OPTICAL FILM HAVING IMPROVED STORAGE STABILITY AT A LOW TEMPERATURE AND A POLARIZING PLATE COMPRISING THE SAME

摘要

The present invention relates to an optical film with excellent room temperature stability and a polarizing plate including the same and, more specifically, to an acrylic optical film having a thermal expansion coefficient of 5-30 ppm/K inclusive and moisture ratio of 0.8-2 wt% at a temperature 10-40°C exclusive and a polarizing plate including the same. The optical film according to the present invention has the moisture ratio and the thermal expansion coefficient of a specific range at the room temperature. Therefore, the polarizing plate of the present invention can mitigate curl which can be generated depending on the variation of temperature and moisture of keeping or usage environment after the polarizing plate is manufactured. The polarizing plate of the present invention can be used in an information electronic device including a polarizing plate with excellent curl characteristics and a display device including the same.