CIRCUIT FOR DRIVING LIGHT-EMITTING ELEMENT, AND CELLULAR PHONE

摘要

A light-emitting element driving circuit is installed on a second substrate, which is connected via a signal line to a first substrate, on which is mounted a CPU configured to generate an LED drive control signal. The light-emitting element driving circuit includes a pulse generation unit configured to start and stop an operation based on the LED drive control signal and output an LED drive signal when the pulse generation unit is in an active state, an LED oscillator configured to supply a reference pulse signal to the pulse generation unit, and an LED driver unit configured to cause a light-emitting element to perform a flickering operation based on the LED drive signal.