Low power LCD with gray shade driving scheme
US7362294B2 · kind B2 · utility
3Cited by
9References
74Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2002 |
| Grant date | Apr 22, 2008 |
| Priority date | — |
| Expiry date | Jan 25, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/023
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a passive liquid crystal display, frames or fields are displayed for different time periods to achieve gray scale. The voltage pulses applied to the column electrodes have substantially constant values during row scanning periods or field scanning periods to reduce power consumption. The lines of the display may be divided into odd and even fields in an interlaced configuration to suppress flicker and to further reduce power consumption by reducing frame rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.