Patent ID: 6963155
Filing Date: 2005-11-08
Classification: H03H,Y10T

Abstract:
1. A wafer having a plurality of acoustical wave devices formed thereon and exhibiting common operational characteristics, each of said acoustical wave devices comprising: a ground electrode formed on the wafer; a piezoelectric thin film formed on the ground electrode, wherein the piezoelectric thin film varies in at least one characteristic across the wafer; and at least one upper electrode formed on the piezoelectric thin film; wherein at least the ground electrode, the piezoelectric thin film and the at least one upper electrode form components in each of the plurality of acoustical wave devices; and wherein at least one component in some of the plurality of acoustical wave devices is modified in its operational characteristic to compensate for the variation in the at least one characteristic of the piezoelectric thin film and is based on the location of the at least one acoustical wave devices on the wafer.