| 摘要 |
<p>A polarizing plate protective film having a small retardation value variation and having an excellent stability against the polarizer deterioration, the polarizing plate dimensions, and the polarizing plate curl. A polarizing plate protective film is characterized in that the two polarizing plate protective films sandwich a polarizer forming a polarizing plate, that Ro defined by expression (I) below of at least one of the two polarizing plate protective films is 0 to 10 nm, the retardation value Rt defined by expression (II) below is-20 to 20 nm, and that the polarizing plate protective film has a hardcoat layer. Expression (I) Ro=(nx-ny)8d Expression (II) Rt={(nx+ny)/2-nz)}8d (In the expressions, nx is the refractive index along the slow axis in the plane of the polarizing plate protective film, ny is the refractive index in the direction perpendicular to the slow axis in the plane, nz is the refractive index in the direction of the film thickness, and d is the thickness (nm) of the film.)</p> |
