US 12,156,379 B2
Semiconductor storage device
Seiichi Tajima, Nagareyama Chiba (JP)
Assigned to Kioxia Corporation, Tokyo (JP)
Filed by KIOXIA CORPORATION, Tokyo (JP)
Filed on Jun. 15, 2022, as Appl. No. 17/841,377.
Claims priority of application No. 2022-008698 (JP), filed on Jan. 24, 2022.
Prior Publication US 2023/0240049 A1, Jul. 27, 2023
Int. Cl. H05K 7/20 (2006.01); G06F 1/20 (2006.01)
CPC H05K 7/20409 (2013.01) [G06F 1/20 (2013.01); H05K 7/2039 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A semiconductor storage device comprising:
a housing;
a board in the housing;
a semiconductor memory component on the board;
a controller on the board, the controller being configured to control the semiconductor memory component; and
a heat-dissipation structure on the housing, the heat-dissipation structure being exposed to an outside of the housing, wherein
the housing has a first region and a second region, the first region overlaps the semiconductor memory component in a first direction, the first direction being a thickness direction of the board, the second region overlaps the controller in the first direction,
the heat-dissipation structure includes a plurality of first heat-dissipation fins, a plurality of second heat-dissipation fins, and a first cover portion,
the plurality of the first heat-dissipation fins are on the first region,
each of the plurality of the first heat-dissipation fins extends in a second direction, the second direction being a direction from the semiconductor memory component to the controller,
the plurality of the second heat-dissipation fins are on the second region,
the plurality of the second heat-dissipation fins are apart from the plurality of the first heat-dissipation fins in the second direction,
each of the plurality of the second heat-dissipation fins extends in the second direction,
the first cover portion is between the plurality of the first heat-dissipation fins and the plurality of the second heat-dissipation fins, or the first cover portion is at a gap between the second heat-dissipation fins, and
the first cover portion covers at least a part of the gap between the second heat-dissipation fins when viewed from the second direction.