| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a colored light diffusion sheet which does not have noticeable white stripes and has uniform light transmissivity within a sheet surface, even when the sheet having a light diffusion layer and a colored layer is manufactured using a multi-manifold coextrusion molding machine.SOLUTION: A colored light diffusion sheet comprises a light diffusion layer containing a transparent resin, light diffusing particles, and colorant, and a colored layer formed on one surface of the light diffusion layer and containing transparent resin and colorant. Content of the colorant C(mass%) in the entire light diffusion layer, thickness T(μm) of the light diffusion layer in a cross-sectional direction, content of the colorant C(mass%) in the entire colored layer, and thickness T(μm) of the colored layer in the cross-sectional direction satisfy the following expressions (1), (2): 3000≤(C×T+C×T)≤3500...(1), 1500≤C×T≤1900...(2).</p> |
