Patent ID: 8978216
Filing Date: 2015-03-17
Classification: A61B,G01S,G16H,H01L,Y10T

Abstract:
1. A method comprising: dicing single crystal piezoelectric material to form single crystal pieces that are partly separated by plural kerfs, the single crystal piezoelectric material comprising a carrier layer along one side of a body of the single crystal piezoelectric material; filling the kerfs with a kerf filling material to form a single crystal composite; removing the carrier layer; attaching at least one matching layer to the single crystal composite; providing a flex circuit comprising at least one alignment mark disposed on a surface of the flex circuit; aligning the at least one matching layer with the at least one alignment mark on the surface of the flex circuit; and dicing within the kerfs at a predetermined distance from the at least one alignment mark to form separate acoustical stacks from the single crystal composite.