Patent ID: 8730434
Filing Date: 2014-05-20
Classification: G02B,G02F

Abstract:
1. An optical compensation film, comprising: non-liquid crystal polymers arranged in a tilt alignment, wherein the optical compensation film satisfies the following expressions (1) and (2): where, when an X-axis and a Y-axis, which are plane direction axes of a three-dimensional coordinate system, are perpendicular to each other and an axis vertical to the X-axis and the Y-axis in a thickness direction is defined as a Z-axis, nx and ny indicate a maximum refractive index and a minimum refractive index in an XY-plane of the optical compensation film, respectively, d indicates a film thickness [nm], and β indicates an angle formed between a direction for providing the minimum refractive index ny and a direction for providing a maximum refractive index nb in a YZ-plane of the optical compensation film, and wherein the optical compensation film has a birefringence index An in a range of 0.0001 to 0.02 and the non-liquid crystal polymers comprise at least one polymer selected from the group consisting of a (meth)acrylic polymer, an olefin-based polymer, a cyclic olefin-based polymer, a polyacrylate-based polymer, a polycarbonate-based polymer, and a polyurethane-based polymer.