Patents by Inventor Takuma Tomotoshi

Takuma Tomotoshi 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: 10948787
    Abstract: A liquid crystal display device of the present invention includes, in the given order: a first substrate; a liquid crystal layer containing liquid crystal molecules; and a second substrate. The first substrate includes a first electrode, a second electrode closer to the liquid crystal layer than the first electrode is, and an insulating film between the first electrode and the second electrode. The second electrode is provided with openings including a first opening and a second opening adjacent to each other. The first opening and the second opening are independent of each other and are point-symmetrical to each other. The first opening and the second opening each have a shape including: curved portions that expand an opening periphery outward at the respective ends in the longitudinal direction; and paired protruding portions that allow the opening periphery to protrude partially in the lateral direction in the middle of the longitudinal direction.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: March 16, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Mitsuhiro Murata, Yosuke Iwata, Takuma Tomotoshi
  • Patent number: 10802345
    Abstract: Disclosed is a horizontal alignment mode liquid crystal display device that can achieve higher definition and improved response speed. The liquid crystal display device includes, in the given order: a first substrate; a liquid crystal layer containing liquid crystal molecules; and a second substrate. The first substrate includes a first electrode, a second electrode positioned closer to the liquid crystal layer than the first electrode is, and an insulating film between the first and second electrodes. The second electrode is provided with an opening having a shape including a longitudinal-shaped portion and a pair of protrusions protruding to opposite sides from the longitudinal-shaped portion. The protrusions are provided at portions excluding both end portions in the longitudinal direction of the longitudinal-shaped portion and are located at corresponding positions.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: October 13, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Mitsuhiro Murata, Yosuke Iwata, Takuma Tomotoshi
  • Patent number: 10754207
    Abstract: A liquid crystal display device includes an upper substrate and a lower substrate; and a liquid crystal layer sandwiched between the upper and lower substrates. The lower substrate includes a pixel electrode, a first auxiliary capacitance electrode, and a second auxiliary capacitance electrode for one pixel, and one or two auxiliary capacitance lines for one pixel line including pixels. The two auxiliary capacitive electrodes are electrically connected to different auxiliary capacitance lines. Each of the first auxiliary capacitance electrode and the second auxiliary capacitance electrode and the pixel electrode overlap each other in a plan view. The first auxiliary capacitance electrode and the second auxiliary capacitance electrode differ from each other in shape in a display region of each of the pixels. The shape of the first auxiliary capacitance electrode in a first pixel is identical to the shape of the second auxiliary capacitance electrode in a second pixel adjacent to the first pixel.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: August 25, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yosuke Iwata, Mitsuhiro Murata, Takuma Tomotoshi, Satoshi Matsumura
  • Publication number: 20200184909
    Abstract: The liquid crystal display device according to the present invention includes a first substrate, a second substrate, a liquid crystal layer, and a display region including multiple display units arranged in a matrix. The first substrate includes a first electrode, and a second electrode. Liquid crystal molecules are aligned parallel to the first substrate in a no-voltage-applied state. The second electrode in each of the display units is provided with an opening having a certain shape. The display units include at least one high-speed display unit in which four liquid crystal domains are generated in the light-transmitting region in a voltage-applied state and at least one high-luminance display unit in which two liquid crystal domains are generated in the light-transmitting region in the voltage-applied state. A data signal is written in the at least one high-speed display unit later than in the high-luminance display unit within one frame period.
    Type: Application
    Filed: September 22, 2017
    Publication date: June 11, 2020
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Mitsuhiro MURATA, Takuma TOMOTOSHI, Yosuke IWATA
  • Patent number: 10663804
    Abstract: A liquid crystal display device includes, in the given order: a first substrate; a liquid crystal layer containing liquid crystal molecules; and a second substrate; wherein the first substrate includes a first electrode, a second electrode positioned closer to the liquid crystal layer than the first electrode is, and an insulating film between the first electrode and the second electrode, the second electrode has an opening having a shape including an elliptical portion and/or a circular portion, in a no-voltage-applied state, where no voltage is applied between the first electrode and the second electrode, the liquid crystal molecules are aligned parallel to the first substrate, and in a plan view, the major axis of the elliptical portion is parallel or perpendicular to the alignment azimuth of the liquid crystal molecules in the no-voltage-applied state.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: May 26, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Mitsuhiro Murata, Yosuke Iwata, Takuma Tomotoshi, Satoshi Matsumura
  • Patent number: 10634960
    Abstract: A liquid crystal display device including an upper substrate and a lower substrate; and a liquid crystal layer sandwiched between the upper and lower substrates, wherein the lower substrate includes a first electrode and a second electrode and a third electrode arranged in a layer different from the first electrode, the first electrode has multiple linear portions and an opening is provided between the linear portions, the second electrode and the third electrode are a pair of comb-shaped electrodes, each of the comb-shaped electrodes has a trunk portion and multiple branch portions branching from the trunk portion, at least one of the branch portions of the third electrode has a narrow portion which is narrowest and a projection portion which is wider than the narrow portion, one of angles on the upper side and on the opening side formed by a contour line of the opening on each of the left and right sides of the projection portion and the narrow portion of the branch portion of the third electrode in the ope
    Type: Grant
    Filed: July 3, 2017
    Date of Patent: April 28, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Satoshi Matsumura, Mitsuhiro Murata, Takuma Tomotoshi, Yosuke Iwata
  • Patent number: 10558085
    Abstract: The present invention provides a liquid crystal display device capable of achieving a high contrast ratio, a wide viewing angle, and a high-speed response. The liquid crystal display device includes an upper substrate; a lower substrate; and a liquid crystal layer sandwiched between the upper substrate and the lower substrate. The lower substrate includes a first electrode, and a second electrode and a third electrode arranged in a layer different from the first electrode. The first electrode includes a trunk portion and multiple branch portions branching from the trunk portion and is provided with an opening between the branch portions. The second electrode and the third electrode constitute a pair of comb-shaped electrodes and each include a trunk portion and multiple branch portions branching from the trunk portion. The branch portions of the first electrode are each bent at a predetermined angle. The electrodes each have a predetermined configuration.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: February 11, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takuma Tomotoshi, Mitsuhiro Murata, Yosuke Iwata, Satoshi Matsumura
  • Publication number: 20190310525
    Abstract: A liquid crystal display device including an upper substrate and a lower substrate; and a liquid crystal layer sandwiched between the upper and lower substrates, wherein the lower substrate includes a first electrode and a second electrode and a third electrode arranged in a layer different from the first electrode, the first electrode has multiple linear portions and an opening is provided between the linear portions, the second electrode and the third electrode are a pair of comb-shaped electrodes, each of the comb-shaped electrodes has a trunk portion and multiple branch portions branching from the trunk portion, at least one of the branch portions of the third electrode has a narrow portion which is narrowest and a projection portion which is wider than the narrow portion, one of angles on the upper side and on the opening side formed by a contour line of the opening on each of the left and right sides of the projection portion and the narrow portion of the branch portion of the third electrode in the ope
    Type: Application
    Filed: July 3, 2017
    Publication date: October 10, 2019
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: SATOSHI MATSUMURA, MITSUHIRO MURATA, TAKUMA TOMOTOSHI, YOSUKE IWATA
  • Publication number: 20190212615
    Abstract: The present invention provides a liquid crystal display device capable of achieving a high contrast ratio, a wide viewing angle, and a high-speed response. The liquid crystal display device includes an upper substrate; a lower substrate; and a liquid crystal layer sandwiched between the upper substrate and the lower substrate. The lower substrate includes a first electrode, and a second electrode and a third electrode arranged in a layer different from the first electrode. The first electrode includes a trunk portion and multiple branch portions branching from the trunk portion and is provided with an opening between the branch portions. The second electrode and the third electrode constitute a pair of comb-shaped electrodes and each include a trunk portion and multiple branch portions branching from the trunk portion. The branch portions of the first electrode are each bent at a predetermined angle. The electrodes each have a predetermined configuration.
    Type: Application
    Filed: July 5, 2017
    Publication date: July 11, 2019
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: TAKUMA TOMOTOSHI, MITSUHIRO MURATA, YOSUKE IWATA, SATOSHI MATSUMURA
  • Publication number: 20190121208
    Abstract: A liquid crystal display device includes an upper substrate and a lower substrate; and a liquid crystal layer sandwiched between the upper and lower substrates. The lower substrate includes a pixel electrode, a first auxiliary capacitance electrode, and a second auxiliary capacitance electrode for one pixel, and one or two auxiliary capacitance lines for one pixel line including pixels. The two auxiliary capacitive electrodes are electrically connected to different auxiliary capacitance lines. Each of the first auxiliary capacitance electrode and the second auxiliary capacitance electrode and the pixel electrode overlap each other in a plan view. The first auxiliary capacitance electrode and the second auxiliary capacitance electrode differ from each other in shape in a display region of each of the pixels. The shape of the first auxiliary capacitance electrode in a first pixel is identical to the shape of the second auxiliary capacitance electrode in a second pixel adjacent to the first pixel.
    Type: Application
    Filed: March 23, 2017
    Publication date: April 25, 2019
    Inventors: YOSUKE IWATA, MITSUHIRO MURATA, TAKUMA TOMOTOSHI, SATOSHI MATSUMURA
  • Publication number: 20190113784
    Abstract: The present invention provides a horizontal alignment mode liquid crystal display device capable of achieving high resolution and improving transmittance.
    Type: Application
    Filed: March 21, 2017
    Publication date: April 18, 2019
    Inventors: YOSUKE IWATA, MITSUHIRO MURATA, TAKUMA TOMOTOSHI
  • Publication number: 20190113811
    Abstract: The present invention provides a horizontal alignment mode liquid crystal display device capable of achieving high resolution, high speed response, and high transmittance. The liquid crystal display device of present invention sequentially includes a first substrate, a liquid crystal layer containing liquid crystal molecules, and a second substrate. The first substrate includes a first electrode, a second electrode provided closer to the liquid crystal layer than the first electrode is, and an insulating film provided between the first electrode and the second electrode. An opening portion (15) is formed in the second electrode in each of a plurality of units of display (50) arrayed in a matrix pattern. The liquid crystal molecules are aligned parallel to the first substrate in a voltage non-applied state in which no voltage is applied between the first electrode and the second electrode.
    Type: Application
    Filed: March 22, 2017
    Publication date: April 18, 2019
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: YOSUKE IWATA, MITSUHIRO MURATA, TAKUMA TOMOTOSHI, HIDEFUMI YOSHIDA
  • Publication number: 20190113785
    Abstract: The present invention provides a horizontal alignment-mode liquid crystal display device enabling higher definition, more rapid response, and a higher transmission. The liquid crystal display device of the present invention includes, in the given order: a first substrate; a liquid crystal layer containing liquid crystal molecules; and a second substrate. The first substrate includes a first electrode, a second electrode closer to the liquid crystal layer than the first electrode is, and an insulating film between the first electrode and the second electrode. The second electrode is provided with an opening having a longitudinal shape with no protruding portion. The liquid crystal molecules are aligned parallel to the first substrate in a no-voltage-applied state where no voltage is applied between the first electrode and the second electrode. The liquid crystal molecules have negative anisotropy of dielectric constant.
    Type: Application
    Filed: March 22, 2017
    Publication date: April 18, 2019
    Inventors: TAKUMA TOMOTOSHI, MITSUHIRO MURATA, YOSUKE IWATA
  • Publication number: 20190107759
    Abstract: A liquid crystal display device includes, in the given order: a first substrate; a liquid crystal layer containing liquid crystal molecules; and a second substrate; wherein the first substrate includes a first electrode, a second electrode positioned closer to the liquid crystal layer than the first electrode is, and an insulating film between the first electrode and the second electrode, the second electrode has an opening having a shape including an elliptical portion and/or a circular portion, in a no-voltage-applied state, where no voltage is applied between the first electrode and the second electrode, the liquid crystal molecules are aligned parallel to the first substrate, and in a plan view, the major axis of the elliptical portion is parallel or perpendicular to the alignment azimuth of the liquid crystal molecules in the no-voltage-applied state.
    Type: Application
    Filed: September 20, 2016
    Publication date: April 11, 2019
    Inventors: MITSUHIRO MURATA, YOSUKE IWATA, TAKUMA TOMOTOSHI, SATOSHI MATSUMURA
  • Publication number: 20190094580
    Abstract: Disclosed is a horizontal alignment mode liquid crystal display device that can achieve higher definition and improved response speed. The liquid crystal display device includes, in the given order: a first substrate; a liquid crystal layer containing liquid crystal molecules; and a second substrate. The first substrate includes a first electrode, a second electrode positioned closer to the liquid crystal layer than the first electrode is, and an insulating film between the first and second electrodes. The second electrode is provided with an opening having a shape including a longitudinal-shaped portion and a pair of protrusions protruding to opposite sides from the longitudinal-shaped portion. The protrusions are provided at portions excluding both end portions in the longitudinal direction of the longitudinal-shaped portion and are located at corresponding positions.
    Type: Application
    Filed: February 21, 2017
    Publication date: March 28, 2019
    Inventors: MITSUHIRO MURATA, YOSUKE IWATA, TAKUMA TOMOTOSHI
  • Publication number: 20190086744
    Abstract: A liquid crystal display device of the present invention includes, in the given order: a first substrate; a liquid crystal layer containing liquid crystal molecules; and a second substrate. The first substrate includes a first electrode, a second electrode closer to the liquid crystal layer than the first electrode is, and an insulating film between the first electrode and the second electrode. The second electrode is provided with openings including a first opening and a second opening adjacent to each other. The first opening and the second opening are independent of each other and are point-symmetrical to each other. The first opening and the second opening each have a shape including: curved portions that expand an opening periphery outward at the respective ends in the longitudinal direction; and paired protruding portions that allow the opening periphery to protrude partially in the lateral direction in the middle of the longitudinal direction.
    Type: Application
    Filed: March 7, 2017
    Publication date: March 21, 2019
    Inventors: MITSUHIRO MURATA, YOSUKE IWATA, TAKUMA TOMOTOSHI
  • Patent number: 9507189
    Abstract: The present invention provides a display panel that exhibits increased light use efficiency and decreased occurrence of display anomalies. The display panel includes substrates; a light modulating layer that contains shape-anisotropic members that rotate according to the direction of an electric field and that controls the transmittance of incident light by changing the area projected onto the substrates by the shape-anisotropic members; and supporting members that support the shape-anisotropic members and are rotatably connected thereto.
    Type: Grant
    Filed: September 2, 2013
    Date of Patent: November 29, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Eiji Satoh, Takuma Tomotoshi, Tomoko Teranishi, Takahiro Nakahara
  • Publication number: 20160231637
    Abstract: An infrared dimming apparatus of the present invention includes an automatic control circuit that controls switching in a dimming cell between an infrared reflective state and an infrared transmissive state in accordance with a predetermined time schedule.
    Type: Application
    Filed: August 8, 2014
    Publication date: August 11, 2016
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Eiji SATOH, Kiyoshi MINOURA, Tomoko TERANISHI, Takuma TOMOTOSHI
  • Publication number: 20160116814
    Abstract: A modulation layer in a display device is made of a dispersion liquid including: a plurality of shape-anisotropic members that, by rotating or moving in accordance with changes in the magnitude of frequency of an applied voltage, change the area thereof projected onto substrates in a direction normal to the substrates; a dispersion medium; and a thickening agent. When shear stress applied to the dispersion liquid is high, the thickening agent reduces the viscosity of the dispersion liquid more than when shear stress is low.
    Type: Application
    Filed: February 27, 2014
    Publication date: April 28, 2016
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Tomoko TERANISHI, Eiji SATOH, Takuma TOMOTOSHI, Takahiro NAKAHARA
  • Patent number: 9134475
    Abstract: A front light (1) includes a light source (8), a light guide plate (9), and a plurality of dots (4) that are provided on a surface of the light guide plate (9), which surface faces a light exit surface of the light guide plate (9). Each of the plurality of dots (4) includes (i) a light reflective layer (2) for reflecting light toward the light guide plate (9), and (ii) a dark layer (3) for absorbing light, the dark layer completely covering the light reflective layer (2) so as to be in contact with the light guide plate (9) without any gap between the light guide plate (9) and the dark layer (3).
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: September 15, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hisashi Watanabe, Tomoko Teranishi, Toshiki Matsuoka, Takahiro Nakahara, Takuma Tomotoshi, Eiji Satoh, Kohzoh Nakamura, Yohzoh Narutaki