Backlight assembly and display apparatus having the same

摘要

A backlight assembly includes a light source generating light and a first optical member diffusing the light. The first optical member includes a first diffusion member provided on an exit surface of the first optical member, from which the light exits, to diffuse the light. The first diffusion member includes a plurality of edges each having a curved shape and extending between the exit surface and a vertex of the first diffusion member. Accordingly, the light exiting through the exit surface is effectively diffused by the edges of the first diffusion member.

主权项

1. A backlight assembly comprising:
a light source that generates light; and a first optical member, wherein the first optical member comprises:
a body including an incident surface to which the light is incident and an exit surface facing the incident surface, from which the light exits; anda first diffusion member disposed on the exit surface to diffuse the light,wherein the first diffusion member comprises:a single vertex;four inclined surfaces, wherein the four inclined surfaces meet at the single vertex, each of the four inclined surfaces is inclined with respect to a flat portion of the exit surface, and each of the inclined surfaces has a curved shape;four edges, wherein each of the four edges is disposed between the exit surface and the single vertex and has a curved shape; andwherein the first diffusion member comprising the first and third edges has a cross-section in a first segment that is defined by an elliptical arc of a first ellipse, which includes the first and third edges, and a chord connecting both ends of the elliptical arc of the first ellipse, and the first diffusion member comprising the second and fourth edges has a cross-section in a second segment that is defined by an elliptical arc of a second ellipse, which includes the second and fourth edges, and a chord connecting both ends of the elliptical arc of the second ellipse.