CN201015101Y - Multilayer ceramic capacitor - Google Patents
Multilayer ceramic capacitor Download PDFInfo
- Publication number
- CN201015101Y CN201015101Y CNU2006201564430U CN200620156443U CN201015101Y CN 201015101 Y CN201015101 Y CN 201015101Y CN U2006201564430 U CNU2006201564430 U CN U2006201564430U CN 200620156443 U CN200620156443 U CN 200620156443U CN 201015101 Y CN201015101 Y CN 201015101Y
- Authority
- CN
- China
- Prior art keywords
- layer
- compensation
- electrode
- ceramic dielectric
- interior electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The utility model relates to a multilayer ceramic capacitor to avoid the thickness difference of the ceramic laminating body and to provide the coincident safe edge distance. The utility model comprises a laminating body, which is composed of a plurality of ceramic dielectric medium layers, an internal electrode lamination between the ceramic dielectric medium layer and the internal electrode lamination, and two outer electrodes, which are connected with the relative vertical ends of the laminating body. A vertical end emerges from a side face of the laminating body by the internal electrodes of each layer alternatively and is electrically connected with one of the two outer electrodes. The utility model is characterized in that: a compensation layer arranged at the vertical edge in opposite to the vertical end of the internal electrode pattern is positioned between the ceramic dielectric medium layers, is made of electric conducting material and has the same thickness as the internal electrode. The compensation layer and the internal electrode at the same layer, between which a preset vertical separation is arranged, are electrically connected with the two outer electrodes respectively, and the vertical separations between the compensation layer and the internal electrodes of each layer are the same.
Description
Technical field
The utility model relates to a kind of multilayer ceramic capacitor, relates in particular to a kind of multilayer ceramic capacitor of avoiding ceramic stacked body to form thickness difference and have consistent safe edge distance.
Background technology
Known multilayer ceramic capacitor, with reference to the sectional structure along its length direction shown in Figure 1, comprise by a plurality of ceramic dielectric layers 11 and be formed on interior electrode 12 mutual stacked ceramic duplexers that constitute between the ceramic dielectric layer 11 and two external electrode 13a, 13b that are connected the duplexer longitudinal end that interior electrode 12 alternately is electrically connected with respective electrode among two external electrode 13a, the 13b.
Fig. 2 illustrates the interior layout of electrode 12 on ceramic dielectric layer 11.Interior electrode 12 patterns roughly are rectangle, and have along both side edges and vertical two relative ora terminalis of (length direction) that laterally (Width) is relative.Have widthwise edge apart from W between the both lateral sides edge of interior electrode 12 and the transverse edge of ceramic dielectric layer 11, this widthwise edge can be protected interior electrode apart from W.A vertical ora terminalis of interior electrode 12 exposes longitudinal edge of ceramic dielectric layer 11 and is electrically connected with external electrode 13b, has vertical back gauge L between another longitudinal edge of its another vertical ora terminalis and ceramic dielectric layer 11.This vertical back gauge L constitutes the spacing of interior electrode 12 and another external electrode 13a, can prevent the different in nature electrode generation electrical short of capacitor.In order to obtain satisfied electrical characteristic and high reliability, the external electrode material such as spreads at factor when considering sintering simultaneously in the ceramic dielectric layer, vertically back gauge L must have usually the preliminary dimension that is referred to as " safe edge distance ", and the vertical back gauge L on each ceramic dielectric layer must be consistent.
Above-mentioned multilayer ceramic capacitor generally is to make by the following method: first step is printed on making ground floor ceramic dielectric layer on base band or the substrate by casting film-forming or grid; Second step is printed on electrocondution slurry on the ceramic dielectric layer by silk screen printing and forms electrode pattern in the ground floor; Third step is made second layer ceramic dielectric layer on the electrode pattern in ground floor; The 4th step, by displacement be printed on the second ceramic dielectric layer form with ground floor in electrode pattern in the second layer of electrode pattern dislocation; The 5th step is carried out first step the 4th step repeatedly, forms the ceramic duplexer of predetermined number of layers; The 6th step is cut the chip that ceramic stacked body forms preliminary dimension; The 7th step, the sintering chip forms ceramic sintered bodies; The 8th step is made external electrode in two ends of ceramic sintered bodies.
Fig. 3 illustrates traditional web plate design drawing of electrode pattern printing in a kind of being used for.On web plate, be formed with a plurality of web plate patterns 21 and along line of cut 22a, the 22b of transversely arranged and vertical arrangement.Web plate pattern 21 has predetermined length and width.A plurality of web plate patterns 21 are staggered and make and have predetermined spacing along its length and broad ways spacing between the web plate pattern 21.The Design of length of web plate pattern 21 becomes to equal two interior electrode pattern length (comprising slice thickness), spacing along its length between the web plate pattern 21 is designed to equal two " safe edge distance " sizes (comprising slice thickness), also is to have big spacing between the web plate pattern 21 along its length.During printing, electrocondution slurry is by electrode pattern in web plate pattern 21 is on the ceramic dielectric layer.During cutting, cut, electrode pattern in each is cut apart along its length, and the length direction spacing between the interior electrode pattern is cut apart along the centre along line of cut 22a, 22b.
Recently, in order to satisfy the requirement of multilayer ceramic capacitor miniaturization, high-capacitance and high reliability, adopt the method that the attenuation of ceramic dielectric layer thickness, stacked number are increased, and correspondingly the thickness of interior electrode is also made very thin, for example less than 2 μ m.Though interior thickness of electrode is very thin, but still can be in having electrode 12 patterns and do not have in form difference in height between the position of electrode 12 patterns, for ceramic dielectric layer 11 and a lot of duplexer of interior electrode 12 numbers of plies, can be accumulated as bigger thickness difference, thereby make duplexer form the relatively thin shape (being commonly called as bread shape) in middle thicker two ends.Such duplexer causes interior electrode deformation easily, and in not having the part of electrode pattern, the ceramic dielectric interlayer adhesion force is reduced, thereby layering and crack occur.When sintering, be easy to generate faults of construction such as fragmentation, fracture, reduce the reliability and the rate of finished products of goods.
In cutting action, because equipment and operational error, the for example skew of line of cut, or during the thicker duplexer of cutting because end face cutting out of plumb, cause the actual vertically back gauge L of each layer of duplexer to depart from predetermined value, or cause vertical back gauge L of each layer of duplexer inconsistent on thickness direction, can reduce the reliability and the rate of finished products of goods like this.
In the prior art, disclose by on the ceramic dielectric layer, making the benefit identical and tasted layer, thereby eliminated the method that causes the ceramic electron element thickness difference because of interior thickness of electrode with interior thickness of electrode.In some versions, benefit is tasted layer and is adopted and ceramic dielectric layer identical materials, and form respectively with interior electrode, the deficiency of this method is also to need additionally to mend behind the electrode in forming to taste layer making, increases process complexity, reduces production efficiency, and interior electrode and benefit to taste layer material different, shrinkage degree difference during sintering not only is easy to generate faults of construction such as layering, crack, and it is smooth fully to make interior electrode and benefit taste layer.In other schemes, mend and to taste layer and adopt and an interior thickness of electrode identical materials, and make to mend and taste layer and form simultaneously with interior electrode.But, in disclosed document, all do not provide and avoid ceramic stacked body to form thickness difference, make safe edge apart from the goods and the method that are consistent simultaneously, do not provide when solving cutting yet because equipment and operational error cause any enlightenment of safe edge apart from deviation.
Summary of the invention
The purpose of this utility model provides a kind of multilayer ceramic capacitor of avoiding ceramic stacked body to form thickness difference and have consistent safe edge distance.
For this reason, the utility model provides a kind of multilayer ceramic capacitor, comprise by a plurality of ceramic dielectric layers and be formed on the folded duplexer that constitutes of inner electrode layer between the ceramic dielectric layer, and two external electrodes that are connected duplexer longitudinal relative end portion, electrode alternately makes a longitudinal end expose a side end face of duplexer in each layer, and with two external electrodes in one be electrically connected, it is characterized in that: between described ceramic dielectric layer, have layer of compensation, described layer of compensation is arranged on vertical end opposing longitudinal edges position with described interior electrode pattern, described layer of compensation is made by electric conducting material and is identical with described interior thickness of electrode, the described interior electrode of described layer of compensation and same layer is electrically connected with described two external electrodes respectively, and have predetermined longitudinal separation between them, the described longitudinal separation between described layer of compensation of each layer and the described interior electrode is identical.
Best, described layer of compensation is by making with described interior electrode identical materials and forming simultaneously with described interior electrode.
Best, the width of described layer of compensation is identical with the width of described interior electrode.
The multilayer ceramic capacitor that the utility model provides owing to have following characteristics, can overcome the deficiency that prior art exists:
Because being in of layer of compensation, can avoid in having electrode pattern and do not have in cause difference in height between the position of electrode pattern, thereby prevent that effectively duplexer from forming the relatively thin shape in middle thicker two ends, overcome the fault of construction that causes thus, improve rate of finished products.
Because layer of compensation and be electrically connected with two external electrodes respectively and have predetermined longitudinal separation between them with an electrode in the layer, longitudinal separation between each layer layer of compensation and the interior electrode is identical, make to have consistent " safe edge apart from " between the different in nature electrode of capacitor, can obtain high reliability.
Because layer of compensation exists, the external electrode material can not spread in the ceramic dielectric layer during sintering, the longitudinal separation of layer of compensation and interior electrode can than traditional design be worth half as large more than, can make ceramic dielectric press the back to keep evenness layer by layer, electrode extrusion in avoiding.
The multilayer ceramic capacitor that the utility model provides, can make by the following method:
On the ceramic dielectric layer, form a plurality of electrocondution slurry printed patterns by screen printing, make a plurality of printed patterns broad wayss and have predetermined Width spacing and length direction spacing between alignment and the described printed patterns mutually along its length;
Close by the ceramic dielectric that will be formed with described printed patterns is stacked, make the ceramic duplexer of predetermined number of layers;
By cutting the duplexer unit that the stacked body of described pottery forms preliminary dimension along the line of cut that is arranged on Width and the length direction, wherein make each printed patterns be divided into interior electrode pattern and layer of compensation pattern along its length along the line of cut cutting of arranging in the longitudinal direction, and two printed patterns that make each duplexer unit comprise adjacent arrangement are along its length cut apart formation, have the interior electrode pattern and the layer of compensation pattern of predetermined length direction spacing, the interior electrode pattern of each duplexer unit and layer of compensation pattern expose the length direction opposing end surface of duplexer respectively;
The described duplexer of sintering unit, and form two external electrodes at the end face of described duplexer unit, and make described two external electrodes taste layer with the interior electrode of described duplexer unit and benefit respectively to be electrically connected.
Cut described ceramic duplexer preferably along cut with the position of an Edge Distance preliminary dimension of described printed patterns length direction, with electrode pattern in each described pattern is divided into along its length and layer of compensation pattern.
This manufacture method has following characteristics:
Adopt unique web plate design, and make each printed patterns be divided into interior electrode pattern and layer of compensation pattern by cutting.Layer of compensation and interior electrode are manufactured from the same material, also form simultaneously, need not increase the step of printing layer of compensation extraly.
Because the cutting of printed patterns length direction is along carrying out with the position of its lengthwise edge preset distance size, but not in the middle of the length direction spacing of two adjacent printed patterns, therefore the interior electrode pattern that comprises of each duplexer unit and layer of compensation pattern have predetermined length direction spacing, this spacing is the fixed dimension that printing forms, irrelevant with cutting, can be because of equipment and operational error do not produce deviation, therefore can make between each layer of each duplexer unit and each duplexer unit to have consistent safe edge distance.
Adopt existing processing step, utilize existing equipment, can carry out automation and produce in a large number, speed of production is fast.
In order more to clearly reveal content of the present utility model, describe below in conjunction with specific embodiment.
Description of drawings
Fig. 1 is the cutaway view of known multilayer ceramic capacitor along its length direction.
Fig. 2 is ceramic dielectric layer plane view in the known multilayer ceramic capacitor, the layout of electrode on this ceramic dielectric layer in illustrating.
Fig. 3 is when making known multilayer ceramic capacitor, a kind of web plate design drawing of electrode pattern in being used to print.
Fig. 4 is the cutaway view of the multilayer ceramic capacitor that provides of the utility model along its length direction.
Fig. 5 is ceramic dielectric layer plane view in the multilayer ceramic capacitor that provides of the utility model, electrode and the layout of layer of compensation on this ceramic dielectric layer in illustrating.
Fig. 6 is when making the multilayer ceramic capacitor that the utility model provides, a kind of web plate design drawing of electrode pattern and layer of compensation pattern in being used to print.
Embodiment
With reference to Fig. 4 and Fig. 5, multilayer ceramic capacitor, comprise by a plurality of ceramic dielectric layers 31 and be formed on folded duplexers that constitute of inner electrode layer 32 between the ceramic dielectric layer and two external electrode 33a, 33b that are connected duplexer longitudinal relative end portion, in each layer electrode 32 alternately make a longitudinal end expose duplexer a side end face and with two external electrode 33a, 33b in one be electrically connected.Between ceramic dielectric layer 31 and with one of interior electrode pattern vertically end opposing longitudinal edges position be provided with layer of compensation 34.Layer of compensation 34 and interior electrode 32 thickness, width are all identical.Layer of compensation 34 is by making with interior electrode 32 identical materials and forming simultaneously with interior electrode 32.The interior electrode 32 of layer of compensation 34 and same layer is electrically connected with two external electrode 33a, 33b respectively.Has predetermined longitudinal separation L between layer of compensation 34 and the interior electrode 32
a, this longitudinal separation L
aBe the safe edge distance.Longitudinal separation L between layer of compensation of each layer and the interior electrode
aIdentical.
Multilayer ceramic capacitor adopts following method manufacturing:
At first, carry out the web plate design, and according to the web plate that designs and produces printing usefulness.
The plane design drawing of web plate is formed with a plurality of web plate patterns 41 and arranges and (web plate pattern length direction) line of cut 42a, 42b of arranging along the longitudinal direction along horizontal direction (web plate pattern width direction) as shown in Figure 6 on web plate.L1, W1 are respectively the length and the width of the active zone of web plate, and its size should be set according to actual process, simultaneously should be than the little 3-4cm of actual printed material size, to reduce the bad product quality problem that causes of edge situation.
Each web plate pattern 41 has predetermined width, length W
0, L
0After printing, cutting, W
0The width of electrode pattern and layer of compensation pattern in forming, L
0Be interior electrode pattern and layer of compensation pattern length and.
A plurality of web plate patterns 41 are along horizontal direction and alignment mutually along the longitudinal direction.Along the spacing between two web plate patterns 41 of horizontal direction is W
2, the spacing between two web plate patterns 41 is L along the longitudinal direction
2After printing, cutting, W
2Half form in the width side of electrode pattern and layer of compensation pattern stay the limit.L
2Safe edge in forming between electrode pattern and the layer of compensation pattern is apart from L
a
Line of cut 42a and two web plate patterns 41 are overlapping along the bisector of horizontal direction spacing, and the spacing of two line of cut 42a is W
3Line of cut 42b by with an Edge Distance L of web plate pattern 41 length directions
4The position, the spacing of two line of cut 42a is L
3After printing, cutting, each web plate pattern 41 is divided into an interior electrode pattern and a layer of compensation pattern at line of cut 42b.
Mandatory declaration be that the factors such as bit errors the when shift error the when design size of web plate should be according to the actual size printing that requires behind the shrinkage of ceramic medium material, cutting blade thickness, the sintering to reach, cutting are calculated.
During design, the translocation distance in the time of also should calculating the displacement printing according to the web plate design size.The calculating of translocation distance can be adopted following formula: translocation distance=(L
2+ 2 * L
4).Certainly, also can adopt distinct methods to calculate shift value as required, but when follow-up cutting, just can not cut, and need on the basis of original line of cut, carry out translation by original line of cut.
Then, make according to following steps:
First step is printed on making ground floor ceramic dielectric layer on base band or the substrate by known casting film-forming or grid;
Second step is used web plate shown in Figure 6 that electrocondution slurry is printed on the ceramic dielectric layer and is formed the ground floor printed patterns, scraper or roll roller and move along A-A direction among Fig. 6 during printing;
Third step is made second layer ceramic dielectric layer on the ground floor printed patterns;
The 4th step is printed on the second layer printed patterns that forms on the second ceramic dielectric layer with the dislocation of ground floor printed patterns by displacement, moves the translocation distance of setting along A-A direction among Fig. 6 during the displacement printing;
The 5th step is carried out first step the 4th step repeatedly, forms the ceramic duplexer of predetermined number of layers;
The 6th step, the line of cut 42b that arranges line of cut 42a and arrangement along the longitudinal direction along horizontal direction cuts the chip that ceramic stacked body forms preliminary dimension, electrode pattern and layer of compensation pattern in wherein each printed patterns being divided into along its length along line of cut 42b cutting, and two printed patterns that make each duplexer unit comprise adjacent arrangement are along its length cut apart formation, are had fixing length direction spacing L
aInterior electrode pattern and layer of compensation pattern, the interior electrode pattern of each duplexer unit and layer of compensation pattern expose the length direction opposing end surface of duplexer respectively;
The 7th step, the sintering chip forms ceramic sintered bodies;
The 8th step is made external electrode in two ends of ceramic sintered bodies, and makes described two external electrodes taste layer with the interior electrode of described duplexer unit and benefit respectively to be electrically connected.
Can be made into multilayer ceramic capacitor thus with Fig. 4 and Fig. 5 structure.
The above only is a preferred embodiment of the present utility model, and this is not the restriction to the utility model content.For a person skilled in the art, other similar changes and improvements can also be arranged.All modification, replacement and changes of having done under principle of the present utility model and design are evolved, and all belong to the scope of the utility model protection.
Claims (3)
1. multilayer ceramic capacitor, comprise by a plurality of ceramic dielectric layers and be formed on the folded duplexer that constitutes of inner electrode layer between the ceramic dielectric layer, and two external electrodes that are connected duplexer longitudinal relative end portion, electrode alternately makes a longitudinal end expose a side end face of duplexer in each layer, and with two external electrodes in one be electrically connected, it is characterized in that: between described ceramic dielectric layer, have layer of compensation, described layer of compensation is arranged on vertical end opposing longitudinal edges position with described interior electrode pattern, described layer of compensation is made by electric conducting material and is identical with described interior thickness of electrode, the described interior electrode of described layer of compensation and same layer is electrically connected with described two external electrodes respectively, and have predetermined longitudinal separation between them, the described longitudinal separation between described layer of compensation of each layer and the described interior electrode is identical.
2. multilayer ceramic capacitor according to claim 1 is characterized in that: described layer of compensation is by making with described interior electrode identical materials and forming simultaneously with described interior electrode.
3. multilayer ceramic capacitor according to claim 1 is characterized in that: the width of described layer of compensation is identical with the width of described interior electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201564430U CN201015101Y (en) | 2006-12-05 | 2006-12-05 | Multilayer ceramic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201564430U CN201015101Y (en) | 2006-12-05 | 2006-12-05 | Multilayer ceramic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201015101Y true CN201015101Y (en) | 2008-01-30 |
Family
ID=39026899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201564430U Expired - Lifetime CN201015101Y (en) | 2006-12-05 | 2006-12-05 | Multilayer ceramic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201015101Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102683023A (en) * | 2012-05-24 | 2012-09-19 | 成都实时技术实业有限公司 | Method for preparing high-power microwave chip type multilayer ceramic dielectric capacitor |
-
2006
- 2006-12-05 CN CNU2006201564430U patent/CN201015101Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102683023A (en) * | 2012-05-24 | 2012-09-19 | 成都实时技术实业有限公司 | Method for preparing high-power microwave chip type multilayer ceramic dielectric capacitor |
| CN102683023B (en) * | 2012-05-24 | 2015-02-11 | 成都市贡峰电子有限公司 | Method for preparing high-power microwave chip type multilayer ceramic dielectric capacitor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1667766B (en) | Laminated ceramic capacitor | |
| KR101645399B1 (en) | Monolithic ceramic capacitor | |
| KR101762032B1 (en) | Multi-layer ceramic electronic part and method for manufacturing the same | |
| CN103247441B (en) | The manufacture method of laminated ceramic capacitor and laminated ceramic capacitor | |
| KR101922863B1 (en) | Laminated ceramic electronic component and manufacturing method threreof | |
| JP4501437B2 (en) | Multilayer ceramic capacitor and manufacturing method thereof | |
| EP0971379A3 (en) | Inductor device and process of production thereof | |
| CN115764227B (en) | Preparation method of three-terminal multilayer ceramic capacitor filter green chip | |
| CN201015101Y (en) | Multilayer ceramic capacitor | |
| JP4623305B2 (en) | Manufacturing method of laminated electronic component | |
| CN114255994A (en) | Multilayer ceramic capacitor | |
| JP4502130B2 (en) | Manufacturing method of laminated electronic component | |
| US20120151763A1 (en) | Method of manufacturing multilayer ceramic electronic component and multilayer ceramic electronic component using the same | |
| CN110335767B (en) | Screen printing equipment for multilayer ceramic capacitor and preparation method thereof | |
| JP2966873B2 (en) | Capacitor and manufacturing method thereof | |
| JP4082610B2 (en) | Ceramic substrate and manufacturing method thereof | |
| CN101197210A (en) | Multilayer ceramic capacitor and manufacturing method thereof | |
| JP5869335B2 (en) | Multilayer capacitor | |
| US7440256B2 (en) | Laminated ceramic substrate and manufacturing method therefor | |
| JP2009130247A (en) | Lamination chip capacitor | |
| JP4419718B2 (en) | Method for producing gravure printing plate and multilayer ceramic electronic component | |
| JPH03246917A (en) | Manufacture of laminated ceramic capacitor | |
| JPH03129811A (en) | Manufacture of laminated capacitor | |
| TWI265532B (en) | Method for making a passive device | |
| JP5851901B2 (en) | Multilayer capacitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: FUJIAN TORCH ELECTRONIC TECHNOLOGY CO., LTD. Free format text: FORMER NAME: QUANZHOU HUOJU ELECTRONIC ELEMENT FACTORY |
|
| CP03 | Change of name, title or address |
Address after: 362000 Torch Development Zone, Licheng District, Fujian, Quanzhou Patentee after: Fujian Torch Electron Technology Co., Ltd. Address before: 362000 Torch Industrial Zone, Jiangnan, Fujian, Quanzhou Patentee before: Quanzhou Huoju Electronic Element Factory |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080130 |
|
| EXPY | Termination of patent right or utility model |