Patent ID: 8980710
Filing Date: 2015-03-17
Classification: H01L

Abstract:
1. A manufacturing method of a semiconductor device, comprising: forming an impurity layer in a semiconductor substrate, that includes a first region and a second region, of the first region; epitaxially growing a silicon layer on the semiconductor substrate of the first region and the second region after forming the impurity layer; forming a first silicon oxide film and a silicon nitride film above the semiconductor substrate after epitaxially growing the silicon layer; independently introducing oxygen and hydrogen into an oxidation furnace in a reduced pressure state and exposing the silicon nitride film to active species of the oxygen and active species of the hydrogen to oxidize the silicon nitride film to form a second silicon oxide film on the silicon nitride film; forming a first gate insulating film on the silicon layer of the first region; forming a first conductor layer on the second silicon oxide film and on the first gate insulating film; patterning the first conductor layer, the second silicon oxide film, the silicon nitride film and the first silicon oxide film and forming a stack gate of a nonvolatile memory transistor above the second region; and patterning the first conductor layer above the first region and forming a gate electrode of an MIS-type transistor.