Hewlett-packard Development Company, L.p.

Christopher Newton

Stephen Christopher Kitson

Adrian Derek Geisow

Mario Ariosto Matranga

Timothy Simon Taphouse

Daniel M Younger

A reflective display device includes a pixel structure () and a liquid crystal () containing a dye. The pixel structure () provides the liquid crystal () with a first tilt state and a second tilt state that are stable absent application of an electric field. In the first tilt state, the liquid crystal () is in an untwisted configuration. In the second tilt state, the liquid crystal () is in a twisted configuration, and the dye has an effective absorption that is higher than an effective absorption of the dye when the liquid crystal () is in the first tilt state.

Liquid crystal display device

A birefringent diffuser includes a first optical material and a first birefringent material. The first optical material and the first birefringent material are combined to form a planar layer. The planar layer has an internal pattern of the materials presenting a substantially uniform index of refraction for incident light which is substantially normal to the planar layer and exhibiting a varying index of refraction for at least a portion of light which is trapped in guided modes.

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Weston Super Mare, United Kingdom

Christopher Newton