Patents by Inventor Izumi Saito
Izumi Saito has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11939511Abstract: The invention relates to a compound of formula I, wherein R11, R21, A11, A, Z, X11, X21, Y11, Y12, Sp11, Sp21, o and p have one of the meanings as given in claim 1. The invention further relates to method of production of a compound of formula I, to the use of said compounds in LC media and to LC media comprising one or more compounds of formula I. Further, the invention relates to a method of production of such LC media, to the use of such media in LC devices, and to LC device comprising a LC medium according to the present invention. The present invention further relates to a process for the fabrication such liquid crystal display and to the use of the liquid crystal mixtures according to the invention for the fabrication of such liquid crystal display.Type: GrantFiled: April 18, 2019Date of Patent: March 26, 2024Assignee: MERCK PATENT GMBHInventors: Lars Lietzau, Simon Siemianowski, Izumi Saito
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Patent number: 11905450Abstract: The invention relates to a compound of formula I, wherein R11, R21, A11, A, Z, X11, X21, Y11, Y12, Sp11, Sp21, o and p have one of the meanings as given in claim 1. The invention further relates to method of production of a compound of formula I, to the use of said compounds in LC media and to LC media comprising one or more compounds of formula I. Further, the invention relates to a method of production of such LC media, to the use of such media in LC devices, and to LC device comprising a LC medium according to the present invention. The present invention further relates to a process for the fabrication such liquid crystal display and to the use of the liquid crystal mixtures according to the invention for the fabrication of such liquid crystal display.Type: GrantFiled: April 18, 2019Date of Patent: February 20, 2024Assignee: MERCK PATENT GMBHInventors: Lars Lietzau, Simon Siemianowski, Izumi Saito, Rocco Fortte
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Publication number: 20230313043Abstract: The present invention relates to an optical component comprising a liquid crystal (LC) medium, operable in the infrared region of the electromagnetic spectrum. The invention further relates to the use of said LC medium in the infrared (IR) region and to devices comprising said optical component. The present invention further relates to an LC medium comprising one or more compounds of the formulae I, II, and III in which the occurring groups and parameters have the meanings defined in claim 1, and preferably one or more compounds of the formula RO in which the occurring groups and parameters have the meanings defined in claim 2.Type: ApplicationFiled: July 6, 2021Publication date: October 5, 2023Applicant: Merck Patent GmbHInventors: Izumi SAITO, Owain Llyr PARRI, Andreas TAUGERBECK, Carsten FRITZSCH, Dagmar KLASS
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Publication number: 20230105959Abstract: The invention relates to a liquid crystal device comprising at least two opposing transparent substrates, at least one liquid crystal switching layer sandwiched between said opposing substrates comprising one or more polymerised photoreactive mesogens of formula I, R11-Sp11-X11[-A-Z]o-A11-CY11?CY12[—C?O]x[—O]y-A[-Z-A]p—X21-Sp21-R21??I wherein R11, R21, A11, A, Z, X11, X21, Y11, Y12, Sp11, Sp21, o, p, x and y have one of the meanings as given in claim 1, and one or more nematogenic compounds, an electrode structure provided on one or both of the opposing substrates, wherein one or more of said substrates are additionally provided with an optical grating or a lens structure adjacent to the LC switching layer. The invention is further related to a method of production of said liquid crystal device, to the use of said Liquid Crystal device in various types of optical and electro-optical devices, and to electro-optical devices comprising the liquid crystal device.Type: ApplicationFiled: February 10, 2021Publication date: April 6, 2023Applicant: Merck Patent GmbHInventors: Benjamin SNOW, Simon SIEMIANOWSKI, Izumi SAITO, Konstantin SCHNEIDER
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Publication number: 20220380673Abstract: Liquid crystal mixtures containing a photoalignment component A) containing a photoreactive mesogen of formula I, a liquid-crystalline component B) containing one or more nematogenic compounds, and a polymerizable component C) containing one or more polymerizable compounds of formula P, Pa-Spa-(Ap)n2-Spb-Pb??P and a method of producing such LC media, the use of such media in LC devices, and LC devices containing such a LC medium, and further a process for the fabrication of such liquid crystal displays and the use of the liquid crystal mixtures for the fabrication of such liquid crystal display.Type: ApplicationFiled: August 19, 2019Publication date: December 1, 2022Applicant: MERCK PATENT GMBHInventors: Simon SIEMIANOWSKI, Helmut HAENSEL, Kristin MUELLER, Julia SPRANG, Izumi SAITO, Qiong TONG
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Patent number: 11353751Abstract: A double layer liquid crystal device comprises a first and a second layer with orthogonal or crossed alignment of the liquid crystal phase of the two layers, in which the first and second layer have first and second alignment aids comprised of a polymerized or polymerizable molecular compound. The layers are aligned by UV photoalignment and vertical self-alignment by the aid of suitable additives.Type: GrantFiled: September 25, 2020Date of Patent: June 7, 2022Assignee: Merck Patent GmbHInventors: Joseph Sargent, Sarabjot Kaur, Simon Siemianowski, Izumi Saito
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Patent number: 11352560Abstract: The invention relates to a compound of formula I, wherein R11, R21, A11, A, Z, X11, X21, Y11, Y12, Sp11, Sp21, o and p have one of the meanings as given in claim 1. The invention further relates to method of production of a compound of formula I, to the use of said compounds in LC media and to LC media comprising one or more compounds of formula I. Further, the invention relates to a method of production of such LC media, to the use of such media in LC devices, and to LC device comprising a LC medium according to the present invention. The present invention further relates to a process for the fabrication such liquid crystal display and to the use of the liquid crystal mixtures according to the invention for the fabrication of such liquid crystal display.Type: GrantFiled: April 18, 2019Date of Patent: June 7, 2022Assignee: Merck Patent GmbHInventors: Lars Lietzau, Simon Siemianowski, Izumi Saito
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Patent number: 11312907Abstract: The invention relates to a compound of formula I, wherein R11, R21, A11, A, Z, X11, X21, Y11, Y12, Sp11, Sp21, o and p have one of the meanings as given in claim 1. The invention further relates to method of production of a compound of formula I, to the use of said compounds in LC media and to LC media comprising one or more compounds of formula I. Further, the invention relates to a method of production of such LC media, to the use of such media in LC devices, and to LC device comprising a LC medium according to the present invention. The present invention further relates to a process for the fabrication such liquid crystal display and to the use of the liquid crystal mixtures according to the invention for the fabrication of such liquid crystal display.Type: GrantFiled: April 18, 2019Date of Patent: April 26, 2022Assignee: Merck Patent GmbHInventors: Lars Lietzau, Simon Siemianowski, Izumi Saito
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Publication number: 20210292652Abstract: The invention relates to a compound of formula I, R11, R21, A11, A, Z, X11, X21, Y11, Y12, Sp11, Sp21, o and p have one of the meanings as given in claim 1. The invention further relates to method of production of a compound of formula I, to the use of said compounds in LC media and to LC media comprising one or more compounds of formula I. Further, the invention relates to a method of production of such LC media, to the use of such media in LC devices, and to LC device comprising a LC medium according to the present invention. The present invention further relates to a process for the fabrication such liquid crystal display and to the use of the liquid crystal mixtures according to the invention for the fabrication of such liquid crystal display.Type: ApplicationFiled: April 18, 2019Publication date: September 23, 2021Applicant: MERCK PATENT GMBHInventors: Lars LIETZAU, Simon SIEMIANOWSKI, Izumi SAITO
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Publication number: 20210284912Abstract: The invention relates to a compound of formula I, wherein R11, R21, A11, A, Z, X11, X21, Y11, Y12, Sp11, Sp21, o and p have one of the meanings as given in claim 1. The invention further relates to method of production of a compound of formula I, to the use of said compounds in LC media and to LC media comprising one or more compounds of formula I. Further, the invention relates to a method of production of such LC media, to the use of such media in LC devices, and to LC device comprising a LC medium according to the present invention. The present invention further relates to a process for the fabrication such liquid crystal display and to the use of the liquid crystal mixtures according to the invention for the fabrication of such liquid crystal display.Type: ApplicationFiled: April 18, 2019Publication date: September 16, 2021Applicant: MERCK PATENT GMBHInventors: Lars LIETZAU, Simon SIEMIANOWSKI, Izumi SAITO, Rocco FORTTE
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Patent number: 11072742Abstract: A liquid-crystalline media (LC media) containing a low-molecular-weight, non-polymer component, and a combination of self-alignment additives for vertical alignment of two or more of the specified kinds (formulae IA to IM). The combination of two or more self-alignment additives affect homeotropic (vertical) alignment of the LC media at a surface or the cell surfaces of a liquid-crystal display (LC display).Type: GrantFiled: December 19, 2018Date of Patent: July 27, 2021Assignee: MERCK PATENT GMBHInventors: Graziano Archetti, Izumi Saito, Rocco Fortte, Edward Plummer, Dmitry Ushakov, Helmut Haensel, Melanie Klasen-Memmer
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Patent number: 11053442Abstract: The invention relates to a liquid crystal mixture characterised in that it comprises one or more photoreactive mesogens of formula I wherein the parameters and groups occurring are defined as indicated in claim 1, to a process for the fabrication of liquid crystal displays using these liquid crystal mixtures and to a liquid crystal display obtainable by this process. The invention further relates to new compounds of formula I.Type: GrantFiled: December 2, 2016Date of Patent: July 6, 2021Assignee: MERCK PATENT GMBHInventors: Kevin Adlem, Alex Davis, Joseph Sargent, Ian Charles Sage, Edward Plummer, Izumi Saito, Rocco Fortte, Helga Haas, Lars Lietzau
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Publication number: 20210130693Abstract: The invention relates to a compound of formula I, wherein R11, R21, A11, A, Z, X11, X21, Y11, Y12, Sp11, Sp21, o and p have one of the meanings as given in claim 1. The invention further relates to method of production of a compound of formula I, to the use of said compounds in LC media and to LC media comprising one or more compounds of formula I. Further, the invention relates to a method of production of such LC media, to the use of such media in LC devices, and to LC device comprising a LC medium according to the present invention. The present invention further relates to a process for the fabrication such liquid crystal display and to the use of the liquid crystal mixtures according to the invention for the fabrication of such liquid crystal display.Type: ApplicationFiled: April 18, 2019Publication date: May 6, 2021Applicant: Merck Patent GmbHInventors: Lars LIETZAU, Simon SIEMIANOWSKI, Izumi SAITO
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Publication number: 20210096431Abstract: A double layer liquid crystal device comprises a first and a second layer with orthogonal or crossed alignment of the liquid crystal phase of the two layers, in which the first and second layer have first and second alignment aids comprised of a polymerized or polymerizable molecular compound. The layers are aligned by UV photoalignment and vertical self-alignment by the aid of suitable additives.Type: ApplicationFiled: September 25, 2020Publication date: April 1, 2021Applicant: Merck Patent GmbHInventors: Joseph SARGENT, Sarabjot KAUR, Simon SIEMIANOWSKI, Izumi SAITO
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Publication number: 20210071081Abstract: The invention relates to a compound of formula I, wherein R11, R21, A11, A, Z, X11, X21, Y11, Y12, Sp11, Sp21, o and p have one of the meanings as given in claim 1. The invention further relates to method of production of a compound of formula I, to the use of said compounds in LC media and to LC media comprising one or more compounds of formula I. Further, the invention relates to a method of production of such LC media, to the use of such media in LC devices, and to LC device comprising a LC medium according to the present invention. The present invention further relates to a process for the fabrication such liquid crystal display and to the use of the liquid crystal mixtures according to the invention for the fabrication of such liquid crystal display.Type: ApplicationFiled: April 18, 2019Publication date: March 11, 2021Applicant: Merck Patent GmbHInventors: Lars LIETZAU, Simon SIEMIANOWSKI, Izumi SAITO
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Publication number: 20200255740Abstract: The invention relates to a liquid crystal mixture characterised in that it comprises one or more photoreactive mesogens of formula I wherein the parameters and groups occurring are defined as indicated in claim 1, to a process for the fabrication of liquid crystal displays using these liquid crystal mixtures and to a liquid crystal display obtainable by this process. The invention further relates to new compounds of formula I.Type: ApplicationFiled: December 2, 2016Publication date: August 13, 2020Applicant: MERCK PATENT GMBHInventors: Kevin ADLEM, Alex DAVIS, Joseph SARGENT, Ian Charles SAGE, Edward PLUMMER, Izumi SAITO, Rocco FORTTE, Helga HAAS, Lars LIETZAU
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Patent number: 10513657Abstract: The present invention relates to liquid-crystalline media (LC media) having negative or positive dielectric anisotropy, comprising a low-molecular-weight component and a polymerizable component. The polymerizable component comprises self-aligning, polymerizable mesogens (polymerizable self-alignment additives) which effect homeotropic (vertical) alignment of the LC media at a surface or the cell walls of a liquid-crystal display (LC display). The invention therefore also encompasses LC displays having homeotropic alignment of the LC medium without alignment layers. The invention discloses novel structures for self-alignment additives which have a certain position of the functional groups.Type: GrantFiled: November 3, 2017Date of Patent: December 24, 2019Assignee: Merck Patent GmbHInventors: Graziano Archetti, Izumi Saito, Rocco Fortte, Thorsten Kodek
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Publication number: 20190185754Abstract: A liquid-crystalline media (LC media) containing a low-molecular-weight, non-polymer component, and a combination of self-alignment additives for vertical alignment of two or more of the specified kinds (formulae IA to IM). The combination of two or more self-alignment additives affect homeotropic (vertical) alignment of the LC media at a surface or the cell surfaces of a liquid-crystal display (LC display).Type: ApplicationFiled: December 19, 2018Publication date: June 20, 2019Applicant: MERCK PATENT GMBHInventors: Graziano ARCHETTI, Izumi SAITO, Rocco FORTTE, Edward Plummer, Dmitry USHAKOV, Helmut HAENSEL, Melanie KLASEN-MEMMER
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Patent number: 10294426Abstract: The present invention relates to liquid-crystalline media (LC media) having negative or positive dielectric anisotropy, comprising a low-molecular-weight component and a polymerizable component. The polymerizable component comprises self-aligning, polymerizable mesogens (polymerizable self-alignment additives) which effect homeotropic (vertical) alignment of the LC media at a surface or the cell walls of a liquid-crystal display (LC display). The invention therefore also encompasses LC displays having homeotropic alignment of the LC medium without alignment layers. The invention discloses novel structures for polymerizable self-alignment additives which have a certain position of the functional groups.Type: GrantFiled: June 25, 2015Date of Patent: May 21, 2019Assignee: MERCK PATENT GMBHInventors: Graziano Archetti, Izumi Saito, Rocco Fortte, Oliver Heppert, Andreas Taugerbeck, Elena Neumann
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Patent number: 10190049Abstract: The invention relates to mesogenic media comprising one or more bimesogenic compounds, one or more nematogenic compound, one or more chiral compound and a compound of formula I, R11-A11-(Z12-A12)m-AG??I in which, the parameter A11, A12, Z12 and R11 have one of the meanings as given in claim 1, and to the use of these mesogenic media in liquid crystal devices and in particular in flexoelectric liquid crystal devices, as well as to liquid crystal devices comprising a liquid crystal medium according to the present invention.Type: GrantFiled: June 15, 2015Date of Patent: January 29, 2019Assignee: MERCK PATENT GMBHInventors: Owain Ilyr Parri, Graziano Archetti, Simon Siemianowski, Izumi Saito, Rachel Tuffin