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1. (CA2597697) PACKAGE DESIGN FOR PRODUCING WHITE LIGHT WITH SHORT-WAVELENGTH LEDS AND DOWN-CONVERSION MATERIALS

Office : Canada
Application Number: 2597697 Application Date: 20.06.2006
Publication Number: 2597697 Publication Date: 04.01.2007
Grant Number: Grant Date: 02.12.2014
Publication Kind : C
Prior PCT appl.: Application Number:PCTUS2006024210 ; Publication Number: Click to see the data
IPC:
H01L 33/06
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
L
SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
33
Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
02
characterised by the semiconductor bodies
04
with a quantum effect structure or superlattice, e.g. tunnel junction
06
within the light emitting region, e.g. quantum confinement structure or tunnel barrier
CPC:
H01L 33/504
B82Y 10/00
C09K 11/595
C09K 11/642
C09K 11/7734
C09K 11/7774
C09K 11/7777
C09K 11/7792
H05B 33/14
Y02B 20/181
Applicants: RENSSELAER POLYTECHNIC INSTITUTE
Inventors:
Priority Data: 60/693,170 23.06.2005 US
60/698,591 12.07.2005 US
Title: (EN) PACKAGE DESIGN FOR PRODUCING WHITE LIGHT WITH SHORT-WAVELENGTH LEDS AND DOWN-CONVERSION MATERIALS
(FR) CONCEPTION DE CONDITIONNEMENT PRODUISANT UNE LUMIERE BLANCHE AVEC DES DELS DE FAIBLE LONGUEUR D'ONDE ET MATERIAUX DE CONVERSION DE REDUCTION
Abstract: front page image
(EN)


A broad bandwidth light source including: a solid state light emitting device
(102) that generates short wavelength light; and quantum dot material (104)
and phosphor material (106) that are each irradiated by some of the short
wavelength light. The short wavelength light has a spectrum with a first peak
wavelength shorter than about 500nm. The quantum dot material (104) absorbs
some of the short wavelength light and reemits it as long wavelength light
having a spectrum with a second peak wavelength longer than about 600nm. The
phosphor material (106) absorbs some of the short wavelength light and reemits
it as mid wavelength light having a spectrum with a peak wavelength between
the first and second peak wavelengths. The light source is configured such
that some of each light (short, mid, and long wavelength) is emitted
coincidently as a light having a chromaticity value near the blackbody locus
and a color rendering index greater than 80.


Also published as:
KR1020080026529EP1894257JP2008544553US20080105887CN101138104AU2006262152
WO/2007/002234