Patent ID: 8319223

Claim:
A thin film transistor substrate, comprising; a substrate; a gate electrode disposed on the substrate; a first insulating layer disposed on the substrate and having a trench exposing the gate electrode: a gate insulating layer disposed on the gate electrode in the trench of the first insulating layer; wherein the gate insulating layer comprises at least one of maleimide-styrene, polyvinylphenol and modified cyanoethylpullulan; an organic semiconductor layer disposed on the gate insulating layer in the trench of the first insulating layer; a source electrode and a drain electrode disposed on the organic semiconductor layer; a passivation layer disposed on the substrate with a contact hole exposing the drain electrode; a pixel electrode disposed on the passivation layer contacting the drain electrode via the contact hole, wherein the gate electrode and the gate insulating layer are disposed within the trench.