CN101273421B - Ceramic electronic part - Google Patents
Ceramic electronic part Download PDFInfo
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- CN101273421B CN101273421B CN2006800354071A CN200680035407A CN101273421B CN 101273421 B CN101273421 B CN 101273421B CN 2006800354071 A CN2006800354071 A CN 2006800354071A CN 200680035407 A CN200680035407 A CN 200680035407A CN 101273421 B CN101273421 B CN 101273421B
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- 239000000919 ceramic Substances 0.000 title claims abstract description 263
- 239000004020 conductor Substances 0.000 claims abstract description 59
- 239000010410 layer Substances 0.000 claims description 92
- 239000011229 interlayer Substances 0.000 claims description 11
- 101100513612 Microdochium nivale MnCO gene Proteins 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000006103 coloring component Substances 0.000 abstract description 5
- 238000009792 diffusion process Methods 0.000 abstract description 3
- 239000003550 marker Substances 0.000 abstract 2
- 230000005764 inhibitory process Effects 0.000 abstract 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 1
- 238000003475 lamination Methods 0.000 abstract 1
- 239000011656 manganese carbonate Substances 0.000 abstract 1
- 235000006748 manganese carbonate Nutrition 0.000 abstract 1
- 229910000016 manganese(II) carbonate Inorganic materials 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 21
- 239000002002 slurry Substances 0.000 description 21
- 239000000843 powder Substances 0.000 description 13
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000005755 formation reaction Methods 0.000 description 7
- 239000002904 solvent Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 241000446313 Lamella Species 0.000 description 5
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- WUOACPNHFRMFPN-SECBINFHSA-N (S)-(-)-alpha-terpineol Chemical compound CC1=CC[C@@H](C(C)(C)O)CC1 WUOACPNHFRMFPN-SECBINFHSA-N 0.000 description 2
- 239000001856 Ethyl cellulose Substances 0.000 description 2
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- OVKDFILSBMEKLT-UHFFFAOYSA-N alpha-Terpineol Natural products CC(=C)C1(O)CCC(C)=CC1 OVKDFILSBMEKLT-UHFFFAOYSA-N 0.000 description 2
- 229940088601 alpha-terpineol Drugs 0.000 description 2
- 229920001249 ethyl cellulose Polymers 0.000 description 2
- 235000019325 ethyl cellulose Nutrition 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241001269238 Data Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G7/00—Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
- H01G7/06—Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture having a dielectric selected for the variation of its permittivity with applied voltage, i.e. ferroelectric capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/30—Stacked capacitors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Coils Or Transformers For Communication (AREA)
- Ceramic Capacitors (AREA)
Abstract
A ceramic electronic part that permits identifying of the orientation of the ceramic electronic part through the use of a marker provided thereinside, and that avoids drop of reliability through inhibition of any diffusion of coloring component from the marker. Stator (101) constituting part of a trimmer condenser is disposed between ceramic sintered body (103) composed of, superimposed one upon another, multiple ceramic layers (102) and ceramic layer (102).; The stator (101) includes internal conductor (104) drawn out to a side face of the ceramic sintered body (103); external conductor (105a) provided on a side face of the ceramic sintered body (103) and electrically connected to the internal conductor (104); external conductor (105b) provided on a side face of the ceramic sintered body(103) opposite to the side face provided with the external conductor (105a); and black ceramic layer (106) disposed between ceramic layers (102). The black ceramic layer (106) contains an Mn oxide and an Fe oxide in a weight ratio of 3:2 to 1:3 in terms of MnCO3 and Fe2O3, respectively. The internal conductor (104) and the black ceramic layer (106) are arranged in such a fashion that in the direction of ceramic layer (102) lamination, they substantially do not overlap each other.
Description
Technical field
The present invention relates to because of assembling, the ceramic electron element of the direction need recognition component is installed, in more detail, relate to the ceramic electron element of the trimmer capacitor and so on of inner conductor biasing.
Background technology
Fig. 7 is existing trimmer capacitor general profile chart.As shown in Figure 7, trimmer capacitor 500 possesses stator 501, the ceramic sintered bodies 503 that this stator 501 is laminated by a plurality of ceramic layers 502, is configured in the interlayer of ceramic layer 502 and is drawn out to the inner conductor 504 of side of ceramic sintered bodies 503 and external conductor 505a, the 505b that is formed on the side of ceramic sintered bodies 503 constitutes.Metal rotor 507 is configured in the top of stator 501, is formed on the terminal electrode 508 of rotor 507 bottoms and the upper surface of projection 509 and ceramic sintered bodies 503 and joins.Crown cap 511 covers rotor 507 through spring shim 510.On the side of ceramic sintered bodies 503, the terminal 512 that the part of crown cap 511 extends to form is electrically connected externally on the conductor 505b.Crown cap 511 is provided with through hole 513, can insert screwdriver in the screwdriver slot that is formed on the rotor 507 by this through hole 513.
In trimmer capacitor 500, between inner conductor 504 and terminal electrode 508, form capacitance, if but, just can not form desirable capacitance the turning upside down of ceramic sintered bodies 503.Therefore, when ceramic sintered bodies 503 and crown cap 511 are joined together, the mark (mark) up and down that is used for discerning ceramic sintered bodies 503 just must be arranged.
For solving such problem, a kind of scheme up and down of discerning ceramic electron element has been proposed in patent documentation 1, be that printing contains TiO between ceramic layer
2And Mn
3O
4Ceramic slurry, sintering forms mark then.
Patent documentation 1: real fair 7-47862 communique
But, in patent documentation 1, be formed on the mark and the internal electrode that is formed on the interlayer of ceramic layer of the interlayer of ceramic layer, overlapping on the stacked direction of ceramic layer.Therefore, mark is just thick than other parts with the equitant place of internal electrode, can cause the fault of construction of ceramic sintered bodies.When sintering, coloring components might be diffused into ceramic layer and arrive internal electrode from mark, reduces the reliability of ceramic electron element.
In order to suppress the diffusion of coloring components, can after making ceramic sintered bodies, be formed on mark on the surface of ceramic sintered bodies again, but in this case, as patent documentation 1 is put down in writing, can produce the problems such as bad of installing.
Summary of the invention
For solving the above problems, the object of the present invention is to provide a kind of can be with being formed on the ceramic electron element that inner mark is discerned the directivity of ceramic electron element and suppressed not reduce from the diffusion of the coloring components of mark reliability.
Relate to ceramic electron element of the present invention, possess the multi-disc ceramic layer that contains La oxide and Ti oxide be laminated and have first first type surface, second first type surface and side ceramic sintered bodies, be configured in the interlayer of described ceramic layer and be drawn out to the side of described ceramic sintered bodies inner conductor, be formed on the side of described ceramic sintered bodies and the external conductor that is electrically connected with described inner conductor; At the interlayer of described ceramic layer and more be partial to first first type surface, the one side place of described ceramic sintered bodies than the mid point of the thickness of described ceramic sintered bodies, dispose the black ceramic layer that contains Mn oxide and Fe oxide, this Mn oxide and Fe oxide are pressed MnCO respectively
3Conversion, Fe
2O
3Convert, its weight ratio is 3: 2～1: 3; Described inner conductor and described black ceramic layer are not overlapping on the stacked direction of ceramic layer in fact.
Described inner conductor preferably is configured in second first type surface, the one side place of more being partial to described ceramic sintered bodies than the mid point of the thickness of described ceramic sintered bodies.
In ceramic electron element of the present invention, also can be arranged on terminal electrode the outside of described ceramic sintered bodies, make on its described second first type surface that is connected on described ceramic sintered bodies, and in the face of described inner conductor.
Described terminal electrode is abutted against on described second first type surface of described ceramic sintered bodies slidably.
Described ceramic layer also can be made of medium, and forms capacitance between described inner conductor and described terminal electrode.
Beneficial effect
Among the present invention, the black ceramic layer that contains Mn oxide and Fe oxide constitutes mark, and this Mn oxide and Fe oxide are pressed MnCO respectively
3Conversion, Fe
2O
3Convert, its weight ratio is 3: 2～1: 3.Contained La oxide and the reaction of Ti oxide in Mn oxide that this black ceramic layer is contained and Fe oxide and the adjacent ceramic layer, the result generates LaFe on the interface of black ceramic layer and ceramic layer
4Ti
6O
19Phase.This LaFe
4Ti
6O
19Itself be black mutually,, can be used for preventing that coloring components is diffused in the ceramic layer simultaneously so can assist the colour developing of black ceramic layer.
Because Mn oxide and Fe oxide are pressed MnCO respectively
3Conversion, Fe
2O
3The weight ratio that converts is 3: 2～1: 3, so can develop the color rightly, can prevent the ceramic sintered bodies warpage simultaneously.
Description of drawings
Fig. 1 is the general profile chart and the summary upward view of stator that constitutes the part of the trimmer capacitor in the execution mode 1.
Fig. 2 is the general profile chart with the trimmer capacitor of stator shown in Figure 1 101.
Fig. 3 is the general profile chart and the summary upward view of stator that constitutes the part of the trimmer capacitor in the execution mode 2.
Fig. 4 is the general profile chart with the trimmer capacitor of stator shown in Figure 3 201.
Fig. 5 is the general profile chart of the used ceramic sintered bodies of experimental example 1.
Fig. 6 is the general profile chart of the used ceramic laminated body that does not burn till of experimental example 2.
Fig. 7 is the general profile chart of existing trimmer capacitor.
Symbol description
100 trimmer capacitors (ceramic electron element)
101 stators
102 ceramic layers
103 ceramic sintered bodies
104 inner conductors
105a, 105b external conductor
106 black ceramic layers
200 trimmer capacitors (ceramic electron element)
201 stators
202 ceramic layers
203 ceramic sintered bodies
204a, 204b inner conductor
205a, 205b external conductor
206 black ceramic layers
303 ceramic sintered bodies
304 inner conductors
306 black ceramic layers
Embodiment
(execution mode 1)
Fig. 1 is the general profile chart and the summary upward view of stator that constitutes the part of the trimmer capacitor in the execution mode 1.As shown in Figure 1, stator 101 possess ceramic sintered bodies 103 that a plurality of ceramic layers 102 are laminated, be configured in the interlayer of ceramic layer 102 and be drawn out to the side of ceramic sintered bodies 103 inner conductor 104, be formed on the side of ceramic sintered bodies 103 and the external conductor 105a that is electrically connected mutually with inner conductor 104, with the black ceramic layer 106 of external conductor 105b that on relative side, the side that has formed external conductor 105a on the ceramic sintered bodies 103, forms and the interlayer that is configured in ceramic layer 102.
As shown in Figure 1, inner conductor 104 preferably is set at bottom surface one side of more being partial to ceramic sintered bodies 103 than the mid point of the thickness of ceramic sintered bodies 103 (distance from top to the bottom surface), like this, just forms capacitance easily in trimmer capacitor described later.
For example can use gold, silver, copper, palladium, silver/palldium alloy, nickel etc. as inner conductor 104 materials.
As external conductor 105a, 105b, can adopt for example gold, silver, palladium, silver/palldium alloy etc.
Black ceramic layer 106 is as the mark up and down of indication ceramic sintered bodies 103, because be black, so even if ceramic sintered bodies 103 is made of the pottery of heavy colour such as green or dark brown, also can be used as mark and identified.As shown in Figure 1, can clearly discern the color demonstration of black ceramic layer 106 from the bottom surface of ceramic sintered bodies 103.Though not shown, but the color of seeing black ceramic layer 106 above ceramic sintered bodies 103 perhaps be can't see black ceramic layer 106 fully than it seems lightly from the bottom surface.According to the difference of the color of seeing, just can differentiate bottom surface one side (first first type surface, one side) that is positioned at ceramic sintered bodies 103 for black ceramic layer 106.
Black ceramic layer 106 contains Mn oxide and Fe oxide, and this Mn oxide and Fe oxide are pressed MnCO respectively
3Conversion, Fe
2O
3Convert, its weight ratio is 3: 2～1: 3.If compare with this ratio, the Mn oxide is many and the Fe oxide is few, and ceramic sintered bodies 103 just might be out of shape, and perhaps the Mn oxide too spreads, and causes above ceramic sintered bodies 103 also black ceramic layer 106 to be identified.On the other hand, if compare with this ratio, the Mn oxide is few and the Fe oxide is many, and the colour developing of black is just strong excessively, so also might identify black ceramic layer 106 above ceramic sintered bodies 103.
For example, make stator 101 as follows.At first, the ceramic glaze slip that ceramic powders, organic bond and solvent are got up is configured as sheet, burns till the back and makes the non-sintered ceramic base sheet that constitutes ceramic layer 102.
Then, metal dust, organic bond and solvent are got up, produce and burn till the conductivity slurries that the back constitutes inner conductor 104, and be printed on the non-sintered ceramic base sheet.The ceramic powders, organic bond and the solvent that contain La oxide and Ti oxide, make the ceramic slurry that constitutes the black ceramic layer 106 after burning till, and be printed on the non-sintered ceramic base sheet again.At this moment, the ratio of the ceramic powders in the ceramic slurry 30～70 weight % preferably.Under the situation that is lower than 30 weight %, it is insufficient to develop the color; Surpass under the situation of 70 weight %, the making of slurry is just very difficult.
Then, non-sintered ceramic base lamella is gathered into folds, make the ceramic laminated body that does not burn till; Then the ceramic laminated body that does not burn till is burnt till, and the ceramic laminated body after obtaining burning till; Then, metal dust, organic bond and solvent are got up, produce and burn till the conductivity slurries that the back constitutes external conductor 105a, 105b, on the side of the ceramic laminated body of conductivity slurries sintering after burning till, thereby form external conductor 105a, 105b.
Fig. 2 is to use the general profile chart of the trimmer capacitor of stator shown in Figure 1 101.As shown in Figure 2, in trimmer capacitor 100, metal rotor 107 is configured in stator 101 tops, the terminal electrode 108 and the projection 109 that are formed on rotor 107 bottoms contact with first first type surface of ceramic sintered bodies 103.Crown cap 111 covers rotor 107 through spring shim 110.The terminal 112 that the part of crown cap 111 extends to form is electrically connected with external conductor 105b on the side of ceramic sintered bodies 103, crown cap 111 is provided with through hole 113, and screwdriver just is inserted in the screwdriver slot 114 that forms on the rotor 107 by this through hole 113.
In trimmer capacitor 100, between inner conductor 104 and terminal electrode 108, form capacitance, to rotate with screwdriver and adjust rotor 107, capacitance just changes.
When making trimmer capacitor 100, begin to carry out successively mounting from the below by crown cap 111, spring shim 110, rotor 107, stator 101, and external conductor 105a and terminal 112 are welded.At this moment, if mistaken up and down stator 101 just can not form desirable capacitance,, come mounting stator 101 so will make second first type surface that black ceramic layer 106 can discern up.
In the present embodiment, example goes out the material of media ceramic as formation ceramic layer 102, constitutes ceramic layer 102 but also can wait with resistive element or semiconductive ceramic.In this case, only use structure shown in Figure 1, also can make pellet resistance or flake thermistor.The mark of discerning usefulness up and down when at this moment, black ceramic layer 106 is installed as substrate.Constituting under the situation of ceramic layer 102 with resistive element,, just can be used as variable resistance as long as adopt structure shown in Figure 2.
(execution mode 2)
Fig. 3 is the general profile chart and the summary upward view of stator that constitutes the part of the trimmer capacitor in the present embodiment.As shown in Figure 3, stator 201 possess ceramic sintered bodies 203 that a plurality of ceramic layers 202 are laminated, be configured in the interlayer of ceramic layer 202 and be drawn out to the side of ceramic sintered bodies 203 inner conductor 204a, 204b, be formed on the side of ceramic sintered bodies 203 and the black ceramic layer 206 of the external conductor 205a, the 205b that are electrically connected with inner conductor 204a, 204b respectively and the interlayer that is configured in ceramic layer 202.
In the configuration of internal electrode and black ceramic layer, the stator in the present embodiment is different from execution mode 1, and other formations are identical with execution mode 1, and omit its explanation.
Fig. 4 is the general profile chart with the trimmer capacitor of stator shown in Figure 3 201.As shown in Figure 4, in trimmer capacitor 200, metal rotor 207 is configured in stator 201 tops, the terminal electrode 208 and the projection 209 that are formed on rotor 207 bottoms contact with first first type surface of ceramic sintered bodies 203.Crown cap 211 covers rotor 207 through spring shim 210.Crown cap 211 is provided with through hole 213, and screwdriver just is inserted in the screwdriver slot 214 that forms on the rotor 207 by this through hole 213.
In trimmer capacitor 200, between inner conductor 204a, 204b and terminal electrode 208, form capacitance, to rotate with screwdriver and adjust rotor 207, capacitance just changes.
Aspect the formation position of the structure of the configuration of the configuration of internal electrode, black ceramic layer, rotor and capacitance, the stator in the present embodiment is different from execution mode 1, and other formations are identical with execution mode 1, and omit its explanation.
In the present embodiment, example goes out the material of media ceramic as formation ceramic layer 202, constitutes ceramic layer 202 but also can wait with resistive element or semiconductive ceramic.In this case, only use structure shown in Figure 3, also can make pellet resistance or flake thermistor.The mark of discerning usefulness up and down when at this moment, black ceramic layer 206 is installed as substrate.Constituting under the situation of ceramic layer 202 with resistive element,, just can be used as variable resistance as long as adopt structure shown in Figure 3.
Experimental example 1
Verify the influence that the component of black ceramic layer produces with this experimental example.
At first, prepare CaO-La
2O
3-TiO
2-Nd
2O
3Be that ceramic powders (presenting green after burning till) is as ceramic powders; Then, ceramic powders and solvent (ethyl acetate) and organic bond (allyl resin) are mixed the making ceramic slurry, be configured as sheet with doctor-blade casting process again, thereby make the non-sintered ceramic base sheet of thickness 20 μ m.
Then, prepare the Pd powder, prepare the α terpineol, prepare ethyl cellulose, they are mixed make the inner conductor slurries as organic bond as solvent as metal dust.
Below, the component shown in following table 1 is such, weighing MnCO
3, Fe
2O
3With organic vehicle, make the ceramic slurry of black ceramic layer usefulness.Use the α terpineol as the solvent that is contained in organic vehicle, use ethyl cellulose as organic bond.
Then, inner conductor slurries or black ceramic layer slurries are printed on the predetermined non-sintered ceramic base sheet, again multi-disc non-sintered ceramic base lamella are gathered into folds, make the ceramic duplexer that does not burn till.
Then, the ceramic duplexer that does not burn till (keeping 2 hours) under atmospheric atmosphere, 1240 ℃ firing temperature is burnt till, make the test portion 1～11 of the ceramic sintered bodies shown in the following table 1.
[table 1]
| The test portion numbering | MnCO 3(weight %) | ?Fe 2O 3(weight %) | MnCO 3∶Fe 2O 3 | Organic vehicle (weight %) | Colour developing | Impregnability | Warpage |
| *1 | 40 | ?0 | 1∶0 | 60 | ○ | × | × |
| *2 | 30 | ?10 | 3∶1 | 60 | ○ | × | × |
| *3 | 26.7 | ?13.3 | 2∶1 | 60 | ○ | × | × |
| 4 | 24 | ?16 | 3∶2 | 60 | ○ | ○ | ○ |
| 5 | 20 | ?20 | 1∶1 | 60 | ○ | ○ | ○ |
| 6 | 35 | ?35 | 1∶1 | 30 | ○ | ○ | ○ |
| 7 | 15 | ?15 | 1∶1 | 70 | ○ | ○ | ○ |
| 8 | 16 | ?24 | 2∶3 | 60 | ○ | ○ | ○ |
| 9 | 13.3 | ?26.7 | 1∶2 | 60 | ○ | ○ | ○ |
| 10 | 10 | ?30 | 1∶3 | 60 | ○ | ○ | ○ |
| *11 | 0 | ?40 | 0∶1 | 60 | ○ | × | ○ |
* beyond the claim scope of the present invention
Fig. 5 is the general profile chart of the ceramic sintered bodies in this experimental example.As shown in Figure 5, ceramic sintered bodies 303 possesses inner conductor 304 and black ceramic layer 306 in inside.On Fig. 5, for simplicity, do not illustrate each layer ceramic layer respectively.
The size of each test portion of ceramic sintered bodies is 4.9mm * 4.8mm * 1.2mm; In each test portion, the black ceramic layer is configured on the position of the upper surface 0.02mm of ceramic sintered bodies.
Then, to each test portion evaluation colour developing, impregnability with put upside down situation, it the results are shown in table 1.
For colour developing, be evaluated as zero from the bottom surface (first first type surface) of ceramic sintered bodies with what can discern the black ceramic layer soon, can not discern being evaluated as of black ceramic layer *.
For impregnability, be evaluated as zero from the upper surface (first first type surface) of ceramic sintered bodies with what fail to discern the black ceramic layer soon, can discern being evaluated as of black ceramic layer *.
For warpage, the difference in height at side in the ceramic sintered bodies and center less than 0.5mm be evaluated as zero, greater than being evaluated as of 0.5mm *.
As known from Table 1, for test portion 4～10, colour developing, impregnability and warpage can both obtain good result.On the other hand, for test portion 1～3, because the Mn composition adds too much, so poor with the evaluation of putting upside down to impregnability.For test portion 11, because the Fe composition adds too much, so the colour developing of black is too strong, therefore, the evaluation of impregnability is poor.
Experimental example 2
Verify the influence that the formation position of black ceramic layer produces with this experimental example.
At first, prepare CaO-La
2O
3-TiO
2-Nd
2O
3Be ceramic powders (presenting green after burning till) and BaO-TiO
2-La
2O
3-Nd
2O
3Be that ceramic powders (presenting dark brown after burning till) is as ceramic powders; With these ceramic powders to make the non-sintered ceramic base sheet of two kinds of thickness, 20 μ m with the same method of experimental example 1.
Then, prepare to have the ceramic slurry of the black ceramic layer usefulness of the same component of the test portion made with experimental example 15, this ceramic slurry is printed on respectively on two kinds of non-sintered ceramic base sheets, the applied thickness of ceramic slurry is 5 μ m.
In this experimental example, change the stacked position of the non-sintered ceramic base sheet of the ceramic slurry of having printed black ceramic layer usefulness, make a plurality of ceramic laminated bodies that do not burn till thus.Fig. 6 is the general profile chart of the used ceramic laminated body that does not burn till of this experimental example.As shown in Figure 6, the ceramic laminated body 403 that does not burn till possesses the ceramic slurry 406 of black ceramic layer usefulness in inside, still, because inner conductor and this experiment are irrelevant, so do not form inner conductor.On Fig. 6, for simplicity, do not illustrate each sheet non-sintered ceramic base sheet respectively.
As shown in Figure 6, be located on the thickness direction of the ceramic laminated body 403 that does not burn till, the distance of the ceramic slurry 406 from upper surface 403a to black ceramic layer usefulness is X (μ m), and the distance from the ceramic slurry 406 of black ceramic layer usefulness to bottom surface 403b is Y (μ m).The thickness of the ceramic laminated body 403 that does not burn till is 1.2mm.
On Fig. 6, for simplicity, show the distance of mid point of thickness direction of the ceramic slurry 406 of black ceramic layer usefulness, but, be that the thickness (50 μ m) that multiply by non-sintered ceramic base sheet is obtained distance X with the sheet number to the non-sintered ceramic base sheet of the part position of the ceramic slurry 406 that forms black ceramic layer usefulness in the reality.The distance that whole thickness 1200 μ m deduct X is Y.
As shown in table 2 below, change distance X and also non-sintered ceramic base lamella is gathered into folds, make a plurality of ceramic laminated bodies that do not burn till thus.When making the ceramic laminated body that does not burn till, non-sintered ceramic base lamella of the same race is gathered into folds.Burn till the ceramic laminated body that these do not burn till by the condition identical, thereby make the test portion 21～46 of the ceramic sintered bodies shown in the table 2 with experimental example 1.
[table 2]
| The test portion numbering | Ceramic sintered bodies | X(μm) | Y(μm) | |X-Y| | X/Y | X∶Y | Show the identification possibility | Top and bottom identification possibility |
| 21 | A | 50 | 1150 | 1100 | 0.04 | 1∶23 | ○ | ○ |
| 22 | A | 100 | 1100 | 1000 | 0.09 | 1∶11 | ○ | ○ |
| 23 | A | 200 | 1000 | 800 | 0.20 | 1∶5 | ○ | ○ |
| 24 | A | 250 | 950 | 700 | 0.26 | 5∶19 | ○ | ○ |
| 25 | A | 300 | 900 | 600 | 0.33 | 1∶3 | ○ | ○ |
| 26 | A | 400 | 800 | 400 | 0.50 | 1∶2 | ○ | ○ |
| 27 | A | 450 | 750 | 300 | 0.60 | 3∶5 | ○ | ○ |
| 28 | A | 500 | 700 | 200 | 0.71 | 5∶7 | ○ | ○ |
| 29 | A | 550 | 650 | 100 | 0.85 | 11∶13 | ○ | △ |
| *30 | A | 600 | 600 | 0 | 1.00 | 1∶1 | △ | × |
| 31 | A | 650 | 550 | 100 | 1.18 | 13∶11 | ○ | △ |
| 32 | A | 700 | 500 | 200 | 1.40 | 7∶5 | ○ | ○ |
| 33 | B | 50 | 1150 | 1100 | 0.04 | 1∶23 | ○ | ○ |
| 34 | B | 100 | 1100 | 1000 | 0.09 | 1∶11 | ○ | ○ |
| 35 | B | 200 | 1000 | 800 | 0.20 | 1∶5 | ○ | ○ |
| 36 | B | 250 | 950 | 700 | 0.26 | 5∶19 | ○ | ○ |
| 37 | B | 300 | 900 | 600 | 0.33 | 1∶3 | ○ | ○ |
| 38 | B | 400 | 800 | 400 | 0.50 | 1∶2 | ○ | ○ |
| 39 | B | 450 | 750 | 300 | 0.60 | 3∶5 | ○ | ○ |
| 40 | B | 500 | 700 | 200 | 0.71 | 5∶7 | ○ | ○ |
| 41 | B | 550 | 650 | 100 | 0.85 | 11∶13 | △ | △ |
| *42 | B | 600 | 600 | 0 | 1.00 | 1∶1 | × | × |
| 43 | B | 650 | 550 | 100 | 1.18 | 13∶11 | △ | △ |
| 44 | B | 700 | 500 | 200 | 1.40 | 7∶5 | ○ | ○ |
* outside the claim of the present invention
In the table 2, ceramic sintered bodies A uses CaO-La
2O
3-TiO
2-Nd
2O
3It is the ceramic sintered bodies of the green made of ceramic powders; Ceramic sintered bodies B uses BaO-TiO
2-La
2O
3-Nd
2O
3It is the dark brown ceramic sintered bodies that ceramic powders is made.
Then, demonstration identification possibility, top and bottom identification possibility in each test portion have been estimated.It the results are shown in table 2.
For showing the identification possibility, above ceramic sintered bodies or bottom surface at least one can reach clearly discern density bullet be evaluated as zero; Can not discern be evaluated as *; Though indeterminate can probably discern be evaluated as △.
For top and bottom identification possibility, above ceramic sintered bodies and the bottom surface all observe, a side who sees from the main surface side that is bordering on a side that has formed the black ceramic layer denseer and can discern density bullet clearly be evaluated as zero; Can not discern be evaluated as *; Though indeterminate can probably discern be evaluated as △.
As known from Table 2, No. 30 test portions are formed on the mid-point of the thickness direction of ceramic sintered bodies to the black ceramic floor, so the both sides color is the same, that is to say can't distinguish above with below.No. 42 test portions are formed on the mid-point of the thickness direction of ceramic sintered bodies to the black ceramic floor, and compare with No. 30 test portions, and the distance from first type surface to the black ceramic layer is longer, so stain mark itself just can not be discerned.
21,29, No. 31 test portions, 33,41, No. 43 test portions all are object datas of the present invention, no matter be that stain mark or above and below can both be identified, still, compare separately as can be known, make the formation position of black ceramic layer far away more, just can clearly discern more from mid point.
In the above-described embodiment, inner conductor on the stacked direction of ceramic layer not with the black ceramic ply.But, for example because the crimping situation difference that non-sintered ceramic base lamella carries out after folding, and the viscosity difference of sintered sheets not, can make the black ceramic layer on direction, have undesirable expansion of prolonging perpendicular to stack direction, also have the overlapping of many and inner conductor.In this case, needing only when constituting ceramic sintered bodies does not have tangible fault of construction, even if inner conductor and black ceramic layer are somewhat overlapping, does not damage effect of the present invention, all within claim scope of the present invention yet.
Claims (6)
1. ceramic electron element possesses:
The a plurality of ceramic layers that contain La oxide and Ti oxide be laminated and have first first type surface, second first type surface and side ceramic sintered bodies,
Be configured in the interlayer of described ceramic layer and be drawn out to described ceramic sintered bodies the side inner conductor and
The external conductor that is formed on the side of described ceramic sintered bodies and is electrically connected with described inner conductor;
More be partial to first first type surface, the one side place of described ceramic sintered bodies at the interlayer of described ceramic layer and than the mid point of the thickness of described ceramic sintered bodies, dispose the black ceramic layer that contains Mn oxide and Fe oxide, this Mn oxide and Fe oxide are pressed MnCO respectively
3Conversion, Fe
2O
3Convert, its weight ratio is 3: 2～1: 3;
Described inner conductor and described black ceramic layer, not overlapping on the stacked direction of ceramic layer.
2. ceramic electron element according to claim 1 is characterized in that, described inner conductor is configured in second first type surface, the one side place of more being partial to described ceramic sintered bodies than the mid point of the thickness of described ceramic sintered bodies.
3. ceramic electron element according to claim 1 and 2 is characterized in that terminal electrode is set at the outside of described ceramic sintered bodies, makes on its described second first type surface that is connected on described ceramic sintered bodies, and in the face of described inner conductor.
4. according to the ceramic electron element of claim 3 record, it is characterized in that described terminal electrode is for to be connected on described second first type surface of described ceramic sintered bodies slidably.
5. according to the ceramic electron element of claim 3 record, it is characterized in that described ceramic layer is made of medium, and forms capacitance between described inner conductor and described terminal electrode.
6. according to the ceramic electron element of claim 4 record, it is characterized in that described ceramic layer is made of medium, and forms capacitance between described inner conductor and described terminal electrode.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP342645/2005 | 2005-11-28 | ||
| JP2005342645 | 2005-11-28 | ||
| PCT/JP2006/316466 WO2007060774A1 (en) | 2005-11-28 | 2006-08-23 | Ceramic electronic part |
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| CN101273421A CN101273421A (en) | 2008-09-24 |
| CN101273421B true CN101273421B (en) | 2011-02-16 |
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| JP (1) | JP4697231B2 (en) |
| CN (1) | CN101273421B (en) |
| TW (1) | TW200721210A (en) |
| WO (1) | WO2007060774A1 (en) |
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| JP6024353B2 (en) * | 2012-10-02 | 2016-11-16 | 株式会社村田製作所 | Multilayer electronic components |
| KR20140071724A (en) * | 2012-12-04 | 2014-06-12 | 삼성전기주식회사 | Multi-layered ceramic electronic component |
| JP5888277B2 (en) | 2013-04-04 | 2016-03-16 | Tdk株式会社 | Black mark composition and electronic component using the same |
| WO2018212119A1 (en) * | 2017-05-15 | 2018-11-22 | 株式会社村田製作所 | Stacked electronic component and method for manufacturing stacked electronic component |
| CN109686695A (en) * | 2018-12-25 | 2019-04-26 | 上海致领半导体科技发展有限公司 | A kind of marker recognition device and method of silicon wafer bearing disk |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1200967A (en) * | 1997-06-02 | 1998-12-09 | 昭荣化学工业株式会社 | Metal powder and preparing method thereof |
| CN1308345A (en) * | 2000-02-09 | 2001-08-15 | 株式会社村田制作所 | Conducting paste and electronic ceramic device |
| CN1503275A (en) * | 2002-11-25 | 2004-06-09 | Tdk��ʽ���� | Conductive composition and ceramic electronic element |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52131146A (en) * | 1976-04-27 | 1977-11-02 | Seiko Instr & Electronics | Trimmer capacitor |
| JPH0747862Y2 (en) * | 1990-09-29 | 1995-11-01 | 太陽誘電株式会社 | Displayed multilayer ceramic electronic components |
| JP2819934B2 (en) * | 1992-04-16 | 1998-11-05 | 株式会社村田製作所 | Electronic component manufacturing method |
| JPH1116701A (en) * | 1997-06-23 | 1999-01-22 | Matsushita Electric Ind Co Ltd | Multiple chip resistor |
-
2006
- 2006-08-16 TW TW095130016A patent/TW200721210A/en not_active IP Right Cessation
- 2006-08-23 WO PCT/JP2006/316466 patent/WO2007060774A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1200967A (en) * | 1997-06-02 | 1998-12-09 | 昭荣化学工业株式会社 | Metal powder and preparing method thereof |
| CN1308345A (en) * | 2000-02-09 | 2001-08-15 | 株式会社村田制作所 | Conducting paste and electronic ceramic device |
| CN1503275A (en) * | 2002-11-25 | 2004-06-09 | Tdk��ʽ���� | Conductive composition and ceramic electronic element |
Non-Patent Citations (2)
| Title |
|---|
| JP实公平7-47862Y2 1995.11.01 |
| JP昭52-131146 1977.11.02 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2007060774A1 (en) | 2009-05-07 |
| WO2007060774A1 (en) | 2007-05-31 |
| CN101273421A (en) | 2008-09-24 |
| JP4697231B2 (en) | 2011-06-08 |
| TWI313015B (en) | 2009-08-01 |
| TW200721210A (en) | 2007-06-01 |
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