WO1997040529A1 - Verfahren zur herstellung eines keramischen multilayer-substrats - Google Patents
Verfahren zur herstellung eines keramischen multilayer-substrats Download PDFInfo
- Publication number
- WO1997040529A1 WO1997040529A1 PCT/DE1996/002348 DE9602348W WO9740529A1 WO 1997040529 A1 WO1997040529 A1 WO 1997040529A1 DE 9602348 W DE9602348 W DE 9602348W WO 9740529 A1 WO9740529 A1 WO 9740529A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- foils
- ceramic
- green ceramic
- conductive paste
- conductor tracks
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/09—Use of materials for the conductive, e.g. metallic pattern
- H05K1/092—Dispersed materials, e.g. conductive pastes or inks
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
- H10W70/60—Insulating or insulated package substrates; Interposers; Redistribution layers
- H10W70/62—Insulating or insulated package substrates; Interposers; Redistribution layers characterised by their interconnections
- H10W70/66—Conductive materials thereof
- H10W70/666—Organic materials or pastes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
- H10W70/60—Insulating or insulated package substrates; Interposers; Redistribution layers
- H10W70/67—Insulating or insulated package substrates; Interposers; Redistribution layers characterised by their insulating layers or insulating parts
- H10W70/69—Insulating materials thereof
- H10W70/692—Ceramics or glasses
Definitions
- the invention is based on a method for producing a ceramic multilayer substrate according to the type specified in the preamble of claim 1.
- a method for producing ceramic multilayer substrates is known for example from DE 43 09 005.
- green ceramic foils that is to say flexible, unfired ceramic foils in the raw state, are provided with conductor tracks and through-contacts, so-called vias.
- vias are first punched for the plated-through holes in the green ceramic films.
- printed conductors are printed on the ceramic foils using a screen printing process using a conductive paste.
- the previously punched holes for the vias are either filled with conductive paste when printing the conductor tracks or filled with conductive paste in a printing process carried out separately before printing the conductor tracks.
- LTCC substrates Low temperature cofired ceramics
- Differentiate multilayer substrates in that ceramic foils are used which can be fired at temperatures below 900 ° C. At these low sintering temperatures, very inexpensive conductive pastes can be used for the production of the conductor tracks. After the ceramic foils have been printed, they are dried and arranged one above the other in a stack. The stack thus formed is then laminated and finally fired.
- the conductive pastes used in the prior art for the production of ceramic multilayer substrates contain an organic, volatile solvent which partially diffuses into the green ceramic films.
- solvents are, for example, alcohols or terpoleols.
- the ceramic foils After printing the conductor tracks or the plated-through holes and before stacking and firing the green ceramic foils, the ceramic foils must each be dried in a dryer, since the conductive paste applied to the ceramic foils cannot be baked into the foils without drying, otherwise one would Spontaneous evaporation of the solvent contained in the conductive paste at the high firing temperatures of the ceramic foils lead to the formation of cracks and bubbles in the ceramic multilayer substrates. It must be regarded as extremely disadvantageous that the drying process of the green ceramic films represents an extremely complex interruption of the manufacturing process.
- the individual ceramic films are dried at slightly elevated temperatures until the predominant portion of the solvent has evaporated.
- the solvent when the solvent is evaporated from the conductive paste and when the solvent diffused into the ceramic films is evaporated, there is a disadvantageous shrinkage of conductor tracks and ceramic films. Since the ceramic foils do not all shrink by exactly the same amount, the conductor track structure on the green ceramic foils can be distorted. After drying afterwards guided stacks of the ceramic foils can dislocations and displacements between the conductor tracks and plated-through holes of two ceramic foils one above the other partially or completely prevent the occurrence of an electrical contact at the desired positions. The multilayer substrate formed after the firing is thereby unusable.
- the method according to the invention with the characterizing features of the main claim has the great advantage that the green ceramic films do not have to be dried before stacking.
- the use of a guide paste, which contains a wax as a print carrier and does not contain any volatile solvents means that the time-consuming drying of the green ceramic films is eliminated.
- the foils can be stacked and burned immediately after the conductor tracks and plated-through holes have been printed. Since the drying times are eliminated, the ceramic multilayer substrates can be manufactured much faster.
- shrinkage of the conductor tracks and the green ceramic foils is avoided before firing. A distortion of the fine conductor track structures on the green ceramic foils is therefore excluded.
- Unfired green ceramic foils are used to produce a ceramic multilayer substrate.
- the green ceramic films consist of ceramic particles, an inorganic binder and an organic binder. Suitable materials for these components are listed, for example, in US 50 85 720.
- the green ceramic foils have a flexible structure and can be easily processed. For example, punching holes for vias in this phase of substrate production is easily possible.
- the conductor tracks are then printed onto the ceramic films in a further printing process. When printing, a conductive paste is used which does not contain any volatile solvents as print media.
- the conductivity of the paste is caused by a large number of small metal particles, eg silver particles with a grain size of 0.5 ⁇ m - 10 ⁇ m.
- the conductive paste contains a wax consisting of organic compounds as a print carrier, which is solid to kneadable at a temperature below a temperature range of about 40 ° C to 70 ° C and above this temperature range changes into the thin liquid state without decomposition.
- Conductive pastes with a wax that changes to the liquid state at approx. 60 ° C to 70 ° C are particularly suitable.
- the conductive paste is heated to a temperature of more than 70 ° C., so that the paste becomes printable and has the rheological properties required for the printing process.
- Such pastes are currently commercially available for other uses, for example under the name ENVIROTHERM pastes. Since the printed paste contains no volatile solvent, no solvent diffuses into the green ceramic films during the printing process. There is therefore no drying of the ceramic foils associated with shrinkage. s, in which the volatile solvents are evaporated from the conductive paste and the ceramic foils.
- the wax solidifies in the conductive paste after a short period of cooling, as a result of which the conductor tracks are fixed in their position and dimensions on the green ceramic foils.
- the green ceramic foils can now be stacked on top of one another in an adjusted manner without drying times. Since the conductor pattern applied to the green ceramic foils with high precision solidifies immediately after the conductive paste has cooled, no additional stabilization measures need to be taken to avoid distortion or deformation of the conductor pattern.
- the stack thus formed is now laminated and finally burned in an oven. When firing, the organic binding agents of the green ceramic films are burned without leaving any residue.
- the actual ceramic substrate is finally formed during sintering, the inorganic binder acting as a matrix by which the ceramic particles are connected to one another.
- the organic wax contained in the conductive paste of the applied conductor tracks and vias is pyrolyzed and escapes from the stack through the porous ceramic.
- the metal particles contained in the paste are connected to one another in an electrically conductive manner, so that the conductor pattern provided in several layers of the multilayer substrate is formed from electrically connected conductor tracks and through contacts.
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Production Of Multi-Layered Print Wiring Board (AREA)
Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BR9610093A BR9610093A (pt) | 1996-04-20 | 1996-12-07 | Processo para produção de uma base cerâmica de camadas múltiplas |
| EP96946052A EP0835522A1 (de) | 1996-04-20 | 1996-12-07 | Verfahren zur herstellung eines keramischen multilayer-substrats |
| JP9537548A JPH11510963A (ja) | 1996-04-20 | 1996-12-07 | セラミック多層基板の製造方法 |
| AU18689/97A AU715150B2 (en) | 1996-04-20 | 1996-12-07 | Process for producing a ceramic multilayer substrate |
| US08/981,163 US5919325A (en) | 1996-04-20 | 1996-12-07 | Process for producing a ceramic multilayer substrate |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19615787A DE19615787A1 (de) | 1996-04-20 | 1996-04-20 | Verfahren zur Herstellung eines keramischen Multilayer-Substrats |
| DE19615787.0 | 1996-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1997040529A1 true WO1997040529A1 (de) | 1997-10-30 |
Family
ID=7791942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE1996/002348 Ceased WO1997040529A1 (de) | 1996-04-20 | 1996-12-07 | Verfahren zur herstellung eines keramischen multilayer-substrats |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US5919325A (de) |
| EP (1) | EP0835522A1 (de) |
| JP (1) | JPH11510963A (de) |
| KR (1) | KR19990022267A (de) |
| AU (1) | AU715150B2 (de) |
| BR (1) | BR9610093A (de) |
| DE (1) | DE19615787A1 (de) |
| RU (1) | RU2185683C2 (de) |
| WO (1) | WO1997040529A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7795632B2 (en) | 2006-06-26 | 2010-09-14 | Osram Sylvania Inc. | Light emitting diode with direct view optic |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6551720B2 (en) | 2000-05-02 | 2003-04-22 | Sarnoff Corporation | Materials to fabricate a high resolution plasma display back panel |
| US6738600B1 (en) | 2000-08-04 | 2004-05-18 | Harris Corporation | Ceramic microelectromechanical structure |
| US6437981B1 (en) | 2000-11-30 | 2002-08-20 | Harris Corporation | Thermally enhanced microcircuit package and method of forming same |
| DE10234773A1 (de) * | 2002-07-30 | 2004-02-12 | Daimlerchrysler Ag | Einspritzsystem und Drucksensor für ein solches |
| DE10305950B4 (de) * | 2003-02-12 | 2006-03-02 | Daimlerchrysler Ag | Einspritzsystem und thermischer Massenflusssensor für ein solches |
| US7240424B2 (en) * | 2004-04-29 | 2007-07-10 | Northrop Grumman Corporation | Method of laminating low temperature co-fired ceramic (LTCC) Material |
| DE102007015399A1 (de) | 2007-03-30 | 2008-10-02 | Robert Bosch Gmbh | Verfahren zur Herstellung einer keramischen Mehrlagen-Schaltungsanordnung und entsprechende Mehrlagen-Schaltungsanordnung |
| JP5686606B2 (ja) * | 2010-01-12 | 2015-03-18 | 日本軽金属株式会社 | フィン一体型基板の製造方法およびフィン一体型基板 |
| CN104885576B (zh) * | 2012-12-31 | 2017-12-05 | 阿莫绿色技术有限公司 | 柔性印刷电路基板及其制造方法 |
| US9640419B2 (en) * | 2014-08-04 | 2017-05-02 | Infineon Technologies Ag | Carrier system for processing semiconductor substrates, and methods thereof |
| US9368436B2 (en) * | 2014-08-04 | 2016-06-14 | Infineon Technologies Ag | Source down semiconductor devices and methods of formation thereof |
| CN106145914B (zh) * | 2016-06-24 | 2018-11-09 | 中国电子科技集团公司第三十八研究所 | 一种超薄型低温共烧陶瓷基板的快速成型与烧结方法 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0050903A1 (de) * | 1980-10-28 | 1982-05-05 | E.I. Du Pont De Nemours And Company | Verfahren zur Herstellung mehrschichtiger keramischer Chipträger-Moduln |
| EP0133917A2 (de) * | 1983-08-08 | 1985-03-13 | International Business Machines Corporation | Verfahren zur Bildung eines Musters von elektrisch leitenden Linien auf der Oberseite eines keramischen Substrates |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU1688754C (ru) * | 1980-06-14 | 1994-12-30 | Научно-исследовательский институт физики при Ростовском государственном университете | Способ изготовления многослойных пьезокерамических элементов |
| JPS59193972A (ja) * | 1983-04-15 | 1984-11-02 | Nippon Engeruharudo Kk | 熱可塑性導電ペ−スト組成物 |
| JPH0224907A (ja) * | 1988-07-11 | 1990-01-26 | Fujitsu Ltd | ペースト組成物およびこれを用いたパターン形成方法 |
| US5085720A (en) * | 1990-01-18 | 1992-02-04 | E. I. Du Pont De Nemours And Company | Method for reducing shrinkage during firing of green ceramic bodies |
| DE4309005A1 (de) * | 1992-07-23 | 1994-01-27 | Bosch Gmbh Robert | Verfahren zur Herstellung von Mehrlagen-Hybriden |
-
1996
- 1996-04-20 DE DE19615787A patent/DE19615787A1/de not_active Withdrawn
- 1996-12-07 KR KR1019970708746A patent/KR19990022267A/ko not_active Ceased
- 1996-12-07 RU RU98101120/28A patent/RU2185683C2/ru active
- 1996-12-07 JP JP9537548A patent/JPH11510963A/ja active Pending
- 1996-12-07 EP EP96946052A patent/EP0835522A1/de not_active Withdrawn
- 1996-12-07 AU AU18689/97A patent/AU715150B2/en not_active Ceased
- 1996-12-07 BR BR9610093A patent/BR9610093A/pt unknown
- 1996-12-07 US US08/981,163 patent/US5919325A/en not_active Expired - Fee Related
- 1996-12-07 WO PCT/DE1996/002348 patent/WO1997040529A1/de not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0050903A1 (de) * | 1980-10-28 | 1982-05-05 | E.I. Du Pont De Nemours And Company | Verfahren zur Herstellung mehrschichtiger keramischer Chipträger-Moduln |
| EP0133917A2 (de) * | 1983-08-08 | 1985-03-13 | International Business Machines Corporation | Verfahren zur Bildung eines Musters von elektrisch leitenden Linien auf der Oberseite eines keramischen Substrates |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7795632B2 (en) | 2006-06-26 | 2010-09-14 | Osram Sylvania Inc. | Light emitting diode with direct view optic |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2185683C2 (ru) | 2002-07-20 |
| JPH11510963A (ja) | 1999-09-21 |
| KR19990022267A (ko) | 1999-03-25 |
| BR9610093A (pt) | 1999-01-05 |
| US5919325A (en) | 1999-07-06 |
| AU715150B2 (en) | 2000-01-20 |
| EP0835522A1 (de) | 1998-04-15 |
| DE19615787A1 (de) | 1997-10-23 |
| AU1868997A (en) | 1997-11-12 |
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