Benzene Rings Linked By Direct Bond Patents (Class 252/299.66)
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Patent number: 8337719Abstract: The present invention provides a resin composition containing a liquid crystalline polyester and a high dielectric material filler. The present invention also provides a molded article of the liquid crystalline polyester resin composition. The liquid crystalline polyester resin composition of the present invention comprises 50 to 80% by volume of a liquid crystalline polyester which has 40% by mol or more of a 2,6-naphthalenediyl group as an aromatic group, also has a flow initiation temperature of 280° C. or higher, and shows a melt tension of 1 g or more measured at a temperature higher than flow initiation temperature; and 20 to 50% by volume of a high dielectric material filler. The liquid crystalline polyester resin composition can be formed into composition pellets easily and stably by a strand method, and a molded article obtained from the liquid crystalline polyester resin composition is excellent in flexural strength and dielectric characteristics.Type: GrantFiled: December 2, 2008Date of Patent: December 25, 2012Assignee: Sumitomo Chemical Company, LimitedInventors: Tomoya Hosoda, Tomoko Uehara, Satoshi Okamoto
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Patent number: 8333906Abstract: The instant invention relates to mesogenic systems comprising a) a polymeric component, component A, obtained or obtainable from polymerization of a precursor comprising one or more mesogenic mono-reactive compounds, one or more di-reactive compounds, which optionally are also mesogenic compounds and optionally a photo-initiator and a low molecular weight component, component B, comprising one or more mono-reactive, mesogenic compounds, one or more mesogenic compounds and one or more chiral dopants, exhibiting a Blue Phase, as well as to the use of these systems in deices and to these devices.Type: GrantFiled: June 25, 2010Date of Patent: December 18, 2012Assignee: Merck Patent GmbHInventors: Cecile Schott, John Patrick, Kevin Adlem, Louise Diane Farrand, Georg Bernatz, Achim Goetz, Peter Best, Herbert Plach
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Publication number: 20120313041Abstract: 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 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): for example, R1 is alkyl having 1 to 10 carbons; ring A1, ring A2 and ring A3 are 1,4-cyclohexylene, 1,4-phenylene or 1,4-phenylene in which at least one of hydrogen has been replaced by fluorine; Z1 is a single bond, and Z2 and Z3 are —CF2O— or —OCF2—; X1 is fluorine; and L1 and L2 are fluorine.Type: ApplicationFiled: June 6, 2012Publication date: December 13, 2012Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATIONInventors: Takahiro KUBO, Yasuyuki GOTO
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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: 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: 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: 8304037Abstract: A liquid crystal compound having general physical properties necessary for a liquid crystal compound, a high stability to heat, light or the like, a small viscosity, a suitable refractive index anisotropy, a suitable dielectric anisotropy and steep electro-optic characteristics, a wide temperature range of a nematic phase and an excellent compatibility with other liquid crystal compounds, and a liquid crystal compound especially having a wide temperature range of a nematic phase. A compound represented by formula (1). with, for example, R1 and R2 are alkyl having 1 to 10 carbons; A1 is 1,4-cyclohexylene; A2 is 2,3-difluoro-1,4-phenylene; X is fluorine or chlorine; Z1 and Z2 are a single bond; and p and q is 0 or 1.Type: GrantFiled: May 24, 2011Date of Patent: November 6, 2012Assignees: JNC Corporation, JNC Petrochemical CorporationInventor: Tomohiro Yano
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Patent number: 8298632Abstract: The invention provides a liquid crystal compound having a suitable value of refractive index anisotropy, a suitable value of dielectric anisotropy, steep characteristics electro-optic characteristics, a wide temperature range of a nematic phase and an excellent compatibility with other liquid crystal compounds, and a liquid crystal compounds especially having a wide temperature range of a nematic phase. A compound represented by formula (1). For example, R1 and R2 are each independently alkyl having 1 to 9 carbons or alkenyl having 2 to 9 carbons, alkoxy having 1 to 8 carbons or alkenyloxy having 2 to 8 carbons; Q1 and Q4 are each independently fluorine or chlorine; Q2 and Q3 are each independently hydrogen, fluorine or chlorine, and one of Q2 and Q3 is hydrogen; Z is —CH2 O— or —COO—; and h is 1 or 2.Type: GrantFiled: January 27, 2010Date of Patent: October 30, 2012Assignees: JNC Corporation, JNC Petrochemical CorporationInventors: Teru Shimada, Junichi Yamashita
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Publication number: 20120267571Abstract: The present invention relates to compounds of the formula I where one or more of the radicals A1-5 denote a 1,4-naphthylene or 1,4- or 9,10-anthracenylene radical, and the other parameters are as defined in Claim 1. The invention additionally includes liquid-crystalline media which comprise the title compounds, and components for high-frequency technology which comprise these media, in particular phase shifters and microwave array antennae.Type: ApplicationFiled: October 6, 2010Publication date: October 25, 2012Applicant: Merck Patent Gesellschaft Mit Beschrankter HaftungInventors: Christian Jasper, Elvira Montenegro, Detlef Pauluth, Volker Reiffenrath, Atsutaka Manabe
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Patent number: 8293341Abstract: Provided is a cellulose ester film including a polycondensed ester which is obtained from a mixture containing an aromatic dicarboxylic acid, an aliphatic dicarboxylic acid, an aliphatic diol having an average carbon atom number of from 2.0 to 3.0 and a monocarboxylic acid, and both terminals of which are a monocarboxylic acid ester derivative.Type: GrantFiled: May 15, 2009Date of Patent: October 23, 2012Assignee: FUJIFILM CorporationInventors: Mamoru Sakurazawa, Yasuo Mukunoki, Akihiro Matsufuji, Hiroaki Sata
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Patent number: 8293134Abstract: An optically anisotropic material having a good durability against light is provided. Further, an optical element having a good durability against light and an optical information writing/reading device employing such an element are provided. The optically anisotropic material is obtainable by polymerizing a polymerizable liquid crystal composition containing at least 5 mol % of at least one type of polymerizable compound represented by a general formula CH2?CR1—COO—K-Cy-Cy-L-OCO—CR2?CH2. A phase difference plate 4 produced by employing the optically anisotropic material has a good durability against light, and accordingly, the phase difference plate 4 can realize an optical heat device suitable for large capacity writing/reading by employing a blue laser as a light source 1.Type: GrantFiled: December 28, 2010Date of Patent: October 23, 2012Assignee: Asahi Glass Company, LimitedInventors: Satoshi Okada, Hiroshi Kumai, Makota Hasegawa
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Publication number: 20120261615Abstract: The present invention relates to a device for high-frequency technology, or for the microwave region and millimetre wave region of the electromagnetic spectrum, characterised in that it contains a liquid-crystal medium which consists of one or more compounds, which one or more compounds, which contain 6 to 15 five-, six- or seven-membered rings, preferably 1,4-linked phenylene rings, or in that it contains a liquid-crystal medium which itself comprises a component A, which itself consists of one or more of the said compounds, which one or more compounds, which contain 6 to 15 five-, six- or seven-membered rings, preferably 1,4-linked phenylene rings. The present invention additionally relates to compounds of the formula (I), in which the parameters have the meanings given in the text, and to the corresponding, novel liquid-crystal media, to the use and preparation thereof, and to the production and use of the devices.Type: ApplicationFiled: November 16, 2010Publication date: October 18, 2012Applicant: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNGInventors: Atsutaka Manabe, Christian Jasper, Volker Reiffenrath, Elvira Montenegro, Detlef Pauluth
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Publication number: 20120262661Abstract: A liquid crystal composition according to an exemplary embodiment of the present invention includes a liquid crystal compound represented by a below chemical formula (I) at about 10 wt % to about 15 wt %; and at least one liquid crystal compound at about 3 wt % to about 8 wt % among liquid crystal compounds represented by chemical formula (II) to chemical formula (IV). Here, X and Y may be equal to each other or different from each other, and each is an alkyl group or an alkenyl group having a carbon number of 1 to 4.Type: ApplicationFiled: September 20, 2011Publication date: October 18, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Si-Heun KIM, Seong-Nam LEE, Duck-Jong SUH, Ji-Eun JANG, Jae-Weon HUR
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Publication number: 20120261616Abstract: 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 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: ApplicationFiled: November 29, 2010Publication date: October 18, 2012Applicant: Merck Patent Gesellschaft Mit Beschrankter HaftungInventors: Markus Czanta, Harald Hirschmann, Sven Baran, Lars Lietzau
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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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Patent number: 8283001Abstract: Disclosed is a liquid crystal composition suitable for producing a liquid crystal electrooptical element which can be driven at a low voltage in a wide temperature range and has high display quality. Also disclosed is a liquid crystal electrooptical element produced by using the liquid crystal composition. Further disclosed is a liquid crystal compound useful in preparing this composition.Type: GrantFiled: May 2, 2011Date of Patent: October 9, 2012Assignee: AGC Seimi Chemical Co., Ltd.Inventors: Atsushi Kawamata, Tomoyuki Asai, Hidemasa Koh
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Patent number: 8277684Abstract: The invention relates to a liquid-crystalline medium of negative dielectric anisotropy based on a mixture of polar compounds, which comprises at least one compound selected from the group of the compounds of the formulae IA, IB and IC in which R1A, R2A, R1B, R2B, R1C, R2C, L, m, n, o, p and b have the meanings indicated in Claim 1, and to the use thereof for an active-matrix display, in particular based on the ECB, PALC, FFS or IPS effect.Type: GrantFiled: August 7, 2008Date of Patent: October 2, 2012Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Melanie Klasen-Memmer, Matthias Bremer, Kazuaki Tarumi
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Patent number: 8277907Abstract: The present invention relates to a liquid-crystalline medium based on a mixture of polar compounds having negative dielectric anisotropy (??), which is distinguished by the fact that it has a value for the ratio ?1/?n2 in the range 6-45 with a clearing point of >60° C. and a ?? of ??2.3. Media of this type are particularly suitable for electro-optical displays having active-matrix addressing based on the ECB, PA LCD, FFS or IPS effect.Type: GrantFiled: June 28, 2011Date of Patent: October 2, 2012Assignee: Merck Patent GmbHInventors: Melanie Klasen-Memmer, Sabine Schoen
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Publication number: 20120241671Abstract: Provided is 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 dielectric anisotropy, a large specific resistance, a large elastic constant, a high stability to ultraviolet light and a 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 large elastic constant as a first component, and a specific compound having a large dielectric anisotropy as a second component, and has a nematic phase, and a liquid crystal display device contains the composition.Type: ApplicationFiled: November 1, 2010Publication date: September 27, 2012Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATIONInventors: Norikatsu Hattori, Takashi Hiraoka, Taketo Maeda, Masayuki Saito
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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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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: 8273420Abstract: Disclosed is a liquid crystal composition suitable for producing a liquid crystal electrooptical element which can be driven at a low voltage in a wide temperature range and has high display quality. Also disclosed is a liquid crystal electrooptical element produced by using the liquid crystal composition. Further disclosed is a liquid crystal compound represented by the formula [R1-(A1)a-Z1-(A2)b-Z2-(A7)e-Z5-A3-CF?CFCF2O-A4-Z3-(A5)c-Z4-(A6)d-R2].Type: GrantFiled: May 2, 2011Date of Patent: September 25, 2012Assignee: AGC Seimi Chemical Co., Ltd.Inventors: Atsushi Kawamata, Tomoyuki Asai, Hidemasa Koh
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Patent number: 8259273Abstract: A liquid crystal includes about 60 wt % to about 80 wt % of a first compound material, about 2 wt % to about 15 wt % of a second compound material, and a neutral compound material. The first compound material has a dielectric anisotropy of a first polarity, and the second compound material has a dielectric anisotropy of a second polarity.Type: GrantFiled: March 28, 2011Date of Patent: September 4, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Hyun-Wuk Kim, Jae-Jin Lyu, Yong-Kuk Yun
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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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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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Patent number: 8236197Abstract: The subject is to provide a liquid crystal composition that satisfies at least one characteristic 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 two characteristics thereof. The subject 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.Type: GrantFiled: July 23, 2009Date of Patent: August 7, 2012Assignees: JNC Corporation, JNC Petrochemical CorporationInventors: Shigeru Kibe, Masayuki Saito
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Patent number: 8236390Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds, characterized in that it comprises one or more compounds of the formula I in which R1, X1, L1-5 have the meanings indicated in Claim 1, and to the use thereof for electro-optical purposes, in particular TN monitor applications.Type: GrantFiled: December 17, 2008Date of Patent: August 7, 2012Assignee: Merck Patent Gesellschaft mit beschränkter HaftungInventors: Harald Hirschmann, Michael Wittek, Sabine Schoen
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Publication number: 20120181479Abstract: 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 negative dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light, a high stability to heat and a short helical pitch is provided, wherein the liquid crystal composition has a negative dielectric anisotropy and contains a specific optically active compound as a first compound, a specific compound having a large negative dielectric anisotropy as a second component, and may contain a specific compound having a high maximum temperature or a small viscosity as a third component, a specific compound having a large negative dielectric anisotropy as a fourth component and a specific optically active compound as a fifth component, and a liquid crystal display device that contains the composition.Type: ApplicationFiled: September 1, 2010Publication date: July 19, 2012Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATIONInventors: Yoshimasa Furusato, Takashi Hiraoka, Masayuki Saito
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Publication number: 20120168677Abstract: A liquid crystal compound represented by formula (1-1). For example, R1 and R2 are independently hydrogen, alkyl having 1 to 10 carbons, alkenyl having 2 to 10 carbons, alkoxy having 1 to 9 carbons, alkoxyalkyl having 2 to 9 carbons or alkenyloxy having 2 to 9 carbons; the ring A1 is trans-1,4-cyclohexylene, 1,4-cyclohexenylene, 1,3-dioxane-2,5-diyl, pyrimidine-2,5-diyl or pyridine-2,5-diyl; L1 and L2 are independently hydrogen or fluorine, and at least one of them is fluorine; and Z1, Z2 and Z3 are independently a single bond, —(CH2)2—, —CH?CH—, —C?C—, —CH2O—, —OCH2—, —COO— or —OCO—.Type: ApplicationFiled: September 2, 2010Publication date: July 5, 2012Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATIONInventors: Masahide Kobayashi, Junichi Yamashita
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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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Patent number: 8211513Abstract: The present invention relates to liquid-crystalline compounds having at least three fluorine-substituted benzene rings, a terminal trifluoromethyl group and at least one —CF2O— bridge. The invention also relates to liquid-crystalline media prepared therewith and to liquid-crystal display devices (LC displays) containing these media.Type: GrantFiled: March 22, 2011Date of Patent: July 3, 2012Assignee: Merck Patent Gesellschaft mit Beschrankter HaftungInventors: Axel Jansen, Helmut Haensel, Philipp Krattiger, Andreas Taugerbeck, Malgorzata Rillich
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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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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: 8202448Abstract: A liquid-crystalline polyester resin composition is provided including a liquid-crystalline polyester obtained by polymerizing monomers of an aromatic hydroxycarboxylic acid in the presence of an imidazole compound. The composition also includes a mica which is a muscovite and has a volume average particle diameter of 40 ?m or less and a specific surface area of 6 m2/g or less, the amount of the mica being 15 to 100 parts by weight based on 100 parts by weight of the liquid-crystalline polyester. The liquid-crystalline polyester resin composition has melt fluidity sufficient to be molded into a connector having an ultra-thin wall thickness portion. The resulting connector has sufficiently suppressed warp and sufficient soldering resistance.Type: GrantFiled: December 23, 2009Date of Patent: June 19, 2012Assignee: Sumitomo Chemical Company, LimitedInventors: Yoshiyuki Fukuhara, Hiroyasu Yamauchi
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Patent number: 8197709Abstract: The present invention relates to chemical compounds containing five or more benzene rings arranged in a linear manner and two bridging units between these rings, where at least one of these units represents a —CF2O— bridge. The invention additionally relates to liquid-crystalline media and to high-frequency components comprising these media, in particular antennae, especially for the gigahertz range.Type: GrantFiled: November 3, 2010Date of Patent: June 12, 2012Assignee: Merck Patent Gesellschaft mit berschrankter HaftungInventors: Lars Lietzau, Werner Binder, Atsutaka Manabe, Helmut Haensel
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Publication number: 20120138853Abstract: A liquid crystal composition for forming a polymer/liquid crystal composite in which disorder of an orientation state is reduced is provided. The liquid crystal composition includes a liquid crystal material exhibiting a blue phase and a liquid crystalline monomer represented by the following general formula (G1). Note that the liquid crystal composition may include a non-liquid-crystalline monomer and a polymerization initiator. In the general formula (G1), X represents a mesogenic skeleton; and Y1 and Y2 individually represent an alkylene group having a sum of carbon atoms and/or oxygen atoms of 1 to 20. Also in the general formula (G1), the alkylene group and the alkyl group may include a carbonyl group and may have an ether bond. In addition, the carbonyl group and the ether bond may form an ester structure. In the general formula (G1), Z1 and Z2 individually represent an acryloyl group or a methacryloyl group.Type: ApplicationFiled: November 29, 2011Publication date: June 7, 2012Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Daisuke KUBOTA, Sachiko KAWAKAMI, Makoto IKENAGA, Takahiro YAMAMOTO
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Publication number: 20120132855Abstract: To provide a liquid crystal composition exhibiting a blue phase, which enables higher contrast, and a liquid crystal display device including the liquid crystal composition. The liquid crystal composition contains a chiral agent and liquid crystal containing a compound having three electron-withdrawing groups as end groups of a structure where a plurality of rings including at least one aromatic ring is linked to each other directly or with a linking group laid therebetween. The peak of the diffracted wavelength on the longest wavelength side in the reflectance spectrum of the liquid crystal composition is less than or equal to 450 nm, preferably less than or equal to 420 nm. Further, a liquid crystal display device can be provided using the liquid crystal composition.Type: ApplicationFiled: November 18, 2011Publication date: May 31, 2012Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Tetsuji Ishitani, Sachiko Kawakami, Yuko Kawata, Manabu Kobayashi, Momoko Kato, Satoshi Seo
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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: 8182885Abstract: 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 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. A liquid crystal composition having a nematic phase, wherein the first component contains a specific five ring compound having a large optical anisotropy and a large dielectric anisotropy, the second component contains a specific compound having a small viscosity, and the third component contains a specific four ring compound having a high maximum temperature.Type: GrantFiled: August 20, 2008Date of Patent: May 22, 2012Assignees: JNC Corporation, Chisso Petrochemical CorporationInventors: Masayuki Saito, Shigeru Kibe
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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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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
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Patent number: 8168083Abstract: The present invention relates to an electro-optical light-modulation element of the FFS type, and to electro-optical displays and display systems, such as, for example, television screens and computer monitors, which contain elements of this type. The light-modulation elements according to the invention contain a liquid-crystalline modulation medium which has optimised elastic constants and are distinguished, in particular, by high contrast and/or optimised transmission in addition to good contrast, a low viewing-angle dependence, short response times and low addressing voltages. The present invention likewise relates to the liquid-crystalline modulation media used in the electro-optical light-modulation elements.Type: GrantFiled: August 26, 2008Date of Patent: May 1, 2012Assignee: Merck Patent Gesellschaft MIT Beschraenkter HaftungInventors: Mark Goebel, Markus Czanta
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Publication number: 20120099039Abstract: A liquid crystal compound having a large refractive index anisotropy, a large dielectric anisotropy, and a low melting point, and a liquid crystal medium having a liquid crystal phase over a wide temperature range, a large refractive index anisotropy, a large dielectric anisotropy, and having an optically isotropic liquid crystal phase, are provided. The present invention is a liquid crystal compound having a chlorobenzene ring, and a liquid crystal medium characterized by containing the liquid crystal compound and a chiral reagent, and exhibiting an optically isotropic liquid crystal phase.Type: ApplicationFiled: May 7, 2010Publication date: April 26, 2012Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATIONInventors: Yasuhiro Haseba, Takafumi Kuninobu
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Publication number: 20120097895Abstract: A liquid crystal composition containing a polymerizable compound according to the present invention is used in a liquid crystal display element to which a liquid crystal alignment capability is provided by polymerization. The composition contains a polymerizable compound that polymerizes without a photopolymerization initiator or with only an extremely small amount of photopolymerization initiator. Therefore, the alignment after the polymerization becomes more stable and the display characteristics do not degrade. Thus, the polymerizable compound is suitable as a practical component of the liquid crystal composition. A liquid crystal display element that uses the liquid crystal composition containing a polymerizable compound according to the present invention can be suitably used for VA and IPS liquid crystal display elements.Type: ApplicationFiled: April 1, 2010Publication date: April 26, 2012Applicant: DIC CorporationInventors: Takeshi Kuriyama, Shinichi Hirata, Shotaro Kawakami
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Patent number: 8163200Abstract: The invention relates to liquid-crystalline compounds of the formula I in which R1, R2, A1, A2, A3, A4, Z1, Z2, Z3, V, a, b and c have the meanings indicated in Claim 1, and to liquid-crystalline media comprising at least one compound of the formula I, and to electro-optical displays containing a liquid-crystalline medium of this type.Type: GrantFiled: July 18, 2007Date of Patent: April 24, 2012Assignee: Merck Patent Gesellschaft MIT Beschraenkter HaftungInventors: Lars Lietzau, Markus Czanta, Atsutaka Manabe, Kai Jaehrling
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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: 8158024Abstract: A liquid crystal display includes a first substrate; a second substrate facing the first substrate; a pair of field generating electrodes disposed on at least one of the first and the second substrates; and a liquid crystal layer disposed between the first and the second substrates; wherein the liquid crystal layer includes a liquid crystal composition including a polar compound, the polar compound including a compound represented by Formula 1: wherein A represents X is a halogen, R1 is a substituted or unsubstituted C1-C10 alkyl group or a substituted or unsubstituted C1-C10 alkoxy group and R2 is a C1-C5 alkyl group or a C1-C5 alkoxy group.Type: GrantFiled: August 3, 2009Date of Patent: April 17, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Joon-Hyung Park, Jin-Lak Kim, Jeong-Uk Heo, Seong-Nam Lee, Jang-Hyun Kim
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Patent number: 8158021Abstract: A polymerizable liquid crystal compound shown by the following formula (I), a polymerizable liquid crystal composition that includes the polymerizable liquid crystal compound and a chiral compound polymerizable with the polymerizable liquid crystal compound, a liquid crystalline polymer obtained by polymerizing the polymerizable liquid crystal compound or the polymerizable liquid crystal composition, and an optical anisotropic article that includes the liquid crystalline polymer. The polymerizable liquid crystal compound shows a liquid crystal phase over a wider temperature range, is chemically stable, can be inexpensively produced, and has a wide selective reflection wavelength band ?? (i.e., a large value ?n).Type: GrantFiled: April 24, 2008Date of Patent: April 17, 2012Assignee: Zeon CorporationInventors: Kei Sakamoto, Naoto Kogoshi, Yoshihide Yachi
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Patent number: 8158023Abstract: Disclosed are a biaxial 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: April 17, 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