Qinetiq Limited

Ryan Michael Heath

Robert William Bannister

John William Goodby

Alan W Hall

Keith M Blackwood

Rachel P Tuffin

Paul E Y Milne

Andrew G Biggs

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

The use of a compound of formula (A), which comprises a group of sub-formula (I) where R, R, R, R, R, R, Xand Yare various specified organic groups wherein at least one of said groups has sufficient electron whitdrawing properties to activate the multiple bonds to polymerisation, in a stereolithographic composition. Stereolithographic applications of these compounds are also described and claimed.

Use of a composition in stereolithography

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Worsc, United Kingdom

Ryan Michael Heath