Patent ID: 11937419
Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A forming method of a semiconductor device, wherein the forming method comprises:
providing a substrate;
forming a plurality of conductive contact plugs which are arranged at intervals on the substrate, wherein the conductive contact plugs comprise a plurality of first conductive contact plugs and a second conductive contact plug;
forming a capacitor array, the capacitor array comprising a plurality of columnar capacitors which are arranged at intervals, each of the columnar capacitors being formed on a respective one of the first conductive contact plugs, and a lower electrode layer of the columnar capacitor being in contact connection with the respective one of the first conductive contact plugs; and
forming a supporting structure, the supporting structure being formed on the substrate at an edge of the capacitor array and surrounding the capacitor array, a bottom of the supporting structure being in contact with the second conductive contact plug, a spacing between an inner wall and an outer wall of the supporting structure on any cross section parallel to the substrate being greater than an aperture of a capacitor hole of any one of the columnar capacitors on the cross section, the inner wall and the outer wall of the supporting structure being of conductive materials and a dielectric material filling up the spacing between the inner wall and the outer wall of the supporting structure.