Abstract:
PROBLEM TO BE SOLVED: To provide an SRAM memory and a microprocessor, comprising a logic portion formed on a silicon substrate and an SRAM array portion. SOLUTION: The SRAM array has a body region, where at least one pair of neighboring NFETs of the SRAM cell is linked in a leakage path diffusion region 338 under shallow source/drain region 334, the leakage path diffusion region extends from the bottom of the source/drain diffusion to an embedded oxide layer 320; and at least one pair of PFETs of the neighboring SRAM cells has a body region 336, linked in a similar leakage path diffusion region under neighboring source/drain diffusion. The logic circuit portion of the microprocessor has a floating body region and an NFET, formed in a crystal orientation SOI silicon region 330 and a PFET formed in a crystal orientation bulk silicon region, and the SRAM memory portion has an NFET, formed in the crystal orientation SOI silicon region and a PFET formed in the crystal orientation silicon region. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To form performance interconnection circuit having a high dimension of sub-half micron having enhanced processing yield and reliability by a method wherein a multilayered interconnection of a copper wire separated from each other by a dielectric insulation is formed, and a contact part with an electrical mechanism in a substrate is formed. SOLUTION: A thin layer 7 of an element, capable of forming a compound between copper and a metal which preferably has a thickness of about 100 to 600 angstroms is adhered to an arbitrarily selected layer 6, and thereafter a thin copper seed layer 8 of a thickness of about 600 to 2000 angstroms is typically stacked. A remaining copper layer 9 is electrically plated after the copper seed layer 8 to bury a groove, or the layer 8, or the layer 8 and the layer 9, may be stacked by a CVD method. Next, this substrate wafer is polished by a chemical mechanical method and all extra metals are removed from a region in which a pattern is not drawn to thereby make a flat structure.
Abstract:
A method of providing sub-half-micron copper interconnections with improved electromigration and corrosion resistance. The method includes double damascene using electroplated copper, where the seed layer is deposited by chemical vapor deposition, or by physical vapor deposition in a layer less than about 800 angstroms.
Abstract:
A method of providing sub-half-micron copper interconnections with improved electromigration and corrosion resistance. The method includes double damascene using electroplated copper, where the seed layer is deposited by chemical vapor deposition, or by physical vapor deposition in a layer less than about 800 angstroms.