Illumination device and liquid crystal display apparatus
US7973877B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 2007 |
| Grant date | Jul 5, 2011 |
| Priority date | — |
| Expiry date | Jan 10, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An object of the invention is to provide an illumination device that can make it easy to detect a disorder of a light emitting element, and a liquid crystal display apparatus including the illumination device. Each light emitting element array (S) is constituted by light emitting elements (T) which are connected in series. To the light emitting elements (T) are individually connected in parallel current bypass elements (U) that are changed from a disconnected state where no current flows to a connected state where current flows when a predetermined voltage higher than that applied to the light emitting elements in an lighting state is applied thereto. Each power source unit (P) is connected to each light emitting element array (S) in series, and supplies constant current to each light emitting element (T). Terminal units for voltage detection (11) are connected to an anode (A) of each light emitting element (T).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.