Patent 7128447 was granted and assigned to AU Optronics on October, 2006 by the United States Patent and Trademark Office.
A fastening device is provided for cooling the light source in a backlight module. The fastening device includes a frame for clipping the edge of a light source and a cooling unit disposed between the frame and the light source. The cooling unit is not only utilized for cooling, it also utilized for preventing the oscillation that affects the emitting efficiency and the operating stability of the light source.