Patent ID: 7713092

Claim:
A backlight assembly comprising: a plurality of light sources emitting light; and a plurality of metal core printed circuit boards on which the light sources are mounted, the metal core printed circuit boards including connecting portions adjacent first and second longitudinal ends of the metal core printed circuit boards, wherein the metal core printed circuit boards are directly connected to each other by the connecting portions to emit light in a surface direction, and the metal core printed circuit boards are not otherwise connected to each other except at the connecting portions adjacent the first and second longitudinal ends thereof, wherein the metal core printed circuit boards include: a plurality of first metal core printed circuit boards having a first connecting portion including a convex portion provided on a first side surface of each first metal core printed circuit board, wherein the convex portion has a plurality of protrusions and a plurality of recesses formed at a distal end of the convex portion; and a plurality of second metal core printed circuit boards having a first connecting portion including a concave portion provided on a first side surface of each second metal core printed circuit board, wherein the concave portion has a plurality of protrusions and a plurality of recesses formed at a distal end of the concave portion, and wherein the protrusions and the recesses of the convex portion and the recesses and the protrusions of the concave portion engage with each other to electrically connect the first metal core printed circuit board to the second metal core printed circuit boards.