WO2019140654A1 - 柔性显示面板及柔性显示装置 - Google Patents

柔性显示面板及柔性显示装置 Download PDF

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Publication number
WO2019140654A1
WO2019140654A1 PCT/CN2018/073498 CN2018073498W WO2019140654A1 WO 2019140654 A1 WO2019140654 A1 WO 2019140654A1 CN 2018073498 W CN2018073498 W CN 2018073498W WO 2019140654 A1 WO2019140654 A1 WO 2019140654A1
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WO
WIPO (PCT)
Prior art keywords
display panel
flexible display
flexible
buffer portion
disposed
Prior art date
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PCT/CN2018/073498
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English (en)
French (fr)
Inventor
张祖强
邱昌明
张盛鹉
Original Assignee
深圳市柔宇科技有限公司
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 深圳市柔宇科技有限公司 filed Critical 深圳市柔宇科技有限公司
Priority to PCT/CN2018/073498 priority Critical patent/WO2019140654A1/zh
Priority to CN201880083235.8A priority patent/CN111742358A/zh
Publication of WO2019140654A1 publication Critical patent/WO2019140654A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a flexible display panel and a flexible display device.
  • the flexible display device is made of a flexible material, which is capable of bending and bending.
  • the flexible display device has the characteristics of light weight, small volume, and the like, and has wide application prospects.
  • the flexible display device generally first fixes the flexible substrate on the glass substrate, and then performs the flexible display panel manufacturing process. After the flexible display panel is completed, the flexible substrate is separated from the glass substrate, and then formed on the back surface of the flexible substrate.
  • the backing film planarizes the flexible substrate, and then cuts it, and finally performs a process such as COF (Chip On Film) bonding.
  • COF Chip On Film
  • the back film usually has a certain thickness and hardness, which is disadvantageous for bending the flexible display panel.
  • an embodiment of the present invention discloses a flexible display panel and a flexible display device that are easy to bend.
  • a flexible display panel includes a flexible substrate, a back plate, a display layer, a back film, and an adhesive layer.
  • the back plate is disposed on the flexible substrate, and the display layer is disposed on the back plate away from the flexible substrate.
  • the back film is attached to a side of the flexible substrate away from the back plate by the adhesive layer, and the adhesive layer includes a first buffer portion for buffering and bending the flexible display The stress generated by the backing film when the panel is used.
  • the first buffer portion includes a through hole penetrating the adhesive layer.
  • the flexible display panel further includes a flexible filler accommodated in the first buffer portion.
  • the back film includes a second buffer portion, and the second buffer portion is disposed corresponding to the first buffer portion.
  • the second buffer portion includes a plurality of spaced apart first trenches.
  • the flexible substrate includes a first surface and a second surface disposed opposite to each other, the back plate is disposed on the first surface, and the back film is attached to the flexible substrate through the adhesive layer And a second surface, the back film includes oppositely disposed third surfaces and a fourth surface, the third surface is disposed adjacent to the bonding layer, and the plurality of the first grooves are formed on the third surface.
  • the second buffer portion further includes a plurality of spaced apart second grooves formed on the fourth surface, the openings of the second grooves being disposed away from the back plate.
  • the flexible substrate includes a first surface and a second surface disposed opposite to each other, the back plate is disposed on the first surface, and the back film is attached to the flexible substrate through the adhesive layer And a second surface, the back film includes oppositely disposed third surfaces and a fourth surface, the third surface is disposed adjacent to the bonding layer, and the plurality of the first grooves are formed on the fourth surface.
  • the flexible display panel further includes an encapsulation layer, and the encapsulation layer is disposed on the display layer.
  • the flexible display panel defines a bendable region according to a pre-designed position to be bent, and the first buffer portion is correspondingly disposed at a position corresponding to the bendable region of the adhesive layer.
  • the flexible display panel further includes a display area, a non-display area, the display area is connected to the non-display area, the display layer is distributed in the display area, and the bendable area is located in the Non-display area and/or display area.
  • a flexible display device comprising a flexible display panel as described above.
  • the first buffer portion is disposed on the adhesive layer, the stress generated by the back film when the flexible display panel is bent is effectively buffered, so that the flexible display panel is easily bent.
  • the back film is provided with a second buffer portion corresponding to the first buffer portion, which further facilitates bending of the flexible display panel.
  • FIG. 1 is a partial cross-sectional view of a flexible display panel according to a first embodiment of the present invention.
  • FIG. 2 is a partial cross-sectional view of a flexible display panel according to a second embodiment of the present invention.
  • FIG 3 is a partial cross-sectional view of a flexible display panel according to a third embodiment of the present invention.
  • FIG. 4 is a partial cross-sectional view of a flexible display panel according to a fourth embodiment of the present invention.
  • Fig. 5 is a partial cross-sectional view showing a flexible display panel according to a fifth embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a flexible display device according to an embodiment of the present invention.
  • a first embodiment of the present invention provides a flexible display panel 10.
  • the flexible display panel 10 includes a flexible substrate 11 , a backplane 13 , a display layer 15 , a back film 17 , and an adhesive layer 18 .
  • the back plate 13 is disposed on the flexible substrate 11 .
  • the display layer 15 is disposed on a side of the back plate 13 away from the flexible substrate 11.
  • the back film 17 is attached to the side of the flexible substrate 11 away from the back plate 13 by the adhesive layer 18.
  • the adhesive layer 18 includes a first buffer portion 181. The stress generated by the back film 17 when the flexible display panel 10 is bent is buffered.
  • the flexible display panel 10 further includes a display area 101 and a non-display area 103.
  • the non-display area 103 is disposed around the display area 101.
  • the flexible substrate 11 includes a first surface 111 and a second surface 113 disposed opposite to each other.
  • the back plate 13 is disposed on the first surface 111
  • the display layer 15 is disposed on a side of the back plate 13 away from the bonding layer 18.
  • the back film 17 is attached to the second surface 113 of the flexible substrate 11 through the adhesive layer 18. In other words, the back film 17, the adhesive layer 18, the flexible substrate 11, the back sheet 13, and the display layer 15 are laminated in this order.
  • the backing plate 13 is an array substrate including a gate, a gate insulating layer, a source, an active layer, a drain, and the like.
  • the display layer 15 is formed on the backplane 13.
  • the display layer 15 is an OELD display layer.
  • the display layer 15 may be a display layer formed by other display media, such as a liquid crystal display layer.
  • the display layer 15 is located at a position on the back panel 13 corresponding to the display area 101.
  • the back film 17 is attached to the second surface 113 through the adhesive layer 18 for planarizing the flexible substrate 11, and for supporting and protecting the flexible substrate 11, the back sheet 13, the display layer 15, and the like.
  • the adhesive layer 18 includes a first buffer portion 181 for buffering stress generated by the back film 17 when the flexible display panel 10 is bent, so that the flexible display panel 10 is easily bent.
  • the flexible display panel 10 defines at least one bendable region 105 according to a pre-designed position to be bent.
  • the first buffer portion 181 is at least one corresponding to the bendable portion of the adhesive layer 18 .
  • the position of the folded area 105 is not limited to a pre-designed position to be bent.
  • the first buffer portion 181 is a through hole penetrating the adhesive layer 18, thereby increasing the space for releasing the stress of the back film 17 at the position of the bendable region 105, so that the flexible display panel 10 is in the The bendable region 105 is easily bent.
  • a flexible substrate 11 made of a flexible material is formed by coating a flexible material solution on a rigid substrate, and a structure of the back plate 13, the display layer 15, and the like is formed over the first surface 111 of the flexible substrate 11. Thereafter, the flexible substrate 11 is peeled off from the rigid substrate, and the back film 17 is attached to the second surface 113 of the flexible substrate 11 through the adhesive layer 18 having a specific pattern.
  • the adhesive layer 18 is provided with a through hole according to the position of the bendable region 105, thereby forming the specific pattern.
  • the flexible substrate 11 can be a flexible film, and the flexible film is attached to the rigid substrate, and then the back plate 13, the display layer 15 and the like are formed on the flexible substrate 11.
  • the flexible substrate 11 on which the back sheet 13 and the display layer 15 are formed is peeled off from the rigid substrate.
  • the flexible material solution and the flexible film may be composed of a polymer material such as polyethylene terephthalate, polyaryl ether sulfone, polyethylene naphthalate or polyimide; or It is made of metal materials such as copper, silver and stainless steel.
  • the present invention does not specifically limit the material of the flexible substrate, and no matter what material is selected (including all flexible materials that can be used as a flexible substrate in the prior art), it has a certain stretchability to form flexibility. Substrate. In the specific preparation process, it is necessary to select a flexible material that meets the stretchability requirements according to the actual needs of the display panel.
  • the first buffer portion 181 is a through hole penetrating the adhesive layer 18, the space for releasing the stress of the back film 17 is increased, thereby effectively buffering the stress generated by the back film 17 when the flexible display panel 10 is bent, and the flexible display panel 100 is bent. fold. Further, since the portion of the back film 17 at the bendable region 105 is not fixed, the bending of the flexible display panel 10 is further facilitated.
  • the bendable region 105 is located in the non-display area 103, and is set according to a position at which the flexible display panel 10 is designed to be bent.
  • a glue is applied on the second surface 113 to form a patterned adhesive layer 18.
  • the first buffer portion 181 may be formed on the adhesive layer 18 by cutting.
  • the first buffer portion 181 may include a plurality of through holes, and the first buffer portion 181 may be provided with a groove, for example, a groove that is not open to the adhesive layer 18 opening toward the back film 17. Or the first buffer portion 181 includes a plurality of grooves that open toward the back film 17.
  • the flexible display panel 10 further includes an encapsulation layer 19.
  • the encapsulation layer 19 covers the display layer 15 and the back plate 13 for preventing oxygen and moisture from entering the inside of the flexible display panel 10, and prolonging the service life of the flexible display panel 10.
  • a second embodiment of the present invention provides a flexible display panel 30.
  • the flexible display panel 30 is similar in structure to the flexible display panel 10 provided by the first embodiment, except that the flexible display panel 30 further includes a flexible filler 383 that is received in the first buffer portion 381 of the adhesive layer 38.
  • the flexible filler 383 can buffer the stress generated by the back film 37 when the flexible display panel 30 is bent, which facilitates the bending of the flexible display panel 30.
  • the flexible display panel 30 includes a display area 301, a non-display area 303, and a bendable area 305.
  • the display area 301 is connected to the non-display area 303, and the bendable area 305 is located in the non-display area 303.
  • the first buffer portion 381 and the flexible filler 383 housed in the first buffer portion 381 are disposed corresponding to the bendable region 305.
  • a third embodiment of the present invention provides a flexible display panel 50.
  • the flexible display panel 50 is similar in structure to the flexible display panel 10 provided by the first embodiment.
  • the flexible display panel 50 includes a flexible substrate 51, a back plate 53, a display layer 55, a back film 57, and an adhesive layer 58.
  • the flexible substrate 51 includes relative arrangements.
  • the first surface 511 and the second surface 513, the back plate 53 is disposed on the first surface 511, and the display layer 55 is disposed on a side of the back plate 53 away from the adhesive layer 58.
  • the back film 57 is attached to the second surface 513 through the adhesive layer 58.
  • the adhesive layer 58 includes a first buffer portion 581 for buffering the stress generated by the back film 57 when the flexible display panel 50 is bent.
  • the first buffer portion 581 is a through hole penetrating the adhesive layer 58.
  • the flexible display panel 50 is different from the flexible display panel 10 in that the back film 57 further includes a second buffer portion 573, and the second buffer portion 573 is disposed corresponding to the first buffer portion 581 of the adhesive layer 58 for facilitating the bending of the back film 17. Deformation.
  • the second buffer portion 573 includes a plurality of spaced apart first trenches 575, thereby forming a plurality of teeth 577.
  • the opening of the first trench 575 is disposed toward the bonding layer 58 and the backing plate 53.
  • the first buffer portion 581 and the second buffer portion 781 are provided corresponding to the bendable region 705.
  • the back film 57 includes a third surface 578 and a fourth surface 579 disposed opposite to each other.
  • the third surface 578 is disposed adjacent to the adhesive layer 58 of the flexible display panel 50, and the plurality of first trenches 575 are formed on the third surface. 578, the opening of the first trench 575 is disposed toward the bonding layer 58.
  • the second buffer portion 573 is provided with a plurality of first grooves 575, the second buffer portion 573 is easily deformed along with the bending of the back film 57, which facilitates the bending of the flexible display panel 50 and The stress generated when the back film 57 is bent is released. Further, since the first buffer portion 581 of the adhesive layer 58 is disposed corresponding to the second buffer portion 573 of the back film 57, the first buffer portion 581 can buffer the stress generated by the back film 57 when the flexible display panel 50 is bent, which is further convenient. The flexible display panel 50 is bent. Moreover, since the portion of the second buffer portion 573 is not fixed, the bending of the flexible display panel 50 is facilitated.
  • the number of the first grooves 575 of the second buffer portion 573 may be one.
  • the second buffer portion 573 may be disposed as a recess that is disposed toward the first buffer portion 581 and does not penetrate the back film 57. groove.
  • the back film 57 is patterned to form the second buffer portion 573.
  • the patterning of the back film 57 can be carried out by using a mold or forming, and then performing processes such as imprinting, laser etching, or through a semiconductor process to produce a desired pattern and shape.
  • the flexible display panel 50 includes a display area 501, a non-display area 503, and a bendable area 505.
  • the display area 501 is connected to the non-display area 503, and the bendable area 505 is located in the non-display area 503, and the bendable area 505
  • the first buffer portion 581 and the second buffer portion 573 are disposed at positions corresponding to the bendable region 505 according to a position at which the pre-designed flexible display panel 50 is to be bent.
  • a fourth embodiment of the present invention provides a flexible display panel 70.
  • the flexible display panel 70 is similar in structure to the flexible display panel 50 provided by the third embodiment.
  • the adhesive layer 78 includes a first buffer portion 781
  • the back film 77 includes a second buffer portion 773 corresponding to the first buffer portion 781.
  • the portion 773 includes a plurality of spaced apart first grooves 775
  • the back film 77 includes oppositely disposed third surfaces 778 and fourth surfaces 779, wherein a plurality of spaced apart first grooves 775 are formed in the back film 77.
  • the fourth surface 779 in other words, the opening of the first groove 775 is disposed on a side of the back film 77 away from the adhesive layer 78 of the flexible display panel 70.
  • the second buffer portion 773 includes a plurality of spaced apart first grooves 775, when the flexible display panel 70 is bent, the second buffer portion 773 is easily deformed along with the bending of the back film 77, which is advantageous for the flexible display panel 70. The stress generated when the bending of the back film 77 is bent is released.
  • the flexible display panel 70 includes a display area 701, a non-display area 703, and a bendable area 705.
  • the display area 701 is connected to the non-display area 703, and the bendable area 705 is located in the non-display area 703.
  • the bendable region 705 is disposed according to a position at which the pre-designed flexible display panel 70 is to be bent, and the first buffer portion 781 and the second buffer portion 773 are both disposed at positions corresponding to the bendable region 705.
  • the number of the first grooves 775 of the second buffer portion 773 may be one.
  • the second buffer portion 773 may be disposed as a recess whose opening is away from the first buffer portion 781 and does not penetrate the back film 77. groove.
  • the back film 77 is patterned to form the second buffer portion 773.
  • the patterning of the back film 77 can be carried out by using a mold or forming, and then performing processes such as imprinting, laser etching, or through a semiconductor process to produce a desired pattern and shape.
  • a fifth embodiment of the present invention provides a flexible display panel 90.
  • the flexible display panel 90 is similar in structure to the flexible display panel 50 provided by the third embodiment.
  • the flexible substrate 91 of the flexible display panel 90 includes a first surface 911 and a second surface 913 disposed opposite to each other.
  • the back film 97 passes through the adhesive layer 98 and the first layer.
  • the second surface 913 is connected, the adhesive layer 98 includes a first buffer portion 981, and the back film 97 includes a third surface 971 and a fourth surface 973 disposed opposite to each other.
  • the third surface 971 is disposed adjacent to the adhesive layer 98, and the back film 97 is further disposed.
  • the second buffer portion 974 includes a first buffer portion 981 corresponding to the adhesive layer 98, and the second buffer portion 974 includes a plurality of first trenches 975 and a plurality of second trenches 977.
  • a plurality of first trenches 975 are formed at intervals on the third surface 971, and openings of the first trenches 975 are disposed toward the bonding layer 98.
  • a plurality of second trenches 977 are formed at intervals on the fourth surface 973.
  • the flexible display panel 90 includes a display area 901 and a non-display area 903.
  • the display layer 95 of the flexible display panel 90 is distributed on the display area 901.
  • the flexible display panel 90 further includes a bendable area 905, and the bendable area 905 is located at the The display area 901 is described.
  • the bendable region 905 is disposed according to a position at which the pre-designed flexible display panel 90 is to be bent, and the first buffer portion 981 and the second buffer portion 974 are disposed corresponding to the bendable region 905.
  • bendable region in any of the foregoing embodiments may also be disposed in the display area and in the non-display area.
  • the present invention further provides a flexible display device 100 including a flexible display panel, the flexible display panel 10 provided by the first embodiment, the flexible display panel 30 provided by the second embodiment,
  • the third embodiment provides one of the flexible display panel 50, the flexible display panel 70 provided by the fourth embodiment, and the flexible display panel 90 provided by the fifth embodiment.
  • the flexible display device 100 can be an electronic device with a display function such as a television, a display, a notebook computer, a mobile phone, a tablet computer, or a reader. It can be understood that the flexible display device 100 further includes other necessary or unnecessary structures, such as a frame decorated on the flexible display panel, and details are not described herein.

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Abstract

本发明公开一种柔性显示面板，其包括柔性基板、背板、显示层、背膜及粘结层，所述背板设于所述柔性基板上，所述显示层设于所述背板远离所述柔性基板的一侧，所述背膜通过所述粘结层贴附于所述柔性基板远离所述背板的一侧，所述粘结层包括第一缓冲部，用以缓冲弯折所述柔性显示面板时所述背膜产生的应力。本发明还公开一种具该柔性显示面板的柔性显示装置。

Description

柔性显示面板及柔性显示装置 技术领域
本发明涉及显示技术领域，特别涉及一种柔性显示面板及柔性显示装置。
背景技术
柔性显示装置是由柔性材料制成，其能够进行弯折绕曲，此外，柔性显示装置还具备重量轻、体积小等特点，具有广泛的应用前景。柔性显示装置在制作时一般先将柔性基板固定在玻璃基板上，再进行之后的柔性显示面板制作工艺，柔性显示面板制作完成后再将柔性基板与玻璃基板分离，之后再在柔性基板的背面形成背膜使柔性基板平整化，再之后进行切割，最后再进行覆晶薄膜(COF，Chip On Film)绑定等工艺。然而，背膜通常具一定厚度及硬度，不利于柔性显示面板弯折。
发明内容
为解决上述问题，本发明实施例公开一种易弯折的柔性显示面板及柔性显示装置。
一种柔性显示面板，包括柔性基板、背板、显示层、背膜及粘结层，所述背板设于所述柔性基板上，所述显示层设于所述背板远离所述柔性基板的一侧，所述背膜通过所述粘结层贴附于所述柔性基板远离所述背板的一侧，所述粘结层包括第一缓冲部，用以缓冲弯折所述柔性显示面板时所述背膜产生的应力。
进一步地，所述第一缓冲部包括贯穿所述粘结层的通孔。
进一步地，所述柔性显示面板还包括柔性填充物，所述柔性填充物容纳于所述第一缓冲部。
进一步地，所述背膜包括第二缓冲部，所述第二缓冲部对应所述第一缓冲部设置。
进一步地，所述第二缓冲部包括多个间隔设置的第一沟槽。
进一步地，所述柔性基板包括相对设置的第一表面及第二表面，所述背板设于所述第一表面，所述背膜通过所述粘结层贴附于所述柔性基板的第二表面， 所述背膜包括相对设置的第三表面及第四表面，所述第三表面与所述粘结层相邻设置，多个所述第一沟槽形成于所述第三表面。
进一步地，所述第二缓冲部还包括形成于所述第四表面的多个间隔设置的第二沟槽，所述第二沟槽的开口背离所述背板设置。
进一步地，所述柔性基板包括相对设置的第一表面及第二表面，所述背板设于所述第一表面，所述背膜通过所述粘结层贴附于所述柔性基板的第二表面，所述背膜包括相对设置的第三表面及第四表面，所述第三表面与所述粘结层相邻设置，多个所述第一沟槽形成于所述第四表面。
进一步地，所述柔性显示面板还包括封装层，所述封装层设于所述显示层上。
进一步地，所述柔性显示面板根据预先设计的需弯折的位置而定义有可弯折区域，所述第一缓冲部相应设置于所述粘结层的对应所述可弯折区域的位置。
进一步地，所述柔性显示面板还包括显示区、非显示区，所述显示区与所述非显示区连接设置，所述显示层分布于所述显示区域，所述可弯折区域位于所述非显示区和/或显示区。
一种柔性显示装置，所述柔性显示装置包括如上所述的柔性显示面板。
本发明提供的柔性显示面板及柔性显示装置，由于所述粘结层设第一缓冲部，有效缓冲了弯折所述柔性显示面板时所述背膜产生的应力，使柔性显示面板容易弯折。另外，所述背膜对应所述第一缓冲部设置第二缓冲部，进一步有利于所述柔性显示面板的弯折。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例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他的附图。
图1为本发明第一实施方式提供的柔性显示面板的部分剖视图。
图2为本发明第二实施方式提供的柔性显示面板的部分剖视图。
图3为本发明第三实施方式提供的柔性显示面板的部分剖视图。
图4为本发明第四实施方式提供的柔性显示面板的部分剖视图。
图5为本发明第五实施方式提供的柔性显示面板的部分剖视图。
图6为本发明实施方式提供的柔性显示装置示意图。
具体实施方式
下面将结合本发明实施例中的附图，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做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
请参阅图1，本发明第一实施方式提供一种柔性显示面板10。柔性显示面板10包括柔性基板(Flexible substrate)11、背板(Backplane)13、显示层15、背膜(Back film)17及粘结层(Adhesive)18，背板13设于柔性基板11上，显示层15设于背板13远离柔性基板11的一侧，背膜17通过粘结层18贴附于柔性基板11远离背板13的一侧，粘结层18包括第一缓冲部181，用以缓冲弯折柔性显示面板10时背膜17产生的应力。
在一具体实施例中，柔性显示面板10还包括显示区101及非显示区103。非显示区103环绕显示区101设置。
进一步地，柔性基板11包括相对设置的第一表面111及第二表面113，背板13设于第一表面111上，显示层15设于背板13远离粘结层18的一侧。背膜17通过粘结层18贴附于柔性基板11的第二表面113。换句话说，背膜17、粘结层18、柔性基板11、背板13及显示层15依次层叠设置。
本实施方式中，背板13为阵列基板，其包括栅极、栅极绝缘层、源极、有源层、漏极等结构。
显示层15形成于背板13上，本实施方式中，显示层15为OELD显示层，在其他实施例中，显示层15可以为其他显示介质形成的显示层，例如为液晶显示层等。显示层15位于背板13上的对应显示区101的位置。
背膜17通过粘结层18贴附于第二表面113，用于使柔性基板11平整化， 以及用于支撑及保护柔性基板11、背板13、显示层15等结构。
粘结层18包括第一缓冲部181，用以缓冲弯折柔性显示面板10时背膜17产生的应力，以使柔性显示面板10容易弯折。其中，柔性显示面板10根据预先设计的需弯折的位置而定义有至少一个可弯折区域105，第一缓冲部181为至少一个，相应设置于所述粘结层18的对应所述可弯折区域105的位置。
本实施方式中，第一缓冲部181为一贯穿粘结层18的通孔，进而在可弯折区域105的位置增加了背膜17释放应力的空间，而使得所述柔性显示面板10在所述可弯折区域105易于弯折。
在制造时，通过在一刚性基板上涂覆柔性材料溶液经烘干后形成所述柔性材料构成的柔性基板11，在柔性基板11的第一表面111上方形成背板13、显示层15等结构后，将柔性基板11从所述刚性基板上剥离，再通过具有特定图案的粘结层18将背膜17贴附于柔性基板11的第二表面113上。其中，粘结层18根据可弯折区域105的位置而设置有通孔，从而形成了所述特定图案。可以理解，在另一实施例中，柔性基板11可为一柔性薄膜，将所述柔性薄膜贴附在所述刚性基板上，再在柔性基板11上形成背板13、显示层15等结构后，将形成有背板13、显示层15的柔性基板11从所述刚性基板上剥离。所述柔性材料溶液与所述柔性薄膜可以选用由聚对苯二甲酸乙二酯、聚芳醚砜、聚萘二甲酸乙二酯、聚酰亚胺等高分子材料构成；或者，由铝、铜、银、不锈钢等金属材料构成。需要说明的是，本发明并不对柔性基板的材料作具体限定，无论选择何种材料(包括现有技术中的所有可用作柔性基板的柔性材料)，其具备一定的伸展性，才能形成柔性基板。而在具体地制备过程中，就需要根据对显示面板的实际需求，选择满足伸展性要求的柔性材料。
由于第一缓冲部181为一贯穿粘结层18的通孔，增加了背膜17释放应力的空间，进而有效缓冲弯折柔性显示面板10时背膜17产生的应力，方便柔性显示面板100弯折。此外，由于背膜17在可弯折区域105的部分未被固定，进一步有利于柔性显示面板10的弯折。
本实施方式中，可弯折区域105位于非显示区103，根据预先设计的柔性显示面板10要弯折的位置进行设置。
进一步地，在制造柔性显示面板10时，将胶材涂布在第二表面113上形 成图案化的粘结层18。在一实施例中，可以通过切割的方式于粘结层18形成第一缓冲部181。
在其他实施例中，第一缓冲部181可以包括数个通孔，还可以将第一缓冲部181设置一个凹槽，例如设置成一个朝向背膜17开口的未贯穿粘结层18的凹槽，或者第一缓冲部181包括多个朝向背膜17开口的凹槽。
进一步地，柔性显示面板10还包括封装层19。封装层19覆盖显示层15及背板13，用于防止氧气及水汽进入柔性显示面板10的内部，延长柔性显示面板10的使用寿命。
请参阅图2，本发明第二实施方式提供一种柔性显示面板30。柔性显示面板30与第一实施方式提供的柔性显示面板10结构类似，其不同在于，柔性显示面板30还包括柔性填充物383，柔性填充物383容纳于粘结层38的第一缓冲部381。柔性填充物383能够缓冲弯折柔性显示面板30时背膜37产生的应力，有利于柔性显示面板30的弯折。
进一步地，所述柔性显示面板30包括显示区301、非显示区303及可弯折区域305，显示区301与非显示区303连接设置，可弯折区域305位于非显示区303。同样，第一缓冲部381及容纳于第一缓冲部381中的柔性填充物383对应可弯折区域305设置。
请参阅图3，本发明第三实施方式提供一种柔性显示面板50。柔性显示面板50与第一实施方式提供的柔性显示面板10结构类似，柔性显示面板50包括柔性基板51、背板53、显示层55、背膜57及粘结层58，柔性基板51包括相对设置的第一表面511及第二表面513，背板53设于第一表面511上，显示层55设于背板53远离所述粘结层58的一侧。背膜57通过粘结层58贴附于第二表面513，粘结层58包括第一缓冲部581，用以缓冲弯折柔性显示面板50时背膜57产生的应力。
本实施方式中，第一缓冲部581为一贯穿粘结层58的通孔。柔性显示面板50与柔性显示面板10的不同在于，背膜57还包括第二缓冲部573，第二缓冲部573对应粘结层58的第一缓冲部581设置，用于方便背膜17弯折变形。
如图3所示，在本实施例中，第二缓冲部573包括多个间隔设置的第一沟槽575，进而形成多个齿577。第一沟槽575的开口朝向粘结层58及背板53 设置。第一缓冲部581及第二缓冲部781对应可弯折区域705设置。
进一步地，背膜57包括相对设置的第三表面578及第四表面579，第三表面578与柔性显示面板50的粘结层58相邻设置，多个第一沟槽575形成于第三表面578，第一沟槽575的开口朝向粘结层58设置。
弯折柔性显示面板50时，由于第二缓冲部573设多个第一沟槽575，第二缓冲部573随着背膜57的弯曲易张开变形，有利于柔性显示面板50的弯折及释放背膜57弯折时产生的应力。进一步地，由于粘结层58的第一缓冲部581与背膜57的第二缓冲部573对应设置，第一缓冲部581能够缓冲弯折柔性显示面板50时背膜57产生的应力，进一步方便柔性显示面板50弯折。更甚者，由于第二缓冲部573的部分未被固定，有利于柔性显示面板50的弯折。
可以理解，第二缓冲部573的第一沟槽575的数量可以为一个，换句话说，可以将第二缓冲部573设置成一个开口朝向第一缓冲部581设置且未贯穿背膜57的凹槽。
制作柔性显示面板50时，对背膜57进行图案化，以形成第二缓冲部573。背膜57的图案化制作可用利用模具或成形后再进行如压印，镭射刻蚀或透过半导体制程等工艺制作出所需之图案与形状。
进一步地，柔性显示面板50包括显示区501、非显示区503及可弯折区域505，显示区501与非显示区503连接设置，可弯折区域505位于非显示区503，可弯折区域505根据预先设计的柔性显示面板50要弯折的位置进行设置，所述第一缓冲部581与第二缓冲部573均设置于对应所述可弯折区域505的位置。
请参阅图4，本发明第四实施方式提供一种柔性显示面板70。柔性显示面板70与第三实施方式提供的柔性显示面板50结构类似，粘结层78包括第一缓冲部781，背膜77包括对应第一缓冲部781设置的第二缓冲部773，第二缓冲部773包括多个间隔设置的第一沟槽775，背膜77包括相对设置的第三表面778及第四表面779，其不同在于，多个间隔设置的第一沟槽775形成于背膜77的第四表面779，换句话说，第一沟槽775的开口设于背膜77远离柔性显示面板70的粘结层78的一侧。由于第二缓冲部773包括多个间隔设置的第一沟槽775，弯折柔性显示面板70时，第二缓冲部773随着背膜77的弯曲易 张开变形，有利于柔性显示面板70的弯折及释放背膜77的弯折时产生的应力。
进一步地，柔性显示面板70包括显示区701、非显示区703及可弯折区域705，显示区701与非显示区703连接设置，可弯折区域705位于非显示区703。可弯折区域705根据预先设计的柔性显示面板70要弯折的位置进行设置，第一缓冲部781与第二缓冲部773均设置于对应可弯折区域705的位置。
可以理解，第二缓冲部773的第一沟槽775的数量可以为一个，换句话说，可以将第二缓冲部773设置成一个开口背离第一缓冲部781设置且未贯穿背膜77的凹槽。
制作柔性显示面板70时，对背膜77进行图案化，以形成第二缓冲部773。背膜77的图案化制作可用利用模具或成形后再进行如压印，镭射刻蚀或透过半导体制程等工艺制作出所需之图案与形状。
请参阅图5，本发明第五实施方式提供一种柔性显示面板90。柔性显示面板90与第三实施方式提供的柔性显示面板50结构类似，柔性显示面板90的柔性基板91包括相对设置的第一表面911及第二表面913，背膜97通过粘结层98与第二表面913连接，粘结层98包括第一缓冲部981，背膜97包括相对设置的第三表面971及第四表面973，第三表面971与粘结层98相邻设置，背膜97还包括对应粘结层98的第一缓冲部981设置的第二缓冲部974，第二缓冲部974包括多个第一沟槽975及多个第二沟槽977。多个第一沟槽975间隔地形成于第三表面971，第一沟槽975的开口朝向粘结层98设置。多个第二沟槽977间隔地形成于第四表面973。
进一步地，柔性显示面板90包括显示区901及非显示区903，柔性显示面板90的显示层95分布于显示区901，柔性显示面板90还包括可弯折区域905，可弯折区域905位于所述显示区901。可弯折区域905根据预先设计的柔性显示面板90要弯折的位置进行设置，第一缓冲部981、第二缓冲部974对应可弯折区域905设置。
显然，前述任一实施例中的可弯折区域还可以即设置于显示区又设置于非显示区。
请参阅图6，本发明还提供一种柔性显示装置100，其包括柔性显示面板，所述柔性显示面板为第一实施方式提供的柔性显示面板10、第二实施方式提 供的柔性显示面板30、第三实施方式提供的柔性显示面板50、第四实施方式提供的柔性显示面板70及第五实施方式提供的柔性显示面板90中的一种。柔性显示装置100可以为电视、显示器、笔记本电脑、手机、平板电脑、阅读器等具显示功能的电子设备。可以理解，柔性显示装置100还包括其他必要或非必要结构，例如装饰于所述柔性显示面板上的边框，在此不作赘述。
以上所述是本发明的优选实施例，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本发明的保护范围。

Claims (12)

  1. 一种柔性显示面板，其特征在于，所述柔性显示面板包括柔性基板、背板、显示层、背膜及粘结层，所述背板设于所述柔性基板上，所述显示层设于所述背板远离所述柔性基板的一侧，所述背膜通过所述粘结层贴附于所述柔性基板远离所述背板的一侧，所述粘结层包括第一缓冲部，用以缓冲弯折所述柔性显示面板时所述背膜产生的应力。
  2. 如权利要求1所述的柔性显示面板，其特征在于，所述第一缓冲部包括贯穿所述粘结层的通孔。
  3. 如权利要求2所述的柔性显示面板，其特征在于，所述柔性显示面板还包括柔性填充物，所述柔性填充物容纳于所述第一缓冲部。
  4. 如权利要求1所述的柔性显示面板，其特征在于，所述背膜包括第二缓冲部，所述第二缓冲部对应所述第一缓冲部设置。
  5. 如权利要求4所述的柔性显示面板，其特征在于，所述第二缓冲部包括多个间隔设置的第一沟槽。
  6. 如权利要求5所述的柔性显示面板，其特征在于，所述柔性基板包括相对设置的第一表面及第二表面，所述背板设于所述第一表面，所述背膜通过所述粘结层贴附于所述柔性基板的第二表面，所述背膜包括相对设置的第三表面及第四表面，所述第三表面与所述粘结层相邻设置，多个所述第一沟槽形成于所述第三表面。
  7. 如权利要求6所述的柔性显示面板，其特征在于，所述第二缓冲部还包括形成于所述第四表面的多个间隔设置的第二沟槽，所述第二沟槽的开口背离所述背板设置。
  8. 如权利要求5所述的柔性显示面板，其特征在于，所述柔性基板包括相对设置的第一表面及第二表面，所述背板设于所述第一表面，所述背膜通过所述粘结层贴附于所述柔性基板的第二表面，所述背膜包括相对设置的第三表面及第四表面，所述第三表面与所述粘结层相邻设置，多个所述第一沟槽形成于所述第四表面。
  9. 如权利要求1所述的柔性显示面板，其特征在于，所述柔性显示面板 还包括封装层，所述封装层设于所述显示层远离所述背膜的一侧上。
  10. 如权利要求1-9任一项所述的柔性显示面板，其特征在于，所述柔性显示面板根据预先设计的需弯折的位置而定义有可弯折区域，所述第一缓冲部相应设置于所述粘结层的对应所述可弯折区域的位置。
  11. 如权利要求10所述的柔性显示面板，其特征在于，所述柔性显示面板还包括显示区、非显示区，所述显示区与所述非显示区连接设置，所述显示层分布于所述显示区域，所述可弯折区域位于所述非显示区和/或所述显示区。
  12. 一种柔性显示装置，其特征在于，所述柔性显示装置包括如权利要求1-11任一项所述的柔性显示面板。
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CN206757466U (zh) * 2017-04-22 2017-12-15 深圳市柔宇科技有限公司 柔性支撑件、柔性显示装置及移动终端

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