Patent ID: 6187659
Filing Date: 2001-02-13
Classification: H01L

Abstract:
A method for forming contact nodes in semiconductor devices, said contact nodes having a lower layer and an upper layer, comprising the steps of:providing a semiconductor substrate;creating partially completed structures on the surface of said substrate;creating said lower layer of said contact nodes by depositing a first layer of polysilicon over said partially completed structure thereby including said contact openings within said partially completed structure, by depositing a second polysilicon over said first layer of polysilicon, by performing a Rapid Thermal Anneal to said first layer and said second layer of polysilicon and by removing said second of polysilicon, partially removing said first layer of polysilicon, creating said lower layer of said contact node, creating a plane of intersection between said lower layer and said upper layer of said contact node; andcreating said upper layer of said contact node.