Patent ID: 8907449
Filing Date: 2014-12-09
Classification: H01G,H01L

Abstract:
1. A thin film MIM (metal-insulator-metal) capacitor comprising: a substrate; a lower electrode formed on the substrate; a base metal layer consisting of a base metal which constitutes an upper part of the lower electrode or which constitutes a discrete layer formed on the lower electrode; a dielectric thin film formed on the base metal-containing layer; an upper electrode formed on the dielectric thin film, said upper electrode, said dielectric thin film, and said base metal-containing layer being etched together using a common photo-resist, constituting etched side faces of the upper electrode, the dielectric thin film, and the base metal layer of the upper electrode, the dielectric thin film, and the base metal-containing layer; an insulating oxide side layer covering and continuously extending solely along the etched side faces and ending on an upper surface of the lower electrode, said insulating oxide layer containing metal atoms derived from the base metal-containing layer; and an insulating hydrogen barrier layer covering exposed surfaces of the lower electrode and the insulating oxide side layer.