WO2020228314A1 - 柔性显示装置 - Google Patents
柔性显示装置 Download PDFInfo
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- WO2020228314A1 WO2020228314A1 PCT/CN2019/124835 CN2019124835W WO2020228314A1 WO 2020228314 A1 WO2020228314 A1 WO 2020228314A1 CN 2019124835 W CN2019124835 W CN 2019124835W WO 2020228314 A1 WO2020228314 A1 WO 2020228314A1
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- flexible display
- fixed
- display screen
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- movable control
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- This application relates to the technical field of flexible display devices, and in particular to a flexible display device.
- an embodiment of the present application provides a flexible display device to solve the problem of a single bending direction of a flexible display screen in a flexible display terminal.
- the embodiment of the present application provides a flexible display device, including: a casing; a flexible display screen, the flexible display screen includes a fixed part, the fixed part is fixed on the casing; a driving mechanism connected to the non-fixed end of the flexible display screen, The non-fixed end for driving the flexible display screen is bent relative to the fixed part.
- the fixed part of the flexible display screen is fixed on the casing, and the non-fixed end is bent relative to the fixed part under the action of external force.
- the flexible display screen exhibits an S-shaped bend under the action of external force, thereby realizing simultaneous internal and external bending, and can realize bending in different directions.
- FIG. 1 is a schematic side view of a flexible display device provided in an embodiment of the application in a non-bending display state.
- FIG. 2 is a schematic diagram showing a first bending display state of the flexible display device shown in FIG. 1.
- FIG. 3 is a schematic diagram showing a second bending display state of the flexible display device shown in FIG. 1.
- FIG. 1 is a schematic side view of a flexible display device provided in an embodiment of the application in a non-bending display state.
- the use state of the flexible display device includes a bending display state and a non-bending display state.
- the bending display state means that the flexible display screen 20 in the flexible display device is in a bending state.
- the non-bending display state is opposite to the bending display state. That is, the flexible display screen 20 is in a flat display state.
- the flexible display device includes a casing 10, a flexible display screen 20, and a driving mechanism 30.
- the flexible display screen 20 includes a fixing portion that is fixed on the casing 10. The fixed end is connected to drive the non-fixed end of the flexible display screen 20 to bend relative to the fixed part.
- the bending here includes a forward bending towards the display surface of the flexible display screen 20 and a reverse bending towards the display surface.
- the top end of the flexible display screen 20 is fixed on the casing 10 as a fixed part, and the bottom end of the flexible display screen 20 is connected to the drive mechanism 30 as a non-fixed end.
- the drive mechanism 30 is used to drive the bottom end of the flexible display screen 20 relative to The top end is bent forward or backward.
- a certain position in the middle of the flexible display screen 20, such as the central axis position is used as a fixed part, and the fixed part is fixed on the casing 10.
- the top and bottom ends of the flexible display screen 20 are both non-fixed ends and are connected to the driving mechanism respectively.
- the driving mechanism 30 is connected, the driving mechanism 30 is used to drive the top and bottom ends of the flexible display screen 20 to bend in a positive or reverse direction relative to the position of the central axis.
- the bending directions of the top and bottom ends of the flexible display screen 20 are the same or different.
- the top and bottom ends of the flexible display screen 20 move synchronously or asynchronously under the drive of the driving mechanism.
- the top and bottom ends of the flexible display screen 20 are fixed on the same driving mechanism, or fixed on different driving mechanisms respectively.
- the top end of the flexible display screen 20 is suspended and fixed on the casing 10 as a fixed part, and the bottom end of the flexible display screen 20 is fixedly connected to the driving mechanism 30 as a non-fixed end. It is used to drive the bottom end of the flexible display screen 20 to move left and right in the horizontal direction.
- the driving mechanism 30 may be an electric driving mechanism or a manual driving mechanism, which is used to generate thrust and tension on the flexible display screen 20.
- it should be a horizontal thrust and a pull force to make the flexible display screen 20
- the bottom end moves left and right, and the application does not limit the specific implementation form of the driving mechanism 30.
- the display surface of the flexible display screen 20 when the flexible display device is in a non-bending display state, due to gravity, the display surface of the flexible display screen 20 is in a vertical state.
- FIG. 2 is a schematic diagram of the first bending display state of the flexible display device shown in FIG.
- the surface of the flexible display screen 20 appears concave and convex, that is, bending inside and outside at the same time, the display surface is S-shaped.
- the bottom end of the flexible display screen 20 receives a leftward pulling force, as shown in FIG.
- FIG. 3 is a schematic diagram of the second bending display state of the flexible display device shown in FIG. 1.
- the flexible The surface of the display screen 20 appears concave and convex, that is, both inside and outside are bent, the display surface is S-shaped, and the S-shaped display surface under the pulling force is mirror-symmetrical with the S-shaped display surface under the pushing force. It can be seen that, according to the flexible display device provided in this embodiment, the flexible display screen 20 can be bent inside and outside at the same time, and can be bent multiple times, and the bending process does not affect the display state of the flexible display screen 20.
- the driving mechanism 30 adopts a manual driving mechanism, which specifically includes a link mechanism 31 and a movable control handle 32 hinged to the link mechanism 31.
- the movable control handle 32 is used to drive the connection under the action of external force.
- the lever mechanism 31 drives the non-fixed end of the flexible display screen 20 to bend relative to the fixed part.
- the driving mechanism 30 drives the non-fixed end of the flexible display screen 20 to bend relative to the fixed portion, specifically by using the external force acting on the movable control handle 32 to drive the linkage mechanism 31 to move, and then using the linkage mechanism 31
- the non-fixed end of the flexible display screen 20 is driven to move and cooperates with the fixed part, so as to realize the bending of the flexible display screen 20.
- the linkage mechanism 31 includes a four-bar linkage mechanism, a five-bar linkage mechanism, a six-bar linkage mechanism, a seven-bar linkage mechanism, etc.
- the present application does not limit the number and specific structure of the linkage mechanism 31, as long as it can produce horizontal The thrust and pulling force can be.
- manual drive mechanism can save cost.
- the use of a manual drive mechanism in which the linkage mechanism and the movable control handle cooperate with each other can further simplify the mechanical structure and facilitate industrial realization.
- the casing 10 includes a base 11, a side wall 12 fixed on the base 11, and a top casing 13 fixed on the side wall 12.
- the top end of the flexible display screen 20 is suspended and fixed on the top casing 13.
- the lower surface
- the side wall 12 is fixed on the edge area of the upper surface of the base 11, and cooperates with the top shell 13 and the base 11 to form a first cavity with side openings, and the bottom surface of the top shell 13 is close to the side surface.
- the position of the opening includes a groove, and the top end of the flexible display screen 20 is embedded in the groove and fixed by screws, so that the flexible display screen 20 is suspended and fixed on the lower surface of the top shell 13.
- the display surface of the flexible display screen 20 corresponds to the position of the side opening of the first cavity, that is, the flexible display screen 20 covers part or all of the side opening of the first cavity, which can be a driving force formed in the first cavity.
- the mechanism 30 provides protection without directly exposing the driving mechanism 30 to the outer surface visible to the human eye.
- the linkage mechanism 31 adopts a seven linkage mechanism. Specifically, it includes a fixed crossbar 311, a first rocker 312, a second rocker 313, and a quadrilateral link unit 314 in the vertical direction.
- the quadrilateral link unit 314 in the vertical direction refers to a planar link unit formed by sequentially hingedly connecting four links, and the quadrilateral link unit 314 is in a vertical plane.
- the quadrilateral link unit 314 includes an upper link, a right link, a lower link, and a left link that are sequentially hinged, and every two adjacent links form a top corner.
- the quadrilateral link unit 314 includes two first top corners and a second top corner, and two first bottom corners and a second bottom corner located below.
- the first top corner, the second top corner, the first bottom corner, and the second bottom corner correspond to the left top corner, the right top corner, the left bottom corner, and the right bottom corner in sequence.
- the right link not only includes a side link section A used to form the right side of the quadrilateral link unit 314, but also includes an extension section B used to form one side of the supplementary corner of the right bottom corner.
- the quadrilateral link unit 314 cooperates with the fixed cross bar 311, the first rocker 312, and the second rocker 313 to form a link mechanism.
- one or both ends of the fixed cross bar 311 are fixed on the side wall 12 of the casing 10 to form a fixing member of the linkage mechanism 31.
- the first end of the fixed cross bar 311 is fixed to the flexible display screen.
- the second end of the fixed cross bar 311 is a free end, that is, the fixed cross bar 311 is perpendicular to the fixed portion of the flexible display screen 20.
- the top end of the first rocker 312 and the top end of the second rocker 313 are respectively hinged with the fixed crossbar 311, the bottom end of the first rocker 312 is hinged with the left bottom corner of the quadrilateral link unit 314, and the bottom of the second rocker 313 is hinged.
- the end is hinged with the extension of the vertical rod forming the right bottom corner of the quadrilateral link unit 314, for example, the bottom end of the second rocker 313 is hinged with the extension B of the right link forming the quadrilateral link unit 314.
- the movable control handle 32 includes a fulcrum O, the movable control handle 32 is hinged with the fixed crossbar 311 at the fulcrum O, and the bottom end of the movable control handle 32 is hinged with the right bottom corner of the quadrilateral link unit 314. In this way, the external force acting on the movable control handle 32 can drive the link mechanism 31 to move left and right.
- the distance between the fulcrum O of the movable control handle 32 and the bottom end of the movable control handle 32 is equal to the length of the first rocker 312. Since the first rocker 312 and the movable control handle 32 are hinged to the fixed crossbar 311, on this basis, the distance between the fulcrum O of the movable control handle 32 and the bottom end of the movable control handle 32 is equal to that of the first rocker The length of 312 can ensure that the first rocker 312 and the movable control handle 32 move synchronously.
- the length of the first rocker 312 is less than the length of the second rocker 313, and the quadrilateral link unit 314 is a parallelogram link unit, namely the upper link, the right link, and the lower link.
- the rod and the left link are sequentially hinged to form a parallelogram.
- the upper link and the lower link move synchronously, the right link and the left link move synchronously, so as to ensure that the link mechanism 31 is always level when moving left and right under the drive of the movable control handle 32, that is, the link
- the pushing and pulling force applied by the mechanism 31 to the flexible display screen 20 is always level. Since the flexible display screen 20 is suspended at the top, the flexible display screen 20 should be in a vertical state under the action of gravity. In this case, the pushing and pulling forces applied to the flexible display screen 20 by the linkage mechanism 31 are always horizontal. Therefore, damage due to extrusion and stretching during the bending process of the flexible display screen 20 can be avoided.
- the flexible display screen 20 when the movable control handle 32 is in its own balance state, that is, without external force, the flexible display screen 20 is in a vertical suspension state, that is, a non-bending display state.
- the right link becomes a rocker with the right bottom corner vertex Q as the fulcrum, which drives the upper link to move to the left, thereby generating a leftward pull and driving a flexible display
- the screen 20 moves to the left. It can be seen that the movement process of the linkage mechanism 31 is just the opposite of the movement process shown in FIG. 2, and the bending display state of the flexible display screen 20 is mirror-symmetrical to the bending display state shown in FIG. 2.
- the top shell 13 of the casing 10 further includes a second cavity, the second cavity includes a through hole, and the movable control handle passes through the through hole to limit the displacement of the movable control handle.
- the through holes respectively form upper openings 132 and lower openings 133 on the upper and lower walls of the second cavity.
- the movable control handle 32 passes through the through holes, which is equivalent to the opening from the bottom of the movable control handle 32.
- 133 passes through, passes through the second cavity, and passes through the upper opening 132 so that the top end of the movable control handle 32 passes through the upper surface of the top shell 13.
- the upper opening 132 and the lower opening 133 form a limit device for the movable control handle 32 in four directions, front, rear, left, and right, so as to avoid excessive swinging of the movable control handle 32 from causing damage to the flexible display screen 20.
- the use of the through hole on the top shell 13 as the limiting device of the movable control handle 32 is only an example, and it can also be located on the fixed cross bar 311 on the left and right sides of the fulcrum O of the movable control handle 32 during specific applications.
- Two protrusions are provided to limit the movable control handle 32, and the specific structure and position of the limit device of the movable control handle 32 are not limited in this application.
- the circuit board of the flexible display screen 20 is arranged in the second cavity on the top case 13. Since the top of the flexible display screen 20 and the top shell 13 are relatively fixed, this is equivalent to the relative fixing of the circuit board and the flexible display screen 20, which can prevent the circuit board and the flexible display screen 20 from being bent during the bending process. The wiring is broken.
- the top shell 13 further includes an elastic telescopic member 131, such as a spring, a telescopic pad, etc., located in the second cavity.
- the elastic telescopic member 131 telescopes along the swing direction of the movable control handle 32, and is elastic
- the first end of the telescopic member 131 is fixedly connected or abutted with the inner wall of the second cavity, and the second end of the elastic telescopic member 131 is fixedly connected or abutted with the movable control handle 32.
- an elastic telescopic member 131 such as a spring, a telescopic pad, etc.
- the elastic telescopic member 131 includes a spring and a telescopic pad located on both sides of the movable control handle 32, the left end of the spring is fixedly connected with the inner wall of the second cavity, and the right end of the spring is fixedly connected with the movable control handle 32 , The left end of the telescopic pad is fixedly connected with the movable control handle 32, and the right end of the telescopic pad is fixedly connected with the inner wall of the second cavity.
- the flexible display device further includes a screen support rod.
- the screen support rod is fixed along the bottom edge of the flexible display screen 20 for flattening the bottom edge of the flexible display screen 20 and has a quadrilateral shape.
- the right end of the upper link in the link unit 314 is fixedly connected to the center of the screen support rod, for example, screwed.
- the flexible display device further includes a telescopic elastic rod 40, which is fixedly connected to an upper connecting rod forming a quadrilateral connecting rod unit, such as the one fixed in the quadrilateral connecting rod unit 314 Between the right end of the upper link and the screen support rod, it is used to extend when the drive mechanism 30 drives the non-fixed end of the flexible display screen 20 to bend with respect to the fixed part, and the drive mechanism 30 drives the flexible display screen 20 The non-fixed end is compressed when it is bent in the opposite direction relative to the fixed part.
- the telescopic elastic rod 40 may be a pneumatic spring push rod, for example.
- the telescopic elastic rod 40 may be a pneumatic spring push rod, for example.
- the telescopic spring rod 40 extends when the drive mechanism 30 pushes the non-fixed end to move to the right. In the embodiment shown in FIG. 3, it compresses when the drive mechanism 30 pulls the non-fixed end to move to the left. .
- the bending degree of the flexible display screen 20 can be set according to the actual situation, and the adaptability of the product can be improved.
- the driving mechanism 30 is an electric driving mechanism.
- the motor and the screw are used to cooperate with each other, and the rotation of the motor is converted into linear motion by the screw.
- the screw is fixed to the end of the flexible display screen 20, so that the motor is used to drive the screw to move left and right in a direction perpendicular to the display surface, thereby driving the flexible display screen 20 to move back and forth.
- the specific structure of the motor can be a DC motor, an asynchronous motor, a synchronous motor, etc., which is not limited in this application.
- the purpose of the embodiments of the present application is to provide a structure for realizing bending of the flexible display screen, and does not limit the display process of the flexible display screen.
- the qualifiers "first”, “second”, “third” and “fourth” used in the description of the embodiments of this application, as well as up, down, left and right, are only used to explain the technical solutions more clearly , And cannot be used to limit the scope of protection of this application.
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Abstract
一种柔性显示装置，包括：机壳；柔性显示屏，柔性显示屏包括固定部，固定部固定在机壳上；驱动机构，与柔性显示屏的非固定端连接，用于驱动柔性显示屏的非固定端相对固定部弯折。该柔性显示装置可以实现不同方向的弯折。
Description
本申请涉及柔性显示设备技术领域，具体涉及一种柔性显示装置。
在未来的显示终端中，柔性折叠屏的应用是一个重要的发展方向。然而，目前具有柔性折叠屏的显示终端大多是基于一个固定的折痕位置上的固定的折叠方向来实现显示屏的折叠，这种单一的折叠方向极大地限制了柔性折叠屏的应用范围。
发明内容
有鉴于此，本申请实施例提供一种柔性显示装置，以解决柔性显示终端中的柔性显示屏弯折方向单一的问题。
本申请实施例提供了一种柔性显示装置，包括：机壳；柔性显示屏，柔性显示屏包括固定部，固定部固定在机壳上；驱动机构，与柔性显示屏的非固定端连接，用于驱动柔性显示屏的非固定端相对固定部弯折。
根据本申请实施例提供的柔性显示装置，其中的柔性显示屏固定部固定在机壳上，非固定端在外力作用下相对于固定部弯折，这种结构设置与柔性显示屏的自身属性(包括重力、柔性和刚性)相配合，使得柔性显示屏在外力作用下呈现S型弯折，从而实现了同时内外弯折、且可实现不同方向上的弯折。
图1所示为本申请一实施例提供的柔性显示装置非弯折显示状态的侧面示意图。
图2所示为图1所示柔性显示装置的第一弯折显示状态示意图。
图3所示为图1所示柔性显示装置的第二弯折显示状态示意图。
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。
图1所示为本申请一实施例提供的柔性显示装置非弯折显示状态的侧面示意图。该柔性显示装置的使用状态包括弯折显示状态和非弯折显示状态，弯折显示状态即柔性显示装置中的柔性显示屏20处于弯折状态，非弯折显示状态与弯折显示状态相反，即柔性显示屏20处于平面显示状态。如图1所示，该柔性显示装置包括机壳10、柔性显示屏20和驱动机构30，柔性显示屏20包括固定部，固定部固定在机壳10上，驱动机构30与柔性显示屏的非固定端连接，用于驱动柔性显示屏20的非固定端相对固定部弯折，这里的弯折包括朝向柔性显示屏20的显示面的正向弯折和背向显示面的反向弯折。
例如柔性显示屏20的顶端作为固定部固定在机壳10上，柔性显示屏20的底端作为非固定端与驱动机构30连接，则驱动机构30用于驱动柔性显示屏20的底端相对于顶端做正向弯折或反向弯折。又例如，柔性显示屏20的中部某一位置，例如中轴线位置作为固定部，固定部固定在机壳10上，柔性显示屏20的顶端和底端均作为非固定端，并分别与驱动机构30连接，则驱动机构30用于驱动柔性显示屏20的顶端和底端相对于中轴线位置做正向弯折或反向弯折。柔性显示屏20的顶端和底端的弯折方向相同或不同。柔性显示屏20的顶端和底端在驱动机构的带动下同步或异步移动。柔性显示屏20的顶端和底端固定在同一个驱动机构上，或分别固定在不同的驱动机构上。
在本实施例中，如图1所示，柔性显示屏20的顶端作为固定部悬挂固定在机壳10上，柔性显示屏20的底端作为非固定端与驱动机构30固定连接，驱动机构30用于带动柔性显示屏20的底端在水平方向上左右移动。
驱动机构30可以是电动驱动机构，也可以是手动驱动机构，用于对柔性 显示屏20产生推力和拉力，例如在本实施例中应为水平方向上的推力和拉力，以使柔性显示屏20的底端左右移动，本申请对驱动机构30的具体实现形式不作限定。
根据本实施例提供的柔性显示装置，如图1所示，当柔性显示装置处于非弯折显示状态时，由于重力作用，柔性显示屏20的显示面呈竖直状态。这种情况下，当柔性显示屏20的底端受到一个向右的推力时，如图2所示为图1所示柔性显示装置的第一弯折显示状态示意图，在柔性显示屏20自身的刚性和柔性的相互作用下，柔性显示屏20的表面出现凹凸起伏，即同时实现内外弯折，显示面呈S型。当柔性显示屏20的底端受到一个向左的拉力时，如图3所示为图1所示柔性显示装置的第二弯折显示状态示意图，基于与上述推力的作用过程相同的原理，柔性显示屏20的表面出现凹凸起伏，即同时实现内外弯折，显示面呈S型，该拉力作用下的S型显示面与推力作用下的S型显示面呈镜像对称。由此可见，根据本实施例提供的柔性显示装置，可以同时实现柔性显示屏20的内外弯折，并且可以实现多次弯折，弯折过程不影响柔性显示屏20的显示状态。
在一个实施例中，参阅图2，驱动机构30采用手动驱动机构，具体包括连杆机构31和与连杆机构31铰接的活动控制手柄32，活动控制手柄32用于在外力的作用下带动连杆机构31驱动柔性显示屏20的非固定端相对固定部弯折。也就是说，驱动机构30带动柔性显示屏20的非固定端相对于固定部弯折，具体是利用作用在活动控制手柄32上的外部作用力带动连杆机构31移动，进而利用连杆机构31带动柔性显示屏20的非固定端移动，与固定部相互配合，从而实现柔性显示屏20的弯折。
该连杆机构31包括四连杆机构、五连杆机构、六连杆机构、七连杆机构等等，本申请对连杆机构31的数量和具体结构形式不作限定，只要能够产生水平方向上的推力和拉力即可。
手动驱动机构相比于电动驱动机构而言，可以节省成本。采用连杆机构和活动控制手柄相互配合的手动驱动机构，可以进一步简化机械结构，易于 工业实现。
在一个实施例中，参阅图1，机壳10包括底座11、固定在底座11上的侧壁12和固定在侧壁12上的顶壳13，柔性显示屏20的顶端悬挂固定在顶壳13的下表面。例如，在本实施例中，侧壁12固定在底座11的上表面边缘区域，并与顶壳13和底座11相互配合形成一个具有侧面开口的第一空腔，顶壳13的下表面靠近侧面开口的位置包括凹槽，柔性显示屏20的顶端嵌入凹槽内，并通过螺丝固定，从而使柔性显示屏20悬挂固定在顶壳13的下表面。柔性显示屏20的显示面与第一空腔的侧面开口位置相对应，即柔性显示屏20遮挡第一空腔的侧面开口的部分或全部，这样可以为后续形成于第一空腔内的驱动机构30提供保护，而不至于使驱动机构30直接暴露于人眼可见的外表面。
在本实施例中，参阅图2，连杆机构31采用七连杆机构。具体包括固定横杆311、第一摇杆312、第二摇杆313和竖直方向上的四边形连杆单元314。竖直方向上的四边形连杆单元314是指由四个连杆顺次铰接形成的平面连杆单元，并且该四边形连杆单元314处于竖直平面内。例如，如图2所示，四边形连杆单元314包括依次铰接的上连杆、右连杆、下连杆和左连杆，每相邻的两个连杆组成一个顶角。四边形连杆单元314包括两个位于上方的第一顶角和第二顶角，以及两个位于下方的第一底角和第二底角。具体而言，第一顶角、第二顶角、第一底角和第二底角依次对应左顶角、右顶角、左底角和右底角。其中，右连杆除了包括用于形成四边形连杆单元314的右边的边杆段A之外，还包括用于形成右底角的补角的一边的延长段B。
四边形连杆单元314与固定横杆311、第一摇杆312、第二摇杆313相互配合形成连杆机构。如图2所示，固定横杆311的一端或两端固定在机壳10的侧壁12上以形成连杆机构31的固定件，例如固定横杆311的第一端固定在与柔性显示屏20的显示面平行的侧壁12上，固定横杆311的第二端为自由端，即固定横杆311与柔性显示屏20的固定部垂直。第一摇杆312的顶端和第二摇杆313的顶端分别与固定横杆311铰接，第一摇杆312的底端和四边形连杆单元314的左底角铰接，第二摇杆313的底端和形成四边形连杆单元314 的右底角的竖杆的延长段铰接，例如第二摇杆313的底端和形成四边形连杆单元314的右连杆的延长段B铰接。
进一步地，活动控制手柄32包括支点O，活动控制手柄32在支点O处与固定横杆311铰接，活动控制手柄32的底端和四边形连杆单元314的右底角铰接。这样，便可以通过作用在活动控制手柄32上的外部作用力带动连杆机构31左右移动。
在一个实施例中，活动控制手柄32的支点O和活动控制手柄32的底端之间的间距等于第一摇杆312的长度。由于第一摇杆312和活动控制手柄32均与固定横杆311铰接，在此基础上，通过设置活动控制手柄32的支点O和活动控制手柄32的底端之间的间距等于第一摇杆312的长度，可以确保第一摇杆312和活动控制手柄32同步运动。
这种情况下，在一个实施例中，第一摇杆312的长度小于第二摇杆313的长度，四边形连杆单元314为平行四边形连杆单元，即上连杆、右连杆、下连杆和左连杆顺次铰接形成一个平行四边形。这样，上连杆和下连杆同步运动，右连杆和左连杆同步运动，从而确保连杆机构31在活动控制手柄32的带动下左右移动的过程中始终保持水平，也就是说连杆机构31施加给柔性显示屏20的推拉作用力始终保持水平。而由于柔性显示屏20处于顶端悬挂的状态，在重力作用下柔性显示屏20应当为竖直状态，在这种情况下，连杆机构31施加给柔性显示屏20的推力和拉力始终保持水平，从而可以避免柔性显示屏20弯折过程中由于挤压和拉伸造成损伤。
下面结合图1、图2和图3详细说明，采用连杆机构31和活动控制手柄32作为驱动机构30的柔性显示装置，由非弯折显示状态到弯折显示状态的切换过程。
首先参阅图1，当活动控制手柄32处于自身平衡状态，即不受外力作用时，柔性显示屏20处于竖直悬挂状态，即非弯折显示状态。
接着参阅图2，当对活动控制手柄32施加水平向左的推力时，活动控制手柄32的底端和第一摇杆312的底端同步带动四变形连杆单元314中的下连 杆向右移动，由于第二摇杆313长度大于第一摇杆312，因此第二摇杆313的摆动角速度小于第一摇杆312的摆动角速度，从而使得第二摇杆313在四变形连杆单元314中的右连杆的底端产生一个向左的拉力，这样，右连杆成为一个以右底角顶点Q为支点的摇杆，带动上连杆向右移动，产生向右的推力，进而带动柔性显示屏20的底端向右移动。这种情况下，在柔性显示屏20自身属性(包括重力、刚性、柔性)的作用下，柔性显示屏20将呈现如图2所示的S型。
然后参阅图3，当对活动控制手柄32施加水平向右的推力时，活动控制手柄32的底端和第一摇杆312的底端同步带动四边形连杆单元314中的下连杆向左移动，由于第二摇杆313的长度大于第一摇杆312，因此第二摇杆313的摆动角速度小于第一摇杆312的摆动角速度，从而使得第二摇杆313在四边形连杆单元314中的右连杆的底端产生一个向右的推力，这样，右连杆成为一个以右底角顶点Q为支点的摇杆，带动上连杆向左移动，从而产生向左的拉力，带动柔性显示屏20向左移动。可见，该连杆机构31的运动过程刚好和图2所示运动过程相反，柔性显示屏20的弯折显示状态和图2所示弯折显示状态镜像对称。
在一个实施例中，参阅图1，机壳10的顶壳13还包括第二腔体，第二腔体包括通孔，活动控制手柄穿过通孔以限制活动控制手柄的位移。例如，如图1所示，通孔在第二腔体的上壁和下壁分别形成上开口132和下开口133，活动控制手柄32穿过通孔相当于活动控制手柄32的顶端从下开口133穿过，经过第二腔体，并从上开口132穿出，以使活动控制手柄32的顶端穿出顶壳13的上表面。上开口132和下开口133形成活动控制手柄32在前、后、左、右四个方向上的限位装置，避免活动控制手柄32的摆动幅度过大造成柔性显示屏20的损伤。
这里给出的利用顶壳13上的通孔作为活动控制手柄32的限位装置只是示例性的，具体应用过程中还可以在固定横杆311上位于活动控制手柄32的支点O的左右两侧设置两个凸起，以对活动控制手柄32进行限位，本申请对活 动控制手柄32的限位装置的具体结构和位置不作限定。
这种情况下，柔性显示屏20的电路板设置在顶壳13上的第二空腔内。由于柔性显示屏20的顶端和顶壳13是相对固定的，这样相当于电路板和柔性显示屏20相对固定，可以避免在柔性显示屏弯折过程中，造成电路板和柔性显示屏20之间的接线断裂。
在一个实施例中，如图1所示，顶壳13还包括位于第二腔体内的弹性伸缩件131，例如弹簧、伸缩垫等，弹性伸缩件131沿活动控制手柄32的摆动方向伸缩，弹性伸缩件131的第一端与第二腔体的内壁固定连接或抵接，弹性伸缩件131的第二端与活动控制手柄32固定连接或抵接。例如，如图1所示，弹性伸缩件131包括分别位于活动控制手柄32两侧的弹簧和伸缩垫，弹簧的左端与第二腔体的内壁固定连接，弹簧的右端与活动控制手柄32固定连接，伸缩垫的左端与活动控制手柄32固定连接，伸缩垫的右端与第二腔体的内壁固定连接。
在一个实施例中，参阅图2，柔性显示装置还包括屏体支撑杆，屏体支撑杆沿柔性显示屏20的底端边缘固定，用于将柔性显示屏20的底端边缘抻平，四边形连杆单元314中的上连杆的右端与屏体支撑杆的中心固定连接，例如螺钉固定。
在一个实施例中，如图2所示，柔性显示装置还包括伸缩弹杆40，该伸缩弹杆40和形成四边形连杆单元的上连杆固定连接，例如固定在四边形连杆单元314中的上连杆的右端和屏体支撑杆之间，用于在驱动机构30驱动柔性显示屏20的非固定端相对于固定部正向弯折时伸长，在驱动机构30驱动柔性显示屏20的非固定端相对于固定部反向弯折时压缩，该伸缩弹杆40例如可以是气动弹簧推杆。例如，在图2所示实施例中，伸缩弹杆40在驱动机构30推动非固定端右移时伸长，在图3所示实施例中，在驱动机构30拉动非固定端左移时压缩。通过设置伸缩弹杆40，可以根据实际情况设置柔性显示屏20的弯曲程度，提高产品的适应性。
在一个实施例中，驱动机构30为电动驱动机构。例如采用电机和丝杠相 互配合，利用丝杠将电机的转动转化为直线运动。将丝杠与柔性显示屏20的端部固定，从而利用电机驱动丝杠在与显示面垂直的方向上左右移动，从而带动柔性显示屏20前后移动。电机的具体结构可以采用直流电机、异步电机、同步电机等，本申请对此不作限定。
应当理解，本申请实施例目的在于提供一种实现柔性显示屏弯折的结构，对于柔性显示屏的显示过程不作限定。此外，本申请实施例描述中所用到的限定词“第一”、“第二”、“第三”和“第四”，以及上、下、左和右仅用于更清楚的阐述技术方案，并不能用于限制本申请的保护范围。
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 (11)
- 一种柔性显示装置，包括：机壳；柔性显示屏，所述柔性显示屏包括固定部，所述固定部固定在所述机壳上；驱动机构，与所述柔性显示屏的非固定端连接，用于驱动所述柔性显示屏的所述非固定端相对所述固定部弯折。
- 根据权利要求1所述的柔性显示装置，其中，所述驱动机构包括连杆机构和与所述连杆机构铰接的活动控制手柄，所述活动控制手柄用于在外力的作用下带动所述连杆机构驱动所述柔性显示屏的所述非固定端相对所述固定部弯折。
- 根据权利要求2所述的柔性显示装置，其中，所述连杆机构包括固定横杆、第一摇杆、第二摇杆和竖直方向上的四边形连杆单元，所述固定横杆的一端固定在所述机壳上，所述第一摇杆的顶端和所述第二摇杆的顶端分别和所述固定横杆铰接，所述第一摇杆的底端和所述四边形连杆单元的第一底角铰接，所述第二摇杆的底端和形成所述四边形连杆单元的第二底角的竖杆的延长段铰接。
- 根据权利要求3所述的柔性显示装置，其中，所述第一摇杆的长度小于所述第二摇杆的长度。
- 根据权利要求3所述的柔性显示装置，其中，所述四边形连杆单元包括平行四边形连杆单元。
- 根据权利要求3所述的柔性显示装置，其中，所述活动控制手柄包括支点，所述活动控制手柄在所述支点处与所述固定横杆铰接，所述活动控制手柄的底端和所述第二底角铰接。
- 根据权利要求6所述的柔性显示装置，其中，所述活动控制手柄的支点和所述活动控制手柄的底端之间的间距等于所述第一摇杆的长度。
- 根据权利要求3所述的柔性显示装置，其中，所述连杆机构还包括伸缩弹杆，所述伸缩弹杆和形成所述四边形连杆单元的上连杆固定连接，所述弯折包括正向弯折和反向弯折，所述伸缩弹杆用于在所述驱动机构驱动所述柔性显示屏的所述非固定端相对于所述固定部正向弯折时伸长，在所述驱动机构驱动所述柔性显示屏的所述非固定端相对于所述固定部反向弯折时压缩。
- 根据权利要求2-8中任一所述的柔性显示装置，其中，所述机壳包括顶壳，所述顶壳包括腔体，所述腔体包括通孔，所述活动控制手柄穿过所述通孔以限制所述活动控制手柄的位移。
- 根据权利要求9所述的柔性显示装置，其中，所述顶壳包括位于所述腔体内的弹性伸缩件，所述弹性伸缩件的第一端与所述腔体的内壁固定连接，所述弹性伸缩件的第二端与所述活动控制手柄固定连接。
- 根据权利要求1所述的柔性显示装置，还包括屏体支撑杆，所述屏体支撑杆固定在所述柔性显示屏的非固定端，所述屏体支撑杆沿所述非固定端的边缘延伸，所述驱动机构与所述屏体支撑杆固定连接。
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| CN109979332A (zh) | 2019-07-05 |
| CN109979332B (zh) | 2020-09-08 |
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