Patent ID: 9699905
Date: 2017-07-04
CPC Classifications: H01L,H05K

Claim:
1. A wiring board with a laminated body where one or more layer of each of an insulating layer and a conductor layer are laminated, the wiring board comprising: a plurality of connecting terminals formed separately from one another on the laminated body; and a filling member filled up between the plurality of connecting terminals, the filling member being filled up to a position lower than a height of the plurality of connecting terminals, wherein the connecting terminals have a cross section with a trapezoidal shape where a width of a first principal surface on a side contacting the laminated body is wider than a width of a second principal surface facing the first principal surface, a solder resist layer having an opening that exposes the plurality of connecting terminals and covering a wiring pattern connected to the plurality of connecting terminals, is provided on the laminate body, the wiring pattern has a cross section with a trapezoidal shape where a width of a third principal surface on a side contacting the laminated body is wider than a width of a fourth principal surface facing the third principal surface, and at least a part of the plurality of connecting terminals has a ratio of a width of the first principal surface with respect to a width of the second principal surface larger than a ratio of a width of the third principal surface with respect to a width of the fourth principal surface of the wiring pattern.