阅读说明：本技术 一种多层陶瓷电容器 (A kind of multilayer ceramic capacitor ) 是由 陆亨 卓金丽 李祥兴 陈伟健 于 2019-08-28 设计创作，主要内容包括：本发明公开了一种多层陶瓷电容器,包括陶瓷体、第一外电极、第二外电极、内电极,所述陶瓷体为由多个陶瓷介质层层叠而成的长方体,所述内电极为至少一个,层叠在陶瓷介质层表面；所述内电极为矩形,所述内电极的一端形成引出边,所述引出边与第一端面有重叠；所述内电极的另一端沿着陶瓷介质层的表面向第二端面延伸,且与第二端面之间有间隙；所述内电极靠近第一端面的一端设有缺口,所述缺口与第一端面形成封闭的图形。本发明所述多层陶瓷电容器,无需将层叠体剖开即可方便地检验两个切割方向的切偏程度,甚至可以仅从层叠体的一个面同时检验两个切割方向上的切偏程度,检验和分选切偏不良品的效率较高。(The invention discloses a kind of multilayer ceramic capacitors, including ceramic body, the first external electrode, the second external electrode, interior electrode, the ceramic body is the cuboid being laminated by multiple ceramic dielectric layers, and the interior electrode is at least one, is layered in ceramic dielectric layer surface；The interior electrode is rectangle, and one end of the interior electrode, which is formed, draws side, and the extraction side has overlapping with first end face；The other end of the interior electrode extends along the surface of ceramic dielectric layer to second end face, and has gap between second end face；The interior electrode is equipped with notch close to one end of first end face, and the notch and first end face form closed figure.Multilayer ceramic capacitor of the present invention, without laminated body is splitted be convenient to examine two cut direction cut inclined degree, it even can only examine the inclined degree of cutting in two cut direction simultaneously from a face of laminated body, the efficiency that inclined defective products is cut in inspection and sorting is higher.)

1. a kind of multilayer ceramic capacitor, which is characterized in that including ceramic body, the first external electrode, the second external electrode, interior electrode, The ceramic body is the cuboid being laminated by multiple ceramic dielectric layers, the ceramic body include mutually opposed upper surface and Lower surface, mutually opposed first end face and second end face, mutually opposed first side and second side；

The interior electrode includes at least one electrode and at least one the second inner electrode in first, electrode and second in described first Interior electrode is alternately laminated in different ceramic dielectric layer surfaces；Electrode is connected with the first external electrode in described first, and described Electrode and the second external electrode insulate in first；The second inner electrode is connected with the second external electrode, and the second inner electrode It insulate with the first external electrode；

Electrode, the second inner electrode are rectangle in described first；One end of electrode forms first and draws side in described first, and described the One extraction side has overlapping with first end face；The other end of electrode is along the surface of ceramic dielectric layer to second end face in described first Extend, and has gap between second end face；One end of the second inner electrode forms second and draws side, and described second draws side Have with second end face overlapping；The other end of the second inner electrode extends along the surface of ceramic dielectric layer to first end face, and There is gap between first end face；

Electrode in described first, at least one in the second inner electrode are equipped with notch；When electrode is equipped with notch in described first, The notch forms closed figure close to one end of first end face, the notch and first end face set on electrode in described first Shape；When the second inner electrode is equipped with notch, the notch is set to the second inner electrode close to one end of second end face, institute It states notch and second end face forms closed figure.

2. multilayer ceramic capacitor as described in claim 1, which is characterized in that first end is completely covered in the first external electrode It face and carries over and extends to upper surface, lower surface, first side and second side；Second end is completely covered in the second external electrode It face and carries over and extends to upper surface, lower surface, first side and second side；The first external electrode, the second external electrode it Between have interval and insulation.

3. multilayer ceramic capacitor as claimed in claim 2, which is characterized in that the interior electrode to first side, second side The shortest distance in face is equal.

4. multilayer ceramic capacitor as described in claim 1, which is characterized in that the closed figure be right angled triangle, At least one of rectangle, parallelogram, right-angled trapezium.

5. multilayer ceramic capacitor as described in claim 1 or 4, which is characterized in that the closed figure and first end face Or the acute angle that second end face is formed is 30 °~60 °.

6. multilayer ceramic capacitor as described in claim 1 or 4, which is characterized in that when the closed figure is right angle three When angular, if the length of the notch and first end face or second end face intersection is c, the length of ceramic body is m, then 0.15m≤c≤0.25m。

7. multilayer ceramic capacitor as described in claim 1 or 4, which is characterized in that electrode is equipped with notch in described first When, electrode is the long side of electrode in first perpendicular to two sides of first end face in described first；The institute of the closed figure The shortest distance for having vertex to the long side of electrode in first is not less than 0.04mm；

When the second inner electrode is equipped with notch, the second inner electrode is electricity in second perpendicular to two sides of second end face The long side of pole；The shortest distance of long side of all vertex of the closed figure to the second inner electrode is not less than 0.04mm.

8. multilayer ceramic capacitor as described in claim 1 or 4, which is characterized in that when the closed figure is parallel four When the shape of side, if the length of the notch and first end face or second end face intersection is c, 0.04mm≤c≤0.6mm.

9. multilayer ceramic capacitor as described in claim 1, which is characterized in that the interior electrode further includes being alternately laminated in not With ceramic dielectric layer on multiple thirds in electrode in electrode and the multiple 4th, electricity in electrode and the described 4th in the third Extremely rectangle, the notch are set to any one in first on electrode or/and on any one the second inner electrode.

10. multilayer ceramic capacitor as described in claim 1, which is characterized in that the material of the ceramic dielectric layer is metatitanic acid At least one of titanate ceramics, magnesium titanate ceramics, calcium zirconate ceramics；The material of the interior electrode be silver, palladium, silver palladium alloy, nickel, At least one of copper, monel；The material of the external electrode be silver, palladium, silver palladium alloy, nickel, copper, in monel extremely Few one kind.

Technical field

The present invention relates to field of electrical components more particularly to a kind of multilayer ceramic capacitors.

Background technique

Usually in the processing procedure of multilayer ceramic capacitor, multiple ceramic diaphragms for being printed with interior electrode are laminated to form green compact Then green sheet is compacted by being laminated, then is cut into the laminated body of cuboid one by one by substrate, multi-layer ceramics can be completed The green compact of capacitor form.In cutting, due to cutting accuracy etc., can exist and cut inclined phenomenon.If cutting inclined lesser extent, Cutting will not generally adversely affect partially；But if offset exceeds technique allowed band, there are reliability hidden danger for capacitor. It is sorted out so inclined degree unacceptable defective products will be cut when cutting inclined in time.

Generally, that laminated body is examined by observing four sections of laminated body cuts inclined degree.Only due to interior electrode It is drawn on two opposite sections of laminated body, the position on side can be drawn according to the interior electrode on the two faces to observe One of cut direction cuts inclined degree.But the typically no interior electrode of other two opposite section of laminated body is drawn Side or other identifier need to split in laminated body makes so another cut direction is cut inclined degree and can not be observed directly Electrode exposing can just see, cut in this way examine partially it is very inconvenient, examine and sorting efficiency it is lower.

Summary of the invention

Based on this, a kind of multi-layer ceramics electricity is provided it is an object of the invention to overcome above-mentioned the deficiencies in the prior art place Container.The multilayer ceramic capacitor examines that cut inclined degree more convenient in cutting processing procedure, can greatly improve to cut quality Checkability and cut the efficiency of separation of inclined defective products.

To achieve the above object, the technical solution used in the present invention are as follows:

A kind of multilayer ceramic capacitor, including ceramic body, the first external electrode, the second external electrode, interior electrode, the ceramic body For the cuboid being laminated by multiple ceramic dielectric layers, the ceramic body includes mutually opposed upper and lower surfaces, phase Mutual opposed first end face and second end face, mutually opposed first side and second side；

The interior electrode includes at least one electrode and at least one the second inner electrode in first, in described first electrode and The second inner electrode is alternately laminated in different ceramic dielectric layer surfaces；Electrode is connected with the first external electrode in described first, and Electrode and the second external electrode insulate in described first；The second inner electrode is connected with the second external electrode, and in described second Electrode and the first external electrode insulate；

Electrode, the second inner electrode are rectangle in described first；One end of electrode forms first and draws side, institute in described first State the first extraction side have with first end face it is overlapping；The other end of electrode is along the surface of ceramic dielectric layer to second in described first End face extends, and has gap between second end face；One end of the second inner electrode forms second and draws side, and described second draws Side has overlapping with second end face out；The other end of the second inner electrode prolongs along the surface of ceramic dielectric layer to first end face It stretches, and has gap between first end face；

Electrode in described first, at least one in the second inner electrode are equipped with notch；Electrode, which is equipped with, in described first lacks When mouth, the notch is set to electrode in described first and is formed and closed close to one end of first end face, the notch and first end face Figure；When the second inner electrode is equipped with notch, the notch is set to the second inner electrode close to the one of second end face End, the notch and second end face form closed figure.

Preferably, the first external electrode, which is completely covered first end face and carries over, extends to upper surface, lower surface, first Side and second side；The second external electrode, which is completely covered second end face and carries over, extends to upper surface, lower surface, first Side and second side；There are interval and insulation between the first external electrode, the second external electrode.

Preferably, the interior electrode and the first side, second side have gap, invade interior electricity to avoid moisture Pole, while being also avoided that the extension of interior electrode and first external electrode and the second external electrode in first side and second side Between occur short circuit or flashover.

It is highly preferred that the interior electrode is equal to first side, the shortest distance of second side.

Preferably, the closed figure is right angled triangle, rectangle, parallelogram, at least one in right-angled trapezium Kind.

Preferably, the acute angle that the closed figure and first end face or second end face are formed is 30 °~60 °.Work as angle It is insufficient to the inspection range of X-direction cutting offset at 30 ° of <；When 60 ° of angle >, to point of the cutting offset of X-direction Degree of distinguishing will be too small, and inspection becomes difficult.

Preferably, when the closed figure is right angled triangle, if the notch and first end face or second end face The length of intersection is c, and the length of ceramic body is m, then 0.15m≤c≤0.25m.C is too small then to cut offset to X-direction Inspection range it is insufficient；C too it is big then in first the contact area of electrode and the first external electrode it is too small so as to occur it is conductive not It is good, and notch occupies the too many area of electrode in first to be unfavorable for improving the capacitance of multilayer ceramic capacitor.

Preferably, when electrode is equipped with notch in described first, two perpendicular to first end face of electrode in described first Side is the long side of electrode in first；All vertex of the closed figure to the long side of electrode in first the shortest distance not Less than 0.04mm；

When the second inner electrode is equipped with notch, the second inner electrode is second perpendicular to two sides of second end face The long side of interior electrode；The shortest distance of long side of all vertex of the closed figure to the second inner electrode is not less than 0.04mm。

Preferably, when the closed figure is parallelogram, if the notch and first end face or second end face The length of intersection is c, then 0.04mm≤c≤0.6mm.

Preferably, the interior electrode further include in the multiple thirds being alternately laminated on different ceramic dielectric layers electrode and Electrode in multiple four, electrode is rectangle in electrode and the described 4th in the third, the notch be set to any one first On interior electrode or/and on any one the second inner electrode.

Preferably, the material of the ceramic dielectric layer be barium titanate ceramics, magnesium titanate ceramics, in calcium zirconate ceramics at least It is a kind of；The material of the interior electrode is at least one of silver, palladium, silver palladium alloy, nickel, copper, monel；The external electrode Material is at least one of silver, palladium, silver palladium alloy, nickel, copper, monel.

Compared with the existing technology, the invention has the benefit that

Multilayer ceramic capacitor of the present invention is convenient to examine two cut direction without splitting laminated body Cut inclined degree, it might even be possible to only examine the inclined degree of cutting in two cut direction simultaneously from a face of laminated body, examine and divide The efficiency that inclined defective products is cut in choosing is higher.

Detailed description of the invention

Fig. 1 is the appearance diagram of the multilayer ceramic capacitor of embodiment 1；

Fig. 2 is the appearance diagram of the ceramic body of the multilayer ceramic capacitor of embodiment 1；

Fig. 3 is the sectional view of the multilayer ceramic capacitor of Fig. 1；

Fig. 4 is another sectional view of the multilayer ceramic capacitor of Fig. 1；

Fig. 5 is the silk screen pictorial diagram for printing the interior electrode of the multilayer ceramic capacitor of embodiment 1；

Fig. 6 is the sectional view of the multilayer ceramic capacitor of embodiment 1 when X-direction cuts inclined；

Fig. 7 is the sectional view of the multilayer ceramic capacitor of embodiment 1 when Y-direction cuts inclined；

Fig. 8 is the sectional view of the multilayer ceramic capacitor of embodiment 2；

Fig. 9 is the silk screen pictorial diagram for printing the interior electrode of the multilayer ceramic capacitor of embodiment 2；

Figure 10 is the sectional view of the multilayer ceramic capacitor of embodiment 3；

Figure 11 is the silk screen pictorial diagram for printing the interior electrode of the multilayer ceramic capacitor of embodiment 3；

Figure 12 is the sectional view of the multilayer ceramic capacitor of embodiment 3 when X-direction cuts inclined；

Figure 13 is the sectional view of the multilayer ceramic capacitor of embodiment 3 when Y-direction cuts inclined；

Figure 14 is the sectional view of the multilayer ceramic capacitor of embodiment 4；

Figure 15 is the silk screen pictorial diagram for printing the interior electrode of the multilayer ceramic capacitor of embodiment 4；

Figure 16 is the sectional view of the multilayer ceramic capacitor of embodiment 5；

Wherein, 100, multilayer ceramic capacitor；10, ceramic body；20, the first external electrode；30, the second external electrode；S1, upper table Face；S2, lower surface；S3, first end face；S4, second end face；S5, first side；S6, second side；12, ceramic dielectric layer； 14, electrode in first；15, electrode in third；16, the second inner electrode；17, electrode in the 4th；142, notch.

Specific embodiment

To better illustrate the object, technical solutions and advantages of the present invention, below in conjunction with the drawings and specific embodiments pair The present invention is described further.