Patent ID: 9508866
Filing Date: 2016-11-29
CPC Classification: H01L

Claim Text:
1. A thin-film transistor comprising: a gate electrode; a channel layer disposed above the gate electrode and not adjacent to the gate electrode; a channel protection layer covering a portion of the channel layer and exposing a portion of the channel layer; a source electrode that is in contact with the channel layer at a source contact region that is a portion of an exposed portion of the channel layer; and a drain electrode that is not adjacent to the source electrode and is in contact with the channel layer at a drain contact region that is a portion of the exposed portion, the drain contact portion being different from the source contact region, wherein the channel layer includes oxide semiconductor, a surface of the channel protection layer includes an upper surface and a side surface that extends from the upper surface to the exposed portion, the drain electrode has: the upper surface covering portion has a facing portion that faces a channel region that is a region of the channel layer interposed between the source contact region and the drain contact region, and the facing portion has a length that is smaller than or equal to 2.5 μm in a channel length direction in which a straight line that connects the source contact region with the drain contact region along a shortest distance therebetween extends.