Back light unit for a liquid crystal display device
US6164790A · kind A · utility
50Cited by
7References
27Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 17, 1998 |
| Grant date | Dec 26, 2000 |
| Priority date | — |
| Expiry date | Dec 17, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/005
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light guide panel of a back light unit for an LCD which is used for many display system includes a light guide which has a plurality of defined areas on the bottom surface and a uniform pattern. The uniform pattern has a geometrical shape in one area but the patterns of each defined area are different so as to provide a greatly improved brightness distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.