Patent ID: 8142041

Claim:
A backlight module, comprising: backlight sources; a diffuser plate adjacent the backlight source on a side of the backlight sources opposite a reflector; and a lenticular film having convex lenticular features on a viewing side, wherein the diffuser plate is located between the lenticular film and the backlight sources; wherein the backlight module has a distance “a” between the backlight sources and the diffuser plate, and has a distance “b” between adjacent backlight sources, and has an AB ratio of “a” divided by “b” of less than or equal to 0.5; wherein, when the backlight source is cold cathode fluorescent lamps, a CoC diffuser plate, a distance between a reflector and the CoC diffuser plate of 8 mm, and a AB ratio of 0.21, with two 0.2 mm polycarbonate bottom diffusers, and a 0.25 mm PET coated prismatic film, the cold cathode fluorescent lamps are not visible through the backlight module; and wherein the AB ratio is “a” divided by “b”, “a” is the distance between the cold cathode fluorescent lamps and the diffuser plate, and “b” is the distance between adjacent cold cathode fluorescent lamps.