Light guide and display using it in a backlight unit

Abstract

A light guide plate includes a first major surface, a second major surface opposite the first major surface, and a pair of opposite primary side surfaces and a pair of opposite secondary side surfaces that are perpendicular to the first and second major surfaces. The light guide plate further includes a plurality of pairs of opposing grooves including a first groove provided on the first major surface and a second groove provided on the second major surface. The light guide plate further includes a plurality of light sources configured relative to the grooves. A backlight unit includes the described light guide plate fixed to a back plate. A liquid crystal display device includes the backlight unit positioned behind a liquid crystal panel.

Dependencies are inferred from the claim text.