Patent ID: 9152751
Filing Date: 2015-10-06
Classification: G06F,H01L

Abstract:
1. A method comprising: determining an effective current pulse width of a maximum peak based on a waveform function of a current having multiple peaks within a waveform period in a metal segment of a metal line in at least one design file of a semiconductor device to compute a duty ratio between the effective current pulse width and the waveform period; determining a maximum direct current limit of the metal segment according to physical characteristics of the metal segment; determining an alternating current electromigration (AC EM) current limit according to a ratio between the maximum direct current limit and a function of the duty ratio; including the metal segment with the physical characteristics in the at least one design file when the maximum peak of the current does not exceed the AC EM current limit; and fabricating the semiconductor device according to the at least one design file.