Patents by Inventor Masanao Hayashi
Masanao Hayashi 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: 20200087240Abstract: A compound represented by formula (i) has, as Ki1 in the formula (i), a structure represented by any one of formula (K-1) to formula (K-3). When used in a liquid crystal composition, it adheres to substrates which hold the liquid crystal composition (liquid crystal layer) therebetween, thereby permitting liquid crystal molecules to be maintained in the state of being aligned in the vertical direction. The liquid crystal composition using the compound enables liquid crystal molecules to be aligned even when the PI layer is not provided (vertical alignment of liquid crystal molecules is induced without the voltage applied and horizontal alignment of liquid crystal molecules is realized with the voltage applied). It is possible to provide a polymerizable compound being excellent in storability and capable of uniform vertical alignment of liquid crystal molecules with no PI layer provided.Type: ApplicationFiled: May 29, 2018Publication date: March 19, 2020Applicant: DIC CorporationInventors: Ayaki Hosono, Masanao Hayashi
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Publication number: 20190264108Abstract: The spontaneous orientation aid for a liquid crystal composition provides storage stability and allows liquid crystal molecules to be vertically aligned without a PI layer when added to a liquid crystal composition. The spontaneous orientation aid for a liquid crystal composition includes a compound having a partial structure represented by formula (i), particularly in which Ki1 is represented by one of formula (K-1) to formula (K-11). When used in a liquid crystal composition, the spontaneous orientation aid can adsorb to substrates sandwiching a liquid crystal composition (liquid crystal layer) and keep the liquid crystal molecules aligned in a vertical direction. The spontaneous orientation aid makes it possible to align liquid crystal molecules without a PI layer (to induce vertical alignment of liquid crystal molecules under no applied voltage and to achieve horizontal alignment of the liquid crystal molecules under an applied voltage).Type: ApplicationFiled: October 17, 2017Publication date: August 29, 2019Applicant: DIC CorporationInventors: Masaomi Kimura, Yuuichi Inoue, Hidenari Akiyama, Masanao Hayashi, Tetsuo Kusumoto
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Patent number: 10344214Abstract: A liquid crystal display device which enables reductions in image sticking and droplet stains caused in production thereof without degradation of properties such as dielectric anisotropy, viscosity, the upper limit of the temperature of nematic phase, and rotational viscosity (?1); and a method for manufacturing such a liquid crystal display device.Type: GrantFiled: July 26, 2017Date of Patent: July 9, 2019Assignee: DIC CORPORATIONInventors: Kazuki Kurisawa, Masanao Hayashi, Shinji Ogawa
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Publication number: 20190203122Abstract: The present invention provides a spontaneous orientation aid for a liquid crystal composition, containing one kind or two or more kinds of a compound having a partial structure represented by the general formula (i), wherein Zi1 represents a single bond, etc.; Ai1 represents a divalent 6-membered aromatic group, etc.; mi1 represents an integer of 1 to 5; and Ki1 represents a structure represented by any of the following formulae (K-1) to (K-8), wherein WK1 represents a methine group, etc.; XK1 and YK1 each represent —CH2—, etc.; ZK1 represents an oxygen atom, etc.; and UK1, VK1, and SK1 each represent a methine group, etc.Type: ApplicationFiled: May 25, 2017Publication date: July 4, 2019Applicant: DIC CorporationInventors: Masaomi Kimura, Hidenari Akiyama, Yuuichi Inoue, Masanao Hayashi, Takuo Hayashi
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Publication number: 20190144750Abstract: The present invention provides an improved adhesion when a polymerizable liquid crystal composition is applied to a film substrate and cured, improved storage stability of the composition when the composition is used in a PSA display device, and a liquid crystal display device having improved display characteristics. The polymerizable compound is represented by general formula (I). The invention provides an optically anisotropic film using the polymerizable compound, and a liquid crystal display device using the polymerizable compound.Type: ApplicationFiled: April 13, 2017Publication date: May 16, 2019Applicant: DIC CorporationInventors: Masanao Hayashi, Kenta Shimizu, Manabu Takachi, Tetsuo Kusumoto
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Publication number: 20190119575Abstract: [Object] An object of the present invention is to provide a liquid crystal composition containing a polymerizable compound for use in the manufacture of a PSA or PSVA liquid crystal display device. The polymerizable compound has a sufficiently high polymerization rate. The PSA or PSVA liquid crystal display device has few or no display defects due to a change in pretilt angle, has an adequate pretilt angle, and has high responsiveness. The present invention also provides a liquid crystal display device having the liquid crystal composition. [Solution] The object is achieved by using a liquid crystal composition containing one or two or more polymerizable compounds represented by the general formula (I).Type: ApplicationFiled: April 13, 2017Publication date: April 25, 2019Applicant: DIC CorporationInventors: Marina Goto, Yuichi Inoue, Shota Kosaka, Go Sudo, Masanao Hayashi, Manabu Takachi
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Publication number: 20190025656Abstract: The invention provides a liquid crystal display element hardly generating drop marks at the time of producing, and having high reliability and improved properties of a liquid crystal display element such as dielectric anisotropy, viscosity, a nematic phase upper limit temperature, or rotational viscosity (?1) without deteriorating the properties of the liquid crystal display element and burn-in properties of the liquid crystal display element, and a method for producing the same. In addition, according to the invention, it is possible to effectively use the liquid crystal display element as a display element of a liquid crystal TV, a monitor, and the like, due to excellent high-response speed, a low frequency of occurrence of burn-in, a low frequency of generation of drop marks at the time of the producing, excellent properties of the liquid crystal display element, and high reliability.Type: ApplicationFiled: April 12, 2016Publication date: January 24, 2019Applicant: DIC CorporationInventors: Masanao Hayashi, Kenta Shimizu, Tetsuo Kusumoto, Yasuhiro Kuwana
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Publication number: 20180319755Abstract: There is provided a polymerizable composition, by which discoloration or alignment defects are less likely to occur when a filmy polymer, which is obtained by adding a polymerizable compound to the polymerizable composition and polymerizing this composition, is irradiated with ultraviolet light. There are also provided a polymer obtained by polymerizing the polymerizable composition, and an optically anisotropic body using the polymer. The present invention provides a polymerizable low-wavelength dispersive or polymerizable reverse-wavelength dispersive compound having a partial structure represented by Formula (Z-0). Further, the present invention provides a composition containing the compound; a polymer obtained by polymerizing the composition; and an optically anisotropic body obtained by using the polymer.Type: ApplicationFiled: November 9, 2015Publication date: November 8, 2018Applicant: DIC CORPORATIONInventors: Yan Teng, Masahiro Horiguchi, Yutaka Kadomoto, Akihiro Koiso, Masanao Hayashi, Yoshitaka Saitou, Zhimin Li
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Publication number: 20180142155Abstract: A liquid crystal display device which suppresses the occurrence of image sticking and dropping marks during manufacture without degrading the characteristics such as dielectric anisotropy, viscosity, nematic phase upper limit temperature, rotational viscosity (?1), etc., and a method for manufacturing the liquid crystal display device are provided. The liquid crystal display device includes a liquid crystal layer which contains a liquid crystal composition and which is held between a substrate having a common electrode and a color filer and a substrate having a plurality of pixels and pixel electrodes of the respective pixels, wherein one or both of the substrates have, without having an alignment film, an alignment control layer formed by using one or more tri- or higher-functional (meth)acrylate compounds and one or more di- or mono-functional (meth)acrylate compounds. The liquid crystal display device is applied to a liquid crystal display device for liquid crystal TV or the like.Type: ApplicationFiled: June 9, 2016Publication date: May 24, 2018Applicant: DIC CorporationInventors: Kazuki Kurisawa, Masanao Hayashi
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Patent number: 9939555Abstract: Provided is a liquid crystal alignment layer of which a constituent member is a compound represented by the general formula (I).Type: GrantFiled: May 31, 2012Date of Patent: April 10, 2018Assignee: DIC CORPORATIONInventors: Martin Schadt, Sayaka Nose, Masayuki Iwakubo, Masanao Hayashi, Yutaka Nagashima, Isa Nishiyama, Haruyoshi Takatsu
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Publication number: 20170321122Abstract: A liquid crystal display device which enables reductions in image sticking and droplet stains caused in production thereof without degradation of properties such as dielectric anisotropy, viscosity, the upper limit of the temperature of nematic phase, and rotational viscosity (?1); and a method for manufacturing such a liquid crystal display device.Type: ApplicationFiled: July 26, 2017Publication date: November 9, 2017Applicant: DIC CORPORATIONInventors: Kazuki Kurisawa, Masanao Hayashi, Shinji Ogawa
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Patent number: 9719017Abstract: There is provided a liquid crystal display device which enables reductions in image sticking and droplet stains caused in production thereof without degradation of properties such as dielectric anisotropy, viscosity, the upper limit of the temperature of nematic phase, and rotational viscosity (?1); and there is also provided a method for manufacturing such a liquid crystal display device.Type: GrantFiled: January 30, 2014Date of Patent: August 1, 2017Assignee: DIC CORPORATIONInventors: Kazuki Kurisawa, Masanao Hayashi, Shinji Ogawa
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Patent number: 9688787Abstract: An object of the invention is to provide a polymerizable compound having small refractive index anisotropy and having high storage stability and high alignment properties when constituting a polymerizable liquid crystal composition, and provide a polymerizable liquid crystal composition containing the polymerizable compound. Further, the object is to provide a polymer produced by polymerizing the polymerizable liquid crystal composition and an optically anisotropic body including the polymer. The present invention provides a polymerizable compound represented by general formula (I), a polymerizable liquid crystal composition containing the compound as a constituent component, and further provides a polymer produced by polymerizing the polymerizable liquid crystal composition and an optically anisotropic body including the polymer.Type: GrantFiled: August 14, 2015Date of Patent: June 27, 2017Assignee: DIC CORPORATIONInventors: Tetsuo Kusumoto, Masahiro Horiguchi, Takashi Matsumoto, Yoshio Aoki, Masanao Hayashi, Masayuki Iwakubo
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Patent number: 9684206Abstract: Provided is a liquid crystal alignment layer of which a constituent member is a polymer represented by the general formula (I).Type: GrantFiled: June 27, 2012Date of Patent: June 20, 2017Assignee: DIC CORPORATIONInventors: Martin Schadt, Vladimir Grigorievich Chigrinov, Hoi-Sing Kwok, Sayaka Nose, Masayuki Iwakubo, Masanao Hayashi, Yutaka Nagashima, Isa Nishiyama, Haruyoshi Takatsu
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Publication number: 20160137921Abstract: The polymerizable composition and the liquid crystal composition containing the polymerizable compound of the present invention have favorable storage stability as evaluated on the basis of the occurrence of precipitation, separation, or the like of crystals during storage. The present invention relates to a polymerizable compound, a liquid crystal composition which contains the compound, and further a liquid crystal display element which contains an optically anisotropic material which is a cured product of the liquid crystal composition, or a cured product which controls alignment of liquid crystal molecules. That is, the present invention relates to a polymerizable compound, and a liquid crystal composition containing the polymerizable compound which contains the polymerizable compound and a liquid crystal compound. The polymerizable compound is a compound represented by General Formula (I), and is useful for an optically anisotropic material, a retardation layer, an alignment film, or a polarizing layer.Type: ApplicationFiled: March 18, 2014Publication date: May 19, 2016Applicant: DIC CORPORATIONInventors: Masanao Hayashi, Masahiro Horiguchi, Tetsuo Kusumoto
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Publication number: 20160108316Abstract: There is provided a liquid crystal display device which enables reductions in image sticking and droplet stains caused in production thereof without degradation of properties such as dielectric anisotropy, viscosity, the upper limit of the temperature of nematic phase, and rotational viscosity (?1); and there is also provided a method for manufacturing such a liquid crystal display device.Type: ApplicationFiled: January 30, 2014Publication date: April 21, 2016Applicant: DIC CORPORATIONInventors: Kazuki Kurisawa, Masanao Hayashi, Shinji Ogawa
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Publication number: 20150361190Abstract: An object of the invention is to provide a polymerizable compound having small refractive index anisotropy and having high storage stability and high alignment properties when constituting a polymerizable liquid crystal composition, and provide a polymerizable liquid crystal composition containing the polymerizable compound. Further, the object is to provide a polymer produced by polymerizing the polymerizable liquid crystal composition and an optically anisotropic body including the polymer. The present invention provides a polymerizable compound represented by general formula (I), a polymerizable liquid crystal composition containing the compound as a constituent component, and further provides a polymer produced by polymerizing the polymerizable liquid crystal composition and an optically anisotropic body including the polymer.Type: ApplicationFiled: August 14, 2015Publication date: December 17, 2015Applicant: DIC CORPORATIONInventors: Tetuo Kusumoto, Masahiro Horiguchi, Takashi Matsumoto, Yoshio Aoki, Masanao Hayashi, Masayuki Iwakubo
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Patent number: 9120883Abstract: An object of the invention is to provide a polymerizable compound having small refractive index anisotropy and having high storage stability and high alignment properties when constituting a polymerizable liquid crystal composition, and provide a polymerizable liquid crystal composition containing the polymerizable compound. Further, the object is to provide a polymer produced by polymerizing the polymerizable liquid crystal composition and an optically anisotropic body including the polymer. The present invention provides a polymerizable compound represented by general formula (I), a polymerizable liquid crystal composition containing the compound as a constituent component, and further provides a polymer produced by polymerizing the polymerizable liquid crystal composition and an optically anisotropic body including the polymer.Type: GrantFiled: April 5, 2012Date of Patent: September 1, 2015Assignee: DIC CORPORATIONInventors: Tetuo Kusumoto, Masahiro Horiguchi, Takashi Matsumoto, Yoshio Aoki, Masanao Hayashi, Masayuki Iwakubo
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Publication number: 20140221574Abstract: Provided is a liquid crystal alignment layer of which a constituent member is a polymer represented by the general formula (I).Type: ApplicationFiled: June 27, 2012Publication date: August 7, 2014Applicant: DIC CORPORATIONInventors: Martin Schadt, Vladimir Grigorievich Chigrinov, Hoi-Sing Kwok, Sayaka Nose, Masayuki Iwakubo, Masanao Hayashi, Yutaka Nagashima, Isa Nishiyama, Haruyoshi Takatsu
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Publication number: 20140121345Abstract: Provided is a liquid crystal alignment layer of which a constituent member is a compound represented by the general formula (I).Type: ApplicationFiled: May 31, 2012Publication date: May 1, 2014Applicant: DIC CORPORATIONInventors: Martin Schadt, Sayaka Nose, Masayuki Iwakubo, Masanao Hayashi, Yutaka Nagashima, Isa Nishiyama, Haruyoshi Takatsu