Driving method of image display device, driving device of image display device, and image display device
US7196683B2 · kind B2 · utility
14Cited by
26References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2001 |
| Grant date | Mar 27, 2007 |
| Priority date | — |
| Expiry date | Aug 9, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/041
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In an image display device which employs pulse width modulation driving, a voltage which is less than a voltage supplied to signal lines is applied to pixel electrodes. Tones are displayed by shifting phases of waveforms of the signal lines and scanning lines, and polarities of pixels in a signal line direction are inverted alternately. This prevents increase in power consumption which is caused by pulse intervals which become too small at high tone levels, in addition to preventing change in tone level due to external factors such as temperature, or signal delays in a driver or wiring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.