Benzene Rings Linked By Direct Bond Patents (Class 252/299.66)
  • Patent number: 10550326
    Abstract: The present invention relates to liquid-crystalline media comprising one or more polymerisable compounds, preferably of formula P Pa-(Spa)s1-(A1-Z1)n1-A2-Q-A3-(Z4-A4)n2-(Spb)s2-Pb??P and one or more compounds selected from the group of compounds of formulae I, II, and III, in which the parameters have the meaning indicated in Claim 1, and to components comprising these media for high-frequency technology, in particular phase shifters and microwave array antennas.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: February 4, 2020
    Assignee: MERCK PATENT GMBH
    Inventors: Michael Wittek, Dagmar Klass
  • Patent number: 10435626
    Abstract: 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: Grant
    Filed: May 30, 2017
    Date of Patent: October 8, 2019
    Assignee: Merck Patent GmbH
    Inventors: Melanie Klasen-Memmer, Sabine Schoen
  • Patent number: 10358601
    Abstract: The present invention relates to liquid crystalline (LC) medium, to a method of its production and to the use of such LC media in polymer network liquid crystalline (PNLC) light modulation elements operated in the reverse mode. Furthermore, the present invention relates to such light modulation elements, as such, to the use of such light modulation elements as light shutters for transparent OLED displays, and to a method of production of such light modulation elements according to the present invention.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: July 23, 2019
    Assignee: Merck Patent GmbH
    Inventors: Hyun-Woo Bae, Dong-Mee Song, Hoo-Yong Lee, Jung-Min Lee, Yong-Kuk Yun
  • Patent number: 10197829
    Abstract: The present invention provides a liquid crystal display device that, with photo-alignment films, can maintain a favorable voltage holding ratio for a long period of time and prevent generation of image sticking and stains on the display screen. The liquid crystal display device includes: an active-matrix liquid crystal panel; and a backlight, the liquid crystal panel including a liquid crystal layer, paired substrates holding the liquid crystal layer in between, and alignment films disposed on the liquid crystal layer side surfaces of the respective substrates, the alignment films each being a photo-alignment film formed from a material exhibiting photo-alignment performance, the liquid crystal layer containing a liquid crystal material and a radical scavenger.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: February 5, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Koichi Miyachi, Masanobu Mizusaki, Tsuyoshi Okazaki, Hiroshi Tsuchiya, Isamu Miyake, Toshihiro Matsumoto
  • Patent number: 9671400
    Abstract: The present invention relates to compounds which are conjugates of two or more moieties capable of serving as substrates of an enzyme with peroxidase activity and one or more labels. The conjugate molecules of the invention are useful for detection of molecular targets, e.g. biological or chemical molecules, molecular structures, etc, in samples using a host of experimental schemes for detecting and visualizing such targets, e.g. immunohistochemistry (IHC), in situ hybridization (ISH), ELISA, Southern, Northern, and Western blotting, etc. The invention also relates to compositions comprising the conjugate molecules.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: June 6, 2017
    Assignee: Dako Denmark A/S
    Inventor: Jesper Lohse
  • Patent number: 9593279
    Abstract: The present invention relates to liquid-crystalline media comprising one or more compounds selected from the group of compounds of formulae I, II and III, in which the parameters R1-R3, Z21, Z31, Z32 and rings A11, A12, A13, A21, A22, A31, and A32 are as defined herein, and to components comprising these media for high-frequency technology, in particular phase shifters and microwave array antennas.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: March 14, 2017
    Assignee: MERCK PATENT GMBH
    Inventors: Michael Wittek, Dagmar Klass, Atsutaka Manabe, Christian Jasper, Volker Reiffenrath, Constanze Brocke, Detlef Pauluth
  • Patent number: 9567285
    Abstract: The present invention relates to polymerizable compounds, to processes and intermediates for the preparation thereof, to the use thereof for optical, electro-optical and electronic purposes, in particular in liquid-crystal (LC) media and LC displays having a polymer-stabilized blue phase, and in LC media for LC displays of the PS or PSA type (“polymer sustained” or “polymer sustained alignment”), and to LC media and LC displays comprising these compounds.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: February 14, 2017
    Assignee: Merck Patent GmbH
    Inventors: Axel Jansen, Thorsten Kodek, Helmut Haensel, Erdal Durmaz
  • Patent number: 9321960
    Abstract: A composition containing a compound represented by general formula (i) and a compound represented by general formula (ii): in the formulas, each of Xi1 to Xi6 independently represents a hydrogen atom, a fluorine atom or a chlorine atom, and each of Xii1 to Xii4 independently represents a hydrogen atom, a fluorine atom or a chlorine atom.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: April 26, 2016
    Assignee: DIC CORPORATION (TOKYO)
    Inventors: Joji Kawamura, Makoto Negishi, Masahiro Niwa
  • Patent number: 9181484
    Abstract: There is provided a compound having a good miscibility with another liquid crystal compound and having a combination of a low viscosity (?), high storage stability, and high T?i even after being used to produce a liquid crystal composition. In particular, it is a compound having a 2-fluorophenyloxymethane structure is provided. Since the compound having a 2-fluorophenyloxymethane structure is highly miscible with another liquid crystal compound, using the compound having a 2-fluorophenyloxymethane structure as a component of a liquid crystal composition enables a production of a liquid crystal composition which exhibits a liquid crystal phase at low viscosity and in a wide temperature range and which has a high storage stability and enables production of a liquid crystal display device which responds fast and which has excellent display characteristics.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: November 10, 2015
    Assignee: DIC CORPORATION
    Inventors: Kenta Tojo, Tetsuo Kusumoto, Masashi Osawa, Masakazu Kaneoya, Kiyofumi Takeuchi
  • Patent number: 9102869
    Abstract: A liquid crystal composition and an AM liquid crystal display device are described. The liquid crystal composition contains a specific compound having a small viscosity as a first component, may further contain a specific compound having a large negative dielectric anisotropy as a second component and a specific compound having a small viscosity as a third component, and has a negative dielectric anisotropy and a ratio of rotational viscosity to an elastic constant in the range of 4.2 GPa·s/N or lower. The liquid crystal display device includes the composition.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: August 11, 2015
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Yoshimasa Furusato, Masayuki Saito
  • Patent number: 9096795
    Abstract: 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: Grant
    Filed: April 19, 2010
    Date of Patent: August 4, 2015
    Assignee: Merck Patent GmbH
    Inventors: Andreas Taugerbeck, Alexander Hahn, Achim Goetz
  • Patent number: 9045682
    Abstract: 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: Grant
    Filed: May 1, 2013
    Date of Patent: June 2, 2015
    Assignee: Merck Patent GmbH
    Inventors: Norihiko Tanaka, Makoto Murakami, Shinji Nakajima
  • Patent number: 9039929
    Abstract: 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: Grant
    Filed: July 31, 2012
    Date of Patent: May 26, 2015
    Assignee: DIC CORPORATION
    Inventors: Masakazu Kaneoya, Kiyofumi Takeuchi, Masashi Osawa, Kenta Tojo, Tetsuo Kusumoto
  • Patent number: 9039930
    Abstract: A blue phase liquid crystal display panel and a fabricating method thereof are provided. A first substrate and a second substrate are provided, and then a blue phase liquid crystal composition is filled between the first substrate and the second substrate, wherein the blue phase liquid crystal composition includes a blue phase liquid crystal and a reactive monomer. Next, an irradiation process is performed to induce a polymerization reaction in the reactive monomer of the blue phase liquid crystal composition, wherein a light utilized in the irradiation process has a wavelength ranged from 200 nm to 350 nm.
    Type: Grant
    Filed: March 31, 2013
    Date of Patent: May 26, 2015
    Assignee: Au Optronics Corporation
    Inventors: Yi-Fen Lan, Ling-Yung Wang, Pu-Jung Huang, Cheng-Yeh Tsai
  • Patent number: 9028713
    Abstract: The present invention provides a mixture for liquid crystal medium and a liquid crystal display using the same. The mixture for liquid crystal medium comprises: at least one anisotropic liquid crystal material and a polymerizable monomer which will polymerize under UV irradiation. The weight percentage of the polymerizable monomer accounts for 0.1% to 1% of the total mixture for liquid crystal medium. In the mixture for liquid crystal medium and a liquid crystal display using the same according to the present invention, by using a polymerizable monomer which will polymerize under UV irradiation and the appropriate content ratio, the polymer bump with small size and good uniformity can be obtained within the mixture for liquid crystal medium after the polymerization, which avoids the bad liquid crystal alignment and the light spot occurred at the dark state of the liquid crystal panel, and then increases the response rapid of the liquid crystal panel to obtain high contrast ratio and stable mass production.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: May 12, 2015
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventors: Xing Feng, Xinhui Zhong
  • Publication number: 20150123032
    Abstract: The present invention provides a liquid crystal composition having a sufficiently low viscosity (?), a sufficiently low rotational viscosity (?1), a high elastic constant (K33), and a negative dielectric anisotropy (??) with a high absolute value without decreasing the refractive index anisotropy (?n) and the nematic phase-isotropic liquid phase transition temperature (TNi); and a liquid crystal display device with a VA mode or the like that uses the liquid crystal composition and has high display quality and high response speed. The liquid crystal display device that uses the liquid crystal composition of the present invention has a distinguished feature of high-speed response and is particularly useful as an active matrix driving liquid crystal display device. The liquid crystal display device is applicable to a VA mode, PSVA mode, PSA mode, IPS mode, or ECB mode liquid crystal display device.
    Type: Application
    Filed: June 26, 2013
    Publication date: May 7, 2015
    Applicant: DIC CORPORATION
    Inventors: Go Sudo, Shotaro Kawakami
  • Patent number: 9023238
    Abstract: The present invention relates to an optical switch element, comprising a liquid-crystalline medium for the temperature-dependent regulation of radiant energy flow. The invention furthermore relates to the use of the optical switch element for the regulation of radiant energy flow between interior spaces and the environment and for the regulation of the temperature of interior spaces. The invention furthermore relates to a liquid-crystalline medium, characterized in that it comprises 5-95% of a compound of the formula (I), in particular for use in the optical switch elements according to the invention.
    Type: Grant
    Filed: May 4, 2011
    Date of Patent: May 5, 2015
    Assignee: Merck Patent GmbH
    Inventor: Michael Junge
  • Patent number: 9023439
    Abstract: A nematic liquid crystal composition according to the invention is used for a liquid crystal display element for an active matrix drive for TV applications or the like for which a quick switching and a wide viewing angle are required. The liquid crystal composition has a negative dielectric anisotropy having a large absolute value and also has a sufficiently low viscosity. Therefore, the liquid crystal composition has excellent characteristic properties, that is, a quick switching, good display quality and a suppressed display defect, and is therefore suitable as a practical liquid crystal composition. Further, a liquid crystal display element produced using the liquid crystal composition can be used favorably as a liquid crystal display element of a VA type or the like.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: May 5, 2015
    Assignee: DIC Corporation
    Inventors: Gou Sudou, Shotaro Kawakami
  • Patent number: 9017572
    Abstract: A liquid crystal display includes a first substrate, a second substrate, and a liquid crystal layer. The first substrate includes a first insulating substrate, in which a pixel area is defined, a gate line formed on the first insulating substrate, a data line crossing the gate line, and a thin film transistor connected to the gate line and the data line. The second substrate is opposite to the first substrate. The liquid crystal layer is interposed between the first and second substrates and includes a liquid crystal composition with a nematic-isotropic phase transition temperature (Tni) of 79° C. or above.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: April 28, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Soojeong Huh, NamSeok Lee, Won-Gap Yoon, Soyoun Park, Si-Heun Kim
  • Publication number: 20150108402
    Abstract: The means concerns a liquid crystal composition that has negative dielectric anisotropy and that comprises a specific compound having a high stability to ultraviolet light as a first component, wherein the composition may comprise a specific compound having a high maximum temperature or a small viscosity as a second component, and a specific compound having a large negative dielectric anisotropy as a third component, and a specific compound having a polymerizable group as an additive component.
    Type: Application
    Filed: October 21, 2014
    Publication date: April 23, 2015
    Inventors: ERIKO KURIHARA, MASAYUKI SAITO, YOSHIMASA FURUSATO
  • Patent number: 9005720
    Abstract: Disclosed are liquid-crystal (LC) media for use in LC displays of the PS (polymer stabilized) or PSA (polymer sustained alignment) type which contain a liquid-crystal (LC) mixture that contains one or more compounds of formula I
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: April 14, 2015
    Assignee: Merck Patent GmbH
    Inventors: Achim Goetz, Melanie Klasen-Memmer, Stephan Derow, Sabine Schoen, Peter Best
  • Patent number: 9005721
    Abstract: Disclosed are liquid-crystal (LC) media for use in LC displays of the PS (polymer stabilized) or PSA (polymer sustained alignment) type which contain a liquid-crystal (LC) mixture that contains one or more compounds of formula I
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: April 14, 2015
    Assignee: Merck Patent GmbH
    Inventors: Achim Goetz, Melanie Klasen-Memmer, Stephan Derow, Sabine Schoen, Peter Best
  • Patent number: 9005479
    Abstract: The invention is to provide an AM device containing a liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of the nematic phase, a small viscosity, a large optical anisotropy, a large positive dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to and heat, or having a suitable balance regarding at least two of the characteristics, and the AM device having a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth; wherein a liquid crystal display device contains a liquid crystal composition having a positive dielectric anisotropy and containing a specific compound having a large positive dielectric anisotropy as a first component and a specific compound having a small viscosity as a second component.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: April 14, 2015
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Takayoshi Yanai, Masayuki Saito
  • Patent number: 8999459
    Abstract: The present invention relates to a liquid-crystal (LC) display of the PSA (polymer sustained alignment) type, and to polymerizable compounds and LC media for use in PSA displays.
    Type: Grant
    Filed: July 30, 2008
    Date of Patent: April 7, 2015
    Assignee: Merck Patent GmbH
    Inventors: Georg Bernatz, Melanie Klasen-Memmer, Matthias Bremer
  • Patent number: 8999196
    Abstract: The invention is to provide a new liquid crystal compound having a high clearing point, a good compatibility with other compounds, a small viscosity, and a high stability to heat, light and so forth; compound (1) is provided: R1CF2nR2??(1) wherein, for example, R1 is alkyl having 4 to 10 carbons or —(CH2)2—CH?CH2, R2 is alkyl having 2 to 10 carbons, n is 8, and R1 and R2 are not allowed to be straight-chain alkyl having an identical number of carbons.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: April 7, 2015
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Hiroyuki Tanaka, Sayaka Fujimori
  • Patent number: 8999461
    Abstract: The present invention relates to an electro-optical light modulation element and to electro-optical displays and display systems, such as television screens and computer monitors, containing elements of this type. The light modulation elements according to the invention contain a mesogenic modulation medium which is in the isotropic phase during operation of the light modulation elements and are particularly distinguished by very short response times in addition to good contrast and low viewing-angle dependence. The mesogenic modulation media used in the electro-optical light modulation elements are likewise a subject-matter of the present invention.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: April 7, 2015
    Assignee: Merck Patent GmbH
    Inventors: Michael Heckmeier, Achim Gotz
  • Patent number: 8999460
    Abstract: The invention relates to compounds of the formula I, and to a liquid-crystalline medium, preferably having a nematic phase and negative dielectric anisotropy, which comprises one or more compounds of formula I, defined herein, for use in an electro-optical display, particularly in an active-matrix display based on the VA, ECB, PALO, FFS or IPS effect, and to the use of the compounds of the formula I for the stabilization of a liquid-crystalline medium which comprises one or more compounds of the formula II and one or more compounds of the formulae III-1 to III-4, defined herein.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: April 7, 2015
    Assignee: MERCK PATENT GmbH
    Inventors: Mark Goebel, Rocco Fortte, Detlef Pauluth
  • Patent number: 8993076
    Abstract: The present invention provides a liquid crystal additive, a liquid crystal composition and a liquid crystal panel thereof. The liquid crystal additive of the present invention has a higher clear point, so that adding the liquid crystal additive into a liquid crystal composition of a liquid crystal panel can omit the process of forming alignment films to reduce manufacturing costs and time of liquid crystal panels; meanwhile, the MURA phenomenon due to the different effects of liquid crystal molecules and liquid crystal reactive monomers on alignment films is avoided, so as to improve the uniformity of liquid crystal panel.
    Type: Grant
    Filed: November 23, 2012
    Date of Patent: March 31, 2015
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventor: Houng-Chieh Lu
  • Patent number: 8980384
    Abstract: A liquid crystal composition of the present invention has a liquid phase over a wide temperature range, low viscosity, good solubility at a low temperature, high resistivity and voltage holding ratio, and stability to heat and light, and can thus provide, in high yield, a liquid crystal display device having good display quality and causing little display defects such as image sticking, dropping marks, and the like. A liquid crystal display device using the liquid crystal composition of the present invention is useful, particularly useful for a liquid crystal display device for active matrix driving, because both fast response and suppression of display defects are achieved, and the liquid crystal display device can be applied to a liquid crystal display device for a VA mode, a PSVA mode, or a TN mode.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: March 17, 2015
    Assignee: DIC Corporation
    Inventor: Jouji Kawamura
  • Patent number: 8980383
    Abstract: A method of making a wide temperature-range smectic liquid crystal material comprises taking a wide temperature-range nematic mixture and doping this with a mesogenic silicon-containing material. Aspects of the invention provide wide temperature-range smectic materials and devices using the smectic materials.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: March 17, 2015
    Assignee: Cambridge Enterprise Limited
    Inventors: Harry J. Coles, Damian J. Gardiner
  • Patent number: 8974693
    Abstract: The present invention relates to a liquid-crystalline medium, characterized in that it contains a polymerizable component (A) containing one more polymerizable 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: Grant
    Filed: August 20, 2013
    Date of Patent: March 10, 2015
    Assignee: Merck Patent GmbH
    Inventors: Seung-Eun Lee, Eun Young Kim, Dong-Mee Song, Kyung-Ah Park, Sang-Hyun Park, Eun-Kyu Lee
  • Patent number: 8974694
    Abstract: A cholesteric liquid-crystal composition is described, which contains a liquid-crystal component and a chiral agent, and has a selective reflection wavelength in the range of 400 nm to 800 nm at 25° C.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: March 10, 2015
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Yasuhiro Haseba, Koki Sago, Takafumi Kuninobu, Shin-Ichi Yamamoto
  • Publication number: 20150060732
    Abstract: An object is to provide a liquid crystal compound satisfying at least one of physical properties such as a high stability to heat and light, 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, a liquid crystal composition containing the compound, and a liquid crystal display device including the composition. A solution is a compound represented by formula (1). In formula 1, R1 is alkyl having 1 to 10 carbons, for example; ring A1 and ring A2 are independently 1,4-cyclohexylene or 1,4-phenylene; Z1 and Z2 are independently a single bond or —CF2O—; L1 and L2 are halogen; and a is 1 or 2.
    Type: Application
    Filed: August 27, 2014
    Publication date: March 5, 2015
    Applicants: JNC PETROCHEMICAL CORPORATION, JNC CORPORATION
    Inventors: Yasuyuki GOTOH, Masakazu YANO
  • Patent number: 8968840
    Abstract: 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: Grant
    Filed: June 28, 2011
    Date of Patent: March 3, 2015
    Assignee: Merck Patent GmbH
    Inventors: Melanie Klasen-Memmer, Sabine Schoen
  • Patent number: 8968598
    Abstract: 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 suitable optical anisotropy, a large dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or having a suitable balance regarding at least two of the characteristics is provided; and an AM device having a short response time, a suitable pretilt, a large voltage holding ratio, a large contrast ratio, a long service life and so forth is provided. A solution is a liquid crystal composition containing a specific compound having a high maximum temperature and a large dielectric anisotropy as a first component and a polymerizable compound as a second component, and a liquid crystal display device including the composition.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: March 3, 2015
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Masayuki Saito, Yoshinari Matsumura
  • Patent number: 8968597
    Abstract: 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: Grant
    Filed: August 6, 2013
    Date of Patent: March 3, 2015
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Yoshimasa Furusato, Subaru Kawasaki, Eriko Kurihara
  • Publication number: 20150053891
    Abstract: A composition contains three or more compounds represented by general formula (i) below. (In the formula, Ri1 represents an alkyl group having 1 to 8 carbon atoms, and one or nonadjacent two or more —CH2— in the alkyl group may be each independently substituted by —CH?CH—, —C?C—, —O—, —CO—, —COO—, or —OCO—; mi1 represents 1 or 2; Ai1 represents a 1,4-cyclohexylene group or a 1,4-phenylene group which may have a fluorine atom or a chlorine atom substituted for a hydrogen atom, when mi1 represents 1, Ai1 represents a 1,4-phenylene group which may have a fluorine atom or a chlorine atom substituted for a hydrogen atom, and when mi1 represents 2 and a plurality of Ai1 are present, Ai1 may be the same or different, and Xi1 represents a hydrogen atom, a fluorine atom, or a chlorine atom.
    Type: Application
    Filed: December 27, 2012
    Publication date: February 26, 2015
    Applicant: DIC Corporation
    Inventors: Joji Kawamura, Makoto Negishi, Masahiro Niwa
  • Patent number: 8961823
    Abstract: 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 are —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: Grant
    Filed: December 20, 2012
    Date of Patent: February 24, 2015
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Yasuyuki Gotoh, Mayumi Goto
  • Patent number: 8962104
    Abstract: The present invention provides a liquid crystal display panel that suppresses the temperature dependence of transmittance-gradation characteristics and thus overcomes problems in which significant changes in transmittance-gradation characteristics are caused by the effects of environmental temperature and a light source to lead to the degradation of display performance, and a liquid crystal display device including the liquid crystal display panel. The liquid crystal display panel of the present invention includes a liquid crystal medium containing a plurality of liquid crystal compounds each having a negative dielectric constant anisotropy, the liquid crystal medium being held between a first substrate and a second substrate that are located opposite each other, and a side of each of the substrates in contact with the liquid crystal medium having vertical alignment properties for the liquid crystal compounds.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: February 24, 2015
    Assignees: Sharp Kabushiki Kaisha, DIC Corporation
    Inventors: Toshihiro Matsumoto, Yuichi Kawahira, Masayuki Kanehiro, Shoutarou Kawakami, Gou Sudou
  • Patent number: 8961824
    Abstract: 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: Grant
    Filed: July 18, 2013
    Date of Patent: February 24, 2015
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Takayoshi Yanai, Norikatsu Hattori, Hiroyuki Tanaka
  • Patent number: 8962102
    Abstract: The invention relates to compounds of the formula I, and to a liquid-crystalline medium, preferably having a nematic phase and negative dielectric anisotropy, which comprises one or more compounds of formula I, defined herein, for use in an electro-optical display, particularly in an active-matrix display based on the VA, ECB, PALO, FFS or IPS effect, and to the use of the compounds of the formula I for the stabilization of a liquid-crystalline medium which comprises one or more compounds of the formula II and one or more compounds of the formulae III-1 to III-4, defined herein.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: February 24, 2015
    Assignee: MERCK PATENT GmbH
    Inventors: Mark Goebel, Rocco Fortte, Detlef Pauluth
  • Patent number: 8962105
    Abstract: To provide a liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature 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, and so forth. To provide 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 and a specific compound having a large negative dielectric anisotropy and a low minimum temperature as a second component, and may contain a specific compound having a small viscosity or a large maximum temperature as a third component, and a liquid crystal display device includes the composition.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: February 24, 2015
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Yoshimasa Furusato, Eriko Kurihara, Masayuki Saito
  • Publication number: 20150048276
    Abstract: The invention relates to a liquid-crystalline medium comprising at least one compound of the formula I, in which R1 has the meanings indicated in Claim 1, and to the use thereof in liquid-crystalline media and in electro-optical liquid-crystal displays.
    Type: Application
    Filed: August 13, 2014
    Publication date: February 19, 2015
    Applicant: Merck Patent GmbH
    Inventors: Mark GOEBEL, Lars LIETZAU, Sabine SCHOEN, Andreas POHLE
  • Patent number: 8956550
    Abstract: The present invention relates to a liquid-crystalline medium, characterized in that it contains a polymerizable component (A) containing one more polymerizable 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: Grant
    Filed: August 20, 2013
    Date of Patent: February 17, 2015
    Assignee: Merck Patent GmbH
    Inventors: Seung-Eun Lee, Eun Young Kim, Dong-Mee Song, Kyung-Ah Park, Sang-Hyun Park, Eun-Kyu Lee
  • Patent number: 8956705
    Abstract: A system having a ferroelectric liquid host material and a small amount of polymer additive is provided. In an embodiment, the polymer additive improves the physical characteristics of the system. In an embodiment, the system can be used in FLC applications.
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: February 17, 2015
    Assignees: California Institute of Technology, LC Vision, LLC
    Inventors: Julia A. Kornfield, Michael Wand, Zuleikha Kurji
  • Patent number: 8956549
    Abstract: 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: Grant
    Filed: August 20, 2013
    Date of Patent: February 17, 2015
    Assignee: Merck Patent GmbH
    Inventors: Seung-Eun Lee, Eun Young Kim, Dong-Mee Song, Kyung-Ah Park, Sang-Hyun Park, Eun-Kyu Lee
  • Publication number: 20150034874
    Abstract: Provided is a novel material included in a liquid crystal composition that can be used in various liquid crystal display devices. A trifluorophenyl derivative represented by General Formula (G1). In General Formula (G1), Ar1 represents an arylene group having 6 to 12 carbon atoms, a cycloalkylene group having 3 to 12 carbon atoms, or a cycloalkenylene group having 3 to 12 carbon atoms; m represents 1 or 2; and R1 represents hydrogen, an alkyl group having 2 to 11 carbon atoms, or an alkoxy group having 2 to 11 carbon atoms.
    Type: Application
    Filed: July 28, 2014
    Publication date: February 5, 2015
    Inventors: Momoko KATO, Yuko KAWATA, Yasuhiro NIIKURA, Tetsuji ISHITANI
  • Patent number: 8945420
    Abstract: The invention relates to an electro-optical liquid-crystal display which contains, as dielectric, a liquid-crystalline medium having negative dielectric anisotropy and includes a backlight which essentially only emits light having a wavelength of 400 nm or more or has, between the liquid-crystal layer and the backlight, a cut-off filter which essentially only allows light having a wavelength of 420 nm or more to pass through. In particular, the liquid-crystalline medium comprises a) a (first) dielectrically negative component (component A) which consists of one or more dielectrically negative compounds of the formula I in which the parameters have the meanings indicated in claim 2, and a further (second) dielectrically negative component (component B).
    Type: Grant
    Filed: January 17, 2011
    Date of Patent: February 3, 2015
    Assignee: Merck Patent GmbH
    Inventors: Atsutaka Manabe, Kazuaki Tarumi, Hubert Spreitzer, Axel Jansen, Melanie Klasen-Memmer
  • Patent number: 8940184
    Abstract: 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 sustained”) or PSA (“polymer sustained alignment”) type.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: January 27, 2015
    Assignee: MERCK PATENT GmbH
    Inventors: Andreas Taugerbeck, Achim Goetz
  • Patent number: 8940185
    Abstract: To provide a novel liquid crystal compound having general physical properties necessary for the compound, namely, stability to heat, light and so forth, a wide temperature range of a liquid crystal phase, a high clearing point, a good compatibility with other compounds, a large refractive index anisotropy, a large dielectric anisotropy and a small viscosity. The liquid crystal compound is provided as compound (1): wherein, for example, R1 is alkyl having 1 to 20 carbons; ring A1 and ring B1 are 1,4-cyclohexylene or 1,4-phenylene; Z1 and Z2 are a single bond, —CH2CH2—, —CH?CH— or —C?C—; L1 is fluorine; L2, Y1 and Y2 are hydrogen, fluorine or chlorine; and X1 is halogen, —C?N or alkyl having 1 to 10 carbons, and in the alkyl, arbitrary —CH2— may be replaced by —O— or —S—, and m is 1 and n is 0.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: January 27, 2015
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventor: Hiroyuki Tanaka