Patents by Inventor Koji Shigemura

Koji Shigemura 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: 20190149800
    Abstract: A stereoscopic display apparatus includes: a projector of a planar shape that projects images by using light acquired by dividing light rays; an optical device of a planar shape that outputs incident light incident from a first face from a second face; and a supporting unit that supports at least one of the projector and the optical device to be in a first state or a second state in an orthogonal three-dimensional coordinate system. The optical device outputs incident light incident from a first point on a projection surface of the projector to a second point having plane symmetry with respect to a plane of the optical device as a reference.
    Type: Application
    Filed: January 9, 2019
    Publication date: May 16, 2019
    Inventors: Kazunori MASUMURA, Tetsushi SATO, Koji SHIGEMURA
  • Publication number: 20190121172
    Abstract: Provided is a microlouver (optical element) having a transparent layer inclined to attain a desired viewing angle. The optical element includes patterned transparent layer and light absorbing layer on a transparent substrate. At least a part of the members of the transparent layer and the light absorbing layer are inclined with respect to the normal to the plane of the transparent substrate where patterns of the transparent layer and the light absorbing layer are provided. The inclination satisfies |??(x)??(x)|<?, where ??(x) represents a first angle which is an outgoing angle of light transmitted through the transparent layer from the transparent substrate at a point x on the plane, ?(x) represents a second angle which is an angle of sight of an observer, and ? represents a third angle which is a threshold angle to attain the lowest desired brightness.
    Type: Application
    Filed: October 11, 2018
    Publication date: April 25, 2019
    Applicant: TIANMA JAPAN, LTD.
    Inventors: Koji SHIGEMURA, Kunihiro SHIOTA
  • Patent number: 10237542
    Abstract: The stereoscopic image display device displaying a stereoscopic image by being placed on a movable object includes: a stereoscopic display panel module which projects images of different parallaxes for each of neighboring spatial regions; a movable object state detecting module which detects state information regarding a position state of the movable object; an observing distance calculation module which calculates a relative distance between the stereoscopic display panel module and a specific observer located on a display surface side thereof based on the state information; a device characteristic data saving module which saves device characteristic data regarding the stereoscopic display panel module; and a display setting adjusting module which adjusts display setting of the stereoscopic image by referring to the relative distance and the device characteristic data.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: March 19, 2019
    Assignee: NLT TECHNOLOGIES, LTD.
    Inventors: Takefumi Hasegawa, Koji Shigemura
  • Patent number: 10237541
    Abstract: The stereoscopic image display device includes: an observer position measuring unit which measures the observing position of the observer; an image processing unit which calculates the relative position of the observing position of the observer and the stereoscopic display panel, calculates the luminance adjustment amount suited for stereoscopic image display for the relative position, and performs luminance adjustment processing on the image data according to the luminance adjustment amount; and a stereoscopic display panel unit which projects the image data on which the luminance adjustment processing is performed to the right eye and the left eye of the observer via the stereoscopic display panel.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: March 19, 2019
    Assignee: NLT TECHNOLOGIES, LTD.
    Inventors: Takefumi Hasegawa, Koji Shigemura
  • Publication number: 20190080640
    Abstract: An example of display apparatus includes: a display panel in which unit pixels each constituted by at least a first subpixel displaying a first pattern and a second subpixel displaying a second pattern are alternately arranged in a row or column direction; and a signal processing unit modulating, for image data including the first pattern and image data including the second pattern, a difference in maximum gradation values in the image data, and controlling synchronization or non-synchronization of a rise or fall between bit signals of a coupled image signal input to the display panel.
    Type: Application
    Filed: August 21, 2018
    Publication date: March 14, 2019
    Applicant: TIANMA JAPAN, LTD.
    Inventors: Kazunori MASUMURA, Koji SHIGEMURA, Tetsushi SATO
  • Patent number: 10225541
    Abstract: A stereoscopic display apparatus includes: a projector of a planar shape that projects images by using light acquired by dividing light rays; an optical device of a planar shape that outputs incident light incident from a first face from a second face; and a supporting unit that supports at least one of the projector and the optical device to be in a first state or a second state in an orthogonal three-dimensional coordinate system. The optical device outputs incident light incident from a first point on a projection surface of the projector to a second point having plane symmetry with respect to a plane of the optical device as a reference.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: March 5, 2019
    Assignee: TIANMA JAPAN, LTD.
    Inventors: Kazunori Masumura, Tetsushi Sato, Koji Shigemura
  • Publication number: 20190018256
    Abstract: A display device includes a display panel including a plurality of pixels arrayed along first and second directions, a distribution unit that distributes light emitted from each pixel configured to display a parallax image corresponding to each of a plurality of viewpoints, and a light blocking unit between the display panel and the distribution unit. The distribution unit distributes light emitted from each of the pixels to the plurality of viewpoints along the first direction in a first display state where the display panel displays a parallax image, or stops distributing emitted light in a second display state, displaying a planar image. The light blocking unit forms, along the first direction, a plurality of first light blocking areas each extending along the second direction blocking some emitted light in the first display state, and stops forming the first light blocking areas in the second display state.
    Type: Application
    Filed: July 13, 2018
    Publication date: January 17, 2019
    Inventors: Jin MATSUSHIMA, Koji SHIGEMURA, Yukie KEICHO, Tetsushi SATO
  • Patent number: 10101504
    Abstract: An optical element includes a substrate and a resin and satisfies the following formula, RTmax/RTmin?9/5, wherein RTmin represents the resin thickness at the thinnest regions of a major patterned component that is made of the resin, and RTmax represents the resin thickness at the thickest regions of the major patterned component which is made of the resin.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: October 16, 2018
    Assignee: NLT TECHNOLOGIES, LTD.
    Inventors: Jin Matsushima, Koji Shigemura
  • Patent number: 10096275
    Abstract: An example of display apparatus includes: a display panel in which unit pixels each constituted by at least a first subpixel displaying a first pattern and a second subpixel displaying a second pattern are alternately arranged in a row or column direction; and a signal processing unit modulating, for image data including the first pattern and image data including the second pattern, a difference in maximum gradation values in the image data, and controlling synchronization or non-synchronization of a rise or fall between bit signals of a coupled image signal input to the display panel.
    Type: Grant
    Filed: August 2, 2016
    Date of Patent: October 9, 2018
    Assignee: NLT TECHNOLOGIES, LTD.
    Inventors: Kazunori Masumura, Koji Shigemura, Tetsushi Sato
  • Publication number: 20180188547
    Abstract: A substrate laminating apparatus, including a first vacuum chamber including a first opening; a first table provided inside the first opening for holding a first substrate; a second vacuum chamber including a second opening; a second table provided inside the second opening for holding a second substrate, wherein the substrates are laminated by reducing a pressure in a closed space formed by having the first opening faced with the second opening. The apparatus also includes a vacuum evacuation unit connected to the first vacuum chamber or the second vacuum chamber and performs reduced-pressure evacuation of the closed space. When there is a direction along which priority is given on lamination precision when laminating the first and second substrates, and the direction is defined as a lamination precision priority direction, a reduced-pressure evacuation direction done by the vacuum evacuation unit is a direction different from the lamination precision priority direction.
    Type: Application
    Filed: February 26, 2018
    Publication date: July 5, 2018
    Applicant: Tianma Japan, Ltd.
    Inventors: Tetsuroh ASAKURA, Koji SHIGEMURA
  • Publication number: 20180063518
    Abstract: The stereoscopic image display device which displays images corresponding to each of a plurality of viewpoints includes: a stereoscopic image display panel which includes a display panel in which a plurality of pixels are arranged and a light-ray separating module provided on the display panel for separating parallax images from each of the pixels towards a plurality of N-viewpoints (N is a natural number of 2 or larger) according to the layout direction of each of the pixels; an observer position measuring unit which measures an observing position of the observer who is facing the display surface; a relative position calculating unit which calculates a relative position of the observer with respect to the stereoscopic image display panel based on the measurement result; and an image generation processing unit which generates viewpoint image by corresponding to the relative position and outputs the image towards the stereoscopic image display panel.
    Type: Application
    Filed: October 19, 2017
    Publication date: March 1, 2018
    Applicant: TIANMA JAPAN, LTD.
    Inventor: Koji SHIGEMURA
  • Patent number: 9904062
    Abstract: To provide a substrate laminating apparatus and a substrate laminating method capable of laminating two substrates highly precisely while achieving low cost and saving space. The substrate laminating apparatus includes an upper-substrate camera group provided to a lower vacuum chamber for capturing an image of an upper substrate fixed to an upper vacuum chamber. The upper-substrate camera group captures images of a first upper-substrate alignment mark and a second upper-substrate alignment mark of the upper substrate fixed to the upper vacuum chamber by actions synchronized with the lower vacuum chamber. Thereby, it is possible to save the space and to lower the cost by reducing the number of mechanical components.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: February 27, 2018
    Assignee: NLT TECHNOLOGIES, LTD.
    Inventors: Tetsuroh Asakura, Koji Shigemura
  • Patent number: 9880395
    Abstract: Movement of a display device is detected, and an image is displayed in stereoscopic display or planar display depending on the detected movement.
    Type: Grant
    Filed: August 3, 2015
    Date of Patent: January 30, 2018
    Assignees: NEC CORPORATION, Tianma Japan, Ltd.
    Inventors: Tetsusi Sato, Koji Shigemura, Masahiro Serizawa
  • Publication number: 20180027225
    Abstract: A stereoscopic display apparatus includes: a projector of a planar shape that projects images by using light acquired by dividing light rays; an optical device of a planar shape that outputs incident light incident from a first face from a second face; and a supporting unit that supports at least one of the projector and the optical device to be in a first state or a second state in an orthogonal three-dimensional coordinate system. The optical device outputs incident light incident from a first point on a projection surface of the projector to a second point having plane symmetry with respect to a plane of the optical device as a reference.
    Type: Application
    Filed: July 21, 2017
    Publication date: January 25, 2018
    Inventors: Kazunori MASUMURA, Tetsushi SATO, Koji SHIGEMURA
  • Patent number: 9826222
    Abstract: The stereoscopic image display device which displays images corresponding to each of a plurality of viewpoints includes: a stereoscopic image display panel which includes a display panel in which a plurality of pixels are arranged and a light-ray separating module provided on the display panel for separating parallax images from each of the pixels towards a plurality of N-viewpoints (N is a natural number of 2 or larger) according to the layout direction of each of the pixels; an observer position measuring unit which measures an observing position of the observer who is facing the display surface; a relative position calculating unit which calculates a relative position of the observer with respect to the stereoscopic image display panel based on the measurement result; and an image generation processing unit which generates viewpoint image by corresponding to the relative position and outputs the image towards the stereoscopic image display panel.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: November 21, 2017
    Assignee: NLT TECHNOLOGIES, LTD.
    Inventor: Koji Shigemura
  • Patent number: 9638924
    Abstract: A stereoscopic image display device includes: a display panel on which pixels each constituted with a plurality of sub-pixels formed with electro-optic elements by corresponding to parallax images are arranged in matrix; and an optical module which distributes light emitted from the pixels arranged in the first and second directions to different directions from each other along the first and second directions, respectively. The display panel includes first and second non-control regions which are the regions existing between boundaries of apertures of the sub-pixels where control of electric-optic conversion cannot be done. An intersection part of the first and second non-control regions is disposed on a lattice point that is an intersection point of segments in a unit lattice constituted with lattice lines, and the first or the second non-control region is bent at least once within the unit lattice with respect to the lattice lines.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: May 2, 2017
    Assignee: NLT TECHNOLOGIES, LTD.
    Inventors: Takuya Asai, Koji Shigemura
  • Patent number: 9606366
    Abstract: A stereoscopic image display device includes: a display panel in which pixels each constituted with N×N pieces (N is a natural number of 2 or larger) of sub-pixels colored in M (M is a natural number of 1 or larger) primary colors are arranged in matrix; and an optical separation module in which optical elements which distribute exit light from each of the pixels according to parallax images in a first direction and a second direction along layout of the pixels are arranged by being corresponded to each of the pixels. The neighboring sub-pixels within the pixels are of different colors, array pitches of the sub-pixels are uniform in the first and second directions, same numbers of the parallax images are displayed for the first direction and the second direction within the pixels, and numbers of the sub-pixels in different colors within the parallax images are equivalent.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: March 28, 2017
    Assignee: NLT TECHNOLOGIES, LTD.
    Inventor: Koji Shigemura
  • Publication number: 20170039927
    Abstract: An example of display apparatus includes: a display panel in which unit pixels each constituted by at least a first subpixel displaying a first pattern and a second subpixel displaying a second pattern are alternately arranged in a row or column direction; and a signal processing unit modulating, for image data including the first pattern and image data including the second pattern, a difference in maximum gradation values in the image data, and controlling synchronization or non-synchronization of a rise or fall between bit signals of a coupled image signal input to the display panel.
    Type: Application
    Filed: August 2, 2016
    Publication date: February 9, 2017
    Applicant: NLT TECHNOLOGIES, LTD.
    Inventors: Kazunori MASUMURA, Koji SHIGEMURA, Tetsushi SATO
  • Patent number: 9541813
    Abstract: An image display device having improved image retention capability by analyzing the mechanism behind the creation of an unwanted electric field applied to an element after a power supply is turned off, and devising a drive method and so forth for compensating for the same, is provided. Electrophoretic particles contain three types of charged particles, C (cyan), M (magenta), and Y (yellow) that are mutually different in color and threshold voltage for starting electrophoresis. When the threshold voltages of C (cyan), M (magenta) and Y (yellow) are respectively Vth3, Vth2, and Vth3, these satisfy the relationship |Vth3|<|Vth2|<|Vth1|. Further, a voltage application unit applies a voltage (VE) different from a reference potential during the final period of image update period. The voltage (VE) is a compensation voltage that suppresses the movement of charged particles.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: January 10, 2017
    Assignee: NLT TECHNOLOGIES, LTD.
    Inventors: Michiaki Sakamoto, Koji Shigemura
  • Patent number: 9541765
    Abstract: An image display device includes a display element having a unit of display comprising sub pixels displaying images for first and second view points, and an optical unit that distributes light emitted from respective sub pixels into different first directions. When a region surrounded a black matrix in the sub pixel is defined as an aperture, the sub pixels form a base unit that is an adjoining pixel pair including two sub pixels arranged with a data line therebetween. When virtual lines evenly dividing a width of the sub pixel in the first direction into K+1 pieces are presumed, K number of storage capacitor lines are arranged across at least one virtual line in the aperture. In the adjoining pixel pair, the K number of storage capacitor lines of one sub pixel are nonparallel to the K number of storage capacitor lines of the other sub pixel.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: January 10, 2017
    Assignee: NLT TECHNOLOGIES, LTD.
    Inventors: Shinya Niioka, Koji Shigemura