Patent ID: 7262138
Filing Date: 2007-08-28
Classification: H01L

Abstract:
1. A method for adjusting an etch rate of an organic bottom antireflective coating layer on a wafer, comprising: exposing the organic bottom antireflective coating layer to varied bake temperatures to determine a solubility of the organic bottom antireflective coating layer after baking at each of the varied bake temperatures; deducing an etch rate for the organic bottom antireflective coating layer based at least in part on information related to the solubility of the organic bottom antireflective coating layer after baking at each of the varied bake temperatures; determining an etch rate for a photoresist to be deposited over the organic bottom antireflective coating layer; and adjusting a temperature at which the organic bottom antireflective coating layer is baked during manufacture to align the etch rate of the organic bottom antireflective coating layer with the etch rate of the photoresist.