標題: Large-area, uniform white light LED source on a flexible substrate
作者: Sher, Chin-Wei
Chen, Kuo-Ju
Lin, Chien-Chung
Han, Hau-Vei
Lin, Huang-Yu
Tu, Zong-Yi
Tu, Hsien-Hao
Honjo, Keiji
Jiang, Hsin-Yi
Ou, Sin-Liang
Horng, Ray-Hua
Li, Xiuling
Fu, Chien-Chung
Kuo, Hao-Chung
光電系統研究所
光電工程學系
光電工程研究所
Institute of Photonic System
Department of Photonics
Institute of EO Enginerring
公開日期: 21-Sep-2015
摘要: This study demonstrates the flexible white LED structure with high lumen efficiency and uniform optical performance for neutral white and warm white CCT. Flip-chip LEDs were attached on a polyimide substrate with copper strips as electrical and thermal conduction paths. Yellow phosphors are mixed with polydimenthysiloxane (PDMS) to provide mechanical support and flexibility. The light efficiency of this device can reach 120 lm/W and 85% of light output uniformity of the emission area can be achieved. Moreover, the optical simulation is employed to evaluate various designs of this flexible film in order to obtain uniform output. Both the pitch between the individual devices and the thickness of the phosphor film are calculated for optimization purpose. This flexible white LED with high lumen efficiency and good reliability is suitable for the large area fixture in the general lighting applications. (C) 2015 Optical Society of America
URI: http://dx.doi.org/10.1364/OE.23.0A1167
http://hdl.handle.net/11536/129431
ISSN: 1094-4087
DOI: 10.1364/OE.23.0A1167
期刊: OPTICS EXPRESS
Volume: 23
Issue: 19
起始頁: 0
結束頁: 0
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