Light emitting device and TV back-light module with wide color gamut
US9496464B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2014 |
| Grant date | Nov 15, 2016 |
| Priority date | — |
| Expiry date | Dec 29, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133603
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provide an light emitting device (LED) with wide color gamut (high NTSC), and a LED backlight module with the light emitting device, the light emitting device includes at least one LED chip, wherein the LED chip is a blue or ultraviolet (UV) LED chip, the light-out surface of the LED chip is covered by a phosphor-converted layer which consists of phosphor converted materials and thermosetting colloid materials, the phosphor converted materials contain green-converted phosphor, red-converted phosphor and a special phosphor material that has strong light-absorbing properties in the wavelength range of 460-510 nm. The present invention can reduce the stringent requirements of phosphor FWHM that needs to meet for conventional high NTSC solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.