Light unit for display device

摘要

Disclosed is a light unit used for backlighting a display device such as an LCD panel, which emits perpendicularly-directed white surface light by using lateral monochromatic light. The light unit of the invention comprises: a monochromatic light source for emitting monochromatic light; a light guide plate placed at the side of the monochromatic light source, and having a hologram pattern formed on at least one of front and rear faces oriented perpendicular to incident light introduced from the monochromatic light source for emitting light in a direction substantially perpendicular to the incidence direction of light; and a fluorescent layer applied on the front face of the light guide plate for converting perpendicularly-directed emitted light into white light.