Organic light emitting display device and method of manufacturing organic light emitting display device

A method of manufacturing an OLED device, the method comprising:

• providing a substrate having a first region, and a second region that is located adjacent to the first region;
• forming a first active layer in the first region on the substrate;
• forming a second active layer in the second region on the substrate;
• forming a first gate electrode on the first active layer;
• forming a third gate electrode on the second active layer, the first gate electrode and the third gate electrode having a first thickness;
• forming a preliminary high-k insulation structure on the entire substrate such that the first gate electrode and the third gate electrode are covered;
• forming a preliminary second gate electrode layer on the entire preliminary high-k insulation structure;
• forming a second gate electrode on the first gate electrode, a first high-k insulation structure interposed between the first gate electrode and second gate electrode, and a third gate electrode having a second thickness, which is less than a first thickness, by selectively etching the preliminary second electrode layer and the preliminary high-k insulation structure;
• and
• forming a light emitting structure on the second gate electrode.

An OLED device, comprising:

• a substrate having a semiconductor element region and a capacitor region that is located to the semiconductor element region;
• a semiconductor element in the semiconductor element region on the substrate, wherein the semiconductor element comprises an active layer, a gate electrode having a first thickness, and source and drain electrodes;
• a storage capacitor in the capacitor region on the substrate, wherein the storage capacitor comprises a first conductive pattern having a second thickness greater than the first thickness and a second conductive pattern disposed on the first conductive pattern;
• a high-k insulation structure interposed between the first and second conductive patterns;
• and
• a light emitting structure on the semiconductor element and the capacitor.