LCD backlighting method and apparatus using a xenon flash tube including drive circuit
US5673999A · kind A · utility
144Cited by
5References
54Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 5, 1995 |
| Grant date | Oct 7, 1997 |
| Priority date | — |
| Expiry date | Jun 5, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/021
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An liquid-crystal display panel is illuminated by one or more xenon flash tubes as a backlighting source. The LCD backlight includes a back reflector, a reflecting cavity, and a light diffuser. The LCD panel is illuminated by triggering a flash of light from the xenon flash tube at a given frequency, reflecting the flash of light off of a back reflector, and diffusing the flash of light through a light diffuser. Flash lamp drive circuitry controls the triggering of a flash of light from a xenon flash lamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.