Patents by Inventor Kim Changhwa

Kim Changhwa 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).

  • Patent number: 9768062
    Abstract: A method for forming a low parasitic capacitance contact to a source-drain structure of a fin field effect transistor device. In some embodiments the method includes etching a long trench down to the source-drain structure, the trench being sufficiently long to extend across all the of source-drain regions of the device. A conductive layer is formed on the source-drain structure, and the trench is filled with a first fill material. A second, narrower trench is opened along a portion of the length of the first trench, and filled with a second fill material. The first fill material may be conductive, and may form the contact. If the first fill material is not conductive, a third trench may be opened, in the portion of the first trench not filled with the second fill material, and filled with a conductive material, to form the contact.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: September 19, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jorge A. Kittl, David Seo, Kota Oikawa, Kim Changhwa, Rwik Sengupta, Mark S. Rodder