Patent ID: 7385224

Claim:
A thin film transistor comprising: a semiconductor thin film including a source region, a drain region, and a channel region, the semiconductor thin film comprising a peripheral edge and a peripheral portion which is adjacent to the peripheral edge; a gate insulating film formed on a first surface of the semiconductor thin film; a gate electrode formed to be opposite to the semiconductor thin film with the gate insulating film therebetween; a source electrode and a drain electrode electrically connected to the semiconductor thin film; and an insulating film which: (i) is formed on a second surface of the semiconductor thin film, (ii) comprises a peripheral portion covering the peripheral portion of the semiconductor thin film and a peripheral edge having a same shape as the peripheral edge of the semiconductor thin film, and (iii) has contact holes through which at least a part of each of the source region and the drain region is exposed, wherein the source electrode and the drain electrode are connected to the semiconductor thin film through the contact holes.