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    • 33. 发明授权
    • GaN green LED drive device and optical transmission device
    • GaN绿色LED驱动器件和光传输器件
    • US06961033B2
    • 2005-11-01
    • US10303854
    • 2002-11-26
    • Shigeru FukumotoSatoru KatoHiroshi Ito
    • Shigeru FukumotoSatoru KatoHiroshi Ito
    • G09G3/32H01L33/00H01L33/32H04B10/40H04B10/50H04B10/524H04B10/60
    • H04B10/502
    • 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 tf becomes 6.6 nsec. The fall time tf can be shortened greatly compared with that in the related art.
    • 本发明提供一种GaN绿色LED驱动装置,包括:偏置电流输出单元,用于输出具有低于零电平的预定值的低电平的脉冲状偏置电流; 以及峰值单元,用于使从偏置电流输出单元输出的偏置电流达峰化,使偏置电流的上升高于高电平,并使偏置电流的下降低于低电平,从而获得提供给偏置电流的峰值偏置电流 GaN绿色LED。 当偏置电流的低电平被设置在比现有技术中更高的值(10mA)时,偏置电流达到峰值。 因此,下降时间t 为6.6ns。 与现有技术相比,可以大大缩短坠落时间t。。。