LIGHT-DIFFUSING SHEET AND BACKLIGHT DEVICE USING SAME

摘要

Disclosed is a light-diffusing sheet that can prevent the surface of the light-diffusing sheet and the surface of other members facing same from being scratched when used as a structural member in the backlight of a liquid crystal display or when the light-diffusing sheet is being transported, while fully realizing the light-diffusing properties thereof. The light-diffusing sheet of the present invention is equipped with a light-diffusing layer that contains fine grains, the surface of the aforementioned light-diffusing layer has a roughness curve with a maximum height (Rp) of at least 8.0 µm when the profile of the three-dimensional surface is measured, and the average grain size f of the fine grains contained in the aforementioned light-diffusing layer and the thickness d of the light-diffusing layer fulfill the relationship f/d = 0.7.