Glassmastering photoresist read after write method and system

Details Glassmastering photoresist read after write method and system Glassmastering photoresist read after write method and system

1998-05-12

2000-02-15

Angebranndt, Martin

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Making named article

430945, 430331, 430448, G11B 726

Patent

active

060251182

ABSTRACT:
A method of manufacturing an optical disc master from a glass substrate includes coating the substrate with a layer of photoresist, and applying an alkali-gel layer atop the photoresist. The coated substrate is then placed in an environment with a higher than normal humidity. The surface of the coated glass is selectively exposed to a beam of a writing laser, the exposure being controlled by digital information to be recorded on the disc. Exposed portions of the coated substrate experience a chemical reaction between the photoresist and the alkali material in the humid environment. Exposed portions are then developed and ablated thereby creating the pits and lands.

REFERENCES:
patent: 3146105 (1964-08-01), Wrisley et al.
patent: 4931147 (1990-06-01), Legierse et al.
patent: 5494782 (1996-02-01), Maenza et al.
patent: 5622816 (1997-04-01), Maenza et al.

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