CN202854786U - Anti-interference capacitive touch screen - Google Patents
Anti-interference capacitive touch screen Download PDFInfo
- Publication number
- CN202854786U CN202854786U CN 201220526654 CN201220526654U CN202854786U CN 202854786 U CN202854786 U CN 202854786U CN 201220526654 CN201220526654 CN 201220526654 CN 201220526654 U CN201220526654 U CN 201220526654U CN 202854786 U CN202854786 U CN 202854786U
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- circuit board
- main circuit
- conducting film
- pet
- processor
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Abstract
The utility model discloses an anti-interference capacitive touch screen which is formed by stacking and pressing fit of toughened glass, a main circuit board and an indium tin oxid (ITO) conducting film of a polyethylene terephthalate (PET) structure in sequence. The toughened glass and the main circuit board are bonded together through an optical glue layer, and the main circuit board and the ITO conducting film of the PET structure are bonded together through an optical glue layer. The main circuit board is connected with a flexible printed circuit (FPC) provided with a processor, the two ends of the ITO conducting film of the PET structure are connected to the FPC provided with the processor through wires, the FPC provided with the processor is provided with a ground connection pin, and one end of the ground connection pin is connected between the main circuit board and the ITO conducting film of the PET structure. The anti-interference capacitive touch screen has good anti-interference capacity, and is good in touch sensitive precision.
Description
Technical field
The utility model relates to a kind of touch-screen, belongs to the display element technical field.
Background technology
Existing capacitive touch screen module, signal disturbs very difficult controlled, causes following problem: when 1) capacitive touch screen is debugged, be difficult to disturb by the shielding construction shielded signal; 2) after the user uses a period of time, can because the existence that capacitive touch screen module signal disturbs so that capacitive touch screen can't work normally; 3) versatility is poor, and disturbing for different signals to have the IC processor that matches just can satisfy the demands.
Therefore, be necessary existing capacitive touch screen is carried out the improvement of interference free performance.
The utility model content
For the defective of prior art, the utility model provides a kind of anti-interference capacitor type touch-screen, and this touch-screen antijamming capability is strong.
For achieving the above object, the utility model is achieved through the following technical solutions:
The anti-interference capacitor type touch-screen, comprise tempered glass, the ITO conducting film of main circuit board and PET structure stacks gradually pressing and forms, wherein adopt the optics glue-line bonding between tempered glass and the main circuit board, adopt the optics glue-line bonding between the ITO conducting film of main circuit board and PET structure, wherein main circuit board is connected with the FPC that is mounted with processor, the ITO conducting film two ends of PET structure are connected to the FPC that is mounted with processor by wire, the FPC that is mounted with processor is provided with grounding pin, and an end of grounding pin is electrically connected between the ITO conducting film of main circuit board and PET structure.
By said structure, touch-screen of the present utility model has strengthened antijamming capability from two aspects: 1. the ITO conducting film of independent grounding pin with the PET structure of lower surface is connected, undesired signal is derived, realize good anti-jamming effectiveness; 2. conducting film is drawn two wires, can significantly increase the touch-screen working signal electrode time that discharges and recharges in when scanning, that is to say that the induction speed that has been equivalent to increase electrode is original twice, thereby significantly shortens sweep time, improve signal to noise ratio (S/N ratio).
Effect 1 in above-mentioned is the appearance that directly reduces the signal interference phenomenon, acting on 2 is to have strengthened normal input sensing capability, thereby reduced the intensity of signal interference in whole signal, by these two kinds of effects, touch-screen of the present utility model is able to the impact that maximized reduction signal disturbs.
Wherein, the ITO conducting film of described PET structure is monofilm, and by sputter transparent indium tin oxide on the PET base material, namely ITO conductive film coating forms.
The production technology of the ITO conducting film of PET structure be those skilled in the art extensively known to, normally adopt magnetron sputtering technique, sputter transparent indium tin oxide (ITO) conductive film coating and obtain through the high temperature anneal on the PET base material.Thickness according to the ITO rete is different, and Film conductivity can be also different with light transmission.In general, in the situation of the identical process conditions PET base material identical with performance, the ITO rete is thicker, and the surface resistance of PET-ITO film is less, and light transmission rate is also accordingly less.
Wear the needs of touch-screen in order to be fit to modern condenser type, the thickness of above-mentioned monofilm is 0.01-0.05mm.
Wherein, used wire is plain conductor, and preferred, described wire is silver-colored wire.
Description of drawings
Fig. 1 is the utility model touch screen structure synoptic diagram;
Fig. 2 is the structural representation of FPC.
Embodiment
With reference to figure 1, touch-screen of the present utility model, the ITO conducting film 3 that comprises tempered glass 1, main circuit board 2 and PET structure, between each layer structure with optics glue- line 41,42 bonding, main circuit board is connected with the FPC flexible printed wiring board 5 that is mounted with processor 51, ITO conducting film 3 two ends of PET structure are connected to the FPC flexible printed wiring board 5 that is mounted with processor by wire, the FPC that is mounted with processor is provided with grounding pin 52, and an end of grounding pin is electrically connected between the ITO conducting film 3 of main circuit board 2 and PET structure.
With reference to figure 2, shown the structure of FPC flexible printed wiring board, comprise processor 51 and grounding pin 52.
Claims (4)
1. anti-interference capacitor type touch-screen, comprise tempered glass, the ITO conducting film of main circuit board and PET structure stacks gradually pressing and forms, it is characterized in that adopting between tempered glass and the main circuit board optics glue-line bonding, adopt the optics glue-line bonding between the ITO conducting film of main circuit board and PET structure, wherein main circuit board is connected with the FPC that is mounted with processor, the ITO conducting film two ends of PET structure are connected to the FPC that is mounted with processor by wire, the FPC that is mounted with processor is provided with grounding pin, and an end of grounding pin is electrically connected between the ITO conducting film of main circuit board and PET structure.
2. touch-screen according to claim 1, the ITO conducting film that it is characterized in that described PET structure is monofilm, by sputter transparent indium tin oxide on the PET base material, namely ITO conductive film coating forms.
3. touch-screen according to claim 2 is characterized in that described monofilm thickness is 0.01-0.05mm.
4. touch-screen according to claim 1 is characterized in that described wire is silver-colored wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220526654 CN202854786U (en) | 2012-10-15 | 2012-10-15 | Anti-interference capacitive touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220526654 CN202854786U (en) | 2012-10-15 | 2012-10-15 | Anti-interference capacitive touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202854786U true CN202854786U (en) | 2013-04-03 |
Family
ID=47985959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220526654 Expired - Fee Related CN202854786U (en) | 2012-10-15 | 2012-10-15 | Anti-interference capacitive touch screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202854786U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103294308A (en) * | 2013-05-09 | 2013-09-11 | 晟光科技股份有限公司 | Improved GF (glass-film)-structured touch screen and connection method for FPC (flexible printed circuit) thereof |
| CN107894672A (en) * | 2017-12-26 | 2018-04-10 | 信利光电股份有限公司 | A kind of display screen |
-
2012
- 2012-10-15 CN CN 201220526654 patent/CN202854786U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103294308A (en) * | 2013-05-09 | 2013-09-11 | 晟光科技股份有限公司 | Improved GF (glass-film)-structured touch screen and connection method for FPC (flexible printed circuit) thereof |
| CN103294308B (en) * | 2013-05-09 | 2017-07-11 | 晟光科技股份有限公司 | A kind of improved GF structures touch-screen and its FPC connection methods |
| CN107894672A (en) * | 2017-12-26 | 2018-04-10 | 信利光电股份有限公司 | A kind of display screen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20131015 |