Patents by Inventor Naoyasu Ikeda

Naoyasu Ikeda 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: 8072444
    Abstract: A light-detecting element, an analog-to-digital converter circuit, and a parallel-serial converter circuit are mounted on a substrate, using a thin film transistor, of an active matrix-type display device, and when a circuit is selected by an external chip-select signal, the luminance is adjusted by transmitting a signal of the light-detecting element, converted into digital data, to a luminance control circuit in sync with a clock signal.
    Type: Grant
    Filed: July 13, 2005
    Date of Patent: December 6, 2011
    Assignee: NEC Corporation
    Inventors: Naoyasu Ikeda, Hiroshi Haga, Tomohiko Otose, Tatsuya Uchikawa, Daisuke Suzuki
  • Patent number: 8054548
    Abstract: In a three-dimensional image display device for displaying color three-dimensional images, a fly eye lens, a display panel, and a light source are provided in this order from the observer side. A display panel has four pixels arrayed in a (2×2) matrix correlated with one lens element of the fly eye lens. In the event that j is a natural number, a pixel magnifying projection width e in a second direction is set in a range of the following expression according to mean interpupillary distance Y of the observers.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: November 8, 2011
    Assignee: NEC Corporation
    Inventors: Shin-ichi Uehara, Naoyasu Ikeda, Nobuaki Takanashi
  • Patent number: 8013844
    Abstract: A lenticular lens is provided in front of a liquid crystal panel composed of a plurality of pixels. In this case, the lenticular lens is arranged so that one cylindrical lens corresponds to two pixels adjacent to each other. Then, light rays outgoing from two pixels are refracted by this one cylindrical lens and intersect with each other at a point positioned on the surface of a tablet, and then reach the right eye and the left eye of a user, respectively.
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: September 6, 2011
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Naoyasu Ikeda, Shin-ichi Uehara, Nobuaki Takanashi
  • Publication number: 20110205623
    Abstract: In an image display device where a lenticular lens, a display panel, and a light source are provided in order from a viewer side, when cylindrical lenses of the lenticular lens are arrayed in a horizontal direction, in first-viewpoint pixels and second-viewpoint pixels of the display panel, openings whose sides which intersect with straight lines in the horizontal direction are not parallel to a vertical direction are formed. And, a shape of the openings of a pair of pixels mutually adjacent in the vertical direction is made line-symmetric with respect to edges of the pixels extending in the horizontal direction as an axis.
    Type: Application
    Filed: May 6, 2011
    Publication date: August 25, 2011
    Applicant: NEC LCD TECHNOLOGIES, LTD.
    Inventors: Shin-ichi UEHARA, Masao IRIGUCHI, Naoyasu IKEDA, Nobuaki TAKANASHI
  • Patent number: 7965365
    Abstract: In an image display device where a lenticular lens, a display panel, and a light source are provided in order from a viewer side, when cylindrical lenses of the lenticular lens are arrayed in a horizontal direction, in first-viewpoint pixels and second-viewpoint pixels of the display panel, openings whose sides which intersect with straight lines in the horizontal direction are not parallel to a vertical direction are formed. And, a shape of the openings of a pair of pixels mutually adjacent in the vertical direction is made line-symmetric with respect to edges of the pixels extending in the horizontal direction as an axis.
    Type: Grant
    Filed: June 23, 2005
    Date of Patent: June 21, 2011
    Assignee: NEC LCD Technologies, Ltd
    Inventors: Shin-ichi Uehara, Masao Iriguchi, Naoyasu Ikeda, Nobuaki Takanashi
  • Publication number: 20110051236
    Abstract: In a three-dimensional image display device for displaying color three-dimensional images, a fly eye lens, a display panel, and a light source are provided in this order from the observer side. A display panel has four pixels arrayed in a (2×2) matrix correlated with one lens element of the fly eye lens. In the event that j is a natural number, a pixel magnifying projection width e in a second direction is set in a range of the following expression according to mean interpupillary distance Y of the observers.
    Type: Application
    Filed: November 5, 2010
    Publication date: March 3, 2011
    Applicant: NEC CORPORATION
    Inventors: Shin-ichi UEHARA, Naoyasu IKEDA, Nobuaki TAKANASHI
  • Publication number: 20110012893
    Abstract: In a liquid crystal display apparatus, one display pixel has a total of six sub pixels, namely, a red sub pixel for a left eye, a green sub pixel for the left eye, a blue sub pixel for the left eye, a red sub pixel for a right eye, a green sub pixel for the right eye, and a blue sub pixel for the right eye. Those sub pixels are arranged in a square area, two in a horizontal direction along which gate lines extend, three in a vertical direction along which data lines extend. The polarity of the data lines with respect to a potential of a common electrode is inverted every time three gate lines are scanned and every frame.
    Type: Application
    Filed: September 28, 2010
    Publication date: January 20, 2011
    Applicant: NEC CORPORATION
    Inventors: Masao Iriguchi, Naoyasu Ikeda, Shin-ichi Uehara
  • Publication number: 20100328245
    Abstract: A lenticular lens is provided in front of a liquid crystal panel composed of a plurality of pixels. In this case, the lenticular lens is arranged so that one cylindrical lens corresponds to two pixels adjacent to each other. Then, light rays outgoing from two pixels are refracted by this one cylindrical lens and intersect with each other at a point positioned on the surface of a tablet, and then reach the right eye and the left eye of a user, respectively.
    Type: Application
    Filed: September 8, 2010
    Publication date: December 30, 2010
    Applicant: NEC LCD TECHNOLOGIES, LTD.
    Inventors: Naoyasu Ikeda, Shin-ichi Uehara, Nobuaki Takanashi
  • Patent number: 7852558
    Abstract: In a three-dimensional image display device for displaying color three-dimensional images, a fly eye lens, a display panel, and a light source are provided in this order from the observer side. A display panel has four pixels arrayed in a (2×2) matrix correlated with one lens element of the fly eye lens. In the event that j is a natural number, a pixel magnifying projection width e in a second direction is set in a range of the following expression according to mean interpupillary distance Y of the observers.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: December 14, 2010
    Assignee: NEC Corporation
    Inventors: Shin-ichi Uehara, Naoyasu Ikeda, Nobuaki Takanashi
  • Patent number: 7812831
    Abstract: A lenticular lens is provided in front of a liquid crystal panel composed of a plurality of pixels. In this case, the lenticular lens is arranged so that one cylindrical lens corresponds to two pixels adjacent to each other. Then, light rays outgoing from two pixels are refracted by this one cylindrical lens and intersect with each other at a point positioned on the surface of a tablet, and then reach the right eye and the left eye of a user, respectively.
    Type: Grant
    Filed: June 17, 2005
    Date of Patent: October 12, 2010
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Naoyasu Ikeda, Shin-ichi Uehara, Nobuaki Takanashi
  • Patent number: 7786962
    Abstract: A three-dimensional image/two-dimensional image display device includes a plurality of display pixels, and a lenticular lens for three-dimensional display. Each display pixel is consisted of M×N number of sub-pixels to be viewed from N view points. A pitch a of sub-pixels arranged in the longitudinal direction of ridge projection of the lenticular lens and a pitch b of the sub-pixels arranged in a direction orthogonal to the longitudinal direction of the lenticular lens satisfy the following expression. The M×N number of sub-pixels included in each of said display pixels are formed within a square area.
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: August 31, 2010
    Assignee: NEC LCD Technologies, Ltd.
    Inventors: Shin-ichi Uehara, Naoyasu Ikeda, Nobuaki Takanashi
  • Publication number: 20100177093
    Abstract: A three-dimensional image/two-dimensional image display device includes a plurality of display pixels, and a lenticular lens for three-dimensional display. Each display pixel is consisted of M×N number of sub-pixels to be viewed from N view points. A pitch a of sub-pixels arranged in the longitudinal direction of ridge projection of the lenticular lens and a pitch b of the sub-pixels arranged in a direction orthogonal to the longitudinal direction of the lenticular lens satisfy the following expression. The M×N number of sub-pixels included in each of said display pixels are formed within a square area.
    Type: Application
    Filed: January 12, 2010
    Publication date: July 15, 2010
    Applicant: NEC Corporation
    Inventors: Shin-ichi UEHARA, Naoyasu Ikeda, Nobuaki Takanashi
  • Publication number: 20100156773
    Abstract: A three-dimensional image/two-dimensional image display device includes a plurality of display pixels, and a lenticular lens for three-dimensional display. Each display pixel is consisted of M×N number of sub-pixels to be viewed from N view points. A pitch a of sub-pixels arranged in the longitudinal direction of ridge projection of the lenticular lens and a pitch b of the sub-pixels arranged in a direction orthogonal to the longitudinal direction of the lenticular lens satisfy the following expression. The M×N number of sub-pixels included in each of said display pixels are formed within a square area.
    Type: Application
    Filed: March 3, 2010
    Publication date: June 24, 2010
    Applicant: NEC Corporation
    Inventors: Shin-ichi UEHARA, Naoyasu IKEDA, Nobuaki TAKANASHI
  • Patent number: 7705844
    Abstract: A three-dimensional image/two-dimensional image display device includes a plurality of display pixels, and a lenticular lens for three-dimensional display. Each display pixel is consisted of M×N number of sub-pixels to be viewed from N view points. A pitch a of sub-pixels arranged in the longitudinal direction of ridge projection of the lenticular lens and a pitch b of the sub-pixels arranged in a direction orthogonal to the longitudinal direction of the lenticular lens satisfy the following expression. The M×N number of sub-pixels included in each of said display pixels are formed within a square area.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: April 27, 2010
    Assignee: NEC Corporation
    Inventors: Shin-ichi Uehara, Naoyasu Ikeda, Nobuaki Takanashi
  • Publication number: 20100091367
    Abstract: In a three-dimensional image display device for displaying color three-dimensional images, a fly eye lens, a display panel, and a light source are provided in this order from the observer side. A display panel has four pixels arrayed in a (2×2) matrix correlated with one lens element of the fly eye lens. In the event that j is a natural number, a pixel magnifying projection width e in a second direction is set in a range of the following expression according to mean interpupillary distance Y of the observers.
    Type: Application
    Filed: December 15, 2009
    Publication date: April 15, 2010
    Applicant: NEC CORPORATION
    Inventors: Shin-ichi UEHARA, Naoyasu IKEDA, Nobuaki TAKANASHI
  • Patent number: 7660038
    Abstract: In a three-dimensional image display device for displaying color three-dimensional images, a fly eye lens, a display panel, and a light source are provided in this order from the observer side. A display panel has four pixels arrayed in a (2×2) matrix correlated with one lens element of the fly eye lens. In the event that j is a natural number, a pixel magnifying projection width e in a second direction is set in a range of the following expression according to mean interpupillary distance Y of the observers.
    Type: Grant
    Filed: January 11, 2008
    Date of Patent: February 9, 2010
    Assignee: NEC Corporation
    Inventors: Shin-ichi Uehara, Naoyasu Ikeda, Nobuaki Takanashi
  • Publication number: 20080218867
    Abstract: An image display device includes a display panel, a lens, a backlight, and a light dispersing member. The display panel includes a plurality of display units including at least pixels for displaying an image for a first point of view and a second point of view, arrayed in a matrix shape. The lens distributes lights transmitted through pixels for the first and second points of view into mutually different directions. The backlight has a plurality of convexes or concaves which refract lights. The light dispersing member is disposed between the display panel and backlight.
    Type: Application
    Filed: February 20, 2008
    Publication date: September 11, 2008
    Applicant: NEC CORPORATION
    Inventors: Shin-Ichi Uehara, Naoyasu Ikeda, Nobuaki Takanashi
  • Patent number: 7420741
    Abstract: An image display device is including a display panel in which a plurality of display units including at least pixels for displaying an image for a first point of view and a second point of view are arrayed in a matrix shape, a lens for distributing lights transmitted through pixels for the first point of view and lights transmitted through pixels for the second point of view into mutually different directions, and an illuminating member which is arranged on a back of the display panel and on whose face toward the display panel a plurality of convexes or concaves are formed, wherein a following formula is satisfied regarding the distance V between adjoining convexes or concaves in the illuminating member, where S is the distance between the pixels and the convexes or concaves, f is the focal distance of the lens, and L is the array cycle of the lens V?L×S/f.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: September 2, 2008
    Assignee: NEC Corporation
    Inventors: Shin-Ichi Uehara, Naoyasu Ikeda, Nobuaki Takanashi
  • Publication number: 20080130107
    Abstract: In a three-dimensional image display device for displaying color three-dimensional images, a fly eye lens, a display panel, and a light source are provided in this order from the observer side. A display panel has four pixels arrayed in a (2×2) matrix correlated with one lens element of the fly eye lens. In the event that j is a natural number, a pixel magnifying projection width e in a second direction is set in a range of the following expression according to mean interpupillary distance Y of the observers.
    Type: Application
    Filed: January 11, 2008
    Publication date: June 5, 2008
    Applicant: NEC CORPORATION
    Inventors: Shin-ichi UEHARA, Naoyasu IKEDA, Nobuaki TAKANASHI
  • Patent number: 7372629
    Abstract: In a three-dimensional image display device for displaying color three-dimensional images, a fly eye lens, a display panel, and a light source are provided in this order from the observer side. A display panel has four pixels arrayed in a (2×2) matrix correlated with one lens element of the fly eye lens. In the event that j is a natural number, a pixel magnifying projection width e in a second direction is set in a range of the following expression according to mean interpupillary distance Y of the observers. e 3 ? Y 2 × j .
    Type: Grant
    Filed: November 5, 2004
    Date of Patent: May 13, 2008
    Assignee: NEC Corporation
    Inventors: Shin-ichi Uehara, Naoyasu Ikeda, Nobuaki Takanashi