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Multi-layer semiconductor integrated circuits enabling stabilizing photolithography process parameters, the photomask being used, and the manufacturing method thereof

Image Number 5 for United States Patent #7241558.

Stabilization of photolithography process parameters, the photomask being used, and the manufacturing method thereof is provided where a formal pattern layout is combined with a dummy pattern. A photomask is manufactured by utilizing the combined pattern layout so that density changes between the pattern structure layers of the multi-layer semiconductor integrated circuits are minimized.

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