CN102929462A - Capacitive touch panel - Google Patents
Capacitive touch panel Download PDFInfo
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- CN102929462A CN102929462A CN2012104195847A CN201210419584A CN102929462A CN 102929462 A CN102929462 A CN 102929462A CN 2012104195847 A CN2012104195847 A CN 2012104195847A CN 201210419584 A CN201210419584 A CN 201210419584A CN 102929462 A CN102929462 A CN 102929462A
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Abstract
The invention discloses a capacitive touch panel and a manufacturing method thereof. The manufacturing method comprises the following steps of: laying a conducting layer on a single side of a transparent base material; and forming a circuitous pattern on the base material through the processes of photoresist coating, exposure, development, etching and the like, wherein the circuitous pattern comprises a fine grid pattern (a) of a visible area and a conducting wire pattern (b) of a border area. The capacitive touch panel with the structure has the advantages of thin thickness, high performance, simple manufacturing process and the like.
Description
Technical field
The present invention relates to a kind of capacitance type touch-control panel, belong to the contact panel field.
Background technology
Capacitance type touch-control panel generally is comprised of IC chip, flexible circuit board, glass cover-plate and sensor four parts.Wherein sensor is the core component of capacitance type touch-control panel, is comprised of drive electrode and induction electrode.Can be divided into glass structure and PET membrane structure according to sensor substrate; Can be divided into gold-tinted technique and silk-screen printing technique according to sensor manufacturing process.
The manufacturing of capacitance type touch-control panel need to be used the electrically conducting transparent circuit that expensive tin indium oxide is made viewfinder area; With molybdenum aluminium molybdenum, silver or copper alloy made frame region line material." indium " in the tin indium oxide is rare earth element, and along with international rare earth price day by day raises, the cost of manufacture of Indium-tin Oxide Transparent Conductive Film is also more and more higher; Need to adopt the mode of vacuum magnetic-control sputtering evenly to be plated in above the PET film owing to tin indium oxide in addition, and PET film non-refractory, therefore this starting material manufacture difficulty is larger, and the tin indium oxide sheet resistance minimum of volume production level only has 100 Ω/.Can't satisfy the large scale product to the demand of sheet resistance.
In addition, capacitance type touch-control panel electrically conducting transparent circuit and frame conducting wire complete at twice, generally make first the electrically conducting transparent circuit of window area, and then make frame conducting wire, technique relative complex.
At last, the main flow way of capacitance type touch-control panel has two kinds: a kind of is that drive electrode and induction electrode are separately made, and completes rear usefulness optics glue laminating together; Another kind is to make respectively drive electrode and induction electrode at the tow sides of transparent base.These two kinds of structure fabrication techniques are more complicated all.
Summary of the invention
Technical matters to be solved by this invention provides that a kind of thin thickness, performance are good, the simple capacitance type touch-control panel of manufacture craft.
For addressing the above problem, the technical solution used in the present invention is:
Form a uniform conductive layer by modes such as magnetic control sputtering plating, evaporation, plating or coatings at the transparent base single face.This transparent base can be the material of the excellent in optical properties such as glass, PET, PC, PMMA; This conductive layer is the metals such as the lower gold, silver of resistance value, copper, aluminium.Then be coated with photoresistance, with mask plate photoresistance exposed at this conductive layer, then pass through development, etching, stripping, namely finished the laying of all circuit patterns of sensor.
According to the physiological make-up of human eye, lines are during apart from 72um, and are fuzzy between lines; Lines are during apart from 40um, and human eye can not be differentiated.So the present invention utilizes this principle, the gluing of employing, exposure, then development, etching, this gold-tinted technique of stripping are made meticulous circuit pattern, and extra fine wire is wide can be accomplished below the 10um.Human eye is the grid about this live width 10um of None-identified; Simultaneously this circuit grid has again excellent electric conductivity, and different according to design, its surface resistance is generally less than 1 Ω/, some in addition can reach 0.1 Ω/, this is well below the sheet resistance of tin indium oxide.Therefore can with this grid application in the viewing area, use as transparent conductive material.Especially be fit to be applied to large touch panel.
There is no particular limitation for the shape of this grid, can be that very thin lines are bent to form various circuit patterns, also can be triangle, quadrilateral, pentagon, hexagon ... even circular etc.
Because this conductive material can be simultaneously be used for the laying of electrically conducting transparent circuit and frame conducting wire, so visible area electrically conducting transparent circuit and frame conducting wire complete simultaneously.
Because light blockage coating, exposure that the present invention adopts, then development, etching, this gold-tinted technique of stripping, can process very meticulous circuit pattern, therefore can concentrate on contact panel drive electrode and induction electrode on the same face of transparent base, the passage of drive electrode disconnects with induction electrode passage intersection, should disconnect channel lead to FPC hot pressing Pin placement of foot by thin wire.
The advantages the such as therefore contact panel of made of the present invention has that cost is low, excellent performance, technique are simple.
The manufacturing of a kind of capacitance type touch-control panel of the present invention comprises the steps.
Step 1: simultaneously lay a conductive layer in transparent substrates.This transparent base can be selected the material of glass, PET, PC, PMMA or its excellent in optical properties of optical grade.This conductive material can be the metals such as the lower gold, silver of resistance value, copper, aluminium, considers that the subsequent etch procedure for processing is convenient, and anti-oxidant, the salt fog resistance testing requirements of product after the etching, and this conductive material also can add the metals such as nickel, titanium, molybdenum, palladium.This opaque conductive layer can be laid by modes such as magnetic control sputtering plating, evaporation, plating or coatings.
Step 2: at the described conductive layer surface coating of step 1 photoresistance.This photoresistance can be commercially available photosensitive dry film, also can be liquid photoresistance glue.Can be the positivity photoresistance, also can be the negativity photoresistance.
Step 3: additional mask version exposure.Be painted with circuit pattern on the mask plate, mask plate is attached to the photoresistance surface, then facing to the mask plate exposure, the pattern on the mask plate is just transferred to above the photoresistance, forms latent image.This mask plate can make chromium plate, glass dry plate, film version etc., considers cost and result of use, the preferred glass dry plate.
Step 4: develop.With developer the photoresistance latent image is partly dissolved, makes this place's conductive layer exposed metal/bare metal; The residue photoresistance still keeps, for the protection of the conductive layer metal of below.
Step 5: etching.The conducting metal that the upper step was exposed with etchant etches away, and only stays the conducting metal under the photoresistance protection, thereby has formed the circuit pattern that needs.
Step 6: stripping.With stripper solution photoresistance is peeled off from conductive layer surface.
By above-mentioned steps, just obtained a kind of capacitance type touch-control panel.
Description of drawings
Fig. 1: be the diagrammatic cross-section behind transparency carrier laying conductive layer, the coating photoresistance.
Fig. 2: be the diagrammatic cross-section of this transparency carrier additional mask version, exposure.
Fig. 3: be the diagrammatic cross-section after this transparency carrier development.
Fig. 4: be the diagrammatic cross-section after this transparency carrier etching.
Fig. 5: be the diagrammatic cross-section behind this transparency carrier stripping.
Fig. 6: for the contact panel after machining is overlooked design sketch.
Fig. 7: be this contact panel local line enlarged diagram.
Embodiment
The below is that specific embodiments of the invention further describe.
(1) transparent base 1 is placed in the sputtering coating equipment, in the mode of vacuum magnetic control sputter, forms conductive layer 2 on the surface of transparent base 1.This transparent base is selected the polyethylene terephthalate (being called for short PET) of optical grade, 125 microns of thickness.This conductive material is selected the copper NiTi.Plated film carries out in the mode of reel-to-reel.
(2) conducting surface of the flexible and transparent base material of above-mentioned sputter conductive material is laid photoresistance 3.This photoresistance adopts the liquid photoresistance glue of positivity.Material profile structure behind the coating photoresistance as shown in Figure 1.
(3) (2) described material photoresistance face additional mask version 4, by the exposure, the design transfer on the mask plate above photoresistance.This mask plate adopts the glass dry plate.Material profile state during mask exposure as shown in Figure 2, the parallel rays in 5 whens exposure representative.
(4) (3) described material is carried out development operation, make that the partially conductive material is exposed, the partially conductive material is protected by photoresistance.The cross-section structure of material as shown in Figure 3 after developing.
(5) (4) described material is carried out etching operation.Under 40 degree celsius temperature, use the salt acid etching, remove exposed conductive material copper NiTi.The cross-section structure of material as shown in Figure 4 after the etching.
(6) (5) described material is carried out the stripping operation, remove photoresistance.So just obtained our needed contact panel circuit pattern.Fig. 5 is this product cross-section structure, and wherein VA represents this contact panel window area, and F represents the frame region of this contact panel; A represents viewfinder area refined net conductive pattern; B represents the rim area wire pattern.
(7) Fig. 6 is that this product vertical view, Fig. 7 are this product partial enlarged drawing.Can find out that the circuit pattern in the window area is that the hollow out grid consists of grid live width 9um, sizing grid 300um*300um; Frame region is the solid metal wire.
Though the present invention is described by above-described embodiment, but still can change its form and details, make without departing from the spirit of the present invention.Above-mentioned for the most rational using method of the present invention, only for the present invention can implementation one of mode, but not as limit.Those skilled in the art is understood, and can carry out many changes to it in the spirit and scope that claim of the present invention limits, revise, even equivalence, but all will fall within the scope of protection of the present invention.
Claims (6)
1. capacitance type touch-control panel, it is characterized in that: driving circuit and sensor circuit are positioned at the same face of transparent base.
2. contact panel as claimed in claim 1 is further characterized in that: drive road and sensor circuit and all be comprised of transparent circuitry pattern and the frame wire pattern of viewfinder area.
3. capacitance type touch-control panel, it is characterized in that: transparent circuitry pattern and the frame wire pattern of viewfinder area are what to be produced out simultaneously.
4. contact panel as claimed in claim 3, be further characterized in that: the transparent circuitry pattern of window area is comprised of very thin metal grill.
5. contact panel as claimed in claim 3 is further characterized in that: the transparent circuitry pattern of viewfinder area and frame wire pattern are made by the exposure etch process.
6. contact panel as claimed in claim 3, be further characterized in that: the transparent circuitry pattern of viewfinder area and frame wire pattern are the alloy compositions by the smaller gold, silver of resistance, copper, aluminium or these metals and other metals, consider characteristics, preferably copper and the aldary of exposure etch process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104195847A CN102929462A (en) | 2012-10-29 | 2012-10-29 | Capacitive touch panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104195847A CN102929462A (en) | 2012-10-29 | 2012-10-29 | Capacitive touch panel |
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| CN102929462A true CN102929462A (en) | 2013-02-13 |
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| CN2012104195847A Pending CN102929462A (en) | 2012-10-29 | 2012-10-29 | Capacitive touch panel |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103257746A (en) * | 2013-05-03 | 2013-08-21 | 旭璟光电科技（惠州）有限公司 | Manufacturing method of OGS touch screen |
| CN103279222A (en) * | 2013-05-24 | 2013-09-04 | 苏州欧菲光科技有限公司 | Touch panel and preparation method thereof |
| CN103294276A (en) * | 2013-06-08 | 2013-09-11 | 南昌欧菲光科技有限公司 | Touch screen electrode and manufacturing method thereof |
| CN103425323A (en) * | 2013-03-30 | 2013-12-04 | 南昌欧菲光显示技术有限公司 | Polarizing sheet module, preparation method thereof and touch display screen |
| CN104111754A (en) * | 2014-07-08 | 2014-10-22 | 昆山龙腾光电有限公司 | Touch induction layer forming method and touch display device forming method |
| CN104345941A (en) * | 2013-07-31 | 2015-02-11 | 林志忠 | Touch substrate and manufacturing method thereof |
| CN105278709A (en) * | 2014-05-28 | 2016-01-27 | 介面光电股份有限公司 | Manufacturing method of metal circuit micro-structures |
| CN105334988A (en) * | 2014-07-01 | 2016-02-17 | 长鸿光电(厦门)有限公司 | Touch panel |
| CN105487279A (en) * | 2016-02-18 | 2016-04-13 | 昆山龙腾光电有限公司 | Manufacturing method of touch control display panel |
| CN106445225A (en) * | 2016-08-03 | 2017-02-22 | 深圳市骏达光电股份有限公司 | Touch screen and processing method thereof |
| CN106484160A (en) * | 2015-08-26 | 2017-03-08 | 启耀光电股份有限公司 | Display device, contact panel and its manufacture method |
| CN108776558A (en) * | 2018-08-08 | 2018-11-09 | 意力(广州)电子科技有限公司 | The production method of touch sensing |
| CN108845699A (en) * | 2018-06-27 | 2018-11-20 | 广州视源电子科技股份有限公司 | The production method of the manufacture craft and touch screen of sense film |
| CN108845717A (en) * | 2018-06-27 | 2018-11-20 | 广州视源电子科技股份有限公司 | The production method of the manufacturing process and touch screen of sense film |
| CN109240540A (en) * | 2018-09-07 | 2019-01-18 | 深圳市骏达光电股份有限公司 | The manufacturing process of touch module device |
| CN109659095A (en) * | 2018-12-13 | 2019-04-19 | 江西蓝沛泰和新材料有限公司 | A kind of preparation method of transparent conductive film |
| CN109696990A (en) * | 2018-11-16 | 2019-04-30 | 信利光电股份有限公司 | A kind of the melanism method and metal grill touch screen of metal grill touch screen |
| CN110942723A (en) * | 2019-11-29 | 2020-03-31 | 武汉华星光电技术有限公司 | Display device and manufacturing method thereof |
| CN111627595A (en) * | 2019-02-28 | 2020-09-04 | 昆山工研院新型平板显示技术中心有限公司 | Lead, preparation method of lead and flexible display device |
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Cited By (28)
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| CN103425323B (en) * | 2013-03-30 | 2016-08-31 | 南昌欧菲光显示技术有限公司 | Polaroid module and preparation method thereof and touch display screen |
| CN103425323A (en) * | 2013-03-30 | 2013-12-04 | 南昌欧菲光显示技术有限公司 | Polarizing sheet module, preparation method thereof and touch display screen |
| CN103257746B (en) * | 2013-05-03 | 2015-09-09 | 旭璟光电科技（惠州）有限公司 | A kind of OGS touch screen method for making |
| CN103257746A (en) * | 2013-05-03 | 2013-08-21 | 旭璟光电科技（惠州）有限公司 | Manufacturing method of OGS touch screen |
| CN103279222A (en) * | 2013-05-24 | 2013-09-04 | 苏州欧菲光科技有限公司 | Touch panel and preparation method thereof |
| CN103279222B (en) * | 2013-05-24 | 2017-03-22 | 苏州欧菲光科技有限公司 | Touch panel and preparation method thereof |
| CN103294276A (en) * | 2013-06-08 | 2013-09-11 | 南昌欧菲光科技有限公司 | Touch screen electrode and manufacturing method thereof |
| CN104345941B (en) * | 2013-07-31 | 2018-05-18 | 林志忠 | Touch base plate and its manufacturing method |
| CN104345941A (en) * | 2013-07-31 | 2015-02-11 | 林志忠 | Touch substrate and manufacturing method thereof |
| CN105278709A (en) * | 2014-05-28 | 2016-01-27 | 介面光电股份有限公司 | Manufacturing method of metal circuit micro-structures |
| CN105334988A (en) * | 2014-07-01 | 2016-02-17 | 长鸿光电(厦门)有限公司 | Touch panel |
| CN104111754B (en) * | 2014-07-08 | 2017-02-15 | 昆山龙腾光电有限公司 | Touch induction layer forming method and touch display device forming method |
| CN104111754A (en) * | 2014-07-08 | 2014-10-22 | 昆山龙腾光电有限公司 | Touch induction layer forming method and touch display device forming method |
| CN106484160A (en) * | 2015-08-26 | 2017-03-08 | 启耀光电股份有限公司 | Display device, contact panel and its manufacture method |
| CN105487279A (en) * | 2016-02-18 | 2016-04-13 | 昆山龙腾光电有限公司 | Manufacturing method of touch control display panel |
| CN105487279B (en) * | 2016-02-18 | 2018-12-18 | 昆山龙腾光电有限公司 | The manufacturing method of touch-control display panel |
| CN106445225A (en) * | 2016-08-03 | 2017-02-22 | 深圳市骏达光电股份有限公司 | Touch screen and processing method thereof |
| CN108845717A (en) * | 2018-06-27 | 2018-11-20 | 广州视源电子科技股份有限公司 | The production method of the manufacturing process and touch screen of sense film |
| CN108845699A (en) * | 2018-06-27 | 2018-11-20 | 广州视源电子科技股份有限公司 | The production method of the manufacture craft and touch screen of sense film |
| CN108845717B (en) * | 2018-06-27 | 2021-04-02 | 广州视源电子科技股份有限公司 | Manufacturing process of induction film and manufacturing method of touch screen |
| CN108776558A (en) * | 2018-08-08 | 2018-11-09 | 意力(广州)电子科技有限公司 | The production method of touch sensing |
| CN109240540A (en) * | 2018-09-07 | 2019-01-18 | 深圳市骏达光电股份有限公司 | The manufacturing process of touch module device |
| CN109240540B (en) * | 2018-09-07 | 2022-04-26 | 深圳市骏达光电股份有限公司 | Manufacturing process of touch module device |
| CN109696990A (en) * | 2018-11-16 | 2019-04-30 | 信利光电股份有限公司 | A kind of the melanism method and metal grill touch screen of metal grill touch screen |
| CN109659095A (en) * | 2018-12-13 | 2019-04-19 | 江西蓝沛泰和新材料有限公司 | A kind of preparation method of transparent conductive film |
| CN111627595A (en) * | 2019-02-28 | 2020-09-04 | 昆山工研院新型平板显示技术中心有限公司 | Lead, preparation method of lead and flexible display device |
| CN111627595B (en) * | 2019-02-28 | 2022-02-22 | 昆山工研院新型平板显示技术中心有限公司 | Lead, preparation method of lead and flexible display device |
| CN110942723A (en) * | 2019-11-29 | 2020-03-31 | 武汉华星光电技术有限公司 | Display device and manufacturing method thereof |
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Application publication date: 20130213 |