Patent ID: 8614502

Claim:
A three-dimensional semiconductor assembly board, comprising: a supporting board that includes a bump, a flange, a stiffener, an adhesive and a via hole, wherein (i) the bump is adjacent to and integral with the flange and extends from the flange in a first vertical direction, (ii) the flange extends laterally from the bump in lateral directions orthogonal to the first vertical direction, (iii) the via hole extends into the bump, and is laterally covered by a sidewall of the bump, (iv) the stiffener includes an aperture with the bump extending thereinto, and (v) the adhesive includes an opening with the bump extending thereinto, contacts the bump, the flange and the stiffener, is sandwiched between the bump and the stiffener and between the flange and the stiffener and extends laterally from the bump to peripheral edges of the assembly board; a built-in electronic device that includes a first contact pad and a second contact pad and extends into the via hole, wherein the first contact pad faces the first vertical direction and the second contact pad faces the second vertical direction; and a coreless build-up circuitry that extends from the built-in electronic device and the flange in the second vertical direction and includes a first dielectric layer, a first via opening and a first conductive trace, wherein the first via opening in the first dielectric layer is aligned with the second contact pad of the built-in electronic device, and the first conductive trace extends from the first dielectric layer in the second vertical direction and extends through the first via opening in the first vertical direction and directly contacts the second contact pad.