Surface light source and backlight unit having the same
US7387421B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2006 |
| Grant date | Jun 17, 2008 |
| Priority date | — |
| Expiry date | Jul 11, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133613
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A backlight unit for a liquid crystal display is provided. The backlight unit includes a surface light source, a diffuser sheet uniformly diffusing incident light from the surface light source, and a light collection sheet collecting light diffused by the diffuser sheet. The surface light source includes a first LED arrangement in which two green LEDs, a red Led, and a blue LED are arranged in this order and a second LED arrangement in which two green LEDs, a blue LED, and a red LED are arranged in this order. The first and second LED arrangements are done along rows or columns, and, in a combination of the first and second LED arrangement, the two green LEDs are surrounded by the red and/or blue LEDs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.