| 摘要 |
PROBLEM TO BE SOLVED: To provide a low cost light diffusion polyester film which allows the polyester film itself to have light diffusion, and also has excellent luminance characteristics especially in combination with a lens sheet, a prism sheet and a lens layer.SOLUTION: A laminated polyester film includes organic particles at least in one outer layer, wherein a polyester constituting the polyester film contains a titanium compound and a phosphorus compound in an amount satisfying formulas (1) 0<W≤20 and (2) 20≤W≤300 simultaneously, and the haze of the film is within a range of 40 to 95% and the total light transmittance is within a range of 85% or more, (wherein Windicates the titanium element content (ppm) in a polyester layer, and Windicates the phosphorus element content (ppm) in the polyester layer). |
