Disclosed herein is a light-diffusing film for a backlight unit of a thin
film transistor-liquid crystal display. Specifically, the current
invention provides a light-diffusing film, including a transparent base
sheet, a light-diffusing layer, which is laminated on any one surface of
the base sheet and includes a light-diffusing resin and light-diffusing
particles, and an antiblocking layer, which is laminated on the other
surface of the base sheet and includes an antiblocking resin and
antiblocking particles, in which the light-diffusing particles satisfy a
predetermined relation between a specific surface area and a radius
thereof. Accordingly, the light-diffusing film of the current invention
can uniformly diffuse light transmitted from a light source lamp
positioned at the side surface or back surface of a display device, thus
realizing vivid and distinct display images.