Patent ID: 7674634
Filing Date: 2010-03-09
Classification: H01L

Abstract:
1. A method of producing a semiconductor device comprising: (1) epitaxially forming an electrically conducting thin film layer on a single crystalline substrate having through holes, epitaxially forming, on said electrically conducting thin film layer, ferroelectric single crystalline thin film containing Pb and having a plane (111) in parallel with the surface of the substrate, patterning said electrically conducting thin film layer and said ferroelectric thin film layer to thereby form isolated ferroelectric thin films of a predetermined shape and one electrode of a capacitor of a predetermined shape, forming another electrode of the capacitor on said ferroelectric thin film, and forming part of a circuit of a semiconductor device so as to pass through the holes in said single crystalline substrate, to thereby fabricate a single crystalline substrate comprising a capacitor structure constituted by said ferroelectric thin film containing Pb and a pair of electrodes holding the ferroelectric thin film therebetween, and said part of the circuit of the semiconductor device; (2) fabricating a semiconductor substrate having another circuit of the semiconductor device formed; and (3) bonding said single crystalline substrate to said semiconductor substrate to couple the circuits of the two substrates together.