Illumination device including a sheet having light blocking portions and light transmitting portions and display device including the same
US12392953B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2024 |
| Grant date | Aug 19, 2025 |
| Priority date | — |
| Expiry date | Jul 9, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133607
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An illumination device is provided with a first light source, a first light guide plate including a second main surface, a second light source, a second light guide plate including a fourth main surface, a third light source, an optical member, and a first sheet. The main surfaces of the first light guide plate and the second light guide plate overlap each other and the first light guide plate and the second light guide plate are disposed on the opposite side of the first sheet from the optical member. The first sheet includes two first light blocking portions and a first light-transmitting portion. The first light reflection portion is selectively provided in a first region in the first opposite main surface, and the second light reflection portion is provided at least in a fourth region in the second opposite main surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.