CN101989134A - Flat-panel touch screen and manufacturing method thereof - Google Patents

Flat-panel touch screen and manufacturing method thereof Download PDF

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Publication number
CN101989134A
CN101989134A CN2009100129191A CN200910012919A CN101989134A CN 101989134 A CN101989134 A CN 101989134A CN 2009100129191 A CN2009100129191 A CN 2009100129191A CN 200910012919 A CN200910012919 A CN 200910012919A CN 101989134 A CN101989134 A CN 101989134A
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China
Prior art keywords
glue
ito film
ito
touch screen
film
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Pending
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CN2009100129191A
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Chinese (zh)
Inventor
杨谦
孙密星
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Shenyang Chenxun Simcom Technology Co Ltd
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Shenyang Chenxun Simcom Technology Co Ltd
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Priority to CN2009100129191A priority Critical patent/CN101989134A/en
Publication of CN101989134A publication Critical patent/CN101989134A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a flat-panel touch screen, which comprises a lining plate, a flexible printed circuit (FPC) connector, an upper layer indium Tin oxide (ITO) film, a lower layer ITO film and a glue material arranged between the upper layer ITO film and the lower layer ITO film. The glue material contains adhesive glue, silver slurry, insulating glue, optical glue arranged above the upper layer ITO film and optical glue arranged below the lower layer ITO film, wherein the region printed with the adhesive glue is a frame type region; and the hot pressure region arranged above the upper layer ITO film and connected with the FPC connector is the region with the optical glue eliminated. The invention also discloses a manufacturing method of the flat-panel touch screen. The invention has the advantages that the optical glue in the hot pressure region is eliminated and the insulating glue substitutes the auxiliary silver slurry to improve the printing error of the touch screen through the frame type coating with the glue.

Description

Pure plane touch screen and manufacture method thereof
Technical field
The present invention relates to a kind of pure plane touch screen and manufacture method thereof.
Background technology
Pure plane touch screen (LTP, Lens Touch Panel) has the pure flat outward appearance and the function of touch concurrently, is the innovation of touch screen surface design.The ultra-thinization design of mobile phone is fit to adopt LTP to realize.It is convenient to the expansion of handset viewing window, can accomplish touch-screen and hand set machine shell surfacing, can make various gorgeous color appearance surfaces, can do thinlyyer than the mobile phone that uses conventional touch screen on the thickness, highly sensitive, can not be broken, appearance and usability that high-wearing feature has been given this product fine, really reached the perfect adaptation of performance and outward appearance.This brand-new touch-screen has obtained users' approval with convenient and practical characteristic.
But along with the competition in market, the improving constantly of customer requirement, to the lifting that profile pattern requires, the product of continuing to use original touch screen design theory has been not enough to satisfy requirement of client gradually.There is following defective in the existing design of touch panel: first, in former design specifications, there is large-area adhesion glue (being subordinate to pressure sensitive adhesive) to exist, and large-area adhesion glue is behind Lens applying processing procedure, the surface smoothness that has been easy to generate uneven harmful effect on the Lens surface and giving is produced and technology has been brought a lot of problems, also makes the yield reduction of product; The second, OCA (optical cement) is fitted on the liner plate, and protruding phenomenon appears in FPC (factor power corrector flexible PCB) hot pressing place sometimes after the combination; The 3rd, silver slurry routing layer has large-area auxiliary silver slurry to exist, and needs the gap greater than 0.4 between silver slurry cabling and the auxiliary silver slurry.The material of this opposite version and typography have certain requirement, and some material and typography can make 0.4 gap stay slight indenture on the face version.Therefore, need a kind of brand-new design especially, both can reduce cost, guarantee the intact performance of LTP and the integral smoothness and attractive in appearance on surface again, to satisfy market and users' needs.
Summary of the invention
The technical problem to be solved in the present invention is in order to overcome the not enough defective of LTP surface smoothness in the prior art, a kind of pure plane touch screen and manufacture method thereof to be provided.
The present invention solves above-mentioned technical matters by following technical proposals:.
A kind of pure plane touch screen, it comprises a liner plate and a FPC connector, its characteristics are that it also comprises:
An one upper strata ITO film and an ITO of lower floor (Indium Tin Oxides, nano indium tin metal oxide) film,
Glue material between this upper strata ITO film and the ITO of this lower floor film, wherein this glue material comprises silver-colored slurry, insulating gel and adhesion glue, and the zone of printing this adhesion glue is the frame zone,
Be positioned at the optical cement and the optical cement that is positioned at the ITO of this lower floor film below of ITO film top, this upper strata, the hot pressing that wherein links to each other with this FPC connector above the ITO film of this upper strata zone is the zone of removal optical cement.
Preferably, the gap between this insulating gel and this silver slurry cabling is 0.15mm.
The present invention also provides a kind of manufacture method of pure plane touch screen as claimed in claim 1, and its characteristics are that it may further comprise the steps:
S 1, prepare the ITO film;
S 2, between upper and lower layer ITO film coating glue material, wherein this glue material comprises adhesion glue and insulating gel, and applies this adhesion glue in the frame zone;
S 3, attaching optical cement respectively above the ITO film of this upper strata and below the ITO of this lower floor film;
S 4, hot pressing zone that this upper strata ITO film top is linked to each other with this FPC connector the optical cement removal.
Preferably, step S 2In further comprising the steps of:
S 21, silver slurry printing;
S 22, at silver slurry cabling outside printing insulating gel;
S 23, solidify back ACP (anisotropic conductive, Anisotropic Conductive Paste) printing;
S 24, solidify back printing adhesion glue.
Positive progressive effect of the present invention is:
1, the coating scope of adhesion glue is applied by original large tracts of land and changes the frame coating into, has eliminated the concavo-convex phenomenon on applying rear lining plate surface.
2, the optical cement of the hot pressing location that the ITO of lower floor film below is linked to each other with FPC connector is removed, and has eliminated the projection phenomenon in this FPC hot pressing zone.
3, replace assisting the silver slurry with insulating gel, not only eliminated the indenture of combination back product surface, also make the printing error of script 0.4mm be decreased to 0.15mm, the use of insulating gel has simultaneously also reduced electromagnetic interference (EMI) and has strengthened mobile phone signal.
Description of drawings
Fig. 1 is the structural section figure of pure plane touch screen of the present invention.
Fig. 2 is the coating scope synoptic diagram of adhesion glue in the prior art.
Fig. 3 is the coating scope synoptic diagram of adhesion glue among the present invention.
Fig. 4 is the coating scope synoptic diagram of optical cement in the prior art.
Fig. 5 is the coating scope synoptic diagram of optical cement among the present invention.
Fig. 6 is the coating scope synoptic diagram that the silver slurry reaches auxiliary silver slurry in the prior art.
Fig. 7 is the coating scope synoptic diagram of silver slurry and insulating gel among the present invention.
Fig. 8 is the present invention's printing process flow diagram of ITO film at the middle and upper levels.
Fig. 9 is the printing process flow diagram of the ITO of lower floor film among the present invention.
Figure 10 is the post-order process process flow diagram after the combination of levels ITO film among the present invention.
Embodiment
Lift a preferred embodiment below, and come the clearer the present invention that intactly illustrates in conjunction with the accompanying drawings.
With reference to figure 1, the structural section figure of pure plane touch screen of the present invention.This pure plane touch screen comprises a liner plate 1 and a FPC connector 2, have optical cement 5, the ITO of a lower floor film 3, glue material 4, a upper strata ITO film 3, optical cement 5 and inscription plate (lens) 6 on this liner plate 1 successively, wherein, glue material between this upper strata ITO film and the ITO of this lower floor film comprises adhesion glue, silver slurry and insulating gel, the zone of printing this adhesion glue is the frame zone, and the optical cement in the hot pressing zone that ITO film top in this upper strata links to each other with this FPC connector is removed.
With reference to figure 2-Fig. 7, for pure plane touch screen among prior art and the present invention is coated with the contrast that is covered with at the glue material.With reference to figure 2, Fig. 3, in former design, there is large-area adhesion glue (being subordinate to pressure sensitive adhesive) to exist, and large-area adhesion glue is behind Lens applying processing procedure, the surface smoothness that has been easy to generate uneven harmful effect on the Lens surface, brought a lot of problems for production and technology, the yield of product is reduced.The present invention is directed to this situation and use large-area adhesion glue instead the closed-in construction (see figure 3), only the frame position around product applies adhesion glue, and product is removed in the concavo-convex phenomenon on applying rear lining plate surface.With reference to figure 4, Fig. 5, OCA (optical cement) is fitted on the liner plate, and the phenomenon of slight convex appears in combination FPC hot pressing place later on sometimes.In order to improve this problem, the present invention is fitted in OCA on the ITO film of upper strata and under the ITO of the lower floor film, and has removed the OCA (see figure 5) in FPC hot pressing place.Thereby solved the slight convex phenomenon that FPC hot pressing place of combination back produces, further guaranteed the surperficial integral smoothness of LTP.With reference to figure 6, Fig. 7, available technology adopting be large-area auxiliary silver slurry, and the gap (see figure 6) of 0.4mm is arranged between the silver slurry cabling.Large-area auxiliary silver slurry has increased much the cost of product, and the combination back has indenture to occur on the surface of product.Adopt insulating gel to replace auxiliary silver slurry among the present invention, surperficial indenture has not only been eliminated as printing error in the gap of having only 0.15mm between insulating gel and the silver slurry cabling after the combination, also lowered the cost (see figure 7) of product.
The present invention also provides a kind of manufacture method of pure plane touch screen, and it may further comprise the steps:
S 1, prepare the ITO film;
S 2, between upper and lower layer ITO film coating glue material, wherein the glue material comprises adhesion glue, silver slurry and insulating gel;
S 3, attach optical cement.
With reference to figure 8, the printing step of upper strata ITO film comprises:
Step 101 cuts the ITO film;
Step 102, the ITO film is aging;
Step 103, ITO film printing acid-proof ink;
Step 104 is carried out UV and is solidified;
Step 105, the etching striping;
Step 106, the printing peelable glue;
Step 107 is solidified back silver slurry printing;
Step 108 is solidified the back at silver slurry cabling outside printing insulating gel 1, with the auxiliary silver slurry that replaces originally being adopted, like this at the cost-effective mobile phone signal that also strengthened simultaneously;
Step 109 is solidified back printing insulating gel 2;
Step 110 is solidified back ACP printing;
Step 111 is solidified back printing adhesion glue, and wherein the printing zone of this adhesion glue is the frame zone;
Step 112 enters back process operation flow process.
With reference to figure 9, the printing step of the ITO of lower floor film comprises:
Step 201 cuts the ITO film;
Step 202, the ITO film is aging;
Step 203, ITO film printing acid-proof ink;
Step 204 is solidified the after etching striping;
Step 205, printing Dot glue (glue point);
Step 206 is solidified back printing peelable glue;
Step 207 is solidified back silver slurry printing;
Step 208 is solidificated in silver slurry cabling outside printing insulating gel 1, with the auxiliary silver slurry that replaces originally being adopted;
Step 209 is solidified back printing insulating gel 2;
Step 210 is solidified back ACP printing;
Step 211 is solidified back printing adhesion glue, and wherein the printing zone of this adhesion glue is the frame zone;
Step 212 enters back process operation flow process.
With reference to Figure 10, back process operation flow process is:
Step 300, back process operation flow process begins;
Step 301 tears the peelable glue on the ITO Film of upper strata off;
Step 302 tears the peelable glue on the ITO Film of lower floor off;
Step 303, worker's inspection is also made up this levels ITO film;
Step 304 attaches OCA above the ITO film of this upper strata;
Step 305 attaches OCA below the ITO of this lower floor film;
Step 306, the OCA removal in the hot pressing zone that this upper strata ITO film top is linked to each other with this FPC connector;
Step 307 is carried out post-order process, and this post-order process is same as the prior art.
Though more than described the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, under the prerequisite that does not deviate from principle of the present invention and essence, can make numerous variations or modification to these embodiments.Therefore, protection scope of the present invention is limited by appended claims.

Claims (4)

1. pure plane touch screen, it comprises a liner plate, a FPC connector and an inscription plate, it is characterized in that it also comprises:
An one upper strata ITO film and the ITO of a lower floor film,
Glue material between this upper strata ITO film and the ITO of this lower floor film, wherein this glue material comprises silver-colored slurry, insulating gel and adhesion glue, and the zone of printing this adhesion glue is the frame zone,
Be positioned at the optical cement and the optical cement that is positioned at the ITO of this lower floor film below of ITO film top, this upper strata, the hot pressing that wherein links to each other with this FPC connector above the ITO film of this upper strata zone is the zone of removal optical cement.
2. pure plane touch screen as claimed in claim 1 is characterized in that, the gap between this insulating gel and this silver slurry cabling is 0.15mm.
3. the manufacture method of a pure plane touch screen as claimed in claim 1 is characterized in that, it may further comprise the steps:
S 1, prepare the ITO film;
S 2, between upper and lower layer ITO film coating glue material, wherein this glue material comprises silver slurry and insulating gel, and applies this adhesion glue in the frame zone;
S 3, attaching optical cement respectively above the ITO film of this upper strata and below the ITO of this lower floor film;
S 4, hot pressing zone that this upper strata ITO film top is linked to each other with this FPC connector the optical cement removal.
4. the manufacture method of pure plane touch screen as claimed in claim 3 is characterized in that, step S 2In further comprising the steps of:
S 21, silver slurry printing;
S 22, at silver slurry cabling outside printing insulating gel;
S 23, solidify back ACP printing;
S 24, solidify back printing adhesion glue.
CN2009100129191A 2009-07-31 2009-07-31 Flat-panel touch screen and manufacturing method thereof Pending CN101989134A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009100129191A CN101989134A (en) 2009-07-31 2009-07-31 Flat-panel touch screen and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009100129191A CN101989134A (en) 2009-07-31 2009-07-31 Flat-panel touch screen and manufacturing method thereof

Publications (1)

Publication Number Publication Date
CN101989134A true CN101989134A (en) 2011-03-23

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102279682A (en) * 2011-08-30 2011-12-14 深圳市豪威薄膜技术有限公司 Novel capacitive touch screen, manufacturing method thereof and touch screen terminal
CN102331878A (en) * 2011-09-15 2012-01-25 天津市中环高科技有限公司 Anti-oxidation method of touch screen silver wires
CN103056140A (en) * 2012-12-18 2013-04-24 黄山市中显微电子有限公司 Glue cleaning method after accessories are glued on glass
US8710516B2 (en) 2011-08-10 2014-04-29 Fortrend Taiwan Scientific Corp. Touch panel structure and manufacturing method thereof
CN103885654A (en) * 2013-03-12 2014-06-25 深圳市信濠精密技术股份有限公司 Electromagnetism and capacitance integrated touch screen and manufacturing method thereof
CN106125993A (en) * 2016-08-25 2016-11-16 京东方科技集团股份有限公司 The manufacture method of touch screen and conduction peelable glue
CN107562301A (en) * 2017-10-30 2018-01-09 深圳市盛迪瑞科技有限公司 Fixed connection method and connector between large size capacitive touch screen and its interior external screen
CN113377249A (en) * 2021-06-18 2021-09-10 安徽方兴光电新材料科技有限公司 Surface friction-resistant resistive touch screen assembly process

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8710516B2 (en) 2011-08-10 2014-04-29 Fortrend Taiwan Scientific Corp. Touch panel structure and manufacturing method thereof
CN102279682A (en) * 2011-08-30 2011-12-14 深圳市豪威薄膜技术有限公司 Novel capacitive touch screen, manufacturing method thereof and touch screen terminal
CN102331878A (en) * 2011-09-15 2012-01-25 天津市中环高科技有限公司 Anti-oxidation method of touch screen silver wires
CN102331878B (en) * 2011-09-15 2013-08-14 天津市中环高科技有限公司 Anti-oxidation method of touch screen silver wires
CN103056140B (en) * 2012-12-18 2016-02-17 黄山市中显微电子有限公司 A kind of gel resin method on glass after gluing accessory
CN103056140A (en) * 2012-12-18 2013-04-24 黄山市中显微电子有限公司 Glue cleaning method after accessories are glued on glass
CN103885654A (en) * 2013-03-12 2014-06-25 深圳市信濠精密技术股份有限公司 Electromagnetism and capacitance integrated touch screen and manufacturing method thereof
CN106125993A (en) * 2016-08-25 2016-11-16 京东方科技集团股份有限公司 The manufacture method of touch screen and conduction peelable glue
WO2018036163A1 (en) * 2016-08-25 2018-03-01 京东方科技集团股份有限公司 Touch screen production method and electrically conductive peelable tape
CN106125993B (en) * 2016-08-25 2019-05-10 京东方科技集团股份有限公司 The production method of touch screen and conductive peelable glue
US10421888B2 (en) 2016-08-25 2019-09-24 Boe Technology Group Co., Ltd. Method for manufacturing touch panel and conductive strippable adhesive
CN107562301A (en) * 2017-10-30 2018-01-09 深圳市盛迪瑞科技有限公司 Fixed connection method and connector between large size capacitive touch screen and its interior external screen
CN107562301B (en) * 2017-10-30 2024-01-30 深圳市盛迪瑞科技有限公司 Large-size capacitive touch screen, and fixed connection method and connection piece between inner screen and outer screen of large-size capacitive touch screen
CN113377249A (en) * 2021-06-18 2021-09-10 安徽方兴光电新材料科技有限公司 Surface friction-resistant resistive touch screen assembly process

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Application publication date: 20110323