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Inventor: Heckmeier; Michael
Address: Hemsbach, DE
No. of patents: 37
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 7612243 |
Cyclopenta[b]naphthalene derivatives |
November 3, 2009 |
| The present invention relates to cyclopenta[b]naphthalene derivatives to the use thereof in liquid-crystalline or mesogenic media, to liquid-crystalline or mesogenic media comprising at least one of these cyclopenta[b]naphthalene derivatives, and to electro-optical display elements c |
| 7553522 |
LC-mixtures with low frequency dependence for TFT-displays |
June 30, 2009 |
| The present invention relates to dielectrically positive, nematic liquid crystalline media having a small frequency dependence of the dielectric anisotropy. The media are particularly well suited for application in active matrix displays. The present invention relates to the use of the |
| 7531106 |
Mesogenic compounds, medium for electro-optical displays and electro-optical display |
May 12, 2009 |
| The instant invention relates to liquid crystal media comprising a strongly dielectrically positive component A, comprising one or more compounds of formula I ##STR00001## wherein the parameters have the meanings given in the text. It also relates to the compounds as such and to mes |
| 7462297 |
Chiral dopants having a laterally alkylated phenyl structural element |
December 9, 2008 |
| The present invention relates to chiral dopants having a laterally alkylated phenyl unit of the general formula I: ##STR00001## in which Q*, R, A, Z, V, W, X, Y and n are as defined in claim 1, to the use thereof as components in liquid-crystalline mixtures, and to liquid-crystal an |
| 7449222 |
Liquid-crystalline medium |
November 11, 2008 |
| The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, comprising at least one pyran compound of the formula I ##STR00001## and one or more compounds selected from the group consisting of the compounds C1 to C9 # |
| 7442475 |
Cyanopyridone derivatives as liquid crystals |
October 28, 2008 |
| The invention relates to cyanopyridone derivatives, to their use in liquid crystal media, liquid crystal devices, anisotropic polymers, optical, electrooptical, decorative, security, cosmetic, diagnostic, pharmaceutic, electric, electronic, charge transport, semiconductor, optical record |
| 7440160 |
Electro-optical light modulating element, electro-optical display and modulating medium |
October 21, 2008 |
| The invention relates to electrooptical light modulating elements, to electrooptical displays containing elements of this type, and to display systems, e.g. television screens and computer monitors, and to the modulating media used therein. The inventive light modulating elements con |
| 7425356 |
Chiral compounds |
September 16, 2008 |
| The invention relates to chiral compounds of formula I wherein X.sup.1, X.sup.2, X.sup.1, X.sup.2, x.sup.1, x.sup.2, y.sup.1, y.sup.2, B, C, U.sup.1, U.sup.2, V.sup.1, V.sup.2, W.sup.1 and W.sup.2 have the meaning given in claim 1, to liquid crystal mixtures comprising at least one c |
| 7419706 |
Liquid crystalline medium |
September 2, 2008 |
| The present invention relates to a liquid crystalline mixture comprising a) 1-25% by weight of at least one compound of the formula I ##STR00001## b) 5-80% by weight of at least one compound of the formula II ##STR00002## c) and optionally 1-20% by weight of at least one chiral com |
| 7419705 |
Liquid-crystalline medium |
September 2, 2008 |
| The invention relates to a liquid-crystalline medium based on a mixture of polar compounds, characterized in that it comprises one or more compounds of the formula I ##STR00001## in which R.sup.1, L.sup.1 and L.sup.2 are as defined in claim 1, and to the use thereof for electro-optical |
| 7390538 |
Liquid-crystal medium containing monofluoroterphenyl compounds |
June 24, 2008 |
| The present invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive or negative dielectric anisotropy which is characterised in that it comprises one or more compounds of the general formula I ##STR00001## in which R.sup.1 and R.sup.2 are each, |
| 7344761 |
Liquid-crystalline compounds |
March 18, 2008 |
| The invention relates to liquid-crystalline compounds of the formula (I), where R.sup.11, X.sup.11, L.sup.11, Y and W are as defined in claim 1, and to the use thereof in liquid-crystalline media, to liquid-crystalline media comprising at least one compound of the formula (I) and to |
| 7314943 |
Pyran derivatives containing an exocyclic double bond |
January 1, 2008 |
| The invention relates to pyran derivatives of formula I ##STR00001## and processes and intermediates for their preparation and derivatisation, and the use thereof in liquid-crystalline media. |
| 7291367 |
Liquid-crystalline compounds |
November 6, 2007 |
| The invention relates to liquid-crystalline compounds of the formula (I) in which R.sup.1, R.sup.2, A.sup.1, A.sup.2, A.sup.3, A.sup.4, Z.sup.1, Z.sup.2, Z.sup.3, a, b and c have the meanings indicated in Claim 1, and to liquid-crystalline media comprising at least one compound of the (I |
| 7291366 |
Cyclopenta[b]naphthalene derivatives |
November 6, 2007 |
| The present invention relates to cyclopenta[b]naphthalene derivatives of the general formula (I) in which Z, A, n, R, L.sup.5 and L.sup.8 as (II) and (III) are as defined in Claim 1, to the use thereof in liquid-crystalline or mesogenic media, to liquid-crystalline or mesogenic media |
| 7270856 |
Cyclobutane derivatives |
September 18, 2007 |
| The invention relates to novel cyclobutane derivatives of the formula (I), in which R.sup.1, R.sup.2, A, Z, m, n and o have the meaning indicated in claim 1, to the use thereof as components of liquid-crystalline media, and to liquid-crystal and electro-optical display elements which con |
| 7223450 |
Chiral compounds |
May 29, 2007 |
| The invention relates to chiral compounds of formula I wherein X.sup.1,X.sup.2,X.sup.1,X.sup.2,x.sup.1,x.sup.2,y.sup.1,y.sup.2,B,C,U.sup- .1,U.sup.2,V.sup.1,V.sup.2,W.sup.1 and W.sup.2 have the meaning given in claim 1, to liquid crystal mixtures comprising at least one chiral compoun |
| 7211302 |
Photostable liquid crystalline medium |
May 1, 2007 |
| The invention relates to a photostable liquid-crystalline medium comprising at least one compound of the formula I ##STR00001## and at least one compound of the formula II ##STR00002## and to the use thereof for electro-optical purposes, and to displays containing this medi |
| 7201951 |
Liquid-crystalline medium |
April 10, 2007 |
| Described are media for liquid-crystal applications where the media include a mixture of polar compounds of positive dielectric anisotropy. The mixtures include one or more compounds of the formula I ##STR00001## in which: R.sup.1 is a halogenated or unsubstituted alkyl or alkoxy rad |
| 7189440 |
Liquid-crystalline medium |
March 13, 2007 |
| The invention relates to a liquid-crystalline medium comprising at least one pyran compound of the formula I ##STR00001## and one or more compounds selected from the group consisting of the compounds C-1 to C-5 ##STR00002## in which the R, R.sup.1, the rings A, B and P, L.sup.1-6, |
| 7175891 |
Liquid-crystalline medium |
February 13, 2007 |
| The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it comprises one or more compounds of the formula I ##STR00001## and one or more compounds of the formula IA ##STR00002## in which R.sup.1 |
| 7153550 |
Liquid crystalline medium and liquid crystal display |
December 26, 2006 |
| The instant invention relates to liquid crystalline media comprising a dielectrically positive component, component A, consisting of dielectrically positive compounds, comprising one or more compounds of formula I and one or more compounds of formula II ##STR00001## wherein the para |
| 7135210 |
Liquid crystal compounds |
November 14, 2006 |
| The invention relates to liquid crystal compounds of formula (I), where X.sup.1, X.sup.2, X.sup.3, Z.sup.1, Z.sup.2, L.sup.1, L.sup.2, L.sup.3, L.sup.4, L.sup.5, L.sup.6, L.sup.7, L.sup.8, L.sup.9, L.sup.10, L.sup.11 and a have the meanings given in claim 1, and liquid crystal media |
| 7105210 |
Liquid-crystalline medium |
September 12, 2006 |
| A liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, which contains one or more compounds of the formula I ##STR00001## and one or more compounds of the formula IA ##STR00002## in which R.sup.1, R.sup.2, ring A, L.sup.1-8, Z.sup.1, X. |
| 7105209 |
Homeotropic alignment layer |
September 12, 2006 |
| The invention relates to an alignment layer comprising a polymerized liquid crystal material with homeotrophic orientation, to methods of its preparation, to polymerizable liquid crystal compositions and liquid crystal polymers used for the preparation of the alignment layer, to liqu |
| 7078079 |
Liquid-crystalline medium |
July 18, 2006 |
| The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterised in that it comprises one or more compounds of the general formula I ##STR00001## in which R.sup.1, ##STR00002## L.sup.1, L.sup.2, L.sup.3, L.sup.4, |
| 7056561 |
Liquid-crystalline medium |
June 6, 2006 |
| The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterised in that it comprises one or more ester compounds of the formula I ##STR00001## and one or more compounds of the formula IA ##STR00002## in which |
| 7033652 |
Liquid-crystalline medium |
April 25, 2006 |
| Liquid-crystalline media comprising at least one compound of the formula I ##STR00001## in which X, L.sup.1, L.sup.2 and L.sub.3 are as defined herein, are useful for use in electro-optical displays. |
| 7022865 |
Pyrans as liquid crystals |
April 4, 2006 |
| A tetrahydropyran derivative comprising at least three cyclic rings and one aromatic endgroup of the formula A ##STR00001## a process for preparing said tetrahydropyran derivatives, and the use of said tetrahydropyran derivatives as a component in a liquid crystal composition. |
| 6974607 |
Pyrans as liquid crystals |
December 13, 2005 |
| Tetrahydropyran derivatives having at least one ester group (--CO--O--) and at least one group --CN, --NCS, ##STR1##--F, --Cl, --OCHF.sub.2, --OCF.sub.3, --CF.sub.3, --OCHFCF.sub.3, --OCF.sub.2 CHFCF.sub.3, SF.sub.5, or --OCF.sub.2 CF.sub.3 ; a process for preparing said tetrahydropy |
| 6964794 |
Liquid-crystalline medium |
November 15, 2005 |
| The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it comprises one or more compounds of the formula I ##STR1##in which R.sup.1, L.sup.1 and L.sup.2 are as defined in claim 1. |
| 6962733 |
Liquid-crystalline medium |
November 8, 2005 |
| The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it comprises one or more compounds of the formula I ##STR1##in which R.sup.1, L.sup.1 and L.sup.2 are as defined in claim 1. |
| 6908645 |
Liquid-crystalline medium |
June 21, 2005 |
| The invention relates to liquid-crystalline compounds of the formula I and to a liquid-crystalline medium based on a mixture of polar compounds, characterized in that it comprises one or more compounds of the general formula I ##STR1##in which R.sup.1, ##STR2##L.sup.1, L.sup.2, L |
| 6890607 |
Liquid-crystalline medium |
May 10, 2005 |
| A liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, which contains one or more compounds of the formula I ##STR1##in which R.sup.1 is a halogenated or unsubstituted alkyl or alkoxy radical having from 1 to 15 carbon atoms, where one |
| 6827990 |
Liquid-crystalline medium |
December 7, 2004 |
| The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it comprises one or more compounds of the formula I ##STR1##in which R.sup.1, L.sup.1 and L.sup.2 are as defined in claim 1. |
| 6808764 |
Liquid-crystalline medium having a high birefringence and improved UV stability |
October 26, 2004 |
| A liquid-crystalline medium comprises the compound of the formula (I): ##STR1##generally in amounts from 1 to 30% by weight, preferably from 2 to 20% by weight, particularly preferably from 3 to 10% by weight, and further liquid-crystalline compounds. |
| 6780477 |
Liquid crystalline compounds |
August 24, 2004 |
| The invention relates to liquid-crystalline compounds of the formula I ##STR1##in which R.sup.1, R.sup.2, A.sup.1, A.sup.2, A.sup.3, A.sup.4, Z.sup.1, Z.sup.2, a, b and c are as defined in claim 1, and to liquid-crystalline media comprising at least compound of the formula I and to el |
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