Back to results
US 5,182,663 AGranted
Liquid crystal display having improved retroreflector
AssigneeRaychem Corporation
InventorPhilip J. Jones
Life of this patent
Estimating the term…
Abstract
A reflective liquid crystal display includes a retroreflector made of an array of full corner cube elements which have their optic axes tilted away from the normal to the plane of the display by an angle of between about 10.degree. and about 45.degree..
Claims20
A liquid crystal display comprising (a) a first transparent electrode means;
- (b) a second transparent electrode means;
- (c) a display medium positioned between the first and second transparent electrode means, which display medium is switchable between a first state in which incident light is scattered and a second state in which the amount of such scattering is reduced;
- and (d) a retroreflector positioned behind the second transparent electrode means, which retroreflector comprises an array of full corner cube elements and has an optic axis tilted towards the top of the display by an angle of between about 10.degree. and about 45.degree..
Dependencies are inferred from the claim text.