Multilayer substrate with inner capacitors

Details Multilayer substrate with inner capacitors Multilayer substrate with inner capacitors

1990-09-27

1991-11-12

Griffin, Donald A.

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

174250, 252 623BT, C04B 3546, H05K 114, H01G 410

Patent

active

050652753

ABSTRACT:
A multilayer substrate with inner capacitors comprising a dielectric layer sandwiched between upper and lower insulating layers, a couple of printed electrodes in desired patterns within the thickness of the dielectric layer so as to form each capacitor at the portion of the dielectric layer corresponding to the electrodes, and a couple of leading terminals on one surface of the insulating layer, which communicate with the electrodes, the multilayer substrate being characterized in that the dielectric layer is composed of a ceramic composition mainly comprising MTiO.sub.3 -based ceramics (M represents one or several of Ba, Ca, Mg, La, Sr and Nd) and the insulating layer is composed of a ceramic composition mainly comprising MgO-SiO.sub.2 -CaO-based ceramics, which is defined by an area surrounded by the lines connecting points A, B, C, D, E, F and G as shown in FIG. 1 and listed below, wherein X, Y and Z respectively represent weight percent values of MgO, SiO.sub.2 and CaO at points A, B, C, D, E, F and G.

REFERENCES:
patent: 4302625 (1981-11-01), Hetherington et al.
patent: 4542107 (1985-09-01), Kato et al.
patent: 4882652 (1989-11-01), Furukawa et al.

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