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 PDFInfo
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- 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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- touch screen
- touch
- film layer
- layer
- protective glass
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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
Definitions
- 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
Description
Claims (13)
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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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CN201520289457.9 | 2015-05-06 | ||
CN201510228028.5A CN104777941A (zh) | 2015-05-06 | 2015-05-06 | 一种触摸屏的制备方法 |
CN201520289457.9U CN204557434U (zh) | 2015-05-06 | 2015-05-06 | 一种触摸屏及移动通讯终端 |
CN201510228028.5 | 2015-05-06 |
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CN109885216A (zh) * | 2019-04-30 | 2019-06-14 | 惠州市慧联智显工业系统有限公司 | 一种单膜触控实现方式 |
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 |
CN111070822A (zh) * | 2018-10-18 | 2020-04-28 | 比亚迪股份有限公司 | 夹层玻璃及其制备方法、电子设备壳体和电子设备 |
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 |
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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 |
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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 |
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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 |
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