Patent ID: 7626661
Filing Date: 2009-12-01
Classification: G02B,G02F

Abstract:
1. A liquid crystal (LC) display assembly for reducing back-reflection polarization conversion comprising: an LC display panel having residual birefringence in a dark state due to the orientation of liquid crystal molecules therein; and a polarization compensating element for at least partially compensating for the residual birefringence including: wherein an in-plane fast axis orientation of the first LCP layer is substantially azimuthally aligned at an angle between 0° and 90° relative to an in-plane slow axis of the LC display panel; and wherein the LCP layer has a relatively low in-plane ΔN birefringence value between 0.0001 and 0.14 in the blue portion of the visible spectrum and between 0.0001 and 0.104 in the red portion of the visible spectrum.