Patent ID: 6730610
Filing Date: 2004-05-04
Classification: H01L

Abstract:
A method for forming a pair of patterned layers comprising:providing a substrate having a first region laterally adjacent a second region; forming over the substrate a uniform thickness blanket target layer which covers the first region and the second region; forming over the uniform thickness blanket target layer a first patterned etch mask layer having a first thickness over the first region and a second patterned etch mask layer having a second thickness different from the first thickness over the second region; and etching the blanket target layer to form a first patterned target layer over the first region and a second patterned target layer over the second region, wherein the first thickness and the second thickness are adjusted such as to optimize a first linewidth of the first patterned target layer and a second linewidth of the second patterned target layer.