Patent ID: 8378352
Filing Date: 2013-02-19
Classification: H01L

Abstract:
1. An organic light-emitting display device comprising: an active layer of a thin film transistor and a bottom capacitor electrode formed over a substrate, wherein the bottom capacitor electrode includes a semiconductor material that is formed on the same layer as the active layer and doped with ion impurities; a first insulation layer formed over the substrate to cover the active layer and the bottom capacitor electrode; a gate electrode formed over the first insulation layer, wherein the gate electrode comprises a first gate electrode and a second gate electrode that are sequentially stacked on the first insulation layer, wherein the first gate electrode comprises a transparent conductive material, and the second gate electrode comprises a metal; a pixel electrode that is formed on the first insulation layer, wherein the pixel electrode comprises a transparent conductive material, and a top capacitor electrode that is formed on the same layer as the pixel electrode, wherein the top capacitor electrode comprises a transparent conductive material; source and drain electrodes of the thin film transistor that are electrically connected to the active layer; a second insulation layer that is formed between the first insulation layer and the source and drain electrodes and includes a first contact hole exposing the entire top capacitor electrode; a third insulation layer that is formed on the second insulation layer and exposes the pixel electrode; an emissive layer formed over the pixel electrode; and an opposite electrode disposed over and facing the pixel electrode, wherein the emissive layer is disposed between the pixel electrode and the opposite electrode.