Invention Grant
US08728710B2 Photo-imageable hardmask with dual tones for microphotolithography 有权
用于显微光刻的具有双色调的可光成像硬掩模

Photo-imageable hardmask with dual tones for microphotolithography
Abstract:
Disclosed is a method of making polysiloxane and polysilsesquioxane based hardmask respond to radiations with positive tone and negative tone simultaneously. Unradiated films are insoluble in developers, showing positivity tone. Radiated films are insoluble in developers as well, showing negative tone. Only half-way radiated films are soluble in developers. The dual-tone photo-imageable hardmask produces splitted patterns. Compositions of dual-tone photo-imageable hardmask based on the chemistry of polysiloxane and polysilsesquioxanes are disclosed as well. Further disclosed are processes of using photo-imageable hardmasks to create precursor structures on semiconductor substrates with or without an intermediate layer.
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