GaN green LED drive device and optical transmission device

Details GaN green LED drive device and optical transmission device GaN green LED drive device and optical transmission device

2005-11-01

2005-11-01

Hjerpe, Richard (Department: 2675)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

Reexamination Certificate

active

06961033

ABSTRACT:
The invention provides a GaN green LED drive device comprising: a bias current output unit for outputting a pulse-like bias current having a low level higher by a predetermined value than a zero level; and a peaking unit for peaking the bias current outputted from the bias current output unit to make rise of the bias current higher than a high level and make fall of the bias current lower than the low level to thereby obtain a peaked bias current supplied to a GaN green LED. The bias current is peaked while the low level of the bias current is set at a higher value (10 mA) than that in the related art. Hence, the fall time tfbecomes 6.6 nsec. The fall time tfcan be shortened greatly compared with that in the related art.

REFERENCES:
patent: 4295226 (1981-10-01), Dombrowski
patent: 5843590 (1998-12-01), Miura et al.
patent: 6728494 (2004-04-01), Numata et al.

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