Backlight unit capable of local dimming
US9989689B2 · kind B2 · utility
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2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 16, 2016 |
| Grant date | Jun 5, 2018 |
| Priority date | — |
| Expiry date | Jun 15, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0031
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A backlight unit may be provided which is capable of local dimming. The backlight unit includes: one or a plurality of light emitting devices; and a light guide plate including a top surface and a bottom surface, one or a plurality of grooves which are formed in the bottom surface and in which the light emitting device is disposed, a reflective layer which is disposed within the one or the plurality of grooves and reflects light emitted from the light emitting device, and a plurality of inverse prism patterns disposed in the top surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.