CN102610386B - Multilayer type ceramic dielectric capacitor - Google Patents
Multilayer type ceramic dielectric capacitor Download PDFInfo
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- CN102610386B CN102610386B CN201210082589.5A CN201210082589A CN102610386B CN 102610386 B CN102610386 B CN 102610386B CN 201210082589 A CN201210082589 A CN 201210082589A CN 102610386 B CN102610386 B CN 102610386B
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Abstract
The invention relates to a multilayer type ceramic dielectric capacitor which consists of a ceramic body, external electrodes and internal electrodes, wherein one internal electrode and two internal electrodes are alternatively laminated together, so that a structure that two equivalent capacitors are connected in series and then are connected with other layers in parallel is formed; when n is an odd number, internal electrodes n1 and n2 and an internal electrode n+1 form two capacitors Cn1 and Cn2 with equal electric capacity; when n is an even number, the internal electrodes n1 and n2 and internal electrodes (n+1)1 and (n+1)2 form two capacitors Cn1 and Cn2 with equal electric capacity; the capacitors Cn1 and Cn2 are mutually connected in series to form a capacitor Cn; and the capacitors C1, C2...Cn are connected in parallel to form the multilayer type ceramic dielectric capacitor. According to the multilayer type ceramic dielectric capacitor, the internal electrodes of the whole capacitor realize a structure that two equivalent capacitors are connected in series by one piece of printing pattern, so that the defects that greater error occurs when a capacitor is manufactured by two screen plates and the capacity distribution is discrete are overcome, and further, the finished product rate of the capacitor is greatly improved.
Description
Technical field
The present invention relates to the graphic designs of the internal electrode of a kind of multilayer type ceramic dielectric capacitor, particularly multilayer type ceramic dielectric capacitor.
Background technology
Multilayer type ceramic dielectric capacitor manufacture process is as follows: ceramic powder and organic bond are put into ball grinder, rolls, form uniform ceramic size through certain hour.Then, by ceramic size curtain coating on polyester film, through super-dry, form ceramic membrane.By electrode pattern in the method printing of silk screen printing on ceramic membrane, interior electrode metal is the metals such as silver, silver palladium alloy, nickel and copper, again carries out drying.Gathered into folds by the ceramic film being printed with internal electrode, adjacent two layers electrode alongst staggers a segment distance, and Width aligns, and the ceramic membrane that upper and lower Ge Jia thickness is thicker makes diaphragm.Ceramic block material is put into hydrostatic press, carries out hot pressing, make to be closely linked between each layer.Ceramic block material good for hot pressing is cut into the capacitor monomer of needs.Capacitor, after discharging organic bond, carries out high temperature sintering, forms pottery.Through chamfering, carry out external electrode coating, be first stained with silver or copper slurry, through high temperature sintering (about 800 DEG C, lower than ceramic firing temperature), form external electrode, then electronickelling and tin, form multilayer type ceramic dielectric capacitor.
The present invention only relates to the graphic designs of internal electrode.Common multilayer ceramic capacitor internal electrode figure, the square or rectangular figure identical by many sizes forms.When lamination, the electrode that capacitor is adjacent will misplace, and namely odd-level electrode and even level electrode will move a displacement (dislocation), forms parallel-connection structure.
When capacitor carries out stacked, the ceramic diaphragm of second figure that prints electrode, move a distance in capacitor length direction, size is the length value of capacitor, and the electrode that the electrode at this moment on second layer ceramic diaphragm arrives ground floor ceramic diaphragm relatively forms dislocation.
But two pieces of half tones make an electric capacity and have comparatively big error, capacity distribution is discrete, causes the rate of finished products of capacitor to reduce, primarily of reason generation below: the tension force of (1) two piece of net can not be just the same, because tension force is different, the deformation size of printed pattern is also just different.When capacitor is stacked, causes the contraposition of adjacent two layers electrode to occur deviation, affect amount of capacity.(2) use two nets to make an electric capacity, need position during two screen paintings to align, can not deviation be occurred.During actual contraposition, may align completely hardly.
Summary of the invention
The defect existed for above-mentioned prior art and weak point, the invention provides a kind of multilayer type ceramic dielectric capacitor that rate of finished products is improved greatly.
The object of the present invention is achieved like this: multilayer type ceramic dielectric capacitor, by ceramic body, outer electrode and internal electrode are formed, feature be said internal electrode alternately laminated with 2 internal electrodes according to 1 internal electrode together with, to form on a kind of same layer 2 equivalent capacitances in series, and then the structure in parallel with other layer: when n is odd number, internal electrode n1, if the electric capacity Cn1 of the capacitances such as n2 and internal electrode n+1 formation two, Cn2, when n is even number, internal electrode n1 and internal electrode (n+1) 1, (n+1) if the electric capacity Cn1 of the capacitances such as 2 formation two, Cn2, electric capacity Cn1, Cn2 is mutually cascaded and forms Cn, electric capacity C1, C2...Cn are connected in parallel formation multilayer type ceramic dielectric capacitor.
Space D 0 on said same layer between 2 internal electrodes, distance D1, D2 between these 2 internal electrodes to outer electrode have following relation: D0≤D1=D2.
The internal electrode of said whole capacitor is realized by 1 printed patterns, 2 kinds of figures are placed in a printed patterns, 2 cascaded structures are realized: the printed patterns different by 2 kinds of internal electrode length is combined, a line long electrode, and what be adjacent is noncontinuous electrode by 1 version of throwing the net; In order to alternately appear in same capacitor by long electrode and noncontinuous electrode, when carrying out lamination, the Width along capacitor misplaces; After having folded the 1st layer, misplace when folded 2nd layer, now the 2nd column electrode of the 2nd layer moves on the 1st column electrode of the 2nd layer just, and such one deck is stacked, namely defines the capacitor with 2 cascaded structures.
Advantage of the present invention is the internal electrode of whole capacitor is realized 2 equivalent capacitances in series structures multilayer type ceramic dielectric capacitor by 1 printed patterns, just avoid two pieces of half tones to make an electric capacity and have comparatively big error, capacity distributes discrete defect, and the rate of finished products of capacitor is improved greatly.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the present invention 2 equivalent capacitance series circuit figure.
The printed pattern of Fig. 3 to be internal electrode be long electrode.
The printed pattern of Fig. 4 to be internal electrode be noncontinuous electrode.
Fig. 5 is offset laminar schematic diagram of the present invention.
Fig. 6 realizes by a pattern printed pattern that the present invention has 2 cascaded structure capacitors.
Fig. 7 is the electrode pattern design figure that the present invention has 2 cascaded structure capacitors.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
Shown in Fig. 1, Fig. 2, multilayer type ceramic dielectric capacitor of the present invention, be made up of ceramic body 1, outer electrode 7,8,9 and internal electrode, together with internal electrode is alternately laminated with 2 internal electrodes according to 1 internal electrode, to form on a kind of same layer 2 equivalent capacitances in series, and then the structure in parallel with other layer: internal electrode 11,12 and internal electrode 2 form electric capacity C11, C12 of the capacitances such as 2, and electric capacity C11, C12 are mutually cascaded and form C1; Electric capacity C21, C22 of the capacitances such as internal electrode 2 and internal electrode 31,32 formation 2, electric capacity C21, C22 are mutually cascaded and form C2; Internal electrode 31,32 and internal electrode 4 form electric capacity C31, C32 of the capacitances such as 2, and electric capacity C31, C32 are mutually cascaded and form C3...; When n is odd number, if electric capacity Cn1, Cn2 of the capacitances such as internal electrode n1, n2 and internal electrode n+1 formation two, when n is even number, internal electrode n1 and internal electrode (n+1) 1, (n+1) are if 2 electric capacity Cn1, Cn2 forming the capacitances such as two, and electric capacity Cn1, Cn2 are mutually cascaded and form Cn; Electric capacity C1, C2...Cn are connected in parallel formation multilayer type ceramic dielectric capacitor.
The internal electrode of whole capacitor is realized by 1 printed patterns, is placed on by 2 kinds of figures in 1 printed patterns, realizes 2 cascaded structures by 1 version of throwing the net.Its graphic designs is as Fig. 6, and it is that Fig. 3 and Fig. 4 combines, the long electrode of a line Fig. 3, and what be adjacent is the noncontinuous electrode of Fig. 4.In order to alternately appear in same capacitor by long electrode and noncontinuous electrode, when carrying out lamination, the Width (S direction) along capacitor misplaces.After having folded the 1st layer, misplace when folded 2nd layer, now the 2nd row (Line 2) electrode of the second layer moves on the 1st row (Line 1) electrode of the 1st layer just, and such one deck is stacked, namely defines the capacitor with 2 cascaded structures.Fig. 5 is offset laminar schematic diagram of the present invention, only gets a line folding two-layer ceramic diaphragm and shows, C is the index line of Width cutting position.
As shown in Figure 1, the space D 0 on same layer between 2 internal electrodes, distance D1, D2 between these 2 internal electrodes to outer electrode have following relation: D0≤D1=D2.The thickness T of internal electrode is 0.5 μm ~ 7 μm.
Fig. 7 is the electrode pattern design figure that invention has 2 cascaded structure capacitors, as shown in the figure:
The length of the raw stock of capacitor is L, and wide is W; Rows of electrodes spacing is respectively: D and d, D=2d;
Electrodes series spacing is: E;
The size design of electrode pattern is calculated as follows:
If: the size of 2 kinds of electrodes is respectively, long L1, wide W1; Long L2, wide W2.
Then there is following relational expression:
W＝W1+E L1＝L-D
L＝L1+D
L2＝L-d
L＝L2+d
Dislocation size=W
The width W of dislocation size=electric capacity
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (2)
1. a multilayer type ceramic dielectric capacitor, by ceramic body, outer electrode and internal electrode are formed, it is characterized in that said internal electrode alternately laminated with 2 internal electrodes according to 1 internal electrode together with, to form on a kind of same layer 2 equivalent capacitances in series, and then the structure in parallel with other layer: when n is odd number, internal electrode n1, if the electric capacity Cn1 of the capacitances such as n2 and internal electrode n+1 formation two, Cn2, when n is even number, internal electrode n1 and internal electrode (n+1) 1, (n+1) if the electric capacity Cn1 of the capacitances such as 2 formation two, Cn2, electric capacity Cn1, Cn2 is mutually cascaded and forms Cn, electric capacity C1, C2 ... Cn is connected in parallel formation multilayer type ceramic dielectric capacitor, space D 0 on described same layer between 2 internal electrodes, distance D1, D2 between these 2 internal electrodes to outer electrode have following relation: D0=D1=D2, and the thickness of described internal electrode is 7 μm.
2. multilayer type ceramic dielectric capacitor according to claim 1, it is characterized in that, the internal electrode of described whole capacitor is realized by 1 printed patterns, 2 kinds of figures are placed in a printed patterns, 2 cascaded structures are realized: the printed patterns different by 2 internal electrode length is combined by 1 version of throwing the net, a line long electrode, what be adjacent is noncontinuous electrode; In order to alternately appear in same capacitor by long electrode and noncontinuous electrode, when carrying out lamination, the Width along capacitor misplaces; After having folded the 1st layer, misplace when folded 2nd layer, now the 2nd column electrode of the 2nd layer moves on the 1st column electrode of the 2nd layer just, and such one deck is stacked, namely defines the capacitor with 2 cascaded structures.
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| CN201210082589.5A CN102610386B (en) | 2012-03-26 | 2012-03-26 | Multilayer type ceramic dielectric capacitor |
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| CN201210082589.5A CN102610386B (en) | 2012-03-26 | 2012-03-26 | Multilayer type ceramic dielectric capacitor |
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| CN102610386B true CN102610386B (en) | 2015-04-08 |
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| CN103531356A (en) * | 2013-09-29 | 2014-01-22 | 广东风华高新科技股份有限公司 | Preparation method for safety chip type multilayer ceramic capacitors |
| CN108806980A (en) * | 2018-07-26 | 2018-11-13 | 大连达利凯普科技有限公司 | A kind of high pressure cydariform capacitor of multilayer porcelain metastructure |
| CN116631776A (en) * | 2023-07-24 | 2023-08-22 | 无锡市海容电子有限公司 | Ceramic capacitor with improved capacity, voltage resistance and reduced lamination number and preparation method thereof |
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| CN1521775A (en) * | 2003-02-10 | 2004-08-18 | 青业电子工业股份有限公司 | Multilayer capacitor for reducing internal electrode layers and process for making same |
| CN100541685C (en) * | 2004-03-22 | 2009-09-16 | 广东风华高新科技股份有限公司 | A kind of manufacture method of high-voltage sheet type multilayer ceramic dielectric capacitor |
| CN1716473B (en) * | 2004-06-29 | 2010-05-05 | 王蕾雅 | Method for producing multilayer ceramic capacitor using vacuum sputtering method |
| CN201332022Y (en) * | 2008-11-01 | 2009-10-21 | 杭州灵通电子有限公司 | High-voltage and high-capacity multi-layer ceramic dielectric capacitor |
| CN201332021Y (en) * | 2008-11-01 | 2009-10-21 | 杭州灵通电子有限公司 | High-voltage and high-capacity multi-layer ceramic dielectric capacitor |
| JP5360079B2 (en) * | 2010-03-05 | 2013-12-04 | Ｔｄｋ株式会社 | Dielectric ceramic composition and ceramic electronic component |
| CN102249673A (en) * | 2011-04-26 | 2011-11-23 | 东莞市福德电子有限公司 | Multilayer clip ceramic capacitor dielectric material and capacitor thereof |
| CN202549619U (en) * | 2012-03-26 | 2012-11-21 | 大连达利凯普科技有限公司 | Multiple-layer plate type ceramic medium capacitor |
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Address after: 116630 Floor 1-4, No. 10 Guangming West Street, Dalian Economic and Technological Development Zone, Liaoning Province Patentee after: Dalian Dali Kaipu Technology Co., Ltd Address before: 116600 No. 17, Harbin Road, Dalian economic and Technological Development Zone, Liaoning, China Patentee before: DALIAN DALI KAIPU TECHNOLOGY Co.,Ltd. |