Patents by Inventor Shinichi Komura

Shinichi Komura 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: 20060221280
    Abstract: A liquid crystal display of a vertical alignment (VA) mode using a circular polarization plate is provided which can reduce light leak as observed along an oblique direction and achieve a high contrast ratio. The VA mode uses a liquid crystal layer of vertical alignment in an initial alignment state. A film having generally isotropic optical characteristics in an omnidirection is used as a protective film, on a liquid crystal cell side, of first and second polarization plates disposed outside the liquid crystal cell, and first and fourth retardation films have an Nz coefficient smaller than 1.
    Type: Application
    Filed: February 17, 2006
    Publication date: October 5, 2006
    Inventors: Shinichiro Oka, Masaya Adachi, Shinichi Komura, Ikuo Hiyama
  • Patent number: 7064736
    Abstract: A liquid crystal display device includes a liquid crystal panel having a plurality of pixels disposed in a matrix format, a Y-selecting signal generating unit for selecting one or more pixel rows, an X-selecting signal generating unit for selecting one or more pixel columns, and a tone signal generating unit for generating a tone signal for applying the corresponding tone voltage to tone information of said display data onto each of the pixels.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: June 20, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Yasuyuki Kudo, Tsutomu Furuhashi, Yoshiro Mikami, Shinichi Komura, Toshio Miyazawa
  • Publication number: 20060125765
    Abstract: A display method can achieve both a substantially high definition image display and high speed dynamic image display. The image displaying method of an image displaying apparatus having a display portion consisting of a plurality of pixels takes each of a predetermined number of pixels as one block unit and forms one screen image for display by combining a region for displaying the same information on a plurality of pixels in one block unit during one scanning period and a region for permitting display of respectively different information on the plurality of pixels in the one block unit.
    Type: Application
    Filed: February 13, 2006
    Publication date: June 15, 2006
    Inventors: Ikuo Hiyama, Shinichi Komura, Tsunenori Yamamoto, Tetsuya Aoyama, Hideo Sato, Makoto Tsumura, Katsumi Kondo, Yuka Utsumi
  • Patent number: 7061456
    Abstract: A display method can achieve both a substantially high definition image display and high speed dynamic image display. The image displaying method of an image displaying apparatus having a display portion consisting of a plurality of pixels takes each of a predetermined number of pixels as one block unit and forms one screen image for display by combining a region for displaying the same information on a plurality of pixels in one block unit during one scanning period and a region for permitting display of respectively different information on the plurality of pixels in the one block unit.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: June 13, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Ikuo Hiyama, Shinichi Komura, Tsunenori Yamamoto, Tetsuya Aoyama, Hideo Sato, Makato Tsumura, Katsumi Kondo, Yuka Utsumi
  • Publication number: 20060103782
    Abstract: An optical element is arranged in such a manner that a screen thereof can be hardly observed from a predetermined direction, and a deterioration of an image quality caused by moire does not occur. The optical element is constituted by a first polarizing layer, a second polarizing layer, and a liquid crystal layer arranged between these two polarizing layers. In the optical element, absorption axes of the first polarizing layer and the second polarizing layer are located parallel to each other; the liquid crystal layer is made of hybrid-aligned discotic liquid crystal; and an alignment axis of the liquid crystal layer is located parallel to, or perpendicular to both absorption axes of the first polarizing layer and of the second polarizing layer.
    Type: Application
    Filed: November 14, 2005
    Publication date: May 18, 2006
    Inventors: Masaya Adachi, Osamu Itou, Shinichi Komura
  • Patent number: 7019799
    Abstract: A liquid crystal display for displaying an image to be visible for a viewer, has a liquid crystal, a pair of electrodes for controlling an orientation of at least a part of the liquid crystal in accordance with an electric field between the electrodes, a light source for generating a light to be transmitted through the liquid crystal to the viewer, a pair of first and second polarizer plates, and a band-pass filter. The first polarizer plate is arranged between the liquid crystal and the light source, and the second polarizer plate is arranged between the liquid crystal and the viewer. The band-pass filter absorbs a component of the light, in which a wave-length of the component of the light is no more than 440 nm, and the band-pass filter is arranged between the light source and the viewer.
    Type: Grant
    Filed: January 25, 2005
    Date of Patent: March 28, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Yuka Utsumi, Ikuo Hiyama, Shinichi Komura, Katsumi Kondo
  • Patent number: 7006113
    Abstract: A display apparatus includes pixels arranged in matrix; a pixel electrode disposed inside each of the pixels; a display device disposed inside each of the pixels, for executing display in accordance with a voltage of the pixel electrode; a scanning line driving circuit; an identification signal line driving circuit; a storage unit for storing the identification signal supplied from the identification signal line in the pixel; a gray scale voltage line driving circuit; a selection unit for selecting the gray scale voltage supplied to the gray scale voltage lines based on the identification signal stored in the storage unit; a switching device for applying the selected gray scale voltage to the pixel electrode; and a gray scale write line driving circuit for supplying a gray scale write signal to a gray scale write line for controlling the switching device.
    Type: Grant
    Filed: August 22, 2001
    Date of Patent: February 28, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Tsunenori Yamamoto, Tatsuki Inuzuka, Ikuo Hiyama, Shinichi Komura
  • Publication number: 20060007092
    Abstract: An active matrix type liquid crystal display device driving method for switching a partial display mode and a normal display mode. The respective data lines of the partial display area are scanned in a certain period defined as a frame period, “k” pieces (symbol “k” is integer larger than, or equal to 1) of the partial display areas are present within 1 screen, a common electrode potential is varied 2 k times within 1 frame period; a common electrode potential in a partially scanning period for scanning the partial display area is made as a constant potential against a reference of a driving circuit for driving the data lines; and within at least two continued frames, a common electrode potential of a blank period other than the partially scanning period is made as a constant potential which is different from the constant potential in the partially scanning period.
    Type: Application
    Filed: June 9, 2005
    Publication date: January 12, 2006
    Inventors: Yoshifumi Sekiguchi, Shoichi Hirota, Shinichi Komura
  • Publication number: 20050264728
    Abstract: A low cost transflective type liquid crystal display is provided which can display a bright image with high contrast under both indoor and outdoor illumination environments. The liquid crystal display performing transmission type display and reflection type display, includes: a plurality of pixels surrounded on a substrate 10 by a plurality of gate electrodes 11 and a plurality of source electrodes 15 arranged perpendicularly to the gate electrodes; a switching element 19 arranged in each pixel and disposed neat at the intersection between each gate electrode and each source electrode; and a pixel electrode 16 connected to the switching element, wherein the pixel electrode is constituted of a transparent conductive layer and a conductive member 17 having a light reflection function and electrically connected to the transparent conductive layer.
    Type: Application
    Filed: September 20, 2002
    Publication date: December 1, 2005
    Inventors: Katsuyuki Funahata, Makoto Abe, Osamu Itoh, Shinichi Komura
  • Patent number: 6967637
    Abstract: A liquid crystal display apparatus including: a first substrate; a second substrate arranged opposite the first substrate; and a liquid crystal layer held between the first substrate and the second substrate; further provided with a plurality of scanning lines arranged over the first substrate; signal lines arranged over the first substrate to cross the scanning lines; pixels each composed matching an area surrounded by the scanning lines and the signal lines; pixel electrodes arranged over the first substrate and matching the signal lines; and common electrodes arranged over the first substrate and matching the pixel electrodes, wherein at least either of the first substrate and the second substrate is provided with unevenness to vary the thickness of the liquid crystal layer in the light-transmissive regions of the same ones of the pixels.
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: November 22, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Tetsuya Aoyama, Kenji Okishiro, Katsumi Kondou, Tsunenori Yamamoto, Shinichi Komura
  • Patent number: 6956691
    Abstract: The present invention provides an electrophoretic display in which an insulating liquid is uniformly provided to the divided microspaces each corresponding to one pixel and display characteristics uniform over the display surface are actualized. The present invention includes a transparent first substrate 1 and a transparent second substrate 2 arranged with a predetermined gap therebetween, charged particles 6 dispersed in an insulating liquid 5 provided to the gap, and a first electrode 3 and a second electrode 4 arranged on either of the first substrate 1 and the second substrate 2, wherein liquid-repellency parts 8 and repellency-lowered parts 9 are arranged on the surface of the first substrate 1 and the surface of the second substrate 2, and the insulating liquid 5 is provided to the repellency-lowered parts on the surface of the first substrate 1 and the surface of the second substrate 2.
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: October 18, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Hiroki Kaneko, Tetsuya Ooshima, Tatsuya Sugita, Shinichi Komura, Shoichi Hirota, Hiroshi Sasaki
  • Publication number: 20050174315
    Abstract: A scanning-line selecting circuit is configured by connecting basic circuits with each other over plural stages. Each of the basic circuits includes a basic scanning-line driving circuit and a voltage raising circuit. A basic scanning signal is inputted into the basic scanning-line driving circuit, which, then, outputs a scanning signal. A charge pulse, a selecting signal, and a discharge pulse are inputted into the voltage raising circuit, which, then, drives the basic scanning-line driving circuit. Accordingly, in the basic circuits, there exists none of the problems of threshold-value shift and voltage lowering. This characteristic makes it possible to implement high efficiency and stable operation.
    Type: Application
    Filed: December 3, 2004
    Publication date: August 11, 2005
    Inventors: Susumu Edo, Shinichi Komura, Shoichi Hirota, Nobuyuki Ishige
  • Publication number: 20050168457
    Abstract: An image display capable of multilevel display and having a minimal pixel-to-pixel display characteristic variation. The image display having a display area of a plurality of pixels and a signal line for feeding a display signal voltage to the pixels, comprises, in at least one of the plurality of pixels: a memory for storing the display signal voltage entered from the signal line to the pixel; a pixel turn-on period decision section for determining an ON period and an OFF period for an image output in the pixel according to the display signal voltage; and a pixel driver for repeating an ON operation of the image output a plurality of times in one frame.
    Type: Application
    Filed: April 1, 2005
    Publication date: August 4, 2005
    Inventors: Hajime Akimoto, Shigeyuki Nishitani, Shinichi Komura, Toshihiro Sato, Hiroshi Kageyama, Yoshiteru Shimizu
  • Publication number: 20050156813
    Abstract: A thin display unit which display a plurality of objects to be viewed located at different depthwise positions viewed from the viewer so as to exhibit an image with depthwise feeling, comprising: a single display portion having a screen which is divided into a far-distant display zone and a near-distant display zone, a polarized beam splitting element located in front of the near-distant display zone, a polarized beam changing element located in front of the far-distant display zone, and a total reflection mirror for reflecting an image beam emitted from the far-distant display zone, onto the polarized beam splitting element, wherein an image beam emitted from the near-distant display zone is transmitted through the polarized beam splitting element and then viewed by the viewer, and an image beam emitted from the far-distant display zone is transmitted through the polarized beam changing element, then is reflected at the total reflection mirror, and thereafter is reflected by the polarized beam splitting elem
    Type: Application
    Filed: December 20, 2004
    Publication date: July 21, 2005
    Inventors: Masaya Adachi, Osamu Itou, Shinichi Komura
  • Publication number: 20050140620
    Abstract: A liquid crystal display apparatus includes a substrate and a second substrate with a liquid crystal layer sandwiched therebetween. A plurality of pixels are sandwiched between the two substrates and form a display section, each of the pixels is provided with first and second pixel electrodes both corresponding to the pixel, and a common electrode corresponding to the first and second pixel electrodes.
    Type: Application
    Filed: February 11, 2005
    Publication date: June 30, 2005
    Inventors: Tetsuya Aoyama, Shinichi Komura, Yuka Utsumi
  • Publication number: 20050128378
    Abstract: A liquid crystal display for displaying an image to be visible for a viewer, has a liquid crystal, a pair of electrodes for controlling an orientation of at least a part of the liquid crystal in accordance with an electric field between the electrodes, a light source for generating a light to be transmitted through the liquid crystal to the viewer, a pair of first and second polarizer plates, and a band-pass filter. The first polarizer plate is arranged between the liquid crystal and the light source, and the second polarizer plate is arranged between the liquid crystal and the viewer. The band-pass filter absorbs a component of the light, in which a wave-length of the component of the light is no more than 440 nm, and the band-pass filter is arranged between the light source and the viewer.
    Type: Application
    Filed: January 25, 2005
    Publication date: June 16, 2005
    Inventors: Yuka Utsumi, Ikuo Hiyama, Shinichi Komura, Katsumi Kondo
  • Publication number: 20050111075
    Abstract: The present invention provides an electrophoretic display in which an insulating liquid is uniformly provided to the divided microspaces each corresponding to one pixel and display characteristics uniform over the display surface are actualized. The present invention includes a transparent first substrate 1 and a transparent second substrate 2 arranged with a predetermined gap therebetween, charged particles 6 dispersed in an insulating liquid 5 provided to the gap, and a first electrode 3 and a second electrode 4 arranged on either of the first substrate 1 and the second substrate 2, wherein liquid-repellency parts 8 and repellency-lowered parts 9 are arranged on the surface of the first substrate 1 and the surface of the second substrate 2, and the insulating liquid 5 is provided to the repellency-lowered parts on the surface of the first substrate 1 and the surface of the second substrate 2.
    Type: Application
    Filed: December 16, 2004
    Publication date: May 26, 2005
    Inventors: Hiroki Kaneko, Tetsuya Ooshima, Tatsuya Sugita, Shinichi Komura, Shoichi Hirota, Hiroshi Sasaki
  • Patent number: 6894671
    Abstract: A display apparatus is capable of adapting sufficiently to an increase in the display frequency even when using an optical modulation element which has a fairly low response speed and can rewrite an image at a high speed. The display apparatus separately performs mapping of display data for an optical modulation element of each pixel and application of gradation information. The display apparatus divides a display period of one frame into a plurality of sub-frames, controls the input value for the optical modulation element independently per each sub-frame in the plurality of sub-frames, and displays an image with a gradation display using the optical modulation element.
    Type: Grant
    Filed: March 27, 2001
    Date of Patent: May 17, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Tsunenori Yamamoto, Ikuo Hiyama, Shinichi Komura, Tetsuya Aoyama, Hajime Akimoto, Katsuyuki Funahata, Kazuhiro Kuwabara
  • Publication number: 20050083286
    Abstract: A liquid crystal display device includes a liquid crystal panel having a plurality of pixels disposed in a matrix format, a Y-selecting signal generating unit for selecting one or more pixel rows, an X-selecting signal generating unit for selecting one or more pixel columns, and a tone signal generating unit for generating a tone signal for applying the corresponding tone voltage to tone information of said display data onto each of the pixels.
    Type: Application
    Filed: September 30, 2004
    Publication date: April 21, 2005
    Inventors: Yasuyuki Kudo, Tsutomu Furuhashi, Yoshiro Mikami, Shinichi Komura, Toshio Miyazawa
  • Patent number: 6882333
    Abstract: A display apparatus which can display a ultra-high definition picture and high-speed animation is provided. The input picture signal is connected by signal generation circuit which supplies a desired signal to X driver according to n-gradation approximation picture signal output from n-gradation approximation calculating circuit to convert into n-gradation approximation picture signal approximated to binary gradation in every block and n-gradation approximation calculating circuit, Y driver, common voltage generating circuit, signal supply circuit and X driver, and a plurality of pixel parts connected by X signal line and Y driver which extends in the Y direction, and provided to the intersection parts of Y signal line which expands in the X direction.
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: April 19, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Shinichi Komura, Tetsuya Aoyama, Ikuo Hiyama, Tsunenori Yamamoto, Hiroshi Kageyama, Shinya Ohtsuji