Patent ID: 7294905

Claim:
A thin film capacitor comprising: a substantially circular or rectangular lower electrode formed on a surface, the substantially circular or rectangular lower electrode having one or more end portions with one or more side faces; a dielectric layer formed on the substantially circular or rectangular lower electrode, the dielectric layer having one or more end portions with one or more side faces; and an upper electrode formed on the dielectric layer, the dielectric layer covering all of the end portions of the substantially circular or rectangular lower electrode and all of the side faces of the end portions thereof, the dielectric layer further covered by an insulator other than the dielectric layer, the insulator covering all of the end portions and all of the side faces of the dielectric layer, wherein the insulator is provided with an opening, an end portion of the opening is formed inside the end portion of the substantially circular or rectangular lower electrode and the upper electrode is formed in the opening, such that a relationship between an area of the dielectric layer, the substantially circular or rectangular lower electrode, a portion of the substantially circular or rectangular lower electrode not covered by the insulator, and the upper electrode is: area of dielectric layer>area of substantially circular or rectangular lower electrode>area of portion of the substantially circular or rectangular lower electrode not covered by the insulator>area of upper electrode.