CN102279682A - Novel capacitive touch screen, manufacturing method thereof and touch screen terminal - Google Patents
Novel capacitive touch screen, manufacturing method thereof and touch screen terminal Download PDFInfo
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Abstract
The invention provides a novel capacitive touch screen, a manufacturing method thereof and a touch screen terminal, and is suitable for the technical field of touch screen production. The novel capacitive touch screen comprises a layer of panel glass, and two layers of polyester (PET) thin film structural pieces plated with indium-tin oxide (ITO) conductive pattern layer and silver paste electrode. The two layers of PET thin film structural piece and the one layer of panel glass are sequentially glued together through optical glue. The capacitive screen in the structure does not need to adopt a yellow-light making process when the ITO pattern and peripheral leads are manufactured in a production process, thereby greatly reducing the equipment investment and the process cost, and contributing to the promotion and the application of the capacitive touch screen. Therefore, the resistive touch screens are substituted by the capacitive touch screens in large scale.
Description
Technical field
The invention belongs to the touch-screen production technical field, more particularly, relate to a kind of novel capacitance-type touch-screen and manufacture method and touch screen terminal.
Background technology
Along with the consumption mobile communication equipment adopts digital form and integrated more function more and more, develop innovative intuitively user interface (UI) scheme and become even more important.As the part of user interface design, projection-type capacitive touch screen helps to tackle this challenge.On June 29th, 2007, the iPhone mobile phone that attracts the attention of millions of people starts the contact panel upsurge of the another ripple of a ripple in the whole world, and, also having caused of 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.What the iPhone mobile phone used is capacitive touch screen.The use principle of novel capacitance-type touch-screen is: judging according to the electric capacitance change of contact area the position of finger touch point can provide perfect support to the gesture of complexity such as multiple point touching.Because induction to external world need be passed through the nonconducting dielectric medium of one deck (plastic cement, glass etc.), touch-screen need be fitted in the loam cake back side, so antijamming capability to external world is stronger, and reliability and durability height.Be the first-selected touch-screen kind of middle-size and small-size electronic product in future, so the market demand of touch screen element is very big.
But, see also Fig. 1 because the structure of iPhone capacitance plate is so-called two-layer, promptly the sensor (Sensor) 1 made by glass of a slice ' and one deck face glass 2 ', use optical cement 3 ' (perhaps glue) to fit then and form.The face glass 2 on upper strata ' only be protective effect and decoration function; what play function is sensor (Sensor) 1 ' part; and the glass 11 of sensor (Sensor) 1 ' be a 0.55mm or 0.7mm thickness '; two surperficial middle parts of glass all have respectively the ITO coating 12 that is etched into figure '; periphery for the coating of Mo-Al-Mo be etched into the lead-in wire 13 of lead ', this goes between 13 ' touching signals can be derived.
The technology that causes can only adopting in its production run TFT of this kind structure capacitive screen, promptly so-called plated film-exposure-development-etch process.No matter this kind technology is middle ITO argyle design layer or peripheral lead portion, all need to adopt so-called gold-tinted line, promptly the gold-tinted processing procedure must be arranged, the equipment funds input of its gold-tinted processing procedure is very big, and equipment debugging difficulty, equipment is very long from putting into the output cycle, causes the whole cost of product too high, and this also is that capacitance plate does not have one of major reason that replaces on a large scale by the resistance screen.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of novel capacitance-type touch-screen, be intended to avoid bring the problem that equipment funds have high input, the output cycle is long of gold-tinted processing procedure needs because of need adopt Thin Film Transistor (TFT) (TFT) technology in its manufacturing process, 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: a kind of novel capacitance-type touch-screen is provided, comprise one deck face glass, the PET membrane structure spare that also comprises the two-layer ITO of being coated with conductive pattern layer and ag paste electrode, two-layer described PET membrane structure spare and the described face glass of one deck fit together by optical cement successively.
Particularly, the pattern of described ITO conductive pattern layer is a rhombus.
Preferably, the thickness of described optical cement is that 50 μ m～100 μ m, transmittance are more than 95%.
Preferably, described face glass is special-shaped tempered glass.
The beneficial effect of novel capacitance-type touch-screen provided by the invention is: touch-screen of the present invention constitutes by three layers, topmost one deck is a tempered glass, middle one deck is PET film (film) structural member that is coated with ITO conductive pattern layer and ag paste electrode of high permeability, bottom one deck also is PET film (film) structural member that is coated with ITO conductive pattern layer and ag paste electrode, promptly adopt ITO film to replace ITOglass in the traditional capacitance screen, and between these three layers with the optics glue bond together.The touch-screen of this kind structure does not all need to adopt the gold-tinted processing procedure when making ITO pattern and periphery lead-in wire in manufacture process, therefore avoided long, the too high problem of integral production cost of a large amount of equipment funds inputs, equipment debugging difficulty, input cycle of the described needs of gold-tinted processing procedure, reduce its production cost greatly, help applying of capacitance touch screen, thereby replace electric resistance touch screen on a large scale.
The present invention also provides a kind of manufacture method of above-mentioned described novel capacitance-type touch-screen, and this manufacture method may further comprise the steps:
(1) preparation one deck ITO conducting film on the PET basement membrane, the square resistance of described ITO conducting film are controlled at 150 Ω/below the;
(2) adopt screen printing technique on the ITO conducting film, to print and hide ink design layer;
(3) fall the ITO conducting film that is not hidden part with acid etching by printing ink;
(4) remove described covering ink design layer, form the ITO conductive pattern layer that capacitance plate needs;
(5) the employing screen printing technique is printed ag paste electrode and is obtained PET membrane structure spare;
(6) two described steps (5) are made the PET membrane structure spare and a slice face glass that form and lump together with the optics sticker successively, form the novel capacitance-type touch-screen of structural integrity.
Preferably, in the described step (1), the technology of preparation ITO conducting film is the magnetron sputtering embrane method on the PET basement membrane.
Particularly, in described step (2) and (4), the pattern of described covering ink logo and ITO conductive pattern layer is a rhombus.
Preferably, in the described step (6), the thickness of optical cement is that 50 μ m～100 μ m, transmittance are more than 95%.
Preferably, in the 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 the manufacture method of the present invention, ITO patterned layer on the ITO patterned layer on PET film (film) structural member in middle layer and PET film (film) structural member of lower floor all is to stamp covering printing ink on the ITO conducting film of having one's face covered with, after unwanted place got rid of with acid etching, remove again and hide that printing ink makes, utilize the simple and cheap relatively screen printing technique of equipment exactly, without the bigger gold-tinted processing procedure of equipment investment; The lead portion that the electric signal of ITO conducting film is drawn is a silver paste printing ink, also be that serigraphy processing is on material, avoided long, the too high problem of integral production cost of a large amount of equipment funds inputs, equipment debugging difficulty, input cycle of the described needs of gold-tinted processing procedure fully, reduce its production cost greatly, help applying of capacitance touch screen, thereby replace electric resistance touch screen on a large scale.
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 above-mentioned described novel capacitance-type touch-screen.
The beneficial effect of touch screen terminal provided by the invention is: touch screen terminal of the present invention is owing to adopted above-mentioned described novel capacitance-type touch-screen, avoided the gold-tinted processing procedure in this touch-screen production run, its production technology cost is low, the production difficulty reduces, and therefore makes the integral production cost of terminal also decrease.
Description of drawings
Fig. 1 is the cross-sectional view of existing double glazing capacitive touch screen;
Cross-sectional view in the novel capacitance-type touch-screen step of manufacturing (1) that Fig. 2 provides for the embodiment of the invention behind preparation ITO conducting film on the PET basement membrane;
In the novel capacitance-type touch-screen step of manufacturing (2) that Fig. 3 provides for the embodiment of the invention in the cross-sectional view of printing on the ITO conducting film after hiding ink logo;
Etch away in the novel capacitance-type touch-screen step of manufacturing (3) that Fig. 4 provides for the embodiment of the invention not by ink logo and hide cross-sectional view behind the ITO conducting film of part;
Remove the cross-sectional view that hides behind the ink logo in the novel capacitance-type touch-screen step of manufacturing (4) that Fig. 5 provides for the embodiment of the invention;
The middle cross-sectional view of printing the PET membrane structure spare that forms behind the ag paste electrode of novel capacitance-type touch-screen step of manufacturing (5) that Fig. 6 provides for the embodiment of the invention;
The cross-sectional view of the novel capacitance-type touch-screen that obtains in the novel capacitance-type touch-screen step of manufacturing (6) that Fig. 7 provides for the embodiment of the invention;
The plan structure synoptic diagram of the novel capacitance-type touch-screen that Fig. 8 provides for the embodiment of the invention.
Embodiment
In order to make technical matters to be solved by this invention, technical scheme and beneficial effect clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification 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 PET film (film) structural member 1 of the two-layer ITO of being coated with conductive pattern layer 121 and ag paste electrode 14, the described face glass 2 of two-layer described PET film (film) structural member 1 and one deck fits together by optical cement 3 successively.
Novel capacitance-type touch-screen provided by the invention constitutes by three layers, topmost one deck is a face glass 2, middle one deck is PET film (film) structural member 1 that is coated with ITO conductive pattern layer 121 and ag paste electrode 14 of high permeability, bottom one deck also is to be coated with PET film (film) structural member 1 that ITO leads pattern electricity layer 121 and ag paste electrode 14, promptly adopt ITO film to replace ITO glass in the traditional capacitance touch-screen, and be bonded together with optical cement 3 between these three layers.The touch-screen of this kind structure does not all need to adopt the gold-tinted processing procedure when making ITO pattern and periphery lead-in wire in manufacture process, therefore avoided long, the too high problem of integral production cost of a large amount of equipment funds inputs, equipment debugging difficulty, input cycle of the described needs of gold-tinted processing procedure, reduce its production cost greatly, help applying of capacitance touch screen, thereby 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 a rhombus, so as to respond to preferably Y to or X to signal.
Preferably, a kind of embodiment as novel capacitance-type touch-screen manufacture method provided by the invention, the thickness of described optical cement 3 is that 50 μ m～100 μ m, transmittance are more than 95%, to guarantee bonding permanance and to guarantee color and sufficient display brightness.
Preferably, a kind of embodiment as novel capacitance-type touch-screen manufacture method provided by the invention, described face glass 2 is special-shaped tempered glass, under same thickness, thick 4～5 times than simple glass of tempered glass bending strengths, impact strength are than at least 5 times of simple glass height, as touch panel, anti-zoned impact resistance is good, and is durable in use.
The present invention also provides a kind of manufacture method of above-mentioned described novel capacitance-type touch-screen, and please in turn referring to Fig. 2 to Fig. 7, this manufacture method may further comprise the steps:
(1) see also Fig. 2, preparation one deck ITO conducting film 12 on PET basement membrane 11, the square resistance of described ITO conducting film 12 are controlled at 150 Ω/below the;
(2) see also Fig. 3, adopt screen printing technique on ITO conducting film 12, to print and hide ink design layer 13;
(3) see also Fig. 4, fall the ITO conducting film 12 that is not hidden part with acid etching by printing ink;
(4) see also Fig. 5, remove covering ink logo 13, form the ITO conductive pattern layer 121 that capacitance plate needs;
(5) see also Fig. 6, adopt screen printing technique printing ag paste electrode 14 and obtain PET film (film) structural member 1;
(6) see also Fig. 7, two described steps (5) are made the PET membrane structure spare 1 and a slice face glass 2 that form fit together with optical cement 3 successively, form the novel capacitance-type touch-screen of structural integrity.Need in the OCA optical cement 3 applying processes in ten thousand grades of dust free rooms, to carry out, prevent the foreign matter intervention, and will note the control of pressure, speed and angle, produce bubble in order to avoid fit inhomogeneous.
In the novel capacitance-type touch-screen manufacture method provided by the invention, ITO patterned layer 121 on the ITO patterned layer 121 on PET film (film) structural member 1 in middle layer and PET film (film) structural member 1 of lower floor all is to stamp to hide ink logo 13 on the ITO conducting film 12 of having one's face covered with, after unwanted place got rid of with acid etching, remove again and hide that printing ink makes, utilize the simple and cheap relatively screen printing technique of equipment exactly, without the bigger gold-tinted processing procedure of equipment investment; The lead portion that the electric signal of ITO conducting film is drawn is a silver paste printing ink, also be that serigraphy processing is on material, avoided long, the too high problem of integral production cost of a large amount of equipment funds inputs, equipment debugging difficulty, input cycle of the described needs of gold-tinted processing procedure fully, reduce its production cost greatly, help applying of capacitance touch screen, thereby 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 the described step (1), the technology of preparation ITO conducting film 12 is the magnetron sputtering embrane method on PET basement membrane 11.The magnetron sputtering law technology is comparatively ripe, and it is with the obvious advantage: can carry out gentle the depressing of lower voltage, reduce the film contamination of heavy greatly, and also the rate of film build height, substrate temperature is low, and the adhesiveness of film is good, can realize large-area coating film; This method is applied to herein, can accurately control the thickness of ITO conducting film, and makes the ITO conducting film keep good adhesive.
Further, a kind of embodiment as 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 a rhombus, so as to respond to preferably Y to or X to signal.
Preferably, a kind of embodiment as novel capacitance-type touch-screen manufacture method provided by the invention, in the described step (6), the thickness of optical cement 3 is that 50 μ m～100 μ m, transmittance are more than 95%, to guarantee 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 the described step (6), described face glass 2 is special-shaped tempered glass.Under same thickness, thick 4～5 times than simple glass of tempered glass bending strengths, impact strength are than at least 5 times of simple glass height, and as touch panel, anti-zoned impact resistance is good, and is 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 above-mentioned described novel capacitance-type touch-screen.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 adopted above-mentioned described novel capacitance-type touch-screen, avoided the gold-tinted processing procedure in this touch-screen production run, its production technology cost is low, the production difficulty reduces, and therefore makes the integral production cost of terminal also decrease.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. novel capacitance-type touch-screen, comprise one deck face glass, it is characterized in that: also comprise the PET membrane structure spare of the two-layer ITO of being coated with conductive pattern layer and ag paste electrode, two-layer described PET membrane structure spare and the described face glass of one deck fit together by optical cement successively.
2. novel capacitance-type touch-screen according to claim 1 is characterized in that, the pattern of described ITO conductive pattern layer is a rhombus.
3. novel capacitance-type touch-screen according to claim 1 is characterized in that, the thickness of described optical cement is that 50 μ m～100 μ m, transmittance are more than 95%.
4. novel capacitance-type touch-screen according to claim 1 is characterized in that, described face glass is special-shaped tempered glass.
5. each described novel capacitance-type touch-screen manufacture method of claim 1 to 4 is characterized in that, may further comprise the steps:
(1) preparation one deck ITO conducting film on the PET basement membrane, the square resistance of described ITO conducting film are controlled at 150 Ω/below the;
(2) adopt screen printing technique on the ITO conducting film, to print and hide ink design layer;
(3) fall the ITO conducting film that is not hidden part with acid etching by printing ink;
(4) remove described covering ink design layer, form the ITO conductive pattern layer that capacitance plate needs;
(5) the employing screen printing technique is printed ag paste electrode and is obtained PET membrane structure spare;
(6) two described steps (5) are made the PET membrane structure spare and a slice face glass that form and lump together with the optics sticker successively, form the novel capacitance-type touch-screen of structural integrity.
6. novel capacitance-type touch-screen manufacture method according to claim 5 is characterized in that, in the described step (1), the technology of preparation ITO conducting film is the magnetron sputtering embrane method on the PET basement membrane.
7. novel capacitance-type touch-screen manufacture method according to claim 5 is characterized in that, in described step (2) and (4), the pattern of described covering ink logo and ITO conductive pattern layer is a rhombus.
8. novel capacitance-type touch-screen manufacture method according to claim 5 is characterized in that, in the described step (6), the thickness of optical cement is that 50 μ m～100 μ m, transmittance are more than 95%.
9. novel capacitance-type touch-screen manufacture method according to claim 5 is characterized in that, in the described step (6), described face glass is special-shaped tempered glass.
10. a touch screen terminal comprises a touch-screen, it is characterized in that, described touch-screen is each described novel capacitance-type touch-screen of claim 1 to 4.
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| 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 |
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| 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 |
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| 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 |
| CN104777941A (en) * | 2015-05-06 | 2015-07-15 | 信利光电股份有限公司 | Touch screen preparation method |
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| CN103412693A (en) * | 2013-07-18 | 2013-11-27 | 向火平 | Large-size capacitive screen manufacturing method and large-size capacitive screen |
| CN103365520A (en) * | 2013-07-18 | 2013-10-23 | 四川世创达电子科技有限公司 | Manufacture method of capacitive screen Sensor without etching traces |
| CN103605444A (en) * | 2013-11-30 | 2014-02-26 | 东莞市平波电子有限公司 | Technology for manufacturing touch screen of G1F structure |
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| 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 |
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| 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 |
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| 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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