OPPORTUNISTIC PLACEMENT OF IC TEST STRUCTURES AND/OR E-BEAM TARGET PADS IN AREAS OTHERWISE USED FOR FILLER CELLS, TAP CELLS, DECAP CELLS, SCRIBE LINES, AND/OR DUMMY FILL, AS WELL AS PRODUCT IC CHIPS CONTAINING SAME

摘要

Product ICs/wafers include additional diagnostic, test, or monitoring structures opportunistically placed in filler cell positions, within tap cells, within decap cells, within scribe line areas, and/or within dummy fill regions. Improved fabrication processes utilize data from such structure (s) in wafer disposition decisions, rework decisions, process control, yield learning, or fault diagnosis.