Sensitized chemically amplified photoresist for use in photomask fabrication and semiconductor processing
AssigneeApplied Materials, Inc.
InventorsMelvin W. Montgomery, Christopher Hamaker
Life of this patent
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Abstract
The disclosure pertains to a photoresist composition and a method of using the photoresist in the fabrication of reticles or features on a semiconductor substrate. The photoresist composition and the method are designed to reduce the variation in critical dimension of features across a surface of a substrate, where the variation in critical dimension is a result of localized resist loading. The photoresist composition is useful when the imaging system is G-line, H-line, or I-line, and the photoresist composition includes a sensitizer which works in combination with a DUV photoresist including a PAC, to sensitize the photoresist to the G-line, H-line and I-line imaging.
Claims12
A method of reducing optical proximity effects in a patterned photoresist which includes dense and isolated features, comprising:
- adding to a DUV photoresist a sensitizer which functions with said DUV photoersist to enable the use of imaging radiation having a wavelength ranging from about 364 nm to about 436 nm.
Dependencies are inferred from the claim text.