Patent ID: 8059239
Filing Date: 2011-11-15
Classification: G02F,G09G

Abstract:
1. A display for a portable electronic device, the display comprising: a liquid crystal layer adapted for presenting information on the display; an illumination system for regulating the amount of light supplied to the liquid crystal layer; wherein the display further comprises a reflective layer below the liquid crystal layer, wherein the reflectivity of the layer is electrically adjustable such that the amount of ambient light passing through the display and being reflected by the reflective layer is adjustable and; wherein the reflective layer further comprises mirrors, wherein the reflectivity of the display is electrically adjustable by controlling position of the mirrors via a first control signal such that the display is reflective for ambient light and transmissive for light from the illumination system at the same time, and wherein the reflective layer further comprises electrically controllable polarizing elements arranged in a first plane parallel with the liquid crystal layer and the illumination system.