| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical layered film nearly free from luminance unevenness, capable of hiding a bright line of a backlight and having excellent light diffusion properties when used for a light diffusion film, suppressing blocking to an adjacent member when assembled in a backlight unit and nearly free from color shift of the film formed when a recycled raw material is used. <P>SOLUTION: In the optical layered film including a light diffusion layer and an adhesion preventing layer provided thereon, the adhesion preventing layer is a biaxially oriented layer comprising a polyester and an inorganic filler, containing substantially no void and having 400 to 5,000 nm surface roughness Rz. The light diffusion layer comprises: a polyester having a melting point lower than that of the polyester of the adhesion preventing layer by 5 to 50°C; and a light diffusion component, wherein the light diffusion component is a substance having a refractive index substantially equal to that of the inorganic filler of the adhesion preventing layer. <P>COPYRIGHT: (C)2010,JPO&INPIT |
