Patent ID: 8034179
Filing Date: 2011-10-11
Classification: C23C,H01L

Abstract:
1. A method for forming an insulating film comprising: oxidizing silicon exposed on a surface of a substrate with plasma of process gas containing noble gas and oxygen gas (O forming a second insulating film on the silicon oxide film using a CVD process; and modifying the second insulating film using plasma of a process gas containing noble gas and oxygen gas, and wherein the oxidizing step uses plasma that has a relatively higher density of O wherein the modifying step uses plasma that has a relatively higher density of O wherein the oxidizing step is conducted with a plasma processing apparatus that introduces microwave to a process chamber with a plane antenna having a plurality of holes, and the plasma processing apparatus has a process pressure in the range of 6.7 Pa and 267 Pa, and the flow rate ratio of the oxygen gas over an entire process gas ranges from 0.1% to 30%, wherein the modifying step is conducted at a process pressure range of 6.7 Pa and 267 Pa, and the flow rate ratio of the oxygen gas over an entire process gas ranges from 0.1% to 30%, and wherein the modifying step is conducted by a plasma processing apparatus that introduces microwave to a process chamber with a plane antenna having a plurality of holes.