CN103777835A - Double-sided conductive transparent film - Google Patents
Double-sided conductive transparent film Download PDFInfo
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- CN103777835A CN103777835A CN201410046594.XA CN201410046594A CN103777835A CN 103777835 A CN103777835 A CN 103777835A CN 201410046594 A CN201410046594 A CN 201410046594A CN 103777835 A CN103777835 A CN 103777835A
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Abstract
The invention discloses a double-sided conductive transparent film which comprises a basic material with a first surface and a second surface, wherein the first surface and the second surface are opposite to each other and are coated with grid line layers respectively; a grid unit formed between the grid lines in the grid line layers is a transparent region; each grid line layer sequentially comprises a black layer, a conductive layer and a protection layer from inside to outside, the black layer is a metal oxide layer, the conductive layer is a metal layer, and the protection layer is a metal alloy layer or the metal oxide layer used for preventing the conductive layer from being oxidized. According to the double-sided conductive transparent film, metal grids are arranged on the two sides of the film, so that the impedance and the cost can be reduced and the light transmittance is good; in addition, originally a capacitive touch screen is formed by fitting two films and now the capacitive touch screen is formed by only one film, so that one film and fitting glue are removed and the cost is remarkably reduced; moreover, the two films need to be aligned in position when fitting each other, and one double-sided film does not need to be subjected to the fitting process, so that the yield can be increased.
Description
Technical field
the present invention relates to a kind of conductive layer technical field, particularly a kind of nesa coating of metal grill.
Background technology
nesa coating is widely used in the fields such as touch-screen, flat pannel display, photovoltaic device, electromagnetic screen, the special application rapid growth in capacitive touch screen field.Touch-screen is the induction installation that can receive the input signals such as touch.Touch-screen has given information interaction brand-new looks, is extremely attractive brand-new information interaction equipment.The development of touch screen technology has caused common concern both domestic and external, has become the Chaoyang new high-tech industry that photoelectricity industry is a dark horse.
nesa coating is as vital ingredient in touch-screen, and at present, the conducting film of touch-screen is mainly with ITO(tin indium oxide) be formed on insulating substrate by vacuum coating, graphical etched technique.But ITO material expensive, production cost is very high; And limited by coating temperature, ITO is plated on base material can not accomplish Low ESR, is unfavorable for making large-area touch-screen, impedance height capacitive touch screen can reduce performance, even drive integrated circult cannot drive it normally to work.
in addition, the transmittance of the conducting film that ITO makes is not very high, conventionally only has 80%-88% left and right, brightness, contrast and the color etc. that show are had influence on like this, in the time that transmittance is lower, just must heighten brightness if want to see clearly screen, the power consumption of equipment will inevitably increase, and also can increase the stimulation of eyes simultaneously.
Summary of the invention
the present invention seeks to: a kind of two-sided conductive transparent film is provided, it is at base material both side surface plating black layer, conductive layer and protective seam respectively, and etching forms metal grill, the two sides that is hyaline membrane is all metal grill, replace ITO by metal grid lines, not only can reduce impedance, reduce cost, and there is good transmittance; In addition, originally wanted two films to be sticked to form capacitive touch screen, and now as long as a film, reduced the glue of a film and laminating use, cost obviously reduces, and two films laminatings need aligned position, and a double-side membrane does not need to fit, and yield can improve.
technical scheme of the present invention is: a kind of two-sided conductive transparent film, comprise base material, base material comprises first surface and second surface, first surface and second surface are oppositely arranged, described first surface and second surface respectively plating have mesh lines layer, the grid cell forming between mesh lines in mesh lines layer is clear area, and mesh lines layer comprises from inside to outside successively: black layer, conductive layer and protective seam, and black layer is metal oxide layer; Conductive layer is metal level; Protective seam is metal alloy layer or the metal oxide layer for preventing conductive layer oxidation.
preferably, the mesh lines in described mesh lines layer is laid along first direction and second direction respectively, and first direction and second direction intersect, and clear area is quadrilateral.
preferably, between the black layer of described first surface, second surface and corresponding side, be provided with bottom, described bottom is SiO
2
layer.
preferably, the thickness of described conductive layer is 0.5-5 μ m, and the metal of described conductive layer is copper.
preferably, the thickness of described black layer is 40nm-100nm, and the metal oxide of described black layer is the potpourri of chromium oxide, nickel oxide.
preferably, the thickness of described protective seam is 20nm-500nm, and described protective seam is the metal alloy layer being made up of cupronickel or stainless steel, or the metal oxide layer being made up of the potpourri of chromium oxide, nickel oxide.
preferably, described base material is glass or overlay.
the transmittance of conducting film in the present invention, impedance are relevant with live width and the line-spacing of mesh lines.Mesh lines distance is larger, and live width is less, and transmittance is just higher; And the distance of mesh lines is less, live width is larger, and electric conductivity is just higher, and impedance is just lower.
described nesa coating, the method for utilizing vacuum sputtering coating or evaporation coating successively by each layer of plating on base material, form each coating, and then utilize etching method to make mesh lines.
advantage of the present invention is:
1. the present invention is at base material both side surface plating black layer, conductive layer and protective seam respectively, and etching forms metal grill, the two sides of hyaline membrane is all metal grill, replaces ITO by metal grid lines, impedance obviously diminishes, and can stablize and be applicable to middle giant-screen touch-screen; Compare ITO conducting film and have higher transmittance, in identical display brightness situation, the power consumption while using conducting film of the present invention is lower, also less to the stimulation of eyes; And the price of metal grill is significantly less than ITO conducting film, reduce the cost of touch-screen.
. originally wanted two films to be sticked to form capacitive touch screen, the present invention is as long as a film, reduced the glue of a film and laminating use, and cost obviously reduces, and two films laminatings need aligned position, and a double-side membrane does not need to fit, and yield can improve.
. it is black that black layer utilizes optical interference to obtain surface, can reduce visible reflected light, makes mesh lines be difficult for being seen by naked eyes.
. after the first surface of base material and second surface spray some ink logos, be not easy to carry out plated film, but add SiO between first surface, second surface and corresponding side black layer
2
bottom after, more easily carry out plated film, make the each layer of surface that can firmly be plated on base material, difficult drop-off.
Accompanying drawing explanation
below in conjunction with drawings and Examples, the invention will be further described:
fig. 1 is the structural representation before etching of the present invention;
fig. 2 is structural representation of the present invention.
wherein: 1 base material;
2 mesh lines layers; 21 mesh lines; 22 clear areas; 23 black layers; 24 conductive layers; 25 protective seams;
3 bottoms.
Embodiment
embodiment 1: as shown in Figure 1; a kind of two-sided conductive transparent film; include successively from bottom to up protective seam 25, conductive layer 24, black layer 23, bottom 3, base material 1, bottom 3, black layer 23, conductive layer 24, protective seam 25; base material 1 is glass or is overlay; it comprises the first surface and the second surface that are oppositely arranged; at the first surface of base material 1 and second surface place, respectively with the method plating bottom 3 of vacuum sputtering coating or evaporation coating, bottom 3 is transparent SiO
2
layer, can spray ink on first surface and second surface, forms ink logo; Then plating black layer 23, conductive layer 24 and protective seam 25 successively on bottom 3, wherein, black layer 23 is metal oxide layer, the potpourri of preferential oxidation chromium and nickel oxide, its thickness is 40nm-100nm, and what utilize that the method for optical interference can make that naked eyes see is black surface; Conductive layer 24 is metal level, is preferably copper, and its thickness is 0.5-5 μ m; Protective seam 25 is metal alloy layer, is preferably cupronickel or stainless steel, and its thickness is 20nm-500nm, and protective seam 25 is used for preventing that conductive layer 24 is oxidized.After overlay film completes, then black layer 23, conductive layer 24 and protective seam 25 are carried out to etching, form mesh lines; mesh lines is divided into both direction, is divided into first direction and second direction, between mesh lines, intersects; it is clear area that gap between mesh lines forms grid cell, and grid cell is quadrilateral.In the time that the nesa coating in the present embodiment and display screen are used in conjunction with; display screen is in the outside of protective seam 25; naked eyes are observed towards second surface from first surface; in printing opacity direction; the projection of conductive layer 24 and protective seam 25 all projects on black layer 23, and naked eyes will be can't see the waffle-like pattern of conductive layer 24 and protective seam 25.
when in the present embodiment, the thickness of conductive layer 24 being set as to 2 μ m, the live width of metal grid lines is 4-5 μ m, and line-spacing is 300-500 μ m, and the numerical value of surface resistance is now 10 ohm of left and right, when base material 1 use be the thick simple glass of 1.1mm time, transmittance can reach 90% left and right.
embodiment 2: the invention provides another kind of double-sided transparent conducting film, the present embodiment, compared with embodiment 1, changes protective seam 25 into metal oxide layer into; the potpourri of preferential oxidation chromium and nickel oxide; it also can play the function of anti-oxidation, and like this, naked eyes also can be observed from opposite side.
the present invention is at base material both side surface plating black layer, conductive layer and protective seam respectively, and etching formation metal grill, and the two sides of hyaline membrane is all metal grill, replace ITO by metal grid lines, not only can reduce impedance, reduce cost, and there is good transmittance; In addition, originally wanted two films to be sticked to form capacitive touch screen, and now as long as a film, reduced the glue of a film and laminating use, cost obviously reduces, and two films laminatings need aligned position, and a double-side membrane does not need to fit, and yield can improve.
below be only concrete exemplary applications of the present invention, protection scope of the present invention is not constituted any limitation.In addition to the implementation, the present invention can also have other embodiment.All employings are equal to the technical scheme of replacement or equivalent transformation formation, within all dropping on the present invention's scope required for protection.
Claims (10)
1. a two-sided conductive transparent film, is characterized in that: comprising:
Base material (1), comprises first surface and second surface, and first surface and second surface are oppositely arranged;
Described first surface and second surface respectively plating have mesh lines layer (2), and the grid cell forming between the mesh lines (21) in mesh lines layer (2) is clear area (22), and mesh lines layer (2) comprises from inside to outside successively:
Black layer (23), it is metal oxide layer;
Conductive layer (24), it is metal level;
Protective seam (25), it is metal alloy layer or metal oxide layer for preventing conductive layer oxidation.
2. the two-sided conductive transparent film of one according to claim 1, it is characterized in that: the mesh lines (21) in described mesh lines layer (2) is laid along first direction and second direction respectively, first direction and second direction intersect, and clear area (22) are quadrilateral.
3. the two-sided conductive transparent film of one according to claim 1, is characterized in that: between the black layer (23) of described first surface, second surface and corresponding side, be provided with bottom (3), described bottom (3) is SiO
2layer.
4. according to the two-sided conductive transparent film of one described in claim 1 or 2 or 3, it is characterized in that: the thickness of described conductive layer (24) is 0.5-5 μ m.
5. according to the two-sided conductive transparent film of one described in claim 1 or 2 or 3, it is characterized in that: the metal of described conductive layer (24) is copper.
6. according to the two-sided conductive transparent film of one described in claim 1 or 2 or 3, it is characterized in that: the thickness of described black layer (23) is 40nm-100nm.
7. according to the two-sided conductive transparent film of one described in claim 1 or 2 or 3, it is characterized in that: the metal oxide of described metal oxide layer is the potpourri of chromium oxide, nickel oxide.
8. according to the two-sided conductive transparent film of one described in claim 1 or 2 or 3, it is characterized in that: the thickness of described protective seam (25) is 20nm-500nm.
9. according to the two-sided conductive transparent film of one described in claim 1 or 2 or 3, it is characterized in that: the metal alloy of described metal alloy layer is cupronickel or stainless steel.
10. according to the two-sided conductive transparent film of one described in claim 1 or 2 or 3, it is characterized in that: described base material (1) is glass or overlay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410046594.XA CN103777835A (en) | 2014-02-11 | 2014-02-11 | Double-sided conductive transparent film |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410046594.XA CN103777835A (en) | 2014-02-11 | 2014-02-11 | Double-sided conductive transparent film |
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| CN103777835A true CN103777835A (en) | 2014-05-07 |
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| CN201410046594.XA Pending CN103777835A (en) | 2014-02-11 | 2014-02-11 | Double-sided conductive transparent film |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017097204A1 (en) * | 2015-12-08 | 2017-06-15 | 金英花 | Metal mesh single-film dual sided capacitive screen sensor and manufacturing method thereof |
| CN108089771A (en) * | 2018-02-13 | 2018-05-29 | 京东方科技集团股份有限公司 | Touch base plate, display panel, display device |
| CN110174973A (en) * | 2019-06-18 | 2019-08-27 | 京东方科技集团股份有限公司 | Display device, display panel and its manufacturing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102664076A (en) * | 2012-05-14 | 2012-09-12 | 南昌欧菲光科技有限公司 | Novel double-sided conductive film manufacturing process |
| CN203366778U (en) * | 2013-07-25 | 2013-12-25 | 深圳欧菲光科技股份有限公司 | Double-face conductive film and touch screen |
| CN103472969A (en) * | 2013-09-26 | 2013-12-25 | 苏州胜利光学玻璃有限公司 | Capacitive touch screen |
| CN103474133A (en) * | 2013-09-26 | 2013-12-25 | 苏州胜利光学玻璃有限公司 | Transparent electric conduction film |
-
2014
- 2014-02-11 CN CN201410046594.XA patent/CN103777835A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664076A (en) * | 2012-05-14 | 2012-09-12 | 南昌欧菲光科技有限公司 | Novel double-sided conductive film manufacturing process |
| CN203366778U (en) * | 2013-07-25 | 2013-12-25 | 深圳欧菲光科技股份有限公司 | Double-face conductive film and touch screen |
| CN103472969A (en) * | 2013-09-26 | 2013-12-25 | 苏州胜利光学玻璃有限公司 | Capacitive touch screen |
| CN103474133A (en) * | 2013-09-26 | 2013-12-25 | 苏州胜利光学玻璃有限公司 | Transparent electric conduction film |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017097204A1 (en) * | 2015-12-08 | 2017-06-15 | 金英花 | Metal mesh single-film dual sided capacitive screen sensor and manufacturing method thereof |
| CN108089771A (en) * | 2018-02-13 | 2018-05-29 | 京东方科技集团股份有限公司 | Touch base plate, display panel, display device |
| CN110174973A (en) * | 2019-06-18 | 2019-08-27 | 京东方科技集团股份有限公司 | Display device, display panel and its manufacturing method |
| CN110174973B (en) * | 2019-06-18 | 2022-10-25 | 京东方科技集团股份有限公司 | Display device, display panel and manufacturing method thereof |
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Application publication date: 20140507 |