CN102279682B - The manufacture method of Novel capacitance type touch screen - Google Patents
The manufacture method of Novel capacitance type touch screen Download PDFInfo
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- CN102279682B CN102279682B CN201110252555.1A CN201110252555A CN102279682B CN 102279682 B CN102279682 B CN 102279682B CN 201110252555 A CN201110252555 A CN 201110252555A CN 102279682 B CN102279682 B CN 102279682B
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Abstract
The present invention is applicable to touch-screen production technical field, provides a kind of Novel capacitance type touch screen and manufacture method thereof and touch screen terminal; This Novel capacitance type touch screen comprises one deck face glass, also comprises the two-layer PET film structural member being coated with ITO conductive pattern layer and ag paste electrode, and described in two-layer described PET film structural member and one deck, face glass is fit together by optical cement successively; All not needing when making ITO pattern and perimeter leads in the capacitance plate manufacture process of this structure to adopt gold-tinted processing procedure, therefore can greatly reduce equipment investment and process costs, being conducive to applying of capacitance touch screen, thus replacing electric resistance touch screen on a large scale.
Description
Technical field
The invention belongs to touch-screen production technical field, more particularly, relate to a kind of manufacture method of Novel capacitance type touch screen.
Background technology
Along with consumption mobile communication equipment adopts digital form and integrated more function more and more, exploitation intuitively innovative user interface (UI) scheme becomes even more important.As a part for user interface design, projection-type capacitive touch screen contributes to tackling this challenge.On June 29th, 2007, the iPhone mobile phone attracted the attention of millions of people starts the contact panel upsurge of the another ripple of a ripple in the whole world, and also result in the significantly increase of touch-screen product in the application of consumption electronic products, every electronic product uses the permeability of contact panel also to improve rapidly.IPhone mobile phone uses capacitive touch screen.The use principle of Novel capacitance type touch screen is: the position judging finger touch point according to the electric capacitance change of contact area, can provide perfect support to complicated gestures such as multiple point touchings.Because induction to external world needs by the nonconducting dielectric medium of one deck (plastic cement, glass etc.), touch-screen needs to be fitted in the upper cover back side, so antijamming capability is to external world comparatively strong, reliability and durability high.Be the first-selected touch-screen kind of middle-size and small-size electronic product in the future, therefore the market demand of touch screen element is very large.
But refer to Fig. 1, the structure due to iPhone capacitance plate is so-called two-layer, namely sensor (Sensor) 1' that is made up of glass of a slice and one deck face glass 2', then uses optical cement 3'(or glue) laminating forms.The face glass 2' on upper strata is only protective effect and decoration function; what play function is sensor (Sensor) 1' part; and sensor (Sensor) 1' is the glass 11' of one piece of 0.55mm or 0.7mm thickness; two surperficial middle parts of glass have the ITO coating 12' being etched into figure all respectively; periphery is the lead-in wire 13' that the coating of Mo-Al-Mo is etched into wire, and touching signals can be derived by this lead-in wire 13'.
This kind of structure capacitive screen cause the technique that can only adopt TFT in its production run, i.e. so-called plated film-exposure-development-etch process.No matter this kind of technique is middle ITO diamond-shaped pattern pattern layer or the lead portion of periphery, all need to adopt so-called gold-tinted line, namely gold-tinted processing procedure must be had, the equipment funds of its gold-tinted processing procedure drop into greatly, and equipment debugging difficulty, equipment is very long from putting into the output cycle, causes Total Product high cost, and this is also capacitance plate not one of major reason replacing touch screens on a large scale.
Summary of the invention
Technical matters to be solved by this invention is the manufacture method providing a kind of Novel capacitance type touch screen, be intended to avoid the problem that the equipment funds bringing gold-tinted processing procedure to need because adopting Thin Film Transistor (TFT) (TFT) technique in its manufacturing process have high input, the output cycle is long, reduce the production cost of capacitance plate.
For solving the problems of the technologies described above, the technical scheme of employing of the present invention is
There is provided a kind of manufacture method of Novel capacitance type touch screen, this manufacture method comprises the following steps:
(1) on PET basement membrane, prepare one deck ITO conducting film, the square resistance of described ITO conducting film controls at 350 Ω/below;
(2) adopt screen printing technique to print on ITO conducting film and hide ink design layer;
(3) fall not by the ITO conducting film of ink covering part with acid etching;
(4) remove described covering ink design layer, form the ITO conductive pattern layer that capacitance plate needs;
(5) screen printing technique is adopted to print ag paste electrode and obtain PET film structural member;
(6) step described in two panels (5) being made the PET film structural member formed uses together with optics glue laminating with a slice face glass successively, forms the Novel capacitance type touch screen of structural integrity.
Preferably, in described step (1), the technique that PET basement membrane is prepared ITO conducting film is magnetron sputtering embrane method.
Particularly, in described step (2) and (4), the pattern of described covering ink logo and ITO conductive pattern layer is rhombus.
Preferably, in described step (6), the thickness of optical cement is 50 μm ~ 100 μm, transmittance is more than 95%.
Preferably, in described step (6), described face glass is special-shaped tempered glass.
The beneficial effect of Novel capacitance type touch screen manufacture method provided by the invention is: in manufacture method of the present invention, ITO patterned layer on ITO patterned layer on PET film (film) structural member in middle layer and PET film (film) structural member of lower floor is all stamp covering ink on the ITO conducting film of having one's face covered with, after the acid etching of unwanted place is got rid of, to remove again and hide ink and make, utilize the screen printing technique that equipment is relatively simple and cheap exactly, without the gold-tinted processing procedure that equipment investment is larger; The lead portion of being drawn by the electric signal of ITO conducting film is silver paste printing ink, also be that serigraphy processing is on material, a large amount of equipment funds that completely avoid needs described in gold-tinted processing procedure drop into, equipment debugging difficulty, input cycle are long, the problem of integral production high cost, greatly reduce its production cost, be conducive to applying of capacitance touch screen, thus replace electric resistance touch screen on a large scale.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of existing double glazing capacitive touch screen;
On PET basement membrane, the cross-sectional view after ITO conducting film is prepared in the step (1) of the Novel capacitance type touch screen manufacture method that Fig. 2 provides for the embodiment of the present invention;
On ITO conducting film, the cross-sectional view after hiding ink logo is printed in the step (2) of the Novel capacitance type touch screen manufacture method that Fig. 3 provides for the embodiment of the present invention;
Etch away not by the cross-sectional view after the ITO conducting film of ink logo covering part in the step (3) of the Novel capacitance type touch screen manufacture method that Fig. 4 provides for the embodiment of the present invention;
The cross-sectional view after hiding ink logo is removed in the step (4) of the Novel capacitance type touch screen manufacture method that Fig. 5 provides for the embodiment of the present invention;
The cross-sectional view of the PET film structural member formed after printing ag paste electrode in the step (5) of the Novel capacitance type touch screen manufacture method that Fig. 6 provides for the embodiment of the present invention;
The cross-sectional view of the Novel capacitance type touch screen obtained in the step (6) of the Novel capacitance type touch screen manufacture method that Fig. 7 provides for the embodiment of the present invention;
The plan structure schematic diagram of the Novel capacitance type touch screen that Fig. 8 provides for the embodiment of the present invention.
Embodiment
In order to make technical matters to be solved by this invention, technical scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Please refer to Fig. 7, now Novel capacitance type touch screen provided by the invention is described.Described Novel capacitance type touch screen, comprise one deck face glass 2, also comprise two-layer PET film (film) structural member 1 being coated with ITO conductive pattern layer 121 and ag paste electrode 14, described in two-layer described PET film (film) structural member 1 and one deck, face glass 2 is fit together by optical cement 3 successively.
Novel capacitance type touch screen provided by the invention is formed by three layers, topmost one deck is face glass 2, middle one deck is PET film (film) structural member 1 being coated with ITO conductive pattern layer 121 and ag paste electrode 14 of high permeability, bottom one deck is also be coated with PET film (film) structural member 1 that ITO leads pattern electric layer 121 and ag paste electrode 14, namely employing ITOfilm replaces the ITOglass in conventional capacitive touchscreen, and is bonded together with optical cement 3 between these three layers.The touch-screen of this kind of structure does not all need when making ITO pattern and perimeter leads in the fabrication process to adopt gold-tinted processing procedure, therefore a large amount of equipment funds that avoiding needs described in gold-tinted processing procedure drop into, equipment debugging difficulty, input cycle are long, the problem of integral production high cost, greatly reduce its production cost, be conducive to applying of capacitance touch screen, thus replace electric resistance touch screen on a large scale.
Further, as a kind of embodiment of Novel capacitance type touch screen manufacture method provided by the invention, the pattern of described ITO conductive pattern layer 121 is rhombus, so as to respond to preferably Y-direction or X to signal.
Preferably, as a kind of embodiment of Novel capacitance type touch screen manufacture method provided by the invention, the thickness of described optical cement 3 is 50 μm ~ 100 μm, transmittance is more than 95%, to ensure bonding permanance and to guarantee color and sufficient display brightness.
Preferably, as a kind of embodiment of Novel capacitance type touch screen manufacture method provided by the invention, described face glass 2 is special-shaped tempered glass, under same thickness, thicker than simple glass 4 ~ 5 times of tempered glass bending strength, impact strength than simple glass height at least 5 times, as touch panel, anti-zoned impact resistance is good, durable in use.
Present invention also offers a kind of manufacture method of Novel capacitance type touch screen described above, please in turn see Fig. 2 to Fig. 7, this manufacture method comprises the following steps:
(1) refer to Fig. 2, PET basement membrane 11 is prepared one deck ITO conducting film 12, the square resistance of described ITO conducting film 12 controls at 350 Ω/below;
(2) refer to Fig. 3, adopt screen printing technique to print on ITO conducting film 12 and hide ink design layer 13;
(3) refer to Fig. 4, fall not by the ITO conducting film 12 of ink covering part with acid etching;
(4) refer to Fig. 5, remove and hide ink logo 13, form the ITO conductive pattern layer 121 that capacitance plate needs;
(5) refer to Fig. 6, adopt screen printing technique print ag paste electrode 14 and obtain PET film (film) structural member 1;
(6) refer to Fig. 7, the PET film structural member 1 and a slice face glass 2 that step described in two panels (5) are made formation fit together with optical cement 3 successively, form the Novel capacitance type touch screen of structural integrity.Need carry out in ten thousand grades of dust free rooms in OCA optical cement 3 laminating process, prevent foreign matter from getting involved, and the control of pressure, speed and angle will be noted, in order to avoid fit uneven and produce bubble.
In Novel capacitance type touch screen manufacture method provided by the invention, ITO patterned layer 121 on ITO patterned layer 121 on PET film (film) structural member 1 in middle layer and PET film (film) structural member 1 of lower floor is all stamp to hide ink logo 13 on the ITO conducting film 12 of having one's face covered with, after the acid etching of unwanted place is got rid of, to remove again and hide ink and make, utilize the screen printing technique that equipment is relatively simple and cheap exactly, without the gold-tinted processing procedure that equipment investment is larger; The lead portion of being drawn by the electric signal of ITO conducting film is silver paste printing ink, also be that serigraphy processing is on material, a large amount of equipment funds that completely avoid needs described in gold-tinted processing procedure drop into, equipment debugging difficulty, input cycle are long, the problem of integral production high cost, greatly reduce its production cost, be conducive to applying of capacitance touch screen, thus replace electric resistance touch screen on a large scale.
Preferably, as a kind of embodiment of Novel capacitance type touch screen manufacture method provided by the invention, in described step (1), the technique that PET basement membrane 11 is prepared ITO conducting film 12 is magnetron sputtering embrane method.Magnetron sputtering law technology is comparatively ripe, and it is with the obvious advantage: gentle pressure can carry out at lower voltage, greatly reduce the possibility of Film Contamination, and rate of film build is high, substrate temperature is low, and the adhesiveness of film is good, can realize large-area coating film; The method is applied to herein, can the thickness of accurate control ITO conducting film, and makes ITO conducting film keep good adhesion.
Further, as a kind of embodiment of Novel capacitance type touch screen manufacture method provided by the invention, in described step (2) and (4), the pattern of described covering ink logo 13 and ITO conductive pattern layer 121 is rhombus, so as to respond to preferably Y-direction or X to signal.
Preferably, as a kind of embodiment of Novel capacitance type touch screen manufacture method provided by the invention, in described step (6), the thickness of optical cement 3 is 50 μm ~ 100 μm, transmittance is more than 95%, to ensure bonding permanance and to guarantee color and sufficient display brightness.
Preferably, as a kind of embodiment of Novel capacitance type touch screen manufacture method provided by the invention, in described step (6), described face glass 2 is special-shaped tempered glass.Under same thickness, thicker than simple glass 4 ~ 5 times of tempered glass bending strength, impact strength is than simple glass height at least 5 times, and as touch panel, anti-zoned impact resistance is good, durable in use.
The present invention also provides a kind of touch screen terminal, and this touch screen terminal comprises a touch-screen, and described touch-screen is Novel capacitance type touch screen described above.This terminal can be mobile phone, media player, navigational system, digital camera, digital album (digital photo frame), PDA, game station, display, Medical Devices etc.
Touch screen terminal provided by the invention, owing to have employed Novel capacitance type touch screen described above, avoid gold-tinted processing procedure in this touch-screen production run, its production technology cost is low, production difficulty reduces, and therefore makes the integral production cost of terminal also decrease.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. a Novel capacitance type touch screen manufacture method, is characterized in that, comprises the following steps:
(1) on PET basement membrane, pass through magnetron sputtering plating legal system for one deck ITO conducting film, the square resistance of described ITO conducting film controls at 350 Ω/below;
(2) adopt screen printing technique to print on ITO conducting film and hide rhombus ink design layer;
(3) fall not by the ITO conducting film of ink covering part with acid etching;
(4) remove described covering ink design layer, form that capacitance plate needs can respond to preferably Y-direction or X to the rhombus ITO conductive pattern layer of signal;
(5) screen printing technique is adopted to print ag paste electrode and obtain PET film structural member;
(6) step described in two panels (5) is made the PET film structural member formed to use successively together with optics glue laminating with the special-shaped tempering face glass of a slice, form the Novel capacitance type touch screen of structural integrity.
2. Novel capacitance type touch screen manufacture method according to claim 1, is characterized in that, in described step (6), the thickness of optical cement is 50 μm ~ 100 μm, transmittance is more than 95%.
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| CN103310904B (en) * | 2012-03-14 | 2016-04-13 | 深圳欧菲光科技股份有限公司 | The preparation method of ITO electrode and the ITO electrode of employing prepared by the method |
| CN103365496A (en) * | 2012-03-27 | 2013-10-23 | 苏州市健邦触摸屏技术有限公司 | Capacitive touch screen with circuit on panel |
| CN103631455A (en) * | 2012-08-24 | 2014-03-12 | 深圳欧菲光科技股份有限公司 | Thin film inductor, capacitive touch screen comprising inductor, manufacturing method of thin film inductor and terminal product |
| CN103631456B (en) | 2012-08-24 | 2017-07-04 | 深圳欧菲光科技股份有限公司 | Film inductor, the capacitance touch screen comprising the inductor and preparation method thereof and end product |
| US9510456B2 (en) | 2012-11-09 | 2016-11-29 | Shenzhen O-Film Tech Co., Ltd. | Transparent conductor and preparation method thereof |
| CN103019494A (en) * | 2012-12-26 | 2013-04-03 | 深圳市新济达光电科技有限公司 | Capacitive touch screen and manufacturing method thereof |
| CN103885654A (en) * | 2013-03-12 | 2014-06-25 | 深圳市信濠精密技术股份有限公司 | Electromagnetism and capacitance integrated touch screen and manufacturing method thereof |
| CN103309541A (en) * | 2013-06-27 | 2013-09-18 | 袁博 | Manufacturing method for capacitance type touch screen wire circuit |
| CN103365520B (en) * | 2013-07-18 | 2016-01-27 | 四川世创达电子科技有限公司 | A kind of manufacture method of capacitive screen Sensor without etched mark |
| CN103412693A (en) * | 2013-07-18 | 2013-11-27 | 向火平 | Large-size capacitive screen manufacturing method and large-size capacitive screen |
| CN103605444B (en) * | 2013-11-30 | 2016-07-06 | 东莞市平波电子有限公司 | A kind of processing technology of the touch screen of G1F structure |
| CN104035641A (en) * | 2014-06-13 | 2014-09-10 | 格林精密部件（惠州）有限公司 | Single-glass structured capacitive touch screen based on high temperature and laser etching resistant ink |
| WO2016176927A1 (en) * | 2015-05-06 | 2016-11-10 | 信利光电股份有限公司 | Touchscreen, mobile communication terminal, manufacturing method for touchscreen |
| CN104777941A (en) * | 2015-05-06 | 2015-07-15 | 信利光电股份有限公司 | Touch screen preparation method |
| CN107526459A (en) * | 2016-06-20 | 2017-12-29 | 蓝思科技股份有限公司 | The preparation method that touch screen function is realized using full silver paste pattern printing processing procedure |
| CN106221149B (en) * | 2016-08-25 | 2018-07-06 | 焦作市金宇阳高科电子有限公司 | A kind of applying method of PET base material functional sheet |
| CN107759106A (en) * | 2017-09-27 | 2018-03-06 | 广东星弛光电科技有限公司 | A kind of manufacture method of mobile phone capacitive touch screen cover-plate glass |
| CN108227992A (en) * | 2018-01-03 | 2018-06-29 | 京东方科技集团股份有限公司 | The method made for touch screen |
| CN108228016A (en) * | 2018-02-09 | 2018-06-29 | 江西蓝沛泰和新材料有限公司 | A kind of full bonding structure of large size capacitive touch screen |
| CN109857284A (en) * | 2019-01-29 | 2019-06-07 | 晟光科技股份有限公司 | A kind of two-sided ITO film structure capacitive screen and preparation method thereof |
| CN111857444A (en) * | 2020-06-19 | 2020-10-30 | 深圳全息界科技有限公司 | GFF (glass fiber reinforced film) type touch screen laminating process and touch screen |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201788494U (en) * | 2009-04-24 | 2011-04-06 | 意力(广州)电子科技有限公司 | High-light-transmittance capacitive touch screen |
| CN101989134A (en) * | 2009-07-31 | 2011-03-23 | 沈阳晨讯希姆通科技有限公司 | Flat-panel touch screen and manufacturing method thereof |
| CN101853114B (en) * | 2010-05-18 | 2013-02-13 | 上海优熠电子科技有限公司 | Capacitive touch screen with electrodes and manufacturing method thereof |
| CN102139335A (en) * | 2011-05-06 | 2011-08-03 | 毛志勇 | Rotary type stirrup machine |
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Address after: 518000 Guangdong city of Shenzhen province Nanshan District Xili Street 2 North Road Building Howell Technology Patentee after: Shenzhen Howell Display Technology Co. Ltd. Address before: 518000 Guangdong city of Shenzhen province Nanshan District science and Technology Park North Long Hill Road No. two building Howell Patentee before: Shenzhen Hivac Film Technology Co.,Ltd. |