Imaging method for vapor deposited photoresists of anionically p

Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Making electrical device

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430325, 430330, 430331, 430396, G03C 500, G03C 504

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046752706

ABSTRACT:
A method for imaging vapor deposited photoresists of cyanoacrylates or related anionically polymerizable monomers without the use of solvent development. This method consists of treating the substrate with a compound which releases acid when exposed to high-energy radiation. In certain cases when the surface of the substrate is slightly acidic or neutral, it is necessary to activate the surface with a basic liquid or vapor which must be chosen so as not to react with the radiation-sensitive acid precursor. The substrate is exposed to actinic or ionizing radiation through a mask or to steered high-energy beams. Finally, the substrate is exposed to a vapor of cyanoacrylate monomer which condenses and polymerizes on the unirradiated regions forming a relief image.

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