EP2612333A2 - Keramisches bauelement und verfahren zur herstellung eines keramischen bauelements - Google Patents
Keramisches bauelement und verfahren zur herstellung eines keramischen bauelementsInfo
- Publication number
- EP2612333A2 EP2612333A2 EP11757223.0A EP11757223A EP2612333A2 EP 2612333 A2 EP2612333 A2 EP 2612333A2 EP 11757223 A EP11757223 A EP 11757223A EP 2612333 A2 EP2612333 A2 EP 2612333A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- ceramic
- electrode
- ceramic component
- electrodes
- projection
- 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.)
- Granted
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 56
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims description 2
- 238000004080 punching Methods 0.000 claims 1
- 239000000463 material Substances 0.000 description 12
- 238000002360 preparation method Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/18—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material comprising a plurality of layers stacked between terminals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/1006—Thick film varistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/105—Varistor cores
Definitions
- the invention relates to a ceramic component, as in ⁇ example, a varistor, and a method for producing such a device.
- Varistors may be used to protect RF circuits from damage by electrostatic discharge.
- the resistance is voltage-dependent and is abruptly above a certain threshold voltage smaller. As a result, charge can be discharged at a high applied voltage across the varistor.
- a ceramic component comprises a main body with two connection contacts attached thereto.
- the ceramic component further comprises a first and a second elongate via electrode, which are each coupled to one of the terminal contacts.
- the first and second via electrodes each have an extended area when projected in the longitudinal direction.
- the capacity of the ceramic component is very small distrtel ⁇ len.
- the ceramic component a Kapa ⁇ capacity to ⁇ 3 pF.
- the projection of the first via electrode and the projection of the second via electrode each overlap in the longitudinal direction on a common projection plane.
- the part of the projection in which the projections overlap is larger than a part where the projections do not overlap.
- the area of the projection is the first one Via electrode on the common pro ekomsebene smaller than the area of the projection of the second via electrode.
- the projection of the first via electrode is arranged on the projection ⁇ plane within the projection of the second Via-electrode at ⁇ .
- a method for producing a ceramic component comprises layers of a plurality of ceramic layers to form a layer stack which forms a base body of the ceramic component.
- Two via electrodes are introduced transversely to the layer sequence from two opposite sides of the layer stack into the layer stack.
- Two connection contacts are attached to the layer stack, so that the connection contacts are each electrically coupled to one of the via electrodes.
- recesses are punched into the layer stack for insertion of the via electrodes and filled with an electrically conductive material.
- a ceramic component can be produced, which has a low capacitance and can be compensated in the manufacture- related tolerances.
- FIG. 1A and 1B is a schematic representation of a kera ⁇ mixing device according to an embodiment
- Figure 2 is a schematic representation of a ceramic
- Figure 3 is a schematic representation of a ceramic
- Figures 4A and 4B is a schematic representation of a Kera ⁇ mixing device according to one embodiment
- Figures 5A and 5B is a schematic representation of a Kera ⁇ mixing device according to one embodiment
- Figure 6 is a schematic representation of a ceramic
- FIG. 7 shows a schematic perspective view of a ceramic component in perspective view according to an embodiment
- Figure 8 is a schematic representation of a ceramic
- Figure 9 is a schematic representation of a ceramic
- FIG. 1A shows a ceramic component 100 in a cross- sectional view.
- the ceramic component has a base ⁇ body 101, which is constructed of ceramic layers.
- a connection contact 102, 103 for electronic contacting of the device 100 is attached on two opposite side surfaces 126, 127 in each case a connection contact 102, 103 for electronic contacting of the device 100 is attached.
- a longitudinally extended viaducts electrode 104 into the main body 101 extends starting from the side surface 127 extends a further Via-electrode 105 into the main body 101.
- the via electrodes extend to an active region 125 in which, for example, a varistor ceramic is arranged.
- the via electrodes 104 and 105 each have at the end which faces away relationship ⁇ example 103 the connection contact 102 to which they are electrically coupled, a transversely extended to the longitudinal direction of surface 106 be ⁇ relationship as 107.
- the ceramic layers of the main body 101 are arranged in a layer stack.
- the layers are extended flat in the Y direction of Figure 1 and stacked in the X direction of Figure 1.
- the layers are arranged transversely to the planar extent of the connection contacts 102, 103 on each other.
- the via electrodes 104 and 105 extend transversely to the stacking direction of the layer stack.
- the via electrodes 104 and 105 penetrate a plurality of ceramic layers, in particular more than two ceramic layers.
- FIG. 1B shows a sectional view of the component of FIG. 1A along the plane A - A '.
- the surface 106 and the surface 107 have in projection in the longitudinal direction of the via electrodes on a Pro ekomsebene, for example, the plane A - A ', an overlapping area. Preferably, the projections completely overlap, as shown in FIG. 1B.
- a diameter 115 of the via electrode 104 and the via electrode 105 transverse to the longitudinal propagation is the same size.
- the surface area of the projection on the projection plane of the two via electrodes 104 and 105 is the same size in the illustrated embodiment.
- the area ⁇ content of the projection of the via-electrodes 104 and 105 each approximately between 3500 ⁇ 2 and 6500 ⁇ second If the projection has a circular shape, this corresponds to a diameter of about 65 ⁇ to about 90 ⁇ .
- the projection of the via electrodes is circular in each case when the via electrodes 104 and 105, for example, a
- the top and top surfaces of the cylindrical shape correspond to the surface 106 of the via electrode 104 and the surface of the via electrode facing the terminal contact 102.
- the via electrodes have ⁇ form a circular cylinder shape in execution, but they can also have other shapes such as an elliptical base area or ⁇ a rectangular base.
- Be ⁇ rich 125 is disposed between the surfaces 106 and 107 of the via electrodes 104 and 105. This allows the tolerance ranges, for example, the capacitance of the device, ver ⁇ be downsized and hang example, substantially only still from a variation of the distance between the surface 106 and 107 from.
- the via electrodes are introduced into the layer stack after the ceramic layers have been stacked.
- the via electrodes are punched into the layer stack and then filled with an electroconducting ⁇ ELIGIBLE material, such as a paste.
- Figure 2 shows a further embodiment of the Bauele ⁇ ments 100.
- the via electrodes 104 and 105 to each other have different diameters 115 and 116 on.
- In projek ⁇ tion in the longitudinal direction of the surface area of the Via-electrode 105 is larger than the area of the via electrode 104.
- Insbesonde ⁇ re is the projection with the smaller surface area fully ⁇ constantly within the projection having the larger surface area. At least the overlapping portion of the two projections is larger than the portion that does not overlap.
- FIG. 3 shows a further embodiment of the component 100.
- the component 100 has a further via electrode 108, which is arranged between the via electrode 104 and the via electrode 105.
- the additional via electrode 108 is preferably arranged co ⁇ axially to the via electrodes 104 and 105. In Pro ⁇ jection in the longitudinal direction of propagation of the via electrodes, the projections of the three via-electrodes 104, 105 and 108 overlap, preferably completely.
- a varistor ceramic is arranged between the surface 106 of the via electrode 104 and an opposite surface 109 of the via electrode 108.
- surface 110 of the Via-electrode 108 is a white ⁇ tere layer comprising a varistor disposed.
- FIGS. 4A and 4B show a further embodiment of the component 100, in which, in contrast to the previous exemplary embodiments, two via electrodes each are coupled to one of the connection contacts.
- the via electrode 104 and another via electrode 111 is electrically coupled.
- the via electrode 105 and another via electrode 112 is electrically coupled.
- the via electrodes 104 and 111 or 105 and 112 are rectilinear, preferably parallel, starting at the respective terminal contacts in the longitudinal direction into the interior of the main body 101 to the active area.
- FIG. 4B shows a sectional view along the plane A - A 'of FIG. 4A. Dashed lines show the projection of the via electrodes 105 and 112 on the plane A - A '.
- the projection of the via electrodes 104 and 112 surround the cross-section of the via electrode 104 and the electrode 111.
- the viaducts projections of the via electrodes 104 and 105 or 111 and 112 overlap each full ⁇ constantly.
- the projections of the via electrodes 104 and 111, respectively, which have the smaller surface area, are each completely arranged within the projections of the via electrodes 104 and 111, respectively.
- FIGS. 5A and 5B show a further embodiment of the component 100, in which the base body comprises materials with mutually different dielectric constants.
- a region 117 of the base body 101 which faces the connection contact 102 and with this a common Kon ⁇ clock face (side face 126), has a lower dielectric constant than an area 118 of the main body 101, which the in the direction away from the terminal contact 102 to Section 117 connects.
- a common contact surface (side surface 127) on ⁇ in turn, has a lower dielectric constant than the portion 118, preferably the same dielectric constant as the area 117th
- a material 120 of the regions 117 and 119 has the lower dielectric constant than a material 121 of the region 118.
- the regions 117, 118 and 119 can each be formed from a plurality of ceramic layers. The ceramic
- Layers of the regions 117, 118 and 119 are stacked across the longitudinal direction of the via electrodes.
- Device 100 has a low capacity, in particular a capacity of ⁇ 5 pF, preferably a capacity ⁇ 3 pF. Since the viaducts electrodes 104 and 105 are surrounded in the areas 117 and 119 of the material 120, which has a low dielectric ⁇ figure, stray electrical effects from the preparation ⁇ surfaces 117 and 119 can be reduced. In order to reduce a chemical Reakti ⁇ on between layers of high and low dielectric constant, preferably to prevent, the area 118 is made thicker. In particular, a part of the via electrodes is arranged in the region 118.
- FIG. 5B shows a sectional view along the plane A - A 'of FIG. 5A.
- the via electrode 105 is surrounded by the material 120 having the comparatively low dielectric constant.
- Figure 6 shows a further embodiment of the Bauele ⁇ ments 100 in which the via electrodes 104 and 105 respectively along their longitudinal propagation direction transverse to Lssensaubrei- power direction have different dimensions.
- the via electrodes 104 and 105 respectively along their longitudinal propagation direction transverse to Lssensaubrei- power direction have different dimensions.
- the areas 117 and 119 that are adjacent to the terminals 102 be ⁇ relationship as 103, has a range of 123 Via- Electrode 105, which is surrounded by the material 120, a greater extent transverse to the longitudinal propagation, as in the subsequent region 124 of the via electrode 105.
- the region 124 has the diameter 115 and the region 123 has a diameter 122, the larger is as the
- Diameter 115 Diameter 115.
- the via electrodes 104 and 105 are well e lectric coupled to the respective connecting contacts 102 and 103rd
- the preparation ⁇ surface 123 are arranged in the material 120.
- the via electrodes are formed with a smaller cross section than in the regions 123.
- FIG. 7 shows the component 100 in a perspective view.
- the component has, for example, zirconium oxide, ZnO-BI and / or ZnO-PR as varistor ceramics.
- the component may comprise capacitor materials, in particular C0G, X7R, Z5U, Y5V and / or HQM.
- FIG. 8 shows a further embodiment of the component 100 in a perspective view, in which four connection contacts are arranged on the main body 101.
- a via-electrode extends in the direction of gege ⁇ nüberche contact pad by a portion of the base ⁇ body.
- the device 100 according to the embodiment of the invention For example, gur 8 has a device area of ⁇ 5.12 mm 2 , preferably a device area of 2.5 mm 2 .
- Figure 9 shows the device 100 according to another embodiment with eight connection contacts 102 and 103.
- the side face 126 and 127 are four contacts arranged on ⁇ circuit 102 and 103rd
- a via-electrode extends into the interior of the base body 101.
- the device 100 according to the Off 9 has, for example, a device area of ⁇ 8 mm 2 , in particular a device area of 5.12 mm 2 .
- varistor arrays formed which comprise a plurality of individual Varisto ⁇ ren.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010036270.0A DE102010036270B4 (de) | 2010-09-03 | 2010-09-03 | Keramisches Bauelement und Verfahren zur Herstellung eines keramischen Bauelements |
PCT/EP2011/065049 WO2012028659A2 (de) | 2010-09-03 | 2011-08-31 | Keramisches bauelement und verfahren zur herstellung eines keramischen bauelements |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2612333A2 true EP2612333A2 (de) | 2013-07-10 |
EP2612333B1 EP2612333B1 (de) | 2016-07-13 |
Family
ID=44651704
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11757223.0A Active EP2612333B1 (de) | 2010-09-03 | 2011-08-31 | Keramisches bauelement und verfahren zur herstellung eines keramischen bauelements |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2612333B1 (de) |
JP (1) | JP5716092B2 (de) |
CN (1) | CN103210456B (de) |
DE (1) | DE102010036270B4 (de) |
WO (1) | WO2012028659A2 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105493211B (zh) * | 2013-09-02 | 2019-01-18 | 株式会社村田制作所 | 可变电容元件及其制造方法 |
WO2016136772A1 (ja) * | 2015-02-27 | 2016-09-01 | 株式会社村田製作所 | 可変容量素子 |
WO2016136771A1 (ja) * | 2015-02-27 | 2016-09-01 | 株式会社村田製作所 | 可変容量素子 |
KR101808794B1 (ko) * | 2015-05-07 | 2018-01-18 | 주식회사 모다이노칩 | 적층체 소자 |
DE102016108604A1 (de) * | 2016-05-10 | 2017-11-16 | Epcos Ag | Vielschichtbauelement und Verfahren zur Herstellung eines Vielschichtbauelements |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6049621U (ja) * | 1983-09-14 | 1985-04-08 | 松下電器産業株式会社 | 積層セラミックコンデンサ |
DE3930000A1 (de) * | 1988-09-08 | 1990-03-15 | Murata Manufacturing Co | Varistor in schichtbauweise |
JPH0644101U (ja) * | 1992-11-09 | 1994-06-10 | 株式会社村田製作所 | チップ型正特性サーミスタ素子 |
JPH06314602A (ja) * | 1993-04-28 | 1994-11-08 | Tdk Corp | セラミック電子部品 |
JPH1050548A (ja) * | 1996-08-01 | 1998-02-20 | Nippon Chemicon Corp | 積層セラミックコンデンサ |
JPH11297508A (ja) * | 1998-04-09 | 1999-10-29 | Matsushita Electric Ind Co Ltd | 積層型セラミック電子部品 |
DE19931056B4 (de) | 1999-07-06 | 2005-05-19 | Epcos Ag | Vielschichtvaristor niedriger Kapazität |
JP2001043954A (ja) * | 1999-07-30 | 2001-02-16 | Tokin Corp | サージ吸収素子及びその製造方法 |
JP2001185440A (ja) * | 1999-12-24 | 2001-07-06 | Kyocera Corp | 積層セラミックコンデンサ |
JP2002246752A (ja) * | 2001-02-19 | 2002-08-30 | Murata Mfg Co Ltd | セラミック多層基板のビアホール構造 |
JP2006222442A (ja) * | 2002-10-30 | 2006-08-24 | Kyocera Corp | コンデンサ、及び配線基板 |
DE10313891A1 (de) * | 2003-03-27 | 2004-10-14 | Epcos Ag | Elektrisches Vielschichtbauelement |
DE102004031878B3 (de) * | 2004-07-01 | 2005-10-06 | Epcos Ag | Elektrisches Mehrschichtbauelement mit zuverlässigem Lötkontakt |
JP2006245367A (ja) * | 2005-03-04 | 2006-09-14 | Matsushita Electric Ind Co Ltd | バリスタおよびその製造方法 |
DE102005028498B4 (de) * | 2005-06-20 | 2015-01-22 | Epcos Ag | Elektrisches Vielschichtbauelement |
DE102005050638B4 (de) * | 2005-10-20 | 2020-07-16 | Tdk Electronics Ag | Elektrisches Bauelement |
JP4961885B2 (ja) * | 2006-08-03 | 2012-06-27 | Tdk株式会社 | 積層電子部品 |
JP2009152348A (ja) * | 2007-12-20 | 2009-07-09 | Panasonic Corp | 静電気対策部品 |
JP2010123613A (ja) * | 2008-11-17 | 2010-06-03 | Murata Mfg Co Ltd | セラミック電子部品及びセラミック電子部品の実装構造 |
DE102009007316A1 (de) * | 2009-02-03 | 2010-08-05 | Epcos Ag | Elektrisches Vielschichtbauelement |
-
2010
- 2010-09-03 DE DE102010036270.0A patent/DE102010036270B4/de active Active
-
2011
- 2011-08-31 JP JP2013526461A patent/JP5716092B2/ja active Active
- 2011-08-31 WO PCT/EP2011/065049 patent/WO2012028659A2/de active Application Filing
- 2011-08-31 EP EP11757223.0A patent/EP2612333B1/de active Active
- 2011-08-31 CN CN201180042441.2A patent/CN103210456B/zh active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2012028659A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO2012028659A2 (de) | 2012-03-08 |
JP2013536989A (ja) | 2013-09-26 |
EP2612333B1 (de) | 2016-07-13 |
DE102010036270A1 (de) | 2012-03-08 |
CN103210456A (zh) | 2013-07-17 |
WO2012028659A3 (de) | 2012-07-26 |
CN103210456B (zh) | 2016-08-10 |
DE102010036270B4 (de) | 2018-10-11 |
JP5716092B2 (ja) | 2015-05-13 |
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