Light emitting element driving circuit and light emitting device having the same

摘要

A light emitting element driving circuit dwhich drives a light emitting element including the following. A drive transistor (33) is coupled to a power supply voltage (VCC) and is provided on a side of an anode of the light emitting element. The drive transistor receives an input signal and supplies the light emitting element with a pulse current (Ip) and a bias current (Ib). A cathode of the light emitting element is connected to a lower potential (GND) than the power supply voltage.