DE2829917A1 - Solderable semiconductor unit prodn. - by coating with viscous mixt. of metal powder(s) in metal carbonyl, carbohydrate of liq. metal vehicle and heating - Google Patents
Solderable semiconductor unit prodn. - by coating with viscous mixt. of metal powder(s) in metal carbonyl, carbohydrate of liq. metal vehicle and heatingInfo
- Publication number
- DE2829917A1 DE2829917A1 DE19782829917 DE2829917A DE2829917A1 DE 2829917 A1 DE2829917 A1 DE 2829917A1 DE 19782829917 DE19782829917 DE 19782829917 DE 2829917 A DE2829917 A DE 2829917A DE 2829917 A1 DE2829917 A1 DE 2829917A1
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- contact
- metal
- metals
- semiconductor
- coatings
- 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.)
- Withdrawn
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 46
- 239000002184 metal Substances 0.000 title claims abstract description 46
- 239000004065 semiconductor Substances 0.000 title claims abstract description 38
- 238000000576 coating method Methods 0.000 title claims abstract description 24
- 238000010438 heat treatment Methods 0.000 title claims abstract description 8
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 title claims description 9
- 239000011248 coating agent Substances 0.000 title claims description 8
- 239000000843 powder Substances 0.000 title claims description 7
- 150000001720 carbohydrates Chemical class 0.000 title claims description 5
- 150000002739 metals Chemical class 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000005275 alloying Methods 0.000 claims abstract description 6
- 238000005245 sintering Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 45
- 239000000126 substance Substances 0.000 claims description 16
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 12
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 7
- 229910052737 gold Inorganic materials 0.000 claims description 7
- 239000010931 gold Substances 0.000 claims description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 6
- 229910052709 silver Inorganic materials 0.000 claims description 6
- 239000004332 silver Substances 0.000 claims description 6
- 239000007791 liquid phase Substances 0.000 claims description 5
- 238000007650 screen-printing Methods 0.000 claims description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 5
- 229910052721 tungsten Inorganic materials 0.000 claims description 5
- 239000010937 tungsten Substances 0.000 claims description 5
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 4
- 235000014633 carbohydrates Nutrition 0.000 claims description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 239000011733 molybdenum Substances 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 230000001680 brushing effect Effects 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims 2
- 239000007788 liquid Substances 0.000 claims 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims 1
- 229910052804 chromium Inorganic materials 0.000 claims 1
- 239000011651 chromium Substances 0.000 claims 1
- 229910052802 copper Inorganic materials 0.000 claims 1
- 239000010949 copper Substances 0.000 claims 1
- 229910052763 palladium Inorganic materials 0.000 claims 1
- 239000012071 phase Substances 0.000 claims 1
- 239000010936 titanium Substances 0.000 claims 1
- 229910052719 titanium Inorganic materials 0.000 claims 1
- 230000000873 masking effect Effects 0.000 abstract description 3
- 239000003595 mist Substances 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 239000001913 cellulose Substances 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000007740 vapor deposition Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- 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 1
- 230000004913 activation Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- -1 cellulose compounds Chemical class 0.000 description 1
- 238000005234 chemical deposition Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
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Abstract
Description
VERFAHREN ZUM HERSTELLEN VON HALBLEITERBAUELEMENTEN METHOD FOR MANUFACTURING SEMICONDUCTOR COMPONENTS
Die Erfindung betrifft ein Verfahren zum Herstellen von Halbleiterbauelementen mit den Merkmalen nach dem Oberbegriff des Anspruchs 1.The invention relates to a method for producing semiconductor components with the features according to the preamble of claim 1.
Im Rahmen der Fertigung von Halbleiterbauelementen werden im Anschluß an die Erzeugung von Schichten unterschiedlichen Leitungstyps in Halbleiterkörpern auf deren Kontaktflächen metallische Uberzüge als Kontaktschichten zu ihrer Verbindung mit Stromleiterteilen aufgebracht.In connection with the manufacture of semiconductor components to the production of layers of different conductivity types in semiconductor bodies on their contact surfaces metallic coatings as contact layers for their connection applied with current conductor parts.
Es ist bekannt, derartige Überzüge durch Aufdampfen der dafür vorgesehenen Kontaktmetalle auf die entsprechenden Kontaktflächenbereiche und durch Legieren mit der Unterlage aus Halbleitermaterial herzustellen. Diese Methode erfordert erheblichen Materialeinsatz sowie hohen Arbeits- und Vorrichtungsaufwand beim Aufdampfen und erlaubt häufig nicht die gewünschte rationelle Groß-Serienherstellung von Halbleiterbauelementen.It is known that such coatings by vapor deposition of the intended Contact metals on the corresponding contact surface areas and by alloying with the base made of semiconductor material. This method requires considerable Use of materials as well as high work and equipment costs for vapor deposition and often does not allow the desired, efficient, large-scale production of semiconductor components.
Die weiterhin bekannte und im Vergleich zur Aufdampfmethode rationellere chemische Abscheidung der Kontaktmetalle ist im wesentlichen auf das Aufbringen von Nickel, Silber oder Gold beschränkt. Sie macht eine aufwendige Vorbehandlung des Halbleiterausgangsmaterials und, zur Erzielung gewünschter Kontaktflächenstrukturen, zusätzliche Maskierungsprozesse notwendig.The one that is still known and more efficient compared to the vapor deposition method chemical deposition of the contact metals is essentially due to the deposition of nickel, silver or gold limited. She makes an elaborate one Pretreatment of the semiconductor starting material and, to achieve the desired contact surface structures, additional masking processes necessary.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zum Herstellen von Halbleiterbauelementen zu schaffen, bei dem mit einem Minimum an Kontaktmaterial, an Verfahrensschritten und Vorrichtungen als Kontaktschichten dienende, metallische Überzuge auf vorbereiteten Halbleiterkörpern in beliebiger Flächenform und -ausdehnung erzeugt werden können.The invention is based on the object of a method for manufacturing of semiconductor components in which with a minimum of contact material, on process steps and devices serving as contact layers, metallic Coatings on prepared semiconductor bodies in any surface shape and size can be generated.
Die Lösung dieser Aufgabe besteht bei Verfahren nach dem Oberbegriff des Anspruchs 1 in dessen kennzeichnenden Merkmalen.The solution to this problem consists in the method according to the preamble of claim 1 in its characterizing features.
Weiterbildungen der Erfindung sind in den weiteren Ansprüchen gekennzeichnet.Developments of the invention are characterized in the further claims.
Die nach der Erfindung vorgesehenen Kontaktmetalle sind im Handel in Pulverform mit gewünschter Korngröße und in ausreichender Reinheit erhältlich. An ihre physikalischen Eigenschaften sind keine besonderen Anforderungen zu stellen. Entsprechend der jeweils vorgesehenen Verwendung der Kontaktmetalle kann eine Vorbehandlung derselben zu ihrer Aktivierung, d.h. zur Begünstigung ihrer Reaktion bei der Bildung der gewünschten Überzüge, z.B. mit Hilfe einer Ätzbehandlung, erforderlich sein.The contact metals provided according to the invention are commercially available available in powder form with the desired grain size and in sufficient purity. There are no special requirements for their physical properties. Depending on the intended use of the contact metals, a pretreatment can be carried out the same to their activation, i.e. to favor their reaction in formation the desired coatings, e.g. with the help of an etching treatment, may be required.
Die Wahl der Kontaktmetalle, und bei Mischung von mehreren auch ihr jeweiliger Anteil, ist abhängig von den gewünschten physikalischen Eigenschaften der Überzüge sowie, entsprechend dem vorgesehenen Verfahrensablauf, teilweise auch von ihrer gegenseitigen Reaktion und von ihrer Reaktion mit dem jeweiligen Halbleitermaterial. Es ist nicht erforderlich, daß bei Ueberzugen aus mehreren Metallen im Verlauf der Wärmebehandlung sämtliche Komponenten in flüssiger Phase vorliegen. So können hochschmelzende Metalle auch nach Durchführung der Wärmebehandlung kornförmig und fein verteilt in dem vorgesehenen metallischen Uberzug vorhanden sein. Das Verfahren nach der Erfindung ermöglicht überraschend einfach, daß die bei den vorgesehenen Verfahrenstemperaturen nicht schmelzenden Metalle mit den niederschmeizenden Metallen einen festen und mechanisch stabilen überzug auf der Halbleiteroberfläche bilden, wobei gerade die hochschmelzenden Materialien in Abhängigkeit von ihren Anteilen wesentlich zur Erzielung spezieller Eigenschaften der gewünschten Uberzüge beitragen können.The choice of contact metals, and if several are mixed, also you the respective proportion depends on the desired physical properties the coatings and, in accordance with the intended process sequence, in some cases as well from her mutual reaction and of their reaction with the respective semiconductor material. It is not necessary that with overcoats several metals in the course of the heat treatment, all components in liquid Phase. In this way, refractory metals can also be used after the heat treatment has been carried out granular and finely distributed in the provided metallic coating be. The method according to the invention makes it surprisingly easy that the At the intended process temperatures, non-melting metals with the low-melting ones Metals a solid and mechanically stable coating on the semiconductor surface form, with just the refractory materials depending on their Proportions essential to achieve special properties of the desired coatings can contribute.
Beispielsweise bildet sich bei Verwendung der Komponenten Molybdän, Aluminium und Silber im Verlauf der Wärmebebandlung ein ternäres System mit durch die Komponenten und deren Anteile bestimmten, mechanischen und elektrischen Eigenschaften.For example, when using the components molybdenum, Aluminum and silver through a ternary system in the course of the heat treatment the components and their proportions determine mechanical and electrical properties.
Zur Herstellung einer Mischung aus wenigstens einem Kontaktmetall und-aus einer Trägersubstanz können für die letztere Stoffe aus der Gruppe der Carbonyle verwendet werden, bei welchen Metalle mit Kohlenstoff und Sauerstoff koordinativ gebunden sind. Besonders vorteilhaft sind solche Verbindungen dieser Grupper deren Metallkomponente gleichzeitig als Komponente der vorgesehenen Kontaktmetallverbindung für die metallischen Überzüge nach der Erfindung geeignet ist. Die Carbonyle zersetzen sich bei Erwärmung in reduzierender Atmosphäre, und die dabei freiwerdenden Metalle reagieren aktiv mit der oder den in Pulverform vorliegenden Metallkomponenten.To produce a mixture of at least one contact metal and - from a carrier substance, substances from the group of carbonyls can be used for the latter are used in which metals are coordinated with carbon and oxygen are bound. Such compounds from this group are particularly advantageous Metal component at the same time as a component of the intended contact metal connection is suitable for the metallic coatings according to the invention. The carbonyls decompose when heated in a reducing atmosphere, and the metals released in the process react actively with the or the metal components present in powder form.
Weiter können organische Stoffe aus der Gruppe der Kohlenhydrate, z.B. Celluloseverbindungen, zur Herstellung der Trägersubstanz verwendet werden. Vorteilhaft eignen sich solche Stoffe, die bei Verfahrenstemperaturen bis 400 C rückstandsfrei verarbeitbar sind.Organic substances from the group of carbohydrates, e.g. cellulose compounds, can be used to produce the carrier substance. Substances which are suitable for use at process temperatures of up to 400.degree can be processed without leaving any residue.
Als Lösungsmittel für Carbonyle können beispielsweise Äther, Benzol, Metanol, Chloroform verwendet werden, und für Celluloseverbindungen ist beispielsweise Äthylacetat geeignet.As solvents for carbonyls, for example, ether, benzene, Metanol, chloroform can be used, and for cellulose compounds is for example Ethyl acetate suitable.
Als Trägersubstanz sind weiter flüssige Phasen von Metallen geeignet, die mit dem Halbleitermaterial bei entsprechenden Verfahrenstemperaturen eine Legierungsverbindung bilden.Liquid phases of metals are also suitable as a carrier substance, which form an alloy compound with the semiconductor material at appropriate process temperatures form.
Besonders vorteilhaft haben sich flüssige Phasen mit Gold, insbesondere eine solche aus 80 Gewichtsprozent Gold und 20 Gewichtsprozent Zinn erwiesen, der noch ein oder mehrere, mit der Trägersubstanz legierende oder in dieser nicht schmelzend verbleibende Kontaktmetalle beigemischt werden können.Liquid phases with gold, in particular, have proven particularly advantageous one of 80 weight percent gold and 20 weight percent tin proved to be one or more, alloying with the carrier substance or not melting in it remaining contact metals can be added.
Die Viskosität der Trägersubstanz wird durch die vorgesehene Methode der Aufbringung auf die Haibleiteroberfläche, z.B.The viscosity of the carrier is determined by the method provided application to the semiconductor surface, e.g.
Aufstreichen, Aufsprühen oder Siebdruck, bestimmt und ist unkritisch.Brushing on, spraying on or screen printing, definitely and not critical.
Im Verlauf der Wärmebehandlung nach dem Aufbringen der z.B.In the course of the heat treatment after the application of the e.g.
ein in Alkohol gelöstes Carbonyl enthaltenden Mischung aus Trägersubstanz und Kontaktmetall(en) auf die Halbleiteroberfläche verdampft zunächst das Lösungsmittel. Bei ansteigen- der Temperatur wird das Metall des Carbonyls reduziert, und schließlich erfolgt entsprechend der vorgegebenen Temperatur der Sinter- bzw. Legierungsprozess der Metallkomponenten zu ihrer festen Verbindung miteinander und mit dem Halbleitermaterial. Dabei kann auch eine der Metallkomponenteh unverändert kornförmig verbleiben. Aufgrund des höheren spezifischen Gewichts der nichtschmelzenden Materialien gegenüber weiteren Komponenten der Mischung erfolgt nach dem Aufbringen derselben auf die Halbleiteroberfläche eine Sedimentation, so daß die unmittelbar an die Unterlage angrenzende Schicht der Mischung sämtliche vorgesehenen Metalle enthält. Ein eventuell auf dem Überzug verbleibender Rest der Trägersubstanz stört bei der anschließenden Weiterverarbeitung des mit metallischen Überzügen versehenen Halbleiterkörpers nicht.a mixture of carrier substance containing carbonyl dissolved in alcohol and contact metal (s) on the semiconductor surface first evaporates the solvent. At rising- the temperature reduces the metal of the carbonyl, and finally the sintering or sintering process takes place according to the given temperature. Alloying process of the metal components to their firm connection with each other and with the semiconductor material. One of the metal components can also remain unchanged remain granular. Due to the higher specific weight of the non-melting ones Materials versus other components of the mixture takes place after application the same on the semiconductor surface sedimentation, so that the immediately the layer of the mixture adjoining the substrate includes all of the metals provided contains. Any residue of the carrier substance that may remain on the coating interferes in the subsequent further processing of the metallic coating Semiconductor body not.
Soll beispielsweise eine Kontaktschicht aus den Metallen Silber, Wolfram und Nickel hergestellt werden, so kann Nikkel in Form von Nickelcarbonyl vorliegen, und die beiden weiteren Metalle werden in Pulverform beigegeben. Zunächst wird Nickelcarbonyl in solcher Menge in einem der genannten Lösungsmittel gelöst, daß der gewünschte Anteil von Nickel in dem vorgesehenen metallischen Überzug gewährleistet ist. Dieser kann zum Beispiel aus 10 Gewichtsprozent Nickel, 20 Gewichtsprozent Silber und 70 Gewichtsprozent Wolfram bestehen. Danach werden die pulverförmigen Komponenten zugesetzt, und über die bedarfsweise Zugabe von Lösungsmittel wird z.B. eine pastenförmige Mischung hergestellt, die nach bekannter Siebdrucktechnik auf die Hälbleiteroberfläche aufgebracht werden kann Der resultierende Überzug weist: aufgrund des hohen Anteils an Wolfram hohe Festigkeitseigenschaften und speziell eine Wärmedehnzahl auf, welche annähernd derjenigen von-Silizium entspricht.Should, for example, a contact layer made of the metals silver and tungsten and nickel are produced, nickel can be in the form of nickel carbonyl, and the other two metals are added in powder form. First is nickel carbonyl dissolved in one of the solvents mentioned in such an amount that the desired Share of nickel in the intended metallic coating is guaranteed. This For example, 10 weight percent nickel, 20 weight percent silver and 70 Percent by weight tungsten. Then the powdery components are added, and through the addition of solvent, for example, a paste-like Mixture produced, which is applied to the semiconductor surface using the known screen printing technique can be applied The resulting coating has: due to the high proportion at Tungsten has high strength properties and especially a coefficient of thermal expansion which approximately corresponds to that of silicon.
Die Trägersubstanz kann gemäß einem weiteren Ausführungsbeispiel auch aus einer Lösung aus Äthylcellulose und 2(2-butoxyaethoxy) äthylacetat mit einem Celluloseanteil von 2 bis 6 Gewichtsprozent gebildet werden, welcher z.B. 50 bis 90 Gewichtsprozent Wolfram oder Molybdän, 30 bis 5 Gewichtsprozent Silber und 20 bis 5 Gewichtsprozent Aluminium jeweils in Pulverform beigegeben, d.h. in ihr aufgeschlämmt sind.According to a further exemplary embodiment, the carrier substance can also from a solution of ethyl cellulose and 2 (2-butoxyaethoxy) ethyl acetate with a Cellulose content of 2 to 6 percent by weight are formed, which is for example 50 to 90 percent by weight tungsten or molybdenum, 30 to 5 percent by weight silver and 20 Up to 5 percent by weight of aluminum is added in powder form, i.e. slurried in it are.
Das beim Siebdruckverfahren verwendete Sieb ist bereits entsprechend der Flächenstruktur ausgebildet, welche auf den in Betracht kommenden Halbleiteroberflächen beschichtet werden soll, so daß keine besonderen Maßnahmen zur Herstellung und Einhaltung einer gewünschten Schichtengeometrie auf den Halbleiteroberflächen erforderlich sind. Nach dem Aufbringen der Mischung oder der Mischungen in einer oder mehreren Schichten auf der jeweiligen Halbleiteroberfläche - das kann gleichzeitig an einer nur durch die Abmessungen der Siebdruckvorrichtung bestimmten Anzahl von Halbleiterkörpern erfolgen - werden die Halbleiterkörper vorzugsweise auf ihrer Unterlage z.B. in einen Durchlaufofen eingebracht und der zur Bildung eines Legierungs- oder Sinterprozesses notwendigen Temperaturbehandlung unterworfen.The screen used in the screen printing process is already appropriate the surface structure formed on the semiconductor surfaces in question to be coated, so that no special measures for production and compliance a desired layer geometry is required on the semiconductor surfaces are. After applying the mixture or mixtures in one or more Layers on the respective semiconductor surface - that can be done simultaneously on one number of semiconductor bodies determined only by the dimensions of the screen printing device - the semiconductor bodies are preferably placed on their base, e.g. in a continuous furnace is introduced and that for the formation of an alloying or sintering process subjected to necessary temperature treatment.
Die Vorteile des Verfahrens nach der Erfindung bestehen darin, daß die metallischen Überzüge in jeder gewünschten Flächenstruktur geometriegenau ohne aufwendige Maskierungsprozesse erzielbar sind, daß weniger Verfahrensschritte sowie weniger und kostengünstigere Verfahrenseinrichtungen erforderlich sind im Vergleich zu den bekannten Verfahren, daß für die Durchführung des Verfahrens keine Arbeitskräfte mit spezieller Ausbildung benötigt werden, daß Schichten in beliebiger Anzahl mit gewünschten Eigenschaften in gewünschter Dicke herstellbar sind, und daß jede gewünschte Fertigungskapazität in gleicher Qualität der vorgesehenen Überzüge erreichbar ist.The advantages of the method according to the invention are that the metallic coatings in any desired surface structure geometrically accurate without complex masking processes can be achieved that fewer process steps as well fewer and cheaper process facilities are required are compared to the known method that for carrying out the method no skilled workers are needed that shifts in Any number with the desired properties in the desired thickness can be produced and that any desired production capacity is of the same quality as that provided Coatings is achievable.
Claims (20)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE19782829917 DE2829917A1 (en) | 1978-07-07 | 1978-07-07 | Solderable semiconductor unit prodn. - by coating with viscous mixt. of metal powder(s) in metal carbonyl, carbohydrate of liq. metal vehicle and heating |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782829917 DE2829917A1 (en) | 1978-07-07 | 1978-07-07 | Solderable semiconductor unit prodn. - by coating with viscous mixt. of metal powder(s) in metal carbonyl, carbohydrate of liq. metal vehicle and heating |
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DE2829917A1 true DE2829917A1 (en) | 1980-01-24 |
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DE19782829917 Withdrawn DE2829917A1 (en) | 1978-07-07 | 1978-07-07 | Solderable semiconductor unit prodn. - by coating with viscous mixt. of metal powder(s) in metal carbonyl, carbohydrate of liq. metal vehicle and heating |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2492164A1 (en) * | 1980-10-15 | 1982-04-16 | Radiotechnique Compelec | METHOD FOR THE SIMULTANEOUS REALIZATION OF MULTIPLE ELECTRICAL CONNECTIONS, IN PARTICULAR FOR THE ELECTRICAL CONNECTION OF A MICRO-WAFER OF SEMICONDUCTORS |
EP0110285A2 (en) * | 1982-11-27 | 1984-06-13 | Prutec Limited | Interconnection of integrated circuits |
FR2549290A1 (en) * | 1983-07-13 | 1985-01-18 | Photowatt Int | Conducting ink for producing contacts by serigraphy on semiconducting silicon, method of producing a contact by serigraphy using such an ink and photovoltaic cell provided with such a contact |
EP0205686A1 (en) * | 1985-06-13 | 1986-12-30 | Kidd, Inc. | Die-bonding electroconductive paste |
-
1978
- 1978-07-07 DE DE19782829917 patent/DE2829917A1/en not_active Withdrawn
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2492164A1 (en) * | 1980-10-15 | 1982-04-16 | Radiotechnique Compelec | METHOD FOR THE SIMULTANEOUS REALIZATION OF MULTIPLE ELECTRICAL CONNECTIONS, IN PARTICULAR FOR THE ELECTRICAL CONNECTION OF A MICRO-WAFER OF SEMICONDUCTORS |
EP0110285A2 (en) * | 1982-11-27 | 1984-06-13 | Prutec Limited | Interconnection of integrated circuits |
EP0110285A3 (en) * | 1982-11-27 | 1985-11-21 | Prutec Limited | Interconnection of integrated circuits |
FR2549290A1 (en) * | 1983-07-13 | 1985-01-18 | Photowatt Int | Conducting ink for producing contacts by serigraphy on semiconducting silicon, method of producing a contact by serigraphy using such an ink and photovoltaic cell provided with such a contact |
EP0205686A1 (en) * | 1985-06-13 | 1986-12-30 | Kidd, Inc. | Die-bonding electroconductive paste |
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