Refractory covercoat for semicondutor devices and methods of mak

Details Refractory covercoat for semicondutor devices and methods of mak Refractory covercoat for semicondutor devices and methods of mak

1992-01-10

1993-03-02

Beck, Shrive

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427123, 4271262, 4271264, 4271263, 427209, 427226, B05D 512

Patent

active

051907933

ABSTRACT:
Disclosed is a refractory covercoat composition useful in making two-sided circuitries. The refractory composition contains glass frit, and an inorganic binder including at least one selected from the group consisting of ZrO.sub.2, Al.sub.2 O.sub.3, SiO.sub.2, BaO, CaO, MgO and La.sub.2 O.sub.3. The refractory covercoat has an elevated softening point so that the covercoat protects a printed conductor circuit from damage due to contact with a firing furnace conveyor belt.

REFERENCES:
patent: 3495996 (1970-02-01), Delaney et al.
patent: 4623556 (1986-11-01), Brown et al.
patent: 4871584 (1989-10-01), Weber
patent: 4913930 (1990-04-01), Getson

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