Patent ID: 8328407
Filing Date: 2012-12-11
Classification: G02B

Abstract:
1. A light guide plate, comprising: an incident surface to receive incident light from a light source; an exit section to output exit light having a light distribution different from a light distribution of the incident light; a reflective section opposite to the exit section; a plurality of first patterns disposed on the exit section and arranged in a first direction to distribute the exit light with maximum brightness in a direction perpendicular to the exit section; and a plurality of second patterns disposed on the reflective section to scatter the incident light, wherein the second patterns comprise: a first unit pattern, a second unit pattern adjacent to the first unit pattern in the first direction and at a first interval, and a third unit pattern and a fourth unit pattern adjacent to the first unit pattern, wherein the third unit pattern and the fourth unit pattern are spaced apart from each other by a second interval in a second direction that crosses the first direction, and wherein the first interval is smaller than the second interval, wherein each first pattern comprises a triangle-like shape in a view taken along a plane in a direction perpendicular to the exit section and perpendicular to the first direction, an angle between a side of the triangle-like shape and the exit section is θ