Patent ID: 8623738
Filing Date: 2014-01-07
Classification: H01L

Abstract:
1. A fabrication method of the capacitor structure, comprising: providing a substrate, comprising at least one capacitor disposing region defined thereon, wherein a supporting region is defined on a portion of the substrate where no capacitor disposing region is located; forming a first sacrificial layer on the substrate; removing the first sacrificial layer located in the supporting region, so that the first sacrificial layer located in each capacitor disposing region forms a sacrificial cylinder; forming a supporting layer conformally on the surface of the substrate and each said sacrificial cylinder; forming a second sacrificial layer on the supporting layer; removing each said sacrificial cylinder, the supporting layer on the sacrificial cylinder and the second sacrificial layer on the supporting layer, so that the supporting layer forms a supporting structure on the substrate, wherein the supporting structure comprises at least one vertical hollow cylinder and a horizontal supporting layer connected to the vertical hollow cylinder; and forming a capacitor structure on the interior surface of a vertical hollow cylinder.