Backlight device and liquid crystal display device comprising the same
US11036084B2 · kind B2 · utility
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14Claims
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Assignee
Inventors
Key dates
| Filing date | Jul 21, 2020 |
| Grant date | Jun 15, 2021 |
| Priority date | — |
| Expiry date | Jul 21, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133615
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
According to one embodiment, a backlight device includes a light guide including an emission surface including a flat area and an inclined area inclined in an out-of-plane direction from an edge of the flat area, a light source emitting light into the light guide, and an optical diffusion sheet on the emission surface. The optical diffusion sheet includes a diffusion flat area overlapping the flat area of the emission surface and a diffusion inclined area overlapping the inclined area of the emission surface, and a haze of the diffusion inclined area is higher than that of the diffusion flat area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.