Patents by Inventor Bumkyoo Choi

Bumkyoo Choi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electrostatically-actuated capacitive MEMS (micro electro mechanical system) switch
    Patent number: 6621390
    Abstract: An electrostatically actuated capacitive MEMS switch includes a plurality of cantilever springs which are actuated parallel to the plane of a substrate. The springs are connected to posts vertically formed on the substrate, and an insulating layer for preventing direct contact between springs and inducing switching depending on a variation in capacitance between the springs is formed on the surface of each of the springs. An opening is formed in the substrate, and the springs are located over the opening. Each of the springs has both lateral portions located on different planes and a slanted middle portion for connecting the two lateral portions to each other.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: September 16, 2003
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Insang Song, Jae-geun Oh, Bumkyoo Choi, Chongwoo Kim, Cimoo Song
  • Electrostatically-actuated capacitive MEMS (micro electro mechanical system) switch
    Publication number: 20020153236
    Abstract: An electrostatically actuated capacitive MEMS switch includes a plurality of cantilever springs which are actuated parallel to the plane of a substrate. The springs are connected to posts vertically formed on the substrate, and an insulating layer for preventing direct contact between springs and inducing switching depending on a variation in capacitance between the springs is formed on the surface of each of the springs. An opening is formed in the substrate, and the springs are located over the opening. Each of the springs has both lateral portions located on different planes and a slanted middle portion for connecting the two lateral portions to each other.
    Type: Application
    Filed: February 28, 2001
    Publication date: October 24, 2002
    Inventors: Insang Song, Jae-Geun Oh, Bumkyoo Choi, Chongwoo Kim, Cimoo Song