A backlight assembly includes a lamp which generates light, a lamp socket which receives the lamp, an alignment plate including a socket insertion hole formed therethrough to receive the lamp socket, and a receiving container including a cutout portion formed therethrough to receive the lamp socket. The receiving container is attached to the alignment plate which has the lamp socket inserted through the socket insertion hole, and a portion of the lamp socket is exposed outside the receiving container through the socket insertion hole when the receiving container is attached to the alignment plate.