Multilayer ceramic substrate with interlayered capacitor

Details Multilayer ceramic substrate with interlayered capacitor Multilayer ceramic substrate with interlayered capacitor

1984-04-23

1986-01-28

Griffin, Donald A.

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

357 51, 501136, H01G 410, H01L 1900

Patent

active

045675422

ABSTRACT:
A multilayer ceramic substrate with an interlayered capacitor has a large electrostatic capacity and a high flexural strength, such as 1,500 Kg/cm.sup.2 or more, and yet is manufactured at a relatively low firing or sintering temperature. A first ceramic body includes a plurality of laminated first ceramic sheets with a high dielectric constant and with a plurality of internal electrodes sandwiching the respective first ceramic sheets to form capacitors therebetween. A second ceramic body is laminated over one side of the first ceramic body and has a plurality of laminated second ceramic sheets with a low dielectric constant. A plurality of first wiring layers are sandwiched between the second ceramic sheets. A third ceramic body is laminated over the other side of the first ceramic body and has a plurality of laminated third ceramic sheets formed of the same ceramic material that is used to make the second ceramic sheets. The second and third ceramic bodies are thicker than the first ceramic body. A second embodiment of the invention is a hybrid ceramic structure made of glass-ceramic insulator layers sandwiching at least one dielectric layer with interposed circuit patterns formed thereon.

REFERENCES:
patent: 3264709 (1966-08-01), Lupfer
patent: 3340074 (1967-09-01), Herczog
patent: 3430110 (1969-02-01), Goshgarian
patent: 3619739 (1971-11-01), Camenzino et al.
patent: 3683245 (1972-08-01), Bacher et al.
patent: 4063341 (1977-12-01), Bouchard et al.
patent: 4082906 (1978-04-01), Amin
patent: 4228482 (1980-10-01), Bouchard et al.
patent: 4233615 (1980-11-01), Takemoto et al.

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