Liquid crystal display device
US6756958B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2001 |
| Grant date | Jun 29, 2004 |
| Priority date | — |
| Expiry date | Feb 22, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0233
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a liquid crystal display device including a liquid crystal panel for displaying a tone in correspondence with a potential difference between a drain voltage and a common voltage, a drain driver circuit for generating the drain voltage corresponding to display data and applying the drain voltage to the liquid crystal panel, and a gate driver circuit for selecting a scanning line in the liquid crystal panel to which the drain voltage is applied, a power-supply circuit executes a comparative calculation of a reference common voltage and a feedback common voltage, then applying, to the liquid crystal panel, the common voltage obtained as a result of the comparative calculation, the reference common voltage whose potential level having been adjusted, the feedback common voltage is fedback from the liquid crystal panel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.