Patent ID: 9608193
Date: 2017-03-28
CPC Classifications: H01L,H03H,Y10T

Claim:
1. An acoustic wave device comprising: a piezoelectric substrate made of a piezoelectric crystal having cleavage directions that intersect with each other, the piezoelectric substrate being formed such that four sides of an upper surface of the piezoelectric substrate are parallel to said cleavage directions of the piezoelectric crystal; and a plurality of electrodes that are formed on the upper surface of the piezoelectric substrate and excites an acoustic wave propagating in a propagation direction different from the cleavage directions, each of the plurality of electrodes including electrode fingers and bus bars to which the electrode fingers are coupled, wherein an extending direction of each of the four sides is different from the propagation direction, wherein the plurality of electrodes are arranged in a direction inclined from the four sides of the upper surface of the piezoelectric substrate, and wherein a length of the bus bars of a central electrode among the plurality of electrodes is longer than a length of a shortest side among the four sides.