Patent ID: 7943858
Filing Date: 2011-05-17
Classification: H01G,H05K,Y10T

Abstract:
1. A thin film capacitor comprising: a first electrode; a dielectric layer comprising a first dielectric film formed on the first electrode, the dielectric layer comprising a BiZnNb-based amorphous metal oxide; and a second electrode formed on the dielectric layer, wherein the BiZnNb-based amorphous metal oxide contains a metallic phase bismuth, the dielectric layer comprises a second dielectric film interposed between the first dielectric film and the first electrode, the second dielectric film formed of a BiZnNb-based metal oxide containing a smaller amount of the metallic phase bismuth than the first dielectric film, and the dielectric layer comprises a third dielectric film interposed between the first dielectric film and the second electrode, the third dielectric film formed of a BiZnNb-based metal oxide containing a smaller amount of the metallic phase bismuth than the first dielectric film, wherein the dielectric layer comprising the first, second and third dielectric films is stacked at least twice into a plurality of dielectric layers.