WO2016176927A1 - 一种触摸屏及移动通讯终端、一种触摸屏的制备方法 - Google Patents

一种触摸屏及移动通讯终端、一种触摸屏的制备方法 Download PDF

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Publication number
WO2016176927A1
WO2016176927A1 PCT/CN2015/087572 CN2015087572W WO2016176927A1 WO 2016176927 A1 WO2016176927 A1 WO 2016176927A1 CN 2015087572 W CN2015087572 W CN 2015087572W WO 2016176927 A1 WO2016176927 A1 WO 2016176927A1
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Prior art keywords
touch screen
touch
film layer
layer
protective glass
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PCT/CN2015/087572
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English (en)
French (fr)
Inventor
李源
程小鹏
吕以森
李志成
李建华
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信利光电股份有限公司
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Priority claimed from CN201520289457.9U external-priority patent/CN204557434U/zh
Priority claimed from CN201510228028.5A external-priority patent/CN104777941A/zh
Application filed by 信利光电股份有限公司 filed Critical 信利光电股份有限公司
Publication of WO2016176927A1 publication Critical patent/WO2016176927A1/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

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  • the present invention relates to the field of touch display technologies, and more particularly to a touch screen and a mobile communication terminal and a method for preparing the touch screen.
  • the touch screen of a smart phone can be roughly divided into three parts, from top to bottom, respectively, a protective glass, a touch screen, and a display screen. These three parts need to be fitted together, generally requiring two fits in the protective glass and One fit between the touch screens, and another fit between the display and the touch screen.
  • TOL touch screen and OGS touch screen are widely used in TP (touch screen) industry.
  • OGS technology integrates touch screen and protective glass, ITO conductive layer is coated on the inside of protective glass, and coating and lithography are directly formed on protective glass to form touch screen line.
  • the pattern, the touch screen pattern includes a plurality of touch sensors, which can realize the touch function, and the screen of the display terminal can be made thinner and lower in cost by saving a piece of glass and one-time fit.
  • TOL touch screen refers to a single-chip embedded touch screen product made by small OGS production line equipment. TOL products need to first shape and six-sided steel, and then make patterns, and the strength performance is superior to OGS. Both OGS and TOL are technologies for directly forming conductive films and sensors on protective glass during the process. A piece of glass serves the dual function of protecting glass and touch sensors.
  • the touch screen line pattern is formed directly on the protective glass, if the protective glass It is a curved tempered glass, and it is very difficult to form a touch screen line pattern on the surface thereof. Therefore, a touch screen with a curved surface or a special-shaped structure cannot be produced. If the touch function is lost after the TOL or OGS touch screen is broken, the use of the touch screen cannot be continued, resulting in the practicality and utilization of the touch screen. The rate is reduced.
  • the protective glass and touch screen circuit patterns are integrated, it is usually necessary to first strengthen, then coat, etch, and finally cut, so that cutting on the tempered glass is very troublesome, high in cost, low in yield, and caused by glass edges. Some capillary cracks are formed, which reduce the strength of the glass. At present, insufficient strength has become an important factor restricting the development of TOL or OGS touch screens.
  • the protective glass is a curved tempered glass, it is very difficult to form a sensor pattern directly on the surface thereof due to production equipment and processes, and thus it is impossible to produce a curved or profiled touch screen.
  • a first aspect of the present invention provides a touch screen such that the touch screen is not limited by the shape of the protective glass while improving the strength of the touch screen.
  • a second aspect of the present invention provides a method of fabricating a touch panel capable of producing a curved or profiled touch screen that is not limited by the size and shape of the protective glass.
  • the present invention adopts the following technical solutions:
  • a touch screen comprising:
  • the touch film layer is provided with a touch screen line pattern, and the touch film layer is disposed between the adhesive double-sided adhesive layer and the display screen.
  • the protective glass is a protective glass with a curved surface.
  • the adhesive double-sided adhesive layer is an OCA solid transparent optical adhesive, a LOCA liquid transparent optical adhesive or an OCR optical transparent resin, and the thickness range of the OCA solid transparent optical adhesive, LOCA liquid transparent optical adhesive or OCR optical transparent resin It is from 20 ⁇ m to 75 ⁇ m.
  • the touch film layer is a PI film and has a thickness ranging from 2 ⁇ m to 10 ⁇ m.
  • the touch screen is a flexible touch screen or a hard touch screen.
  • a mobile communication terminal comprising the touch screen of any of the above.
  • a method for preparing a touch screen comprising:
  • the touch film layer is adhered to a protective glass of a predetermined size and shape to form a touch screen.
  • the protective glass is a protective glass with a curved surface.
  • the touch film layer is adhered to the protective glass of a predetermined size and shape through an adhesive layer.
  • the adhesive layer is an OCA solid transparent optical adhesive, a LOCA liquid transparent optical adhesive or an OCR optical transparent resin, and has a thickness ranging from 20 ⁇ m to 75 ⁇ m.
  • the release layer is an organic or inorganic insulating protective layer and has a thickness ranging from 0.1 ⁇ m to 100 ⁇ m.
  • the insulating film layer is a PI film and has a thickness ranging from 2 ⁇ m to 10 ⁇ m.
  • the touch screen is a flexible touch screen or a hard touch screen.
  • the present invention has the following beneficial effects:
  • the touch function of the screen is not limited by whether the protective glass is flat or curved, and is protected by the prior art.
  • the surface of the glass needs to pass through a multi-pass process such as high temperature, low temperature, strong acid and strong alkali, etc., and the strength of the protective glass is reduced after the process.
  • the present invention does not etch the touch screen line pattern on the protective glass, but will be provided with The touch film layer of the touch screen line pattern is adhered to the lower surface of the protective glass without damaging the strength of the protective glass, so that the strength of the touch screen is enhanced relative to the strength of the touch screen in the prior art.
  • the touch screen provided by the present invention, by preparing a touch film layer provided with a touch screen line pattern and bonding with the protective glass to realize the touch function of the screen, the strength of the protective glass is not damaged during the process, so that the touch screen strength is relatively The touch screen strength in the prior art is enhanced.
  • the insulating film layer can be peeled off from the substrate as a flexible substrate carrying the touch screen line pattern, that is, The touch film layer can be peeled off from the substrate, and the touch thin layer
  • the film layer is adhered to the surface of the protective glass of the preset size and shape, so that the shape of the protective glass is not limited.
  • a preset touch screen line pattern can be formed on the curved protective glass surface to solve the problem. The problem that the curved screen cannot be prepared in the prior art.
  • FIG. 1 is a schematic diagram of a touch screen provided by the prior art
  • FIG. 2 is a schematic diagram of a touch screen according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of another touch screen according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic diagram of a method for preparing a touch screen according to an embodiment of the present invention.
  • FIG. 1 is a schematic diagram of a touch screen provided by the prior art
  • FIG. 2 is a schematic diagram of a touch screen according to an embodiment of the present invention
  • the touch screen is schematic.
  • the surface of the protective glass provided with the BM/WM film is provided with an ITO conductive layer, and the surface of the ITO conductive layer is photolithographically formed to form a touch screen line pattern to form a protective glass provided with a touch screen line pattern.
  • the display screen 102 is attached to the surface of the cover glass 101 provided with the touch screen line pattern. Since the touch screen line pattern is integrated with the cover glass, the screen in the prior art is broken, the touch function is lost, and the use cannot be continued.
  • Touch screen line patterns cannot be formed directly on the protective glass of curved or profiled structures, and TOL or OGS of curved or profiled structures cannot be prepared.
  • the screen has a small falling ball strength of less than 50 cm, and at the same time, the underlying problem of the touch screen pattern cannot be effectively solved.
  • a touch screen when the protective glass is a protective glass whose surface is a planar structure, a touch screen includes: a protective glass 201; and is used for bonding the protective glass 201 and the touch film layer
  • the adhesive double-sided adhesive layer 202 of the 203 is disposed on the lower surface of the protective glass 201; the touch film layer 203 provided with the touch screen circuit pattern is disposed on the adhesive double-sided adhesive layer 202
  • the display screen 204 is located on the lower surface of the touch film layer 203.
  • the cover glass 201 is usually a cover glass provided with a BM/WM film thickness of about 0.3 mm to 0.4 mm.
  • the adhesive double-sided adhesive layer 202 is preferably an OCA solid transparent optical adhesive, a LOCA liquid transparent optical adhesive or an OCR optically transparent resin, and may also be other adhesive double-sided adhesive layers, all within the protection range.
  • the thickness of the adhesive double-sided adhesive layer 202 is preferably in the range of 20 ⁇ m to 75 ⁇ m, and may be other thicknesses, all within the protection range.
  • the touch film layer 203 is preferably a PI film.
  • the thickness of the PI film is preferably in the range of 2 ⁇ m to 10 ⁇ m, that is, the touch film line pattern is formed on the surface of the PI film to form the touch film layer 203. Since the touch film layer is composed of a PI film and a touch screen circuit pattern, it can be peeled off from the large glass and pasted on the flexible substrate. Since the touch film layer 203 itself is not sticky, it is connected by the adhesive double-sided tape 202. The contact control film layer 203 and the cover glass 201 are separated from each other, so that the touch function of the screen is not restricted by the shape of the cover glass 201. At the same time, the touch film layer 203 and the cover glass 201 are used in the present invention. In the process of bonding, the strength of the protective glass 201 is not damaged in the process, so that the strength of the touch screen is enhanced relative to the strength of the touch screen in the prior art.
  • the difference from the previous embodiment is that the embodiment only changes the shape of the cover glass 201.
  • the cover glass 201 has a curved surface.
  • the cover glass can still be attached to the touch film layer 203 provided with the touch screen line pattern by the adhesive double-sided tape 202 on the surface of the cover glass 201, so that the protection glass 201 can still be touched when it is curved or shaped.
  • the function is to prepare the screen of the mobile communication terminal with a curved surface, and the rest of the structure is the same as the touch screen with a flat surface.
  • an IM erasing film may be disposed between the adhesive double-sided adhesive layer 202 and the touch film layer 203 for eliminating the shadow of the touch screen line pattern on the touch film layer 203.
  • the screen can be made into a standard-shaped screen without being restricted by whether the protective glass is flat or curved.
  • the surface of the prior art protection glass etches the line pattern of the touch screen after high temperature coating and baking, and the strong acid and alkali, the strength of the touch screen is lowered, and the present invention does not directly etch the line pattern of the touch screen on the protective glass.
  • the touch film layer 203 provided with the line pattern of the touch screen is pasted on the lower surface of the cover glass 201 through the adhesive double-sided adhesive layer 202 without damaging the strength of the cover glass 201, so that the strength of the screen of the mobile communication terminal is relatively high.
  • the screen strength is increased, and the falling ball strength of the present invention is increased to about 60 cm. Since the touch film layer 203 is separated from the cover glass 201, even if the cover glass is broken, the touch function is still effective, and the underlying problem of the line pattern of the touch screen is effectively solved.
  • touch screen described above may be a flexible touch screen or a hard touch screen.
  • the invention also provides a mobile communication terminal comprising the above touch screen.
  • the screen of the mobile communication terminal can be a screen with a curved surface. Even if the screen of the mobile communication terminal is broken, the touch function is still effective, and the screen of the mobile communication terminal has a strong falling ball strength.
  • the touch function is completely ineffective after the protective glass is broken, resulting in a decrease in the usability and utilization of the touch screen.
  • the protective glass and the touch screen are integrated, it is usually necessary to first strengthen, then coat, etch, and finally cut, so that cutting on the tempered glass is very troublesome, high cost, low yield, and some glass edges are formed. Capillary cracks, which reduce the strength of the glass, and the stress of each layer will reduce the falling strength of TOL/OGS by more than three times.
  • the ITO pattern base problem of low-impedance TOL/OGS screens has not been effectively improved.
  • the invention provides a method for preparing a touch screen. As shown in FIG. 4, the preparation method comprises the following steps:
  • Step S401 providing a substrate, forming a release layer on a surface of the substrate.
  • the substrate is a large tempered or non-tempered substrate, which facilitates the formation of a large area of the touch film layer on the substrate.
  • Step S402 forming an insulating film layer on the surface of the release layer.
  • the insulating film layer is a PI film having a thickness ranging from 2 ⁇ m to 10 ⁇ m.
  • a layer of liquid PI material is coated on the surface of the release layer, and is thermally cured to form a highly transparent PI film, which is firmly adhered to the surface of the large substrate, in order to form a preset touch screen line pattern on the PI film.
  • Step S403 forming a preset touch screen line pattern on the surface of the insulating film layer to form a touch film layer, the touch film layer is for receiving a touch signal, and the touch film layer comprises a plurality of touch sensors.
  • a preset touch screen line pattern is formed on the surface of the PI film to form a touch film layer, and a single-sided UV tape is attached to the surface of the touch film layer, and is punched by a laser or a die.
  • the large touch film layer is divided into a single pattern of touch film layers to facilitate matching with a variety of sizes and shapes of protective glass.
  • Step S404 peeling off the touch film layer, and manually or automatically peeling off the single pattern of the touch film layer from the large substrate.
  • Step S405 the touch film layer is adhered to a protective glass of a predetermined size and shape to form a touch screen.
  • the protective glass is a tempered glass with a BM film on the surface, which is the outermost protective layer on the screen.
  • the protective glass can be of a standard shape or a profiled structure and can carry the touch film layer.
  • the release layer may be an organic insulating protective layer, which may also be an inorganic insulating protective layer having a thickness ranging from 0.1 ⁇ m to 100 ⁇ m.
  • the release layer is usually made of an organic insulating layer such as PI polyimide or OC or an inorganic insulating protective layer such as DBL, so that the insulating film layer and the large substrate are easily peeled off.
  • the adhesive layer is OCA solid transparent optical adhesive, LOCA liquid transparent optical adhesive or OCR optical transparent resin, and the thickness ranges from 20 ⁇ m to 75 ⁇ m.
  • the invention prepares a preset touch screen line pattern on the surface of the insulating film layer through the substrate to form a touch film layer, the touch film layer is flexible, can be peeled off from the substrate, and is attached to the protective glass of a preset size and shape.
  • the surface is thus not limited by the size of the protective glass.
  • a predetermined touch screen line pattern can be formed on the curved protective glass surface, which solves the problem that the curved screen cannot be prepared in the prior art.
  • the invention does not directly etch the line pattern of the touch screen on the protective glass, but pastes the touch film layer carrying the line pattern of the touch screen on the surface of the protective glass, and does not pass the strong alkali strong acid etching process in the preparation process.
  • the strength of the protective glass is not damaged, so that the strength of the touch screen is enhanced relative to the screen strength in the prior art, and the falling ball strength is significantly increased.
  • the touch function is still effective, and the underlying problem of the ITO pattern is effectively solved.
  • the touch screen prepared by the touch screen described above may be a flexible touch screen or a hard touch screen.

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Abstract

本发明提供了一种触摸屏及其制备方法，其中，触摸屏包括：保护玻璃；用于贴合所述保护玻璃和触控薄膜层的粘性双面胶层，所述粘性双面胶层设置于所述保护玻璃的下表面；设置有触摸屏线路图案的触控薄膜层，所述触控薄膜层设置于所述粘性双面胶层与显示屏之间。由于触摸屏线路图案在触控薄膜上，粘性双面胶层将保护玻璃和触控薄膜隔离开来，因此不受保护玻璃是否是平面还是曲面的限制，而本发明将设置有触摸屏线路图案的触控薄膜层粘贴在保护玻璃的表面，并没有破坏保护玻璃的强度，有利于提高触摸屏的强度。此外，本发明还提供了一种移动通讯终端。

Description

一种触摸屏及移动通讯终端、一种触摸屏的制备方法
本申请要求于2015年05月6日提交中国专利局、申请号为201520289457.9、发明名称为“一种触摸屏及移动通讯终端”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
本申请还要求于2015年05月6日提交中国专利局、申请号为201510228028.5、发明名称为“一种触摸屏的制备方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及触摸显示技术领域，更具体地说，涉及一种触摸屏及移动通讯终端以及一种触摸屏的制备方法。
背景技术
目前，智能手机的触摸屏可以大致分成3个部分，从上到下分别是保护玻璃，触摸屏、显示屏，这三部分是需要进行贴合的，一般来说需要两次贴合，在保护玻璃与触摸屏之间进行一次贴合，而另一次的贴合则是在显示屏与触摸屏之间。TOL触摸屏和OGS触摸屏在TP(触摸屏)行业中应用广泛，OGS技术就是把触摸屏与保护玻璃集成在一起，在保护玻璃内侧镀上ITO导电层，直接在保护玻璃上进行镀膜和光刻形成触摸屏线路图案，触摸屏图案包括了多个触摸传感器，能够实现触摸功能，由于节省了一片玻璃和一次贴合，显示终端的屏幕能够做的更薄且成本更低。TOL触摸屏指利用小片OGS产线设备制作的单片嵌入式触摸屏产品，TOL产品需要先进行外形切割和六面钢化，再制作图案，强度性能比OGS更优越。OGS和TOL在制程中均是在保护玻璃上直接形成导电膜及传感器的技术，一块玻璃同时起到保护玻璃和触摸传感器的双重作用。
然而，正是由于在保护玻璃上直接形成了触摸屏线路图案，如果保护玻璃 是弯曲的钢化玻璃，则在其表面形成触摸屏线路图案非常困难，因此无法制作曲面或异型结构的触摸屏，如果TOL或者OGS触摸屏破裂后，触摸功能丧失，无法继续使用，导致触摸屏的实用性和利用率降低。同时，由于保护玻璃和触摸屏线路图案是集成在一起的，通常需要先强化，然后镀膜、蚀刻，最后切割，这样在强化玻璃上切割是非常麻烦的，成本高、良率低，并且造成玻璃边沿形成一些毛细裂缝，这些裂缝降低了玻璃的强度，目前强度不足成为制约TOL或OGS触摸屏发展的重要因素。
另外，如果保护玻璃是弯曲的钢化玻璃，由于生产设备及工艺等原因，在其表面直接形成传感器图案非常困难，因此无法制作曲面或异型结构的触摸屏。
发明内容
为解决上述技术问题，本发明的第一方面提供了一种触摸屏，以使触摸屏不受保护玻璃形状的限制，同时提高触摸屏的强度。
本发明的第二方面提供了一种触摸屏的制备方法，其能够制备曲面或异型结构的触摸屏，不受保护玻璃尺寸及形状的限制。
为了解决上述技术问题，本发明采用了如下技术方案：
一种触摸屏，包括：
保护玻璃；
用于贴合所述保护玻璃和触控薄膜层的粘性双面胶层，所述粘性双面胶层设置于所述保护玻璃的下表面；
设置有触摸屏线路图案的触控薄膜层，所述触控薄膜层设置于所述粘性双面胶层与显示屏之间。
可选地，所述保护玻璃为表面呈曲面的保护玻璃。
可选地，所述粘性双面胶层为OCA固态透明光学胶、LOCA液态透明光学胶或OCR光学透明树脂，所述OCA固态透明光学胶、LOCA液态透明光学胶或OCR光学透明树脂的厚度范围为20μm-75μm。
可选地，所述触控薄膜层为PI膜，厚度范围为2μm-10μm。
可选地，所述触摸屏为柔性触摸屏或硬性触摸屏。
一种移动通讯终端，，包括上述任一项所述的触摸屏。
一种触摸屏的制备方法，包括：
提供一基板，在所述基板的表面形成离型层；
在所述离型层的表面形成绝缘薄膜层；
在所述绝缘薄膜层表面制作预设的触摸屏线路图案，形成触控薄膜层；
剥离所述触控薄膜层；
所述触控薄膜层与预设尺寸与形状的保护玻璃贴合，形成触摸屏。
可选地，所述保护玻璃为表面呈曲面的保护玻璃。
可选地，所述触控薄膜层与预设尺寸与形状的保护玻璃通过粘胶层贴合。
可选地，所述粘胶层为OCA固态透明光学胶、LOCA液态透明光学胶或OCR光学透明树脂，厚度范围为20μm-75μm。
可选地，所述离型层为有机或无机绝缘保护层，厚度范围为0.1μm-100μm。
可选地，所述绝缘薄膜层为PI膜，厚度范围为2μm-10μm。
可选地，所述触摸屏为柔性触摸屏或硬性触摸屏。
相较于现有技术，本发明具有以下有益效果：
利用本发明提供的触摸屏时，由于粘性双面胶层将保护玻璃和触控薄膜层隔离开来，使得屏幕的触摸功能不受保护玻璃是否是平面还是曲面的限制，同时由于现有技术中保护玻璃的表面在刻蚀触摸屏线路图案时需要经过高温低温强酸强碱等多道制程，制程之后保护玻璃的强度降低，而本发明并没有在保护玻璃上刻蚀触摸屏线路图案，而是将设置有触摸屏线路图案的触控薄膜层粘贴在保护玻璃的下表面，并没有破坏保护玻璃的强度，使得触摸屏强度相对现有技术中的触摸屏强度增强。
此外，本发明提供的触摸屏中，通过制备设置有触摸屏线路图案的触控薄膜层，与保护玻璃贴合来实现屏幕的触控功能，在制程中并没有破坏保护玻璃的强度，使得触摸屏强度相对现有技术中的触摸屏强度增强。
此外，通过本发明提供的一种触摸屏的制备方法，通过将预设的触摸屏线路图案形成在绝缘薄膜层的表面，绝缘薄膜层作为承载触摸屏线路图案的柔性衬底能够从基板上剥离下来，即触控薄膜层能够从基板上剥离下来，将触控薄 膜层贴合在预设尺寸和形状的保护玻璃表面，如此不受保护玻璃形状尺寸的限制，当保护玻璃的表面弯曲时，也能够在弯曲的保护玻璃表面形成预设的触摸屏线路图案，解决了现有技术中无法制备弯曲屏幕的问题。
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，还可以根据提供的附图获得其他的附图。
图1为现有技术提供的一种触摸屏示意图；
图2为本发明实施例提供的一种触摸屏示意图；
图3为本发明实施例提供的另一种触摸屏示意图；
图4为本发明实施例提供的一种触摸屏的制备方法示意图。
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、图2以及图3，图1为现有技术提供的一种触摸屏示意图；图2为本发明实施例提供的一种触摸屏示意图；图3为本发明实施例提供的另一种触摸屏示意图。
现有技术中，如图1所示，设置有BM/WM膜的保护玻璃的表面设置有ITO导电层，在ITO导电层表面进行光刻形成触摸屏线路图案，形成设置有触摸屏线路图案的保护玻璃101，在设置有触摸屏线路图案的保护玻璃101的表面贴合显示屏102，由于触摸屏线路图案与保护玻璃集成一体，因此现有技术中的屏幕破裂后，丧失触摸功能，无法继续使用，并且在曲面或者异型结构的保护玻璃上无法直接形成触摸屏线路图案，无法制备曲面或异型结构的TOL或者OGS 屏幕，落球强度较小，不足50cm，同时，无法有效解决触摸屏图案的底影问题。
在一种具体实施方式中，如图2所示，当保护玻璃为表面为平面结构的保护玻璃时，一种触摸屏包括：保护玻璃201；用于贴合所述保护玻璃201和触控薄膜层203的粘性双面胶层202，所述粘性双面胶层202设置于所述保护玻璃201的下表面；设置有触摸屏线路图案的触控薄膜层203，设置于所述粘性双面胶层202与显示屏204之间，显示屏204位于触控薄膜层203下表面。
保护玻璃201通常为设置有BM/WM膜厚度约为0.3mm～0.4mm的保护玻璃。粘性双面胶层202优选为OCA固态透明光学胶、LOCA液态透明光学胶或OCR光学透明树脂，也可以为其它具有粘性的双面胶层，均在保护范围之内。粘性双面胶层202的厚度范围优选为20μm-75μm，也可以为其它厚度，均在保护范围之内。触控薄膜层203优选为PI膜，PI膜的厚度范围优选为2μm-10μm，即在PI膜表面设置有触摸屏线路图案形成触控薄膜层203。由于触控薄膜层由PI膜及触摸屏线路图案构成，因此可以从大玻璃上揭下来，粘贴在柔性衬底上，由于触控薄膜层203本身不具有粘性，因此利用粘性双面胶202来连接触控薄膜层203与保护玻璃201，使得保护玻璃201与触控薄膜层203隔离，因此使得屏幕的触摸功能不受保护玻璃201形状限制，同时，本发明将触控薄膜层203与保护玻璃201贴合，制程中并没有破坏保护玻璃201的强度，使得触摸屏强度相对现有技术中的触摸屏强度增强。
在另一种具体实施方式中，如图3所示，与上一种具体实施方式不同之处在于本实施方式仅改变了保护玻璃201的形状，在本实施方式中保护玻璃201为表面呈曲面的保护玻璃，在呈曲面的保护玻璃201表面依然能够利用粘性双面胶202将设置有触摸屏线路图案的触控薄膜层203进行贴合，实现了保护玻璃201为曲面或者异型时依旧能够实现触摸功能，从而制备表面呈曲面的移动通讯终端的屏幕，其余结构与表面呈平面的触摸屏相同。
进一步地，可以在粘性双面胶层202与触控薄膜层203之间设置IM消影膜，用于消除触控薄膜层203上的触摸屏线路图案的底影。
由于粘性双面胶层202将保护玻璃201和触控薄膜层203隔离开来，使得屏幕不受保护玻璃是否是平面还是曲面的限制，能够制作标准形状的屏幕，也可 以制作异型结构的屏幕。由于现有技术保护玻璃的表面刻蚀触摸屏的线路图案时经过高温镀膜和烘烤，以及强酸强碱之后，触摸屏的强度降低，而本发明并没有在保护玻璃上直接刻蚀触摸屏的线路图案，而是将设置有触摸屏的线路图案的触控薄膜层203通过粘性双面胶层202粘贴在保护玻璃201的下表面，并没有破坏保护玻璃201的强度，使得移动通讯终端的屏幕的强度相对现有技术中的屏幕强度增强，本发明的落球强度增加到约为60cm。由于触控薄膜层203与保护玻璃201分离开来，因此即使保护玻璃破裂，触摸功能依然有效，同时有效解决的触摸屏的线路图案的底影问题。
需要说明的是，上述所述的触摸屏可以为柔性触摸屏，也可以为硬性触摸屏。
本发明还提供了一种移动通讯终端，包括上述的触摸屏。移动通讯终端的屏幕可以为表面为曲面的屏幕，即使移动通讯终端的屏幕碎裂，触摸功能依然有效，同时移动通讯终端的屏幕具有较强的落球强度。
此外，现有技术中，由于保护玻璃和传感器图案即触摸屏线路图案集成一体，因此屏幕在保护玻璃破裂后，触摸功能会彻底失效，导致触摸屏的实用性和利用率降低。同时，由于保护玻璃和触摸屏是集成在一起的，通常需要先强化，然后镀膜、蚀刻，最后切割，这样在强化玻璃上切割是非常麻烦的，成本高、良率低，并且造成玻璃边沿形成一些毛细裂缝，这些裂缝降低了玻璃的强度，各膜层的应力会使得TOL/OGS的落球强度下降3倍以上。另外，低阻抗的TOL/OGS屏幕的ITO图案底影问题一直无法有效改善。
本发明提供了一种触摸屏的制备方法，如图4所示，该制备方法包括如下步骤：
步骤S401：提供一基板，在所述基板的表面形成离型层。基板为大片钢化或非钢化基板，便于在基板之上形成大面积的触控薄膜层。
步骤S402：在所述离型层的表面形成绝缘薄膜层。本实施例中，绝缘薄膜层为PI膜，厚度范围为2μm-10μm。在离型层的表面涂布一层液态PI材料，并通过热固化成为一层高透明的PI膜，牢固的附着在大片基板表面，目的是在PI膜上形成预设的触摸屏线路图案。
步骤S403：在所述绝缘薄膜层表面制作预设的触摸屏线路图案，形成触控薄膜层，触控薄膜层用于接收触摸信号，触控薄膜层包括多个触摸传感器。利用大片OGS制程，在PI膜表面完成预设的触摸屏线路图案的制作，形成触控薄膜层，将一张单面UV胶带贴附在触控薄膜层表面，利用激光或模具冲切的方式，将大片触控薄膜层分割为单个图案的触控薄膜层，便于与多种尺寸和形状的保护玻璃匹配。
步骤S404：剥离所述触控薄膜层，采用手工或自动的方式将单个图案的触控薄膜层从大片基板上面剥离下来。
步骤S405：所述触控薄膜层与预设尺寸与形状的保护玻璃贴合，形成触摸屏。保护玻璃为表面设置有BM膜的钢化玻璃，是屏幕中的最外保护层，当保护玻璃的表面呈曲面时，由于触控薄膜层是柔性，因此能够与表面为曲面的保护玻璃进行贴合，保护玻璃可以为标准形状或者是异型结构，均能够承载触控薄膜层。离型层可以为有机绝缘保护层，其也可以为无机绝缘保护层，厚度范围为0.1μm-100μm。作为本发明的更具体实施例，离型层通常选用PI聚酰亚胺或OC等有机绝缘层或者采用DBL等无机绝缘保护层，目的是使得绝缘薄膜层与大片基板容易剥离。粘胶层为OCA固态透明光学胶、LOCA液态透明光学胶或OCR光学透明树脂，厚度范围为20μm-75μm。
本发明通过基板将预设的触摸屏线路图案制备在绝缘薄膜层的表面，形成触控薄膜层，触控薄膜层为柔性，能够从基板上剥离下来，贴合在预设尺寸和形状的保护玻璃表面，如此不受保护玻璃形状尺寸的限制，当保护玻璃的表面弯曲时，也能够在弯曲的保护玻璃表面形成预设的触摸屏线路图案，解决了现有技术中无法制备弯曲屏幕的问题。本发明并没有在保护玻璃上直接刻蚀触摸屏的线路图案，而是将承载有触摸屏的线路图案的触控薄膜层粘贴在保护玻璃的表面，在制备过程中没有经过强碱强酸等刻蚀过程，因此没有破坏保护玻璃的强度，使得触摸屏的强度相对现有技术中的屏幕强度增强，落球强度明显增加。同时即使保护玻璃破裂，触摸功能依然有效，也有效解决ITO图案的底影问题。
需要说明的是，上述所述的触摸屏制备出的触摸屏可以为柔性触摸屏，也可以为硬性触摸屏。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (13)

  1. 一种触摸屏，其特征在于，包括：
    保护玻璃；
    用于贴合所述保护玻璃和触控薄膜层的粘性双面胶层，所述粘性双面胶层设置于所述保护玻璃的下表面；
    设置有触摸屏线路图案的触控薄膜层，所述触控薄膜层设置于所述粘性双面胶层与显示屏之间。
  2. 如权利要求1所述的触摸屏，其特征在于，所述保护玻璃为表面呈曲面的保护玻璃。
  3. 如权利要求1或2所述的触摸屏，其特征在于，所述粘性双面胶层为OCA固态透明光学胶、LOCA液态透明光学胶或OCR光学透明树脂，所述OCA固态透明光学胶、LOCA液态透明光学胶或OCR光学透明树脂的厚度范围为20μm-75μm。
  4. 如权利要求1或2所述的触摸屏，其特征在于，所述触控薄膜层为PI膜，厚度范围为2μm-10μm。
  5. 根据权利要求1或2所述的触摸屏，其特征在于，所述触摸屏为柔性触摸屏或硬性触摸屏。
  6. 一种移动通讯终端，其特征在于，包括如权利要求1-5任一项所述的触摸屏。
  7. 一种触摸屏的制备方法，其特征在于，包括：
    提供一基板，在所述基板的表面形成离型层；
    在所述离型层的表面形成绝缘薄膜层；
    在所述绝缘薄膜层表面制作预设的触摸屏线路图案，形成触控薄膜层；
    剥离所述触控薄膜层；
    所述触控薄膜层与预设尺寸与形状的保护玻璃贴合，形成触摸屏。
  8. 如权利要求7所述的方法，其特征在于，所述保护玻璃为表面呈曲面的保护玻璃。
  9. 如权利要求7或8所述的方法，其特征在于，所述触控薄膜层与预设 尺寸与形状的保护玻璃通过粘胶层贴合。
  10. 如权利要求9所述的方法，其特征在于，所述粘胶层为OCA固态透明光学胶、LOCA液态透明光学胶或OCR光学透明树脂，厚度范围为20μm-75μm。
  11. 如权利要求7或8所述的方法，其特征在于，所述离型层为有机或无机绝缘保护层，厚度范围为0.1μm-100μm。
  12. 如权利要求7或8所述的方法，其特征在于，所述绝缘薄膜层为PI膜，厚度范围为2μm-10μm。
  13. 根据权利要求7或8所述的方法，其特征在于，所述触摸屏为柔性触摸屏或硬性触摸屏。
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CN101650622A (zh) * 2009-08-18 2010-02-17 城步鼎盛微电子科技有限公司 电容式触摸屏贴合工艺
CN102033672A (zh) * 2010-10-13 2011-04-27 深圳欧菲光科技股份有限公司 单层电极的电容式触摸屏
CN102279682A (zh) * 2011-08-30 2011-12-14 深圳市豪威薄膜技术有限公司 新型电容式触摸屏及其制造方法和触摸屏终端
CN104777941A (zh) * 2015-05-06 2015-07-15 信利光电股份有限公司 一种触摸屏的制备方法
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CN110413157A (zh) * 2019-08-08 2019-11-05 汕头超声显示器技术有限公司 一种带有凹凸触控键的电容触摸屏
CN113442623A (zh) * 2020-03-24 2021-09-28 三得应用材料（深圳）有限公司 一种手机前盖bm条贴附方法及bm条辅助贴附装置
CN113442623B (zh) * 2020-03-24 2023-01-24 东莞三得应用材料有限公司 一种手机前盖bm条贴附方法及bm条辅助贴附装置
CN113064527A (zh) * 2021-04-22 2021-07-02 成都伟大奇智能光电有限公司 一种民航应用高透光率的抗干扰型电阻触摸屏及制作方法
CN115993908A (zh) * 2022-12-27 2023-04-21 江苏纳美达光电科技有限公司 零贴合触控屏及触控屏的贴合方法
CN115993908B (zh) * 2022-12-27 2023-12-01 江苏纳美达光电科技有限公司 零贴合触控屏及触控屏的贴合方法

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