Abstract: A thermal dissipation device includes a main body and a support member. The main body has an upper surface, a lower surface opposite to the upper surface, and a lateral surface. The main body defines an injection hole extending through the main body, and includes an inner ring protruding from the upper surface and adjacent to the injection hole and an outer ring protruding from the upper surface and adjacent to the lateral surface. The support member connects to the lateral surface of the main body. An upper surface of the inner ring is higher than an upper surface of the outer ring. A first intersection point between the inner ring and the upper surface of the main body is higher than a second intersection point between the outer ring and the upper surface of the main body.

Abstract: A thermal dissipation device includes a main body and a support member. The main body has an upper surface, a lower surface opposite to the upper surface, and a lateral surface. The main body defines an injection hole extending through the main body, and includes an inner ring protruding from the upper surface and adjacent to the injection hole and an outer ring protruding from the upper surface and adjacent to the lateral surface. The support member connects to the lateral surface of the main body. An upper surface of the inner ring is higher than an upper surface of the outer ring. A first intersection point between the inner ring and the upper surface of the main body is higher than a second intersection point between the outer ring and the upper surface of the main body.

Abstract: A package of a leadframe with heatsinks, including a leadframe, a die, a first heatsink and a second heatsink. The leadframe has a die pad and a plurality of leads, and the leads are disposed around the die pad. The die is disposed on the die pad. The first heatsink is disposed on a first side of the leadframe and has a plurality of first positioning portions. The second heatsink is disposed on a second side of the leadframe. The second heatsink has a plurality of second positioning portions. The second positioning portions correspond to the first positioning portions of the first heatsink, whereby the warping problem of the leadframe is resolved.

Abstract: The present invention relates to a package of a leadframe with heatsinks. The package of the invention comprises a leadframe, a die, a first heatsink and a second heatsink. The leadframe has a die pad and a plurality of leads, and the leads are disposed around the die pad. The die is disposed on the die pad. The first heatsink is disposed on a first side of the leadframe and has a plurality of first positioning portions. The second heatsink is disposed on a second side of the leadframe. The second heatsink has a plurality of second positioning portions. The second positioning portions are corresponding to the first positioning portions of the first heatsink, whereby the warped problem of the leadframe will be resolved.