Patent ID: 7310861
Filing Date: 2007-12-25
Classification: H03H,Y10T

Abstract:
1. A method for producing a piezoelectric component containing at least two stacked crystal filters, comprising the following steps: a) providing a substrate; b) producing at least one bottom electrode on the substrate from a first electrically conductive layer applied on the substrate; c) applying a layer stack on the substrate at least in a region of the bottom electrode, in which the layer stack comprises, beginning with a bottommost layer as, a first piezoelectric layer, a second electrically conductive layer, a second piezoelectric layer and a third electrically conductive layer; d) producing at least a first opening in the third electrically conductive layer and the second piezoelectric layer of the layer stack to provide a contact hole for the second electrically conductive layer, and producing second openings in at least the third electrically conductive layer of the layer stack in such a way that at least two stacked crystal filters are produced; e) contact-connecting the third electrically conductive layer.