Patent ID: 7917200
Filing Date: 2011-03-29
Classification: B81B,Y10S

Abstract:
1. A polymer linear actuator for a micro electro mechanical system (MEMS), comprising: first and second bodies positioned spaced apart to a distance from each other; and one or more pairs of V-type moving units connecting the first and second bodies together, wherein the moving units in pair are opposed to each other to convert a rotation motion of the respective moving units into a linear motion, thereby causing the first and second bodies to move linearly, wherein the moving units in pair includes: a polymer joint part having a trapezoid in cross-sectional shape, a pair of silicon drive members whose one ends are connected to the hypotenuses of the trapezoid of the polymer joint part, a polymer connector part for connecting the other ends of the silicon drive members to the first or second body, or to the adjacent pair of moving units, a resistor part applying heat to the polymer joint part and the polymer connector part, and a power supply for supplying electric power to the resistor part, wherein the polymer joint part expands or contracts with the heat selectively applied from the resistor part to allow the drive members of the respective moving units to rotate, thereby causing the first and second bodies to move linearly.