Patent ID: 7030031
Filing Date: 2006-04-18
Classification: H01L

Abstract:
1. A method for forming an etched pattern on a semiconductor substrate, the method comprising the steps of: depositing a thin film on the substrate; depositing a layer of planarizing material on the thin film; depositing a layer of barrier material that substantially blocks impurity diffusion from an underlying interlevel dielectric into an imaging material on the layer of planarizing material; depositing a layer of anti-reflective coating on the layer of barrier material; depositing at least one layer of imaging material on the layer of barrier material; forming at least one first pattern shape in the layers of imaging material, barrier material, anti-reflective coating and planarizing material; removing the imaging material, either after or concurrently with forming the first pattern shape in the planarizing material; removing the anti-reflective coating, either after or concurrently with forming the first pattern shape in the planarizing material; and transferring the first pattern shape to the thin film.