Display apparatus and driving device for displaying
US7450099B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2004 |
| Grant date | Nov 11, 2008 |
| Priority date | — |
| Expiry date | Mar 30, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/18
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display drive circuit for outputting a gray scale voltage according to display data includes a generation circuit generating gray scale voltages of a plurality of levels, and a selection circuit which selects a gray scale voltage according to the display data. When the number of colors to be displayed is small, the generation circuit decreases a current flowing into an internal circuit which generates a gray scale voltage of an intermediate level other than two gray scale voltages of a gray scale voltage of the most lowest level and a gray scale voltage of the most highest level among the gray scale voltages of the plurality of levels, and the selection circuit selects the gray scale voltage according to the display data from the most lowest level gray scale voltage and the most highest level gray scale voltage which are generated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.