Patents by Inventor Mariko HONDA
Mariko HONDA 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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Publication number: 20240094577Abstract: Provided is a liquid crystal display device capable of switching between a transparent state and a scattering state, reducing or preventing a decrease in transmittance in the transparent state, and reducing or preventing a decrease in luminance in the panel central portion in the scattering state. The liquid crystal display device includes, sequentially from its viewing surface side toward its back surface side: a first liquid crystal panel; a light source; and a second liquid crystal panel, the first liquid crystal panel including a polymer dispersed liquid crystal containing a polymer network and liquid crystal components, the light source being configured to irradiate a back surface side main surface of the first liquid crystal panel with light from an oblique direction.Type: ApplicationFiled: October 25, 2023Publication date: March 21, 2024Inventors: Koji MURATA, Yasuhiro HASEBA, Kazutaka HANAOKA, Kimiaki NAKAMURA, Mariko HONDA, Atsuko KANASHIMA, Tadashi HASEGAWA, Shinji SHIMADA
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Patent number: 11852911Abstract: Provided is a liquid crystal display device capable of switching between a transparent state and a scattering state, reducing or preventing a decrease in transmittance in the transparent state, and reducing or preventing a decrease in luminance in the panel central portion in the scattering state. The liquid crystal display device includes, sequentially from its viewing surface side toward its back surface side: a first liquid crystal panel; a light source; and a second liquid crystal panel, the first liquid crystal panel including a polymer dispersed liquid crystal containing a polymer network and liquid crystal components, the light source being configured to irradiate a back surface side main surface of the first liquid crystal panel with light from an oblique direction.Type: GrantFiled: June 29, 2022Date of Patent: December 26, 2023Assignee: SHARP DISPLAY TECHNOLOGY CORPORATIONInventors: Koji Murata, Yasuhiro Haseba, Kazutaka Hanaoka, Kimiaki Nakamura, Mariko Honda, Atsuko Kanashima, Tadashi Hasegawa, Shinji Shimada
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Patent number: 11829021Abstract: Provided is a polymer dispersed liquid crystal display device including: a pair of substrates including an electrode on at least one substrate; and a composite layer disposed between the pair of substrates. The composite layer includes a liquid crystal component and a polymer network constituted by a cured product of a photopolymerizable liquid crystal compound, and is in a transparent state when no voltage is applied and in a scattering state when a voltage is applied, and the polymer network has a helical structure with a number of turns of from one to less than eight in the composite layer.Type: GrantFiled: January 19, 2022Date of Patent: November 28, 2023Assignee: Sharp Display Technology CorporationInventors: Koji Murata, Kimiaki Nakamura, Mariko Honda, Tadashi Hasegawa, Kazutaka Hanaoka, Yasuhiro Haseba, Shinji Shimada, Atsuko Kanashima
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Patent number: 11719972Abstract: The display device includes a liquid crystal panel including a polymer dispersed liquid crystal (PDLC) layer and a light source, the PDLC layer containing a polymer network and liquid crystal components dispersed in the polymer network, the light source being apart from the liquid crystal panel with an air layer, and configured to emit light toward the liquid crystal panel from an oblique direction, the end portion and the central portion of the PDLC layer each having, in the scattering state, an angle dependence which changes a transmittance of light to be emitted from a front surface based on an angle at which light is incident on a back surface of the PDLC layer, with the angle dependence of the end portion being different from the angle dependence of the central portion, the light source irradiating the end portion and the central portion with light at different angles.Type: GrantFiled: June 7, 2022Date of Patent: August 8, 2023Assignee: SHARP KABUSHIKI KAISHAInventors: Koji Murata, Kazutaka Hanaoka, Kimiaki Nakamura, Atsuko Kanashima, Mariko Honda, Shinji Shimada
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Publication number: 20230024383Abstract: Provided is a liquid crystal display device capable of switching between a transparent state and a scattering state, reducing or preventing a decrease in transmittance in the transparent state, and reducing or preventing a decrease in luminance in the panel central portion in the scattering state. The liquid crystal display device includes, sequentially from its viewing surface side toward its back surface side: a first liquid crystal panel; a light source; and a second liquid crystal panel, the first liquid crystal panel including a polymer dispersed liquid crystal containing a polymer network and liquid crystal components, the light source being configured to irradiate a back surface side main surface of the first liquid crystal panel with light from an oblique direction.Type: ApplicationFiled: June 29, 2022Publication date: January 26, 2023Inventors: Koji MURATA, Yasuhiro HASEBA, Kazutaka HANAOKA, Kimiaki NAKAMURA, Mariko HONDA, Atsuko KANASHIMA, Tadashi HASEGAWA, Shinji SHIMADA
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Publication number: 20230004031Abstract: The display device includes a liquid crystal panel including a polymer dispersed liquid crystal (PDLC) layer and a light source, the PDLC layer containing a polymer network and liquid crystal components dispersed in the polymer network, the light source being apart from the liquid crystal panel with an air layer, and configured to emit light toward the liquid crystal panel from an oblique direction, the end portion and the central portion of the PDLC layer each having, in the scattering state, an angle dependence which changes a transmittance of light to be emitted from a front surface based on an angle at which light is incident on a back surface of the PDLC layer, with the angle dependence of the end portion being different from the angle dependence of the central portion, the light source irradiating the end portion and the central portion with light at different angles.Type: ApplicationFiled: June 7, 2022Publication date: January 5, 2023Inventors: Koji MURATA, Kazutaka HANAOKA, Kimiaki NAKAMURA, Atsuko KANASHIMA, Mariko HONDA, Shinji SHIMADA
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Publication number: 20220236598Abstract: Provided is a polymer dispersed liquid crystal display device including: a pair of substrates including an electrode on at least one substrate; and a composite layer disposed between the pair of substrates. The composite layer includes a liquid crystal component and a polymer network constituted by a cured product of a photopolymerizable liquid crystal compound, and is in a transparent state when no voltage is applied and in a scattering state when a voltage is applied, and the polymer network has a helical structure with a number of turns of from one to less than eight in the composite layer.Type: ApplicationFiled: January 19, 2022Publication date: July 28, 2022Inventors: Koji MURATA, Kimiaki NAKAMURA, Mariko HONDA, Tadashi HASEGAWA, Kazutaka HANAOKA, Yasuhiro HASEBA, Shinji SHIMADA, Atsuko KANASHIMA
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Publication number: 20210395926Abstract: Provided is a thermal molding method for producing a thermally molded article having excellent abrasion resistance at its melt-fused part. Polyamide 6 and a copolyester are prepared separately. The copolyester contains terephthalic acid, ethylene glycol, and 1,4-butanediol as copolymerization units. The copolyester may further contain ?-caprolactone and/or diethylene glycol as a copolymerization unit. A multifilament yarn in which core-sheath type composite filaments each containing a core component and a sheath component at a ratio of 1 to 4:1 by mass are bundled is produced by a composite melt-spinning method using the polyamide 6 as the core component and the copolyester as the sheath component. Using the multifilament yarn, a product of filaments is produced by weaving, knitting, knitting and braiding, or braiding.Type: ApplicationFiled: September 26, 2019Publication date: December 23, 2021Inventors: Kohei IKEDA, Mariko HONDA, Yuta MIZUNO, Shohei IKEGAMI
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Publication number: 20210054537Abstract: To provide a thermoforming method for obtaining a thermoformed article that exhibits excellent abrasion resistance at melt-bonded portions, and excellent adhesive strength between woven fabrics or to another kind of article. Polyethylene having a melt flow rate, measured under conditions of a temperature of 280° C. and a load of 2.16 kg, of 10 to 15 g/10 min and polyethylene terephthalate are prepared. By a conjugate melt spinning method using the polyethylene terephthalate as a core component and the polyethylene as a sheath component, multi-filament yarn in which core-sheath composite filaments having a core component:sheath component mass ratio of 1 to 4:1 are bundled is obtained. A product of filaments is obtained by weaving, knitting, braiding or winding using the multi-filament yarn.Type: ApplicationFiled: March 14, 2019Publication date: February 25, 2021Inventors: Kohei IKEDA, Mariko HONDA