THIN FILM TRANSISTOR, A METHOD FOR MANUFACTURING THE SAME AND AN ORGANIC LIGHT EMITTING DISPLAY DEVICE INCLUDING THE SAME, CAPABLE OF PREVENTING AN IMPURITY ON A SUBSTRATE FROM INTRUDING INTO THE DEVICE

摘要

PURPOSE: A thin film transistor, a method for manufacturing the same and an organic light emitting display device including the same are provided to protect the device from damaging by forming a protective layer which includes an inorganic clay of which sodium cation is removed on a substrate.;CONSTITUTION: A protective layer(105) which includes a clay with amine is arranged on a substrate. A buffer layer is arranged on the protective layer. A semiconductor layer(120) is arranged on the buffer layer. A gate electrode(140) is arranged on the semiconductor layer. A gate insulation layer(130) insulates the semiconductor layer from the gate electrode. A source/drain electrode(150a, 150b) is insulated from the gate electrode and is connected to the semiconductor layer.;COPYRIGHT KIPO 2010