WO2020220601A1 - 一种柔性显示装置 - Google Patents

一种柔性显示装置 Download PDF

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Publication number
WO2020220601A1
WO2020220601A1 PCT/CN2019/112274 CN2019112274W WO2020220601A1 WO 2020220601 A1 WO2020220601 A1 WO 2020220601A1 CN 2019112274 W CN2019112274 W CN 2019112274W WO 2020220601 A1 WO2020220601 A1 WO 2020220601A1
Authority
WO
WIPO (PCT)
Prior art keywords
component
reel
display module
display device
display panel
Prior art date
Application number
PCT/CN2019/112274
Other languages
English (en)
French (fr)
Inventor
韩文
张卓
王芳
Original Assignee
武汉华星光电半导体显示技术有限公司
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 武汉华星光电半导体显示技术有限公司 filed Critical 武汉华星光电半导体显示技术有限公司
Priority to US16/621,380 priority Critical patent/US11170671B1/en
Publication of WO2020220601A1 publication Critical patent/WO2020220601A1/zh

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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
    • G06F1/1601—Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays
    • 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
    • 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
    • G06F2200/00—Indexing scheme relating to G06F1/04 - G06F1/32
    • G06F2200/16—Indexing scheme relating to G06F1/16 - G06F1/18
    • G06F2200/161—Indexing scheme relating to constructional details of the monitor
    • G06F2200/1612—Flat panel monitor
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2200/00—Indexing scheme relating to G06F1/04 - G06F1/32
    • G06F2200/16—Indexing scheme relating to G06F1/16 - G06F1/18
    • G06F2200/163—Indexing scheme relating to constructional details of the computer
    • G06F2200/1634—Integrated protective display lid, e.g. for touch-sensitive display in handheld computer

Definitions

  • This application relates to the field of display technology, and in particular to a flexible display device.
  • flexible display panels can be prepared in various forms, they are favored by the application market. At the same time, as people's requirements for visual enjoyment increase, larger and larger display screens have become the development direction of the future market. However, an oversized display panel is not conducive to carrying and storing when going out.
  • flexible displays usually adopt the form of folding outward or inward folding of the display panel to convert the size of the screen in the form of double folding or single roll curling. However, if the bending radius is small or the diameter of the reel is small, the display panel will be overstressed due to local stress. The film splits and cracks and other failures occur. Therefore, how to use the performance of the flexible display panel such as bending resistance to reduce the stress during folding/rewinding so that it can be stored in a smaller space has become a problem to be solved.
  • the present application provides a flexible display device, which can solve the problems of excessive bending stress received by the flexible display panel when the flexible display panel is rolled/folded, resulting in the risk of film splitting and cracks, as well as large occupied space.
  • This application provides a flexible display device, including:
  • a display module including a display panel, a protective cover plate and a metal support layer located on both sides of the display panel;
  • An accommodating shell the accommodating shell is formed with a hollow cavity, one side of the accommodating shell is provided with an open channel, the open channel is provided with a chain buckle, the chain buckle is used to connect the display module Split into a first component and a second component, and used to merge the first component and the second component into the display module;
  • An elastic member, a first reel and a second reel are arranged in the hollow cavity, the elastic member is fixed in the hollow cavity, and the first component is connected to one end of the elastic member via the first reel, And the first reel is used for winding or unwinding the first component, the second component is connected with the second reel, and the second reel is used for winding or unwinding the second component;
  • the display module is rolled or unrolled by splitting or merging the chain link, and the radius of the cross section of the first reel is smaller than or equal to the radius of the cross section of the second reel.
  • At least two of the first reels are arranged in parallel and arranged in a staggered arrangement.
  • the radius of the first reel is less than or equal to 1 mm.
  • the contact surface between the display panel and the metal supporting layer is respectively provided with protrusions and recesses, and the protrusions and the recesses match each other.
  • the chain link is connected to the edge of the display module, and when the chain link combines the first component and the second component into the display module, The protrusions and the recesses on the contact surface between the display panel and the metal support layer are in an engaged state, when the chain buckle splits the display module into the first component and In the second assembly, the protrusions and the recesses on the contact surface between the display panel and the metal support layer are in a separated state.
  • the first component includes the protective cover, and the second component includes the display panel and the metal support layer; or, the first component includes the protective cover The board and the display panel, and the second component includes the metal support layer.
  • the flexible display device further includes a handle, the handle is disposed outside the hollow cavity corresponding to the opening channel, and the handle is connected to one end of the display module, the The length/width of the handle is greater than the length/width of the opening channel, and is used to hold the end of the display module in the hollow cavity when the display module is rolled up in the accommodating shell Outside.
  • the elastic member includes a coil spring, and one end of the coil spring is connected to the first extension of the protective cover.
  • the second extension portion of the metal support layer is connected to the second reel.
  • a lock catch is provided at the opening channel, and the lock catch is in a closed state when the display panel is pulled out from the housing shell to a preset length.
  • the lock catch is in an open state.
  • the present application also provides a flexible display device, including:
  • a display module including a display panel, a protective cover plate and a metal support layer located on both sides of the display panel;
  • An accommodating shell the accommodating shell is formed with a hollow cavity, one side of the accommodating shell is provided with an open channel, the open channel is provided with a chain buckle, the chain buckle is used to connect the display module Split into a first component and a second component, and used to merge the first component and the second component into the display module;
  • An elastic member, a first reel and a second reel are arranged in the hollow cavity, the elastic member is fixed in the hollow cavity, and the first component is connected to one end of the elastic member via the first reel, And the first reel is used for winding or unwinding the first component, the second component is connected with the second reel, and the second reel is used for winding or unwinding the second component;
  • the display module is rolled up or unfolded by splitting or merging the chain link.
  • At least two of the first reels are arranged in parallel and arranged in a staggered arrangement.
  • the radius of the first reel is less than or equal to 1 mm.
  • the contact surface between the display panel and the metal supporting layer is respectively provided with protrusions and recesses, and the protrusions and the recesses match each other.
  • the chain link is connected to the edge of the display module, and when the chain link combines the first component and the second component into the display module, The protrusions and the recesses on the contact surface between the display panel and the metal support layer are in an engaged state, when the chain buckle splits the display module into the first component and In the second assembly, the protrusions and the recesses on the contact surface between the display panel and the metal support layer are in a separated state.
  • the first component includes the protective cover, and the second component includes the display panel and the metal support layer; or, the first component includes the protective cover The board and the display panel, and the second component includes the metal support layer.
  • the flexible display device further includes a handle, the handle is disposed outside the hollow cavity corresponding to the opening channel, and the handle is connected to one end of the display module, the The length/width of the handle is greater than the length/width of the opening channel, and is used to hold the end of the display module in the hollow cavity when the display module is rolled up in the accommodating shell Outside.
  • the elastic member includes a coil spring, and one end of the coil spring is connected to the first extension of the protective cover.
  • the second extension portion of the metal support layer is connected to the second reel.
  • a lock catch is provided at the opening channel, and the lock catch is in a closed state when the display panel is pulled out from the housing shell to a preset length.
  • the lock catch is in an open state.
  • the flexible display device provided by the present application changes the traditional single-roller crimping and winding mode, and adopts the method of splitting the display module into different components and separately retracting volume.
  • a plurality of ultra-fine scrolls staggered left and right are introduced into the accommodating shell, so that a larger area display panel is rolled up in the accommodating shell.
  • the number of reels adopts an even number design, so that the display panel exists in the housing shell in an S-shaped winding manner, forming a multi-layer mixed winding mode.
  • This design largely offsets the tensile stress and compressive stress of the component, and reduces the failure of the film layer splitting, cracks and bright lines and dark lines caused by the increase of the local stress of the component, thereby achieving a smaller curl radius.
  • the length of the protective cover is much longer than the length of the display panel, the display panel is not stressed during the unfolding process, and the coil spring actually pulls the protective cover.
  • the protective cover always has a pre-tension force, thereby preventing the unevenness of the display panel after curling, and improving the surface flatness and hardness.
  • FIG. 1 is a schematic diagram of a flexible display device provided by an embodiment of the application when it is unfolded;
  • FIG. 2 is a schematic diagram of the flexible display device provided by an embodiment of the application when it is being wound;
  • FIG. 3 is a schematic diagram of a film layer of a display module provided by an embodiment of the application.
  • FIG. 4 is a schematic cross-sectional view of the contact surface between the first component and the second component according to an embodiment of the application.
  • the present application is directed to the existing flexible display device. There are risks of excessive bending stress on the flexible display panel during winding/folding, resulting in film splitting and cracks, and the technical problem of occupying a large space. This embodiment can Solve the defect.
  • FIG. 1 it is a schematic diagram of the flexible display device provided by an embodiment of the present application when it is unfolded.
  • the flexible display device includes a display module 10, and the display module 10 includes a display panel 12 and a protective cover 13 and a metal support layer 11 respectively located on both sides of the display panel 12.
  • the metal support layer 11 has a preset hardness, and can support the display panel 12 when the display module 10 is unfolded.
  • the display module 10 is an overall stacked structure formed by the metal support layer 11, the display panel 12, and the protective cover 13 stacked in sequence.
  • the display panel 12 includes a flexible OLED display panel, a WOLED display panel, an LCD display panel, a micro-LED display panel (Micro-LED) and the like.
  • the protective cover 13 is a conventional packaging cover, etc., which is not limited here.
  • the flexible display device also includes an accommodating shell 20 formed with a hollow cavity 21 for accommodating the display module 10 when the display module 10 is being rolled;
  • One side of the housing 20 is provided with an open channel 22, the cross-sectional area of the open channel 22 is larger than the cross-sectional area of the display module 10, the display module 10 can be removed from the housing through the open channel 22 20 is pulled out, and is wound into the accommodating shell 20 through the opening channel 22.
  • peripheral edges of the opening channel 22 are designed with rounded corners or other designs that increase smoothness to ensure that the surface of the display module 10 is not scratched.
  • a chain buckle 23 is provided at the opening channel 22 of the accommodating shell 20.
  • the chain buckle 23 is used to split the display module 10 into a first component and a second component, and is also used to separate The first component and the second component are combined into the display module 10.
  • the first component includes the display panel 12 and the protective cover 13
  • the second component includes the metal support layer 11; or, the first component includes the protective cover 13, so The second component includes the display panel 12 and the metal support layer 11.
  • the hollow cavity 21 of the accommodating shell 20 is provided with an elastic member 24, a first reel 25 and a second reel 26, the elastic member 24 is fixed in the hollow cavity 21, and the elastic member One end of 24 is connected to the first extension 131 of the protective cover 13; the second extension 111 of the metal support layer 11 is connected to the second reel 26.
  • the first reel 25 is used to wind up or unwind the first component
  • the second reel 26 is used to wind up or unwind the second component.
  • the radius of the cross section of the first reel 25 is smaller than or equal to the radius of the cross section of the second reel 26.
  • the radius of the cross section of the first reel 25 provided in this embodiment is smaller than that of the first reel 25
  • the radius of the cross section of the second reel 26 also makes the volume of the receiving shell 20 as small as possible.
  • first reels 25 are arranged in parallel and arranged in a staggered arrangement.
  • first reels 25 and one second reel 26 are shown, but not limited to this.
  • the first reel 25 and the second reel 26 may include more than one.
  • the axial direction of the first scroll 25 is perpendicular to the movement direction of the display module 10, and the length of the first scroll 25 in the axial direction is greater than or equal to that of the display module 10. width.
  • the design of the second reel 26 and the first reel 25 are similar, except that the cross-sectional radius of the two is different. Wherein, the cross-sectional radius of each first reel 25 is equal.
  • first reel 25 and the second reel 26 are respectively located on both sides of the hollow cavity 21, and there is a preset distance between them, so as to avoid the first component and the The second component causes interference or frictional scratches.
  • the cross-sectional radius of the first reel 25 is less than or equal to 1 mm, so that within the range of the bending stress of the first component, the space of the housing case 20 is further reduced.
  • the first scroll 25 is designed in a left-right staggered arrangement.
  • the first extension 131 of the protective cover 13 is curled in an S shape. It is wound on two adjacent first reels 25 and connected with the elastic member 24.
  • the elastic member 24 includes but is not limited to a coil spring, and one end of the coil spring is connected to the first extension 131 of the protective cover 13. Since the coil spring actually pulls the protective cover 13, that is, the display panel 12 is not pulled by the coil spring during the unfolding process, so the display panel 12 can be protected. It is not damaged; and because the coil spring has a pretension on the protective cover 13, thereby preventing the uneven surface of the display panel 12 after unfolding or rewinding, and improving the surface flatness and hardness.
  • the second reel 26 may also have a pretension on the metal support layer 11, so that the display module 10 maintains its surface flatness when it is unfolded.
  • FIG. 2 it is a schematic diagram of the flexible display device provided by the embodiment of the present application when being rolled up.
  • the display module 10 can be wound in the receiving shell 20 by the pretension of the coil spring, or can be wound by other means such as external force, which is not limited here.
  • the chain buckle 23 splits the display module 10 into the first component and the second component, and the protective cover 13 and the display panel 12 are combined on the first component.
  • the protective cover 13 and the display panel 12 housed in the accommodating shell 20 are wound in an S shape in the adjacent two On the first reel 25. That is to say, the display panel 12 attached to the protective cover 13 is wound up following the winding of the protective cover 13.
  • the second component formed by the metal support layer 11 is also wound on the second reel 26, wherein the winding/unwinding actions of the first component and the second component are performed simultaneously .
  • the coil spring has a pre-tensioning force on the protective cover plate 13, when the first component is rolled into the accommodating shell 20, the flatness of the surface can also be ensured. The same is true for the second component, which will not be repeated here.
  • the second reel 26 with a larger cross-sectional radius is mainly used for winding the metal support layer 11, and the first reel 25 with a smaller cross-sectional radius is mainly used for the winding station.
  • the protective cover 13 and the display panel 12 are described. Since the metal support layer 11 is mostly a metal material (SUS or amorphous), its modulus is high and it is not a ductile material. Under the same bending radius, the deformation is smaller than that of the first component, and the smaller reel radius affects it Flatness after unfolding. Therefore, in the winding design, this embodiment adopts this mode of separately winding the display panel 12 and the metal support layer 11, and the metal support layer 11 is wound in a single-roller manner.
  • the number of the first reel 25 is an even number, and the cross-sectional radius is not greater than 1 mm. Therefore, the display panel 12 wound in the accommodating case 20 exists in an S shape, forming a multi-layer hybrid winding mode. Since the inner and outer scrolls of the display panel 12 corresponding to each other are wound on the first reel 25 of the same diameter and are subjected to the same/similar tensile and compressive stresses, the stress on the film layer is released, The first component as a whole exhibits more dispersed and smaller stress, so that the display panel 12 can be wound on a thinner reel without film splitting, cracks and brightening caused by increased stress. Line/dark line, etc. are invalid.
  • a handle 30 is provided at one end of the display module 10, and the handle 30 is provided outside the hollow cavity 21 corresponding to the opening channel 22, and the handle 30 is connected to one end of the display module 10 ,
  • the length/width of the handle 30 is greater than the length/width of the opening channel 22, and the handle 30 is convenient for pulling out the display panel 12 wrapped in the accommodating shell 20, and used for When the display module 10 is wound in the receiving shell 20, the end of the display module 10 is clamped on the outside of the hollow cavity 21 to complete the winding.
  • a lock (not shown) is provided at the opening channel 22, and when the display panel 12 is pulled out of the accommodating shell 20 to a preset length (or completely pulled out) 1) The lock catch is in the closed state, so that the first extension 131 and the second extension 111 in the accommodating shell 20 will not continue to be pulled out; when the display module 10 is rolled When the lock catch is in an open state, the display module 10 is wound in the receiving shell 20 by the tension of the coil spring.
  • FIG. 3 it is a schematic diagram of the film layer of the display module provided by the embodiment of this application.
  • the display panel 12 is sandwiched between the protective cover 13 and the metal supporting layer 11.
  • the length of the protective cover 13 is greater than the length of the display panel 12 and the metal support layer 11; the length of the metal support layer 11 is equivalent to the length of the display panel 12, or the metal support
  • the length of the layer 11 is between the lengths of the protective cover 13 and the display panel 12.
  • FIG. 4 it is a schematic cross-sectional view of the contact surface between the first component and the second component according to an embodiment of this application.
  • the display panel 12 is attached to the protective cover 13 to form the first component, the metal supporting layer 11 forms the second component, and the display panel 12 is between the metal supporting layer 11
  • the contact surface of is respectively provided with a protrusion 40 and a recess 50, and the protrusion 40 and the recess 50 match each other.
  • the protrusions 40 and the recesses 50 can be distributed on the entire surface of the contact surface, and can also be distributed on the local position of the contact surface.
  • the number, position, shape and size are not limited, as long as it can be ensured that the first component and the second component can be engaged with each other through the protrusion 40 and the recess 50.
  • the chain buckle 23 is connected to the edge of the display module 10, and the protrusion 40 and the recess 50 are arranged corresponding to the position of the chain buckle 23, when the chain buckle 23 When the first component and the second component are combined into the display module 10 (that is, when the display module is pulled out), the contact surface between the display panel 12 and the metal support layer 11 The protrusion 40 and the recess 50 on the upper part are in the engaged state, so that there is no gap/air bubble between the display panel 12 and the metal support layer 11; when the chain buckle 23 connects the display module 10 When split into the first component and the second component (that is, when the display module is rolled up), the protrusions 40 and the protrusions 40 on the contact surface between the display panel 12 and the metal support layer 11 The recess 50 is in a separated state.
  • the display panel 12 includes a back plate 121 on a side close to the metal supporting layer 11, and the protrusions 40 and the recesses 50 are formed on the surface of the back plate 121 that contacts the metal supporting layer 11.
  • the accommodating shell 20 adopts a circular design in design, but it is not limited in sequence, and other designs may also be used.
  • the flexible display device changes the traditional single-roller curling and winding mode, and adopts the method of splitting the display module into different components to separately wind up.
  • a plurality of ultra-fine scrolls staggered left and right are introduced into the accommodating shell, so that a larger area display panel is rolled up in the accommodating shell.
  • the number of reels adopts an even number design, so that the display panel exists in the housing shell in an S-shaped winding manner, forming a multi-layer mixed winding mode.
  • This design largely offsets the tensile stress and compressive stress of the component, and reduces the failure of the film layer splitting, cracks and bright lines and dark lines caused by the increase of the local stress of the component, thereby achieving a smaller curl radius.
  • the length of the protective cover is much longer than the length of the display panel, the display panel is not stressed during the unfolding process, and the coil spring actually pulls the protective cover.
  • the protective cover always has a pre-tension force, thereby preventing the unevenness of the display panel after curling, and improving the surface flatness and hardness.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种柔性显示装置，包括：显示模组(10)；形成中空腔体(21)的容置壳(20)，容置壳(20)设有开口通道(22)，开口通道(22)处设有链扣(23)，中空腔体(21)内设有弹性构件(24)、第一卷轴(25)及第二卷轴(26)，弹性构件(24)对显示模组(10)形成预拉力；链扣(23)将显示模组(10)拆分为第一组件、第二组件从而分别收卷于第一卷轴(25)与第二卷轴(26)上，还用于将第一组件、第二组件合并为显示模组(10)。

Description

一种柔性显示装置 技术领域
本申请涉及显示技术领域，尤其涉及一种柔性显示装置。
 背景技术
由于柔性显示面板可制备成多种形态，因而备受应用市场青睐。同时，随着人们对视觉享受要求的提高，越来越大的显示屏幕成为了未来市场的发展方向。但是，过大的显示面板及其不利于出门携带以及存放。目前，柔性显示器通常采用显示面板向外折叠或向内折叠的方式对折或者单辊卷曲的形式进行大小屏幕的转换，但是若弯折半径较小或者卷轴直径较小，显示面板会因局部应力过大而出现膜层分裂及裂纹等失效。因此，如何利用柔性显示面板耐弯折等性能，减小收折叠/收卷时的应力，使其存放于更小的空间内，成为了有待解决的问题。
因此，现有技术存在缺陷，急需改进。
 技术问题
本申请提供一种柔性显示装置，能够解决柔性显示面板在收卷/折叠时所受弯曲应力过大而出现膜层分裂及产生裂纹等风险，以及占用空间较大等问题。
 技术解决方案
为解决上述问题，本申请提供的技术方案如下：
本申请提供一种柔性显示装置，包括：
显示模组，所述显示模组包括显示面板以及分别位于所述显示面板两侧的保护盖板和金属支撑层；
容置壳，所述容置壳形成有中空腔体，所述容置壳的一侧设置有开口通道，所述开口通道处设置有链扣，所述链扣用于将所述显示模组拆分为第一组件、第二组件，以及用于将所述第一组件、所述第二组件合并为所述显示模组；
所述中空腔体内设置有弹性构件、第一卷轴以及第二卷轴，所述弹性构件固定于所述中空腔体内，所述第一组件经由所述第一卷轴与所述弹性构件的一端连接，且所述第一卷轴用于收卷或展开所述第一组件，所述第二组件与所述第二卷轴连接，且所述第二卷轴用于收卷或展开所述第二组件；
其中，通过所述链扣的拆分或合并对所述显示模组进行收卷或展开，且所述第一卷轴的横截面的半径小于或等于所述第二卷轴的横截面的半径。
在本申请的柔性显示装置中，至少两所述第一卷轴平行设置并且错位排布。
在本申请的柔性显示装置中，所述第一卷轴的半径小于或等于1mm。
在本申请的柔性显示装置中，所述显示面板与所述金属支撑层之间的接触面分别设置有凸起和凹陷，且所述凸起和所述凹陷相互匹配。
在本申请的柔性显示装置中，所述链扣与所述显示模组的边缘部连接，当所述链扣将所述第一组件和所述第二组件合并为所述显示模组时，所述显示面板与所述金属支撑层之间的接触面上的所述凸起和所述凹陷处于卡合状态，当所述链扣将所述显示模组拆分为所述第一组件和所述第二组件时，所述显示面板与所述金属支撑层之间的接触面上的所述凸起和所述凹陷处于分离状态。
在本申请的柔性显示装置中，所述第一组件包括所述保护盖板，所述第二组件包括所述显示面板和所述金属支撑层；或者，所述第一组件包括所述保护盖板和所述显示面板，所述第二组件包括所述金属支撑层。
在本申请的柔性显示装置中，所述柔性显示装置还包括拉手，所述拉手对应所述开口通道设置于所述中空腔体外，且所述拉手与所述显示模组的一端连接，所述拉手的长度/宽度大于所述开口通道的长度/宽度，用于在所述显示模组收卷于所述容置壳内时将所述显示模组的端部卡持在所述中空腔体外侧。
在本申请的柔性显示装置中，所述弹性构件包括卷簧，所述卷簧的一端与所述保护盖板的第一延伸部相连接。
在本申请的柔性显示装置中，所述金属支撑层的第二延伸部连接至所述第二卷轴上。
在本申请的柔性显示装置中，所述开口通道处设置有锁扣，当所述显示面板由所述容置壳内拉出至预设长度后所述锁扣处于关闭状态，当所述显示模组收卷时，所述锁扣处于打开状态。
为解决上述问题，本申请还提供一种柔性显示装置，包括：
显示模组，所述显示模组包括显示面板以及分别位于所述显示面板两侧的保护盖板和金属支撑层；
容置壳，所述容置壳形成有中空腔体，所述容置壳的一侧设置有开口通道，所述开口通道处设置有链扣，所述链扣用于将所述显示模组拆分为第一组件、第二组件，以及用于将所述第一组件、所述第二组件合并为所述显示模组；
所述中空腔体内设置有弹性构件、第一卷轴以及第二卷轴，所述弹性构件固定于所述中空腔体内，所述第一组件经由所述第一卷轴与所述弹性构件的一端连接，且所述第一卷轴用于收卷或展开所述第一组件，所述第二组件与所述第二卷轴连接，且所述第二卷轴用于收卷或展开所述第二组件；
其中，通过所述链扣的拆分或合并对所述显示模组进行收卷或展开。
在本申请的柔性显示装置中，至少两所述第一卷轴平行设置并且错位排布。
在本申请的柔性显示装置中，所述第一卷轴的半径小于或等于1mm。
在本申请的柔性显示装置中，所述显示面板与所述金属支撑层之间的接触面分别设置有凸起和凹陷，且所述凸起和所述凹陷相互匹配。
在本申请的柔性显示装置中，所述链扣与所述显示模组的边缘部连接，当所述链扣将所述第一组件和所述第二组件合并为所述显示模组时，所述显示面板与所述金属支撑层之间的接触面上的所述凸起和所述凹陷处于卡合状态，当所述链扣将所述显示模组拆分为所述第一组件和所述第二组件时，所述显示面板与所述金属支撑层之间的接触面上的所述凸起和所述凹陷处于分离状态。
在本申请的柔性显示装置中，所述第一组件包括所述保护盖板，所述第二组件包括所述显示面板和所述金属支撑层；或者，所述第一组件包括所述保护盖板和所述显示面板，所述第二组件包括所述金属支撑层。
在本申请的柔性显示装置中，所述柔性显示装置还包括拉手，所述拉手对应所述开口通道设置于所述中空腔体外，且所述拉手与所述显示模组的一端连接，所述拉手的长度/宽度大于所述开口通道的长度/宽度，用于在所述显示模组收卷于所述容置壳内时将所述显示模组的端部卡持在所述中空腔体外侧。
在本申请的柔性显示装置中，所述弹性构件包括卷簧，所述卷簧的一端与所述保护盖板的第一延伸部相连接。
在本申请的柔性显示装置中，所述金属支撑层的第二延伸部连接至所述第二卷轴上。
在本申请的柔性显示装置中，所述开口通道处设置有锁扣，当所述显示面板由所述容置壳内拉出至预设长度后所述锁扣处于关闭状态，当所述显示模组收卷时，所述锁扣处于打开状态。
 有益效果
本申请的有益效果为：相较于现有的柔性显示装置，本申请提供的柔性显示装置，通过改变传统的单辊卷曲收卷模式，采用将显示模组拆分成不同组件的方式分别收卷。在容置壳内引入多个左右交错排列的极细卷轴，使更大面积的显示面板收卷于容置壳内。卷轴个数采用偶数设计，使显示面板以S形缠绕的方式存在于容置壳内，形成多层混合收卷模式。此设计很大程度上抵消了组件受到的拉伸应力和压缩应力，减小了因组件局部应力增大而引起的膜层分裂、裂纹及亮线暗线等失效，从而实现更小的卷曲半径。同时，保护盖板的长度远大于显示面板的长度，显示面板在拉开过程中并未受力，卷簧牵拉的实际是保护盖板。另外，保护盖板始终存在预拉力，从而防止了卷曲后显示面板的不平整问题，提升了表面平整度与硬度。
 附图说明
为了更清楚地说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介绍，显而易见地，下面描述中的附图仅仅是申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例提供的柔性显示装置在展开时的示意图；
图2为本申请实施例提供的柔性显示装置在收卷时的示意图；
图3为本申请实施例提供的显示模组的膜层示意图；
图4为本申请实施例提供的第一组件与第二组件接触面的截面示意图。
 本发明的实施方式
以下各实施例的说明是参考附加的图示，用以例示本申请可用以实施的特定实施例。本申请所提到的方向用语，例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本申请，而非用以限制本申请。在图中，结构相似的单元是用以相同标号表示。
本申请针对现有的柔性显示装置，存在柔性显示面板在收卷/折叠时所受弯曲应力过大而出现膜层分裂及产生裂纹等风险，以及占用空间较大的技术问题，本实施例能够解决该缺陷。
如图1所示，为本申请实施例提供的柔性显示装置在展开时的示意图。所述柔性显示装置包括显示模组10，所述显示模组10包括显示面板12以及分别位于所述显示面板12两侧的保护盖板13和金属支撑层11。其中，所述金属支撑层11具有预设硬度，能够在所述显示模组10展开时起到支撑所述显示面板12的作用。在所述显示模组10处于展开状态时，所述显示模组10为依次层叠设置的所述金属支撑层11、所述显示面板12、所述保护盖板13形成的整体叠构。
其中，所述显示面板12包括柔性OLED显示面板、WOLED显示面板、LCD显示面板、微型LED显示面板（Micro-LED）等。所述保护盖板13为常规的封装盖板等，此处不做限制。
所述柔性显示装置还包括容置壳20，所述容置壳20形成有中空腔体21，在所述显示模组10进行收卷时用于容置所述显示模组10；所述容置壳20的一侧设置有开口通道22，所述开口通道22的截面面积大于所述显示模组10的截面面积，所述显示模组10可以通过所述开口通道22从所述容置壳20内拉出，以及通过所述开口通道22收卷于所述容置壳20内。
其中，所述开口通道22的四周边缘采用圆角设计，或者其他增加光滑度的设计，以保证所述显示模组10的表面不被刮伤。
所述容置壳20的所述开口通道22处设置有链扣23，所述链扣23用于将所述显示模组10拆分为第一组件和第二组件，以及还用于将所述第一组件、所述第二组件合并为所述显示模组10。
其中，所述第一组件包括所述显示面板12和所述保护盖板13，所述第二组件包括所述金属支撑层11；或者，所述第一组件包括所述保护盖板13，所述第二组件包括所述显示面板12和所述金属支撑层11。
所述容置壳20的所述中空腔体21内设置有弹性构件24、第一卷轴25以及第二卷轴26，所述弹性构件24固定于所述中空腔体21内，且所述弹性构件24的一端与所述保护盖板13的第一延伸部131连接；所述金属支撑层11的第二延伸部111连接至所述第二卷轴26上。其中，所述第一卷轴25用于收卷或展开所述第一组件，所述第二卷轴26用于收卷或展开所述第二组件。
其中，所述第一卷轴25的横截面的半径小于或等于所述第二卷轴26的横截面的半径。由于考虑到空间占比的大小，以及所述第一组件与所述第二组件的弯折性能不同，因此，本实施例中提供的所述第一卷轴25的横截面的半径小于所述第二卷轴26的横截面的半径，同时也使得所述容置壳20的体积尽可能的小。
在本实施例中，至少两所述第一卷轴25平行设置并且错位排布。图中仅示意了四个所述第一卷轴25和一个所述第二卷轴26，但并不以此为限，所述第一卷轴25以及所述第二卷轴26可以包括多个。如图中所示，所述第一卷轴25的轴向方向与所述显示模组10的移动方向垂直，且所述第一卷轴25在轴向的长度大于或等于所述显示模组10的宽度。所述第二卷轴26与所述第一卷轴25的设计相似，只是两者的横截面半径不同。其中，各所述第一卷轴25的横截面半径均相等。
另外，所述第一卷轴25与所述第二卷轴26分别位于所述中空腔体21的两侧，且两者之间具有预设距离，以免收卷或展开时所述第一组件与所述第二组件形成干扰或摩擦刮伤。
在一种实施例中，所述第一卷轴25的横截面半径小于或等于1mm，从而在所述第一组件弯曲应力的范围内，将所述容置壳20的空间进一步缩小。
如图中所示，所述第一卷轴25以左右交错排布的方式设计，在所述显示模组10展开后，所述保护盖板13的所述第一延伸部131以S形的卷曲方式绕卷于相邻两所述第一卷轴25上，并且与所述弹性构件24连接。所述弹性构件24包括但不限于卷簧，所述卷簧的一端与所述保护盖板13的所述第一延伸部131相连接。由于所述卷簧牵拉的实际是所述保护盖板13，也就是说所述显示面板12在拉开过程中并未受所述卷簧的牵拉力，因此可保护所述显示面板12不受损伤；又由于所述卷簧对所述保护盖板13存在预拉力，从而防止了展开或收卷后所述显示面板12表面的不平整问题，提升了表面平整度与硬度。
同样的，所述第二卷轴26也可以对所述金属支撑层11存在预拉力，从而使得所述显示模组10展开时保持其表面的平整度。
参照图2所示，为本申请实施例提供的柔性显示装置在收卷时的示意图。所述显示模组10可依靠所述卷簧的预拉力将其收卷于所述容置壳20内，或者依靠其他外力等方式进行收卷，此处不做限制。在收卷时，所述链扣23将所述显示模组10拆分为所述第一组件和所述第二组件，在所述保护盖板13和所述显示面板12组合的所述第一组件的至少一部分收纳于所述容置壳20内时，所述保护盖板13和所述显示面板12收纳于所述容置壳20内的部分呈S形收卷于相邻两所述第一卷轴25上。也就是说，贴合于所述保护盖板13上的所述显示面板12跟随所述保护盖板13的收卷而收卷。与此同时，所述金属支撑层11形成的所述第二组件也收卷于所述第二卷轴26上，其中，所述第一组件与所述第二组件的收卷/展开动作同时进行。
由于所述卷簧对所述保护盖板13具有预拉力，因此，所述第一组件收卷至所述容置壳20内时，也同样能保证表面的平整度。所述第二组件也同理，此处不再赘述。
在本实施例中，具有较大横截面半径的所述第二卷轴26主要用于收卷所述金属支撑层11，具有较小横截面半径的所述第一卷轴25主要用于收卷所述保护盖板13和所述显示面板12。由于所述金属支撑层11多为金属材料（SUS或者非晶），其模量很高且不是延性材料，相同弯折半径下，变形小于所述第一组件，且较小的卷轴半径影响其展开后的平整性。因此，在收卷设计上，本实施例采用这种将所述显示面板12与所述金属支撑层11分开收卷的模式，将所述金属支撑层11以单辊收卷的方式收卷在横截面半径更大的所述第二卷轴26上。这种设计一方面减小了因变形速率不同而引起的所述显示面板12应力增大，另一方面，使更加柔软的所述显示面板12可卷曲在横截面半径更小的所述第一卷轴25上，从而大大节省了收卷空间。
在本实施例中，所述第一卷轴25的个数为偶数个，且为横截面半径不大于1mm的卷轴。因此，收卷于所述容置壳20内的所述显示面板12以S形存在，形成多层混合收卷模式。由于一一对应的内卷和外卷的所述显示面板12因绕卷于相同直径的所述第一卷轴25上而受到相同/相似的拉伸和压缩应力，释放了膜层上的应力，使得所述第一组件整体表现出更分散且更小的应力，从而使所述显示面板12可绕卷于更细的卷轴上而不出现因应力增大而引起的膜层分裂、裂纹及亮线/暗线等失效。
结合图1和图2所示，由于所述开口通道22处设置有所述链扣23，当所述显示模组10向内收卷时，通过所述链扣23处实现拆分；而当所述显示模组10被拉出时，通过所述链扣23处实现合并。此外，所述显示模组10的一端设置有拉手30，所述拉手30对应所述开口通道22设置于所述中空腔体21外，且所述拉手30与所述显示模组10的一端连接，所述拉手30的长度/宽度大于所述开口通道22的长度/宽度，所述拉手30以便于将收卷于所述容置壳20内的所述显示面板12拉出，以及用于在所述显示模组10收卷于所述容置壳20内时将所述显示模组10的端部卡持在所述中空腔体21外侧而完成收卷。
在一种实施例中，所述开口通道22处设置有锁扣（未图示），当所述显示面板12由所述容置壳20内拉出至预设长度后（或完全拉出后）所述锁扣处于关闭状态，从而不会使所述容置壳20内的所述第一延伸部131以及所述第二延伸部111继续被拉出；当所述显示模组10收卷时，所述锁扣处于打开状态，使所述显示模组10通过所述卷簧拉力收卷于所述容置壳20内。
如图3所示，为本申请实施例提供的显示模组的膜层示意图。所述显示面板12夹设于所述保护盖板13与所述金属支撑层11之间。其中，所述保护盖板13的长度大于所述显示面板12以及所述金属支撑层11的长度；所述金属支撑层11的长度与所述显示面板12的长度相当，或者，所述金属支撑层11的长度介于所述保护盖板13与所述显示面板12的长度之间。
如图4所示，为本申请实施例提供的第一组件与第二组件接触面的截面示意图。所述显示面板12贴合于所述保护盖板13上并形成所述第一组件，所述金属支撑层11形成所述第二组件，所述显示面板12与所述金属支撑层11之间的接触面分别设置有凸起40和凹陷50，且所述凸起40和所述凹陷50相互匹配。
其中，所述凸起40和所述凹陷50可分布于所述接触面的整个表面，也可以分布于所述接触面的局部位置，本实施例对所述凸起40和所述凹陷50的数目、位置、形状及大小不做限制，只要能保证所述第一组件与所述第二组件通过所述凸起40和所述凹陷50能够相互卡合即可。
在一种实施例中，所述链扣23与所述显示模组10的边缘部连接，且所述凸起40和所述凹陷50对应所述链扣23的位置设置，当所述链扣23将所述第一组件和所述第二组件合并为所述显示模组10时（即显示模组被拉出时），所述显示面板12与所述金属支撑层11之间的接触面上的所述凸起40和所述凹陷50处于卡合状态，使所述显示面板12与所述金属支撑层11之间没有空隙/气泡；当所述链扣23将所述显示模组10拆分为所述第一组件和所述第二组件时（即显示模组收卷时），所述显示面板12与所述金属支撑层11之间的接触面上的所述凸起40和所述凹陷50处于分离状态。
其中，所述显示面板12包括靠近所述金属支撑层11一侧的背板121，所述凸起40和所述凹陷50制作于所述背板121与所述金属支撑层11接触的表面。
在本实施例中，所述容置壳20在设计上采用圆形设计，但并不依次为限，还可以为其他设计。
综上所述，本申请提供的柔性显示装置，通过改变传统的单辊卷曲收卷模式，采用将显示模组拆分成不同组件的方式分别收卷。在容置壳内引入多个左右交错排列的极细卷轴，使更大面积的显示面板收卷于容置壳内。卷轴个数采用偶数设计，使显示面板以S形缠绕的方式存在于容置壳内，形成多层混合收卷模式。此设计很大程度上抵消了组件受到的拉伸应力和压缩应力，减小了因组件局部应力增大而引起的膜层分裂、裂纹及亮线暗线等失效，从而实现更小的卷曲半径。同时，保护盖板的长度远大于显示面板的长度，显示面板在拉开过程中并未受力，卷簧牵拉的实际是保护盖板。另外，保护盖板始终存在预拉力，从而防止了卷曲后显示面板的不平整问题，提升了表面平整度与硬度。
综上所述，虽然本申请已以优选实施例揭露如上，但上述优选实施例并非用以限制本申请，本领域的普通技术人员，在不脱离本申请的精神和范围内，均可作各种更动与润饰，因此本申请的保护范围以权利要求界定的范围为准。

Claims (20)

  1. 一种柔性显示装置，其包括：
    显示模组，所述显示模组包括显示面板以及分别位于所述显示面板两侧的保护盖板和金属支撑层；
    容置壳，所述容置壳形成有中空腔体，所述容置壳的一侧设置有开口通道，所述开口通道处设置有链扣，所述链扣用于将所述显示模组拆分为第一组件、第二组件，以及用于将所述第一组件、所述第二组件合并为所述显示模组；
    所述中空腔体内设置有弹性构件、第一卷轴以及第二卷轴，所述弹性构件固定于所述中空腔体内，所述第一组件经由所述第一卷轴与所述弹性构件的一端连接，且所述第一卷轴用于收卷或展开所述第一组件，所述第二组件与所述第二卷轴连接，且所述第二卷轴用于收卷或展开所述第二组件；
    其中，通过所述链扣的拆分或合并对所述显示模组进行收卷或展开，且所述第一卷轴的横截面的半径小于或等于所述第二卷轴的横截面的半径。
  2. 根据权利要求1所述的柔性显示装置，其中，至少两所述第一卷轴平行设置并且错位排布，在所述第一组件的至少一部分收纳于所述容置壳内时，所述第一组件呈“S形”曲线收卷于相邻两所述第一卷轴上。
  3. 根据权利要求1所述的柔性显示装置，其中，所述第一卷轴的半径小于或等于1mm。
  4. 根据权利要求1所述的柔性显示装置，其中，所述显示面板与所述金属支撑层之间的接触面分别设置有凸起和凹陷，且所述凸起和所述凹陷相互匹配。
  5. 根据权利要求4所述的柔性显示装置，其中，所述链扣与所述显示模组的边缘部连接，当所述链扣将所述第一组件和所述第二组件合并为所述显示模组时，所述显示面板与所述金属支撑层之间的接触面上的所述凸起和所述凹陷处于卡合状态，当所述链扣将所述显示模组拆分为所述第一组件和所述第二组件时，所述显示面板与所述金属支撑层之间的接触面上的所述凸起和所述凹陷处于分离状态。
  6. 根据权利要求1所述的柔性显示装置，其中，所述第一组件包括所述保护盖板，所述第二组件包括所述显示面板和所述金属支撑层；或者，所述第一组件包括所述保护盖板和所述显示面板，所述第二组件包括所述金属支撑层。
  7. 根据权利要求1所述的柔性显示装置，其中，所述柔性显示装置还包括拉手，所述拉手对应所述开口通道设置于所述中空腔体外，且所述拉手与所述显示模组的一端连接，所述拉手的长度/宽度大于所述开口通道的长度/宽度，用于在所述显示模组收卷于所述容置壳内时将所述显示模组的端部卡持在所述中空腔体外侧。
  8. 根据权利要求1所述的柔性显示装置，其中，所述弹性构件包括卷簧，所述卷簧的一端与所述保护盖板的第一延伸部相连接。
  9. 根据权利要求1所述的柔性显示装置，其中，所述金属支撑层的第二延伸部连接至所述第二卷轴上。
  10. 根据权利要求1所述的柔性显示装置，其中，所述开口通道处设置有锁扣，当所述显示面板由所述容置壳内拉出至预设长度后所述锁扣处于关闭状态，当所述显示模组收卷时，所述锁扣处于打开状态。
  11. 一种柔性显示装置，其包括：
    显示模组，所述显示模组包括显示面板以及分别位于所述显示面板两侧的保护盖板和金属支撑层；
    容置壳，所述容置壳形成有中空腔体，所述容置壳的一侧设置有开口通道，所述开口通道处设置有链扣，所述链扣用于将所述显示模组拆分为第一组件、第二组件，以及用于将所述第一组件、所述第二组件合并为所述显示模组；
    所述中空腔体内设置有弹性构件、第一卷轴以及第二卷轴，所述弹性构件固定于所述中空腔体内，所述第一组件经由所述第一卷轴与所述弹性构件的一端连接，且所述第一卷轴用于收卷或展开所述第一组件，所述第二组件与所述第二卷轴连接，且所述第二卷轴用于收卷或展开所述第二组件；
    其中，通过所述链扣的拆分或合并对所述显示模组进行收卷或展开。
  12. 根据权利要求11所述的柔性显示装置，其中，至少两所述第一卷轴平行设置并且错位排布，在所述第一组件的至少一部分收纳于所述容置壳内时，所述第一组件呈“S形”曲线收卷于相邻两所述第一卷轴上。
  13. 根据权利要求11所述的柔性显示装置，其中，所述第一卷轴的半径小于或等于1mm。
  14. 根据权利要求11所述的柔性显示装置，其中，所述显示面板与所述金属支撑层之间的接触面分别设置有凸起和凹陷，且所述凸起和所述凹陷相互匹配。
  15. 根据权利要求14所述的柔性显示装置，其中，所述链扣与所述显示模组的边缘部连接，当所述链扣将所述第一组件和所述第二组件合并为所述显示模组时，所述显示面板与所述金属支撑层之间的接触面上的所述凸起和所述凹陷处于卡合状态，当所述链扣将所述显示模组拆分为所述第一组件和所述第二组件时，所述显示面板与所述金属支撑层之间的接触面上的所述凸起和所述凹陷处于分离状态。
  16. 根据权利要求11所述的柔性显示装置，其中，所述第一组件包括所述保护盖板，所述第二组件包括所述显示面板和所述金属支撑层；或者，所述第一组件包括所述保护盖板和所述显示面板，所述第二组件包括所述金属支撑层。
  17. 根据权利要求11所述的柔性显示装置，其中，所述柔性显示装置还包括拉手，所述拉手对应所述开口通道设置于所述中空腔体外，且所述拉手与所述显示模组的一端连接，所述拉手的长度/宽度大于所述开口通道的长度/宽度，用于在所述显示模组收卷于所述容置壳内时将所述显示模组的端部卡持在所述中空腔体外侧。
  18. 根据权利要求11所述的柔性显示装置，其中，所述弹性构件包括卷簧，所述卷簧的一端与所述保护盖板的第一延伸部相连接。
  19. 根据权利要求11所述的柔性显示装置，其中，所述金属支撑层的第二延伸部连接至所述第二卷轴上。
  20. 根据权利要求11所述的柔性显示装置，其中，所述开口通道处设置有锁扣，当所述显示面板由所述容置壳内拉出至预设长度后所述锁扣处于关闭状态，当所述显示模组收卷时，所述锁扣处于打开状态。
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CN208014279U (zh) * 2018-04-12 2018-10-26 北京京东方光电科技有限公司 柔性显示面板和柔性显示装置
CN109345960A (zh) * 2018-12-12 2019-02-15 武汉华星光电半导体显示技术有限公司 柔性有机发光显示器及弹簧组件
CN109979329A (zh) * 2019-04-29 2019-07-05 武汉华星光电半导体显示技术有限公司 一种柔性显示装置

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