Low-temperature baked substrate

Details Low-temperature baked substrate Low-temperature baked substrate

1989-01-30

1992-12-29

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 5, 501 8, 501 9, C03C 1100

Patent

active

051751305

ABSTRACT:
A substrate having a low dielectric constant for use with electronic devices consisting essentially of porous crystalline glass. The composition of the crystalline glass is represented by the formula X-Al.sub.2 O.sub.3 -SiO.sub.2, where X is one or more of the metal oxides ZnO, MgO, Li.sub.2 O, ZrO.sub.2, B.sub.2 O.sub.3, P.sub.2 O.sub.5, Y.sub.2 O.sub.3 and BaO. The crystalline glass may also include a filler material such as a ceramic powder or non-glass material. The substrate initially has a particle size of approximately 5 microns or less, which provides a high mechanical strength to the substrate even at high porosities.

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patent: 4649070 (1987-03-01), Kondo et al.
patent: 4666867 (1987-05-01), Beall et al.
patent: 4679320 (1987-07-01), Imanaka et al.
patent: 4791077 (1988-12-01), Kim et al.

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