Patent ID: 9553251
Date: 2017-01-24
CPC Classifications: B41J,H01L

Claim:
1. A piezoelectric device comprising: a deformation portion in which a first supporting layer is allowed to bend and deform; a non-deformation portion that is adjacent to the deformation portion, and hinders bending deformation of the first supporting layer; and a piezoelectric element in which a first electrode layer, a piezoelectric layer, and a second electrode layer are sequentially stacked, and makes the first supporting layer bent and deformed, wherein the deformation portion includes a first area in which the piezoelectric element is disposed, a third area adjacent to the non-deformation portion, and a second area which is disposed between the first area and the third area, wherein in the first area, the first supporting layer, a second supporting layer, the first electrode layer, the piezoelectric layer, and the second electrode layer are sequentially stacked, wherein in the second area, the first supporting layer, the second supporting layer, the piezoelectric layer, the second electrode layer are sequentially stacked, wherein in the third area, the first supporting layer and the second electrode layer are sequentially stacked, wherein the first supporting layer is silicon oxide, and wherein in the silicon oxide of the third area, impurities are added to the second electrode layer.