Patent ID: 7215065
Filing Date: 2007-05-08
Classification: H01L,H03H

Abstract:
1. A surface acoustic wave device comprising: a surface acoustic wave chip having a piezoelectric substrate on which comb-like electrodes and electrode pads are formed; a package housing the surface acoustic wave chip in a cavity so that the surface acoustic wave chip is hermetically sealed in the package, the package having a slanted outer surface; and electrode patterns provided on a bottom surface of the package; the bottom surface of the package being wider than a top surface of the package, the electrode patterns being away from edges of the bottom surface of the package, wherein a ratio W/H ranges from 0.02 to 0.10 where W is half the difference between the length of a first side of the top surface of the package and the length of a second side of the bottom surface of the package parallel to the first side, and H is the height of the package.