Backlight unit
US8371739B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2008 |
| Grant date | Feb 12, 2013 |
| Priority date | — |
| Expiry date | Jan 9, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0088
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A backlight unit includes a light source, a light guide guiding light from the light source, an optical sheet disposed on the light guide, and an inner frame having an opening housing the optical sheet. A peripheral portion of the optical sheet includes a projection group respectively at each of the longitudinal sides that are among the constituent sides of an approximately rectangular external contour of the optical sheet. The projection group includes a first projection arranged in a projection insertion region provided in a side wall of the inner frame and a second projection arranged outside of the projection insertion region in the opening of the inner frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.