Patents by Inventor Kiyoshige Kinugawa

Kiyoshige Kinugawa 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: 9324260
    Abstract: The invention provides an image display device that has an especially satisfactory display quality for animated images, and sufficiently suppresses the irregularities of display quality among pixels. The image display device includes a light emitting drive means that drives a light emitting means, based on an analog display signal inputted to the pixels, and a light emitting control switch for controlling a light-on or light-off of the light emitting means on one end of the light emitting drive means in each pixel.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: April 26, 2016
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Hajime Akimoto, Yoshirou Mikami, Kiyoshige Kinugawa, Shigeyuki Nishitani, Takeo Shiba
  • Patent number: 9324259
    Abstract: The invention provides an image display device that has an especially satisfactory display quality for animated images, and sufficiently suppresses the irregularities of display quality among pixels. The image display device includes a light emitting drive means that drives a light emitting means, based on an analog display signal inputted to the pixels, and a light emitting control switch for controlling a light-on or light-off of the light emitting means on one end of the light emitting drive means in each pixel.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: April 26, 2016
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Hajime Akimoto, Yoshirou Mikami, Kiyoshige Kinugawa, Shigeyuki Nishitani, Takeo Shiba
  • Publication number: 20150199931
    Abstract: The invention provides an image display device that has an especially satisfactory display quality for animated images, and sufficiently suppresses the irregularities of display quality among pixels. The image display device includes a light emitting drive means that drives a light emitting means, based on an analog display signal inputted to the pixels, and a light emitting control switch for controlling a light-on or light-off of the light emitting means on one end of the light emitting drive means in each pixel.
    Type: Application
    Filed: March 24, 2015
    Publication date: July 16, 2015
    Inventors: Hajime AKIMOTO, Yoshihiro MIKAMI, Kiyoshige KINUGAWA, Shigeyuki NISHITANI, Takeo SHIBA
  • Publication number: 20150199933
    Abstract: The invention provides an image display device that has an especially satisfactory display quality for animated images, and sufficiently suppresses the irregularities of display quality among pixels. The image display device includes a light emitting drive means that drives a light emitting means, based on an analog display signal inputted to the pixels, and a light emitting control switch for controlling a light-on or light-off of the light emitting means on one end of the light emitting drive means in each pixel.
    Type: Application
    Filed: March 24, 2015
    Publication date: July 16, 2015
    Inventors: Hajime AKIMOTO, Yoshihiro MIKAMI, Kiyoshige KINUGAWA, Shigeyuki NISHITANI, Takeo SHIBA
  • Patent number: 9035978
    Abstract: The invention provides an image display device that has an especially satisfactory display quality for animated images, and sufficiently suppresses the irregularities of display quality among pixels. The image display device includes a light emitting drive means that drives a light emitting means, based on an analog display signal inputted to the pixels, and a light emitting control switch for controlling a light-on or light-off of the light emitting means on one end of the light emitting drive means in each pixel.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: May 19, 2015
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Hajime Akimoto, Yoshihiro Mikami, Kiyoshige Kinugawa, Shigeyuki Nishitani, Takeo Shiba
  • Publication number: 20140139564
    Abstract: The invention provides an image display device that has an especially satisfactory display quality for animated images, and sufficiently suppresses the irregularities of display quality among pixels. The image display device includes a light emitting drive means that drives a light emitting means, based on an analog display signal inputted to the pixels, and a light emitting control switch for controlling a light-on or light-off of the light emitting means on one end of the light emitting drive means in each pixel.
    Type: Application
    Filed: January 28, 2014
    Publication date: May 22, 2014
    Applicants: Panasonic Liquid Crystal Display Co., Ltd., Japan Display Inc.
    Inventors: Hajime AKIMOTO, Yoshirou MIKAMI, Kiyoshige KINUGAWA, Shigeyuki NISHITANI, Takeo SHIBA
  • Patent number: 8730281
    Abstract: The invention provides an image display device that has an especially satisfactory display quality for animated images, and sufficiently suppresses the irregularities of display quality among pixels. The image display device includes a light emitting drive means that drives a light emitting means, based on an analog display signal inputted to the pixels, and a light emitting control switch for controlling a light-on or light-off of the light emitting means on one end of the light emitting drive means in each pixel.
    Type: Grant
    Filed: July 15, 2013
    Date of Patent: May 20, 2014
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Hajime Akimoto, Yoshirou Mikami, Kiyoshige Kinugawa, Shigeyuki Nishitani, Takeo Shiba
  • Publication number: 20130293601
    Abstract: The invention provides an image display device that has an especially satisfactory display quality for animated images, and sufficiently suppresses the irregularities of display quality among pixels. The image display device includes a light emitting drive means that drives a light emitting means, based on an analog display signal inputted to the pixels, and a light emitting control switch for controlling a light-on or light-off of the light emitting means on one end of the light emitting drive means in each pixel.
    Type: Application
    Filed: July 15, 2013
    Publication date: November 7, 2013
    Applicants: Panasonic Liquid Crystal Display Co., Ltd., Hitachi Displays, Ltd.
    Inventors: Hajime AKIMOTO, Yoshirou MIKAMI, Kiyoshige KINUGAWA, Shigeyuki NISHITANI, Takeo SHIBA
  • Patent number: 8508562
    Abstract: The invention provides an image display device that has an especially satisfactory display quality for animated images, and sufficiently suppresses the irregularities of display quality among pixels. The image display device includes a light emitting drive means that drives a light emitting means, based on an analog display signal inputted to the pixels, and a light emitting control switch for controlling a light-on or light-off of the light emitting means on one end of the light emitting drive means in each pixel.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: August 13, 2013
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Hajime Akimoto, Yoshirou Mikami, Kiyoshige Kinugawa, Shigeyuki Nishitani, Takeo Shiba
  • Publication number: 20120086739
    Abstract: The invention provides an image display device that has an especially satisfactory display quality for animated images, and sufficiently suppresses the irregularities of display quality among pixels. The image display device includes a light emitting drive means that drives a light emitting means, based on an analog display signal inputted to the pixels, and a light emitting control switch for controlling a light-on or light-off of the light emitting means on one end of the light emitting drive means in each pixel.
    Type: Application
    Filed: December 19, 2011
    Publication date: April 12, 2012
    Applicants: Panasonic Liquid Crystal Display Co., Ltd., Hitachi Displays, Ltd.
    Inventors: Hajime Akimoto, Yoshirou Mikami, Kiyoshige Kinugawa, Shigeyuki Nishitani, Takeo Shiba
  • Patent number: 8102387
    Abstract: The invention provides an image display device that has an especially satisfactory display quality for animated images, and sufficiently suppresses the irregularities of display quality among pixels. The image display device includes a light emitting drive means that drives a light emitting means, based on an analog display signal inputted to the pixels, and a light emitting control switch for controlling a light-on or light-off of the light emitting means on one end of the light emitting drive means in each pixel.
    Type: Grant
    Filed: December 10, 2008
    Date of Patent: January 24, 2012
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Hajime Akimoto, Yoshirou Mikami, Kiyoshige Kinugawa, Shigeyuki Nishitani, Takeo Shiba
  • Patent number: 8089428
    Abstract: In an image display apparatus using an FED or an organic EL element, image display that is high in illumination uniformity and high in image quality can be performed. A display element with a matrix structure which conducts linear sequential driving which determines the luminance by a current is used, a threshold voltage of a cathode line immediately before one select period has been terminated where a control electrode line is sequentially driven is measured by a threshold voltage measuring section, the measured threshold voltage is recorded for each of the pixels, and a driving signal at the time of selecting the pixel is corrected by using the value of the recorded threshold voltage, to thereby control electric charge that is emitted from a cathode.
    Type: Grant
    Filed: October 24, 2006
    Date of Patent: January 3, 2012
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Tomio Yaguchi, Kiyoshige Kinugawa, Shigeyuki Nishitani, Takahiko Muneyoshi, Susumu Sasaki, Shoichi Uchino, Akiko Iwata, Makoto Okai, Tetsuya Yamazaki, Nobuaki Hayashi
  • Patent number: 7714507
    Abstract: The recent invention provide an organic electroluminescence display device with color purity adjustment, particularly white purity increased, without increasing formation processes. For each of unit pixels formed on an insulating film INS formed on a principal surface of a glass substrate, a bank BNK is provided on a bottom electrode BEL being a pixel electrode. The bank BNK has the shape of a bank that surrounds a pixel concerned, for each of pixels, and an organic electroluminescence light emitting layer is charged within a region surrounded by the banks BNKs. Between the banks BNKs, a green light emitting layer (G light emitting layer), a blue light emitting layer (B light emitting layer), and a red light emitting layer (R light emitting layer) are provided.
    Type: Grant
    Filed: February 27, 2007
    Date of Patent: May 11, 2010
    Assignee: Hitachi Displays, Ltd.
    Inventors: Kazuhiko Kai, Kiyoshige Kinugawa, Masato Ito
  • Publication number: 20090102761
    Abstract: The invention provides an image display device that has an especially satisfactory display quality for animated images, and sufficiently suppresses the irregularities of display quality among pixels. The image display device includes a light emitting drive means that drives a light emitting means, based on an analog display signal inputted to the pixels, and a light emitting control switch for controlling a light-on or light-off of the light emitting means on one end of the light emitting drive means in each pixel.
    Type: Application
    Filed: December 10, 2008
    Publication date: April 23, 2009
    Inventors: Hajime Akimoto, Yoshirou Mikami, Kiyoshige Kinugawa, Shigeyuki Nishitani, Takeo Shiba
  • Patent number: 7518577
    Abstract: An image display device which has a stable luminous brightness among pixels. An on/off control switch 15 for stopping the driving operation of a light emitting element 13 is provided in a pixel 1. A change in the luminous brightness caused by a variation in the characteristic of the light emitting element 13 is suppressed by feeding a result measured by a current measuring circuit provided in one end of a power line 4 back to a drive signal for the light emitting element 13.
    Type: Grant
    Filed: July 20, 2004
    Date of Patent: April 14, 2009
    Assignee: Hitachi Displays, Ltd.
    Inventors: Hajime Akimoto, Kiyoshige Kinugawa, Nobuaki Hayashi
  • Patent number: 7468715
    Abstract: The invention provides an image display device that has an especially satisfactory display quality for animated images, and sufficiently suppresses the irregularities of display quality among pixels. The image display device includes a light emitting drive means that drives a light emitting means, based on an analog display signal inputted to the pixels, and a light emitting control switch for controlling a light-on or light-off of the light emitting means on one end of the light emitting drive means in each pixel.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: December 23, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Hajime Akimoto, Yoshirou Mikami, Kiyoshige Kinugawa, Shigeyuki Nishitani, Takeo Shiba
  • Patent number: 7436376
    Abstract: The invention provides an image display device that has an especially satisfactory display quality for animated images, and sufficiently suppresses the irregularities of display quality among pixels. The image display device includes a light emitting drive means that drives a light emitting means, based on an analog display signal inputted to the pixels, and a light emitting control switch for controlling a light-on or light-off of the light emitting means on one end of the light emitting drive means in each pixel.
    Type: Grant
    Filed: January 26, 2005
    Date of Patent: October 14, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Hajime Akimoto, Yoshirou Mikami, Kiyoshige Kinugawa, Shigeyuki Nishitani, Takeo Shiba
  • Patent number: 7286105
    Abstract: The present invention provides an image display capable of performing high-precision multi-gradation display while avoiding problems of a subtle noise and increase in a drive frequency. Display signal data of one frame is constructed by a plurality of sub frames of, for example, four sub frames 1/4 to 4/4. The 1/4 frame is set as an address period of an analog signal, the 2/4 frame is set as an analog gradation display period, the 3/4 frame is set as an address period of a digital signal, and the 4/4 frame is set as a digital gradation light emission period.
    Type: Grant
    Filed: January 10, 2003
    Date of Patent: October 23, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Hajime Akimoto, Kiyoshige Kinugawa
  • Publication number: 20070200495
    Abstract: The recent invention provide an organic electroluminescence display device with color purity adjustment, particularly white purity increased, without increasing formation processes. For each of unit pixels formed on an insulating film INS formed on a principal surface of a glass substrate, a bank BNK is provided on a bottom electrode BEL being a pixel electrode. The bank BNK has the shape of a bank that surrounds a pixel concerned, for each of pixels, and an organic electroluminescence light emitting layer is charged within a region surrounded by the banks BNKs. Between the banks BNKs, a green light emitting layer (G light emitting layer), a blue light emitting layer (B light emitting layer), and a red light emitting layer (R light emitting layer) are provided.
    Type: Application
    Filed: February 27, 2007
    Publication date: August 30, 2007
    Inventors: Kazuhiko Kai, Kiyoshige Kinugawa, Masato Ito
  • Patent number: 7262755
    Abstract: A multi-tone display matrix display device including a matrix display panel having a matrix having plural X and Y direction signal lines lying at right angles to each other, intersecting points on the matrix being pixels of an image, an X direction driving section for sequentially scanning X direction signal lines to provide image signals, a Y direction driving section for driving the Y direction signal lines in synchronism with the scanning of the X direction signal lines to sequentially provide select signals to the Y direction signal lines, an A-D converter section for converting an analog signal into a digital signal, a voltage generating section for generating signals at plural voltage levels, and a selector section for selecting an output signal from the voltage generating section based on the output from A-D converter section and providing to output to the X direction driving section as an image signal.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: August 28, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Hiroyuki Mano, Kiyokazu Nishioka, Toshio Futami, Kiyoshige Kinugawa