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).
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Patent number: 11384169Abstract: 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: GrantFiled: August 18, 2017Date of Patent: July 12, 2022Assignee: SHARP KABUSHIKI KAISHAInventors: Masanobu Mizusaki, Tadashi Ohtake
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Patent number: 11367965Abstract: 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: GrantFiled: August 3, 2017Date of Patent: June 21, 2022Assignee: SHARP KABUSHIKI KAISHAInventors: Tadashi Ohtake, Takatoshi Orui, Wataru Nakamura, Kiyoshi Minoura, Masanobu Mizusaki
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Patent number: 11078324Abstract: 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: GrantFiled: October 20, 2017Date of Patent: August 3, 2021Assignee: SHARP KABUSHIKI KAISHAInventors: Masanobu Mizusaki, Tadashi Ohtake
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Patent number: 11024960Abstract: A scanning antenna includes a TFT substrate including a plurality of TFTs supported by a first dielectric substrate and a plurality of patch electrodes, a slot substrate including a slot electrode supported by a second dielectric substrate, a liquid crystal layer provided between the TFT substrate and the slot substrate, and a reflective conductive plate disposed opposing the second dielectric substrate across a dielectric layer. The slot electrode includes a plurality of slots disposed corresponding to the plurality of patch electrodes, each patch electrode is connected to a drain of the corresponding TFT, the slot electrode includes Cu layers, and lower metal layers and/or an upper metal layer, and the lower metal layer and/or the upper metal layer decrease about a half or more of a tensile stress of the Cu layer.Type: GrantFiled: January 11, 2018Date of Patent: June 1, 2021Assignee: SHARP KABUSHIKI KAISHAInventors: Takatoshi Orui, Tadashi Ohtake, Wataru Nakamura, Kiyoshi Minoura, Kenichi Kitoh
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Publication number: 20210139615Abstract: 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: ApplicationFiled: August 18, 2017Publication date: May 13, 2021Inventors: MASANOBU MIZUSAKI, TADASHI OHTAKE
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Patent number: 10998629Abstract: A liquid crystal panel of a scanning antenna includes 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 that is formed on a first main surface of the second dielectric substrate and includes a slot arranged so as to correspond to the patch electrode; and a liquid crystal layer provided between the TFT substrate and the slot substrate. One of the TFT substrate and the slot substrate includes a projecting layer formed of resin and disposed on the liquid crystal layer side of the patch electrode or the slot electrode in a region surrounded by a sealing portion. The projecting layer is arranged so as not to overlap the patch electrode or the slot.Type: GrantFiled: July 28, 2017Date of Patent: May 4, 2021Assignee: SHARP KABUSHIKI KAISHAInventors: Tadashi Ohtake, Takatoshi Orui, Wataru Nakamura, Kiyoshi Minoura, Masanobu Mizusaki
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Publication number: 20210098875Abstract: A liquid crystal panel of a scanning antenna includes 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 that is formed on a first main surface of the second dielectric substrate and includes a slot arranged so as to correspond to the patch electrode; and a liquid crystal layer provided between the TFT substrate and the slot substrate. One of the TFT substrate and the slot substrate includes a projecting layer formed of resin and disposed on the liquid crystal layer side of the patch electrode or the slot electrode in a region surrounded by a sealing portion. The projecting layer is arranged so as not to overlap the patch electrode or the slot.Type: ApplicationFiled: July 28, 2017Publication date: April 1, 2021Inventors: TADASHI OHTAKE, TAKATOSHI ORUI, WATARU NAKAMURA, KIYOSHI MINOURA, MASANOBU MIZUSAKI
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Patent number: 10947416Abstract: 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: GrantFiled: August 18, 2017Date of Patent: March 16, 2021Assignee: SHARP KABUSHIKI KAISHAInventors: Masanobu Mizusaki, Tadashi Ohtake
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Publication number: 20200381822Abstract: A scanning antenna includes a TFT substrate including a plurality of TFTs supported by a first dielectric substrate and a plurality of patch electrodes, a slot substrate including a slot electrode supported by a second dielectric substrate, a liquid crystal layer provided between the TFT substrate and the slot substrate, and a reflective conductive plate disposed opposing the second dielectric substrate across a dielectric layer. The slot electrode includes a plurality of slots disposed corresponding to the plurality of patch electrodes, each patch electrode is connected to a drain of the corresponding TFT, the slot electrode includes Cu layers, and lower metal layers and/or an upper metal layer, and the lower metal layer and/or the upper metal layer decrease about a half or more of a tensile stress of the Cu layer.Type: ApplicationFiled: January 11, 2018Publication date: December 3, 2020Inventors: Takatoshi ORUI, Tadashi OHTAKE, Wataru NAKAMURA, Kiyoshi MINOURA, Kenichi KITOH
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Patent number: 10840266Abstract: The scanning antenna (1000) is a scanning antenna in which 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); 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 in correspondence with the plurality of patch electrodes, and a thickness of the second dielectric substrate (51) is smaller than the thickness of the first dielectric substrate (1) at least in a region where the antenna units (U) are arranged.Type: GrantFiled: February 13, 2017Date of Patent: November 17, 2020Assignee: SHARP KABUSHIKI KAISHAInventors: Takatoshi Orui, Makoto Nakazawa, Wataru Nakamura, Kiyoshi Minoura, Tadashi Ohtake, Fumiki Nakano
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Publication number: 20200279873Abstract: The scanning antenna (1000) is a scanning antenna in which 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); 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 in correspondence with the plurality of patch electrodes, and a thickness of the second dielectric substrate (51) is smaller than the thickness of the first dielectric substrate (1) at least in a region where the antenna units (U) are arranged.Type: ApplicationFiled: February 13, 2017Publication date: September 3, 2020Inventors: TAKATOSHI ORUI, MAKOTO NAKAZAWA, WATARU NAKAMURA, KIYOSHI MINOURA, TADASHI OHTAKE, FUMIKI NAKANO
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Patent number: 10637156Abstract: 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: GrantFiled: May 19, 2017Date of Patent: April 28, 2020Assignee: SHARP KABUSHIKI KAISHAInventors: Tadashi Ohtake, Kiyoshi Minoura, Makoto Nakazawa, Takatoshi Orui, Wataru Nakamura
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Patent number: 10498019Abstract: 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: GrantFiled: October 17, 2016Date of Patent: December 3, 2019Assignee: SHARP KABUSHIKI KAISHAInventors: Tadashi Ohtake, Kiyoshi Minoura, Makoto Nakazawa, Takatoshi Orui, Wataru Nakamura, Fumiki Nakano
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Publication number: 20190292307Abstract: 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: ApplicationFiled: October 20, 2017Publication date: September 26, 2019Inventors: Masanobu MIZUSAKI, Tadashi OHTAKE
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Patent number: 10372009Abstract: 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: GrantFiled: August 9, 2016Date of Patent: August 6, 2019Assignee: SHARP KABUSHIKI KAISHAInventors: Tomoko Teranishi, Hiroyuki Moriwaki, Eiji Satoh, Tadashi Ohtake, Hidefumi Yoshida, Satoshi Matsumura
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Publication number: 20190194494Abstract: 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: ApplicationFiled: August 18, 2017Publication date: June 27, 2019Inventors: MASANOBU MIZUSAKI, TADASHI OHTAKE
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Publication number: 20190190162Abstract: 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: ApplicationFiled: August 3, 2017Publication date: June 20, 2019Applicant: SHARP KABUSHIKI KAISHAInventors: TADASHI OHTAKE, TAKATOSHI ORUI, WATARU NAKAMURA, KIYOSHI MINOURA, MASANOBU MIZUSAKI
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Publication number: 20190148838Abstract: 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: ApplicationFiled: May 19, 2017Publication date: May 16, 2019Applicants: SHARP KABUSHIKI KAISHA, SHARP KABUSHIKI KAISHAInventors: TADASHI OHTAKE, KIYOSHI MINOURA, MAKOTO NAKAZAWA, TAKATOSHI ORUI, WATARU NAKAMURA
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Patent number: 10197856Abstract: 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: GrantFiled: March 28, 2016Date of Patent: February 5, 2019Assignee: SHARP KABUSHIKI KAISHAInventors: Tadashi Ohtake, Tomoko Teranishi, Hiroyuki Moriwaki, Eiji Satoh, Hao Li
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Patent number: 10177444Abstract: 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: GrantFiled: October 25, 2016Date of Patent: January 8, 2019Assignee: SHARP KABUSHIKI KAISHAInventors: Makoto Nakazawa, Takatoshi Orui, Wataru Nakamura, Tadashi Ohtake, Fumiki Nakano, Kiyoshi Minoura