Driving method for display panels
US4413256A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 1981 |
| Grant date | Nov 1, 1983 |
| Priority date | — |
| Expiry date | Feb 20, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/2014
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display device includes a combined dynamic scattering mode and twisted nematic mode cell structure including at least one first display electrode oriented in a first direction and a plurality of second display electrodes in a second direction. The plurality of second display electrodes oriented are supplied with a plurality of scanning signals of sequentially shifted phases with polarity inverted at a predetermined interval of time, whereas the first electrode is supplied with frame signals indicative of information to be displayed and having polarity inverted at the predetermined interval. In order to minimize variations in the threshold level of the display device, a plurality of pulse signals having a pulse width shorter than the pulse width of said scanning signals are added to the frame signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.