Including Fused Or Bridged Rings Patents (Class 252/299.62)
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Publication number: 20120314179Abstract: The present invention provides a method of producing a liquid crystalline coating liquid that substantially does not contain a fine crystal. The method of producing a liquid crystalline coating liquid of the present invention contains a heating step of heating a treatment liquid containing a lyotropic liquid crystalline compound containing an impurity, and a solvent, a depositing step of depositing a deposit by cooling the treatment liquid after the heating step to a temperature lower than 40° C., and a removing step of removing the deposit from the treatment liquid.Type: ApplicationFiled: May 19, 2011Publication date: December 13, 2012Applicant: NITTO DENKO CORPORATIONInventors: Shoichi Matsuda, Toru Umemoto, Tadayuki Kameyama
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Publication number: 20120305843Abstract: The invention relates to a liquid-crystalline medium which comprises at least one compound of the formula I, and to the use thereof for an active-matrix display, in particular based on the VA, PSA, PS-VA, PALC, FFS or IPS effect.Type: ApplicationFiled: January 31, 2011Publication date: December 6, 2012Applicant: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNGInventors: Melanie Klasen-memmer, Matthias Bremer, Konstantin Schneider
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Patent number: 8323527Abstract: The invention relates to novel fluorene derivatives, which are especially suitable for use in birefringent films with negative optical dispersion, to novel liquid crystal (LC) formulations and polymer films comprising them, and to the use of the fluorene derivatives, formulations and films in optical, electrooptical, electronic, semiconducting or luminescent components or devices.Type: GrantFiled: August 18, 2008Date of Patent: December 4, 2012Assignee: Merck Patent GmbHInventors: Kevin Adlem, Owain Llyr Parri, Karl Skjonnemand, David Wilkes
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Patent number: 8313669Abstract: The present invention relates to a liquid-crystal (LC) display of the PS (polymer stabilized) or PSA (polymer sustained alignment) type, and to polymerizable compounds and LC media for use in PS (polymer stabilized) and PSA displays.Type: GrantFiled: July 31, 2008Date of Patent: November 20, 2012Assignee: Merck Patent Gesellschaft mit Beschränkter HaftungInventors: Georg Bernatz, Andreas Taugerbeck
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Publication number: 20120286200Abstract: A liquid crystal compound having a high stability to heat, light or the like, a high clearing point, a low minimum temperature of a liquid crystal phase, a small viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy, a suitable elastic constant and an excellent compatibility with other liquid crystal compounds, and a liquid crystal composition including this compound, and a liquid crystal display device containing this composition. A compound represented by formula (1-1). In the formula, for example, R1 and R2 are alkyl having 1 to 10 carbons or alkoxy having 1 to 9 carbons; ring A1 and ring A2 are 1,4-cyclohexylene, 1,4-phenylene or 2,3-difluoro-1,4-phenylene; Z1 and Z2 are a single bond or —(CH2)2—; >W1—W2— and >W4—W3— are >CH—CH2— or >C?CH—; and m and n are 0, 1 or 2, and the sum of m and n is 1 or 2.Type: ApplicationFiled: May 10, 2012Publication date: November 15, 2012Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATIONInventor: Masahide KOBAYASHI
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Publication number: 20120286199Abstract: To provide a liquid crystal compound having general physical properties required for the compound, namely, a high stability to heat, light and so forth, a small viscosity, a refractive index anisotropy value having a suitable magnitude, a dielectric constant anisotropy value having a suitable magnitude and steep electro-optical characteristics, a wide temperature range of a nematic phase, and an excellent compatibility with other liquid crystal compounds, in particular, a liquid crystal compound having a wide temperature range of the nematic phase; the compound is represented by formula (1): wherein R is alkenyl having 2 to 20 carbons; ring A1 and ring A2 are independently 1,4-cyclohexylene, or 1,4-phenylene in which at least one of hydrogen may be replaced by fluorine; Z1 and Z2 are independently a single bond, —CH2CH2—, —CH?CH—, —CH2O— or —OCH2—; and n is 0 or 1.Type: ApplicationFiled: May 10, 2012Publication date: November 15, 2012Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATIONInventors: Teizi SATOU, Yasuyuki GOTO
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Patent number: 8304036Abstract: The invention relates to 2,5-selenophene derivatives and 2,5-tellurophene derivatives, inter alia for use as components in liquid-crystal mixtures, and to liquid-crystal mixtures which comprise the compounds, and to liquid-crystal displays based on these mixtures. The invention furthermore relates to processes for the preparation of the compounds and to Se/Te-containing intermediates.Type: GrantFiled: August 7, 2008Date of Patent: November 6, 2012Assignee: Merck Patent Gesellschaft Mit Beschrankter HaftungInventors: Axel Jansen, Detlef Pauluth, Melanie Klasen-Memmer
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Patent number: 8304035Abstract: The present invention relates to a liquid-crystal (LC) display of the PS (polymer stabilized) or PSA (polymer sustained alignment) type, and to polymerisable compounds and LC media for use in PS (polymer stabilized) and PSA displays.Type: GrantFiled: August 4, 2008Date of Patent: November 6, 2012Assignee: Merck Patent GmbHInventors: Georg Bernatz, Andreas Taugerbeck
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Patent number: 8303844Abstract: The present invention relates to benzo[f]chromene and pyrano[3,2-f]-chromene derivatives of the formula I in which L1, L2, R1, R2, A1, A2, Z1, Z2, m and n are as defined in claim 1, to the preparation thereof, to the use thereof as components in liquid-crystalline media, and to electro-optical display elements which contain the liquid-crystalline media according to the invention.Type: GrantFiled: November 3, 2008Date of Patent: November 6, 2012Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Axel Jansen, Melanie Klasen-Memmer
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Publication number: 20120256124Abstract: The present invention relates to dielectrically positive, preferably nematic, media comprising one or more polymerisable compounds of formula I in which the parameters have the meaning given in the text, to polymer-stabilised media obtained therefrom, to the use thereof in liquid-crystal displays, and to these displays, in particular PSA-IPS, PSA-FFS and PSA-positive VA displays.Type: ApplicationFiled: April 4, 2012Publication date: October 11, 2012Applicant: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNGInventors: Sayuri OHGIRI, Masahiko OKAMURA, Yasushi SUGIYAMA, Hideo ICHINOSE
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Patent number: 8283000Abstract: A liquid crystal composition includes 100 parts by mass of a nematic liquid crystal composition having negative dielectric anisotropy and 0.01 to 3 parts by mass of a polymerizable compound of general formula (I). On being irradiated with an energy ray, such as UV rays, the liquid crystal composition provides an LCD capable of high-speed response without undergoing reduction in reliability (voltage holding ratio). In formula (I), rings C1-3 are benzene, cyclohexane or naphthalene; M1-2 are hydrogen or methyl; Z1 is a direct bond, -L1-, -L1O—, etc.; Z4 is a direct bond, -L2-, —OL2-, etc.; at least one of Z1 and Z4 is not a direct bond; L1,2 are C1-C10 alkylene; when Z1?Z4, one or more hydrogen atoms of the rings C1, C2, and C3 are substituted; Z2 and Z3 are each a direct bond, an ester bond, etc.; p and q are each 0 or 1, provided that p+q?1.Type: GrantFiled: February 2, 2009Date of Patent: October 9, 2012Assignee: Adeka CorporationInventors: Ken Matsumoto, Masatomi Irisawa
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Publication number: 20120248375Abstract: A liquid composition containing a liquid crystal polyester, comprising (1) 15 to 40% by weight of a liquid crystal polyester, and (2) 60 to 85% by weight of a solvent containing N-methylpyrrolidone, wherein the liquid composition has a viscosity of 1.5 Pa·s or larger measured at 23° C., and the total of the liquid crystal polyester and the solvent is 100% by weight.Type: ApplicationFiled: March 21, 2012Publication date: October 4, 2012Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventor: Tomoko UEHARA
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Patent number: 8273264Abstract: Disclosed are novel liquid-crystal compounds, processes and intermediates for the preparation thereof, the use thereof for optical, electro-optical and electronic purposes, in particular in liquid-crystal (LC) media and LC displays, and to LC media and LC displays containing the same.Type: GrantFiled: January 15, 2010Date of Patent: September 25, 2012Assignee: Merck Patent Gesellschaft Mit Beschrankter HaftungInventors: Axel Jansen, Detlef Pauluth, Bernd Fiebranz, Bernhard Rieger
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Patent number: 8272879Abstract: The present invention provides a planar connector having excellent performances including flatness, warp-deformation resistance, and heat resistance, being capable of responding to shape changes in recent planar connectors. Specifically, the planar connector is composed of a composite resin composition comprises (A) a liquid crystalline polymer containing 55% by mole or less of p-hydroxy benzoic acid residue and having a melting point of 330° C. or higher, (B) a plate-like inorganic filler, and (C) a fibrous filler having a weight average fiber length within a range of 250 to 600 ?m, the amount of (B) component being 25 to 35% by weight to the total composition, the amount of (C) component being 10 to 25% by weight to the total composition, the sum in total of (B) component and (C) component being 40 to 50% by weight to the total composition, wherein the connector has a lattice structure inside an outer frame, and has an opening inside the lattice area, and wherein the pitch interval of the lattice area is 1.Type: GrantFiled: May 19, 2009Date of Patent: September 25, 2012Assignee: Polyplastics Co., Ltd.Inventors: Hiroki Fukatsu, Raita Nishikawa, Hirokazu Ohshiba, Seiji Kayukawa, Kazufumi Watanabe
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Patent number: 8273421Abstract: 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 specific compound having tertahydropyran-2,5-diyl as a first component and a specific four-ring compound having a high maximum temperature as a second component, and the liquid crystal display device contains this composition.Type: GrantFiled: September 24, 2009Date of Patent: September 25, 2012Assignees: JNC Corporation, JNC Petrochemical CorporationInventors: Masayuki Saito, Norikatsu Hattori
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Publication number: 20120236246Abstract: Provided is a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature of a 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 high stability to heat, or having a suitable balance regarding at least two of the characteristics. Also provided is an AM device having a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth. The liquid crystal composition contains a specific compound having a polymerizable group as a first component, a specific compound having a large negative dielectric anisotropy and a low minimum temperature as a second component, or a specific compound having a small viscosity or a large maximum temperature as a third component, and a liquid crystal display device contains the composition.Type: ApplicationFiled: December 22, 2010Publication date: September 20, 2012Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATIONInventors: Yoshimasa Furusato, Eriko Kurihara, Maiko Ito
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Publication number: 20120235091Abstract: The present invention provides a polarizing film having a high dichroic ratio. The polarizing film of the present invention contains an azo compound represented by the following general formula (1). In the general formula (1), the OH group is attached to the naphthalene ring at an ortho position relative to the azo group attached to the ring, R1 represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted acetyl group, a substituted or unsubstituted benzoyl group, or a substituted or unsubstituted phenyl group, M represents a counterion, m represents an integer of 0 to 2, n represents an integer of 0 to 6, at least one of m and n is not 0, and Q represents an anthraquinone ring having an OH group.Type: ApplicationFiled: March 14, 2012Publication date: September 20, 2012Applicant: NITTO DENKO CORPORATIONInventors: Sadahiro Nakanishi, Miyuki Kurogi, Hisae Shimizu, Satoru Suzuki
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Patent number: 8268190Abstract: A liquid crystal composition is disclosed, which includes a liquid crystal material having a negative dielectric constant anisotropy and at least two different kinds of reactive monomers. A proportion The amount of the at least two different kinds of the reactive monomers in the total weight of the liquid crystal composition is ranges from 0.05% to 10% by weight. Additionally, a liquid crystal display using the liquid crystal composition as well as methods and uses thereof are further provided.Type: GrantFiled: November 13, 2009Date of Patent: September 18, 2012Assignee: Chimei Innolux CorporationInventor: Fuh-Tsang Wu
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Patent number: 8268191Abstract: The present invention relates to dielectrically positive liquid-crystalline media comprising one or more compounds of the formula I in which the parameters have the meaning indicated in the specification, and optionally one or more compounds selected from the group of the compounds of the formulae II and III in which the parameters have the meaning indicated in the specification, and optionally one or more compounds of the formula IV in which the parameters have the meaning indicated in the specification, and to liquid-crystal displays containing these media, especially to active-matrix displays and in particular to TN, IPS and FFS displays.Type: GrantFiled: January 27, 2009Date of Patent: September 18, 2012Assignee: Merck Patent GmbHInventors: Markus Czanta, Harald Hirschmann, Michael Wittek, Volker Reiffenrath, Renate Bender, Christian Hock, Brigitte Schuler
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Publication number: 20120228549Abstract: Disclosed are a liquid-crystalline medium of negative dielectric anisotropy based on a mixture of polar compounds, which contains at least one compound of formula IA and at least one compound of formulae IB, IC and/or ID and the use thereof for an active-matrix display, in particular based on the ECB, PALO, FFS or IPS effect.Type: ApplicationFiled: May 22, 2012Publication date: September 13, 2012Applicant: MERCK PATENT GMBHInventors: Melanie KLASEN-MEMMER, Matthias BREMER
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Patent number: 8263188Abstract: Provided is a composition for a photo-alignment film includes a compound expressed by the following general formula (I) and a compound expressed by the following general formula (II):Type: GrantFiled: March 19, 2009Date of Patent: September 11, 2012Assignee: FUJIFILM CorporationInventor: Michitaka Matsuumi
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Patent number: 8257802Abstract: A coating liquid for forming a polarizing film comprising a lyotropic liquid crystal compound (A) exhibiting light absorption characteristics in a visible light region having a wavelength 400 nm or longer, a lyotropic liquid crystal compound (B) exhibiting no or low light absorption characteristics in the visible light region having a wavelength 400 nm or longer and a solvent dissolving the lyotropic liquid crystal compound (A) and the lyotropic liquid crystal compound (B).Type: GrantFiled: October 14, 2008Date of Patent: September 4, 2012Assignee: Nitto Denko CorporationInventors: Tetsuo Inoue, Shoichi Matsuda, Yuki Fukudome
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Patent number: 8257611Abstract: A compound of formula (1): wherein A1 and A2 are —O—, —NR—, —S—, or —CO—, in which R is a hydrogen atom or substituent; Z is one or two atoms selected from a carbon atom or a non-metal atom of Group 14, 15 or 16 in the Periodic Table, and forms a five- or six-membered ring with the C—C?C—C or C?C—C?C; R1, R2, and R3 each are a substituent; m is an integer of 0 to 4; L1 and L2 are a single bond or divalent linking group; X is a non-metal atom of Group 14, 15 or 16 in the Periodic Table, and may have a hydrogen atom or R4; and at least one of R, R1, R2, R3, and R4 is substituted with a polymerizable group; a liquid crystal composition, an optical film, a retardation sheet, a polarizing plate, and a liquid crystal display.Type: GrantFiled: December 14, 2007Date of Patent: September 4, 2012Assignee: FUJIFILM CorporationInventors: Shigeki Uehira, Michitaka Matsuumi, Shinichi Morishima, Mitsuyoshi Ichihashi, Kotaro Yasuda, Hiroshi Takeuchi
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Patent number: 8252201Abstract: The present invention relates to low viscosity, broad range nematic media having large birefringence and moderately large dielectric anisotropy. The nematic media are useful in a variety of electrooptical devices, including electronic lenses.Type: GrantFiled: November 9, 2009Date of Patent: August 28, 2012Assignee: Military University of TechnologyInventors: Roman Dabrowski, Jerzy Dziaduszek, Przemyslaw Kula
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Patent number: 8246855Abstract: A polymerizable liquid crystal composition is provided that has a wide range where a liquid crystal phase is exhibited, has excellent solubility in an organic solvent, and is facilitated in control of an alignment state. The use of the polymerizable liquid crystal composition provides a polymerizable liquid crystal composition that has good solubility in a solvent with high safety, such as PGMEA, and can control various alignment states. The polymerizable liquid crystal composition in one aspect contains a fluorenone derivative represented by the formula (1) and a compound having a bisphenol skeleton represented by the formula (2).Type: GrantFiled: August 31, 2009Date of Patent: August 21, 2012Assignees: JNC Corporation, JNC Petrochemical CorporationInventor: Yoshiharu Hirai
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Patent number: 8241522Abstract: The invention provides liquid crystalline blends, a device such as a photovoltaic cell using the blend and method thereof. A liquid crystalline blend comprises at least an electron donor and at least an electron acceptor with a weight or molar ratio in the range of from about 1:20 to about 20:1. Another liquid crystalline blend comprises at least an electron donor and at least an electron acceptor, wherein the electron donor, the electron acceptor, or both is (are) halo-substituted such as F-substituted. The donor or the electron acceptor can be excited by an electromagnetic radiation such as solar light to induce electron transfer between the donor and the acceptor. The photovoltaic cell is improved in that favorable molecular arrangement in the blend gives more interfaces between the donor and the acceptor and thus a viable path for dissociation and electrons and/or holes; as well as larger light-harvesting area toward the coming light.Type: GrantFiled: July 30, 2009Date of Patent: August 14, 2012Assignee: Kent State UniversityInventor: Quan Li
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Publication number: 20120200794Abstract: Disclosed is a liquid crystal composition formed by including a polymerizable compound represented by general formula (I) in a nematic liquid crystal composition with negative dielectric anisotropy (??). In the formula, ring C1 represents a benzene-1,2,4-triyl group, or the like; rings C2 to C4 represent a 1,4-phenylene group, a naphthalene-2,6-diyl group, or the like; M1 to M3 represent a hydrogen atom or a methyl group; Z1 and Z2 are a direct coupling, -L1-, -L1O—, -L1O—CO—, or the like; Z6 is a direct coupling, -L2-, -OL2-, —O-COL2-, or the like; at least one of Z1, Z2, and Z6 is not a direct coupling; L1 and L2 represent a C1-10 alkylene group; Z3 to Z5 represent a direct coupling, an ester bond, or the like; and p, q, and r are 0 or 1, wherein 1?p+q+r?3.Type: ApplicationFiled: October 19, 2010Publication date: August 9, 2012Applicant: ADEKA CORPORATIONInventors: Ken Matsumoto, Masatomi Irisawa
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Publication number: 20120193577Abstract: The invention provides a liquid crystal compound having a high stability to heat, light or the like, a wide temperature range of a nematic phase, a small viscosity, a suitable optical anisotropy, a large elastic constant K33, a large negative dielectric anisotropy and an excellent compatibility with other liquid crystal compounds. The invention provides a liquid crystal composition having characteristics similar to these of the compound. The invention provides a liquid crystal display device having a short response time, low electric power consumption, a low driving voltage, a large contrast and a wide temperature range in which the device can be used. The compound is a 2,3-difluorobenzene derivative (1) having a combination of a cyclohexane ring, a cyclohexene ring or a benzene ring phenyl and a butene bonding group. The liquid crystal composition includes this compound, and the liquid crystal display device contains this composition.Type: ApplicationFiled: January 27, 2012Publication date: August 2, 2012Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATIONInventor: Masahide KOBAYASHI
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Patent number: 8231807Abstract: A liquid-crystalline polyester blend composition includes 100 parts by weight of a liquid-crystalline polyester blend and 0.1-300 parts by weight of calcium titanate and/or barium titanate, wherein the liquid-crystalline polyester blend can be obtained by combining liquid-crystalline polyester (A) (LCP A) and liquid-crystalline polyester (B) (LCP B) such that the ratio by weight of (LCP A)/(LCP B) is 99/1 to 80/20, wherein LCP A and LCP B are as defined in the specification, provided that at least one of LCP A and LCP B includes one or two repeating units that come from corresponding minor copolymerizing components selected from aromatic diol, aromatic dicarboxylic acid, aromatic monocarboxylic acid and aromatic monohydroxy compound.Type: GrantFiled: June 15, 2010Date of Patent: July 31, 2012Assignee: Ueno Fine Chemicals Industry, Ltd.Inventors: Satoru Yonezawa, Motoki Asahara
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Patent number: 8231806Abstract: The present invention relates to dielectrically positive liquid-crystalline media comprising in each case one or more compounds of the formula I in which the parameters have the respective meanings indicated in the specification, and optionally one or more further dielectrically positive compounds and optionally one or more further dielectrically neutral compounds, and to liquid-crystal displays containing these media, especially to active-matrix displays and in particular to TN, IPS and FFS displays.Type: GrantFiled: February 25, 2009Date of Patent: July 31, 2012Assignee: Merck Patent Gesellschaft mit beschränkter HaftungInventors: Markus Czanta, Michael Wittek, Lars Lietzau, Marcus Reuter, Brigitte Schuler
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Patent number: 8216489Abstract: The invention provides a liquid crystal compound represented by the following formula having stability to heat, light and so forth, a wide temperature range of a nematic phase, a small viscosity, a large optical anisotropy and a suitable elastic constant K33 (K33: bend elastic constant), and further having a suitable and negative dielectric anisotropy and an excellent compatibility with other liquid crystal compounds, and provides a liquid crystal composition including the compound, wherein R1 and R2 are hydrogen, alkyl or the like, ring A1 is trans-1,4-cyclohexylene, 1,4-phenylene or the like, L1 to L4 are hydrogen or fluorine, and at least three of them are fluorine; when the ring A1 is trans-1,4-cyclohexylene or the like, Z1 is a single bond, —(CH2)2— or the like, when ring A1 is 1,4-phenylene, Z1 is —(CH2)2— or the like.Type: GrantFiled: March 25, 2009Date of Patent: July 10, 2012Assignees: JNC Corporation, Chisso Petrochemical CorporationInventor: Masahide Kobayashi
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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: 8211512Abstract: 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. The invention provides a liquid crystal composition having a negative dielectric anisotropy that contains a specific compound having a negatively large dielectric anisotropy as a first component, and a specific two-ring compound having a low viscosity as a second component, and provides a liquid crystal display device containing the composition.Type: GrantFiled: June 18, 2010Date of Patent: July 3, 2012Assignees: JNC Corporation, Chisso Petrochemical CorporationInventor: Masayuki Saito
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Publication number: 20120162595Abstract: The present invention relates to the use of LC (liquid-crystal) compounds and LC media comprising them in LC displays of the PS (polymer stabilised) or PSA (polymer sustained alignment) type.Type: ApplicationFiled: August 13, 2010Publication date: June 28, 2012Inventors: Seung-Eun Lee, Eun Young Kim, Dong-Mee Song, Eun-Kyu Lee
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Publication number: 20120161073Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds having negative dielectric anisotropy, which contains at least one compound of the formula I and at least one compound of the formula II in which R1, R2, R3, R4, ring A, Z1, Z2 and m are as defined in Claim 1, and to the use thereof for an active-matrix display based on the ECB, VA, PS-VA, FFS, PALO or IPS effect.Type: ApplicationFiled: February 29, 2012Publication date: June 28, 2012Applicant: Merck Patent Gesellschaft Mit Beschrankter HaftungInventors: Norihiko TANAKA, Makoto Murakami, Shinji Nakajima
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Patent number: 8206795Abstract: A liquid crystal composition is provided that satisfies at least one characteristic among the 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, negatively large dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or is properly balanced regarding at least two characteristics. An AM device is provided that has a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth. The liquid crystal composition contains tetrahedropyrene-2,5-diyl as the first component, a specific compound having negatively large dielectric anisotropy as the second component, and a negatively dielectric anisotropy. The liquid crystal display device contains the liquid crystal composition.Type: GrantFiled: August 24, 2009Date of Patent: June 26, 2012Assignees: JNC Corporation, Chisso Petrochemical CorporationInventors: Masayuki Saito, Norikatsu Hattori
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Patent number: 8206610Abstract: A liquid crystal composition is provided 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 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 at least two of the characteristics. The crystal liquid display device using the composition is suitable for 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, and can be used for a liquid crystal projector, a liquid crystal television and so forth.Type: GrantFiled: July 23, 2009Date of Patent: June 26, 2012Assignees: JNC Corporation, Chisso Petrochemical CorporationInventors: Norikatsu Hattori, Masayuki Saito
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Publication number: 20120153224Abstract: The present invention provides a wholly aromatic liquid-crystalline polyester resin, consisting of the repeating units shown by the formulae [I]-[V]: wherein p, q, r, s and t represent molar proportion (mol %) of repeating units respectively in the liquid-crystalline polyester resin and satisfy the following formulae: 25?p?45; 2?q?10; 10?r?20; 10?s?20; 20?t?40; r>s; p+q+r+s+t=100; having a ratio P1/P2 of equal to or lower than 3.0, wherein P1 is a melt viscosity at a crystalline melting temperature measured under the condition of shear rate 1000 sec?1 and P2 is a melt viscosity at a temperature of the crystalline melting temperature +20° C. measured under the same condition as P1; and having a deflection temperature under load (DTUL) of equal to or higher than 230° C.Type: ApplicationFiled: December 15, 2011Publication date: June 21, 2012Applicant: UENO FINE CHEMICALS INDUSTRY, LTD.Inventors: Satoru YONEZAWA, Hisanari FUJIWARA, Tetsuhide SAWADA
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Patent number: 8202584Abstract: Disclosed are a dielectrically negative, liquid-crystalline medium which contains a (first) dielectrically negative component (component A), which contains one or more dielectrically negative compounds of formula I and a further (second) dielectrically negative component (component B), and the use thereof in an electro-optical display, particularly in an active-matrix display based on the VA, ECB, PS-VA, FFS or IPS effect, and displays of this type.Type: GrantFiled: April 5, 2010Date of Patent: June 19, 2012Assignee: Merck Patent GmbHInventors: Melanie Klasen-Memmer, Axel Jansen, Detlef Pauluth
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Publication number: 20120145959Abstract: A compound represented by the formula (1) is provided. In the formula (1), for example, R1 and R2 are alkyl having 1 to 10 carbons, alkoxy having 1 to 9 carbons or alkenyl having 2 to 10 carbons; the ring A and the ring B are 1,4-cyclohexylene or 1,4-phenylene; Z1 and Z2 are a single bond and Z3 is —CH2O— or —OCH2—; Y1 and Y2 are halogen, —CF3, —CHF2, —CH2F, —OCF3, —OCHF2 or —OCH2F; and m and n is 0, 1 or 2, p is 1 or 2, and the sum of m, n and p is 1, 2 or 3.Type: ApplicationFiled: August 9, 2010Publication date: June 14, 2012Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATIONInventor: Tokifumi Masukawa
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Patent number: 8197710Abstract: A polymerizable compound represented by general formula (1): wherein Z1 and Z2 each represent a (meth)acryloyloxy group; X1 and X2 each independently represent a single bond, an optionally branched alkylene group having 1 to 8 carbon atoms, an ether linkage, —COO—, —OCO—, —OCOO—, a 6-membered ring optionally having a substituent, or a combination thereof; R1 represents —R?, —OR?, —CO—R?, or —OCO—R?; R? represents a halogen atom, an optionally branched alkyl group having 1 to 8 carbon atoms, or a 6-membered ring optionally having a substituent, L1 and L2 each independently represent a member selected from a single bond, —CH2CH2—, —CH?CH—, —C?C—, —CH2O—, —OCH2—, —COO—, and —OCO—; m represents an integer of 1 to 4; and the R1's may be the same or different.Type: GrantFiled: October 9, 2007Date of Patent: June 12, 2012Assignee: Adeka CorporationInventors: Rieko Hamada, Masatomi Irisawa, Kiyoshi Murata
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Publication number: 20120132854Abstract: A LC compound and a LC mixture are provided. The LC mixture includes a compound represented by (I) and at least one compound selected from a group consisting of compounds represented by (II) to (IV): in which X1 is F, —Cl, —CF3, or —OCF3; R, R11, and R12 are independently H, a C1-C15 alkyl group, or a C2-C15 alkenyl group; A1 is 1,4-phenylene; A11, A12, A13, and A14 are independently selected from a group consisting of 1,4-phenylene, 1,4-cyclohexylene, and 2,5-tetrahydropyranylene; at least one of A2, A3, and A4 is 2,5-indanylene, and the others are independently selected from a group consisting of 1,4-phenylene, 1,4-cyclohexylene, and 2,5-tetrahydropyranylene; L1 is —F2CO—; Z11, Z12, and Z13 are independently a single bond, —O—, —F2CO—, or —COO—; m is 1; n, o and p are independently 0, 1, 2 or 3, and n+o+p?3.Type: ApplicationFiled: March 17, 2011Publication date: May 31, 2012Applicants: JIANGSU HECHENG CHEMICAL MATERIALS CO., LTD., DAXIN MATERIALS CORPORATIONInventors: Chun-Chih Wang, Wen-Chung Chu, Ren-Jie Chiou, Shi-Zhi You, Hong-Wei Zhang, Yu-Dong Tan
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Patent number: 8189165Abstract: A liquid-crystalline coating fluid comprises: a lyotropic liquid crystal compound; a vinyl alcohol-based polymer; and a solvent, wherein 0.05 to 1.5 weight parts of vinyl alcohol-based polymer is contained with respect to 100 weight parts of the lyotropic liquid-crystal compound.Type: GrantFiled: November 18, 2008Date of Patent: May 29, 2012Assignee: Nitto Denko CorporationInventors: Toru Umemoto, Toshimasa Nishimori, Tadayuki Kameyama
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Patent number: 8187494Abstract: The invention provides a liquid crystal compound having stability to heat, light and so forth, a wide temperature range of a nematic phase, a small viscosity, a suitable optical anisotropy, and a suitable elastic constant K33, and further having a suitable and negative dielectric anisotropy and an excellent compatibility with other liquid crystal compounds, and a liquid crystal composition having stability to heat, light and so forth, a low viscosity, a large optical anisotropy, a suitable and negative dielectric anisotropy, and a suitable elastic constant K33, a low threshold voltage, a high maximum temperature (phase-transition temperature on a nematic phase-isotropic phase) of a nematic phase, and a low minimum temperature of the nematic phase. The liquid crystal compound which has a specific structure having fluorine at a lateral position and also having phenylene in which hydrogen on the benzene ring is replaced by fluorine, and a liquid crystal composition containing the compound are prepared.Type: GrantFiled: August 26, 2008Date of Patent: May 29, 2012Assignees: JNC Corporation, Chisso Petrochemical CorporationInventors: Masahide Kobayashi, Teru Shimada
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Patent number: 8182716Abstract: Disclosed is a novel liquid crystal compound, a liquid crystal composition comprising the same, and an optical film using the same liquid crystal composition. More particularly, there is provided a liquid crystal material of a viewing angle compensation film with high quality characteristics, which can improve a contrast ratio and minimize variations in color with viewing angles in a black state, a liquid crystal composition comprising the same liquid crystal material, and a compensation film obtained from the same liquid crystal composition.Type: GrantFiled: January 22, 2008Date of Patent: May 22, 2012Assignee: LG Chem, Ltd.Inventors: Jae-Ho Cheong, Min-Jin Ko, Myung-Sun Moon, Bum-Gyu Choi, Dae-Ho Kang, Ki-Youl Lee, Yun-Bong Kim
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Patent number: 8182717Abstract: A liquid crystal composition is provided that satisfies at least one of the 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 dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or is properly balanced regarding at least two characteristics. An AM device is provided that has a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth. The liquid crystal composition having a negative dielectric anisotropy contains a first component having especially negatively large dielectric anisotropy, a second component having a large negative dielectric anisotropy and a low minimum temperature, a third component having a high maximum temperature or a small viscosity. The liquid crystal display device contains the liquid crystal composition.Type: GrantFiled: March 25, 2009Date of Patent: May 22, 2012Assignees: JNC Corporation, Chisso Petrochemical CorporationInventor: Masayuki Saito
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Publication number: 20120119142Abstract: A liquid crystalline polyester has a specifically high fluidity, a low anisotropy, a high toughness, a low gas property, an excellent heat resistance and a high dielectric breakdown resistance. The liquid crystalline polyester includes 38 to 74 mol % of structural unit(s) obtained from a hydroxycarboxylic acid, 31 to 13 mol % of a structural unit obtained from 4,4?-dihydroxybiphenyl and 31 to 13 mol % of a structural unit obtained from 2,6-naphthalenedicarboxylic acid (100 mol % in total), characterized in that the hydroxycarboxylic acid structural units include a structural unit obtained from 2-hydroxy-6-naphthoic acid in an amount of 89 mol % or more and the average sequence length of the structural unit obtained from 2-hydroxy-6-naphthoic acid is 0.1 to 1.Type: ApplicationFiled: August 11, 2009Publication date: May 17, 2012Applicant: TORAY INDUSTRIES, INC.Inventors: Keiko Osato, Koji Tachikawa, Hideyuki Umetsu
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Publication number: 20120123074Abstract: The present invention provides an optical anisotropic material having a good light stability, and provides a di(meth)acrylate compound represented by the following formula (1) and a polymerizable liquid crystalline composition that are suitable for the production of the optical anisotropic material. Further, the present invention provides an optical element having a good light stability and an optical information writing/reading device using the same.Type: ApplicationFiled: January 5, 2012Publication date: May 17, 2012Applicant: Asahi Glass Company, LimitedInventors: Satoshi OKADA, Makoto Hasegawa, Hiroshi Kumai, Hiromichi Nagayama
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Patent number: 8178173Abstract: A TBA-liquid crystal display panel including a liquid crystal medium with positive dielectric anisotropy, wherein the liquid crystal medium includes, in 100% by weight of the liquid crystal compounds identified by the compounds recited in formulas I through IX below: wherein, R1, R3, R3*, R5, R6, R7, R8, and R9 independently denote C2-5 linear alkyl, preferably propyl or pentyl, R2 denote C4-6 linear alkyl, preferably butyl or pentyl; and R4 denotes C1-3 linear alkyl, preferably methyl.Type: GrantFiled: December 6, 2010Date of Patent: May 15, 2012Assignees: Sharp Kabushiki Kaisha, Merck Patent GmbHInventors: Toshihiro Matsumoto, Mitsuhiro Murata, Yuichi Kawahira, Masayuki Kanehiro, Takanori Takeda, Norihiro Tanaka, Hideo Ichinose
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Publication number: 20120105791Abstract: A system having a vertically-aligned negative delta E nematic liquid crystal host material and a small amount of liquid crystal polymer is provided. The liquid crystal polymer improves the switching speed of a vertically aligned nematic system without sacrificing contrast or viewing angle.Type: ApplicationFiled: July 29, 2011Publication date: May 3, 2012Inventors: Julia A. Kornfield, Michael Wand, Zuleikha Kurji