Patent ID: 6479853
Filing Date: 2002-11-12
Classification: H01L

Abstract:
A semiconductor device, comprising:a substrate, including first and second diffusion regions at first and second cross-sections, respectively; an insulation layer covering said first and second diffusion regions; a first conductor at said first cross-section formed on said insulation layer over said first diffusion region and connected to said first diffusion region through a first contact hole formed in said insulation layer; a second conductor at said second cross-section formed on said insulation layer over said second diffusion region and connected to said second diffusion region through a second contact hole formed in said insulation layer; and first and second film spacers of at least one of BPSG and PSG formed respectively in said first and second contact holes at said first and second cross-sections, respectively, wherein a concentration of impurity dopant of one of said first and second film spacers is lower than that of the other and wherein said first and second cross-sections are different from each other.