PREPARING METHOD FOR POLARIZER, POLARIZER AND POLARIZING PLATE COMPRISING THE SAME

摘要

PURPOSE: A manufacturing method of a polarizer and a polarizing plate thereof are provided to prevent the twist of a liquid crystal cell by reducing a difference between the shrinkage in an absorption axis due to a thermal stress and the shrinkage in a transmission axis direction. CONSTITUTION: A polyvinyl alcoholometer film is dry-extended with a traverse extension ration of 2 or 2.5 times in a traverse direction. A wet-extended polyvinyl alcohol film is dry-extended with a longitudinal extension ration of 4.5 or 7 times in a longitudinal direction.