Electricity: conductors and insulators – Conduits – cables or conductors – Preformed panel circuit arrangement
Patent
1990-05-10
1991-07-02
Dixon, Jr., William R.
Electricity: conductors and insulators
Conduits, cables or conductors
Preformed panel circuit arrangement
174264, 264 61, 427 97, H05K 102, H05K 340
Patent
active
050292420
ABSTRACT:
The structure consists of at least one glass-ceramic sheet (1) with holes (3) being filled with a conductive material (4) having a TCE slightly higher than that of the glass-ceramics and having undergone liquid phase sintering at the crystallization temperature of the glass-ceramic material (2) with the solid phase comprising conductive particles (5) and the liquid phase comprising at least a glass (6).
The method comprises the steps of providing a green sheet comprising an organic vehicle and particles of a crystallizable first glass and having via holes, filling the via holes with a paste comprising an organic vehicle, and an inorganic material comprising conductive particles and at least a second glass being low viscous at the sintering temperature, firing the then present structure in a reducing, neutral or slightly oxidizing atmosphere with the temperature being slowly raised to said sintering temperature and slowly cooling the structure.
REFERENCES:
patent: 4234367 (1980-11-01), Herron et al.
patent: 4301324 (1981-11-01), Kumar
patent: 4799983 (1989-01-01), Desai
patent: 4806188 (1989-02-01), Rellick
Blecker Ira David
Dixon Jr. William R.
Gallo Chris
International Business Machines - Corporation
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