Illumination device and display device
US8259384B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 10, 2010 |
| Grant date | Sep 4, 2012 |
| Priority date | — |
| Expiry date | Mar 3, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/134309
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An illumination device is provided and includes: a light guide member; a light source provided on one or more side faces of the light guide member; and a light modulating element including a pair of transparent substrates disposed to oppose each other with a gap therebetween, a first electrode provided on a surface of one of the transparent substrates, a second electrode provided on a surface of the other of the transparent substrates, and a light modulation layer provided in the gap and expressing a scattering property or a transparency to light from the light source in accordance with a magnitude of an electric field. The first electrode, the second electrode, or both thereof is patterned, and a density of pattern of the first electrode, the second electrode, or both thereof to which the patterning is applied is varied depending on a distance from the light source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.