WO2021227653A1 - 柔性屏支撑装置和柔性显示终端 - Google Patents

柔性屏支撑装置和柔性显示终端 Download PDF

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Publication number
WO2021227653A1
WO2021227653A1 PCT/CN2021/081737 CN2021081737W WO2021227653A1 WO 2021227653 A1 WO2021227653 A1 WO 2021227653A1 CN 2021081737 W CN2021081737 W CN 2021081737W WO 2021227653 A1 WO2021227653 A1 WO 2021227653A1
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WO
WIPO (PCT)
Prior art keywords
housing
rotating assembly
support device
flexible
screen support
Prior art date
Application number
PCT/CN2021/081737
Other languages
English (en)
French (fr)
Inventor
后红琪
廖富
朱召吉
丁立薇
孙康龙
吴雨华
Original Assignee
昆山国显光电有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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 WO2021227653A1 publication Critical patent/WO2021227653A1/zh
Priority to US17/746,578 priority Critical patent/US11809233B2/en

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Classifications

    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G06F1/1652—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being flexible, e.g. mimicking a sheet of paper, or rollable
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1615—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function
    • G06F1/1616—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
    • G06F1/1618—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position the display being foldable up to the back of the other housing with a single degree of freedom, e.g. by 360° rotation over the axis defined by the rear edge of the base enclosure
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1615—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function
    • G06F1/1624—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function with sliding enclosures, e.g. sliding keyboard or display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1675—Miscellaneous details related to the relative movement between the different enclosures or enclosure parts
    • G06F1/1681—Details related solely to hinges

Definitions

  • the invention relates to the technical field of flexible display, in particular to a flexible screen support device and a flexible display terminal.
  • the embodiments of the present invention are dedicated to providing a flexible screen support device and a flexible display terminal, so as to solve the problem that the flexible screen support device in the prior art may squeeze or stretch the flexible display screen due to bending.
  • the flexible display shows the problem of failure.
  • the first aspect of the present invention provides a flexible screen support device, comprising: a first shell and a second shell respectively connected to the rotating assembly; and a fixing piece located on the first and second shells away from the rotating assembly One side; wherein the first shell and/or the second shell rotate around the rotating assembly to drive the fixed piece to bend or flatten; in the flat state, the horizontal length of the fixed piece perpendicular to the side of the rotating shaft is equal to the bending The length of the curved surface of the side in the state.
  • a second aspect of the present invention provides a flexible display terminal, including: the flexible screen support device provided by any of the above embodiments; the flexible display screen, which is fixed on the fixed sheet on the side away from the rotating assembly; and is electrically connected to the flexible display screen.
  • Central control circuit board
  • the flexible screen support device by arranging a fixing piece in the bending area between the first housing and the second housing, the horizontal length of the fixing piece perpendicular to the side of the rotating shaft in the flat state is equal to The curved length of the side surface of the fixed piece perpendicular to the rotation axis in the bent state, that is, the fixed piece will not expand or contract during the bending process. In this case, the flexible screen supporting device will not squeeze or stretch the flexible screen that is subsequently stacked on the fixed sheet.
  • FIG. 1 is a schematic diagram of an exploded structure of a flexible screen support device provided by an embodiment of the application.
  • FIG. 2 is a schematic diagram of the length change of the rotating component during the state switching process of the flexible screen support device shown in FIG. 1.
  • FIG. 3 is a partial exploded view of the flexible screen support device shown in FIG. 1 provided by an embodiment of the application.
  • FIG. 4a is a schematic cross-sectional view of a flexible display terminal provided by the first embodiment of the application.
  • FIG. 4b shows a schematic cross-sectional view of a flexible display terminal provided by the second embodiment of the application.
  • the embodiment of the present application provides a flexible screen support device, which is used to carry the flexible display screen and drive the flexible display screen to bend and flatten.
  • the flexible screen supporting device is provided with a fixing sheet at a position corresponding to the bending area of the flexible display screen, and the flexible display screen is stacked on the fixing sheet.
  • the fixed sheet refers to an element that can be bent without stretching or shrinking after being stressed, that is to say, the fixed sheet is equivalent to the bending neutral layer, that is, the fixed sheet is not Will expand and contract due to bending stress. In this case, it can be ensured that the flexible screen support device will not cause squeezing or stretching of the flexible screen.
  • FIG. 1 is a schematic diagram of an exploded structure of a flexible screen support device provided by an embodiment of the application.
  • the flexible screen support device 10 can be used to support the flexible display screen and drive the flexible display screen to fold and unfold.
  • the flexible screen support device 10 includes a first housing 12 and a second housing 13 connected to the rotating assembly 11, respectively.
  • the flexible screen support device 10 further includes a fixing sheet 14 located on the side of the first housing 12 and the second housing 13 away from the rotating assembly 11.
  • the first housing 12 and/or the second housing 13 rotate around the rotating assembly 11 to drive the fixing piece 14 to bend or flatten.
  • the horizontal length of the side surface of the fixed piece 14 perpendicular to the rotation axis is equal to the curved surface length of the side surface in the bent state.
  • the first housing 12 and the second housing 13 respectively include a first side and a second side that are oppositely disposed, and the rotating assembly 11 is connected to the first side of the first housing 12 and the first side of the second housing 13 respectively.
  • the fixing piece 14 is located on the second side of the first housing 12 and the second housing 13.
  • the fixed piece 14 includes a side surface perpendicular to the rotation axis.
  • the side surface is a plane, and the length of the side surface in the direction perpendicular to the rotation axis is the first length; in the bent state, the fixed piece 14
  • the side surface is a curved surface.
  • the curve length of the side surface is the second length, and the second length is equal to the first length.
  • a gap is formed between the first housing 12 and the second housing 13, and the fixing piece 14 is fixed between the first housing 12 and the second housing 13. And cover the gap.
  • the fixing piece 14 is located between the first housing 12 and the second housing 13 and is connected to the first housing 12 and the second housing 13 respectively.
  • the fixed piece 14 and the rotating assembly 11 are stacked.
  • the rotating assembly 11 includes a first end 111 and a second end 112 that are symmetrical about the rotation axis, the first end 111 is elastically connected to the first housing 12, and the second end 112 is elastically connected to the second housing 13.
  • the two opposite sides of the fixing piece 14 are respectively fixedly connected to the first housing 12 and the second housing 13, and are stacked above the rotating assembly 11.
  • the first housing 12 and the second housing 13 can respectively drive the two sides of the fixing plate 14 to Move closer to each other, so as to realize the bending of the fixing piece 14; or, the first housing 12 and the second housing 13 can respectively drive the two sides of the fixing piece 14 to move away from each other, so as to realize the bending of the fixing piece 14 Flatten.
  • FIG. 2 is a schematic diagram of the length change of the rotating component during the state switching process of the flexible screen support device shown in FIG. 1. 1 and 2, when the flexible screen support device 10 is in a flat state, the line length of the rotating assembly 11 is D 0 , and the line length refers to the length in the direction perpendicular to the axis of rotation, the same below.
  • the first shell 12 drives one side of the fixed sheet 14 to move clockwise
  • the second shell 13 drives the other side of the fixed sheet 14 to move counterclockwise, so that the fixed sheet 14 is bent upward, which is equivalent to a flexible screen. ⁇ fold.
  • the fixing piece 14 is bent to the maximum extent, and the line length of the rotating assembly 11 at this time is D 1 .
  • the first housing 12 and the second housing 13 when the user applies a force on the first housing 12 and the second housing 13 to push the first housing 12 and the second housing 13 to rotate downward about the rotating assembly 11, the first housing The body 12 and the second housing 13 respectively move in a direction close to the rotating assembly 11.
  • the first housing 12 drives one side of the fixing piece 14 to move counterclockwise
  • the second housing 13 drives the other side of the fixing piece 14 to move clockwise, so that the fixing piece 14 is flattened.
  • the wire length of the rotating assembly 11 returns to D 0 .
  • the first housing 12 and the second housing 13 move away from the rotating assembly 11 respectively.
  • the first housing 12 drives one side of the fixing piece 14 to move clockwise
  • the second housing 13 drives the other side of the fixing piece 14 to move counterclockwise, so that the fixing piece 14 is flattened.
  • the wire length of the rotating assembly 11 returns to D 0 .
  • the first housing 12 and/or the second housing 13 can also be connected by telescopic parts, such as telescopic rods, and other distance adjusting parts, as long as the first housing 12 and the second housing 13 rotate around the rotating assembly 11 It suffices that the distance between the first housing 12 and/or the second housing 13 relative to the rotating assembly 11 can be changed.
  • telescopic parts such as telescopic rods, and other distance adjusting parts
  • the fixing piece by arranging a fixing piece in the bending area between the first housing and the second housing, the fixing piece will not expand or contract during the bending process, that is to say, the fixing The sheet is equivalent to the bent neutral layer of the flexible screen support device.
  • the flexible screen supporting device will not squeeze or stretch the flexible screen that is subsequently stacked on the fixed sheet.
  • the fixing sheet 14 includes a steel sheet.
  • the shape of the fixing piece 14 can be set reasonably according to actual requirements.
  • the fixing piece 14 is plate-shaped.
  • the first screen support surface A, the second screen support surface B, and the third screen support surface C are coplanar.
  • the whole of the first screen support surface A, the second screen support surface B and the third screen support surface C forms the support surface of the flexible display screen, and the support surface is always in a continuous connection state, that is, the first One side edge of the screen supporting surface A is in contact with one side edge of the third screen supporting surface C, the other side edge of the third screen supporting surface C is in contact with one side edge of the second screen supporting surface B, and then
  • the flexible display screen can be directly bonded on the supporting surface. Using a flat and complete surface to support the flexible display can ensure that the flexible display has a good display effect.
  • the rotating assembly 11 has a 360-degree rotation angle, that is, taking the rotation axis as the axis of symmetry, the two ends of the rotating assembly 11 can be folded in two opposite directions. For example, the two ends of the rotating assembly 11 can be folded upward and downward respectively.
  • the integral support surface formed by the first screen support surface A, the second screen support surface B, and the third screen support surface C is equivalent to the bent neutral layer of the flexible screen support device 10, so When the rotating assembly 11 is in any state within a 360-degree rotation angle range, the flexible display screen stacked on the supporting surface will not be squeezed or stretched by the flexible screen supporting device 10.
  • the rotating assembly includes a chain shaft.
  • the specific realization form of the chain shaft can be realized by using existing technology, such as a watch chain structure.
  • the chain shaft can achieve 360 rotations and always provide support for the bending area of the flexible display screen during the bending process, reducing the risk of damage to the flexible display screen and improving reliability.
  • the rotating assembly includes a first end and a second end that are symmetrical about the axis of rotation; the first housing and the second housing are connected to the first end and the second end through an elastic member, respectively; the first end and the second end The two ends are respectively provided with a limiting member corresponding to the elastic member, and the limiting member is used to limit the expansion and contraction direction of the elastic member as a straight line.
  • the rotating assembly 11 includes a first end 111 and a second end 112 that are symmetrical to the axis of rotation, and the first housing 12 and the second housing 13 slide with the first end 111 and the second end 112, respectively. connect.
  • the flexible screen support device 10 also includes an elastic member located between the first end 111 and the first housing 12, and between the second end 112 and the second housing 13. Rotation axis.
  • FIG. 3 is a partial exploded view of the flexible screen support device shown in FIG. 1 provided by an embodiment of the application. 1 and 3, the first end 111 and the second end 112 of the rotating assembly 11 are respectively provided with a first slide rail 1111 and a second slide rail 1121.
  • the first housing 12 includes a first slider 1112 slidably fitted with the first end 111
  • the second housing 13 includes a second slider 1122 slidably fitted with the second end 112.
  • the elastic member includes a first spring 1113 connected between the first sliding block 1112 and the first end 111 respectively, and a second spring 1123 connected between the second sliding block 1122 and the second end 112 respectively.
  • the first sliding rail 1111 includes a first base and a first protrusion provided on the first base.
  • the first sliding block 1112 includes a second base and a first groove provided on the second base, and the first groove is slidingly fitted with the first protrusion.
  • a first spring 1113 is respectively provided on both sides of the first protrusion, and two ends of the first spring 1113 are respectively connected to the first sliding block 1112 and the first end 111 of the rotating assembly 11.
  • the second sliding rail 1121 includes a third base and a second protrusion arranged on the third base.
  • the second sliding block 1122 includes a fourth base and a second groove provided on the fourth base, and the second groove is slidingly fitted with the second protrusion.
  • a second spring 1123 is respectively provided on both sides of the second protrusion, and two ends of the second spring 1123 are respectively connected to the second sliding block 1122 and the second end 112 of the rotating assembly 11.
  • first slide rail 1111 and the second slide rail 1121 may also be provided on the first housing 12 and the second housing 13, correspondingly, the first slider 1112 and the second slider 1122 is respectively provided at the first end 111 and the second end 112 of the rotating assembly 11.
  • the flexible screen support device 10 it is possible to ensure that the first spring 1113 and the second spring 1123 extend and contract in a direction parallel to the first housing 11 and the second housing 12, respectively, so as to ensure that the first housing 11 and the The movement of the second housing 12 is synchronized to avoid distortion of the display surface of the flexible display screen.
  • the flexible screen support device 10 further includes a cover plate 15 fixedly connected to the first housing 11 and the second housing 12, respectively, and the cover plate is located at the position of the rotating assembly 11 away from the fixed sheet 14.
  • the cover plate includes an elastic area, and the orthographic projection of the rotating assembly 11 on the cover plate falls into the elastic area.
  • the cover plate includes a central area and a first edge area and a second edge area slidably connected to opposite sides of the central area, and the orthographic projection of the rotating assembly 11 on the cover plate falls into the central area.
  • the cover plate, the first housing 12, the second housing 13, and the fixing sheet 14 together form the outer casing of the flexible screen support device 10, thereby providing protection for the inner rotating assembly 11.
  • the embodiment of the present application also provides a flexible display terminal, including: the flexible screen support device 10 provided in any of the above embodiments; the flexible display screen, which is fixed on the fixed sheet 14 on the side away from the rotating assembly; and the flexible display screen Electrically connected central control circuit board.
  • the central control circuit board is used to control the flexible display screen to realize the display function.
  • the rotating assembly 11 includes a chain-type rotating shaft, and the chain-type rotating shaft includes a plurality of synchronous rotating shafts, and the radius of the synchronous rotating shaft depends on the thickness of the flexible display screen and the radius of inward bending.
  • FIG. 4a shows a schematic cross-sectional view of the flexible display terminal provided by the first embodiment of the application.
  • FIG. 4b shows a schematic cross-sectional view of a flexible display terminal provided by the second embodiment of the application.
  • the number of synchronous shafts included in the chain shaft can be an odd number or an even number.
  • the inner bend radius of the display screen; d indicates the thickness of the flexible display screen.

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  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
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Abstract

一种柔性屏支撑装置和柔性显示终端，该柔性屏支撑装置包括：分别与旋转组件连接的第一壳体和第二壳体；以及固定片，位于第一壳体和第二壳体远离旋转组件的一侧；其中，第一壳体和/或第二壳体绕旋转组件旋转以带动固定片弯折或展平；在展平状态下固定片垂直于旋转轴的侧面的水平长度等于在弯折状态下该侧面的曲面长度。

Description

柔性屏支撑装置和柔性显示终端 技术领域
本发明涉及柔性显示技术领域，具体涉及一种柔性屏支撑装置和柔性显示终端。
背景技术
随着柔性显示技术的发展，柔性显示屏逐渐被应用于各种显示终端，这类具有柔性显示屏的显示终端简称为柔性显示终端。现有技术中，为了确保柔性显示终端可以呈现折叠和展平两种状态，通常需要在柔性显示屏的下表面固设柔性屏支撑装置。这种情况下，当柔性显示终端被折叠时，柔性屏支撑装置会对柔性显示屏造成挤压或拉伸，从而导致柔性显示屏显示失效。
发明内容
有鉴于此，本发明实施例致力于提供一种柔性屏支撑装置和柔性显示终端，以解决现有技术中的柔性屏支撑装置因弯折而对柔性显示屏造成挤压或拉伸，进而导致柔性显示屏显示失效的问题。
本发明第一方面提供了一种柔性屏支撑装置，包括：分别与旋转组件连接的第一壳体和第二壳体；以及固定片，位于第一壳体和第二壳体远离旋转组件的一侧；其中，第一壳体和/或第二壳体绕旋转组件旋转以带动固定片弯折或展平；在展平状态下固定片垂直于旋转轴的侧面的水平长度等于在弯折状态下该侧面的曲面长度。
本发明第二方面提供了一种柔性显示终端，包括：上述任一实施例提供的柔性屏支撑装置；柔性显示屏，固定在固定片上远离旋转组件的一侧；以及与柔性显示屏电连接的中控电路板。
根据本实施例提供的柔性屏支撑装置，通过在第一壳体和第二壳体之间的 弯折区域设置固定片，在展平状态下固定片垂直于旋转轴的侧面的水平长度等于在弯折状态下固定片与旋转轴垂直的侧面的曲面长度，即固定片在弯折过程中不会产生伸缩。这种情况下，柔性屏支撑装置便不会对后续叠置在固定片上的柔性显示屏造成挤压或拉伸。
附图说明
图1为本申请一实施例提供的柔性屏支撑装置的分解结构示意图。
图2为图1所示柔性屏支撑装置的状态切换过程中旋转组件的长度变化示意图。
图3所示为本申请一实施例提供的图1所示柔性屏支撑装置的局部爆炸图。
图4a所示为本申请第一实施例提供的柔性显示终端的截面示意图。
图4b所示为本申请第二实施例提供的柔性显示终端的截面示意图。
具体实施方式
为使本申请的目的、技术手段和优点更加清楚明白，以下结合附图对本申请作进一步详细说明。
本申请实施例提供了一种柔性屏支撑装置，该柔性屏支撑装置用于承载柔性显示屏，并带动柔性显示屏弯折和展平。柔性屏支撑装置对应柔性显示屏的弯折区域的位置设置有固定片，柔性显示屏叠置在固定片上。固定片是指受力后可弯折但不会有拉伸或收缩的元件，也就是说，固定片相当于弯折中性层，即在柔性屏支撑装置弯折的过程中，固定片不会因弯折应力而产生伸缩。这种情况下，可以确保柔性屏支撑装置不会对柔性显示屏造成挤压或拉伸。
下面结合具体实施例对本申请提供的柔性屏支撑装置的结构进行详细说明。
图1为本申请一实施例提供的柔性屏支撑装置的分解结构示意图。该柔性屏支撑装置10可以用于支撑柔性显示屏，并带动柔性显示屏折叠和展平。如 图1所示，柔性屏支撑装置10包括分别与旋转组件11连接的第一壳体12和第二壳体13。柔性屏支撑装置10还包括固定片14，固定片14位于第一壳体12和第二壳体13远离旋转组件11的一侧。第一壳体12和/或第二壳体13绕旋转组件11旋转以带动固定片14弯折或展平。在展平状态下固定片14垂直于旋转轴的侧面的水平长度等于在弯折状态下该侧面的曲面长度。
第一壳体12和第二壳体13分别包括相对设置的第一侧和第二侧，旋转组件11分别与第一壳体12的第一侧和第二壳体13的第一侧连接。固定片14位于第一壳体12和第二壳体13的第二侧。展平状态下，固定片14包括垂直于旋转轴的侧面，此时该侧面为平面，该侧面在垂直于旋转轴的方向上的长度为第一长度；在弯折状态下，固定片14的该侧面为曲面，此时该侧面的曲线长度为第二长度，第二长度等于第一长度，即弯折前后，固定片14的该侧面的长度没有产生伸缩。
在一个实施例中，在远离旋转组件11的一侧，第一壳体12和第二壳体13之间形成间隙，固定片14固定于第一壳体12和第二壳体13之间，且覆盖该间隙。也就是说，固定片14位于第一壳体12和第二壳体13之间，并分别与第一壳体12和第二壳体13连接。固定片14和旋转组件11叠置。
具体而言，旋转组件11包括关于旋转轴对称的第一端111和第二端112，第一端111与第一壳体12弹性连接，第二端112与第二壳体13弹性连接。所述固定片14的相对两侧分别与第一壳体12和第二壳体13固连，且叠置在旋转组件11的上方。基于固定片14的可弯折特性，当第一壳体12和第二壳体13绕旋转组件11旋转时，第一壳体12和第二壳体13可以分别带动固定片14的两侧向彼此靠近的方向移动，从而实现固定片14的弯折；或者，第一壳体12和第二壳体13可以分别带动固定片14的两侧向相互远离的方向移动，从而实现固定片14的展平。
图2为图1所示柔性屏支撑装置的状态切换过程中旋转组件的长度变化示意图。结合图1和图2所示，当柔性屏支撑装置10处于展平状态时，旋转组件11的线长为D 0，线长是指在垂直于旋转轴线的方向上的长度，下同。
当用户分别在第一壳体12和第二壳体13上施加作用力，以推动第一壳体12和第二壳体13绕旋转组件11向与旋转轴线平行的方向且向上旋转时，由于固定片14相当于弯折中性层，不会因弯折产生伸缩。位于弯折中性层的远离弯折方向上的旋转组件11受到拉伸应力，该拉伸应力驱动第一壳体12和第二壳体13分别向远离旋转组件11的两侧移动。与此同时，第一壳体12带动固定片14的一侧顺时针移动，第二壳体13带动固定片14的另一侧逆时针移动，从而使固定片14向上弯折，相当于柔性屏的内折。当第一壳体12和第二壳体13正对时，固定片14呈最大弯曲程度，此时旋转组件11的线长为D 1。
这种情况下，当用户分别在第一壳体12和第二壳体13上施加作用力，以推动第一壳体12和第二壳体13绕旋转组件11向下旋转时，第一壳体12和第二壳体13分别向靠近旋转组件11的方向移动。第一壳体12带动固定片14的一侧逆时针移动，第二壳体13带动固定片14的另一侧顺时针移动，从而使固定片14展平。此时，旋转组件11的线长恢复到D 0。
这种情况下，当用户继续在第一壳体12和第二壳体13上施加作用力，以推动第一壳体12和第二壳体13绕旋转组件11向下旋转时，由于固定片14相当于弯折中性层，不会因弯折产生伸缩。旋转组件11受到压缩应力，该压缩应力驱动第一壳体12和第二壳体13分别向靠近旋转组件11的方向移动。与此同时，第一壳体12带动固定片14的一侧逆时针移动，第二壳体13带动固定片14的另一侧顺时针移动，从而使固定片14向下弯折，即柔性屏的外折。当第一壳体12和第二壳体13正对时，固定片14呈最大弯曲程度，此时旋转组件11的线长为D 2。
这种情况下，当用户分别在第一壳体12和第二壳体13上施加作用力，以推动第一壳体12和第二壳体13绕旋转组件11向上旋转时，第一壳体12和第二壳体13分别向远离旋转组件11的方向移动。第一壳体12带动固定片14的一侧顺时针移动，第二壳体13带动固定片14的另一侧逆时针移动，从而使固定片14展平。此时，旋转组件11的线长恢复到D 0。
第一壳体12和/第二壳体13还可以通过伸缩件，例如伸缩杆，等其他距 离调整件连接，只要在第一壳体12和第二壳体13绕旋转组件11旋转的过程中，能够实现第一壳体12和/或第二壳体13相对于旋转组件11的距离变化即可。
根据本实施例提供的柔性屏支撑装置，通过在第一壳体和第二壳体之间的弯折区域设置固定片，由于固定片在弯折过程中不会产生伸缩，也就是说，固定片相当于柔性屏支撑装置的弯折中性层。这种情况下，柔性屏支撑装置便不会对后续叠置在固定片上的柔性显示屏造成挤压或拉伸。
在一个实施例中，固定片14包括钢片。固定片14的形状可以根据实际需求合理设置，例如，在本实施例中，固定片14为板状。
在一个实施例中，如图1所示，当固定片14展平时，第一屏体支撑表面A、第二屏体支撑表面B和第三屏体支撑表面C共平面。
这种情况下，第一屏体支撑表面A、第二屏体支撑表面B和第三屏体支撑表面C的整体形成柔性显示屏的支撑表面，该支撑表面始终处于接续连接状态，即第一屏体支撑表面A的一侧边缘和第三屏体支撑表面C的一侧边缘接触，第三屏体支撑表面C的另一侧边缘和第二屏体支撑表面B的一侧边缘接触，后续柔性显示屏可以直接粘结在该支撑表面之上。利用平坦的完整表面支撑柔性显示屏，可以确保柔性显示屏具有良好的显示效果。
在一个实施例中，如图1所示，旋转组件11具有360度旋转角度，即以旋转轴线为对称轴，旋转组件11的两端可以向相对的两个方向对折。例如旋转组件11的两端可以分别向上对折和向下对折。这种情况下，第一屏体支撑表面A、第二屏体支撑表面B和第三屏体支撑表面C的整体形成的支撑表面相当于柔性屏支撑装置10的弯折中性层，因此在旋转组件11处于360度旋转角度范围内的任意状态下，叠置在支撑表面上的柔性显示屏都不会受到柔性屏支撑装置10的挤压或拉伸。
在一个实施例中，如图1所示，旋转组件包括链式转轴。链式转轴的具体实现形式可以采用现有技术实现，例如手表链结构。链式转轴可以实现360旋转，并且在弯折过程中始终为柔性显示屏的弯折区域提供支撑，降低柔性显示 屏被损坏的风险，提高可靠性。
在一个实施例中，旋转组件包括关于旋转轴对称的第一端和第二端；第一壳体和第二壳体分别通过弹性件与第一端和第二端连接；第一端和第二端分别设置有与弹性件对应的限位件，限位件用于将弹性件的伸缩方向限定为直线。
例如，如图1所示，旋转组件11包括与旋转轴对称的第一端111和第二端112，第一壳体12和第二壳体13分别与第一端111和第二端112滑动连接。柔性屏支撑装置10还包括位于第一端111和第一壳体12之间，以及位于第二端112和第二壳体13之间的弹性件，弹性件的伸缩方向垂直于旋转组件11的旋转轴。
具体而言，如图3所示为本申请一实施例提供的图1所示柔性屏支撑装置的局部爆炸图。结合图1和图3所示，旋转组件11的第一端111和第二端112分别设置有第一滑轨1111和第二滑轨1121。第一壳体12包括与第一端111滑动配合的第一滑块1112，第二壳体13包括与第二端112滑动配合的第二滑块1122。弹性件包括分别连接第一滑块1112与第一端111之间的第一弹簧1113，以及分别连接第二滑块1122和第二端112之间的第二弹簧1123。
例如，如图3所示，第一滑轨1111包括第一底座和设置在第一底座上的第一凸起。第一滑块1112包括第二底座和设置在第二底座上的第一凹槽，第一凹槽与第一凸起滑动配合。第一凸起的两侧分别设置一个第一弹簧1113，第一弹簧1113的两端分别连接第一滑块1112和旋转组件11的第一端111。第二滑轨1121包括第三底座和设置在第三底座上的第二凸起。第二滑块1122包括第四底座和设置在第四底座上的第二凹槽，第二凹槽与第二凸起滑动配合。第二凸起的两侧分别设置一个第二弹簧1123，第二弹簧1123的两端分别连接第二滑块1122和旋转组件11的第二端112。
在其他实施例中，也可以将第一滑轨1111和第二滑轨1121分别设置在第一壳体12和第二壳体13上，相应地，将第一滑块1112和第二滑块1122分别设置在旋转组件11的第一端111和第二端112。
根据本实施例提供的柔性屏支撑装置10，可以确保第一弹簧1113和第二 弹簧1123分别沿与第一壳体11和第二壳体12平行的方向伸缩，以确保第一壳体11和第二壳体12运动同步，避免柔性显示屏的显示面出现扭曲。
在一个实施例中，如图3所示，柔性屏支撑装置10还包括分别与第一壳体11和第二壳体12固连的盖板15，盖板位于旋转组件11远离固定片14的一侧。在本实施例中，盖板包括弹性区域，旋转组件11在盖板上的的正投影落入弹性区域。或者，盖板包括中央区域和分别与中央区域的相对两侧滑动连接的第一边缘区域和第二边缘区域，旋转组件11在盖板上的正投影落入中央区域。
盖板与第一壳体12、第二壳体13、固定片14共同组成柔性屏支撑装置10的外部机壳，从而为内部的旋转组件11提供保护。
本申请实施例还提供了一种柔性显示终端，包括：上述任一实施例提供的柔性屏支撑装置10；柔性显示屏，固定在固定片14上远离旋转组件的一侧；以及与柔性显示屏电连接的中控电路板。中控电路板用于控制柔性显示屏以实现显示功能。
在一个实施例中，旋转组件11包括链式转轴，链式转轴包括多个同步转轴，同步转轴的半径取决于柔性显示屏的厚度和内弯半径。
具体而言，图4a所示为本申请第一实施例提供的柔性显示终端的截面示意图。图4b所示为本申请第二实施例提供的柔性显示终端的截面示意图。结合图4a和图4b可以看出，链式转轴中所包含的同步转轴的数量可以是奇数也可以是偶数。当链式转轴中包含的同步转轴的数量n确定时，每一个同步转轴的半径r＝(R+d)/[arcsin(180°/2(n-1)-1]；其中，R指示柔性显示屏的内弯半径；d指示柔性显示屏的厚度。
例如，参阅图4a，当同步转轴的数量为5时，每一个同步转轴的半径r＝(R+d)/[arcsin(180°/2(n-1)-1]＝(R+d)/[arcsin22.5°-1]。
又例如，参阅图4b，当同步转轴的数量为6时，每一个同步转轴的半径r＝(R+d)/[arcsin(180°/2(n-1)-1]＝(R+d)/[arcsin18°-1]。
以上所述仅为本申请的较佳实施例而已，并不用以限制本申请，凡在本申 请的精神和原则之内，所作的任何修改、等同替换等，均应包含在本申请的保护范围之内。

Claims (13)

  1. 一种柔性屏支撑装置，其中，包括：
    分别与旋转组件连接的第一壳体和第二壳体；以及
    固定片，位于所述第一壳体和所述第二壳体远离所述旋转组件的一侧；
    所述第一壳体和/或所述第二壳体绕所述旋转组件旋转以带动所述固定片弯折或展平，在所述展平状态下所述固定片垂直于旋转轴的侧面的水平长度等于在所述弯折状态下所述侧面的曲面长度。
  2. 根据权利要求1所述的柔性屏支撑装置，其中，所述第一壳体和所述第二壳体之间形成间距，所述固定片固定于所述第一壳体和所述第二壳体之间，且覆盖所述间距。
  3. 根据权利要求2所述的柔性屏支撑装置，其中，所述第一壳体包括第一屏体支撑表面；所述第二壳体包括第二屏体支撑表面；所述固定片包括第三屏体支撑表面；当所述固定片展平时，所述第一屏体支撑表面、所述第二屏体支撑表面和所述第三屏体支撑表面共平面。
  4. 根据权利要求1-3中任一项所述的柔性屏支撑装置，其中，所述旋转组件具有360度旋转角度。
  5. 根据权利要求1-3中任一项所述的柔性屏支撑装置，其中，所述旋转组件包括链式转轴，所述链式转轴可以实现360旋转。
  6. 根据权利要求1-3中任一项所述的柔性屏支撑装置，其中，所述旋转组件包括关于旋转轴对称的第一端和第二端；所述第一壳体和所述第二壳体分别通过弹性件与所述第一端和所述第二端连接；所述第一端和所述第二端分别设置有与所述弹性件对应的限位件，所述限位件用于将所述弹性件的伸缩方向限定为直线。
  7. 根据权利要求1-3中任一项所述的柔性屏支撑装置，其中，所述旋转组件包括与所述旋转轴对称的第一端和第二端；所述第一壳体和所述第二壳体分别与所述第一端和所述第二端滑动连接；
    还包括分别位于所述第一端和所述第一壳体之间，以及所述第二端和所述第二壳体之间的至少两个弹性件；所述弹性件的伸缩方向垂直于所述旋转组件的旋转轴。
  8. 根据权利要求7所述的柔性屏支撑装置，其中，所述第一端和所述第二端分别设置有第一滑轨和第二滑轨；所述第一壳体包括与所述第一端滑动配合的第一滑块，所述第二壳体包括与所述第二端滑动配合的第二滑块；所述弹性件包括分别连接所述第一滑块与所述第一端之间的第一弹簧，分别连接所述第二滑块和所述第二端之间的第二弹簧。
  9. 根据权利要求1-3中任一项所述的柔性屏支撑装置，其中，还包括分别与所述第一壳体和所述第二壳体固定连接的盖板，所述盖板位于所述旋转组件远离所述固定片的一侧；
    所述盖板包括弹性区域，所述旋转组件在所述盖板上的正投影落入所述弹性区域。
  10. 根据权利要求1-3中任一项所述的柔性屏支撑装置，其中，还包括分别与所述第一壳体和所述第二壳体固定连接的盖板，所述盖板位于所述旋转组件远离所述固定片的一侧；
    所述盖板包括中央区域和分别与所述中央区域的相对两侧滑动连接的第一边缘区域和第二边缘区域，所述旋转组件在所述盖板上的正投影落入所述中央区域。
  11. 根据权利要求1-3中任一所述的柔性屏支撑装置，其中，所述固定片包括钢片。
  12. 一种柔性显示终端，其中，包括：
    权利要求1-11中任一所述的柔性屏支撑装置；
    柔性显示屏，固定在所述第一壳体和所述第二壳体上，且位于所述固定片远离所述旋转组件的一侧；以及
    与所述柔性显示屏电连接的中控电路板。
  13. 根据权利要求12所述的柔性显示终端，其中，所述旋转组件包括链 式转轴，所述链式转轴包括多个同步转轴，所述同步转轴的半径取决于所述柔性显示屏的厚度和内弯半径。
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