Patents by Inventor Bernd Fiebranz
Bernd Fiebranz 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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Publication number: 20200255739Abstract: A light modulation element comprising, preferably consisting of a cholesteric liquid crystalline medium sandwiched between two opposing substrates, an electrode arrangement, which is capable to allow the application of an electric field, which is substantially perpendicular to the main plane of substrate or the layer of the cholesteric liquid-crystalline medium, characterized in that one of the substrates is provided with a processed alignment layer adjacent to the cholesteric liquid crystalline medium and the other substrate is either provided with an unprocessed alignment layer adjacent to the cholesteric liquid crystalline medium or is not provided with an alignment layer. The invention is further related to a method of production of said light modulation element and to the use of said light modulation element in various types of optical and electro-optical devices, such as electro-optical displays, liquid crystal displays (LCDs), non-linear optic (NLO) devices, and optical information storage devices.Type: ApplicationFiled: May 16, 2017Publication date: August 13, 2020Applicant: Merck Patent GmbHInventors: Bernd FIEBRANZ, Peter BEST, Meike KRUMWIEDE, Simon SIEMIANOWSKI
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Publication number: 20190292457Abstract: The invention relates to a light modulation element as comprising, preferably consisting of a cholesteric liquid crystalline medium sandwiched between two opposing substrates, an electrode arrangement, which is capable to allow the application of an electric field, which is substantially perpendicular to the main plane of substrate or the layer of the cholesteric liquid crystalline medium, characterized in that one of the substrates is provided with a planar alignment layer adjacent to the cholesteric liquid crystalline medium and the other substrate is provided with a homeotropic alignment layer adjacent to the cholesteric liquid crystalline medium. The invention is further related to a method of production of said light modulation element and to the use of said light modulation element in various types of optical and electro-optical devices, such as electro-optical displays, liquid crystal displays (LCDs), non-linear optic (NLO) devices, and optical information storage devices.Type: ApplicationFiled: May 15, 2017Publication date: September 26, 2019Applicant: Merck Patent GmbHInventors: Bernd FIEBRANZ, Peter BEST, Meike KRUMWIEDE, Simon SIEMIANOWSKI
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Publication number: 20180004045Abstract: The invention relates to a light modulation element comprising a cholesteric liquid crystalline medium sandwiched between two substrates (1), provided with a common electrode structure (2) and a driving electrode structure (3) individually, wherein the substrate with driving and/or common electrode structure is additionally provided with an alignment electrode structure (4) which is separated from the driving and or common electrode structure on the same substrate by a dielectric layer (5), characterized in that it comprises at least one alignment layer (6) directly adjacent to the liquid crystalline medium. The invention is further related to a method of production of said light modulation element and to the use of said light modulation element in various types of optical and electro-optical devices, such as electro-optical displays, liquid crystal displays (LCDs), non-linear optic (NLO) devices, and optical information storage devices.Type: ApplicationFiled: December 30, 2015Publication date: January 4, 2018Applicant: Merck Patent GmbHInventors: Kuan-Yu CHEN, Ming-Chou WU, Bernd FIEBRANZ, Harald SEIBERT
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Publication number: 20170357131Abstract: The invention relates to a light modulation element comprising a polymer stabilized cholesteric liquid crystalline medium sandwiched between two substrates (1), provided with a common electrode structure (2) and a driving electrode structure (3) individually, wherein the substrate with driving and/or common electrode structure is additionally provided with an alignment electrode structure (4) which is separated from the driving and or common electrode structure on the same substrate by an dielectric layer (5), characterized in that the light modulation element comprises at least one alignment layer (6) directly adjacent to the liquid crystalline medium. The invention is further relates to a method of production of said light modulation element and to the use of said light modulation element in various types of optical and electro-optical devices, such as electro-optical displays, liquid crystal displays (LCDs), non-linear optic (NLO) devices, and optical information storage devices.Type: ApplicationFiled: January 5, 2016Publication date: December 14, 2017Applicant: MERCK PATENT GMBHInventors: Kuan-Yu CHEN, Ming-Chou WU, Bernd FIEBRANZ, Harald SEIBERT
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Publication number: 20170343847Abstract: The invention relates to a light modulation element comprising a cholesteric liquid crystalline medium sandwiched between two substrates, each provided with an electrode structure, wherein at least one of the substrates is additionally provided with an alignment layer which is provided with a photoresist pattern consisting of periodic substantially parallel stripes. The invention is further related to a method of production of said light modulation element and to the use of said light modulation element in various types of optical and electro-optical devices, such as electro-optical displays, liquid crystal displays (LCDs), non-linear optic (NLO) devices, and optical information storage devices.Type: ApplicationFiled: October 8, 2015Publication date: November 30, 2017Applicant: Merck Patent GmbHInventors: Bernd FIEBRANZ, Meike KRUMWIEDE, Simon SIEMIANOWSKI
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Patent number: 8592010Abstract: The invention relates to compensation films for liquid-crystal displays with additions of rod-shaped liquid crystals mentioned below, to polarizer plates which have at least one compensation film of this type, to liquid-crystal displays which have compensation films of the said type, and to processes for the production of the said compensation films, polarizer plates and liquid-crystal displays, to the use of the compounds described in greater detail below as additions to compensation films for liquid-crystal displays, and to further subject-matters of the invention which can be seen below.Type: GrantFiled: February 12, 2010Date of Patent: November 26, 2013Assignees: MERCK PATENT GmbH, LOFO HIGH TECH FILM GmbHInventors: Bernd Fiebranz, Bernhard Rieger, Detlef Pauluth, Axel Jansen, Ulrich Siemann, Ilona Herm
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Patent number: 8273264Abstract: Disclosed are novel liquid-crystal compounds, processes and intermediates for the preparation thereof, the use thereof for optical, electro-optical and electronic purposes, in particular in liquid-crystal (LC) media and LC displays, and to LC media and LC displays containing the same.Type: GrantFiled: January 15, 2010Date of Patent: September 25, 2012Assignee: Merck Patent Gesellschaft Mit Beschrankter HaftungInventors: Axel Jansen, Detlef Pauluth, Bernd Fiebranz, Bernhard Rieger
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Patent number: 8125145Abstract: The present invention relates to OLEDs which have at least one substrate, a 1st electrode, at least one organic light-emitting layer and a 2nd electrode, where either the substrate and the 1st electrode, the 2nd electrode or the substrate and the 1st and 2nd electrodes are transparent, which are characterised in that at least one transparent layer which contains transparent, preferably spherical particles, which protrude at least partially out of the at least one layer is arranged on the substrate and/or the transparent 2nd electrode, to processes for the production thereof, and to the use thereof, in particular in illumination devices and displays.Type: GrantFiled: December 6, 2006Date of Patent: February 28, 2012Assignee: Merck Patent GmbHInventor: Bernd Fiebranz
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Publication number: 20100208181Abstract: The invention relates to compensation films for liquid-crystal displays with additions of rod-shaped liquid crystals mentioned below, to polariser plates which have at least one compensation film of this type, to liquid-crystal displays which have compensation films of the said type, and to processes for the production of the said compensation films, polariser plates and liquid-crystal displays, to the use of the compounds described in greater detail below as additions to compensation films for liquid-crystal displays, and to further subject-matters of the invention which can be seen below.Type: ApplicationFiled: February 12, 2010Publication date: August 19, 2010Applicants: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG, LOFO HIGH TECH FILM GESELLSCHAFT MIT BESCHRANKTER HAFTUNGInventors: Bernd FIEBRANZ, Bernhard RIEGER, Detlef PAULUTH, Axel JANSEN, Ulrich SIEMANN, Llona HERM
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Publication number: 20100181533Abstract: Disclosed are novel liquid-crystal compounds, processes and intermediates for the preparation thereof, the use thereof for optical, electro-optical and electronic purposes, in particular in liquid-crystal (LC) media and LC displays, and to LC media and LC displays containing the same.Type: ApplicationFiled: January 15, 2010Publication date: July 22, 2010Applicant: MERCK KGAAInventors: Axel Jansen, Detlef Pauluth, Bernd Fiebranz, Bernhard Rieger
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Publication number: 20090001883Abstract: The present invention relates to OLEDs which have at least one substrate, a 1st electrode, at least one organic light-emitting layer and a 2nd electrode, where either the substrate and the 1st electrode, the 2nd electrode or the substrate and the 1st and 2nd electrodes are transparent, which are characterised in that at least one transparent layer which contains transparent, preferably spherical particles, which protrude at least partially out of the at least one layer is arranged on the substrate and/or the transparent 2nd electrode, to processes for the production thereof, and to the use thereof, in particular in illumination devices and displays.Type: ApplicationFiled: December 6, 2006Publication date: January 1, 2009Applicant: Merck Patent GmbHInventor: Bernd Fiebranz
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Patent number: 6348245Abstract: The present invention relates to polyimide photo alignment films for liquid crystal display devices comprising an aromatic tetracarboxylic dianhydride component containing 3,3′,4,4′-benzophenone tetracarboxylic dianhydride and an aromatic diamine component containing at least one diamine of the group of fofmulae AI to AIII as given in the text. Further display devices and methods of their fabrication employing a photo alignment process are disclosed.Type: GrantFiled: August 25, 2000Date of Patent: February 19, 2002Assignee: E. I. du Pont de Nemours and CompanyInventors: Brian Carl Auman, Melvin P. Zussman, Bernd Fiebranz, Edgar Böhm
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Patent number: 6139926Abstract: The present invention relates to polyimide photo alignment films for liquid crystal display devices comprising an aromatic tetracarboxylic dianhydride component containing 3,3',4,4'-benzophenone tetracarboxylic dianhydride and an aromatic diamine component containing at least one diamine of the group of formulae AI to AIII as given in the text. Further display devices and methods of their fabrication employing a photo alignment process are disclosed.Type: GrantFiled: May 21, 1998Date of Patent: October 31, 2000Assignees: E. I. du Pont de Nemours and Company, Merck Patent GmbHInventors: Brian Carl Auman, Melvin P. Zussman, Bernd Fiebranz, Edgar Bohm
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Patent number: 5759442Abstract: A polyimide alignment film based on 2,2-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride and ortho-substituted aromatic diamines, such as 2,3,5,6-tetramethyl-p-phenylene diamine, 2,4,6-trimethyl-m-phenylene diamine and 1,5-diaminonaphthalene, providing high voltage holding ratio and high tilt angle when used in active matrix liquid crystal displays.Type: GrantFiled: March 7, 1997Date of Patent: June 2, 1998Assignees: E. I. du Pont de Nemours and Company, Merck Patent GmbHInventors: Brian Carl Auman, Edgar Bohm, Bernd Fiebranz