Patent ID: 9000304
Filing Date: 2015-04-07
Classification: B81B,H01L,H03H

Abstract:
1. A sealing member for a piezoelectric resonator device, constituting a part of a package for hermetically enclosing a piezoelectric resonator plate inside the piezoelectric resonator device and having a first principal surface on which a piezoelectric resonator plate is to be mounted, wherein the sealing member comprise: a wiring pattern extending from the first principal surface to a second principal surface via an internal face of a through hole formed through a base material constituting the sealing member so as to be coupled to an electrode of the piezoelectric resonator plate, the second principal surface being located opposite the second principal surface; an infill layer filling the through hole and sealing the through hole; a resin material provided on the second principal surface and covering an opening face of the through hole; and an external terminal electrode provided on the second principal surface and electrically coupled to the wiring pattern, wherein the resin material is layered over the second principal surface and the wiring pattern, and the external terminal electrode is layered over the wiring pattern and the resin material, and wherein the external terminal electrode is layered on the wiring pattern at a peripheral area along and lateral to a peripheral edge of a part of a layered portion of the resin material so that the wiring pattern is in direct contact with an outer peripheral edge of the external terminal electrode, and at least a part of the peripheral edge of the resin material is sandwiched and enclosed by the wring pattern and the external terminal electrode.