Lighting device, backlighting for a display or a television, and display or television
US9482409B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 29, 2013 |
| Grant date | Nov 1, 2016 |
| Priority date | — |
| Expiry date | Aug 29, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133624
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A lighting device includes a first semiconductor body, which has an active zone that produces blue light having a first emission spectrum during operation, and a second semiconductor body, which has an active zone that produces green light having a second emission spectrum during operation. The lighting device also comprises a luminescent substance that is suitable for converting blue light of the first semiconductor body partially into red light having a third emission spectrum. The third emission spectrum has a peak in the red spectral range, the average half-width of which is no greater than 25 nm. The invention further relates to a backlighting device for a display or a television and to a display and a television.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.