Lighting device including light guide plate and display device including the lighting device
US11143915B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2020 |
| Grant date | Oct 12, 2021 |
| Priority date | — |
| Expiry date | Sep 11, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133613
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting device includes light sources arranged in a row in an arrangement direction, alight guide plate disposed to cover the light sources and including a plate surface facing the light sources and an opposite plate surface opposite from the plate surface, and a light diffusion portion. A portion of the plate surface is a light entering surface and the opposite plate surface is a light exit surface. The light diffusion portion extends in the arrangement direction of the light sources and on the light exit surface such that a portion of the light diffusion portion overlaps the light sources. The light diffusion portion applies a diffusion effect to light that is within the light guide plate so as to travel in a direction crossing the arrangement direction and to be away from the light sources seen from a normal direction of the light exit surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.