Including Fused Or Bridged Rings Patents (Class 252/299.62)
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Publication number: 20140027672Abstract: To provide a liquid crystal composition satisfying at least one characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature thereof, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy and specific resistance, high stability to ultraviolet light and heat, or having a suitable balance regarding at least two of the characteristics; an AM device having short response time, a large voltage holding ratio and contrast ratio, and a long life. A liquid crystal composition has a nematic phase and contains a specific straight-chain compound as a first component and a specific compound having a large dielectric anisotropy as second component, and may contain a specific compound having a high maximum temperature or small viscosity as a third component and a specific compound having a high maximum temperature or large dielectric anisotropy as a fourth component, and a liquid crystal display device includes the composition.Type: ApplicationFiled: July 18, 2013Publication date: January 30, 2014Inventors: TAKAYOSHI YANAI, NORIKATSU HATTORI, HIROYUKI TANAKA
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Publication number: 20140028964Abstract: The invention relates to a liquid-crystalline medium which comprises at least one compound of the formula I, in which R1, R1*, rings A and B, Z1, L1, L2, a and b 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, PS-FFS, IPS or PS-IPS effect.Type: ApplicationFiled: March 8, 2012Publication date: January 30, 2014Applicant: MERCK PATENT GMBHInventors: Melanie Klasen-Memmer, Achim Goetz, Georg Bernatz
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Patent number: 8637125Abstract: Providing a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature of nematic phase, low minimum temperature of the nematic phase, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light and heat, or having a suitable balance regarding at least two of the characteristics; and an AM device having short response time, large voltage holding ratio, large contrast ratio, long service life and so forth. The liquid crystal composition has a negative dielectric anisotropy and contains a specific two-ring compound having a low minimum temperature as a first component, a specific compound having a large negative dielectric anisotropy as a second component, a specific compound having a low viscosity as a third component, and a specific compound having a large negative dielectric anisotropy as a fourth component. The liquid crystal display device contains the composition.Type: GrantFiled: April 12, 2012Date of Patent: January 28, 2014Assignees: JNC Corporation, JNC Petrochemical CorporationInventors: Yasuyuki Goto, Subaru Kawasaki, Norikatsu Hattori
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Publication number: 20140022473Abstract: Disclosed are liquid-crystal (LC) media for use in LC displays of the PS (polymer stabilised) or PSA (polymer sustained alignment) type which contain a liquid-crystal (LC) mixture that contains one or more compounds of formula IType: ApplicationFiled: July 3, 2013Publication date: January 23, 2014Applicant: MERCK PATENT GmbHInventors: Achim GOETZ, Melanie KLASEN-MEMMER, Stephan DEROW, Sabine SCHOEN, Peter BEST
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Patent number: 8632861Abstract: Providing a liquid crystal composition satisfies at least one of characteristics like 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 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 large negative dielectric anisotropy as a first component, a specific two-ring compound having low minimum temperature and negative dielectric anisotropy as a second component and a specific two-ring compound having low viscosity as a third component. The liquid crystal display device contains the composition.Type: GrantFiled: August 16, 2010Date of Patent: January 21, 2014Assignees: JNC Corporation, JNC Petrochemical CorporationInventor: Masayuki Saito
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Patent number: 8628685Abstract: Compounds including at least one mesogenic substructure and at least one long flexible segment and methods of synthesizing the same are disclosed. Formulations which include various embodiments of the mesogen-containing compounds and their use in articles of manufacture and ophthalmic devices are also disclosed.Type: GrantFiled: March 18, 2011Date of Patent: January 14, 2014Assignee: Transitions Optical, IncInventors: Meng He, Anil Kumar
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Publication number: 20140008571Abstract: The invention relates to a liquid-crystalline medium which comprises at least one compound of the formula I, in which R1, R1*, L1, L2 and L3 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, PA-VA, PALC, FFS, PS-FFS, IPS or PS-IPS effect. The invention furthermore also relates to compounds of the formula I.Type: ApplicationFiled: February 27, 2012Publication date: January 9, 2014Applicant: MERCK PATENT GMBHInventors: Melanie Klasen-Memmer, Matthias Bremer, Harald Lannert, Konstantin Schneider
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Publication number: 20140008572Abstract: The compound represented by formula (1). For example, the rings A1, A2, A3 and A4 are 1,4-phenylene, Z1 and Z2 are alkylene having 1 to 10 carbons in which at least one —CH2— may be replaced by —O— or —CH?CH—; L1, L2 and L3 are a single bond, —COO— or —CH?CH—; G1 and G2 area single bond or —O—; s, t and u are 0 or 1; and P1 and P2 is the group (P-1), the group (P-2) or the group (P-3). M1 and M2 are hydrogen or methyl.Type: ApplicationFiled: December 20, 2012Publication date: January 9, 2014Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATIONInventors: YASUYUKI GOTOH, MAYUMI GOTO
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Patent number: 8623238Abstract: The present invention relates to compounds represented by the following Formula Ic, in which R2-R6 can each independently be selected from hydrogen or hydrocarbyl (e.g., methyl); L1 and L4 are each independently a divalent linking group, such as a bond or —OC(O)—R8—C(O)O—, where R8 can be divalent hydrocarbyl (e.g., —CH2CH2—); each L2 and each L5 each independently represent a flexible segment, such as divalent linear or branched C1-C25 alkyl; each L3 and each L6 each independently represent a rigid segment including, for example, optionally substituted phenylen-1,4-diyl groups; t and s are each independently from 1 to 4; m and p are each independently from 0 to 4 for each t, provided that the sum of m and p is at least 1 for each t; q and r are each independently from 0 to 4 for each s, provided that the sum of q and r is at least 1 for each s; and E1 and E2 can each independently be hydrogen or hydrocarbyl.Type: GrantFiled: August 8, 2011Date of Patent: January 7, 2014Assignee: Transitions Optical, Inc.Inventors: Ruisong Xu, Xiao-Man Dai, Anil Kumar, Meng He, Chenguang Li, Rachael L. Yoest
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Publication number: 20140002773Abstract: To provide a polymerizable liquid crystal composition showing good coating properties even when a support substrate has a low solvent resistance, and having uniform alignment properties. A polymerizable liquid crystal composition is prepared by containing as components an acrylate polymerizable liquid crystal compound, a compound represented by formula (3), and a non-liquid crystalline compound having an acryloyl group or a methacryloyl group as a reactive moiety, and having a functional group including a hydroxyl group as a reactive dilution solvent in one molecule. When the polymerizable liquid crystal composition is applied onto the support substrate, dried and irradiated with light, the polymerizable liquid crystal composition showing good coating properties even when the support substrate has the low solvent resistance, and having the uniform alignment properties can be obtained.Type: ApplicationFiled: May 15, 2013Publication date: January 2, 2014Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATIONInventor: Yoshiharu HIRAI
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Publication number: 20140004328Abstract: A thermoplastic composition that comprises a thermotropic, liquid crystalline polymer and a combination of certain types of flow modifiers is provided. More particularly, one type of flow modifier that is employed in the composition is a functional compound (e.g., hydroxy-functional, carboxy-functional, etc.) that can react with the backbone of the polymer. In certain cases, for instance, the functional compound can initiate chain scission of the polymer, which reduces the molecular weight, and in turn, the melt viscosity of the polymer under shear. An additional non-functional compound is also employed to help reduce the melt viscosity to the desired “ultralow” levels without having a significant impact on the mechanical properties. The non-functional compound is, more specifically, an aromatic amide oligomer that can alter intermolecular polymer chain interactions without inducing chain scission to any appreciable extent, thereby further lowering the overall viscosity of the polymer matrix under shear.Type: ApplicationFiled: November 13, 2012Publication date: January 2, 2014Applicant: TICONA LLCInventors: Young Shin Kim, Kamlesh P. Nair
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Patent number: 8617419Abstract: 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-stabilized 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: GrantFiled: April 4, 2012Date of Patent: December 31, 2013Assignee: Merck Patent GmbHInventors: Sayuri Ohgiri, Masahiko Okamura, Yasushi Sugiyama, Hideo Ichinose
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Publication number: 20130342775Abstract: The present invention relates to a high scattering smectic liquid crystal material and display device using the same. In the present invention, a series of smectic A phase liquid crystals having compact arrangement of crystal domains or a series of smectic liquid crystal mixed materials having a degree of order higher than that of the smectic A phase and an optical texture different from that of the smectic A phase are obtained by mixing a smectic liquid crystal with an organic compound having a high optical anisotropy (?n) or mixing different types of smectic phases. When used in a smectic stable state liquid crystal display pattern, these materials have high scattering properties and can effectively improve the contrast of a smectic liquid crystal display device. The present invention also improves contrast when it used in a reflective smectic liquid crystal display device.Type: ApplicationFiled: December 30, 2011Publication date: December 26, 2013Inventors: Gang Sun, Wenlei Li, Huan Yin
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Patent number: 8609208Abstract: A liquid crystal medium having an optically isotropic liquid crystal phase is described, which has stability to heat, light and so on, a broad temperature range of liquid crystal phase, a large optical anisotropy and a large dielectric anisotropy. A liquid crystal composition is described, which includes an achiral component T and a chiral dopant and exhibits an optically isotropic liquid crystal phase. The achiral component T contains, as its first component, at least one compound selected from compounds represented by formula (1), wherein R1 is C1-10 alkyl, the rings A1 to A6 are 1,4-phenylene, Z1 to Z7 are single bonds, Y1 and Y2 are fluorine; X1 is halogen, and i, j, k, m, n, p and q are independently 0 or 1.Type: GrantFiled: October 31, 2012Date of Patent: December 17, 2013Assignees: JNC Corporation, JNC Petrochemical CorporationInventors: Shin-Ichi Yamamoto, Koki Sago, Takafumi Kuninobu, Yasuhiro Haseba
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Patent number: 8608977Abstract: The present invention relates to compounds of the general formula I in which the variables are each defined as follows: W is a (Y4-T2-)s(Y3-A2-)tY2—Z2 moiety, Z1, Z2 are each independently unreactive radicals as defined more specifically in the description or reactive radicals through which polymerization can be brought about, A1, A2 are each independently spacers as defined more specifically in the description, Y1 to Y5 are linking units as defined more specifically in the description, Y6 is a chemical single bond or —CO—, T1, T2 are each independently, as defined more specifically in the description, divalent saturated or unsaturated, optionally substituted and optionally fused iso- or heterocyclic radicals, Q is substituents as defined more specifically in the description, r, t are each independently 0 or 1, s is 0, 1, 2 or 3 and q is 0, 1, 2, 3 or 4.Type: GrantFiled: June 4, 2009Date of Patent: December 17, 2013Assignee: BASF SEInventors: Olivier Enger, Markus Hoffmann, Jochen Brill, Stephan Maurer, Bernd Ziegler
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Patent number: 8603358Abstract: 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: GrantFiled: April 1, 2010Date of Patent: December 10, 2013Assignee: DIC CorporationInventors: Takeshi Kuriyama, Shinichi Hirata, Shotaro Kawakami
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Patent number: 8603596Abstract: A liquid crystal display device includes an illuminator and a liquid crystal panel for performing displaying by using light which is emitted from the illuminator. The liquid crystal panel includes a pair of substrates and a liquid crystal layer provided therebetween. The liquid crystal layer is formed of a liquid crystal material which contains molecules having at least one of a carbon-carbon triple bond and a polycyclic group. The illuminator includes a light source causing primary generation of at least blue light, among other light which is used for displaying.Type: GrantFiled: April 25, 2012Date of Patent: December 10, 2013Assignee: Sharp Kabushiki KaishaInventor: Koichi Miyachi
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Patent number: 8592007Abstract: 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) or PSA (polymer sustained alignment) type.Type: GrantFiled: September 29, 2009Date of Patent: November 26, 2013Assignee: Merck Patent GmbHInventors: Achim Goetz, Erdal Durmaz, Malgorzata Rillich, Andreas Taugerbeck
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Patent number: 8592010Abstract: The invention relates to compensation films for liquid-crystal displays with additions of rod-shaped liquid crystals mentioned below, to polarizer plates which have at least one compensation film of this type, to liquid-crystal displays which have compensation films of the said type, and to processes for the production of the said compensation films, polarizer plates and liquid-crystal displays, to the use of the compounds described in greater detail below as additions to compensation films for liquid-crystal displays, and to further subject-matters of the invention which can be seen below.Type: GrantFiled: February 12, 2010Date of Patent: November 26, 2013Assignees: MERCK PATENT GmbH, LOFO HIGH TECH FILM GmbHInventors: Bernd Fiebranz, Bernhard Rieger, Detlef Pauluth, Axel Jansen, Ulrich Siemann, Ilona Herm
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Patent number: 8586152Abstract: 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: GrantFiled: September 1, 2010Date of Patent: November 19, 2013Assignees: JNC Corporation, JNC Petrochemical CorporationInventors: Yoshimasa Furusato, Takashi Hiraoka, Masayuki Saito
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Patent number: 8585923Abstract: 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: GrantFiled: December 15, 2011Date of Patent: November 19, 2013Assignee: Ueno Fine Chemicals Industry, Ltd.Inventors: Satoru Yonezawa, Hisanari Fujiwara, Tetsuhide Sawada
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Patent number: 8585924Abstract: 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: GrantFiled: May 10, 2012Date of Patent: November 19, 2013Assignees: JNC Corporation, JNC Petrochemical CorporationInventor: Masahide Kobayashi
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Patent number: 8580142Abstract: 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, a suitable elastic constant K33, a suitable and negative dielectric anisotropy, and an excellent compatibility with other liquid crystal compounds. The invention provides a liquid crystal composition containing the compound described above and having stability to heat, light and so forth, a small viscosity, a suitable optical anisotropy, a suitable and negative dielectric anisotropy, a suitable elastic constant K33, a low threshold voltage, a high maximum temperature of a nematic phase, and a low minimum temperature of the nematic phase. The invention also provides a liquid crystal display device having a short response time, a small power consumption, a low driving voltage, and a large contrast, and containing the composition described above which can be used in a large temperature range.Type: GrantFiled: September 1, 2008Date of Patent: November 12, 2013Assignees: JNC Corporation, JNC Petrochemical CorporationInventors: Teru Shimada, Masahide Kobayashi
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Patent number: 8580143Abstract: The present invention relates to a lyotropic chromonic liquid crystal composition, a method for manufacturing a lyotropic chromonic liquid crystal coating film and a lyotropic chromonic liquid crystal coating film manufactured thereby. The lyotropic chromonic liquid crystal composition of the present invention includes chromonic liquid crystal compounds and monomers each having opposing acid-base properties. Use of the lyotropic chromonic liquid crystal composition in the formation of optical films leads to improvements in electrical and optical properties such as mechanical strength, an insulating characteristic and a refractive index.Type: GrantFiled: November 5, 2009Date of Patent: November 12, 2013Assignees: Korea Institute of Industrial Technology, Industrial Cooperation Foundation Chonbuk National UniversityInventors: Seung Han Shin, Eu Gene Chang, Myong Hoon Lee, Kwang Un Jeong, Yun Ju Bae
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Patent number: 8580146Abstract: 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. Also, a liquid crystal composition having characteristics similar to these of the compound. Additionally, 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: GrantFiled: January 27, 2012Date of Patent: November 12, 2013Assignees: JNC Corporation, JNC Petrochemical CorporationInventor: Masahide Kobayashi
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Publication number: 20130292608Abstract: The present invention relates to a liquid-crystal medium which comprises a component A which consists of one or more compounds of the formula I in which the parameters have the respective meanings given in the claims or in the text, and to the corresponding, novel mesogenic compounds and to the preparation thereof. The present invention likewise relates to the use of these liquid-crystal media, in particular in components for high-frequency technology, and to components of this type which contain media according to the invention, and to the production and use of these components. The components according to the invention are suitable, in particular, as phase shifters in the microwave and millimetre wave region, for microwave and millimetre wave array antennae and very particularly for so-called tuneable “reflectarrays”.Type: ApplicationFiled: December 22, 2011Publication date: November 7, 2013Applicant: MERCK PATENT GMBHInventors: Atsutaka Manabe, Christian Jasper, Volker Reiffenrath, Elvira Montenegro, Detlef Pauluth, Dagmar Klass
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Patent number: 8568839Abstract: The invention relates to a liquid crystal composition comprising two or more species of liquid crystal compounds respectively having a polymerizable group, at least one species of which being a compound represented by formula (I) below, having a content of the compound of from 20% to 80% relative to the total mass of said two or more species of liquid crystal compounds.Type: GrantFiled: September 29, 2009Date of Patent: October 29, 2013Assignee: FUJIFILM CorporationInventors: Hiroshi Takeuchi, Mitsuyoshi Ichihashi, Ryo Hamasaki
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Publication number: 20130277611Abstract: The present invention relates to compounds containing at least three ring systems, at least one of which is a 2,6-naphthylene group, and two unsaturated bridging groups between the ring systems, and to the use of the compounds for high-frequency components, in particular antennae, especially for the gigahertz region. The liquid-crystalline media comprising these compounds serve, for example, for the phase shifting of microwaves for tuneable ‘phased-array’ antennae.Type: ApplicationFiled: December 14, 2011Publication date: October 24, 2013Applicant: MERCK PATENT GmbHInventors: Christian Jasper, Elvira Montenegro, Detlef Pauluth, Volker Reiffenrath, Atsutaka Manabe
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Patent number: 8562863Abstract: A glassy cholesteric liquid crystalline composition comprising compounds with a volume-expanding core bound to one or more hybrid chiral-nematic (or Ch) pendant moieties and a method of producing oriented films of such compounds. The Ch pendant moieties are comprised of chiral spacer groups connected to the core via linker groups and nematic groups linked to the chiral spacer groups. Thin-films of the composition are morphologically stable for extended periods of time. Also, the thin-films are able to selectively interact with light from the visible to near-IR wavelength range.Type: GrantFiled: September 11, 2009Date of Patent: October 22, 2013Assignee: The University of RochesterInventors: Shaw H. Chen, Chunki Kim
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Patent number: 8551358Abstract: The present invention relates to a liquid-crystalline medium, characterised in that it contains a polymerisable component (A) containing one more polymerisable compounds and a liquid-crystalline component (B) containing one more compounds of the general formula I in which R, rings A1 and A2, Z1, Z2, Y1, Y2, X0 and r are as defined in Claim 1.Type: GrantFiled: June 23, 2009Date of Patent: October 8, 2013Assignee: Merck Patent GmbHInventors: Seung-Eun Lee, Eun Young Kim, Dong-Mee Song, Kyung-Ah Park, Sang-Hyun Park, Eun-Kyu Lee
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Patent number: 8545717Abstract: The present invention relates to a composition comprising a curable dichroic dye and a curable liquid crystal compound, which are used to prepare an optical component that is vertically oriented to give a narrow viewing angle, to form an optical component, and an optical component comprising an optical component layer prepared using the same. There is provided a composition for forming an optical component comprising 0.1-90 parts by weight of a dichroic dye and 10-98.85 parts by weight of a curable liquid crystal compound, and there is also provided an optical component comprising an optical component layer in which a curable liquid crystal compound and a curable dichroic dye are vertically oriented.Type: GrantFiled: July 4, 2008Date of Patent: October 1, 2013Assignee: LG Chem, Ltd.Inventors: Yong Il Cho, Dae Hee Lee, Sin Young Kim, Hee Jean Lee, Su Young Ryu
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Publication number: 20130248761Abstract: 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, Z?, 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: ApplicationFiled: May 1, 2013Publication date: September 26, 2013Applicant: Merck Patent GmbHInventors: Norihiko Tanaka, Makoto Murakami, Shinji Nakajima
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Publication number: 20130240784Abstract: To provide a liquid crystal compound having a large negative dielectric anisotropy (??), and having at least one of characteristics such as a high stability to heat, light and so forth, a high clearing point, a suitable refractive index anisotropy (?n) and an excellent compatibility with other liquid crystal compounds, and an intermediate thereof. A solution is a compound represented by formula (1): wherein, for example, R1 and R2 are alkyl having 1 to 12 carbons, alkoxy having 1 to 12 carbons or alkenyl having 2 to 12 carbons; ring A1, ring A2 and ring A3 are 1,4-cyclohexylene or 1,4-phenylene; Z1, Z2 and Z3 are a single bond or —(CH2)2—; X is —CF2— or —CHF—; and l, m and n are 0 or 1.Type: ApplicationFiled: December 9, 2011Publication date: September 19, 2013Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATIONInventors: Kenji Hirata, Hiroki Ookawa
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Patent number: 8535768Abstract: Described is a liquid crystal composition which satisfies at least one of such characteristics as high upper limit temperature of the nematic phase, low lower limit temperature of the nematic phase, low viscosity, adequate optical anisotropy, large negative dielectric anisotropy, high resistivity, high stability to ultraviolet light and high stability to heat, or which has an adequate balance between at least two of the above-mentioned characteristics. Also described is an AM element having a short response time, high voltage holding ratio, high contrast ratio, long life and the like. The liquid crystal composition contains a specific compound having a large negative dielectric anisotropy and a low lower limit temperature as a first component, a specific compound having a low viscosity or a high upper limit temperature as a second component, and a specific compound having a polymerizable group as a third component. The AM element contains the composition.Type: GrantFiled: January 15, 2010Date of Patent: September 17, 2013Assignees: JNC Corporation, JNC Petrochemical CorporationInventor: Masayuki Saito
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Publication number: 20130234066Abstract: 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: ApplicationFiled: April 24, 2013Publication date: September 12, 2013Applicant: Merck Patent GmbHInventors: Norihiko TANAKA, Makoto MURAKAMI, Shinji NAKAJIMA
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Publication number: 20130230669Abstract: 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: ApplicationFiled: February 28, 2013Publication date: September 5, 2013Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATIONInventor: Yasuyuki SASADA
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Patent number: 8524117Abstract: 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: GrantFiled: February 29, 2012Date of Patent: September 3, 2013Assignee: Merck Patent GmbHInventors: Norihiko Tanaka, Makoto Murakami, Shinji Nakajima
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Patent number: 8512824Abstract: A composition includes at least one organic compound of a first type of the general formula I and at least one organic compound of a second type of the general structural formula II, wherein Core in formula I is a conjugated organic unit capable of forming a rigid rod-like macromolecule, Gk is a set of ionogenic side-groups providing solubility of the organic compound of the first type in a solvent and give rigidity to the rod-like macromolecule; and wherein Sys in formula II is an at least partially conjugated substantially planar polycyclic molecular system capable of forming board-like supramolecules via ?-?-interaction, and X, Y, Z and Q are substituents. The composition is capable of forming a lyotropic liquid crystal solution, which can form a solid retardation layer of biaxial type substantially transparent to electromagnetic radiation in the visible spectral range.Type: GrantFiled: August 14, 2009Date of Patent: August 20, 2013Assignee: Crysoptix KKInventors: Irina Kasianova, Ellina Kharatiyan
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Patent number: 8512596Abstract: A composition, including a liquid crystal polymer or oligomer having a terminal hydroxyl group, and a cross-linking agent including a bismaleimide compound, an epoxy resin or a combination thereof, wherein the liquid crystal polymer or oligomer is represented by Formula 1: Z1—(R1)m—(R2)n—Z2??(1), wherein R1 is represented by Formula 2: —X1—Ar1—Y1—??(2), wherein X1 and Y1 are each independently selected from the group consisting of O, CO and NR?, in which R? is independently selected from the group consisting of a hydrogen atom, a substituted or unsubstituted C1-C20 alkyl group, and a substituted or unsubstituted C6-C30 aryl group, and Ar1 includes at least one divalent aromatic or alicyclic organic group selected from the group consisting of Formula 3:Type: GrantFiled: December 8, 2009Date of Patent: August 20, 2013Assignees: Samsung Electronics Co., Ltd., Samsung Electro-Mechanics Co., Ltd., Samsung Fine Chemicals Co., Ltd.Inventors: Kwang Hee Kim, Myung Sup Jung, Chung Kun Cho, Jae Jun Lee, Kalinina Fedosya
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Patent number: 8501285Abstract: A liquid crystal medium, which has a liquid crystal phase over a wide temperature range, a large refractive index anisotropy, and a large dielectric anisotropy, and exhibits an optically isotropic liquid crystal phase, is provided. The liquid crystal medium is characterized by containing a liquid crystal compound having four benzene rings and a difluoromethyleneoxy group, and a chiral reagent, and exhibiting an optically isotropic liquid crystal phase.Type: GrantFiled: October 27, 2009Date of Patent: August 6, 2013Assignees: JNC Corporation, JNC Petrochemical CorporationInventors: Yasuhiro Haseba, Takafumi Kuninobu
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Patent number: 8501037Abstract: Disclosed is a compound having high optical anisotropy and high compatibility with a polymer resin, which is represented by Formula 1 and has at least one substituent introduced to a biphenyl mesogenic core. Also, a resin composition including the compound and a polymer resin, and an optical member including the resin composition are disclosed. In the case of an optical member obtained by using a polymer resin composition including the compound represented by Formula 1, there is no phase separation, and it is possible to achieve a required optical characteristic with only a small amount thereof.Type: GrantFiled: August 19, 2008Date of Patent: August 6, 2013Assignee: LG Chem, Ltd.Inventors: Kiyoul Lee, Minjin Ko, Myungsun Moon, Jaeho Cheong, Bumgyu Choi, Daeho Kang, YunBong Kim
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Publication number: 20130193377Abstract: 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; a liquid crystal composition having a suitable balance regarding at least two of the characteristics; and an AM device having a short response time, a large voltage holding ratio and contrast ratio, a long service life; a solution is a liquid crystal composition that has a negative dielectric anisotropy, and contains a specific compound having a large negative dielectric anisotropy as a first component and a specific compound having a small viscosity as a second component, and may contain a specific compound having a large negative dielectric anisotropy as a third component, and a liquid crystal display device including the composition.Type: ApplicationFiled: January 25, 2013Publication date: August 1, 2013Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATIONInventors: Kazuhiko SAIGUSA, Yoshimasa FURUSATO
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Publication number: 20130187092Abstract: 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: ApplicationFiled: March 8, 2013Publication date: July 25, 2013Applicant: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNGInventor: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
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Publication number: 20130183460Abstract: The invention relates to liquid-crystalline media which can be used, in particular, for electro-optical displays having active-matrix addressing based on the ECB effect and for IPS (in-plane switching) displays or FFS (fringe field switching) displays.Type: ApplicationFiled: December 20, 2012Publication date: July 18, 2013Applicant: MERCK PATENT GMBHInventor: MERCK PATENT GMBH
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Patent number: 8481129Abstract: A liquid crystal compound of Formula (I) is provided. In Formula (I), A is benzene, naphthalene, pyridine, furan, thiophene or a single bond, D is benzene, naphthalene, pyridine, furan, thiophene or a single bond, R1 and R2 are C1-10 alkyl, C1-10 alkoxy, fluoro or trifluoro methyl, E is benzene, naphthalene, pyridine, furan, thiophene or a single bond, W is —CO—O—, —O—CO—, —O—, —CH2—CH2—, —CH?CH—, —CH2—O— or a single bond, Z is benzene, naphthalene, pyridine, furan, thiophene or a single bond, Y is hydrogen, methyl, ethyl or propyl, m is 0, 1 or 2, p is 0, 1 or 2, r is 0, 1 or 2, q is 0, 1 or 2, and n is 0, 1, 2 or 3. The invention also provides a liquid crystal display and photochromic material including the compound.Type: GrantFiled: December 29, 2011Date of Patent: July 9, 2013Assignee: Industrial Technology Research InstituteInventors: Yi-Rong Wang, Chih-Lung Chin, Wan-Chi Chen, Kung-Lung Cheng, Shih-Hsien Liu
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Patent number: 8477268Abstract: Azo compounds represented by formula (1) (In the formula, R1 represents a lower alkoxy group with a sulfone group. R2-R5 each independently represents a hydrogen atom, lower alkyl group or lower alkoxy group. X is an optionally substituted amino group, optionally substituted benzoylamino group, optionally substituted phenylamino group, optionally substituted phenyl azo group or optionally substituted naphthotriazole group. m represents 1 or 2 and n represents 0 or 1.) and salts thereof.Type: GrantFiled: May 19, 2009Date of Patent: July 2, 2013Assignees: Nippon Kayaku Kabushiki Kaisha, Polatechno Co., Ltd.Inventors: Takuto Nishiguchi, Hiroaki Ohno, Takahiro Higeta, Yuichi Sadamitsu
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Patent number: 8475889Abstract: 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: GrantFiled: May 22, 2012Date of Patent: July 2, 2013Assignee: Merck Patent GmbHInventors: Melanie Klasen-Memmer, Matthias Bremer
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Patent number: 8475888Abstract: Provided is a liquid crystal compound having general physical properties necessary for a compound, stability to heat, light or the like, a wide liquid crystal phase temperature range, a high clearing point, an excellent compatibility with other liquid crystal compounds, a large refractive index anisotropy and a large dielectric anisotropy. Provided are a liquid crystal composition including the liquid crystal compound, and a liquid crystal display device containing the liquid crystal composition. The compound is represented by formula (1): wherein, for example, R1 is alkyl having 1 to 20 carbons; at least one of the rings A1 to A6 is pyrimidine-2,5-diyl or pyridine-2,5-diyl and the others are 1,4-cyclohexylene or 1,4-phenylene; Z1 to Z6 are a single bond; L1 to L4 is hydrogen or halogen; X1 is hydrogen, halogen, —C?N or alkyl having 1 to 10 carbons; and l, m, n, o, p and q are 0 or 1 and l+m+n+o+p+q=3.Type: GrantFiled: October 14, 2009Date of Patent: July 2, 2013Assignees: JNC Corporation, JNC Petrochemical CorporationInventors: Hiroyuki Tanaka, Kouki Sagou
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Patent number: 8475887Abstract: A liquid crystal medium having a wide temperature range of a liquid crystal phase, a large optical anisotropy, and a large dielectric anisotropy and having an optically isotropic liquid crystal phase is provided. The liquid crystal medium is characterized by containing a liquid crystal compound having a pyrimidine ring and a linking group —CF2O— and a chiral dopant, and exhibiting an optically isotropic liquid crystal phase.Type: GrantFiled: May 8, 2009Date of Patent: July 2, 2013Assignees: JNC Corporation, JNC Petrochemical CorporationInventors: Yasuhiro Haseba, Kohki Sago, Takafumi Kuninobu
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Patent number: 8470198Abstract: 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: July 16, 2009Date of Patent: June 25, 2013Assignee: Merck Patent GmbHInventors: Kevin Adlem, Owain Llyr Parri