Backlight unit of direct type
US7967490B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2008 |
| Grant date | Jun 28, 2011 |
| Priority date | — |
| Expiry date | Jun 25, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133628
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides a backlight unit including an LED module and a frame separately, and each separated part is stable and is capable of simple use and assembly. The backlight unit of direct type includes a plurality of makeup LED modules including an LED package of direct type on a PCB and a heat sink releasing heat generated from driving the LED package of direct type, a reflection plate reflecting light emitted from the makeup LED module to a front face, and attached at the remaining surface except for the makeup LED packages, an optical sheet disposed on the reflection plate, and improving brightness and uniformity of the light emitted from the makeup LED module and the reflection plate, and guide the light into a front face of the optical sheet and a frame including a guide rail to combine the makeup LED module by a sliding combination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.