| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cellulose acylate film at a high yield at a low cost, which has a small or minus retardation in the in-plane or in the thickness-direction, wherein there is found no foreign matter nor rough string or injury in a film, and to provide an optically-compensatory film excellent in optical properties, a polarizing plate and a liquid crystal display device at low cost using the inexpensive cellulose acylate film excellent in optical properties. <P>SOLUTION: A cellulose acylate film has an Re<SB>(590)</SB>of the retardation value in the in-plane and an Rth<SB>(590)</SB>of the retardation value in the thickness-direction satisfying formulae (I) and (II); and a light transmittance of 88% or more at a wavelength of 590 nm, wherein the number of foreign matters that have a long axis of 50 to 200 μm is 20 pieces/m<SP>2</SP>or less. Formula (I) is 0≤Re<SB>(590)</SB>≤10. Formula (II) is -25≤Rth<SB>(590)</SB>≤25. <P>COPYRIGHT: (C)2008,JPO&INPIT |
