Backlighting system with a multi-reflection light injection system and using microprisms
US5359691A · kind A · utility
211Cited by
5References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1993 |
| Grant date | Oct 25, 1994 |
| Priority date | — |
| Expiry date | Apr 19, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13355
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An assembly for backlighting a liquid crystal flat panel display or other such arrangement requiring backlighting is disclosed herein. The assembly is composed of a multi-reflection light injection system, a light pipe and a set of specifically configured microprisms which, cooperating with the light pipe, provides an efficient backlighting technique with a controllable degree of collimation. The disclosed assembly may employ up to four light sources to give a brighter backlighting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.