Including Heterocyclic Ring Patents (Class 252/299.61)
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Patent number: 11976232Abstract: Nonlinear optical chromophore compositions which display lyotropic nematic liquid crystal phases in polar organic solvents and provide a mechanical anisotropic effect allowing for the formation of a non-centrosymmetric chromophore-polymer matrix without the application of an electric field.Type: GrantFiled: December 9, 2022Date of Patent: May 7, 2024Assignee: Lightwave Logic, Inc.Inventors: Cory Pecinovsky, Barry Johnson, Ginelle A. Ramann
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Patent number: 11959005Abstract: The invention relates to novel polymerizable liquid crystals of formula (I), to LCP mixtures comprising these compounds and to their uses for optical and electro-optical devices: with the proviso the at least one of the polymerisable groups G1 or G2 is a naphthalenediyl group.Type: GrantFiled: March 16, 2020Date of Patent: April 16, 2024Assignee: ROLIC TECHNOLOGIES AGInventor: Sabrina Chappellet
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Patent number: 11952527Abstract: A liquid crystal medium containing a compound of formula I and one or more compounds of the formulae IIA, IIB, IIC and IID, useable in optical, electro-optical and electronic purposes, in particular in LC displays.Type: GrantFiled: July 2, 2021Date of Patent: April 9, 2024Assignee: MERCK PATENT GMBHInventors: Sven Christian Laut, Harald Hirschmann, Juergen Radestock
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Patent number: 11932796Abstract: Provided are a liquid crystal composition, a liquid crystal cured layer, an optical film, a polarizing plate, and an image display device, each of which suppresses streak defects and has excellent temporal stability. The liquid crystal composition includes a liquid crystal compound and a basic compound, in which a pKa of a conjugate acid of the basic compound is 4 to 10.Type: GrantFiled: August 11, 2022Date of Patent: March 19, 2024Assignee: FUJIFILM CorporationInventors: Toshikazu Sumi, Toshihiro Konishi, Chie Moriya
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Patent number: 11899038Abstract: 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: GrantFiled: December 18, 2020Date of Patent: February 13, 2024Assignee: Resonac CorporationInventors: Yasunao Miyamura, Yasushi Kadowaki, Kuniaki Yamatake, Masanao Hara, Shigeru Yamaki, Hideki Ohata
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Patent number: 11886081Abstract: 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: GrantFiled: March 13, 2023Date of Patent: January 30, 2024Assignee: JAPAN DISPLAY INC.Inventors: Junko Nagasawa, Hiroya Morimoto, Yuji Maede
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Patent number: 11873438Abstract: 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: GrantFiled: December 18, 2019Date of Patent: January 16, 2024Assignee: MERCK PATENT GMBHInventors: Rachel Tuffin, Matthias Bremer, Marcus Reuter
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Patent number: 11820932Abstract: 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: GrantFiled: September 25, 2017Date of Patent: November 21, 2023Assignee: Merck Patent GmbHInventors: Dong-Mee Song, Yong-Hyun Choi, Jae-Hyun Kang, Yong-Kuk Yun
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Patent number: 11788010Abstract: 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: GrantFiled: October 26, 2022Date of Patent: October 17, 2023Assignee: Jiangsu Hecheng Display Technology Co., Ltd.Inventors: Chenglong Sun, Yafei Yang, Tengyun Zhao, Rongrong Li, Huijuan Dai, Panpan Wang, Di He, Wenquan Ding
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Patent number: 11716874Abstract: 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: GrantFiled: March 31, 2020Date of Patent: August 1, 2023Assignees: Beijing BOE Display Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Yanqiu Li, Juan Yu
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Patent number: 11667840Abstract: 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: GrantFiled: October 23, 2017Date of Patent: June 6, 2023Assignee: Merck Patent GmbHInventors: Atsutaka Manabe, Christian Jasper, Volker Reiffenrath, Constanze Brocke, Detlef Pauluth, Dagmar Klass, Michael Wittek, Renate Seeger, Dmitry Ushakov, Beate Schneider
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Patent number: 11650463Abstract: 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: GrantFiled: December 9, 2021Date of Patent: May 16, 2023Assignee: JAPAN DISPLAY INC.Inventors: Junko Nagasawa, Hiroya Morimoto, Yuji Maede
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Patent number: 11641339Abstract: 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: GrantFiled: June 3, 2021Date of Patent: May 2, 2023Assignee: Intel CorporationInventor: Yifan Yu
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Patent number: 11623971Abstract: 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: GrantFiled: August 19, 2020Date of Patent: April 11, 2023Assignees: Research & Business Foundation Sungkyunkwan University, Kunsan National University Industry-University Cooperation FoundationInventors: Gi Ra Yi, Min Jae Lee, Tae Hui Kang, Yeon Ho Ahn, Duk Joon Kim
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Patent number: 11517860Abstract: 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: GrantFiled: March 8, 2019Date of Patent: December 6, 2022Assignees: Consiglio Nazionale Delle Ricerche, Universitá Di Pisa, Universitá Della CalabriaInventors: Alberto Figoli, Francesco Galiano, Giuseppe Barbieri, Adele Brunetti, Lidietta Giorno, Christian Silvio Pompelli, Cinzia Chiappe, Bartolo Gabriele, Raffaella Mancuso, Yujiro Itami
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Patent number: 11522141Abstract: 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: GrantFiled: June 7, 2021Date of Patent: December 6, 2022Assignee: MERCK PATENT GMBHInventors: Peer Kirsch, Andreas Ruhl, Marc Tornow, Achyut Bora
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Patent number: 11492551Abstract: 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: GrantFiled: September 8, 2021Date of Patent: November 8, 2022Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Takanori Mori, Yoichi Uriu, Eiji Okabe, Hitoshi Tobata
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Patent number: 11466212Abstract: 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: GrantFiled: August 20, 2020Date of Patent: October 11, 2022Assignee: Jiangsu Hecheng Display Technology Co., Ltd.Inventors: Weigang Yan, Wenyang Ma, Wenming Han
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Patent number: 11453824Abstract: 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: GrantFiled: April 20, 2017Date of Patent: September 27, 2022Assignee: Merck Patent GmbHInventors: Harald Hirschmann, Martina Windhorst
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Patent number: 11447703Abstract: 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: GrantFiled: June 26, 2019Date of Patent: September 20, 2022Assignee: Merck Patent GmbHInventors: Atsutaka Manabe, Constanze Brocke, Sven Baran, Sebastian Hofmeyer, Alexander Hahn
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Patent number: 11359142Abstract: 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: GrantFiled: December 18, 2020Date of Patent: June 14, 2022Assignee: Merck Patent GmbHInventors: Atsutaka Manabe, Constanze Brocke, Sebastian Hofmeyer
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Patent number: 11345854Abstract: 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: GrantFiled: September 6, 2019Date of Patent: May 31, 2022Assignee: Jiangsu Hecheng Display Technology Co., Ltd.Inventors: Wenquan Ding, Zhenting Zhou, Panpan Wang
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Patent number: 11312908Abstract: 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: GrantFiled: May 21, 2013Date of Patent: April 26, 2022Assignee: Merck Patent GmbHInventors: Achim Goetz, Hee-Kyu Lee, Mark Goebel
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Patent number: 11299673Abstract: 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: GrantFiled: August 4, 2017Date of Patent: April 12, 2022Assignee: MERCK PATENT GMBHInventors: Ji-Won Jeong, Eun-Kyu Lee, Hyun-Jin Yoon, Min-Ok Jin, Yong-Kuk Yun
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Patent number: 11279879Abstract: 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: GrantFiled: July 25, 2018Date of Patent: March 22, 2022Assignee: MERCK PATENT GMBHInventors: Harald Hirschmann, Sabine Schoen
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Patent number: 11274252Abstract: 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: GrantFiled: December 13, 2016Date of Patent: March 15, 2022Assignee: Merck Patent GmbHInventors: Erik Shipton, Philip Sullivan, Sebastian Gauza
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Patent number: 11261163Abstract: 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: GrantFiled: March 22, 2017Date of Patent: March 1, 2022Assignee: Merck Patent GmbHInventors: Matthias Bremer, Atsutaka Manabe
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Patent number: 11254873Abstract: 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: GrantFiled: April 11, 2019Date of Patent: February 22, 2022Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL, CO., LTD.Inventors: Sumin Kang, Zhian Liang, Ruixiang Liang, Jiaming Li, Guoliang Yun, Xuan Zhang
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Patent number: 11242486Abstract: 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: GrantFiled: April 11, 2019Date of Patent: February 8, 2022Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.Inventors: Sumin Kang, Zhian Liang, Ruixiang Liang, Guoliang Yun, Jiaming Li, Xuan Zhang
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Patent number: 11225605Abstract: 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: GrantFiled: August 1, 2019Date of Patent: January 18, 2022Assignee: FUJIFILM CorporationInventors: Daisuke Hayashi, Satoshi Shimamura, Keita Takahashi
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Patent number: 11208395Abstract: 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: GrantFiled: May 8, 2018Date of Patent: December 28, 2021Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.Inventors: Ming Li, Hongru Gao, Guoliang Yun, Xing Zhang, Jinsong Meng, Li Zhang, Lei Zhao, Yanli Dong
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Patent number: 11180698Abstract: 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: GrantFiled: January 20, 2017Date of Patent: November 23, 2021Assignee: Merck Patent GmbHInventors: Michael Wittek, Dagmar Klass, Peer Kirsch
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Patent number: 11168255Abstract: 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: GrantFiled: July 11, 2019Date of Patent: November 9, 2021Assignee: Merck Patent GmbHInventors: Atsutaka Manabe, Constanze Brocke, Sven Baran, Sebastian Hofmeyer, Alexander Hahn
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Patent number: 11153997Abstract: 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: GrantFiled: December 3, 2019Date of Patent: October 19, 2021Assignee: LG Display Co., Ltd.Inventor: Hyo-Jin Bang
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Patent number: 11098250Abstract: 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: GrantFiled: January 3, 2019Date of Patent: August 24, 2021Assignee: 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
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Patent number: 11099445Abstract: 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: GrantFiled: May 5, 2016Date of Patent: August 24, 2021Assignees: BOE TECHNOLOGY GROUP CO., LTD., KENT STATE UNIVERSITYInventors: Guangkui Qin, Dengke Yang, Xiaochen Zhou
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Patent number: 11066602Abstract: 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: GrantFiled: May 22, 2019Date of Patent: July 20, 2021Assignee: Samsung Display Co., Ltd.Inventor: Ho Lim
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Patent number: 11053441Abstract: 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: GrantFiled: August 4, 2017Date of Patent: July 6, 2021Assignee: Jiangsu Hecheng Display Technology Co., Ltd.Inventors: Haibin Xu, Wenming Han
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Patent number: 11048109Abstract: 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: GrantFiled: September 13, 2016Date of Patent: June 29, 2021Assignee: CASIO COMPUTER CO., LTD.Inventor: Kimiyasu Mizuno
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Patent number: 11046889Abstract: 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: GrantFiled: December 1, 2016Date of Patent: June 29, 2021Assignee: DIC CORPORATIONInventors: Yoshitaka Saito, Tatsufumi Yamazaki, Masahiro Horiguchi, Junichi Mamiya, Toru Tsuruta
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Patent number: 11021654Abstract: 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: GrantFiled: February 26, 2019Date of Patent: June 1, 2021Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.Inventors: Zhian Liang, Guoliang Yun, Yujing Di, Zhe Shao, Sumin Kang, Dongmei Wang
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Patent number: 11015122Abstract: 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: GrantFiled: December 20, 2018Date of Patent: May 25, 2021Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.Inventors: Kui Wang, Mingxia Wang, Zhian Liang, Guoliang Yun, Ke-Lun Shu, Guofang Wang, Huifang Wang
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Patent number: 11015120Abstract: 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: GrantFiled: January 30, 2018Date of Patent: May 25, 2021Assignee: The Hong Kong University of Science and TechnologyInventors: Valerii Vladimirovich Vashchenko, Evgenii Pavlovich Pozhidaev, Abhishek Kumar Srivastava, Vladimir Grigorievich Chigrinov, Hoi Sing Kwok
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Patent number: 11008514Abstract: 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: GrantFiled: October 5, 2016Date of Patent: May 18, 2021Assignee: MERCK PATENT GMBHInventors: Michael Wittek, Dagmar Klass
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Patent number: 10988691Abstract: 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: GrantFiled: July 12, 2016Date of Patent: April 27, 2021Assignee: Merck Patent GmbHInventors: Takanori Takeda, Masahiko Okamura, Norihiko Tanaka, Yasushi Sugiyama
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Patent number: 10975307Abstract: 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: GrantFiled: January 9, 2018Date of Patent: April 13, 2021Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Munju Goh, Hyeonuk Yeo, Nam Ho You, Se Gyu Jang, Seokhoon Ahn, Young Soo Kim
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Patent number: 10975306Abstract: 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: GrantFiled: October 18, 2018Date of Patent: April 13, 2021Assignee: Shijiazhuang Chengzhi Yonghua Display Material Co., Ltd.Inventors: Zhian Liang, Wei Zhang, Kai Xu, Kui Wang, Yang Xiang, Shen Yuan, Minsheng Guo, Limei Zhang
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Patent number: 10975305Abstract: 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: GrantFiled: December 25, 2018Date of Patent: April 13, 2021Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Kazuo Okumura, Michiko Sawada
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Patent number: 10920146Abstract: 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: GrantFiled: November 16, 2016Date of Patent: February 16, 2021Assignee: Jiangsu Hecheng Display Technology Co., Ltd.Inventors: Haibin Xu, Wenming Han, Shuang Xu, Panpan Wang, Li Wang
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Patent number: 10921623Abstract: 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: GrantFiled: December 11, 2018Date of Patent: February 16, 2021Assignee: SHARP KABUSHIKI KAISHAInventors: Koichi Miyachi, Masanobu Mizusaki, Tsuyoshi Okazaki, Hiroshi Tsuchiya, Isamu Miyake, Toshihiro Matsumoto