Patent ID: 7866870
Filing Date: 2011-01-11
Classification: G02B

Abstract:
1. A backlight assembly comprising: a light source emitting light; and a light guide plate (LGP), the light guide plate comprising an incident surface on which light emitted from the light source is incident, a top surface which adjoins the incident surface, and a bottom surface which adjoins the incident surface, faces the top surface, and comprises a plurality of lower prisms separated from one another by a flat portion interposed between each pair of lower prisms, and wherein each lower prism comprises a first surface and a second surface adjoining one end of the first surface, wherein the first surface comprises a plurality of oblique planes each having a different positive slope, wherein the second surface has a negative slope, wherein the slope is defined as an angle formed by a surface and a line normal to the incident surface, wherein the oblique planes are symmetrical with respect to a line which bisects a first line which connects the one end and opposite end adjoining the flat portion and defining the first surface.