Multilayer low reflectivity hard mask and process therefor
A method utilizing a multilayer anti-reflective coating layer structure can achieve low reflectivity at high numerical apertures. The multilayer anti-reflective coating structure can be utilized as a hard mask forming various integrated circuit structures. A multilayer anti-reflective coating struct...
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Main Authors | , , , |
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Format | Patent |
Language | English |
Published |
13.11.2012
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Subjects | |
Online Access | Get full text |
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Summary: | A method utilizing a multilayer anti-reflective coating layer structure can achieve low reflectivity at high numerical apertures. The multilayer anti-reflective coating structure can be utilized as a hard mask forming various integrated circuit structures. A multilayer anti-reflective coating structure can be utilized to form gate stacks comprised of polysilicon and a dielectric layer. A photoresist is applied above the multilayer anti-reflective coating which can include silicon oxynitride (SiON) and silicon rich nitride (SiRN). |
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Bibliography: | Application Number: US201113283076 |