Glass and hermetic seal

Details Glass and hermetic seal Glass and hermetic seal

1981-02-23

1982-01-05

McCarthy, Helen M.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

65 29, 501 66, 501 70, 174 5061, 174 52H, 403 30, 428433, C03C 304, C03C 308

Patent

active

043095070

ABSTRACT:
An improved sealing glass composition for making compression glass electrical feedthroughs in semiconductor device packages is described wherein the improved sealing glass consists essentially of (by weight percent) 63-68% SiO.sub.2, 3-6% Al.sub.2 O.sub.3, 8-9% K.sub.2 O, 5-6% Na.sub.2 O, 0.5-1.5% Li.sub.2 O, 2-4% BaO, 5-7% SrO, 2-4% CaO, 0.5-1.5% MgO, 0.5-1.5% TiO.sub.2, and 0.5-1.5% B.sub.2 O.sub.3.

REFERENCES:
patent: 3697823 (1972-10-01), Correll
patent: 3805107 (1974-04-01), Boyd
patent: 4065636 (1977-12-01), Herczog
patent: 4128697 (1978-12-01), Simpson
patent: 4255198 (1981-03-01), Danielson et al.

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