Patent ID: 8980418
Filing Date: 2015-03-17
Classification: B81C,B82Y,G03F,H01L,Y10T

Abstract:
1. A modified organic resist mask layer having an increased resistance to plasma etching or ion milling in response to transferring at least one patterned feature to a substrate material by plasma etching or ion milling, comprising: an organic resist material disposed over the substrate material and including at least one patterned feature; and an inorganic protective etch component, comprising a metal or a metal oxide selected from the group consisting of aluminum oxide, titanium dioxide, zinc oxide, silicon dioxide, hafnium dioxide, zirconium dioxide, and tungsten, disposed over at least a portion of the surface of the organic resist material and within at least a portion of the organic resist material to a predetermined infiltration depth within the organic resist material forming a modified resist material, wherein the plasma etch resistance of the organic resist mask layer is selectively controllable by establishing the infiltration depth of the inorganic protective etch component such that the at least one patterned feature has a high aspect ratio.