CN202093499U - Capacitive touch screen - Google Patents
Capacitive touch screen Download PDFInfo
- Publication number
- CN202093499U CN202093499U CN201120171603XU CN201120171603U CN202093499U CN 202093499 U CN202093499 U CN 202093499U CN 201120171603X U CN201120171603X U CN 201120171603XU CN 201120171603 U CN201120171603 U CN 201120171603U CN 202093499 U CN202093499 U CN 202093499U
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- CN
- China
- Prior art keywords
- printed circuit
- touch screen
- glass substrate
- circuit layer
- capacitive touch
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Abstract
The utility model relates to a capacitive touch screen, which comprises an indium tin oxide (ITO) glass substrate. A printed circuit layer is arranged on the front face of the ITO glass substrate, and a polyester (PET) film is bonded to the outer surface of the printed circuit layer. The back face of the ITO glass substrate is also provided with a printed circuit layer, and a PET film is bonded to the outer surface of the printed circuit layer of the back face of the ITO glass substrate. The PET film is bonded to the corresponding printed circuit layer through a gluing layer which is optical cement, and each printed circuit layer is bounded to a flexible circuit board. The capacitive touch screen replaces traditional glass cover plates with the PET films and is low in cost, high in efficiency and suitable for mass production. Devices of a bonding process and process operation are both greatly simplified. Bonding of the PET films adopts a mode of soft-bonding-to-hard, and yield of products can reach over 99%. Products of the touch screen do not have image faults. During assembly, a casing presses the soft PET films which have good buffering effects, so that the whole capacitive screen cannot be damaged.
Description
Technical field
The utility model relates to the touch-screen field, relates in particular to a kind of capacitive touch screen.
Background technology
At present, existing capacitance touch screen (being called for short " capacitance plate ") mainly adopts the version of upper strata glass cover-plate and lower floor's ito glass plate.Because its levels is glass, is fitting to a time-out, easily produce bubble between the layer glass, the product yield is very low, and upper strata employing glass cover-plate cost is very high, and because layer glass is sticked to form, thickness is thicker simultaneously.
In addition, the glass cover-plate on upper strata need cut with CNC equipment, and efficient is very low.Simultaneously, the mode that present capacitance plate structure only is fit to down adorn on the upper strata is assembled, and casing can not be pressed onto above the capacitance plate and assemble, otherwise capacitance plate is crushed.
The utility model content
Technical problem to be solved in the utility model is, a kind of capacitive touch screen is provided, and makes processing procedure problem more rambunctious to solve common capacitive touch screen, reduces cost, improves yield.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is as follows: a kind of capacitive touch screen, be included in the ito glass substrate that the front is provided with layer printed circuit board, and also be pasted with the PET film at the outer surface of layer printed circuit board.
Further, the back side of described ito glass substrate also is provided with layer printed circuit board, and the layer printed circuit board outer surface at the ito glass substrate back side is pasted with the PET film.
Further, described PET film is pasted on the corresponding layer printed circuit board by adhesive layer.
Further, described adhesive layer is an optical cement.
Further, go back nation on the described layer printed circuit board flexible PCB is arranged surely.
By adopting technique scheme, the utility model has following beneficial effect at least: owing to adopt the PET film to replace traditional glass cover-plate, not only the equipment of bonding process and technological operation all can greatly be simplified, laser or cutting die casing are adopted in the moulding of PET film, need not outsourcing, the touch-screen factory of specialty all can produce, and the efficient height is fit to produce in enormous quantities; And the applying of PET film belongs to the hard mode of soft subsides, and the product yield can reach more than 99%.
Two-layer PET film up and down is set, and its anti-scratch performance is good, also can guarantee standard, stable specific inductive capacity; And middle ito glass substrate is low resistance glass, has solved the touch-sensitive problem of capacitive touch screen well.Guarantee that touch-screen is difficult for image fault in use.
In addition, when assembling, the casing of capacitance plate just is pressed onto the PET film of capacitance plate, because the PET film is a soft material, has the comfort cushioning effect, and can not crush the whole capacitor screen.
The utility model capacitive touch screen can be widely used in industries such as panel computer, mobile phone, GPS, learning machine, PDA, automation equipment, military affairs, vehicle carried video system, vehicle-carrying DVD, touch display.
Description of drawings
Fig. 1 is the cross sectional representation of the utility model capacitive touch screen.
Embodiment
Please refer to Fig. 1, the utility model provides a kind of capacitive touch screen, comprises ito glass substrate 1, layer printed circuit board 2 and PET film 3.
Wherein, the front and back of described ito glass substrate 1 is equipped with layer printed circuit board 2, and described layer printed circuit board 2 is connected surely with flexible PCB (FPC) 20 nations.Normally elder generation molds described layer printed circuit board 2 at the surface printing of ito glass substrate 1, flexible PCB 20 is bonded to the respective side surface of ito glass substrate 1 again.
And described PET film 3 is to be pasted on the ito glass substrate 1 on the outer surface of corresponding layer printed circuit board 2 by adhesive layer 30.According to the needs of product design, can only paste PET film 3 at layer printed circuit board 2 outer surfaces in ito glass front, also can paste PET film 3 at the outer surface of the layer printed circuit board 2 of front and back.Described adhesive layer preferably adopts optical cement.
When preparing above-mentioned capacitive touch screen, specifically comprise the steps:
Nation decides step, and printing molds layer printed circuit board on ito glass substrate, flexible PCB is bonded on the ito glass substrate to link to each other with layer printed circuit board again.
Step of membrane sticking is attached to PET film surface with optical cement, and the PET film is cut into and the suitable small pieces of ito glass substrate size, the PET film of small pieces is attached to the outer surface of layer printed circuit board on the ito glass substrate.
The deaeration step: the product that will post film is delivered to the deaeration machine and is utilized air pressure that bond site is compressed, and eliminates bubble because this step can be eliminated the bubble of bond site preferably, but and nonessential step, step of membrane sticking is operated when accurate, this step can be omitted.
In step of membrane sticking, before optical cement being attached on the PET film, printing base colour on the PET film earlier also, and then optical cement is attached to a side surface of PET film printing base colour.
Preferably, the front of described ito glass substrate and the back side are all plastic layer printed circuit board, and corresponding nation has flexible PCB surely, and, all post the PET film at the outer surface of the layer printed circuit board of front and back.
After having carried out deaeration, can carry out follow-up such as conventional operations such as functional test, visual testing, packing shipment.
Claims (5)
1. a capacitive touch screen is included in the ito glass substrate that the front is provided with layer printed circuit board, it is characterized in that, also is pasted with the PET film at the outer surface of layer printed circuit board.
2. capacitive touch screen as claimed in claim 1 is characterized in that the back side of described ito glass substrate also is provided with layer printed circuit board, and the layer printed circuit board outer surface at the ito glass substrate back side is pasted with the PET film.
3. capacitive touch screen as claimed in claim 1 or 2 is characterized in that, described PET film is pasted on the corresponding layer printed circuit board by adhesive layer.
4. capacitive touch screen as claimed in claim 3 is characterized in that, described adhesive layer is an optical cement.
5. capacitive touch screen as claimed in claim 1 or 2 is characterized in that, going back nation on the described layer printed circuit board has flexible PCB surely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120171603XU CN202093499U (en) | 2011-05-25 | 2011-05-25 | Capacitive touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120171603XU CN202093499U (en) | 2011-05-25 | 2011-05-25 | Capacitive touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202093499U true CN202093499U (en) | 2011-12-28 |
Family
ID=45368553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120171603XU Expired - Fee Related CN202093499U (en) | 2011-05-25 | 2011-05-25 | Capacitive touch screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202093499U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102789334A (en) * | 2012-07-10 | 2012-11-21 | 苏州泛普纳米科技有限公司 | Nanometer touch film production method |
| CN103302947A (en) * | 2012-03-13 | 2013-09-18 | 苏州市健邦触摸屏技术有限公司 | Screen pasting technology of capacitance multi-point touch screen |
| CN103324346A (en) * | 2013-06-11 | 2013-09-25 | 业成光电（深圳）有限公司 | Touch device and touch panel thereof |
| CN104881173A (en) * | 2015-06-03 | 2015-09-02 | 牧东光电（苏州）有限公司 | Touch panel structure and production technology thereof |
-
2011
- 2011-05-25 CN CN201120171603XU patent/CN202093499U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103302947A (en) * | 2012-03-13 | 2013-09-18 | 苏州市健邦触摸屏技术有限公司 | Screen pasting technology of capacitance multi-point touch screen |
| CN102789334A (en) * | 2012-07-10 | 2012-11-21 | 苏州泛普纳米科技有限公司 | Nanometer touch film production method |
| CN102789334B (en) * | 2012-07-10 | 2015-02-18 | 苏州泛普纳米科技有限公司 | Nanometer touch film production method |
| CN103324346A (en) * | 2013-06-11 | 2013-09-25 | 业成光电（深圳）有限公司 | Touch device and touch panel thereof |
| CN104881173A (en) * | 2015-06-03 | 2015-09-02 | 牧东光电（苏州）有限公司 | Touch panel structure and production technology thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN DEPUTE ELECTRONICS CO., LTD. Free format text: FORMER OWNER: GANZHOU DPT TECHNOLOGY CO.,LTD. Effective date: 20150625 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150625 Address after: 518000 Guangdong city of Shenzhen province Baoan District Xixiang South Street Community Shu Tai Road No. 2 Patentee after: SHENZHEN DPT ELECTRONICS Co.,Ltd. Address before: 341000 Depp special industrial zone, Nankang West Industrial Zone, Ganzhou, Jiangxi Patentee before: Ganzhou DPT Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20200525 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |