Patent ID: 9666497
Date: 2017-05-30
CPC Classifications: H01L,H03H

Claim:
1. A crystal device comprising: a rectangular substrate, a frame which is provided along an outer circumferential edge of an upper surface of the substrate, an electrode pad which is provided on the upper surface of the substrate, a wiring pattern which is electrically connected to the electrode pad, is provided on the upper surface of the substrate and is narrower than the electrode pad at a position connected to the electrode pad, a crystal element which is mounted on the electrode pad and comprises a crystal blank, the crystal blank comprising a surface facing the upper surface of the substrate, and the surface of the crystal blank being flat, and a lid for air-tight sealing the crystal element, wherein a thickness of the electrode pad in a vertical direction is constant over the whole of the electrode pad and greater than a thickness of the wiring pattern in the vertical direction.