Patent ID: 9196592
Filing Date: 2015-11-24
Classification: H01L

Abstract:
1. A method comprising: forming an integrated circuit (IC) wafer including a wafer kerf region, the wafer kerf region having a metal density of less than approximately 0.5 percent relative to a total density of the wafer kerf region, the forming of the IC wafer including: forming a wafer substrate; forming a process region over the wafer substrate, the process region containing the metal density of less than approximately 0.5 percent relative to the total density of the wafer kerf region; forming at least one copper wire within the process region, the at least one copper wire having a thickness of at least approximately 3 microns as measured along an axis of dicing of the wafer kerf region; and forming at least one aluminum wire within the process region, the at least one aluminum wire having a thickness of at least 4 microns as measured along the axis of dicing of the wafer kerf region.