Patent ID: 8338823
Filing Date: 2012-12-25
Classification: G02B,H01L

Abstract:
1. A polarizer for organic light emitting diodes (OLED) having improved brightness, which comprises a linear polarizer, a ¼ retardation plate, a reflective polarizer film disposed between the linear polarizer and the ¼ retardation plate and transmitting a horizontally polarized light to the transmission axis of the linear polarizer while reflecting a vertically polarized light vertical to the transmission axis of the linear polarizer, and one or more adhesive layers formed on an upper surface and a lower surface of the reflective polarizer film, wherein at least one of the one or more adhesive layers is formed of a color compensation adhesive for decreasing the reflectance of external light, and wherein the color compensation adhesive includes an adhesive resin and a light absorbing agent, and the light absorbing agent is a mixture of dyes having an absorption wavelength of 490 to 500 nm and 580 to 590 nm.