Patent ID: 6140229
Filing Date: 2000-10-31
Classification: H01L,Y10S

Abstract:
A method of producing a semiconductor device having at least a compound film containing a nitrogen, wherein said compound film containing nitrogen is formed under conditions where the ratio of the flow rates of the nitrogen with respect to an inert gas is 0.125 to 1.0, wherein a step of electrically connecting an interconnection layer and semiconductor of said semiconductor device through a contact portion is included and at least said compound film containing nitrogen is formed as an underlying film arranged between said interconnection layer and semiconductor, wherein as said underlying film, a Ti film in contact with the semiconductor, a first TiN film laminated on this Ti film, and a second TiN film which is laminated on this first TiN film and has different characteristics from those of the first TiN film are formed, and wherein the ratio of the flow rates of the nitrogen gas with respect to the inert gas is changed when continuously forming said first TiN film and said second TiN film by the reactive sputtering.