Patent ID: 7400377

Claim:
A display comprising: a polarisation modulating layer having a plurality of controllable pixels; a first polariser disposed at a side of a display surface of the polarisation modulating layer; a source of light disposed at a side of a back of the polarisation modulating layer; and a polarisation modifying layer disposed between the source and the first polariser and spaced from the polarisation modulating layer, wherein: the polarisation modifying layer has at least a first region and a second region, the polarisation modulating layer includes a single pixel or a plurality of pixels and has a first pixel associated with the first region and a second pixel associated with the second region, in each of a first set including the first pixel and the first region and a second set including the second pixel and the second region, each region of the polarisation modulating layer has a same polarisation modifying effect, and between different sets, such as a set including the first pixel and the second region or a set including the second pixel and the first region, each region of the polarisation modulating layer has a different polarisation modifying effect.