Patent ID: 9627469
Date: 2017-04-18
CPC Classifications: H01L

Claim:
1. A method of manufacturing an integrated circuit (IC) device, the method comprising: forming a doped mold film on a substrate having a conductive region while continuously varying a flow rate of at least one dopant source supplied to the substrate, the doped mold film having a dopant concentration gradient which continuously varies in a thickness direction of the doped mold film; forming a capping mold film on the doped mold film; forming a support film on the capping mold film; forming a hole in the support film, the capping mold film, and the doped mold film by etching the support film, the capping mold film, and the doped mold film, the hole exposing the conductive region; and forming an electrode within the hole, the electrode having an outer sidewall facing a sidewall of the support film, a sidewall of the capping mold film, and a sidewall of the doped mold film, each of which is exposed within the hole.