发明名称 LED DRIVING DEVICE, ILLUMINATING DEVICE AND DISPLAY DEVICE
摘要 Provided is an LED driving device which can stably reduce brightness of an LED. The LED driving device provided with: a driving voltage switching means (Q1008) for switching between a first driving voltage and a second driving voltage in accordance with a timing signal; and feedback circuits (Q1001 to Q1005) to which any one of the first and second driving voltages is applied and which thereby determine a current flowing through an LED. The feedback circuits are provided with a resistor switching means (Q2001) for switching, in accordance with the timing signal, between resistors (R1001, R1002, and R2001) that determine the current flowing through the LED.
申请公布号 EP2096903(A4) 申请公布日期 2011.04.20
申请号 EP20070830072 申请日期 2007.10.18
申请人 SHARP KABUSHIKI KAISHA 发明人 KATAKAME, HIROKAZU
分类号 G09G3/34;G02F1/13357;G09G3/20;G09G3/32;H01L33/00;H05B33/08;H05B37/02 主分类号 G09G3/34
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