Patent ID: 6281537
Filing Date: 2001-08-28
Classification: H01L

Abstract:
A capacitor in a semiconductor device comprising:a first conducting film filling an opening which is formed in an interlayer insulating film, being in contact with an active region of a semiconductor;a first stacked structure including a second conducting film formed on the first conducting film and an interlayer insulating film, a first diffusion preventing film formed on the second conducting film, a lower electrode film formed on the first diffusion preventing film;a second stacked structure including a ferroelectric film formed on the lower electrode film and an upper electrode film formed on the ferroelectric film;an insulating spacer film formed on sidewall of the second stacked structure;a conducting spacer film formed on sidewall of the first stacked structure and the insulating spacer film; anda second diffusion preventing film formed on sidewalls of the insulating spacer film and the conducting spacer film.