CRYSTAL DEVICE

摘要

A crystal device having electrode lands on a principal surface of a first package member, a crystal oscillator bonded to and held by the electrode lands, a second package member bonded to the principal surface of the first package member by an adhesive layer, a glass layer provided on the principal surface of the first package member, and the glass layer having adhesive spread preventing parts and an extended portion. The adhesive spread preventing parts prevent the adhesive of the adhesive layer from spreading out. The extended portion is extended to reach the lower surfaces of the electrode lands.

主权项

1. A crystal device comprising:
a first package member that has a principal surface and a frame-shaped adhesion area on the principal surface; a frame-shaped glass layer provided on the principal surface of the first package member, the frame-shaped glass layer having an adhesive spread preventing part that is provided in an area between at least a part of a peripheral edge of the frame-shaped adhesion area and a peripheral edge of the principal surface of the first package member, and having an extended portion; an electrode land provided on the extended portion of the frame-shaped glass layer; a crystal oscillator mounted over the principal surface of the first package member, the crystal oscillator being bonded to and held by the electrode land; an adhesive layer in the frame-shaped adhesion area on the principal surface of the first package member; and a second package member attached to the adhesive layer to define a hollow part together with the principal surface of the first package member.