Patent ID: 9059088
Filing Date: 2015-06-16
Classification: H01L,H05K

Abstract:
1. An electronic component built-in substrate, comprising: a lower wiring substrate; an electronic component mounted on the lower wiring substrate; an intermediate wiring substrate including an opening portion in which the electronic component is mounted, and arranged in a periphery of the electronic component, and connected to the lower wiring substrate via a first conductive ball; an upper wiring substrate arranged over the electronic component and the intermediate wiring substrate, and connected to the intermediate wiring substrate via a second conductive ball; and a resin filled into respective areas between the lower wiring substrate, the intermediate wiring substrate, and the upper wiring substrate, and sealing the electronic component, wherein the first conductive ball and the second conductive ball are arranged in displaced positions mutually, and the first conductive ball and the second conductive ball are arranged in positions that are not overlapped mutually, when viewed from a top.