Merck Patent Gesellschaft MIT Beschrankter Haftung

Other

Merck Patent Gmbh

Merck Patent Gesellschaft MIT

Akiko Takashima

Hideo Ichinose

Shinji Nakajima

Brigitte Schuler

Kazuaki Tarumi

Yasuyoshi Namiki

Michael Schwarz

Hiroshi Numata

Yasushi Sugiyama

Volker Reiffenrath

Makoto Kanbe

Yoshito Hashimoto

Masako Nakamura

Yuka Ikedo

The invention relates to a liquid-crystalline medium based on a mixture of polar compounds having positive dielectric anisotropy, characterized in that it comprises one or more compounds of general formula (I) and one or more compounds of general formula (I*) in which R, R , R , A , Z , Y, L, L , L , m, x and y are as defined in claim 1.

Liquid-crystalline medium

Electro-optical liquid-crystal display

The invention relates to dielectrically positive nematic liquid crystal compositions for active matrix displays with high voltage holding ratio and very low birefringence. The composition of the mixtures is given in claim The compositions are particularly suited for reflective displays. The invention further relates to particular reflective displays with low optical retardation.

Nematic liquid crystal composition for active matrix application and reflective liquid crystal displays

Liquid crystalline medium

The invention relates to a liquid-crystalline medium based on a mixture of polar compounds having negative dielectric anisotropy, which contains at least one compound of formula I ##STR1## and at least one compound of formula II ##STR2## wherein R.sup.1 is alkyl or alkoxy with 1 to 8 C atoms or alkenyl with 2 to 7 C atoms,

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Aiko-gun, Japan

Akiko Takashima