| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce a color shift of an IPS mode or FFS mode crystal display device. <P>SOLUTION: The IPS mode or FFS mode crystal display device has a low substitution degree layer which is mainly composed of cellulose acylate having a predetermined low substitution degree, or the low substitution degree layer and a high substitution degree layer which is mainly composed of cellulose acylate having a predetermined high substitution degree provided on at least one surface of the low substitution degree layer, and satisfies the following expressions (I)-(IV): (I) 0 nm≥Re(550)≥10 nm; (II)¾Rth(550)¾≥25 nm; (III)¾Re(630)-Re(450)¾≥10 nm; and (IV)¾Rth(630)-Rth(450)¾≥35 nm. <P>COPYRIGHT: (C)2012,JPO&INPIT |
