Touch panel sensing circuit
US8514191B2 · kind B2 · utility
3Cited by
1References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2010 |
| Grant date | Aug 20, 2013 |
| Priority date | — |
| Expiry date | Mar 23, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/960775
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch panel sensing circuit senses a voltage variation of a coupling capacitor formed between a first directional signal line and a second directional signal line separated from the first directional signal line by a dielectric when an object approaches. The sensing circuit eliminates the parasitic capacitance effect on the signal lines and rapidly accumulates charges for an amplifier in sensing to thereby increase the operational speed of the sensing circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.