METHOD FOR IMPROVING DEFECT-FREE RATE OF LED LIGHT SOURCE, PHOSPHOR POWDER, AND LED LIGHT SOURCE

Title:

METHOD FOR IMPROVING DEFECT-FREE RATE OF LED LIGHT SOURCE, PHOSPHOR POWDER, AND LED LIGHT SOURCE

Document Type and Number:

WIPO Patent Application WO/2015/074603

Kind Code:

A1

Abstract:

A method for improving optical performance of an LED light source, a light conversion filter obtained by using the method, and the corresponding LED light source. In the method, an LED chip is packaged by using a light wavelength conversion component, and the light wavelength conversion component is at least provided with two types of light conversion filters with light excitation performance. With the excitation of light rays that are sent by the LED chip and have wavelengths in an ascending order, sent light rays show an opposite change tendency in light intensities of light rays after the light rays are converted by the two types of light conversion filters. The method can reduce the discrete degree of chroma distribution of light transmitted by the LED light source, and improve the defect-free rate of the LED light source.

Inventors:

ZHAO KUN (CN)
WANG SEN (CN)
LUO WEI (CN)

Application Number:

PCT/CN2014/091897

Publication Date:

May 28, 2015

Filing Date:

November 21, 2014

Export Citation:

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Assignee:

SICHUAN SUNFOR LIGHT CO LTD (CN)

International Classes:

H01L33/50

Foreign References:

CN101502174A	2009-08-05
US20080129190A1	2008-06-05
CN102549786A	2012-07-04
US20060045832A1	2006-03-02
US20050001532A1	2005-01-06
CN102192831A	2011-09-21

Other References: