Led-based LCD backlight with extended color space
US6608614B1 · kind B1 · utility
204Cited by
5References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 22, 2000 |
| Grant date | Aug 19, 2003 |
| Priority date | — |
| Expiry date | Jul 20, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/145
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A backlight for a liquid-crystal display is disclosed. The backlight includes a first LED array that provides light with a first chromaticity and a second LED array that provides light with a second chromaticity. A combining element combines the light from the first LED array and the second LED array and directs the combined light toward the liquid crystal display. A control system is operationally connected to the second LED array. The controller adjusts the brightness of at least one LED in the second LED array to thereby adjust the chromaticity of the combined light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.