CN201222242Y - Capacitance touch screen - Google Patents
Capacitance touch screen Download PDFInfo
- Publication number
- CN201222242Y CN201222242Y CNU2008200948112U CN200820094811U CN201222242Y CN 201222242 Y CN201222242 Y CN 201222242Y CN U2008200948112 U CNU2008200948112 U CN U2008200948112U CN 200820094811 U CN200820094811 U CN 200820094811U CN 201222242 Y CN201222242 Y CN 201222242Y
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- China
- Prior art keywords
- touch screen
- circuit
- capacitive touch
- utility
- glass substrate
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- Expired - Lifetime
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Abstract
The utility model discloses a capacitive type touch screen, which comprises a glass base plate, two circuit layers which are respectively arranged on the front surface and the back surface of the glass base plate, and protective layers which are respectively adhered on the surfaces of the two circuit layers with binder. The utility model has simple structure and easy making, can effectively protect conductive lines and glass from being damage easily, avoids the picture distortion, greatly increases the light transmission and abrasion resistance of the capacitive type touch screen, furthermore other components also can normally work with a damaged C T P. The capacitive touch screen realizes the multi-point touch-control function through combining with the control circuit of the touch screen.
Description
Technical field
The utility model relates to touch screen technology, relates in particular to a kind of capacitive touch screen.
Background technology
Capacitive touch screen is a kind of touch-screen that comes the touch sensitive signal by electrode and the combination of people's bulk properties.After touch-screen four limits all plate long and narrow electrode, in electric conductor, form a low-voltage AC field.When human body (finger) touch screen, because human body electric field action, can form a coupling capacitance between finger and conductor layer, the electric current that four limit electrodes produce can flow to the contact, be directly proportional with the distance of pointing electrode and electric current is strong and weak, be positioned at ratio and power that controller after the touch screen just can calculate electric current, accurately calculate touch point position.
The structure of capacitive touch screen of the prior art mainly is divided into four layers, is respectively: upper strata cover glass, the second layer are coated with the electro-conductive glass of ITO, the 3rd layer of electro-conductive glass and lower floor's cover glass that is coated with ITO.The glass of double shielding up and down of capacitive touch screen not only can thoroughly be protected conductor and inductor; can prevent effectively that more the external environment factor from impacting touch-screen; even if screen speckles with filth, dust or oil stain; capacitive touch screen still can accurately be calculated touch location, and its transmittance and sharpness all are better than four-wire resistance type touch screen.
But the shortcoming of this capacitive touch screen is a complex structure, thereby after causing the easy damage of aliasing, complex manufacturing process and its film to cause CTP invalid easily, other components and parts also can't operate as normal.
The utility model content
Technical problem to be solved in the utility model is: a kind of capacitive touch screen is provided, and described touch screen structure is simple, pattern precision is high, be easy to make, easy damaged and under the situation of CTP breakage, other components and parts also can operate as normal not.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of capacitive touch screen includes:
One glass substrate;
Be separately positioned on two circuit layers on positive and negative two surfaces of described glass substrate;
Be bonded in the protective seam on described two circuit layer surfaces respectively with bonding agent.
The beneficial effects of the utility model are:
Embodiment of the present utility model is by adopting two-sided electro-conductive glass and double-layer PET membrane structure; simple in structure, be easy to make; and conducting wire and glass have been protected effectively; not easy damaged, avoided aliasing, improved light transmission and the anti-loss rate of capacitive touch screen greatly; and under the situation of CTP breakage, other components and parts also can operate as normal.Also realized function of multi-spot touch in conjunction with touch screen control circuit.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Description of drawings
Fig. 1 is the sectional view of an embodiment side of the utility model.
Fig. 2 is the circuit layer synoptic diagram that is arranged in the glass substrate front among embodiment of the utility model.
Fig. 3 is the circuit layer synoptic diagram that is arranged in the glass substrate reverse side among embodiment of the utility model.
Embodiment
Describe an embodiment of the present utility model in detail below with reference to Fig. 1.As shown in the figure, present embodiment mainly includes:
One glass substrate 1;
Be separately positioned on two circuit layers 2 on positive and negative two surfaces of described glass substrate;
Be fitted in the protective seam 4 on described two circuit layer surfaces respectively with bonding agent 3.
During specific implementation, glass substrate 1 is double nano indium tin metal oxide (Indium Tin Oxides, ITO) face electro-conductive glass, circuit layer 2 directly is arranged on positive and negative two surfaces of glass substrate 1, and described protective seam is polyethylene terephthalate (Polythylene terephthalate, PET) film; Described bonding agent generally adopts the optics adhesive tape.
In the capacitive touch screen of the prior art, two circuit layer is being arranged on the layer glass substrate respectively, and utilizes air to carry out work, complex structure for conducting medium with layer glass up and down as protective seam; Present embodiment then is separately positioned on two circuit layers on the tow sides of one deck glass substrate, and the PET film that utilization can be anti-scratch carries out work for conducting medium.Thereby the advantage of present embodiment mainly embodies by two aspects:
On the one hand,, form two-sided electro-conductive glass structure, improved the touch sensitivity of low resistance glass widely because two circuit layers 2 are arranged on one deck glass substrate 1.
On the other hand, after described two-layer anti-scratch PET film 4 is fitted by optics adhesive tape 3 and described glass substrate 1, form an integral body with glass substrate 1, not only protected described two circuit layers 2 the conducting wire, make glass substrate 1 not fragile, from having solved because of its surface deformation in essence, having scratched, stab etc. former thereby cause its resistance to become big, linear deflection and malfunctioning problem, also guaranteed the integral thickness of touch-screen, also (Computer To Plate CTP) provides specific inductive capacity standard, stable for the direct making sheet of computing machine; And simple in structure because of it, a little less than optical interference, scattering, the refraction, improved the light transmission of touch-screen and the permanance of CTP greatly because of pattern distortion problem, the while of multilayer film or glass combination generation thereby improved common capacitive touch screen greatly; Even and under the situation of CTP breakage, other components and parts also can operate as normal, is not subjected to the influence of CTP breakage.
Describe two circuit layers 2 of present embodiment and the touch screen control circuit that connects thereof below in detail.
The gain and loss the same with common capacitive touch screen, that the circuit layer 2 of present embodiment is adopted electric current unanimously realizes the output of signal, and calculates, locatees according to the gain and loss of described electric current, determines the position that touches.Referring to figs. 2 and 3, be arranged in glass substrate 1 double-edged two circuit layers 2 respectively and mainly form by a plurality of touch control units that are arranged.Wherein, each touch control unit all has independently lead-in wire, and (Flexible Printed Circuit FPC) 5 draws, and the pin of flexible printer circuit 5 condenser type digital converter then direct and in the touch screen control circuit is connected by flexible printer circuit.In addition, realize following multi-point touch function consideration for cooperating, the button in the circuit layer 2 all adopts orthoscopic to arrange, thereby the distribution of resistance of whole touch screen is quantized accurately.
During specific implementation, the condenser type digital converter in the described touch screen control circuit adopts AD7412 condenser type digital converter, and AD7412 changes the capacitance signal that described circuit layer produces by its CIN pin.Because the programmability of AD7412, it can be provided with various inductor configurations, for example the roller of menu etc. is ejected in touch-control scroll bar, driving, the button that combined circuit layer 2 cathetus formula are arranged, very effective control touches the signal that produces, thereby has realized the irrealizable multi-point touch function of common capacitive touch screen.
The above is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also are considered as protection domain of the present utility model.
Claims (5)
1, a kind of capacitive touch screen is characterized in that, described touch-screen includes:
One glass substrate;
Be separately positioned on two circuit layers on positive and negative two surfaces of described glass substrate;
Be bonded in the protective seam on described two circuit layer surfaces respectively with bonding agent.
2, capacitive touch screen as claimed in claim 1 is characterized in that, described protective seam is the polyethylene terephthalate film.
3, capacitive touch screen as claimed in claim 1 or 2 is characterized in that, described bonding agent is the optics adhesive tape.
4, capacitive touch screen as claimed in claim 1 is characterized in that, described circuit layer includes a plurality of touch control units that are arranged, and each touch control unit is guided on the condenser type digital converter in the touch screen control circuit by flexible printer circuit.
5, capacitive touch screen as claimed in claim 1 is characterised in that, the ordered state of button is that orthoscopic is arranged in the described circuit layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200948112U CN201222242Y (en) | 2008-06-11 | 2008-06-11 | Capacitance touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200948112U CN201222242Y (en) | 2008-06-11 | 2008-06-11 | Capacitance touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201222242Y true CN201222242Y (en) | 2009-04-15 |
Family
ID=40575745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200948112U Expired - Lifetime CN201222242Y (en) | 2008-06-11 | 2008-06-11 | Capacitance touch screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201222242Y (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102063235A (en) * | 2010-12-28 | 2011-05-18 | 苏州超联光电有限公司 | Capacitive screen assembly and preparation method thereof |
| CN102200865A (en) * | 2010-03-25 | 2011-09-28 | 柏腾科技股份有限公司 | Plastic shell with functions of electromagnetic interference prevention and capacitance track pad and preparation method thereof |
| CN102207805A (en) * | 2011-05-25 | 2011-10-05 | 赣州市德普特科技有限公司 | Capacitive touch screen and manufacture method thereof |
| CN102375626A (en) * | 2010-08-13 | 2012-03-14 | 信利光电(汕尾)有限公司 | Touch control structure for capacitance type touch screen and manufacture method thereof |
| CN102402355A (en) * | 2010-09-08 | 2012-04-04 | 三星电机株式会社 | Capacitive touch screen |
| CN102402338A (en) * | 2011-12-27 | 2012-04-04 | 天津美泰真空技术有限公司 | Touch screen panel and method for manufacturing same |
| CN102495704A (en) * | 2011-12-06 | 2012-06-13 | 天马微电子股份有限公司 | Capacitive touch screen and touch terminal |
| CN102681740A (en) * | 2012-05-16 | 2012-09-19 | 金百芳 | Capacitive touch screen plate device |
| CN101995990B (en) * | 2009-08-26 | 2013-01-09 | 群康科技(深圳)有限公司 | Touch panel and positioning method of touch points of same |
| CN103376957A (en) * | 2012-04-18 | 2013-10-30 | 赣州市德普特科技有限公司 | Capacitive touch screen and manufacturing method thereof |
| TWI423103B (en) * | 2010-03-19 | 2014-01-11 | Paragon Technologies | Molded case with anti - electromagnetic interference and capacitive track plate and its preparation method |
| CN107621907A (en) * | 2017-10-18 | 2018-01-23 | 广东趣点智能科技有限公司 | A kind of touch-screen route protection technique |
-
2008
- 2008-06-11 CN CNU2008200948112U patent/CN201222242Y/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995990B (en) * | 2009-08-26 | 2013-01-09 | 群康科技(深圳)有限公司 | Touch panel and positioning method of touch points of same |
| US8681118B2 (en) | 2009-08-26 | 2014-03-25 | Chimei Innolux Corporation | Touch panel and a method of locating a touch point of the same |
| TWI423103B (en) * | 2010-03-19 | 2014-01-11 | Paragon Technologies | Molded case with anti - electromagnetic interference and capacitive track plate and its preparation method |
| CN102200865A (en) * | 2010-03-25 | 2011-09-28 | 柏腾科技股份有限公司 | Plastic shell with functions of electromagnetic interference prevention and capacitance track pad and preparation method thereof |
| CN102200865B (en) * | 2010-03-25 | 2013-06-12 | 柏腾科技股份有限公司 | Plastic shell with functions of electromagnetic interference prevention and capacitance track pad and preparation method thereof |
| CN102375626A (en) * | 2010-08-13 | 2012-03-14 | 信利光电(汕尾)有限公司 | Touch control structure for capacitance type touch screen and manufacture method thereof |
| CN102402355A (en) * | 2010-09-08 | 2012-04-04 | 三星电机株式会社 | Capacitive touch screen |
| CN102063235A (en) * | 2010-12-28 | 2011-05-18 | 苏州超联光电有限公司 | Capacitive screen assembly and preparation method thereof |
| CN102207805A (en) * | 2011-05-25 | 2011-10-05 | 赣州市德普特科技有限公司 | Capacitive touch screen and manufacture method thereof |
| CN102495704A (en) * | 2011-12-06 | 2012-06-13 | 天马微电子股份有限公司 | Capacitive touch screen and touch terminal |
| CN102402338A (en) * | 2011-12-27 | 2012-04-04 | 天津美泰真空技术有限公司 | Touch screen panel and method for manufacturing same |
| CN102402338B (en) * | 2011-12-27 | 2013-12-18 | 天津美泰真空技术有限公司 | Touch screen panel and method for manufacturing same |
| CN103376957A (en) * | 2012-04-18 | 2013-10-30 | 赣州市德普特科技有限公司 | Capacitive touch screen and manufacturing method thereof |
| CN102681740A (en) * | 2012-05-16 | 2012-09-19 | 金百芳 | Capacitive touch screen plate device |
| CN107621907A (en) * | 2017-10-18 | 2018-01-23 | 广东趣点智能科技有限公司 | A kind of touch-screen route protection technique |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Ganzhou DPT Technology Co., Ltd. Assignor: Shenzhen DPT-touch Co., Ltd. Contract record no.: 2011360000014 Denomination of utility model: Capacitance type touch screen and manufacturing method thereof Granted publication date: 20090415 License type: Exclusive License Record date: 20110223 |
|
| ASS | Succession or assignment of patent right |
Owner name: GANZHOU DPT TECHNOLOGY CO.,LTD. Free format text: FORMER OWNER: SHENZHEN DPT-TOUCH CO., LTD. Effective date: 20130710 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 518000 SHENZHEN, GUANGDONG PROVINCE TO: 341000 GANZHOU, JIANGXI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130710 Address after: 341000, A8-A10 section, west section of Dragon Ridge Industrial Park, Nankang City, Jiangxi, Ganzhou Patentee after: Ganzhou DPT Technology Co., Ltd. Address before: Baoan District Shenzhen City manhole town of Guangdong Province in 518000 and a Village West Industrial jinmeiwei first industrial park 5 Building 4 floor Patentee before: Shenzhen DPT-touch Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20090415 |
|
| CX01 | Expiry of patent term |