Method of driving a matrix type liquid crystal display device
US3995942A · kind A · utility
60Cited by
1References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 21, 1975 |
| Grant date | Dec 7, 1976 |
| Priority date | — |
| Expiry date | Feb 21, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0209
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of line-by-line scanning liquid crystal dots at the intersections of signal and scanning lines arranged in a matrix form, a signal including a selective voltage enough to excite the liquid crystal dot into illumination and a bias voltage for averaging a cross talk voltage is applied to the signal line. The duration time or pulse width of the selective voltage may be varied in accordance with a desired tone level, so that a display with tone can be achieved while the cross talk voltage is averaged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.