Patent ID: 8035774
Filing Date: 2011-10-11
Classification: G02B,G02F

Abstract:
1. A multilayer reflective polarizer plate that substantially reflects at least normally incident light of a block polarization state over the visible spectrum, comprising: a stack of light transmissive polymer layers comprising at least a first and second alternating polymer material, the polymer layers contributing substantially to the reflectivity of the reflective polarizer, the first and second materials having refractive indices along orthogonal in-plane axes that define a pass axis and a block axis for the polarizer plate; wherein the polymer layers of the stack have an average optical thickness of at least about (5/4)λ wherein the polarizer plate is adapted for use in a liquid crystal display device; wherein the polymer layers of the stack are sufficiently thick to provide the polarizer plate with a mechanical stiffness adequate to prevent sagging, warping, or buckling over a viewable area of the display when the polarizer plate is edge-mounted in the display; and wherein the polarizer plate also scatters light, the polarizer plate being adapted to scatter reflected light of the block polarization state more or less than transmitted light of a pass polarization state orthogonal to the block polarization state.