CN103543889A - Method for manufacturing monolayer capacitive touch screen - Google Patents

Method for manufacturing monolayer capacitive touch screen Download PDF

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Publication number
CN103543889A
CN103543889A CN201210247213.5A CN201210247213A CN103543889A CN 103543889 A CN103543889 A CN 103543889A CN 201210247213 A CN201210247213 A CN 201210247213A CN 103543889 A CN103543889 A CN 103543889A
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touch screen
capacitive touch
making
individual layer
substrate
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CN103543889B (en
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陈鸿瑜
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Shenzhen Touchworks Optoelectronics Co ltd
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Abstract

The invention discloses a method for manufacturing a monolayer capacitive touch screen. The method includes the following steps that firstly, a PMMA substrate is provided; secondly, surface processing is performed on the PMMA substrate; thirdly, an ITO conducting film is electroplated on the PMMA substrate at a low temperature; fourthly, an electrode pattern and a conducting circuit are manufactured on the ITO conducting film; fifthly, forming processing is performed on the PMMA substrate; sixthly; an FPC is stuck to a circuit interface port of the PMMA substrate. Compared with the prior art, PMMA materials serve as the substrate in the method for manufacturing the monolayer capacitive touch screen, the low-temperature electroplating and low-temperature sticking technology is adopted in the processing technology, and therefore problems which frequently occur in the processing and manufacturing processes when the original PMMA materials serve as the substrate of the capacitive touch screen are solved. The monolayer capacitive touch screen made by the PMMA materials is easy to process, not prone to breaking and low in cost.

Description

Individual layer capacitive touch screen method for making
[technical field]
The present invention relates to a kind of capacitive touch screen method for making, particularly a kind of individual layer capacitive touch screen method for making.
[background technology]
General capacitance type touch-control panel; its structure is all the touch sensing layer (English: multiple stratification structure Touch Sensor), such structure is except increasing design difficulty and raising the cost also consuming time adopting under cover plate cover glass (or PET film).Because traditional Projected capacitive touch panel must be used 1~2 sheet glass, be made into touch sensing layer, add upper cover plate, cause complicated structure.Therefore, touch panel module manufacturer is just actively incorporated into surface cap by touch sensing, and hope can reduce material cost, reduce thickness and the weight of touch panel module.Therefore, research staff proposes the ultimate scheme of capacitance touching control, only with the cover glass of individual layer, just can complete the function of touch-control exactly.This by all touch sensing circuit-formings the mode on cover glass, can reach the lightest the thinnest structure, minimum material cost, minimum production equipment cost investment and maximum contact panel output capacity.Although there are different names in each touch-control module factory for this new processing procedure, comprise Touch on lens, one glass solution, window integrated sensor touch, direct patterned window etc., but these all belong to the method that touch sensing is incorporated into surface cap in fact.Each method has adopted 1 sheet glass, as the substrate of surface cap and touch sensing, referred to as " individual layer capacitive touch screen ".
It is reported, since 2011, many brand manufacturers such as NOKIA, Apple, Samsung etc., started requirement gentlier, thinner, the contact panel that more has cost competitiveness, this measure estimates to contribute to the acceleration of individual layer capacitive touch screen technology universal.The benefit of individual layer capacitive touch screen, is just that material cost is the most cheap, optical characteristics is best, weight is the lightest, therefore can use on non-display screen, as mirror, desk, window, vending machine, or replaces keyboard and various button.In application, take industrial, military, outdoor applications and external hanging type touch-control as main.
For example, yet there are many challenges in individual layer capacitive touch screen, be first to process rear plated film in exploitation, or first plated film aftertreatment.And fragmentation in strengthening process and scratch, the processing of printing surface be, the plated film Pattern of use, the impedance of conductive film, and and LCD Vcom layer between the problems such as capacitive coupling.Therefore, be necessary to provide a kind of new individual layer capacitance touch screen method for making.
[summary of the invention]
For overcoming the individual layer capacitive touch screen of prior art, make bad problem, the invention provides a kind of cost lower, the individual layer capacitive touch screen method for making that yield is higher.
The technical scheme of technical solution problem of the present invention is: a kind of individual layer capacitive touch screen method for making, and it comprises the following steps: step S1: a PMMA substrate is provided; Step S2: this PMMA substrate of surface treatment; Step S3: cold galvanising ITO conducting film is to this PMMA substrate; Step S4: make electrode pattern and conducting wire on ITO conducting film; Step S5: this PMMA substrate of forming processes; And step S6: bonding FPC is to the circuit interface end of this PMMA substrate.
Preferably, in step S3, this electroplating technology adopts the electroplating machine of low temperature to carry out, and the electroplating temperature of this electroplating machine is 200 ℃-250 ℃.
Preferably, wherein the electroplating temperature of this electroplating machine is 220 ℃ ± 5 ℃.
Preferably, in step S6, this FPC passes through a low temperature ACF material adhesive to substrate corresponding circuits interface end
Preferably, wherein the bonding temp of this low temperature ACF between 100 ℃-140 ℃.
Preferably, wherein the bonding temp of this low temperature ACF is 120 ℃ ± 5 ℃.
Preferably, in step S3, the ITO conducting film of this plating is one deck or two-layer.
Preferably, the ITO conducting film of this plating is one deck, and on ito thin film, the electrode pattern of moulding touch sensible is rhombus or strip; When the ITO of this plating conducting film is two-layer, on ito thin film, the electrode pattern of the touch sensible of moulding is netted.
Preferably, in step S4, this electrode pattern and conducting wire can be divided into two steps and complete, and wherein this conducting wire can complete by printing or etched technique.
Compared to prior art, individual layer capacitive touch screen method for making of the present invention is owing to having adopted PMMA material as substrate, thereby and in processing technology, utilize cold galvanising and low-temperature adhesion technology to overcome the problem that original PMMA material often occurs in processing and manufacturing process when as capacitance plate substrate, the individual layer capacitance touch screen handling ease that this PMMA material is made, is difficult for fragmentation and cost is lower.Meanwhile, the method for making of capacitive touch screen provided by the invention only needs ITO circuit of single-surface single-layer etching, the technological process relating to, and its yield can be improved greatly, and cost is reduced.In addition, because be one side etching cabling, simple photoetching production line can be produced this type of functional glass, has solved current capacitance touch screen and need to rely on the bottleneck that high photoetching production line is made.
[accompanying drawing explanation]
Fig. 1 is first embodiment of the invention individual layer capacitive touch screen method for making process flow diagram.
Fig. 2 is second embodiment of the invention individual layer capacitive touch screen method for making process flow diagram.
[embodiment]
In order to make object of the present invention, technical scheme and advantage are clearer, below in conjunction with drawings and Examples, the present invention are further elaborated.Should be appreciated that concrete case study on implementation described herein, only in order to explain the present invention, is not intended to limit the present invention.
Please refer to Fig. 1, is a kind of individual layer capacitance touch screen method for making that first embodiment of the invention provides, and it comprises the following steps:
Step S101: a PMMA substrate is provided, and wherein this substrate is PMMA (full name: Polymethy Methacrylate, Chinese: polymethyl methacrylate) material is made;
Step S102: this PMMA substrate of surface treatment;
Step S103: cold galvanising ITO conductive film is to this PMMA substrate, at the transparent conducting film of the plated surface last layer of substrate, it is ITO (full name: Indium Tin Oxides, Chinese: indium tin oxide), wherein this electroplating technology adopts cold galvanising board to carry out, the electroplating temperature of this electroplating machine is 200 ℃-250 ℃, wherein take 220 ℃ ± 5 ℃ be optimum temperature;
Step S104: on ITO conductive film, make electrode pattern, the electrode pattern of many touch sensibles of moulding on ITO conductive film, this pattern can be argyle design or strip pattern;
Step S105: make conducting wire on ITO conductive film, this circuit can be by printing or by this ITO conductive film of etching technique etching and moulding, and form circuit interface end in this PMMA substrate one end;
Step S106: this PMMA substrate of moulding,
Step S107: bonding (Bonding) FPC, utilize low temperature ACF (full name: Anisotropic Conductive Film, Chinese: anisotropic conductive film) FPC is bonded in to this PMMA substrate corresponding circuits interface end, wherein the bonding temp of this ACF is between 100 ℃-140 ℃, take 120 ℃ ± 5 ℃ as optimum temperature parameter, or can also be with general A
CF carries out FPC and substrate bonding, but the lower pad of a slice coefficient of heat conductivity on need to padding when high temperature bonding, as PET pad (full name: Polythylene terephthalate, Chinese: polyphenyl dioctyl phthalate glycol ester is thermoplastic polyester).
Compared to prior art, individual layer capacitive touch screen method for making of the present invention is owing to having adopted PMMA material as substrate, thereby and in processing technology, utilize cold galvanising and low-temperature adhesion technology to overcome the problem that original PMMA material often occurs in processing and manufacturing process when as capacitance plate substrate, the individual layer capacitance touch screen handling ease that this PMMA material is made, is difficult for fragmentation and cost is lower.Meanwhile, the method for making of capacitive touch screen provided by the invention only needs ITO circuit of single-surface single-layer etching, the technological process relating to, and its yield can be improved greatly, and cost is reduced.In addition, because be one side etching cabling, simple photoetching production line can be produced this type of functional glass, has solved current capacitance touch screen and need to rely on the bottleneck that high photoetching production line is made.
Please refer to Fig. 2, is another individual layer capacitance touch screen method for making that second embodiment of the invention provides, and it comprises the following steps:
Step S201: a PMMA substrate is provided, and wherein this substrate is PMMA (full name: Polymethy Methacrylate, Chinese: polymethyl methacrylate) material is made;
Step S202: this PMMA substrate of surface treatment;
Step S203: cold galvanising ITO conductive film is to this PMMA substrate, two-layer transparent conducting film on the plated surface of substrate, it is ITO (full name: Indium Tin Oxides, Chinese: indium tin oxide), wherein this electroplating technology adopts cold galvanising board to carry out, the electroplating temperature of this electroplating machine is 200 ℃-250 ℃, wherein take 220 ℃ ± 5 ℃ be optimum temperature;
Step S204: make electrode pattern and conducting wire on ITO conductive film, the electrode pattern of many touch sensibles of moulding and conducting wire on ITO conductive film, the electrode pattern of these many touch sensibles is net-like pattern, and this conducting wire forms circuit interface end in this PMMA substrate one end;
Step S205: this PMMA substrate of moulding, and
Step S206: bonding (Bonding) FPC, utilize low temperature ACF (full name: Anisotropic Conductive Film, Chinese: anisotropic conductive film) FPC is bonded in to this PMMA substrate corresponding circuits interface end, wherein the bonding temp of this ACF is between 100 ℃-140 ℃, take 120 ℃ ± 5 ℃ as optimum temperature parameter, or can also FPC and substrate be carried out bonding with general ACF, but the lower pad of a slice coefficient of heat conductivity on need to padding when high temperature bonding, as PET pad (full name: Polythylene terephthalate, Chinese: polyphenyl dioctyl phthalate glycol ester is thermoplastic polyester).
Compared to prior art, individual layer capacitive touch screen method for making of the present invention is owing to having adopted PMMA material as substrate, thereby and in processing technology, utilize cold galvanising and low-temperature adhesion technology to overcome the problem that original PMMA material often occurs in processing and manufacturing process when as capacitance plate substrate, the individual layer capacitance touch screen handling ease that this PMMA material is made, is difficult for fragmentation and cost is lower.Meanwhile, the method for making of capacitive touch screen provided by the invention only needs ITO circuit of single-surface single-layer etching, the technological process relating to, and its yield can be improved greatly, and cost is reduced.In addition, because be one side etching cabling, simple photoetching production line can be produced this type of functional glass, has solved current capacitance touch screen and need to rely on the bottleneck that high photoetching production line is made.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within principle of the present invention, are equal to and replace and within improvement etc. all should comprise protection scope of the present invention.

Claims (9)

1. an individual layer capacitive touch screen method for making, it comprises the following steps:
Step S1: a PMMA substrate is provided;
Step S2: this PMMA substrate of surface treatment;
Step S3: cold galvanising ITO conducting film is to this PMMA substrate;
Step S4: make electrode pattern and conducting wire on ITO conducting film;
Step S5: this PMMA substrate of forming processes; And
Step S6: bonding FPC is to the circuit interface end of this PMMA substrate.
2. individual layer capacitive touch screen method for making as claimed in claim 1, is characterized in that: in step S3, this electroplating technology adopts the electroplating machine of low temperature to carry out, and the electroplating temperature of this electroplating machine is 200 ℃-250 ℃.
3. individual layer capacitive touch screen method for making as claimed in claim 2, is characterized in that: wherein the electroplating temperature of this electroplating machine is 220 ℃ ± 5 ℃.
4. individual layer capacitive touch screen method for making as claimed in claim 1, is characterized in that: in step S6, this FPC passes through a low temperature ACF material adhesive to substrate corresponding circuits interface end.
5. individual layer capacitive touch screen method for making as claimed in claim 4, is characterized in that: wherein the bonding temp of this low temperature ACF is between 100 ℃-140 ℃.
6. individual layer capacitive touch screen method for making as claimed in claim 4, is characterized in that: wherein the bonding temp of this low temperature ACF is 120 ℃ ± 5 ℃.
7. individual layer capacitive touch screen method for making as claimed in claim 1, is characterized in that: in step S3, the ITO conducting film of this plating is one deck or two-layer.
8. individual layer capacitive touch screen method for making as claimed in claim 7, is characterized in that: the ITO conducting film of this plating is one deck, and on ito thin film, the electrode pattern of moulding touch sensible is rhombus or strip; When the ITO of this plating conducting film is two-layer, on ito thin film, the electrode pattern of the touch sensible of moulding is netted.
9. the individual layer capacitive touch screen method for making as described in claim 1-8 any one claim, it is characterized in that: in step S4, this electrode pattern and conducting wire can be divided into two steps and complete, and wherein this conducting wire can complete by printing or etched technique.
CN201210247213.5A 2012-07-17 2012-07-17 Monolayer capacitive touch screen preparation method Active CN103543889B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104680025A (en) * 2015-03-12 2015-06-03 重庆科技学院 Oil pumping unit parameter optimization method on basis of genetic algorithm extreme learning machine
CN109471554A (en) * 2018-09-10 2019-03-15 芜湖伦丰电子科技有限公司 A kind of single-layer membrane structure touch function piece, touch screen and touch electronic equipment
CN110568964A (en) * 2019-09-12 2019-12-13 业成科技(成都)有限公司 Sensor assembly, preparation method thereof, bonding structure and touch panel module
CN112698752A (en) * 2020-12-31 2021-04-23 深圳市中光电发展集团有限公司 Manufacturing method of high-stability touch screen with single-layer film structure

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CN1800439A (en) * 2004-11-25 2006-07-12 中央硝子株式会社 Base plate with ITO transparent conductive film and method for preparing same
CN101138059A (en) * 2005-03-08 2008-03-05 日本写真印刷株式会社 Touch panel unit
CN101661355A (en) * 2008-08-25 2010-03-03 时纬科技股份有限公司 Touch panel and manufacturing method thereof
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EP2312425A2 (en) * 2007-01-18 2011-04-20 Nitto Denko Corporation Transparent conductive film, method for production thereof and touch panel therewith
CN201903861U (en) * 2010-08-24 2011-07-20 昆山榕增光电科技有限公司 Electronic touch input device

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TWI344615B (en) * 2007-05-24 2011-07-01 J Touch Corp A single layer of touch sensor structure and a touch display panel using the same
TWI463452B (en) * 2009-04-21 2014-12-01 Ind Tech Res Inst Touch display apparatus and fabricating method thereof
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TW201214254A (en) * 2010-09-30 2012-04-01 xiang-yu Li Single-layer single-sided capacitive touch panel device
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CN1800439A (en) * 2004-11-25 2006-07-12 中央硝子株式会社 Base plate with ITO transparent conductive film and method for preparing same
CN101138059A (en) * 2005-03-08 2008-03-05 日本写真印刷株式会社 Touch panel unit
EP2312425A2 (en) * 2007-01-18 2011-04-20 Nitto Denko Corporation Transparent conductive film, method for production thereof and touch panel therewith
CN201540548U (en) * 2008-04-25 2010-08-04 苹果公司 Touch sensor panel and manufacturing system thereof as well as corresponding handheld electronic equipment
CN101661355A (en) * 2008-08-25 2010-03-03 时纬科技股份有限公司 Touch panel and manufacturing method thereof
CN201903861U (en) * 2010-08-24 2011-07-20 昆山榕增光电科技有限公司 Electronic touch input device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104680025A (en) * 2015-03-12 2015-06-03 重庆科技学院 Oil pumping unit parameter optimization method on basis of genetic algorithm extreme learning machine
CN109471554A (en) * 2018-09-10 2019-03-15 芜湖伦丰电子科技有限公司 A kind of single-layer membrane structure touch function piece, touch screen and touch electronic equipment
CN110568964A (en) * 2019-09-12 2019-12-13 业成科技(成都)有限公司 Sensor assembly, preparation method thereof, bonding structure and touch panel module
CN112698752A (en) * 2020-12-31 2021-04-23 深圳市中光电发展集团有限公司 Manufacturing method of high-stability touch screen with single-layer film structure

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TWI554928B (en) 2016-10-21
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