DRIVING CIRCUIT, LIGHT EMISSION DISPLAY DEVICE, AND SEMICONDUCTOR INTEGRATED CIRCUIT

摘要

PROBLEM TO BE SOLVED: To provide a driving circuit capable of decreasing current variation quantity and suppressing ringing and radiation noise. SOLUTION: The driving circuit is equipped with a PWM (pulse width modulation) control circuit 25, a distributing circuit 23 which outputs current gradation data DAD1 corresponding to a count value QD obtained from the PWM control circuit 25, a current gradation circuit 24 which outputs a current gradation signal AS corresponding to the current gradation data DAD1, and an output circuit 26 which outputs a pulse current OUTa which has its pulse width brought under gradation control according to a pulse signal PS obtained from the PWM control circuit 25 and also has its pulse height brought under gradation control according to the current gradation signal AS. COPYRIGHT: (C)2004,JPO&NCIPI