Multi-layer ceramic capacitor

A technology of ceramic capacitors and ceramic layers, which is applied in the direction of laminated capacitors, capacitors, fixed capacitors, etc., can solve problems such as short circuits, and achieve the effect of not being easy to short circuit

Active Publication Date: 2018-10-23
TAIYO YUDEN KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In multilayer ceramic capacitors manufactured by the technique of adding side edges, short circuits between internal electrodes tend to occur near the side surfaces of the multilayer body

Method used

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Embodiment Construction

[0056] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0057] In the drawings, X-axis, Y-axis, and Z-axis orthogonal to each other are appropriately indicated. The X-axis, Y-axis and Z-axis are common to all figures.

[0058] 1. Basic configuration of multilayer ceramic capacitor 10

[0059] Figure 1~3 It is a figure which shows the multilayer ceramic capacitor 10 which concerns on one Embodiment of this invention. figure 1 It is a perspective view of the multilayer ceramic capacitor 10 . figure 2 is the edge of the multilayer ceramic capacitor 10 figure 1 A cross-sectional view of line A-A'. image 3 is the edge of the multilayer ceramic capacitor 10 figure 1 The sectional view of the BB' line.

[0060] Multilayer ceramic capacitor 10 includes ceramic main body 11 , first external electrode 14 , and second external electrode 15 . The ceramic main body 11 typically has two end surfaces facing the X-axis direction,...

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Abstract

The invention provides a multi-layer ceramic capacitor in which short circuit between internal electrodes does not easily occur even if the average thickness of ceramic layers is set to be below 0.4 [mu]m. The multi-layer ceramic capacitor includes a multi-layer unit and a side margin. The multi-layer unit includes ceramic layers laminated in a first direction, internal electrodes disposed betweenthe ceramic layers, a main surface oriented in the first direction, a surface layer portion in a range from the main surface to a predetermined depth, and a center portion adjacent to the surface layer portion in the first direction. The side margin covers the multi-layer unit from a second direction orthogonal to the first direction. The ceramic layers have an average dimension that is 0.4 [mu]mor less in the first direction. Each of the internal electrodes includes an oxidized region adjacent to the side margin. The oxidized region in the surface layer portion has a dimension in the seconddirection that is equal to or more than twice the average dimension of the ceramic layers in the first direction.

Description

technical field [0001] The present invention relates to a laminated ceramic capacitor provided with side edge portions. Background technique [0002] In a method of manufacturing a multilayer ceramic capacitor, there is known a technique of attaching side edge portions to protect the periphery of internal electrodes (see Patent Documents 1 and 2). For example, in the technique described in Patent Document 1, a laminated body having internal electrodes exposed on the side faces is produced, and side edge portions are provided on the side faces of the laminated body. [0003] In a multilayer ceramic capacitor manufactured by the technique of adding side edges, short circuits between internal electrodes tend to occur near the side surfaces of the multilayer body. In this regard, in the technique described in Patent Document 1, by providing an oxidized region at the tip of the internal electrodes, it is possible to suppress the occurrence of a short circuit between the internal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G4/30H01G4/12
CPCH01G4/12H01G4/30H01G4/0085H01G4/224H01G4/232H01G2/20H01G4/015H01G4/008H01G4/248
Inventor 大野亮福冈哲彦楠本昌司河野明彦
Owner TAIYO YUDEN KK
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