Patent ID: 9608194
Date: 2017-03-28
CPC Classifications: G01L,G03B,H01L,Y10T

Claim:
1. A piezoelectric device being a sintered body, comprising: a main body part comprising a part made of a piezoelectric material, the main body part having a surface comprising a flat top surface part, a flat bottom surface part, and a side surface part connecting the flat top surface part to the flat bottom surface part; a top surface electrode that covers at least a part of the flat top surface part of the main body part; a bottom surface electrode that covers at least a part of the flat bottom surface part of the main body part; and a side surface electrode that covers at least a part of the side surface part of the main body part and connects the top surface electrode to the bottom surface electrode, wherein Tb/Ta is 1.0 to 5.0, where Ta represents a thickness at a part of the side surface electrode where the thickness becomes minimum, and Tb represents a thickness at a part of the side surface electrode where a radius of curvature of a surface thereof becomes minimum.