Patents by Inventor Miyuki Sugita

Miyuki Sugita 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: 9709863
    Abstract: In a liquid crystal display device, a first substrate adjacent to a liquid crystal display panel is subjected to rubbing in a first direction that is the same as a polarization axis direction of light emitted from the liquid crystal display panel, and a second substrate that interposes a liquid crystal layer with the first substrate is subjected to rubbing in a second direction at a right angle with the first direction. The second direction is made the same as the polarization axis direction of polarized sunglasses to allow visual recognition of the image using the polarized sunglasses. Electrode patterns formed by alternately providing narrow and wide electrodes are arranged on the upper and lower substrates in a direction at a right angle with each other so that the rubbing directions on the upper and lower substrates form a right angle to ensure stable 3D display.
    Type: Grant
    Filed: April 3, 2012
    Date of Patent: July 18, 2017
    Assignee: Japan Display Inc.
    Inventors: Toshio Miyazawa, Terunori Saitou, Tatsuya Sugita, Miyuki Sugita, Shinichiro Oka
  • Patent number: 9354449
    Abstract: An image display device includes: a display panel having a plurality of pixels disposed in a matrix; and a liquid crystal lens disposed on the side of a display surface of the display panel, wherein the pixels of the display panel are divided into a plurality of pixel groups each including two or more pixels, the liquid crystal lens forms, by application of an electric field, a lens array having a plurality of lens portions each corresponding to each of the pixel groups, the lens portion is configured to have a first area having a constant refractive index and a second area having a distribution of refractive index, the second area is disposed at a side portion of the lens portion, and the first area is disposed closer to the center than the second area.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: May 31, 2016
    Assignee: JAPAN DISPLAY INC.
    Inventors: Toshio Miyazawa, Terunori Saitou, Tatsuya Sugita, Miyuki Sugita, Shinichiro Oka
  • Patent number: 9332250
    Abstract: In order to provide a display device capable of improving the display quality at the time of 2D display and 3D display, the present invention provides a display device that includes: a display panel that displays an image; and a liquid crystal lens panel that is arranged on the display surface side of the display panel, controls a refractive index in a cylindrical lens manner to form parallax barriers, and switches 2D display and 3D display, and the liquid crystal lens panel includes: a first transparent substrate that is arranged on the display panel side; a second transparent substrate that is arranged to face the first substrate through a liquid crystal layer; and a first polarizing plate that is formed on the display surface side of the second transparent substrate to control a polarization direction of light transmitting through the liquid crystal lens panel.
    Type: Grant
    Filed: August 7, 2012
    Date of Patent: May 3, 2016
    Assignee: Japan Display Inc.
    Inventors: Tatsuya Sugita, Shinichiro Oka, Shinichi Komura, Toshio Miyazawa, Terunori Saitou, Miyuki Sugita
  • Publication number: 20130215373
    Abstract: In a three-dimensional display device using a liquid crystal lens, a planer electrode is formed on an upper substrate of the liquid crystal lens and strip-like electrodes are formed on a lower substrate of the liquid crystal display lens. The distance between the upper and lower substrates is provided by a bead. At this time, if the bead is present on the strip-like electrode, the lens formed thereon is distorted. In order to prevent this, a bump is formed to cover the strip-like electrode. The distance between the bump and the upper substrate is small, so that the bead is pushed out of the upper part of the strip-like electrode, preventing the lens from being distorted. As a result, it is possible to prevent the crosstalk caused by the lens distortion due to the presence of the bead on the strip-like electrode.
    Type: Application
    Filed: February 18, 2013
    Publication date: August 22, 2013
    Applicant: JAPAN DISPLAY EAST INC.
    Inventors: Miyuki Sugita, Japan Display East Inc.
  • Publication number: 20130100365
    Abstract: It is an object to reduce 3D moiré and provide a higher-quality three dimensional image display device. The three dimensional image display device includes a display panel on which rows of pixels for right eye and rows of pixels for left eye are alternately arranged in a lateral direction, the display panel planarly displaying an image for three dimensional display, and a parallax forming liquid crystal panel for forming a parallax in an image for right eye and an image for left eye displayed by the display panel. Lateral direction center positions, which are vertexes of luminance in the lateral direction of an image for right eye and an image for left eye, where the image for three dimensional display is visually sensed through the parallax forming liquid crystal panel, are respectively positions shifted in the lateral direction in different positions in the screen longitudinal direction.
    Type: Application
    Filed: October 25, 2012
    Publication date: April 25, 2013
    Applicant: JAPAN DISPLAY EAST INC.
    Inventors: JAPAN DISPLAY EAST INC., Miyuki SUGITA
  • Publication number: 20120314144
    Abstract: A display device, having: a display panel; and a liquid crystal lens panel for switching a 2D display and a 3D display with each other, and for forming a parallax barrier by controlling the refractive index as in a cylindrical lens, wherein the liquid crystal lens panel has: a pair of transparent substrates; comb-shaped electrodes, which are formed on the liquid crystal layer side of one of the transparent substrates, run in the X direction and are aligned in the Y direction; flat common electrodes; and post spacers having light transmitting properties for holding the pair of transparent substrates at a predetermined distance, wherein the post spacers are fixed to one of the pair of transparent substrates on the liquid crystal side and are placed in regions away from the comb-shaped electrodes in a plane of the transparent substrate.
    Type: Application
    Filed: June 7, 2012
    Publication date: December 13, 2012
    Inventors: Tatsuya Sugita, Miyuki Sugita, Masanori Yuuki, Shinichiro Oka, Toshio Miyazawa, Terunori Saitou
  • Publication number: 20120257127
    Abstract: In a liquid crystal display device, a first substrate adjacent to a liquid crystal display panel is subjected to rubbing in a first direction that is the same as a polarization axis direction of light emitted from the liquid crystal display panel, and a second substrate that interposes a liquid crystal layer with the first substrate is subjected to rubbing in a second direction at a right angle with the first direction. The second direction is made the same as the polarization axis direction of polarized sunglasses to allow visual recognition of the image using the polarized sunglasses. Electrode patterns formed by alternately providing narrow and wide electrodes are arranged on the upper and lower substrates in a direction at a right angle with each other so that the rubbing directions on the upper and lower substrates form a right angle to ensure stable 3D display.
    Type: Application
    Filed: April 3, 2012
    Publication date: October 11, 2012
    Inventors: Toshio MIYAZAWA, Terunori Saitou, Tatsuya Sugita, Shinichiro Oka, Miyuki Sugita