標題: Patterned structure of REMOTE PHOSPHOR for phosphor-converted white LEDs
作者: Kuo, Hao-Chung
Hung, Cheng-Wei
Chen, Hsin-Chu
Chen, Kuo-Ju
Wang, Chao-Hsun
Sher, Chin-Wei
Yeh, Chia-Chi
Lin, Chien-Chung
Chen, Cheng-Huan
Cheng, Yuh-Jen
照明與能源光電研究所
光電工程學系
光電工程研究所
Institute of Lighting and Energy Photonics
Department of Photonics
Institute of EO Enginerring
公開日期: 4-七月-2011
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
URI: http://dx.doi.org/10.1364/OE.19.00A930
http://hdl.handle.net/11536/21714
ISSN: 1094-4087
DOI: 10.1364/OE.19.00A930
期刊: OPTICS EXPRESS
Volume: 19
Issue: 14
起始頁: 0
結束頁: 0
顯示於類別:期刊論文


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