Cell Containing Liquid Crystal Of Specific Composition Patents (Class 349/182)
  • Patent number: 10503017
    Abstract: A liquid crystal display including: a first substrate; a second substrate configured to overlap the first substrate and to be separate from the first substrate; a liquid crystal layer disposed between the first substrate and the second substrate and including a liquid crystal molecule; a first alignment layer disposed between the first substrate and the liquid crystal layer; a second alignment layer disposed between the second substrate and the liquid crystal layer; and a plurality of protrusions disposed between the first alignment layer and the liquid crystal layer, wherein at least one protrusion of the plurality of protrusions includes an orientation polymer including a polymerized reactive mesogen, the first alignment layer includes a photo-reactive group, and the liquid crystal layer includes a photoreaction initiator.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: December 10, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae Bum Cho, Hyeok Jin Lee, Oh Jeong Kwon, Ka Eun Kim, Su Jin Kim
  • Patent number: 10459291
    Abstract: A liquid crystal display includes: a first substrate, a second substrate overlapping the first substrate, a liquid crystal layer positioned between the first substrate and the second substrate and including a plurality of liquid crystal molecules, a first alignment layer positioned between the first substrate and the liquid crystal layer, a second alignment layer positioned between the second substrate and the liquid crystal layer, and a plurality of protrusions positioned at at least one of between the first alignment layer and the liquid crystal layer and between the second alignment layer and the liquid crystal layer, wherein at least one among the plurality of protrusions includes a polymer of a reactive mesogen, and the reactive mesogen is represented by Chemical Formula 1: Pa—A1—OCH2nO—A2—Pb??Chemical Formula 1.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: October 29, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyeok Jin Lee, Oh Jeong Kwon, Ka Eun Kim, Soo Dong Kim, Su Jin Kim, Jin Won Kim, Jae Bum Cho, Baek Kyun Jeon
  • Patent number: 9947739
    Abstract: An array substrate and a display device are provided. The array substrate includes: a gate driving circuit, no pixel electrode layer being provided on a position of the array substrate corresponding to the gate driving circuit, the array substrate being made of a flexible material, wherein, the gate driving circuit is disposed on a position of a central axis of the array substrate and extends along a direction of the central axis; the gate driving circuit is configured for providing a driving signal to a gate line of the array substrate.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: April 17, 2018
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Song Song, Kazuyoshi Nagayama, Shiming Shi
  • Patent number: 9650573
    Abstract: The present invention relates a liquid crystalline medium comprising one or more liquid crystalline compounds, one or more dichroic dyes, and one or more compounds capable of promoting or inducing homeotropic alignment to the adjacent liquid crystal medium at a given temperature selected from the group of compounds (A), having a three-dimensional structure, a molecular weight of greater than 450 Da, and one or more anchor groups, or the group of organic compounds (B) having one or more ring groups, and one or more anchor groups. The invention furthermore relates to a temperature-reactive device for the regulation of light transmission, containing such liquid crystalline medium, and a process for the temperature-dependent control of light transmission through the layer of such liquid-crystalline medium.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: May 16, 2017
    Assignee: Merck Patent GmbH
    Inventors: Graziano Archetti, Michael Junge, Ming-Chou Wu
  • Patent number: 9341893
    Abstract: 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, a liquid crystal layer provided between the pair of substrates, and a pair of alignment films provided on sides of the pair of substrates facing the liquid crystal layer. At least one of the alignment films is a photo-alignment film which is imparted with an orientation regulating force through a photo-alignment treatment, and the illuminator includes a light source causing primary generation of at least blue light, among other light which is used for displaying.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: May 17, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Koichi Miyachi
  • Patent number: 9296950
    Abstract: A liquid crystal composition has a nematic phase, and contains a specific tricyclic compound having a large dielectric anisotropy as a first component and a specific bicyclic compound having a small viscosity as a second component, and may contain a specific compound having a high maximum temperature or a large dielectric anisotropy as a third component, and a specific compound having a high maximum temperature or a small viscosity as a fourth component, and a liquid crystal display device includes the composition.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: March 29, 2016
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Taketo Maeda, Yoshimasa Furusato
  • Patent number: 9298044
    Abstract: A liquid crystal display includes a first substrate and a second substrate facing each other, a first spacer and a second spacer on the first substrate and have different heights, and a liquid crystal layer between the first substrate and the second substrate and including a plurality of a liquid crystal molecule. The first spacer and the second spacer include a photosensitive material defining a maximum height of a spacer with respect to a predetermined a cross-section width dimension of the spacer, and heights less than the maximum height with respect to cross-section width dimensions larger than the predetermined cross-section width dimension. The first spacer and the second spacer can include a black pigment.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: March 29, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Gwan-Soo Kim, Chul Huh, Jin-Seuk Kim, Sang-Hun Lee, Yui-Ku Lee
  • Patent number: 9238775
    Abstract: The present invention relates to a switch element, which is thermoresponsive and which switches between a less transmissive state for radiant energy and a more transmissive state for radiant energy, and which comprises a liquid-crystalline medium. The invention furthermore relates to the use of the 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 a compound of the formula (I), in particular for use in the switch elements according to the invention.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: January 19, 2016
    Assignee: MERCK PATENT GMBH
    Inventor: Michael Junge
  • Patent number: 9079836
    Abstract: It is an object of the present invention to provide a compound having both a low viscosity (?) and good miscibility with another liquid crystal compound; it is another object of the present invention to provide a method for producing the same. It is another object of the present invention to provide a liquid crystal composition containing such a compound; it is another object of the present invention to provide a liquid crystal display device in which the compound is used. There are provided a compound represented by Formula (1), a liquid crystal composition containing such a compound, a liquid crystal device in which this liquid crystal composition is used, a method for producing the compound represented by Formula (1), and compounds represented by Formulae (4) and (5) that are materials used in such a method.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: July 14, 2015
    Assignee: DIC CORPORATION
    Inventors: Kenta Tojo, Tetsuo Kusumoto
  • Publication number: 20150138493
    Abstract: A liquid crystal display device includes a first substrate, a second substrate facing the first substrate, and a liquid crystal layer between the first and second substrates. The liquid crystal layer includes a liquid crystal composition including an alkenyl liquid crystal and an antioxidant component including at least one selected from an antioxidant and a derivative thereof. In an embodiment, the antioxidant component is present in an amount of greater than 0 ppm and equal to or less than about 10,000 ppm relative to the total weight of the liquid crystal composition.
    Type: Application
    Filed: January 23, 2015
    Publication date: May 21, 2015
    Inventors: Jihong BAE, Kyungmin KIM, Min-Jae KIM, Min-Hee KIM, Euna KIM, Joon-Hyung PARK, Keunchan OH, Jinhyeong LEE
  • Patent number: 9028714
    Abstract: The invention relates to liquid-crystalline compounds of the formula (I) having a —CF2O— bridge. The invention also relates to liquid-crystalline media prepared therewith and to liquid-crystal display devices (LC displays) containing these media. This kind of compounds has the excellent characteristics including a large dielectric anisotropy, fast response time and high clearing point, and good miscibility at low temperature in the same time which has important significance in new TFT LC mixture.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: May 12, 2015
    Assignee: Shijiazhuang Chengzhi Yonghua Display Materials Co., Ltd.
    Inventors: Kai Xu, Jing-yi Feng, Zi-qian Shi, Qing Cui, Xi-zhe Yan, Kui Wang, Jia-lin Chen
  • 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
  • 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: 9011714
    Abstract: An object is to provide a novel liquid crystal composition that can be used for a variety of liquid crystal devices. Particularly, a novel liquid crystal composition is used to achieve a reduction in driving voltage of a liquid crystal element and a reduction in power consumption of a liquid crystal display device. The liquid crystal composition includes a polymerizable monomer represented by the general formula (G1), a nematic liquid crystal, and a chiral agent. In the general formula (G1), n and m are individually an integer from 1 to 20, and R1 and R2 individually represent hydrogen or a methyl group.
    Type: Grant
    Filed: May 4, 2012
    Date of Patent: April 21, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Makoto Ikenaga, Daisuke Kubota, Takahiro Yamamoto, Sachiko Kawakami
  • 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: 9005478
    Abstract: 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; R3 is hydrogen, halogen, cyano, alkoxy, NHCOR9, NHSO2R9, COOR9, OCOR9, aryl, alkyl, alkenyl, cycloalkyl, or heterocyclic all either substituted or unsubstituted; R4 is hydrogen, alkyl, aryl, alkenyl, cycloalkyl, or heterocyclic all either substituted or unsubstituted; R5, R6, R7, and R8 are independently hydrogen, halogen, cyano, alkoxy, NHCOR9, NHSO2R9, COOR9, OCOR9, aryl, alkyl, alkenyl, cycloalkyl, alkoxyaryl or heterocyclic all either substituted or unsubstituted, or combine with each other, or R5 can combine with R4 to form a carbocyclic or heterocyclic ring; R9 and R10 are independently alkyl, alkoxy, aryl, naphthyl, styryl, alkenyl, cycloalkyl, alko
    Type: Grant
    Filed: January 6, 2014
    Date of Patent: April 14, 2015
    Assignees: Kent Displays Incorporated, Kent State University
    Inventors: Donald R. Diehl, Erica N. Montbach
  • 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: 8999465
    Abstract: The present invention provides a liquid crystal display device in which display defects are not easily generated even when an alignment film is not formed. The liquid crystal display device of the present invention includes a pair of substrates; and a liquid crystal layer that is held between the pair of substrates, wherein both substrates of the pair of substrates do not substantially include an alignment film, at least one substrate of the pair of substrates includes a polymer layer that controls the alignment of liquid crystal molecules adjacent thereto, the polymer layer is formed by polymerization of monomers of at least one kind included in a liquid crystal layer composition, and the monomers of at least one kind contain a compound represented by the following formula (1): (wherein A represents an acrylate group, a methacrylate group, an ethacrylate group, a vinyl group, or an allyl group; a represents 0 or 1; and m represents a natural number of 4 to 12).
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: April 7, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Youhei Nakanishi, Takeshi Noma
  • 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: 8994910
    Abstract: In a display panel and a method of manufacturing the display panel, the display panel includes a display substrate including a first electrode and a second electrode insulated from the first electrode and disposed on the first electrode, an opposite substrate including a third electrode facing the second electrode, and a liquid crystal layer interposed between the display substrate and the opposite substrate. The liquid crystal layer includes liquid crystal molecules, a reactive mesogen polymer, and nano-rods.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: March 31, 2015
    Assignees: Samsung Display Co., Ltd., Institute for Research & Industry Cooperation, PNU
    Inventors: Soon-Joon Rho, Hyeok-Jin Lee, Ji-Hong Bae, Jun-Ha Park, Hye-Lim Jang, Tae-Hoon Yoon, Dong-Han Song, Ki-Han Kim, Jung-Wook Kim
  • 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
  • Patent number: 8968599
    Abstract: A cholesteric liquid crystal. The liquid crystal includes a metal acetylide, of which the metal is a square, planar transition metal. The metal acetylide includes first and second acylphosphine ligands and first and second phenyl acetylene ligands. Each of the first and second phenyl acetylene ligands have a meta- or para-substituent, which are selected from the group consisting of H, F, CN, OCH3, C?C—C6H5,(COO—C34H50O2), and COO—C5H10—C))—C34H50O2.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: March 3, 2015
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Thomas M. Cooper, Ronald F. Ziolo, Aaron R. Burke, Anatoliy V. Glushchenko
  • Patent number: 8968842
    Abstract: A liquid crystal display device includes a first substrate, a second substrate facing the first substrate, and a liquid crystal layer between the first and second substrates. The liquid crystal layer includes a liquid crystal composition including an alkenyl liquid crystal and an antioxidant component including at least one selected from an antioxidant and a derivative thereof. In an embodiment, the antioxidant component is present in an amount of greater than 0 ppm and equal to or less than about 10,000 ppm relative to the total weight of the liquid crystal composition.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: March 3, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jihong Bae, Kyungmin Kim, Min-Jae Kim, Min-Hee Kim, Euna Kim, Joon-Hyung Park, Keunchan Oh, Jinhyeong Lee
  • 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
  • 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: 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: 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: 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: 8956551
    Abstract: A liquid crystal compound having a high stability to heat, light and so forth, 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 solubility in other liquid crystal compounds, a liquid crystal composition containing the compound, and a liquid crystal display device including the composition. The compound is represented by formula (1): wherein, for example, R1 is fluorine or alkyl having 1 to 10 carbons; ring A1 and ring A2 are 1,4-phenylene, or 1,4-phenylene in which at least one of hydrogen is replaced by fluorine; Z1, Z2 and Z3 are a single bond; L1 and L2 are hydrogen or fluorine; X1 is fluorine or —CF3; and m is 1, and n is 0.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: February 17, 2015
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Yasuyuki Gotoh, Keiji Kimura
  • 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
  • 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: 8945692
    Abstract: A method of manufacturing a liquid crystal display device with which response characteristics are able to be easily improved without using major equipment is provided. The method of manufacturing a liquid crystal display device includes steps of forming a first alignment film 22 including a polymer compound having a crosslinkable functional group as a side chain on one substrate of a pair of substrates 20 and 30; forming a second alignment film 32 on the other substrate of the pair of substrates 20 and 30; arranging the pair of substrates 20 and 30 so that the first alignment film 22 and the second alignment film 32 are opposed to each other, and sealing a liquid crystal layer 40 containing a liquid crystal molecule 41 having negative dielectric constant anisotropy between the first alignment film 22 and the second alignment film 32; and bridging the polymer compound to give pretilt to the liquid crystal molecule 41 after sealing the liquid crystal layer 40.
    Type: Grant
    Filed: September 23, 2010
    Date of Patent: February 3, 2015
    Assignee: Sony Corporation
    Inventors: Shunichi Suwa, Yuichi Inoue, Ryo Ogawa, Tsuyoshi Kamada, Masashi Miyakawa, Tadaaki Isozaki, Masahiko Nakamura
  • 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
  • Publication number: 20150021520
    Abstract: Disclosed is a liquid crystal compound. The compound has a general structural formula as shown by formula I. Such a compound has good thermal and UV stability, large positive dielectric anisotropy ??, and can achieve a low threshold voltage when used in optics, thereby having great significance to the fast response of display devices, and therefore being very suitable for formulating a liquid crystal mixture. A liquid crystal mixture containing such a liquid crystal unit can be applied to various display devices, and is especially suitable for TN-TFT and STN display devices, but can also be used in IPS (in-plane switching) and VA (vertically aligned) display devices.
    Type: Application
    Filed: November 21, 2012
    Publication date: January 22, 2015
    Applicant: Shijiazhuang Chengzhi Yonghua Display Materials Co., Ltd.
    Inventors: Guoliang Yun, Gang Wen, Zhian Liang, Ruimao Hua, Kui Wang, Xing Zhang, Zhiguo Xia, Yaohua Han
  • Patent number: 8932484
    Abstract: The liquid crystal composition has a negative dielectric anisotropy, and contains a specific bicyclic compound having a large optical anisotropy and negative dielectric anisotropy as a first component and a specific tricyclic compound having 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 and a small viscosity as a fourth component and a specific compound having a large dielectric anisotropy as a fifth component, and the liquid crystal display device includes the composition.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: January 13, 2015
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Norikatsu Hattori, Kazuhiko Saigusa
  • Patent number: 8920674
    Abstract: 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: Grant
    Filed: September 14, 2012
    Date of Patent: December 30, 2014
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Takayoshi Yanai, Norikatsu Hattori, Hiroyuki Tanaka
  • Patent number: 8865272
    Abstract: In an embodiment of the present disclosure, a liquid crystal display is provided. The liquid crystal display includes an upper substrate, a lower substrate opposite to the upper substrate, and a liquid crystal layer disposed between the upper substrate and the lower substrate, wherein the liquid crystal layer includes a first chiral compound and a second chiral compound, and the first chiral compound and the second chiral compound are enantiomeric and separated from each other.
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: October 21, 2014
    Assignee: Industrial Technology Research Institute
    Inventors: Yi-Rong Wang, Chih-Lung Chin, Wan-Chi Chen, Kung-Lung Cheng, Shih-Hsien Liu
  • Patent number: 8848158
    Abstract: A reverse mode liquid crystal display device, including: a first substantially transparent substrate having an electrically conductive material associated therewith; a second substrate having an electrically conductive material associated therewith; an insulating layer associated with at least one of the first and second substrates; and a liquid crystal medium contained within a chamber positioned between the first and second substrates which includes a macrocyclic ether and/or a borane; and a nematic, negative dielectric anisotropic liquid crystal mixture.
    Type: Grant
    Filed: July 1, 2009
    Date of Patent: September 30, 2014
    Assignee: Gentex Corporation
    Inventor: Guomin Zhang
  • Patent number: 8821757
    Abstract: The invention relates to a liquid-crystalline medium comprising one or more compounds of the formula (I), in which R0 has the meanings indicated in Claim 1, and to the use thereof in electro-optical liquid-crystal displays.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: September 2, 2014
    Assignee: Merck Patent GmbH
    Inventors: Michael Wittek, Brigitte Schuler, Lars Lietzau
  • Patent number: 8815117
    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: August 26, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventors: Xing Feng, Xinhui Zhong
  • Patent number: 8801966
    Abstract: 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: Grant
    Filed: February 5, 2009
    Date of Patent: August 12, 2014
    Assignee: VVI Bright China Ltd.
    Inventors: Xinhua Chen, R. Amaranatha Reddy
  • Patent number: 8795553
    Abstract: A liquid crystal composition is described, which contains a two-ring compound having a large optical anisotropy and a negatively large dielectric anisotropy as a first component, and a two-ring compound having a negatively large dielectric anisotropy and a small viscosity as a second component, and may further contain at least one of a compound having a small viscosity as a third component, a compound having a negatively large dielectric anisotropy as a fourth component, and a compound having an especially negatively large dielectric anisotropy as a fifth component. An AM liquid crystal display device containing the liquid crystal composition is also described.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: August 5, 2014
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Norikatsu Hattori, Kazuhiko Saigusa
  • Patent number: 8790545
    Abstract: A composition for a liquid crystal film includes: 100 parts by weight of a vertically aligned liquid crystal mixture; 0.001-20 parts by weight of a chiral dopant; and 50-900 parts by weight of a solvent.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: July 29, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Dae-Hee Lee, Belyaev Sergey, Moon-Soo Park
  • Publication number: 20140204329
    Abstract: A liquid crystal display device includes a first substrate, a second substrate facing the first substrate, and a liquid crystal layer between the first and second substrates. The liquid crystal layer includes a liquid crystal composition including an alkenyl liquid crystal and an antioxidant component including at least one selected from an antioxidant and a derivative thereof. In an embodiment, the antioxidant component is present in an amount of greater than 0 ppm and equal to or less than about 10,000 ppm relative to the total weight of the liquid crystal composition.
    Type: Application
    Filed: May 29, 2013
    Publication date: July 24, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Jihong BAE, Kyungmin KIM, Min-Jae KIM, Min-Hee KIM, Euna KIM, Joon-Hyung PARK, KEUNCHAN OH, JINHYEONG LEE
  • Patent number: 8778466
    Abstract: 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: Grant
    Filed: October 11, 2007
    Date of Patent: July 15, 2014
    Assignee: Merck Patent GmbH
    Inventors: Georg Bernatz, Andreas Taugerbeck
  • Patent number: 8778223
    Abstract: Provided are compounds useful for use in liquid crystal mixtures to improve the properties of the mixture. In embodiments, the compound has two cyclohexyl ring and a tail containing one more fluorine atoms.
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: July 15, 2014
    Assignee: LC Vision, LLC
    Inventor: Michael Wand
  • Patent number: 8767166
    Abstract: In the liquid crystal display device where a liquid crystal layer exhibiting a blue phase is interposed between a first substrate and a second substrate, a pixel electrode layer (first electrode layer) and a common electrode layer (second electrode layer) provided between the first substrate and the liquid crystal layer are positioned not to overlap with each other. The pixel electrode layer is formed to cover top and side surfaces of a rib-shaped first structure body which projects into the liquid crystal layer from a surface of the first substrate on the liquid crystal layer side. The common electrode layer is formed to cover top and side surfaces of a rib-shaped second structure body which projects into the liquid crystal layer from the surface of the first substrate on the liquid crystal layer side.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: July 1, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Daisuke Kubota, Tetsuji Ishitani, Akio Yamashita, Tomohiro Tamura