Image display module with superior white point stability
US10082618B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 13, 2015 |
| Grant date | Sep 25, 2018 |
| Priority date | — |
| Expiry date | Mar 11, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/181
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image display module includes a light emitting device including a nitride semiconductor light-emitting element, as a light source, having an emission peak wavelength in a wavelength range of 240 nm to 560 nm, an Mn4+-activated red fluorescent material having a maximum excitation wavelength in the wavelength range, an emission peak wavelength of 610 nm to 670 nm, and a half bandwidth of the emission spectrum of 30 nm or less, and a green fluorescent material having an emission peak wavelength in a wavelength range of 510 nm to 550 nm; and a color filter having a blue pixel wherein the difference between the maximum and the minimum value of transmittance at a wavelength range of 420 nm to 460 nm of the spectral transmittance curve is 4% or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.