Development of Light Sources by Large-Scale Integrated Light-Emitting Diodes

Development of Light Sources by Large-Scale Integrated Light-Emitting Diodes

We have demonstrated large-scale integrated light-emitting diodes (LSILEDs) by using direct flip-chip bonding (DFCB) technique on a size of 30 × 40 mm2 ceramic package. Radiant flux measured at DC current of 9.1 A and forward voltage of 4.0 V was 3.3 W. Luminous flux, luminous efficacy and color-ren...

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Veröffentlicht in:Journal of Light & Visual Environment 2008, Vol.32(2), pp.238-240
Hauptverfasser: MIYACHI, Tsutomu, SAKUTA, Hiroaki, KAMON, Kunihito, HAYASHI, Hideki, FUKUI, Takeshi, NAKAMURA, Nobutaka, UCHIDA, Yuji, KURAI, Satoshi, TAGUCHI, Tsunemasa
Format: Artikel
Sprache:eng
Schlagworte:
external quantum efficiency
high luminous flux
LSI
luminous efficacy
white LED
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Zusammenfassung:We have demonstrated large-scale integrated light-emitting diodes (LSILEDs) by using direct flip-chip bonding (DFCB) technique on a size of 30 × 40 mm2 ceramic package. Radiant flux measured at DC current of 9.1 A and forward voltage of 4.0 V was 3.3 W. Luminous flux, luminous efficacy and color-rendering index of white LED fabricated with the LSILED as the excitation source measured at DC current of 9.1 A and forward voltage of 4.0 V was 766 lm, 21.0 lm/W, and 82, respectively. The LSILED is very promising as a compact, high dense and high luminous flux white light source.
ISSN:0387-8805
1349-8398
DOI:10.2150/jlve.32.238