Patent ID: 8695186
Filing Date: 2014-04-15
Classification: H03H,Y10T

Abstract:
1. A method for producing piezoelectric vibrators, comprising: (a) defining a plurality of first substrates on a first wafer and a plurality of second substrates on a second wafer; (b) forming a pair of penetration electrodes through respective at least some of the first substrates on the first wafer; (c) layering the first and second wafers such that at least some of the first substrates substantially coincide respectively with at least some of the corresponding second substrates, with a bonding film sandwiched between the first and second substrates in respective pairs of at least some of coinciding first and second substrates, wherein a piezoelectric vibrating strip is secured in respective pairs of at least some of coinciding first and second substrates; (d) placing on an electrode base portion the first wafer layered with the second wafer, wherein the electrode base portion has at least one area forming at least one gap for avoiding contact with the pair of penetration electrodes of respective at least some of the respective pairs of the first and second substrates; (e) applying a bonding voltage between the electrode base portion and at least some of the bonding films to anodically bond the first and second substrates of at least some of the respective pairs of the first and second substrates.