Patent ID: 7556991

Claim:
A method for manufacturing a thin film transistor in which a gate electrode, a semiconductor layer, and a source electrode and a drain electrode both of which are coupled to the semiconductor layer, are fabricated on a substrate, the method comprising: forming a precursor of a first bank corresponding to a region to form the gate electrode on the substrate with one of a polysilazane liquid, a polysilane liquid, and a polysiloxane liquid; forming a precursor of a second bank corresponding to a region to form the source electrode and the drain electrode on a predetermined position of the precursor of the first bank with one of a polysilazane liquid, a polysilane liquid, and a polysiloxane liquid by using a droplet discharge method; firing the precursor of the first bank and the precursor of the second bank together so as to together form the first bank and the second bank both of which are made of an inorganic layer having polysiloxane as a skeleton; providing a functional liquid containing a conductive material to a region partitioned by one of the precursor of the first bank and the first bank formed from the precursor by using a droplet discharge method so as to form the gate electrode; forming a semiconductor layer on a part located immediately above the gate electrode in a region partitioned by the second bank with an insulation film between the semiconductor layer and the part; and providing a functional liquid containing a conductive material to a region partitioned by the second bank by using a droplet discharge method so as to form the source electrode and the drain electrode both of which are coupled to the semiconductor layer.