Including Heterocyclic Ring Patents (Class 252/299.61)
  • Patent number: 11899038
    Abstract: An acceleration sensor is provided in which a sensitive color plate is provided between two polarizing plates that are in a crossed Nicol disposition, and a silver nanowire dispersion is disposed between the sensitive color plate and one of the polarizing plates.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: February 13, 2024
    Assignee: Resonac Corporation
    Inventors: Yasunao Miyamura, Yasushi Kadowaki, Kuniaki Yamatake, Masanao Hara, Shigeru Yamaki, Hideki Ohata
  • Patent number: 11886081
    Abstract: According to one embodiment, a liquid crystal device includes a first liquid crystal cell and a second liquid crystal cell bonded to the first liquid crystal cell. Each of the first liquid crystal cell and the second liquid crystal cell includes a first substrate, a second substrate, a liquid crystal layer, a sealant bonding the first substrate and the second substrate together, one or more first spacers disposed inside the sealant and holding the gap, and a plurality of second spacers disposed in an effective area surrounded by the sealant and holding the gap.
    Type: Grant
    Filed: March 13, 2023
    Date of Patent: January 30, 2024
    Assignee: JAPAN DISPLAY INC.
    Inventors: Junko Nagasawa, Hiroya Morimoto, Yuji Maede
  • Patent number: 11873438
    Abstract: A liquid-crystalline medium with one or more compounds of the formula IA and, one or more compounds of formula BS and the use thereof in an active-matrix display, in particular in a VA, IPS, U-IPS, FFS, UB-FFS, SA-VA, SA-FFS, PS-VA, PS-OCB, PS-IPS, PS-FFS, PS-UB-FFS, PS-poli-VA, PS-TN, polymer stabilized SA-VA or polymer stabilized SA-FFS display.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: January 16, 2024
    Assignee: MERCK PATENT GMBH
    Inventors: Rachel Tuffin, Matthias Bremer, Marcus Reuter
  • Patent number: 11820932
    Abstract: A polymerisable LC material comprising at least one di- or multireactive mesogenic compound and at least one compound of formula CO-1, wherein R1, R2, L1, L2, L3, and n have the meanings as given in claim 1. Furthermore, a method for preparation of the LC material, a polymer film with improved thermal durability obtainable from the corresponding polymerisable LC material, a method of preparation of such polymer film, and the use of such polymer film and said polymerisable LC material for optical, electro-optical, decorative or security devices.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: November 21, 2023
    Assignee: Merck Patent GmbH
    Inventors: Dong-Mee Song, Yong-Hyun Choi, Jae-Hyun Kang, Yong-Kuk Yun
  • Patent number: 11788010
    Abstract: A liquid crystal composition includes at least one compound of general formula F and at least one compound of general formula N. A liquid crystal display device includes the liquid crystal composition. The liquid crystal composition has a larger K value, a smaller rotational viscosity, a higher VHR value, a longer low temperature storage time and a shorter response time while maintaining an appropriate clearing point, an appropriate optical anisotropy, and an appropriate absolute value of dielectric anisotropy, such that the liquid crystal display device including the liquid crystal composition has a better contrast, a wider temperature range for application, a faster response speed, a better contrast and a higher reliability.
    Type: Grant
    Filed: October 26, 2022
    Date of Patent: October 17, 2023
    Assignee: Jiangsu Hecheng Display Technology Co., Ltd.
    Inventors: Chenglong Sun, Yafei Yang, Tengyun Zhao, Rongrong Li, Huijuan Dai, Panpan Wang, Di He, Wenquan Ding
  • Patent number: 11716874
    Abstract: The present disclosure provides a display panel, a display device and a display method. The display panel includes a base substrate, and an organic electroluminescent device layer, a detection sensor and a color switchable structure which are successively located on the base substrate and are insulated from each other, where the organic electroluminescent device layer includes a plurality of sub-pixels, and the color switchable structure includes sub-units disposed in one-to-one correspondence with the sub-pixels; the sub-units are configured to transmit light emitted by the sub-pixels under the control of applied different signals, or to display light of colors corresponding to the applied signals; and the detection sensor is configured to detect display parameters of the sub-pixels or the sub-units.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: August 1, 2023
    Assignees: Beijing BOE Display Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Yanqiu Li, Juan Yu
  • Patent number: 11667840
    Abstract: The present invention relates to liquid-crystalline media comprising one or more compounds of formula DFS in which the groups and parameters occurring have the meanings indicated in claim 1, to high-frequency components comprising same, especially microwave components for high-frequency devices, such as devices for shifting the phase of microwaves, in particular for microwave phased-array antennas. The present invention further relates to novel mesogenic compounds.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: June 6, 2023
    Assignee: Merck Patent GmbH
    Inventors: Atsutaka Manabe, Christian Jasper, Volker Reiffenrath, Constanze Brocke, Detlef Pauluth, Dagmar Klass, Michael Wittek, Renate Seeger, Dmitry Ushakov, Beate Schneider
  • Patent number: 11650463
    Abstract: According to one embodiment, a liquid crystal device includes a first liquid crystal cell and a second liquid crystal cell bonded to the first liquid crystal cell. Each of the first liquid crystal cell and the second liquid crystal cell includes a first substrate, a second substrate, a liquid crystal layer, a sealant bonding the first substrate and the second substrate together, one or more first spacers disposed inside the sealant and holding the gap, and a plurality of second spacers disposed in an effective area surrounded by the sealant and holding the gap.
    Type: Grant
    Filed: December 9, 2021
    Date of Patent: May 16, 2023
    Assignee: JAPAN DISPLAY INC.
    Inventors: Junko Nagasawa, Hiroya Morimoto, Yuji Maede
  • Patent number: 11641339
    Abstract: Technologies for mobile content delivery include an edge computing device, a mobile terminal, and a content delivery network server. The edge computing device has a network location between the mobile terminal and a core network, and the content delivery network server is accessed through the core network. The edge computing device receives a content request from the mobile terminal and modifies the content request to identify the network location of a zone-specific proxy of the edge computing device. The edge computing device forwards the content response to the content delivery network server. The content delivery network server may send a content response to the zone-specific proxy or the mobile terminal. The content response identifies an address of a network content resource. The network content resource is located at a surrogate content delivery network server of the edge computing device. Other embodiments are described and claimed.
    Type: Grant
    Filed: June 3, 2021
    Date of Patent: May 2, 2023
    Assignee: Intel Corporation
    Inventor: Yifan Yu
  • Patent number: 11623971
    Abstract: Disclosed is preparation of a freestanding ion gel having high stability and high ionic conductivity based on surface-activity ionic liquids. Further, disclosed is a solid electrolyte using the ion gel. A method for preparing the freestanding ion gel include mixing a surface-activity ionic liquid having an alkyl group having 8 or greater carbon atoms, a crosslinking agent, water and oil with each other to form a bicontinuous microemulsion mixture; ii) adding an initiator to the mixture; and iii) curing the mixture using ultraviolet (UV) or thermal energy to form a freestanding ion gel.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: April 11, 2023
    Assignees: Research & Business Foundation Sungkyunkwan University, Kunsan National University Industry-University Cooperation Foundation
    Inventors: Gi Ra Yi, Min Jae Lee, Tae Hui Kang, Yeon Ho Ahn, Duk Joon Kim
  • Patent number: 11517860
    Abstract: The invention relates to dense synthetic membranes made from polymerised phosphonium-based ionic liquids which were found to be particularly suitable for use in gas separation. The membranes are obtainable by copolymerization via UV-curing of a composition comprising a phosphonium-based ionic liquid monomer, a co-monomer, a cross-linker, a surfactant and a photo-initiator, the remainder of the polymerization mixture consisting of water. The invention also relates to a process of manufacturing said membranes, resulting in solid, dense and mechanically stable membranes, and to the use of the membranes so produced in the separation of gas mixtures, particularly gas mixtures containing carbon dioxide.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: December 6, 2022
    Assignees: Consiglio Nazionale Delle Ricerche, Universitá Di Pisa, Universitá Della Calabria
    Inventors: Alberto Figoli, Francesco Galiano, Giuseppe Barbieri, Adele Brunetti, Lidietta Giorno, Christian Silvio Pompelli, Cinzia Chiappe, Bartolo Gabriele, Raffaella Mancuso, Yujiro Itami
  • Patent number: 11522141
    Abstract: An electronic switching element is described having, in sequence, a first electrode, a molecular layer bonded to a substrate, and a second electrode. The molecular layer contains compounds of formula I, R1-(A1-Z1)r—B1—(Z2-A2)s-Sp-G, wherein A1, A2, B1, Z1, Z2, Sp, G, r, and s are as defined herein, in which a mesogenic radical is bonded to the substrate via a spacer group, Sp, by means of an anchor group, G. The switching element is suitable for production of components that can operate as a memristive device for digital information storage.
    Type: Grant
    Filed: June 7, 2021
    Date of Patent: December 6, 2022
    Assignee: MERCK PATENT GMBH
    Inventors: Peer Kirsch, Andreas Ruhl, Marc Tornow, Achyut Bora
  • Patent number: 11492551
    Abstract: As a material used in an element used for phase control of an electromagnetic wave signal having a frequency of 1 GHz to 10 THz, a liquid crystal composition is required, which has a high upper limit temperature of a nematic phase, a low lower limit temperature of a nematic phase, large dielectric anisotropy and a small tan ? in a frequency region where the phase control of an electromagnetic wave signal is performed, and stability against heat, and which has an excellent balance of the characteristics. A liquid crystal composition which is used in an element for phase control of an electromagnetic wave signal having any frequency from 1 GHz to 10 THz, the liquid crystal composition containing at least one compound selected from compounds represented by Formula (1) as a first component.
    Type: Grant
    Filed: September 8, 2021
    Date of Patent: November 8, 2022
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Takanori Mori, Yoichi Uriu, Eiji Okabe, Hitoshi Tobata
  • Patent number: 11466212
    Abstract: A liquid crystal composition includes one or more compounds of general Formula I in an amount of 1%-30% by weight of the total weight of the liquid crystal composition, one or more compounds of general Formula II in an amount of 5%-35% by weight of the total weight of the liquid crystal composition, and one or more compounds of general Formula III in an amount of 1%-35% by weight of the total weight of the liquid crystal composition. The liquid crystal composition has an appropriate clearing point, an appropriate optical anisotropy, an appropriate dielectric anisotropy, as well as a higher voltage holding ratio, a higher transmittance, a good high-temperature resistant performance and a faster response speed, thus being suitable for display modes, such as VA, IPS and FFS. A photoelectric display device includes the liquid crystal composition.
    Type: Grant
    Filed: August 20, 2020
    Date of Patent: October 11, 2022
    Assignee: Jiangsu Hecheng Display Technology Co., Ltd.
    Inventors: Weigang Yan, Wenyang Ma, Wenming Han
  • Patent number: 11453824
    Abstract: The invention relates to a liquid-crystalline medium and to the use thereof for an active-matrix display, in particular based on the VA, PSA, PS-VA, PM-VA, SS-VA, PALC, IPS, PS-IPS, FFS or PS-FFS effect.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: September 27, 2022
    Assignee: Merck Patent GmbH
    Inventors: Harald Hirschmann, Martina Windhorst
  • Patent number: 11447703
    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 T in which and the other parameters have the meanings given in the text, 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 compounds of formula T and their use 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 26, 2019
    Date of Patent: September 20, 2022
    Assignee: Merck Patent GmbH
    Inventors: Atsutaka Manabe, Constanze Brocke, Sven Baran, Sebastian Hofmeyer, Alexander Hahn
  • Patent number: 11359142
    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 each of formulae T and L in which the parameters have the meanings given in the claims and in the text. 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. Also, the compounds of formulae T and L and their use 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: December 18, 2020
    Date of Patent: June 14, 2022
    Assignee: Merck Patent GmbH
    Inventors: Atsutaka Manabe, Constanze Brocke, Sebastian Hofmeyer
  • Patent number: 11345854
    Abstract: A liquid crystal dielectric applicable to high-frequency electromagnetic wave modulation has a clearing point of the liquid crystal dielectric higher than 110° C., a low-temperature storage temperature lower than ?20° C., and an optical anisotropy greater than 0.35. The liquid crystal dielectric includes: one or more compounds selected by general formula I, which occupy 30-80% of the total weight of the liquid crystal dielectric, and one or more compounds selected by general formula II and/or general formula III, which occupy 20-70% of the total weight of the liquid crystal dielectric.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: May 31, 2022
    Assignee: Jiangsu Hecheng Display Technology Co., Ltd.
    Inventors: Wenquan Ding, Zhenting Zhou, Panpan Wang
  • Patent number: 11312908
    Abstract: Dielectrically positive liquid-crystalline media comprising a compound of the formula TINUVIN 770 and optionally one or more compounds of formula I, in which the parameters have the respective meanings indicated in the specification, and optionally one or more further dielectrically positive compounds and optionally one or more further dielectrically neutral compounds, and to liquid-crystal displays, especially active-matrix displays and in particular TN, IPS and FFS displays, containing these media.
    Type: Grant
    Filed: May 21, 2013
    Date of Patent: April 26, 2022
    Assignee: Merck Patent GmbH
    Inventors: Achim Goetz, Hee-Kyu Lee, Mark Goebel
  • Patent number: 11299673
    Abstract: A liquid crystal (LC) medium comprising a polymerizable compound, a process for its preparation, its use for optical, electro-optical and electronic purposes, such as LC displays, including LC displays of the polymer sustained alignment (PSA) type, and LC displays, including PSA displays, comprising the LC medium.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: April 12, 2022
    Assignee: MERCK PATENT GMBH
    Inventors: Ji-Won Jeong, Eun-Kyu Lee, Hyun-Jin Yoon, Min-Ok Jin, Yong-Kuk Yun
  • Patent number: 11279879
    Abstract: The invention relates to a liquid-crystalline medium, characterised in that it comprises one or more compounds of the formula IA, and one or more compounds of the formula IB, in which RA, RB, XA, XB and Y1-13 have the meanings indicated in Claim 1, 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: July 25, 2018
    Date of Patent: March 22, 2022
    Assignee: MERCK PATENT GMBH
    Inventors: Harald Hirschmann, Sabine Schoen
  • Patent number: 11274252
    Abstract: A method and apparatus for improved switching speed and/or tunability for radio-frequency (RF) devices are described. In one embodiment, a liquid crystal (LC) component comprises an LC structure in a mixture with right-handed (R) and left-handed (S) chiral dopants.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: March 15, 2022
    Assignee: Merck Patent GmbH
    Inventors: Erik Shipton, Philip Sullivan, Sebastian Gauza
  • Patent number: 11261163
    Abstract: The present invention relates to compounds of formula M in which RM has the meaning indicated in claim 1, to liquid crystal mixture comprising the same, to the use of these liquid-crystal media, in particular in components for high-frequency technology, and to components of this type which contain media according to the invention, and to the production and use of these components. The components according to the invention are suitable, in particular, as phase shifters in the microwave and millimetre wave region, for microwave and millimetre wave array antennae and very particularly for so-called tunable “reflectarrays”.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: March 1, 2022
    Assignee: Merck Patent GmbH
    Inventors: Matthias Bremer, Atsutaka Manabe
  • Patent number: 11254873
    Abstract: A liquid crystal composition, and a liquid crystal display element or liquid crystal display including the liquid crystal composition and belonging to the field of liquid crystal display. The liquid crystal composition includes a compound represented by formula I, a compound represented by formula II, one or more compounds represented by formula III, and at least one polymerizable compound. The liquid crystal composition simultaneously has a low rotary viscosity, a large refractive index, and a fast response speed.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: February 22, 2022
    Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL, CO., LTD.
    Inventors: Sumin Kang, Zhian Liang, Ruixiang Liang, Jiaming Li, Guoliang Yun, Xuan Zhang
  • Patent number: 11242486
    Abstract: A liquid crystal composition, and a liquid crystal display element or liquid crystal display comprising the liquid crystal composition, and belongs to the field of liquid crystal display. The liquid crystal composition comprises a compound represented by formula I, a compound represented by formula II, one or more compounds represented by formula III, and at least one polymerizable compound. The liquid crystal composition has a higher clearing point (CP), a large K value, a suitable optical anisotropy (?n), and a fast response speed.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: February 8, 2022
    Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.
    Inventors: Sumin Kang, Zhian Liang, Ruixiang Liang, Guoliang Yun, Jiaming Li, Xuan Zhang
  • Patent number: 11225605
    Abstract: An object of the present invention is to provide a polymerizable liquid crystal compound having excellent solubility, which is used for the formation of an optically anisotropic film having excellent durability, a method for producing the same, a polymerizable liquid crystal composition, an optically anisotropic film, an optical film, a polarizing plate, and an image display device. The polymerizable liquid crystal compound of the embodiment of the present invention is a polymerizable liquid crystal compound represented by Formula (1), L1-SP1-A1-D3-G1-D1-Ar-D2-G2-D4-A2-SP2-L2 . . . (1) in Formula (1), the ClogP value of the group represented by L1-SP1-A1-D3-G1-D1 and the ClogP value of the group represented by L2-SP2-A2-D4-G2-D2 are different from each other, and at least one of the ClogP values is 3.3 or more.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: January 18, 2022
    Assignee: FUJIFILM Corporation
    Inventors: Daisuke Hayashi, Satoshi Shimamura, Keita Takahashi
  • Patent number: 11208395
    Abstract: The present invention discloses a compound of which a structural formula thereof is represented as the following formula: The compound disclosed by the present invention can be used as a liquid crystal compound and overcomes the problem that solubility of the traditional dibenzothiophene-class liquid crystals is poor, and thus can be better applied to the liquid crystal material field. The present invention further discloses a liquid crystal medium containing the compound and an application thereof.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: December 28, 2021
    Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.
    Inventors: Ming Li, Hongru Gao, Guoliang Yun, Xing Zhang, Jinsong Meng, Li Zhang, Lei Zhao, Yanli Dong
  • 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: 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: 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: 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: 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: 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: 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: 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: 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: 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