US 12,219,735 B2
Cooling device and method for manufacturing the same
Takahiro Tominaga, Ichihara (JP); and Kazuki Kimura, Sodegaura (JP)
Assigned to MITSUI CHEMICALS, INC., Tokyo (JP)
Appl. No. 17/425,181
Filed by MITSUI CHEMICALS, INC., Tokyo (JP)
PCT Filed May 15, 2020, PCT No. PCT/JP2020/019491
§ 371(c)(1), (2) Date Jul. 22, 2021,
PCT Pub. No. WO2020/241314, PCT Pub. Date Dec. 3, 2020.
Claims priority of application No. 2019-099573 (JP), filed on May 28, 2019; and application No. 2019-105544 (JP), filed on Jun. 5, 2019.
Prior Publication US 2022/0124943 A1, Apr. 21, 2022
Int. Cl. H05K 7/20 (2006.01); F28F 3/10 (2006.01); F28F 3/12 (2006.01); F28F 21/06 (2006.01); F28F 21/08 (2006.01); H01L 23/473 (2006.01)
CPC H05K 7/20272 (2013.01) [F28F 3/10 (2013.01); F28F 3/12 (2013.01); F28F 21/067 (2013.01); F28F 21/081 (2013.01); H01L 23/473 (2013.01); H05K 7/20254 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A cooling device, comprising a casing and a flow channel inside the casing, the casing comprising a first metal portion, a second metal portion and a resin portion, wherein each of the first metal portion and the second metal portion has a principal surface, the principal surface of the first metal portion faces the principal surface of the second metal portion, the principal surface of the first metal portion and the principal surface of the second metal portion are principal surfaces of the casing, the principal surface of the first metal portion has a concave-and-convex pattern corresponding to a shape of the flow channel, the resin portion is between the first metal portion and the second metal portion, the resin portion is bonded to each of the first metal portion and the second metal portion, thereby connecting the first metal portion with second metal portion, a convex part of the concave-and-convex pattern of the principal surface of the first metal portion is in direct contact with the principal surface of the second metal portion.
 
5. A method of manufacturing a cooling device, the cooling device comprising a casing including a first metal member and a second metal member, a flow channel inside the casing, and a resin component, the method comprising:
bonding the resin component to the first metal member by injection molding; and
then providing by injection molding a resin member between the first metal member and the second metal member having a concave-and-convex pattern corresponding to a shape of the flow channel and thereby connecting the second metal member with the first metal member previously bonded to the resin component.