標題: Improving the Angular Color Uniformity of Hybrid Phosphor Structures in White Light-Emitting Diodes
作者: Chen, Kuo-Ju
Han, Hau-Vei
Lin, Bing-Cheng
Chen, Hsin-Chu
Shih, Min-Hsiung
Chien, Shih-Hsuan
Wang, Kuan Yu
Tsai, Hsin-Han
Yu, Peichen
Lee, Po-Tsung
Lin, Chien-Chung
Kuo, Hao-Chung
光電工程學系
Department of Photonics
關鍵字: Color distribution;light-emitting diodes (LEDs);packaging;phosphor
公開日期: 1-Oct-2013
摘要: This letter examines a hybrid phosphor structure for white light-emitting diodes. The hybrid phosphor structure produces more efficient luminosity and more uniform angular correlated color temperature (CCT) than the conventional dispensing method. The experimental results show that the CCT deviation improved from 453 to 280 K between -70 degrees and 70 degrees. This was likely caused by the large blue light divergent angle. The lumen output produced was higher than that produced by dispense and conformal phosphor structures. Therefore, the results show that the hybrid phosphor structure can be used in solid-state lighting.
URI: http://dx.doi.org/10.1109/LED.2013.2278336
http://hdl.handle.net/11536/22690
ISSN: 0741-3106
DOI: 10.1109/LED.2013.2278336
期刊: IEEE ELECTRON DEVICE LETTERS
Volume: 34
Issue: 10
起始頁: 1280
結束頁: 1282
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