Patent ID: 8710718

Claim:
A sealing member for a piezoelectric resonator device, the piezoelectric resonator device comprising a piezoelectric resonator piece and a plurality of sealing members hermetically sealing a resonance region of the piezoelectric resonator piece, wherein the sealing member comprises a base material having one principal surface and the base material comprises a protruding portion on the one principal surface, wherein the base material has another principal surface having a flat surface and a curved surface, the flat surface being a region corresponding to the protruding portion, the curved surface being a region other than the region of the flat surface, wherein the sealing member comprises a plurality of external terminals on the flat surface, the plurality of external terminals being to be connected to an external circuit board, wherein the sealing member comprises a plurality of inspection terminals only on the curved surface, the plurality of inspection terminals being configured to inspect the piezoelectric resonator piece, wherein the base material has a plurality of via holes passing through between both principal surfaces of the base material, and wherein an alignment of the plurality of via holes is inclined relative to any side of the other principal surface.