Patent ID: 8546175

Claim:
A method of manufacturing an organic light-emitting display device, the method comprising: forming a gate electrode on a substrate; forming a gate insulating layer covering the gate electrode on the substrate; forming an active layer on the gate insulating layer; forming an insulating layer covering a channel region of the active layer; forming source and drain electrodes contacting the active layer and formed on the insulating layer; and forming an organic light-emitting diode to be electrically connected to one of the source and drain electrodes, wherein the forming of the insulating layer comprises: forming a first insulating layer covering the channel region of the active layer; and forming a second insulating layer from a metal oxide on the first insulating layer; wherein the forming of the second insulating layer comprises: forming a metal layer on the first insulating layer; and thermal-processing at least the metal layer so as to form a part of the metal layer contacting the first insulating layer as a metal oxide.