Illumination device and display device
US10488577B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 14, 2018 |
| Grant date | Nov 26, 2019 |
| Priority date | — |
| Expiry date | Jun 14, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/342
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An illumination device includes: a first light guide plate including a first and a second scattering portions and a first region not having the first and second scattering portions arranged therein; a second light guide plate including a third and a fourth scattering portions; a first illuminator emitting light to a first side surface of the first light guide plate; a second illuminator emitting light to a second side surface opposite to the first side surface; a third illuminator emitting light to a third side surface of the second light guide plate; and a fourth illuminator emitting light to a fourth side surface opposite to the third side surface. The second light guide plate overlaps the first light guide plate as viewed from a direction of the thicknesses thereof. The third and fourth scattering portions overlap the first region as viewed from the direction of the thicknesses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.