The Secretary of State for Defence in Her Britannic Majesty's Government

The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland Defence Evaluation Research Agency

The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britian and Northern Ireland of Defence Evaluation and Research Agency

The Secretary of State for in Defence in Her Brittanic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland

The Secretary of State for Defence in Her Majesty'3 S Government of the

Amarjit Kaur Samra

Damien Gerard McDonnell

John William Goodby

Michael Hird

Maurice Stanley

Andrew John Slaney

Victoria Minter

Chu Chuan Dong

Simon John Cross

Kenneth J Toyne

George W Gray

Edward P Raynes

David Lacey

Adam Jackson

Lawrence Kam Chan

Richard M Scrowston

Madeline J Bradshaw

Jennifer Constant

Victoria Brimmell

Ibrahim G Shenouda

Alexander J Seed

An electroclinic device having two spaced cell walls each bearing electrode structures and treated on at least one facing surface with an alignment layer, a layer of a smectic liquid crystal material enclosed between the cell walls, where the liquid crystal material contains one or more of the compounds described by formula I as defined in the specification.

Liquid crystal compounds, mixtures and devices

An electoclinic device having two spaced cell walls each bearing electrode structures and treated on at least one facing surface with an alignment layer, a layer of a smectic liquid crystal material enclosed between the cell walls, where the liquid crystal material contains one or more of the compounds described by formula I as defined in the specification.

Liquid crystal mixtures and devices

Thio-ester compounds and mixtures and devices containing such compounds

Optically active compounds of formula (I), where X has a structure (II) and B is C.sub.1-12 alkyl, a chiral group or a group having a general structure (III), where R and R' are H, C.sub.1-12 alkyl, alkoxy, alkylcarbonyloxy, or alkoxycarbonyl, each ring (IV) and (V) is the same or different, A and D are single bonds or bridging groups, each a and d is 0 or 1; Z, Z' are CN, Cl, F, Br or CF.sub.3 ; provided when Z is CN or Cl, then when B is alkyl X-Y is not (VI) or (VII). Ferroelectric smectic liquid crystal mixtures containing these compounds are also described. ##STR1##

Chiral liquid crystal compounds

This invention relates to novel chiral cyano-containing compounds suitable for use in ferroelectric smectic liquid crystal mixtures.

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Malvern, United Kingdom

Amarjit Kaur Samra