Patent ID: 8436342
Filing Date: 2013-05-07
Classification: H01L

Abstract:
1. A method of manufacturing an organic light emitting display device, comprising: preparing a substrate that includes a first region and a second region; forming gate electrodes of first and second thin film transistors respectively in the first and second regions on the substrate; forming a gate insulating layer on the gate electrodes formed in the first and second regions; forming a first activation layer in a structure where a first semiconductor layer and a second semiconductor layer are stacked on the gate insulating layer in the first region, the first oxide semiconductor layer having a higher carrier concentration compared to that of the second oxide semiconductor layer, and forming a second activation layer formed of the second oxide semiconductor layer on the gate insulating layer in the second region; forming source and drain electrodes to be electrically and physically coupled to the first and second activation layers respectively disposed in the first and second regions; forming an insulating layer on the second thin film transistor and then forming a via hole in order that one of the source and drain electrodes of the second thin film transistor is exposed; and forming an organic light emitting diode that comprises a first electrode formed on the insulating layer in the second region and the first electrode electrically coupled to one of the source and drain electrodes of the second thin film transistor through the via hole, an organic light emitting layer formed on the first electrode, and a second electrode formed on the organic light emitting layer.