Patent ID: 9183804
Filing Date: 2015-11-10
Classification: G02F,G09G

Abstract:
1. A display comprising: a first substrate; a second substrate spaced from the first substrate; an image display layer disposed between the first substrate and the second substrate and comprising an electro-optical material, the electro-optical material not being a ferro-electric electro-optical material; and a controller; wherein the display comprises a plurality of independently addressable pixels, a pixel of the plurality of pixels comprising: the controller, in a first mode, being adapted to, for a pixel of the display, apply a first voltage to the first electrode of the pixel, apply a second voltage different to the first voltage to the second electrode of the pixel and apply a third voltage to the other electrode of the pixel to define in the pixel at least one of a first region in which the electro-optical material is in an unswitched state, a second region in which the electro-optical material is in a fully switched state and a third region in which the electro-optical material is in a partially switched state, the first, second and third voltages being selected such that an area of the first region, second region and third region or each of the first region, second region and third region defined in the pixel produces a desired greyscale level for the pixel, wherein the first region of the pixel is maximally light-transmissive and the second region of the pixel is maximally light-absorbing, or the first region of the pixel is maximally light-absorbing and the second region of the pixel is maximally light-transmissive.