An electronic apparatus is equipped with light emitting elements (21-26) such as LEDs. The light emitting elements are driven by a power supply circuit of the drive device (10) at a high step-up voltage (Vh). The drive device (10) has a multiplicity of constant-current drivers (12-14), a selection circuit...http://www.google.ca/patents/US20040208011?utm_source=gb-gplus-sharePatent US20040208011 - Light emitting element drive device and electronic device having light emitting element
