Patent 7151425 was granted and assigned to LG on December, 2006 by the United States Patent and Trademark Office.
Disclosed are an RF MEMS switch and a fabrication method thereof. The RF MEMS switch is actuated with a low voltage and a low consumption power by using a piezoelectric capacitor actuated by being converted to mechanical energy from electric energy when an electric field is applied to the piezoelectric capacitor. A cap substrate is formed by using an etching method, a chemical mechanical polishing method, an electroplating method, etc., and the RF MEMS switch has a high reliability and a high yield.