Patent ID: 6475833
Filing Date: 2002-11-05
Classification: H01L

Abstract:
A method of making a flip chip assembly, comprising:providing a semiconductor chip including a terminal pad; providing a substrate including a dielectric layer and an electrically conductive trace, wherein the dielectric layer includes first and second surfaces that are opposite one another and a via hole that extends between the first and second surfaces, and the conductive trace is disposed on the first surface and bent proximate to a corner between the first surface and the via hole at a different angle than the corner and extends into the via hole; then attaching the second surface to the chip wherein the via hole is aligned with the terminal pad; then depositing an electrically conductive material into the via hole; and then applying energy to the electrically conductive material thereby transforming the electrically conductive material into a hardened connection joint on the conductive trace and the terminal pad, wherein the connection joint electrically connects the conductive trace and the terminal pad.