Patent ID: 8212299
Filing Date: 2012-07-03
Classification: C23C,G11C,H01L

Abstract:
1. A semiconductor device comprising a transistor having source and drain regions and a capacitor, said capacitor being of a MIM (metal-insulator-metal) structure and having a lower metal electrode connected through a metal plug to one of the source and drain regions of said transistor, a capacitor dielectric film formed on said lower metal electrode and an upper metal electrode formed on said capacitor dielectric film, said capacitor dielectric film being formed of a dielectric material which is selected from the group consisting of ZrO 2 , HfO 2 , (Zr x , Hf 1−x )O 2 (0<x<1), (Zr y , Ti 1−y )O 2 (0<y<1), (Hf z , Ti 1−z )O 2 (0<z<1), and (Zr k , Ti l , Hf m )O 2 (0<k, l, m<1, k+l+m=1), and said capacitor dielectric film having a film thickness of 5 to 15 nm.