Components for high-frequency technology, and liquid-crystalline media

Patent metadata

Field	Value
Publication number	US-9790426-B2
Application number	US-201013497806-A
Country	US
Kind code	B2
Filing date	Sep 14, 2010
Priority date	Sep 25, 2009
Publication date	Oct 17, 2017
Grant date	Oct 17, 2017

Abstract

A component for high-frequency technology or for the microwave range and millimeter wave range of the electromagnetic spectrum. The component contains a liquid-crystal compound of the formula I

in which the parameters have the respective meanings given in the claims or in the text, or a liquid-crystal medium which itself comprises one or more compounds of this formula I. Also, the corresponding, novel liquid-crystal media, the use and preparation thereof, and the production and use of the components. The components are particularly suitable as phase shifters in the microwave and millimeter wave range, for microwave and millimeter wave array antennae and very particularly for so-called tuneable reflectarrays.

First claim

The invention claimed is:

1. Component which operates in the microwave range or millimeter wave range of the electromagnetic spectrum, wherein the component is selected from the group consisting of the following components: wireless and radiowave antenna arrays; microwave antenna arrays; and devices selected from the group consisting of the following devices: phase shifters; varactors; and matching circuit adaptive filters; and wherein the component comprises a liquid-crystal medium, wherein the medium comprises two or more compounds of the formula I, wherein the concentration of all of the compounds of formula I is 30 to 95% by weight, based on the total weight of the medium,

in which
R 11 and R 12 , independently of one another, denote unfluorinated alkyl having 1 to 15 C atoms, or unfluorinated alkenyl having 2 to 15 C atoms,
R 13 denotes ethyl or cycloalkyl having 3 to 6 carbon atoms,
provided that:
the liquid-crystal medium contains one or more compounds of the formula I-2

and contains one or more compounds of the formula I-3

wherein A 1 denotes cycloalkyl having 3 to 6 C atoms; and
wherein the liquid-crystal medium additionally comprises one or more components selected from the group of the following components, components B and D to E,
a strongly dielectrically positive component, component B, which has a dielectric anisotropy of 10 or more,
a component, component D, which has a dielectric anisotropy in the range from more than −5.0 to less than 10.0 and comprises one or more compounds of the following formula IV:

in which
R 41 and R 42 , independently of one another, denote unfluorinated alkyl or unfluorinated alkoxy, each having 1 to 15 C atoms, or unfluorinated alkenyl, unfluorinated alkenyloxy or unfluorinated alkoxyalkyl, each having 2 to 15 C atoms, or cycloalkyl, alkylcycloalkyl, cycloalkenyl, alkylcycloalkenyl, alkylcycloalkylalkyl or alkylcycloalkenylalkyl, each having up to 15 C atoms,
L 41 to L 44 on each appearance, in each case independently of one another, denote H, alkyl having 1 to 5 C atoms, F or Cl, provided that at least two of the substituents L 41 to L 44 are not H, and
P denotes an integer in the range from 7 to 14;

and
a component, component E, which has a dielectric anisotropy in the range from more than −5.0 to less than 10.0 and comprises one or more compounds of the formulae V to IX:

in which
L 51 denotes R 51 or X 51 ,
L 52 denotes R 52 or X 52 ,
R 51 and R 52 , independently of one another, denote H, unfluorinated alkyl or unfluorinated alkoxy having 1 to 17 C atoms or unfluorinated alkenyl, unfluorinated alkenyloxy or unfluorinated alkoxyalkyl having 2 to 15 C atoms,
X 51 and X 52 , independently of one another, denote H, F, Cl, —CN, —NCS, —SF 5 , fluorinated alkyl or fluorinated alkoxy having 1 to 7 C atoms or fluorinated alkenyl, unfluorinated or fluorinated alkenyloxy or unfluorinated or fluorinated alkoxyalkyl having 2 to 7 C atoms, and

 independently of one another, denote

L 61 denotes R 21 and, in the case where Z 61 and/or Z 62 denote trans-CH═CH— or trans-CF═CF—, alternatively denotes X 21 ,
L 62 denotes R 62 and, in the case where Z 61 and/or Z 62 denote trans-CH═CH— or trans-CF═CF—, alternatively denotes X 62 ,
R 61 and R 62 , independently of one another, denote H, unfluorinated alkyl or unfluorinated alkoxy having 1 to 17 C atoms or unfluorinated alkenyl, unfluorinated alkenyloxy or unfluorinated alkoxyalkyl having 2 to 15 C atoms,
X 61 and X 62 , independently of one another, denote F or Cl, —CN, —NCS, —SF 5 , fluorinated alkyl or alkoxy having 1 to 7 C atoms or fluorinated alkenyl, alkenyloxy or alkoxyalkyl having 2 to 7 C atoms,
one of
Z 61 and Z 62 denotes trans-CH═CH—, trans-CF═CF— or —C≡C— and the other, independently thereof, denotes trans-CH═CH—, trans-CF═CF— or a single bond, and

 independently of one another, denote

L 71 denotes R 71 or X 71 ,
L 72 denotes R 72 or X 72 ,
R 71 and R 72 , independently of one another, denote H, unfluorinated alkyl or unfluorinated alkoxy having 1 to 17 C atoms or unfluorinated alkenyl, unfluorinated alkenyloxy or unfluorinated alkoxyalkyl having 2 to 15 C atoms,
X 71 and X 72 , independently of one another, denote H, F, Cl, —CN, —NCS, —SF 5 , fluorinated alkyl or fluorinated alkoxy having 1 to 7 C atoms or fluorinated alkenyl, unfluorinated or fluorinated alkenyloxy or unfluorinated or fluorinated alkoxyalkyl having 2 to 7 C atoms, and
Z 71 to Z 73 , independently of one another, denote trans-CH═CH—, trans-CF═CF—, —C≡C— or a single bond, and

 independently of one another, denote

R 81 and R 82 , independently of one another, denote H, unfluorinated alkyl or alkoxy having 1 to 15 C atoms or unfluorinated alkenyl, alkenyloxy or alkoxyalkyl having 2 to 15 C atoms,
one of Z 81 and Z 82 denotes trans-CH═CH—, trans-CF═CF— or —C≡C— and the other, independently thereof, denotes trans-CH═CH—, trans-CF═CF— or a single bond, and

 independently of one another, denote

L 91 denotes R 91 or X 91 ,
L 92 denotes R 92 or X 92 ,
R 91 and R 92 , independently of one another, denote H, unfluorinated alkyl or alkoxy having 1 to 15 C atoms or unfluorinated alkenyl, alkenyloxy or alkoxyalkyl having 2 to 15 C atoms,
X 91 and X 92 , independently of one another, denote H, F, Cl, —CN, —NCS, —SF 5 , fluorinated alkyl or fluorinated alkoxy having 1 to 7 C atoms or fluorinated alkenyl, unfluorinated or fluorinated alkenyloxy or unfluorinated or fluorinated alkoxyalkyl having 2 to 7 C atoms, and
Z 91 to Z 93 , independently of one another, denote trans-CH═CH—, trans-CF═CF—, —C≡C— or a single bond,

 independently of one another, denote

and where compounds of the formula IIIA

where R 31 and R 32 denote unfluorinated alkyl or unfluorinated alkoxy, each having 1 to 15 C atoms, or unfluorinated alkenyl, unfluorinated alkenyloxy

Assignees

• Manabe Atsutaka
• Goebel Mark
• Klass Dagmar
• Montenegro Elvira
• Pauluth Detlef
• Merck Patent Gmbh

Inventors

• Manabe Atsutaka
• Goebel Mark
• Klass Dagmar
• Montenegro Elvira
• Pauluth Detlef

Classifications

• C09K2019/188

  Ph-C≡C-Ph-C≡C-Ph · CPC title

• G02F1/292

  by controlled diffraction or phased-array beam steering (controlled diffraction for optical switching G02F1/31) · CPC title

• C09K19/18 Primary

  the chain containing carbon-to-carbon triple bonds, e.g. tolans · CPC title

• C09K2219/11

  used in the High Frequency technical field · CPC title

• C09K19/30

  containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings · CPC title