Patents by Inventor Terunori Saitou

Terunori Saitou 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: 9599853
    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: March 28, 2016
    Date of Patent: March 21, 2017
    Assignee: Japan Display Inc.
    Inventors: Tatsuya Sugita, Shinichiro Oka, Shinichi Komura, Toshio Miyazawa, Terunori Saitou
  • Patent number: 9405138
    Abstract: A liquid crystal display device is configured to form a three dimensional image on the vertical view by applying a first voltage between a narrow electrode on the first substrate and a wide electrode on the second substrate, and a second voltage lower than the first voltage between the wide electrode on the first substrate and the wide electrode on the second substrate, and to form a three dimensional image on the horizontal view by applying the first voltage between the wide electrode on the first substrate and a narrow electrode on the second substrate, and the second voltage between the wide electrode on the first substrate and the wide electrode on the second substrate so as to reduce generation of domain in the horizontal electric field.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: August 2, 2016
    Assignee: JAPAN DISPLAY INC.
    Inventors: Terunori Saitou, Toshio Miyazawa, Tatsuya Sugita, Shinichiro Oka, Tomohiko Naganuma
  • Publication number: 20160209704
    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: Application
    Filed: March 28, 2016
    Publication date: July 21, 2016
    Inventors: Tatsuya SUGITA, Shinichiro OKA, Shinichi KOMURA, Toshio Miyazawa, Terunori Saitou
  • Patent number: 9372376
    Abstract: A method of manufacturing a liquid crystal display device having a substrate with a display area, a control area adjacent to the display area, and terminals. The method includes forming an interlayer insulating film and an a-Si film below an image signal line in the display area and below a line in the same layer as the image signal line in the control area, forming a scribing line outside the terminals, forming a ground line in the same layer as the scan line outside the scribing line, forming the interlayer insulating film outside the terminal, without forming the a-Si film on the interlayer insulating film, forming a static electricity protection line coupled to the terminal on the interlayer insulating film, the static electricity protection line being coupled to other static electricity protection lines outside the ground line, and, after the steps above, separating the substrate along the scribing line.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: June 21, 2016
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co. LTD
    Inventors: Terunori Saitou, Hidekazu Miyake, Takuo Kaitoh, Yoshiharu Owaku
  • 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
  • Patent number: 9128294
    Abstract: A liquid crystal material is driven in a twisted nematic mode so that while liquid crystal molecules lose, on a stripe electrode, rotary power toward a direction along an electric field by a voltage applied between the stripe electrode and a second electrode and form, in a region between the adjacent stripe electrodes, refractive index distribution of a lenticular lens that includes a cylindrical lens in which a cylindrical axis is arranged in a first direction. The cylindrical lens faces at least two rows of pixels, and has an effective refractive index for causing light from the at least two rows of pixels to advance in separating directions from each other after emission from a second polarizing plate. A distance d of a cell gap and an interval s between the adjacent stripe electrodes satisfy the relation of 3.5?s/d?7.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: September 8, 2015
    Assignee: JAPAN DISPLAY INC.
    Inventors: Tatsuya Sugita, Tomohiko Naganuma, Shinichiro Oka, Toshio Miyazawa, Terunori Saitou
  • Patent number: 9110359
    Abstract: A display device having a liquid crystal lens arranged on a display panel, wherein the display panel includes pixels arranged in a first direction and arranged in a second direction intersecting with the first direction. Each of the pixels includes a plurality of sub-pixels arranged in a first direction and having a first width in the first direction and a second width in the second direction, and the liquid crystal lens is formed by interposing a liquid crystal between a first substrate and a second substrate. The first substrate includes a plurality of first electrodes in stripes, extending in the first direction, and arranged in the second direction, and the second substrate includes a plurality of second electrodes in stripes and a plurality of third electrodes in stripes, extending in the second direction, and arranged in the first direction at predetermined intervals.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: August 18, 2015
    Assignee: JAPAN DISPLAY INC.
    Inventors: Toshio Miyazawa, Terunori Saitou
  • Patent number: 8988619
    Abstract: There is provided a technology capable of reducing crosstalk at the time of 3D display in a display device using a liquid crystal lens that forms cylindrical lenses by controlling a voltage applied to a liquid crystal panel. The display device includes a liquid crystal display panel which includes a substrate including a plurality of strip-shaped transparent electrodes and a plurality of strip-shaped light shielding portions overlapping with the electrodes. The display device displays an image by switching a two-dimensional display and a three-dimensional display, and the cylindrical lenses making up a parallax barrier, are formed by controlling a refraction index of a liquid crystal layer.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: March 24, 2015
    Assignee: Japan Display Inc.
    Inventors: Shinichiro Oka, Tatsuya Sugita, Shinichi Komura, Toshio Miyazawa, Terunori Saitou
  • Patent number: 8963064
    Abstract: A photosensor array includes plural photosensor pixels. Each of the photosensor pixels includes a lower electrode, an amorphous silicon film, an n-type amorphous silicon film, and an upper electrode. The photosensor array includes plural scanning lines connected to the upper electrodes, plural read lines connected to the lower electrodes, a scanning circuit that is connected to the plural scanning lines, and sequentially supplies a selection scanning signal of a first voltage to the respective scanning lines, a first unit that inputs a second voltage higher than the first voltage to the plural read lines in a blanking period of one horizontal scanning period, and thereafter puts the plural read lines into the floating state, and a second unit that outputs a voltage change in each of the read lines within one horizontal scanning period as the sensor output voltage of the photosensor pixel.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: February 24, 2015
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Takeshi Yonekura, Toshio Miyazawa, Atsushi Hasegawa, Terunori Saitou, Kozo Yasuda
  • Publication number: 20140267958
    Abstract: A liquid crystal material is driven in a twisted nematic mode so that while liquid crystal molecules lose, on a stripe electrode, rotary power toward a direction along an electric field by a voltage applied between the stripe electrode and a second electrode and form, in a region between the adjacent stripe electrodes, refractive index distribution of a lenticular lens that includes a cylindrical lens in which a cylindrical axis is arranged in a first direction. The cylindrical lens faces at least two rows of pixels, and has an effective refractive index for causing light from the at least two rows of pixels to advance in separating directions from each other after emission from a second polarizing plate. A distance d of a cell gap and an interval s between the adjacent stripe electrodes satisfy the relation of 3.5?s/d?7.
    Type: Application
    Filed: March 11, 2014
    Publication date: September 18, 2014
    Applicant: JAPAN DISPLAY INC.
    Inventors: Tatsuya SUGITA, Tomohiko NAGANUMA, Shinichiro OKA, Toshio MIYAZAWA, Terunori SAITOU
  • Publication number: 20140232949
    Abstract: A display device having a liquid crystal lens arranged on a display panel, wherein the display panel includes pixels arranged in a first direction and arranged in a second direction intersecting with the first direction. Each of the pixels includes a plurality of sub-pixels arranged in a first direction and having a first width in the first direction and a second width in the second direction, and the liquid crystal lens is formed by interposing a liquid crystal between a first substrate and a second substrate. The first substrate includes a plurality of first electrodes in stripes, extending in the first direction, and arranged in the second direction, and the second substrate includes a plurality of second electrodes in stripes and a plurality of third electrodes in stripes, extending in the second direction, and arranged in the first direction at predetermined intervals.
    Type: Application
    Filed: April 25, 2014
    Publication date: August 21, 2014
    Applicant: Japan Display Inc.
    Inventors: Toshio Miyazawa, Terunori Saitou
  • Patent number: 8786812
    Abstract: A liquid crystal lens is provided on a liquid crystal display panel. Electrodes extending vertically to a plane of drawing are provided on an upper substrate of the liquid crystal lens at predetermined intervals. No electrodes are provided on a lower substrate. An initial alignment of liquid crystal molecules in the liquid crystal lens is vertically directed with respect to the plane of the drawing. A voltage applied to the upper substrate electrodes generates a transverse electric field to rotate the liquid crystal molecules. Polarization light emitted from the liquid crystal display panel is vertically directed to the plane of the drawing, which generates a refractive index distribution of the polarization light in a liquid crystal layer to form a convex lens within the liquid crystal lens. This lens allows first and second pixels to be recognized by right and left eyes to allow a three-dimensional display.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: July 22, 2014
    Assignee: Japan Display Inc.
    Inventors: Toshio Miyazawa, Terunori Saitou
  • Publication number: 20140192283
    Abstract: There is provided a technology capable of reducing crosstalk at the time of 3D display in a display device using a liquid crystal lens that forms cylindrical lenses by controlling a voltage applied to a liquid crystal panel. The display device includes a liquid crystal display panel which includes a substrate including a plurality of strip-shaped transparent electrodes and a plurality of strip-shaped light shielding portions overlapping with the electrodes. The display device displays an image by switching a two-dimensional display and a three-dimensional display, and the cylindrical lenses making up a parallax barrier, are formed by controlling a refraction index of a liquid crystal layer.
    Type: Application
    Filed: March 5, 2014
    Publication date: July 10, 2014
    Applicant: Japan Display Inc.
    Inventors: Shinichiro OKA, Tatsuya Sugita, Shinichi Komura, Toshio Miyazawa, Terunori Saitou
  • Patent number: 8748792
    Abstract: A photosensor includes a lower electrode formed of a metal film, an amorphous silicon film disposed on the lower electrode, an n-type amorphous silicon film disposed on the amorphous silicon film, an upper electrode that is disposed on the n-type amorphous silicon film, and receives a first reference voltage, a capacitive element connected between the lower electrode and a second reference voltage, a switch circuit that inputs a first supply voltage to the lower electrode in an on-state, and puts the lower electrode into a floating state in an off-state, and a detector circuit that detects a voltage change in the lower electrode after irradiating the amorphous silicon film for a given period with light when the switch circuit is on.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: June 10, 2014
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Toshio Miyazawa, Atsushi Hasegawa, Terunori Saitou, Kozo Yasuda, Takeshi Yonekura
  • Publication number: 20140104518
    Abstract: A liquid crystal display device is configured to form a three dimensional image on the vertical view by applying a first voltage between a narrow electrode on the first substrate and a wide electrode on the second substrate, and a second voltage lower than the first voltage between the wide electrode on the first substrate and the wide electrode on the second substrate, and to form a three dimensional image on the horizontal view by applying the first voltage between the wide electrode on the first substrate and a narrow electrode on the second substrate, and the second voltage between the wide electrode on the first substrate and the wide electrode on the second substrate so as to reduce generation of domain in the horizontal electric field.
    Type: Application
    Filed: October 10, 2013
    Publication date: April 17, 2014
    Applicant: JAPAN DISPLAY INC.
    Inventors: Terunori SAITOU, Toshio MIYAZAWA, Tatsuya SUGITA, Shinichiro OKA, Tomohiko NAGANUMA
  • Publication number: 20140106640
    Abstract: A method of manufacturing a liquid crystal display device having a substrate with a display area, a control area adjacent to the display area, and terminals. The method includes forming an interlayer insulating film and an a-Si film below an image signal line in the display area and below a line in the same layer as the image signal line in the control area, forming a scribing line outside the terminals, forming a ground line in the same layer as the scan line outside the scribing line, forming the interlayer insulating film outside the terminal, without forming the a-Si film on the interlayer insulating film, forming a static electricity protection line coupled to the terminal on the interlayer insulating film, the static electricity protection line being coupled to other static electricity protection lines outside the ground line, and, after the steps above, separating the substrate along the scribing line.
    Type: Application
    Filed: December 13, 2013
    Publication date: April 17, 2014
    Applicants: Panasonic Liquid Crystal Display Co., Ltd., Japan Display Inc.
    Inventors: Terunori SAITOU, Hidekazu MIYAKE, Takuo KAITOH, Yoshiharu OWAKU
  • Publication number: 20140104545
    Abstract: A display device includes an display panel, a liquid crystal lens panel disposed on the display panel, and adapted to form a lenticular lens by switching, and a polarization plate disposed on an opposite side of the liquid crystal lens panel to the display panel, the liquid crystal lens panel includes a liquid crystal layer, a first insulating substrate disposed on the display panel side of the liquid crystal layer, a second insulating substrate disposed on the polarization plate side, and having an oriented film with a rubbing direction perpendicular to a rubbing direction of an oriented film of the first insulating substrate, and a plurality of strip electrodes extending in one direction, arranged side by side on the first insulating substrate, wherein a polarization axis direction of the polarization plate is the same as the rubbing direction of the second oriented film.
    Type: Application
    Filed: October 10, 2013
    Publication date: April 17, 2014
    Applicant: Japan Display Inc.
    Inventors: Toshio MIYAZAWA, Terunori SAITOU, Tatsuya SUGITA, Shinichiro OKA
  • Patent number: 8624256
    Abstract: The present invention provides a display device which forms a drive circuit using a bottom-gate-type TFT made of poly-Si which generates a small leak current in a periphery of a display region. A gate electrode is made of Mo having a high melting point, and a gate insulation film is formed on the gate electrode. A channel layer constituted of a poly-Si layer is formed on the gate insulation film, and the poly-Si layer is covered with an a-Si layer. An n+Si layer is formed on the a-Si layer, and an SD electrode is formed on the n+Si layer. Although holes are induced in the poly-Si layer when a negative voltage (inverse bias) is applied to the gate electrode, the holes cannot pass through the a-Si layer and hence, no drain current flows. Accordingly, it is possible to realize a bottom-gate-type TFT using poly-silicon which generates a small leak current.
    Type: Grant
    Filed: July 30, 2008
    Date of Patent: January 7, 2014
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Takuo Kaitoh, Hidekazu Miyake, Takeshi Sakai, Terunori Saitou