Patent ID: 8847356
Filing Date: 2014-09-30
Classification: H01L,H05K

Abstract:
1. A component-built-in wiring board comprising: a core material having a housing portion extending through upper and lower surfaces of the core material; a component accommodated in the housing portion; and a laminate portion in which insulating layers and conductor layers are alternately laminated on at least one of the upper and lower surfaces of the core material, wherein a gap between an inner circumferential portion of the housing portion and an outer circumferential portion of the component is filled with a resin filler, the inner circumferential portion of the housing portion has a cross-section where a first straight chamfered portion is formed at each corner of a rectangle in a plane direction, the outer circumferential portion of the component has a cross-section where a second straight chamfered portion is formed at each corner of a rectangle in the plane direction, at least the second chamfered portion has a chamfer length greater than a width of the gap between the first chamfered portion and the second chamfered portion, and the outer circumferential portion of the component has the plane shape where an arc-like rounded portion is formed at each end of a straight portion of the second chamfered portion.