Backlight module with brightness enhancing structures and liquid crystal display device incorporating same
US7434975B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2006 |
| Grant date | Oct 14, 2008 |
| Priority date | — |
| Expiry date | Oct 31, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0068
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A liquid crystal display device 700 has a liquid crystal panel 701 and a backlight module 70 under the liquid crystal panel for providing light beams to the liquid crystal panel. The backlight module includes at least one light source 720, and a light guide plate 711. The light guide plate has an incident surface 710 for receiving light beams from the at least one light source, an emitting surface 712 adjacent the incident surface, and a bottom surface 713 opposite to the emitting surface, at least one brightness enhancing pattern being provided at the bottom surface. The at least one brightness enhancing pattern has a plurality of brightness enhancing element 714, each of which is an arcuate and generally subtending the at least one light source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.