Backlighting assembly utilizing microprisms and especially suitable for use with a liquid crystal display
US5390276A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 1992 |
| Grant date | Feb 14, 1995 |
| Priority date | — |
| Expiry date | Oct 8, 2012 |
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 display is disclosed herein along with the liquid crystal display itself and a specific light polarization arrangement. The assembly for backlighting the liquid crystal display includes a backlighting light pipe into which light is directed in a particular manner and a specifically configured arrangement of immediately adjacent microprisms which cooperate with the backlighting light pipe for reflecting light within the ladder upwards through one of its surfaces in a generally collimated manner. The liquid crystal display backlighting assembly is also disclosed including a specifically designed arrangement for collimating the light directed into the light pipe such that the light exiting the light pipe does so on a more collimated manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.