Patent ID: 6030893
Filing Date: 2000-02-29
Classification: C23C,H01L

Abstract:
A chemical vapor deposition of tungsten (W-CVD) process for growing low stress and void free interconnect, the method comprising:forming a dielectric layer on a substrate, said substrate having a conductive area, said dielectric layer covering said conductive area;forming a hole through said dielectric layer to uncover at least a portion of said conductive area;forming a first conductive layer with a thickness of about 500 to 9000 .ANG. on said dielectric layer and completely filling in said hole, wherein said first conductive layer is formed in a first chamber; andforming a second conductive layer on said first conductive layer, wherein said second conductive layer is formed in a second chamber, wherein the temperature of said second chamber is different from the temperature of said first chamber.