出端连接于第一屏端固定件3，第二弹性件23的输出端连接于第二屏端固定件4。
弹性件安装部27连接于导滑安装部28，导滑安装部28连接于支撑梁26。对于支撑梁26与弹性件安装部27之间的相对位置关系，本申请实施例不作限制。示例性地，支撑梁26与弹性件安装部27在第一方向X上间隔设置。
弹性件安装部27用于安装第一弹性件22和第二弹性件23中的至少一者，可选地，第一弹性件22和第二弹性件23均固定于弹性件安装部27上。对于第一弹性件22或第二弹性件23与弹性件安装部27之间的连接关系， 本申请实施例不作限制。示例性地，第一弹性件22和第二弹性件23通过焊接或粘接的方式固定于弹性件安装部27。
第一弹性件22的输出端连接于第一屏端固定件3并能够随第一屏端固定件3同步运动，第一弹性件22通过输出端向第一屏端固定件3施加第一弹性力F1，第一弹性件22的输出端与第一屏端固定件3之间的连接方式包括但不限于粘接以及焊接等。
第二弹性件23的输出端连接于第二屏端固定件4并能够随第二屏端固定件4同步运动，第二弹性件23通过输出端向第二屏端固定件4施加第二弹性力F2，第二弹性件23的输出端与第二屏端固定件4之间的连接方式包括但不限于粘接以及焊接等。
在一些实施例中，请参阅图12，第一屏端固定件3包括第一本体32以及设置于第一本体32朝向第二屏端固定件4一侧的第一连接部33，第一弹性件22的输出端连接于第一连接部33。
第一本体32可以为板状结构，第一连接部33连接于第一本体32，同样地第一滑槽部35也可以连接于第一本体32，第一滑槽部35与第一连接部33在第一本体32上错位设置。第一连接部33用于实现第一屏端固定件3与第一弹性件22上输出端的连接固定，第一弹性件22通过第一连接部33向第一屏端固定件3施加第一弹性力F1。
在一些实施例中，如图9至图11所示，第二屏端固定件4包括第二本体42以及设置于第二本体42朝向第一屏端固定件3一侧的第二连接部43，第二弹性件23的输出端连接于第二连接部43。
与第一本体32相同的是，第二本体42也可以是板状结构，第二连接部43连接于第二本体42，同样地第二导滑块41也可以连接于第二本体42，第二连接部43与第二导滑块41在厚度方向Z上位于第二本体42的同一侧并相互错位设置。第二连接部43用于实现第二屏端固定件4与第二弹性件23上输出端的连接固定，第二弹性件23通过第二连接部43向第二屏端固定件4施加第二弹性力F2。
在一些实施例中，如图4至图6所示，柔性显示装置还包括展出部支撑件6，展出部支撑件6固定于固定座2，展出部支撑件6设置于第一本体 32部朝向第二屏端固定件4的一侧，展出部支撑件6上设置有避让槽61，第一连接部33被配置为能够在避让槽61内性对滑动。
展出部支撑件6固定于固定座2，展出部支撑件6与第一屏端固定件3能够相对滑动。在柔性显示装置由收缩状态转变为展开状态的过程中，第一屏端固定件3与固定座2之间会发生相对滑动，柔性显示屏1中的部分结构会位于固定座2的上方，并显示出特定的图像画面。但是由于固定座2并非整面结构，因此单依靠固定座2很难满足支撑柔性显示屏1的需要。
在这种情况下，本申请实施例增设了展出部支撑件6，展出部支撑件6与固定座2连接固定，即展出部支撑件6能够相对第一屏端固定件3相对滑动，并且展出部支撑件6能够代替固定座2对柔性显示屏1起到正面支撑的作用，从而在展开状态下，柔性显示屏1中用于实现显示效果的部分能够得到更好地支撑效果，提高柔性显示装置的可靠性以及使用寿命。
此外，由于展出部支撑件6与第一连接部33均位于第一本体32朝向第二屏端固定件4的一侧，并且第一屏端固定件3会相对展出部支撑件6相对移动。因此第一连接部33的移动容易与展出部支撑件6发生干涉影响。为了提高柔性显示装置伸缩可靠性，本申请实施例在展出部支撑件6上设置有避让槽61，避让槽61沿第一方向X延伸，第一连接部33的至少部分位于避让槽61内，并能够相对避让槽61滑动。这种设计可以在柔性显示装置伸缩过程中，避免第一屏端固定件3与展出部支撑件6之间的接触，提高可靠性。
在一些实施例中，如图5所示，柔性显示装置在收缩状态下，展出部支撑件6与第一屏端固定件3在厚度方向Z上至少部分交叠设置。
本申请实施例中提到的“展出部支撑件6与第一屏端固定件3在厚度方向Z上至少部分交叠设置”指的是：在收缩状态下，展出支撑件在沿厚度方向Z上的正投影与第一屏端固定件3在沿厚度方向Z上的正投影存在有交叠。
由于展出部支撑件6在收缩状态下能够与第一屏端固定件3在厚度方向Z上至少部分交叠设置，因此在收缩状态下，展出部支撑件6能够帮助第一屏端固定件3共同对柔性显示屏1中起到显示作用的部分起到支撑作 用，从而提高柔性显示装置在收缩状态下的使用可靠性。
同时，柔性显示装置在由收缩状态向展开状态转变的过程中，展出部支撑件6与第一屏端固定件3在沿厚度方向Z上的正投影的交叠区域的尺寸逐渐减小，展出部支撑件6超出第一屏端固定件3的部分同样对柔性显示屏1起到支撑作用。
需要说明的是，柔性显示装置在展开状态下，展出部支撑件6可以与第一屏端固定件3在厚度方向Z上至少部分交叠设置，也可以不与第一屏端固定件3在厚度方向Z上存在交叠区域，本申请实施例对此不作限制。
在一些实施例中，请参阅图5、图6以及图13，柔性显示装置还包括弯曲支撑件7，弯曲支撑件7在自身延伸方向上具有相对的第一端71和第二端72，第一端71固定于第一屏端固定件3，第二固定于第二屏端固定件4。
与展出部支撑件6相同的是，弯曲支撑件7同样用于支撑柔性显示屏1。但是不同的是，弯曲支撑件7会相对弯曲，并覆盖绕轴21的至少部分结构。具体地说，弯曲支撑件7具有第一端71和第二端72，第一端71可以通过焊接或粘接等方式固定于第一屏端固定件3，之后弯曲支撑件7由第一端71延伸至绕轴21位置处，然后覆盖绕轴21的至少部分结构并弯曲至柔性显示装置中靠近背光面的一侧，最终弯曲支撑件7的第二端72与第二屏端固定件4通过焊接或粘接等方式实现固定连接。
在柔性显示装置展开或部分展开的过程中，第一屏端固定件3会带动弯曲支撑件7的第一端71向远离绕轴21的方向移动，第二屏端固定件4会带动弯曲支撑件7的第二端72向靠近绕轴21的方向移动，位于固定座2靠近第一屏端固定件3一侧的弯曲支撑件7的尺寸逐渐增大，柔性显示装置的可显示画面尺寸增大。
本申请实施例通过设置弯曲支撑件7，从而能够实现对绕轴21位置处的柔性显示屏1起到支撑，提高柔性显示装置在伸缩过程时的可靠性。对于弯曲支撑件7的材质尺寸本申请实施例不作限制，弯曲支撑件7可以为柔性结构，从而能够发生弯曲变形；或者弯曲支撑件7也可以为可弯曲的刚性结构，从而能够提高对柔性显示屏1的支撑效果。
在一些实施例中，弯曲支撑件7中至少部分结构与展出部支撑件6接触。
由于弯曲支撑件7的第一端71连接于第一屏端固定件3，因此弯曲支撑件7中至少部分结构位于固定座2朝向第一屏端固定件3的一侧，且弯曲支撑件7中的至少部分结构会与展出部支撑件6在厚度方向Z上相对设置。
在此基础上，本申请实施例将弯曲支撑件7中部分结构与展出部支撑件6接触，柔性显示屏1能够在展出部支撑件6位置处同时得到弯曲支撑件7以及展出部支撑件6的支撑，从而实现双重支撑效果，提高柔性显示装置内部对于柔性显示屏1的支撑效果。
在一些实施例中，柔性显示屏1的一端固定于第一本体32的远离绕轴21的一端。
由于第一本体32本身为板状结构，并且柔性显示屏1的一端固定在第一本体32远离绕轴21的一端，因此第一屏端固定件3中第一本体32的大部分结构均能对柔性显示屏1起到支撑的作用，从而降低柔性显示屏1在外力作用下发生形变的风险。
在一些实施例中，柔性显示屏1的一端固定于第二本体42远离绕轴21的一端。
由于第二本体42本身为板状结构，并且柔性显示屏1的一端固定在第二本体42远离绕轴21的一端，因此第一屏端固定件3中第二本体42的大部分结构均能对柔性显示屏1起到支撑的作用，从而降低柔性显示屏1在外力作用下发生形变的风险。
在一些实施例中，展出部支撑件6设置于第一屏端固定件3靠近第二屏端固定件4的一侧，弯曲支撑件7包括柔性支撑部73以及设置于柔性支撑部73靠近展出部支撑件6一侧的刚性支撑部74，刚性支撑部74与展出部支撑件6接触。
弯曲支撑件7包括柔性支撑部73和刚性支撑部74，柔性支撑部73可以满足弯曲支撑件7的弯曲需要，刚性支撑部74可以提高弯曲支撑件7的支撑强度。两者相互配合从而满足柔性显示装置的使用需要。
本申请实施例在柔性支撑部73上设置有刚性支撑部74，并让刚性支撑部74设置在柔性支撑部73与展出部支撑件6之间的间隙空间内，柔性支撑部73能够得到刚性支撑部74的支撑，从而降低柔性支撑部73发生形变的风险，提高柔性显示装置的使用寿命。
同时刚性支撑部74还可以实现弯曲支撑件7和展出部支撑件6的相互接触，从而实现对柔性显示屏1的双重支撑效果，提高柔性显示装置的使用可靠性。
在一些实施例中，如图13所示，刚性支撑部74呈条状且数量为多个，多个刚性支撑部74在柔性支撑部73的延伸方向上间隔设置。
通常情况下，柔性支撑部73的弯曲能力较强，而刚性支撑部74的弯曲能力较弱，若将刚性支撑部74设置为单个板状结构，则弯曲支撑件7很难满足弯曲需要。
因此本申请实施例将刚性支撑部74设置为多个，并且多个刚性支撑部74在柔性支撑部73的延伸方向上间隔设置，这样使得柔性支撑部73中相对于相邻刚性支撑部74之间的区域可以发生弯曲，从而满足弯曲支撑件7的弯曲需要。示例性地，各刚性支撑部74均为沿第二方向Y延伸成型的条状结构，并且任意相邻两个刚性支撑部74之间的间隔尺寸保持一致。
本申请实施例通过将刚性支撑部74设置为多个且相互间隔设置，从而在满足弯曲支撑件7结构强度的通过时，还可以满足弯曲支撑件7的弯曲需要，具有较高的实用性以及可靠性。
在一些实施例中，柔性支持部包括第三区A3以及在弯曲支撑件7的延伸方向上位于第三区A3两侧的第一区A1和第二区A2，刚性支撑部74设置于第三区A3，第一端71设置与第一区A1，第二端72设置于第二区A2。
柔性支撑部73至少具有第一区A1、第二区A2以及第三区A3三个区域，第一端71位于第一区A1内，第一端71用于实现弯曲支撑件7以及第一屏端固定件3的连接固定；第二端72位于第二区A2内，第二端72用于实现弯曲支撑件7以及第二屏端固定件4的连接固定。第三区A3夹设于第一区A1与第二区A2之间，柔性支撑部73在第三区A3中的至少部分结构覆盖绕轴21设置。
在第一区A1和第二区A2内，柔性支撑部73可以直接与第一屏端固定件3和第二屏端固定件4接触固定，因此本申请实施例未在第一区A1和第二区A2内设置有刚性支撑部74。而在第三区A3内，由于柔性支撑部73与展出部支撑件6之间的间隙空间设置刚性支撑部74，展出部支撑件6可以通过刚性支撑部74向柔性支撑部73的第三区A3提供支撑，并且柔性显示屏1可以在第三区A3位置处可以得到展出部支撑件6以及刚性支撑部74的双重支撑效果。
在一些实施例中，请参阅图5、图6、图13和图14，第一屏端固定件3靠近弯曲支撑件7的一端具有第一凹台34，柔性支撑部73的第一端71设置于第一凹台34，且柔性支撑部73的厚度与第一凹台34的深度相同。
本申请实施例中提到的“柔性支撑部73的厚度”指的是：柔性支撑部73在厚度方向Z上的尺寸；“第一凹台34的深度”指的是：第一凹台34在厚度方向Z上的尺寸。
第一屏端固定件3上的第一凹台34用于容纳柔性支撑部73的第一端71，在此基础上，由于第一凹台34的深度与柔性支撑部73的厚度一致，因此柔性支撑部73的第一端71能够与第一凹台34完全适配，且第一屏端固定件3与柔性支撑部73连接位置处不会出现凸起或凹陷结构，即柔性支撑部73与第一屏端固定件3连接位置处能够形成一平整表面，从而能够更好地承载柔性显示屏1。
需要说明的是，与第一屏端固定件3相同的是，第二屏端固定件4上也可以设置有第二凹台，第二凹台用于容纳柔性支撑部73的第二端72，并确保柔性支撑部73与第二屏端固定件4连接位置处能够形成一平整表面，用于更好地承载柔性显示屏1。
在一些实施例中，请参阅图4和图15，柔性显示装置还包括动力提供结构8和应力平衡结构9中的至少一者。动力提供结构8和应力平衡结构9设置于第一屏端固定件3与固定座2之间或者第二屏端固定件4与固定座2之间或者固定座2与绕轴21之间；动力提供结构8被配置为提供固定座2与第一屏端固定件3相对移动的驱动力和固定座2与第一屏端固定件3相对固定时的锚定力(保持相对位置不变的力)，应力平衡结构9被配置为 能够提供固定座2相对第一屏端固定件3固定时的锚定力。
动力提供结构8是可以主动向固定座2或第一屏端固定件3提供动力的结构，而动力提供结构8的具体位置，本申请实施例不作限制。动力提供结构8可以位于第一屏端固定件3与所述固定座2之间，也可以位于第二屏端固定件4与固定座2之间，同样也可以位于固定座2与绕轴21之间，即只要动力提供结构8可以向固定座2或和第一屏端固定件3中的至少一者提供动力即可。
动力提供结构8可以实现柔性显示装置收缩或展开的自动化。同时当柔性显示装置处于收缩状态或展开状态时，动力提供结构8还可以提供一定的应力，以使固定座2和第一屏端固定件3能够保持相对固定。
应力平衡结构9能够在柔性显示装置伸缩过程中，向固定座2或第一屏端固定件3提供一定的阻力，以使其平稳移动的结构。同时当柔性显示装置处于收缩状态或展开状态时，应力平衡结构9还可以提供一定的应力，以使固定座2和第一屏端固定件3能够保持相对固定。
在一些实施例中，请参阅图16，动力提供结构8包括电机丝杠模组。示例性地，电机丝杠模组包括安装座81、驱动器82、传动件83以及螺纹块84，安装座81固定于第一屏端固定件3上，驱动器82、传动件83均设置于安装座81上。驱动器82可以为伺服电机或步进电机等设备，传动件83可以为螺纹杆，传动件83沿第一方向X延伸。传动件83的两端可以通过滚动轴承或滑动轴承转动连接于安装座81上，并且驱动器82可以驱动传动件转动。螺纹块84螺纹连接于传动件83并且与固定座2连接固定，当驱动器82驱动传动件83转动时，螺纹块84能够在第一方向X上发生移动，并带动第一屏端固定件3相对固定座2移动。示例性地，固定座2包括有连接臂29，螺纹块84与连接臂29固定连接，螺纹块84和传动件(丝杠)83的配合动作，可使得第一屏端固定件3与固定座2相对移动。需要说明的是，在柔性显示装置展开过程中，为了确保柔性显示装置匀速展开，需要控制动力提供结构8提供的动力F3与第一弹性力F1之和等于第二弹性力F2。此时若第一弹性力F1与第二弹性力F2之间的差距越小，则意味着动力提供结构8需要提供的动力F3越小，更容易实现动力提供结构8以 及柔性显示装置的轻薄化。
在一些实施例中，应力平衡结构9包括阻尼器。阻尼器可以起到缓冲外力的作用，当柔性显示装置在人力作用下发生状态改变时，阻尼器所产生的阻尼能够传递至固定座2以及第一屏端固定件3上，从而缓解外力等因素对柔性显示屏1所产生的瞬时冲击，防止柔性显示装置的伸缩速度过快，确保柔性显示屏1能够平稳伸缩。同时当柔性显示装置的状态保持固定时，阻尼器也可以提供一定的阻力，阻止柔性显示装置在不受外力的情况下出现伸缩，提高柔性显示装置的使用可靠性。
需要说明的是，与动力提供结构8相比，应力平衡结构9无法实现柔性显示装置的自动收缩或展开。因此当使用应力平衡结构9时需要人工拉动柔性显示装置，以实现柔性显示装置的伸缩。在这个过程中，第一弹性力F1和第二弹性力F2能够在一定程度上起到与应力平衡结构9相同的作用，从而确保柔性显示装置能够匀速稳定伸缩。
在一些实施例中，第一弹性件22和第二弹性件23为恒力弹簧，即第一弹性力F1的大小或第二弹性力F2的大小不随其对应输出端的移动而发生改变。
在相关技术中，柔性显示屏1在滑动过程中受到的拉伸作用力会随着拉伸量的增加而增加，这就导致柔性显示屏1会在展开状态受到较大的作用力，从而容易出现显示异常等问题。
而在本申请实施例中，由于第一弹性件22和第二弹性件23为恒力弹簧，因此柔性显示屏1的两端受到的应力不会随着柔性显示装置状态的改变而发生变化，这样便可以使柔性显示屏1在展开状态下受到的应力更加稳定，从而降低其出现显示异常的风险。可选地，第一弹性力F1和第二弹性力F2的大小均恒定。
在一些实施例中，第一弹性力F1和第二弹性力F2的比值为A，A满足：70％≤A≤130％。
第一弹性力F1和第二弹性力F2分别对柔性显示屏1的两端起到拉伸功能，为了确保柔性显示屏1两端受力尽可能平衡，本申请实施例将第一弹性力F1和第二弹性力F2的比值A设置在70％-130％之间。示例性地， A为70％、85％、100％、110％、130％中的一者。
并且由前述内容可知，在柔性显示装置展开和缩回过程中，在柔性显示装置大致匀速展开和缩回时，需要控制动力提供结构8提供的动力F3与第一弹性力F1之和稍大于或稍小于第二弹性力F2。此时若第一弹性力F1与第二弹性力F2之间的差距越小，则意味着动力提供结构8需要提供的动力F3越小，从而更容易实现动力提供结构8的小型化进而实现柔性显示装置的轻薄化。
相似地，不使用动力提供结构8，而仅采用应力平衡结构(阻尼器)时，在柔性显示装置展开和缩回过程中，在柔性显示装置大致匀速展开和缩回时，需要用户提供的作用力与第一弹性力F1之和稍大于或稍小于第二弹性力F2。此时若第一弹性力F1与第二弹性力F2之间的差距越小，则意味着用户需要提供的作用力越小，从而操作更轻便；同时，在展开、缩回及部分展开后的静止状态，需要应力平衡结构(阻尼器)提供的平衡力越小，从而更容易实现应力平衡结构(阻尼器)的小型化，进而实现柔性显示装置的轻薄化。
可选地，第一弹性力F1和第二弹性力F2的大小相等，这样可以进一步降低动力提供结构8和/或应力平衡结构(阻尼器)的尺寸，更好地实现柔性显示装置的轻薄化。
本申请实施例通过限制第一弹性力F1和第二弹性力F2的比值A的大小，使得柔性显示屏1两端所受应力相对稳定一致，从而在柔性显示装置伸缩过程中，也能够提高柔性显示装置的伸缩流畅度。
在一些实施例中，如图4所示，第一弹性件22的数量为两个，两个第一弹性件22并排设置。
由前述内容可知，第一弹性件22的输出端连接于第一屏端固定件3，第一弹性件22通过第一屏端固定件3向柔性显示屏1提供第一弹性力F1。第一弹性力F1的存在能够减少柔性显示装置由伸缩状态转变为展开状态过程中所需的应力大小，进一步地，以在一定程度上减小动力提供结构8或应力平衡结构9的数量或尺寸，从而使得柔性显示装置内部可以设置更多其他部件，以及减小柔性显示装置的整体尺寸。
此外，在一些实施例中，第二弹性件23的数量为两个，两个第二弹性件23并排设置。两个第一弹性件22与两个第二弹性件23对应设置，两个第一弹性件22和两个第二弹性件23能够同时对柔性显示屏1的两端起到拉伸作用，从而降低柔性显示屏1出现显示异常的问题。可选地，两个第二弹性件23位于两个第一弹性件22之间。
在一些实施例中，两个第一弹性件22或两个第二弹性件23相对于柔性显示装置的中央位置对称设置。
本申请实施例提到的“中央位置”具体是指：柔性显示装置中在第二方向上正中间位置处的结构。这种设计使得第一弹性件22或第二弹性件23对柔性显示屏1产生的拉伸力更均衡，可有效避免柔性显示屏1各部位受力不均导致出现显示异常。
虽然已经参考优选实施例对本申请进行了描述，但在不脱离本申请的范围的情况下，可以对其进行各种改进并且可以用等效物替换其中的部件，尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本申请并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。

Claims (20)

  1. 一种柔性显示装置，包括：
    固定座；
    绕轴，设置于所述固定座上；
    第一屏端固定件，可滑动地装设于所述固定座上且滑动方向垂直于所述绕轴的轴向；
    第二屏端固定件，可滑动地装设于所述固定座上且滑动方向垂直于所述绕轴的轴向；
    柔性显示屏，绕过所述绕轴，所述柔性显示屏的一端固定于所述第一屏端固定件上，所述柔性显示屏的另一端固定于所述第二屏端固定件上；
    至少一个第一弹性件，装设于所述固定座与所述第一屏端固定件之间，并向所述第一屏端固定件提供第一弹性力；
    至少一个第二弹性件，装设于所述固定座与所述第二屏端固定件之间，并向所述第二屏端固定件提供第二弹性力；
    其中，所述第一弹性力能够至少部分平衡所述第二弹性力。
  2. 根据权利要求1所述的柔性显示装置，其特征在于，所述固定座与所述第一屏端固定件之间设置有第一导滑机构；所述固定座与所述第二屏端固定件之间设置有第二导滑机构。
  3. 根据权利要求2所述的柔性显示装置，其中，所述第一导滑机构包括设置在所述固定座上的第一导滑块和设置在所述第一屏端固定件上且沿第一方向延伸的第一滑槽，所述第一导滑块可滑动地装设于所述第一滑槽上。
  4. 根据权利要求3所述的柔性显示装置，其中，所述第二导滑机构包括设置在所述固定座上沿第一方向延伸的第二滑槽和设置在所述第二屏端固定件上的第二导滑块，所述第二导滑块可滑动地装设于所述第二滑槽上。
  5. 根据权利要求4所述的柔性显示装置，其中，所述固定座包括导滑安装部，所述第一导滑块和所述第二滑槽均设置于所述导滑安装部上。
  6. 根据权利要求4所述的柔性显示装置，其中，所述固定座还包括沿第二方向延伸的支撑梁，所述第一方向与所述第二方向相交，所述导滑安装部连接于所述支撑梁。
  7. 根据权利要求6所述的柔性显示装置，其中，所述绕轴和所述导滑安装部在所述第一方向上位于所述支撑梁的两侧，
    所述固定座还包括连接于所述导滑安装部的弹性件安装部，所述第一弹性件和所述第二弹性件中至少一者装设于所述弹性件安装部，所述第一弹性件的输出端连接于所述第一屏端固定件，所述第二弹性件的输出端连接于所述第二屏端固定件。
  8. 根据权利要求7所述的柔性显示装置，其中，所述第一屏端固定件包括第一本体以及设置于所述第一本体朝向所述第二屏端固定件一侧的第一连接部，所述第一弹性件的输出端连接于所述第一连接部，
  9. 根据权利要求8所述的柔性显示装置，其中，所述第二屏端固定件包括第二本体以及设置于所述第二本体朝向所述第一屏端固定件一侧的第二连接部，所述第二弹性件的输出端连接于所述第二连接部。
  10. 根据权利要求9所述的柔性显示装置，还包括展出部支撑件，所述展出部支撑件固定于所述固定座；
    所述展出部支撑件设置于所述第一本体朝向所述第二屏端固定件的一侧，所述展出部支撑件上设置有避让槽，所述第一连接部被配置为能够在所述避让槽内相对滑动。
  11. 根据权利要求10所述的柔性显示装置，其中，所述柔性显示装置具有收缩状态和展开状态，在所述收缩状态下，所述展出部支撑件与所述第一屏端固定件在所述柔性显示装置的厚度方向上至少部分交叠设置。
  12. 根据权利要求10所述的柔性显示装置，还包括弯曲支撑件，所述弯曲支撑件在自身延伸方向上具有相对的第一端和第二端，所述第一端固定于所述第一屏端固定件，所述第二端固定于所述第二屏端固定件。
  13. 根据权利要求12所述的柔性显示装置，其中，所述弯曲支撑件中至少部分结构与所述展出部支撑件接触。
  14. 根据权利要求12所述的柔性显示装置，其中，所述柔性显示屏的一端固定于所述第一本体的远离所述绕轴的一端，或者，所述柔性显示屏的一端固定于所述第二本体的远离所述绕轴的一端。
  15. 根据权利要求12所述的柔性显示装置，其中，所述柔性支撑部包括第三区以及在所述弯曲支撑件的延伸方向上位于所述第三区两侧的第一区和第二区，所述刚性支撑部设置于所述第三区，所述第一端设置于所述第一区，所述第二端设置于所述第二区。
  16. 根据权利要求15所述的柔性显示装置，其中，所述第一屏端固定件靠近所述弯曲支撑件的一端具有第一凹台，所述柔性支撑部设置于所述第一凹台，且所述柔性支撑部的厚度与所述第一凹台的深度相同。
  17. 根据权利要求1所述的柔性显示装置，还包括设置于所述第一屏端固定件与所述固定座之间的动力提供结构和应力平衡结构中的至少一者；所述动力提供结构和所述应力平衡结构设置于所述第一屏端固定件与所述固定座之间或者所述第二屏端固定件与所述固定座之间或者所述固定座与所述绕轴之间，所述动力提供结构被配置为提供所述固定座相对所述第一屏端固定件移动的驱动力和所述固定座相对所述第一屏端固定件固定时的锚定力；
    所述应力平衡结构被配置为能够提供所述固定座相对所述第一屏端固定件固定时的锚定力。
  18. 根据权利要求17所述的柔性显示装置，其中，所述动力提供结构包括电机丝杠模组，
    所述应力平衡结构包括阻尼器。
  19. 根据权利要求17所述的柔性显示装置，其中，所述第一弹性件和所述第二弹性件为恒力弹簧，
    所述第一弹性力和所述第二弹性力的比值为A，A满足：70％≤A≤130％。
  20. 根据权利要求1所述的柔性显示装置，其中，所述第一弹性件包括两个，两个所述第一弹性件并排设置，
    所述第二弹性件包括两个，两个所述第二弹性件并排设置，
    两个所述第二弹性件位于两个所述第一弹性件之间，
    两个所述第一弹性件或两个所述第二弹性件相对于所述柔性显示装置的中央位置对称设置。
PCT/CN2022/127847 2022-08-31 2022-10-27 柔性显示装置 WO2024045303A1 (zh)

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