Touch panel device
US6750853B2 · kind B2 · utility
14Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2001 |
| Grant date | Jun 15, 2004 |
| Priority date | — |
| Expiry date | Jul 6, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0436
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A surface acoustic waves is excited from an excitation element disposed on a substrate, the surface acoustic wave propagated on the substrate is received by a receiving element positioned on the substrate so as to face the excitation element, and the position of an object touching the substrate is detected based on the reception result. The wave number of a burst wave applied to excite the excitation element is made equal to the number of the comb-like electrode fingers of an IDT of the excitation element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.