Renesas Technology Corp.

Gen Kawaharada

Masakazu Taki

Minoru Hanazaki

Mutsumi Tsuda

Kazuyuki Fujii

In remote plasma cleaning, it is difficult to locally excite a plasma because the condition is not suitable for plasma excitation different from that at the time of film formation and a method using light has a problem of fogginess of a detection window that cannot be avoided in a CVD process and is not suitable for a mass production process. In order to solve these problems, the outline of the present invention is a manufacturing method of a semiconductor integrated circuit device in which a step of depositing a desired film by exciting a reaction gas using a plasma in a reaction chamber and a step of introducing a cleaning gas excited in a remote plasma excitation chamber into the reaction chamber and performing remote plasma cleaning of the reaction chamber in an atmosphere without plasma excitation are repeated, wherein a local plasma is generated in the reaction chamber or a vacuum system for evacuating the reaction chamber by a plasma excitation system of capacitively coupled type and the end point of the remote plasma cleaning is detected by monitoring the electrical characteristic of the plasma.

Growing community of inventors

Tokyo, Japan

Gen Kawaharada