Patent ID: 7452734
Filing Date: 2008-11-18
Classification: G01R,H01L

Abstract:
1. A method of making a monitoring pattern of a shallow trench isolation profile, comprising: forming a first pattern on a substrate to monitor a depth of a first shallow trench isolation, and wherein the first pattern includes a plurality of active regions on the substrate, wherein distances between the plurality of active regions are unequally spaced, wherein active regions of the plurality of active regions are of the same size; and forming a second pattern on the substrate to measure electrical effects associated with a depth and a profile of a second shallow trench isolation, wherein the second pattern includes a plurality of equally spaced active regions on the substrate, a plurality of contact regions that electrically connect the equally spaced active regions, and a plurality of gates that are formed on the equally spaced active regions, wherein the gates do not contact the first pattern.