WO2020133667A1 - 一种显示装置 - Google Patents

一种显示装置 Download PDF

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Publication number
WO2020133667A1
WO2020133667A1 PCT/CN2019/076006 CN2019076006W WO2020133667A1 WO 2020133667 A1 WO2020133667 A1 WO 2020133667A1 CN 2019076006 W CN2019076006 W CN 2019076006W WO 2020133667 A1 WO2020133667 A1 WO 2020133667A1
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WO
WIPO (PCT)
Prior art keywords
bending
display device
electrode
area
strip
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
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PCT/CN2019/076006
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English (en)
French (fr)
Inventor
胡丽
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Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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Priority to US16/335,252 priority Critical patent/US20200225792A1/en
Publication of WO2020133667A1 publication Critical patent/WO2020133667A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0206—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings
    • H04M1/0208—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings characterized by the relative motions of the body parts
    • H04M1/0214—Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position

Definitions

  • the invention relates to the field of display technology, in particular to a display device.
  • the bendability of the whole mobile phone requires the display screen to be bendable and the touch screen to bend.
  • the current conductive materials used in touch screens are mainly ITO, which has poor bending performance and is not suitable for bending touch screens; and the current touch screen substrates are mainly glass or PET, and the bending performance is not good enough to meet the requirements of bending touch screen substrates. Requirements.
  • the bendable display screen existing in the prior art breaks the touch electrode due to stress concentration when bending.
  • the invention provides a display device comprising at least one bending area and non-bending areas connected on both sides of each bending area, each bending area has a bending centerline; the substrate is bent at each bending In the corresponding part of the area, a plurality of strip-shaped channels are provided on the substrate, and the length direction of each strip-shaped channel is parallel to the bending center line.
  • strip-shaped channels are arranged in parallel at intervals to form a zigzag structure.
  • the material used for the substrate is polyimide.
  • the display device further includes a panel, which is disposed on a side of the substrate facing away from the strip channel; the panel has a plurality of touch areas distributed in an array.
  • each touch area has two first electrode areas and two second electrode areas, wherein the two first electrode areas are arranged oppositely, the two second electrode areas are arranged oppositely, and the two first electrodes arranged oppositely
  • the center line of the area perpendicularly crosses the center lines of two oppositely arranged second electrode areas; in the bending area, the intersection of the center lines of the first electrode area and the second electrode area corresponds to the Strip channel.
  • the display device further includes a conductive film, which is disposed on the panel and corresponds to the touch area.
  • the conductive film has a first conductive layer corresponding to the first electrode area connected to each touch area; in each touch area, the first electrode layer corresponding to the first electrode area is connected There is a gap between the conductive layers, the gap corresponds to the intersection position; the second conductive layer correspondingly extends from one first electrode area to another first electrode area of each touch area, the second conductive layer passes through The gap; the bridge conductive layer is bridged between the first conductive layers corresponding to the two first electrode areas of each touch area.
  • the second conductive layer is parallel to the bending center line.
  • the display device further includes an insulating layer covering the conductive film, and the insulating layer is provided with vias; the bridging conductive layer is provided on the insulating layer and passes through the corresponding vias and The first conductive layer is connected.
  • the material of the conductive film includes at least one of nano silver wire, metal mesh, graphene, and carbon nano tube.
  • the display device of the invention uses a conductive film material with better flexibility to replace the materials commonly used in the substrate and the touch electrode in the prior art, and a strip channel is opened on the substrate, and the strip channel is closed when folded to reduce the display
  • the stress of the device in the bending zone reduces the risk of the touch electrode breaking due to stress.
  • FIG. 1 is a plan view of the display device in Embodiment 1.
  • FIG. 1 is a plan view of the display device in Embodiment 1.
  • FIG. 2 is a side view of the bending zone in Embodiment 1.
  • FIG. 2 is a side view of the bending zone in Embodiment 1.
  • FIG. 3 is a bending diagram of the display device in Embodiment 1.
  • FIG. 4 is a side view of the substrate in Embodiment 1.
  • FIG. 4 is a side view of the substrate in Embodiment 1.
  • FIG. 5 is a side view of the substrate in Embodiment 2.
  • FIG. 6 is a bending diagram of the display device in Embodiment 2.
  • FIG. 7 is a partial schematic view of the display device in Embodiment 1.
  • FIG. 7 is a partial schematic view of the display device in Embodiment 1.
  • the component When certain components are described as “on” another component, the component may be directly placed on the other component; there may also be an intermediate component, which is placed on the intermediate component , And the intermediate component is placed on another component.
  • the two When a component is described as “installed to” or “connected to” another component, the two can be understood to be “installed” or “connected” directly, or a component “installed to” or “connected to” through an intermediate component Another component.
  • the display device 10 of the present invention includes a panel 110, a substrate 120, a strip-shaped channel 1210, a conductive film 130, and an insulating layer 140.
  • the substrate 120 includes a bending area 121 and non-bending areas 122 connected to both sides of each bending area 121.
  • Each bending area 121 has a bending center line 1211.
  • compressive stress and tensile stress are applied to the bending area 121 of the display device 10.
  • compressive stress is applied to the front of the bending area 121 of the display device 10
  • tensile stress is applied to the back of the bending area 121 of the display device 10. Since stress is applied to the bending region 121 of the display device 10 in two different directions, the conductive film 130 is easily broken.
  • the present invention adopts the shape of the bar on the bending region 121 Channels 1210, the strip-shaped channels 1210 are parallel to the bending direction of the substrate 120 and the bending center line 1211, the strip-shaped channels 1210 are arranged in parallel at intervals, forming a saw-tooth structure concave in the substrate 120 As shown in FIG.
  • the strip-shaped channel 1210 is saw-toothed and its bottom is pointed, when the display device 10 is in the bent state, the strip-shaped channel 1210 is in the closed state, the curved The compressive stress and tensile stress of the fold area 121 are greatly reduced, and the conductive film 130 corresponding to the fold area 121 uses a flexible material, such as nano silver wire, metal mesh, graphene, carbon nanotube, etc., so that the contact The control unit is not easy to break when it is bent.
  • the panel 110 is disposed on a side of the substrate 120 facing away from the strip channel 1210.
  • the panel 110 is provided with a plurality of touch regions 1110 distributed in an array.
  • Each touch area 1110 has two first electrode areas 1111 and a second electrode area 1112, wherein the two first electrode areas 1111 are oppositely arranged, the two second electrode areas 1112 are oppositely arranged,
  • the center lines of the two first electrode regions 1111 cross perpendicularly to the center lines of the two second electrode regions 1112 disposed oppositely.
  • the first electrode area 1111 and the second electrode area 1112 are a transmitting end and a receiving end for receiving and transmitting external signals.
  • the conductive film 130 is disposed on the panel 110 and corresponds to the touch area 1110.
  • the conductive film 130 has a first conductive layer 1310, and the first conductive layer 1310 is connected to each touch area 110, the first electrode area 1111; in each touch area 1110, there is a gap between the first conductive layer 1310 correspondingly connected to the first electrode area 1111, and the gap corresponds to a crossing position; Two conductive layers 1320, correspondingly extending from one first electrode area 1111 to another first electrode area 1111 of each touch area 1110, the second conductive layer 1320 passes through the gap; the bridge conductive layer 1330, provided On the insulating layer 140, bridge between the first conductive layers 1310 corresponding to the two first electrode regions 1111 of each touch region 1110.
  • the insulating layer 140 covers the conductive film 130, the insulating layer 140 is provided with a via 1410, and the bridging conductive layer 1330 communicates with the first conductive layer 1310 through the via 1410.
  • the metal conductive areas 114 are arranged outside the touch area 1110.
  • the metal conductive areas 114 include a first metal conductive area 1141 and a second metal conductive area 1142.
  • the first metal conductive area 1141 is connected to the first conductive layer 1310 close to the outside of the touch area 1110 and converges under the panel 110 in sequence
  • the second metal conductive area 1142 is connected to the second in turn
  • the conductive layer 1320 converges under the panel 110.
  • the structure of this embodiment is substantially similar to that of Embodiment 1, except that in this embodiment, the substrate 120 of the present invention includes two bending regions 121 and the bending regions The non-bending area 122 outside 121 is bent toward the substrate 120 away from the panel 110 when the display device 10 is in the bent state.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Signal Processing (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

本发明公开了一种显示装置，包括至少一弯折区以及连接在每一弯折区两侧的非弯折区，每一弯折区具有一弯折中心线；基板，在每一弯折区对应部分，所述基板上设有若干条形沟道，每一条形沟道的长度方向平行于所述弯折中心线。本发明的有益效果在于本发明的显示装置采用柔韧性更好的导电薄膜材料代替现有技术中基底与触控电极常采用的材料，在基底上开设条形沟道，在弯折时条形沟道合拢减小显示装置在弯折区的应力，从而降低触摸电极由于受应力而断裂的风险。

Description

一种显示装置 技术领域
本发明涉及显示技术领域，特别涉及一种显示装置。
 背景技术
随着柔性显示屏的快速发展，人们对可弯折的电子产品需求越来越强烈；比如智能手机，弯折起来就是手机大小，翻开后就平板电脑大小，方便携带，功能更多样化。
手机整机的可弯折，必然要求显示屏可弯折，同时要求触摸屏也可以弯折。但是目前触摸屏使用的导电材料主要是ITO，ITO弯折性能差，不适合制作弯折触摸屏；且目前触摸屏的基材主要是玻璃或者PET，弯折性能均不佳，无法满足弯折触摸屏基材的要求。
 技术问题
现有技术中存在的可弯曲显示屏在弯曲时出现的因应力集中造成的触摸电极断裂。
 技术解决方案
本发明提供了一种显示装置，包括至少一弯折区以及连接在每一弯折区两侧的非弯折区，每一弯折区具有一弯折中心线；基板，在每一弯折区对应部分，所述基板上设有若干条形沟道，每一条形沟道的长度方向平行于所述弯折中心线。
进一步的，若干条形沟道间隔并行排列，形成锯齿结构。
进一步的，所述基板的所用材料为聚酰亚胺。
进一步的，所述显示装置还包括面板，设于所述基板背对所述条形沟道的一侧；所述面板上具有若干阵列分布的触控区。
进一步的，每一触控区具有两个第一电极区和两个第二电极区，其中两个第一电极区相对设置，两个第二电极区相对设置，相对设置的两个第一电极区的中心连线垂直交叉于相对设置的两个第二电极区的中心连线；在所述弯折区，所述第一电极区和第二电极区的中心连线的交叉位置对应所述条形沟道。
进一步的，所述显示装置还包括导电薄膜，设于所述面板上且对应于所述触控区。
进一步的，所述导电薄膜中具有第一导电层，分别对应连接于每一触控区的第一电极区；在每一触控区，与所述第一电极区对应连接的所述第一导电层之间具有间隙，所述间隙对应交叉位置；第二导电层，对应的从每一触控区的一个第一电极区延伸至另一个第一电极区，所述第二导电层穿过所述间隙；桥接导电层，桥接于每一触控区的两个第一电极区所对应的第一导电层之间。
进一步的，在所述弯折区，所述第二导电层平行于所述弯折中心线。
进一步的，所述显示装置还包括绝缘层，覆盖所述导电薄膜，所述绝缘层上设有过孔；所述桥接导电层设于所述绝缘层上并通过对应的所述过孔与所述第一导电层连接。
进一步的，所述导电薄膜的材质包括纳米银丝、金属网、石墨烯、碳纳米管中的至少一种。
 有益效果
本发明的显示装置采用柔韧性更好的导电薄膜材料代替现有技术中基底与触控电极常采用的材料，在基底上开设条形沟道，在弯折时条形沟道合拢减小显示装置在弯折区的应力，从而降低触摸电极由于受应力而断裂的风险。
 附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域技术人员来讲，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是实施例1中的显示装置平面图。
图2是实施例1中的弯折区侧视图。
图3是实施例1中的显示装置弯折图。
图4是实施例1中基板侧视图。
图5是实施例2中基板侧视图。
图6是实施例2中显示装置弯折图。
图7是实施例1中的显示装置部分示意图。
图中
10  显示装置；
110  面板；           120 基板；
121  弯折区；         122  非弯折区；   1211  弯折中心线；
 1210 条形沟道；
130 导电薄膜；         140 绝缘层；      114  金属导电区；
1141  第一金属导电区；                   1142  第二金属导电区；
1410  过孔；
1110  触控区；
1111  第一电极区；     1112  第二电极区；
1310  第一导电层；     1320  第二导电层；
1330  桥接导电层；
 本发明的实施方式
以下结合说明书附图详细说明本发明的优选实施例，以向本领域中的技术人员完整介绍本发明的技术内容，以举例证明本发明可以实施，使得本发明公开的技术内容更加清楚，使得本领域的技术人员更容易理解如何实施本发明。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，下文实施例的说明并非用来限制本发明的范围。
本发明所提到的方向用语，例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等，仅是附图中的方向，本文所使用的方向用语是用来解释和说明本发明，而不是用来限定本发明的保护范围。
在附图中，结构相同的部件以相同数字标号表示，各处结构或功能相似的组件以相似数字标号表示。此外，为了便于理解和描述，附图所示的每一组件的尺寸和厚度是任意示出的，本发明并没有限定每个组件的尺寸和厚度。
当某些组件，被描述为“在”另一组件“上”时，所述组件可以直接置于所述另一组件上；也可以存在一中间组件，所述组件置于所述中间组件上，且所述中间组件置于另一组件上。当一个组件被描述为“安装至”或“连接至”另一组件时，二者可以理解为直接“安装”或“连接”，或者一个组件通过一中间组件“安装至”或“连接至”另一个组件。
实施例1
如图1和图2所示，本实施例中，本发明的显示装置10，包括面板110、基板120、条形沟道1210、导电薄膜130、绝缘层140。
如图7所示，所述基板120包括弯折区121以及连接在每一弯折区121两侧的非弯折区122，每一弯折区121具有一弯折中心线1211。
如图3及图4所示，由于每当显示装置10弯折或展开时，压应力和张应力施加至显示装置10的弯折区121。例如，当显示装置10处于如图3中所示的弯折状态时，压应力施加至显示装置10的弯折区121的正面，并且张应力施加至显示装置10的弯折区121的背面。因为应力在两个不同的方向上施加至显示装置10的弯折区121，所述导电薄膜130容易断裂，为了解决这一问题，本发明采用在所述弯折区121上开设所述条形沟道1210，所述条形沟道1210平行于所述基板120弯折方向及所述弯折中心线1211，所述条形沟道1210间隔并行排列，形成锯齿结构内凹于所述基板120，如图4中所示，由于条形沟道1210为锯齿状且其底部为尖头状，当显示装置10处于的弯折状态时，所述条形沟道1210处于合拢状态，所述弯折区121的压应力和张应力大大减少，且所述弯折区121对应的所述导电薄膜130采用柔性材料，如纳米银丝、金属网、石墨烯、碳纳米管等，使得所述触控单元在弯折时不易破裂。
所述面板110设于所述基板120背对所述条形沟道1210一侧，所述面板110上设有若干阵列分布的触控区1110。每一触控区1110均具有两个第一电极区1111和第二电极区1112，其中两个所述第一电极区1111相对设置，两个所述第二电极区1112相对设置，相对设置的两个所述第一电极区1111的中心连线垂直交叉于相对设置的两个所述第二电极区1112的中心连线。所述第一电极区1111和所述第二电极区1112互为发射端和接收端用以接受和发送外部信号。
所述导电薄膜130设于所述面板110上且对应于所述触控区1110，所述导电薄膜130中具有第一导电层1310，所述第一导电层1310对应连接于每一触控区110的所述第一电极区1111；在每一触控区1110中，与所述第一电极区1111对应连接的所述第一导电层1310之间具有间隙，所述间隙对应交叉位置；第二导电层1320，对应的从每一触控区1110的一个第一电极区1111延伸至另一个第一电极区1111，所述第二导电层1320穿过所述间隙；桥接导电层1330，设于所述绝缘层140上，桥接于每一触控区1110的两个第一电极区1111所对应的第一导电层1310之间。
所述绝缘层140覆盖所述导电薄膜130，所述绝缘层140设有过孔1410，所述桥接导电层1330通过所述过孔1410连通所述第一导电层1310。
所述金属导电区114排布于所述触控区1110外侧，所述金属导电区114包括第一金属导电区1141和第二金属导电区1142。其中，所述第一金属导电区1141依次连接所述第一导电层1310靠近所述触控区1110外侧并汇聚于所述面板110下方，所述第二金属导电区1142依次连接所述第二导电层1320并汇聚于所述面板110下方。
实施例2
如图5及图6所示，本实施例与实施例1的结构大体相似，不同点在于，在本实施例中，本发明的基板120上包括两个弯折区121和所述弯折区121之外的非弯折区122，当显示装置10处于的弯折状态时，所述弯折区121两侧的非弯折区122向所述基板120远离所述面板110一侧弯折。
以上对本发明所提供的终端装置进行了详细介绍。应理解，本文所述的示例性实施方式应仅被认为是描述性的，用于帮助理解本发明的方法及其核心思想，而并不用于限制本发明。在每个示例性实施方式中对特征或方面的描述通常应被视作适用于其他示例性实施例中的类似特征或方面。尽管参考示例性实施例描述了本发明，但可建议所属领域的技术人员进行各种变化和更改。本发明意图涵盖所附权利要求书的范围内的这些变化和更改。
以上仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种显示装置，其中，包括
    至少一弯折区以及连接在每一弯折区两侧的非弯折区，每一弯折区具有一弯折中心线；
    基板，在每一弯折区对应部分，所述基板上设有若干条形沟道，每一条形沟道的长度方向平行于所述弯折中心线。
  2. 根据权利要求1所述的显示装置，其中，
    若干条形沟道间隔并行排列，形成锯齿结构。
  3. 据权利要求1所述的显示装置，其中，
    所述基板的所用材料为聚酰亚胺。
  4. 根据权利要求1所述的显示装置，其中，还包括
    面板，设于所述基板背对所述条形沟道的一侧；
    所述面板上具有若干阵列分布的触控区。
  5. 根据权利要求4所述的显示装置，其中，
    每一触控区具有两个第一电极区和两个第二电极区，其中两个第一电极区相对设置，两个第二电极区相对设置，相对设置的两个第一电极区的中心连线垂直交叉于相对设置的两个第二电极区的中心连线；
    在所述弯折区，所述第一电极区和第二电极区的中心连线的交叉位置对应所述条形沟道。
  6. 根据权利要求5所述的显示装置，其中，还包括
    导电薄膜，设于所述面板上且对应于所述触控区。
  7. 根据权利要求6所述的显示装置，其中，
    所述导电薄膜中具有
    第一导电层，分别对应连接于每一触控区的第一电极区；
    在每一触控区，与所述第一电极区对应连接的所述第一导电层之间具有间隙，所述间隙对应交叉位置；
    第二导电层，对应的从每一触控区的一个第一电极区延伸至另一个第一电极区，所述第二导电层穿过所述间隙；
    桥接导电层，桥接于每一触控区的两个第一电极区所对应的第一导电层之间。
  8. 根据权利要求7所述的显示装置，其中，在所述弯折区，所述第二导电层平行于所述弯折中心线。
  9. 根据权利要求7所述的显示装置，其中，还包括
    绝缘层，覆盖所述导电薄膜，所述绝缘层上设有过孔；
    所述桥接导电层设于所述绝缘层上并通过对应的所述过孔与所述第一导电层连接。
  10. 根据权利要求7所述的显示装置，其中，所述导电薄膜的材质包括纳米银丝、金属网、石墨烯、碳纳米管中的至少一种。
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