Hermetic vias utilizing metal-metal oxides

Details Hermetic vias utilizing metal-metal oxides Hermetic vias utilizing metal-metal oxides

2011-03-08

2011-03-08

Lam, Cathy (Department: 1784)

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

C428S209000, C174S257000, C174S264000, C252S514000, C252S518100

Reexamination Certificate

active

07901761

ABSTRACT:
The invention is a hermetic via in a ceramic substrate that is comprised of noble metal powder in a glass-free paste that contains an admixture of a particulate phase of niobium pentoxide. The electrically conductive platinum provides excellent electrical conductivity while the niobium pentoxide phase prevents shrinkage of the paste during thermal processing and binds to both the ceramic and the noble metal particulates in the via, thus maintaining a hermetic seal around the via.

REFERENCES:
patent: 5855711 (1999-01-01), Araki et al.
patent: 6432239 (2002-08-01), Mandai et al.
patent: 7084350 (2006-08-01), De La Prieta et al.

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