US Patent No. 10,398,024

STRETCHABLE CIRCUIT BOARD AND METHOD FOR MANUFACTURING STRETCHABLE CIRCUIT BOARD


Patent No. 10,398,024
Issue Date August 27, 2019
Title Stretchable Circuit Board And Method For Manufacturing Stretchable Circuit Board
Inventorship Masayuki Iwase, Tokyo (JP)
Takeo Wakabayashi, Tokyo (JP)
Eiji Mizuno, Sakado (JP)
Assignee NIPPON MEKTRON, LTD., Tokyo (JP)

Claim of US Patent No. 10,398,024

1. A stretchable circuit board, comprising:a stretchable base;
a stretchable wiring portion formed on at least one of a first main surface and a second main surface of the stretchable base;
a reinforcement base having in-plane rigidity higher than that of the stretchable base;
a conductor portion formed on at least one of a first main surface and a second main surface of the reinforcement base, and electrically continuous with the stretchable wiring portion; and
an elastomer layer formed on at least one of the first main surface and the second main surface of the reinforcement base, wherein
the reinforcement base overlaps with a partial area of the stretchable base,
an other area of the stretchable base is exposed from the reinforcement base,
the stretchable wiring portion extends on the other area and over the partial area,
the elastomer layer and the stretchable base are layered and joined with each other,
the elastomer layer lies between the conductor portion and the reinforcement base,
the conductor portion is in contact with one surface of the elastomer layer,
the elastomer layer has an electrically insulating property, and
the elastomer layer entirely covers the first main surface of the reinforcement base.