WO2022246918A1 - 显示装置 - Google Patents

显示装置 Download PDF

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Publication number
WO2022246918A1
WO2022246918A1 PCT/CN2021/099140 CN2021099140W WO2022246918A1 WO 2022246918 A1 WO2022246918 A1 WO 2022246918A1 CN 2021099140 W CN2021099140 W CN 2021099140W WO 2022246918 A1 WO2022246918 A1 WO 2022246918A1
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WO
WIPO (PCT)
Prior art keywords
film layer
fan
display device
layer
area
Prior art date
Application number
PCT/CN2021/099140
Other languages
English (en)
French (fr)
Inventor
游魁华
汤家亮
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 US17/598,838 priority Critical patent/US11895813B2/en
Publication of WO2022246918A1 publication Critical patent/WO2022246918A1/zh
Priority to US18/534,540 priority patent/US20240107727A1/en

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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
    • G09F9/35—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 liquid crystals
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0067—Devices for protecting against damage from electrostatic discharge
    • 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
    • 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
    • G09F9/335—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 being organic light emitting diodes [OLED]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/03—Covers

Definitions

  • the present application relates to the technical field of flexible display, in particular to a display device.
  • borderless OLED display has become one of the important development trends at present.
  • the pad bending (Pad Bending) technology has become one of the keys to determine the yield.
  • the Pad Bending technology has gradually replaced the COF Bending technology and has become the mainstream Bending technology because it can significantly shorten the frame width of the display panel.
  • the Pad Bending technology needs to cut the display substrate in a special shape, remove the test area of the display substrate, and bend the Pad area to the back of the display substrate to reduce the width of the frame.
  • UV glue In order to protect the circuit in the bending area of the display panel, UV glue needs to be coated on the circuit in the bending area of the display panel.
  • the UV glue In the prior art, the UV glue needs to be connected with an optical functional film layer such as a polarizer to protect the display panel from electrostatic discharge (ESD).
  • ESD electrostatic discharge
  • dislocation interference occurs between the UV glue and the optical function film layer, resulting in excessive local stress of the circuit at the junction of the UV glue and the optical function film layer.
  • the display device provided by the present application can not only play a better ESD protection role, but also avoid dislocation interference between the protective layer and the optical functional film layer, and reduce the interface between the protective layer and the optical functional film layer.
  • the application provides a display device, including:
  • Display panel includes a display area and a non-display area
  • the non-display area includes a first fan-out area, a second fan-out area, and an area located between the first fan-out area and the second fan-out area the bending area between
  • optical functional film layer is formed in the display area and the first fan-out area of the display panel;
  • the adhesive layer is formed on the optical functional film layer
  • a protective layer is formed on the display panel, the protective layer is located in the bending area and spans part of the first fan-out area and part of the second fan-out area, the optical There is a gap between the functional film layer and the protective layer;
  • one end of the bonding layer adjacent to the bending area exceeds the optical function film layer and is connected with the protective layer, and the bonding layer covers the optical function film layer, the gap and part the protective layer.
  • the width of the portion of the bonding layer beyond the optical functional film layer is defined as W, and then 0 ⁇ W ⁇ 1.0 mm.
  • the adhesive layer is optically transparent adhesive
  • the protective layer is UV adhesive
  • the adhesive layer is located in the first fan-out area and the display area.
  • the display device further includes a cover plate, the cover plate is formed on the adhesive layer, and one end of the cover plate adjacent to the bending area covers part of the The protective layer.
  • the display device further includes a flexible circuit board, and the flexible circuit board is formed on the display panel and located in the second fan-out area.
  • the display device further includes:
  • the first back supporting film layer is bonded on the display panel; the first back supporting film layer is located in the first fan-out area and extends from the first fan-out area to the bending area ;
  • the first back support film layer is located between the first fan-out region of the display panel and the substrate;
  • the second back supporting film layer is bonded on the display panel; the second back supporting film layer is located in the second fan-out area and extends from the second fan-out area to the bending area .
  • the second back support film layer is disconnected from the first back support film layer.
  • the second fan-out area when the display panel located in the bending area is in a bent state, the second fan-out area partially overlaps the first fan-out area, and the second fan-out area partially overlaps with the first fan-out area.
  • the back supporting film layer is pasted on the surface of the substrate away from the first back supporting film layer.
  • the display panel further includes a fixing layer, and the fixing layer is formed between the second back supporting film layer and the substrate.
  • the beneficial effects of the present application are: in the display device provided by the present application, one end of the adhesive layer formed on the optical functional film layer adjacent to the bending area exceeds the optical functional film layer and is in contact with the bonding layer formed on the bending area.
  • the protective layer on the circuit of the folding area is connected, and the optical functional film layer is not in contact with the protective layer, which can not only play the role of ESD protection, but also avoid the contact between the protective layer and the optical functional film. Dislocation interference occurs between the layers, reducing the local stress of the circuit at the junction of the protective layer and the optical function film layer.
  • FIG. 1 is a block diagram of a display device provided by the present application.
  • FIG. 2 is a schematic diagram of the film layer of the display device shown in FIG. 1 (in a bent state);
  • FIG. 3 is a schematic diagram of partial film layers of the display device shown in FIG. 1 (in a non-bending state).
  • the present application aims at the technical problem that the ESD protection ability of the existing display device is poor, and the end of the adhesive layer formed on the optical function film layer of the display device near the bending area exceeds the optical function film layer and is connected to the protective layer formed on the circuit in the bending area, and keeps the optical functional film layer from contacting the protective layer, which can not only play the role of ESD protection, but also avoid the Dislocation interference occurs between the protective layer and the optical functional film layer, reducing the local stress of the circuit at the junction of the protective layer and the optical functional film layer.
  • the display device 100 may be a display screen, a computer, a mobile phone, and the like.
  • the display device 100 includes a display panel 10 , an optical function film layer 20 , an adhesive layer 30 and a protective layer 40 .
  • both the optical function film layer 20 and the protective layer 40 are pasted on the display panel 10
  • the adhesive layer 30 is formed on the optical function film layer 20 .
  • the display panel 10 includes a display area 101 and a non-display area 102 adjacent to the display area 101 .
  • the display panel 10 located in the non-display area 102 includes a first fan-out area 11, a second fan-out area 12, and a bend located between the first fan-out area 11 and the second fan-out area 12 District 13. Circuits (not shown) are arranged in the bending area 13 . After the bending area 13 is bent, the second fan-out area 12 partially overlaps the first fan-out area 11 .
  • the optical function film layer 20 is located in the first fan-out area 11 and the display area.
  • the optical functional film layer 20 is a polarizing layer.
  • the type of the optical functional film layer 20 is not limited to the polarizing layer, and can be set and selected according to actual needs.
  • an end of the bonding layer 30 adjacent to the bending area 13 exceeds the optical function film layer 20 .
  • the width of the part of the bonding layer 30 beyond the optical function film layer 20 as W, then 0 ⁇ W ⁇ 1.0mm.
  • 0 ⁇ W ⁇ 0.5mm Preferably, 0 ⁇ W ⁇ 0.5mm, so as to ensure that the adhesive layer 30 and the protective layer 40 are connected together.
  • the adhesive layer 30 is transparent. In an optional embodiment of the present application, the light transmittance of the bonding layer 30 is greater than 90%.
  • the material of the bonding layer 30 is optical transparent adhesive (Optical Clear Adhesive, OCA).
  • OCA optical Clear Adhesive
  • OCA is a special adhesive used for bonding transparent optical components. It is colorless and transparent, has a light transmittance of more than 90%, good bonding strength, can be cured at room temperature or medium temperature, and has small curing shrinkage, etc. features.
  • OCA is used as an adhesive to cover the optical function layer 20 , the OCA has a good light transmittance and has little influence on the display effect of the display panel.
  • the material of the bonding layer 30 is not limited to optical transparent glue, and can also be other types of optical glue.
  • the adhesive layer 30 is located in the first fan-out area 11 . In other embodiments, a part of the adhesive layer 30 may also be located in the bending region 13 .
  • the protection layer 40 is used to protect the circuit in the bending area 13 .
  • the protective layer 40 is located in the bending region 13 and spans part of the first fan-out region 11 and part of the second fan-out region 12 .
  • the adhesive layer 30 is connected to the protective layer 40 .
  • the bonding layer 30 covers the optical function film layer 20 and part of the protective layer 40 . Since the adhesive layer 30 has fluidity, the adhesive layer 30 is in close contact with the protective layer 40 covered by the adhesive layer 30, so that it can not only play the role of ESD protection, thereby avoiding the The bending causes the protection layer 40 to be separated from the circuit in the bending area 13 .
  • the material of the protective layer 40 is UV glue.
  • the material of the protective layer 40 is not limited to UV glue, and can also be other types of UV glue that meet the requirements. glue.
  • the width of the gap 110 can be set according to actual conditions.
  • the width of the gap 110 is greater than 0 mm and less than 0.5 mm.
  • the adhesive layer 30 covers the optical function film layer 20 , the gap 110 and part of the protective layer 40 . Since the adhesive layer 30 has fluidity, the adhesive layer 30 will fill in the gap 110 .
  • the display device 100 further includes a cover plate 50, the cover plate 50 is formed on the adhesive layer 30, and the cover plate 50 is adjacent to the bending area 13 One end of the cover covers the adhesive layer 30 and part of the protective layer 40 to prevent the adhesive layer 30 from being exposed and protect the bending area 13 .
  • the cover plate 50 is generally made of glass or other transparent materials, the middle of the cover plate 50 is a light-transmitting part (not shown in the figure), and the surrounding of the cover plate 50 is a mounting part (not shown in the figure).
  • a light-shielding material is also coated on the installation part.
  • the display device 100 further includes a first back support film layer 61 , a second back support film layer 62 and a substrate 70 .
  • the first back supporting film layer 61 is bonded on the display panel 10 , the first back supporting film layer 61 is located in the first fan-out area 11 and extends from the first fan-out area 11 extending to the bending zone 13 .
  • the second back supporting film layer 62 is bonded on the display panel 10 , the second back supporting film layer 62 is located in the second fan-out area 12 and extends from the second fan-out area 12 extending into the bending zone 13 .
  • the second back supporting film layer 62 is disconnected from the first back supporting film layer 61 .
  • the substrate 70 is formed on the first back supporting film layer 61 .
  • the first back supporting film layer 61 is located between the first fan-out region 11 of the display panel 10 and the substrate 70 .
  • the second fan-out area 12 when the display panel 10 located in the bending area 13 is in a bent state, the second fan-out area 12 partially overlaps the first fan-out area 11, The second back supporting film layer 62 is bonded on the surface of the substrate 70 away from the first back supporting film layer 61 .
  • the display device 100 further includes a fixed layer 80, the fixed layer 80 is formed between the second back support film layer 62 and the substrate 70, so that the The second back supporting film layer 62 and the second fan-out region 12 are fixedly connected to the substrate 70 .
  • the fixed layer 80 also has a buffering effect.
  • the display device 100 further includes a flexible circuit board 90, the flexible circuit board 90 is formed on the display panel 10 and located in the second fan-out area 12, so The flexible circuit board 90 and the second back supporting film layer 62 are respectively formed on two opposite surfaces of the display panel 10 in the second fan-out region 12 .
  • the flexible circuit board 90 is used for connecting electronic components.
  • the beneficial effects of the present application are: in the display device provided by the present application, one end of the adhesive layer formed on the optical functional film layer adjacent to the bending area exceeds the optical functional film layer and is in contact with the bonding layer formed on the bending area.
  • the protective layer on the line of the folding area is connected, and the optical functional film layer is not in contact with the protective layer, which can not only avoid dislocation interference between the protective layer and the optical functional film layer, Reducing the local stress of the circuit at the junction of the protective layer and the optical function film layer can also play an ESD protection role.

Abstract

本申请提供显示装置，包括：显示面板，包括显示区及非显示区，非显示区包括第一和第二扇出区及弯折区；光学功能膜层，形成于显示区及第一扇出区；粘结层，形成于光学功能膜层；及保护层，位于弯折区且与光学功能膜层具有间隙；粘结层的一端超出光学功能膜层并与保护层连接，粘结层覆盖光学功能膜层、间隙及部分保护层。

Description

显示装置 技术领域
本申请涉及柔性显示技术领域，尤其涉及一种显示装置。
 背景技术
随着柔性有机发光器件(Organic Light-Emitting Diode，OLED)显示技术的发展和成熟，无边框OLED显示器成为当前重要的发展趋势之一。在无边框OLED显示器的制造工艺中，衬垫弯折(Pad Bending)技术成为决定良率的关键之一。
目前，Pad Bending技术因其可使显示面板的边框宽度显著缩短，已经逐渐替代COF Bending技术，成为了主流的Bending技术。Pad Bending技术需要对显示基板进行异形切割，去除显示基板的测试区，并将Pad区弯折至显示基板的背面，达到减小边框宽度的目的。
为了保护显示面板的弯折区线路，需要在显示面板的弯折区线路上涂布UV胶。在现有技术中，常将所述UV胶需要与偏振片等光学功能膜层相连接以对显示面板进行静电放电(electro-static discharge，ESD)防护。在弯折过程中，所述UV胶与所述光学功能膜层之间发生位错干涉，导致所述UV胶与所述光学功能膜层交界处的线路的局部应力过大。
 技术问题
本申请提供的显示装置不仅能够起到较好ESD防护作用，还能够避免所述保护层与所述光学功能膜层之间发生位错干涉，降低所述保护层与所述光学功能膜层交界处的线路的局部应力。
 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：
本申请提供一种显示装置，包括：
显示面板；所述显示面板包括显示区及非显示区，所述非显示区包括第一扇出区、第二扇出区及位于所述第一扇出区和所述第二扇出区之间的弯折区；
光学功能膜层；所述光学功能膜层形成在所述显示面板的所述显示区及所述第一扇出区内；
粘结层；所述粘结层形成在所述光学功能膜层上；及
保护层；所述保护层形成在所述显示面板上，所述保护层位于所述弯折区内并横跨部分所述第一扇出区及部分所述第二扇出区，所述光学功能膜层与所述保护层之间具有间隙；
其中，所述粘结层的临近所述弯折区的一端超出所述光学功能膜层并与所述保护层相连接，所述粘结层覆盖所述光学功能膜层、所述间隙及部分所述保护层。
在本申请一可选实施例中，定义所述粘结层超出所述光学功能膜层的部分的宽度为W，则0<W≤1.0mm。
在本申请一可选实施例中，所述粘结层为光学透明胶，所述保护层为UV胶。
在本申请一可选实施例中，所述粘结层位于所述第一扇出区及所述显示区内。
在本申请一可选实施例中，所述显示装置还包括一盖板，所述盖板形成在所述粘结层上，所述盖板的临近所述弯折区的一端覆盖部分所述保护层。
在本申请一可选实施例中，所述显示装置还包括一柔性电路板，所述柔性电路板形成在所述显示面板上且位于所述第二扇出区内。
在本申请一可选实施例中，所述显示装置还包括：
第一背面支撑膜层，贴合在所述显示面板上；所述第一背面支撑膜层位于所述第一扇出区内且自所述第一扇出区延伸至所述弯折区内；
基板，形成在所述第一背面支撑膜层上；所述第一背面支撑膜层位于所述显示面板的所述第一扇出区与所述基板之间；及
第二背面支撑膜层，贴合在所述显示面板上；所述第二背面支撑膜层位于所述第二扇出区内且自所述第二扇出区延伸至所述弯折区内。
在本申请一可选实施例中，所述第二背面支撑膜层与第一背面支撑膜层是断开的。
在本申请一可选实施例中，当位于所述弯折区的所述显示面板处于弯折状态时，所述第二扇出区与所述第一扇出区部分重叠，所述第二背面支撑膜层贴合在所述基板的远离所述第一背面支撑膜层的表面上。
在本申请一可选实施例中，所述显示面板还包括一固定层，所述固定层形成在所述第二背面支撑膜层与所述基板之间。
 有益效果
本申请的有益效果为：本申请提供的显示装置的形成在所述光学功能膜层上的粘结层的临近所述弯折区的一端超出所述光学功能膜层且与形成在所述弯折区的线路上的所述保护层相连接，并使得所述光学功能膜层不与所述保护层接触，不仅能够起到ESD防护作用，还可以避免所述保护层与所述光学功能膜层之间发生位错干涉，降低所述保护层与所述光学功能膜层交界处的线路的局部应力。
 附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图。
图1为本申请提供的一种显示装置的模块示意图；
图2为图1所示的显示装置（处于弯折状态）的膜层示意图；及
图3为图1所示的显示装置（处于非弯折状态）的局部膜层的示意图。
 本发明的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
在本申请的描述中，需要理解的是，术语“上”、“下”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个所述特征。在本申请的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
本申请可以在不同实施中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施方式和/或设置之间的关系。
本申请针对现有的显示装置的ESD防护能力较差的技术问题，将显示装置的形成在所述光学功能膜层上的粘结层的临近所述弯折区的一端超出所述光学功能膜层且与形成在所述弯折区的线路上的所述保护层相连接，并使得所述光学功能膜层不与所述保护层接触，不仅能够起到ESD防护作用，还可以避免所述保护层与所述光学功能膜层之间发生位错干涉，降低所述保护层与所述光学功能膜层交界处的线路的局部应力。
以下将结合具体实施例对本申请的显示装置进行详细描述。
请参阅图1-3，本申请较佳实施例提供一种显示装置100。所述显示装置100可以为显示屏、电脑、手机等。
其中，所述显示装置100包括显示面板10、光学功能膜层20、粘结层30及保护层40。其中，所述光学功能膜层20及所述保护层40均贴合在所述显示面板10上，所述粘结层30形成在所述光学功能膜层20上。
其中，所述显示面板10包括显示区101及与所述显示区101相邻的非显示区102。位于所述非显示区102内的显示面板10包括第一扇出区11、第二扇出区12及位于所述第一扇出区11和所述第二扇出区12之间的弯折区13。所述弯折区13内设置有线路（图未示）。所述弯折区13弯折后，所述第二扇出区12与所述第一扇出区11部分重叠。
具体地，所述光学功能膜层20位于所述第一扇出区11及所述显示区内。在本申请一可选实施例中，所述光学功能膜层20为偏光层。在其他实施例中，所述光学功能膜层20的种类并不局限于偏光层，可以根据实际需要进行设置与选择。
具体地，所述粘结层30的临近所述弯折区13的一端超出所述光学功能膜层20。定义所述粘结层30超出所述光学功能膜层20的部分的宽度为W，则0<W≤1.0mm。优选地，0<W≤0.5mm，以保证所述粘结层30与所述保护层40连接在一起。
其中，所述粘结层30透光。在本申请一可选实施例中，所述粘结层30的光透过率大于90%。
在本申请一可选实施例中，所述粘结层30的材质为光学透明胶（Optical Clear Adhesive，OCA）。其中，OCA是一种用于胶结透明光学元件的特种粘胶剂，具有无色透明、光透过率在90％以上、胶结强度良好，可在室温或中温下固化，且有固化收缩小等特点。当OCA作为粘结胶铺满所述光学功能层20，OCA具有很好的光透过率，对显示面板的显示效果影响较小。
在其他实施例中，所述粘结层30的材质并不局限于光学透明胶，还可以是其他种类的光学胶。
在本申请一可选实施例中，所述粘结层30位于所述第一扇出区11内。在其他实施例中，所述粘结层30的一部分还可以位于所述弯折区13内。
其中，所述保护层40用于保护所述弯折区13内的所述线路。具体地，所述保护层40位于所述弯折区13内并横跨部分所述第一扇出区11及部分所述第二扇出区12。所述粘结层30与所述保护层40相连接。具体地，所述粘结层30覆盖所述光学功能膜层20及部分所述保护层40。由于所述粘结层30具有流动性，故，所述粘结层30与被所述粘结层30覆盖的所述保护层40紧密贴合，从而不仅可以起到ESD防护作用，从而避免因弯折造成所述保护层40与所述弯折区13内的线路分离。
在本申请一可选实施例中，所述保护层40的材质为UV胶，在其他实施例中，所述保护层40的材质并不局限于UV胶，还可以是其他种类的符合要求的胶。
具体地，所述光学功能膜层20与所述保护层40之间具有间隙110，也即，所述光学功能膜层20与所述保护层40不接触，以避免所述保护层40与所述光学功能膜层20之间发生位错干涉，进而降低所述保护层40与所述光学功能膜层20交界处的线路的局部应力。其中，所述间隙110的宽度可以根据实际情况进行设定。优选地，所述间隙110的宽度大于0mm小于0.5mm。
具体地，所述粘结层30覆盖所述光学功能膜层20、所述间隙110及部分所述保护层40。由于所述粘结层30具有流动性，故，所述粘结层30会填充在所述间隙110内。
在本申请一可选实施例中，所述显示装置100还包括一盖板50，所述盖板50形成在所述粘结层30上，所述盖板50的临近所述弯折区13的一端覆盖所述粘结层30及部分所述保护层40以避免所述粘结层30裸露并保护所述弯折区13。
其中，所述盖板50通常由玻璃或其他透明材料制成，所述盖板50的中间为透光部（图未示），所述盖板50的四周为安装部（图未示）。在本申请一可选实施例中，在所述安装部上还涂覆有遮光材料。
在本申请一可选实施例中，所述显示装置100还包括第一背面支撑膜层61、第二背面支撑膜层62及基板70。
其中，所述第一背面支撑膜层61贴合在所述显示面板10上，所述第一背面支撑膜层61位于所述第一扇出区11内并自所述第一扇出区11延伸至所述弯折区13。
其中，所述第二背面支撑膜层62贴合在所述显示面板10上，所述第二背面支撑膜层62位于所述第二扇出区12内并自所述第二扇出区12延伸至所述弯折区13内。所述第二背面支撑膜层62与所述第一背面支撑膜层61之间是断开的。
其中，所述基板70形成在所述第一背面支撑膜层61上。所述第一背面支撑膜层61位于所述显示面板10的所述第一扇出区11与所述基板70之间。
在本申请一可选实施例中，当位于所述弯折区13的所述显示面板10处于弯折状态时，所述第二扇出区12与所述第一扇出区11部分重叠，所述第二背面支撑膜层62贴合在所述基板70的远离所述第一背面支撑膜层61的表面上。
在本申请一可选实施例中，所述显示装置100还包括一固定层80，所述固定层80形成在所述第二背面支撑膜层62与所述基板70之间，以将所述第二背面支撑膜层62及所述第二扇出区12固定连接在所述基板70上。所述固定层80还具有缓冲作用。
在本申请一可选实施例中，所述显示装置100还包括一柔性电路板90，所述柔性电路板90形成在所述显示面板10上且位于所述第二扇出区12内，所述柔性电路板90及所述第二背面支撑膜层62分别形成位于所述第二扇出区12内的所述显示面板10的相背的两表面上。所述柔性电路板90用于外接电子元件。
本申请的有益效果为：本申请提供的显示装置的形成在所述光学功能膜层上的粘结层的临近所述弯折区的一端超出所述光学功能膜层且与形成在所述弯折区的线路上的所述保护层相连接，并使得所述光学功能膜层不与所述保护层接触，不仅可以避免所述保护层与所述光学功能膜层之间发生位错干涉，降低所述保护层与所述光学功能膜层交界处的线路的局部应力，还能够起到ESD防护作用。
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. 一种显示装置，其中，包括：
    显示面板；所述显示面板包括显示区及非显示区，所述非显示区包括第一扇出区、第二扇出区及位于所述第一扇出区和所述第二扇出区之间的弯折区；
    光学功能膜层；所述光学功能膜层形成在所述显示面板的所述显示区及所述第一扇出区内；
    粘结层；所述粘结层形成在所述光学功能膜层上；及
    保护层；所述保护层形成在所述显示面板上，所述保护层位于所述弯折区内并横跨部分所述第一扇出区及部分所述第二扇出区，所述光学功能膜层与所述保护层之间具有间隙；
    其中，所述粘结层的临近所述弯折区的一端超出所述光学功能膜层并与所述保护层相连接，所述粘结层覆盖所述光学功能膜层、所述间隙及部分所述保护层。
  2. 如权利要求1所述的显示装置，其中，定义所述粘结层超出所述光学功能膜层的部分的宽度为W，则0<W≤1.0mm。
  3. 如权利要求1所述的显示装置，其中，所述粘结层为光学透明胶，所述保护层为UV胶。
  4. 如权利要求1所述的显示装置，其中，所述粘结层位于所述第一扇出区及所述显示区内。
  5. 如权利要求2所述的显示装置，其中，所述粘结层位于所述第一扇出区及所述显示区内。
  6. 如权利要求3所述的显示装置，其中，所述粘结层位于所述第一扇出区及所述显示区内。
  7. 如权利要求1所述的显示装置，其中，所述显示装置还包括一盖板，所述盖板形成在所述粘结层上，所述盖板的临近所述弯折区的一端覆盖部分所述保护层。
  8. 如权利要求2所述的显示装置，其中，所述显示装置还包括一盖板，所述盖板形成在所述粘结层上，所述盖板的临近所述弯折区的一端覆盖部分所述保护层。
  9. 如权利要求3所述的显示装置，其中，所述显示装置还包括一盖板，所述盖板形成在所述粘结层上，所述盖板的临近所述弯折区的一端覆盖部分所述保护层。
  10. 如权利要求1所述的显示装置，其中，所述显示装置还包括一柔性电路板，所述柔性电路板形成在所述显示面板上且位于所述第二扇出区内。
  11. 如权利要求2所述的显示装置，其中，所述显示装置还包括一柔性电路板，所述柔性电路板形成在所述显示面板上且位于所述第二扇出区内。
  12. 如权利要求3所述的显示装置，其中，所述显示装置还包括一柔性电路板，所述柔性电路板形成在所述显示面板上且位于所述第二扇出区内。
  13. 如权利要求1所述的显示装置，其中，所述显示装置还包括：
    第一背面支撑膜层，贴合在所述显示面板上；所述第一背面支撑膜层位于所述第一扇出区内且自所述第一扇出区延伸至所述弯折区内；
    基板，形成在所述第一背面支撑膜层上；所述第一背面支撑膜层位于所述显示面板的所述第一扇出区与所述基板之间；及
    第二背面支撑膜层，贴合在所述显示面板上；所述第二背面支撑膜层位于所述第二扇出区内且自所述第二扇出区延伸至所述弯折区内。
  14. 如权利要求2所述的显示装置，其中，所述显示装置还包括：
    第一背面支撑膜层，贴合在所述显示面板上；所述第一背面支撑膜层位于所述第一扇出区内且自所述第一扇出区延伸至所述弯折区内；
    基板，形成在所述第一背面支撑膜层上；所述第一背面支撑膜层位于所述显示面板的所述第一扇出区与所述基板之间；及
    第二背面支撑膜层，贴合在所述显示面板上；所述第二背面支撑膜层位于所述第二扇出区内且自所述第二扇出区延伸至所述弯折区内。
  15. 如权利要求3所述的显示装置，其中，所述显示装置还包括：
    第一背面支撑膜层，贴合在所述显示面板上；所述第一背面支撑膜层位于所述第一扇出区内且自所述第一扇出区延伸至所述弯折区内；
    基板，形成在所述第一背面支撑膜层上；所述第一背面支撑膜层位于所述显示面板的所述第一扇出区与所述基板之间；及
    第二背面支撑膜层，贴合在所述显示面板上；所述第二背面支撑膜层位于所述第二扇出区内且自所述第二扇出区延伸至所述弯折区内。
  16. 如权利要求13所述的显示装置，其中，所述第二背面支撑膜层与第一背面支撑膜层是断开的。
  17. 如权利要求14所述的显示装置，其中，所述第二背面支撑膜层与第一背面支撑膜层是断开的。
  18. 如权利要求15所述的显示装置，其中，所述第二背面支撑膜层与第一背面支撑膜层是断开的。
  19. 如权利要求13所述的显示装置，其中，当位于所述弯折区的所述显示面板处于弯折状态时，所述第二扇出区与所述第一扇出区部分重叠，所述第二背面支撑膜层贴合在所述基板的远离所述第一背面支撑膜层的表面上。
  20. 如权利要求16所述的显示装置，其中，所述显示面板还包括一固定层，所述固定层形成在所述第二背面支撑膜层与所述基板之间。
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