DRIVING DEVICE FOR UNIT PIXEL OF ORGANIC LIGHT EMITTING DISPLAY AND METHOD OF MANUFACTURING THE SAME

摘要

A driving device for an unit pixel of an organic light emitting display and a method for manufacturing the same are provided to improve reliability and production yield by forming each channel of a switching transistor and a driving transistor in one process simultaneously. A driving device for an unit pixel of an organic light emitting display includes a switching transistor(101) and a driving transistor(102) which are coupled to each other. The switching transistor has a first dual channel layer(27a), a first gate electrode(20). The first dual channel has a first amorphous silicon layer(24a) and a first poly-crystal silicon layer(26a) which are sequentially stacked. The first gate electrode is formed on a lower part of the first dual channel layer, and is a counter part of the first amorphous silicon layer. The driving transistor has a second dual channel layer(27b), a second gate electrode(60). The second dual channel has a second amorphous silicon layer(24b) and a second poly-crystal silicon layer(26b) which are sequentially stacked. The second gate electrode is formed on a lower part of the second dual channel layer, and is a counter part of the second amorphous silicon layer.