Method for detecting touch point and touch panel using the same
US8159473B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2009 |
| Grant date | Apr 17, 2012 |
| Priority date | — |
| Expiry date | Sep 6, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04808
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a method for detecting touch points and a touch panel using the same. The method includes the steps of: providing a resistive pressure-sensing matrix includes M X-axis sensing lines and N Y-axis sensing lines, wherein the ith X-axis sensing line and the jth Y-axis sensing line are short-circuited when a preset range covering an overlapped region between the ith X-axis sensing line and the jth Y-axis sensing line is pressed; applying a scanning voltage to the pth Y-axis sensing line in a pth scanning period; detecting the M X-axis sensing lines to judge whether the scanning voltage is detected; and determining a touch coordinate as (q, p) when the qth X-axis sensing line receives the scanning voltage in the pth scanning period, wherein M, N, i, p and q are positive integers, 0<i, q<=M and 0<p<=N.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.