LIGHT DIFFUSING FILM, METHOD FOR MANUFACTURING THE FILM, SURFACE LIGHT SOURCE DEVICE USING THE FILM AND DISPLAY DEVICE

摘要

PURPOSE: To provide a new protective film to solve the problem that a conventional protective film damages the surface of the object in contact with the protective film because of beads included in the protective film, and to provide a surface light source device which uses the new protective film and moreover, a display device which uses the surface light source device. CONSTITUTION: The light diffusing film 1 is formed by laminating a rough layer 3 having a rough surface 4 on at least one surface of a transparent plastic film 2. The ten-point average roughness of the rough surface is specified to 0.5 μm to 2.0 μm and the peak count number by the Pc1 method is specified to 16 to 60.