標題: An Investigation of the Optical Analysis in White Light-Emitting Diodes With Conformal and Remote Phosphor Structure
作者: Chen, Kuo-Ju
Chen, Hsin-Chu
Lin, Chien-Chung
Wang, Chao-Hsun
Yeh, Chia-Chi
Tsai, Hsin-Han
Chien, Shih-Hsuan
Shih, Min-Hsiung
Kuo, Hao-Chung
光電工程學系
Department of Photonics
關鍵字: GaN;light-emitting diodes (LEDs);optical simulation;phosphor
公開日期: 1-Nov-2013
摘要: An effective emission model of phosphor film is proposed by using bidirectional scattering distribution function system (BSDF), and the model is verified by white light-emitting diodes (LEDs) with conformal and remote phosphor structure. The emission model is built to clarify the optical characteristics by analyzing the angular-dependent distribution of emission and excitation behaviors in phosphor film. The white LEDs with conformal and remote phosphor structure are also fabricated for experimental comparison. The uniformity of angular correlated color temperature (CCT) in white LEDs can be determined by the angular distribution of blue and yellow light, which is in turns decided by the refractive index variation between chip a (c) nd phosphor layers. Finally, the experimental results are found to have good agreement with the simulation results performing by the Monte Carlo method.
URI: http://dx.doi.org/10.1109/JDT.2013.2272644
http://hdl.handle.net/11536/23291
ISSN: 1551-319X
DOI: 10.1109/JDT.2013.2272644
期刊: JOURNAL OF DISPLAY TECHNOLOGY
Volume: 9
Issue: 11
起始頁: 915
結束頁: 920
Appears in Collections:Articles


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