US Patent No. 9,832,889

CIRCUIT BOARD AND METHOD FOR PRODUCING SAME


Patent No. 9,832,889
Issue Date November 28, 2017
Title Circuit Board And Method For Producing Same
Inventorship Kuniaki Yosui, Nagaokakyo (JP)
Assignee MURATA MANUFACTURING CO., LTD., Kyoto (JP)

Claim of US Patent No. 9,832,889

1. A circuit board, comprising:
a main portion including a plurality of base sheets stacked in a predetermined direction;
at least one uneven portion on at least one of the base sheets;
an internal component provided in the main portion; and
an auxiliary member including a strip-shaped sheet member provided between the internal component and one of the plurality
of base sheets on which the at least one uneven portion is provided; wherein

the at least one uneven portion includes a concave portion and a convex portion extending in a direction perpendicular or
substantially perpendicular to the predetermined direction;

each of the concave portion and convex portion of the at least one uneven potion has a strip-shape when viewed in the predetermined
direction;

the concave portion is sunken in the predetermined direction;
the convex portion protrudes in an opposite direction to the predetermined direction;
an outline of the internal component is within an outline of the at least one uneven portion when viewed in a plan view in
the predetermined direction;

the at least one uneven portion is located on a side of the one of the plurality of base sheets that is farther away from
the internal component in the predetermined direction; and

the auxiliary member overlaps with the convex portion when viewed in the predetermined direction.