Patents by Inventor Subaru Kawasaki
Subaru Kawasaki 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: 9234134Abstract: To provide a liquid crystal composition satisfying at least one of characteristics or having a suitable balance regarding at least two of the characteristics such as high maximum temperature of a nematic phase, low minimum temperature thereof, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light and heat; an AM device having short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth. The liquid crystal composition has negative dielectric anisotropy and contains a compound having high maximum temperature as a first component and a specific compound having large negative dielectric anisotropy as a second component, and may contain a specific compound having small viscosity as a third component, and a specific compound having large negative dielectric anisotropy as a fourth component. A liquid crystal display device includes the composition.Type: GrantFiled: November 28, 2012Date of Patent: January 12, 2016Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Kazuhiko Saigusa, Subaru Kawasaki, Takayoshi Yanai, Norikatsu Hattori
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Patent number: 9150787Abstract: A liquid crystal composition including a polymerizable compound, and an AM device including the liquid crystal composition are described. The liquid crystal composition includes the compound (1) and the compound (2): wherein P1 and P2 are polymerizable groups; the rings A, B, C and E are 1,4-cyclohexylene or 1,4-phenylene, etc.; the ring D is 2,3-difluoro-1,4-phenylene, etc.; Z1 and Z2 are alkylene, etc.; L1, Z3 and Z4 are a single bond, etc.; R1 and R2 are alkyl, etc.; and q, r and s are 1, etc.Type: GrantFiled: January 14, 2013Date of Patent: October 6, 2015Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Yasuyuki Gotoh, Subaru Kawasaki, Norikatsu Hattori
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Patent number: 8968597Abstract: A liquid crystal composition that satisfies at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of a nematic phase, a small viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat or that is suitably balanced between at least two of the characteristics, is described. The liquid crystal composition includes a compound having three or more polymerizable groups as a first component and a compound having one or two polymerizable groups as a second component in a suitable ratio, and that may include a specific compound having a large negative dielectric anisotropy and a low minimum temperature as a third component or a specific compound having a small viscosity or a high maximum temperature as a fourth component.Type: GrantFiled: August 6, 2013Date of Patent: March 3, 2015Assignees: JNC Corporation, JNC Petrochemical CorporationInventors: Yoshimasa Furusato, Subaru Kawasaki, Eriko Kurihara
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Publication number: 20140339472Abstract: To provide a liquid crystal composition satisfying at least one of characteristics or having a suitable balance regarding at least two of the characteristics such as high maximum temperature of a nematic phase, low minimum temperature thereof, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light and heat; an AM device having short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth. The liquid crystal composition has negative dielectric anisotropy and contains a compound having high maximum temperature as a first component and a specific compound having large negative dielectric anisotropy as a second component, and may contain a specific compound having small viscosity as a third component, and a specific compound having large negative dielectric anisotropy as a fourth component. A liquid crystal display device includes the composition.Type: ApplicationFiled: November 28, 2012Publication date: November 20, 2014Inventors: Kazuhiko Saigusa, Subaru Kawasaki, Takayoshi Yanai, Norikatsu Hattori
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Publication number: 20140043579Abstract: A liquid crystal composition that satisfies at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of a nematic phase, a small viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat or that is suitably balanced between at least two of the characteristics, is described. The liquid crystal composition includes a compound having three or more polymerizable groups as a first component and a compound having one or two polymerizable groups as a second component in a suitable ratio, and that may include a specific compound having a large negative dielectric anisotropy and a low minimum temperature as a third component or a specific compound having a small viscosity or a high maximum temperature as a fourth component.Type: ApplicationFiled: August 6, 2013Publication date: February 13, 2014Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATIONInventors: YOSHIMASA FURUSATO, SUBARU KAWASAKI, ERIKO KURIHARA
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Patent number: 8637125Abstract: Providing a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature of nematic phase, low minimum temperature of the nematic phase, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light and heat, or having a suitable balance regarding at least two of the characteristics; and an AM device having short response time, large voltage holding ratio, large contrast ratio, long service life and so forth. The liquid crystal composition has a negative dielectric anisotropy and contains a specific two-ring compound having a low minimum temperature as a first component, a specific compound having a large negative dielectric anisotropy as a second component, a specific compound having a low viscosity as a third component, and a specific compound having a large negative dielectric anisotropy as a fourth component. The liquid crystal display device contains the composition.Type: GrantFiled: April 12, 2012Date of Patent: January 28, 2014Assignees: JNC Corporation, JNC Petrochemical CorporationInventors: Yasuyuki Goto, Subaru Kawasaki, Norikatsu Hattori
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Publication number: 20140010973Abstract: A liquid crystal composition including a polymerizable compound, and an AM device including the liquid crystal composition are described. The liquid crystal composition includes the compound (1) and the compound (2): wherein P1 and P2 are polymerizable groups; the rings A, B, C and E are 1,4-cyclohexylene or 1,4-phenylene, etc.; the ring D is 2,3-difluoro-1,4-phenylene, etc.; Z1 and Z2 are alkylene, etc.; L1, Z3 and Z4 are a single bond, etc.; R1 and R2 are alkyl, etc.; and q, r and s are 1, etc.Type: ApplicationFiled: January 14, 2013Publication date: January 9, 2014Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATIONInventors: YASUYUKI GOTOH, SUBARU KAWASAKI, NORIKATSU HATTORI
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Patent number: 8496850Abstract: Disclosed is a liquid crystal composition that can satisfy at least one of properties such as a high upper limit temperature of a nematic phase, a low lower limit temperature of a nematic phase, a low viscosity, a proper optical anisotropy, a negatively high dielectric anisotropy, a high specific resistance, a high stability against ultraviolet light, and a high stability against heat, or has a proper balance between at least two of the above properties. The liquid crystal composition comprises a first component of a dicyclic compound which has a negatively high dielectric anisotropy and contains fluorines at least three of lateral positions, a second component of a specific compound having a low viscosity, and a third component of a specific compound having a negatively high dielectric anisotropy and contains a negatively dielectric anisotropy. The liquid crystal display element comprises the composition.Type: GrantFiled: August 19, 2009Date of Patent: July 30, 2013Assignees: JNC Corporation, JNC Petrochemical CorporationInventors: Norikatsu Hattori, Teru Shimada, Hiroaki Fujita, Subaru Kawasaki
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Patent number: 8475679Abstract: The invention is to provide a liquid crystal composition that satisfies at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of a nematic phase, a small viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or that is suitably balanced regarding at least two of the characteristics; and is to provide a AM device that has a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth, wherein the liquid crystal composition has negative dielectric anisotropy and includes a two-ring compound having a large negative dielectric anisotropy and having at least three fluorines or chlorines at the lateral positions as a first component, a specific compound having a large negative dielectric anisotropy as a second component, a specific compound having a small viscosity as a third component,Type: GrantFiled: September 24, 2009Date of Patent: July 2, 2013Assignees: JNC Corporation, JNC Petrochemical CorporationInventors: Yoshimasa Furusato, Norikatsu Hattori, Subaru Kawasaki
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Publication number: 20120261614Abstract: Providing a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature of nematic phase, low minimum temperature of the nematic phase, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light and heat, or having a suitable balance regarding at least two of the characteristics; and an AM device having short response time, large voltage holding ratio, large contrast ratio, long service life and so forth. The liquid crystal composition has a negative dielectric anisotropy and contains a specific two-ring compound having a low minimum temperature as a first component, a specific compound having a large negative dielectric anisotropy as a second component, a specific compound having a low viscosity as a third component, and a specific compound having a large negative dielectric anisotropy as a fourth component. The liquid crystal display device contains the composition.Type: ApplicationFiled: April 12, 2012Publication date: October 18, 2012Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATIONInventors: YASUYUKI GOTO, SUBARU KAWASAKI, NORIKATSU HATTORI
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Patent number: 8211332Abstract: The subject is to provide a liquid crystal composition that satisfies at least one characteristic among characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of a nematic phase, a low viscosity, a suitable optical anisotropy, a negatively large dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or that is suitably balanced regarding two or more characteristics. The subject is to provide an AM device that has a short response time, a high voltage holding ratio, a high contrast ratio, a long service life and so forth.Type: GrantFiled: December 16, 2009Date of Patent: July 3, 2012Assignees: JNC Corporation, Chisso Petrochemical CorporationInventors: Norikatsu Hattori, Subaru Kawasaki
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Patent number: 8158219Abstract: The invention is to provide a liquid crystal composition that satisfies at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of a nematic phase, a small viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or that is suitably balanced regarding at least two of the characteristics; and is to provide a AM device that has a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth, wherein the liquid crystal composition has negative dielectric anisotropy and includes a two-ring compound having a large negative dielectric anisotropy and having at least three fluorines at the lateral positions as a first component, a specific two-ring or three-ring compound having a pyran ring as a second component, a specific compound having a small viscosity as a third component and a specific coType: GrantFiled: September 2, 2009Date of Patent: April 17, 2012Assignees: JNC Corporation, Chisso Petrochemical CorporationInventors: Norikatsu Hattori, Masayuki Saito, Subaru Kawasaki, Hiroaki Fujita
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Patent number: 8097309Abstract: The subject is to provide a liquid crystal composition that satisfies at least one characteristic among characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of a nematic phase, a small viscosity, a suitable optical anisotropy, a negatively large dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or that is suitably balanced regarding two or more characteristics. The other subject is to provide an AM device that has a short response time, a high voltage holding ratio, a high contrast ratio, a long service life and so forth.Type: GrantFiled: June 18, 2010Date of Patent: January 17, 2012Assignees: JNC Corporation Inc., Chisso Petrochemical CorporationInventors: Subaru Kawasaki, Norikatsu Hattori
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Publication number: 20110198537Abstract: The invention is to provide a liquid crystal composition that satisfies at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of a nematic phase, a small viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or that is suitably balanced regarding at least two of the characteristics; and is to provide a AM device that has a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth, wherein the liquid crystal composition has negative dielectric anisotropy and includes a two-ring compound having a large negative dielectric anisotropy and having at least three fluorines or chlorines at the lateral positions as a first component, a specific compound having a large negative dielectric anisotropy as a second component, a specific compound having a small viscosity as a third component,Type: ApplicationFiled: September 24, 2009Publication date: August 18, 2011Applicants: JNC CORPORATION, CHISSO PETROCHEMICAL CORPORATIONInventors: Yoshimasa Furusato, Norikatsu Hattori, Subaru Kawasaki
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Publication number: 20110155953Abstract: Disclosed is a liquid crystal composition that can satisfy at least one of properties such as a high upper limit temperature of a nematic phase, a low lower limit temperature of a nematic phase, a low viscosity, a proper optical anisotropy, a negatively high dielectric anisotropy, a high specific resistance, a high stability against ultraviolet light, and a high stability against heat, or has a proper balance between at least two of the above properties. The liquid crystal composition comprises a first component of a dicyclic compound which has a negatively high dielectric anisotropy and contains fluorines at least three of lateral positions, a second component of a specific compound having a low viscosity, and a third component of a specific compound having a negatively high dielectric anisotropy and contains a negatively dielectric anisotropy. The liquid crystal display element comprises the composition.Type: ApplicationFiled: August 19, 2009Publication date: June 30, 2011Applicants: CHISSO CORPORATION, CHISSO PETROCHEMICAL CORPORATIONInventors: Norikatsu Hattori, Teru Shimada, Hiroaki Fujita, Subaru Kawasaki
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Publication number: 20110140040Abstract: The invention is to provide a liquid crystal composition that satisfies at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of a nematic phase, a small viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or that is suitably balanced regarding at least two of the characteristics; and is to provide a AM device that has a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth, wherein the liquid crystal composition has negative dielectric anisotropy and includes a two-ring compound having a large negative dielectric anisotropy and having at least three fluorines at the lateral positions as a first component, a specific two-ring or three-ring compound having a pyran ring as a second component, a specific compound having a small viscosity as a third component and a specific coType: ApplicationFiled: September 2, 2009Publication date: June 16, 2011Applicant: CHISSO CORPORATIONInventors: Norikatsu Hattori, Masayuki Saito, Subaru Kawasaki, Hiroaki Fujita
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Publication number: 20110043747Abstract: Subject The subject is to provide a liquid crystal composition that satisfies at least one characteristic among characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of a nematic phase, a small viscosity, a suitable optical anisotropy, a negatively large dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or that is suitably balanced regarding two or more characteristics. The other subject is to provide an AM device that has a short response time, a high voltage holding ratio, a high contrast ratio, a long service life and so forth.Type: ApplicationFiled: June 18, 2010Publication date: February 24, 2011Applicants: CHISSO CORPORATION, CHISSO PETROCHEMICAL CORPORATIONInventors: Subaru KAWASAKI, Norikatsu HATTORI
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Publication number: 20100181532Abstract: The subject is to provide a liquid crystal composition that satisfies at least one characteristic among characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of a nematic phase, a low viscosity, a suitable optical anisotropy, a negatively large dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or that is suitably balanced regarding two or more characteristics. The subject is to provide an AM device that has a short response time, a high voltage holding ratio, a high contrast ratio, a long service life and so forth.Type: ApplicationFiled: December 16, 2009Publication date: July 22, 2010Applicants: CHISSO CORPORATION, CHISSO PETROCHEMICAL CORPORATIONInventors: Norikatsu HATTORI, Subaru KAWASAKI