Patent ID: 9461235
Filing Date: 2016-10-04
CPC Classification: H01L,H03H

Claim Text:
1. An elastic wave device comprising: a piezoelectric substrate; a comb-shaped electrode disposed above an upper surface of the piezoelectric substrate; wiring connected to the comb-shaped electrode; a cover disposed above the upper surface of the piezoelectric substrate, covering the comb-shaped electrode and defining a space between the upper surface of the piezoelectric substrate and the cover; a first electrode disposed above an upper surface of the cover; a sealing resin disposed above the upper surface of the piezoelectric substrate and covering the cover and the first electrode; a terminal electrode disposed above an upper surface of the sealing resin; and a second electrode passing through the sealing resin and electrically connecting the first electrode with the terminal electrode, the first electrode and the second electrode being made of a metal film produced by electro-plating, and a diameter of plating particles of the first electrode being larger than a diameter of plating particles of the second electrode.