Patent ID: 9224871
Filing Date: 2015-12-29
Classification: H01L

Abstract:
1. A thin film transistor, comprising: a gate electrode; a first insulating film provided apart form the gate electrode in a first direction; a semiconductor layer provided between the gate electrode and the first insulating film, the semiconductor layer including a first portion, a second portion, and a third portion, the second portion being apart from the first portion in a second direction intersecting the first direction, the third portion being provided between the first portion and the second portion, the semiconductor layer including an amorphous oxide; a gate insulator film provided between the third portion and the gate electrode; a second insulating film provided between the third portion and the first insulating film; a source electrode; a first tunneling insulating portion provided between the first portion and the source electrode, the first tunneling insulating portion including a first compound including oxygen and at least one selected from aluminum and magnesium, a thickness of the first tunneling insulating portion being 2 nanometers or less; a drain electrode; a second tunneling insulating portion provided between the second portion and the drain electrode, the second tunneling insulating portion including a second compound including oxygen and at least one selected from aluminum and magnesium, a thickness of the second tunneling insulating portion being 2 nanometers or less; and a third tunneling insulating portion provided between the first insulating film and the second insulating film, the third tunneling insulating portion including a third compound including oxygen and at least one selected from aluminum and magnesium, a thickness of the third tunneling insulating portion being 2 nanometers or less.