WO2020173441A1 - 一种折叠屏弯折区走线结构、显示装置及其制造方法 - Google Patents

一种折叠屏弯折区走线结构、显示装置及其制造方法 Download PDF

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Publication number
WO2020173441A1
WO2020173441A1 PCT/CN2020/076649 CN2020076649W WO2020173441A1 WO 2020173441 A1 WO2020173441 A1 WO 2020173441A1 CN 2020076649 W CN2020076649 W CN 2020076649W WO 2020173441 A1 WO2020173441 A1 WO 2020173441A1
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Prior art keywords
wiring
liquid
encapsulation layer
folding screen
silicone
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English (en)
French (fr)
Inventor
刘亚丽
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/873—Encapsulations
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W42/00—Arrangements for protection of devices
    • H10W42/20—Arrangements for protection of devices protecting against electromagnetic or particle radiation, e.g. light, X-rays, gamma-rays or electrons
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
    • H10W70/60—Insulating or insulated package substrates; Interposers; Redistribution layers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W74/00—Encapsulations, e.g. protective coatings
    • H10W74/40—Encapsulations, e.g. protective coatings characterised by their materials

Definitions

  • the present invention relates to the field of display, and in particular to a wiring structure in the bending area of a folding screen, a display device and a manufacturing method thereof.
  • Flexible displays are currently the mainstream of flexible organic light emitting diode display (Organic Light Emitting Display, OLED) technology.
  • Flexible OLEDs do not use glass as a substrate.
  • foldable active matrix organic light emitting diode (AMOLED) displays are more Can be folded like a wallet. When not in use, it is folded to make it smaller, and by unfolding it when in use, a large screen can be realized.
  • the display is technically difficult to achieve folding. To achieve foldability, it is necessary to study the use of materials with low stress (tensile/compressive strength) in the folded part to minimize panel damage.
  • Hinge (hinge) bending zone structure in AM0LED flexible folding screen is currently the key research issue of folding screen manufacturers.
  • the Hinge bending zone structure of the folding screen mainly adopts a metal wiring structure of Ti/Al/Ti or Mo/Al/Mo, and the metal wiring is deposited on the surface of the base film layer through a plasma sputtering process, and is chilled at high temperature.
  • a brittle amorphous structure is formed, and then organic polymer fillers are added around the metal traces to assist it to achieve better bending.
  • the surface of the metal traces still inevitably forms microstructures during the bending process. Cracks, these micro-cracks propagate during the structural process of the Hinge bending zone of the folding screen, and finally cause the metal trace to break.
  • the cracks are very subtle and difficult to observe without the aid of a microscope. Therefore, the problem of wire breakage in the bending area of the metal trace is an urgent problem in the AMOLED folding screen manufacturing process.
  • the purpose of the present invention is to provide a wiring structure in the bending area of a folding screen, a display device, and a manufacturing method thereof, which avoids the defect that the metal wiring structure is not suitable for bending and cracks are likely to occur during the bending process.
  • the structure can prevent the problem of interruption in the bending process, improve the product yield, and reduce the risk of failure during the use of the folding screen.
  • an embodiment of the present invention provides a wiring structure in the bending area of a folding screen, which includes
  • the silicone encapsulation layer is arranged in the wiring substrate
  • the liquid wiring is encapsulated in the silicone encapsulation layer, and the silicone encapsulation layer can realize the shaping of the liquid wiring;
  • the metal wiring is disposed at the end of the silicone encapsulation layer and extends into it to be electrically connected to the liquid wiring.
  • the silicone encapsulation layer uses a flexible silicone material
  • the elastic modulus of the flexible silicone material is 0.078 ⁇ 1.2 GPa
  • the volume resistivity of the flexible silicone material is 10 Q ⁇ cm.
  • silicone encapsulation layer is linear.
  • silicone encapsulation layer is in the form of a single spiral wound tube.
  • silicone encapsulation layer is a double winding type.
  • the material of the liquid wiring includes liquid silica gel, and the volume resistivity of the liquid silica gel is 10 _ 4 ⁇ 1 Q ⁇ cm.
  • the wiring substrate further includes a wiring transition encapsulation area, which is arranged at the end of the silicone encapsulation layer and covers the connecting portion of the liquid wiring and the metal wiring.
  • a display device including any one of the above-mentioned wiring structures in the bending area of the folding screen.
  • S2 The step of manufacturing a silicone encapsulation layer, coating a flexible silicone material on the surface of the liquid trace flow channel, and encapsulating it to form a silicone encapsulation layer;
  • S3 is a step of manufacturing liquid wiring, using inkjet printing or evaporation technology to inject liquid silicone into the silicone encapsulation layer to form liquid wiring;
  • step of S4 electrical connection processing a metal trace is provided at the end of the silicone encapsulation layer and extends into it to be electrically connected to the liquid trace.
  • the method further includes:
  • the S5 packaging process step is to fabricate a wiring transition packaging area on both ends of the liquid wiring flow channel, to cover the liquid wiring and the metal wiring, so as to achieve packaging processing on both sides of the wiring substrate.
  • the advantage of the present invention is to provide a wiring structure in the bending area of a folding screen, a display device, and a manufacturing method thereof, which avoids the defect that the metal wiring structure is not suitable for bending and that cracks are easily generated during the bending process.
  • the folding area of the folding screen uses liquid high-conductivity silicone rubber as the conductive trace, and uses high-conductivity silicon rubber soft material to encapsulate the liquid silicone rubber trace, which achieves good packaging and ensures high conductivity and good electromagnetic shielding characteristics .
  • the high-conductivity silicon rubber soft material is used at the two ends of the folding area of the folding screen to carry out the transition design between the metal wiring and the liquid metal wiring to ensure its function is intact.
  • the liquid silicone body has excellent electrical conductivity and bending properties, and the liquid is encapsulated by soft silicone body to ensure that it has excellent waterproof oxygen sealing and good electromagnetic shielding characteristics.
  • This structure can prevent bending Process interruption problem, improve product yield, reduce the risk of failure during the use of the folding screen.
  • FIG. 1 is a schematic structural view of a wiring structure in the bending area of a folding screen in the first embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of the silicone encapsulation layer shown in FIG. 1, which is a single-track spirally wound tube;
  • FIG. 3 is a schematic diagram of the structure of the silicone encapsulation layer shown in FIG. 1 in a double winding type
  • FIG. 4 is a schematic structural diagram of a wiring structure in the bending area of a folding screen in the second embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a display device in the third embodiment of the present invention.
  • FIG. 6 is a flow chart of a manufacturing method for a wiring structure in the bending area of a spray folding screen in the fourth embodiment of the present invention
  • FIG. 7 is a flow chart of a manufacturing method for a wiring structure in the bending area of a spray folding screen in the fifth embodiment of the present invention
  • a first embodiment of the present invention provides a folding screen bending area wiring structure 10, including: wiring substrate 1, silicone encapsulation layer 2, liquid wiring 3 and metal wiring 4.
  • the silicone encapsulation layer 2 is arranged in the wiring substrate 1; the liquid wiring 3 is encapsulated in the silicone encapsulation layer 2, and the silicone encapsulation layer 2 can realize the shaping of the liquid wiring 3; and the metal wiring 4 It is arranged at the end of the silicone encapsulation layer 2 and extends into it to be electrically connected to the liquid wiring 3.
  • the silicone encapsulation layer 2 is made of a flexible silicone material, and the elastic modulus of the flexible silicone material is 0.0078 ⁇ 1.2 GPa; the volume resistivity of the flexible silicone material is 10 Q ⁇ cm.
  • the silicone encapsulation layer 2 can achieve a good encapsulation of the liquid wiring 3 and ensure high conductivity and good electromagnetic shielding.
  • the silicone encapsulation layer 2 as shown in FIG. 1, may be in a linear shape; or in a single-track spiral-wound tube type, as shown in FIG. 2; or in a double-track-wound type, as shown in FIG. Shown in.
  • the silicone encapsulation layer 2 is used to store the liquid wiring 3 and plan the overall layout of the wiring, so as to realize the shaping effect of the liquid wiring 3.
  • the liquid 3 comprises traces of liquid silicone, liquid silicone of the volume resistivity of 10 _ 4 ⁇ 1 Q ⁇ cm .
  • the selected material for the liquid wiring 3 is preferably a highly conductive liquid silicone, but the present invention is not limited to this liquid, as long as it is a liquid or semi-liquid conductive liquid that can achieve a conductive effect is within the protection scope of the present invention.
  • the wiring substrate 1 further includes a wiring transition package Zone 5 is arranged at the end of the silicone encapsulation layer 2 and covers the connecting portion of the liquid wiring 3 and the metal wiring.
  • the wiring transition packaging area 5 has any structure and shape, and the basic requirement is that the metal wiring 4 should be covered or immersed in liquid silicone to ensure good electrical properties of the wiring transition packaging area 5.
  • a third embodiment of the present invention provides a display device, including any one of the above-mentioned folding screen bending area wiring structure 10.
  • the two sides of the wiring structure 10 in the bending area of the folding screen are respectively the wiring structure 20 in the non-bending area of the folding screen, and the metal wiring 4 in the two is integrated and shared.
  • the display device is foldable by bending the wiring structure 10 in the bending area of the folding screen.
  • the liquid wiring 3 adopts a liquid or semi-liquid conductive liquid material with flow characteristics, the liquid wiring 3 does not generate stress when bending, and the packaging film layer is made of a flexible material, which ensures the liquid wiring 3
  • the airtightness and electromagnetic shielding performance of the spirally wound tubular flow channel can eliminate the hidden danger of cable blockage, and there is no blockage caused by no flow, which ensures the stable conduction of electrical signals in the bending area of the folding screen of the display device.
  • a fourth embodiment of the present invention provides a method for manufacturing the wiring structure 10 in the bending area of the folding screen using any one of the above, including the steps:
  • a wiring substrate 1 is provided, and the wiring substrate 1 is etched by plasma treatment to form many fine holes in the area of the liquid wiring 3 on its surface, and then Dig out the liquid flow channel.
  • S2 is a step of manufacturing a silicone encapsulation layer 2, coating a flexible silicone material on the surface of the liquid trace flow channel, and encapsulating it to form a silicone encapsulation layer 2.
  • S3 is a 3 step of manufacturing liquid traces, using inkjet printing or evaporation technology to inject liquid silicone into the silicone encapsulation layer 2 to form liquid traces 3.
  • a metal trace 4 is provided at the end of the silicone encapsulation layer 2 and extends into it to be electrically connected to the liquid trace 3.
  • the method further includes:
  • S5 encapsulation processing step forming a wiring transition encapsulation area 5 on both ends of the liquid wiring flow channel, and covering the liquid wiring 3 and the metal wiring 4 to realize the packaging on both sides of the wiring substrate 1. deal with.
  • the advantage of the present invention is to provide a wiring structure in the bending area of a folding screen, a display device, and a manufacturing method thereof, which avoids the defect that the metal wiring structure is not suitable for bending and that cracks are likely to occur during the bending process.
  • the bending area of the folding screen uses high-conductivity liquid silicone as the conductive trace, and uses high-conductivity flexible silicone to counter the liquid
  • the encapsulation is carried out by the state wiring, which achieves good encapsulation and ensures the characteristics of high conductivity and good electromagnetic shielding.
  • the wiring transition encapsulation area is used for the transition between metal wiring and liquid wiring. Design to ensure its function is intact.
  • the liquid silicone body has excellent electrical conductivity and bending properties, and the flexible silicone body is used to encapsulate the liquid traces to ensure that it has excellent waterproof and oxygen tightness and good electromagnetic shielding characteristics.
  • This structure can prevent bending Process interruption problem, improve product yield, reduce the risk of failure during the use of the folding screen.

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Abstract

提供一种折叠屏弯折区走线结构、显示装置及其制造方法。折叠屏弯折区走线结构(10)包括走线基板(1)、硅胶封装层(2)、液态走线(3)和金属走线(4)。液态走线封装于硅胶封装层内，硅胶封装层可实现对液态走线的定型；金属走线设置于硅胶封装层的端部并伸入其内与液态走线电连接。显示装置包括折叠屏弯折区走线结构。

Description

一种折叠屏弯折区走线结构、 显示装置及其制造方法 技术领域
[0001] 本发明涉及显示领域， 尤其涉及一种折叠屏弯折区走线结构、 显示装置及其制 造方法。
背景技术
[0002] 柔性显示器是目前柔性有机发光二极管显示器件（Organic Light Emitting Display, OLED）技术的主流， 柔性 OLED不使用玻璃作为基板， 其中可折叠有源 矩阵有机发光二极管 （AM0LED） 显示屏， 更是可以像钱包一样折叠起来。 当不 使用时， 将其折叠以使其更小， 并且通过在使用时展开它， 可以实现大屏幕。 显示器在技术上难以实现折叠， 若要实现可折叠， 需要研究通过在折叠部分使 用具有低应力 （拉伸 /压缩强度） 的材料来最小化面板的损坏。 其中 AM0LED柔性 折叠屏中的 Hinge （铰链） 弯折区结构是目前折叠屏生产厂商重点研究的问题。
[0003] 目前， 折叠屏 Hinge弯折区结构主要采用 Ti/Al/Ti或者 Mo/Al/Mo的金属走线结 构， 金属走线通过等离子溅射的工艺沉积到基底膜层表面， 高温激冷状态下凝 固形成脆性的非晶组织， 然后在金属走线周围加上有机高分子填充物， 辅助其 实现更好的弯折， 但在弯折过程中金属走线表面还是不可避免地形成了微裂纹 ， 这些微裂纹在折叠屏 Hinge弯折区结构过程中发生裂纹扩展， 最终造成金属走 线断线。 并且裂纹很细微， 不借助显微镜， 很难观察到， 所以实现金属走线 Hin ge弯折区的断线问题是 AM0LED折叠屏制程中急需解决的问题。
发明概述
技术问题
[0004] 本发明的目的在于， 提供一种折叠屏弯折区走线结构、 显示装置及其制造方法 ， 规避掉了金属走线结构不宜弯折及弯折过程中易产生裂纹的缺陷， 该结构可 以防止弯折过程中断线问题， 提高产品良率， 降低折叠屏使用过程中失效的风 险。
问题的解决方案 技术解决方案
[0005] 为了解决上述问题， 本发明一实施例中提供一种折叠屏弯折区走线结构， 包括
[0006] 走线基板；
[0007] 硅胶封装层， 设置于所述走线基板内；
[0008] 液态走线， 封装于所述硅胶封装层内， 所述硅胶封装层可实现所述液态走线定 型；
[0009] 金属走线， 设置于所述硅胶封装层的端部并伸入其内与所述液态走线电连接。
[0010] 进一步的， 其中所述硅胶封装层采用柔性硅胶材料， 所述柔性硅胶材料的弹性 模量为 0. 0078〜 1. 2GPa; 所述柔性硅胶材料的体积电阻率为 10
Figure imgf000004_0001
Q · cm。
[0011] 进一步的， 其中所述硅胶封装层呈线型。
[0012] 进一步的， 其中所述硅胶封装层呈单道螺旋缠绕管型。
[0013] 进一步的， 其中所述硅胶封装层呈双道缠绕型。
[0014] 进一步的， 其中所述液态走线的材料包括液态硅胶， 所述液态硅胶的体积电阻 率为 10 _4〜 1 Q · cm。
[0015] 进一步的， 其中所述走线基板内还包括走线过渡封装区， 设置于所述硅胶封装 层端部并包覆所述液态走线与金属走线的相接部。
[0016] 本发明又一实施例中提供一种显示装置， 包括上述任一项的折叠屏弯折区走线 结构。
[0017] 本发明再一实施例中提供一种使用上述任一项的折叠屏弯折区走线结构的制造 方法， 包括步骤：
[0018] S1刻蚀走线基板步骤， 提供一走线基板， 利用等离子体处理蚀刻所述走线基板
， 在其表面形成液态走线区域范围内的很多微细的小孔， 进而挖出液体走线流 道；
[0019] S2制造硅胶封装层步骤， 将柔性硅胶材料涂覆到所述液体走线流道表面， 对其 进行封装形成硅胶封装层；
[0020] S3制造液态走线步骤， 采用喷墨打印或蒸镀技术在所述硅胶封装层中注入液态 娃胶， 形成液态走线； [0021] S4电连接处理步骤， 在所述硅胶封装层的端部设置金属走线并伸入其内与所述 液态走线电连接。
[0022] 进一步的， 其中在所述 S4封装处理步骤后还包括：
[0023] S5封装处理步骤， 对所述液体走线流道两端制造走线过渡封装区， 包覆所述液 态走线与金属走线， 实现所述走线基板两侧封装处理。
发明的有益效果
有益效果
[0024] 本发明的优点在于， 提供一种折叠屏弯折区走线结构、 显示装置及其制造方法 ， 规避掉了金属走线结构不宜弯折及弯折过程中易产生裂纹的缺陷， 其中折叠 屏弯折区采用液态高导电硅橡胶作为导电走线， 并采用高导电硅橡胶软材质对 液态硅橡胶走线进行封装， 实现了良好的封装及保证了高导电和良好电磁屏蔽 性的特点， 在折叠屏弯折区的两端采用高导电硅橡胶软材质进行金属走线与液 态金属走线的过渡设计， 保证其功能完好。 液态硅胶体具有极好的导电性及弯 折性， 并且采用软质硅胶体对其液态进行封装， 保证其具有极好的防水氧的密 封性及良好的电磁屏蔽特性， 该结构可以防止弯折过程中断线问题， 提高产品 良率， 降低折叠屏使用过程中失效的风险。 对附图的简要说明
附图说明
[0025] 图 1为本发明的第一实施例中一种折叠屏弯折区走线结构的结构示意图；
[0026] 图 2为图 1所示的硅胶封装层， 呈单道螺旋缠绕管型的结构示意图；
[0027] 图 3为图 1所示的硅胶封装层， 呈双道缠绕型的结构示意图；
[0028] 图 4为本发明的第二实施例中一种折叠屏弯折区走线结构的结构示意图；
[0029] 图 5为本发明的第三实施例中一种显示装置的结构示意图；
[0030] 图 6为本发明的第四实施例中一种喷折叠屏弯折区走线结构的制造方法流程图
[0031] 图 7为本发明的第五实施例中一种喷折叠屏弯折区走线结构的制造方法流程图
[0032] 图中部件标识如下: [0033] 1走线基板、 2娃胶封装层、 3液态走线、 4金属走线、 5走线过渡封装区、
[0034] 10折叠屏弯折区走线结构、 20折叠屏非弯折区走线结构。
发明实施例
本发明的实施方式
[0035] 为使本发明实施例的目的、 技术方案和优点更加清楚， 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 描述的实施例是本发明一部分实施例， 而不是全部的实施例。 通常在此处附图 中描述和示出的本发明实施例的组件可以以各种不同的配置来布置和设计。
[0036] 因此， 以下对在附图中提供的本发明的实施例的详细描述并非旨在限制要求保 护的本发明的范围， 而是仅仅表示本发明的选定实施例。 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， 都属于本发明保护的范围。
[0037] 请参阅图 1所示， 本发明第一实施例中提供一种折叠屏弯折区走线结构 10, 包 括:走线基板 1、 硅胶封装层 2、 液态走线 3和金属走线 4。 其中， 硅胶封装层 2设 置于所述走线基板 1内； 液态走线 3封装于所述硅胶封装层 2内， 所述硅胶封装层 2可实现所述液态走线 3定型； 金属走线 4设置于所述硅胶封装层 2的端部并伸入 其内与所述液态走线 3电连接。
[0038] 其中， 所述硅胶封装层 2采用柔性硅胶材料， 所述柔性硅胶材料的弹性模量为 0 . 0078^1. 2GPa； 所述柔性硅胶材料的体积电阻率为 10
Figure imgf000006_0001
Q · cm。 所述硅胶封 装层 2可以实现对所述液态走线 3良好的封装且保证了高导电和良好电磁屏蔽性
[0039] 其中， 所述硅胶封装层 2, 如图 1中所示， 可以呈线型； 或呈单道螺旋缠绕管型 ， 如图 2中所示； 或呈双道缠绕型， 如图 3中所示。 所述硅胶封装层 2用来存储所 述液态走线 3并规划出走线的整体布局， 实现所述液态走线 3定型作用。
[0040] 其中， 所述液态走线 3的材料包括液态硅胶， 所述液态硅胶的体积电阻率为 10 _4~1 Q · cm。 液态走线 3的选用材料优选高导电性液态娃胶， 但本发明不限定于 此液， 只要是能够实现导电作用的液态、 半液态导电液均为本发明保护范围。
[0041] 请参阅图 4所示， 本发明第二实施例中， 所述走线基板 1内还包括走线过渡封装 区 5, 设置于所述硅胶封装层 2端部并包覆所述液态走线 3与金属走线的相接部。 本发明中所述走线过渡封装区 5结构形状任意， 其基本要求为金属走线 4要被液 态硅胶覆盖或浸没， 以保证走线过渡封装区 5的良好电性。
[0042] 请参阅图 5所示， 本发明第三实施例中提供一种显示装置， 包括上述任一项的 折叠屏弯折区走线结构 10。 在所述折叠屏弯折区走线结构 10两侧分别为折叠屏 非弯折区走线结构 20, 两者中的金属走线 4为一体共用。 显示装置通过所述折叠 屏弯折区走线结构 10弯折实现可折叠。
[0043] 由于液态走线 3采用液态、 半液态导电液材质具有流动特性， 液态走线 3在进行 弯折时， 并不产生应力， 封装膜层采用的是柔性材料， 保证了液态走线 3的密封 性及电磁屏蔽性， 螺旋缠绕管式流道设计可以消除走线堵塞隐患， 不存在堵塞 造成不流动情况， 保证了显示装置的折叠屏弯折区的电信号可以稳定传导。
[0044] 请参阅图 6所示， 本发明第四实施例中提供一种使用上述任一项的折叠屏弯折 区走线结构 10的制造方法， 包括步骤：
[0045] S1刻蚀走线基板 1步骤， 提供一走线基板 1， 利用等离子体处理蚀刻所述走线基 板 1， 在其表面形成液态走线 3区域范围内的很多微细的小孔， 进而挖出液体走 线流道。
[0046] S2制造硅胶封装层 2步骤， 将柔性硅胶材料涂覆到所述液体走线流道表面， 对 其进行封装形成硅胶封装层 2。
[0047] S3制造液态走线 3步骤， 采用喷墨打印或蒸镀技术在所述硅胶封装层 2中注入液 态硅胶， 形成液态走线 3。
[0048] S4电连接处理步骤， 在所述硅胶封装层 2的端部设置金属走线 4并伸入其内与所 述液态走线 3电连接。
[0049] 请参阅图 7所示， 本发明第五实施例中， 在所述 S4封装处理步骤后还包括：
[0050] S5封装处理步骤， 对所述液体走线流道两端制造走线过渡封装区 5, 包覆所述 液态走线 3与金属走线 4， 实现所述走线基板 1两侧封装处理。
[0051] 本发明的优点在于， 提供一种折叠屏弯折区走线结构、 显示装置及其制造方法 ， 规避掉了金属走线结构不宜弯折及弯折过程中易产生裂纹的缺陷， 其中折叠 屏弯折区采用高导电性液态硅胶作为导电走线， 并采用高导电性柔性硅胶对液 态走线进行封装， 实现了良好的封装及保证了高导电性和良好电磁屏蔽性的特 点， 在折叠屏弯折区的两端采用走线过渡封装区进行金属走线与液态走线的过 渡设计， 保证其功能完好。 液态硅胶体具有极好的导电性及弯折性， 并且采用 柔性硅胶体对液态走线进行封装， 保证其具有极好的防水氧的密封性及良好的 电磁屏蔽特性， 该结构可以防止弯折过程中断线问题， 提高产品良率， 降低折 叠屏使用过程中失效的风险。
[0052] 以上所述仅是本发明的优选实施方式， 应当指出， 对于本技术领域的普通技术 人员， 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 和润饰也应视为本发明的保护范围。

Claims

权利要求书
[权利要求 1] 一种折叠屏弯折区走线结构， 其包括：
走线基板；
硅胶封装层， 设置于所述走线基板内；
液态走线， 封装于所述硅胶封装层内， 所述硅胶封装层可实现所述液 态走线定型；
金属走线， 设置于所述硅胶封装层的端部并伸入其内与所述液态走线 电连接。
[权利要求 2] 根据权利要求 1所述的折叠屏弯折区走线结构， 其中， 所述硅胶封装 层采用柔性硅胶材料， 所述柔性硅胶材料的弹性模量为 0. 0078^1. 2GP a; 所述柔性硅胶材料的体积电阻率为 10 -^1 Q ， 。
[权利要求 3] 根据权利要求 1所述的折叠屏弯折区走线结构， 其中， 所述硅胶封装 层呈线型。
[权利要求 4] 根据权利要求 1所述的折叠屏弯折区走线结构， 其中， 所述硅胶封装 层呈单道螺旋缠绕管型。
[权利要求 5] 根据权利要求 1所述的折叠屏弯折区走线结构， 其中， 所述硅胶封装 层呈双道缠绕型。
[权利要求 6] 根据权利要求 1所述的折叠屏弯折区走线结构， 其中， 所述液态走线 的材料包括液态硅胶， 所述液态硅胶的体积电阻率为 10 _4~1 Q * 011。
[权利要求 7] 根据权利要求 1所述的折叠屏弯折区走线结构， 其中， 所述走线基板 内还包括
走线过渡封装区， 设置于所述硅胶封装层端部并包覆所述液态走线与 金属走线的相接部。
[权利要求 8] 一种显示装置， 包括如权利要求 1所述的折叠屏弯折区走线结构。
[权利要求 9] 一种使用如权利要求 1所述的折叠屏弯折区走线结构的制造方法， 包 括步骤：
S1刻蚀走线基板步骤， 提供一走线基板， 利用等离子体处理蚀刻所述 走线基板， 在其表面形成液态走线区域范围内的很多微细的小孔， 进 而挖出液体走线流道；
S2制造硅胶封装层步骤， 将柔性硅胶材料涂覆到所述液体走线流道表 面， 对其进行封装形成硅胶封装层；
S3制造液态走线步骤， 采用喷墨打印或蒸镀技术在所述硅胶封装层中 注入液态硅胶， 形成液态走线；
S4电连接处理步骤， 在所述硅胶封装层的端部设置金属走线并伸入其 内与所述液态走线电连接。
［权利要求 10］ 根据权利要求 9所述的折叠屏弯折区走线结构的制造方法， 其中， 所 述 S4封装处理步骤后还包括：
S5封装处理步骤， 对所述液体走线流道两端制造走线过渡封装区， 包 覆所述液态走线与金属走线， 实现所述走线基板两侧封装处理。
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