Back light unit and liquid crystal display using the same

摘要

A backlight unit comprises: a first light guide plate (201) comprising intaglio patterned lines (301) formed along a first direction thereon to define light guide channels in the first direction; a second light guide plate (202) disposed under the first light guide plate (201) and comprising intaglio patterned lines (302) formed thereon along a second direction crossing the intaglio patterned lines (301) of the first light guide plate (201) to define light guide channels in the second direction; first light sources (203) disposed to face the side of the first light guide plate (201) and irradiating light to the light guide channels of the first direction; and second light sources (204) disposed to face the side of the second light guide plate (202) and irradiating light to the light guide channels of the second direction.