Patents by Inventor Shinobu Yamazaki

Shinobu Yamazaki 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).

  • Semiconductor storage device having a capacitor and a MOS transistor
    Patent number: 6046469
    Abstract: In a semiconductor storage device, a capacitor section is connected with a drain region of a MOS transistor by means of a polysilicon plug. The capacitor section has a lower electrode, a ferroelectric thin film, and an upper electrode stacked in this order. A TiN barrier metal is placed between the lower electrode and the plug. The lower electrode has a lower film made of a platinum-rhodium alloy and an upper film made of a platinum-rhodium alloy oxide which is in contact with the ferroelectric thin film.
    Type: Grant
    Filed: September 28, 1998
    Date of Patent: April 4, 2000
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shinobu Yamazaki, Kazuya Ishihara, Masaya Nagata