US 12,292,238 B2
Heat dissipation member
Yuichi Abe, Satsumasendai (JP)
Assigned to KYOCERA Corporation, Kyoto (JP)
Appl. No. 17/802,127
Filed by KYOCERA Corporation, Kyoto (JP)
PCT Filed Feb. 25, 2021, PCT No. PCT/JP2021/007216
§ 371(c)(1), (2) Date Aug. 24, 2022,
PCT Pub. No. WO2021/172479, PCT Pub. Date Sep. 2, 2021.
Claims priority of application No. 2020-031035 (JP), filed on Feb. 26, 2020; application No. 2020-031049 (JP), filed on Feb. 26, 2020; and application No. 2020-031059 (JP), filed on Feb. 26, 2020.
Prior Publication US 2023/0080077 A1, Mar. 16, 2023
Int. Cl. F28D 15/02 (2006.01); F28D 15/04 (2006.01); H01L 23/427 (2006.01); H05K 7/20 (2006.01)
CPC F28D 15/0233 (2013.01) [F28D 15/04 (2013.01); H01L 23/427 (2013.01); H05K 7/20 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A heat dissipation member comprising:
an intermediate member with a plate shape made of a ceramic and comprising a plurality of through holes, each of the plurality of through holes penetrating through a first surface and a second surface of the intermediate member, located opposite to each other;
a first member with a plate shape made of a ceramic and comprising a first groove portion on a third surface facing the first surface of the intermediate member; and
a second member with a plate shape made of a ceramic and comprising a plurality of second groove portions on a fourth surface facing the second surface of the intermediate member, wherein
a surface roughness of an inner surface of each of the plurality of second groove portions is larger than a surface roughness of an inner surface of each of the plurality of through holes in the intermediate member.