Backlight device and liquid crystal display
US8334942B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 7, 2006 |
| Grant date | Dec 18, 2012 |
| Priority date | — |
| Expiry date | Jul 14, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133603
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A backlight device and a liquid crystal display are provided. A liquid crystal display apparatus including a direct backlight device which has an LED assembled into a light-guiding plate and in which an brightness uniformity is controlled or improved is provided by controlling or improving the brightness uniformity.A backlight device 10 includes a light emitting diode 21 as a light source assembled into a light-guiding plate 30, in which an edge portion 32 on the bottom surface 30B side of a concave portion 31 in a light-guiding plate 30, where the light emitting diode 21 is assembled, is formed at to have the shape of an inclined or curved surface that has an angle except a right angle with respect to the bottom surface 30B.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.