Ring Remote Phosphor Structure for Phosphor-Converted White LEDs

Ming Te Lin, Ming Yao Lin, Kuang Yu Tai, Sheng Chieh Tai, Chih Hsuan Liu, Shang Ping Ying, Jyh Chen Chen, Ching Cherng Sun

研究成果: 雜誌貢獻期刊論文同行評審

68 引文 斯高帕斯(Scopus)

摘要

An efficient packaging configuration for high-power white light-emitting diodes (LEDs), consisting of an inverted cone lens encapsulant and a surrounding ring remote phosphor layer, is present. Ray-tracing simulations demonstrate that the package extraction efficiency of the ring remote phosphor structure exceeds 93%. With the implementation of the ring remote phosphor structure, the ring remote phosphor device has a maximum luminous efficacy of 145 lm/W at 20 mA and a maximum luminous flux of 132 lm at 400 mA. The enhancements are attributed to reduced absorption of the re-emitting yellow light by the LED chip, and the reduction of the trapping light inside the flat remote phosphor layer in normal remote phosphor structure.

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頁(從 - 到)574-576
頁數3
期刊IEEE Photonics Technology Letters
22
發行號8
DOIs
出版狀態已出版 - 15 4月 2010

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