ORGANIC THIN FILM TRANSISTOR, FABRICATION METHOD OF THE SAME AND ORGANIC LIGHT EMITTING DISPLAY HAVING THE SAME

摘要

An organic thin film transistor, its manufacturing method and an organic light emitting display device are provided to prevent an organic semiconductor layer by forming a buffer layer between the organic semiconductor layer and a protective layer. A gate electrode(12) is formed on a substrate(10) of an organic thin film transistor, and a gate insulation layer(14) is formed to cover the gate electrode. A source electrode(16) and a drain electrode(18) are formed on the gate insulation layer. An organic semiconductor layer(20), a buffer layer(22) and a protective layer(24) are formed on the source electrode and the drain electrode. The buffer layer is made of an inorganic material. Formation of the buffer layer between the protective layer and the organic semiconductor layer is to prevent the damage of the organic semiconductor layer.