Patents by Inventor Masanori Imakawa

Masanori Imakawa 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: 8228474
    Abstract: A liquid crystal display device comprises an array substrate having first and second pixel electrodes arranged adjacent each other and a counter substrate having a counter electrode opposing to the first and second pixel electrodes. First and second slits are formed on the counter electrode opposing to the first and second pixel electrode so as to cross the first and second pixel electrode, respectively. The counter electrode is separated into a first counter electrode portion and a second counter electrode portion by the first and second slits. A connecting counter electrode portion is arranged between the first and second slits to connect the first and second counter electrode portions. A columnar spacer is arranged between the first and second slits opposing to the connecting counter electrode portion to form a cell gap between the array substrate and the counter substrate.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: July 24, 2012
    Assignee: Toshiba Mobile Display Co., Ltd.
    Inventors: Masanori Imakawa, Arihiro Takeda, Nobuko Fukuoka
  • Patent number: 8154703
    Abstract: A liquid crystal display panel includes an array substrate including a scanning line, a signal line crossing the scanning line, a switching element electrically connected to the scanning line and the signal line, and a pixel electrode formed on the scanning line, the signal line, and the switching element and electrically connected to the switching element, an opposite substrate including a common electrode with a through-hole and arranged opposite to the array substrate with a gap, a columnar spacer formed on either one of the array substrate and the opposite substrate and positioned away from the pixel electrode, the columnar spacer overlapping the through-hole and holding the gap between the array substrate and the opposite substrate, and a liquid crystal layer sandwiched between the array substrate and the opposite substrate.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: April 10, 2012
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Masumi Manabe, Jin Hirosawa, Masanori Imakawa
  • Publication number: 20100195037
    Abstract: A liquid crystal display device comprises an array substrate having first and second pixel electrodes arranged adjacent each other and a counter substrate having a counter electrode opposing to the first and second pixel electrodes. First and second slits are formed on the counter electrode opposing to the first and second pixel electrode so as to cross the first and second pixel electrode, respectively. The counter electrode is separated into a first counter electrode portion and a second counter electrode portion by the first and second slits. A connecting counter electrode portion is arranged between the first and second slits to connect the first and second counter electrode portions. A columnar spacer is arranged between the first and second slits opposing to the connecting counter electrode portion to form a cell gap between the array substrate and the counter substrate.
    Type: Application
    Filed: December 30, 2009
    Publication date: August 5, 2010
    Applicant: Toshiba Mobile Display Co., Ltd.
    Inventors: Masanori IMAKAWA, Arihiro Takeda, Nobuko Fukuoka
  • Patent number: 7688416
    Abstract: Structural objects are disposed in a peripheral region in positions opposed to spacers. In this way, a substrate surface of a counter substrate in the peripheral region is gently inclined in a direction away from a liquid crystal layer. In this way, it is possible to prevent unevenness in display attributable to a difference in a cell gap between a display region and the peripheral region.
    Type: Grant
    Filed: April 14, 2008
    Date of Patent: March 30, 2010
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Nobuko Fukuoka, Masanori Imakawa, Arihiro Takeda, Hirokazu Morimoto
  • Publication number: 20090103021
    Abstract: A liquid crystal display panel includes an array substrate including a scanning line, a signal line crossing the scanning line, a switching element electrically connected to the scanning line and the signal line, and a pixel electrode formed on the scanning line, the signal line, and the switching element and electrically connected to the switching element, an opposite substrate including a common electrode with a through-hole and arranged opposite to the array substrate with a gap, a columnar spacer formed on either one of the array substrate and the opposite substrate and positioned away from the pixel electrode, the columnar spacer overlapping the through-hole and holding the gap between the array substrate and the opposite substrate, and a liquid crystal layer sandwiched between the array substrate and the opposite substrate.
    Type: Application
    Filed: October 10, 2008
    Publication date: April 23, 2009
    Inventors: Masumi MANABE, Jin Hirosawa, Masanori Imakawa
  • Publication number: 20080291382
    Abstract: Structural objects are disposed in a peripheral region in positions opposed to spacers. In this way, a substrate surface of a counter substrate in the peripheral region is gently inclined in a direction away from a liquid crystal layer. In this way, it is possible to prevent unevenness in display attributable to a difference in a cell gap between a display region and the peripheral region.
    Type: Application
    Filed: April 14, 2008
    Publication date: November 27, 2008
    Applicant: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Nobuko FUKUOKA, Masanori IMAKAWA, Arihiro TAKEDA, Hirokazu MORIMOTO