Patent ID: 8030642
Filing Date: 2011-10-04
Classification: H01L

Abstract:
1. An organic TFT comprising: a source electrode and a drain electrode formed on the surface of a substrate; an organic semiconductor layer that includes source and drain regions and a channel region, located on the source and drain electrodes; a gate electrode located above the organic semiconductor layer; a first insulating layer located on the surface of the organic semiconductor layer; a through hole formed in at least a portion of the organic semiconductor layer and the first insulating layer, outside an active region that includes the source and drain regions and the channel region, wherein one end of the through hole is wider than the other end, and wherein the first insulating layer comprises a photoresist comprising at least one of a polyimide resin, an epoxy resin, a hydroxystyrene resin, a phenol resin, a polyphenol resin, or derivatives thereof, wherein the through hole forms a closed curve around the region of the organic semiconductor layer that includes the source and drain regions and the channel region, and wherein the through hole is at least partly filled with a second insulating layer and a portion of the second insulating layer is located below the gate electrode and above the source and drain electrodes, and wherein the first insulating layer is located between the second insulating layer and the organic semiconductor layer; wherein the second insulating layer continuously covers the first insulating layer and a first insulating layer of an adjacent TFT.