Display apparatus and illumination unit
US9494803B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2012 |
| Grant date | Nov 15, 2016 |
| Priority date | — |
| Expiry date | Sep 27, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/62
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An illumination unit capable of obtaining high luminance and a display apparatus including it are provided. The illumination unit includes an illumination optical system generating the illumination light, and a lens sheet narrowing a divergence angle of the illumination light. The illumination optical system includes a first transparent substrate and a second transparent substrate that are separated from each other and are arranged to face each other, and a light source applying light to an end face of the first transparent substrate or of the second transparent substrate. The illumination optical system is provided in a gap between the first transparent substrate and the second transparent substrate, and includes a light modulation layer exhibiting scattering characteristics or transparent characteristics with respect to the light from the light source in accordance with a magnitude of an electric field. The illumination optical system includes an electrode generating an electric field that generates a plurality of linear scattering regions in the light modulation layer in a three-dimensional display mode, and generating an electric filed that generates a planar scattering region …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.