Patents by Inventor Akitoyo Konno

Akitoyo Konno 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).

  • Publication number: 20040061671
    Abstract: A display apparatus is arranged in a manner that each pixel includes a light emitting element for emitting light in response to a current flowing therein, a first switching element for fetching luminance information into a pixel from a signal line, and a second switching element for controlling a current amount to be supplied to the light emitting element in accordance with the luminance information thus fetched; the luminance information is fetched by fetching the signal voltage of the signal line when a scanning line connected to the pixel is selected; and the luminance information thus fetched in each of the pixels is kept in a capacitor even after the scanning line connected to the pixel is place in a non-selection state.
    Type: Application
    Filed: August 14, 2003
    Publication date: April 1, 2004
    Applicant: Hitachi Displays, Ltd.
    Inventors: Masahiro Kawasaki, Yoshirou Mikami, Hajime Murakami, Masahiko Andou, Kenichi Onisawa, Akitoyo Konno
  • Patent number: 6704067
    Abstract: A liquid crystal display apparatus having a pair of substrates of which at least one is transparent; and a liquid crystal layer supported between the pair of substrates, in which one of the pair of substrates has a plurality of row lines and a plurality of row lines, and pixels are placed corresponding to intersections of the plurality of row lines and the plurality of row lines. A first pixel electrode and a second pixel electrode are provided in the pixel, and a first active element is placed in the pixel and an output terminal thereof is connected to one row line adjacent to the first pixel electrode and the pixel, and a second active element is placed in the pixel and its output is connected to the other row line adjacent to the second pixel electrode.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: March 9, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Makoto Tsumura, Akitoyo Konno, Tsunenori Yamamoto, Ikuo Hiyama, Yoshinori Aono
  • Patent number: 6704066
    Abstract: A liquid crystal display apparatus which is so configured that first and second pixel electrodes and active elements are positioned in a pixel, and an output terminal thereof is connected to a pixel electrode and a row line or a common line respectively, driving is performed by a difference voltage between the row lines or between the row line and the common line, and besides, a superimposing portion via a dielectric film of the first pixel electrode and the second pixel electrode is provided around a center in a row direction of pixels, and moreover, a holding capacitance is formed in the superimposing portion, and the first pixel electrode and the second pixel electrode are in a shape forming an axisymmetric relation in the row direction centering on the superimposing portion.
    Type: Grant
    Filed: March 20, 2002
    Date of Patent: March 9, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Makoto Tsumura, Akitoyo Konno, Tsunenori Yamamoto, Ikuo Hiyama, Yoshinori Aono
  • Publication number: 20040041760
    Abstract: A liquid crystal display device includes a periodically switching light source repeatedly turning ON and OFF at a predetermined timing and a display unit for displaying an image by controlling light transmission or reflection of the periodically switching light source according to the image data. In each display frame constituting one image, write into the liquid crystal display device is divided into a first write for writing into all the pixels using precharge data as representative of a plurality of pixels created according to a first algorithm and a second write for additionally writing overwriting data created on at least some pixels according to a second algorithm, thereby displaying an image. In the liquid crystal display device using the periodically switching light source, the periodically switching ghost is suppressed and the moving picture display performance is improved.
    Type: Application
    Filed: July 7, 2003
    Publication date: March 4, 2004
    Inventors: Makoto Tsumura, Akitoyo Konno, Tsunenori Yamamoto, Ikuo Hiyama
  • Publication number: 20040041761
    Abstract: An image display apparatus configured by a display panel having an image memory element in a pixel, which achieves low power consumption. A nonvolatile image memory element 1, which can change the resistance value by phase change, is connected to a pixel electrode 25 of a liquid crystal element 5. The output of a thin-film transistor 17 driven by scanning and signal electrode lines 7, 9 is connected to the pixel electrode 25. When the scanning electrode line 7 is selected to have a high level voltage, the thin-film transistor 17 is turned on and a current signal flowing through the signal electrode 9 is sent through the image memory element 1 to a reference electrode line 15. Depending on the current value or pulse width passing through the image memory element 1, the resistance of the image memory element 1 is changed and is stored as a resistance value.
    Type: Application
    Filed: August 6, 2003
    Publication date: March 4, 2004
    Inventors: Tatsuya Sugita, Shinichi Komura, Shoichi Hirota, Tsunenori Yamamoto, Tetsuya Ooshima, Susumu Edo, Akitoyo Konno
  • Publication number: 20030169379
    Abstract: A liquid crystal display apparatus which is so configured that first and second pixel electrodes and active elements are positioned in a pixel, and an output terminal thereof is connected to a pixel electrode and a row line or a common line respectively, driving is performed by a difference voltage between the row lines or between the row line and the common line, and besides, a superimposing portion via a dielectric film of the first pixel electrode and the second pixel electrode is provided around a center in a row direction of pixels, and moreover, a holding capacitance is formed in the superimposing portion, and the first pixel electrode and the second pixel electrode are in a shape forming an axisymmetric relation in the row direction centering on the superimposing portion.
    Type: Application
    Filed: March 12, 2003
    Publication date: September 11, 2003
    Inventors: Makoto Tsumura, Akitoyo Konno, Tsunenori Yamamoto, Ikuo Hiyama, Yoshinori Aono
  • Publication number: 20030117422
    Abstract: A display device including a plurality of blocks of pixels each of which includes a red subpixel, a green subpixel, and a blue subpixel, each of the blocks including pixels in a form of a matrix having N rows and M columns includes a first active element shared among three subpixels of each pixel and a second active element connected to a second active element formed in each subpixel connected to the first active element. Ma gradation voltage lines (Ma is an integer; M≧Ma≧2) respectively of red, green, and blue subpixels in a direction of the column are commonly connected. The display device directly displays a compressed image signal without developing the image signal into a bit map in which each subpixel has gradation information.
    Type: Application
    Filed: August 21, 2002
    Publication date: June 26, 2003
    Inventors: Ikuo Hiyama, Tsunenori Yamamoto, Akitoyo Konno, Makoto Tsumura
  • Publication number: 20030090448
    Abstract: A liquid crystal display apparatus which is so configured that first and second pixel electrodes and active elements are positioned in a pixel, and an output terminal thereof is connected to a pixel electrode and a row line or a common line respectively, driving is performed by a difference voltage between the row lines or between the row line and the common line, and besides, a superimposing portion via a dielectric film of the first pixel electrode and the second pixel electrode is provided around a center in a row direction of pixels, and moreover, a holding capacitance is formed in the superimposing portion, and the first pixel electrode and the second pixel electrode are in a shape forming an axisymmetric relation in the row direction centering on the superimposing portion.
    Type: Application
    Filed: March 20, 2002
    Publication date: May 15, 2003
    Inventors: Makoto Tsumura, Akitoyo Konno, Tsunenori Yamamoto, Ikuo Hiyama, Yoshinori Aono
  • Publication number: 20030080932
    Abstract: There is disclosed a liquid crystal display apparatus having high motion image display performance. After preset writing, polarities are reversed between double and quadruple speeds of a normal speed to carry out writing. Accordingly, en-block black wiring on a full surface of screen and in-frame AC driving are achieved. By combining this with intermittent lighting of an illuminator, high motion image display performance is achieved. Scanning is started from one line or a pair of adjacent lines, one or more lines being present in the screen, and the scanning is carried out in both upper and lower directions with the one line or the pair of adjacent lines set as a reference. Thus, discontinuity of luminance in the screen is prevented, and high display performance is achieved.
    Type: Application
    Filed: March 19, 2002
    Publication date: May 1, 2003
    Inventors: Akitoyo Konno, Makoto Tsumura, Tsunenori Yamamoto, Ikuo Hiyama, Yoshinori Aono
  • Publication number: 20020105506
    Abstract: To provide a display device capable of displaying a moving picture with high definition and at high speed. An image display system includes: an image display unit; and a control unit. The control unit has: a block discrimination circuit portion; an image processing portion; a storage portion; and a synchronizing signal generation portion. The block discrimination circuit portion discriminates a moving picture or a still picture to process the image information in accordance with the discriminated result, in which the number of gradations for the image information processed when the discriminated result is the moving picture is lower than when the discriminated result is the still picture. Thereby, the high definition image display and the high speed moving picture display can be effected by reducing the information with lower degree of recognition.
    Type: Application
    Filed: September 24, 2001
    Publication date: August 8, 2002
    Inventors: Ikuo Hiyama, Tsunenori Yamamoto, Akitoyo Konno, Makoto Tsumura, Yoshiyuki Kaneko, Yoshiro Mikami, Tatsuki Inuzuka, Yasutaka Toyoda