Patent ID: 7595261
Filing Date: 2009-09-29
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device, which has a gate electrode and a pair of diffusion layers formed in a semiconductor substrate on sides of the gate electrode, comprising: forming an insulating film and a gate electrode on a semiconductor substrate of a given wafer including a step of forming an insulating layer over the semiconductor substrate and subsequently removing the insulating layer by impacting ionized etching gases on the insulating layer and semiconductor substrate; obtaining, separately for each wafer, a thickness value of an affected layer formed in a surface of the semiconductor substrate, the affected layer having been created when the ionized etching gasses for removing the insulating layer were impacted into the semiconductor substrate; forming a pair of diffusion layers by injecting an impurity element into the semiconductor substrate in areas flanking the gate electrodes based on a controlled injection parameter; performing heat activation for the injected impurity element based on a controlled heat activation parameter; and a parameter deriving step provided between said obtaining a thickness value of an affected layer and said forming a pair of diffusion layers, said parameter deriving step deriving the controlled injection parameter separately for each wafer in response to the obtained thickness value of the affected layer.