Patents by Inventor Ikumi Takiguchi

Ikumi Takiguchi 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).

  • Color filter for liquid crystal display and semitransmission liquid crystal display
    Patent number: 7528908
    Abstract: The present invention provides a low-cost transflective liquid crystal display exhibiting high color reproducibility in a transmissive display and excellent characteristics (color reproducibility and brightness) in a reflective display. Also, the present invention provides a color filter for a bright transflective liquid crystal display. The transflective liquid crystal display includes a pair of substrates disposed opposite to each other with a liquid crystal layer held therebetween, a reflection means using ambient light as a light source, and a backlight source. The transflective liquid crystal display further includes a color filter having a transmissive region and a reflective region which are provided in each picture element of the color filter and which have colored layers comprising a single material, and a three-peak type LED backlight source.
    Type: Grant
    Filed: November 27, 2002
    Date of Patent: May 5, 2009
    Assignee: Toray Industries, Inc.
    Inventors: Tetsuo Yamashita, Ikumi Takiguchi, Hideyuki Kojima, Hiroyuki Sasaki
  • Color filter for liquid crystal display and semitransmission liquid crystal display
    Publication number: 20050110923
    Abstract: The present invention provides a low-cost transflective liquid crystal display exhibiting high color reproducibility in a transmissive display and excellent characteristics (color reproducibility and brightness) in a reflective display. Also, the present invention provides a color filter for a bright transflective liquid crystal display. The transflective liquid crystal display includes a pair of substrates disposed opposite to each other with a liquid crystal layer held therebetween, a reflection means using ambient light as a light source, and a backlight source. The transflective liquid crystal display further includes a color filter having a transmissive region and a reflective region which are provided in each picture element of the color filter and which have colored layers comprising a single material, and a three-peak type LED backlight source.
    Type: Application
    Filed: November 27, 2002
    Publication date: May 26, 2005
    Inventors: Tetsuo Yamashita, Ikumi Takiguchi, Hideyuki Kojima, Hiroyuki Sasaki