Patent ID: 8569107
Filing Date: 2013-10-29
Classification: G03F,H01L

Abstract:
1. A method of manufacturing a semiconductor device having a semiconductor substrate including a scribe region and a product region, comprising steps: (a) forming, in the semiconductor substrate, grooves defining a first dummy pattern, a plurality of second dummy patterns and an active region, wherein the active region is configured to function as a part of a semiconductor element; (b) forming a first insulating film over the semiconductor substrate including the grooves; (c) embedding the first insulating film into at least one of the grooves by polishing the first insulating film formed outside of the groove; (d) forming a conductive film over the semiconductor substrate; (e) forming a target pattern, which is configured to be used for optical pattern recognition patterning, and forming dummy gate electrodes over the scribe region by patterning the conductive film; (f) after the step (e), forming a mask in the product region by performing alignment by using the target pattern, wherein the active region is formed in the product region, wherein the first dummy pattern, the second dummy patterns, the target pattern and the dummy gate electrodes are formed in the scribe region, wherein the second dummy patterns are arranged adjacent the first dummy pattern, wherein a width of each of the second dummy patterns is larger than a width of the first dummy pattern, wherein each of the second dummy patterns is arranged regularly in the scribe region, wherein the target pattern is arranged over the first dummy pattern, wherein each of the dummy gates is arranged with a same pitch relative to adjacent ones of said dummy gates, and wherein, in a first direction and a second direction perpendicular to the first direction, each of the dummy gates and each of the second dummy patterns are shifted with a half distance of the pitch of the second dummy patterns.