Patent ID: 6954240
Filing Date: 2005-10-11
Classification: C09K,G02B,G02F

Abstract:
1. A method of producing a polarizing plate comprising a polarizer and a protective layer bonded to at least one surface of the polarizer, wherein moisture content of the polarizer is in a range from 5% to 30% when the protective layer is bonded to the polarizer, wherein a surface roughness of the polarizing plate in a direction perpendicular to the stretching direction is 0.04 μm or less on the basis of the centerline average roughness, and wherein the polarizing plate has transmittance of at least 35% and a polarization degree of at least 90%, and wherein the moisture content of the polarizer is in a range from 15% to 30% when the protective layer is bonded to the polarizer, provided that the moisture content is obtained by a calculation based on an equation of moisture content (%)=[(A−B)/B]×100, where A denotes a weight of the polarizer before bonding and B denotes a weight of the polarizer after being kept in a dryer of 120° C. for seven hours.