Led backlight

A method of making a backlight assembly comprising:

• providing a housing having a plurality of internal surfaces, at least one of the internal surfaces is a light emission surface and an opposing surface is a reflective surface;
• disposing an array of LEDs and conductors on an optical film, the optical film comprising at least one of a diffusing film, a reflective polarizing film, a multilayer optical film, and a structured surface film;
• and
• placing the optical film between the light emission surface and the reflective surface such that at least one LED of the array of LEDs has an illumination field directed toward the reflective surface.

An LED backlight assembly comprising:

• a housing having a plurality of internal surfaces, at least one of the internal surfaces is a light emission surface and an opposing surface is a reflective surface;
• an optical film disposed between the light emission surface and the reflective surface, the optical film comprising at least one of a diffusing film, a reflective polarizing film, a multilayer optical film, and a structured surface film, wherein the optical film is non-planar and portions of the optical film are disposed on the reflective surface;
• and
• an array of LEDs in electrical communication disposed on the optical film, wherein at least one LED of the array of LEDs has an illumination field that is directed toward the reflective surface.