System and method of driving a display device
US6636206B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 10, 2001 |
| Grant date | Oct 21, 2003 |
| Priority date | — |
| Expiry date | Mar 20, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Electric power consumed in an operation of displaying a gray-scale image is reduced. One of a plurality of scanning lines is selected during one horizontal scanning period, and a selection voltage is applied to the scanning line during one of a first half period and a second half period that said horizontal scanning period has been divided into. When an intermediate gray level is displayed, the selection voltage is applied to a scanning line in an odd-numbered column during the second half period and the selection voltage is applied to a scanning line in an even-numbered column during the first half period. To a pixel at a location corresponding to the selected scanning line, a turn-on voltage and a turn-off voltage are applied via a corresponding data line during particular periods within the period during which the selection voltage is applied such that the turn-on voltage is applied during a period with a length corresponding to a gray level while the turn-off voltage is applied during the remaining period. Thus, when an intermediate gray level is displayed by a pixel, the voltage level of the data signal Xi applied to the pixel is switched as few times as twice per horizontal s…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.