Patent ID: 8658460
Filing Date: 2014-02-25
Classification: H01L

Abstract:
1. A method of manufacturing an organic light-emitting display device, the method comprising: forming a semiconductor active layer on a substrate; forming a gate insulating layer on the substrate and the semiconductor active layer; forming a gate electrode comprising a lower gate electrode on the gate insulating layer and an upper gate electrode on the lower gate electrode; forming a source region and a drain region at the semiconductor active layer using the gate electrode as a mask; forming an interlayer insulating layer on the substrate and etching the interlayer insulating layer, resulting in contact holes that expose portions of the source region and the drain region; forming a source/drain electrode raw material on the substrate and etching the source/drain electrode raw material to form a source electrode and a drain electrode; after forming the source electrode and drain electrode, forming a gate-overlapped lightly doped drain (GOLDD) structure having a lightly doped drain (LDD) region at the semiconductor active layer by injecting impurity ions; depositing a protective layer on the substrate; and forming a display device on the substrate.