Patterned structure of REMOTE PHOSPHOR for phosphor-converted white LEDs

被引：155

作者：

Kuo, Hao-Chung ^{[1
,2
]}

Hung, Cheng-Wei ^{[1
,2
]}

Chen, Hsin-Chu ^{[1
,2
]}

Chen, Kuo-Ju ^{[1
,2
]}

Wang, Chao-Hsun ^{[1
,2
]}

Sher, Chin-Wei ^{[4
]}

Yeh, Chia-Chi ^{[1
,2
]}

Lin, Chien-Chung ^{[3
]}

Chen, Cheng-Huan ^{[4
]}

Cheng, Yuh-Jen ^{[5
]}

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, Inst Lighting & Energy Photon, Guiren Township 711, Tainan County, Taiwan

[4] Tsing Hung Univ, Dept Power Mech Engn, Hsinchu 30010, Taiwan

[5] Acad Sinica, Res Ctr Appl Sci, Taipei 11529, Taiwan

来源：

OPTICS EXPRESS | 2011年 / 19卷 / 14期

关键词：

LIGHT-EMITTING-DIODES; COLOR;

D O I：

10.1364/OE.19.00A930

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

High efficiency white light-emitting diodes with superior color-mixing have been investigated. It is suggested that the patterned remote phosphor structure could improve the uniformity of angular-dependent correlated color temperature (CCT) and achieve high chromatic stability in wider operating current range, as compared to the conventional remote phosphor coating structure. In this experiment, we employed a pulse spray coating method to place the patterned phosphor on the package and to leave a window region. The window area, a clear space without coating of the phosphor not only increases the extraction efficiency of blue rays at large angle, but also improves the stability of angular-dependent CCT. Moreover, the CCT deviation could be reduced from 1320 K to 266 K by this patterned remote phosphor method, and the stray blue/yellow light within the package can be effectively reduced and controlled. The design was verified both experimentally and theoretically. (C) 2011 Optical Society of America

引用

页码：A930 / A936

页数：7

共 13 条

[1]

Fan BF, 2007, IEEE PHOTONIC TECH L, V19, P1121, DOI 10.1109/LPT.2007.901098

[2] Conformal phosphor coating using pulsed spray to reduce color deviation of white LEDs [J].

Huang, Hsin-Tao ;

Tsai, Chuang-Chuang ;

Huang, Yi-Pai .

OPTICS EXPRESS, 2010, 18 (13) :A201-A206

[3] Strongly enhanced phosphor efficiency in GaInN white light-emitting diodes using remote phosphor configuration and diffuse reflector cup [J].

Kim, JK ;

Luo, H ;

Schubert, EF ;

Cho, JH ;

Sone, CS ;

Park, YJ .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 2005, 44 (20-23) :L649-L651

[4] Status and future of high-power light-emitting diodes for solid-state lighting [J].

Krames, Michael R. ;

Shchekin, Oleg B. ;

Mueller-Mach, Regina ;

Mueller, Gerd O. ;

Zhou, Ling ;

Harbers, Gerard ;

Craford, M. George .

JOURNAL OF DISPLAY TECHNOLOGY, 2007, 3 (02) :160-175

[5] Design of the Ring Remote Phosphor Structure for Phosphor-Converted White-Light-Emitting Diodes [J].

Lin, Ming-Te ;

Ying, Shang-Ping ;

Lin, Ming-Yao ;

Tai, Kuang-Yu ;

Tai, Sheng-chieh ;

Liu, Chih-Hsuan ;

Chen, Jyh-Chen ;

Sun, Ching-Cherng .

JAPANESE JOURNAL OF APPLIED PHYSICS, 2010, 49 (07) :0721011-0721016

[6] Ring Remote Phosphor Structure for Phosphor-Converted White LEDs [J].

Lin, Ming-Te ;

Ying, Shang-Ping ;

Lin, Ming-Yao ;

Tai, Kuang-Yu ;

Tai, Sheng-Chieh ;

Liu, Chih-Hsuan ;

Chen, Jyh-Chen ;

Sun, Ching-Cherng .

IEEE PHOTONICS TECHNOLOGY LETTERS, 2010, 22 (08) :574-576

[7]

Liu ZY, 2008, 2008 INTERNATIONAL CONFERENCE ON ELECTRONIC PACKAGING TECHNOLOGY & HIGH DENSITY PACKAGING, VOLS 1 AND 2, P386

[8] Optical Analysis of Color Distribution in White LEDs With Various Packaging Methods [J].

Liu, Zongyuan ;

Liu, Sheng ;

Wang, Kai ;

Luo, Xiaobing .

IEEE PHOTONICS TECHNOLOGY LETTERS, 2008, 20 (21-24) :2027-2029

[9]

Narendra N., 2005, P SOC PHOTO-OPT INS, V5941

[10] Extracting phosphor-scattered photons to improve white LED efficiency [J].

Narendran, N ;

Gu, Y ;

Freyssinier-Nova, JP ;

Zhu, Y .

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 2005, 202 (06) :R60-R62

← 1 2 →