A backlight module for a liquid crystal display and a method for manufacturing a heat dissipation part of the backlight module. The compounds have general formula I:in which A and B are carbocycles or heterocycles. The interstitial spaces are individually surrounded by longitudinally-contacting sidewall linings that are over outer sidewalls of four of the cylinder-like structures. The tray-conveyor has at least one discharge-station for the organ packages that are to be moved to the processing station or stations.