Patent ID: 6858867

Claim:
A channel-etch thin film transistor including: a gate electrode over a substrate; a gate insulation film extending over said gate electrode and said substrate; an active layer including a channel region over said gate insulation film; source and drain regions on said active layer; a source electrode connected with said source region, and said source electrode including a source electrode primary portion in contact with said source region and a source electrode lead portion extending from said source electrode primary portion; and a drain electrode connected with said drain region, and said drain electrode including a drain electrode primary portion in contact with said drain region and a drain electrode lead portion extending from said drain electrode primary portion, wherein at least one of said source electrode lead portion and said drain electrode lead portion has a side-contact portion in contact directly with a side wall of said active layer, and an averaged width of said side-contact portion is narrower than an averaged width of corresponding one of said source electrode primary portion and said drain electrode primary portion.