US Patent No. 10,342,129

SUBSTRATE AND METHOD OF MANUFACTURING THE SAME


Patent No. 10,342,129
Issue Date July 02, 2019
Title Substrate And Method Of Manufacturing The Same
Inventorship Shigeo Iriguchi, Kawasaki (JP)
Takahiro Kitagawa, Kawasaki (JP)
Mitsunori Abe, Kawasaki (JP)
Shigeru Sugino, Edogawa (JP)
Nobuo Taketomi, Kodaira (JP)
Kiyoyuki Hatanaka, Kawasaki (JP)
Ryo Kanai, Kawasaki (JP)
Assignee FUJITSU LIMITED, Kawasaki (JP)

Claim of US Patent No. 10,342,129

1. A substrate comprising:an insulation layer that includes a glass cloth layer including a glass cloth impregnated with a resin and a resin layer formed so as to sandwich the glass cloth layer and not including the glass cloth: and
a through hole having a hole included in the insulation layer and plating formed in an inner surface of the hole,
a side surface of the glass cloth on a side of the hole includes a recessed portion formed so as to be recessed with respect to a side surface of the resin layer on the side of the hole, and
the plating is recessed toward an outside of the hole at a position of the recessed portion of the glass cloth, and
a first inner diameter of the through hole at a position of the glass cloth layer is larger than a second inner diameter of the through hole at a portion of the resin layer, wherein the recessed portion is formed so that a press-fit pin is not in contact with the recessed plating at the position of the recessed portion of the glass cloth when the press-fit pin is inserted into the hole.