Patent ID: 9713259
Date: 2017-07-18
CPC Classifications: H01L,H05K

Claim:
1. A circuit substrate having a built-in component, comprising: conductive layers and insulating layers stacked together, one of the conductive layers being a core layer that is thickest among the conductive layers and that has a penetrating hole formed therein, said core layer being configured to be grounded; and a component embedded in said penetrating hole, wherein a signal wiring line that is configured to transmit high frequency signals is formed in one of the conductive layers facing the core layer, said signal wiring line overlapping an entire length or width of the penetrating hole and thereby passing across the penetrating hole in a plan view, and wherein the component includes a ground conductor configured to be grounded, the ground conductor having a planar shape extending towards peripheral edges of the component and overlapping a portion of the signal wiring line that passes across the penetrating hole in the plan view.