Patent ID: 7736959
Filing Date: 2010-06-15
Classification: H01L

Abstract:
1. A method of manufacturing an integrated circuit device on or from an SOI wafer having a semiconductor layer disposed on an insulating layer, wherein the integrated circuit device includes a logic section, including a plurality of transistors, and a memory section, including a plurality of memory cells wherein each memory cell comprises a transistor and wherein the plurality of transistors of the logic section and the transistor of each memory cell of the memory section include body regions, the method comprising: forming a plurality of semiconductor pieces in or from the semiconductor layer of the SOI wafer associated with the logic section, wherein each semiconductor piece includes a plurality of surfaces; forming a plurality of semiconductor pieces in or from the semiconductor layer of the SOI wafer associated with the memory section, wherein each semiconductor piece includes a plurality of surfaces; providing a dielectric material on the plurality of surfaces of the semiconductor pieces of the SOI wafer associated with the memory and logic sections; providing a conductive material above the dielectric material; doping the body regions of the transistors of the logic section with impurities; doping the body region of the transistor of each memory cell of the memory section with the impurities; wherein impurity doping levels in the body regions of the transistors of the logic section are different from impurity doping levels in the body region of the transistor of each memory cell of the memory section: providing a plurality of gates and associated gate dielectrics of each transistor of the memory cells of the memory section and each transistor of the logic section from the conductive material and the dielectric material, respectively; and providing source and drain regions of each transistor of the memory cells of the memory section and the transistors of the logic section in the respective semiconductor pieces of the SOI wafer.