CN102221948A - Capacitive touch screen - Google Patents
Capacitive touch screen Download PDFInfo
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- CN102221948A CN102221948A CN2011101216828A CN201110121682A CN102221948A CN 102221948 A CN102221948 A CN 102221948A CN 2011101216828 A CN2011101216828 A CN 2011101216828A CN 201110121682 A CN201110121682 A CN 201110121682A CN 102221948 A CN102221948 A CN 102221948A
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Abstract
The invention discloses a capacitive touch screen, which comprises multilayer composite board structure and a touch integrated circuit (IC), wherein the multilayer composite board structure consists of a panel layer, a work layer and a shielding layer; the touch IC is electrically connected with the work layer; the panel layer is made from glass or other high polymer materials, and the lower surface of the panel layer can be circumferentially provided with a label layer; the work layer is an indium tin oxide (ITO) circuit layer, and is directly laid on the lower surface of the panel layer; the shielding layer is positioned below the work layer, and comprises the ITO circuit layer and a thin film layer; the thin film layer is positioned below the ITO circuit layer, and is used for laying the ITO circuit layer; and the work layer is bonded with the shielding layer by adopting an optical scotch tape. The ITO circuit layer of the work layer is directly laid on the lower surface of the panel layer, so the capacitive touch screen is thinner, lighter and low in cost, and improves the touch sensitivity.
Description
Technical field
The present invention relates to the touch screen technology field, relate in particular to a kind of capacitance touch screen.
Background technology
The capacitance technology touch-screen is to utilize the induction current of human body to carry out work.The MULTILAYER COMPOSITE plate structure of a kind of capacitive touch screen that uses as shown in Figure 1 at present, comprise panel layer 1, working lining 2 and screen layer 3, be provided with bonding coat 4 between panel layer 1 and the working lining 2, be provided with bonding coat 5 between working lining 2 and the screen layer 3, the material that bonding coat 4, bonding coat 5 adopt is transparent optical cement (OCA).Described panel layer 1 is glass or other transparent high molecular polymers.Described working lining 2 comprises the thin layer 21 bonding with panel layer 1, and the ITO line layer 22 that is layed in these thin layer 21 belows, and described line layer is drawn four electrodes on 22 4 angles, is connected to touch-control IC (scheming not shown), in order to the identification touch point position.Described screen layer 3 comprises an ITO line layer 31, and the thin layer 32 that is used to lay this line layer, and described ITO line layer 31 is used for shielding static to guarantee the capacitance touch screen good working environment.When finger touch was on panel layer 1, because people's bulk electric field, ITO line layer 22 surfaces of user and touch-screen formed a coupling capacitance, and for high-frequency current, electric capacity is conductor, so finger siphons away a very little electric current from contact point.This electric current divides the electrode on from touch-screen working lining 2 four jiaos and flows out, and the electric current of these four electrodes of flowing through is directly proportional with the distance of pointing four jiaos, and touch-control IC controller passes through the accurate Calculation to these four current ratios, draws touch point position.
Because the design of touch panel target is more frivolous, low-cost, high sensitivity, so the capacitance touch screen of said structure still has improved space.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of more frivolous, more low-cost, more highly sensitive capacitance touch screen.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of capacitance touch screen comprises the MULTILAYER COMPOSITE plate structure of being made up of panel layer, working lining, screen layer, and the touch-control IC that electrically connects with described working lining.Described panel layer material is glass or other transparent high molecular polymers, and described working lining is one deck ITO circuit, directly is layed in the lower surface of described panel layer.Described screen layer comprises an ITO line layer, and is positioned at this ITO line layer below, is used for laying the thin layer of this ITO line layer.Adopt the optical clear glue bond between described working lining and the described screen layer.
As required, can lay label layer on panel layer lower surface week edge.
The material of described thin layer is the high score subclass material that high transmission rate, photic or thermic solidify.
Compared with prior art, useful technique effect of the present invention is:
Nearer as the finger distance that the ITO line layer and the panel layer upper surface of working lining touches, the touch-control sensitivity that has improved capacitance touch screen; Owing to saved thin film layer and optical cement bonding coat, save material and technology, make touch-screen more frivolous, more low-cost.
Description of drawings
Fig. 1 is the sectional schematic diagram of the multilayer composite sheet of background technology capacitance touch screen;
Fig. 2 is the sectional schematic diagram of the multilayer composite sheet of capacitance touch screen of the present invention;
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Fig. 2 is the sectional schematic diagram of the multilayer composite sheet of present embodiment capacitance touch screen.Described capacitance touch screen comprises the MULTILAYER COMPOSITE plate structure of being made up of panel layer 10, working lining 20, screen layer 30, and the touch-control IC (scheming not shown) that electrically connects with described working lining.Described panel layer 10 materials are glass or other transparent high molecular polymers, and described working lining 20 is one deck ITO circuit, directly is layed in the lower surface of described panel layer 10.Described screen layer 30 comprises an ITO line layer 301, and is positioned at this ITO line layer below, is used for laying the thin layer 302 of this ITO line layer.Adopt optical clear glue-line 40 bonding between described working lining 20 and the described screen layer 30.
The design object of capacitance touch screen is the inductance capacitance that increases between finger and the working lining, the ITO circuit of working lining 20 among the present invention is owing to directly be layed in the lower surface of panel layer 10, with respect to prior art, reduced the anode-cathode distance between finger and the working lining, because capacitance size and anode-cathode distance are inversely proportional to, so capacitance touch screen of the present invention has reached the purpose that increases described inductance capacitance, can effectively improve touch-control sensitivity.
With respect to prior art, capacitance touch screen of the present invention has been saved thin film and one deck optical cement, has reduced cost.
The ITO circuit of described working lining 20 is layed in described panel layer 10 lower surfaces by following technology: after the simple glass intensive treatment, method with magnetron sputtering plates one deck ITO on its surface, on this layer ITO, etch the induction electrode and the induction cabling of directions X and Y direction, promptly form described ITO circuit.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. a capacitance touch screen comprises the composite plate structure of being made up of panel layer, working lining, screen layer, and the touch-control IC that electrically connects with described working lining; Described panel layer material is glass or other transparent high molecular polymers; Described working lining is one deck ITO circuit, is positioned at described panel layer below; Described screen layer comprises an ITO line layer, and is positioned at this ITO line layer below, is used for laying the thin layer of this ITO line layer; Adopt the optical clear glue bond between described working lining and the described screen layer; It is characterized in that: the ITO circuit of described working lining directly is layed in the lower surface of described panel layer.
2. capacitance touch screen according to claim 1 is characterized in that: described panel layer lower surface week is along being equipped with label layer.
3. capacitance touch screen according to claim 1 is characterized in that: the material of described thin layer is the high score subclass material that high transmission rate, photic or thermic solidify.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101216828A CN102221948A (en) | 2011-05-11 | 2011-05-11 | Capacitive touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101216828A CN102221948A (en) | 2011-05-11 | 2011-05-11 | Capacitive touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102221948A true CN102221948A (en) | 2011-10-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101216828A Pending CN102221948A (en) | 2011-05-11 | 2011-05-11 | Capacitive touch screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102221948A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102681741A (en) * | 2012-05-15 | 2012-09-19 | 格林精密部件（惠州）有限公司 | Single layer Film double layer ITO (indium tin oxide) structure capacitor touch control screen |
| 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 |
| CN103914202A (en) * | 2014-04-24 | 2014-07-09 | 深圳秋田微电子有限公司 | Capacitive touch screen structure suitable for two-layer cabling |
| CN106033269A (en) * | 2015-03-16 | 2016-10-19 | 宏碁股份有限公司 | Touch control module and manufacturing method thereof, and smartwatch |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200634855A (en) * | 2004-12-30 | 2006-10-01 | 3M Innovative Properties Co | Conductive polymer layer articles and method |
| CN101196630A (en) * | 2006-12-05 | 2008-06-11 | Smk株式会社 | Touch panel |
| TW200945394A (en) * | 2008-04-23 | 2009-11-01 | Camma Optical Co Ltd | Touch panel |
| CN101699383A (en) * | 2009-10-13 | 2010-04-28 | 剑度投资有限公司 | Manufacturing process of capacitive touch panel |
| CN101943963A (en) * | 2009-07-08 | 2011-01-12 | 群康科技(深圳)有限公司 | Conducting plate and touch screen using same |
-
2011
- 2011-05-11 CN CN2011101216828A patent/CN102221948A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200634855A (en) * | 2004-12-30 | 2006-10-01 | 3M Innovative Properties Co | Conductive polymer layer articles and method |
| CN101196630A (en) * | 2006-12-05 | 2008-06-11 | Smk株式会社 | Touch panel |
| TW200945394A (en) * | 2008-04-23 | 2009-11-01 | Camma Optical Co Ltd | Touch panel |
| CN101943963A (en) * | 2009-07-08 | 2011-01-12 | 群康科技(深圳)有限公司 | Conducting plate and touch screen using same |
| CN101699383A (en) * | 2009-10-13 | 2010-04-28 | 剑度投资有限公司 | Manufacturing process of capacitive touch panel |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102681741A (en) * | 2012-05-15 | 2012-09-19 | 格林精密部件（惠州）有限公司 | Single layer Film double layer ITO (indium tin oxide) structure capacitor touch control screen |
| 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 |
| CN103914202A (en) * | 2014-04-24 | 2014-07-09 | 深圳秋田微电子有限公司 | Capacitive touch screen structure suitable for two-layer cabling |
| CN106033269A (en) * | 2015-03-16 | 2016-10-19 | 宏碁股份有限公司 | Touch control module and manufacturing method thereof, and smartwatch |
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| C06 | Publication | ||
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| DD01 | Delivery of document by public notice |
Addressee: Shenzhen Junda photoelectric Co. Ltd. Wang Ling Document name: Notification of Passing Examination on Formalities |
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| DD01 | Delivery of document by public notice |
Addressee: Shenzhen Junda Optoelectronics Co., Ltd. Document name: Notification of an Office Action |
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| DD01 | Delivery of document by public notice |
Addressee: Shenzhen Junda Optoelectronics Co., Ltd. Document name: Notification that Application Deemed to be Withdrawn |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111019 |