Patents by Inventor Takeo Koito

Takeo Koito 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: 9977287
    Abstract: A liquid crystal panel includes: first and second substrates arranged to be opposite each other at a predetermined gap; a liquid crystal layer filled between the first and second substrates; alignment films; a counter electrode pattern formed on the first substrate; and a pixel electrode pattern formed on the first substrate so as to have a plurality of electrode branches, the extension direction of which is bent at one bend point provided near an upper pixel portion from the center of a pixel region, and which are connected at the end portion of at least the upper pixel portion or lower pixel portion, wherein the extension direction of a slit formed near the upper pixel portion from the bend point from among slits formed in the pixel electrode pattern crosses the alignment direction of the liquid crystal layer at an angle of 7° or larger.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: May 22, 2018
    Assignee: Japan Display Inc.
    Inventors: Yoshihiro Sakurai, Hironao Tanaka, Harumi Okuno, Takeo Koito
  • Patent number: 9977545
    Abstract: According to an aspect, a display device with a touch detection function includes: a substrate; a display area in which pixels each constituted by different color regions are arranged in a matrix and that includes color columns in which the color regions of the same colors extend side by side; a touch detection electrode that includes a plurality of conductive thin wires; and a drive electrode. Each of the conductive thin wires includes a plurality of portions at each of which the conductive thin wire extends in a direction at an angle with respect to a direction of extension of the color regions, and a plurality of bent portions at each of which the conductive thin wire is bent with the angle changed. The conductive thin wires include portions each overlapping all of the color columns in a direction orthogonal to the surface of the substrate.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: May 22, 2018
    Assignee: Japan Display Inc.
    Inventors: Takeo Koito, Koji Ishizaki, Hayato Kurasawa
  • Patent number: 9972263
    Abstract: According to an aspect, a display device includes: a plurality of first image regions; a plurality of second image regions arranged alternatingly with the first image regions; one or more first data lines arranged in each of the first image regions; one or more second data lines arranged in each of the second image regions; a constant potential line configured to receive a constant potential; a switching signal line configured to supply a switching signal; and a switching circuit configured to switch a coupling destination of each of the one or more second data lines between any one of the first data lines arranged in a corresponding first image region adjacent to a respective second image region and the constant potential line, based on the switching signal.
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: May 15, 2018
    Assignee: Japan Display Inc.
    Inventors: Yingbao Yang, Daichi Suzuki, Takeo Koito
  • Patent number: 9952700
    Abstract: A display device includes: a plurality of pixel electrodes each of which is provided in each of a plurality of sub-pixels arranged in a display region; a driving electrode provided so as to overlap the plurality of pixel electrodes when seen in a plan view; a plurality of detecting electrodes provided so as to overlap the driving electrode when seen in a plan view; and a dummy electrode provided apart from the detecting electrodes. The detecting electrodes and the dummy electrode include a metal layer or an alloy layer. A ratio of total sum of areas of portions of the plurality sub-pixels which overlap any of the detecting electrodes and the dummy electrode when seen in a plan view to total sum of areas of the plurality of sub-pixels is 1 to 22%.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: April 24, 2018
    Assignee: Japan Display Inc.
    Inventors: Hayato Kurasawa, Koji Ishizaki, Takeo Koito
  • Patent number: 9946385
    Abstract: According to an aspect, a display device with a touch detecting function includes: a substrate; a display area; a touch detection electrode provided with a plurality of conductive thin wires, each of the conductive thin wires including a plurality of thin wire pieces each having a linear shape and including a first end and a second end; a drive electrode; and a display functional layer. The adjacent thin wire pieces are arranged so as to be bent at a bent portion serving as a portion at which the second end of the one thin wire piece of the adjacent thin wire pieces is connected to the first end of the other thin wire piece of the adjacent thin wire pieces, and the conductive thin wires include a bent portion having an angle formed by the adjacent thin wire pieces different from angles of the other bent portions.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: April 17, 2018
    Assignee: Japan Display Inc.
    Inventors: Takeo Koito, Koji Ishizaki, Hayato Kurasawa
  • Publication number: 20180081189
    Abstract: According to one embodiment, a display device includes a display module which emits display light, an optical element which transmits or reflects the display light, and a reflective element which retroreflects the display light reflected from the optical element. The reflective element includes a first reflector including a first retroreflective surface having retroreflective properties, a first end portion, and a second end portion which is more separated from the optical element than the first end portion, and a second reflector including a third end portion, which overlaps the second end portion and is closer to the optical element than the second end portion, and a second retroreflective surface having retroreflective properties.
    Type: Application
    Filed: September 13, 2017
    Publication date: March 22, 2018
    Applicant: Japan Display Inc.
    Inventors: Takeo KOITO, Yudai NUMATA
  • Publication number: 20180074375
    Abstract: According to one embodiment, a display device includes a display module which emits display light, an optical element which transmits or reflects the display light, a reflective element which retroreflects the display light reflected from the optical element, and a first light-guide which imparts directivity toward the optical element to the display light emitted from the display module.
    Type: Application
    Filed: September 12, 2017
    Publication date: March 15, 2018
    Applicant: Japan Display Inc.
    Inventors: Takeo KOITO, Yudai NUMATA
  • Publication number: 20180039356
    Abstract: A detection apparatus includes a first electrode, a second electrode provided at a position that does not overlap with the first electrode, a third electrode arranged facing the first electrode and the second electrode via a spacing, and a detector configured to apply a drive signal to the first electrode and detect an output signal appearing in the second electrode.
    Type: Application
    Filed: July 28, 2017
    Publication date: February 8, 2018
    Inventors: Hayato Kurasawa, Yasuyuki Teranishi, Hiroshi Mizuhashi, Takeo Koito, Shuji Hayashi
  • Publication number: 20180031878
    Abstract: According to one embodiment, a display device includes an illumination unit, a polarizing element which transmits a specific polarized component of light entering from the illumination unit, a display panel which transmits the polarized light entering from the polarizing element while maintaining or converting a polarized state, an optical element comprising a transmission axis which transmits first linearly polarized light, which transmits or reflects the light entering from the display panel and a reflective element which retro-reflects the light reflected by the optical element, and the display panel and the reflective element face one surface of the optical element.
    Type: Application
    Filed: July 26, 2017
    Publication date: February 1, 2018
    Applicant: Japan Display Inc.
    Inventors: Takeo KOITO, Yudai NUMATA
  • Publication number: 20170371467
    Abstract: A display device includes: a plurality of pixel electrodes each of which is provided in each of a plurality of sub-pixels arranged in a display region; a driving electrode provided so as to overlap the plurality of pixel electrodes when seen in a plan view; a plurality of detecting electrodes provided so as to overlap the driving electrode when seen in a plan view; and a dummy electrode provided apart from the detecting electrodes. The detecting electrodes and the dummy electrode include a metal layer or an alloy layer. A ratio of total sum of areas of portions of the plurality sub-pixels which overlap any of the detecting electrodes and the dummy electrode when seen in a plan view to total sum of areas of the plurality of sub-pixels is 1 to 22%.
    Type: Application
    Filed: September 8, 2017
    Publication date: December 28, 2017
    Inventors: Hayato Kurasawa, Koji Ishizaki, Takeo Koito
  • Publication number: 20170315664
    Abstract: A touch panel is disclosed herein. In an embodiment, the touch panel includes a substrate with first and second surfaces, a drive electrode facing the first surface, a plurality of touch detection electrodes facing the second surface, and a dummy electrode between adjacent touch detection electrodes. Each touch detection electrode includes a first conductive thin wire extending parallel to the first and second surfaces. The dummy electrode includes a second conductive thin wire extending along the first conductive thin wire. The first conductive thin wire includes a first bent portion and a second bent portion alternately arranged with the first conductive thin wire having a zigzag pattern. The second conductive thin wire includes a third bent portion and a slit that are alternately arranged. The third bent portion is arranged on a virtual straight line formed by virtually connecting the first bent portions of one first conductive thin wire.
    Type: Application
    Filed: July 18, 2017
    Publication date: November 2, 2017
    Inventors: Koji ISHIZAKI, Hayato KURASAWA, Takeo KOITO
  • Patent number: 9787973
    Abstract: According to one embodiment, a display device includes a switching liquid crystal unit, a display, and a controller. The switching liquid crystal unit includes optical elements switching an aperture pattern including an aperture portion and a light-shielding portion. The display overlaps the switching liquid crystal unit and displays parallax images including right and left eye images. The controller acquires positional information relating to a position of a viewer, and controls a position of the aperture pattern. The controller switches the aperture pattern from a first aperture pattern to a second aperture pattern so that a right eye always views the right eye image and a left eye always views the left eye image, and starts the switching before the viewer moves to an optimal switching position where a luminance viewed from the first aperture pattern is substantially equal to a luminance viewed from the second aperture patterns.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: October 10, 2017
    Assignee: Japan Display Inc.
    Inventors: Takeo Koito, Yingbao Yang, Amane Higashi
  • Publication number: 20170285402
    Abstract: According to one embodiment, a display device includes an optical element which transmits or reflects incident light, and a first reflective element including a first reflective portion and a second reflective portion. The first reflective portion retroreflects reflective light reflected on the optical element. The second reflective portion has an area less than an area of the first reflective portion and regularly reflects the reflective light.
    Type: Application
    Filed: April 4, 2017
    Publication date: October 5, 2017
    Inventors: Takeo Koito, Yudai Numata
  • Publication number: 20170285359
    Abstract: According to one embodiment, a display device includes a display module which emits display light, a polarizing element including a transmission axis which transmits first linearly polarized light, the polarizing element reflecting second linearly polarized light intersecting the transmission axis, and an optical element includes a retroreflector which retroreflects light reflected from the polarizing element, the optical element being curved, and includes a first portion which is concave, and a second portion which is convex and is connected to the first portion.
    Type: Application
    Filed: March 28, 2017
    Publication date: October 5, 2017
    Inventors: Yudai Numata, Takeo Koito
  • Patent number: 9772501
    Abstract: According to an aspect, a display device includes a display part having pixels and a color filter; and a barrier part in which unit areas arranged above the display part, arranged in rows in a first direction, and extending in a second direction intersecting with the first direction. The barrier part includes a barrier substrate that has barrier electrodes arranged for each unit area and extending in the second direction, a counter substrate, a liquid crystal layer, and spacers arranged between the barrier substrate and the counter substrate. Each of the spacers is arranged between one barrier electrode out of the barrier electrodes and the other barrier electrode adjacent to the one barrier electrode, and overlaps with a filter of a color different from a color of a filter of the color filter that overlaps with a spacer adjacent to the spacer in the second direction.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: September 26, 2017
    Assignee: Japan Display Inc.
    Inventors: Takeo Koito, Yingbao Yang
  • Publication number: 20170248829
    Abstract: A display device according to one aspect of the present invention includes: a display unit that displays an image including a plurality of viewpoint images; and a separator that includes a plurality of first electrodes that form, at a first pitch, a plurality of first unit separators that separate the plurality of viewpoint images, a plurality of second electrodes that form a plurality of second unit separators at a second pitch which is different from the first pitch, and a liquid crystal layer. The plurality of first electrodes and the plurality of second electrodes are opposed to each other with the liquid crystal layer interposed therebetween.
    Type: Application
    Filed: February 27, 2017
    Publication date: August 31, 2017
    Inventors: Takeo KOITO, Yingbao YANG, Daichi SUZUKI
  • Publication number: 20170242173
    Abstract: According to one embodiment, a display device includes an optical element urging incident light to be transmitted or reflected, a first reflective element includes a first retroreflective surface in an uneven state on which the light reflected on the optical element is retroreflected, and a first specular reflection surface on which the light reflected on the optical element is specularly reflected, and a second reflective element includes a second retroreflective surface in an uneven state on which the light reflected on the first specular reflection surface is retroreflected.
    Type: Application
    Filed: February 23, 2017
    Publication date: August 24, 2017
    Applicant: Japan Display Inc.
    Inventors: Yudai NUMATA, Takeo KOITO
  • Patent number: 9740328
    Abstract: A display device with a touch detecting function is disclosed herein. In an embodiment, the display device includes a substrate, a display area in which pixels each composed of a plurality of color areas are arranged in a matrix on a plane parallel to a surface of the substrate, a touch detection electrode including a first conductive thin wire extending in a first direction on a plane parallel to the surface of the substrate, a dummy electrode provided to an area in which the first conductive thin wire is not arranged in a direction perpendicular to the surface of the substrate and including a plurality of second conductive thin wires, a drive electrode made of a translucent material to which a display drive signal is applied, the drive electrode being arranged on the substrate, and a display functional layer having a function to display an image on the display area.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: August 22, 2017
    Assignee: Japan Display Inc.
    Inventors: Koji Ishizaki, Hayato Kurasawa, Takeo Koito
  • Patent number: 9743072
    Abstract: A display device including: an image display section in which unit pixels each composed of a plurality of sub-pixels corresponding to a plurality of colors are arranged; and an optical element having a window section allocating light emitted from the image display section in units of the sub-pixels to a plurality of viewpoints, wherein a color arrangement of the sub-pixels of the image display section or an arrangement of the window section of the optical element is set such that, when the image display section is viewed from each of the plurality of viewpoints, in an arrangement of colors of light allocated by the window section of the optical element, a same color is not arranged linearly in a predetermined number of sub-pixels or more in succession in any of a row direction, a column direction, and an oblique direction.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: August 22, 2017
    Assignee: Japan Display Inc.
    Inventor: Takeo Koito
  • Patent number: 9733507
    Abstract: Warpage deformation which is caused when substrates having mutually different linear expansion coefficients are bonded to sandwich a display functional layer is suppressed. A display device has a first substrate, a second substrate bonded to the first substrate so as to be opposed to the first substrate, and a liquid crystal layer serving as a display functional layer disposed between the first substrate and the second substrate. Also, a first linear expansion coefficient of the first substrate provided in the display device is larger than a second linear expansion coefficient of the second substrate, and a first thickness of the first substrate is larger than a second thickness of the second substrate.
    Type: Grant
    Filed: January 9, 2014
    Date of Patent: August 15, 2017
    Assignee: Japan Display Inc.
    Inventors: Yoshihiro Watanabe, Masanobu Ikeda, Takeo Koito, Koji Ishizaki, Hayato Kurasawa