Patent ID: 7576016
Filing Date: 2009-08-18
Classification: C23C,H01L

Abstract:
1. A process for manufacturing a semiconductor device where films are formed on a plurality of semiconductor substrates by ALD using a vertical batch processing machine, comprising at least depositing films on the plurality of semiconductor substrates by ALD by repeating twice or more a cycle of: (1) a first step of supplying a source gas into a reaction chamber at a lower pressure than an atmospheric pressure in the vertical batch processing machine in which the plurality of semiconductor substrates are disposed, (2) a second step of vacuum-purging the reaction chamber, (3) a third step of gas-purging the reaction chamber, and (4) a fourth step of supplying an oxide reactant gas into the reaction chamber, wherein the fourth step of supplying the reactant gas is divided into (4-1) a substep of supplying the oxide reactant gas into the reaction chamber, (4-2) a substep of vacuum-purging the reaction chamber, and (4-3) a substep of gas-purging the reaction chamber, wherein a cycle of substeps (4-1) to (4-3) is repeated once or more.