Patents by Inventor Takayoshi Yanai
Takayoshi Yanai 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: 9499745Abstract: A liquid crystal composition contains a specific compound having large dielectric anisotropy as a first component and a specific bicyclic compound having small viscosity as a second component, and may contain a specific compound having high maximum temperature or large dielectric anisotropy as a third component and a specific compound having high maximum temperature or small viscosity as a fourth component, and has a nematic phase. The liquid crystal display device includes the composition.Type: GrantFiled: November 26, 2013Date of Patent: November 22, 2016Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Takayoshi Yanai, Norikatsu Hattori, Taketo Maeda
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Patent number: 9382479Abstract: A liquid crystal composition is described, satisfying at least one of characteristics such as a high maximum temperature of nematic phase, a low minimum temperature of nematic phase, a small viscosity, a suitable optical anisotropy, a large dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or having a suitable balance regarding at least two of the characteristics. An AM LCD device including the liquid crystal composition is also described. The liquid crystal composition has a nematic phase and contains a specific compound having a large dielectric anisotropy as a first component, and a specific compound having a small viscosity as a second component, and may also contain a specific compound having a high maximum temperature or a large dielectric anisotropy as a third component.Type: GrantFiled: December 28, 2012Date of Patent: July 5, 2016Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Takayoshi Yanai, Norikatsu Hattori, Taketo Maeda
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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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Publication number: 20150299573Abstract: A liquid crystal composition contains a specific compound having large dielectric anisotropy as a first component and a specific bicyclic compound having small viscosity as a second component, and may contain a specific compound having high maximum temperature or large dielectric anisotropy as a third component and a specific compound having high maximum temperature or small viscosity as a fourth component, and has a nematic phase. The liquid crystal display device includes the composition.Type: ApplicationFiled: November 26, 2013Publication date: October 22, 2015Inventors: Takayoshi YANAI, Norikatsu HATTORI, Taketo MAEDA
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Publication number: 20150299572Abstract: To provide a liquid crystal composition satisfies at least one or having a suitable balance regarding at least two of characteristics such as high maximum temperature, low minimum temperature, small viscosity, suitable optical anisotropy, large positive dielectric anisotropy, large specific resistance, high stability to ultraviolet light and heat and a large elastic constant; and an AM device having short response time, a large voltage holding ratio, low threshold voltage, a large contrast ratio, long service life and so forth. The liquid crystal composition contains a specific compound having large optical anisotropy and large dielectric anisotropy as a first component and a specific compound having large dielectric anisotropy as a second component, and may contain a specific compound having high maximum temperature or small viscosity as a third component and a specific compound having large dielectric anisotropy as a fourth component, and a liquid crystal display device includes the composition.Type: ApplicationFiled: November 26, 2013Publication date: October 22, 2015Inventors: MASAYUKI SAITO, TAKAYOSHI YANAI
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Publication number: 20150299571Abstract: A liquid crystal composition and an AM device using the same are described. The liquid crystal composition has a negative dielectric anisotropy, and 4.2 GPa·s/N or less as a ratio of rotational viscosity to an elastic constant, and contains a specific compound having a large negative dielectric anisotropy as a first component and a specific compound having a polymerizable group as a second component, and may contain a specific compound having a small viscosity or a large maximum temperature as a third component and a specific compound having a large negative dielectric anisotropy as a fourth component, and a liquid crystal display device includes the composition.Type: ApplicationFiled: April 12, 2013Publication date: October 22, 2015Inventors: TAKAYOSHI YANAI, NORIKATSU HATTORI, MASAYUKI SAITO
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Patent number: 9074132Abstract: To provide a highly reactive polymerizable compound having a high solubility in a liquid crystal compound; a liquid crystal composition satisfying at least one characteristic such as a high maximum temperature of a nematic phase, a low minimum temperature thereof, a small viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy and specific resistance, a high stability to ultraviolet light and heat, and having a suitable balance regarding at least two characteristics; a PSA device having a short response time, a large pretilt angle, a small residual monomer concentration, a large voltage holding ratio and contrast ratio and a long life; a polymerizable compound into which one bonding group or nonidentical reaction group is introduced by constructing a polymer structure having a high polymerization degree in a PSA device manufacturing process to obtain a stable display, a liquid crystal composition containing thereof, and a liquid crystal device including thereof.Type: GrantFiled: August 29, 2012Date of Patent: July 7, 2015Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Yasuyuki Gotoh, Yukihiro Fujita, Takayoshi Yanai, Norikatsu Hattori
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Patent number: 9057019Abstract: A liquid crystal composition is described, which has a nematic phase, contains a specific compound having a high maximum temperature or a large dielectric anisotropy as a first component and a specific compound having a large dielectric anisotropy as a second component, and may also contain a specific compound having a high maximum temperature or a small viscosity as a third component and a specific compound having a high maximum temperature or a large dielectric anisotropy as a fourth component. An active-matrix (AM) liquid crystal display device including the liquid crystal composition is also described.Type: GrantFiled: September 13, 2013Date of Patent: June 16, 2015Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Takayoshi Yanai, Yasuyuki Gotoh, Chikahide Kanadani, Hiroki Ookawa
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Patent number: 9005479Abstract: The invention is to provide an AM device containing a liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of the nematic phase, a small viscosity, a large optical anisotropy, a large positive dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to and heat, or having a suitable balance regarding at least two of the characteristics, and the AM device having a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth; wherein a liquid crystal display device contains a liquid crystal composition having a positive dielectric anisotropy and containing a specific compound having a large positive dielectric anisotropy as a first component and a specific compound having a small viscosity as a second component.Type: GrantFiled: November 19, 2010Date of Patent: April 14, 2015Assignees: JNC Corporation, JNC Petrochemical CorporationInventors: Takayoshi Yanai, Masayuki Saito
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Patent number: 8961824Abstract: To provide a liquid crystal composition satisfying at least one characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature thereof, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy and specific resistance, high stability to ultraviolet light and heat, or having a suitable balance regarding at least two of the characteristics; an AM device having short response time, a large voltage holding ratio and contrast ratio, and a long life. A liquid crystal composition has a nematic phase and contains a specific straight-chain compound as a first component and a specific compound having a large dielectric anisotropy as second component, and may contain a specific compound having a high maximum temperature or small viscosity as a third component and a specific compound having a high maximum temperature or large dielectric anisotropy as a fourth component, and a liquid crystal display device includes the composition.Type: GrantFiled: July 18, 2013Date of Patent: February 24, 2015Assignees: JNC Corporation, JNC Petrochemical CorporationInventors: Takayoshi Yanai, Norikatsu Hattori, Hiroyuki Tanaka
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Patent number: 8920674Abstract: To provide a liquid crystal composition satisfying at least one characteristic including a high maximum temperature of a nematic phase, a low minimum temperature thereof, a small viscosity, a large optical anisotropy, dielectric anisotropy and specific resistance, a high stability to ultraviolet light and heat, or a liquid crystal composition having a suitable balance regarding at least two characteristics; and an AM device having a short response time, a large voltage holding ratio and contrast ratio and a long life; a liquid crystal composition has a negative dielectric anisotropy and contains a compound having a low minimum temperature as a first component and a compound having a large negative dielectric anisotropy as a second component, and may contain a compound having a small viscosity as a third component and a compound having a large negative dielectric anisotropy as a fourth component, and a liquid crystal display device containing the composition.Type: GrantFiled: September 14, 2012Date of Patent: December 30, 2014Assignees: JNC Corporation, JNC Petrochemical CorporationInventors: Takayoshi Yanai, Norikatsu Hattori, Hiroyuki Tanaka
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Publication number: 20140361219Abstract: A liquid crystal composition is described, satisfying at least one of characteristics such as a high maximum temperature of nematic phase, a low minimum temperature of nematic phase, a small viscosity, a suitable optical anisotropy, a large dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or having a suitable balance regarding at least two of the characteristics. An AM LCD device including the liquid crystal composition is also described. The liquid crystal composition has a nematic phase and contains a specific compound having a large dielectric anisotropy as a first component, and a specific compound having a small viscosity as a second component, and may also contain a specific compound having a high maximum temperature or a large dielectric anisotropy as a third component.Type: ApplicationFiled: December 28, 2012Publication date: December 11, 2014Inventors: Takayoshi Yanai, Norikatsu Hattori, Taketo Maeda
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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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Patent number: 8795795Abstract: 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 large optical anisotropy, a large positive dielectric anisotropy, a large specific resistance, a large elastic coefficient, a high stability to ultraviolet light and heat, or that is suitably balanced between at least two of the characteristics. As the liquid crystal display device containing the compositions is to provide an AM device that has a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth, thus it can be used for the liquid crystal projector, liquid crystal television and so forth.Type: GrantFiled: June 6, 2012Date of Patent: August 5, 2014Assignees: JNC Corporation, JNC Petrochemical CorporationInventors: Takayoshi Yanai, Norikatsu Hattori, Tokifumi Masukawa
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Publication number: 20140084210Abstract: A liquid crystal composition is described, which has a nematic phase, contains a specific compound having a high maximum temperature or a large dielectric anisotropy as a first component and a specific compound having a large dielectric anisotropy as a second component, and may also contain a specific compound having a high maximum temperature or a small viscosity as a third component and a specific compound having a high maximum temperature or a large dielectric anisotropy as a fourth component. An active-matrix (AM) liquid crystal display device including the liquid crystal composition is also described.Type: ApplicationFiled: September 13, 2013Publication date: March 27, 2014Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATIONInventors: TAKAYOSHI YANAI, YASUYUKI GOTOH, CHIKAHIDE KANADANI, HIROKI OOKAWA
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Publication number: 20140027672Abstract: To provide a liquid crystal composition satisfying at least one characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature thereof, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy and specific resistance, high stability to ultraviolet light and heat, or having a suitable balance regarding at least two of the characteristics; an AM device having short response time, a large voltage holding ratio and contrast ratio, and a long life. A liquid crystal composition has a nematic phase and contains a specific straight-chain compound as a first component and a specific compound having a large dielectric anisotropy as second component, and may contain a specific compound having a high maximum temperature or small viscosity as a third component and a specific compound having a high maximum temperature or large dielectric anisotropy as a fourth component, and a liquid crystal display device includes the composition.Type: ApplicationFiled: July 18, 2013Publication date: January 30, 2014Inventors: TAKAYOSHI YANAI, NORIKATSU HATTORI, HIROYUKI TANAKA
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Patent number: 8592008Abstract: To provide a liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature thereof, a small viscosity, a large optical anisotropy, a large dielectric anisotropy, a large specific resistance, a large elastic constant, a high stability to ultraviolet light and heat, or a liquid crystal composition having a suitable balance regarding at least two of the characteristics; and an AM device having a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth; wherein a liquid crystal composition has a nematic phase and contains a specific compound having a high maximum temperature and a large dielectric anisotropy as a first component, and a specific compound having a small viscosity as a second component, and may contain a specific compound having a large dielectric anisotropy as a third component.Type: GrantFiled: June 11, 2012Date of Patent: November 26, 2013Assignees: JNC Corporation, JNC Petrochemical CorporationInventors: Taketo Maeda, Takayoshi Yanai, Hiroyuki Tanaka, Norikatsu Hattori
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Publication number: 20130135575Abstract: To provide a highly reactive polymerizable compound having a high solubility in a liquid crystal compound; a liquid crystal composition satisfying at least one characteristic such as a high maximum temperature of a nematic phase, a low minimum temperature thereof, a small viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy and specific resistance, a high stability to ultraviolet light and heat, and having a suitable balance regarding at least two characteristics; a PSA device having a short response time, a large pretilt angle, a small residual monomer concentration, a large voltage holding ratio and contrast ratio and a long life; a polymerizable compound into which one bonding group or nonidentical reaction group is introduced by constructing a polymer structure having a high polymerization degree in a PSA device manufacturing process to obtain a stable display, a liquid crystal composition containing thereof, and a liquid crystal device including thereof.Type: ApplicationFiled: August 29, 2012Publication date: May 30, 2013Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATIONInventors: YASUYUKI GOTOH, YUKIHIRO FUJITA, TAKAYOSHI YANAI, NORIKATSU HATTORI
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Publication number: 20130069002Abstract: To provide a liquid crystal composition satisfying at least one characteristic including a high maximum temperature of a nematic phase, a low minimum temperature thereof, a small viscosity, a large optical anisotropy, dielectric anisotropy and specific resistance, a high stability to ultraviolet light and heat, or a liquid crystal composition having a suitable balance regarding at least two characteristics; and an AM device having a short response time, a large voltage holding ratio and contrast ratio and a long life; a liquid crystal composition has a negative dielectric anisotropy and contains a compound having a low minimum temperature as a first component and a compound having a large negative dielectric anisotropy as a second component, and may contain a compound having a small viscosity as a third component and a compound having a large negative dielectric anisotropy as a fourth component, and a liquid crystal display device containing the composition.Type: ApplicationFiled: September 14, 2012Publication date: March 21, 2013Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATIONInventors: Takayoshi YANAI, Norikatsu HATTORI, Hiroyuki TANAKA
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Patent number: 8398886Abstract: The invention provides a liquid crystal composition that includes a specific compound having a negatively large dielectric anisotropy as a first component and a specific compound having a negatively large dielectric anisotropy as a second component, that optionally includes a specific compound having a high maximum temperature or a small viscosity as a third component and a specific compound having a negatively large dielectric anisotropy as a fourth component, and that has negative dielectric anisotropy, and provides a liquid crystal display device containing this composition.Type: GrantFiled: August 20, 2010Date of Patent: March 19, 2013Assignees: JNC Corporation, JNC Petrochemical CorporationInventors: Takayoshi Yanai, Masayuki Saito