Electro optical display device with redundant switching means
US4994796A · kind A · utility
12Cited by
9References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 16, 1988 |
| Grant date | Feb 19, 1991 |
| Priority date | — |
| Expiry date | Jun 16, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2300/0895
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a picture display device driven with an active matrix the voltage across the picture elements is accurately adjusted by discharging or charging the associated capacitances, if necessary, first to beyond the transition range in the transmission/voltage characteristic. Redundancy is advantageously used in the switching units employed for this purpose.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.