THIN FILM TRANSISTOR, METHOD OF MANUFACTURING THE THIN FILM TRANSISTOR AND FLAT PANEL DISPLAY DEVICE HAVING THE THIN FILM TRANSISTOR

摘要

PURPOSE: A flat panel display for including a TFT(Thin Film Transistor) for performing an ohmic contact of a metal electrode and an oxide semiconductor layer, and a manufacturing method thereof are provided to form an ohmic contact layer with high carrier concentration by processing the oxide semiconductor layer through a plasma. CONSTITUTION: A gate electrode(14) is formed on a substrate. An oxide semiconductor layer(18a) comprises a channel, a source and a drain region insulated with a gate insulating layer(16). A source and drain electrode are connected to source and drain region. An ohmic contact layer(18b) is allowed in between a source and drain region and source and drain electrode. The ohmic contact layer includes the oxide semiconductor layer with carrier concentration high than source and drain region.