Patent ID: 7105872
Filing Date: 2006-09-12
Classification: H01L

Abstract:
1. A thin film semiconductor element, comprising: a semiconductor film provided above a substrate; source and drain electrodes coupled to the semiconductor film; and a gate electrode arranged on the semiconductor film with an insulating film interposed therebetween, the gate electrode having a first metal provided at a bottom of the gate electrode, a first Al-based metal provided above the first metal, and a first refractory metal with a higher melting point than that of the first Al-based metal provided above the Al-based metal, the source and drain electrodes having a second metal provided at a bottom of each the source and drain electrodes, a second Al-based metal provided above the second metal, and a second refractory metal with a higher melting point than that of the second Al-based metal provided above the second Al-based metal, and a film thickness of the second Al-based metal being about half of the first Al-based metal.