CN106951122B - Preparation method of touch sensor and touch sensor - Google Patents
Preparation method of touch sensor and touch sensor Download PDFInfo
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- CN106951122B CN106951122B CN201710164395.2A CN201710164395A CN106951122B CN 106951122 B CN106951122 B CN 106951122B CN 201710164395 A CN201710164395 A CN 201710164395A CN 106951122 B CN106951122 B CN 106951122B
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- touch sensor
- electrode lead
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- etching paste
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
Abstract
The invention provides a preparation method of a touch sensor and the touch sensor, wherein the preparation method comprises the following steps: s1: providing a substrate with a conductive film, coating etching paste on a window area of the substrate to form a conductive pattern, and coating the etching paste on a wiring area of the substrate to form an electrode lead groove for forming an electrode lead in the wiring area; s2: filling conductive ink into the electrode lead groove; s3: curing the substrate; s4: washing with water to remove the etching paste; on one hand, the conductive ink in the adjacent electrode lead grooves can be prevented from being fused with each other, the problem that lines are easy to fuse in the ink-jet printing technology is solved, and the yield of the manufactured touch sensor is increased; on the other hand, the problems of conductive ink shrinkage and the like in the ink-jet printing technology can be solved, the curing and forming of the conductive ink are facilitated, and the electrode lead formed by the cured conductive ink has good flatness and appearance.
Description
Technical Field
The invention relates to the field of touch control, in particular to a preparation method for preparing a touch sensor with high efficiency and high yield and the touch sensor.
Background
At present, the main manufacturing processes of touch sensors in the fields of touch screens, photoelectric displays and the like are yellow etching, screen printing and laser processes. The yellow light and silk screen printing process needs a plurality of process steps, small process window, large manufacturing difficulty and serious pollution, the laser process steps are relatively simplified, the pollution degree is small, but the efficiency is low.
The ink-jet printing technology has high efficiency and little pollution, and can be used for integrally forming large-size or flexible products, so the application of the ink-jet printing technology in the preparation of the touch sensor is concerned, but the defects of the finished products manufactured by the ink-jet printing technology at high precision can be amplified, and the yield cannot be greatly improved.
In view of the above, there is a need for an improved method for manufacturing a touch sensor and a touch sensor to solve the above problems.
Disclosure of Invention
The invention aims to provide a method for preparing a touch sensor with high efficiency and high yield and the touch sensor.
In order to achieve the purpose, the invention adopts the following technical scheme: a preparation method of a touch sensor comprises the following steps:
s1: providing a substrate with a conductive film, coating etching paste on a window area of the substrate to form a conductive pattern, and coating the etching paste on a wiring area of the substrate to form an electrode lead groove for forming an electrode lead in the wiring area;
s2: filling conductive ink into the electrode lead groove;
s3: curing the substrate;
s4: and washing with water to remove the etching paste.
As a further improved technical solution of the present invention, the following steps are further included between step S1 and step S2: UV curing or heat curing the etching paste to etch the conductive film.
As a further improved technical solution of the present invention, step S2 specifically includes: and filling conductive ink into the electrode lead groove in an ink-jet printing mode.
As a further improved technical scheme of the invention, the etching paste is coated on the window area and the wiring area in a screen printing mode.
In order to achieve the above object, the present invention further provides a touch sensor, wherein the touch sensor is prepared by the above preparation method of the touch sensor.
In order to achieve the above object, the present invention further provides a method for manufacturing a touch sensor, including the steps of:
a: providing a substrate with a conductive film, wherein the periphery of the conductive film on the substrate is provided with a wiring area, etching paste is coated on the conductive film to form a conductive pattern, and barrier paste is coated on the wiring area to form an electrode lead groove for forming an electrode lead in the wiring area;
b: filling conductive ink into the electrode lead groove;
c: UV curing or thermally curing the substrate;
d: and washing with water to remove the etching paste and the barrier paste.
As a further improved technical scheme of the invention, the barrier paste is an inert solid or semi-solid paste.
As a further improved technical scheme of the invention, the step b specifically comprises the following steps: and filling conductive ink into the electrode lead groove in an ink-jet printing mode.
As a further improved technical scheme of the invention, the etching paste is coated on the window area in a screen printing mode, and the barrier paste is coated on the wiring area in a screen printing mode.
In order to achieve the above object, the present invention further provides a touch sensor, wherein the touch sensor is prepared by the above preparation method of the touch sensor.
The invention has the beneficial effects that: according to the invention, when the touch sensor is prepared, the electrode lead grooves for forming the electrode leads are formed on the wiring area of the substrate, the electrode lead grooves are filled with conductive ink, and the electrode leads are formed after the conductive silver ink is solidified, so that on one hand, the conductive ink in the adjacent electrode lead grooves can be prevented from being mutually fused, the problem of easy fusion of lines in the ink-jet printing technology is solved, and the yield of the prepared touch sensor is increased; on the other hand, the problems of conductive ink shrinkage and the like in the ink-jet printing technology can be solved, the curing and forming of the conductive ink are facilitated, and the electrode lead formed by the cured conductive ink has good flatness and appearance.
Drawings
Fig. 1 is a flowchart of a method for manufacturing a touch sensor according to a first embodiment of the present invention.
Fig. 2 is a flowchart of a method for manufacturing a touch sensor according to a second embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to the embodiments shown in the drawings, and reference is made to fig. 1 to 2, which are preferred embodiments of the present invention.
Referring to fig. 1, in a first embodiment of the present invention, the present invention provides a method for manufacturing a touch sensor and a touch sensor manufactured by the method for manufacturing the touch sensor, where the touch sensor includes a substrate having a conductive film, the substrate includes a window area and a routing area located at a periphery of the window area, and the conductive film covers the window area and the routing area.
The preparation method comprises the following steps:
s1: providing the substrate with the conductive film, coating etching paste on a window area of the substrate to form a conductive pattern, and coating the etching paste on a wiring area of the substrate to form an electrode lead groove for forming an electrode lead in the wiring area;
specifically, in step S1, the etching paste is applied to the window area and the routing area by screen printing.
S2: filling conductive ink into the electrode lead groove;
in this embodiment, the conductive ink in step S2 is silver ink, and step S2 specifically includes: and conductive ink is filled in the electrode lead wire groove in an ink-jet printing mode, so that the preparation efficiency of the touch sensor can be increased, and the pollution is reduced.
Forming an electrode lead groove on the wiring area through the etching paste in the step S1, and then directly filling silver ink into the electrode lead groove in an ink-jet printing mode, so that on one hand, conductive ink in adjacent electrode lead grooves can be prevented from being fused with each other, the problem that lines are easy to fuse in the ink-jet printing technology is solved, and the yield of the manufactured touch sensor is increased; on the other hand, the problems of conductive ink shrinkage and the like in the ink-jet printing technology can be solved, the curing and forming of the conductive ink are facilitated, and the electrode lead formed by the cured conductive ink has good flatness and appearance.
Further, the following steps are also included between step S1 and step S2: UV curing or heat curing the etching paste to etch the conductive film. On one hand, after the etching paste is cured by UV or thermally, etching components in the etching paste can react with the conductive film, so that the etching components in the etching paste are prevented from transferring into the conductive ink and influencing the conductive function of the conductive ink, namely the etching components in the etching paste cannot influence the conductive function of the conductive ink; on the other hand, the etching paste becomes solid paste after being subjected to UV curing or thermocuring, so that the conductive ink in the adjacent electrode lead grooves can be better prevented from being fused with each other, and the flatness of the electrode leads formed by the cured conductive ink is improved.
S3: curing the substrate;
after UV curing or thermal curing the etching paste between steps S1 and S2, "curing the substrate" in step S3 means curing the conductive ink to form electrode leads.
Of course, if the etching paste is not UV-cured or thermally cured between steps S1 and S2, "curing the substrate" in step S3 includes curing the etching paste to etch the conductive film and curing the conductive ink to form an electrode lead.
S4: and washing with water to remove the etching paste.
After the cured substrate is washed by water, the etching paste and other impurities can be removed, and the cured conductive ink, namely the electrode lead, is reserved, so that the touch sensor is formed.
Referring to fig. 2, in a second embodiment of the present invention, the present invention provides another method for manufacturing a touch sensor and a touch sensor manufactured by the method for manufacturing the touch sensor, where the touch sensor includes a substrate having a conductive film, a routing area is provided on the substrate at a periphery of the conductive film, that is, the routing area does not have the conductive film, and a portion of the substrate having the conductive film is a window area.
The preparation method comprises the following steps:
a: providing a substrate with a conductive film, wherein the periphery of the conductive film on the substrate is provided with a wiring area, etching paste is coated on the conductive film to form a conductive pattern, and barrier paste is coated on the wiring area to form an electrode lead groove for forming an electrode lead in the wiring area;
specifically, in the step a, etching paste is coated on the conductive film by means of screen printing, and barrier paste is coated on the wiring area by means of screen printing.
The blocking paste is inert solid or semi-solid paste, such as a gel-state mixture of barium sulfate and cellulose, so that a plurality of electrode lead grooves can be formed on the wiring area.
b: filling conductive ink into the electrode lead groove;
in this embodiment, the conductive ink in step b is silver ink, and step b specifically includes: and conductive ink is filled in the electrode lead wire groove in an ink-jet printing mode, so that the preparation efficiency of the touch sensor can be increased, and the pollution is reduced.
Forming an electrode lead slot on the wiring area through the solid or semi-solid blocking paste in the step a, and then directly filling silver ink into the electrode lead slot in an ink-jet printing mode, so that on one hand, conductive ink in adjacent electrode lead slots can be blocked from being fused with each other, the problem that lines are easy to fuse in the ink-jet printing technology is solved, and the yield of the manufactured touch sensor is increased; on the other hand, the problems of conductive ink shrinkage and the like in the ink-jet printing technology can be solved, the curing and forming of the conductive ink are facilitated, and the electrode lead formed by the cured conductive ink has good flatness and appearance.
The blocking paste is an inert solid or semi-solid paste, so that the components in the blocking paste are not transferred into the conductive ink and the conductivity of the conductive ink is not affected.
c: UV curing or thermally curing the substrate;
the UV curing or thermal curing of the substrate in the step c specifically includes UV curing or thermal curing of an etching paste to etch the conductive film; curing the conductive ink to form an electrode lead.
d: and washing with water to remove the etching paste and the barrier paste.
After the cured substrate is washed by water, the etching paste, the blocking paste and other impurities can be removed, and the cured conductive ink, namely the electrode lead, is reserved, so that the touch sensor is formed.
In summary, when the touch sensor is manufactured, the electrode lead grooves for forming the electrode leads are formed on the wiring area of the substrate, the electrode lead grooves are filled with conductive ink, and the electrode leads are formed after the conductive silver ink is solidified, so that on one hand, the conductive ink in the adjacent electrode lead grooves can be prevented from being fused with each other, the problem that lines are easy to fuse in the inkjet printing technology is solved, and the yield of the manufactured touch sensor is increased; on the other hand, the problems of conductive ink shrinkage and the like in the ink-jet printing technology can be solved, the curing and forming of the conductive ink are facilitated, and the electrode lead formed by the cured conductive ink has good flatness and appearance.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (4)
1. A preparation method of a touch sensor is characterized by comprising the following steps: the preparation method comprises the following steps:
s1: providing a substrate with a conductive film, wherein the substrate comprises a window area and a wiring area positioned at the periphery of the window area, the conductive film covers the window area and the wiring area, etching paste is coated on the window area of the substrate to form a conductive pattern, the etching paste is coated on the wiring area of the substrate to form an electrode lead groove for forming an electrode lead in the wiring area, and the electrode lead groove is positioned between the etching paste in the wiring area;
s2: filling conductive ink into the electrode lead groove;
s3: curing the substrate;
s4: washing with water to remove the etching paste;
the steps between the step S1 and the step S2 further include the following steps: UV curing or heat curing the etching paste to etch the conductive film.
2. The method for manufacturing a touch sensor according to claim 1, wherein: step S2 specifically includes: and filling conductive ink into the electrode lead groove in an ink-jet printing mode.
3. The method for manufacturing a touch sensor according to claim 1, wherein: the etching paste is coated on the window area and the wiring area in a screen printing mode.
4. A touch sensor, comprising: the touch sensor is prepared by the preparation method of the touch sensor according to any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710164395.2A CN106951122B (en) | 2017-03-20 | 2017-03-20 | Preparation method of touch sensor and touch sensor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710164395.2A CN106951122B (en) | 2017-03-20 | 2017-03-20 | Preparation method of touch sensor and touch sensor |
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| CN106951122A CN106951122A (en) | 2017-07-14 |
| CN106951122B true CN106951122B (en) | 2021-01-05 |
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| CN110709804A (en) * | 2017-09-21 | 2020-01-17 | 深圳市柔宇科技有限公司 | Manufacturing method of touch electrode |
| CN110119224A (en) * | 2019-05-17 | 2019-08-13 | 苏州诺菲纳米科技有限公司 | Touch sensing and preparation method thereof |
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| CN102903423B (en) * | 2012-10-25 | 2015-05-13 | 南昌欧菲光科技有限公司 | Conduction structure in transparent conduction film, transparent conduction film and manufacture method thereof |
| CN103226414B (en) * | 2013-05-02 | 2015-04-08 | 深圳欧菲光科技股份有限公司 | Touch screen and preparation method thereof |
| CN103294271A (en) * | 2013-05-30 | 2013-09-11 | 南昌欧菲光科技有限公司 | Conducting film of touch screen and method for manufacturing conducting film |
| CN104598083A (en) * | 2013-10-31 | 2015-05-06 | 中环高科（天津）股份有限公司 | Method for manufacturing OGS through printing process |
| CN103823595A (en) * | 2014-03-13 | 2014-05-28 | 南昌欧菲光科技有限公司 | Touch screen preparation method |
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Effective date of registration: 20220211 Address after: 215000 plant a, Qingqiu industrial square, No. 126, Qingqiu street, Suzhou Industrial Park, Jiangsu Province Patentee after: NUOVO FILM SUZHOU CHINA Inc. Patentee after: Anhui Nuojin Nano Technology Co., Ltd Address before: 215300 unit B, 1st floor, No.5 factory building, Xinxing Industrial Square, 78 Xinglin street, Suzhou Industrial Park, Jiangsu Province Patentee before: NUOVO FILM SUZHOU CHINA Inc. |
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