Patent ID: 6606136
Filing Date: 2003-08-12
Classification: G02B

Abstract:
An iodine-type polarizing plate comprising a uniaxial stretched polyvinyl alcohol resin film with iodine adsorbed thereto in an oriented state and a protection film bonded to at least one surface of said resin film,wherein the polarizing plate has a single transmittance of about 42.5% or more, a degree of polarization of about 99% or more, and a neutral coefficient Np of 0 to about 4 which is calculated from the following expression (I), and the polarizing plate satisfies the relationship represented by the following expression (II); Np=|{square root over ((Pa*)2+(Pb*)2)}âˆ’{square root over ((Qa*)2+(Qb*)2)}|â€ƒâ€ƒ(I) wherein Pa*, Pb*, Qa*, and Qb* respectively denote a* and b* in a parallel hue and a* and b* in a perpendicular hue in L*a*b* color system;{square root over ((Pa*)2+(Pb*)2)}<4.5â€ƒâ€ƒ(II).