Polarizing plate, image display apparatus, and method for improving bright-place contrast in image display apparatus

摘要

There is provided a polarizing plate including: a polarizer; and a light transmissive film with a birefringent property in a plane, disposed on one surface of the polarizer, wherein the light transmissive film satisfies a relationship of the following expression (1):n_xNn_y  (1)where a refractive index in a slow-axis direction which is a direction with a greatest refractive index in a plane of the light transmissive film is n_x, a refractive index in a fast-axis direction which is a direction orthogonal to the slow-axis direction in the plane is n_y, and an average refractive index of the light transmissive film is N; and wherein the polarizer and the light transmissive film are placed so that both fast-axis direction of the light transmissive film and absorption-axis direction of the polarizer are along a horizontal direction.