Patent ID: 9618675
Date: 2017-04-11
CPC Classifications: G02B

Claim:
1. A backlight assembly comprising: at least one light source; a light guide plate facing the at least one light source in a first direction, wherein the light guide plate includes a first surface on which light emitted from the at least one light source is incident and a second surface through which the light incident on the first surface is emitted; and at least one light collimation unit protruding from an upper surface of the light guide plate, the at least one light collimation unit facing the at least one light source, wherein the at least one light collimation unit has a trapezoidal shape when viewed from the first surface of the light guide plate, wherein the at least one light collimation unit comprises a first side inclined part in a second direction substantially perpendicular to the first direction, wherein the first side inclined part forms a first angle with respect to a bottom surface of the at least one light collimation unit, the first angle being less than or equal to a predetermined value, and wherein the predetermined value is 30°; and at least one guide groove between the light collimation units in a lower surface of the light guide plate along the first surface of the light guide plate.