Patent ID: 6121650
Filing Date: 2000-09-19
Classification: H01L

Abstract:
A semiconductor device comprising:a gate electrode formed of a conductive material on a semiconductor substrate of one conductivity type with a gate insulating film therebetween;first and second diffusion regions of another conductivity type formed on said semiconductor substrate so as to sandwich said gate electrode; anda contact hole for electrically connecting one of said first and second diffusion regions to a lower electrode of a cell capacitor for storing charge therein,wherein said semiconductor device has a characteristic that when a reverse voltage Vrev is applied as a junction application voltage between semiconductors of different conductivity types of said first diffusion region and said semiconductor substrate, a leakage current Ileak flows between said first diffusion region and said semiconductor substrate, and said junction application voltage Vrev when the leakage current Ileak isIleak=Cs.times.(Vbit/2).times.(1/T).times.(1/S),is three times or higher than a voltage Vbit applied to a data line connected to the other of said first and second diffusion regions at room temperature.