Optical device and display apparatus having a plate-shaped light guide and an optical control surface thereon
US6836314B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2003 |
| Grant date | Dec 28, 2004 |
| Priority date | — |
| Expiry date | Jul 8, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/026
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical device and a display apparatus of the present invention are constructed so as to improve display characteristics of output light intensity, display contrast, and reduction of scattered light due to external light, and also to provide a large-screen. The optical device has a first stacked body and a plurality of second stacked bodies. The first stacked body includes a light guide, a first electrode, and an optical control layer. The second stacked body includes a plurality of second electrodes, the reflection film and a substrate. There is an optical control layer which changes in scattering degree or diffraction efficiency by an electric field applied by said first electrode and said second electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.