Patent ID: 6258654
Filing Date: 2001-07-10
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device using a substrate body comprising a semiconductor substrate having a cell region for forming a memory cell portion and a circuit region for forming a peripheral circuit portion in which a diffusion layer is formed to the semiconductor substrate in the circuit region and an insulation film is formed on the semiconductor substrate, the method comprising the steps of:forming a peripheral circuit by:forming a connection hole to the insulation film in the circuit region for exposing the diffusion layer at the bottom,ion implanting impurities to the diffusion layer in the vicinity of the connection hole, andapplying a heat treatment for activating the impurities introduced to the diffusion layer; and thenforming a conduction portion to be joined with the diffusion layer to the conduction hole in the circuit region; andprocessing a cell region by forming a capacitor on the substrate body in the cell region and forming the dielectric film of the capacitor with a dielectric material that can be formed at a temperature lower than the temperature causing junction leak at a joined portion between the diffusion layer and the conductive portion.