Edge source illumination device for liquid crystal display with patterned electrodes for light guide modulation layer
US9069208B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 2011 |
| Grant date | Jun 30, 2015 |
| Priority date | — |
| Expiry date | Jul 14, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/134318
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An illumination device includes a light guide plate, a light source, and a light modulation element. The light guide plate has convex portions extending in a direction parallel to a normal to a face opposed to the light source among side faces of the light guide plate, and the light source is configured of light source blocks. The light modulation element includes a pair of transparent substrates disposed separately and oppositely to each other, a plurality of first electrodes provided on a surface of one of the transparent substrates, and extending in a direction crossing an extending direction of the convex portions, a second electrode provided on a surface of the other transparent substrate, and a light modulation layer provided in a gap between the transparent substrates, and exhibiting a scattering property or a transparent property to light from the light source depending on magnitude of an electric field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.