Liquid crystal display device
US8325295B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 19, 2010 |
| Grant date | Dec 4, 2012 |
| Priority date | — |
| Expiry date | Feb 13, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0233
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A liquid crystal display device includes a liquid crystal display panel, a plurality of groups of light source units, a plurality of light guide plates, and a light source control circuit configured to control light amounts of the light source units. The plurality of light guide plates are configured to transmit light from the plurality of groups of the light source units. In each of the plurality of light guide plates, areas from which the transmitted light exiting toward the liquid crystal display panel differ from one another. One of the plurality of groups of the light source units paired with one of the plurality of light guide plates includes at least two light source units that are controlled in light amount independently. A number of the areas of the one of the plurality of light guide plates is at least a number of the light source units thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.