Patent ID: 6066536
Filing Date: 2000-05-23
Classification: H01G,H01L

Abstract:
A method for manufacturing a variable capacitor, said method comprising the steps of:forming a first storage electrode on a substrate;forming a first dielectric layer on said first storage electrode and said substrate;forming a first sacrificial layer on said first dielectric layer;removing a portion of said first sacrificial layer to form a dielectric region over said first storage electrode;forming a second dielectric layer on said first sacrificial layer and said first dielectric layer;removing a portion of said second dielectric layer to form a pair of contact channels to said first sacrificial layer;forming a second sacrificial layer over said first sacrificial layer within said pair of contact channels and on said second dielectric layer;removing a portion of said second sacrificial layer for leaving a portion of said second sacrificial layer within said pair of contact channels of said second sacrificial layer;forming a second conductive layer on said second sacrificial layer and said second dielectric layer;removing a portion of said second conductive layer for forming a third sacrificial layer, a second storage electrode, and a resistor pattern;forming a passivation layer on said third sacrificial layer, said second storage electrode, said resistor pattern, and said second dielectric layer;removing a portion of said passivation layer to expose said third sacrificial layer; andremoving said third sacrificial layer, said second sacrificial layer, and said first sacrificial layer for having a dielectric space between said first dielectric layer and said second dielectric layer.