Multilayer ceramic capacitor and method of manufacture thereof

Details Multilayer ceramic capacitor and method of manufacture thereof Multilayer ceramic capacitor and method of manufacture thereof

1992-08-26

1993-07-27

Griffin, Donald A.

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

29 2542, 501138, H01G 412, H01G 700, C04B 3546

Patent

active

052315584

ABSTRACT:
There is provided structure and a manufacturing method of a multilayer ceramic capacitor which realizes a low rate of change in electrostatic capacity, a small size, high capacity and low manufacturing cost. A plurality of ceramic sheets (S1 to S10) having different Curie points are applied by carbonaceous ink (2) and laminated. By subjecting to sintering, the carbonaceous ink (2) is incinerated with the result that a plurality of empty layers (4) are formed. Thereafter, lead or the like is poured into empty layers (4) so as to form a plurality of internal electrodes (41 and 42). Due to a multilayer structure made up of a plurality of ceramic sheets having different Curie points, a low rate of change in electrostatic capacity is realized on the basis of the logarithmic mixing law. Further, in the sintering step, intervening empty layers (4) between every adjoining ceramic sheets prevent the diffusion of ceramic materials. Moreover, subsequent to the sintering step, internal electrodes (41 and 42) are formed by pouring an electrode material, for example, lead, into empty layers ( 4). This allows low manufacturing cost and a small capacitor size.

REFERENCES:
patent: 4379319 (1983-04-01), Wilson
patent: 4379854 (1983-04-01), Soong
patent: 5130281 (1992-07-01), Sano et al.

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