Method and system for LCD panel light source selection
US6943770B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2002 |
| Grant date | Sep 13, 2005 |
| Priority date | — |
| Expiry date | Dec 9, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and system selects between a LED light source and an electroflorescent light source, such as a CCFL light source, to illuminate a LCD panel that displays information generated by an information handling system. A light source controller selects one or both of LED and CCFL light sources to illuminate the LCD panel based on one or more predetermined factors, such as the power consumption of the light source for a selected display brightness. In one embodiment, the light source controller preserves battery power of a portable information handling system by selection of one of the light sources based on a determination of which light source will consume the least power for a selected display brightness level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.