| 摘要 |
PROBLEM TO BE SOLVED: To decrease defects or deposition of dust on a display screen when a polarizing plate produced from a phase difference type film in a roll state is used for a liquid crystal display device. SOLUTION: The phase difference type film roll is manufactured by winding up the following phase difference type long film with a peelable protective film laminated on at least one surface of the film into a roll state. The phase difference type long film consists of a polymer long film having the retardations Re450, Re550 and Re650 at the wavelengths of 450, 550 and 650 nm, respectively, satisfying (1): 0.6<(Re450)/(Re550)<0.97 and (2): 1.01<(Re650)/(Re550)<1.4 and having the refractive index nx in the direction of the slow phase axis and ny in the direction perpendicular to the slow phase axis, both in the film plane and having refractive index nz in the thickness direction satisfying 0.5<=(nx-nz)/(nx-ny)<=2.
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