Patent ID: 8174647

Claim:
A display comprising: a plurality of normally dark pixel circuits each comprising: a first electrode; a second electrode; a reflective region to reflect ambient light, the reflective region comprising a first portion of a liquid crystal layer between the first and second electrodes, and a polarization dependent reflector that transmits light having a first polarization and reflects light having a second polarization; a transmissive region to transmit backlight, the transmissive region comprising a second portion of the liquid crystal layer between the first and second electrodes; a dielectric layer between the first and second electrodes in the transmissive region, the dielectric layer configured such that when a pixel voltage is applied to the first and second electrodes, the percentage of the pixel voltage applied across the first portion of the liquid crystal layer is higher than the percentage of the pixel voltage applied across the second portion of the liquid crystal layer; and a backlight module to generate the backlight wherein the dielectric layer and the polarization dependent reflector face the same side of the liquid crystal layer.