Including Fully Saturated Ring Patents (Class 252/299.63)
  • Patent number: 10982145
    Abstract: The present invention relates to a negative dielectric anisotropic liquid crystal composition, a liquid crystal display element, and a liquid crystal display. The negative dielectric anisotropic liquid crystal composition of the present invention comprises a first component composed of one or more compounds represented by formula I and a second component composed of one or more polymerizable compounds: The negative dielectric anisotropic liquid crystal composition disclosed by the present invention has a low rotary viscosity, a fast response speed and a good stability, and is very suitable for manufacturing liquid crystal display elements, particularly suitable for PS (polymer-stabilized) or PSA (polymer-stabilized alignment)-type liquid crystal displays.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: April 20, 2021
    Assignee: SHIJIAZHUANG CHENGSHI YONGHUA DISPLAY MATERIAL CO., LTD.
    Inventors: Wenxiao Xing, Jiaming Li, Ruixiang Liang, Xuanfei Sun, Yapeng Huang, Hongru Gao
  • Patent number: 10934488
    Abstract: A polymerizable compound-containing liquid crystal composition of the present invention relates to a liquid crystal composition containing a polymerizable compound represented by general formula (I) and a compound represented by general formula (II) and can be used for a liquid crystal display device imparted with liquid crystal aligning ability by polymerization. The polymerizable liquid crystal composition is required to cause no precipitation in a wide temperature range and have a low viscosity corresponding to fast switching, and a liquid crystal display device using the composition is required to have more stable alignment after polymerization and to cause no defect in display characteristics. In the present invention, the problems can be solved using a specified compound.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: March 2, 2021
    Assignee: DIC CORPORATION
    Inventors: Go Sudo, Shotaro Kawakami
  • Patent number: 10907101
    Abstract: A liquid crystal cell includes a pair of facing substrates having a photo-alignment film, and a liquid crystal layer. The liquid crystal material contains a liquid crystal compound having a structure represented by any of the following chemical formula (1-1) and chemical formula (1-2): A1-CnF2n—X1-A2??(1-1) A1-X1—CnF2n+1??(1-2) in the chemical formula (1-1), A1 is a phenyl group, a phenylene group, a naphthyl group, a naphthylene group, a cyclohexyl group, or a cyclohexylene group; A2 is a phenyl group, a phenylene group, a naphthyl group, or a naphthylene group (provided that a hydrogen atom in functional groups A1 and A2 is optionally substituted by a fluoro group, a chloro group, a bromo group, a methyl group, or an ethyl group); X1 is an oxygen atom or a direct bond; and n is an integer of 1 to 6. The photo-alignment film is obtained by subjecting a polymer film to a photo-alignment treatment.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: February 2, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masanobu Mizusaki, Hiroshi Tsuchiya
  • Patent number: 10883049
    Abstract: A liquid crystal display (LCD) panel includes a first substrate, a second substrate, and a liquid crystal layer disposed between the first substrate and the second substrate. The liquid crystal layer includes liquid crystals with negative dielectric anisotropy and a hindered amine light stabilizer (HALS).
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: January 5, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sung Hwan Hong, Mi Suk Kim, Tae Ho Kim, Keun Chan Oh, Chang Hun Lee
  • Patent number: 10858587
    Abstract: Liquid-crystalline media containing one or more compounds of formulae I-1, I-2 and/or I-3 and one or more compounds of formulae II and/or III and components containing these media for high-frequency technology, in particular phase shifters and microwave array antennas.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: December 8, 2020
    Assignee: MERCK PATENT GMBH
    Inventors: Michael Wittek, Dagmar Klass
  • Patent number: 10767113
    Abstract: Provided is a liquid crystal compound containing 2,3,4-trisubstituted benzene, a liquid crystal composition thereof, and a liquid crystal display element or a liquid crystal display comprising the liquid crystal compound or the liquid crystal composition, wherein the liquid crystal composition has a lower viscosity, can achieve a quick response, and further has a moderate dielectric anisotropy ??, a moderate optical anisotropy ?n, and high stability to heat and light. The liquid crystal display element or liquid crystal display comprising the liquid crystal composition has the properties of a wider nematic phase temperature range, an appropriate birefringence anisotropy, a very high electrical resistivity, a good ultraviolet resistant property, a high charge retention rate, a low vapor pressure etc., and particularly, the liquid crystal compound or the liquid crystal composition has the advantage of a high light transmittance.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: September 8, 2020
    Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.
    Inventors: Guoliang Yun, Hongmei Cui, Mingxia Wang, Sumin Kang, Yongtao Zhang, Yong Chen
  • Patent number: 10745618
    Abstract: A liquid crystal composition that satisfies at least one of characteristics such as a high maximum temperature, a low minimum temperature, a small viscosity, a suitable optical anisotropy and a large negative dielectric anisotropy, or that has a suitable balance between at least two of these characteristics, and an AM device including this composition. The nematic liquid crystal composition includes 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 include a specific compound having a negative dielectric anisotropy as a third component, and a specific compound having a high maximum temperature or a small viscosity as a fourth component, or a specific compound having a polymerizable group as an additive.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: August 18, 2020
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventor: Masayuki Saito
  • Patent number: 10711197
    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: January 26, 2017
    Date of Patent: July 14, 2020
    Assignee: MERCK PATENT GMBH
    Inventors: Michael Wittek, Dagmar Klass, Atsutaka Manabe, Christian Jasper, Volker Reiffenrath, Constanze Brocke, Detlef Pauluth
  • Patent number: 10647918
    Abstract: A liquid crystal composition includes: at least one liquid crystal compound selected from the group consisting of Chemical Formulas 1-1 to 1-8; at least one self-aligned compound selected from the group consisting of Chemical Formulas 2-1 and 2-2; and at least one reactive mesogen selected from the group consisting of Chemical Formulas 3-1 to 3-5. Compositions and devices constructed therewith are capable of ameliorating liquid crystal drip spots that typically occur in a manufacturing process. In addition, the display devices using the composition do not require an additional alignment layer, which simplifies manufacturing.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: May 12, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji Eun Jang, Sun Young Kwon, Min-Hee Kim, Jong Ho Son, Keun Chan Oh, Chang-Hun Lee
  • Patent number: 10563126
    Abstract: A liquid crystal compound is represented by formula (1): In formula (1), R1 is alkyl or the like; ring A1 and ring A2 are independently 1,4-cyclohexylene, 1,4-phenylene or the like; Z1, Z2 and Z3 are independently a single bond, —CF2O— or the like; X1 is fluorine, chlorine, —CF3 or the like; L1 and L2 are independently hydrogen, fluorine or the like; a and b are independently 0, 1, 2 or 3; and W is a group represented by formula (1a) or formula (1b); In formula (1a) and formula (1b), L3 to L8 are independently hydrogen, fluorine or the like.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: February 18, 2020
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventor: Tomohiro Yano
  • Patent number: 10465113
    Abstract: The present invention is a liquid crystal composition having negative dielectric anisotropy containing one or two or more of compounds represented by General Formula (i), and is also a liquid crystal display element using the liquid crystal composition. The problem to be solved by the present invention is to provide a liquid crystal composition with a large refractive index anisotropy (?n), a low rotational viscosity (?1), a large elastic constant (K33), a high voltage holding ratio (VHR), and which has a negative dielectric anisotropy (??), and a liquid crystal display element which, when using the liquid crystal composition, has a high response speed with excellent display quality in which display defects such as drop marks, burn-in, and display unevenness are absent or suppressed.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: November 5, 2019
    Assignee: DIC CORPORATION
    Inventors: Go Sudo, Shinichi Hirata
  • Patent number: 10459292
    Abstract: A liquid crystal display includes a first substrate, a second substrate opposing the first substrate, an electrode portion provided on at least one of the first and second substrates, and a liquid crystal layer provided between the first substrate and the second substrate and including a liquid crystal composition. The liquid crystal composition includes a liquid crystal compound including a cyclohexenylene group, and provides the liquid crystal display with low rotary viscosity and high voltage holding ratio.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: October 29, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Joon Hyung Park, Kyung Hae Park, Jong Ho Son, Jin Hyeong Lee, Hye Lim Jang
  • Patent number: 10435628
    Abstract: The invention relates to a polymerizable LC medium with negative optical dispersion, a polymer film with negative optical dispersion obtainable from such a medium, and the use of the polymerizable LC medium and polymer film in optical, electro optical, electronic, semiconducting or luminescent components or devices.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: October 8, 2019
    Assignee: MERCK PATENT GMBH
    Inventors: Joseph Sargent, Owain Llyr Parri, Kevin Adlem, Hassan Arasi
  • Patent number: 10407618
    Abstract: Shown are a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature, low minimum temperature, small viscosity, suitable optical anisotropy and large negative dielectric anisotropy, or the liquid crystal composition having a suitable balance regarding at least two of the characteristics; and an AM device including the composition. The liquid crystal composition contains a specific compound having small optical anisotropy as a first component, and a specific compound having large negative dielectric anisotropy as a second component, and may contain a specific compound having high maximum temperature or small viscosity as a third component, or a specific compound having a polymerizable group as an additive.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: September 10, 2019
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventor: Masayuki Saito
  • Patent number: 10403658
    Abstract: An image sensing device includes pixels forming rows and columns, sets of control lines respectively assigned to the rows such that one set of control lines is connected to one of the rows, a row drive circuit configured to drive the sets of control lines, and an assist circuit. Each set includes a first control line and a second control line. The row drive circuit includes a first drive circuit connected to a first end of the first control line and a second drive circuit connected to first end of the second control line. The assist circuit includes an assist drive circuit connected to a second end of the first control line so as to drive the first control line in accordance with a control signal supplied to the second control line.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: September 3, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshiaki Takada, Kazuo Yamazaki
  • Patent number: 10392561
    Abstract: The invention relates to bimesogenic compounds of formula I wherein R11, R12, MG11, MG12, X11, X12 and Sp1 have the meaning given in claim 1, to the use of bimesogenic compounds of formula I in liquid crystal media and particular to flexoelectric liquid crystal devices comprising a liquid crystal medium according to the present invention.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: August 27, 2019
    Assignee: Merck Patent GmbH
    Inventors: Detlef Pauluth, Kevin Adlem, Owain Llyr Parri, Rachel Tuffin, Hassan Arasi, Patricia Eileen Saxton
  • Patent number: 10392339
    Abstract: Provided is a polar compound having high chemical stability, high capability of aligning liquid crystal molecules, high solubility in a liquid crystal composition, and a large voltage holding ratio when used in a liquid crystal display device. The compound is represented by formula (1): in which, for example, R1 is alkyl having 1 to 15 carbons; MES is a mesogen group having at least one ring; Sp1 is a single bond or alkylene having 1 to 10 carbons; M1 and M2 are hydrogen; and R2 is a group represented by formulas (1a) to (1c): in which, Sp2 and Sp3 are a single bond or alkylene having 1 to 10 carbons; S1 is >CH—; S2 is >C<; and X1 is —OH.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: August 27, 2019
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Hiroyuki Tanaka, Masakazu Yano, Fumitaka Kondou, Kazuhiro Ogita
  • Patent number: 10385271
    Abstract: To provide a liquid crystal composition having at least one or a suitable balance regarding two of characteristics such as high maximum or low minimum temperature of a nematic phase, small viscosity, suitable optical anisotropy, large dielectric anisotropy, large specific resistance, high stability to ultraviolet light or heat and a large elastic constant; and an AM device including the composition and having a short response time, a large voltage holding ratio, low threshold voltage, a large contrast ratio, a long service life and so forth. The liquid crystal composition contains a quencher as an additive component and a specific compound having large positive dielectric anisotropy as a first component, and a liquid crystal display device includes the composition. The composition may contain a specific compound having high maximum temperature or small viscosity as a second component, or a specific compound having negative dielectric anisotropy as a third component.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: August 20, 2019
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Yoshimasa Furusato, Masayuki Saito
  • Patent number: 10351771
    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: Grant
    Filed: August 13, 2014
    Date of Patent: July 16, 2019
    Assignee: Merck Patent GmbH
    Inventors: Mark Goebel, Lars Lietzau, Sabine Schoen, Andreas Pohle
  • Patent number: 10351774
    Abstract: Provided are a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature, low minimum temperature, small viscosity, suitable optical anisotropy and large dielectric anisotropy, or the liquid crystal composition having a suitable balance regarding at least two of the characteristics; and an AM device including the composition. The liquid crystal composition contains a specific compound having small optical anisotropy as a first component, and a specific compound having positive dielectric anisotropy as a second component, and may contain a specific compound having high maximum temperature or small viscosity as a third component, a specific compound having positive dielectric anisotropy as a fourth component, or a specific compound having negative dielectric anisotropy as a fifth component.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: July 16, 2019
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventor: Masayuki Saito
  • Patent number: 10351772
    Abstract: The present invention relates to a nematic liquid crystal composition containing a polymerizable compound and having a negative dielectric anisotropy (??) and PSA or PSVA liquid crystal display element produced by using the same. The liquid crystal composition according to the present invention can provide PSA or PSVA liquid crystal display element, in which a sufficient pretilt angle is included, the amount of remaining monomer is small, there are no or almost no problems, e.g., alignment defects and display defects, arisen from a low voltage holding rate (VHR) and the like, and excellent response performance is exhibited. A liquid crystal display element using the liquid crystal composition according to the present invention is useful for an active-matrix-drive liquid crystal display element and can be applied to PSA, PSVA, and other liquid crystal display elements.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: July 16, 2019
    Assignee: DIC CORPORATION
    Inventors: Go Sudo, Marina Goto
  • Patent number: 10316252
    Abstract: The present invention provides a polymerizable compound represented by Formula (I), which can be used as a low birefringence liquid crystal; in the formula, R1 and R2 represent —C(?O)—X-Sp3-Q3 or the like, n1 and n2 represent 0 to 4, X represents —O— or the like, Z1 represents an arylene group or the like, Z2 represents an arylene group, or the like, m1 represents 1 or 2, m2 represents 0 to 2, L1 and L2 represent —C(?O)O—, —OC(?O)—, or the like, Sp1, Sp2, and Sp3 represent an alkylene group, a group in which one or two or more —CH2—'s in the alkylene group are substituted with —O—, or the like, Q1 and Q2 represent a polymerizable group, and Q3 represents a hydrogen atom or a polymerizable group; a polymer obtained by polymerizing the polymerizable compound; a polymerizable composition containing the polymerizable compound; and a film formed of the polymerizable composition.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: June 11, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Shunya Katoh, Daisuke Hayashi
  • Patent number: 10294424
    Abstract: To show a liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature thereof, small viscosity, suitable optical anisotropy, large positive dielectric anisotropy or having a suitable balance regarding at least two of the characteristics, and an AM device including the liquid crystal composition. The liquid crystal composition contains a specific compound having high maximum temperature and low minimum temperature as a first component, and the liquid crystal composition may contain a specific compound having large positive dielectric anisotropy as a second component, a specific compound having high maximum temperature or small viscosity as a third component, a specific compound having large positive dielectric anisotropy as a fourth component, or a specific compound having negative dielectric anisotropy as a fifth component.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: May 21, 2019
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Yoshimasa Furusato, Masayuki Saito
  • Patent number: 10273410
    Abstract: Shown is a liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature, a low minimum temperature, a small viscosity, a suitable optical anisotropy and a large dielectric anisotropy, or has a suitable balance regarding at least two of the characteristics, and an AM device including the composition. The liquid crystal composition contains a specific compound having large negative dielectric anisotropy as a first component, and a specific compound having small viscosity as a second component, and may contain a specific compound having negative dielectric anisotropy as a third component, a specific compound having a high maximum temperature or small viscosity as a fourth component or a specific compound having a polymerizable group as an additive component.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: April 30, 2019
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventor: Masayuki Saito
  • Patent number: 10190048
    Abstract: The invention relates to a liquid-crystalline medium, preferably having a nematic phase and negative dielectric anisotropy, which comprises a) one or more compounds of formula I and b) one or more compounds selected from the group of compounds of the formulae II and III in which the parameters have the respective meanings indicated in claim 1, to the use thereof in an electro-optical display, particularly in an active-matrix display based on the VA, ECB, PALC, IPS or FFS effect, to displays of this type which contain a liquid-crystalline medium of this type, and to the use of the compounds of formula I for reduction of the dispersion of the birefringence of a liquid-crystalline medium which comprises one or more compounds of the formulae II and/or III.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: January 29, 2019
    Assignee: Merck Patent GmbH
    Inventors: Atsutaka Manabe, Sven Baran, Lars Lietzau, Brigitte Schuler
  • Patent number: 10160909
    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: November 8, 2016
    Date of Patent: December 25, 2018
    Assignee: Merck Patent GmbH
    Inventors: Melanie Klasen-Memmer, Sabine Schoen
  • Patent number: 10144870
    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: November 8, 2016
    Date of Patent: December 4, 2018
    Assignee: Merck Patent GmbH
    Inventors: Melanie Klasen-Memmer, Sabine Schoen
  • Patent number: 10131841
    Abstract: The invention relates to the compounds of the formula I and to a liquid-crystalline medium based on a mixture of polar compounds which contains at least one compound of the formula I in which R1, ring A1, L1, L2, L3, L4, L5, L6, L7, L8, Z1 and m have the meanings indicated in claim 1 and to the use of the LC mixtures in electro-optical displays, especially for the self-aligning VA mode.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: November 20, 2018
    Assignee: Merck Patent GmbH
    Inventors: Graziano Archetti, Izumi Saito, Rocco Fortte, Timo Uebel
  • Patent number: 10113115
    Abstract: There is provided a liquid crystal composition having the following properties without suffering reductions in refractive index anisotropy (?n) and nematic phase-isotropic liquid phase transition temperature (Tm): sufficiently low viscosity (?), sufficiently low rotational viscosity (?1), a large elastic constant (K33), and a negative dielectric anisotropy (??) with a large absolute value. There is also provided a liquid crystal display device of, for example, a VA type that uses such a liquid crystal composition and that has a high response speed and excellent display quality with defective display being eliminated or reduced. In particular, a liquid crystal composition having a negative dielectric anisotropy is provided, the composition containing a first component that is at least one compound represented by General Formula (i) and a second component that is at least one compound selected from compounds represented by General Formula (L).
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: October 30, 2018
    Assignee: DIC CORPORATION (TOKYO)
    Inventors: Kazunori Maruyama, Shinichi Hirata
  • Patent number: 10106740
    Abstract: There is provided a liquid crystal composition having a dielectric anisotropy (??) large in absolute value, a sufficiently low viscosity (?), a sufficiently low rotational viscosity (?1), and a high elastic constant (K33) without decreased refractive index anisotropy (?n) or nematic phase-isotropic liquid phase transition temperature (Tni). A liquid crystal display device, such as a VA mode liquid crystal display device, including the liquid crystal composition has high response speed and good display quality with few or no display defects. The liquid crystal display device including the liquid crystal composition is useful as an active-matrix liquid crystal display device and is applicable as a liquid crystal display device such as a VA mode or PSVA mode liquid crystal display device.
    Type: Grant
    Filed: November 29, 2013
    Date of Patent: October 23, 2018
    Assignee: DIC CORPORATION
    Inventors: Go Sudo, Shotaro Kawakami
  • Patent number: 10087370
    Abstract: The invention relates to mesogenic media comprising a first component, component A, consisting of bimesogenic compounds selected from the group of compounds of formulae A-I to A-III a second component, component B, consisting of nematogenic compounds, preferably selected from the group of compounds of formulae B-I to B-III and a third component, component C, consisting of one or more chiral molecules, wherein the parameters have the meaning given in claim 1, to the use of mesogenic media in flexoelectric liquid crystal devices and to those devices comprising a liquid crystal medium according to the present invention.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: October 2, 2018
    Assignee: MERCK PATENT GMBH
    Inventors: Rachel Tuffin, Benjamin Snow, Owain Llyr Parri, Simon Siemianowski, Rebecca Proctor, Kevin Adlem
  • Patent number: 10047293
    Abstract: To provide a liquid crystal compound satisfying at least one of high stability to heat, light and so forth, a high clearing point, low minimum temperature of a liquid-crystal phase, small viscosity, suitable optical anisotropy, large dielectric anisotropy, a suitable elastic constant and excellent compatibility with other liquid-crystal compounds, a liquid crystal composition containing the compound and a liquid crystal display device including the composition. A compound is represented by formula (1-1). For example, R1 and R2 are independently hydrogen, alkyl having 1 to 10 carbons, alkenyl having 3 to 10 carbons and alkoxy having 1 to 9 carbons; ring A1 is 1,4-cyclohexylene; ring A2 and ring A3 are independently 1,4-cyclohexylene or 1,4-phenylene; Z1 is a single bond or —(CH2)2; l is 0 or 1, m and n are 0, 1 or 2, a sum: l+m+n is 0, 1 or 2; x is 0 or 1.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: August 14, 2018
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventor: Masahide Kobayashi
  • Patent number: 10030198
    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: Grant
    Filed: October 21, 2014
    Date of Patent: July 24, 2018
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Eriko Kurihara, Masayuki Saito, Yoshimasa Furusato
  • Patent number: 9976082
    Abstract: The present invention provides a liquid crystal composition having easily adjustable rotational viscosity while maintaining stability at low temperature, a clearing point and dielectric anisotropy (positive value) in an optimal condition according to an exemplary embodiment of the present invention, including: at least one liquid crystal compound selected from the group consisting of liquid crystal compounds represented by the following Chemical Formula 1, as a first component; at least one liquid crystal compound selected from the group consisting of liquid crystal compounds represented by the following Chemical Formula 2, as a second component; and at least one liquid crystal compound selected from the group consisting of liquid crystal compounds represented by the following Chemical Formula 3, as a third component.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: May 22, 2018
    Assignee: Dongjin Semichem Co., Ltd.
    Inventors: Bo Ra Hong, Sun-Hee Lee, Mi Kyoung Lee, Bong Hee Kim, Young Kuk Kim
  • Patent number: 9951276
    Abstract: The present invention discloses a liquid crystal composition and a display device containing the same. The liquid crystal composition comprises one or more compounds of general Formula I; one or more compounds of general Formula II; and one or more compounds of general Formula III. The liquid crystal composition provided in the present invention has the properties of large optical and dielectric anisotropies, high clearing point, fast response speed, high resistivity, and good high-temperature and UV stability, and is applicable to a liquid crystal display (LCD), and particularly an LCD display requiring fast response speed, such that a good display effect of images without ghosting can be achieved when the LCD display works in a harsh environment.
    Type: Grant
    Filed: October 12, 2015
    Date of Patent: April 24, 2018
    Assignee: JIANGSU HECHENG DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Panpan Wang, Wenming Han, Wenyang Ma, Wenqi Zhang
  • Patent number: 9938463
    Abstract: There is provided a liquid crystal display device that uses such a liquid crystal composition is also provided. Provided is a liquid crystal composition that includes a first component which is at least one selected from the group consisting of compounds represented by general formula (1) and a second component which is at least one component selected from the group consisting of compounds represented by general formula (2). Also provided is a liquid crystal display device that uses a liquid crystal composition that contains the first component and the second component.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: April 10, 2018
    Assignee: DIC CORPORATION
    Inventors: Shinji Ogawa, Yoshinori Iwashita, Joji Kawamura, Makoto Negishi
  • Patent number: 9926490
    Abstract: The present invention relates to a liquid crystal (LC) medium comprising a polymerizable compound, one or more compounds of formula Q, and one or more compounds of formula AN1 to a process for its preparation, to its use for optical, electro-optical and electronic purposes, in particular in LC displays, especially in an LC display of the polymer sustained alignment (PSA) type, and to an LC display, especially a PSA display, comprising it.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: March 27, 2018
    Assignee: MERCK PATENT GMBH
    Inventors: Dong-Mee Song, Eun-Kyu Lee, Seung-Eun Lee
  • Patent number: 9835890
    Abstract: The present invention relates to a liquid crystal (LC) display of the FFS type comprising a liquid crystal medium with negative dielectric anisotropy and a di- or multireactive polymerizable compound, and an alignment layer inducing planar alignment in the LC medium.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: December 5, 2017
    Assignee: MERCK PATENG GMBH
    Inventors: Martin Engel, Helmut Haensel, Nico John
  • Patent number: 9822307
    Abstract: The instant invention relates to liquid crystalline media comprising a chiral component, component A, consisting of one or more chiral compounds, optionally, a bimesogenic component, component B, consisting of one or more bimesogenic compounds, a liquid crystalline component, component C, consisting of one or more liquid crystalline, respectively mesogenic compounds, and a reactive mesogenic component, component D, comprising, one or more reactive mesogenic compounds, as defined in claim 1, to their stabilization by polymerization and to the polymer-stabilised liquid crystal materials, as well as to liquid crystal displays comprising these liquid crystal media, respectively these stabilized materials, especially to USH-displays and in particular to active matrix displays and, last not least, to the processes of preparation of the respective composite systems and of the displays comprising these systems.
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: November 21, 2017
    Assignee: MERCK PATENT GMBH
    Inventors: Seung-Eun Lee, Sang-Kyu Lee, Heui-Seok Jin, Won-Hoon Park, Karl Skjonnemand, David Wilkes, Kevin Adlem, Patricia Saxton, Owain Llyr Parri
  • Patent number: 9803140
    Abstract: The present disclosure discloses a liquid crystal compound and a liquid crystal composition. The liquid crystal compound has a general structural formula as represented by formula I. The liquid crystal composition provided by the present disclosure has a lower rotary viscosity ?1, can achieve a quick response, and further has an appropriate dielectric anisotropy ??, an appropriate optical anisotropy ?n, a high stability to heat and light, a high VHR numerical value especially in the case where the liquid crystal is under harsh conditions, and a stability to electric field and electromagnetic radiation. As a liquid crystal material for use in thin film transistor techniques (TFT-LCD), the material further has the properties of a wider nematic phase temperature range, an appropriate birefringence anisotropy, a very high electrical resistivity, a good anti-ultraviolet performance, a high charge holding rate, a low vapor pressure etc.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: October 31, 2017
    Assignee: Shijiazhuang Chengzhi Yonghua Display Materials Co., Ltd.
    Inventors: Guoliang Yuan, Lei Zhao, Kui Wang, Mingxia Wang, Ruimao Hua, Jinsong Meng
  • Patent number: 9783736
    Abstract: A solution is a compound represented by formula (1), a liquid crystal composition containing the compound and a liquid crystal display device including the composition. In formula (1), Ra and Rb are independently alkyl having 1 to 30 carbons or the like; and X and Y are independently fluoroalkyl having 1 to 5 carbons, fluoroalkoxy having 1 to 5 carbons or pentafluorosulfanil, and one of X and Y may be fluorine.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: October 10, 2017
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventor: Yasuyuki Sasada
  • Patent number: 9752075
    Abstract: Mesogenic media comprising a first component, component A, consisting of bimesogenic compounds optionally a second component, component B, consisting of nematogenic compounds, and optionally a second or third component, component C, consisting of one or more chiral molecules, is suitable for use in flexoelectric liquid crystal devices.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: September 5, 2017
    Assignee: MERCK PATENT GMBH
    Inventors: Rachel Tuffin, Rebecca Proctor, Simon Siemianowski, Benjamin Snow, Owain Llyr Parri, Kevin Adlem
  • Patent number: 9714382
    Abstract: A liquid crystal composition having at least one or a suitable balance regarding at least two of characteristics such as high maximum temperature of a nematic phase, low minimum temperature thereof, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light or heat and a large elastic constant; an AM device having characteristics such as short response time, a large voltage holding ratio, low threshold voltage, a large contrast ratio and long service life are described.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: July 25, 2017
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Eriko Kurihara, Masayuki Saito, Yoshimasa Furusato
  • Patent number: 9696581
    Abstract: According to one embodiment, a liquid crystal display device includes a polarizing layer, first and second substrate units, and a liquid crystal layer. The first substrate unit has first and second surfaces. The first surface is on the polarizing layer side. The second surface is on a side opposite to the first surface. The first substrate unit includes first and second pixel electrodes, and an opening region. The first and second pixel electrodes are disposed on the first surface. The second substrate unit is provided between the first substrate unit and the polarizing layer. The second substrate unit has third and fourth surfaces. The third surface is on the first substrate unit side. The fourth surface is on a side opposite to the third surface. The second substrate unit includes an opposing electrode on the third surface. The liquid crystal layer is provided between the first and third surfaces.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: July 4, 2017
    Assignee: Japan Display Inc.
    Inventor: Masaya Tamaki
  • Patent number: 9644144
    Abstract: The invention relates to bimesogenic compounds of formula I wherein R11, R12, MG11, MG12, X11, X12 and Sp1 have the meaning given in claim 1, to the use of bimesogenic compounds of formula I in liquid crystal media and particular to flexoelectric liquid crystal devices comprising a liquid crystal medium according to the present invention.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: May 9, 2017
    Assignee: MERCK PATENT GMBH
    Inventors: Kevin Adlem, Owain Llyr Parri, Rachel Tuffin, Patricia Eileen Saxton, Mariam Namutebi, Benjamin Snow
  • Patent number: 9580652
    Abstract: A liquid crystal compound represented by Formula 1:
    Type: Grant
    Filed: March 2, 2015
    Date of Patent: February 28, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Fusayuki Takeshita, Jaejin Lyu
  • Patent number: 9550942
    Abstract: The present invention relates to nematic liquid-crystal media of negative dielectric anisotropy which have a peak time (tmax.) of 0.25 ms or less, which is determined as described in the disclosure, and which preferably have a value of the quotient of the peak time and the square of the birefringence (tmax/?n2) of 22 ms or less, and to the use of these liquid-crystal media in liquid-crystal displays, and to these liquid-crystal displays.
    Type: Grant
    Filed: June 13, 2005
    Date of Patent: January 24, 2017
    Assignee: Merck Patent GmbH
    Inventors: Melanie Klasen-Memmer, Izumi Saito, Herbert Plach, Kazuaki Tarumi
  • Patent number: 9523037
    Abstract: 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 millimeter wave region, for microwave and millimeter wave array antennae and very particularly for so-called tuneable “reflectarrays”.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: December 20, 2016
    Assignee: Merck Patent GmbH
    Inventors: Atsutaka Manabe, Christian Jasper, Volker Reiffenrath, Elvira Montenegro, Detlef Pauluth, Dagmar Klass
  • Patent number: 9518221
    Abstract: The inventor of the present invention has investigated various liquid crystal compounds and various chemical substances and found that the object can be achieved by using a combination of particular liquid crystal compounds, thereby making the present invention. In other words, provided are a liquid crystal composition having positive dielectric anisotropy, comprising compounds represented by formula (26.2) and formula (2.5) and one or more compounds represented by general formula (IV), an active matrix driving-liquid crystal display device using the liquid crystal composition, and a liquid crystal display using the active matrix-driving liquid crystal display device: (In the formula, R41 and R42 each independently represent an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 4 or 5 carbon atoms and X41 and X42 each independently represent a hydrogen atom or a fluorine atom.
    Type: Grant
    Filed: July 22, 2013
    Date of Patent: December 13, 2016
    Assignee: DIC CORPORATION
    Inventor: Joji Kawamura
  • Patent number: 9487702
    Abstract: The present invention relates to a liquid crystal (LC) medium comprising a polymerizable compound, to a process for its preparation, to its use for optical, electro-optical and electronic purposes, in particular in an LC display, especially in an LC display of the PSA (“polymer sustained alignment”) type, and to an LC display comprising the LC medium.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: November 8, 2016
    Assignee: MERCK PATENT GMBH
    Inventors: Eveline Baron, Julian Vogt, Qiong Tong, Stephan Derow