Patents by Inventor Tadashi Ohtake

Tadashi Ohtake 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: 20190292307
    Abstract: A seal material composition according to the present invention includes: an epoxy compound including an epoxy group; and a polymerizable epoxy curing agent including a polymerizable functional group configured for cross-linking the epoxy groups and for radical polymerization in a single molecule.
    Type: Application
    Filed: October 20, 2017
    Publication date: September 26, 2019
    Inventors: Masanobu MIZUSAKI, Tadashi OHTAKE
  • Patent number: 10372009
    Abstract: The optical device (100) includes a first substrate (10), a second substrate (20), and an optical layer (30). The first substrate includes a first electrode (11) and a second electrode (12) configured to be provided with mutually different electrical potentials within a pixel. The optical layer may include a medium (31) and a plurality of shape-anisotropic particles (32) dispersed in the medium. At least one of the first electrode and the second electrode may include a plurality of comb teeth portions (11a, 12a) arranged at predetermined intervals along the first direction (D1). When an electric potential difference is applied between the first electrode and the second electrode, the pixel may be configured to have an electrical field distribution in which a strong electric field region having a stronger field intensity than another region is periodically formed parallel to the surface of the optical layer along a second direction (D2) orthogonal to the first direction.
    Type: Grant
    Filed: August 9, 2016
    Date of Patent: August 6, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tomoko Teranishi, Hiroyuki Moriwaki, Eiji Satoh, Tadashi Ohtake, Hidefumi Yoshida, Satoshi Matsumura
  • Publication number: 20190194494
    Abstract: To provide a sealant composition with which a decrease in voltage holding rate is less likely to occur in a liquid crystal cell for a scanning antenna, the sealant composition according to the present invention includes a photo-radical polymerization initiator that generates a radical through application of light with a wavelength of 450 nm or greater and a polymerization component that contains a polymerizable functional group that is polymerizable using the radical.
    Type: Application
    Filed: August 18, 2017
    Publication date: June 27, 2019
    Inventors: MASANOBU MIZUSAKI, TADASHI OHTAKE
  • Publication number: 20190190162
    Abstract: Disclosed is a liquid crystal panel of a scanning antenna including a transmission and/or reception region in which a plurality of antenna units are arrayed, and a non-transmission and/or reception region, the liquid crystal panel including: a TFT substrate provided with a first dielectric substrate, a TFT supported by the first dielectric substrate, a gate bus line, a source bus line, and a patch electrode; a slot substrate provided with a second dielectric substrate, and a slot electrode formed on a first main surface of the second dielectric substrate and including a slot arranged so as to correspond to the patch electrode; a liquid crystal layer provided between the TFT substrate and the slot substrate and including a plurality of liquid crystal regions; and a plurality of sealing portions that respectively surround the plurality of liquid crystal regions and bond the TFT substrate and the slot substrate together.
    Type: Application
    Filed: August 3, 2017
    Publication date: June 20, 2019
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: TADASHI OHTAKE, TAKATOSHI ORUI, WATARU NAKAMURA, KIYOSHI MINOURA, MASANOBU MIZUSAKI
  • Publication number: 20190148838
    Abstract: A scanning antenna includes a TFT substrate including a first dielectric substrate, TFTs supported by the first dielectric substrate, gate bus lines, source bus lines, and patch electrodes; a slot substrate including a second dielectric substrate, and a slot electrode formed on a first main surface of the second dielectric substrate; a liquid crystal layer provided between the TFT substrate and the slot substrate; and a reflective conduction plate facing a second main surface of the second dielectric substrate—on a side opposite the first main surface with a dielectric layer therebetween. The slot electrode includes slots disposed corresponding to the patch electrodes, and each of the patch electrodes is connected to the drain of a corresponding TFT.
    Type: Application
    Filed: May 19, 2017
    Publication date: May 16, 2019
    Applicants: SHARP KABUSHIKI KAISHA, SHARP KABUSHIKI KAISHA
    Inventors: TADASHI OHTAKE, KIYOSHI MINOURA, MAKOTO NAKAZAWA, TAKATOSHI ORUI, WATARU NAKAMURA
  • Patent number: 10197856
    Abstract: The present invention provides an optical modulator that prevents aggregation of shape-anisotropic particles. The optical modulator of the present invention includes: (1) a first substrate and a second substrate that are disposed to face each other; (2) an optical modulation layer disposed between the first substrate and the second substrate; and (3) a vertical alignment film. The optical modulation layer (2) contains: (2A) liquid crystal molecules that have a positive anisotropy of dielectric constant with a value of the anisotropy ?? of 10 or more; and (2B) shape-anisotropic particles each including a core material and a coating layer that is formed of a material containing a fluorine atom and constitutes an outer surface of the shape-anisotropic particles. The first substrate includes a pair of electrodes.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: February 5, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tadashi Ohtake, Tomoko Teranishi, Hiroyuki Moriwaki, Eiji Satoh, Hao Li
  • Patent number: 10177444
    Abstract: A scanned antenna (1000) is a scanned antenna including antenna elements (U) arranged together, the scanned antenna including: a TFT substrate (101) including a first dielectric substrate (1), TFTs, gate bus lines, source bus lines, and patch electrodes (15); a slot substrate (201) including a second dielectric substrate (51) a slot electrode (55); a liquid crystal layer (LC) provided between the TFT substrate and the slot substrate; and a reflective conductive plate (65). The slot electrode includes slots (57) arranged so as to correspond to the patch electrodes. As seen from the normal direction to the first dielectric substrate, a plurality of spacer structures (75) provided between the TFT substrate and the slot substrate are arranged so as not to overlap with first regions (Rp1) and/or second regions (Rp2), where the first regions are regions that are within a distance of 0.3 mm from edges of the slots and the second regions are regions that are within a distance of 0.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: January 8, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Makoto Nakazawa, Takatoshi Orui, Wataru Nakamura, Tadashi Ohtake, Fumiki Nakano, Kiyoshi Minoura
  • Publication number: 20190006746
    Abstract: A scanning antenna (1000) in which a plurality of antenna units (U) are arranged, the scanning antenna including: a TFT substrate (101) including a first dielectric substrate (1), TFTs, gate bus lines, source bus lines, and patch electrodes (15); a slot substrate (201) including a second dielectric substrate (51) and a slot electrode (55) formed on a first main surface of the second dielectric substrate; a liquid crystal layer (LC) provided between the TFT substrate and the slot substrate; and a reflective conductive plate (65) disposed opposing via a dielectric layer (54) a second main surface opposite to the first main surface of the second dielectric substrate, (51) wherein the slot electrode includes slots disposed corresponding to the respective patch electrodes, and a heater part (68) is further provided on the outside of the TFT substrate (101) or on the outside of the slot substrate (201).
    Type: Application
    Filed: October 17, 2016
    Publication date: January 3, 2019
    Inventors: TADASHI OHTAKE, KIYOSHI MINOURA, MAKOTO NAKAZAWA, TAKATOSHI ORUI, WATARU NAKAMURA, FUMIKI NAKANO
  • Publication number: 20180239211
    Abstract: The optical device (100) includes a first substrate (10), a second substrate (20), and an optical layer (30). The first substrate includes a first electrode (11) and a second electrode (12) configured to be provided with mutually different electrical potentials within a pixel. The optical layer may include a medium (31) and a plurality of shape-anisotropic particles (32) dispersed in the medium. At least one of the first electrode and the second electrode may include a plurality of comb teeth portions (11a, 12a) arranged at predetermined intervals along the first direction (D1). When an electric potential difference is applied between the first electrode and the second electrode, the pixel may be configured to have an electrical field distribution in which a strong electric field region having a stronger field intensity than another region is periodically formed parallel to the surface of the optical layer along a second direction (D2) orthogonal to the first direction.
    Type: Application
    Filed: August 9, 2016
    Publication date: August 23, 2018
    Inventors: TOMOKO TERANISHI, HIROYUKI MORIWAKI, EIJI SATOH, TADASHI OHTAKE, HIDEFUMI YOSHIDA, SATOSHI MATSUMURA
  • Publication number: 20180138593
    Abstract: A scanned antenna (1000) is a scanned antenna including antenna elements (U) arranged together, the scanned antenna including: a TFT substrate (101) including a first dielectric substrate (1), TFTs, gate bus lines, source bus lines, and patch electrodes (15); a slot substrate (201) including a second dielectric substrate (51) a slot electrode (55); a liquid crystal layer (LC) provided between the TFT substrate and the slot substrate; and a reflective conductive plate (65). The slot electrode includes slots (57) arranged so as to correspond to the patch electrodes. As seen from the normal direction to the first dielectric substrate, a plurality of spacer structures (75) provided between the TFT substrate and the slot substrate are arranged so as not to overlap with first regions (Rp1) and/or second regions (Rp2), where the first regions are regions that are within a distance of 0.3 mm from edges of the slots and the second regions are regions that are within a distance of 0.
    Type: Application
    Filed: October 25, 2016
    Publication date: May 17, 2018
    Inventors: Makoto NAKAZAWA, Takatoshi ORUI, Wataru NAKAMURA, Tadashi OHTAKE, Fumiki NAKANO, Kiyoshi MINOURA
  • Publication number: 20180129086
    Abstract: The present invention provides an optical modulator that prevents aggregation of shape-anisotropic particles. The optical modulator of the present invention includes: (1) a first substrate and a second substrate that are disposed to face each other; (2) an optical modulation layer disposed between the first substrate and the second substrate; and (3) a vertical alignment film. The optical modulation layer (2) contains: (2A) liquid crystal molecules that have a positive anisotropy of dielectric constant with a value of the anisotropy ?? of 10 or more; and (2B) shape-anisotropic particles each including a core material and a coating layer that is formed of a material containing a fluorine atom and constitutes an outer surface of the shape-anisotropic particles. The first substrate includes a pair of electrodes.
    Type: Application
    Filed: March 28, 2016
    Publication date: May 10, 2018
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Tadashi OHTAKE, Tomoko TERANISHI, Hiroyuki MORIWAKI, Eiji SATOH, Hao LI
  • Publication number: 20160187739
    Abstract: A liquid crystal display device includes: a first substrate; a second substrate facing the first substrate; and a liquid crystal layer sandwiched between the first substrate and the second substrate. The first substrate has thereon a first planar electrode, a first dielectric layer on the first planar electrode, and a pair of comb-shaped electrodes on the first dielectric layer. The second substrate has thereon a second planar electrode and a second dielectric layer on the second planar electrode. The liquid crystal layer includes liquid crystal molecules having a positive dielectric anisotropy. The liquid crystal display device is configured such that, when displaying a minimum gradation, a same voltage is applied to the pair of comb-shaped electrodes, and a relationship among voltages applied to the first planar electrode, the pair of comb-shaped electrodes, and the second planar electrode satisfies a prescribed relational expression.
    Type: Application
    Filed: July 24, 2014
    Publication date: June 30, 2016
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Yosuke IWATA, Mitsuhiro MURATA, Kouhei TANAKA, Tadashi OHTAKE, Ryo YONEBAYASHI
  • Patent number: 9007284
    Abstract: Picture element electrodes (30) and common electrodes (36) are provided in one of two substrates facing each other. Each picture element (20) has a plurality of sub picture elements (22). In a range in which a signal voltage of an image signal is low, a display is carried out only in a first sub picture element (22a) having narrower electrode spacing, whereas in a range in which the signal voltage of the image signal is high, a display is carried out in both of the first sub picture element (22a) and a second sub picture element (22b) having wider electrode spacing.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: April 14, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takehisa Sakurai, Shuichi Kozaki, Shoichi Ishihara, Masako Nakamura, Mitsuhiro Murata, Tadashi Ohtake
  • Patent number: 8958037
    Abstract: An vertical alignment type liquid crystal display element (10) which controls an orientation of liquid crystal molecules (52) in a liquid crystal layer (50) by use of a transverse electric field so as to carry out display. A CF-side first insulating layer (42a) and a CF-side second insulting layer (42b) which have respective different dielectric constants are provided, within a pixel in a planar view, on or above a CF substrate (24) so that a first electric field region (60) and a second electric field region (62) which differ in shapes of equipotential lines are formed in the pixel due to generation of a transverse electric field.
    Type: Grant
    Filed: March 8, 2010
    Date of Patent: February 17, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Mitsuhiro Murata, Shoichi Ishihara, Takehisa Sakurai, Shuichi Kozaki, Tadashi Ohtake
  • Patent number: 8947624
    Abstract: A vertical alignment liquid crystal panel based on a transverse electric field drive system is provided which shows few changes in color when looked squarely at. A liquid crystal panel (2) is a vertical alignment liquid crystal panel based on a transverse electric field drive system, which carries out a display by driving, with a transverse electric field, a liquid crystal layer (50) sandwiched between substrates (10, 20), and the substrate (10) is provided with an insulating layer (25) having at least two regions that are different in relative permittivity from each other in a pixel (6) composed of a red subpixel (6R), a green subpixel (6G), and a blue subpixel (6B). Those regions of the insulating layer (25) which correspond to the blue, green, and red subpixel (6B, 6G, 6R) in the liquid crystal panel (2) have relative permittivities of 3, 3 to 7, and 4 to 7, respectively.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: February 3, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Mitsuhiro Murata, Shuichi Kozaki, Shoichi Ishihara, Takehisa Sakurai, Tadashi Ohtake
  • Publication number: 20150024209
    Abstract: According to the present invention, a solvent having particles with a primary particle diameter of less than 100 nm to which a surface modification agent is bonded and also having compounds not bonded to the respective surfaces of the particles is made to contact a trap material larger than the particles while the solvent is in a supercritical state. The compounds in the solvent not bonded to the respective surfaces of the particles are trapped by the trap material and removed.
    Type: Application
    Filed: February 26, 2013
    Publication date: January 22, 2015
    Applicant: Sharp Kabushiki Kaisha
    Inventor: Tadashi Ohtake
  • Patent number: 8934075
    Abstract: The present invention provides a liquid crystal display device that can suppress a display defect due to collapse of liquid crystal alignment. The present invention provides a liquid crystal display device comprising a liquid crystal display element including a pair of substrates and a liquid crystal layer hermetically interposed between the pair of substrates, wherein the liquid crystal layer includes a p-type liquid crystal material that is homeotropically aligned with respect to surfaces of the pair of substrates when no voltage is applied; one of the pair of substrates comprises a comb-shaped electrode and a first alignment layer configured to control alignment of the p-type liquid crystal material; the other of the pair of substrates comprises a second alignment layer configured to control alignment of the p-type liquid crystal material; and the first alignment layer has an anchoring energy of not greater than 1.5×10?4 J/m2.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: January 13, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shoichi Ishihara, Takehisa Sakurai, Mitsuhiro Murata, Shuichi Kozaki, Tadashi Ohtake
  • Patent number: 8669973
    Abstract: A liquid crystal display element, a liquid crystal display device, and a method for displaying with a liquid crystal display element, wherein picture element electrodes (30) and a common electrode (36) are provided, each of a plurality of sub-picture elements (22) is provided with the common electrode (36) and a corresponding one of the picture element electrodes (30) in such a manner that the sub-picture elements (22) have different distances (a first distance d1 and a second distance d2) between the common electrode (36) and their corresponding ones of the picture element electrodes (30), display in a low gray scale region is carried out by means of a first sub-picture element (22a) that is a sub-picture element (22) in which the distance is short, display in a middle gray scale region is carried out by means of a second sub-picture element (22b) that is a sub-picture element (22) in which the distance is long, and display in a high gray scale region is carried out by means of the first sub-picture element
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: March 11, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takehisa Sakurai, Shuichi Kozaki, Shoichi Ishihara, Masako Nakamura, Mitsuhiro Murata, Tadashi Ohtake
  • Patent number: 8654290
    Abstract: A liquid crystal display device (1) includes a first substrate (2), a second substrate (3) provided to face the first substrate (2), a liquid crystal layer (4) sandwiched between the first substrate (2) and the second substrate (3), a first polarizing plate (5) and a second polarizing plate (6) respectively provided on a side of the first substrate (2) and a side of the second substrate (3) which are opposed to sides to which the liquid crystal layer (4) is provided, and a common electrode (7) and a pixel electrode (9) provided to the liquid crystal layer (4) side of the first substrate (2). Alignment of liquid crystal molecules (4a) of the liquid crystal layer (4) is controlled by an electric field generated between the common electrode (7) and the pixel electrode (9). A polarizing layer (13) is provided on the liquid crystal layer (4) side of the second substrate (3) so as to be in contact with the liquid crystal layer (4).
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: February 18, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masanobu Mizusaki, Tadashi Ohtake, Takashi Katayama, Masako Nakamura
  • Patent number: 8284359
    Abstract: A liquid crystal panel (2) includes a pair of substrates (10, 20) and a liquid crystal layer (30) sandwiched between the substrates (10, 20). At least one of the substrate (10, 20) is provided with combtooth electrodes (12, 13). The liquid crystal layer (30) is driven by a transverse electric field generated between the combtooth electrodes (12, 13). The liquid crystal layer (30) contains liquid crystal molecules (31) that align themselves perpendicularly to surfaces of the substrates when no electric field is applied. The liquid crystal panel 2 satisfies 0.33?S/(S+L)?0.64, where L is the width of each of the combtooth electrodes (12, 13) and S is the electrode interval.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: October 9, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Mitsuhiro Murata, Shoichi Ishihara, Shuichi Kozaki, Takehisa Sakurai, Tadashi Ohtake, Masako Nakamura