CN101728009A - Conductive film for touch screen, photosensitive material for forming conductive film, conductive material and conductive film thereof - Google Patents
Conductive film for touch screen, photosensitive material for forming conductive film, conductive material and conductive film thereof Download PDFInfo
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- CN101728009A CN101728009A CN200910208115A CN200910208115A CN101728009A CN 101728009 A CN101728009 A CN 101728009A CN 200910208115 A CN200910208115 A CN 200910208115A CN 200910208115 A CN200910208115 A CN 200910208115A CN 101728009 A CN101728009 A CN 101728009A
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- layer
- electrically conductive
- touch screen
- adhesive
- silver salt
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
- H01B5/14—Non-insulated conductors or conductive bodies characterised by their form comprising conductive layers or films on insulating-supports
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/08—Oxides
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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
- G06F3/045—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/20—Conductive material dispersed in non-conductive organic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0026—Apparatus for manufacturing conducting or semi-conducting layers, e.g. deposition of metal
Abstract
The present invention provides a conductive film for touch screen, which has the advantages of excellent conductivity, sufficiently reduced ripple and excellent characteristic of the touch screen. The conductive film (10) for touch screen according to the invention is provided with a conductive layer (14) which is formed through exposing and developing a silver salt emulsion layer (16) on a supporter (12) and contains silver, wherein, the silver coating amount of the silver salt emulsion layer (16) is 1.5-3.1g/m2. The conductive layer (14) forms a grid pattern (18) with a space of 600-800 mu m, and furthermore the surface resistance of the conductive layer is 200-800 omega/sq.
Description
Technical field
The present invention relates to conducting film, more specifically, relate to the conductive film for touch screen, the conducting film that are equipped on touch-screen and form with photosensitive material, conductive material and conducting film.
Background technology
In recent years, studied the conductive film (for example with reference to TOHKEMY 2000-13088 communique, Japanese kokai publication hei 10-340629 communique, Japanese kokai publication hei 10-41682 communique, Japanese Patent Publication 42-23746 communique, TOHKEMY 2006-228649 communique) that utilizes various manufacture methods to obtain.Wherein, as conductive film, the conductive film that the silver salt mode of making is by the following method arranged: coating silver halide emulsion layer, this silver halide emulsion layer is carried out pattern exposure, make its formation have the conductive part and the pattern form (for example with reference to TOHKEMY 2004-221564 communique, TOHKEMY 2004-221565 communique, TOHKEMY 2007-95408 communique, TOHKEMY 2006-228469 communique, TOHKEMY 2006-332459 communique, TOHKEMY 2008-244067 communique) that is used to guarantee transparent peristome of the silver of conductivity.The conductive film of this silver salt mode is a purpose with the purposes of shielding electromagnetic wave, and requiring usually is the low conductive film of sheet resistance, in addition, reduces sheet resistance by means such as platings.
On the other hand, people study the various uses of conductive film, and the present inventor has been conceived to as the application start of touch-screen usefulness electrode research.
Summary of the invention
The object of the present invention is to provide that the good electrical conductivity, the ripple that have as conductive film for touch screen fully reduce, the conductive film for touch screen of touch-screen excellent, conducting film form with photosensitive material, conductive material and conducting film.
The present inventor concentrates on studies, and found that: by spacing in the silver coating amount of regulating the silver salt emulsion layer, can solve above-mentioned problem, thereby finish the present invention.
That is, can solve above-mentioned problem by following invention.
[1] the 1st invention of the present invention relates to a kind of conductive film for touch screen, and it has on supporter by the conductive layer that contains silver that silver salt emulsion layer exposure imaging formed, and it is characterized in that the silver coating amount of above-mentioned silver salt emulsion layer is 1.5～3.1g/m
2, it is the lattice of 600 μ m～800 μ m that above-mentioned conductive layer forms spacing, and sheet resistance is 200～800 Ω/sq..
[2] according to the 1st invention, it is characterized in that the volume ratio of the silver/adhesive of above-mentioned silver salt emulsion layer is more than 1/4.
[3] according to the 1st invention, it is characterized in that the volume ratio of the silver/adhesive of above-mentioned silver salt emulsion layer is 1/2～1/0.7.
[4] according to the 1st invention, it is characterized in that the live width of above-mentioned conductive layer is 5～10 μ m.
[5] according to the 1st invention, it is characterized in that also possessing transparency conducting layer, above-mentioned transparency conducting layer contains electrically conductive microparticle and adhesive, and the mass ratio of above-mentioned electrically conductive microparticle and adhesive (electrically conductive microparticle/adhesive) is 1/3～2/1.
[6] the 2nd invention of the present invention relates to a kind of conducting film and forms and use photosensitive material, and it has the silver salt emulsion layer, it is characterized in that, the silver coating amount of above-mentioned silver salt emulsion layer is 1.5～3.1g/m
2, it also possesses transparency conducting layer, and above-mentioned transparency conducting layer contains electrically conductive microparticle and adhesive, and the mass ratio of above-mentioned electrically conductive microparticle and adhesive (electrically conductive microparticle/adhesive) is 1/3～2/1.
[7] according to the 2nd invention, it is characterized in that above-mentioned silver salt emulsion layer contains above-mentioned electrically conductive microparticle, and be also used as above-mentioned transparency conducting layer that the content of above-mentioned electrically conductive microparticle is 0.15～0.5g/m
2
[8] according to the 2nd invention, it is characterized in that above-mentioned transparency conducting layer is positioned at the upper layer side of above-mentioned silver salt emulsion layer, the content of the above-mentioned electrically conductive microparticle of above-mentioned transparency conducting layer is 0.2～0.4g/m
2
[9] according to the 2nd invention, it is characterized in that above-mentioned transparency conducting layer is positioned at the lower layer side of above-mentioned silver salt emulsion layer, the content of the above-mentioned electrically conductive microparticle of above-mentioned transparency conducting layer is 0.15～0.5g/m
2
[10] according to the 2nd invention, it is characterized in that when above-mentioned electrically conductive microparticle when being spherical, average grain diameter is 0.085～0.12 μ m, when above-mentioned electrically conductive microparticle was needle-like, the average axial length of major axis was that the average axial length of 0.2～20 μ m, minor axis is 0.01～0.02 μ m.
[11] the 3rd invention of the present invention relates to a kind of conductive material, it is characterized in that, its be by will be above-mentioned the conducting film formation that relates to of the 2nd invention with photosensitive material carry out pattern exposure, development treatment obtains.
[12] the 4th invention of the present invention relates to a kind of conducting film, it is characterized in that, it has conductive layer on supporter, wherein, layer beyond above-mentioned conductive layer or the above-mentioned conductive layer contains electrically conductive microparticle and adhesive, and the mass ratio of above-mentioned electrically conductive microparticle and adhesive (electrically conductive microparticle/adhesive) is 1/3～2/1.
As mentioned above, conductive film for touch screen of the present invention has the good electrical conductivity as conductive film for touch screen, and ripple fully reduces, the touch-screen excellent.Conductive film for touch screen of the present invention is because the sheet resistance of conductive layer is 1000～2500 Ω/sq., so the characteristics of signals excellence of touch-screen (particularly electrostatic capacity type), and noise fully reduces.In addition, be below the 1400 μ m by the spacing that makes lattice, it is not eye-catching that the lattice of conductive layer becomes, and outward appearance is good.Therefore, writings and image by screen displaying etc. is clear and easy to see, the observability excellence.In addition, conductive film for touch screen of the present invention is owing to import the cathetus excellence at the pen of precision prescribed, therefore the deviation of sheet resistance fully reduces, and can need not the excessive setting of touch-screen side, for example be used for the excessive setting of revisal linearity or resistance deviation.
In addition, conducting film of the present invention forms and can make the conductive film for touch screen with above-mentioned effect with photosensitive material, electric conducting material and conducting film.
Description of drawings
Fig. 1 is the local sectional view of elliptically representing the conductive film for touch screen of present embodiment.
Fig. 2 is the vertical view of an example (straight line grid pattern) of the lattice of expression conductive layer.
Fig. 3 is the vertical view of another example (wave grid pattern) of the lattice of expression conductive layer.
Embodiment
Below, the example of the execution mode when for example being used for touch-screen to conductive film for touch screen of the present invention, conducting film are formed with photosensitive material, electric conducting material and conducting film with reference to Fig. 1～Fig. 3 describes.
As shown in Figure 1, the conductive film for touch screen 10 of present embodiment has 2 layers of conductive layer 14 that contain silver on supporter 12.2 layers of 14 of conductive layers are stacked opposite to each other across gap 23.These conductive layers 14 are by forming silver salt emulsion layer 16 exposure imaging, and the silver coating amount of silver salt emulsion layer 16 is 1.5～3.1g/m
2
In addition, as shown in Figure 2, it is the lattice 18 of 600 μ m～800 μ m that conductive layer 14 forms spacing Pa, and its sheet resistance is 200～800 Ω/sq..Conductive layer 14 is to comprise the layer that forms latticed current-carrying part 20 and peristome in addition 22.In addition, transparency conducting layer is set on conductive film for touch screen 10 sometimes, even but in this case the sheet resistance of transparency conducting layer also the sheet resistance than conductive layer 14 is big, so the sheet resistance of conductive layer 14 becomes the sheet resistance of conductive film for touch screen 10.
The conductive film for touch screen 10 of such present embodiment can obtain by the lattice 18 that specific photosensitive silve halide material described in detail below is an exposure imaging given shape on the silver salt emulsion layer 16.
In addition, can between supporter 12 and conductive layer 14, insert not shown transparency conducting layer, also can between the superficial layer of conductive layer 14 and touch-screen, insert transparency conducting layer.
Below, the formation of each layer of the conductive film for touch screen 10 of present embodiment is elaborated.
[supporter 12]
As the supporter 12 that uses in the conductive film for touch screen 10 of present embodiment, can enumerate plastic film, plastic plate, glass plate etc.
As the raw material of above-mentioned plastic film and plastic plate, for example can use PETG (PET), PEN polyesters such as (PEN); TPO such as polyethylene (PE), polypropylene (PP), polystyrene, EVA; Vinyl-based resin; And Merlon (PC), polyamide, polyimides, acrylic resin, tri acetyl cellulose (TAC) etc.
As supporter 12, preferred PET (fusing point is 258 ℃), PEN (fusing point is 269 ℃), PE (fusing point is 135 ℃), PP (fusing point is 163 ℃), polystyrene (fusing point is 230 ℃), polyvinyl chloride (fusing point is 180 ℃), Vingon (fusing point is 212 ℃) or TAC fusing points such as (fusing point are 290 ℃) are about plastic film or plastic plate below 290 ℃, particularly from viewpoints such as light transmission and processabilities, preferred PET.Because conductive film for touch screen 10 such transparent and electrically conductive films require the transparency, the transparency height of therefore preferred supporter 12.
[silver salt emulsion layer 16]
Become the silver salt emulsion layer 16 of the conductive layer 14 of conductive film for touch screen 10, except that containing silver salt and adhesive, also contain additives such as solvent and dyestuff.
As the silver salt that uses in the present embodiment, can enumerate organic silver salts such as inorganic silver salt such as silver halide and silver acetate.In the present embodiment, the preferred silver halide that uses as the excellent of optical sensor.
It is 1.5～3.1g/m that the silver coating amount of silver salt emulsion layer 16 (coating weight of silver salt) is converted into silver
2When this silver coating amount does not satisfy above-mentioned scope, can not obtain desirable sheet resistance when making conductive film for touch screen 10.
As the adhesive that uses in the present embodiment, can enumerate for example polysaccharide, cellulose and derivatives thereof such as gelatin, polyvinyl alcohol (PVA), PVP (PVP), starch, poly(ethylene oxide), polyvinylamine, shitosan, polylysine, polyacrylic acid, poly-alginic acid, poly-hyaluronic acid, carboxycellulose etc.They have the character of neutrality, anionic property, cationic according to the ionic difference of functional group.
The content of the adhesive that contains in the silver salt emulsion layer 16 of present embodiment does not have particular determination, can suitably decision in can bringing into play dispersed and adhering scope.The content of the adhesive in the silver salt emulsion layer 16 by Ag/ adhesive volume ratio, is preferably more than 1/4, more preferably more than 1/2.Ag/ adhesive volume ratio is preferably below 100/1, more preferably below 50/1.In addition, Ag/ adhesive volume ratio more preferably 1/2～2/1.Most preferably be 1/2～0.7/1.By making Ag/ adhesive volume ratio in the silver salt emulsion layer 16 in this scope,, obtain having the conductive film for touch screen 10 of uniform surface resistance even under the situation of having regulated the silver coating amount, also can suppress the deviation of resistance value.
＜solvent 〉
The solvent that uses in the formation of silver salt emulsion layer 16 does not have particular determination, can enumerate for example water, organic solvent (for example ester class, ethers etc. such as sulfoxide class, ethyl acetate such as amide-types such as ketones such as alcohols, acetone, formamide, methyl-sulfoxide such as methyl alcohol), ionic liquid and their mixed solvent.
The content of the solvent that uses in the silver salt emulsion layer 16 of present embodiment with respect to the gross mass of the silver salt that contains in the silver salt emulsion layer 16, adhesive etc., is the scope of 30～90 quality %, is preferably the scope of 50～80 quality %.
＜other additives 〉
Various additives about using in the present embodiment do not have particular restriction, can preferably use known additive.
[other layer constitutes]
On silver salt emulsion layer 16, not shown protective layer can be set.In the present embodiment, " protective layer " is meant the layer that is formed by adhesives such as gelatin or high molecular polymers, to prevent to abrade and improves the effect of mechanical characteristic and be formed at and have on the photosensitive silver salt emulsion layer 16 in order to bring into play.Its thickness is preferably below the 0.2 μ m.The coating process of protective layer and formation method do not have particular determination, can suitably select known coating process and formation method.
In addition, below silver salt emulsion layer 16, for example priming coat can also be set.
[electric conductive polymer layer, electrically conductive microparticle layer]
The conductive film for touch screen 10 of present embodiment can also further have electric conductive polymer layer that contains electric conductive polymers such as PEDOT or the electrically conductive microparticle layer that contains electrically conductive microparticle.This electric conductive polymer layer or electrically conductive microparticle layer are that conductivity is 1.0 * 10
7Low, the high-resistance transparency conducting layer of conductivity that Ω/sq. is above.By this high-resistance transparency conducting layer is set, after having formed conductive film for touch screen 10, can make the interior deviation of face of sheet resistance even, the linearity during the pen input improves.This high-resistance transparency conducting layer, after making conductive film for touch screen 10, as long as be positioned at the position that conducts with conductive layer 14, for example high-resistance transparency conducting layer preferably forms in abutting connection with ground with silver salt emulsion layer 16 (conductive layer 14) during fabrication.
The electrically conductive microparticle layer by make silver salt emulsion layer 16 self or and silver salt emulsion layer 16 adjoining position on the layer that forms or between layer between silver salt emulsion layer 16 and the superficial layer or superficial layer self or the layer between supporter 12 and silver salt emulsion layer 16 contains electrically conductive microparticle and adhesive forms.The mass ratio of electrically conductive microparticle and adhesive (electrically conductive microparticle/adhesive) is preferably 1/3～2/1, and more preferably 1/3～1/1.When making silver salt emulsion layer 16 self contain electrically conductive microparticle and adhesive, formed the electrically conductive microparticle layer at the peristome 22 of the lattice 18 of conductive layer 14.That is, the peristome 22 of lattice 18 works as the transmittance section that is dispersed with electrically conductive microparticle.
When the position beyond silver salt emulsion layer 16 forms the electrically conductive microparticle layer, the electrically conductive microparticle layer be preferably formed in silver salt emulsion layer 16 adjoining position, also be preferably formed between silver salt emulsion layer 16 and supporter 12.In addition, when the electrically conductive microparticle layer is between silver salt emulsion layer 16 and superficial layer, or when being superficial layer self, in the manufacturing process of conductive film for touch screen 10, electrically conductive microparticle reacts, and might cause the transparency of conductive film for touch screen 10 to reduce.
＜electrically conductive microparticle and adhesive 〉
About electrically conductive microparticle, can enumerate SnO
2, ZnO, TiO
2, Al
2O
3, In
2O
3, MgO, BaO and MoO
3On the particle that further contains the metal oxide of xenogenesis atom in metal oxide and they composite oxides (oxide that contains metal ion more than 2 kinds) and these metal oxides.As metal oxide, preferred SnO
2, ZnO, TiO
2, Al
2O
3, In
2O
3, MgO, preferred especially SnO
2
Shape to the electrically conductive microparticle that uses in the present embodiment does not have particular restriction, can enumerate granular, needle-like etc.In addition, about its size, during spheroidal particle, preferred average grain diameter is 0.085～0.12 μ m.During needle-like, the average axial length of preferred major axis is that the average axial length of 0.2～20 μ m, minor axis is 0.01～0.02 μ m.
Make when containing electrically conductive microparticle and adhesive in the silver salt emulsion layer 16, the coating weight of electrically conductive microparticle is preferably 0.15～0.5g/m
2When the electrically conductive microparticle layer was positioned at the upper layer side of silver salt emulsion layer 16, the coating weight of electrically conductive microparticle was preferably 0.2～0.4g/m
2When the electrically conductive microparticle layer was positioned at the lower layer side of silver salt emulsion layer 16, the coating weight of electrically conductive microparticle was preferably 0.15～0.5g/m
2
For electrically conductive microparticle and supporter 12 are adhered to, additivity ground uses adhesive in the electrically conductive microparticle layer.As such adhesive, preferably use water-soluble polymer.
As above-mentioned adhesive, can enumerate for example polysaccharide, cellulose and derivatives thereof such as gelatin, carrageenan, polyvinyl alcohol (PVA), PVP (PVP), starch, poly(ethylene oxide), polysaccharide, polyvinylamine, shitosan, polylysine, polyacrylic acid, poly-alginic acid, poly-hyaluronic acid, carboxycellulose, Arabic gum, mosanom etc.They have the character of neutrality, anionic property, cationic because of the ionic difference of functional group.
In addition, as gelatin, delime is handled outside the gelatin, can also adopt the acid treatment gelatin, can use the gelatin (phthaloyl gelatin, acetylation gelatin) of the enzyme catabolite of hydrolysate, gelatin of gelatin and amino, carboxyl modified.
[conductive film for touch screen 10]
The conductive film for touch screen 10 of present embodiment be carry out the waffle-like pattern exposure by being formed at silver salt emulsion layer 16 on the supporter 12, development treatment obtains.
In the present embodiment, lattice 18 by pattern exposure, development treatment formation, as shown in Figure 2 latticed arranged and be the straight line grid pattern of straight line nearly orthogonal form, also have the current-carrying part 20 of 24 of cross parts as shown in Figure 3 to have the wave grid pattern etc. of at least 1 bending.In the present embodiment, the spacing Pa (total of the width W b of the live width Wa of current-carrying part 20 and peristome 22) of the lattice 18 of preferred conductive layer 14 is 600 μ m～800 μ m.
In addition, in the present embodiment,, can further form high-resistance transparency conducting layer by on conductive layer 14, further being coated with electric conductive polymer.
[exposure]
Silver salt emulsion layer 16 is carried out the method for pattern exposure, can expose by the face that has utilized photomask and carry out, also can be undertaken by the scan exposure that utilizes laser beam.At this moment, can be the refraction type exposure of having adopted lens, also can be the reflective exposure of having adopted speculum, can adopt Exposure modes such as contact exposure, close induction type exposure, reduced projection exposure, reflective projection exposure.
[development treatment]
As mentioned above, silver salt emulsion layer 16 is further implemented development treatment by behind the pattern exposure.Development treatment can adopt in silver salt photographic, photographic paper, halftone screen film, photomask with development treatment technology commonly used in the emulsion mask etc.
In the present embodiment, by carrying out above-mentioned pattern exposure and development treatment, the current-carrying part 20 (metallic silver portion) at exposed portion formation lattice shape forms peristome 22 (transmittance section) at unexposed simultaneously.
To the development treatment of silver salt emulsion layer 16, can comprise with the silver salt and the stable photographic fixing that turns to purpose and carry out of realization of removing unexposed portion and handle.The photographic fixing of silver salt emulsion layer 16 handled to adopt at silver salt photographic, photographic paper, halftone screen film, photomask photographic fixing treatment technology with use in the emulsion mask etc.
The conductive layer 14 of the conductive film for touch screen 10 of the present embodiment that so obtains, when electrically conductive microparticle enters silver salt emulsion layer 16, electrically conductive microparticle is distributed to the peristome 22 (transmittance section) that does not have silver salt, forms the transparency conducting layer that resistance is higher than current-carrying part 20 (metallic silver portion).
In addition, when the position beyond silver salt emulsion layer 16 formed the electrically conductive microparticle layer, the part corresponding with the peristome 22 of conductive layer 14 in the electrically conductive microparticle layer with above-mentioned same, worked as the transmittance section that is dispersed with electrically conductive microparticle.
In addition, in the manufacture method of the conductive film for touch screen 10 of present embodiment, need not operations such as plating.This is because in the manufacture method of the conductive film for touch screen 10 of present embodiment, by regulating silver coating amount, the silver/adhesive ratio of silver salt emulsion layer 16, can access desirable sheet resistance.In addition, as required, can also carry out calendering processing etc.
(dura mater after the development treatment is handled)
After silver salt emulsion layer 16 carried out development treatment, preferably be impregnated into and carry out dura mater in the hard coat agent and handle.As hard coat agent, can enumerate for example glutaraldehyde, hexandial, 2,3-dihydroxy-1, the compound of record in Japanese kokai publication hei 2-141279 number such as twain-aldehyde compound such as 4-diox and boric acid.
The silver salt emulsion layer 16 of above-mentioned present embodiment and conductive material can use with the open communique of record in following table 1 and the table 2 and the technology appropriate combination of international open brochure.Wherein, statements such as " spy opens ", " number communique ", " number brochure " have been omitted.
[table 1]
| 2004-221564 2007-235115 2006-332459 2007-102200 2006-228478 2006-348351 2007-134439 2007-310091 2005-302508 2008-267814 2008-283029 2009-4213 2008-147507 2008-218096 2008-241987 | 2004-221565 2007-207987 2009-21153 2006-228473 2006-228836 2007-270321 2007-149760 2007-116137 2008-218784 2008-270405 2008-288305 2009-10001 2008-159770 2008-218264 2008-251274 | 2007-200922 2006-012935 2007-226215 2006-269795 2007-009326 2007-270322 2007-208133 2007-088219 2008-227350 2008-277675 2008-288419 2009-16526 2008-159771 2008-224916 2008-251275 | 2006-352073 2006-010795 2006-261315 2006-269795 2006-336090 2007-201378 2007-178915 2007-207883 2008-227351 2008-277676 2008-300720 2009-21334 2008-171568 2008-235224 2008-252046 | 2007-129205 2006-228469 2007-072171 2006-324203 2006-336099 2007-335729 2007-334325 2007-013130 2008-244067 2008-282840 2008-300721 2009-26933 2008-198388 2008-235467 2008-277428 |
[table 2]
| 2006/001461 2006/098335 | 2006/088059 2006/098334 | 2006/098333 2007/001008 | 2006/098336 | 2006/098338 |
[priming coat]
In order to prevent that conductive layer 14 from peeling off from supporter 12, preferably on supporter 12, priming coat is set.As the material of priming coat, can use acrylate copolymer, Vingon, styrene butadiene rubbers, polyester etc.The thickness of priming coat is preferably 0.05～0.5 μ m.
＜touch-screen 〉
The conductive film for touch screen 10 of present embodiment for example is applicable to the touch-screen of resistance membrane type.
About the touch-screen of resistance membrane type, when the surface of finger tip touching touch-screen, contact is flow through electric current between the conductive layer 14 of this part between 2 layers of conductive layer 14, detects the voltage that produces between 2 layers of conductive layer 14, can try to achieve the coordinate of finger tip.
The conductive film for touch screen 10 of present embodiment particularly, because sheet resistance is 200～800 Ω/sq., so the characteristics of signals excellence of resistive touch panel, can reduce noise fully, thus, can realize the position probing that precision height and response speed are fast.
In addition, because the spacing Pa of the lattice 18 of conductive layer 14 is more than the 600 μ m, therefore can reduce ripple fully, and because spacing Pa is below the 800 μ m, so the lattice 18 of conductive layer 14 becomes not eye-catching, outward appearance is good.Therefore, can provide the touch-screen that writings and image by screen displaying etc. becomes clear and easy to see, observability is good.
In addition, owing to be formed with transparency conducting layers such as electrically conductive microparticle layer or electric conductive polymer layer at the peristome 22 of conductive layer 14 or on the position beyond the conductive layer 14, thereby can make conductive film for touch screen 10 conductivity be arranged at whole mask, the coordinate that can verily follow the pen input detects, the linearity in the time of for example can improving the pen input.
In addition, owing on supporter 12, form priming coat, and after silver salt emulsion layer 16 carried out development treatment, be impregnated into and carry out the dura mater processing in the hard coat agent, therefore the sliding of touch-screen improves, even particularly pen slides near terminal, conductive layer broken string etc. can not appear, the phenomenon that can avoid local surfaces resistance to raise yet.
＜embodiment 〉
Below, describe the present invention in detail according to embodiment, but the invention is not restricted to these embodiment.
[embodiment 1]: with reference to table 3
(preparation of emulsion A)
1 liquid:
Water 750ml
Gelatin (phthaloyl processing gelatin) 8g
Sodium chloride 3g
1, and 3-methylimidazole alkane-2-thioketones (1,3-Dimethylimidazolidine-2-thione)
20mg
Sodium benzenethiosulfonate 10mg
Citric acid 0.7g
2 liquid
Water 300ml
Silver nitrate 150g
3 liquid
Water 300ml
Sodium chloride 38g
KBr 32g
The sour potassium of chlordene iridium (III)
(0.005%KCl 20% aqueous solution) 5ml
Chlordene rhodium acid ammonium
(0.001%NaCl 20% aqueous solution) 7ml
Sour potassium of chlordene iridium (III) (0.005%KCl 20% aqueous solution) that uses in 3 liquid and chlordene rhodium acid ammonium (0.001%NaCl 20% aqueous solution) are prepared by the following method: complex compound powder is separately dissolved in KCl 20% aqueous solution, NaCl 20% aqueous solution respectively, heated 120 minutes down at 40 ℃.
To remaining in 38 ℃, pH is in 4.5 1 liquid, while stirring with 90% the amount of respectively being equivalent to that added 2 liquid and 3 liquid in 20 minutes, forms the nuclear particle of 0.16 μ m.Then, with adding following 4 liquid, 5 liquid in 8 minutes, with remaining 10% amount of 2 minutes adding 2 liquid and 3 liquid, make nuclear particle grow to 0.21 μ m then.Then, add KI 0.15g, slaking 5 minutes finishes particle and forms.
4 liquid
Water 100ml
Silver nitrate 50g
5 liquid
Water 100ml
Sodium chloride 13g
KBr 11g
Potassium ferrocyanide 5mg
Then, according to conventional methods, adopt flocculence to wash.Particularly, cool the temperature to 35 ℃, pH is descended until silver halide precipitation (pH is 3.6 ± 0.2 scope) occurring with sulfuric acid.
Then, remove about 3L supernatant (first washing).Then, behind the adding 3L distilled water, add sulfuric acid until silver halide precipitation occurring.Remove 3L supernatant (second washing) once more.Repeat 1 time and second again and wash identical operations (the 3rd washing), finish washing, desalination operation.
Washing, emulsion after the desalination is adjusted to pH is 6.4, pAg is 7.5, add sodium benzenethiosulfonate 10mg, benzene sulfo-sulfinic acid sodium 3mg, sodium thiosulfate 15mg and chlorination auric acid 10mg, implement chemical sensitization down to obtain the suitableeest sensitivity at 55 ℃, adding is as 1 of stabilizer, 3,3a, 7-purine 100mg, as the Proxel (trade name of anticorrisive agent, ICI Co., the Ltd. system) 100mg.The average grain diameter that finally obtains containing 70 moles of % silver chlorates, 0.08 mole of % silver iodide is that 0.22 μ m, coefficient of variation are 9% iodine chlorine Silver Bromide Cubic grain emulsion.Finally as emulsion, pH=6.4, pAg=7.5, conductivity=40 μ S/m, density=1.2 * 10
3Kg/m
3, viscosity=60mPas.
(preparation of coating fluid)
In above-mentioned emulsion A, add sensitizing coloring matter (SD-1 :) 5.7 * 10 with reference to following chemical formula
-4Mol/molAg implements beam split sensitizing.Add KBr 3.4 * 10 then
-4Mol/molAg, compound (Cpd-3 :) 8.0 * 10 with reference to following chemical formula
-4Mol/molAg fully mixes.
Then, add 1,3,3a, the 7-purine 1.2 * 10
-4Mol/molAg, hydroquinones 1.2 * 10
-2Mol/molAg, citric acid 3.0 * 10
-4Mol/molAg, 2,4-two chloro-6-hydroxyls-1,3,5-triazines sodium salt 90mg/m
2, be that the particle diameter of 15wt% is cataloid, water based emulsion (aqL-6: with reference to the following chemical formula) 50mg/m of 10 μ m with respect to gelatin
2, polyethyl acrylate latex 100mg/m
2, methyl acrylate and 2-acrylamide-2-methyl propane sulfonic acid sodium salt and methacrylic acid (2-acetoxyl group ethyl) ester latex copolymer (mass ratio is 88: 5: 7) 100mg/m
2, hud typed latex { nuclear: styrene/butadiene copolymers (mass ratio is 37/63), shell: styrene/acrylic (2-acetoxyl group ethyl) ester (mass ratio is 84/16, nuclear/shell than be=50/50) } 100mg/m
2, be the compound (Cpd-7: with reference to following chemical formula) of 4wt% with respect to gelatin, with citric acid the pH of coating fluid is transferred to 5.6.
(priming coat)
Following operation is provided with priming coat and (as supporter, adopts PETG (PET) (thickness is 100 μ m) on supporter.PET adopts and has carried out the PET that surface hydrophilic is handled in advance).As the priming coat of the silver halide emulsion layer that forms according to following explanation, be 0.195g/m according to gelatin
2Mode be provided with.This priming coat also double as is a transparency conducting layer.
1 liquid
Water 410ml
Gelatin 11.4g
Sb doped stannum oxide (the former industry corporate system of stone, trade name SN100P) 19.5g
Can add known surfactant etc. in the camera technique in the priming coat.
(silver halide emulsion layer)
The emulsion A and the emulsion layer coating fluid of preparation are as stated above used in coating on above-mentioned priming coat, and to make Ag be 1.5g/m
2, gelatin is 0.21g/m
2That is be that the mode of 1/1.1 (volume ratio) is coated with, according to the ratio of Ag and gelatin (adhesive).
(protective layer)
Protective layer is set on silver halide emulsion layer.
1 liquid:
Water 985ml
Gelatin 15g
In addition, suitably add known surfactant in the camera technique, anticorrisive agent, pH conditioning agent.
After the coated articles drying that so obtains, as sample A.Going up according to electrically conductive microparticle at transparency conducting layer (priming coat) is 0.3354g/m
2, electrically conductive microparticle/adhesive ratio is that the mode of 1.71/1 (mass ratio) is coated with electrically conductive microparticle.In addition, in order to analyze the independent resistance of electrically conductive microparticle (sheet resistance of peristome), with this sample A do not expose, development treatment and only carry out photographic fixing and handle, measure the sheet resistance that does not have silver halide, the result is 1.5 * 10
9Ω/sq..
(exposure, development treatment)
Then, sample A to above-mentioned preparation, by the cancellate photomask that is spaced apart that can form the μ m/8 μ m (spacing is 700 μ m) of the cancellate photomask live width of the developed silver picture of μ m/692 μ m of live width/at interval=8/at interval=692, and be that the directional light of light source exposes in order to high-pressure mercury lamp, use following developing liquid developing, use then fixing solution (trade name: CN16X N3X-R: Fuji Photo Film Co., Ltd.'s system) carry out development treatment after, use pure water drip washing, obtain the conductive film for touch screen of embodiment 1.
[composition of developer solution]
In the 1L developer solution, contain following compound.
Hydroquinones 0.037mol/L
N-methylamino phenol 0.016mol/L
Kodalk 0.140mol/L
NaOH 0.360mol/L
Sodium bromide 0.031mol/L
Potassium metabisulfite 0.187mol/L
[dura mater after the development is handled]
After the development, in glutaraldehyde water solution, flood, carry out dura mater and handle.
[embodiment 2]: with reference to table 3
Making Ag is 1.7g/m
2Be coated with the coating fluid of silver halide emulsion layer, all operate similarly to Example 1 in addition, obtain the conductive film for touch screen of embodiment 2.
[embodiment 3]: with reference to table 3
Making Ag is 1.9g/m
2Be coated with the coating fluid of silver halide emulsion layer, all operate similarly to Example 1 in addition, obtain the conductive film for touch screen of embodiment 3.
[embodiment 4]: with reference to table 3
Making Ag is 2.1g/m
2Be coated with the coating fluid of silver halide emulsion layer, all operate similarly to Example 1 in addition, obtain the conductive film for touch screen of embodiment 4.
[embodiment 5]: with reference to table 3
Making Ag is 2.3g/m
2Be coated with the coating fluid of silver halide emulsion layer, all operate similarly to Example 1 in addition, obtain the conductive film for touch screen of embodiment 5.
[embodiment 6]: with reference to table 3
Making Ag is 2.5g/m
2Be coated with the coating fluid of silver halide emulsion layer, all operate similarly to Example 1 in addition, obtain the conductive film for touch screen of embodiment 6.
[embodiment 7]: with reference to table 3
Making Ag is 2.7g/m
2Be coated with the coating fluid of silver halide emulsion layer, all operate similarly to Example 1 in addition, obtain the conductive film for touch screen of embodiment 7.
[embodiment 8]: with reference to table 4
Making Ag is 2.9g/m
2Be coated with the coating fluid of silver halide emulsion layer, all operate similarly to Example 1 in addition, obtain the conductive film for touch screen of embodiment 8.
[embodiment 9]: with reference to table 4
Making Ag is 3.1g/m
2Be coated with the coating fluid of silver halide emulsion layer, all operate similarly to Example 1 in addition, obtain the conductive film for touch screen of embodiment 9.
[embodiment 10]: with reference to table 4
Making Ag is 2.1g/m
2Be coated with the coating fluid of silver halide emulsion layer, live width/the cancellate photomask live width of the developed silver picture of μ m/592 μ m/the cancellate photomask that is spaced apart of μ m/8 μ m (spacing is 600 μ m) exposes at interval=592 at interval=8 by forming, all operate similarly to Example 1 in addition, obtain the conductive film for touch screen of embodiment 10.
[embodiment 11]: with reference to table 4
Making Ag is 2.1g/m
2Be coated with the coating fluid of silver halide emulsion layer, live width/the cancellate photomask live width of the developed silver picture of μ m/792 μ m/the cancellate photomask that is spaced apart of μ m/8 μ m (spacing is 800 μ m) exposes at interval=792 at interval=8 by forming, all operate similarly to Example 1 in addition, obtain the conductive film for touch screen of embodiment 11.
[embodiment 12]: with reference to table 4
Making Ag is 2.1g/m
2Be coated with the coating fluid of silver halide emulsion layer, on supporter, do not carry out surface hydrophilic and handle, all operate similarly to Example 1 in addition, obtain the conductive film for touch screen of embodiment 12.
[embodiment 13]: with reference to table 4
Making Ag is 2.1g/m
2Be coated with the coating fluid of silver halide emulsion layer, after development treatment, do not utilize the dura mater of glutaraldehyde water solution dipping to handle, all operate similarly to Example 1 in addition, obtain the conductive film for touch screen of embodiment 13.
[comparative example 1]: with reference to table 5
Making Ag is 1.4g/m
2Be coated with the coating fluid of silver halide emulsion layer, all operate similarly to Example 1 in addition, obtain the conductive film for touch screen of comparative example 1.
[comparative example 2]: with reference to table 5
Making Ag is 3.2g/m
2Be coated with the coating fluid of silver halide emulsion layer, all operate similarly to Example 1 in addition, obtain the conductive film for touch screen of comparative example 2.
[comparative example 3]: with reference to table 5
Making Ag is 2.1g/m
2Be coated with the coating fluid of silver halide emulsion layer, live width/the cancellate photomask live width of the developed silver picture of μ m/492 μ m/the cancellate photomask that is spaced apart of μ m/8 μ m (spacing is 500 μ m) exposes at interval=492 at interval=8 by forming, all operate similarly to Example 1 in addition, obtain the conductive film for touch screen of comparative example 3.
[comparative example 4]: with reference to table 5
Making Ag is 2.1g/m
2Be coated with the coating fluid of silver halide emulsion layer, live width/the cancellate photomask live width of the developed silver picture of μ m/892 μ m/the cancellate photomask that is spaced apart of μ m/8 μ m (spacing is 900 μ m) exposes at interval=892 at interval=8 by forming, all operate similarly to Example 1 in addition, obtain the conductive film for touch screen of comparative example 4.
[comparative example 5]
Making Ag is 2.1g/m
2Be coated with the coating fluid of silver halide emulsion layer, live width/the cancellate photomask live width of the developed silver picture of μ m/592 μ m/the cancellate photomask that is spaced apart of μ m/8 μ m (spacing is 600 μ m) exposes at interval=592 at interval=8 by forming, and do not form transparency conducting layer, all operate similarly to Example 1 in addition, obtain the conductive film for touch screen of comparative example 5.
[comparative example 6]
Making Ag is 2.1g/m
2Be coated with the coating fluid of silver halide emulsion layer, and do not form transparency conducting layer, all operate similarly to Example 1 in addition, obtain the conductive film for touch screen of comparative example 6.
[comparative example 7]
Making Ag is 2.1g/m
2Be coated with the coating fluid of silver halide emulsion layer, live width/the cancellate photomask live width of the developed silver picture of μ m/792 μ m/the cancellate photomask that is spaced apart of μ m/8 μ m (spacing is 800 μ m) exposes at interval=792 at interval=8 by forming, and do not form transparency conducting layer, all operate similarly to Example 1 in addition, obtain the conductive film for touch screen of comparative example 7.
[evaluation]
(evaluation of the mensuration of sheet resistance and the deviation of sheet resistance)
The sheet resistance of conductive layer 14 uses the noncontact resistance instrument 717B (H) of COPER Electronics Co., Ltd system to measure.In addition, the sheet resistance of peristome 22 uses digital ultra-high resistance (SR meter) R8340A of ADVANTEST corporate system to measure.
(evaluation of ripple)
The system PDP (TH-42PX300) of Matsushita Electric Industries that surperficial electromagnetic shielding film has been removed in preparation disposes rotating disk thereon, and this rotating disk is used to be provided with the conductive film for touch screen of having made.Rotating disk is that the glass of 5mm is made by thickness, imitation PDP front panel.In addition, also have angle index, can learn the drift angle of the conductive film for touch screen of setting.Power supply is cut PDP, HDMI terminal and the pictcure generator (ASTROVG828D) of PDP is connected.To deliver to PDP from white 255 signals of the output valve maximum of pictcure generator.With adhesive tape conductive film for touch screen entirely is fixed on the rotating disk.Make the room become the darkroom, make rotating disk rotation between drift angle-45 °～+ 45 °, perusal is also estimated ripple.About the observability of ripple, observe at the viewing distance place of the positive 1.5m of distance P DP, with the unconspicuous ◎ that is evaluated as of ripple, with visible few ripple but unquestionedly be evaluated as zero, ripple significantly is evaluated as *, each drift angle is estimated.As comprehensive grading, the angular range that will become ◎ is to be evaluated as 05 more than 15 °, the angular range that will become ◎ is lower than 15 ° and be evaluated as 04 more than 10 °, the angular range that will become ◎ be lower than 10 ° be evaluated as △ 3, with do not have the angular range that becomes ◎ and become * angular range be lower than 10 ° be evaluated as △ 2, with do not have the angular range that becomes ◎ and become * angular range be being evaluated as more than 10 ° * 1.
(evaluation of outward appearance)
Make the demonstration of the PDP that uses in the evaluation of ripple become white from black gradually, during perusal, the GTG with the lattice of conductive film for touch screen when eye-catching is standardized as 5 stages and estimates.At this moment, with lattice with eye-catching being evaluated as of pullous gray scale " * 1 ", eye-catching or not eye-catching fully be evaluated as " 05 " with subalbous gray scale, so estimate, eye-catching with gray scale therebetween, from being divided into " 04 ", " △ 3 ", " △ 2 " successively to black near white.
(linear evaluation)
Is the square of 5cm at touch-screen with the pen input length of side, and perusal confirms whether foursquare each limit of describing this moment exists broken string or disorderly (tiny is concavo-convex).When 4 limits all are evaluated as 05 less than broken string or when disorderly, there is broken string on any 1 limit or is evaluated as 04 when disorderly, and there is broken string on any 2 limits or is evaluated as △ 3 when disorderly, and there is short-term on any 3 limits or be evaluated as when disorderly * 2, and all there is broken string on all limits or be evaluated as when disorderly * and 1.
(evaluation of sliding)
One end of strip conductive film for touch screen is fixed, the nib of the polyacetals system of 0.8R is slided on the part of conductive film for touch screen middle distance fixed position 0.5mm.Nib is applied the load of 500g, and sliding speed is 5 times/second, and sliding length is 20m.After nib slides,, analyze climbing with respect to the initial stage sheet resistance with the sheet resistance of above-mentioned mouthful of レ ス タ one GP (model MCP-T610) series connection 4 probes (ASP) mensuration conductive film for touch screen.If climbing is lower than 1.5 and is evaluated as zero, if 1.5 or more and be lower than 2.0 and be evaluated as △, as if then be evaluated as more than 2.0 *.
By embodiment 1～13 as can be known, the sheet resistance of conductive film for touch screen for example is applicable to the touch-screen of resistance membrane type in the scope of 200～800 Ω/sq..And because the spacing Pa of the lattice 18 of conductive layer 14 is more than the 600 μ m, so ripple fully reduces.In addition, because the spacing Pa of lattice 18 is below the 800 μ m, so the lattice 18 of conductive layer 14 becomes not eye-catching, and outward appearance is good.Therefore, particularly embodiment 1～13, and the touch-screen that writings and image by screen displaying etc. is clear and easy to see, observability is excellent can be provided.
In addition, by embodiment 1～13 as can be known, owing to formed the transparency conducting layer that is dispersed with electrically conductive microparticle that is different from conductive layer 14, the linearity when therefore pen is imported improves.In addition, embodiment 1～11 has been owing to formed priming coat on supporter, but also carried out the dura mater processing, so sliding improves.In addition, embodiment 12 is not owing to form priming coat, thus its be evaluated as *.In addition, embodiment 13 does not handle owing to implementing dura mater, so it is evaluated as △.
On the other hand, comparative example 1 and 2 the sheet resistance scope that all broken away from 200～800 Ω/sq..In addition, comparative example 3 is because spacing is 500 μ m (being lower than 600 μ m), so ripple is eye-catching, it is evaluated as * and 2.Relatively, comparative example 4 is because spacing is 900 μ m (surpassing 800 μ m), so lattice is eye-catching, it is evaluated as * and 2.Comparative example 5～7 is not owing to form transparency conducting layer, so linearity is poor, and its evaluation is * and 1.
Need to prove that conductive film for touch screen of the present invention and manufacture method thereof are not limited to above-mentioned execution mode, under the prerequisite that does not break away from purport of the present invention, can adopt various formations, this point is unquestionable.
Claims (12)
1. conductive film for touch screen, it has on supporter (12) by the conductive layer (14) that contains silver that silver salt emulsion layer (16) exposure imaging is formed, it is characterized in that,
The silver coating amount of described silver salt emulsion layer (16) is 1.5～3.1g/m
2,
It is the lattice (18) of 600 μ m～800 μ m that described conductive layer (14) forms spacing, and sheet resistance is 200～800 Ω/sq..
2. conductive film for touch screen according to claim 1 is characterized in that,
The volume ratio of the silver/adhesive of described silver salt emulsion layer (16) is more than 1/4.
3. conductive film for touch screen according to claim 1 is characterized in that,
The volume ratio of the silver/adhesive of described silver salt emulsion layer (16) is 1/2～1/0.7.
4. conductive film for touch screen according to claim 1 is characterized in that,
The live width of described conductive layer (14) is 5～10 μ m.
5. conductive film for touch screen according to claim 1 is characterized in that,
Also possess transparency conducting layer,
Described transparency conducting layer contains electrically conductive microparticle and adhesive, and the mass ratio of described electrically conductive microparticle and adhesive counts 1/3～2/1 with electrically conductive microparticle/adhesive.
6. a conducting film forms and uses photosensitive material, and it has the silver salt emulsion layer, it is characterized in that,
The silver coating amount of described silver salt emulsion layer (16) is 1.5～3.1g/m
2,
It also possesses transparency conducting layer,
Described transparency conducting layer contains electrically conductive microparticle and adhesive, and the mass ratio of described electrically conductive microparticle and adhesive counts 1/3～2/1 with electrically conductive microparticle/adhesive.
7. conducting film according to claim 6 forms and uses photosensitive material, it is characterized in that,
Described silver salt emulsion layer (16) contains described electrically conductive microparticle, and is also used as described transparency conducting layer,
The content of described electrically conductive microparticle is 0.15～0.5g/m
2
8. conducting film according to claim 6 forms and uses photosensitive material, it is characterized in that,
Described transparency conducting layer is positioned at the upper layer side of described silver salt emulsion layer (16),
The content of the described electrically conductive microparticle of described transparency conducting layer is 0.2～0.4g/m
2
9. conducting film according to claim 6 forms and uses photosensitive material, it is characterized in that,
Described transparency conducting layer is positioned at the lower layer side of described silver salt emulsion layer (16),
The content of the described electrically conductive microparticle of described transparency conducting layer is 0.15～0.5g/m
2
10. conducting film according to claim 7 forms and uses photosensitive material, it is characterized in that,
When described electrically conductive microparticle when being spherical, average grain diameter is 0.085～0.12 μ m,
When described electrically conductive microparticle was needle-like, the average axial length of major axis was that the average axial length of 0.2～20 μ m, minor axis is 0.01～0.02 μ m.
11. a conductive material is characterized in that,
Its by the described conducting film of claim 6 is formed with photosensitive material carry out pattern exposure, development treatment obtains.
12. a conducting film, it has conductive layer (14) on supporter (12), it is characterized in that,
Layer beyond described conductive layer (14) or the described conductive layer contains electrically conductive microparticle and adhesive,
The mass ratio of described electrically conductive microparticle and adhesive counts 1/3～2/1 with electrically conductive microparticle/adhesive.
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2009
- 2009-10-28 CN CN201310368778.3A patent/CN103456391B/en active Active
- 2009-10-28 CN CN2009102081159A patent/CN101728009B/en not_active Expired - Fee Related
- 2009-10-30 KR KR1020090104098A patent/KR20100048932A/en not_active Application Discontinuation
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290129A (en) * | 2010-06-18 | 2011-12-21 | 富士胶片株式会社 | Conductive film and method for producing the same |
| CN103513821A (en) * | 2012-06-25 | 2014-01-15 | 三星电机株式会社 | Touch panel |
| CN103164100A (en) * | 2013-03-28 | 2013-06-19 | 南昌欧菲光科技有限公司 | Capacitive touch screen |
| CN103164100B (en) * | 2013-03-28 | 2014-08-06 | 南昌欧菲光科技有限公司 | Capacitive touch screen |
| CN103309541A (en) * | 2013-06-27 | 2013-09-18 | 袁博 | Manufacturing method for capacitance type touch screen wire circuit |
| CN110502148A (en) * | 2019-08-16 | 2019-11-26 | 芜湖伦丰电子触摸屏产业技术研究院有限公司 | A kind of touch screen preparation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103456391A (en) | 2013-12-18 |
| CN101728009B (en) | 2013-09-18 |
| JP2010108878A (en) | 2010-05-13 |
| CN103456391B (en) | 2016-01-20 |
| JP5469849B2 (en) | 2014-04-16 |
| KR20100048932A (en) | 2010-05-11 |
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