LIGHT-REFLECTIVE FILM AND EDGE LIGHT-TYPE BACKLIGHT

摘要

A light-reflective film suitable particularly for a reflective sheet used in an edge light-type backlight and which fulfills (i) to (iv). (i) The film comprises at least two laminated layers. (ii) The difference in surface roughness (SRa) between one surface and the other surface is at least 0.5 µm. (iii) A value obtained by dividing the surface roughness (SRa) of one surface by the surface roughness (SRa) of the other surface is at least 6.0. (iv) The thickness (T (µm)) of the entire film and the bending rigidity (S (mN·m)) fulfills the formula 1 ≤ S/T × 1,000 ≤ 25.