Patent ID: 8003482
Filing Date: 2011-08-23
Classification: G03F,H01L

Abstract:
1. A method of processing a semiconductor substrate in forming scribe line alignment marks, comprising: forming pitch multiplied non-circuitry features within scribe line area of a semiconductor substrate, individual of the features in cross-section having a maximum width which is less than a minimum photolithographic feature dimension used in lithographically patterning the substrate; depositing photoresist over the features; and patterning the photoresist to form photoresist blocks that are individually received between a respective pair of the features in the cross-section, individual of the features of the respective pairs having a laterally innermost sidewall in the cross-section, the patterning forming individual of the photoresist blocks to have an opposing pair of first pattern edges in the cross-section that are spaced laterally inward of the laterally innermost sidewalls of the respective pair of the features, the individual of the photoresist blocks having an opposing pair of second pattern edges in the cross-section that self-align laterally outward of the first pattern edges to the laterally innermost sidewalls of the features during the patterning.