Patents by Inventor Kazutaka Hanaoka

Kazutaka Hanaoka 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: 10311804
    Abstract: In particular case second vertical scanning period includes a write period in which a first potential difference V1 is to be given to an upper electrode and a lower electrode. In another particular case, the second vertical scanning period includes a write period in which a second potential difference V2 being greater than the first potential difference V1 is given to the upper electrode and the lower electrode. In the former write period, substantially the same potential as that of a counter electrode is given to the upper electrode, and a different potential from that of the counter electrode is given to the lower electrode. In the latter write period, substantially the same potential as that of the counter electrode is given to the lower electrode, and a different potential from that of the counter electrode is given to the upper electrode.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: June 4, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Iori Aoyama, Takahiro Sasaki, Yuichi Kita, Kazutaka Hanaoka
  • Publication number: 20190164511
    Abstract: In a liquid crystal display device (100), each pixel row group is selected by a common scan signal voltage, each pixel row group including N pixel rows which adjoin one another in a column direction. Where two pixel rows which adjoin each other in a column direction and which are included in different pixel row groups are a first pixel row and a second pixel row, the first pixel row includes a pixel which has a pixel electrode (16) capacitively coupled with a gate bus line (12) which is associated with the second pixel row. When the first pixel row is included in the qth group, the second pixel row is included in the (q+1)th group. A scan signal voltage supplied to gate bus lines which are associated with the (q+1)th group switches from low to high before a scan signal voltage supplied to gate bus lines which are associated with the qth group switches from high to low.
    Type: Application
    Filed: March 14, 2017
    Publication date: May 30, 2019
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Iori AOYAMA, Yuichi KITA, Takahiro SASAKI, Hidekazu MIYATA, Kazutaka HANAOKA
  • Publication number: 20190113810
    Abstract: A liquid crystal display apparatus includes a liquid crystal display panel including a first substrate, a second substrate, and a liquid crystal layer and a plurality of pixels. The first substrate includes a first electrode provided in each of the pixels and a first horizontal alignment film that determines a pretilt orientation of a liquid crystal molecule. The second substrate includes a second electrode provided to face the first electrode and a second horizontal alignment film that determines the pretilt orientation of the liquid crystal molecule. Each of the first and second horizontal alignment films is a photoalignment film. At least one of the first substrate and the second substrate includes an anchoring structure in each of the pixels.
    Type: Application
    Filed: March 28, 2017
    Publication date: April 18, 2019
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: TAKAHIRO SASAKI, IORI AOYAMA, YUICHI KITA, KAZUTAKA HANAOKA
  • Patent number: 10216034
    Abstract: A liquid crystal display device (100) includes a first liquid crystal display panel (1) configured to be capable of taking a transparent displaying state and a second liquid crystal display panel (2), such that the first liquid crystal display panel allows at least a portion of light going out of the second liquid crystal display panel to be transmitted in the transparent displaying state.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: February 26, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yuichi Kita, Yoshiki Nakatani, Takahiro Sasaki, Iori Aoyama, Kazutaka Hanaoka
  • Patent number: 10209582
    Abstract: A liquid crystal display device (100) includes a liquid crystal display panel (1) including a first substrate (10), a second substrate (20), and a liquid crystal layer (30). The first substrate includes a first electrode (11) provided for each pixel, and a second electrode (12) for generating a lateral field across the liquid crystal layer in cooperation with the first electrode. The second substrate includes a third electrode (21) for generating a vertical field across the liquid crystal layer in cooperation with the first electrode and the second electrode. Each pixel is capable of switchably presenting a black displaying state where a vertical field is generated across the liquid crystal layer, a white displaying state where a lateral field is generated across the liquid crystal layer, and a transparent displaying state where a rear face side of the liquid crystal display panel is visible in a see-through manner with no voltage being applied to the liquid crystal layer.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: February 19, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Iori Aoyama, Yuichi Kita, Takahiro Sasaki, Yoshiki Nakatani, Kazutaka Hanaoka
  • Patent number: 10175542
    Abstract: A liquid crystal display device (100) includes a liquid crystal display panel (1) and an illumination element (2), and is capable of switching between: a first mode of displaying in which displaying is performed by using a plurality of color rays emitted from the illumination element; and a second mode of displaying in which the background is allowed to be perceived, with no color rays being emitted from the illumination element.
    Type: Grant
    Filed: April 11, 2016
    Date of Patent: January 8, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takahiro Sasaki, Iori Aoyama, Yuichi Kita, Kazutaka Hanaoka, Hidefumi Yoshida
  • Publication number: 20180350311
    Abstract: In particular case second vertical scanning period includes a write period in which a first potential difference V1 is to be given to an upper electrode and a lower electrode. In another particular case, the second vertical scanning period includes a write period in which a second potential difference V2 being greater than the first potential difference V1 is given to the upper electrode and the lower electrode. In the former write period, substantially the same potential as that of a counter electrode is given to the upper electrode, and a different potential from that of the counter electrode is given to the lower electrode. In the latter write period, substantially the same potential as that of the counter electrode is given to the lower electrode, and a different potential from that of the counter electrode is given to the upper electrode.
    Type: Application
    Filed: May 19, 2016
    Publication date: December 6, 2018
    Inventors: IORI AOYAMA, TAKAHIRO SASAKI, YUICHI KITA, KAZUTAKA HANAOKA
  • Patent number: 10067397
    Abstract: A first substrate (10) in a liquid crystal display device (100) includes a first electrode (11) provided in each pixel and a second electrode (12) generating a lateral electric field in a liquid crystal layer (30) together with the first electrode. A second substrate (20) includes a third electrode (21) generating a vertical electric field in the liquid crystal layer together with the first electrode and the second electrode. Each pixel exhibits, in a switched manner, a black display state where black display is provided in a state where the vertical electric field is generated in the liquid crystal layer, a white display state where white display is provided in a state where the lateral electric field is generated in the liquid crystal layer, and a transparent display state where a rear side of a liquid crystal display panel (1) is seen through in a state where no voltage is applied to the liquid crystal layer.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: September 4, 2018
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takahiro Sasaki, Iori Aoyama, Yuichi Kita, Kazutaka Hanaoka
  • Patent number: 10001681
    Abstract: Pixels of a liquid crystal display device exhibit, in a switched manner, a black display state where black display is provided in a state where a vertical electric field is generated in a liquid crystal layer, a white display state where white display is provided in a state where a lateral electric field is generated in the liquid crystal layer, and a transparent display state where a rear side of a liquid crystal display panel is seen through where no voltage is applied to the liquid crystal layer. A gray scale level group including gray scale levels from a lowest level to a highest level includes a white level, a transparent level having a luminance higher than that of the white level, and a plurality of sub-transparent levels each having a luminance higher than that of the white level and lower than that of the transparent level.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: June 19, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yuichi Kita, Iori Aoyama, Takahiro Sasaki, Kazutaka Hanaoka
  • Publication number: 20180144695
    Abstract: A liquid crystal display device performs displaying by field sequential driving. The liquid crystal display device includes a plurality of scanning lines; and a plurality of signal lines including a plurality of pairs of signal lines, each pair of signal line being connected to one pixel column. Under field sequential driving, within one field period of emitting any of a plurality of color rays, there is an overlap between: a first period in which a first scanning line group included among the plurality of scanning lines are scanned and one of the pair of signal lines is used to perform signal writes; and a second period in which a second scanning line group included among the plurality of scanning lines are scanned, and another one of the pair of signal lines is used to perform signal writes.
    Type: Application
    Filed: April 18, 2016
    Publication date: May 24, 2018
    Inventors: YUICHI KITA, TAKAHIRO SASAKI, IORI AOYAMA, KAZUTAKA HANAOKA
  • Publication number: 20180095311
    Abstract: A liquid crystal display device (100) includes a liquid crystal display panel (1) and an illumination element (2), and is capable of switching between: a first mode of displaying in which displaying is performed by using a plurality of color rays emitted from the illumination element; and a second mode of displaying in which the background is allowed to be perceived, with no color rays being emitted from the illumination element.
    Type: Application
    Filed: April 11, 2016
    Publication date: April 5, 2018
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: TAKAHIRO SASAKI, IORI AOYAMA, YUICHI KITA, KAZUTAKA HANAOKA, HIDEFUMI YOSHIDA
  • Publication number: 20170285422
    Abstract: A first substrate (10) in a liquid crystal display device (100) includes a first electrode (11) provided in each pixel and a second electrode (12) generating a lateral electric field in a liquid crystal layer (30) together with the first electrode. A second substrate (20) includes a third electrode (21) generating a vertical electric field in the liquid crystal layer together with the first electrode and the second electrode. Each pixel exhibits, in a switched manner, a black display state where black display is provided in a state where the vertical electric field is generated in the liquid crystal layer, a white display state where white display is provided in a state where the lateral electric field is generated in the liquid crystal layer, and a transparent display state where a rear side of a liquid crystal display panel (1) is seen through in a state where no voltage is applied to the liquid crystal layer.
    Type: Application
    Filed: August 20, 2015
    Publication date: October 5, 2017
    Inventors: Iori AOYAMA, Takahiro SASAKI, Yuichi KITA, Kazutaka HANAOKA
  • Publication number: 20170285377
    Abstract: A first substrate (10) in a liquid crystal display device (100) includes a first electrode (11) provided in each pixel and a second electrode (12) generating a lateral electric field in a liquid crystal layer (30) together with the first electrode. A second substrate (20) includes a third electrode (21) generating a vertical electric field in the liquid crystal layer together with the first electrode and the second electrode. Each pixel exhibits, in a switched manner, a black display state where black display is provided in a state where the vertical electric field is generated in the liquid crystal layer, a white display state where white display is provided in a state where the lateral electric field is generated in the liquid crystal layer, and a transparent display state where a rear side of a liquid crystal display panel (1) is seen through in a state where no voltage is applied to the liquid crystal layer.
    Type: Application
    Filed: August 21, 2015
    Publication date: October 5, 2017
    Inventors: Takahiro SASAKI, Iori AOYAMA, Yuichi KITA, Kazutaka HANAOKA
  • Publication number: 20170285423
    Abstract: Each of pixels of a liquid crystal display device (100) exhibits, in a switched manner, a black display state where black display is provided in a state where a vertical electric field is generated in a liquid crystal layer (30), a white display state where white display is provided in a state where a lateral electric field is generated in the liquid crystal layer, and a transparent display state where a rear side of a liquid crystal display panel (1) is seen through in a state where no voltage is applied to the liquid crystal layer. A gray scale level group including gray scale levels from a lowest level to a highest level includes a white level corresponding to the white display state, a transparent level corresponding to the transparent display state and having a luminance higher than that of the white level, and a plurality of sub-transparent levels each having a luminance higher than that of the white level and lower than that of the transparent level.
    Type: Application
    Filed: August 25, 2015
    Publication date: October 5, 2017
    Inventors: Yuichi KITA, Iori AOYAMA, Takahiro SASAKI, Kazutaka HANAOKA
  • Patent number: 9658491
    Abstract: An optical device (100) includes a first substrate (10) and a second substrate (20), and an optical layer (30) interposed therebetween. The first substrate includes a first electrode (11) and a second electrode (12), to which respectively different potentials can be applied. The optical layer (30) contains a medium (31P) and anisotropically-shaped particles (32) whose alignment direction changes in accordance with the direction of an electric field applied to the optical layer. The medium is a liquid crystal material. When no electric field is applied to the optical layer, the anisotropically-shaped particles are aligned substantially vertically with respect to the substrate plane.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: May 23, 2017
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hiroyuki Moriwaki, Kazutaka Hanaoka
  • Publication number: 20170115527
    Abstract: A liquid crystal display device (100) includes a first liquid crystal display panel (1) configured to be capable of taking a transparent displaying state and a second liquid crystal display panel (2), such that the first liquid crystal display panel allows at least a portion of light going out of the second liquid crystal display panel to be transmitted in the transparent displaying state.
    Type: Application
    Filed: June 12, 2015
    Publication date: April 27, 2017
    Inventors: Yuichi KITA, Yoshiki NAKATANI, Takahiro SASAKI, Iori AOYAMA, Kazutaka HANAOKA
  • Publication number: 20170097548
    Abstract: A liquid crystal display device (100) includes a liquid crystal display panel (1) including a first substrate (10), a second substrate (20), and a liquid crystal layer (30). The first substrate includes a first electrode (11) provided for each pixel, and a second electrode (12) for generating a lateral field across the liquid crystal layer in cooperation with the first electrode. The second substrate includes a third electrode (21) for generating a vertical field across the liquid crystal layer in cooperation with the first electrode and the second electrode. Each pixel is capable of switchably presenting a black displaying state where a vertical field is generated across the liquid crystal layer, a white displaying state where a lateral field is generated across the liquid crystal layer, and a transparent displaying state where a rear face side of the liquid crystal display panel is visible in a see-through manner with no voltage being applied to the liquid crystal layer.
    Type: Application
    Filed: May 29, 2015
    Publication date: April 6, 2017
    Inventors: Iori AOYAMA, Yuichi KITA, Takahiro SASAKI, Yoshiki NAKATANI, Kazutaka HANAOKA
  • Patent number: 9612490
    Abstract: The present invention provides a liquid crystal display having the advantage of higher resolution and lower power consumption while having high transmittance. The present invention is a liquid crystal display provided with a first substrate, a second substrate and a horizontal orientation-type liquid crystal layer. The first substrate includes a plurality of source bus lines, a plurality of gate bus lines, a pixel electrode, a first common electrode, a first interlayer insulation film on the plurality of source bus lines, a first conductive layer on the first interlayer insulation film, a second interlayer insulation film on the first conductive layer and a second conductive layer on the second interlayer insulation film. The first common electrode includes a plurality of first linear portions having a linear shape. The pixel electrode includes one or more second linear portions. The plurality of first linear portions and one or more second linear portions are alternately disposed.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: April 4, 2017
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hiroyuki Moriwaki, Toshio Ninomiya, Kazutaka Hanaoka
  • Publication number: 20160327836
    Abstract: An optical device (100) includes: a first substrate (10) and a second substrate (20) opposing each other; an optical layer (30) interposed between the first substrate and the second substrate; and a first electrode (11) and a second electrode (12) to which different potentials can be applied. The optical layer includes a medium (31) and anisotropically-shaped particles (32) dispersed in the medium, the anisotropically-shaped particles having shape anisotropy. The alignment direction of the anisotropically-shaped particles changes depending on a voltage applied across the optical layer. The voltage applied across the optical layer is an oscillating voltage alternately including a first period in which an absolute value is relatively large and a second period in which an absolute value is relatively small.
    Type: Application
    Filed: August 29, 2014
    Publication date: November 10, 2016
    Inventors: Hiroyuki MORIWAKI, Masumi KUBO, Kazutaka HANAOKA
  • Publication number: 20160085096
    Abstract: An optical device (100) includes a first substrate (10) and a second substrate (20), and an optical layer (30) interposed therebetween. The first substrate includes a first electrode (11) and a second electrode (12), to which respectively different potentials can be applied. The optical layer (30) contains a medium (31P) and anisotropically-shaped particles (32) whose alignment direction changes in accordance with the direction of an electric field applied to the optical layer. The medium is a liquid crystal material. When no electric field is applied to the optical layer, the anisotropically-shaped particles are aligned substantially vertically with respect to the substrate plane.
    Type: Application
    Filed: February 27, 2014
    Publication date: March 24, 2016
    Inventors: Hiroyuki MORIWAKI, Kazutaka HANAOKA