| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a wide and long stretched film having a prescribed orientation angle, a large Nz coefficient over the entire width, and small variations in the orientation angle and the Nz coefficient in the entire width. <P>SOLUTION: The long stretched film is made of a transparent resin having a positive intrinsic birefringence. An average orientation angle θ is in a range of 10 to 80 ° relative to the width direction, and an average Nz coefficient is in a range exceeding 2.0 and equal to or lower than 10.0. <P>COPYRIGHT: (C)2012,JPO&INPIT |
