
Proceedings Paper
Recent progress and future prospect of high-performance near-UV based white LEDs: from ECO lighting to medical applicationFormat | Member Price | Non-Member Price |
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Paper Abstract
Near ultraviolet (n-UV) LED-based white light source (LS) can provide the excellent
illuminant properties that show high-luminous efficacy (Le>80 lm/W) of radiation and
high-color rendering index (CRI or Ra>99). Recent progress and future advantages of the n-UV
white LED technology on the basis of our direct flip-chip bonding and stacked multi-layer
structure methods will be described. Particularly, the fabrication process, and electrical and
illuminant properties in the low-correlated color temperature (CCT or Tc~3452K) white LED
with a high-luminous flux (~500 lm/PKG) are discussed, and its lighting and medical
applications such as ecological street lighting and gastrointestinal digestive endoscope will be
introduced. Furthermore, a color tunable white LS which is composed of multi-phosphor
conversion LEDs and its characterization are described. Differences on the quality of light
between the n-UV white LED and the conventional blue-YAG white LED will be clarified.
Paper Details
Date Published: 18 August 2009
PDF: 15 pages
Proc. SPIE 7422, Ninth International Conference on Solid State Lighting, 74220B (18 August 2009); doi: 10.1117/12.829225
Published in SPIE Proceedings Vol. 7422:
Ninth International Conference on Solid State Lighting
Ian T. Ferguson; Christoph Hoelen; Jianzhong Jiao; Tsunemasa Taguchi, Editor(s)
PDF: 15 pages
Proc. SPIE 7422, Ninth International Conference on Solid State Lighting, 74220B (18 August 2009); doi: 10.1117/12.829225
Show Author Affiliations
Tsunemasa Taguchi, Yamaguchi Univ. (Japan)
Published in SPIE Proceedings Vol. 7422:
Ninth International Conference on Solid State Lighting
Ian T. Ferguson; Christoph Hoelen; Jianzhong Jiao; Tsunemasa Taguchi, Editor(s)
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