Including Fused Or Bridged Rings Patents (Class 252/299.62)
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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: 20140362335Abstract: 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: August 25, 2014Publication date: December 11, 2014Applicants: LC VISION, LLC, CALIFORNIA INSTITUTE OF TECHNOLOGYInventors: Julia A. KORNFIELD, Michael WAND, Zuleikha KURJI
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Patent number: 8906258Abstract: A thermotropic liquid crystalline polymer composition capable of exhibiting both a low melting temperature and good heat resistance without the use of conventional naphthenic acids is provided. The melting temperature may, for example, range from about 250° C. to about 400° C. Even at such low melting temperatures, the present inventors have surprisingly discovered that the ratio of the deflection temperature under load (“DTUL”), a measure of short term heat resistance, to the melting temperature may remain relatively high. The specific DTUL values may range from about 200° C. to about 300° C. The ability to form a polymer composition with the properties noted above may be achieved, at least in part, by the use of an aromatic amide oligomer.Type: GrantFiled: August 27, 2012Date of Patent: December 9, 2014Assignee: Ticona LLCInventors: Steven D. Gray, Kamlesh P. Nair, Joseph J. Grenci
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Patent number: 8906260Abstract: To provide a liquid crystal compound showing a large absolute value of dielectric anisotropy (|??|. A compound is represented by formula (1): wherein, in formula (1), Ra and Rb are fluorine, alkyl having 1 to 10 carbons or the like, and in the alkyl, at least one of —CH2— may be replaced by —O— or the like, however, Ra and Rb are not identical; A1, A2, A3, A4 and A5 are 1,4-cyclohexylene, 1,4-phenylene or the like, and in the groups, at least one of hydrogen may be replaced by fluorine; Z1, Z2, Z4 and Z5 are a single bond or the like; Y1, Y2, Y3 and Y4 are hydrogen, fluorine or the like; and m, n, q and r are 0, 1 or 2, and a sum of m, n, q and r is 0, 1, 2, 3 or 4.Type: GrantFiled: February 28, 2013Date of Patent: December 9, 2014Assignees: JNC Corporation, JNC Petrochemical CorporationInventor: Yasuyuki Sasada
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Patent number: 8900479Abstract: 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: GrantFiled: December 22, 2010Date of Patent: December 2, 2014Assignees: JNC Corporation, JNC Petrochemical CorporationInventors: Yoshimasa Furusato, Eriko Kurihara, Maiko Ito
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Patent number: 8895118Abstract: The present invention relates generally to the field of organic chemistry and particularly to the nematic lyotropic liquid crystal solution and negative dispersion retardation plate for application in 3D liquid crystal displays. The negative dispersion retardation plate comprises a substrate, and at least one optically anisotropic retardation layer comprising a multi-component guest-host composition coated onto the substrate.Type: GrantFiled: November 6, 2011Date of Patent: November 25, 2014Assignee: Crysoptix K.K.Inventors: Arthur Geivandov, Pavel Ivan Lazarev, Serguei Palto
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Patent number: 8883271Abstract: The present invention is to provide a novel polymerizable chiral compound (chiral agent) having high left-handed helical twisting power, a polymerizable liquid crystal composition comprising the polymerizable chiral compound and a polymerizable liquid crystal compound, a liquid crystal polymer, and an optically anisotropic body.Type: GrantFiled: March 10, 2011Date of Patent: November 11, 2014Assignee: Zeon CorporationInventors: Kei Sakamoto, Kentaro Tamura, Kumi Okuyama
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Patent number: 8885124Abstract: The present invention provides a liquid crystal display device capable of preventing a decrease in voltage holding ratio (VHR) of a liquid crystal layer and an increase in ion density (ID) and resolving the problem of display defects such as white spots, alignment unevenness, image sticking, and the like. The liquid crystal display device of the present invention is characterized by preventing a decrease in voltage holding ratio (VHR) of a liquid crystal layer and an increase in ion density (ID) and suppressing the occurrence of display defects such as image sticking and the like, and is thus particularly useful for a VA-mode or PSVA-mode liquid crystal display device for active matrix driving, and can be applied to liquid crystal display devices such as a liquid crystal TV, a monitor, a cellular phone, a smart phone, and the like.Type: GrantFiled: December 14, 2012Date of Patent: November 11, 2014Assignee: DIC CorporationInventors: Masakazu Kaneoya, Kiyofumi Takeuchi, Seiji Funakura, Katsunori Shimada
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Patent number: 8877092Abstract: The invention relates to a liquid-crystalline medium which comprises at least one compound of the formula I, in which R1, R1*, ring A have the meanings indicated in claim 1, 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: GrantFiled: February 10, 2011Date of Patent: November 4, 2014Assignee: MERCK PATENT GmbHInventors: Melanie Klasen-Memmer, Volker Reiffenrath, Konstantin Schneider, Andreas Waechtler, Elvira Montenegro
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Patent number: 8860912Abstract: There is provided a liquid crystal display device capable of preventing a decrease in voltage holding ratio (VHR) of a liquid crystal layer and an increase in ion density (ID) and resolving the problem of display defects such as white spots, alignment unevenness, image sticking, and the like. The liquid crystal display device prevents a decrease in voltage holding ratio (VHR) of a liquid crystal layer and an increase in ion density (ID) and suppressing the occurrence of display defects such as image sticking and the like. The liquid crystal display device is thus useful for a VA-mode or PSVA-mode liquid crystal display device for active matrix driving. The application of the device includes liquid crystal display devices such as liquid crystal TVs, monitors, cellular phones, and smart phones.Type: GrantFiled: January 29, 2013Date of Patent: October 14, 2014Assignee: DIC CorporationInventors: Masakazu Kaneoya, Kiyofumi Takeuchi, Akira Kimura, Seiji Funakura, Katsunori Shimada
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Publication number: 20140293213Abstract: A liquid crystal composition containing a polymerizable compound of the present invention has excellent characteristics of being able to prepare a PSA type liquid crystal display element with no problem of depositing in a wide temperature range, having high polymerization speed, high liquid crystal alignment regulation force after polymerization, excellent display qualities with no display unevenness or the like, and excellent display characteristics with no defects in display characteristics such as image sticking and is appropriate as a liquid crystal composition in a practical use. Further, the liquid crystal display element with the above-described liquid crystal composition can be appropriately used for a PSA type liquid crystal display element.Type: ApplicationFiled: August 10, 2012Publication date: October 2, 2014Applicant: DIC CORPORATIONInventors: Kazuki Kurisawa, Takeshi Kuriyama, Shotaro Kawakami
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Patent number: 8828508Abstract: A liquid crystal composition in which deterioration of viscosity that is associated with an increase in ?n and an increase in ?? is suppressed, and a liquid crystal display element having a markedly improved response speed by using the relevant liquid crystal composition. The liquid crystal composition has a large value of ?n and negative ??, and have large absolute values thereof. Also, the liquid crystal composition has low ?, has excellent liquid crystal properties, and exhibits a liquid crystal phase that is stable in a wide temperature range. Furthermore, since the liquid crystal composition is chemically stable to heat, light, water and the like, the liquid crystal composition is capable of low voltage driving, and is practically useful and highly reliable.Type: GrantFiled: April 5, 2012Date of Patent: September 9, 2014Assignee: DIC CorporationInventors: Haruki Ohishi, Shirou Taniguchi, Kunihiko Kotani, Kazunori Maruyama
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Patent number: 8821993Abstract: A liquid crystal composition has a negative dielectric anisotropy, and contains a specific bicyclic compound having a large optical anisotropy and a small viscosity as a first component and a specific compound having a large maximum temperature and a large dielectric anisotropy as a second component, and may contain a specific compound having a small viscosity as a third component, a specific compound having a large dielectric anisotropy as a fourth component and a specific compound having a large dielectric anisotropy as a fifth component, and a liquid crystal display device includes the composition.Type: GrantFiled: September 27, 2011Date of Patent: September 2, 2014Assignees: JNC Corporation, JNC Petrochemical CorporationInventors: Norikatsu Hattori, Yoshinari Matsumura, Hiroaki Fujita
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Patent number: 8821755Abstract: 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: GrantFiled: March 21, 2012Date of Patent: September 2, 2014Assignee: Sumitomo Chemical Company, LimitedInventor: Tomoko Uehara
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Patent number: 8808814Abstract: The liquid crystal composition includes a specific two-ring compound having a large optical anisotropy and a small viscosity as a first component, a specific three-ring compound having a high maximum temperature and a large dielectric anisotropy as a second component, and a specific compound having a large dielectric anisotropy as a third component, and may include a specific compound having a small viscosity as a fourth component, a specific three-ring compound having a large optical anisotropy and a large dielectric anisotropy as a fifth component, and a specific compound having a large dielectric anisotropy as a sixth component, and the liquid crystal display device contains this composition.Type: GrantFiled: September 27, 2011Date of Patent: August 19, 2014Assignees: JNC Corporation, JNC Petrochemical CorporationInventors: Yoshinari Matsumura, Norikatsu Hattori
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Publication number: 20140225036Abstract: A nematic liquid crystal composition of the present invention is used in liquid crystal display devices of the TN mode, OCB mode, ECB mode, IPS mode, or VA-IPS mode. The liquid crystal composition has positive dielectric anisotropy. Since the refractive index anisotropy and the nematic phase-isotropic liquid phase transition temperature are decreased and the increase in the lower limit temperature of the nematic phase is suppressed, the viscosity of the liquid crystal composition is sufficiently low without degrading the nematic phase temperature range. The liquid crystal composition also offers excellent features such as high-speed response, good display quality, and less display failures and is thus suitable as a practical liquid crystal composition.Type: ApplicationFiled: July 31, 2012Publication date: August 14, 2014Applicant: DIC CORPORATIONInventors: Masakazu Kaneoya, Kiyofumi Takeuchi, Masashi Osawa, Kenta Tojo, Tetsuo Kusumoto
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Patent number: 8801966Abstract: Provided are liquid crystal compounds and mixtures incorporating the same. The liquid crystal compounds of the invention generally comprise a cyclopentane group and at least two other rings. In one embodiment, the liquid crystal compounds of the invention comprise a cyclopentane group and at least two other rings, one of which is a fused ring system.Type: GrantFiled: February 5, 2009Date of Patent: August 12, 2014Assignee: VVI Bright China Ltd.Inventors: Xinhua Chen, R. Amaranatha Reddy
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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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Patent number: 8790544Abstract: It is possible to obtain a polarizing film having a high dichroic ratio by using a liquid-crystalline coating solution in which a small quantity of a second lyotropic liquid-crystalline low-molecular compound is mixed with a first lyotropic liquid-crystalline low-molecular compound. The second lyotropic liquid-crystalline low-molecular compound has a mole number smaller than the first lyotropic liquid-crystalline low-molecular compound. The molecular size of the second lyotropic liquid-crystalline low-molecular compound is smaller than that of the first lyotropic liquid-crystalline low-molecular compound.Type: GrantFiled: July 1, 2010Date of Patent: July 29, 2014Assignee: Nitto Denko CorporationInventors: Shoichi Matsuda, Tadayuki Kameyama, Sadahiro Nakanishi, Toru Umemoto
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Patent number: 8784682Abstract: Disclosed are a thermosetting composition including a liquid crystal oligomer, a bismaleimide-based compound, an epoxy compound, and a fluorinated polymer resin powder. A resin cured product, board, and storage medium each include the thermosetting composition.Type: GrantFiled: March 15, 2011Date of Patent: July 22, 2014Assignees: Samsung Electro-Mechanics Co., Ltd., Samsung Fine Chemicals Co., Ltd.Inventors: Myung-Sup Jung, Jae-Jun Lee
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Patent number: 8784684Abstract: A compound which has a benzoxazinone ring and an aromatic ring that directly bonds to the benzoxazinone ring, and has a mesogenic core substituted by a substituent having a polymerizable functional group is excellent in terms of durability, colorless, and exhibits a high ?n while having an azomethine bond.Type: GrantFiled: August 7, 2013Date of Patent: July 22, 2014Assignee: FUJIFILM CorporationInventors: Satoshi Shimamura, Mitsuyoshi Ichihashi
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Patent number: 8778466Abstract: The present invention relates to a liquid-crystal display of the PSA (polymer sustained alignment) type, and to novel liquid-crystal media and novel polymerizable compounds for use in PSA displays.Type: GrantFiled: October 11, 2007Date of Patent: July 15, 2014Assignee: Merck Patent GmbHInventors: Georg Bernatz, Andreas Taugerbeck
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Publication number: 20140191158Abstract: A liquid crystal composition that is useful for an active matrix (AM) device has a nematic phase and positive dielectric anisotropy. An active matrix liquid crystal display device includes the liquid crystal composition. By the total weight of the liquid crystal composition, the liquid crystal composition comprises 8%-50% of a compound of the general formula (I), 10%-70% (by weight) of a compound of the general formula (II), and 5%-50% (by weight) of a compound of the general formula (III).Type: ApplicationFiled: July 31, 2012Publication date: July 10, 2014Applicant: JIANGSU HECHENG DISPLAY TECHNOLOGY CO., LTD.Inventors: Feng Wu, Wenming Han, Hongwei Zhang, Yudong Tan, Canhui Jin, XIA Zhu
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Patent number: 8765011Abstract: 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: GrantFiled: May 10, 2012Date of Patent: July 1, 2014Assignees: JNC Corporation, JNC Petrochemical CorporationInventors: Teizi Satou, Yasuyuki Goto
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Patent number: 8765012Abstract: A thermosetting composition including an organic solvent, a liquid crystalline thermoset oligomer, and either a crosslinking agent or an epoxy resin or both is disclosed. A printed circuit board which includes the thermosetting composition is also disclosed. The printed circuit board is produced by impregnating the thermosetting composition into a reinforcing material.Type: GrantFiled: November 18, 2009Date of Patent: July 1, 2014Assignees: Samsung Electronics Co., Ltd., Samsung Electro-Mechanics Co., Ltd., Samsung Fine Chemicals Co., Ltd.Inventors: Myung Sup Jung, Chung Kun Cho, Kwang Hee Kim, Kalinina Fedosya, Man Jong Kim, Tae Jun Ok
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Publication number: 20140166931Abstract: A liquid crystal composition and an AM liquid crystal display device are described. The liquid crystal composition has a negative dielectric anisotropy, contains a specific compound having a large negative dielectric anisotropy as a first component and a two-ring compound having a small viscosity as a second component, and may further contain a specific compound having a large negative dielectric anisotropy as a third component, a specific compound having a small viscosity as a fourth component and a specific compound having a large negative dielectric anisotropy as a fifth component. The AM liquid crystal display device includes the liquid crystal composition.Type: ApplicationFiled: February 8, 2013Publication date: June 19, 2014Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATIONInventors: Yasuyuki Goto, Kazuhiko Saigusa, Norikatsu Hattori
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Patent number: 8747695Abstract: 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-anthracenylene radical, and the other parameters are as defined in Claim 1. The invention additionally includes liquid-crystalline media which comprise the title compounds, components for high-frequency technology which comprise these media, in particular phase shifters and microwave array antennae.Type: GrantFiled: October 1, 2010Date of Patent: June 10, 2014Assignee: Merck Patent GmbHInventors: Christian Jasper, Elvira Montenegro, Detlef Pauluth, Volker Reiffenrath, Atsutaka Manabe
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Patent number: 8741176Abstract: A liquid crystal compound with high optical anisotropy is provided. The liquid crystal compound is represented by formula (I), wherein each of R1 and R2 represents an alkyl group having 1 to 10 carbon atoms or an alkenyl group having 2 to 10 carbon atoms; the alkyl group and the alkenyl group are unsubstituted or substituted by —O—, —CO—, or —COO— groups; each of X1, X2, X3, and X4 represents hydrogen or fluorine, and at least one of X1, X2, X3, and X4 is fluorine; m is 1, 2, or 3; n is 0, 1, or 2, and 2?m+n?3.Type: GrantFiled: March 9, 2012Date of Patent: June 3, 2014Assignee: Daxin Materials CorporationInventors: Chun-Chih Wang, Chin-Yen Chang, Yu-Ying Hsieh
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Patent number: 8734918Abstract: A liquid crystalline coating solution which comprises: an azo compound represented by the following general formula (1); and a solvent to dissolve the azo compound: wherein Q1 is an aryl group which may have any substituent group; Q2 is an arylene group which may have any substituent group; R is a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, an acetyl group, a benzoyl group, or a phenyl group (these groups may have any substituent groups); and M is a counter ion.Type: GrantFiled: October 30, 2008Date of Patent: May 27, 2014Assignee: Nitto Denko CorporationInventors: Shoichi Matsuda, Kyoko Nishiguchi, Tadayuki Kameyama
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Patent number: 8728590Abstract: The liquid crystal composition having a negative dielectric anisotropy contains two ring compound having a large optical anisotropy and a negatively large dielectric anisotropy as the first component, three ring compound having a large maximum temperature and a large dielectric anisotropy as the second component, three ring compound having a large optical anisotropy and a large dielectric anisotropy as the third component, and two ring compound having a small viscosity as the fourth component. The liquid crystal display device contains the compositions.Type: GrantFiled: May 24, 2011Date of Patent: May 20, 2014Assignees: JNC Corporation, JNC Petrochemical CorporationInventors: Norikatsu Hattori, Kazuhiko Saigusa
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Patent number: 8709281Abstract: A liquid crystal composition comprising a chiral dopant compound represented by the following structure (Structure 1): wherein: R1 and R2 are independently hydrogen, —(C?O)R9, —(C?O)R10, alkyl, aryl, alkaryl, alkenyl, cycloalkyl, alkoxyaryl, or heterocyclic all either substituted or unsubstituted, or combine to form a carbocyclic or heterocyclic ring; and R3-R9 are as described in the disclosure. Also featured are liquid crystal compositions comprising a chiral dopant compound represented by any of Structure 2-4 as described in the disclosure.Type: GrantFiled: August 24, 2012Date of Patent: April 29, 2014Assignee: Kent State UniversityInventors: Donald R. Diehl, Erica N. Montbach
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Patent number: 8703013Abstract: 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, PALC or IPS effect.Type: GrantFiled: March 8, 2013Date of Patent: April 22, 2014Assignee: Merck Patent GmbHInventors: Norihiko Tanaka, Makoto Murakami, Shinji Nakajima
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Patent number: 8703012Abstract: To provide 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, or a liquid crystal composition having a suitable balance regarding at least two characteristics; an AM device having a short response time, a large voltage holding ratio and contrast ratio, a long service life and so forth; wherein the liquid crystal composition contains a specific compound having a polymerizable group as a first component, and may contain 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: GrantFiled: May 9, 2011Date of Patent: April 22, 2014Assignees: JNC Corporation, JNC Petrochemical CorporationInventors: Yoshimasa Furusato, Eriko Kurihara
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Publication number: 20140104544Abstract: The present invention relates to polymerisable compounds, to processes and intermediates for the preparation thereof, and to the use thereof for optical, electro-optical and electronic purposes, in particular in liquid-crystal (LC) media and LC displays, especially in LC displays of the PS (polymer-stabilised) and PSA (polymer-sustained alignment) type.Type: ApplicationFiled: December 17, 2013Publication date: April 17, 2014Applicant: MERCK PATENT GMBHInventors: Achim GOETZ, Erdal DURMAZ, Malgorzata RILLICH, Andreas TAUGERBECK
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Patent number: 8697199Abstract: The invention relates to novel calamitic mesogenic compounds 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 compounds, formulations and films in optical, electrooptical, electronic, semiconducting or luminescent components or devices.Type: GrantFiled: August 6, 2008Date of Patent: April 15, 2014Assignee: Merck Patent GmbHInventors: Kevin Adlem, Owain Llyr Parri, Karl Skjonnemand, David Wilkes
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Patent number: 8697200Abstract: The present invention relates to polymerizable compounds, to processes and intermediates for the preparation thereof, and to the use thereof for optical, electro-optical and electronic purposes, in particular in liquid-crystal (LC) media and LC displays, especially in LC displays of the PS (polymer-stabilized) and PSA (polymer-sustained alignment) type.Type: GrantFiled: March 4, 2009Date of Patent: April 15, 2014Assignee: Merck Patent GmbHInventors: Achim Goetz, Erdal Durmaz, Malgorzata Rillich, Andreas Taugerbeck
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Patent number: 8696932Abstract: The present invention provides a liquid-crystalline polymer composition comprising: 100 parts by weight of a liquid-crystalline polymer and 1-150 parts by weight of the total weight of talc particles (A) and talc particles (B), wherein talc particles (A) have an aspect ratio of 3.1-5.0 and a median particle diameter of 5-100 ?m; and talc particles (B) have an aspect ratio of 1.0-3.0 and a median particle diameter of 5-100 ?m; wherein the weight ratio of talc particles (A)/talc particles (B) is from 1/9 to 9/1, and wherein the liquid-crystalline polymer composition according to the present invention exhibits improved molding flowability without impairing mechanical properties.Type: GrantFiled: July 26, 2012Date of Patent: April 15, 2014Assignee: Ueno Fine Chemicals Industry, Ltd.Inventors: Hiroto Uchida, Hitoshi Tsuchiya
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Patent number: 8691111Abstract: A liquid crystal composition comprising a chiral dopant compound represented by the following formula: wherein: R1, R2 are independently aryl, alkyl, alkenyl, cycloalkyl, alkoxyaryl, alkaryl or heterocyclic all either substituted or unsubstituted, or combine to form a carbocyclic or heterocyclic ring; R3 and R4 are independently hydrogen, halogen, cyano, alkoxy, NHCOR7, NHSO2R7, COOR7, OCOR7, aryl, alkyl, alkenyl, cycloalkyl, alkoxyaryl, alkaryl or heterocyclic all either substituted or unsubstituted, or combine with either R1 or R2 to form a carbocylic or heterocyclic ring; R5 and R6 are independently hydrogen, CH2, CH, alkyl or aryl either substituted or unsubstituted, COOR7, or combine with L to form a carbocyclic or heterocyclic ring; R7 is aryl, alkyl, alkenyl, cycloalkyl, alkoxyaryl or heterocyclic all either substituted or unsubstituted; L is the non-metallic elements required to form a carbocyclic or heterocyclic ring, or a single bond or a double bond; m is 1-3; n is 0-12.Type: GrantFiled: April 26, 2012Date of Patent: April 8, 2014Assignee: Kent Displays Inc.Inventors: Donald R. Diehl, Thomas Welter, Erica N. Montbach, J. William Doane, Nithya Venkataraman
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Patent number: 8685275Abstract: 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, PALC or IPS effect.Type: GrantFiled: April 24, 2013Date of Patent: April 1, 2014Assignee: Merck Patent GmbHInventors: Norihiko Tanaka, Makoto Murakami, Shinji Nakajima
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Patent number: 8679376Abstract: A polarization film, including a polymer resin, and a dichroic dye dispersed in the polymer resin and represented by the following Chemical Formula 1: wherein, in Chemical Formula 1, Ar, R1 to R4 are the same as those defined in the detailed description.Type: GrantFiled: March 7, 2013Date of Patent: March 25, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Yong-Joo Lee, Deuk-Kyu Moon, Jong-Hoon Won, Myung-Man Kim, Myung-Sup Jung
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Publication number: 20140077129Abstract: Disclosed herein are an epoxy resin composition for a printed circuit board, an insulating film, a prepreg, and a multilayer printed circuit board, the epoxy resin composition for a printed circuit board including a liquid crystal oligomer, an epoxy resin, an amino triazine novolac hardener, and an inorganic filler; the insulating film and the prepreg each being manufactured by using the resin composition; and the multilayer printed circuit board including the insulating film or the prepreg.Type: ApplicationFiled: February 28, 2013Publication date: March 20, 2014Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Jin Seok Moon, Seong Hyun Yoo, Keun Yong Lee, Hyun Jun Lee
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Patent number: 8673411Abstract: Providing a liquid crystal composition satisfies at least one of characteristics like a high maximum temperature of a nematic phase, a low minimum temperature of the 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. Providing a liquid crystal composition has a suitable balance regarding at least two of the characteristics. Providing an AM device 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 has a negative dielectric anisotropy and contains a specific compound having a large negative dielectric anisotropy as a first component and a specific three-ring compound having a large optical anisotropy and a negative dielectric anisotropy as a second component, and a liquid crystal display device contains the composition.Type: GrantFiled: August 16, 2010Date of Patent: March 18, 2014Assignees: JNC Corporation, JNC Petrochemical CorporationInventor: Masayuki Saito
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Patent number: 8673178Abstract: The invention relates to compounds of the formula I in which R0, A0, A1, A2, Z0, Z1, Z2, L1, L2, X, l, m and n have the meanings indicated in claim 1, and to the use thereof in liquid-crystalline media, and to liquid-crystalline media comprising one or more compounds of the formula I in electro-optical liquid-crystal displays.Type: GrantFiled: November 29, 2010Date of Patent: March 18, 2014Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Michael Wittek, Brigette Schuler, Volker Reiffenrath, Axel Jansen, Christian Hock, Harald Hirschmann
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Patent number: 8669391Abstract: Disclosed are a silicon-containing compound, a liquid crystal composition comprising the same compound, and a liquid crystal display device comprising a liquid crystal layer prepared from the liquid crystal composition. The silicon-containing compound, which forms the liquid crystal composition, has low viscosity and high positive dielectric anisotropy. Therefore, it is possible to provide a liquid crystal display device, which has a fast response time and can be driven at a low voltage.Type: GrantFiled: March 3, 2010Date of Patent: March 11, 2014Assignee: LG Chem, Ltd.Inventors: Jae Ho Cheong, Min Jin Ko, Dae Ho Kang, Ki Youl Lee, Youn Bong Kim
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Publication number: 20140061535Abstract: A liquid crystal composition in which deterioration of viscosity that is associated with an increase in ?n and an increase in ?? is suppressed, and a liquid crystal display element having a markedly improved response speed by using the relevant liquid crystal composition. The liquid crystal composition has a large value of ?n and negative ??, and have large absolute values thereof. Also, the liquid crystal composition has low ?, has excellent liquid crystal properties, and exhibits a liquid crystal phase that is stable in a wide temperature range. Furthermore, since the liquid crystal composition is chemically stable to heat, light, water and the like, the liquid crystal composition is capable of low voltage driving, and is practically useful and highly reliable.Type: ApplicationFiled: April 5, 2012Publication date: March 6, 2014Applicant: DIC CORPORATIONInventors: Haruki Ohishi, Shirou Taniguchi, Kunihiko Kotani, Kazunori Maruyama
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Publication number: 20140061536Abstract: The present invention relates to compounds of the formula I to the use thereof for high-frequency components, to liquid-crystalline media comprising the compounds, and to high-frequency components, in particular antennae, especially for the gigahertz range, comprising these media. The liquid-crystalline media serve, for example, for the phase shifting of microwaves for tuneable “phased-array” antennae.Type: ApplicationFiled: March 28, 2012Publication date: March 6, 2014Applicant: MERCK PATENT GmbHInventors: Volker Reiffenrath, Christian Jasper, Detlef Pauluth, Atsutaka Manabe
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Patent number: 8663497Abstract: 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: GrantFiled: October 19, 2010Date of Patent: March 4, 2014Assignee: Adeka CorporationInventors: Ken Matsumoto, Masatomi Irisawa
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Publication number: 20140043579Abstract: A liquid crystal composition that satisfies at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of a nematic phase, a small viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat or that is suitably balanced between at least two of the characteristics, is described. The liquid crystal composition includes a compound having three or more polymerizable groups as a first component and a compound having one or two polymerizable groups as a second component in a suitable ratio, and that may include a specific compound having a large negative dielectric anisotropy and a low minimum temperature as a third component or a specific compound having a small viscosity or a high maximum temperature as a fourth component.Type: ApplicationFiled: August 6, 2013Publication date: February 13, 2014Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATIONInventors: YOSHIMASA FURUSATO, SUBARU KAWASAKI, ERIKO KURIHARA
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Patent number: 8647724Abstract: The present invention provides a liquid crystal display device capable of reducing the probability of image sticking. The liquid crystal display device includes a pair of substrates and a liquid crystal layer between the substrates. At least one of the substrates includes an alignment film and a polymer layer on the alignment film. The polymer layer includes monomer units derived from at least two species of polymerizable monomers. The at least two species of polymerizable monomers include at least two species of monomers selected from the group consisting of: specific polyfunctional monomers and specific monofunctional monomers.Type: GrantFiled: October 8, 2009Date of Patent: February 11, 2014Assignee: Sharp Kabushiki KaishaInventors: Masanobu Mizusaki, Takashi Katayama, Yuichi Kawahira, Takeshi Noma, Yohei Nakanishi
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Patent number: 8643809Abstract: Disclosed is an azo compound represented by the general formula (1) or a salt thereof: wherein R1 and R2 independently represent a hydrogen atom, a lower alkyl group or a lower alkoxy group; and n represents 1 or 2. Also disclosed are a dye-containing polarizing film and a dye-containing polarizing plate, each of which comprises a polarizing film base material and the azo compound contained in the base material.Type: GrantFiled: November 17, 2010Date of Patent: February 4, 2014Assignees: Nippon Kayaku Kabushiki Kaisha, Polatechno Co., Ltd.Inventors: Yuichi Sadamitsu, Takuto Nishiguchi, Hiroaki Ohno