Patent ID: 8901435

Claim:
A hybrid wiring board with a built-in stopper, comprising: an interposer that includes a first contact pad and a second contact pad on two opposite surfaces thereof, wherein the first contact pad faces a first vertical direction and the second contact pad faces a second vertical direction opposite the first vertical direction; the stopper that serves as a placement guide for the interposer and is in close proximity to and laterally aligned with and laterally extends beyond peripheral edges of the interposer in lateral directions orthogonal to the vertical directions; a stiffener that includes an aperture with the interposer and the stopper extending thereinto; a build-up circuitry that covers the stopper, the interposer and the stiffener in the first 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 first contact pad of the interposer, and the first conductive trace extends from the first dielectric layer in the first vertical direction and extends through the first via opening in the second vertical direction and directly contacts the first contact pad; and an adhesive that contacts and is sandwiched between the interposer and the build-up circuitry and between the stiffener and the build-up circuitry.