Back light device for crystal liquid display
US6027222A · kind A · utility
48Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1998 |
| Grant date | Feb 22, 2000 |
| Priority date | — |
| Expiry date | Jul 1, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0038
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A back light device for a liquid crystal display is provided, which comprises diffusing prisms formed on the surface of the light guide plate, and the apical angle of the diffusing prism is set in the range of 65-85 degrees for a uniform and brighter illumination using the same light source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.