Backlight for liquid crystal display
US7528893B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 2007 |
| Grant date | May 5, 2009 |
| Priority date | — |
| Expiry date | Oct 31, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0068
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A backlight includes a lightguide having a light emission surface, a first light input surface, a second light input surface opposing the first light input surface, and a lightguide thickness. A plurality of antireflection features are on or in the first light input surface and second light input surface. Each antireflection feature has a base length value and a height value that are less than the light guide thickness. A right eye image solid state light source is positioned to provide light into the first light input surface and a left eye image solid state light source is positioned to provide light into the second light input surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.