WO2019095454A1 - 一种触控传感器及其导电膜结构 - Google Patents

一种触控传感器及其导电膜结构 Download PDF

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WO2019095454A1
WO2019095454A1 PCT/CN2017/114600 CN2017114600W WO2019095454A1 WO 2019095454 A1 WO2019095454 A1 WO 2019095454A1 CN 2017114600 W CN2017114600 W CN 2017114600W WO 2019095454 A1 WO2019095454 A1 WO 2019095454A1
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groove
sensing layer
touch sensing
touch
touch sensor
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PCT/CN2017/114600
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English (en)
French (fr)
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李波
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武汉华星光电半导体显示技术有限公司
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Priority to US15/740,720 priority Critical patent/US10564750B2/en
Publication of WO2019095454A1 publication Critical patent/WO2019095454A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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; CALCULATING OR 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices

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  • the present invention relates to the field of conductive film structures for touch sensors, and more particularly to a touch sensor and a conductive film structure thereof.
  • ITO indium tin oxide material
  • the metal grid touch technology has certain technical advantages over the ITO material in terms of flexible folding because it can use a metal material with good ductility.
  • the existing metal grid touch sensor has the following technical problems: 1.
  • the metal wire is liable to cause optical problems such as light reflection and optical interference.
  • optical problems such as light reflection and optical interference.
  • the risk of dysfunction caused by the migration of silver particles after long-term use limits the further popularization of this technology.
  • the technical problem to be solved by the present invention is to provide a touch sensor and a conductive film structure thereof, which can improve the optical effect of the touch sensor, prevent oxidation of the touch sensing layer, and improve the reliability of the touch sensor.
  • an embodiment of the present invention provides a conductive film structure for a touch sensor, comprising: a substrate having a recess for filling a touch sensing layer, the recess having The groove and the bottom of the groove; the touch sensing layer filled in the groove, the side of the touch sensing layer facing the groove opening and/or the side of the touch sensing layer facing the bottom of the groove is provided with a light absorbing isolating layer.
  • the substrate is a transparent plastic substrate, the grooves are arranged in a grid shape, and the touch sensing layer is a metal material.
  • the light-absorbing isolating layer and the touch-sensing layer are integrally filled in the groove by nanoimprinting.
  • an embodiment of the present invention provides a conductive film structure for a touch sensor, comprising: a substrate having a groove for laying a touch sensing layer, the groove having a notch And a bottom of the groove; a touch sensing layer filled in the groove; a light-absorbing isolating layer is disposed on a side of the touch sensing layer facing the bottom of the groove, and an insulating layer is disposed on a side of the touch sensing layer facing the groove.
  • the method further includes: forming a polarizing plate on a side of the substrate provided with the groove.
  • the substrate is a transparent plastic substrate, the grooves are arranged in a grid shape, and the touch sensing layer is a metal material.
  • the light-absorbing isolating layer and the touch-sensing layer are integrally filled in the groove by nanoimprinting.
  • an embodiment of the present invention provides a touch sensor including a conductive film structure for a touch sensor, and a conductive film structure for the touch sensor, including: a substrate, and a substrate Filling the groove of the touch sensing layer, the groove has a groove mouth and a groove bottom; a touch sensing layer filled in the groove, a side of the touch sensing layer facing the groove mouth and/or a touch sensing layer A light absorbing barrier layer is provided on a side facing the bottom of the groove.
  • the substrate is a transparent plastic substrate, the grooves are arranged in a grid shape, and the touch sensing layer is a metal material.
  • the light-absorbing isolating layer and the touch-sensing layer are integrally filled in the groove by nanoimprinting.
  • the conductive film of the touch sensor comprises: a substrate, the substrate is provided with a groove for filling the touch sensing layer, and the groove has a groove mouth And a bottom of the groove; a touch sensing layer filled in the groove, a side of the touch sensing layer facing the groove opening and/or a side of the touch sensing layer facing the bottom of the groove is provided with a light absorbing isolating layer, which can effectively prevent
  • the touch sensing layer reflects the display screen and the external light; the light absorbing isolation layer has an isolation effect at the same time. Prevent metal lines from coming into contact with water vapor in the air, avoid oxidation of metal lines, and nano-embossed grooves prevent possible migration of silver particles and improve product reliability.
  • FIG. 1 is a schematic structural view of a conductive film for a touch sensor according to Embodiment 1 of the present invention.
  • FIG. 2 is a schematic structural view of a conductive film for a touch sensor according to Embodiment 2 of the present invention.
  • FIG. 1 a first embodiment of a conductive film structure for a touch sensor of the present invention is shown.
  • the conductive film structure for the touch sensor in the embodiment includes: a substrate 1 having a recess 10 for filling the touch sensing layer 2, the recess 10 having a recess 10a and a recess 10b
  • the touch sensing layer 2 filled in the recess 10, the side of the touch sensing layer 2 facing the recess 10a and/or the side of the touch sensing layer 2 facing the recess 10b is provided with the light absorbing isolating layer 3.
  • the recess 10 can be extruded on the plastic substrate 1 by using a nano imprinting technique.
  • the substrate 1 is a transparent plastic substrate
  • the grooves 10 are arranged in a grid shape
  • the touch sensing layer 2 is a metal material, for example, touch.
  • the sensing layer 2 is a metal mesh line such as copper or silver produced on a transparent plastic substrate such as PET.
  • the light-absorbing isolating layer 3 in this embodiment can be formed on the side of the touch sensing layer 2 facing the groove opening 10a, or on the side of the touch sensing layer 2 facing the groove bottom 10b, or the touch sensing layer 2 is oriented.
  • the light-absorbing isolating layer 3 is formed separately from the notch opening 10a and the two sides facing the groove bottom 10b.
  • the function of the light-absorbing isolating layer 3 on the metal grid of the touch sensing layer 2 is to prevent the metal grid of the touch sensing layer 2 from reflecting the display module and/or the external light, and weakening the metal layer of the touch sensing layer 2
  • the visibility of the grid; the light-absorbing isolating layer 3 also has a certain insulating effect, preventing the metal grid of the touch sensing layer 2 from contacting the water vapor in the air, and avoiding oxidation of the metal line.
  • the light-absorbing isolating layer 3 and the touch-sensing layer 2 are integrally filled in the groove by nanoimprinting.
  • the two-layer structure is simultaneously nano-embossed in the groove 10 to prevent possible silver particle migration, thereby improving product reliability.
  • the conductive film structure for the touch sensor in this embodiment is provided with a light-absorbing isolating layer on the side of the touch sensing layer 2 facing the groove opening 10a and/or the side of the touch sensing layer 2 facing the groove bottom 10b. 3, can not only improve the optical effect of the product, but also prevent oxidation of the metal line and improve the reliability of the touch screen.
  • FIG. 2 a second embodiment of a conductive film structure for a touch sensor according to the present invention is shown.
  • the conductive film structure for the touch sensor in the embodiment includes: a substrate 1 having a groove 10 for laying the touch sensing layer 2, the groove 10 having a groove opening 10a and a groove bottom 10b
  • the touch sensing layer 2 is filled in the recess 10, and the light-absorbing isolating layer 3 is disposed on a side of the touch sensing layer 2 facing the bottom 10b of the recess, and the touch sensing layer 2 is provided with a side facing the recess 10a.
  • Layer 4
  • the method further includes: forming a polarizing plate 5 on the side of the substrate 1 on which the groove 10 is provided.
  • the recess 10 can be extruded on the plastic substrate 1 by using a nano imprinting technique.
  • the substrate 1 is a transparent plastic substrate
  • the grooves 10 are arranged in a grid shape
  • the touch sensing layer 2 is a metal material, for example, touch.
  • the sensing layer 2 is a metal mesh line such as copper or silver produced on a transparent plastic substrate such as PET.
  • the light-absorbing isolating layer 3 can be formed on the side of the touch sensing layer 2 facing the groove bottom 10b, and the isolating layer 4 is formed on the side of the touch sensing layer 2 facing the groove opening 10a.
  • the polarizer 5 can block the emission of reflected light.
  • the light-absorbing isolating layer on the side close to the polarizer 5 is changed to the insulating layer 4 having the isolation effect, which functions to protect the metal mesh of the touch sensing layer 2.
  • the light absorbing isolating layer 3, the isolating layer 4 and the touch sensing layer 2 are integrally filled in the groove by nanoimprinting.
  • the two-layer structure is simultaneously nano-embossed in the groove 10 to prevent possible silver particle migration, thereby improving product reliability.
  • the isolation layer 4 is formed on the touch sensing layer 2 toward the groove.
  • One side of the port 10a can function as a metal mesh for protecting the touch sensing layer 2, and can improve the optical effect of the product and improve the reliability of the touch screen.
  • the invention also discloses a touch sensor, which comprises the above-mentioned conductive film structure for the touch sensor, and the embodiment thereof is the same as the above-mentioned embodiment for the touch sensor conductive film structure, and details are not described herein.
  • the conductive film of the touch sensor comprises: a substrate, the substrate is provided with a groove for filling the touch sensing layer, and the groove has a groove mouth And a bottom of the groove; a touch sensing layer filled in the groove, a side of the touch sensing layer facing the groove opening and/or a side of the touch sensing layer facing the bottom of the groove is provided with a light absorbing isolating layer, which can effectively prevent
  • the touch sensing layer reflects the display screen and the external light; the light-absorbing isolating layer has an insulating effect at the same time, prevents the metal line from contacting the water vapor in the air, avoids oxidation of the metal line, and the nano-imprinted groove blocks possible silver particles. Migration improves product reliability.

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  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
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  • Position Input By Displaying (AREA)

Abstract

一种用于触控传感器的导电膜结构，包括：基板（1），基板（1）上设有用以填充触控感应层（2）的凹槽，凹槽具有凹槽口（10a）和凹槽底（10b）；填充在凹槽中的触控感应层（2），触控感应层（2）朝向凹槽口（10a）的一侧和/或触控感应层（2）朝向凹槽底（10b）的一侧设有吸光隔离层（3）。还公开了一种触控传感器。实施上述触控传感器及其导电膜结构，能够改善触控传感器的光学效果，防止触控感应层氧化，提高触控传感器的可靠性。

Description

一种触控传感器及其导电膜结构
本申请要求于2017年11月20日提交中国专利局、申请号为201711155667.9、发明名称为“一种触控传感器及其导电膜结构”的中国专利申请的优先权，上述专利的全部内容通过引用结合在本申请中。
技术领域
本发明涉及用于触控传感器的导电膜结构领域，尤其涉及一种触控传感器及其导电膜结构。
背景技术
现有技术中，随着AMOLED柔性显示技术的迅速崛起，促进整机上下游组件在柔性技术领域加速发展。
从触摸屏技术来看，单玻璃触控、盖板触控等玻璃基板的触控方案将无法满足柔性显示触控技术的需求，而纳米银技术因为目前还不太成熟，还无法在触控领域大量普及。氧化铟锡材料(ITO)虽然可以用在固定曲面的显示屏上，但是在曲率半径较小以及动态折叠方面的应用上ITO由于材料本身的原因，容易发生裂纹，而无法满足动态折叠的需求。金属网格触控技术由于可以采用延展性较好的金属材料，相对ITO材料在柔性可折叠方面有一定技术优势。
现有的金属网格触控传感器存在如下技术问题：1、由于金属线容易引起光线反射、光学干涉等光学问题。2、长期使用后银粒子迁移带来功能不良风险等限制了该技术的进一步普及。
发明内容
本发明所要解决的技术问题在于，提供一种触控传感器及其导电膜结构，能够改善触控传感器的光学效果，防止触控感应层氧化，提高触控传感器的可靠性。
为了解决上述技术问题，本发明实施例提供了一种用于触控传感器的导电膜结构，包括：基板，基板上设有用以填充触控感应层的凹槽，凹槽具有 凹槽口和凹槽底；填充在凹槽中的触控感应层，触控感应层朝向凹槽口的一侧和/或触控感应层朝向凹槽底的一侧设有吸光隔离层。
其中，基板为透明塑料基底，凹槽呈网格状排列，触控感应层为金属材料。
其中，吸光隔离层和触控感应层通过纳米压印的方式一体填充在凹槽中。
为了解决上述技术问题，本发明实施例提供了一种用于触控传感器的导电膜结构，其中，包括：基板，基板上设有用以铺设触控感应层的凹槽，凹槽具有凹槽口和凹槽底；填充在凹槽中的触控感应层，触控感应层朝向凹槽底的一侧设有吸光隔离层，触控感应层朝向凹槽口的一侧设有隔离层。
其中，还包括：形成在基板设有凹槽一侧上的偏光板。
其中，基板为透明塑料基底，凹槽呈网格状排列，触控感应层为金属材料。
其中，吸光隔离层和触控感应层通过纳米压印的方式一体填充在凹槽中。
为了解决上述技术问题，本发明实施例提供了一种触控传感器，触控传感器包括用于触控传感器的导电膜结构,用于触控传感器的导电膜结构，包括：基板，基板上设有用以填充触控感应层的凹槽，凹槽具有凹槽口和凹槽底；填充在凹槽中的触控感应层，触控感应层朝向凹槽口的一侧和/或触控感应层朝向凹槽底的一侧设有吸光隔离层。
其中，基板为透明塑料基底，凹槽呈网格状排列，触控感应层为金属材料。
其中，吸光隔离层和触控感应层通过纳米压印的方式一体填充在凹槽中。
实施本发明所提供的触控传感器及其导电膜结构，具有如下有益效果，触控传感器的导电膜包括：基板，基板上设有用以填充触控感应层的凹槽，凹槽具有凹槽口和凹槽底；填充在凹槽中的触控感应层，触控感应层朝向凹槽口的一侧和/或触控感应层朝向凹槽底的一侧设有吸光隔离层，能够有效防止触控感应层对显示屏和外界光线的反射；吸光隔离层同时具有隔绝效果， 防止金属线路与空气中的水汽接触，避免金属线路的氧化，同时纳米压印的凹槽阻止了可能的银粒子迁移，提高了产品的可靠性。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，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是本发明实施例一的用于触控传感器导电膜的结构示意图。
图2是本发明实施例二的用于触控传感器导电膜的结构示意图。
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。
参见图1，为本发明用于触控传感器的导电膜结构的实施例一。
本实施例中的用于触控传感器的导电膜结构，包括：基板1，基板1上设有用以填充触控感应层2的凹槽10，凹槽10具有凹槽口10a和凹槽底10b；填充在凹槽10中的触控感应层2，触控感应层2朝向凹槽口10a的一侧和/或触控感应层2朝向凹槽底10b的一侧设有吸光隔离层3。
具体实施时，可以利用纳米压印技术在塑胶基板1上压出凹槽10，基板1为透明塑料基底，凹槽10呈网格状排列，触控感应层2为金属材料，例如：触控感应层2为在PET等透明塑料基板上所制作的铜、银等金属网格线路。
本实施例中的吸光隔离层3可以制作在触控感应层2朝向凹槽口10a的一侧，或者制作在触控感应层2朝向凹槽底10b的一侧，或者触控感应层2朝向凹槽口10a和朝向凹槽底10b的两侧分别制作吸光隔离层3。
在触控感应层2的金属网格上制作吸光隔离层3的作用是，防止触控感应层2的金属网格对显示模组和/或外界光线的反射，减弱触控感应层2金属网格的可见性；吸光隔离层3还同时具有一定的隔绝效果，防止触控感应层2的金属网格与空气中的水汽接触，避免金属线路的氧化。
优选的，吸光隔离层3和触控感应层2通过纳米压印的方式一体填充在凹槽中。如此，将两层结构同时纳米压印的凹槽10中能够阻止可能的银粒子迁移，提高了产品可靠性。
本实施例中的用于触控传感器的导电膜结构，由于触控感应层2朝向凹槽口10a的一侧和/或触控感应层2朝向凹槽底10b的一侧设有吸光隔离层3，既可以改善产品的光学效果，也可以防止金属线路氧化，提高触摸屏可靠性。
参见图2，为本发明用于触控传感器的导电膜结构的实施例二。
本实施例中的用于触控传感器的导电膜结构，包括：基板1，基板1上设有用以铺设触控感应层2的凹槽10，凹槽10具有凹槽口10a和凹槽底10b；填充在凹槽10中的触控感应层2，触控感应层2朝向凹槽底10b的一侧设有吸光隔离层3，触控感应层2朝向凹槽口10a的一侧设有隔离层4。
本实施例中，还包括：形成在基板1设有凹槽10一侧上的偏光板5。
具体实施时，可以利用纳米压印技术在塑胶基板1上压出凹槽10，基板1为透明塑料基底，凹槽10呈网格状排列，触控感应层2为金属材料，例如：触控感应层2为在PET等透明塑料基板上所制作的铜、银等金属网格线路。
吸光隔离层3可以制作在触控感应层2朝向凹槽底10b的一侧，隔离层4制作在触控感应层2朝向凹槽口10a的一侧。其中，偏光片5能够阻挡反射光线的射出。本实施例将靠近偏光片5一侧的吸光隔离层改为单纯具有隔离效果的隔离层4，起到保护触控感应层2的金属网格的作用。
优选的，吸光隔离层3、隔离层4和触控感应层2通过纳米压印的方式一体填充在凹槽中。如此，将两层结构同时纳米压印的凹槽10中能够阻止可能的银粒子迁移，提高了产品可靠性。
本实施例中的用于触控传感器的导电膜结构，由于吸光隔离层3可以制作在触控感应层2朝向凹槽底10b的一侧，隔离层4制作在触控感应层2朝向凹槽口10a的一侧，既能够起到保护触控感应层2的金属网格的作用，有可以改善产品的光学效果，提高触摸屏可靠性。
本发明还公开了一种触控传感器，该触控传感器包括上述用于触控传感器的导电膜结构，其实施方式与上述用于触控传感器导电膜结构的实施方式相同，不再赘述。
实施本发明所提供的触控传感器及其导电膜结构，具有如下有益效果，触控传感器的导电膜包括：基板，基板上设有用以填充触控感应层的凹槽，凹槽具有凹槽口和凹槽底；填充在凹槽中的触控感应层，触控感应层朝向凹槽口的一侧和/或触控感应层朝向凹槽底的一侧设有吸光隔离层，能够有效防止触控感应层对显示屏和外界光线的反射；吸光隔离层同时具有隔绝效果，防止金属线路与空气中的水汽接触，避免金属线路的氧化，同时纳米压印的凹槽阻止了可能的银粒子迁移，提高了产品的可靠性。

Claims (13)

  1. 一种用于触控传感器的导电膜结构，其中，包括：
    基板，所述基板上设有用以填充触控感应层的凹槽，所述凹槽具有凹槽口和凹槽底；
    填充在所述凹槽中的触控感应层，所述触控感应层朝向所述凹槽口的一侧和/或所述触控感应层朝向所述凹槽底的一侧设有吸光隔离层。
  2. 如权利要求1所述的用于触控传感器的导电膜结构，其中，所述基板为透明塑料基底，所述凹槽呈网格状排列，所述触控感应层为金属材料。
  3. 如权利要求1所述的用于触控传感器的导电膜结构，其中，所述吸光隔离层和所述触控感应层通过纳米压印的方式一体填充在所述凹槽中。
  4. 如权利要求2所述的用于触控传感器的导电膜结构，其中，所述吸光隔离层和所述触控感应层通过纳米压印的方式一体填充在所述凹槽中。
  5. 一种用于触控传感器的导电膜结构，其中，包括：
    基板，所述基板上设有用以铺设触控感应层的凹槽，所述凹槽具有凹槽口和凹槽底；
    填充在所述凹槽中的触控感应层，所述触控感应层朝向所述凹槽底的一侧设有吸光隔离层，所述触控感应层朝向所述凹槽口的一侧设有隔离层。
  6. 如权利要求5所述的用于触控传感器的导电膜结构，其中，还包括：形成在所述基板设有凹槽一侧上的偏光板。
  7. 如权利要求5所述的用于触控传感器的导电膜结构，其中，所述基板为透明塑料基底，所述凹槽呈网格状排列，所述触控感应层为金属材料。
  8. 如权利要求6所述的用于触控传感器的导电膜结构，其中，所述基板为透明塑料基底，所述凹槽呈网格状排列，所述触控感应层为金属材料。
  9. 如权利要求5所述的用于触控传感器的导电膜结构，其中，所述吸光隔离层和所述触控感应层通过纳米压印的方式一体填充在所述凹槽中。
  10. 如权利要求6所述的用于触控传感器的导电膜结构，其中，所述吸光隔离层和所述触控感应层通过纳米压印的方式一体填充在所述凹槽中。
  11. 一种触控传感器，其中，所述触控传感器包括用于触控传感器的导电膜结构,所述用于触控传感器的导电膜结构，包括：
    基板，所述基板上设有用以填充触控感应层的凹槽，所述凹槽具有凹槽口和凹槽底；
    填充在所述凹槽中的触控感应层，所述触控感应层朝向所述凹槽口的一侧和/或所述触控感应层朝向所述凹槽底的一侧设有吸光隔离层。
  12. 如权利要求10所述的触控传感器，其中，所述基板为透明塑料基底，所述凹槽呈网格状排列，所述触控感应层为金属材料。
  13. 如权利要求10所述的触控传感器，其中，所述吸光隔离层和所述触控感应层通过纳米压印的方式一体填充在所述凹槽中。
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