Patent ID: 8098461

Claim:
A micro actuator device, comprising: an attachment plate attached to a supporter; a first lower support plate extended from a base end of the first lower support plate coupled to the attachment plate toward a top end of the first lower support plate; a second lower support plate extended in parallel with the first lower support plate from a base end of the second lower support plate coupled to the attachment plate toward a top end of the second lower support plate; a first piezoelectric element on a surface of the first lower support plate and attached to the first lower support plate on a first junction area on the first lower support plate; a second piezoelectric element on a surface of the second lower support plate and attached to the second lower support plate on a second junction area on the second lower support plate; a first upper support plate attached to a surface of the first piezoelectric element on a third junction area of the first upper support plate, comprising the first piezoelectric element between the third junction area and the first junction area, and configured to generate a strain substantially equal to a strain of the first lower support plate when a tensile force of the first piezoelectric element is applied to the first lower support plate; a second upper support plate attached to a surface of the second piezoelectric element on a fourth junction area of the second upper support plate, comprising the second piezoelectric element between the fourth junction area and the second junction area, and configured to generate a strain substantially equal to a strain of the second lower support plate when a tensile force of the second piezoelectric element is applied to the second lower support plate; a first junction plate attached to a surface of the first upper support plate on the top end of the first lower support plate; a second junction plate attached to a surface of the second upper support plate on the top end of the second lower support plate; a first coupling portion extending from a base end of the first coupling portion coupled to the first junction plate toward a top end of the first coupling portion; a second coupling portion in parallel with the first coupling portion from a base end of the second coupling portion coupled to the second junction plate toward a top end of the second coupling portion; and a support plate coupled to the top ends of the first and second coupling portions.