Patent ID: 8497893

Claim:
A semiconductor device comprising: a substrate; a three-terminal light emitting element array provided on said substrate and including a plurality of three-terminal light emitting elements which are substantially linearly arranged, each of said plurality of three-terminal light emitting elements including a first terminal, a second terminal and a third terminal, said third terminal being used to control a current between said first and second terminals; and a lead-out wiring portion connected to said plurality of three-terminal light emitting elements; wherein said three-terminal light emitting element array includes a common layer formed of a semiconductor layer and provided across two or more three-terminal light emitting elements adjacent to each other, said common layer mutually connecting said second terminals of said two or more three-terminal light emitting elements; wherein a plurality of electrodes are provided between mutually adjacent three-terminal light emitting elements, said electrodes connecting said lead-out wiring portion and said common layer; and wherein all of said three-terminal light emitting elements are equally distanced from said electrodes adjacent thereto.