Patent ID: 7847295
Filing Date: 2010-12-07
Classification: H01L

Abstract:
1. A thin film transistor comprising: a gate electrode; a gate insulating film formed to cover the gate electrode; a semiconductor layer formed over the gate electrode with the gate insulating film interposed therebetween, the semiconductor layer including a channel region; a source electrode and a drain electrode each including a region connected to the semiconductor layer, at least a part of each region being overlapped with the gate electrode; a source electrode and a drain electrode each including a region connected to the semiconductor layer, at least a part of each region of the source and drain electrodes being overlapped with the gate electrode; a first protective film formed to cover the semiconductor layer, the source electrode and the drain electrode, the first protective film including at least one of an organic SOG (spin-on-glass) material, an organic SOD (spin-on-dielectric) material, an inorganic SOG material and an inorganic SOD material, the organic SOD material, the inorganic SOG material, and the inorganic SOD material is directly in contact with the channel region of the semiconductor layer and discharges moisture by heat treatment a second protective film formed to cover the first protective film and suppress moisture out-diffusion.