Patents Examined by Geraldina Visconti
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Patent number: 12043781Abstract: Liquid-crystalline (LC) media having positive dielectric anisotropy and liquid-crystal displays (LCDs) containing these media, especially displays addressed by an active matrix and in particular to LC displays of the TN, PS-TN, STN, TN-TFT, OCB, IPS, PS-IPS, FFS, HB-FFS, XB-FFS, PS-FFS, SA-HB-FFS, SA-XB-FFS, polymer stabilised SA-HB-FFS, polymer stabilised SA-XB-FFS, positive VA or positive PS-VA type.Type: GrantFiled: April 8, 2021Date of Patent: July 23, 2024Assignee: MERCK PATENT GMBHInventors: Sven Christian Laut, Sabrina Pfeiffer, Philipp Hans Fackler
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Patent number: 12043782Abstract: The present invention relates to a liquid crystalline medium comprising dichroitic dyes made of benzothiadiazoles and related extended heterocyclic derivatives, the use of said medium for optical, electro-optical and electronic purposes, in particular in devices for regulating the passage of radiation energy from an outside space into an inside space, for example in windows. The invention further relates to devices containing the liquid crystalline medium according to the invention. Some new dichroitic dyes are disclosed.Type: GrantFiled: June 17, 2019Date of Patent: July 23, 2024Assignee: MERCK PATENT GMBHInventors: Christoph Wetzel, Peer Kirsch, Susann Gunst, Andreas Ruhl, Andrea Ritter, Rene Lutz, Michael Junge
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Patent number: 12043783Abstract: A liquid crystal composition containing a benzochromene compound and the use thereof in a liquid crystal display element or liquid crystal display. The liquid crystal composition comprises one or more compounds represented by Formula I and one or more compounds represented by Formula II. The liquid crystal composition has the characteristics of a small rotational viscosity, a large elastic constant, a high transmittance, a fast response speed, a strong resistance to ultraviolet light irradiation, and a high long-time light stability, and is particularly suitable for the field of TV display.Type: GrantFiled: November 17, 2022Date of Patent: July 23, 2024Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.Inventors: Xiaolong Wang, Qing Cui, Yunxia Qiao, Yan Wang, Shuai Zhao, Hao Liu
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Patent number: 12044872Abstract: The present invention relates to a method for manufacturing an optical element including a layer comprising anisotropic optical function and alignment capability. The layer is formed from a composition comprising polymerizable liquid crystals and one or more photo-orientable substances. Alignment on top of the layer is achieved by exposure to linearly polarized light.Type: GrantFiled: October 19, 2021Date of Patent: July 23, 2024Assignee: ROLIC TECHNOLOGIES AGInventors: Fabien Xavier Delbaere, Richard Frantz, Qian Tang, Jean-Francois Eckert, Patricia Scandiucci De Freitas, Hubert Seiberle
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Patent number: 12037530Abstract: The present invention provides a compound having an excellent amount of change in HTP and an excellent HTP saturation rate during exposure, and a liquid crystal composition including the compound. The compound of the present invention is a compound represented by General Formula (A). (Y)n-G-(X)m?? (A) G represents a group represented by General Formula (B-1) or a group represented by General Formula (B-2), * represents a bonding position, and X and Y represent a predetermined group.Type: GrantFiled: August 17, 2022Date of Patent: July 16, 2024Assignee: FUJIFILM CorporationInventors: Yuki Fukushima, Keisuke Kodama, Shunya Katoh
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Patent number: 12031079Abstract: The invention relates to a polymerisable LC medium with flat, negative or positive optical dispersion, a polymer film with flat, negative or positive optical dispersion obtainable from such a material, and the use of the polymerisable LC medium and polymer film in optical, electro optical, electronic, semiconducting or luminescent components or devices.Type: GrantFiled: August 13, 2018Date of Patent: July 9, 2024Assignee: MERCK PATENT GMBHInventors: Eduardo Beltran Gracia, Kevin Adlem, Naomi Weare, Hassan Norouzi-Arasi
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Patent number: 12031078Abstract: The present invention relates to a switching layer based on a liquid-crystalline mixture for use in an optical switching element. The invention also encompasses a switching element comprising the switching layer and a window element containing the switching element. The liquid crystalline mixture comprises a low-molecular liquid crystal component, a polymer component and a self-alignment additive for vertical alignment.Type: GrantFiled: July 17, 2017Date of Patent: July 9, 2024Assignee: MERCK PATENT GMBHInventors: Dong-Mee Song, Jung-Min Lee, Yong-Hyun Choi, Yong-Kuk Yun
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Patent number: 12024664Abstract: The present invention belongs to the technical field of liquid crystal materials, and in particular relates to a liquid crystal composition with good frequency dependence and a liquid crystal display element or liquid crystal display containing the liquid crystal composition. The liquid crystal composition of the present invention comprises a compound represented by Formula I, a compound represented by Formula II and a compound represented by Formula III, wherein the mass percentage content of the compound represented by Formula I is not less than 30%. The liquid crystal composition provided by the present invention has an appropriate optical anisotropy, an appropriate dielectric anisotropy, especially a relatively low rotational viscosity, a good low-temperature mutual solubility and a good reliability, especially good frequency dependence.Type: GrantFiled: December 12, 2022Date of Patent: July 2, 2024Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.Inventors: Hongru Gao, Wenxiao Xing, Meida Pan, Qing Cui, Gang Wen, Jikai Li
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Patent number: 12024665Abstract: Disclosed are a polymer-stabilized liquid crystal composition and the use thereof. The composition comprises one or two polymerizable compounds represented by general formula I: (I), and further comprises a negative dielectric anisotropy liquid crystal composition, wherein the negative dielectric anisotropy liquid crystal composition has a dielectric anisotropy of ????1.5; and the added amount of the polymerizable compound(s) represented by general formula I is 0.1-0.5% of the total mass of the negative dielectric anisotropy liquid crystal composition. A polymer film formed after the polymerization of the provided liquid crystal composition containing the polymerizable compound(s) has a very good uniformity, such that the problem of liquid crystal displays having poor display can be improved.Type: GrantFiled: August 22, 2019Date of Patent: July 2, 2024Assignee: BEIJING BAYI SPACE LCD TECHNOLOGY CO., LTD.Inventors: Maoxian Chen, Shihong Chu, Haiguang Chen, Tianmeng Jiang, Xin Wei
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Patent number: 12018198Abstract: Some variations provide an oligomer composition comprising: polarizable first thermotropic liquid-crystal oligomer molecules (preferably urethanes or ureas) containing first triggerable reactive end groups, wherein the first triggerable reactive end groups are selected from the group consisting of hydroxyl, isocyanate, blocked isocyanate, acrylate, epoxide, amine, vinyl, ester, thiol, conjugated diene, substituted alkene, furan, maleimide, anthracene, and combinations thereof, and wherein the polarizable first thermotropic liquid-crystal oligomer molecules are characterized by a weight-average molecular weight from about 200 g/mol to about 10,000 g/mol; optionally, a plurality of polarizable second thermotropic liquid-crystal oligomer molecules containing second triggerable reactive end groups, wherein the second triggerable reactive end groups are capable of reacting with the first triggerable reactive end groups; and optionally, a reactive coupling agent capable of reacting with the first triggerable reactiType: GrantFiled: December 28, 2022Date of Patent: June 25, 2024Assignee: HRL Laboratories, LLCInventors: Ashley Dustin, Adam Gross, Andrew Nowak, Adam Sorensen
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Patent number: 12012541Abstract: This invention relates to a gel comprising a colloid dispersed in a lyotropic nematic liquid crystal, the lyotropic nematic liquid crystal comprising defect lines formed by the colloid. The invention also relates to a method for making the gel comprising the steps of: (a) mixing a nematogen with a liquid and the colloid to form a resulting dispersion, and (b) applying shear to the resulting dispersion at a temperature such that a lyotropic nematic liquid crystal phase is formed. In addition, the invention relates to an adhesive, lubricant, ceramic, film, spray, gel, lotion, foam, nanowire, yarn, medical implant, wearable, bone graft material, 3D printing material, ink, agrochemical formulation, topical formulation, paint, coating, composite, energy storage material, advanced material, responsive composite, cosmetic product, personal care product, pharmaceutical or foodstuff comprising the gel.Type: GrantFiled: June 18, 2020Date of Patent: June 18, 2024Assignee: THE UNIVERSITY COURT OF THE UNIVERSITY OF EDINBURGHInventors: Tiffany Wood, Navneeta Katyan
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Patent number: 12012382Abstract: The invention relates to novel anisotropic compounds of formula as well as to liquid crystalline mixtures, films and electro-optical devices comprising the compound.Type: GrantFiled: June 26, 2020Date of Patent: June 18, 2024Assignee: ROLIC TECHNOLOGIES AGInventors: Shinnosuke Yamauchi, Fabien Nekelson, Sabrina Chappellet
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Patent number: 12006461Abstract: Provided are a light color conversion material and a light color conversion ink. The light color conversion material includes a quantum dot and a cross-linkable cholesteric liquid crystal material. The cross-linkable cholesteric liquid crystal material encapsulates the quantum dot. The cross-linkable cholesteric liquid crystal material has Bragg diffraction characteristic after cross-linking, and blue light with a wavelength between 400 nm and 480 nm may be reflected by the cross-linked cholesteric liquid crystal material and transmitted through the cross-linked cholesteric liquid crystal material at the same time.Type: GrantFiled: May 11, 2022Date of Patent: June 11, 2024Assignee: Industrial Technology Research InstituteInventors: Pao-Ju Hsieh, Mei-Chih Peng
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Patent number: 12006463Abstract: The invention relates to novel anisotropic compounds of formula (I) as well as liquid crystalline mixtures, films and electro-optical devices comprising the compound.Type: GrantFiled: June 26, 2020Date of Patent: June 11, 2024Assignee: ROLIC TECHNOLOGIES AGInventors: Shinnosuke Yamauchi, Fabien Nekelson, Sabrina Chappellet
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Patent number: 12006462Abstract: The present invention belongs to the technical field of liquid crystal materials, and in particular relates to a liquid crystal composition and a liquid crystal display element or liquid crystal display containing the liquid crystal composition. The present invention discloses 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 of the present invention has a large optical anisotropy and a small ratio of ?1/K11, and can be used for developing a liquid crystal display element or liquid crystal display with a low cell thickness and a fast response.Type: GrantFiled: August 25, 2020Date of Patent: June 11, 2024Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.Inventors: Sumin Kang, Zhian Liang, Kui Wang, Guoliang Yun, Wei Zhang
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Patent number: 11999891Abstract: The present invention relates to a liquid-crystal (LC) medium comprising one or more polymerisable compounds and to the use of the LC medium for optical, electro-optical and electronic purposes, in particular in LC displays, especially in LC displays of the polymer sustained alignment (PS, PSA) or self-aligning (SA) type.Type: GrantFiled: December 4, 2019Date of Patent: June 4, 2024Assignee: MERCK PATENT GMBHInventors: Helmut Haensel, Qiong Tong, Edward Plummer, Rocco Fortte, Thomas Eichhorn
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Patent number: 11999892Abstract: A compound that helps achieve a high voltage holding ratio (VHR) of a liquid crystal composition, a liquid crystal composition that contains this compound, and a liquid crystal display element made with this liquid crystal composition. More specifically, a compound represented by general formula (Y), which has polymerizable groups and polar group(s). A liquid crystal composition containing one or two or more compounds represented by general formula (Y), each of which has polymerizable groups and polar group(s). A liquid crystal display element made with a liquid crystal composition that contains one or two or more compounds represented by general formula (Y), each of which has polymerizable groups and polar group(s).Type: GrantFiled: December 10, 2020Date of Patent: June 4, 2024Assignee: DIC CorporationInventors: Yuichi Inoue, Daiki Noro, Yutaka Kadomoto, Hirokazu Sugiyama, Noriyuki Sugiyama
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Patent number: 11993740Abstract: The present disclosure provides a low dielectric resin composition having good melt processability and excellent low dielectric characteristics in a high frequency band as compared to low dielectric materials such as liquid crystal polymers. A molded article and a film, each of which is formed from the low dielectric resin composition, a multilayer film obtained by superposing a metal foil on at least one main surface of the film, and a flexible printed wiring board which includes the film are also provided. The present disclosure includes, as a low dielectric resin composition, a resin composition which contains (A) a liquid crystal polymer and (B) a graft-modified polyolefin having a polar group. The low dielectric resin composition has a dielectric constant of 2.80 or less at a frequency of 10 GHz and a dielectric loss tangent of 0.0025 or less at a frequency of 10 GHz.Type: GrantFiled: October 22, 2021Date of Patent: May 28, 2024Assignee: KANEKA CORPORATIONInventors: Yuichi Imamura, Keisuke Oguma, Masayoshi Kido
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Patent number: 11987742Abstract: Provided is a polymerizable liquid crystal composition with which an image display device having an excellent contrast can be manufactured; and a cured product, an optical film, a polarizing plate, and an image display device. The polymerizable liquid crystal composition contains a compound represented by Formula (I). L1-SP1-D5-(A1)a1-D3-(G1)g1-D1-[Ar-D2]q1-(G2)g2-D4-(A2)a2-D6-SP2-L2 . . . (I), and a compound represented by Formula (II), L5-SP5-D9-(A5)a3-D10-(G3)g3-D11-M . . . (II).Type: GrantFiled: March 17, 2022Date of Patent: May 21, 2024Assignee: FUJIFILM CorporationInventors: Shunya Katoh, Hiroshi Inada, Masaaki Suzuki, Yuki Nakamura
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Patent number: 11976229Abstract: The present invention belongs to the technical field of liquid crystal materials, and in particular relates to a negative liquid crystal composition and a liquid crystal display element or liquid crystal display containing the liquid crystal composition. The present invention discloses a negative dielectric nematic liquid crystal composition, comprising a compound 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 a relatively low rotational viscosity (?1), a high clearing point (Cp), a good solubility and a high stability to heat and light (VHR) on the basis of maintaining an appropriate optical anisotropy (?n), and can be used for developing a liquid crystal display element or liquid crystal display with a low cell thickness, a wide temperature for display, and a fast response.Type: GrantFiled: August 25, 2020Date of Patent: May 7, 2024Assignee: Shijiazhuang Chengzhi Yonghua Display Material Co., ltd.Inventors: Wei Zhang, Qing Cui, Gang Wen, Sumin Kang