CN103472969A - Capacitive touch screen - Google Patents
Capacitive touch screen Download PDFInfo
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- CN103472969A CN103472969A CN2013104449072A CN201310444907A CN103472969A CN 103472969 A CN103472969 A CN 103472969A CN 2013104449072 A CN2013104449072 A CN 2013104449072A CN 201310444907 A CN201310444907 A CN 201310444907A CN 103472969 A CN103472969 A CN 103472969A
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- layer
- wire
- touch screen
- capacitive touch
- lead
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- 239000000758 substrate Substances 0.000 claims abstract description 13
- 239000011521 glass Substances 0.000 claims abstract description 7
- 230000001939 inductive effect Effects 0.000 claims description 28
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- 230000001737 promoting effect Effects 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 238000007747 plating Methods 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 3
- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
- 150000004706 metal oxides Chemical group 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 238000002834 transmittance Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000002708 enhancing effect Effects 0.000 abstract 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 abstract 1
- 239000002985 plastic film Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 74
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical compound O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
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Abstract
The invention discloses a capacitive touch screen, which comprises a sensor substrate, wherein the sensor substrate comprises a first surface and a second surface opposite to the first surface, and is made of glass or a transparent plastic film, the first surface is plated and is etched into a reticular sensing layer, the sensing layer comprises a black layer, a conducting layer and a stickiness enhancing layer, the black layer is pasted on one surface of a touch screen panel, the second surface is plated with a driving layer with ITO (indium tin oxide) patterns, and the driving layer and the sensing layer are provided with corresponding lead wires. The sensing layer arranged in the capacitive touch screen adopts lattice wires for replacing the ITO patterns in the prior art, the impedance of a sensor is greatly reduced, the sensing layer is suitable for large-screen touch screens, the light transmittance is also improved, and in addition, the manufacturing cost is also greatly reduced.
Description
Technical field
the present invention relates to a kind of touch-screen, be specifically related to a kind of capacitive touch screen.
Background technology
touch-screen, as a kind of input medium, is the simplest, convenient, natural at present a kind of man-machine interaction mode.Therefore, touch-screen more and more is applied in various electronic products, such as mobile phone, notebook computer, MP3/MP4 etc.
conductive layer is vital ingredient in touch-screen, at present, the conductive layer of touch-screen is mainly with the ITO(tin indium oxide) by vacuum coating, graphical etched technique, be formed on insulating substrate, again conductive layer is attached on transparent glass panel by adhesive layer, thereby forms touch-screen.
but the 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, the impedance height capacitive touch screen can reduce performance, even drive integrated circult can't drive its normal operation.
in addition, the transmittance of the conducting film that ITO makes is not very high, its transmittance of touch-screen that common two-layer ITO film is made only has the 80%-85% left and right, brightness, contrast and the color etc. that show have been had influence on like this, when transmittance is low, just must heighten brightness if want to see clearly screen, the power consumption of equipment will inevitably increase, and to the stimulation of eyes, also can increase simultaneously.
Summary of the invention
the present invention seeks to: a kind of capacitive touch screen is provided, is intended to solve the high technical matters of existing capacitive touch screen impedance, improve its transmittance simultaneously.
technical scheme of the present invention is:
a kind of capacitive touch screen comprises touch panel, sensor substrate, inductive layer and driving layer; Wherein, sensor substrate comprises first surface and the second surface be oppositely arranged with first surface; Inductive layer is plated on first surface, and sticks to the surface of touch panel, and inductive layer comprises the conductive layer consisted of some metal wires intersections; Drive layer plating in second surface, drive layer to comprise some ITO patterns.
preferably, inductive layer also comprises black layer and the adhesion promoting layer identical with the conductive layer shape, and adhesion promoting layer is plated between first surface and conductive layer, and black layer is plated on conductive layer first surface side far away, and adhesion promoting layer is metal alloy layer, and black layer is metal oxide layer.
preferably, described metal wire is laid along first direction and second direction respectively, and first direction and second direction intersect, and the region shape surrounded between metal wire is quadrilateral.
preferably, the capacitive touch screen the present invention relates to also comprises driving layer lead-in wire and inductive layer lead-in wire, drives a layer lead-in wire to be attached to second surface, drives an end of layer lead-in wire to be electrically connected to the ITO pattern; The inductive layer lead-in wire is attached to first surface, and an end of inductive layer lead-in wire is electrically connected to metal wire; The other end of described lead-in wire all is electrically connected to integrated circuit.
preferably, inductive layer sticks on touch panel by transparent adhesive.
preferably, sensor substrate is glass or overlay.
preferably, the metal wire in conductive layer is copper.
preferably, touch panel is glass or overlay.
preferably, described lead-in wire is silver or copper.
the ITO pattern of the driving layer in the present invention also can replace with cross one another metal wire, it is very thin that but the thickness of the plating ITO of institute film can be controlled, its thickness range is between 10nm-30nm, for inductive layer is used the ITO film, cost is lower, and the impact on impedance and transmittance is also very little, therefore drive layer still just to use ITO pattern of the prior art.
advantage of the present invention is:
1. the conductive layer of inductive layer replaces ITO pattern of the prior art with metal grill, and impedance obviously reduces, and is applicable to middle large scale touch-screen, and transmittance also improves.
.ITO because it is expensive, after with metal grill, it being replaced, greatly reduce production cost.
The accompanying drawing explanation
below in conjunction with drawings and Examples, the invention will be further described:
fig. 1 is structural representation of the present invention;
fig. 2 is sensor structure schematic diagram of the present invention.
wherein: 1. touch panel, 2. glue-line, 3. inductive layer, 4. sensor substrate, 5. driving layer.
Embodiment
embodiment:
the capacitive touch screen the present invention relates to, as shown in Figure 1 and Figure 2, sensor substrate 4 comprises first surface and the second surface be oppositely arranged with first surface, be attached with inductive layer 3 at first surface, inductive layer comprises black layer, conductive layer and adhesion promoting layer, and in the method for vacuum sputtering coating or evaporation coating plating black layer, conductive layer and adhesion promoting layer successively for first surface, wherein black layer is metal oxide layer, be preferably the potpourri of chromium oxide, nickel oxide, its thick scope is 40nm-100nm; Conductive layer is metal level, and metal is preferably copper; Adhesion promoting layer is metal alloy layer, is preferably nickel alloy, and its thickness range is 2nm-50nm, described.Then by black layer, conductive layer and adhesion promoting layer etching, form latticedly, mesh lines is divided into minute first direction and second direction is laid, and the grid cell that mesh lines encloses is quadrilateral.Metal wire in conductive layer is electrically connected to an end of inductive layer lead-in wire, and the inductive layer lead-in wire is attached to first surface, and the other end of inductive layer lead-in wire is electrically connected to IC.Bonding with transparent adhesive between inductive layer 3 and touch panel 1, above-mentioned adhesive forms glue-line 2 between touch panel 1 and inductive layer 3, after plating has adhesion promoting layer on conductive layer, can make glue-line 2 more firmly bonding inductive layer 3 and touch panel 1.Be attached with on the second surface of sensor substrate 4 and drive layer 5, drive layer 5 to comprise the ITO pattern be plated on second surface, the ITO pattern is electrically connected to an end that drives layer lead-in wire, drives layer lead-in wire to adhere to and second surface, drives the other end of layer lead-in wire to be electrically connected to IC; Driving layer lead-in wire and inductive layer lead-in wire can be silver or copper or other conductive material.Sensor substrate 4 can be glass or overlay, can prevent that circuit from disturbing.When the touch-screen in the present embodiment and display screen are used in conjunction with, display screen is placed in the outside that drives layer 5, when naked eyes are observed, black layer utilizes the reflection of interference of light principle to inject light from direction of observation, and naked eyes will be can't see the waffle-like pattern of conductive layer and adhesion promoting layer.
those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. a capacitive touch screen, is characterized in that, comprising:
Touch panel;
Sensor substrate, described sensor substrate comprises first surface and the second surface be oppositely arranged with first surface;
Inductive layer, described inductive layer is plated on first surface, and sticks to the surface of touch panel, and inductive layer comprises the conductive layer consisted of some metal wires intersections;
Drive layer, described driving layer plating, in second surface, drives layer to comprise some ITO patterns.
2. capacitive touch screen according to claim 1, it is characterized in that, inductive layer also comprises black layer and the adhesion promoting layer identical with the conductive layer shape, adhesion promoting layer is plated between first surface and conductive layer, black layer is plated on conductive layer first surface side far away, adhesion promoting layer is metal alloy layer, and black layer is metal oxide layer.
3. capacitive touch screen according to claim 1, is characterized in that, described metal wire is laid along first direction and second direction respectively, and first direction and second direction intersect, and the region shape surrounded between metal wire is quadrilateral.
4. according to the described capacitive touch screen of any one in claim 1 ~ 3, it is characterized in that, also comprise and drive layer lead-in wire and inductive layer lead-in wire, drive layer lead-in wire to be attached to second surface, drive an end of layer lead-in wire to be electrically connected to the ITO pattern; The inductive layer lead-in wire is attached to first surface, and an end of inductive layer lead-in wire is electrically connected to metal wire; The other end of described lead-in wire all is electrically connected to integrated circuit.
5. capacitive touch screen according to claim 1, is characterized in that, inductive layer sticks on touch panel by transparent adhesive.
6. capacitive touch screen according to claim 1, is characterized in that, sensor substrate is glass or overlay.
7. capacitive touch screen according to claim 1, is characterized in that, the metal wire in conductive layer is copper.
8. capacitive touch screen according to claim 1, is characterized in that, touch panel is glass or overlay.
9. want 4 described capacitive touch screens according to right, it is characterized in that, described lead-in wire is silver or copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104449072A CN103472969A (en) | 2013-09-26 | 2013-09-26 | Capacitive touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104449072A CN103472969A (en) | 2013-09-26 | 2013-09-26 | Capacitive touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103472969A true CN103472969A (en) | 2013-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013104449072A Pending CN103472969A (en) | 2013-09-26 | 2013-09-26 | Capacitive touch screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103472969A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103777835A (en) * | 2014-02-11 | 2014-05-07 | 苏州胜利光学玻璃有限公司 | Double-sided conductive transparent film |
| CN104636019A (en) * | 2015-03-17 | 2015-05-20 | 蚌埠玻璃工业设计研究院 | Capacitive touch screen with double-conductive-layer structure |
| CN105138201A (en) * | 2015-09-08 | 2015-12-09 | 昆山龙腾光电有限公司 | Capacitive touch display panel |
| WO2019024217A1 (en) * | 2017-08-02 | 2019-02-07 | 意力(广州)电子科技有限公司 | Conductive film and touch screen |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101187752A (en) * | 2007-12-06 | 2008-05-28 | 京东方科技集团股份有限公司 | Color filter, manufacturing method thereof, and liquid crystal display device |
| CN102722302A (en) * | 2012-05-29 | 2012-10-10 | 格林精密部件（惠州）有限公司 | Capacitive touch-control screen with single-layer Film double-faced ITO (indium tin oxide) structure |
| US20130063371A1 (en) * | 2011-09-08 | 2013-03-14 | Samsung Electro-Mechanics Co., Ltd. | Touch panel |
| CN103235660A (en) * | 2013-04-12 | 2013-08-07 | 深圳欧菲光科技股份有限公司 | Double-layer touch screen and preparation method thereof |
| CN203465707U (en) * | 2013-09-26 | 2014-03-05 | 苏州胜利光学玻璃有限公司 | Capacitive touch screen |
-
2013
- 2013-09-26 CN CN2013104449072A patent/CN103472969A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101187752A (en) * | 2007-12-06 | 2008-05-28 | 京东方科技集团股份有限公司 | Color filter, manufacturing method thereof, and liquid crystal display device |
| US20130063371A1 (en) * | 2011-09-08 | 2013-03-14 | Samsung Electro-Mechanics Co., Ltd. | Touch panel |
| CN102722302A (en) * | 2012-05-29 | 2012-10-10 | 格林精密部件（惠州）有限公司 | Capacitive touch-control screen with single-layer Film double-faced ITO (indium tin oxide) structure |
| CN103235660A (en) * | 2013-04-12 | 2013-08-07 | 深圳欧菲光科技股份有限公司 | Double-layer touch screen and preparation method thereof |
| CN203465707U (en) * | 2013-09-26 | 2014-03-05 | 苏州胜利光学玻璃有限公司 | Capacitive touch screen |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103777835A (en) * | 2014-02-11 | 2014-05-07 | 苏州胜利光学玻璃有限公司 | Double-sided conductive transparent film |
| CN104636019A (en) * | 2015-03-17 | 2015-05-20 | 蚌埠玻璃工业设计研究院 | Capacitive touch screen with double-conductive-layer structure |
| CN105138201A (en) * | 2015-09-08 | 2015-12-09 | 昆山龙腾光电有限公司 | Capacitive touch display panel |
| WO2019024217A1 (en) * | 2017-08-02 | 2019-02-07 | 意力(广州)电子科技有限公司 | Conductive film and touch screen |
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20131225 |