C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 25/22 (2006.01) C07C 25/24 (2006.01) C07C 255/50 (2006.01) C07D 213/30 (2006.01) C07D 213/50 (2006.01) C07D 213/79 (2006.01) C09K 19/32 (2006.01) C09K 19/34 (2006.01) G02F 1/13 (2006.01)
Patent
CA 2377217
A tetrahydronaphthalene derivative represented by the general formula (I) and a liquid crystal composition containing the same. (see formula I) A compound represented by the general formula (I) shows superior liquid crystallinity and co--solubility with conventional liquid crystal compounds and compositions. Furthermore, addition of such a compound enables the threshold voltage to be significantly reduced with almost no deleterious effect on the responsiveness. In addition, a compound of the present invention can also be easily produced industrially, is colorless, and is chemically stable. Consequently, liquid crystal compositions containing such a compound are extremely useful as liquid crystals, and are particularly suitable for liquid crystal displays requiring a wide operating temperature range, low voltage driving and a high response speed.
L'invention concerne un dérivé de tétrahydronaphtalène représenté par la formule générale (I), ainsi qu'une composition de cristaux liquides contenant ce dérivé. Le composé de formule générale (I) possède non seulement d'excellentes propriétés en tant que cristal liquide, mais également une excellente compatibilité avec un composé ou une composition de cristaux liquides. L'ajout du composé de l'invention au composé ou composition de cristaux liquides permet la réduction sensible d'une valeur de seuil de tension, sans nuire sensiblement aux caractéristiques de transfert. Le composé de l'invention, qui est incolore et chimiquement stable, peut être produit commercialement avec facilité. L'invention concerne également une composition de cristaux liquides contenant ledit composé qui constitue un cristal liquide extrêmement utile pour un affichage à cristaux liquides nécessitant un large gamme de températures d'emploi, un fonctionnement avec une faible tension et une réaction rapide.
Frings Rainer Bruno
Grahe Gerwald
Kusumoto Tetsuo
Nagashima Yutaka
Negishi Makoto
Dainippon Ink And Chemicals Inc.
Sim & Mcburney
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