Including Heterocyclic Ring Patents (Class 252/299.61)
  • Patent number: 11180698
    Abstract: The present invention relates to liquid-crystalline media comprising one or more pleochroic compounds, and one or more compounds selected from the group of compounds of formulae I, II and III, in which the groups have the meanings as set forth in claim 1, and to components comprising these media for high-frequency technology, in particular phase shifters and microwave array antennas.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: November 23, 2021
    Assignee: Merck Patent GmbH
    Inventors: Michael Wittek, Dagmar Klass, Peer Kirsch
  • Patent number: 11168255
    Abstract: A liquid-crystalline medium, preferably having a nematic phase and dielectric anisotropy of 0.5 or more, which comprises one or more compounds of formula T in which denotes and the use thereof in an electro-optical display, particularly in an active-matrix display based on the IPS or FFS effect, to displays of this type which contain a liquid-crystalline medium of this type, and to the compounds of formula T and their use for the improvement of the transmission and/or response times of a liquid-crystalline medium which contains one or more additional mesogenic compounds.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: November 9, 2021
    Assignee: Merck Patent GmbH
    Inventors: Atsutaka Manabe, Constanze Brocke, Sven Baran, Sebastian Hofmeyer, Alexander Hahn
  • Patent number: 11153997
    Abstract: A display apparatus including a heat sink plane disposed on a bottom surface of a display panel and configured in such a way that a coupling groove with a circuit board accommodated therein is formed in the guide panel, which is coupled to the bottom surface of a heat sink plane, to attach and detach the circuit board into and from the coupling groove through a guide holder disposed on a guide panel.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: October 19, 2021
    Assignee: LG Display Co., Ltd.
    Inventor: Hyo-Jin Bang
  • Patent number: 11098250
    Abstract: Disclosed are a liquid crystal composition, a liquid crystal display element, and a liquid crystal display, said liquid crystal composition comprising one or more compounds represented by formula I, one or more compounds represented by formula II, one or more compounds represented by formula III and one or more compounds represented by formula IV, The liquid crystal composition of the present invention has a good stability to light and heat and a lower viscosity, and can attain a wider refractive index and a high clearing point (a wide service temperature range), and in particular, the liquid crystal composition has a high light transmittance, thus allowing a display device to have a high brightness or an energy saving effect.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: August 24, 2021
    Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.
    Inventors: Yameng Zai, Kai Xu, Guanchao Zhang, Ke-Lun Shu, Guoliang Yun, Gang Wen, Xiaoming Xiong, Wei Wang
  • Patent number: 11099445
    Abstract: A display panel and a display apparatus are provided. The display panel includes a first substrate and a second substrate which are arranged oppositely. A liquid crystal layer is filled between the first substrate and the second substrate, the liquid crystal layer has dielectric anisotropy of parameter in a range from ?1 F/m to 1 F/m, a sum of a bending flexural coefficient and a splaying flexoelectric coefficient of the liquid crystal layer is greater than 1 pc/m, and liquid crystal molecules in the liquid crystal layer are deflected by a flexoelectric effect, so that deflecting speed of the liquid crystal molecules in the liquid crystal layer is improved and the response time of the liquid crystal layer is shortened.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: August 24, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., KENT STATE UNIVERSITY
    Inventors: Guangkui Qin, Dengke Yang, Xiaochen Zhou
  • Patent number: 11066602
    Abstract: Provided are a reactive mesogen that may improve display quality of a liquid crystal display, and a liquid crystal composition including the same. The reactive mesogen is represented by the following Formula: BZ1b1XZ2b2Pa where X, Z1, Z2, B, and Pa are specified in the disclosure, and each of b1 and b2 is independently an integer between 0 to 6, inclusive.
    Type: Grant
    Filed: May 22, 2019
    Date of Patent: July 20, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventor: Ho Lim
  • Patent number: 11053441
    Abstract: A liquid crystal composition and the use thereof are provided. The liquid crystal composition comprises 15-30% by weight of three or more compounds of general formula I; the general formula I must comprises at least two compounds of general formula I-1; wherein, by weight of the total amount of the liquid crystal composition, the total amount of the compounds of general formula I-1 is no lower than 10%, and the content of each of the compounds of general formula I-1 is no higher than 8%. The liquid crystal composition has appropriately high optical anisotropy, higher dielectric anisotropy, lower threshold voltage, suitable elastic constant, suitable temperature range of nematic phase, good reliability and heat stability, and good low-temperature intersolubility.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: July 6, 2021
    Assignee: Jiangsu Hecheng Display Technology Co., Ltd.
    Inventors: Haibin Xu, Wenming Han
  • Patent number: 11046889
    Abstract: The polymerizable liquid crystal compound has reverse wavelength dispersion or low wavelength dispersion and has high solubility in various solvents. The polymerizable liquid crystal compound provides an optically anisotropic body having high adhesiveness to substrates (or alignment films), by adding the polymerizable liquid crystal compound to a polymerizable composition and polymerizing the polymerizable composition using ultraviolet light. The invention provides a polymerizable composition containing the polymerizable liquid crystal compound having reverse wavelength dispersion or low wavelength dispersion, a polymer obtained by polymerizing the polymerizable composition, and an optically anisotropic body using the polymer.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: June 29, 2021
    Assignee: DIC CORPORATION
    Inventors: Yoshitaka Saito, Tatsufumi Yamazaki, Masahiro Horiguchi, Junichi Mamiya, Toru Tsuruta
  • Patent number: 11048109
    Abstract: A display module, display device, and method for controlling same which can suppress power consumption of an electronic device while providing a user with various types of information by various display methods. The display device is configured with two processors with different processing capacities and, with the processors cooperating mutually, image data is written in a driver circuit of a display section via separate interfaces in accordance with an operation mode. A driver circuit writes pixel data based on the image data in each pixel of a display panel which is a memory characteristic liquid crystal panel for retention, thereby controlling the display form of an image in the display panel.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: June 29, 2021
    Assignee: CASIO COMPUTER CO., LTD.
    Inventor: Kimiyasu Mizuno
  • Patent number: 11021654
    Abstract: Disclosed is a liquid crystal composition comprising one or more compounds represented by formula I, one or more compounds represented by formula II, and one or more compounds represented by formula III: The liquid crystal composition has simultaneously a lower rotary viscosity, a better photoelectric performance, a higher clearing point, a good low temperature performance, and less display defects. Further disclosed is a liquid crystal display element or device comprising the liquid crystal composition.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: June 1, 2021
    Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.
    Inventors: Zhian Liang, Guoliang Yun, Yujing Di, Zhe Shao, Sumin Kang, Dongmei Wang
  • Patent number: 11015122
    Abstract: The present invention provides a liquid crystal composition formed by combining a polymerizable compound represented by formula I with a specific liquid crystal component, particularly a PSVA liquid crystal composition for displays or TV applications and a PSA-IPS liquid crystal composition for an IPS mode, and a liquid crystal display element or liquid crystal display comprising this liquid crystal composition; in particular, the polymerizable compound has a faster polymerization rate, and a “material system” formed from the selected polymerizable component and liquid crystal component should have the lowest rotary viscosity and the best photoelectric properties, and has a high VHR after (UV) photoradiation, this avoiding the problem of the occurrence of residual images to final displays.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: May 25, 2021
    Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.
    Inventors: Kui Wang, Mingxia Wang, Zhian Liang, Guoliang Yun, Ke-Lun Shu, Guofang Wang, Huifang Wang
  • Patent number: 11015120
    Abstract: A low birefringence ferroelectric liquid crystal (FLC) mixture composed of at least two components shows birefringence in the range 0.05 to 0.14, which is suitable for the modern display and photonic devices. The cell gap can be tuned from 1.5 ?m to 4 ?m to reduces the fabrication complexity and chromatic distortion by electro-optical modulation. The FLC mixtures can be employed in a wide temperature range. The characteristics of the said FLC mixture can be tuned by tuning the concentration of the constituents of the mixture. The helical pitch of the FLC mixtures can be varied from 100 nm to 10 ?m. A smectic tilt angle can be varied between 17° to 45° and the spontaneous polarization can be tuned over a wide range to meet requirements of different electro-optical modes, and the FLC mixture is applicable for a wide variety of electro-optical effects.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: May 25, 2021
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Valerii Vladimirovich Vashchenko, Evgenii Pavlovich Pozhidaev, Abhishek Kumar Srivastava, Vladimir Grigorievich Chigrinov, Hoi Sing Kwok
  • Patent number: 11008514
    Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds having positive dielectric anisotropy, characterised in that it comprises one or more compounds of the formula I in a total concentration of ?40%, in which the parameters have the meanings indicated in claim 1, and to the use of the liquid-crystalline medium for electro-optical purposes, in particular in liquid-crystal light valves for lighting devices for motor vehicles, and to liquid-crystal light valves which comprise this medium and lighting devices for motor vehicles which contain such liquid-crystal light valves.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: May 18, 2021
    Assignee: MERCK PATENT GMBH
    Inventors: Michael Wittek, Dagmar Klass
  • Patent number: 10988691
    Abstract: The present invention relates to dielectrically positive liquid-crystalline media comprising one or more compounds of the formula I and II in which the parameters have the respective meanings indicated in claim 1, and to liquid-crystal displays, especially active-matrix displays and in particular displays of the vertically aligned mode, containing these media.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: April 27, 2021
    Assignee: Merck Patent GmbH
    Inventors: Takanori Takeda, Masahiko Okamura, Norihiko Tanaka, Yasushi Sugiyama
  • Patent number: 10975305
    Abstract: To provide a compound having an effect of preventing photodegradation of a liquid crystal composition and high solubility in a liquid crystal composition, a liquid crystal composition containing the compound, and a liquid crystal display element containing the composition. There are provided a compound represented by M(Z-Q)m, a liquid crystal composition containing the compound, and a liquid crystal display element using the composition. Here, m is 3, 4, or 5; M is a trivalent, tetravalent, or pentavalent cyclic group, an organic group, or a group constituted by trivalent nitrogen; Z is a single bond, —O—, —COO—, or —OCO—; and Q is a monovalent group represented by Formula (Q-1): in Formula (Q-1), Ra is a hydrogen atom, —O., —OH, an alkyl group, or an alkenyl group, a terminal group (—CH3) is optionally substituted with —NHR2 or —NR3R4, and here R3 and R4 are an alkyl group.
    Type: Grant
    Filed: December 25, 2018
    Date of Patent: April 13, 2021
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Kazuo Okumura, Michiko Sawada
  • Patent number: 10975306
    Abstract: Provide are a liquid crystal compound represented by formula I, and a liquid crystal mixture comprising the compound A lateral trifluoromethyl-containing liquid crystal compound having the structural characteristics of Formula I not only has a negative dielectric anisotropy (??), an appropriate optical anisotropy (?n), a higher clearing point (CP), a prominent low-temperature miscibility with other liquid crystals, and a low rotary viscosity (?1), but also has a good stability to UV and high temperatures, particularly, a negative dielectric anisotropy. Same can be applied to the formulation of liquid crystal compositions of positive and negative types, and it is particularly prominent that same has the advantages of a good solubility at low temperatures and a high transmittance.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: April 13, 2021
    Assignee: Shijiazhuang Chengzhi Yonghua Display Material Co., Ltd.
    Inventors: Zhian Liang, Wei Zhang, Kai Xu, Kui Wang, Yang Xiang, Shen Yuan, Minsheng Guo, Limei Zhang
  • Patent number: 10975307
    Abstract: Disclosed is a liquid crystalline epoxy compound wherein an epoxy group is positioned at a side chain of the longer direction of a mesogen group and each of the mesogen group and the epoxy group is connected to the center of the molecular structure through a flexible linkage. Since the liquid crystalline epoxy compound includes an epoxy group positioned at a side chain of the longer direction of a mesogen group and each of the mesogen group and the epoxy group is connected to the center of the molecular structure through a flexible linkage, the interaction between the mesogens in a cured resin product occurs significantly without weakening even after curing, thereby improving the heat conductivity of the resin compound through the active heat transfer between the mesogens.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: April 13, 2021
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Munju Goh, Hyeonuk Yeo, Nam Ho You, Se Gyu Jang, Seokhoon Ahn, Young Soo Kim
  • Patent number: 10921623
    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: December 11, 2018
    Date of Patent: February 16, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Koichi Miyachi, Masanobu Mizusaki, Tsuyoshi Okazaki, Hiroshi Tsuchiya, Isamu Miyake, Toshihiro Matsumoto
  • Patent number: 10920146
    Abstract: Provided is a liquid crystal composition, which comprises a component prepared from one or more compounds selected from a general formula I; and a component prepared from one or more compounds selected from a general formula II. The liquid crystal composition has the characteristics of low viscosity, high reliability, appropriate optical anisotropy, and appropriate dielectric anisotropy, and is applicable to liquid crystal display devices.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: February 16, 2021
    Assignee: Jiangsu Hecheng Display Technology Co., Ltd.
    Inventors: Haibin Xu, Wenming Han, Shuang Xu, Panpan Wang, Li Wang
  • Patent number: 10913897
    Abstract: Compounds of the formula I, and liquid-crystalline media, preferably having a nematic phase and negative dielectric anisotropy, comprising a) one or more compounds of the formula I and one or more compounds selected from b) one or more compounds of formula II and/or c) one or more compounds selected from compounds of formulae III-1 to III-4 and formula B Methods for making and using these liquid-crystalline media in electro-optical displays, particularly in active-matrix displays based on the VA, ECB, PALC, FFS or IPS effect and the displays which contain these media. Methods for stabilizing liquid-crystalline media with compounds of formula I, where the liquid-crystalline media comprise one or more compounds of the formula II and one or more compounds selected from compounds of the formulae III-1 to III-4 and formula B.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: February 9, 2021
    Assignee: MERCK PATENT GMBH
    Inventors: Martin Engel, Sabrina Maag, Ingo Almeroth, Rocco Fortte, Achim Goetz, Thorsten Kodek, Oliver Heppert
  • Patent number: 10907100
    Abstract: Compounds of formula I, and liquid-crystalline media, preferably having a nematic phase and negative dielectric anisotropy, comprising: a) one or more compounds of formula I and one or more other compounds selected from: b) one or more compounds of formula II and/or c) one or more compounds selected from compounds of formulae III-1 to III-4 and B Use thereof in electro-optical displays, particularly in active-matrix displays based on the VA, ECB, PALC, FFS or IPS effect and use of compounds of formula I for stabilisation of liquid-crystalline media which comprise one or more compounds of formula II and/or one or more compounds selected from compounds of formulae III-1 to III-4 and B.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: February 2, 2021
    Assignee: Merck Patent GmbH
    Inventors: Martin Engel, Sabrina Maag, Ingo Almeroth, Rocco Fortte, Achim Goetz, Thorsten Kodek, Oliver Heppert
  • Patent number: 10868257
    Abstract: Novel dithiopyrrolopyrrole derivatives having dichroic properties which have very high photostability in solution in a liquid-crystalline host are proposed.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: December 15, 2020
    Assignee: Merck Patent GmbH
    Inventors: Peer Kirsch, Susann Beck, Michael Junge, Ursula Patwal, Mila Fischer
  • Patent number: 10858588
    Abstract: The present invention discloses a negative dielectric anisotropic liquid crystal composition, characterized in that the liquid crystal composition comprises one or more compounds represented by formula I, one or more compounds represented by formula II, one or more compounds represented by formula III and one or more compounds represented by formula IV, In the liquid crystal molecules of the composition, the van der Waals force therebetween is used as a motive force, such that the liquid crystal molecules generate an attractive force at an appropriate distance and positional relationships, thereby enabling the liquid crystal molecules to have excellent regular alignment characteristics, which is favorable for the liquid crystal molecules to modulate the transmission and blocking of light in the liquid crystal display device.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: December 8, 2020
    Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.
    Inventors: Mingxia Wang, Xing Zhang, Huifang Wang, Guofang Wang, Jianming Cheng, Zhe Shao, Guoliang Yun
  • Patent number: 10774061
    Abstract: The invention relates to a liquid-crystalline medium, preferably having a nematic phase and dielectric anisotropy of 0.5 or more, which comprises one or more compounds of formula S in which denotes and to the use thereof in an electro-optical display, particularly in an active-matrix display based on the 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 S for the improvement of the transmission and/or response times of a liquid-crystalline medium which comprises one or more additional mesogenic compounds.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: September 15, 2020
    Assignee: Merck Patent GmbH
    Inventors: Atsutaka Manabe, Constanze Brocke, Brigitte Schuler, Ramin Tavakoli
  • Patent number: 10774263
    Abstract: A liquid-crystalline medium, preferably having a nematic phase and exhibiting a dielectric anisotropy of 0.5 or more, which contains compounds of formula B and formula S in which denotes denotes the use thereof in an electro-optical display, particularly in an active-matrix display based on the IPS or FFS effect, displays of this type which contain a liquid-crystalline medium of this type, and the use of the compounds of formula S for the improvement of the transmission and/or response times of a liquid-crystalline medium which contains one or more additional mesogenic compounds.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: September 15, 2020
    Assignee: MERCK PATENT GMBH
    Inventors: Atsutaka Manabe, Constanze Brocke, Herbert Plach
  • Patent number: 10752838
    Abstract: An object of the present invention is to provide a composition that realizes high ?n, has a wide liquid crystal phase temperature range, small viscosity, excellent low-temperature solubility, and high resistivity and voltage holding ratio, and is stable against heat and light, and to provide a liquid crystal composition having an excellent lens effect and excellent chemical stability using the composition, and a liquid crystal display device and a liquid crystal lens that use the liquid crystal composition. The present invention provides a liquid crystal composition that contains one or two or more compounds represented by general formula (i) and one or two or more compounds represented by general formula (ii), a liquid crystal display device using the liquid crystal composition, a liquid crystal lens using the liquid crystal composition, and a birefringence lens for stereoscopic image display using the liquid crystal composition.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: August 25, 2020
    Assignee: DIC CORPORATION
    Inventor: Haruki Ohishi
  • Patent number: 10745617
    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: November 20, 2017
    Date of Patent: August 18, 2020
    Assignee: VVI BRIGHT CHINA LTD
    Inventors: Xinhua Chen, R. Amaranatha Reddy
  • Patent number: 10723950
    Abstract: The present application relates to mixtures which have liquid-crystalline properties. The application furthermore relates to the use of the mixtures in devices which regulate the transmission of light through an area element.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: July 28, 2020
    Assignee: MERCK PATENT GMBH
    Inventors: Michael Junge, Ursula Patwal, Peer Kirsch
  • Patent number: 10723947
    Abstract: Provided is a liquid crystal composition, comprising: one or more compounds of general formula I accounting for 1-30% of the total weight of the liquid crystal composition; one or more compounds of general formula II accounting for 1-30% of the total weight of the liquid crystal composition; one or more compounds of general formula III accounting for 1-20% of the total weight of the liquid crystal composition; and one or more compounds of general formula IV accounting for 30-80% of the total weight of the liquid crystal composition. The liquid crystal composition has at least one of the following properties: a large specific resistance, a high voltage holding ratio, a suitable optical anisotropy, a large dielectric anisotropy, a small viscosity, a low threshold voltage, etc., and is also green and environmentally friendly.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: July 28, 2020
    Assignee: JIANGSU HECHENG DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Yunyun Liu, Wenming Han, Wenquan Ding, Pengfei Li, Haibin Xu, Lifang Yao, Di He, Wenyang Ma, Heming Zhang, Junqiang Zhang
  • Patent number: 10711195
    Abstract: The present invention relates to liquid crystal mixtures comprising one or more compounds of the formula A and, in addition one or more compounds of formula I or one or more compounds of formula II wherein the individual radicals have the respective meanings indicated in claim 1, to the use thereof for high-frequency components, and to high-frequency components, in particular antennae, especially for the gigahertz range, comprising these media.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: July 14, 2020
    Assignee: Merck Patent GmbH
    Inventors: Atsutaka Manabe, Christian Jasper, Volker Reiffenrath, Constanze Brocke, Detlef Pauluth, Dagmar Klass, Renate Seeger
  • Patent number: 10711194
    Abstract: The present invention provides a liquid crystal composition comprising one or more compounds of general formula I and one or more compounds of general formula II; the liquid crystal composition of the present invention can work at very high and very low temperatures, has a very short response time and a better reliability to light and heat, and particularly exhibits no image retention or a significantly reduced image retention after a long time operation.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: July 14, 2020
    Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.
    Inventors: Mingxia Wang, Sumin Kang, Guoliang Yun
  • Patent number: 10703974
    Abstract: Provided is a liquid crystal compound represented by formula I, the compound having a positive dielectric anisotropy, a great elastic constant and a good solubility. Further provided is a liquid crystal composition comprising the liquid crystal compound represented by formula I, the liquid crystal composition having a good stability against light and heat, a lower viscosity, a wider refractive index that may be achieved by the adjustment of the monomer ratio, and a higher clearing point (a very wide service temperature range), and in particular, the liquid crystal composition has a higher light transmittance, thus allowing a display device to have a higher brightness or an energy saving effect.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: July 7, 2020
    Assignee: SHIJIAHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.
    Inventors: Guoliang Yun, Ke-Lun Shu, Zhe Shao, Xing Zhang, Jianming Cheng, Limei Zhang
  • Patent number: 10705365
    Abstract: The present application concerns a switchable device for the regulation of light transmission, which has a compartmented structure, where the switching state of each of the compartments can be controlled individually.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: July 7, 2020
    Assignee: MERCK PATENT GMBH
    Inventor: Casper Laurens Van Oosten
  • Patent number: 10676670
    Abstract: The present invention relates to liquid-crystalline media comprising one or more compounds of formula T 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: December 14, 2015
    Date of Patent: June 9, 2020
    Assignee: MERCK PATENT GMBH
    Inventors: Michael Wittek, Dagmar Klass
  • Patent number: 10676669
    Abstract: A compound represented by formula (1), a liquid crystal composition containing the compound, and a liquid crystal display device including the composition. R is alkyl having 1 to 15 carbons or the like; ring A1 and ring A2 are independently 1,4-cyclohexylene, 1,4-phenylene or the like; Z1 and Z2 are independently a single bond, —COO— or the like; Y1, Y2 and Y3 are independently hydrogen, fluorine or chlorine; and m is 0, 1 or 2.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: June 9, 2020
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Mayumi Goto, Sayaka Fujimori
  • Patent number: 10655063
    Abstract: Provided are a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature, low minimum temperature, low viscosity, suitable optical anisotropy and large negative dielectric anisotropy, or 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 large negative dielectric anisotropy as a first component, and a specific compound having high maximum temperature or low viscosity as a second component, and may contain a specific compound having negative dielectric anisotropy as a third component, or a specific compound having a polymerizable group as an additive.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: May 19, 2020
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Masayuki Saito, Eriko Kurihara
  • Patent number: 10655064
    Abstract: The present invention provides a novel liquid crystal material composition comprising one or more compound, in order to achieve the properties of low viscosity, high resistivity, good low-temperature mutual solubility, fast response, excellent transmission, and which can be used for a variety of fast response display modes. Since the working temperature of a LCD material is subjected to the temperature range of individual LC molecules, information can only be displayed in a specific temperature range of the specific liquid crystal macro-alignment phase. At low temperature, the viscosity of liquid crystal increases exponentially, which in turn substantially reduces the response speed and overall performances of the display system.
    Type: Grant
    Filed: July 25, 2014
    Date of Patent: May 19, 2020
    Assignee: BEIJING BAYI SPACE LCD TECHNOLOGY CO., LTD
    Inventors: Tianmeng Jiang, Huiqiang Tian, Shihong Chu, Haiguang Chen, Lilong Gao, Quanzhi Ban, Xianli Liang
  • Patent number: 10647921
    Abstract: A liquid crystal composition includes a polymerizable compound (or polymer) and a polar compound, where the homeotropic alignment of liquid crystal molecules can be achieved by the action of these compounds, and a liquid crystal display device includes such a composition. A nematic liquid crystal composition has positive dielectric anisotropy and includes a polymerizable compound as a first additive and a polar compound as a second additive, and the composition may include a specific liquid crystal compound having a large positive dielectric anisotropy and a specific liquid crystal compound having a high maximum temperature or a small viscosity, and a liquid crystal display device includes such a composition.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: May 12, 2020
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Naoko Matsuda, Masayuki Saito
  • Patent number: 10640709
    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, large dielectric anisotropy and a short helical pitch, 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 optically active compound as an additive, and a specific compound having high maximum temperature or small viscosity as a first component, and may contain a specific compound having positive dielectric anisotropy as a second component, or a specific compound having negative dielectric anisotropy as a third component.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: May 5, 2020
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventor: Masayuki Saito
  • Patent number: 10633589
    Abstract: Provided are a liquid-crystal-medium having stability to heat, light and so forth, a wide liquid-crystal-phase temperature-range and significantly large dielectric-anisotropy and developing an optically isotropic liquid-crystal-phase; and various optical-devices used in a wide temperature-range, having short response-time, a large contrast-ratio and low drive-voltage and suppressing decrease in an effective dielectric-constant in a high-frequency range.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: April 28, 2020
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Hitoshi Tobata, Eiji Okabe
  • Patent number: 10626666
    Abstract: The present application relates to a device for regulating the passage of light which is characterised in that it comprises a layer comprising a liquid-crystalline mixture containing a characteristic structural element.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: April 21, 2020
    Assignee: Merck Patent GmbH
    Inventors: Michael Junge, Andreas Beyer, Ursula Patwal, Peer Kirsch, Susann Beck
  • Patent number: 10611964
    Abstract: A polymerizable compound has a high polymerizability, a high conversion ratio and a high solubility in a liquid crystal composition. A polymerizable composition contains the compound. A liquid crystal composite is prepared from the composition. A liquid crystal display device includes the liquid crystal composite. The polymerizable compound is formed in which the polymerizable compound has at least two polymerizable groups in which at least one polymerizable group is acryloyloxy or methacryloyloxy, and at least one remaining polymerizable group is a polymerizable group selected from the group of groups represented by formulas (P-1), (P-2) and (P-3). In formulas (P-1) to (P-3), R1 to R8 are independently hydrogen, fluorine, methyl, ethyl or trifluoromethyl.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: April 7, 2020
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Masahide Kobayashi, Yasuyuki Gotoh, Mayumi Goto
  • Patent number: 10597583
    Abstract: Shown are a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature, low minimum temperature, low viscosity, suitable optical anisotropy and large negative dielectric anisotropy, or 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 large negative dielectric anisotropy as a first component, and a specific compound having low viscosity as a second component, and may contain a specific compound having negative dielectric anisotropy as a third component, a specific compound having high maximum temperature or low viscosity as a fourth component, or a specific compound having a polymerizable group as an additive.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: March 24, 2020
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Atsushi Sakamoto, Masayuki Saito
  • Patent number: 10584284
    Abstract: A compound represented by formula (1), a liquid crystal composition to which the compound is added, and a liquid crystal display device containing the composition. In formula (1), R1 is hydrogen or alkyl having 1 to 20 carbons, or the like; R2 and R3 are independently methyl, ethyl, isopropyl, or t-butyl; ring A is 1,4-cyclohexylene, 1,4-phenylene or the like; Z is a single bond or alkylene having 1 to 6 carbons, or the like; and m is 0, 1, or 2.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: March 10, 2020
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Yasuyuki Gotoh, Teizi Satou
  • Patent number: 10533136
    Abstract: The disclosure provides a liquid crystalline compound that has at least one of physical properties such as high stability with respect to heat and light, a high clearing point (or a high upper limit temperature), a low lower limit temperature of a liquid crystal phase, a low viscosity, suitable optical anisotropy, large negative dielectric anisotropy, a suitable elastic constant, favorable compatibility with other liquid crystalline compounds at room temperature and low temperatures, a liquid crystal composition including the compound, and a liquid crystal display element including the composition. The compound is represented by Formula (1). Here, R1 is an alkyl group having 2 to 10 carbon atoms in which one —CH2CH2— is substituted with —CH?CH—; R2 is an alkyl group having 1 to 8 carbon atoms; ring A1 is 1,4-cyclohexylene; Y1 and Y2 are hydrogen or fluorine; Z1 is a single bond; and n1 is 1 or 2.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: January 14, 2020
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Akihiro Takata, Atsushi Sakamoto
  • Patent number: 10519377
    Abstract: Disclosed are a liquid crystal composition and a display element or display using the liquid crystal composition, wherein the liquid crystal composition contains one or more compounds of general formulas I, II and III, The liquid crystal composition disclosed in the present invention has an excellent performance, an optical anisotropy in the range of 0.080 to 0.150, a low rotary viscosity, a fast response time, and good chemical, optical and thermal stabilities, and is very suitable for manufacturing liquid crystal display elements, particularly suitable for active matrix display elements, such as active matrix displays using a VA, FFS or IPS mode.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: December 31, 2019
    Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD
    Inventors: Wenxiao Xing, Lei Zhao, Guoliang Yun, Xing Zhang, Gang Wen, RuiXiang Liang, Yuanyuan Zhai, YanLi Dong
  • Patent number: 10519375
    Abstract: The invention relates to a liquid-crystalline medium which comprises at least one compound of the formula I, in which R1 and R1* each, independently of one another, denote an alkyl or alkoxy radical having 1 to 15 C atoms, where, in addition, one or more CH2 groups in these radicals may each be replaced, independently of one another, by in such a way that O atoms are not linked directly to one another, and in which, in addition, one or more H atoms may be replaced by halogen, A1 denotes L1 denotes F, Cl, CF3, OCF3 or CHF2, and to the use thereof for electro-optical purposes, in particular for shutter glasses, 3D applications, in TN, PS-TN, STN, TN-TFT, OCB, IPS, PS-IPS, FFS, PS-FFS and PS-VA-IPS displays.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: December 31, 2019
    Assignee: MERCK PATENT GMBH
    Inventors: Helmut Haensel, Andreas Pohle, Brigitte Schuler, Christian Jasper
  • Patent number: 10509273
    Abstract: A display element, a method for manufacturing the same, and a use thereof are provided. The display element can induce a decrease in driving voltage without reducing a difference in a cell gap, have durability by ensuring proper adhesion characteristics, and, specifically, can effectively overcome a problem of the display element including a vertical alignment adhesive layer, in particular, a problem of increasing driving voltage, which can be generated when the thickness is increased so as to improve the adhesion characteristics.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: December 17, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Jung Sun You, Yoon Kyung Kwon, Dong Hyun Oh, Sung Joon Min, Jin Hong Kim, Jung Woon Kim, Eun Jung Lim
  • Patent number: 10501480
    Abstract: Provided is an optical film which has a maximum absorption at a wavelength in the range of 600 to 680 nm, has a high dichroic ratio, and is excellent in light resistance. The optical film includes: a polymer of a polymerizable liquid crystal compound; and a compound represented by the following general formula (1).
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: December 10, 2019
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Masao Morimoto, Noriyuki Hida
  • Patent number: 10495797
    Abstract: The present application relates to a liquid crystal composition, a polarizing element and a use of the polarizing element. Since the polarizing element may be prepared by a simple coating process, the guest host type liquid crystal composition of the present application allows not only for reducing the manufacturing cost and lightweight thinning of the polarizing element, but also for manufacturing the polarizing element showing an excellent heat resistant stability without changes of absorption spectrum to transmission spectrum even in a severe condition such as high temperature environment. Such a polarizing element can be applied to various display devices such as liquid crystal display devices, EL display devices, field emission display devices, display devices using electronic papers, projection display devices or piezoelectric ceramic display devices.
    Type: Grant
    Filed: July 4, 2016
    Date of Patent: December 3, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Ji Youn Lee, Sin Young Kim, Moon Soo Park, Dae Hee Lee