Patent ID: 9224712
Filing Date: 2015-12-29
Classification: B23K,H01L

Abstract:
1. A bonding method comprising: inserting an interposer structure into a vacuum distribution plate, wherein said vacuum distribution plate has a planar contact surface; applying a vacuum to a first assembly of said interposer structure and said vacuum distribution plate, wherein said vacuum applies a force to said interposer structure so that said interposer structure is conformed to said planar contact surface of said vacuum distribution plate, wherein conforming said interposer structure to said planar contact surface of said vacuum distribution plate removes a curvature from said interposer structure; tacking a semiconductor chip to a surface of said interposer structure that is opposite a surface of said interposer structure that is in contact with said planar contact surface of said vacuum distribution plate; contacting a second assembly of said interposer structure and said semiconductor chip to a substrate; and applying a furnace reflow process to said second assembly to bond said second assembly to said substrate.