US 12,222,776 B1
Heat sinks for bare die multi-chip packages
Ali Elashri, Seattle, WA (US); William Mark Megarity, Renton, WA (US); Ryan F Conroy, Seattle, WA (US); Chetan Sanjay Agarwal, Seattle, WA (US); and Priti Choudhary, Sunnyvale, CA (US)
Assigned to Amazon Technologies, Inc., Seattle, WA (US)
Filed by Amazon Technologies, Inc., Seattle, WA (US)
Filed on Dec. 10, 2021, as Appl. No. 17/547,919.
Int. Cl. G06F 1/18 (2006.01); G06F 1/20 (2006.01); H05K 7/20 (2006.01)
CPC G06F 1/183 (2013.01) [G06F 1/20 (2013.01); H05K 7/20254 (2013.01); G06F 2200/201 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A processor mounting system, comprising:
a bare die processor; and
a mounting structure for the bare die processor, the mounting structure comprising:
an upper plate comprising:
a lower surface configured to be positioned proximate an upper surface of the bare die processor; and
a heat transfer portion configured to transfer heat conducted to the upper plate from the bare die processor to a cooling fluid in fluid communication with the heat transfer portion;
a lower plate positioned on an opposite side of the bare die processor from the upper plate, wherein the lower plate includes a plurality of posts positioned along edges of the lower plate, wherein the plurality of posts include protruding portions from an upper surface of the upper plate when assembled in the mounting structure, the protruding portions having notches; and
a bracket configured to be positioned on the upper surface of the upper plate, wherein:
the bracket includes a central portion and legs extending towards the protruding portions of the plurality of posts when coupled to the upper surface of the upper plate,
the bracket is configured to engage with the upper surface of the upper plate at the central portion,
end portions of the legs are configured to simultaneously engage with the plurality of posts,
slots in the end portions of the legs are configured to simultaneously engage with notches in the plurality of posts as the legs are pushed downwards such that the legs and the central portion of the bracket provide a balanced downward force on the upper plate, and
the slots are stepped between a first position and a second position, wherein, in the first position, the slots are able to fit over the plurality of posts, and wherein, in the second position, the slots engage with the notches.