发明名称 LED DRIVING DEVICE, ILLUMINATING DEVICE AND DISPLAY DEVICE
摘要 <p>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.</p>
申请公布号 EP2096903(A1) 申请公布日期 2009.09.02
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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