Patent ID: 7586469

Claim:
An integrated organic EL drive circuit for driving an organic EL panel with drive currents generated correspondingly to terminal pins of said organic EL panel on a basis of a reference current generated by a reference current generator circuit, comprising: a first input terminal supplied with a current externally of said integrated organic EL drive circuit, the current being in phase with the reference current and having a value corresponding to a value of the reference current; an output terminal; a reference current selector circuit for selecting either the current or the reference current; a current inverter circuit for inverting a phase of an output of said reference current selector circuit with respect to the reference current; and a current mirror circuit including an input side transistor, a plurality of first output side transistors and a second output side transistor, said current mirror circuit responsive to an output current of said current inverter circuit, for generating the drive currents or currents, which is in phase with the reference current and from which the drive currents are obtained, at the plurality of said first output side transistors, said second output side transistor for outputting a current, which is in phase with the reference current and has values substantially equal to a value of the current selected by said reference current selector circuit, to said output terminal.