An organic transistor includes a gate electrode having a predetermined
length, source and drain electrodes overlapping the gate electrode in
plan view, a channel region formed of the organic semiconductor between
the source and drain electrodes, and a functional portion disposed on a
first side of the gate electrode in a length direction thereof and
connected to the drain electrode through a strip-like connection wiring
line. A strip-like dummy connection wiring line is connected to the drain
electrode so as to extend toward a second side of the gate electrode in
the length direction thereof and has a width that is less than twice the
width of the connection wiring line. The connection wiring line extends
to or beyond an edge of the gate electrode on the first side, and the
dummy connection wiring line extends to or beyond an edge of the gate
electrode on the second side.