PURPOSE: A backlight assembly is provided to seal a first frame portion and a second frame portion and include a heat emitting route portion in a container. CONSTITUTION: A backlight assembly includes a light source module and a container. The container includes a first frame portion and a second frame portion. The container contains the light source module. The first frame portion includes a first bottom portion(312) and first sidewalls(314) connected to the first bottom portion. The first and second frame portions are sealed. The second frame portion includes a second bottom portion(322). The second bottom portion forms a heat emitting route portion(330) and the first bottom portion.
