Patent ID: 7679186
Filing Date: 2010-03-16
Classification: H01H,H01L

Abstract:
1. A piezoelectric micro electro-mechanical system (MEMS) switch, comprising: a semiconductor substrate including a groove; a support formed over the semiconductor substrate and the groove; an actuator formed on the support and including a piezoelectric layer; a switching member formed on the support on one side of the actuator, wherein upward movement of the switching member changes by a deformation of the piezoelectric layer of the actuator; a cap wafer having first and second surfaces and attached to the semiconductor substrate at a predetermined interval; radio frequency (RF) transfer lines formed on the first surface of the cap water opposite to the semiconductor substrate so as to be over the switching member and separated by a predetermined interval from each other such that the upward movement of the switching member connects the RF transfer lines on the first surface, wherein the actuator is formed to have at least two cantilevers each having one end such that the ends are connected to each other.