WO2016065795A1 - 柔性显示装置 - Google Patents

柔性显示装置 Download PDF

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Publication number
WO2016065795A1
WO2016065795A1 PCT/CN2015/074272 CN2015074272W WO2016065795A1 WO 2016065795 A1 WO2016065795 A1 WO 2016065795A1 CN 2015074272 W CN2015074272 W CN 2015074272W WO 2016065795 A1 WO2016065795 A1 WO 2016065795A1
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WO
WIPO (PCT)
Prior art keywords
display device
abutting surface
flexible display
display screen
abutting
Prior art date
Application number
PCT/CN2015/074272
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English (en)
French (fr)
Inventor
祝尚杰
Original Assignee
京东方科技集团股份有限公司
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Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US14/778,698 priority Critical patent/US9743512B2/en
Priority to EP15762462.8A priority patent/EP3214490B1/en
Publication of WO2016065795A1 publication Critical patent/WO2016065795A1/zh

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0277—Bendability or stretchability details
    • H05K1/028—Bending or folding regions of flexible printed circuits
    • 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
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133305—Flexible substrates, e.g. plastics, organic film
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
    • H04M1/0268—Details of the structure or mounting of specific components for a display module assembly including a flexible display panel
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/0017—Casings, cabinets or drawers for electric apparatus with operator interface units
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10128—Display
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/311—Flexible OLED

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a flexible display device.
  • the flexible display device is made of a flexible substrate and thus has flexibility.
  • the flexible display device has the advantages of flexibility, flexibility, high durability, lighter weight, lower power consumption, etc., and is widely used in many fields such as smart wearable electronic devices and portable mobile electronic devices, and has become a research field in the field. Hot spot.
  • the flexible display device can be bent toward the display surface or the back surface (the side opposite to the display surface), but if the degree of curvature exceeds a certain degree, the display device is liable to be damaged due to excessive bending.
  • a plurality of confinement structures 11 are provided on the edge area A2 of the back surface of the display screen 12 (the edge area A2 is located around the display area A1), and the restriction structure 11 is a terrace shape. structure.
  • the side faces of the adjacent restricting structures 11 abut each other, so that the display screen 12 cannot be further bent after being bent at a certain angle, so that the problem that the display screen 12 is damaged by excessive bending can be eliminated.
  • the above-described restriction structure can only prevent the display device from being excessively bent toward the back surface, and cannot limit the degree of bending when the display device is bent toward the display surface. If it is necessary to limit the extent to which the display device is bent toward the display surface, it is necessary to provide a restriction structure in the frame region of the display surface, which undoubtedly further increases the thickness of the display device and causes the frame width of the display device to be narrow.
  • the technical problem to be solved by the present invention is to provide a flexible display device, which can realize the pair without further increasing the thickness of the display device and without limiting the width of the frame of the display device.
  • the display device is limited to the extent that it is curved in both the display surface and the back surface.
  • the present invention provides a flexible display device comprising: a display screen, wherein one side of the display screen for displaying a screen is a display surface, a side opposite to the display surface is a back surface; and a plurality of limiting structures disposed on the back surface
  • the limiting structure includes a bottom end, a head end, and a tail end; The end surface of the bottom end is fixed to the back surface of the display screen; the head end has a protrusion, and the protrusion includes a first first resisting surface and a second resisting surface, the first resisting surface and the first resisting surface An angle between the second abutting surface is opposite to the display screen; the tail end has a groove, and the groove includes a third abutting surface and a fourth abutting surface that are in contact with each other.
  • An opening of the angle between the third abutting surface and the fourth abutting surface faces away from the display screen, and an angle between the third abutting surface and the fourth abutting surface is greater than An angle between the first abutting surface and the second abutting surface;
  • the plurality of limiting structures are arranged in at least one row, and the protrusion of the rear limiting structure in one row is located in the concave of the previous limiting structure In the slot, the first abutting surface of the latter limiting structure is opposite to the third abutting surface of the previous limiting structure, and the second abutting surface of the latter limiting structure is opposite to the fourth abutting surface of the previous limiting structure;
  • an angle between the first abutting surface and the second abutting surface is 15 degrees to 75 degrees.
  • an angle between the third abutting surface and the fourth abutting surface is between 90 degrees and 150 degrees.
  • the plurality of limiting structures are arranged in four rows, respectively arranged in parallel with the four sides of the display screen.
  • the plurality of limiting structures are located at an edge region of the back of the display screen.
  • the first curvature is less than or equal to a maximum curvature that the flexible display device can reach toward the back surface without damage.
  • the second curvature is less than or equal to a maximum curvature that the flexible display device can achieve when bent toward the display surface without damage.
  • a portion of the protrusion of the latter limiting structure that meets the first abutting surface and the second abutting surface passes through a mandrel and a third abutting surface and a fourth abutting surface of the groove of the previous limiting structure
  • the adjacent portions are connected such that when the flexible display device is bent toward the back surface, the protrusion of the latter restriction structure rotates counterclockwise about the mandrel in the groove of the previous restriction structure, and When the flexible display device is bent toward the display surface, the projection of the latter restriction structure rotates clockwise around the mandrel in the groove of the previous restriction structure.
  • an end surface of the bottom end of the plurality of limiting structures is bonded to the back surface of the display screen.
  • the flexible display device further includes: a guide rail disposed on the back of the display screen and disposed along the frame of the display screen, wherein a bottom end of the plurality of limiting structures is movably coupled to the rail to enable The plurality of restraining structures are movable along the rail.
  • the restriction structure is provided only on the back surface of the display device, the thickness of the display device is not increased, and the frame width of the display device is not limited.
  • the limiting end of the limiting structure has a protrusion, and the tail end has a groove, and an angle between the first abutting surface and the second abutting surface constituting the protrusion is smaller than a third abutting surface and a fourth abutting forming the groove The angle between the faces.
  • the protrusion of the latter limiting structure is located in the groove of the previous limiting structure, and the first abutting surface of the latter limiting structure is opposite to the third abutting surface of the previous limiting structure, the latter
  • the second abutment surface of the confinement structure is opposite the fourth abutment surface of the previous restriction structure.
  • the purpose of limiting the thickness of the display device without limiting the width of the frame of the display device is to limit the bending degree of the display device toward the display surface and the back surface, thereby effectively preventing the display device from being excessively bent. Damage caused.
  • Figure 1a is a plan view of a prior art flexible display device
  • Figure 1b is a cross-sectional view of the display device shown in Figure 1a along the AA' direction;
  • Figure 1c is a cross-sectional view of the prior art flexible display device when bent toward the back side;
  • FIG. 2a is a cross-sectional view of a flexible display device according to an embodiment of the present invention.
  • FIG. 2b is a cross-sectional view of a limiting structure of a flexible display device according to an embodiment of the present invention
  • 2c is a cross-sectional view of the flexible display device according to an embodiment of the present invention when bent toward the back side;
  • 2d is a cross-sectional view of the flexible display device according to an embodiment of the present invention when it is bent toward a display surface.
  • the embodiment of the present invention provides a flexible display device, as shown in FIG. 2a and FIG. 2b, comprising: a display screen 22, wherein one side of the display screen 22 for displaying a screen is a display surface, and a side opposite to the display surface is a back surface; A plurality of confinement structures 21 are provided on the back side.
  • the restriction structure 21 includes a bottom end, a head end, and a tail end.
  • the end surface A5 of the bottom end is fixed to the back surface of the display screen 22;
  • the first end has a protrusion 211, and the protrusion 211 includes a first abutting surface A1 and a second abutting surface A2, and the first abutting surface A1 and
  • the opening of the angle ⁇ 1 between the second abutting surface A2 faces away from the display screen 22;
  • the tail end has a groove 212, and the groove 212 includes a third abutting surface A3 and a fourth abutting surface A4,
  • the opening of the angle ⁇ 2 between the third abutting surface A3 and the fourth abutting surface A4 faces away from the display screen 22, and the angle ⁇ 2 between the third abutting surface A3 and the fourth abutting surface A4 is greater than the first offset.
  • the plurality of confinement structures are arranged in at least one row, and the protrusions 211 of the rear one restriction structure are located in the grooves 212 of the previous restriction structure, and the first abutment surface A1 of the latter restriction structure and the previous restriction structure
  • the third abutting surface A3 is opposed to each other, and the second abutting surface A2 of the latter restricting structure is opposed to the fourth abutting surface A4 of the previous restricting structure.
  • the first abutting surface A1 of the latter restricting structure and the third abutting surface A3 of the preceding restricting structure abut each other to prevent the flexible display device from further bending.
  • the flexible display device When the flexible display device is bent toward the display surface to the second curvature, the second abutting surface A2 of the latter restricting structure and the fourth abutting surface A4 of the previous restricting structure abut each other to prevent the softness
  • the sexual display device is further bent.
  • the curvature of the curvature that is, the value of the first curvature is determined; an angle ⁇ 2 is formed between the second abutment surface A2 of the latter restriction structure and the fourth abutment surface A4 of the previous restriction structure, the angle ⁇ 2 being the orientation of the display device.
  • the curvature of the display surface that can be curved that is, the value of the second curvature is determined.
  • the first abutting surface A1 of the latter restricting structure rotates opposite to the third abutting surface A3 of the previous restricting structure, when the two rotate together through the angle ⁇ 1 Will fit completely, creating a mutual resistance, and the display device can no longer be further bent toward the back side, thereby limiting the curvature of the display device toward the back side within the first curvature.
  • the second abutting surface A2 of the latter restricting structure rotates opposite to the fourth abutting surface A4 of the previous restricting structure, when the two rotate together through the angle ⁇ 2 At the same time, it will completely conform to each other and cause mutual resistance, and the display device can no longer be further bent toward the display surface, thereby limiting the curvature of the display device toward the display surface within the second curvature.
  • the flexible display device achieves the limitation of the degree of bending in the display surface and the back surface of the display device, and effectively avoids damage caused by excessive bending of the display device. Since the above-described object can be achieved by providing only the restricting structure for limiting the degree of bending on the back surface of the display device, it is no longer necessary to provide a restricting structure for restricting the degree of bending toward the display surface on the display surface of the display device, and thus the thickness of the display device is not caused. Further increasing and limiting the width of the frame of the display device facilitates thinning and narrowing of the display device.
  • the first curvature described in this embodiment may be less than or equal to the maximum curvature that the flexible display device can reach toward the back surface without damage, and the second curvature may be less than or equal to the flexible display device.
  • the degree to which the flexible display device is actually bendable toward the back surface ie, the first curvature
  • the degree to which the display surface is actually bendable ie, the second curvature
  • the angle ⁇ 1 between the first abutting surface A1 of the rear limiting structure and the third abutting surface A3 of the previous limiting structure and the second abutting surface A2 of the latter limiting structure The angle between the four abutting faces A4 is ⁇ 2.
  • ⁇ 1 and ⁇ 2 are further dependent on the angle ⁇ 1 between the first abutting surface A1 and the second abutting surface A2 of the protrusion 211 of the confinement structure 21, and the third abutting surface A3 and the fourth abutting surface of the recess 212
  • a flexible display device having a desired degree of curvature can be obtained by setting the inclination degree and the inclination direction of ⁇ 1, ⁇ 2 and each abutting surface. More specifically, the angle ⁇ 1 between the first abutting surface A1 and the second abutting surface A2 may preferably be between 15 degrees and 75 degrees, and between the third abutting surface A3 and the fourth abutting surface A4. The angle ⁇ 2 may preferably be from 90 to 150 degrees.
  • the restriction structure 21 can be disposed on the edge area of the back surface of the display screen 22, and the display area of the display screen 22 is not provided with the restriction structure 21, ensuring that the restriction structure 21 does not affect the display quality.
  • the two adjacent limiting structures 21 are independent of each other and are not connected to each other, and the bending degree of the display device is limited only by placing the protrusion 211 of the latter limiting structure in the groove 212 of the previous limiting structure. .
  • leading end and the trailing end of the adjacent two limiting structures 21 may also be connected to prevent the protrusion 211 of the latter limiting structure from being recessed from the front limiting structure when the display device is bent too much. The situation in which 212 slips out and cannot be restored appears. Specifically, a portion of the protrusion 211 of the latter limiting structure where the first abutting surface A1 and the second abutting surface A2 meet (ie, the tip end of the protrusion 211) can pass through a mandrel and a groove of the previous limiting structure.
  • the portion where the third abutting surface A3 and the fourth abutting surface A4 are in contact with each other ie, the tip end of the groove 212 is connected, so that when the flexible display device is bent toward the back side, the protrusion 211 of the latter restricting structure is in the front
  • the groove 212 of the restricting structure rotates counterclockwise about the mandrel, and when the flexible display device is bent toward the display surface, the protrusion 211 of the latter restricting structure rotates clockwise around the mandrel in the groove 212 of the previous restricting structure.
  • the bottom ends of the plurality of limiting structures can be bonded to the back side of the display screen 22 to achieve a fixed connection of the restraining structure 21 to the display screen 22.
  • the movable connection of the restraining structure 21 to the display screen 22 can also be achieved by providing a microstructure on the back of the display screen 22.
  • a guide rail may be disposed on the back of the display screen 22 along the frame of the display screen 22, and the bottom ends of the plurality of restricting structures are movably connected to the guide rails, so that the plurality of restricting structures 21 can be moved along the guide rails, thereby being in the flexible display device.
  • the stress generated by the mutual pressing of the respective restricting structures 21 can be reduced by restricting the movement of the structure 21 on the guide rail, which is advantageous for improving the reliability of the flexible display device.
  • the display screen in this embodiment may be a liquid crystal panel, an electronic paper or an OLED (Organic Light Emitting Diode) panel, and is used for a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, and a navigation device having flexibility.
  • Display device such as instrument.

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Abstract

一种柔性显示装置，包括：显示屏(22)；设置于显示屏背面的多个限制结构(21)，其底端的端面固定于显示屏背面；首端具有凸起(211)，凸起(211)包括相接的第一抵持面(A1)和第二抵持面(A2)，二者的夹角( 1)的开口背向显示屏(22)；尾端具有凹槽(212)，凹槽(212)包括相接的第三抵持面(A3)和第四抵持面(A4)，二者的夹角( 2)的开口背向显示屏(22)，且大于所述第一抵持面(A1)与第二抵持面(A2)的夹角；多个限制结构(21)排成至少一排，一排限制结构(21)中后一限制结构的凸起(211)位于前一限制结构的凹槽(212)内；当所述柔性显示装置朝向显示屏背面弯曲时，后一限制结构的第一抵持面(A1)与前一限制结构的第三抵持面(A3)相互抵持，并且当所述柔性显示装置朝向显示屏显示面弯曲时，后一限制结构的第二抵持面(A2)与前一限制结构的第四抵持面(A4)相互抵持。

Description

柔性显示装置 技术领域
本发明涉及显示技术领域，尤其涉及柔性显示装置。
背景技术
柔性显示装置采用柔性基板制作，因而具有柔性。柔性显示装置具有可弯曲、柔韧性佳、耐用度高、更加轻薄、功耗低等优点，使其被广泛应用于智能可穿戴式电子设备、便携式移动电子设备等诸多领域，成为目前领域内研究的热点。
柔性显示装置能够朝向显示面或背面(与显示面相对的一面)弯曲，但是若弯曲度超过一定程度时，显示装置就容易由于过度弯曲而发生损坏。如图1a、图1b和图1c所示，现有技术中在显示屏12背面的边缘区域A2(边缘区域A2位于显示区域A1的周围)上设置多个限制结构11，限制结构11为梯台形结构。当显示屏12朝向背面弯曲时，相邻限制结构11的侧面相互抵持，使显示屏12在弯曲一定角度后无法进一步弯曲，从而可消除显示屏12被过度弯曲造成损坏的问题。
但是，上述限制结构仅能防止显示装置朝向背面过度弯曲，无法限制显示装置朝向显示面弯曲时的弯曲程度。若需限制显示装置朝向显示面弯曲的程度，则需在显示面的边框区域设置限制结构，这无疑会使显示装置的厚度进一步增加，且造成显示装置的边框宽度无法做窄。
发明内容
为克服上述现有技术中的缺陷，本发明所要解决的技术问题为：提供一种柔性显示装置，以在不进一步增大显示装置厚度，不对显示装置的边框宽度造成限制的前提下，实现对显示装置朝向显示面和背面两个方向弯曲的程度的限制。
为达到上述目的，本发明采用如下技术方案：
本发明提供了一种柔性显示装置，包括：显示屏，所述显示屏中进行画面显示的一面为显示面，与所述显示面相对的一面为背面；设置于所述背面的多个限制结构，所述限制结构包括底端、首端和尾端； 所述底端的端面固定于所述显示屏的背面；所述首端具有凸起，所述凸起包括相接的第一抵持面和第二抵持面，所述第一抵持面与所述第二抵持面之间的夹角的开口背向所述显示屏；所述尾端具有凹槽，所述凹槽包括相接的第三抵持面和第四抵持面，所述第三抵持面与所述第四抵持面之间的夹角的开口背向所述显示屏，且所述第三抵持面与所述第四抵持面之间的夹角大于所述第一抵持面与所述第二抵持面之间的夹角；所述多个限制结构排成至少一排，一排中后一限制结构的凸起位于前一限制结构的凹槽内，且后一限制结构的第一抵持面与前一限制结构的第三抵持面相对，后一限制结构的第二抵持面与前一限制结构的第四抵持面相对；当所述柔性显示装置朝向所述背面弯曲至第一曲率时，所述后一限制结构的第一抵持面与所述前一限制结构的第三抵持面相互抵持，以防止所述柔性显示装置进一步弯曲；当所述柔性显示装置朝向所述显示面弯曲至第二曲率时，所述后一限制结构的第二抵持面与所述前一限制结构的第四抵持面相互抵持，以防止所述柔性显示装置进一步弯曲。
优选的，所述第一抵持面与所述第二抵持面之间的夹角为15度～75度。
优选的，所述第三抵持面与所述第四抵持面之间的夹角为90度～150度。
优选的，所述多个限制结构排成四排，分别与所述显示屏的四边平行设置。
优选的，所述多个限制结构位于所述显示屏的背面的边缘区域。
优选的，所述第一曲率小于或等于所述柔性显示装置在不损坏的前提下朝向所述背面弯曲所能够达到的最大曲率。
优选的，所述第二曲率小于或等于所述柔性显示装置在不损坏的前提下朝向所述显示面弯曲所能够达到的最大曲率。
优选的，后一限制结构的凸起中第一抵持面和第二抵持面相接的部位通过一芯轴与前一限制结构的凹槽中第三抵持面和第四抵持面相接的部位连接，以使在所述柔性显示装置朝向所述背面弯曲时，后一限制结构的凸起在前一限制结构的凹槽中绕所述芯轴逆时针转动，并且在所述柔性显示装置朝向所述显示面弯曲时，后一限制结构的凸起在前一限制结构的凹槽中绕所述芯轴顺时针转动。
优选的，所述多个限制结构的底端的端面粘接于所述显示屏的背面。
优选的，所述柔性显示装置还包括：位于所述显示屏背面且沿所述显示屏边框设置的导轨，所述多个限制结构的底端可移动地连接于所述导轨上，以使所述多个限制结构能够沿所述导轨移动。
本发明所提供的柔性显示装置中，由于限制结构仅设置于显示装置背面，因此不会增大显示装置厚度，也不会对显示装置的边框宽度造成限制。限制结构的首端具有凸起，尾端具有凹槽，构成凸起的第一抵持面与第二抵持面之间的夹角小于构成凹槽的第三抵持面与第四抵持面之间的夹角。在一排限制结构中，后一限制结构的凸起位于前一限制结构的凹槽内，且后一限制结构的第一抵持面与前一限制结构的第三抵持面相对，后一限制结构的第二抵持面与前一限制结构的第四抵持面相对。当显示装置朝向背面弯曲时，后一限制结构的第一抵持面与前一限制结构的第三抵持面相抵持，防止了显示装置朝向背面过度弯曲；当显示装置朝向显示面弯曲时，后一限制结构的第二抵持面与前一限制结构的第四抵持面相抵持，防止了显示装置朝向显示面过度弯曲。从而实现了在不进一步增大显示装置厚度，不对显示装置的边框宽度造成限制的前提下，限制显示装置朝向显示面和背面两个方向的弯曲程度的目的，有效地避免了显示装置被过度弯曲造成的损坏。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍。显而易见地，下面描述中的附图仅仅是本发明的一些实施例，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，还可以根据这些附图获得其它的附图。
图1a为现有技术中柔性显示装置的平面图；
图1b为图1a中所示出的显示装置沿AA′方向的截面图；
图1c为现有技术中柔性显示装置在朝向背面弯曲时的截面图；
图2a为本发明实施例所提供的柔性显示装置的截面图；
图2b为本发明实施例所提供的柔性显示装置的限制结构的截面 图；
图2c为本发明实施例所提供的柔性显示装置在朝向背面弯曲时的截面图；
图2d为本发明实施例所提供的柔性显示装置在朝向显示面弯曲时的截面图。
具体实施方式
为使本发明的上述目的、特征和优点能够更加明显易懂，下面将结合附图，对本发明实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动的前提下所获得的所有其它实施例，均属于本发明保护的范围。
本发明实施例提供了一种柔性显示装置，如图2a和图2b所示，包括：显示屏22，该显示屏22中进行画面显示的一面为显示面，与显示面相对的一面为背面；设置于背面的多个限制结构21。
限制结构21包括底端、首端和尾端。其中，底端的端面A5固定于显示屏22的背面；首端具有凸起211，该凸起211包括相接的第一抵持面A1和第二抵持面A2，第一抵持面A1与第二抵持面A2之间的夹角α1的开口背向显示屏22；尾端具有凹槽212，该凹槽212包括相接的第三抵持面A3和第四抵持面A4，第三抵持面A3与第四抵持面A4之间的夹角α2的开口背向显示屏22，且第三抵持面A3与第四抵持面A4之间的夹角α2大于第一抵持面A1与第二抵持面A2之间的夹角α1。
多个限制结构排成至少一排，一排中后一限制结构的凸起211位于前一限制结构的凹槽212内，且后一限制结构的第一抵持面A1与前一限制结构的第三抵持面A3相对，后一限制结构的第二抵持面A2与前一限制结构的第四抵持面A4相对。
当柔性显示装置朝向背面弯曲至第一曲率时，后一限制结构的第一抵持面A1与前一限制结构的第三抵持面A3相互抵持，以防止柔性显示装置进一步弯曲。
当柔性显示装置朝向显示面弯曲至第二曲率时，后一限制结构的第二抵持面A2与前一限制结构的第四抵持面A4相互抵持，以防止柔 性显示装置进一步弯曲。
具体的，参见图2a，当柔性显示装置不进行弯曲时，显示屏22的显示面与背面均为平面，各限制结构21处于同一平面上。此时，由于α2＞α1，因此后一限制结构的第一抵持面A1与前一限制结构的第三抵持面A3之间形成夹角θ1，该夹角θ1为显示装置朝向背面所能弯曲的弧度，即确定第一曲率的值；后一限制结构的第二抵持面A2与前一限制结构的第四抵持面A4之间形成夹角θ2，该夹角θ2为显示装置朝向显示面所能弯曲的弧度，即确定第二曲率的值。
当显示装置朝向背面弯曲时，如图2c所示，后一限制结构的第一抵持面A1与前一限制结构的第三抵持面A3相向转动，当二者共同转过夹角θ1时，会完全贴合，产生相互抵持作用，显示装置不再能够进一步朝向背面弯曲，从而将显示装置朝向背面弯曲的曲率限制在第一曲率内。
当显示装置朝向显示面弯曲时，如图2d所示，后一限制结构的第二抵持面A2与前一限制结构的第四抵持面A4相向转动，当二者共同转过夹角θ2时，会完全贴合，产生相互抵持作用，显示装置不再能够进一步朝向显示面弯曲，从而将显示装置朝向显示面弯曲的曲率限制在第二曲率内。
可见，本实施例所提供的柔性显示装置实现了对显示装置的显示面和背面两个方向的弯曲程度的限制，有效的避免了显示装置因弯曲过度造成的损坏。由于仅在显示装置的背面设置进行弯曲程度限制的限制结构就能够实现上述目的，无需再在显示装置的显示面上设置限制朝向显示面弯曲的程度的限制结构，因此不会造成显示装置厚度的进一步增大和对显示装置的边框宽度的限制，有利于显示装置的轻薄化和窄边框化。
需要说明的是，本实施例中所述的第一曲率可小于或等于柔性显示装置在不损坏的前提下朝向背面弯曲所能够达到的最大曲率，第二曲率可小于或等于柔性显示装置在不损坏的前提下朝向显示面弯曲所能够达到的最大曲率，从而有效地保证柔性显示装置不至于由于过度弯曲而损坏。
本实施例中，柔性显示装置朝向背面所实际能弯曲的程度(即第一曲率)与朝向显示面所实际能弯曲的程度(即第二曲率)分别取决 于柔性显示装置不弯曲时后一限制结构的第一抵持面A1与前一限制结构的第三抵持面A3之间的夹角θ1以及后一限制结构的第二抵持面A2与第四抵持面A4之间的夹角θ2。θ1与θ2又取决于限制结构21的凸起211的第一抵持面A1与第二抵持面A2之间的夹角α1，凹槽212的第三抵持面A3与第四抵持面A4之间的夹角α2，以及第一抵持面A1、第二抵持面A2、第三抵持面A3和第四抵持面A4各自相对于限制结构21的底端的端面A5的倾斜程度和倾斜方向。因此可通过对α1、α2以及各抵持面的倾斜程度和倾斜方向的设置，得到具有所需要的弯曲度的柔性显示装置。更为具体的是，第一抵持面A1与第二抵持面A2之间的夹角α1优选的可为15度～75度，第三抵持面A3与第四抵持面A4之间的夹角α2优选的可为90度～150度。
为了使柔性显示装置能够沿平行于显示屏22的四条边的方向弯曲，优选的可使多个限制结构21排成四排，所排成的四排限制结构分别与显示屏22的四边平行设置。更为优选的是，可将限制结构21设置于显示屏22的背面的边缘区域，显示屏22的显示区域不设置限制结构21，保证限制结构21不会对显示品质产生影响。
本实施例中，相邻两个限制结构21可相互独立，互不连接，仅通过将后一限制结构的凸起211置于前一限制结构的凹槽212中实现对显示装置弯曲程度的限制。
在其它实施例中，还可将相邻两个限制结构21的首端和尾端连接起来，以防止后一限制结构的凸起211在显示装置弯曲程度过大时从前一限制结构的凹槽212中滑出而无法复原的情况出现。具体的，后一限制结构的凸起211中第一抵持面A1和第二抵持面A2相接的部位(即凸起211的尖端)可通过一芯轴与前一限制结构的凹槽212中第三抵持面A3和第四抵持面A4相接的部位(即凹槽212的尖端)连接，从而在柔性显示装置朝向背面弯曲时，后一限制结构的凸起211在前一限制结构的凹槽212中绕芯轴逆时针转动，并且在柔性显示装置朝向显示面弯曲时，后一限制结构的凸起211在前一限制结构的凹槽212中绕芯轴顺时针转动。既保证了限制结构对弯曲程度的限制作用的实现，又防止了凸起211在显示装置弯曲程度过大时从凹槽212中滑出而无法复原的情况出现，提高了柔性显示装置的可靠性。
另外，本实施所提供的柔性显示装置中，多个限制结构的底端的 端面A5可粘接于显示屏22的背面，从而实现限制结构21与显示屏22的固定连接。在其它实施例中，还可通过在显示屏22的背面设置微结构实现限制结构21与显示屏22的可移动连接。具体的，可在显示屏22背面、沿显示屏22边框设置导轨，将多个限制结构的底端可移动地连接于导轨上，使多个限制结构21能够沿导轨移动，从而在柔性显示装置弯曲时，各个限制结构21之间相互挤压所产生的应力能够通过限制结构21在导轨上的移动而减小，有利于提高柔性显示装置的可靠性。
需要说明的是，本实施例中的显示屏可以为液晶面板、电子纸或OLED(有机发光二极管)面板，用于具有柔性的手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等显示装置。
以上所述仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所附权利要求的保护范围为准。

Claims (10)

  1. 一种柔性显示装置，包括：显示屏，所述显示屏中进行画面显示的一面为显示面，与所述显示面相对的一面为背面；设置于所述显示屏背面的多个限制结构，其特征在于，所述限制结构包括底端、首端和尾端；所述底端的端面固定于所述显示屏的背面；所述首端具有凸起，所述凸起包括相接的第一抵持面和第二抵持面，所述第一抵持面与所述第二抵持面之间的夹角的开口背向所述显示屏；所述尾端具有凹槽，所述凹槽包括相接的第三抵持面和第四抵持面，所述第三抵持面与所述第四抵持面之间的夹角的开口背向所述显示屏，且所述第三抵持面与所述第四抵持面之间的夹角大于所述第一抵持面与所述第二抵持面之间的夹角；
    所述多个限制结构排成至少一排，一排中后一限制结构的凸起位于前一限制结构的凹槽内，且后一限制结构的第一抵持面与前一限制结构的第三抵持面相对，后一限制结构的第二抵持面与前一限制结构的第四抵持面相对；
    当所述柔性显示装置朝向所述背面弯曲至第一曲率时，所述后一限制结构的第一抵持面与所述前一限制结构的第三抵持面相互抵持；当所述柔性显示装置朝向所述显示面弯曲至第二曲率时，所述后一限制结构的第二抵持面与所述前一限制结构的第四抵持面相互抵持。
  2. 根据权利要求1所述的柔性显示装置，其特征在于，所述第一抵持面与所述第二抵持面之间的夹角为15度～75度。
  3. 根据权利要求1所述的柔性显示装置，其特征在于，所述第三抵持面与所述第四抵持面之间的夹角为90度～150度。
  4. 根据权利要求1所述的柔性显示装置，其特征在于，所述多个限制结构排成四排，分别与所述显示屏的四边平行设置。
  5. 根据权利要求4所述的柔性显示装置，其特征在于，所述多个限制结构位于所述显示屏的背面的边缘区域。
  6. 根据权利要求1所述的柔性显示装置，其特征在于，所述第一曲率小于或等于所述柔性显示装置在不损坏的前提下朝向所述背面弯曲所能够达到的最大曲率。
  7. 根据权利要求1所述的柔性显示装置，其特征在于，所述第二 曲率小于或等于所述柔性显示装置在不损坏的前提下朝向所述显示面弯曲所能够达到的最大曲率。
  8. 根据权利要求1所述的柔性显示装置，其特征在于，后一限制结构的凸起中第一抵持面和第二抵持面相接的部位通过一芯轴与前一限制结构的凹槽中第三抵持面和第四抵持面相接的部位连接，以使在所述柔性显示装置朝向所述背面弯曲时，后一限制结构的凸起在前一限制结构的凹槽中绕所述芯轴逆时针转动，并且在所述柔性显示装置朝向所述显示面弯曲时，后一限制结构的凸起在前一限制结构的凹槽中绕所述芯轴顺时针转动。
  9. 根据权利要求1～8任一项所述的柔性显示装置，其特征在于，所述多个限制结构的底端的端面粘接于所述显示屏的背面。
  10. 根据权利要求1～8任一项所述的柔性显示装置，其特征在于，所述柔性显示装置还包括：位于所述显示屏背面且沿所述显示屏边框设置的导轨，所述多个限制结构的底端可移动地连接于所述导轨上，以使所述多个限制结构能够沿所述导轨移动。
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Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104318869B (zh) * 2014-10-31 2017-01-18 京东方科技集团股份有限公司 一种柔性显示装置
KR101665365B1 (ko) * 2015-06-10 2016-10-12 (주) 프렉코 캠구조를 가지는 플렉시블 힌지 장치
CN104851369B (zh) * 2015-06-12 2017-11-14 京东方科技集团股份有限公司 一种柔性显示面板及其驱动方法、显示装置
KR102534599B1 (ko) 2016-05-10 2023-05-22 삼성디스플레이 주식회사 롤러블 표시 장치 및 이를 포함하는 전자 기기
WO2019018253A1 (en) * 2017-07-17 2019-01-24 3M Innovative Properties Company BEND LIMIT FILM
CN107516472B (zh) * 2017-08-31 2021-05-07 广州国显科技有限公司 柔性显示装置
CN108831296B (zh) * 2018-05-21 2019-12-31 云谷（固安）科技有限公司 柔性显示装置
US10847065B2 (en) 2018-05-21 2020-11-24 Yungu (Gu'an) Technology Co., Ltd. Flexible display device
CN110547554B (zh) * 2018-05-31 2021-06-01 努比亚技术有限公司 一种连接链节、链条组件和终端
CN109495610A (zh) * 2018-05-31 2019-03-19 努比亚技术有限公司 终端及其组装方法
CN110547561B (zh) * 2018-05-31 2021-08-06 努比亚技术有限公司 一种链条组件及终端
CN110322798A (zh) * 2019-06-19 2019-10-11 深圳市奥拓电子股份有限公司 弧形led显示屏
CN113366558A (zh) * 2019-07-25 2021-09-07 深圳市柔宇科技股份有限公司 柔性显示装置及终端
US11372490B2 (en) * 2020-03-30 2022-06-28 Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. Touch panel and touch display panel
CN113870711B (zh) * 2021-09-29 2023-08-22 惠州华星光电显示有限公司 弯折限位装置以及柔性显示器
US11935438B2 (en) 2021-09-29 2024-03-19 Huizhou China Star Optoelectronics Display Co., Ltd. Bend limiting device and flexible display device
CN115013653A (zh) * 2022-05-26 2022-09-06 上海天马微电子有限公司 支撑组件及显示装置
CN115331547B (zh) * 2022-07-18 2023-12-15 昆山国显光电有限公司 显示面板、显示装置及显示面板的制备方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006090434A1 (ja) * 2005-02-22 2006-08-31 Fujifilm Corporation 塑性変形を抑制する可撓性基材及び可撓性画像表示装置
US20080018631A1 (en) * 2006-07-24 2008-01-24 Kabushiki Kaisha Toshiba Display device
US20120081849A1 (en) * 2009-03-18 2012-04-05 Po-Wen Hsiao Flexible display device
WO2014010329A1 (ja) * 2012-07-09 2014-01-16 ソニー株式会社 表示装置および電子機器
CN103971603A (zh) * 2014-04-25 2014-08-06 京东方科技集团股份有限公司 柔性显示器和柔性显示装置
CN203825958U (zh) * 2014-04-25 2014-09-10 京东方科技集团股份有限公司 柔性显示器和柔性显示装置
CN104318869A (zh) * 2014-10-31 2015-01-28 京东方科技集团股份有限公司 一种柔性显示装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8654519B2 (en) * 2007-11-21 2014-02-18 Creator Technology B.V. Electronic device with a flexible display
US20120283878A1 (en) * 2011-05-06 2012-11-08 Bruce Richard Roberts Controller and solid state lighting device for large area applications
KR101649117B1 (ko) * 2011-11-08 2016-08-22 삼성전자주식회사 플렉시블 디스플레이장치
US9711752B2 (en) * 2011-12-19 2017-07-18 Lg Electronics Inc. Display apparatus
EP2728432A1 (en) * 2012-11-02 2014-05-07 BlackBerry Limited Support for a flexible display
KR101986796B1 (ko) * 2013-01-14 2019-06-10 삼성디스플레이 주식회사 표시 장치
KR102143746B1 (ko) * 2013-05-14 2020-08-13 삼성디스플레이 주식회사 표시 장치
KR102081112B1 (ko) * 2013-07-31 2020-02-25 엘지디스플레이 주식회사 곡면 디스플레이 장치 및 그의 곡률 제어 방법
KR102219510B1 (ko) * 2014-02-04 2021-02-25 삼성디스플레이 주식회사 표시장치 및 이에 채용되는 곡률가변장치
WO2015160099A1 (en) * 2014-04-15 2015-10-22 Lg Electronics Inc. Display apparatus
EP2940552B1 (en) * 2014-04-29 2020-04-22 LG Display Co., Ltd. Adjustable display device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006090434A1 (ja) * 2005-02-22 2006-08-31 Fujifilm Corporation 塑性変形を抑制する可撓性基材及び可撓性画像表示装置
US20080018631A1 (en) * 2006-07-24 2008-01-24 Kabushiki Kaisha Toshiba Display device
US20120081849A1 (en) * 2009-03-18 2012-04-05 Po-Wen Hsiao Flexible display device
WO2014010329A1 (ja) * 2012-07-09 2014-01-16 ソニー株式会社 表示装置および電子機器
CN103971603A (zh) * 2014-04-25 2014-08-06 京东方科技集团股份有限公司 柔性显示器和柔性显示装置
CN203825958U (zh) * 2014-04-25 2014-09-10 京东方科技集团股份有限公司 柔性显示器和柔性显示装置
CN104318869A (zh) * 2014-10-31 2015-01-28 京东方科技集团股份有限公司 一种柔性显示装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3214490A4 *

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