Manufacturing method of intermediate body of multilayer ceramic capacitor

Abstract

The present invention provides an intermediate body of a multilayer ceramic capacitor capable of remarkably improving productivity, having excellent adhesion between internal electrodes and external electrodes, high reliability, excellent yield rate, and high and stable electrical characteristics, etc. Manufacturing method, aqueous treatment solution containing halogen compound used in manufacturing intermediate of laminated ceramic capacitor, intermediate of laminated ceramic capacitor, method of manufacturing laminated ceramic capacitor and laminated ceramic capacitor; in manufacturing laminated ceramic capacitor In the case of an intermediate body (1) of a ceramic capacitor, ceramic layers (2) and internal electrodes (3) are alternately laminated in multiple layers, and the laminate is crimped and cut to obtain an intermediate body (4) of a laminated ceramic capacitor Thereafter, the intermediate body (4) is sintered, and then at least an end portion of the intermediate body (40) of the sintered laminated ceramic capacitor is brought into contact with an aqueous treatment solution containing a halogen compound, whereby the ceramic layer (2 ) is etched to expose the end face or end portion of the internal electrode (3) buried in the ceramic layer (2) toward the outside from the end face (2) of the ceramic layer; treatment of the aqueous solution; in addition, external electrodes (5) are provided at both ends or side surfaces of the intermediate body (1) of the obtained laminated ceramic capacitor in such a manner as to be electrically connected to the internal electrodes, thereby obtaining a laminated ceramic capacitors (10).

Description

technical field [0001] The present invention relates to a method for producing an intermediate body of a laminated ceramic capacitor, a treatment aqueous solution containing a halogen compound used in the production of an intermediate body of a laminated ceramic capacitor, an intermediate body of a laminated ceramic capacitor, and production of a laminated ceramic capacitor method and multilayer ceramic capacitors. Background technique [0002] Conventionally, in multilayer ceramic capacitors, ceramic layers and internal electrodes are alternately stacked in multiple layers, and the laminate is crimped and cut to obtain a green chip, that is, a green chip for multilayer ceramic capacitors. Thereafter, the green body for a laminated ceramic capacitor is sintered, and then external electrodes are formed on both end faces of the green body for a laminated ceramic capacitor after sintering, thereby manufacturing (for example, refer to Patent Document 1 and Patent Document 2 ). ...

AI Technical Summary

Problems solved by technology

In the intermediate body 4 of the multilayer ceramic capacitor before sintering, such as Figure 118 As shown in (a), the end faces of the internal electrodes 3 are exposed to the outside from the end faces of the ceramic layer 2, but if they are sintered, then Figure 118 As shown in (b), the internal electrode 3 is buried in the ceramic layer 2 due to the difference in thermal expansion rate or thermal contraction rate between the ceramic layer 2 and the internal electrode layer 3.

Images