| 摘要 |
PROBLEM TO BE SOLVED: To further improve the anisotropic diffusion capability of a light diffusion sheet of synthetic resin having an approximately wavy or approximately cylindrical rough pattern, in which crests are formed in series in one direction and a crest and a trough are repeated in a direction orthogonal to this direction.SOLUTION: A sheet having a series of crests in one direction and in which a crest and a trough are repeated in a direction orthogonal to the series of crests is used as an original fabric sheet. Fine particles are attached to the crest parts or trough parts of the original fabric sheet. In this condition, the entire surface of the original fabric sheet is subjected to a conducting process such a metal deposition. This is then electrically plated, thereby forming a mold of a surface shape in which a waving pattern and fine roughness are combined. By molding a resin sheet by this mold, a light diffusion sheet is obtained such that crests are formed in series in one direction, a crest and a trough are repeated in a direction orthogonal to this direction, and fine roughness is imparted to at least part of the surface. Thus, a manufacturing method for a light diffusion sheet is provided. |
