Patent ID: 8337046

Claim:
A luminous element for a backlight unit, comprising: a substrate; a plurality of electrodes formed on the substrate and spaced apart from one another; a plurality of luminous chips respectively mounted on the plurality of electrodes to be connected electrically to one another; a first vertical hole that penetrates the substrate, wherein one of the electrodes is formed to extend to a bottom surface of the substrate through the first vertical hole; a molding portion to encapsulate the plurality of luminous chips; and a case to accommodate the substrate and comprising flat sidewalls, a plurality of flat sidewall protrusions on each sidewall that extend in the plane of the respective sidewall away from the substrate, and an open top portion, wherein the flat sidewall protrusions protrude on opposite sides of the case at an upper end of the case in respective regions on which the luminous chips are mounted to cover at least a portion of light emitted from the luminous chips emitted toward the flat sidewalls.