Patent ID: 7358184
Filing Date: 2008-04-15
Classification: H01L,H05K

Abstract:
1. A method of forming a conductive via plug which replaces the deposition-lithography-etching process, and forms a via hole by etching an insulating layer and removing solvent to form a conductive via plug by an inkjet method, comprising the steps of: providing a substrate; forming a gate over said substrate, wherein the gate is formed by using a tetrachloro-palladate solution; forming an insulating layer over said substrate and said gate; printing a solution comprising a solvent and a conductive material on an upper surface of said insulating layer by an inkjet method and forming a via hole by etching said insulating layer to expose said gate by said solvent; removing said solvent to form a conductive via plug by depositing said conductive material; and forming a source and a drain and coating a semiconductor material over said insulating layer and said conductive via plug serving as an electrical connection respectively between said gate and said source and between said gate and said drain.