Fabricating coolant-cooled heat sinks with internal thermally-conductive fins

An apparatus comprising:

• a coolant-cooled heat sink with a coolant-carrying compartment, the coolant-cooled heat sink comprising:
• a heat transfer base with a heat transfer surface to couple to a component to be cooled, the heat transfer base including a plurality of thermally-conductive fins extending into the coolant-carrying compartment from a surface of the heat transfer base opposite to the heat transfer surface;
• a cover sealed to the heat transfer base, the heat transfer base and cover defining, at least in part, the coolant-carrying compartment therebetween;
• a screen with openings, the screen being disposed over the plurality of thermally-conductive fins of the heat transfer base, between the plurality of thermally-conductive fins and the cover;
• and
• a joining material disposed between the screen and cover, and within, at least in part, the openings in the screen, the joining material joining the plurality of thermally-conductive fins to the cover across the screen.

An apparatus comprising:

• a heat-generating electronic component;
• a coolant-cooled heat sink comprising:
• a heat transfer base with a heat transfer surface coupled to the heat-generating electronic component, the heat transfer base including a plurality of thermally-conductive fins extending into a coolant-carrying compartment of the coolant-cooled heat sink, from a surface of the heat transfer base opposite to the heat transfer surface;
• a cover sealed to the heat transfer base, the heat transfer base and the cover defining, at least in part, the coolant-carrying compartment therebetween;
• a screen with openings, the screen being disposed over the plurality of thermally-conductive fins of the heat transfer base, between the plurality of thermally-conductive fins and the cover;
• and
• a joining material disposed between the screen and cover, and within, at least in part, the openings in the screen, the joining material joining the plurality of thermally-conductive fins to the cover across the screen.