Patent ID: 7839055

Claim:
A flat-plate lamination-type conductive polymer actuator comprising: a first link member for holding ends on one side being made face to face with each other of a first conductive polymer film and a second conductive polymer film; a first fixed frame for holding ends on another side of the first conductive polymer film and the second conductive polymer film; a second link member for holding ends on one side being made face to face with each other of a third conductive polymer film and a fourth conductive polymer film; a second fixed frame for holding ends on another side of the third conductive polymer film and the fourth conductive polymer film; a first electrolyte holding layer disposed between the first conductive polymer film and the third conductive polymer film; and a second electrolyte holding layer disposed between the second conductive polymer film and the fourth conductive polymer film, the first fixed frame and the second fixed frame being placed adjacent to each other, so that the first conductive polymer film and the third conductive polymer film are connected to each other, with the first electrolyte holding layer being interposed therebetween, while the second conductive polymer film and the fourth conductive polymer film are connected to each other, with the second electrolyte holding layer being interposed therebetween, with the first link member being connected to the second link member, wherein by applying an electric potential difference between the first conductive polymer film and the third conductive polymer film, one of the first conductive polymer film and the third conductive polymer film is expanded by a redox reaction, while another thereof is contracted, and by applying an electric potential difference between the second conductive polymer film and the fourth conductive polymer film, one of the second conductive polymer film and the fourth conductive polymer film is contracted by a redox reaction, while another thereof is expanded, and a sum of a contraction displacement in the first fixed frame and a contraction displacement in the second fixed frame is allowed to form a relative displacement between the first fixed frame and the second fixed frame, by connecting the first link member and the second link member.