Patent ID: 8567695

Claim:
A piezoelectric device comprising piezoelectric ceramic powder containing 90 parts by weight or more to less than 100 parts by weight of xPb(Mg 1/3 Nb 2/3 )-y(Ni 1/3 Nb 2/3 )-zZr-wTi—O3, where each of x, y, z, and w is mol % and satisfies 0.15≦x≦0.40, 0.05≦y≦0.20, 0.20≦z≦0.35 and 0.30≦w≦0.45, and more than 0 part by weight to 10 parts by weight or less of glass frit, based on 100 parts by weight of a piezoelectric substance composition for the piezoelectric device, wherein the glass frit contains 10 to 20 parts by weight of ZnO, based on 100 parts by weight of glass frit.