Condenser-containing, ceramic multi-layer circuit board and semi

Details Condenser-containing, ceramic multi-layer circuit board and semi Condenser-containing, ceramic multi-layer circuit board and semi

1988-11-25

1989-08-15

Griffin, Donald A.

Electricity: electrical systems and devices

Miscellaneous

174 685, 357 51, 363132, H01L 2302, H02M 7538, H05K 118

Patent

active

048580775

ABSTRACT:
A condenser-containing, ceramic multi-layer circuit board which comprises a plurality of layers of ceramic insulating material having circuit conductors, throughholes and condensers composed of ceramic dielectric condenser material having a higher dielectric constant than that of the ceramic insulating material and a pair of electrodes sandwiching the ceramic dielectric condenser material, the condensers being in a layer structure with openings concentric to the individual throughholes and having a larger diameter than the diameter of the throughholes with a distance between the condenser opening edges surrounding the corresponding throughholes and the throughhole peripheral edges, thereby forming clearances therebetween and the ceramic insulating material being filled in the clearances between the condenser opening edges and the corresponding throughhole peripheral edges without any contact with the ceramic dielectric condenser material and the throughholes can reduce electric noises owing to the presence of the condenser without impairing the signal transmission speed, when applied to a board for a large-scale electronic computer, thereby making the computing speed faster than the conventional one.

REFERENCES:
patent: 4322778 (1982-03-01), Barbour et al.
patent: 4407007 (1983-09-01), Desai et al.
patent: 4670833 (1987-06-01), Sachs
patent: 4706165 (1987-11-01), Takenaka et al.

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