Patents by Inventor Johta Fukuhara

Johta Fukuhara 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: 5990007
    Abstract: This invention provides a method of manufacturing a semiconductor device, including the steps of forming an insulating film and a first metal film on one major surface of a semiconductor substrate, each of the insulating film and the first metal film having a partially exposed surface, and selectively forming a second metal film on the exposed surface of the first metal film, wherein formation of the second metal film is performed in an atmosphere containing a gasified silicon compound obtained upon gasifying a liquid silicon compound containing at least one element selected from the group consisting of carbon, hydrogen, oxygen, chlorine, and fluorine, or its reaction product, whereby the exposed surface of the insulating film is chemically modified with the silicon compound or its reaction product.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: November 23, 1999
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Akihiro Kajita, Katsuhiko Oya, Johta Fukuhara, Kenichi Otsuka, Hitoshi Itoh
  • Patent number: 5529634
    Abstract: An evaporation chamber for forming fine metal particles is separated from a film formation chamber in which the substrate having a metal film such as a metal column thereon is placed during metal film deposition. The pressure of the film formation chamber is set to be lower than that of the evaporation chamber, and the fine metal particles are sprayed on the substrate by the pressure difference to form the metal column. Therefore, a wiring layer, a connection electrode for connecting the wiring layer to another wiring layer, and the like can easily be formed by a small number of steps.
    Type: Grant
    Filed: April 19, 1995
    Date of Patent: June 25, 1996
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masahiro Miyata, Hidemitsu Egawa, Johta Fukuhara, Shinzi Takeda, Hirokazu Ezawa