Touch position detector of capacitive touch panel and method for detecting the touch position
US8232972B2 · kind B2 · utility
26Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2008 |
| Grant date | Jul 31, 2012 |
| Priority date | — |
| Expiry date | Jan 8, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/04182
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch position detector includes a plurality of capacitance sensors, a negative capacitance compensation unit, an analog/digital converter and a micro processing unit. The negative capacitance compensation unit is utilized to compensate the capacitance of the capacitance sensor and get a capacitance change. The micro controller unit is utilized to detect the touch position according to the capacitance change. It is easy to get the touch position by using the touch position detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.