Qinetiq Limited

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

Rachel P Tuffin

John William Goodby

Kenneth J Toyne

Michael Hird

Warren L Duffy

Neil L Campbell

Georg H Mehl

Steven M Kelly

Robert William Bannister

Ryan Michael Heath

Stephane Trombotto

Janine H Wild

Liquid crystal compounds of Formula (I) for use in liquid crystal devices contains a dioxatetralin unit within the mesogenic liquid crystal core. The dioxatetralin unit may be located at any position within the mesogenic core of the liquid crystal compound, either at the terminus of the liquid crystal core or alternatively substantially in the middle of the liquid crystal core. The compounds of the invention exhibit fast switching and may be used in liquid crystal mixtures for particular use in imaging or display media, such as monitors or televisions.

Compounds for use in liquid crystal devices

In a liquid crystal reflecting device comprising a cell () formed by two cell walls () spaced apart by spacers () to contain a layer () of a liquid crystal material, electrode structures () on the inner faces of the walls, and a surface alignment on one or both walls to align the liquid crystal material, a diffuse specular reflector is provided by a mirror base layer () formed by at least two different materials that are at least partly immiscible relative to one another forming a rough surface onto which a reflective layer () is coated. The mirror base layer () is formed by at least two different polymer and/or monomer materials that are at least partly immiscible relative to one another. The reflector layer () may be a single sheet, formed into a plurality of separate reflector elements, or patterned into electrodes.

Liquid crystal reflective displays

Liquid crystalline alkenyl compounds incorporating an heterocyclic five-membered ring

Liquid crystal macrocycles

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Worcester, United Kingdom

Rachel P Tuffin