Patents by Inventor Nagamasa Ono

Nagamasa Ono 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: 5790089
    Abstract: In a method for driving an active matrix type liquid crystal display device having a liquid crystal panel having the structure that a set of liquid crystal layers and two-terminal active layers are connected in series between a set of column electrodes and a set of row electrodes, a display operation being carried out by applying a difference signal between each column electrode and each row electrode, the difference signal is set so as to have a voltage having an inverse characteristic to the I-V characteristic of the two-terminal active element and is applied between the column and row electrodes to thereby depress occurrence of flicker.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 4, 1998
    Assignee: Seiko Epson Corporation
    Inventors: Nagamasa Ono, Yoichi Wakai, Masanori Konishi
  • Patent number: 5781256
    Abstract: The method of fabricating a nonlinear resistance element includes the steps of: forming on a substrate a first conductive film having tantalum as a main component to which is added tungsten; forming an insulating film on the first conductive film by anodization of the first conductive film, using an electrolyte comprising tungstic acid ions and under conditions by which the pH of the electrolyte is conditioned in accordance with the tungsten concentration within the first conductive film; and forming a second conductive film on the insulating film. The "polarity difference" of the nonlinear resistance element varies with the tungsten concentration in the first conductive film, and it also varies with the pH of the electrolyte, even when the tungsten concentration is the same.
    Type: Grant
    Filed: September 23, 1996
    Date of Patent: July 14, 1998
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Inoue, Nagamasa Ono
  • Patent number: 5526013
    Abstract: In a method for driving an active matrix type liquid crystal display device having a liquid crystal panel having the structure that a set of liquid crystal layers and two-terminal active layers are connected in series between a set of column electrodes and a set of row electrodes, a display operation being carried out by applying a difference signal between each column electrode and each row electrode, the difference signal is set so as to have a voltage having an inverse characteristic to the I-V characteristic of the two-terminal active element and is applied between the column and row electrodes to thereby depress occurrence of flicker.
    Type: Grant
    Filed: August 23, 1994
    Date of Patent: June 11, 1996
    Assignee: Seiko Epson Corp.
    Inventors: Nagamasa Ono, Yoichi Wakai, Masanori Konishi