Patent ID: 6999234
Filing Date: 2006-02-14
Classification: C09K,G02B,Y10S

Abstract:
1. A polarizing element comprising a stretched sheet composed of a continuous phase and a dispersed phase dispersed in the form of a particle in the continuous phase, wherein the continuous phase comprises a first transparent resin and the dispersed phase comprises a second transparent resin, a refractive index differential between the continuous phase and the dispersed phase on a linear polarized light in a stretched direction of the sheet is different from that in a direction perpendicular to the stretched direction, incident light with a polarization state for which the refractive index differential is smaller is transmitted through the polarizing element, and incident light with a polarization state for which the refractive index differential is larger is scattered by the polarizing element, and the continuous phase and the dispersed phase are bonded each other substantially free from voids between the both phases, wherein a combination of the first transparent resin and the second transparent resin is at least one selected from the group consisting of the following combinations: a combination of the first transparent resin having a carboxyl group with the second transparent resin having at least one functional group selected from the group consisting of a hydroxyl group, an amino group and an epoxy group, a combination of the first transparent resin having a hydroxyl group with the second transparent resin having at least one functional group selected from the group consisting of a carboxyl group, an acid anhydride group and an isocyanate group, and a combination of the first transparent resin having an amino group with the second transparent resin having at least one functional group selected from the group consisting of a carboxyl group, an acid anhydride group and an epoxy group.