Patent ID: 7196006
Filing Date: 2007-03-27
Classification: H01L

Abstract:
1. A method of manufacturing a microelectronic device, comprising: performing a first inspection of a device feature during an intermediate stage of manufacture; cleaning the device feature after the first inspection; and performing a second inspection of the device feature after cleaning the device feature, wherein the device feature is located in a production region of a wafer, the wafer further including a calibration region having a calibration feature located therein; wherein the calibration feature comprises a first conductive layer located over the wafer, a buffer layer located over the first conductive layer, and a second conductive layer located over the buffer layer; wherein the first conductive layer comprises AlCu; and wherein the buffer layer comprises a first TiN layer over the first conductive layer, an implanted Ti layer over the first TiN layer, and a second TiN layer over the implanted Ti layer.