Conformal phosphor coating using pulsed spray to reduce color deviation of white LEDs

被引：75

作者：

Huang, Hsin-Tao ^{[1
,2
]}

Tsai, Chuang-Chuang ^{[1
,3
]}

Huang, Yi-Pai ^{[1
,3
]}

机构：

[1] Natl Chiao Tung Univ, Dept Photon, Hsinchu 30010, Taiwan

[2] Natl Chiao Tung Univ, Inst Electroopt Engn, Hsinchu 30010, Taiwan

[3] Natl Chiao Tung Univ, Display Inst, Hsinchu 30010, Taiwan

来源：

OPTICS EXPRESS | 2010年 / 18卷 / 13期

关键词：

Chemical pollution - Color deviations - Color distribution - Color temperatures - Mechanical principles - Optical qualities - Phosphor layers - Planar illumination;

D O I：

10.1364/OE.18.00A201

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

This work presents a novel "pulsed spray (PS)" process for the coating of yellow YAG:Ce3+ phosphor on blue InGaN-based light emitting diodes (LEDs). To coat a phosphor layer of high quality on an LED chip surface, the PS approach is used and studied because of the uniform color distribution, providing a wide range of color temperatures. This PS coating approach applies phosphor by exploiting mechanical principles without risk of chemical pollution. Additionally, it can be applied to wire-bonded LEDs and an array of LED chips on a substrate to fabricate a large-area, planar illumination system of high optical quality, which is easy to manufacture. (C) 2010 Optical Society of America

引用

页码：A201 / A206

页数：6

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