Direct-type backlight unit and liquid crystal display using the same
US9063367B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2012 |
| Grant date | Jun 23, 2015 |
| Priority date | — |
| Expiry date | Feb 19, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F13/0409
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A direct-type backlight unit is provided for improving a dark area problem on the diffusion plate. The direct-type backlight unit includes an optical sheet; a diffusion plate for supporting the optical sheet; a bottom plate, disposed below the diffusion plate; a plurality of light emitting devices (LEDs), disposed between the diffusion plate and the bottom plate; a plurality of supporting elements, disposed between the diffusion plate and the bottom plate and fixed on the bottom plate, each supporting element including: a top portion having a light transmissive section through which light emitted by the LEDs pass; and a bottom portion, fixed on the bottom plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.