摘要 |
The present inventors have found that a wafer process of VLSI (Very Large Scale Integration) has the following problem, that is, generation of foreign matters due to moisture from a wafer as a result of degassing when a barrier metal film or a first-level metal interconnect layer is formed by sputtering as a preliminary step for the formation of a tungsten plug in a pre-metal step. To overcome the problem, the present invention provides a manufacturing method of a semiconductor integrated circuit device including, in a plasma process, in-situ monitoring of moisture in a processing chamber by receiving an electromagnetic wave generated from plasma.
|