Patent ID: 8274723
Filing Date: 2012-09-25
Classification: G02B,H01L

Abstract:
1. A piezoelectric transducer element comprising: a base body which includes a fixing part and a movable part which are connected with each other; a lower electrode which is formed on a surface of the base body; a piezoelectric body which is formed in a stacked manner in a state where the piezoelectric body extends between and over the fixing part and the movable part of the base body; and an upper electrode which is formed on a surface of the piezoelectric body on a side opposite to the base body, wherein the piezoelectric body is configured to convert a change in potential between the lower electrode and the upper electrode into mechanical displacement of the movable part relative to the fixing part or the mechanical displacement into the change in potential, and the upper electrode includes a pad electrode for connection which is formed above the fixing part, and the lower electrode is not formed in a region above the fixing part and below the pad electrode.