Organic light-emitting display device and method of manufacturing the same

A method of manufacturing an organic light-emitting display device, the method comprising:

• forming an active layer on a substrate;
• sequentially stacking a first insulating layer, a transparent conductive material, and a first metal layer on the active layer, and simultaneously forming a pixel electrode and a gate electrode of a thin film transistor by patterning the transparent conductive material and the first metal layer, the gate electrode comprising the transparent conductive material and the first metal layer;
• forming a second insulating layer on a first resultant structure obtained through the steps of sequential stacking the first insulating layer and the transparent conductive material and the first metal layer and simultaneous forming the pixel electrode and the gate electrode, and forming a first opening exposing the transparent conductive material of the pixel electrode and source and drain regions of the active layer by patterning the second insulating layer;
• forming a second metal layer on a second resultant structure obtained through steps of forming of the second insulating layer and forming of the first opening, and simultaneously forming source and drain electrodes which respectively contact the source and drain regions by patterning the second metal layer, and a light reflector disposed on the transparent conductive material of the pixel electrode, the light reflector comprising a same material as the source electrode and the drain electrode, the light reflector disposed at an upper edge of the pixel electrode;
• forming a third insulating layer on a third resultant structure obtained through steps of the forming of the second metal layer and simultaneous forming the source and drain electrodes and the light reflector, the third insulating layer exposing the transparent conductive material of the pixel electrode, forming an emission layer in a second opening formed within the third insulating layer, with the emission layer being surrounded by the light reflector;
• and forming a counter electrode covering the emission layer.