WO2020237920A1 - 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
WO2020237920A1
WO2020237920A1 PCT/CN2019/106674 CN2019106674W WO2020237920A1 WO 2020237920 A1 WO2020237920 A1 WO 2020237920A1 CN 2019106674 W CN2019106674 W CN 2019106674W WO 2020237920 A1 WO2020237920 A1 WO 2020237920A1
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WO
WIPO (PCT)
Prior art keywords
flexible display
display screen
housing
flexible
film layers
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2019/106674
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English (en)
French (fr)
Inventor
张卓
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Original Assignee
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Application filed by Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority to US16/613,780 priority Critical patent/US11475803B2/en
Publication of WO2020237920A1 publication Critical patent/WO2020237920A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • 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
    • 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
    • G09F9/33—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 being semiconductor devices, e.g. diodes

Definitions

  • the present invention relates to the technical field of display panels, in particular to a flexible display device.
  • OLED has shown its great potential in flexible display. From fixed flexible display to foldable display, the display has both large size and portable characteristics. In order to enable the display screen to further meet the requirements of convenient storage or portability when not in use, the rollable flexible display screen has attracted more and more attention.
  • the OLED display screen needs to be equipped with film layers such as polarizers, touch screens, and protective films, the thickness of the display screen is relatively large, and the curling length of each film layer is different, and the film layers are fixedly connected by an adhesive, so that all The stress of the film layer continues to accumulate during the curling process, causing problems such as film layer separation (peeling), convex deformation (waviness), cracking (crack), etc., making the realization of a rollable display very difficult.
  • film layers such as polarizers, touch screens, and protective films
  • the embodiment of the present invention provides a flexible display device, which can solve the problems of film separation, convex deformation, and breakage caused by the existing display screen when it is rolled.
  • the embodiment of the present invention provides a flexible display device, including a flexible display screen and a plurality of first reels, the flexible display screen including a plurality of groups of flexible film layers corresponding to the plurality of first reels on a one-to-one basis;
  • each group of flexible film layers is connected to its corresponding first reel, so that when the flexible display screen is in a curled state, each group of flexible film layers is curled on its corresponding first reel.
  • the flexible display device further includes a second reel corresponding to the multiple sets of flexible film layers one-to-one;
  • One end of each group of flexible film layers away from the first reel is connected to its corresponding second reel, so that when the flexible display screen is in a curled state, both ends of each group of flexible film layers are respectively curled on its corresponding first reel And on the second scroll.
  • each group of flexible film layers is the same.
  • the flexible display screen includes a backplane protective layer, a display panel, a polarizer, a touch screen, and a protective film layer;
  • the display panel and the polarizer are sequentially attached to the backplane protective layer to form a group of flexible film layers; the protective film layer is attached to the touch screen to form a group of flexible film layers.
  • the flexible display screen includes a backplane protective layer, a display panel, a polarizer, a touch screen, and a protective film layer;
  • the display panel and the polarizer are sequentially attached to the backplane protective layer to form a group of flexible film layers; the touch screen forms a group of flexible film layers; the protective film layer forms a group of flexible film layers .
  • the flexible display device further includes a first housing, and the first reel is provided in the first housing;
  • the first housing is provided with a first opening matching the flexible display screen, so that the flexible display screen is curled into the first housing through the first opening when the flexible display screen is rolled.
  • the flexible display device further includes a hand-held part, and one end of each group of flexible film layers away from the first reel is connected to the hand-held part;
  • the orthographic projection of the handheld portion on the first housing is greater than the orthographic projection of the first opening on the first housing, so that when the flexible display screen is in a curled state, the handheld portion is located at the Outside the first housing.
  • the first housing is also provided with a fixing part, which is used to lock the flexible display screen when the flexible display screen is unfolded, so that the flexible display screen remains unfolded.
  • a fixing part which is used to lock the flexible display screen when the flexible display screen is unfolded, so that the flexible display screen remains unfolded.
  • the flexible display screen is unlocked, so that the flexible display screen is curled in the first housing.
  • control button is further provided on the first housing, and the control button is connected with the fixing part and used for controlling the fixing part to lock or unlock the flexible display screen.
  • the flexible display device further includes a first housing and a second housing, the first reel is provided in the first housing, and the second reel is provided in the second housing;
  • the first housing is provided with a first opening that matches the flexible display screen
  • the second housing is provided with a second opening that matches the flexible display screen, so that when the flexible display screen is located In the curled state, the first housing and the second housing are in contact with each other, and both ends of the flexible display screen are respectively curled on the first housing and the second housing through the first opening and the second opening. Two in the shell.
  • first housing and the second housing are respectively provided with fixing parts for jointly locking the flexible display screen when the flexible display screen is unfolded, so that the flexible display screen is kept unfolded In the state, when the flexible display screen is curled, the flexible display screen is jointly unlocked so that the two ends of the flexible display screen are respectively curled in the first housing and the second housing.
  • first housing and the second housing are respectively provided with control buttons, and the control buttons are connected to the corresponding fixing parts and used to control the corresponding fixing parts to lock or unlock the flexible display screen.
  • the flexible display screen includes multiple groups of flexible film layers, and each group of flexible film layers corresponds to a first reel, so that when the flexible display screen is in a curled state, each group of flexible film layers is independently curled on its corresponding On the first reel, avoid all the film layers on the same reel, thereby reducing the thickness of the film on each reel, reducing the stress of the film on each reel, and avoiding the separation and bulging of the film when the flexible display is curled
  • the problems of deformation and fracture can effectively improve the curling ability of the flexible display screen.
  • FIG. 1 is a schematic diagram of a structure when a flexible display screen in a flexible display device provided by an embodiment of the present invention is in an unfolded state;
  • FIG. 2 is a schematic diagram of a structure when the flexible display screen in the flexible display device is in a rolled state according to an embodiment of the present invention
  • FIG 3 is another schematic diagram of another structure when the flexible display screen in the flexible display device is in an unfolded state according to an embodiment of the present invention
  • FIG. 4 is another schematic diagram of the structure when the flexible display screen in the flexible display device is in a rolled state according to an embodiment of the present invention.
  • FIG. 1 is a schematic structural diagram of a flexible display device provided by an embodiment of the present invention.
  • the flexible display device includes a flexible display screen 1 and a plurality of first reels 2.
  • the flexible display screen 1 includes multiple sets of flexible film layers 11, and multiple sets of flexible film layers 11 and multiple The first reels 1 are arranged in one-to-one correspondence.
  • the flexible film layers in the flexible display screen 1 can be divided into two, three or more groups, and the total thickness of the flexible film layers in each group is as close as possible.
  • the groups of flexible film layers 11 are independent of each other, that is, they are not bonded together by an adhesive.
  • each group of flexible film layers 11 is connected to its corresponding first reel 2.
  • each first reel 2 drives its corresponding flexible film layer to curl through its rotation.
  • each group of flexible film layers 11 is curled on its corresponding first reel 2, as shown in Figure 2;
  • each first reel 2 drives its corresponding The flexible film layer is unfolded.
  • the flexible display screen 1 is in the unfolded state, all the flexible film layers overlap to form the flexible display screen 1, as shown in FIG. 1.
  • the first reel 2 may rotate clockwise or counterclockwise, and the rotation direction of the first reel 2 may be the same or different, which is not specifically limited here.
  • the flexible film layer in the flexible display screen is divided into multiple groups and independently curled to reduce the curling thickness of the film layer, thereby reducing the stress of a single set of film layers, and avoiding film layer separation caused when all the film layers are rolled together. Problems such as bulge deformation and breakage can effectively improve the curling ability of the flexible display screen.
  • a plurality of first reels 2 are arranged in parallel, and when the flexible display screen 1 is in an unfolded state, the multiple first reels 2 are located on the same side of the flexible display screen 1, and each The length of a reel 2 is the same as the width of a corresponding group of flexible film layers 11, and the width of each group of flexible film layers 11 is the length of the side of each group of flexible film layers 11 connected to the first reel 2.
  • the flexible display screen 1 is in a rolled state, all flexible film layers are rolled on the same side.
  • the flexible display device further includes a first housing 3, and the first reel 2 is provided in the first housing 3; and the first housing 3 is provided with The first opening 31 that matches the flexible display screen 1 allows the flexible display screen 1 to be curled into the first housing 3 through the first opening 31 when it is curled.
  • the shape of the first housing 3 may be a rectangular parallelepiped, a plurality of first reels 2 are arranged side by side in the first housing 3, and the first opening 31 is provided in the first housing 3 where the multiple first reels 2 are located.
  • the shape and size of the first opening 31 match the shape and size of the longitudinal section of the flexible display screen 1, that is, the flexible display screen 1 can pass through the first opening 31.
  • one end of each group of flexible film layers 11 is fixedly connected to its corresponding first reel 2.
  • each group of flexible film layers 11 passes through the first opening 31 and stretches , So that each group of flexible film layers 11 are unfolded outside the first housing 3; when the flexible display screen 1 is curled, each group of flexible film layers 11 are curled on the corresponding first reel 2 in the first housing 3 through the first opening 31 .
  • the flexible display device further includes a hand-held part 4, and one end of each group of flexible film layers 11 away from the first reel 2 is connected to the hand-held part 4;
  • the orthographic projection on the first housing 3 is larger than the orthographic projection of the first opening 31 on the first housing 3, so that when the flexible display screen 1 is in a curled state, the handle 4 is located at the first housing 3 A shell 3 outside, as shown in Figure 2.
  • the first reel 2 and the hand-held part 4 are located on opposite sides of the flexible display screen 1, and each group of flexible film layers 11 are connected to the hand-held part 4 to pass through the hand-held part 4. Drive all the flexible film layers 11 to curl or unfold.
  • the hand-held part 4 may be in a strip shape, and the length of the hand-held part 4 is the same as the width of the flexible display screen 1.
  • the width of the flexible display screen 1 is the length of the side where the flexible display screen is connected to the hand-held part.
  • the cross-sectional area of the handle 4 in the direction parallel to the first opening 31 is larger than the area of the first opening 31, so that when the flexible display screen 1 is curled, each group of flexible film layers 11 pass through the first opening 31 and curl on the first housing 3.
  • the hand-held part 4 cannot pass through the first opening 31 and stays outside the first housing 3. The user can stretch the flexible display screen 1 through the hand-held part 4, as shown in FIG.
  • a fixing part (not shown in the figure) is also provided in the first housing 3, which is used to lock the flexible display screen 1 when the flexible display screen 1 is unfolded so that the flexible display screen 1 Keep the unfolded state.
  • the flexible display screen 1 is curled, the flexible display screen 1 is unlocked, and the flexible display screen 1 is curled in the first housing 3.
  • the groups of flexible film layers 11 are not bonded by an adhesive. Therefore, when the flexible display screen 1 is in the unfolded state, the different groups of flexible film layers 11 are relatively fixed by the fixing portion to maintain the unfolded state.
  • a flexible display screen is formed for display; when the flexible display screen 1 is curled, the fixing portion releases the fixing of each group of flexible film layers 11, so that each group of flexible film layers 11 is curled on its corresponding first reel 2.
  • a control button 5 is further provided on the first housing 3, and the control button 5 is connected to the fixed portion and is used to control the fixed portion to lock or unlock the flexible display Screen 1.
  • control button 5 is arranged on the outside of the first housing 3.
  • the user stretches the flexible display screen 1 through the hand-held part 4, and when the flexible display screen 1 is in the unfolded state, presses the control button 5 to control the lock of the fixed part. Tighten the flexible display screen 1 so that the flexible display screen 1 remains unfolded.
  • the control button 5 presses the control button 5 to control the fixing part to unlock the flexible display screen 1 so that the flexible display screen 1 is rolled in the first housing 3.
  • the flexible display device further includes a second reel 6 corresponding to the multiple groups of flexible film layers 11 one-to-one; each group of flexible film layers 11 is away from the first reel One end of 2 is connected to its corresponding second reel 6, so that when the flexible display screen 1 is in a curled state, both ends of each group of flexible film layers 11 are respectively curled on its corresponding first reel 2 and second reel 6 ,As shown in Figure 4.
  • first reels 2 are arranged in parallel and located in a row
  • second reels 6 are arranged in parallel and located in a row.
  • the length of each first reel 2 and second reel 6 is corresponding to the width of a group of flexible film layers 11 the same.
  • the flexible display device further includes a first housing 3 and a second housing 7, the first reel 2 is provided in the first housing 3, and the second reel 6 is provided in the second housing 7.
  • the first housing 3 is provided with a first opening (not shown in the figure) that matches the flexible display 1
  • the second housing 7 is provided with the flexible display 1 The second opening (not shown in the figure), so that when the flexible display screen 1 is in a curled state, the first housing 3 and the second housing 7 are in contact, and both ends of the flexible display screen 1 It is crimped in the first housing 3 and the second housing 7 through the first opening and the second opening, respectively.
  • the shape of the first housing 3 and the second housing 7 may be a rectangular parallelepiped, a plurality of first reels 2 are arranged in parallel in the first housing 3, and a plurality of second reels 6 are arranged in parallel in the second housing 7.
  • the first opening is provided on the side of the first housing 3 parallel to the plane where the first reels 2 are located
  • the second opening is provided on the side of the second housing 7 parallel to the plane where the multiple second reels 6 are located.
  • the shape and size of the first opening match the shape and size of the longitudinal section of the flexible display screen 1, that is, the flexible display screen 1 can pass through the first opening.
  • the shape and size of the second opening match the longitudinal section of the flexible display screen 1.
  • the shape and size of the cross section match, that is, the flexible display screen 1 can pass through the second opening.
  • each group of flexible film layers 11 respectively pass through the first opening and the second opening to be fixedly connected to the corresponding first reel 2 and the second reel 6.
  • each group of flexible film layers 11 is divided into Two parts, respectively passing through the first opening and the second opening, are crimped on the corresponding first reel 2 and the second reel 6, so that the first housing 3 and the second housing 7 are in contact; when the flexible display is unfolded, the first The housing 3 and the second housing 7 are separated, and each group of flexible film layers 11 is driven to stretch to both sides, so that each group of flexible film layers 11 are spread between the first housing 3 and the second housing 7.
  • first housing 3 and the second housing 7 are respectively provided with fixing parts (not shown in the figure), and the two fixing parts are used to lock the flexible display screen when the flexible display screen 1 is unfolded. 1. Keep the flexible display screen 1 in an unfolded state. When the flexible display screen 1 is curled, unlock the flexible display screen 1 so that the flexible display screen 1 is curled on the first housing 3 and the second housing Within 7.
  • first housing 3 is also provided with a first control button (not shown in the figure) connected to its fixed portion
  • second housing 7 is also provided with a second control button (not shown in the figure) connected to its fixed portion Out)
  • first control button and the second control button are respectively used to control their corresponding fixed parts to lock or unlock the flexible display screen 1.
  • the first control button and the second control button are located outside the first housing 3 and the second housing 7 respectively, and the user pulls up the flexible display screen 1 through the first housing 3 and the second housing 7 so that the flexible display screen 1 is in an unfolded state
  • the first control button and the second control button are pressed to control the two fixing parts to lock the flexible display screen 1 and keep the flexible display screen 1 in an unfolded state.
  • the user presses the first control button and the second control button to control the two fixing parts to unlock the flexible display screen 1, so that the flexible display screen 1 is curled on the first housing 3 and the second housing 7. in.
  • the flexible display screen 1 includes a backplane protective layer, a display panel, a polarizer, a touch screen, and a protective film layer.
  • the flexible display screen 1 can be divided into two groups of flexible film layers, three groups of flexible film layers or more groups of flexible film layers, and the total thickness of each group of flexible film layers is as close as possible.
  • the backplane protective layer, the display panel and the polarizer together constitute the first group of flexible film layers, wherein the backplane protective layer, the display panel and the polarizer are bonded together by optical glue, and the backplane protective layer , The display panel and the polarizer are rolled together on the corresponding reel.
  • the touch screen and the protective film layer together constitute a second group of flexible film layers, wherein the touch screen and the protective film layer are bonded together by optical glue, and the touch screen and the protective film layer are rolled together on the corresponding reel.
  • the backplane protective layer, the display panel, and the polarizer together constitute the first group of flexible film layers, wherein the backplane protection layer, the display panel, and the polarizer are bonded together by optical glue, and the backplane protects The layer, the display panel and the polarizer are rolled together on the corresponding reel.
  • the touch screen constitutes the second group of flexible film layers, and the touch screen is individually curled on the corresponding reel.
  • the protective film layer constitutes the third group of flexible film layers, and the protective film layer is individually curled on the corresponding reel.
  • the flexible display device can include multiple sets of flexible film layers, and each set of flexible film layers corresponds to a first reel, so that when the flexible display screen is in a curled state, each group of flexible films The layers are independently curled on the corresponding first reel to avoid all the film layers from curling on the same reel, thereby reducing the thickness of the film on each reel, reducing the film stress on each reel, and avoiding the flexible display when it is curled It causes problems such as separation of film layers, bulging deformation, and breakage, which effectively improves the curling ability of the flexible display screen.

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

一种柔性显示装置，包括柔性显示屏(1)和多个第一卷轴(2)，柔性显示屏(1)包括与多个第一卷轴(2)一一对应的多组柔性膜层(11)；每组柔性膜层(11)的一端与其对应的第一卷轴(2)连接，以在柔性显示屏(1)处于卷曲状态时，每组柔性膜层(11)卷曲在其对应的第一卷轴(2)上。

Description

一种柔性显示装置 技术领域
本发明涉及显示面板技术领域，尤其涉及一种柔性显示装置。
 背景技术
随着柔性显示技术的发展，OLED显示出了其在柔性显示中的巨大潜力。从固定式柔性显示屏，到可折叠显示屏，显示屏同时兼具大尺寸和便携式的特点。为了使显示屏能进一步实现非使用时可方便存放或便携的要求，可卷曲柔性显示屏越来越多引起人们的关注。
但由于OLED显示屏中需要设置偏光片、触摸屏、保护膜材等膜层，因此显示屏的厚度较大，而各膜层的卷曲长度不同，膜层之间又通过粘着剂固定连接，使得所有膜层在卷曲过程中应力不断累计，导致膜层分离（Peeling）、凸起形变（waviness）、断裂（crack）等问题，从而使得可卷曲显示屏的实现难度非常大。
 技术问题
本发明实施例提供一种柔性显示装置，能够解决现有显示屏在卷曲时导致膜层分离、凸起形变、断裂的问题。
 技术解决方案
本发明实施例提供了一种柔性显示装置，包括柔性显示屏和多个第一卷轴，所述柔性显示屏包括与所述多个第一卷轴一一对应的多组柔性膜层；
每组柔性膜层的一端与其对应的第一卷轴连接，以在所述柔性显示屏处于卷曲状态时，每组柔性膜层卷曲在其对应的第一卷轴上。
进一步地，所述柔性显示装置还包括与所述多组柔性膜层一一对应的第二卷轴；
每组柔性膜层远离所述第一卷轴的一端与其对应的第二卷轴连接，以在所述柔性显示屏处于卷曲状态时，每组柔性膜层的两端分别卷曲在其对应的第一卷轴和第二卷轴上。
进一步地，每组柔性膜层的厚度相同。
在一个实施方式中，所述柔性显示屏包括背板保护层、显示面板、偏光片、触摸屏和保护膜层；
所述显示面板和所述偏光片依次贴合在所述背板保护层上，共同构成一组柔性膜层；所述保护膜层贴合在所述触摸屏上，共同构成一组柔性膜层。
在另一个实施方式中，所述柔性显示屏包括背板保护层、显示面板、偏光片、触摸屏和保护膜层；
所述显示面板和所述偏光片依次贴合在所述背板保护层上，共同构成一组柔性膜层；所述触摸屏构成一组柔性膜层；所述保护膜层构成一组柔性膜层。
可选地，所述柔性显示装置还包括第一外壳，所述第一卷轴设置在所述第一外壳内；
所述第一外壳上设有与所述柔性显示屏相匹配的第一开口，以使所述柔性显示屏在卷曲时经所述第一开口卷曲在所述第一外壳内。
进一步地，所述柔性显示装置还包括手持部，每组柔性膜层远离所述第一卷轴的一端与所述手持部连接；
所述手持部在所述第一外壳上的正投影大于所述第一开口在所述第一外壳上的正投影，以在所述柔性显示屏处于卷曲状态时，所述手持部位于所述第一外壳外。
进一步地，所述第一外壳内还设有固定部，用于在所述柔性显示屏展开时，锁紧所述柔性显示屏，使所述柔性显示屏保持展开状态，在所述柔性显示屏卷曲时，解锁所述柔性显示屏，使所述柔性显示屏卷曲在所述第一外壳内。
进一步地，所述第一外壳上还设有控制按钮，所述控制按钮与所述固定部连接，用于控制所述固定部锁紧或解锁所述柔性显示屏。
可选地，所述柔性显示装置还包括第一外壳和第二外壳，所述第一卷轴设置在所述第一外壳内，所述第二卷轴设置在所述第二外壳内；
所述第一外壳上设有与所述柔性显示屏相匹配的第一开口，所述第二外壳上设有与所述柔性显示屏相匹配的第二开口，以在所述柔性显示屏处于卷曲状态时，所述第一外壳和所述第二外壳相接触，所述柔性显示屏的两端分别经所述第一开口和所述第二开口卷曲在所述第一外壳和所述第二外壳内。
进一步地，所述第一外壳和所述第二外壳内还分别设有固定部，用于在所述柔性显示屏展开时，共同锁紧所述柔性显示屏，使所述柔性显示屏保持展开状态，在所述柔性显示屏卷曲时，共同解锁所述柔性显示屏，使所述柔性显示屏的两端分别卷曲在所述第一外壳和第二外壳内。
进一步地，所述第一外壳和所述第二外壳上还分别设有控制按钮，所述控制按钮与对应的固定部连接，用于控制对应的固定部锁紧或解锁所述柔性显示屏。
 有益效果
本发明的有益效果为：柔性显示屏包括多组柔性膜层，且每组柔性膜层对应一个第一卷轴，以在柔性显示屏处于卷曲状态时，每组柔性膜层独立卷曲在其对应的第一卷轴上，避免所有膜层卷曲在同一卷轴上，从而减少每一卷轴上的膜层厚度，减少每一卷轴上的膜层应力，避免柔性显示屏在卷曲时导致膜层分离、凸起形变、断裂的问题，有效提升柔性显示屏的卷曲能力。
 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他的附图。
图1为本发明实施例提供的柔性显示装置中的柔性显示屏处于展开状态时的一种结构示意图；
图2为本发明实施例提供的柔性显示装置中的柔性显示屏处于卷曲状态时的一种结构示意图；
图3为本发明实施例提供的柔性显示装置中的柔性显示屏处于展开状态时的另一种结构示意图；
图4为本发明实施例提供的柔性显示装置中的柔性显示屏处于卷曲状态时的另一种结构示意图。
 本发明的实施方式
以下参考说明书附图介绍本发明的优选实施例，用以举例证明本发明可以实施，这些实施例可以向本领域中的技术人员完整介绍本发明的技术内容，使得本发明的技术内容更加清楚和便于理解。然而本发明可以通过许多不同形式的实施例来得以体现，本发明的保护范围并非仅限于文中提到的实施例。
本发明说明书中使用的术语仅用来描述特定实施方式，而并不意图显示本发明的概念。除非上下文中有明确不同的意义，否则，以单数形式使用的表达涵盖复数形式的表达。在本发明说明书中，应理解，诸如“包括”、“具有”以及“含有”等术语意图说明存在本发明说明书中揭示的特征、数字、步骤、动作或其组合的可能性，而并不意图排除可存在或可添加一个或多个其他特征、数字、步骤、动作或其组合的可能性。附图中的相同参考标号指代相同部分。
参见图1，是本发明实施例提供的柔性显示装置的结构示意图。
如图1所示，本实施例提供的柔性显示装置包括柔性显示屏1和多个第一卷轴2，所述柔性显示屏1包括多组柔性膜层11，且多组柔性膜层11与多个第一卷轴1一一对应地设置。其中，柔性显示屏1中的柔性膜层可以分为两组、三组或更多组，每组柔性膜层的总厚度尽量相近。多组柔性膜层11之间相互独立，即不通过粘着剂粘结在一起。
具体地，每组柔性膜层11的一端与其对应的第一卷轴2连接，在柔性显示屏1卷曲时，每一第一卷轴2通过自转带动其对应的柔性膜层卷曲，在柔性显示屏1处于卷曲状态时，每组柔性膜层11卷曲在其对应的第一卷轴2上，如图2所示；在柔性显示屏1展开时，每一第一卷轴2通过反向自转带动其对应的柔性膜层展开，在柔性显示屏1处于展开状态时，所有柔性膜层重叠，共同构成柔性显示屏1，如图1所示。其中，第一卷轴2可以沿顺时针旋转，也可以沿逆时针旋转，不同第一卷轴2的旋转方向可以相同也可以不同，在此不做具体限定。
本实施例将柔性显示屏中的柔性膜层分为多组分别独立卷曲，以减少膜层的卷曲厚度，进而减少单组膜层的应力，避免所有膜层一起卷曲时导致的膜层分离、凸起形变、断裂等问题，有效提高柔性显示屏的卷曲能力。
在一个实施方式中，如图1所示，多个第一卷轴2平行设置，且在柔性显示屏1处于展开状态时，多个第一卷轴2位于柔性显示屏1的同一侧，每一第一卷轴2的长度与其对应的一组柔性膜层11的宽度相同，每组柔性膜层11的宽度为每组柔性膜层11连接第一卷轴2的一侧的长度。在柔性显示屏1处于卷曲状态时，所有柔性膜层卷曲在同一侧。
进一步地，如图1或图2所示，所述柔性显示装置还包括第一外壳3，所述第一卷轴2设置在所述第一外壳3内；所述第一外壳3上设有与所述柔性显示屏1相匹配的第一开口31，以使所述柔性显示屏1在卷曲时经所述第一开口31卷曲在所述第一外壳3内。
需要说明的是，第一外壳3的形状可以为长方体，多个第一卷轴2并列设置在第一外壳3内，且第一开口31设置在第一外壳3的与多个第一卷轴2所在平面相平行的一侧。第一开口31的形状和大小与柔性显示屏1的纵截面的形状和大小相匹配，即柔性显示屏1可以穿过第一开口31。如图1所示，每组柔性膜层11的一端与其对应的第一卷轴2固定连接，在柔性显示屏1展开时，每组柔性膜层11的另一端穿过第一开口31并拉伸，以使每组柔性膜层11展开在第一外壳3外；在柔性显示屏1卷曲时，每组柔性膜层11通过第一开口31卷曲在第一外壳3内相应的第一卷轴2上。
进一步地，如图1所示，所述柔性显示装置还包括手持部4，每组柔性膜层11远离所述第一卷轴2的一端与所述手持部4连接；所述手持部4在所述第一外壳3上的正投影大于所述第一开口31在所述第一外壳3上的正投影，以在所述柔性显示屏1处于卷曲状态时，所述手持部4位于所述第一外壳3外，如图2所示。
需要说明的是，在柔性显示屏1处于展开状态时，第一卷轴2与手持部4位于柔性显示屏1的相对两侧，每组柔性膜层11与手持部4连接，以通过手持部4带动所有柔性膜层11卷曲或展开。手持部4可以呈条状，且手持部4的长度与柔性显示屏1的宽度相同，柔性显示屏1的宽度为柔性显示屏连接手持部的一侧的长度。手持部4的与第一开口31平行方向上的截面面积大于第一开口31的面积，以在柔性显示屏1卷曲时，每组柔性膜层11穿过第一开口31卷曲在第一外壳3内相应的第一卷轴2上，而手持部4无法穿过第一开口31，留在第一外壳3外，用户可通过手持部4拉伸柔性显示屏1，如图2所示。
进一步地，所述第一外壳3内还设有固定部（图中未示出），用于在所述柔性显示屏1展开时，锁紧所述柔性显示屏1，使所述柔性显示屏1保持展开状态，在所述柔性显示屏1卷曲时，解锁所述柔性显示屏1，使所述柔性显示屏1卷曲在所述第一外壳3内。
需要说明的是，各组柔性膜层11之间未通过粘着剂粘结，因此在柔性显示屏1处于展开状态时，通过固定部将不同组柔性膜层11相对固定，以保持展开状态，共同构成柔性显示屏进行显示；在柔性显示屏1卷曲时，固定部松开对各组柔性膜层11的固定，使各组柔性膜层11卷曲在其对应的第一卷轴2上。
进一步地，如图1所示，所述第一外壳3上还设有控制按钮5，所述控制按钮5与所述固定部连接，用于控制所述固定部锁紧或解锁所述柔性显示屏1。
需要说明的是，控制按钮5设置在第一外壳3的外侧，用户通过手持部4拉伸柔性显示屏1，使柔性显示屏1处于展开状态时，按下控制按钮5，以控制固定部锁紧柔性显示屏1，使柔性显示屏1保持展开状态。在需要卷曲柔性显示屏1时，用户按下控制按钮5，以控制固定部解锁柔性显示屏1，使柔性显示屏1卷曲在第一外壳3中。
在另一个实施方式中，如图3所示，所述柔性显示装置还包括与所述多组柔性膜层11一一对应的第二卷轴6；每组柔性膜层11远离所述第一卷轴2的一端与其对应的第二卷轴6连接，以在所述柔性显示屏1处于卷曲状态时，每组柔性膜层11的两端分别卷曲在其对应的第一卷轴2和第二卷轴6上，如图4所示。
其中，多个第一卷轴2平行设置且位于一列，多个第二卷轴6平行设置且位于一列，每一第一卷轴2和第二卷轴6的长度与其对应的一组柔性膜层11的宽度相同。在柔性显示屏1处于展开状态时，第一卷轴2与第二卷轴6分别位于柔性显示屏1的两端，且分别与柔性显示屏1的两端连接，以在柔性显示屏1卷曲时，第一卷轴2和第二卷轴6同时旋转，带动每组柔性膜层的两端同时卷曲。
进一步地，所述柔性显示装置还包括第一外壳3和第二外壳7，所述第一卷轴2设置在所述第一外壳3内，所述第二卷轴6设置在所述第二外壳7内；所述第一外壳3上设有与所述柔性显示屏1相匹配的第一开口（图中未示出），所述第二外壳7上设有与所述柔性显示屏1相匹配的第二开口（图中未示出），以在所述柔性显示屏1处于卷曲状态时，所述第一外壳3和所述第二外壳7相接触，所述柔性显示屏1的两端分别经所述第一开口和所述第二开口卷曲在所述第一外壳3和所述第二外壳7内。
需要说明的是，第一外壳3和第二外壳7的形状可以为长方体，多个第一卷轴2并列设置在第一外壳3内，多个第二卷轴6并列设置在第二外壳7内，第一开口设置在第一外壳3的与多个第一卷轴2所在平面相平行的一侧，第二开口设置在第二外壳7的与多个第二卷轴6所在平面相平行的一侧。第一开口的形状和大小与柔性显示屏1的纵截面的形状和大小相匹配，即柔性显示屏1可以穿过第一开口，同样，第二开口的形状和大小与柔性显示屏1的纵截面的形状和大小相匹配，即柔性显示屏1可以穿过第二开口。
每组柔性膜层11的两端分别穿过第一开口和第二开口与相应的第一卷轴2和第二卷轴6固定连接，在柔性显示屏1卷曲时，每组柔性膜层11分为两部分，分别穿过第一开口和第二开口卷曲在相应的第一卷轴2和第二卷轴6上，使第一外壳3与第二外壳7相接触；在柔性显示屏展开时，第一外壳3和第二外壳7分离，带动每组柔性膜层11向两侧拉伸，以使每组柔性膜层11展开在第一外壳3和第二外壳7之间。
进一步地，第一外壳3和第二外壳7内还分别设有固定部（图中未示出），两个固定部用于在所述柔性显示屏1展开时，锁紧所述柔性显示屏1，使所述柔性显示屏1保持展开状态，在所述柔性显示屏1卷曲时，解锁所述柔性显示屏1，使所述柔性显示屏1卷曲在所述第一外壳3和第二外壳7内。
进一步地，第一外壳3上还设有与其固定部连接的第一控制按钮（图中未示出），第二外壳7上还设有与其固定部连接的第二控制按钮（图中未示出），第一控制按钮和第二控制按钮分别用于控制其对应的固定部锁紧或解锁所述柔性显示屏1。
其中，第一控制按钮和第二控制按钮分别位于第一外壳3和第二外壳7外侧，用户通过第一外壳3和第二外壳7拉升柔性显示屏1，使柔性显示屏1处于展开状态时，按下第一控制按钮和第二控制按钮，以控制两个固定部锁紧柔性显示屏1，使柔性显示屏1保持展开状态。在需要卷曲柔性显示屏1时，用户按下第一控制按钮和第二控制按钮，以控制两个固定部解锁柔性显示屏1，使柔性显示屏1卷曲在第一外壳3和第二外壳7中。
具体地，所述柔性显示屏1包括背板保护层、显示面板、偏光片、触摸屏和保护膜层。柔性显示屏1可以分为两组柔性膜层、三组柔性膜层或更多组柔性膜层，每组柔性膜层的总厚度尽量相近。
在一个实施方式中，背板保护层、显示面板和偏光片共同构成第一组柔性膜层，其中，背板保护层、显示面板和偏光片通过光学胶贴合在一起，且背板保护层、显示面板和偏光片共同卷曲在相应卷轴上。触摸屏和保护膜层共同构成第二组柔性膜层，其中，触摸屏和保护膜层通过光学胶贴合在一起，且触摸屏和保护膜层共同卷曲在相应卷轴上。
在另一个实施方式中，背板保护层、显示面板和偏光片共同构成第一组柔性膜层，其中，背板保护层、显示面板和偏光片通过光学胶贴合在一起，且背板保护层、显示面板和偏光片共同卷曲在相应卷轴上。触摸屏构成第二组柔性膜层，且触摸屏单独卷曲在相应卷轴上。保护膜层构成第三组柔性膜层，且保护膜层单独卷曲在相应卷轴上。
由上述可知，本实施例提供的柔性显示装置，能够柔性显示屏包括多组柔性膜层，且每组柔性膜层对应一个第一卷轴，以在柔性显示屏处于卷曲状态时，每组柔性膜层独立卷曲在其对应的第一卷轴上，避免所有膜层卷曲在同一卷轴上，从而减少每一卷轴上的膜层厚度，减少每一卷轴上的膜层应力，避免柔性显示屏在卷曲时导致膜层分离、凸起形变、断裂的问题，有效提升柔性显示屏的卷曲能力。
综上所述，虽然本发明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发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。

Claims (12)

  1. 一种柔性显示装置，其中，包括柔性显示屏和多个第一卷轴，所述柔性显示屏包括与所述多个第一卷轴一一对应的多组柔性膜层；
    每组柔性膜层的一端与其对应的第一卷轴连接，以在所述柔性显示屏处于卷曲状态时，每组柔性膜层卷曲在其对应的第一卷轴上。
  2. 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与所述多组柔性膜层一一对应的第二卷轴；
    每组柔性膜层远离所述第一卷轴的一端与其对应的第二卷轴连接，以在所述柔性显示屏处于卷曲状态时，每组柔性膜层的两端分别卷曲在其对应的第一卷轴和第二卷轴上。
  3. 根据权利要求1所述的柔性显示装置，其中，每组柔性膜层的厚度相同。
  4. 根据权利要求1所述的柔性显示装置，其中，所述柔性显示屏包括背板保护层、显示面板、偏光片、触摸屏和保护膜层；
    所述显示面板和所述偏光片依次贴合在所述背板保护层上，共同构成一组柔性膜层；所述保护膜层贴合在所述触摸屏上，共同构成一组柔性膜层。
  5. 根据权利要求1所述的柔性显示装置，其中，所述柔性显示屏包括背板保护层、显示面板、偏光片、触摸屏和保护膜层；
    所述显示面板和所述偏光片依次贴合在所述背板保护层上，共同构成一组柔性膜层；所述触摸屏构成一组柔性膜层；所述保护膜层构成一组柔性膜层。
  6. 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第一外壳，所述第一卷轴设置在所述第一外壳内；
    所述第一外壳上设有与所述柔性显示屏相匹配的第一开口，以使所述柔性显示屏在卷曲时经所述第一开口卷曲在所述第一外壳内。
  7. 根据权利要求6所述的柔性显示装置，其中，所述柔性显示装置还包括手持部，每组柔性膜层远离所述第一卷轴的一端与所述手持部连接；
    所述手持部在所述第一外壳上的正投影大于所述第一开口在所述第一外壳上的正投影，以在所述柔性显示屏处于卷曲状态时，所述手持部位于所述第一外壳外。
  8. 根据权利要求6所述的柔性显示装置，其中，所述第一外壳内还设有固定部，用于在所述柔性显示屏展开时，锁紧所述柔性显示屏，使所述柔性显示屏保持展开状态，在所述柔性显示屏卷曲时，解锁所述柔性显示屏，使所述柔性显示屏卷曲在所述第一外壳内。
  9. 根据权利要求8所述的柔性显示装置，其中，所述第一外壳上还设有控制按钮，所述控制按钮与所述固定部连接，用于控制所述固定部锁紧或解锁所述柔性显示屏。
  10. 根据权利要求2所述的柔性显示装置，其中，所述柔性显示装置还包括第一外壳和第二外壳，所述第一卷轴设置在所述第一外壳内，所述第二卷轴设置在所述第二外壳内；
    所述第一外壳上设有与所述柔性显示屏相匹配的第一开口，所述第二外壳上设有与所述柔性显示屏相匹配的第二开口，以在所述柔性显示屏处于卷曲状态时，所述第一外壳和所述第二外壳相接触，所述柔性显示屏的两端分别经所述第一开口和所述第二开口卷曲在所述第一外壳和所述第二外壳内。
  11. 根据权利要求10所述的柔性显示装置，其中，所述第一外壳和所述第二外壳内还分别设有固定部，用于在所述柔性显示屏展开时，共同锁紧所述柔性显示屏，使所述柔性显示屏保持展开状态，在所述柔性显示屏卷曲时，共同解锁所述柔性显示屏，使所述柔性显示屏的两端分别卷曲在所述第一外壳和第二外壳内。
  12. 根据权利要求11所述的柔性显示装置，其中，所述第一外壳和所述第二外壳上还分别设有控制按钮，所述控制按钮与对应的固定部连接，用于控制对应的固定部锁紧或解锁所述柔性显示屏。
PCT/CN2019/106674 2019-05-27 2019-09-19 一种柔性显示装置 Ceased WO2020237920A1 (zh)

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