Touch panel data entry device for thin film electroluminescent panels
US4740781A · kind A · utility
82Cited by
13References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 8, 1985 |
| Grant date | Apr 26, 1988 |
| Priority date | — |
| Expiry date | Feb 8, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0447
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch-sensitive device for computer data entry from the presentation on a scanned, thin-film, electroluminescent display. A transparent conductive film is suspended over the display face. Touching that film at a predetermined point in the display capacitively couples scanning voltages (which are time-base synchronous and related to the touched point) to an amplifier and then to a utilization device (computer, for example).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.