Patent ID: 7149667
Filing Date: 2006-12-12
Classification: G06F,H01J

Abstract:
1. A method for calculating ion distribution in a crystalline member in the case of implanting ions in the member more than one time, the method comprising: a step of inputting conditions of ion implantation via an input device; an ion distribution specification step for obtaining existing ion distribution data by adding ion distribution in an amorphous area and ion distribution in a channeling area, the existing ion distribution data representing existing ion distribution which has been created by performing ion implantation n (n is a natural number) times; an ion distribution assumption step for obtaining assumed ion distribution data by adding ion distribution in the amorphous area and ion distribution in the channeling area, the assumed ion distribution data representing assumed ion distribution which will be created by an (n+1)th ion implantation; a differential calculation step for calculating differential between the assumed ion distribution, which will be created by the (n+1)th ion implantation and which is assumed by the ion distribution assumption step, and the existing ion distribution specified by the ion distribution specification step; an ion distribution calculation step for calculating ion distribution created by the (n+1)th ion implantation by calculating the dose of ions implanted by the (n+1)th ion implantation from the differential calculated by the differential calculation step; a step for storing on a hard disk drive data resulted from the calculation of the ion distribution created by the (n+1)th ion implantation; and a step for converting the data into a video signal and outputting the video signal to a display device.