Patent ID: 7581868

Claim:
A backlight assembly comprising: a lamp that generates light; and a light guiding plate including: a light incident surface into which the light generated from the lamp is incident; a light reflecting surface extended from a side of the light incident surface, the light reflecting surface having a prism pattern, the prism pattern comprising prisms; and a light exiting surface extended from another side of the light incident surface, wherein an angle formed between the light incident surface and the light exiting surface is smaller than about 90 degrees, and the light exiting surface and the light reflecting surface face each other; wherein the prisms each have varying heights between the light incident surface and a selected position of a corresponding prism, the selected position being spaced a predetermined distance from the light incident surface; wherein a length of the predetermined distance is smaller than a length of the corresponding prism, the prisms each having a uniform height at a remaining region other than a region of the predetermined distance.