Patents by Inventor Helmut Haensel
Helmut Haensel 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: 20190241809Abstract: Liquid-crystalline media (LC media) comprising self-aligning mesogens (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 self-alignment additives contain five-ring systems. LC displays having homeotropic alignment of the liquid-crystalline medium (LC medium) without conventional alignment layers are provided.Type: ApplicationFiled: February 5, 2019Publication date: August 8, 2019Applicant: Merck Patent GmbHInventors: Melanie KLASEN-MEMMER, Edward PLUMMER, Rocco FORTTE, Helmut HAENSEL, Timo UEBEL, Tamara LEHMANN
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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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Publication number: 20180371320Abstract: The invention relates to compounds of the formula I, in which R, A, Z, m, L1, L2, L3 and X have the meanings indicated in Claim 1, to a process for the preparation thereof, and to liquid-crystalline media comprising at least one compound of the formula I and to electro-optical displays containing a liquid-crystalline medium of this type.Type: ApplicationFiled: November 24, 2016Publication date: December 27, 2018Applicant: MERCK PATENT GMBHInventors: Christian JASPER, Susann GUNST, Helmut HAENSEL, Brigitte SCHULER
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Publication number: 20180305619Abstract: The invention relates to a device for the regulation of light transmission, preferably a window, more preferably a privacy window, comprising a liquid crystalline medium exhibiting a converse flexoelectric effect, and which is sandwiched between two substrates, wherein at least one substrate is provided with an electrode structure.Type: ApplicationFiled: September 30, 2016Publication date: October 25, 2018Applicant: MERCK PATENT GMBHInventors: David WILKES, Helmut HAENSEL
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Patent number: 10072209Abstract: The invention relates to liquid-crystalline media which can be used, in particular, for electro-optical displays having active-matrix addressing based on the ECB effect and for IPS (in-plane switching) displays or FFS (fringe field switching) displays.Type: GrantFiled: December 20, 2012Date of Patent: September 11, 2018Assignee: Merck Patent GmbHInventors: Melanie Klasen-Memmer, Marcus Reuter, Rocco Fortte, Detlef Pauluth, Matthias Bremer, Helmut Haensel, Harald Hirschmann
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Publication number: 20180230382Abstract: Liquid-crystalline media which can be used, in particular, for electro-optical displays having active-matrix addressing based on the ECB effect and for IPS (in-plane switching) displays or FFS (fringe field switching) displays.Type: ApplicationFiled: April 12, 2018Publication date: August 16, 2018Inventors: Melanie Klasen-Memmer, Marcus Reuter, Rocco Fortte, Detlef Pauluth, Matthias Bremer, Helmut Haensel, Harald Hirschmann
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Publication number: 20180171231Abstract: The invention relates to the compounds of the formula I and to a liquid-crystalline medium based on a mixture of polar compounds which contains at least one compound of the formula I in which in which R1, R2, ring A1, Z1, Z2, Sp, P, L1, L2, r1, r2, r3, m, n, p1 and p2 have the meanings indicated in Claim 1 and to the use of the LC mixtures in electro-optical displays, especially for the self-aligning VA, PSA, PS-VA, PVA, MVA, PM-VA, HT-VA or VA-IPS mode.Type: ApplicationFiled: September 8, 2016Publication date: June 21, 2018Applicant: Merck Patent GmbHInventors: Graziano ARCHETTI, Elena NEUMANN, Rocco FORTTE, Timo UEBEL, Helmut HAENSEL, Kristin MUELLER
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Patent number: 9982194Abstract: The invention relates to liquid-crystalline media which can be used, in particular, for electro-optical displays having active-matrix addressing based on the ECB effect and for IPS (in-plane switching) displays or FFS (fringe field switching) displays.Type: GrantFiled: March 31, 2015Date of Patent: May 29, 2018Assignee: Mereck Patent GmbHInventors: Melanie Klasen-Memmer, Marcus Reuter, Rocco Fortte, Detlef Pauluth, Matthias Bremer, Helmut Haensel, Harald Hirschmann
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Publication number: 20180142152Abstract: Disclosed are liquid-crystalline media (LC media) comprising a low-molecular-weight component and a polymerisable component. The polymerisable component contains self-aligning, polymerisable mesogens (polymerisable 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). Disclosed are also LC displays having homeotropic alignment of the LC medium without alignment layers. Further disclosed are the structures for polymerisable self-alignment additives.Type: ApplicationFiled: November 20, 2017Publication date: May 24, 2018Applicant: MERCK PATENT GMBHInventors: Graziano ARCHETTI, Edward PLUMMER, Helmut HAENSEL, Rocco FORTTE, Timo UEBEL
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Publication number: 20180134960Abstract: The invention relates to a liquid-crystalline medium which comprises at least one compound of the formula I, in which R1 and R1* each, independently of one another, denote an alkyl or alkoxy radical having 1 to 15 C atoms, where, in addition, one or more CH2 groups in these radicals may each be replaced, independently of one another, by in such a way that O atoms are not linked directly to one another, and in which, in addition, one or more H atoms may be replaced by halogen, A1 denotes L1 denotes F, Cl, CF3, OCF3 or CHF2, 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: ApplicationFiled: April 8, 2016Publication date: May 17, 2018Applicant: MERCK PATENT GMBHInventors: Helmut HAENSEL, Andreas POHLE, Brigitte SCHULER, Christian JASPER
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Patent number: 9835890Abstract: The present invention relates to a liquid crystal (LC) display of the FFS type comprising a liquid crystal medium with negative dielectric anisotropy and a di- or multireactive polymerizable compound, and an alignment layer inducing planar alignment in the LC medium.Type: GrantFiled: January 20, 2015Date of Patent: December 5, 2017Assignee: MERCK PATENG GMBHInventors: Martin Engel, Helmut Haensel, Nico John
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Patent number: 9776952Abstract: The present invention relates to polymerizable compounds, to processes and intermediates for the preparation thereof, to the use thereof for optical, electro-optical and electronic purposes, in particular in liquid-crystal (LC) media and LC displays having a polymer-stabilized blue phase, and in LC media for LC displays of the PS or PSA type (“polymer sustained” or “polymer sustained alignment”), and to LC media and LC displays comprising these compounds.Type: GrantFiled: February 5, 2016Date of Patent: October 3, 2017Assignee: Merck Patent GmbHInventors: Axel Jansen, Thorsten Kodek, Helmut Haensel, Erdal Durmaz
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Patent number: 9612445Abstract: The invention provides a switchable lens element comprising an inverse lens structure formed by an isotropic material and an isotropic cover sheet wherein the resulting lens structure comprises an electrically switchable polymer stabilized blue phase LC medium having the same refractive index in its isotropic state. Furthermore, the present invention relates to the use of such a lens element in an electro-optical device i.e. an autostereoscopic display device operable in a 2D mode or a 3D mode, in which a lens arrangement directs the output from different pixels to different spatial positions to enable a stereoscopic image to be viewed and wherein the lens arrangement comprises a plurality of said switchable lens elements.Type: GrantFiled: October 29, 2013Date of Patent: April 4, 2017Assignee: Merck Patent GmbHInventors: Michael Wittek, Helmut Haensel
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Patent number: 9567285Abstract: The present invention relates to polymerizable compounds, to processes and intermediates for the preparation thereof, to the use thereof for optical, electro-optical and electronic purposes, in particular in liquid-crystal (LC) media and LC displays having a polymer-stabilized blue phase, and in LC media for LC displays of the PS or PSA type (“polymer sustained” or “polymer sustained alignment”), and to LC media and LC displays comprising these compounds.Type: GrantFiled: February 24, 2011Date of Patent: February 14, 2017Assignee: Merck Patent GmbHInventors: Axel Jansen, Thorsten Kodek, Helmut Haensel, Erdal Durmaz
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Publication number: 20160152546Abstract: The present invention relates to polymerisable compounds, to processes and intermediates for the preparation thereof, to the use thereof for optical, electro-optical and electronic purposes, in particular in liquid-crystal (LC) media and LC displays having a polymer-stabilised blue phase, and in LC media for LC displays of the PS or PSA type (“polymer sustained” or “polymer sustained alignment”), and to LC media and LC displays comprising these compounds.Type: ApplicationFiled: February 5, 2016Publication date: June 2, 2016Applicant: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNGInventors: Axel JANSEN, Thorsten KODEK, Helmut HAENSEL, Erdal DURMAZ
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Patent number: 9347000Abstract: The present invention relates to polymerisable compounds, to processes and intermediates for the preparation thereof, to the use thereof for optical, electro-optical and electronic purposes, in particular in liquid-crystal (LC) media and LC displays having a polymer-stabilised blue phase, and in LC media for LC displays of the PS or PSA (“polymer sustained” or “polymer sustained alignment”) type, and to LC media and LC displays comprising these compounds.Type: GrantFiled: August 26, 2014Date of Patent: May 24, 2016Assignee: Merck Patent GmbHInventors: Axel Jansen, Andreas Taugerbeck, Helmut Haensel, Achim Goetz
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Patent number: 9255223Abstract: The invention relates to 1,1-disubstituted cyclohexane derivatives containing one or more polymerizable groups, and to liquid-crystalline media comprising at least one compound of the formula I. At least one of the polymerizable groups is located at the geminally substituted position of the cyclohexane ring. The compounds are suitable for the stabilization of liquid-crystalline phases. Examples of polymer-stabilized blue phases are indicated.Type: GrantFiled: December 23, 2010Date of Patent: February 9, 2016Assignee: Merck Patent GmbHInventors: Axel Jansen, Thorsten Kodek, Helmut Haensel, Erdal Durmaz
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Patent number: 9217109Abstract: The present invention relates to liquid-crystalline media and display devices comprising polymerizable compounds, to the use of the polymerizable compounds for optical, electro-optical and electronic purposes, in particular in liquid-crystal (LC) media and LC displays having a polymer-stabilized blue phase, and in LC media for LC displays of the PS or PSA (“polymer sustained” or “polymer sustained alignment”) type. The polymerizable compounds comprise a ring system which is functionalized by three or more polymerizable groups, each connected via an optional spacer group.Type: GrantFiled: June 29, 2011Date of Patent: December 22, 2015Assignee: MERCK PATENT GmbHInventors: Axel Jansen, Thorsten Kodek, Helmut Haensel, Erdal Durmaz, Julia Sprang
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Publication number: 20150301344Abstract: The invention provides a switchable lens element comprising an inverse lens structure formed by an isotropic material and an isotropic cover sheet wherein the resulting lens structure comprises an electrically switchable polymer stabilized blue phase LC medium having the same refractive index in its isotropic state. Furthermore, the present invention relates to the use of such a lens element in an electro-optical device i.e. an autostereoscopic display device operable in a 2D mode or a 3D mode, in which a lens arrangement directs the output from different pixels to different spatial positions to enable a stereoscopic image to be viewed and wherein the lens arrangement comprises a plurality of said switchable lens elements.Type: ApplicationFiled: October 29, 2013Publication date: October 22, 2015Applicant: MERCK PATENT GMBHInventors: Michael WITTEK, Helmut HAENSEL
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Publication number: 20150205158Abstract: The present invention relates to a liquid crystal (LC) display of the FFS type comprising a liquid crystal medium with negative dielectric anisotropy and a di- or multireactive polymerizable compound, and an alignment layer inducing planar alignment in the LC medium.Type: ApplicationFiled: January 20, 2015Publication date: July 23, 2015Applicant: Merck Patent GmbHInventors: Martin ENGEL, Helmut HAENSEL, Nico JOHN