Patent ID: 8860037
Filing Date: 2014-10-14
Classification: H01L

Abstract:
1. A thin-film transistor device comprising: a gate electrode formed above a substrate; a gate insulating film formed on the gate electrode; a crystalline silicon thin film that is formed above the gate insulating film and has a channel region, a semiconductor film formed on the crystalline silicon thin film; and a source electrode and a drain electrode that are formed above the channel region, wherein the crystalline silicon thin film has a half-width of a Raman band corresponding to a phonon mode specific to the crystalline silicon thin film of 5.0 cm the crystalline silicon thin film has an average crystal grain size of about 50 nm or more and 300 nm or less, and the crystalline silicon thin film contains crystals that are predominantly oriented in (100) direction among (111) and (100) directions and have an orientation intensity in the (100) direction obtained by electron back-scatter diffraction of 5 or less.