Patent ID: 8168979

Claim:
A thin film transistor comprising: a substrate; a non-single crystal semiconductor thin film directly or indirectly formed on the substrate; a crystal grain which is grown in a lateral direction from a crystal seed provided on the semiconductor thin film and crystallized in a longer shape in a crystal growth direction <110> than in a width direction, an average grain width of the crystal grain is in the range of 0.2 μm to 0.8 μm; a crystal grain array in which the crystal grains are aligned adjacently in the width direction; and a source region and a drain region formed such that current flows across a plurality of the crystal grains of the crystal grain array in the crystal growth direction <110>, a channel region provided between the source region and the drain region, wherein a crystal orientation of a plane of each of the crystal grains formed in the channel region is {001} to {112}.