Patent ID: 7824093

Claim:
A backlight assembly comprising: a light source emitting light; a light-guide plate (LGP) including a light-incident surface, a light-reflecting surface and a light-emitting surface, the light-incident surface receiving light from the light source, the light-reflecting surface having a plurality of first prism patterns spaced apart from each other and a plurality of flat portions each of which is formed between the first prism patterns, the flat portions being substantially perpendicular to the light-incident surface, and the light-emitting surface having a plurality of second prism patterns formed thereon; a reflective sheet disposed below the LGP; and at least one optical sheet disposed on the LGP, wherein the first prism patterns comprise: a first slanted surface being extended from a first flat portion of the light-reflecting surface toward the light-emitting surface; a second slanted surface being extended from the first slanted surface toward the light-reflecting surface; and a third slanted surface being extended from the second slanted surface and being connected to a second flat portion.