Patent ID: 7505109
Filing Date: 2009-03-17
Classification: F21K,F21V,G02B,H05K

Abstract:
1. A heat dissipation structure of a backlight module, comprising: a circuit board having an electric circuit layer, a heat conductive layer respectively formed on two opposite surfaces of the circuit board, a plurality of first through holes filled with first heat-conductive material, and a plurality of second through holes filled with second heat-conductive material, wherein the first through holes and the second through holes penetrate through the electric circuit layer and the heat-conductive layer of the circuit board, respectively, and the heat conductive layer has a first isolation portion disposed therein for electrically isolating the first through holes and the second through holes; a first heat-conductive element disposed on the circuit layer and covering the first through holes; a second heat-conductive element disposed on the circuit layer and covering the second through holes; a first LED chip disposed on the first heat-conductive element and electrically connected to the electric circuit layer; a second LED chip disposed on the second heat-conductive element and electrically connected to the electric circuit layer.