Stained glass photomasks and method of making by electrodealkali

Details Stained glass photomasks and method of making by electrodealkali Stained glass photomasks and method of making by electrodealkali

1979-07-25

1981-08-25

Herbert, Jr., Thomas J.

Coating processes

Measuring, testing, or indicating

Thickness or uniformity of thickness determined

65 30E, 204180R, 427 96, 427205, 427261, 427282, 428210, 430 5, 430321, B05D 512, B05D 136

Patent

active

042859883

ABSTRACT:
Glass photomasks having a stained pattern within the glass for use in photolithographic processes are made by dealkalizing surface zones of a glass sheet in a predetermined pattern by means of an electric field and subsequently injecting stain-producing ions, such as silver and/or copper, into the non-dealkalized zones of the glass.

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