標題: Improvement of emission uniformity by using micro-cone patterned PDMS film
作者: Liu, Che-Yu
Chen, Kuo-Ju
Lin, Da-Wei
Lee, Chia-Yu
Lin, Chien-Chung
Chien, Shih-Hsuan
Shih, Min-Hsiung
Chi, Gou-Chung
Chang, Chun-Yen
Kuo, Hao-Chung
光電系統研究所
電子工程學系及電子研究所
Institute of Photonic System
Department of Electronics Engineering and Institute of Electronics
公開日期: 24-二月-2014
摘要: Micro-patterned PDMS film was fabricated and combined with LED chip on board (COB) package to improve the emission uniformity of LED chip. The micro scale patterned sapphire substrate (PSS) was used as a mold to fabricate micro-cone patterned PDMS (MC-PDMS) film. A strong scattering effect from this MC-PDMS film can be verified by the high haze ratio and the Bi-directional Transmission effect. The angle dependent color temperature measurement system was used to measure the Delta CCT of COB with and without MC-PDMS. The measurement results indicate that the Delta CCT was reduced from 1025K to 428K. This improvement can effectively eliminate the yellow ring effect of LED chip. This technology can be thus considered as a cost-effective way for the next generation of light source packages. (C) 2014 Optical Society of America
URI: http://dx.doi.org/10.1364/OE.22.004516
http://hdl.handle.net/11536/24029
ISSN: 1094-4087
DOI: 10.1364/OE.22.004516
期刊: OPTICS EXPRESS
Volume: 22
Issue: 4
起始頁: 4516
結束頁: 4522
顯示於類別:期刊論文


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