CN103294318A - Capacitance touch panel utilizing traditional resistive films - Google Patents
Capacitance touch panel utilizing traditional resistive films Download PDFInfo
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- CN103294318A CN103294318A CN2013102227551A CN201310222755A CN103294318A CN 103294318 A CN103294318 A CN 103294318A CN 2013102227551 A CN2013102227551 A CN 2013102227551A CN 201310222755 A CN201310222755 A CN 201310222755A CN 103294318 A CN103294318 A CN 103294318A
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Abstract
The invention discloses a capacitance touch panel utilizing traditional resistive films, and belongs to the field of capacitance touch panels. The capacitance touch panel comprises a display screen and a nanometer indium tin metallic oxide ITO sensor, wherein the display screen is used for displaying images, and the ITO sensor is arranged on the display screen and used for sensing a touch control point. A film plated with ITO on the whole surface is processed into an ITO film with specific ITO graphs through a printing or etching process by means of the ITO sensor, the ITO sensor is made of the resistive films which are high surface resistance value resistive films, and the resistance value of the high surface resistance value resistive films is larger than or equal to 270 ohms. The ITO sensor is provided with a cover lens protecting the ITO sensor, and the cover lens and the ITO sensor are adhered together through optical double faced adhesive tape. The capacitance touch panel obviously lowers cost of raw material, greatly improves optical performance of products, and brings benefits to enterprises.
Description
Technical field
The present invention relates to capacitive touch screen, be specifically related to a kind of capacitive touch screen that adopts the traditional resistor film.
Background technology
Touch screen is for the compound touch-screen on the electronic products such as mobile phone, e-book, digital camera, and wherein capacitance type touch control screen is the most frequently used a kind of in the touch screen.
Capacitance type touch control screen is to utilize the electric current induction of human body to carry out work, capacitance type touch control screen is four layers of compound glass screen normally, the inside surface of glass screen and interlayer respectively scribble one deck ITO(plated film electro-conductive glass), outermost layer is skim silicon soil glassivation, the ITO coating is as workplace, draw four electrodes on four angles, internal layer ITO is that screen layer is to guarantee good working environment; When user's finger touch is on capacitance type touch control screen, because people's bulk electric field, user and capacitance touching control screen surfaces form with a coupling capacitance (for high-frequency current, electric capacity can be considered as conductor), so finger siphons away a very little electric current from the touch point of capacitance touching control screen surfaces, this electric current divides the electrode on from capacitance type touch control screen four jiaos and flows out; The electric current of these four electrodes of flowing through is directly proportional to four jiaos distance with finger, and controller draws touch point position by the accurate Calculation to these four current ratios.
Present existing capacitance type touch control screen as shown in Figure 1, generally include following main element: the ITO sensor 12 that utilizes capactive film to make, cover plate Cover Lens 13 to 12 its protective effects of ITO sensor, the optics double faced adhesive tape 14 that is used for bonding ITO sensor 12 and Cover Lens 13, be used for calculating touch point and repay the flexible PCB 15 of giving processor, and the display screen 11 that is used for showing image; Existing capacitance type touch control screen because its resistive layer is thicker, causes etching efficiency low owing to adopt capactive film as the base material of ITO figure, and cost is too high, and transmitance promotes difficulty.
Application number is that 201220280827 Chinese patent discloses the utility model patent that name is called " a kind of capacitance touch screen ", mainly comprise glass inductive layer, capacitive sensing device, the capacitive sensing device is arranged on the glassy layer below, the two adopts the transparent optical glue bond, described capacitive sensing device comprises the PET thin layer and is arranged on ITO cabling on the PET thin layer, draw by the silk-screen elargol at ITO cabling the two poles of the earth, and the control chip communication on realization and the FPC adopts one deck ITO film as touch sensor; The utility model patent has the following disadvantages:
1, the capactive film that utilizes the bottom surface resistance is as touch sensor, and resistive layer is thicker, causes etching efficiency low, and the cost cost is too big;
2, ITO film conductive layer thickness is thicker, influences transmittance, thus the whole optical property of influence.
Application number is to point out that conductive layer comprises tin indium oxide in the patent of invention of US2010139955A1, and conductive layer has the surface resistivity less than 20 ohm, utilize the capactive film of bottom surface resistance as touch panel sensor in the making of the patterned substrate of this touch screen sensor assembly, resistive layer is thicker, cause etching efficiency low, the cost cost is too big, influences transmittance simultaneously, thus the whole optical property of influence.
Summary of the invention
In order to overcome the above problems; the invention provides a kind of capacitive touch screen that adopts the traditional resistor film; comprise for the display screen that shows image; be arranged on the described display screen; the nano indium tin metal oxide ITO sensor that is used for the sensing touch point; described ITO sensor is by printing or etch process; the ITO Film that has specific ITO figure that the Film that is coated with whole ITO is processed into; described ITO sensor is made by resistive film; described resistive film is high face resistance resistive film; the resistance of described high face resistance resistive film is more than or equal to 270 ohm; described ITO sensor is provided with the cover plate Cover Lens for the protection of described ITO sensor, and described Cover Lens and ITO sensor are bonded together by the optics double faced adhesive tape.
Wherein, described capacitive touch screen also comprises, links to each other with described ITO sensor, is used for calculating touch point and repays the flexible PCB of giving processor.
Wherein, described Cover Lens is made by tempered glass.
The capacitive touch screen of the employing traditional resistor film that the embodiment of the invention provides, it utilizes high face resistance (more than or equal to 270 ohm) resistive film to replace the capactive film of low resistance, as the base material of making the ITO figure, break the characteristics that the selection of traditional capacitance screen is comparatively limited to, reduced raw-material cost.
Further, the capacitive touch screen of employing traditional resistor film provided by the invention, its ITO Film etch process is identical with the capactive film of low resistance, but because its conductive layer is thinner, so etching efficiency is greatly improved, processing cost is reduced.
Further, the capacitive touch screen of employing traditional resistor film provided by the invention, because its resistive film conductive layer thickness that adopts reduces, transmittance promotes, and the optical property of product integral body is better.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is existing capacitive touch screen structural representation;
Fig. 2 is the capacitive touch screen structural representation of the employing traditional resistor film that provides of the embodiment of the invention;
Fig. 3 is the decomposing schematic representation of Cover Lens, optics double faced adhesive tape, ITO sensor and display screen in the capacitive touch screen of the employing traditional resistor film that provides of the embodiment of the invention.
Embodiment
The capacitive touch screen that the embodiment of the invention provides has reduced the cost of raw material significantly, has promoted the optical property of product greatly, for enterprise has brought benefit.
Below in conjunction with the accompanying drawing among the present invention, the technical scheme among the present invention is clearly and completely described, obviously, described only is the present invention's part embodiment, rather than whole embodiment; Based on the embodiment among the present invention, the every other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work belongs to the scope of protection of the invention.
Be respectively the capacitive touch screen structural representation of the employing traditional resistor film that the embodiment of the invention provides and adopt the decomposing schematic representation of Cover Lens, optics double faced adhesive tape, ITO sensor and display screen in the capacitive touch screen of traditional resistor film referring to Fig. 2, Fig. 3.The capacitive touch screen of employing traditional resistor film provided by the invention comprises, display screen 1, ITO sensor 2, Cover Lens 3, bonding shown in optics double faced adhesive tape 4 and the flexible PCB 5 of Cover Lens 3 and ITO sensor 2.
Described ITO sensor 2 is made by resistive film, described resistive film is high face resistance resistive film, the resistance of described high face resistance resistive film is more than or equal to 270 ohm, low resistance capactive film before having replaced is as the base material of making the ITO figure, break the characteristics that the selection of traditional capacitance screen is comparatively limited to, greatly reduced raw-material cost.
Further, the capacitive touch screen of the described employing traditional resistor film that the embodiment of the invention provides also comprises flexible PCB 5, and this flexible PCB 5 links to each other with described ITO sensor 2, is used for calculating touch point and repayment to processor.
By above description as can be known, the capacitive touch screen of the described employing resistive film that provides of the embodiment of the invention has the following advantages at least:
(1) cost of raw material reduces; Existing capacitive touch screen technology is to utilize the capactive film of low resistance as the base material of ITO figure, and etching efficiency is low, and cost is high; The capacitive touch screen of employing resistive film provided by the invention is to utilize high face resistance (more than or equal to 270 ohm) resistive film as the base material of ITO figure, and starting material and processing cost all have remarkable decline; Simultaneously the ITO Film technology among the present invention is identical with the capactive film of low resistance, but conductive layer is thinner, thus etching efficiency promoted greatly, thereby processing cost is reduced.
(2) lifting of product optical property; Existing capacitive touch screen adopts the thicker low resistance capactive film of resistive layer, and what the capacitive touch screen of employing traditional resistor film provided by the invention adopted is the thinner high resistance measurement film of resistive layer, and transmittance promotes, and the optical property of product integral body is better.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention does, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (3)
1. capacitive touch screen that adopts the traditional resistor film, comprise for the display screen that shows image, be arranged on the described display screen, the nano indium tin metal oxide ITO sensor that is used for the sensing touch point, described ITO sensor is by printing or etch process, the ITO Film that has specific ITO figure that the Film that is coated with whole ITO is processed into, it is characterized in that, described ITO sensor is made by resistive film, described resistive film is high face resistance resistive film, and the resistance of described high face resistance resistive film is more than or equal to 270 ohm;
Described ITO sensor is provided with the cover plate Cover Lens for the protection of described ITO sensor, and described Cover Lens and ITO sensor are bonded together by the optics double faced adhesive tape.
2. a kind of capacitive touch screen that adopts the traditional resistor film according to claim 1 is characterized in that, described capacitive touch screen also comprises, links to each other with described ITO sensor, is used for calculating touch point and repays the flexible PCB of giving processor.
3. a kind of capacitive touch screen that adopts the traditional resistor film according to claim 1 and 2 is characterized in that, described Cover Lens is made by tempered glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102227551A CN103294318A (en) | 2013-06-06 | 2013-06-06 | Capacitance touch panel utilizing traditional resistive films |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013102227551A CN103294318A (en) | 2013-06-06 | 2013-06-06 | Capacitance touch panel utilizing traditional resistive films |
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| CN103294318A true CN103294318A (en) | 2013-09-11 |
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| CN2013102227551A Pending CN103294318A (en) | 2013-06-06 | 2013-06-06 | Capacitance touch panel utilizing traditional resistive films |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103699270A (en) * | 2013-12-31 | 2014-04-02 | 广州视声电子实业有限公司 | Manufacturing method of touch display screen |
| CN103753938A (en) * | 2014-01-14 | 2014-04-30 | 深圳秋田微电子有限公司 | Full-lamination module and manufacturing process thereof |
Citations (5)
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| CN101571778A (en) * | 2009-06-15 | 2009-11-04 | 南京华睿川电子科技有限公司 | Projected capacitive touch screen |
| US20110012845A1 (en) * | 2009-07-20 | 2011-01-20 | Rothkopf Fletcher R | Touch sensor structures for displays |
| CN102750061A (en) * | 2012-06-20 | 2012-10-24 | 格林精密部件（惠州）有限公司 | Capacitive touch screen based on carbon nanotube sensor |
| CN202548814U (en) * | 2012-04-26 | 2012-11-21 | 格林精密部件（惠州）有限公司 | Capacitive touch-control screen with single-layer Film structure |
| CN203299795U (en) * | 2013-06-06 | 2013-11-20 | 格林精密部件（惠州）有限公司 | Capacitive touch screen using traditional resistive film |
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2013
- 2013-06-06 CN CN2013102227551A patent/CN103294318A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571778A (en) * | 2009-06-15 | 2009-11-04 | 南京华睿川电子科技有限公司 | Projected capacitive touch screen |
| US20110012845A1 (en) * | 2009-07-20 | 2011-01-20 | Rothkopf Fletcher R | Touch sensor structures for displays |
| CN202548814U (en) * | 2012-04-26 | 2012-11-21 | 格林精密部件（惠州）有限公司 | Capacitive touch-control screen with single-layer Film structure |
| CN102750061A (en) * | 2012-06-20 | 2012-10-24 | 格林精密部件（惠州）有限公司 | Capacitive touch screen based on carbon nanotube sensor |
| CN203299795U (en) * | 2013-06-06 | 2013-11-20 | 格林精密部件（惠州）有限公司 | Capacitive touch screen using traditional resistive film |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103699270A (en) * | 2013-12-31 | 2014-04-02 | 广州视声电子实业有限公司 | Manufacturing method of touch display screen |
| CN103753938A (en) * | 2014-01-14 | 2014-04-30 | 深圳秋田微电子有限公司 | Full-lamination module and manufacturing process thereof |
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Application publication date: 20130911 |
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