CN103257767A - Integrated capacitive sensing touch screen adopting two frame silk-screen and production method of integrated capacitive sensing touch screen - Google Patents
Integrated capacitive sensing touch screen adopting two frame silk-screen and production method of integrated capacitive sensing touch screen Download PDFInfo
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Abstract
The invention discloses an integrated capacitive sensing touch screen adopting two frame silk-screen and production method of the integrated capacitive sensing touch screen, and relates to a capacitive touch screen. A substrate is arranged, and a transparent conducting layer and a transparent conducting electrode are arranged on one surface of the substrate. A lower color coating is covered around the substrate, and an external conducting electrode is arranged on the lower color coating and the transparent conducting electrode. An upper color coating is arranged on a non-visual area of the touch screen except part of or entire external conducting electrode. A transparent conducting film is deposited on the substrate. The transparent conducting layer and the transparent conducting electrode are produced by a yellow light process. The lower color coating is produced in the non-visual area of the touch screen. The external conducting electrode is produced on the lower color coating by silk-screen printing to be used for being connected with the transparent conducting electrode and an external control circuit. The upper color coating is produced on the non-visual area of the touch screen except part of or entire external conducting electrode, and preferably, the color of the upper color coating is the same as or similar to that of the lower color coating.
Description
Technical field
The present invention relates to a kind of capacitance touch screen, relate in particular to a kind of can be only with integrated capacitance induction touch panel of the employing twice frame silk-screen of one gold-tinted operation and preparation method thereof.
Background technology
Touch-screen is as a kind of novel human-computer interaction interface, be widely used on the various digital information systems, from small sized product such as mobile phone, digital product, arrive medium-sized product such as automatic navigator, panel computer, game machine, household electrical appliance, can see the touch-screen product again on large product such as common query system, portable computer, Medical Instruments, market outlook are very considerable.The present invention refers in particular to the integrated capacitance induction touch panel that is applied in smart mobile phone, panel computer, game machine, portable computer etc.
The integrated capacitance induction touch panel of existing a kind of tradition (OGS) is a kind of bridging structure: the non-visible area at touch-screen prepares color coating with silk-screen or gold-tinted technology; Fill and lead up the step of color coating and glass with OC glue or other transparent material; Plate the ITO(tin indium oxide again) prepare the ITO figure with gold-tinted technology behind the film; Then cover the transparent insulating film that one deck plays the dielectric effect; Metal-coated membrane prepares metal bridge at last in gold-tinted technology again.Make this structure OGS capacitance touch screen and will use the low temperature coating technique, the adhesion of ITO film and substrate relative weak, reliability is relatively poor relatively.The making of this OGS capacitance touch screen needs five road gold-tinted operations, production process complexity, technical difficulty height, production cost height, and also yield of products is lower.
Another kind of advanced OGS capacitance induction touch panel, be a kind of single-sided structure: the non-visible area at touch-screen prepares color coating with silk-screen or gold-tinted technology; Fill and lead up step between color coating and the glass with OC glue or other transparent material; After plating the ITO film again, with the ITO electrode pattern of gold-tinted technology preparation.Make this structure OGS capacitance touch screen and also will use the low temperature coating technique.The making that this OGS capacitance touch screen is striden bridge construction OGS capacitance touch screen than tradition is simpler, but also needs three road gold-tinted operations, production process relative complex, technical threshold still very high, yields is also lower.
In above two kinds of OGS production methods, also can be removing with the operation that silk-screen or gold-tinted technology prepare color coating at non-visible area, directly the another side at glass substrate pastes the PET film that one deck has color coating.But this structure is not the strict meaning goes up the OGS capacitance touch screen, because this structure is " two " scheme.And the hardness ratio of PET film is relatively poor, than being easier to by metal or hard thing scratch, thereby influencing attractive in appearance and touches.
The characteristics of two kinds of above OGS structures all will be coated with color coating at non-visible area, and have a very big step between color coating and the substrate, and step thicknesses is the color diagram layer thickness.This is micron order (1～2 μ m) highly normally, and the ITO film thickness is 15～30nm, and the step between the two ruptures in the time of can making deposition ITO film herein.Therefore, two kinds of OGS structures of this preparation are plated the ITO film after all wanting earlier this step to be filled and led up again.And just must use the low temperature coating technique at color coating deposition ITO film, this is technological difficulties of preparation OGS touch-screen.Therefore, how reducing the gold-tinted operation in making OGS capacitance touch screen process, walk around step problem between color coating and the substrate, avoid using a low temperature coating technique difficult problem, reduce technical complexity and improve product yield etc., is the problem that the present invention need solve.
Chinese patent CN101853115A discloses a kind of integrated projection-type capacitive touch screen and manufacture method thereof, its structure only adopts a substrate, non-visual range on substrate is provided with color coating, be provided with whole of color coating at substrate and be provided with the bottoming dielectric film, the bottoming dielectric film is provided with first electrode pattern; First electrode pattern is provided with the dielectric insulation film, and the electrolyte velum is provided with second electrode pattern, and the coverage of electrolyte dielectric film does not comprise the splice terminal of first electrode pattern; Second electrode pattern is provided with the protection dielectric film, and the coverage of electric protection dielectric film does not comprise the splice terminal at first electrode pattern and the second electrode pattern edge; Be connected with external control circuit by connecting line on the splice terminal.This invention can significantly be compressed the thickness of touch-screen in the MULTILAYER COMPOSITE membrane structure of the monolithic substrate employing bottoming insulation film+ito thin film+dielectric insulation film+ito thin film+protection dielectric film that is provided with color coating, improves frivolous property and yields.
Summary of the invention
The object of the present invention is to provide a kind of integrated capacitance induction touch panel that adopts twice frame silk-screen and preparation method thereof.
The integrated capacitance induction touch panel of described employing twice frame silk-screen is provided with substrate, is provided with layer of transparent conductive layer and transparency conductive electrode on a surface of substrate; Around substrate, be coated with color coating down; Be provided with external conductive electrode at following color coating and transparency conductive electrode, described external conductive electrode is used for connecting outside control circuit; External conductive electrode adopts the conductive material identical or close with following color coating color; Except external conductive electrode partly or entirely, be provided with color coating at the non-visible area of touch-screen; The color that should go up color coating is identical or close with the color of following color coating.
Described transparency conducting layer can adopt ITO film, Graphene, carbon nano-tube and transparent conductive material to be prepared from, and can realize multi-point touch.
Described color coating down can adopt ink coating, gloss oil coating and versicolor frame adhesive coating etc.; The described color coating of going up can adopt ink coating, gloss oil coating and versicolor frame adhesive coating etc.
For fear of sight equation, described external conductive electrode adopts the conductive material identical or close with the color of described upward color coating and following color coating, as silver slurry, carbon slurry etc.Simultaneously, can make littler with the size of the described external conductive electrode of described transparency conductive electrode coupling part.
Except described external conductive electrode partly or entirely, the non-visible area of touch-screen all need be coated with color coating.
Described color coating down is located in the non-visible area of touch-screen.
The described color coating of going up can not cover described external conductive electrode, but the described color coating of going up must cover the described non-visible area of the unlapped touch-screen of color coating down.
Described transparency conducting layer is generally little than substrate.
The shape of described external conductive electrode can adopt rectangle, square, circle or ellipse etc.
Because the twice color coating processing procedure in front and back that uses, external conductive electrode can not adopt transparent conductive material, can adopt the identical or close coloured conductive material of color of color coating.
The preparation method of the integrated capacitance induction touch panel of described employing twice frame silk-screen may further comprise the steps:
1) at substrate deposition layer of transparent conducting film;
2) adopt gold-tinted technology to make transparency conducting layer and transparency conductive electrode;
3) color coating under the non-visible area of touch-screen is made;
4) adopt serigraphy at the external conductive electrode of following color coating preparation, be used for connecting the control circuit of transparency conductive electrode and outside;
5) except external conductive electrode partly or entirely, color coating in the non-visible area preparation of touch-screen, the color of the color of last color coating and following color coating is identical or close to be good.
In step 1), described substrate can be selected from the tempered glass transparency carrier, tempered glass transparency carrier, simple glass transparency carrier, a kind of in the macromolecular material transparency carrier etc.; Described nesa coating can adopt a kind of in ITO film, Graphene, carbon nano-tube and the transparent conductive material etc., and the thickness of described nesa coating can be 15～40nm.
In step 3), color coating can adopt serigraphy or gold-tinted technology etc. under the described making.
In step 4), describedly can adopt serigraphy or gold-tinted technology etc. at the following external conductive electrode of color coating preparation.
In step 5), described non-visible area at touch-screen prepares color coating can adopt serigraphy or gold-tinted technology etc.
If the color of described external conductive electrode is identical or very approaching with the color of described upward color coating, can only adopt the technology of saving step 3).
Described gold-tinted technology refers to make associated materials certain pattern occur at substrate in associated materials process gluing, soft baking, exposure, development, hard roasting one or multinomial operation.
The present invention can only adopt the gold-tinted operation one, makes simple, with low cost.Since the present invention be plated film preceding, make color coating after, can keep away and make earlier the color coating step difficult problem during plated film again, also avoided using the difficult problem of low temperature coating technique, more need not to worry high temperature plated film effect to the influence of color coating, the shades of colour coating all can prepare at non-visible area.Because the twice color coating processing procedure in front and back that uses, external conductive electrode can not adopt transparent conductive material, and adopts the identical or close coloured conductive material of color of color coating.Simultaneously, because preparation process has been used the transparent insulation material of multilayer less, can effectively improve the transmitance of touch-screen.Compare with traditional manufacturing technology, the present invention can significantly reduce production process, reduce production costs, improves quality and the yields of integrated capacitance induction touch panel.
Description of drawings
Fig. 1 is the structural representation of the integrated capacitance induction touch panel embodiment of employing twice frame silk-screen of the present invention.
Fig. 2 is the integrated capacitance induction touch panel preparation method schematic flow sheet of employing twice frame silk-screen of the present invention.
Fig. 3 is a kind of floor map that adopts the integrated capacitance induction touch panel of twice frame silk-screen.In Fig. 3, left figure is the full figure of planimetric map, and right figure is the partial enlarged drawing of planimetric map; Mark 101 is transparency conducting layers, the 102nd, and transparency conductive electrode, the 103rd, following color coating (bottom), the 104th, external conductive electrode, the 105th, last color coating (upper strata).
Embodiment
Following examples will the present invention is further illustrated by reference to the accompanying drawings.
Referring to Fig. 1, the integrated capacitance induction touch panel embodiment of described employing twice frame silk-screen is provided with substrate 100, is provided with layer of transparent conductive layer 101 and transparency conductive electrode 102 on a surface of substrate 100; Around substrate 100, be coated with color coating 103 down; Be provided with external conductive electrode 104 at following color coating 103 and transparency conductive electrode 102, described external conductive electrode 104 is used for connecting outside control circuit; External conductive electrode 104 adopts the conductive material identical or close with following color coating 103 colors; Except external conductive electrode 104 partly or entirely, be provided with color coating 105 at the non-visible area of touch-screen; The color that should go up color coating 105 is identical or close with the color of following color coating 103.
Described transparency conducting layer 101 can adopt ITO film, Graphene, carbon nano-tube and transparent conductive material to be prepared from, and can realize multi-point touch.
Described color coating 103 down can adopt ink coating, gloss oil coating and versicolor frame adhesive coating etc.; The described color coating 105 of going up can adopt ink coating, gloss oil coating and versicolor frame adhesive coating etc.
For fear of sight equation, described external conductive electrode adopts the conductive material identical or close with the color of described upward color coating 105 and following color coating 103, as silver slurry, carbon slurry etc.Simultaneously, can make littler with the size of the described external conductive electrode of described transparency conductive electrode coupling part.
Except described external conductive electrode partly or entirely, the non-visible area of touch-screen all need be coated with color coating.
Described color coating 103 down is located in the non-visible area of touch-screen.
The described color coating of going up can not cover described external conductive electrode, but the described color coating of going up must cover the described non-visible area of the unlapped touch-screen of color coating down.
Described transparency conducting layer 101 is generally little than substrate 100.
The shape of described external conductive electrode can adopt rectangle, square, circle or ellipse etc.
Because the twice color coating processing procedure in front and back that uses, external conductive electrode can not adopt transparent conductive material, can adopt the identical or close coloured conductive material of color of color coating.
Referring to Fig. 2 and 3, the preparation method of the integrated capacitance induction touch panel of described employing twice frame silk-screen may further comprise the steps:
1) at substrate 100 deposition layer of transparent conducting film 101; Described substrate can be selected from the tempered glass transparency carrier, tempered glass transparency carrier, simple glass transparency carrier, a kind of in the macromolecular material transparency carrier etc.; Described nesa coating can adopt a kind of in ITO film, Graphene, carbon nano-tube and the transparent conductive material etc., and the thickness of described nesa coating can be 15～40nm.
2) adopt gold-tinted technology to make transparency conducting layer 101 and transparency conductive electrode 102.
3) color coating 103 under the non-visible area of touch-screen is made; Color coating 103 can adopt serigraphy or gold-tinted technology etc. under the described making.
4) adopt serigraphy at the external conductive electrode 104 of following color coating 103 preparations, be used for connecting the control circuit of transparency conductive electrode and outside; Describedly can adopt serigraphy or gold-tinted technology etc. at the following external conductive electrode 104 of color coating 103 preparations.
5) except external conductive electrode 104 partly or entirely, color coating 105 in the non-visible area preparation of touch-screen, the color of the color of last color coating 105 and following color coating 103 is identical or close to be good.Described non-visible area at touch-screen prepares color coating 105 can adopt serigraphy or gold-tinted technology etc.
If the color of described external conductive electrode is identical or very approaching with the color of described upward color coating, can only adopt the technology of saving step 3).
Described gold-tinted technology refers to make associated materials certain pattern occur at substrate in associated materials process gluing, soft baking, exposure, development, hard roasting one or multinomial operation.
Claims (10)
1. adopt the integrated capacitance induction touch panel of twice frame silk-screen, it is characterized in that being provided with substrate, be provided with layer of transparent conductive layer and transparency conductive electrode on a surface of substrate; Around substrate, be coated with color coating down; Be provided with external conductive electrode at following color coating and transparency conductive electrode, described external conductive electrode is used for connecting outside control circuit; External conductive electrode adopts the conductive material identical or close with following color coating color; Except external conductive electrode partly or entirely, be provided with color coating at the non-visible area of touch-screen; The color that should go up color coating is identical or close with the color of following color coating.
2. adopt the integrated capacitance induction touch panel of twice frame silk-screen according to claim 1, it is characterized in that described transparency conducting layer adopts ITO film, Graphene, carbon nano-tube and transparent conductive material to be prepared from.
3. adopt the integrated capacitance induction touch panel of twice frame silk-screen according to claim 1, it is characterized in that described color coating down adopts ink coating, gloss oil coating and versicolor frame adhesive coating; The described color coating of going up adopts ink coating, gloss oil coating and versicolor frame adhesive coating.
4. adopt the integrated capacitance induction touch panel of twice frame silk-screen according to claim 1, it is characterized in that described external conductive electrode adopts the conductive material identical or close with the color of described upward color coating and following color coating, described conductive material can adopt silver slurry or carbon slurry.
5. adopt the integrated capacitance induction touch panel of twice frame silk-screen according to claim 1, it is characterized in that except described external conductive electrode partly or entirely, the non-visible area of touch-screen all need be coated with color coating.
6. adopt the integrated capacitance induction touch panel of twice frame silk-screen according to claim 1, it is characterized in that described color coating down is located in the non-visible area of touch-screen.
7. adopt the integrated capacitance induction touch panel of twice frame silk-screen according to claim 1, it is characterized in that described transparency conducting layer is littler than substrate; The shape of described external conductive electrode can adopt rectangle, square, circle or oval.
8. adopt the preparation method of the integrated capacitance induction touch panel of twice frame silk-screen according to claim 1, it is characterized in that may further comprise the steps:
1) at substrate deposition layer of transparent conducting film;
2) adopt gold-tinted technology to make transparency conducting layer and transparency conductive electrode;
3) color coating under the non-visible area of touch-screen is made;
4) adopt serigraphy at the external conductive electrode of following color coating preparation, be used for connecting the control circuit of transparency conductive electrode and outside;
5) except external conductive electrode partly or entirely, color coating in the non-visible area preparation of touch-screen, the color of the color of last color coating and following color coating is identical or close to be good.
9. as the preparation method of the integrated capacitance induction touch panel of employing twice frame silk-screen as described in the claim 8, it is characterized in that in step 1) described substrate is selected from the tempered glass transparency carrier, the tempered glass transparency carrier, the simple glass transparency carrier, a kind of in the macromolecular material transparency carrier; Described nesa coating can adopt a kind of in ITO film, Graphene, carbon nano-tube and the transparent conductive material, and the thickness of described nesa coating can be 15～40nm.
10. as the preparation method of the integrated capacitance induction touch panel of employing twice frame silk-screen as described in the claim 8, it is characterized in that in step 3) color coating adopts serigraphy or gold-tinted technology under the described making;
In step 4), describedly can adopt serigraphy or gold-tinted technology at the following external conductive electrode of color coating preparation;
In step 5), described non-visible area at touch-screen prepares color coating can adopt serigraphy or gold-tinted technology.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100428880A CN103257767A (en) | 2013-01-30 | 2013-01-30 | Integrated capacitive sensing touch screen adopting two frame silk-screen and production method of integrated capacitive sensing touch screen |
| CN201480006366.8A CN104956298A (en) | 2013-01-30 | 2014-01-28 | One glass solution capacitive touch screen and manufacturing method thereof |
| PCT/CN2014/071654 WO2014117728A1 (en) | 2013-01-30 | 2014-01-28 | One glass solution capacitive touch screen and manufacturing method thereof |
| US14/764,465 US9760227B2 (en) | 2013-01-30 | 2014-01-28 | OGS captive touch panel and method for manufacturing same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100428880A CN103257767A (en) | 2013-01-30 | 2013-01-30 | Integrated capacitive sensing touch screen adopting two frame silk-screen and production method of integrated capacitive sensing touch screen |
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| CN103257767A true CN103257767A (en) | 2013-08-21 |
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| CN2013100428880A Pending CN103257767A (en) | 2013-01-30 | 2013-01-30 | Integrated capacitive sensing touch screen adopting two frame silk-screen and production method of integrated capacitive sensing touch screen |
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| CN104407749A (en) * | 2014-05-31 | 2015-03-11 | 福州大学 | A method for 3D manufacturing an OGS capacitive touch screen |
| CN106739588A (en) * | 2016-12-12 | 2017-05-31 | 晟光科技股份有限公司 | A kind of white OGS solves the screen printing method on VA areas black surround size side |
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| CN106739588A (en) * | 2016-12-12 | 2017-05-31 | 晟光科技股份有限公司 | A kind of white OGS solves the screen printing method on VA areas black surround size side |
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