| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a diffusion sheet capable of suppressing uneven luminance. <P>SOLUTION: The diffusion sheet includes uneven distribution of fine irregularities on the surface, wherein the sheet includes a flat part where the maximum height (Ry) of the fine irregularities is ≤2 μm and a rough part where the maximum height (Ry) of the irregularities is larger than 2 μm, and the flat part is present to enclose the rough part. <P>COPYRIGHT: (C)2011,JPO&INPIT |
