Patent ID: 6869750
Filing Date: 2005-03-22
Classification: H01L,H05K,Y10T

Abstract:
1. A method for forming a plurality of conductive posts employing a single lithographic step for each build up layer comprising: forming a first plurality of conductive posts on first and second sides of a circuitized core structure, each conductive post having an end proximate to the core structure and an end distal to the core structure; depositing a first dielectric layer on the first side of the core structure, comprising the step of laminating a composite to the first side of the core structure, wherein the composite comprises a carrier layer and the first dielectric layer; depositing a second dielectric layer on the second side of the core structure; removing dielectric layer material from the distal ends of the first plurality of conductive posts; and forming a second plurality of conductive posts on the distal ends of the first plurality of conductive posts.