Patent ID: 6870710
Filing Date: 2005-03-22
Classification: G11B,H01L,H02N

Abstract:
1. A piezoelectric actuator, characterized in that the piezoelectric actuator comprises: a first rod-shaped driving section that is longitudinally shrunk or elongated when a voltage, is applied thereto or removed therefrom; a second rod-shaped driving section that is disposed in parallel with the first driving section and is longitudinally shrunk or elongated when a voltage is applied thereto or removed therefrom; a first end section to which both of one end of the first driving section and one end, which is located beside the one end of the first driving section, of the second driving section are connected; a first central section connected to the other end of the first driving section of which one end is connected to the first end section; a second central section connected to the other end of the second driving section of which one end is connected to the first end section; a third rod-shaped driving section that extends from the first central section in a direction opposite to the first driving section and is longitudinally shrunk or elongated when a voltage is applied thereto or removed therefrom; a fourth rod-shaped driving section that extends from the second central section in a direction opposite to the second driving section and is longitudinally shrunk or elongated when a voltage is applied thereto or removed therefrom; and a second end section to which the other end of the third driving section than one end connected to the first central section and the other end of the fourth driving section than one end connected to the second central section are connected.