Patent ID: 6897140
Filing Date: 2005-05-24
Classification: B82Y,G03F,Y10S

Abstract:
1. A lithography method for fabricating on a substrate structures of etch-resistant metal/semiconductor compound, comprising: depositing on the substrate superposed layers of metal and semiconductor capable of reacting with each other to form the etch-resistant metal/semiconductor compound; producing radiation through a radiation source; interposing between the radiation source and the superposed metal and semiconductor layers a mask defining radiation-absorbing patterns; propagating the radiation from the source to the mask where the patterns absorb radiation and, therefore, said patterns are imparted to said radiation; and propagating the patterned radiation from the mask to the superposed metal and semiconductor layers where energy of said patterned radiation is absorbed locally by the metal and semiconductor layers to (a) induce the reaction between the metal and semiconductor responsible for the formation of etch-resistant metal/semiconductor compound, and (b) thereby produce the structures of etch-resistant metal/semiconductor compound corresponding to the patterns imparted to said radiation.