Front light guide for liquid crystal device with stairstep element which emits light
US5465193A · kind A · utility
6Cited by
10References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 28, 1993 |
| Grant date | Nov 7, 1995 |
| Priority date | — |
| Expiry date | Jun 28, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133616
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A front lighted liquid crystal display assembly (10) comprises a liquid crystal display (22) and a substantially clear lens (11) mounted above the liquid crystal display. The clear lens has a portion with a stair step configuration (18). The assembly further comprises a light pipe (14) integrally coupled to the substantially clear lens for substantially transmitting a light (12) through the light pipe and into and through the stair step configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.