Method of optical lithography with super resolution and projecti

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

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2504921, 355 53, 355 71, G03C 500

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054361141

ABSTRACT:
It is possible to improve the resolution of a formed pattern by utilizing anti-dissolution surface treatment of a photoresist layer and super resolution of an optical system, thereby to print a finer pattern having a narrower width than that of the resolving power determined by the wavelength of light used and the numerical aperture of a projection optical system, and patterning in the order of submicron is made possible easily when applied to a printing technique in a manufacturing process of semiconductor integrated circuits.

REFERENCES:
patent: 4346164 (1982-08-01), Tabarelli
patent: 4988188 (1991-01-01), Ohta
patent: 5144362 (1992-09-01), Kamon
patent: 5302999 (1994-04-01), Oshida
patent: 5316896 (1994-05-01), Fukuda
patent: 5323208 (1994-06-01), Fukuda
Nikkei Microdevice for Feb. 1987, pp. 103-124, Drawings only.
Hitachi Technical Review vol. 71, No. 5 (May 1989) pp. 25-32, Drawings only.

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