Backlight module

A backlight module, comprising:

• at least one light source;
• and
• a light guide plate for guiding a light beam emitted by the light source and at least comprising:
• at least one light incident surface disposed adjacent to the light source;
• a light-emitting surface connected with the light incident surface and forming an angle with the light incident surface;
• a bottom surface connected with the light incident surface and disposed opposite the light-emitting surface;
• a plurality of lenticular lenses arranged on the light-emitting surface in a direction substantially parallel to the light incident surface, each two adjacent lenticular lenses being apart from each other, and each of the lenticular lenses extending in a direction substantially perpendicular to the light incident surface;
• and
• a plurality of micro dots formed on at least the bottom surface, wherein a distance between two adjacent lenticular lenses is denoted as P, an inscribed circle diameter of a projection of each of the micro dots projecting on the bottom surface is denoted as ψ, a maximum width of a light-emitting area of the light source measured in a direction parallel to the light incident surface is denoted as W, and the light guide plate satisfies the following relation:
• 0.5≦(P/ψ)≦15;
• and
• 5≦(W/P)≦500.