CN104750279A - Manufacturing method of touch screen - Google Patents
Manufacturing method of touch screen Download PDFInfo
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- CN104750279A CN104750279A CN201310726870.2A CN201310726870A CN104750279A CN 104750279 A CN104750279 A CN 104750279A CN 201310726870 A CN201310726870 A CN 201310726870A CN 104750279 A CN104750279 A CN 104750279A
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- touch screen
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- electrode
- manufacture method
- insulating trip
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Abstract
The invention discloses a manufacturing method of a touch screen. The method comprises the following steps: forming an indium tin oxide film on a substrate; etching the indium tin oxide film to form a plurality of first electrodes and a plurality of second electrodes which are arranged in a matrix form and are mutually insulated, wherein the plurality of first electrodes and the plurality of second electrodes are arranged alternatively in columns, the first electrodes in the same line arranged along a first direction are electrically connected with one another, and the second electrodes in the same column arranged in a second direction intersecting with the first direction are isolated away from one another; forming a plurality of insulation sheets on the indium tin oxide film, wherein each insulation sheet covers the corners of two first electrodes in the same line and the corners of two second electrodes in the same column; forming connecting leads on corresponding insulation sheets by adopting an ink jet printing method in order to electrically connect the second electrodes in the same column arranged along the second direction; and reducing the widths of the connecting leads to be less than 10 microns by adopting a laser machining method. The manufacturing method is simple in manufacturing procedure, and high in machining efficiency.
Description
Technical field
The present invention relates to a kind of manufacture method of touch screen, particularly a kind of manufacture method with the touch screen of mono-layer oxidized indium tin film.
Background technology
Widely, and the touch screen with mono-layer oxidized indium tin (Single Indium Tin Oxide, SITO) structure is because its thickness is thin, manufacturing cost is lower, has more wide application prospect in the application of touch screen.SITO touch screen generally includes a substrate, the indium oxide tin film be formed on substrate, and described indium oxide tin film forms multiple first electrode of the roughly arrangement in matrix and multiple second electrode via methods such as etchings.Multiple second electrode and multiple first electrode gap are arranged.Be electrically connected between multiple first electrodes of same row in a first direction.It is insulation between multiple second electrode, make to be electrically connected between multiple second electrodes of same row in order in the second direction of intersecting at first direction, usually adopt at point of crossing place the mode of metal bridging (bridge) to form plain conductor to be electrically connected the second adjacent electrode, carry out metal bridging as adopted the plain conductor such as silver, copper and connect.
Because plain conductor is higher at the reflectivity of visible light wave range, obviously visual under causing high light, so need by the width control system of plain conductor at below 10um.Yellow light lithography (lithography) the processing procedure etching of Bridge plain conductor general is formed, but gold-tinted micro-photographing process operation is comparatively loaded down with trivial details; Or formed by gasoloid spray printing (Aerosol jet), but aerosol spray print-out rate is comparatively slow, causes working (machining) efficiency lower.
Summary of the invention
In view of above-mentioned condition, be necessary to provide a kind of processing procedure comparatively simple and the manufacture method of the touch screen that working (machining) efficiency is higher.
A manufacture method for touch screen, it comprises the following steps: on substrate, form indium oxide tin film; Etching oxidation indium tin film is to form the arrangement in matrix and multiple first electrode of mutually insulated and multiple second electrode, multiple first electrode and multiple second electrode are alternately arranged by row, mutually be electrically connected between same a line first electrode that first direction arranges, the second electrode of the same row that the second direction that edge and this first direction intersect arranges is spaced; Indium oxide tin film is formed multiple insulating trip, and each insulating trip covers the bight of the bight of two adjacent first electrodes of the same a line along first direction arrangement and two adjacent the second electrodes along the same row of second direction arrangement; Adopt ink jet printing method to be formed on corresponding insulating trip and connect wire, to be electrically connected the second electrode of the same row along second direction arrangement; Within adopting laser processing that the width abatement connecting wire is contracted to 10um.
The manufacture method of touch screen of the present invention, utilizes ink-jet technology and Laser Processing collocation to be formed and connects wire, make the width control system of connection wire at below 10um, simplify procedure for processing; And utilize ink-jet technology ink-jet to begin to take shape connection wire, improve working (machining) efficiency.
Accompanying drawing explanation
Fig. 1 is the vertical view of the touch screen of embodiment of the present invention.
Fig. 2 is the enlarged drawing at II place in Fig. 1.
Fig. 3 is the amplification view along III-III line in Fig. 2.
Fig. 4-Fig. 8 is the manufacture process schematic diagram of the touch screen at II place in Fig. 2, and wherein Fig. 4-Fig. 6 is cut-open view, and Fig. 7-Fig. 8 is vertical view, and Fig. 7 is the vertical view of touch screen shown in Fig. 6.
Fig. 9 is the manufacturing flow chart of the touch screen of embodiment of the present invention.
Main element symbol description
| Touch screen | 100 |
| Substrate | 10 |
| Indium oxide tin film | 30 |
| First electrode | 32 |
| Second electrode | 34 |
| Insulating trip | 50 |
| Connect wire | 70 |
Following embodiment will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Embodiment
Refer to Fig. 1 to Fig. 3, the touch screen 100 of embodiment of the present invention comprises a substrate 10, indium oxide tin film 30, multiple insulating trip 50 and the multistage be formed on substrate 10 surface connect wire 70.In embodiment of the present invention, substrate 10 is made up of transparent insulating material, and it can adopt the material such as clear glass, poly terephthalic acid class plastics (PET) to make.
Indium oxide tin film 30 is formed with multiple first electrode 32 of the roughly arrangement in matrix and multiple second electrode 34, multiple first electrodes 32 and multiple second electrode 34 mutually insulated, and the first electrode 32 and the second electrode 34 are arranged alternately with each other by row.In embodiment of the present invention, the first electrode 32 and the second electrode 34 all roughly assume diamond in shape.First electrode 32 is drive electrode, and along X-direction arrangement same a line first electrode 32 between be mutually electrically connected, with formed drive electrode row.Second electrode 34 is induction electrode, and along Y direction arrangement same row second electrode 34 between spaced, and by multistage connect wire 70 be electrically connected the second adjacent electrode 34 respectively, with formed induction electrode row.Indium oxide tin film 30 is formed on the substrate 10 by sputtering film coating method, then, forms multiple first electrode 32 and multiple second electrode 34 by etching oxidation indium tin film 30.Be appreciated that the first electrode 32 also can be induction electrode, and the second electrode 34 is drive electrode.
Each insulating trip 50 is formed on two first electrodes 32 adjacent with these two the second electrodes 34 of two adjacent the second electrodes 34 along the same row of Y direction arrangement and the same a line along X-direction arrangement, and covers the bight of these two the second electrodes 34 and these two the first electrodes 32.The shape of each insulating trip 50 is roughly rectangle.The shape being appreciated that insulating trip 50 can be also circle, strip etc., as long as it can cover the bight of these two the second electrodes 34 and these two the first electrodes 32.In embodiment of the present invention, insulating trip 50 is formed by ink jet printing method.Insulating trip 50 is formed by heat curing-type or UV type transparent organic material, as poly-(4-Vinyl phenol), polyimide, with polyallyl ether with add the aromatic ether, fragrant carbonizing hydrogen etc. that the poly-fluorine allyl ether of fluorine is representative.
Every section connects wire 70 and is formed on corresponding insulating trip 50, and its two ends are extended out by the edge of insulating trip 50, is electrically connected the bight of adjacent two second electrodes 34 of the same row along Y direction arrangement respectively.So, multiple second electrodes 34 of the same row arranged along Y direction are electrically connected by multistage connection wire 70.Connect wire 70 to be formed by conventional ink-jet printing process collocation laser processing, and it is formed by silver ink, nm of gold ink or nano-copper ink.
Please refer to Fig. 4 to Fig. 9, the manufacture method of the touch screen 100 of embodiment of the present invention comprises the following steps:
S1: form indium oxide layer tin film 30 on the substrate 10.In embodiment of the present invention, substrate 10 is made up of clear glass, and indium oxide tin film 30 is formed via sputtering film coating method.
S2: etching oxidation indium tin film 30 is to form shape complementarity and multiple first electrode 32 of mutually insulated and multiple second electrode 34, and multiple first electrode 32 is arranged alternately with each other by row with multiple second electrode 34.In embodiment of the present invention, the first electrode 32 and the second electrode 34 is formed via method for chemially etching, along same a line of X-direction arrangement multiple first electrodes 32 between be mutually electrically connected, and spaced along multiple second electrodes 34 of same row of Y direction arrangement.
S3: form multiple insulating trip 50 on indium oxide tin film 30, makes each insulating trip 50 cover the bight of the bight of two adjacent second electrodes 34 of the same row along Y direction arrangement and two first electrodes 32 adjacent with these two the second electrodes 34 along the same row of X-direction arrangement.In embodiments of the present invention, insulating trip 50 is formed by ink jet printing method.Being appreciated that insulating trip 50 is not limited to ink jet printing method and is formed, other method also can being adopted to be formed, as being attached on indium oxide tin film 30 by insulation film.
S4: adopt ink jet printing method to be formed on corresponding insulating trip 50 and connect wire 70, and make it connect the bight of adjacent two second electrodes 34 of the same row along Y direction arrangement.Every section connects wire 70 and is formed on corresponding insulating trip 50, every section of two ends connecting wire 70 are extended out by the edge of insulating trip 50, connect the bight of adjacent two second electrodes 34 of the same row along Y direction arrangement respectively, thus described two adjacent the second electrodes 34 are electrically connected.
In embodiment of the present invention, adopt Nano Silver metallic ink, make connection wire 70 be formed in the bight of adjacent two second electrodes 34 of the same row along Y direction arrangement by ink jet printing method, the width connecting wire 70 after spray printing is roughly 30um ~ 50um.Be appreciated that nm of gold ink or nano-copper ink also can be adopted to be formed connects wire.
S5: within adopting laser processing that the width abatement connecting wire 70 is contracted to 10um.The high-power laser beam that laser processing device sends irradiates the edge connecting wire 70, after the power density of laser exceedes material valve value rate density, can directly by the connection wire 70 High temperature ion gasification under normality, auxiliary external force suction, makes the part of laser irradiating position connect wire 70 and removes fast to reduce the width connecting wire 70.
In embodiment of the present invention, the laser of employing is continuous laser, and optical maser wavelength is 1064nm.Be appreciated that and pulse laser also can be adopted to reduce the width of wire 70, the optical maser wavelength sent also is not limited to above-mentioned embodiment.
Be appreciated that at formation indium oxide tin film 30, insulating trip 50 and curing schedule all can be adopted to solidify corresponding rete after connecting wire 70, according to the concrete material of rete, the modes such as hot setting, cold curing, UV solidification can be selected.
In embodiments of the present invention, utilize ink-jet technology and Laser Processing collocation to be formed and connect wire 70, make the width control system of connection wire 70 at below 10um, simplify procedure for processing; And utilize ink-jet technology to begin to take shape connection wire 70, improve working (machining) efficiency.
In addition, for the person of ordinary skill of the art, other various corresponding change and distortion can be made by technical conceive according to the present invention, and all these change the protection domain that all should belong to the claims in the present invention with distortion.
Claims (10)
1. a manufacture method for touch screen, it comprises the following steps:
Substrate forms indium oxide tin film;
Etch this indium oxide tin film to form the arrangement in matrix and multiple first electrode of mutually insulated and multiple second electrode, multiple first electrode and multiple second electrode are alternately arranged by row, mutually be electrically connected between same a line first electrode that first direction arranges, the second electrode of the same row that the second direction that edge and this first direction intersect arranges is spaced;
Indium oxide tin film is formed multiple insulating trip, and each insulating trip covers the bight of the bight of two adjacent first electrodes of the same a line along first direction arrangement and two adjacent the second electrodes along the same row of second direction arrangement;
Adopt ink jet printing method to be formed on corresponding insulating trip and connect wire, to be electrically connected the second electrode of the same row along second direction arrangement;
Within adopting laser processing that the width abatement connecting wire is contracted to 10um.
2. the manufacture method of touch screen as claimed in claim 1, is characterized in that: when ink jet printing forms connection wire, the width of the connection wire after printing is 30um ~ 50um.
3. the manufacture method of touch screen as claimed in claim 1, is characterized in that: when adopting laser processing to reduce the width connecting wire, the laser of employing is continuous laser.
4. the manufacture method of touch screen as claimed in claim 1, is characterized in that: when adopting laser processing to reduce the width connecting wire, the laser of employing is pulse laser.
5. the manufacture method of touch screen as claimed in claim 1, is characterized in that: when adopting laser processing to reduce the width connecting wire, the wavelength of the laser of employing is 1064nm.
6. the manufacture method of touch screen as claimed in claim 1, it is characterized in that: after forming indium oxide tin film, forming each step of insulating trip and formation connection wire, all comprise a curing schedule, to solidify corresponding indium oxide tin film, insulating trip and to connect wire.
7. the manufacture method of touch screen as claimed in claim 6, is characterized in that: the curing that curing schedule adopts is the one in hot setting, cold curing and UV solidification.
8. the manufacture method of touch screen as claimed in claim 1, is characterized in that: when adopting ink jet printing method to form this connection wire, the ink of employing is the one in silver ink, nm of gold ink and nano-copper ink.
9. the manufacture method of touch screen as claimed in claim 1, is characterized in that: the method forming this indium oxide tin film on substrate is sputtering film coating method.
10. the manufacture method of touch screen as claimed in claim 1, is characterized in that: the method forming this insulating trip is ink jet printing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310726870.2A CN104750279A (en) | 2013-12-26 | 2013-12-26 | Manufacturing method of touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310726870.2A CN104750279A (en) | 2013-12-26 | 2013-12-26 | Manufacturing method of touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104750279A true CN104750279A (en) | 2015-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310726870.2A Pending CN104750279A (en) | 2013-12-26 | 2013-12-26 | Manufacturing method of touch screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104750279A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106739494A (en) * | 2016-11-29 | 2017-05-31 | 维沃移动通信有限公司 | A kind of method that ink layer in cover plate processes perforate |
| CN106739493A (en) * | 2016-11-29 | 2017-05-31 | 维沃移动通信有限公司 | A kind of method of the radium-shine perforate of the ink layer in cover plate |
-
2013
- 2013-12-26 CN CN201310726870.2A patent/CN104750279A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106739494A (en) * | 2016-11-29 | 2017-05-31 | 维沃移动通信有限公司 | A kind of method that ink layer in cover plate processes perforate |
| CN106739493A (en) * | 2016-11-29 | 2017-05-31 | 维沃移动通信有限公司 | A kind of method of the radium-shine perforate of the ink layer in cover plate |
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Application publication date: 20150701 |