Image display device and method for driving the same
US7239297B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 5, 2002 |
| Grant date | Jul 3, 2007 |
| Priority date | — |
| Expiry date | Feb 2, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image display device including a liquid crystal display panel is provided which is capable of achieving reduction of power consumption and EMI (Electromagnetic Interference) by lowering an amount of transfer of digital gray-scale data. To the liquid crystal display panel are connected a display controlling circuit, a scanning line driving circuit, and a signal line driving circuit. If input gray-scale data corresponding to a present line does not match gray-scale data corresponding to a previous line, gray-scale data is output and D/A (digital-analog) converted signal voltage is output. If both the gray-scale data are matched with each other, a matching signal is output to have D/A converted signal voltage be output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.