CN101996007A - Wiring method for capacitive touch screen electric conductive circuit - Google Patents
Wiring method for capacitive touch screen electric conductive circuit Download PDFInfo
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- CN101996007A CN101996007A CN2009101093407A CN200910109340A CN101996007A CN 101996007 A CN101996007 A CN 101996007A CN 2009101093407 A CN2009101093407 A CN 2009101093407A CN 200910109340 A CN200910109340 A CN 200910109340A CN 101996007 A CN101996007 A CN 101996007A
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- screen
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Abstract
The invention discloses a wiring method for a capacitive touch screen electric conductive circuit. In the method, a metal electric conductive circuit part connecting a window area and a flexible printed circuit (FPC) in a capacitive touch screen is replaced by utilizing an ITO conductive film, leaded out from the edge of the window area of the touch screen, and the rest electric conductive circuits are obtained by adopting a silk-screen printing silver (Ag) paste and are leaded out from a non-window area of the touch screen. The invention can resolve the difficulty that a plurality of electric conductive circuits are prepared in a limited non-window area in the touch screen, and enable the preparation of the capacitive touch screen to be realized through the silk-screen printing.
Description
[technical field]
The present invention relates to prepare capacitive touch screen with multi-point touch function with screen printing technique.
[background technology]
Touch-screen is a kind of remarkable input equipment that improves man machine operation interface, have intuitively, simply, advantage efficiently.Along with development of electronic technology, the use of touch screen is more and more general.In the past, various types of touch-screens constantly occur, and comprise resistance-type, condenser type, infrared and surface acoustic wave type touch-screen.Wherein, resistive touch screen is the market mainstream.In the recent period, the capacitive touch screen technical development becomes can discern its surperficial multiple point touching, is convenient to the user by the light multiple complicated operations that realizes file, recreation of simple action, has the multi-point touch function, has been subjected to extensive concern; And, relative resistance formula touch-screen, the surface of capacitive touch screen is the chemically reinforced glass of a rigidity, has strengthened the appearance and the impact resistance of touch-screen, therefore, capacitive touch screen is more and more very popular.
But the real user of capacitive touch screen is less, and main cause is that it costs an arm and a leg and present touch-screen manufacturer can not adopt prior art to hatch the technology of preparing of this class touch-screen.The multi-point touch function of capacitive touch screen realizes that principle generally is that ito thin film with touch-screen carries out subregion and is designed to given shape, then, touch screen controller to each independently and the ito thin film with given shape carry out electric capacity inspection and control, discern the multiple point touching on their surfaces.For ito thin film and touch screen controller are electrically connected, touch-screen need design the multiply conducting wire.A key point for preparing this class capacitive touch screen is that the finite space in the non-window area of touch-screen prepares these conducting wires, the technological process that adopts is first physical vacuum plating conducting film at present, expose then, development and etching, make metal conductive film become the metallic conduction circuit.The cost of these technological processs is all higher, causes costing an arm and a leg of capacitive touch screen.The resistive touch screen that generally uses in the market, the preparation method of its conducting wire adopts serigraphy Ag slurry to obtain.Screen printing technique is a kind of cheaply technology efficiently again, but its precision is limited, and the width of its conducting wire takies bigger area with respect to the conducting wire broad of physical vacuum plating conducting film method preparation.When adopting this technology to prepare the conducting wire of capacitive touch screen, if expect the multiply conducting wire, then can take bigger non-window area, if increase the area of non-window area, just must sacrifice the area of viewing area, this is that the electronic product user is undesirable, and therefore, touch-screen manufacturer employing screen printing technique can't this class capacitive touch screen of volume production.If there is method both can adopt screen printing technique to prepare the capacitive touch screen conducting wire, do not influence the area of the window area of touch-screen again, will be well received.
[summary of the invention]
In view of adopting serigraphy to prepare capacitive touch screen, the cost of capacitive touch screen and touch-screen manufacturer have the problems referred to above, the invention provides a kind of conducting wire wiring method of capacitive touch screen, make the preparation of capacitive touch screen both can adopt screen printing technique, do not influence the form width of touch-screen again, touch-screen manufacturer can introduce the capacitive touch screen technology fast.
For realizing above-mentioned target, following wiring method is adopted in capacitive touch screen of the present invention conducting wire:
The partially conductive circuit of described capacitive touch screen adopts the ITO conductive film to substitute, and draws from the edge, window area of touch-screen; Silver (Ag) conducting wire is adopted in the residue conducting wire, draws from the non-viewing area of touch-screen.
Wherein, described ITO conductive film is the water white transparency conductive film.
Wherein, described touch-screen is self-capacitance formula touch-screen or is the mutual capacitance type touch-screen.
Wherein, the preparation method of described silver (Ag) conducting wire is serigraphy.
Wherein, capacitive touch screen as claimed in claim 1 conducting wire wiring method is characterized in that, two ends, described conducting wire connect window area and compliant conductive circuit (FPC).
Capacitive touch screen of the present invention conducting wire wiring method has following advantage:
Solved design multiply conducting wire problem in the finite space of the non-window area of capacitive touch screen, the preparation of capacitive touch screen can be prepared by screen printing technique, avoid adopting the method for physical vacuum plating conducting film, obviously reduce the preparation cost of capacitive touch screen, reduce technological processes such as exposure, development and etching simultaneously, improved the production efficiency of touch-screen; Touch-screen manufacturer can utilize the existing line equipment hatching capacitive touch screen technology of producing, and will promote the extensive utilization of capacitive touch screen.
[description of drawings]
Fig. 1 is a kind of structure of existing capacitive touch screen.
Fig. 2 is the enlarged drawing of part conducting wire among Fig. 1 (a).
Fig. 3 relates to the structural drawing of the embodiment of the invention one.
Fig. 4 relates to the structural drawing of the embodiment of the invention two.
Fig. 5 relates to the structural drawing of the embodiment of the invention three.
[embodiment]
In order to describe content of the present invention in detail, the present invention will be further described below in conjunction with specification drawings and specific embodiments, but the scope that the present invention protected is not limited thereto.Clear for the ease of the present invention is narrated, size among the figure and part-structure have carried out processing and amplifying.
The present invention relates to have the conducting wire of the capacitive touch screen of multi-point touch function with the screen printing technique preparation.At present, capacitive touch screen has self-capacitance formula touch-screen and mutual capacitance type touch-screen two classes.Generally, no matter be self-capacitance formula or mutual capacitance type, all there is the multiply conducting wire at the edge with capacitive touch screen of multi-point touch ability.Fig. 1 is a kind of structure of existing capacitive touch screen, it is the mutual capacitance type touch-screen, comprise that Drive Layer (1) is as Fig. 1 (a), and inductive layer (2) is as Fig. 1 (b), and Drive Layer (1) comprises the metallic conduction circuit (5) that being parallel to each other of insulating substrate (3), insulating substrate surface and horizontal transparent conductive film bar (4) insulated from each other and insulating substrate surface are connected horizontal transparent conductive film bar.Inductive layer (2) comprises that being parallel to each other of insulating substrate (8), insulating substrate surface and vertical transparent conductive film bar (9) insulated from each other are connected the metallic conduction circuit (10) of transparent conductive film bar with substrate surface, Drive Layer (1) and inductive layer (2) applying have mutually just been formed touch-screen, as Fig. 1 (c).The material of above-mentioned horizontal transparent conductive film bar (4) and vertical transparent conductive film bar (9) is ITO, and ITO is the water white transparency conductive film, also can not influence outward appearance even be present in the window area.Wherein, the direction of vertical transparent conductive film bar (9) of the horizontal transparent conductive film bar (4) of Drive Layer (1) and inductive layer (2) can mutual alternative.Dashed rectangle (6) among Fig. 1 (a) is the window area of touch-screen and the separatrix of non-window area, is the window area in the square frame, and square frame is outward non-window area.Metallic conduction circuit (5) and metallic conduction circuit (10) all are positioned at outside the dashed rectangle, are in the non-window area of touch-screen.A key point of preparation capacitive touch screen is that the finite space in the non-window area of touch-screen prepares these metallic conduction circuits, width such as the non-window area at edge, the left and right sides is about 2mm, need to design metallic conduction circuit (5) greater than 5, then the width of each strip metal conducting wire (5) is just very narrow, Fig. 2 is the enlarged drawing in Fig. 1 (a) broken circle (7), prepare the metallic conduction circuit if adopt serigraphy Ag to starch, then occur breaking phenomena easily, inapplicable.
Embodiment one:
The present invention is that metallic conduction circuit (5) part at the edge, the left and right sides shown in Fig. 1 (a) is alternative with ITO, as the ITO conducting wire (11) among Fig. 3 (a), because the ITO conducting wire is the water white transparency conductive film, can be positioned at the window area of touch-screen; The metallic conduction circuit of residue lesser amt is obtained by serigraphy Ag slurry,, be positioned at the non-window area of touch-screen as the Ag conducting wire (12) among Fig. 3 (a).Two leads that only drawn in the drawings are positioned at the window area, in the touch-screen preparation of reality, can increase the number of the ITO conducting wire (11) that is positioned at the window area as required, to reduce the number of the Ag conducting wire (12) in the non-window area.Fig. 3 (b) is the Drive Layer (1) of employing serigraphy preparation and the structural drawing after inductive layer (2) combination, and finally can draw by the bottom of touch-screen its conducting wire, is connected on the FPC.After adopting the method to prepare the conducting wire of capacitive touch screen, ITO conductive film and the preparation of serigraphy Ag slurry technology can be adopted in the capacitive touch screen conducting wire, and do not need to adopt physical vaccum deposite, and processing procedures such as exposure, development and etching, therefore, the cost of capacitive touch screen will reduce, and touch-screen manufacturer can import the capacitive touch screen technology fast, can promote the extensive utilization of capacitive touch screen.
Embodiment two:
Fig. 4 is the second embodiment of the present invention.It is a kind of mutual capacitance type touch-screen, comprise Drive Layer (13) as Fig. 4 (a) and inductive layer (14) as Fig. 4 (b).Drive Layer (13) by insulating substrate (15), substrate surface be parallel to each other and horizontal rhombus ITO chain (16) insulated from each other and the conducting wire (17) at substrate surface edge are formed; Inductive layer (14) by insulation transparent base material (18), substrate surface be parallel to each other and vertical rhombus ITO chain (19) insulated from each other and the Ag conducting wire (20) at substrate surface edge are formed.The present invention is the form that conducting wire (17) part that is connected with horizontal rhombus ITO chain is adopted ITO, be positioned at the window area of touch-screen, shown in the ITO conducting wire (21) of Fig. 4 (a), residual A g conducting wire (22) is positioned at non-window area, the conducting wire that is positioned at non-window area can be adopted serigraphy Ag slurry and be solidified preparation, is the touch-screen that Drive Layer (13) and inductive layer (14) are sticked to form mutually as Fig. 4 (c).
Embodiment three:
Fig. 5 is the third embodiment of the present invention.It is made up of the conducting wire (25) at insulating substrate (23), substrate surface triangle ITO (24) and edge.Its all ITO patterns (24) are positioned at a plane.This class capacitive touch screen is to adopt the self-capacitance mode to realize the multi-point touch function.The present invention substitutes its partially conductive circuit with ITO, be positioned at the window area of touch-screen, shown in the ITO conducting wire (26) of Fig. 5; Remaining conducting wire is positioned at non-window area, and shown in the Ag conducting wire (27) of Fig. 5, the conducting wire that is positioned at non-window area can be adopted serigraphy silver slurry and be solidified preparation.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as limitation of the scope of the invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with claims.
Claims (5)
1. a capacitive touch screen conducting wire wiring method is characterized in that, the partially conductive circuit employing ITO conductive film of capacitive touch screen is alternative, draws from the edge, window area of touch-screen; Silver (Ag) conducting wire is adopted in the residue conducting wire, draws from the non-viewing area of touch-screen.
2. capacitive touch screen as claimed in claim 1 conducting wire wiring method is characterized in that described ITO conductive film is the water white transparency conductive film.
3. capacitive touch screen as claimed in claim 1 conducting wire wiring method is characterized in that, described touch-screen is self-capacitance formula touch-screen or is the mutual capacitance type touch-screen.
4. capacitive touch screen as claimed in claim 1 conducting wire wiring method is characterized in that, the preparation method of described silver (Ag) conducting wire is serigraphy.
5. capacitive touch screen as claimed in claim 1 conducting wire wiring method is characterized in that, two ends, described conducting wire connect window area and compliant conductive circuit (FPC).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101093407A CN101996007A (en) | 2009-08-18 | 2009-08-18 | Wiring method for capacitive touch screen electric conductive circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101093407A CN101996007A (en) | 2009-08-18 | 2009-08-18 | Wiring method for capacitive touch screen electric conductive circuit |
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| CN101996007A true CN101996007A (en) | 2011-03-30 |
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| CN2009101093407A Pending CN101996007A (en) | 2009-08-18 | 2009-08-18 | Wiring method for capacitive touch screen electric conductive circuit |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221936A (en) * | 2011-07-19 | 2011-10-19 | 信利半导体有限公司 | Manufacture method for ITO (Indium Tin Oxides) silver paste wiring |
| CN102830873A (en) * | 2012-08-08 | 2012-12-19 | 赣州市德普特科技有限公司 | Capacitive touch screen and manufacture method thereof |
| CN103049155A (en) * | 2012-12-13 | 2013-04-17 | 北京京东方光电科技有限公司 | Embedded touch screen and display device |
| CN103376946A (en) * | 2012-04-13 | 2013-10-30 | 纬创资通股份有限公司 | Touch panel and manufacturing method thereof |
| TWI467456B (en) * | 2012-06-07 | 2015-01-01 | Mstar Semiconductor Inc | Touch panel |
| CN107092408A (en) * | 2011-12-22 | 2017-08-25 | 富士胶片株式会社 | Conducting strip and touch panel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1744341A (en) * | 2004-09-01 | 2006-03-08 | 悠景科技股份有限公司 | Organic LED display panel element and its manufacturing method |
| CN201107767Y (en) * | 2007-11-27 | 2008-08-27 | 胜华科技股份有限公司 | Structure of capacitance type touching control panel joint zone |
| CN201247461Y (en) * | 2008-07-21 | 2009-05-27 | 洋华光电股份有限公司 | Improved capacitance touch control plate structure |
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2009
- 2009-08-18 CN CN2009101093407A patent/CN101996007A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1744341A (en) * | 2004-09-01 | 2006-03-08 | 悠景科技股份有限公司 | Organic LED display panel element and its manufacturing method |
| CN201107767Y (en) * | 2007-11-27 | 2008-08-27 | 胜华科技股份有限公司 | Structure of capacitance type touching control panel joint zone |
| CN201247461Y (en) * | 2008-07-21 | 2009-05-27 | 洋华光电股份有限公司 | Improved capacitance touch control plate structure |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221936A (en) * | 2011-07-19 | 2011-10-19 | 信利半导体有限公司 | Manufacture method for ITO (Indium Tin Oxides) silver paste wiring |
| CN107092408A (en) * | 2011-12-22 | 2017-08-25 | 富士胶片株式会社 | Conducting strip and touch panel |
| CN107092408B (en) * | 2011-12-22 | 2020-08-04 | 富士胶片株式会社 | Conductive sheet and touch panel |
| CN103376946A (en) * | 2012-04-13 | 2013-10-30 | 纬创资通股份有限公司 | Touch panel and manufacturing method thereof |
| US9253892B2 (en) | 2012-04-13 | 2016-02-02 | Wistron Corporation | Peripheral circuit of touch panel and manufacturing method thereof |
| CN103376946B (en) * | 2012-04-13 | 2016-03-16 | 纬创资通股份有限公司 | Touch panel and manufacturing method thereof |
| TWI467456B (en) * | 2012-06-07 | 2015-01-01 | Mstar Semiconductor Inc | Touch panel |
| CN102830873A (en) * | 2012-08-08 | 2012-12-19 | 赣州市德普特科技有限公司 | Capacitive touch screen and manufacture method thereof |
| CN102830873B (en) * | 2012-08-08 | 2015-10-28 | 赣州市德普特科技有限公司 | Capacitive touch screen and manufacture method thereof |
| CN103049155A (en) * | 2012-12-13 | 2013-04-17 | 北京京东方光电科技有限公司 | Embedded touch screen and display device |
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Addressee: Shenzhen OFilm Tech Co.,Ltd. Niu Yuxiang Document name: the First Notification of an Office Action |
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Application publication date: 20110330 |