| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light diffusion sheet in which an internal diffusion film whose turbidity is raised by mixing organic diffusing agent inside is used as a substrate, refraction and diffusion of light are maximized by mixing two or more resin particles with different refractive indexes and applying them on the substrate and shielding force of an emission line is further enhanced. <P>SOLUTION: The light diffusion sheet for back light contains the internal diffusion film (2) having optical characteristics of haze of 40-95% and transmittance of 50-95% as the substrate and a light diffusion layer (5) coated with binder resin (4) and the two or more transparent resin particles (3a, 3b, 3c) with mutually different refractive indexes as the light diffusion layer formed at least one surface on the internal diffusion film (2). <P>COPYRIGHT: (C)2009,JPO&INPIT |
