Process of making semiconductor devices using photosensitive bod

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

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20415914, 20415922, 430270, 430272, 430313, 430320, G03C 500

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active

044004613

ABSTRACT:
Photosensitive bodies that are sensitive to ultraviolet radiation and that exhibit excellent contrast are formed from base soluble polymers such as poly(methyl methacrylate-co-methacrylic acid) physically mixed with base insoluble materials such as o-nitrobenzyl esters. The base insoluble esters decompose upon irradiation to form base soluble entities in the irradiated regions. These irradiated portions are then soluble in basic solutions that are used to develop the desired image.

REFERENCES:
patent: 3849137 (1974-11-01), Barzynski et al.
patent: 3949143 (1976-04-01), Schlesinger
patent: 4131465 (1978-12-01), Petropoulos
patent: 4150989 (1979-04-01), Chambers et al.

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