Patent ID: 9134367
Filing Date: 2015-09-15
Classification: B06B,C12Q,G01N,G01R,H01L

Abstract:
1. A sensing structure for use in testing integrated circuits on a substrate, the sensing structure comprising: at least a first sensing region, a second sensing region, and a third sensing region, wherein all the sensing regions are connectable to a probe, wherein the sensing regions at least partially surround a probing area adapted to substantially correspond to a conductive region for connecting to the integrated circuits; a first sensing element having a first terminal directly connected to the first sensing region, and having a second terminal directly connected to the second sensing region; and a second sensing element having a third terminal directly connected to the second sensing region, and having a fourth terminal directly connected to the third sensing region; wherein each sensing region has a different value of an electrical parameter measurable between said sensing region and a first reference potential so as to determine a drift direction of the probe.