Low internal temperature technique for hermetic sealing of micro

Details Low internal temperature technique for hermetic sealing of micro Low internal temperature technique for hermetic sealing of micro

1982-01-18

1987-08-11

Hearn, Brian E.

Fishing, trapping, and vermin destroying

357 72, 357 74, 357 81, 219 85BA, 219339, 219347, 219349, 219350, 65 43, 65 48, 437221, H01L 2158

Patent

active

046852000

ABSTRACT:
A technique for enclosing microelectronic circuit elements in hermetically sealed packages comprising a planar ceramic substrate with a box-like ceramic cover sealed thereto by a fused glass coating. The glass sealant is applied to the substrate in the form of a paste which thereafter is fired at high temperature and cooled to produce a smooth glass coating. With the cover in place on the substrate, the glass coating is remelted by heat developed by infra-red radiation developed by four line-focussed radiant heaters at the four sides of the package. The radiation of each heater is focussed at the interface line between the cover and the substrate. Because the radiant heat is concentrated along the interface line, unwanted heat transfer into the package is minimized, and the temperature is prevented from rising sufficiently to damage heat-sensitive elements. Upon removal of the radiant heat, the glass hardens in a condition of fusion and/or chemical bonding with the cover and substrate providing true hermetic sealing.

REFERENCES:
patent: 3283124 (1966-01-01), Kawecki
patent: 3404215 (1968-10-01), Burks et al.
patent: 3586813 (1970-07-01), Cruickshank et al.
patent: 3683146 (1972-08-01), Nugent et al.
patent: 3735211 (1973-05-01), Kaphias
patent: 4005457 (1977-01-01), Hill et al.
patent: 4291815 (1981-09-01), Gordon et al.
patent: 4400870 (1983-08-01), Islam

Affiliated with

Also associated with

Rating

Low internal temperature technique for hermetic sealing of micro does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Low internal temperature technique for hermetic sealing of micro, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low internal temperature technique for hermetic sealing of micro will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-395568