Patent ID: 6538293
Filing Date: 2003-03-25
Classification: H01L,Y10S

Abstract:
A semiconductor integrated circuit device comprising:a first MISFET, a first capacitive element and a second capacitive element each having a first gate insulating film and a first gate electrode formed on said first gate insulating film, wherein said first capacitive element is provided in a circuit, and wherein said second capacitive element is provided as a capacitor for stabilizing a power-supply voltage; and a second MISFET having a second gate insulating film which has a thickness less than that of said first gate insulating film, wherein said first gate insulating film of said first capacitive element is formed on a first well region formed in a semiconductor substrate such that said first well region serves as one of two electrodes of said first capacitive element, wherein said first gate electrode of said first capacitive element serves as the other of said two electrodes of said first capacitive element, wherein said first gate insulating film of said second capacitive element is formed on a second well region formed in said semiconductor substrate such that said second well region serves as one of two electrodes of said second capacitive element, and wherein said first gate electrode of said second capacitive element serves as the other of said two electrodes of said second capacitive element.