Patent ID: 6946801

Claim:
An organic EL element drive circuit for current-driving any one of organic EL elements of an organic EL display panel by an output current supplied from a current output circuit constructed with a current-mirror circuit through a corresponding terminal pin of said organic EL display panel, comprising: a plurality (n) of unit circuits each including a first MOS transistor of a certain channel type and a second MOS transistor of the same channel type and having a source connected to a drain of said first MOS transistor, where n is an integer equal to or larger than 3, gates of either said first MOS transistors or said second MOS transistors of at least two of said n unit circuits being connected to each other to form a common gate, one of said at least two unit circuits constituting an input side circuit of said current mirror circuit, the other of said at least two unit circuit constituting an output side of said current mirror circuit, said common gate being connected to a current drive side terminal of said input side circuit through one of said first MOS transistor and said second MOS transistor of at least one of the remaining unit circuits.