Passivating bath for semiconductive bodies

Details Passivating bath for semiconductive bodies Passivating bath for semiconductive bodies

1979-09-12

1980-11-11

Williams, Howard S.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

C25D 1302, C25D 1310

Patent

active

042331331

ABSTRACT:
For applying a protective coating to a semiconductive body, such as a wafer or chip with exposed junctions, the body is immersed in a bath in which particles of a passivant such as glass are suspended for electrophoretic deposition on the body surface. The bath consists essentially of an organic solvent such as acetone, an amine and a hydrohalogenic acid in proportions yielding a preferably alkalinic pH between 4 and 10.

REFERENCES:
patent: 3642597 (1972-02-01), Sheldon

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