Patent ID: 6177701
Filing Date: 2001-01-23
Classification: H01L

Abstract:
A semiconductor device comprising:(a) a semiconductor substrate having a conductive region;(b) an insulating layer formed to cover said conductive region;said insulating layer having a contact hole formed to penetrate said insulating layer;said conductive region being exposed from said insulating layer in said contact hole;(c) a semiconductor plug formed in said contact hole to bury said contact hole;said plug being doped with an impurity;the bottom of said plug being contacted with said conductive region;(d) a conductive barrier layer selectively formed to cover the top of said plug;said barrier layer being contacted with the top of said plug;(e) a conductive wiring layer selectively formed on and contacted with said barrier layer;wherein said semiconductor plug serves as a resistor; andwherein said plug has a resistance equal to or less than (1/10) of a contact resistance of said plug with said barrier layer.