DE10124774B4 - Semiconductor component having at least one semiconductor chip on a base chip serving as substrate and method for its production - Google Patents
Semiconductor component having at least one semiconductor chip on a base chip serving as substrate and method for its production Download PDFInfo
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Abstract
Halbleiterbauelement mit zumindest einem Halbleiterchip (20) auf einem als Substrat dienenden Basischip (10), bei dem – der zumindest eine Halbleiterchip (20) und der Basischip (10) Kontaktflächen (11, 21) aus Metall aufweisen, die über jeweilige Durchkontaktierungen (15, 25) Kontaktpads (14, 24) in einer jeweiligen obersten Metallage des Halbleiterchips (20) und des Basischips (10) kontaktieren, – der zumindest eine Halbleiterchip (20) und der Basischip (10) jeweils zumindest eine weitere Metallfläche (13, 23) aufweisen, die einander gegenüberliegend angeordnet sind, und die keinen elektrisch leitenden Kontakt zu den Kontaktpads (14, 24) aufweisen, – der zumindest eine Halbleiterchip so zu dem Basischip hin ausgerichtet ist, dass einander zugeordnete Kontaktflächen und einander gegenüberliegende weitere Metallflächen (13, 23) des zumindest einen Halbleiterchips und des Basischips einander zugewandt sind und die einander zugewandten Kontaktflächen und die einander zugewandten weiteren Metallflächen (13, 23) elektrisch leitend miteinander verbunden sind, – der Basischip Bauelemente enthält, die in einer ersten Technologie gefertigt sind und – der zumindest eine Halbleiterchip Bauelemente enthält, die in einer zweiten Technologie gefertigt sind, bei dem – der Abstand zwischen einer jeweiligen Kontaktfläche (21) des zumindest einen Halbleiterchips (20) und der damit verbundenen Kontaktfläche (11) des Basischips (10) weniger als 10 μm beträgt und – die einander zugewandten Kontaktflächen und weiteren Metallflächen über zumindest eine Metallschicht elektrisch leitend miteinander verbunden sind.Semiconductor component having at least one semiconductor chip (20) on a base chip (10) serving as substrate, in which - the at least one semiconductor chip (20) and the base chip (10) have contact surfaces (11, 21) made of metal which are connected via respective plated-through holes (15 , 25) contacting contact pads (14, 24) in a respective uppermost metal layer of the semiconductor chip (20) and of the base chip (10), - the at least one semiconductor chip (20) and the base chip (10) each have at least one further metal surface (13, 23 ), which are arranged opposite to one another, and which have no electrically conductive contact with the contact pads (14, 24), - the at least one semiconductor chip is oriented toward the base chip such that contact surfaces assigned to one another and further metal surfaces (13, 23) of the at least one semiconductor chip and the base chip face each other and zugewan the mutually facing contact surfaces and each other dten further metal surfaces (13, 23) are electrically conductively connected to each other - the base chip contains components which are manufactured in a first technology and - which contains at least one semiconductor chip components, which are manufactured in a second technology, in which - the distance between a respective contact surface (21) of the at least one semiconductor chip (20) and the associated contact surface (11) of the base chip (10) is less than 10 .mu.m and - the mutually facing contact surfaces and further metal surfaces are electrically conductively connected to one another via at least one metal layer.
Description
Halbleiterbauelement mit zumindest einem Halbleiterchip auf einem als Substrat dienenden Basischip und Verfahren zu dessen Herstellung.Semiconductor component having at least one semiconductor chip on a base chip serving as substrate and method for its production.
Die vorliegende Erfindung betrifft ein Halbleiterbauelement mit zumindest einem Halbleiterchip auf einem als Substrat dienenden Basischip. Die Erfindung betrifft weiterhin ein Verfahren zur Herstellung eines derartigen Halbleiterbauelementes.The present invention relates to a semiconductor device having at least one semiconductor chip on a base chip serving as a substrate. The invention further relates to a method for producing such a semiconductor device.
Viele Halbleiterbauelemente beinhalten Schaltungsteile, die mit unterschiedlichen Technologien gefertigt werden müssen. Beispielsweise werden Logik-Schaltungen mit Speicher-Schaltungen kombiniert. Logik-Schaltungen erfordern andere Herstellungsverfahren als die einfach aufgebauten Speicherbausteine. Ähnliches gilt bei einer Kombination eines Leistungsschalters mit seiner Ansteuerung. Derartige Halbleiterbauelemente werden beispielsweise aus zwei gehäusten integrierten Schaltungen nebeneinander auf einem Substrat montiert. Einer der Bausteine beinhaltet dann beispielsweise den Speicher, während die andere integrierte Schaltung sämtliche Komponenten für die Ansteuerung beinhaltet. Die elektrische Verbindung der integrierten Schaltungen erfolgt über das Substrat. Halbleiterbauelemente, die nach diesem Prinzip gefertigt sind, sind jedoch relativ groß und benötigen zu ihrer Herstellung eine große Anzahl an Arbeitsschritten.Many semiconductor devices include circuit parts that must be manufactured using different technologies. For example, logic circuits are combined with memory circuits. Logic circuits require different manufacturing methods than the simply constructed memory chips. The same applies to a combination of a circuit breaker with its control. Such semiconductor devices are mounted side by side on a substrate, for example, of two packaged integrated circuits. One of the devices then includes, for example, the memory, while the other integrated circuit includes all the components for driving. The electrical connection of the integrated circuits takes place via the substrate. However, semiconductor devices manufactured according to this principle are relatively large and require a large number of work steps for their production.
Alternativ ist es bekannt, sämtliche Schaltungskomponenten in einem einzigen Halbleitersubstrat auszubilden. Ein Halbleiterbauelement, das sämtliche Schaltungsteile in einem Halbleitersubstrat vereint, benötigt zwar wenig Platz, ist jedoch bei der Prozessierung aufwendig und teuer herzustellen.Alternatively, it is known to form all the circuit components in a single semiconductor substrate. Although a semiconductor component which combines all the circuit parts in a semiconductor substrate requires little space, it is complicated and expensive to produce during processing.
Die Aufgabe der Erfindung ist es, ein Halbleiterbauelement mit zumindest zwei funktionellen Schaltungen anzugeben, welche in unterschiedlichen Technologien hergestellt sind, wobei insgesamt eine möglichst einfache und kostengünstige Anordnung erzielbar sein soll. Weiterhin soll ein Verfahren zum Herstellen eines derartigen Halbleiterbauelementes angegeben werden, das ebenfalls auf einfache Weise hergestellt werden kann.The object of the invention is to provide a semiconductor device with at least two functional circuits, which are manufactured in different technologies, wherein overall a simple and inexpensive arrangement should be achievable. Furthermore, a method for producing such a semiconductor device is to be specified, which can also be produced in a simple manner.
Diese Aufgaben werden mit den Merkmalen der Patentansprüche 1 und 8 gelöst. Jeweils vorteilhafte Ausgestaltungen ergeben sich aus den abhängigen Patentansprüchen.These objects are achieved with the features of claims 1 and 8. In each case advantageous embodiments emerge from the dependent claims.
Die Erfindung schlägt gemäß Anspruch 1 ein Halbleiterbauelement mit zumindest einem Halbleiterchip auf einem als Substrat dienenden Basischip vor. Der zumindest eine Halbleiterchip und der Basischip weisen dabei Kontaktflächen aus Metall auf. Der zumindest eine Halbleiterchip ist dabei so zu dem Basischip hin ausgerichtet, daß einander zugeordnete Kontaktflächen des zumindest einen Halbleiterchips und des Basischips einander zugewandt sind und die einander zugewandten Kontaktfläche elektrisch leitend miteinander verbunden sind. Ein kostengünstiges und einfach herzustellendes Halbleiterbauelement ist dadurch möglich, daß der Basischip Bauelemente enthält, die in einer ersten Technologie gefertigt sind, während der zumindest eine Halbleiterchip Bauelemente enthält, die in einer zweiten Technologie gefertigt sind.The invention proposes according to claim 1, a semiconductor device with at least one semiconductor chip on a serving as a substrate base chip. The at least one semiconductor chip and the base chip in this case have contact surfaces made of metal. The at least one semiconductor chip is aligned with the base chip such that mutually associated contact surfaces of the at least one semiconductor chip and the base chip face each other and the mutually facing contact surface are electrically conductively connected to one another. A low-cost and easy-to-manufacture semiconductor device is possible in that the base chip contains components which are manufactured in a first technology, while the at least one semiconductor chip contains components which are manufactured in a second technology.
Die Erfindung schlägt folglich ein Halbleiterbauelement vor, bei dem Halbleiterchips in zwei Ebenen gestapelt sind. Diese Anordnung ist ausreichend, um die gängigsten Anwendungen, welche integrierte Schaltungen in unterschiedlichen Technologien benötigen, abzudecken. Gemäß der Erfindung werden der zumindest eine Halbleiterchip und der Basischip ”Face to face” miteinander kontaktiert. Mit einem einfachen Verfahrensschritt ist somit die Herstellung aller notwendigen Kontakte zwischen diesen beiden integrierten Schaltungen möglich.The invention thus proposes a semiconductor device in which semiconductor chips are stacked in two planes. This arrangement is sufficient to cover the most common applications requiring integrated circuits in different technologies. According to the invention, the at least one semiconductor chip and the base chip "face to face" are contacted with each other. With a simple process step thus the production of all necessary contacts between these two integrated circuits is possible.
Sofern notwendig, können auf dem Basischip auch eine Mehrzahl an Halbleiterchips aufgebracht und kontaktiert werden. Die Halbleiterchips sind dann nebeneinanderliegend auf dem Basischip angeordnet.If necessary, a plurality of semiconductor chips can also be applied and contacted on the base chip. The semiconductor chips are then arranged side by side on the base chip.
In einer bevorzugten Ausgestaltung weist der Basischip einen größeren Flächeninhalt auf als der Halbleiterchip oder die Mehrzahl von Halbleiterchips. Dabei sind in dem nicht überdeckten Bereich des Basischips Kontaktelemente zur externen Kontaktierung des Halbleiterbauelementes vorgesehen. Die Kontaktelemente können beispielsweise als Bondpads ausgebildet sein. Über diese kann das Halbleiterbauelement über Bonddrähte mit entsprechenden Kontaktelementen eines Substrates, auf welchem das Halbleiterbauelement montiert ist, kontaktiert werden.In a preferred embodiment, the base chip has a larger surface area than the semiconductor chip or the plurality of semiconductor chips. In this case, contact elements for external contacting of the semiconductor component are provided in the uncovered region of the base chip. The contact elements may be formed, for example, as bond pads. About this, the semiconductor device via bonding wires with corresponding contact elements of a substrate, on which the semiconductor device is mounted, are contacted.
Erfindungsgemäß weist lediglich der Basischip Kontaktelemente auf. Die auf dem Basischip montierten Halbleiterchips hingegen verfügen nicht über derartige Kontaktelemente. Die elektrische Verbindung nach außen wird über den Basischip und dessen Kontaktelemente hergestellt. Dadurch, daß der zumindest eine auf dem Basischip montierte Halbleiterchip keine Kontaktelemente aufweist, können die Halbleiterchips sehr klein ausgebildet sein. Dies ermöglicht eine beträchtliche Erhöhung der Flächenausbeute auf einem Wafer. Darüber hinaus kann darauf verzichtet werden, bei jedem der integrierten Schaltungen ein separates Gehäuse vorzusehen. Die miteinander kontaktierten integrierten Schaltungen können zusammen in einem einzigen Gehäuse untergebracht werden.According to the invention, only the base chip has contact elements. The mounted on the base chip semiconductor chips, however, do not have such contact elements. The electrical connection to the outside is made via the base chip and its contact elements. Because the at least one semiconductor chip mounted on the base chip has no contact elements, the semiconductor chips can be made very small. This allows a considerable increase in the area yield on a wafer. In addition, it may be omitted to provide a separate housing in each of the integrated circuits. The interconnected integrated circuits can be accommodated together in a single housing.
Vorzugsweise ist der Flächeninhalt der Kontaktelemente, die zur externen Kontaktierung vorgesehen sind, größer als der Flächeninhalt der Kontaktflächen, über die der Basischip und der zumindest eine Halbleiterchip elektrisch verbunden werden. Hierdurch wird eine optimierte Flächen- und Volumenausbeute des Halbleiterbauelementes sichergestellt, da lediglich verhältnismäßig wenige große Kontaktelemente auf dem Basischip vorgesehen werden müssen. Da die Halbleiterchips und der Basischip ”Face to face” miteinander kontaktiert werden, können hierfür sehr kleine Kontaktflächen vorgesehen werden.Preferably, the surface area of the contact elements which are provided for external contacting is greater than the surface area of the contact areas, via which the base chip and the at least one semiconductor chip are electrically connected. As a result, an optimized area and volume yield of the semiconductor device is ensured, since only relatively few large contact elements must be provided on the base chip. Since the semiconductor chips and the base chip "face to face" are contacted with each other, very small contact surfaces can be provided for this purpose.
Gemäß dem Gedanken der Erfindung beinhaltet der Basischip flächenintensive Strukturen, während der zumindest eine Halbleiterchip komplexe logische Strukturen beinhaltet. Der Basischip beinhaltet Elemente, die in der billigeren Technologie hergestellt werden können, da in diesem Fall eine geringere Ausbeute an Basis-chips pro Wafer nicht so stark ins Gewicht fällt. Der Basis-chip kann beispielsweise Schalter, ESD-Strukturen, Busleitungen, Prüfschaltungen, Sensoren und dergleichen beinhalten. Er stellt somit ein aktives, intelligentes Substrat für die darauf montierten Halbleiterchips dar. Vorzugsweise verfügt der Basischip über möglichst wenige Metallebenen, um eine einfache und kostengünstige Fertigung zu ermöglichen.In accordance with the concept of the invention, the base chip includes area-intensive structures, while the at least one semiconductor chip includes complex logical structures. The base chip contains elements that can be manufactured using the cheaper technology, since in this case a lower yield of base chips per wafer is less significant. The base chip may include, for example, switches, ESD structures, bus lines, test circuits, sensors, and the like. It thus represents an active, intelligent substrate for the semiconductor chips mounted thereon. Preferably, the base chip has as few metal planes as possible in order to enable simple and cost-effective production.
Die Halbleiterchips hingegen beinhalten komplexe logische Strukturen und verfügen über eine größere Anzahl an Metallebenen. Da die Herstellung derartiger Halbleiterchips aufwendiger und somit teurer ist, ist es wünschenswert, diese Halbleiterchips möglichst klein auszuführen. Diesem Wunsch wird mit dem vorgeschlagenen Halbleiterbauelement Rechnung getragen.The semiconductor chips, on the other hand, contain complex logic structures and have a greater number of metal levels. Since the production of such semiconductor chips is more complicated and thus more expensive, it is desirable to make these semiconductor chips as small as possible. This desire is taken into account with the proposed semiconductor device.
In einer weiteren Ausbildung der Erfindung kann der zumindest eine Halbleiterchip dünn geschliffen sein. Hierdurch ergibt sich in der Bauhöhe optimiertes Halbleiterbauelement.In a further embodiment of the invention, the at least one semiconductor chip can be ground thin. This results in the height optimized semiconductor device.
In einer anderen Ausgestaltung ist vorgesehen, daß der Halbleiterchip als zwei- oder mehrlagiger Chipstapel ausgebildet ist, wobei der Chipstapel vorzugsweise als dreidimensional integriertes System ausgebildet ist. Hierdurch lassen sich bei verhältnismäßig geringen Volumen hochkomplexe integrierte Schaltungen realisieren. Als dreidimensional integrierte Systeme ausgebildete Chipstapel sind beispielsweise aus der
Der Abstand zwischen einer jeweiligen Kontaktfläche des zumindest einen Halbleiterchips und der damit verbundenen Kontaktfläche des Basischips beträgt weniger als 10 μm. Die elektrische und mechanische Verbindung zwischen den Kontaktflächen der integrierten Schaltungen kann durch das Verfahren der Diffusionslöttechnik (SOLID), das an sich bekannt ist, erreicht werden. Mit dieser Verbindungstechnik können Abstände von weniger als 10 μm erzielt werden. Bei bevorzugten Ausführungsformen ist dieser Abstand nur höchstens halb so groß oder besser nur ein Viertel so groß. Ein typischer Abstand von 2 μm zwischen den Kontaktflächen bei gleichzeitig hoher Kontaktdichte kann somit erzielt werden.The distance between a respective contact surface of the at least one semiconductor chip and the associated contact surface of the base chip is less than 10 microns. The electrical and mechanical connection between the contact surfaces of the integrated circuits can be achieved by the method of the diffusion soldering technique (SOLID), which is known per se. Distances of less than 10 μm can be achieved with this connection technology. In preferred embodiments, this distance is only at most half as large or better only a quarter as large. A typical distance of 2 microns between the contact surfaces at the same time high contact density can thus be achieved.
Um eine ganzflächige Verbindung mit Ausnahme der Kontaktflächen zu erreichen, wird entweder der zumindest eine Halbleiterchip mit dem Basischip nicht erfindungsgemäß verklebt oder es wird erfindungsgemäß zusätzlich zu den metallischen Kontaktflächen zumindest eine weitere Metallfläche vorgesehen, die mit einer gegenüber liegend angeordneten weiteren Metallfläche in demselben Verfahrensschritt verlötet wird, in dem auch die Kontaktflächen elektrisch leitend miteinander verbunden werden. Das kann durch das angegebene Verfahren des Diffusionslötens geschehen. Es werden somit die elektrisch leitenden Verbindungen zwischen den Kontaktflächen auf dem zumindest einen Halbleiterchip und auf dem Basischip hergestellt und gleichzeitig entsprechende Verbindungen zwischen den weiteren hergestellt, die zunächst für die mechanische Verbindung vorgesehen sind. Denkbar ist auch, daß die weiteren Metallflächen eine zusätzliche elektrische Funktion übernehmen. Die weiteren Metallflächen können dann als zusätzliche elektrische Verdrahtungsebene verwendet werden. Bei einer durchgehenden weiteren Metallfläche kann diese die Funktion einer Abschirmungsschicht zwischen den elektrischen Bauelementen in dem Basischip und dem zumindest einen Halbleiterchip übernehmen. Somit ist auf einfache Weise eine Entkopplung der Bauelemente in den miteinander verbundenen integrierten Schaltungen möglich.In order to achieve a whole-area connection with the exception of the contact surfaces, either the at least one semiconductor chip is not glued to the base chip according to the invention or at least one further metal surface is provided according to the invention in addition to the metallic contact surfaces soldered to a further metal surface arranged opposite in the same process step is, in which the contact surfaces are electrically connected to each other. This can be done by the specified method of diffusion brazing. Thus, the electrically conductive connections between the contact surfaces on the at least one semiconductor chip and on the base chip are produced and at the same time corresponding connections between the others are produced, which are initially provided for the mechanical connection. It is also conceivable that the other metal surfaces take on an additional electrical function. The further metal surfaces can then be used as an additional electrical wiring level. In a continuous further metal surface, this can take over the function of a shielding layer between the electrical components in the base chip and the at least one semiconductor chip. Thus, a decoupling of the Components in the interconnected integrated circuits possible.
Statt einer Diffusionslotschicht kann auch nicht erfindungsgemäß eine Verbindung von jeweiligen Kontaktflächen des zumindest einen Halbleiterchips und des Basischips über Lotkugeln erfolgen, um die elektrische Kontaktierung zu realisieren. Vorzugsweise ist in diesem Fall zwischen dem zumindest einen Halbleiterchip und dem Basischip außerhalb der durch die Kontaktflächen und/oder die weiteren Metallflächen eingenommenen Bereiche eine Füllschicht vorhanden, um die Anordnung zusätzlich mechanisch zu stabilisieren. Diese Füllschicht ist als sogenannter ”Underfill” bekannt.Instead of a diffusion solder layer, it is also not possible according to the invention to connect respective contact surfaces of the at least one semiconductor chip and the base chip via solder balls in order to realize the electrical contacting. In this case, a filling layer is preferably present between the at least one semiconductor chip and the base chip outside the regions occupied by the contact surfaces and / or the further metal surfaces in order to additionally mechanically stabilize the arrangement. This filling layer is known as a so-called "underfill".
Das erfindungsgemäße Verfahren zur Herstellung des oben beschriebenen Halbleiterbauelementes umfaßt die folgenden Schritte: Auf Waferebene werden jeweils die Kontaktflächen auf den Halbleiterchips und den Basischips erzeugt. Im nächsten Schritt werden die Halbleiterchips, also diejenigen integrierten Schaltungen, welche auf die Basischips aufgesetzt werden, aus dem Waferverbund vereinzelt. Anschließend wird zumindest ein Halbleiterchip auf jedem Basischip derart kontaktiert, daß einander zugeordnete Kontaktflächen des zumindest einen Halbleiterchips und des Basischips einander zugewandt sind und die einander zugewandten Kontaktflächen elektrisch leitend miteinander verbunden werden. Hernach wird der Verbund aus dem zumindest einen Halbleiterchip und dem Basischip aus dem Wafer vereinzelt. Alle Vorbehandlungsschritte wie das Abscheiden verschiedener Metallisierungsschichten, deren Strukturierung durch Lithographie und so weiter, werden somit kostengünstig als Waferprozeß durchgeführt. Nach dem Durchlauf der oben beschriebenen Verfahrensschritte können die übereinander gelegenen integrierten Schaltungen gehäust oder direkt auf ein Substrat montiert werden.The method according to the invention for producing the semiconductor component described above comprises the following steps: At the wafer level, the contact surfaces on the semiconductor chips and the base chips are generated in each case. In the next step, the semiconductor chips, ie those integrated circuits which are placed on the base chips, are separated from the wafer composite. Subsequently, at least one semiconductor chip is contacted on each base chip such that mutually associated contact surfaces of the at least one semiconductor chip and the base chip face each other and the mutually facing contact surfaces are electrically conductively connected to each other. Thereafter, the composite of the at least one semiconductor chip and the base chip is separated from the wafer. All pretreatment steps such as the deposition of various metallization layers, their structuring by lithography and so on, are thus carried out inexpensively as a wafer process. After passing through the process steps described above, the stacked integrated circuits can be packaged or mounted directly onto a substrate.
Das Erzeugen der Kontaktflächen umfaßt dabei das Aufbringen einer Folge strukturierter Metallschichten, bestehend aus einer Haftschicht, einer Diffusionsbarriere und einer lötbaren Metallschicht. Die lötbare Metallschicht wird vorzugsweise durch Sputtern oder galvanische Verstärkung aufgebracht. Das Kontaktieren des Halbleiterchips auf dem Basischip erfolgt vorzugsweise unter Ausübung eines Anpreßdrucks während des Lötvorganges. Dabei wird bevorzugt das eingangs erwähnte Diffusionslötverfahren angewendet.The production of the contact surfaces comprises the application of a sequence of structured metal layers, consisting of an adhesion layer, a diffusion barrier and a solderable metal layer. The solderable metal layer is preferably applied by sputtering or galvanic reinforcement. The contacting of the semiconductor chip on the base chip is preferably carried out while applying a contact pressure during the soldering process. In this case, the diffusion diffusion method mentioned at the beginning is preferably used.
Anhand der nachfolgenden Figuren erfolgt eine genauere Beschreibung von Beispielen des erfindungsgemäßen Halbleiterbauelementes. Es zeigen:Reference to the following figures is a more detailed description of examples of the semiconductor device according to the invention. Show it:
Der Basischip ist, wie aus
Das erfindungsgemäße Halbleiterbauelement weist den Vorteil auf, daß der in der teureren Technologie gefertigte Halbleiterchip
Dadurch können besonders kleine Flächen des Halbleiterchips
Auf der Oberfläche sowohl des Basischips
Zur Kontaktierung werden der Halbleiterchip
Auf gleiche Weise wie die Kontaktflächen
Aus der obigen Beschreibung lassen sich bereits die Vorteile dieses Verbindungsverfahrens erkennen. Der mechanische Kontakt zwischen dem Halbleiterchip
Die Halbleiterchips und die Basischips
Durch die ”Face to face”-Kontaktierung von Basischip
Gegenüber der Verwendung von Lotkugeln können die Kontaktflächen
Die ”Face to face”-Kontaktierung sorgt zudem für kurze Verbindungswege zwischen dem Basischip
Die externe Kontaktierung des Halbleiterbauelementes erfolgt, wie oben bereits erwähnt, über die Kontaktelemente
Alternativ können die Kontaktelemente
Dieses Vorgehen weist den Vorteil auf, daß die Lithographie keinen Vorhalt benötigt. Die Strukturen werden genau reproduziert. Statt einer Kontaktlithographie kann somit auch die sogenannte Proximity-Lithographie eingesetzt werden. Hierdurch können Kosten für die Masken eingespart und die Prozeßsicherheit gesteigert werden. Letzteres ist somit bei geringen Kosten die genauere und damit die bevorzugte Methodik.This approach has the advantage that the lithography requires no Vorhalt. The structures are reproduced exactly. Instead of contact lithography, so-called proximity lithography can thus also be used. As a result, costs for the masks can be saved and the process reliability can be increased. The latter is thus the more accurate and thus the preferred methodology at low cost.
Zur Kontaktierung des Basischips mit dem Halbleiterchip muß auf die Kontaktflächen des einen oder des anderen noch eine Lotschicht aufgebracht werden. Diese Lotschicht kann vor oder nach dem Entfernen der Lackstege
Eine dritte Methodik zum Aufbringen der Kontaktflächen
Eine vierte Variante zur Herstellung der Kontaktflächen
Sowohl bei dem Sputtern durch eine Schattenmaske hindurch als auch bei dem Lift-off-Verfahren können die Lotlegierungen auch hergestellt werden, indem die Metallschichten
Vor dem Aufbringen der Lackmaske
Die Figurenbeschreibung erfolgte anhand mehrerer Beispiele, bei denen genau ein Halbleiterchip
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 1010
- Basischipbased chip
- 1111
- Kontaktflächecontact area
- 1212
- Kontaktelementcontact element
- 1313
- Metallflächemetal surface
- 1414
- Kontaktpadcontact pad
- 1515
- Durchkontaktierungvia
- 1616
- Isolationsgrabenisolation trench
- 1717
- Barriereschichtbarrier layer
- 1818
- Metallschichtmetal layer
- 1919
- Keimschichtseed layer
- 2020
- HalbleiterchipSemiconductor chip
- 2121
- Kontaktflächecontact area
- 2222
- 2323
- Metallflächemetal surface
- 2424
- Kontaktpadcontact pad
- 2525
- Durchkontaktierungvia
- 2626
- Isolationsgrabenisolation trench
- 3030
- Lotkugelnsolder balls
- 3131
- Füllschichtfilling layer
- 3232
- Lotschichtsolder layer
- 3333
- Lackpaint
- 3434
- Schattenmaskeshadow mask
- 3535
- Stegweb
Claims (10)
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DE10124774.5A DE10124774B4 (en) | 2001-05-21 | 2001-05-21 | Semiconductor component having at least one semiconductor chip on a base chip serving as substrate and method for its production |
TW091108980A TW544903B (en) | 2001-05-21 | 2002-04-30 | Semiconductor component with at least one semiconductor chip on a base chip serving as a substrate and method of production the said component |
CNB028103963A CN100461356C (en) | 2001-05-21 | 2002-05-17 | Semiconductor component with at least one semiconductor chip on base chip serving as substrate and method for production thereof |
PCT/DE2002/001783 WO2002095817A2 (en) | 2001-05-21 | 2002-05-17 | Semiconductor component with at least one semiconductor chip on a base chip serving as substrate and method for production thereof |
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DE10219353B4 (en) | 2002-04-30 | 2007-06-21 | Infineon Technologies Ag | Semiconductor device with two semiconductor chips |
DE10300711B4 (en) * | 2003-01-10 | 2007-10-04 | Infineon Technologies Ag | Method for passivating a semiconductor chip stack |
DE10303588B3 (en) * | 2003-01-29 | 2004-08-26 | Infineon Technologies Ag | Vertical assembly process for semiconductor devices |
DE10313047B3 (en) | 2003-03-24 | 2004-08-12 | Infineon Technologies Ag | Semiconductor chip stack manufacturing method incorporates bridging of conductor paths of one semiconductor chip for design modification |
EP1617473A1 (en) | 2004-07-13 | 2006-01-18 | Koninklijke Philips Electronics N.V. | Electronic device comprising an ESD device |
DE102004055677A1 (en) * | 2004-11-18 | 2006-06-01 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Compound chip carrier, as an image sensor for military night sights and the like, has a chip bonded to the substrate with contact surfaces and conductive zones through the substrate |
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US5897341A (en) * | 1998-07-02 | 1999-04-27 | Fujitsu Limited | Diffusion bonded interconnect |
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DE69325749T2 (en) * | 1992-05-22 | 2000-02-17 | Nat Semiconductor Corp | Stacked multi-chip modules and manufacturing processes |
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DE19907276A1 (en) * | 1999-02-20 | 2000-09-07 | Bosch Gmbh Robert | Producing solder connection between electrical/electronic component and carrier substrate involves solder coating of pure tin with thickness of less than 10 microns applied to metal pad |
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DE2902002A1 (en) * | 1979-01-19 | 1980-07-31 | Gerhard Krause | Three=dimensional integrated circuits - mfd. by joining wafer stack with contacts through conductive adhesive |
JPS62144346A (en) * | 1985-12-19 | 1987-06-27 | Matsushita Electric Ind Co Ltd | Semiconductor integrated circuit element |
US5790384A (en) * | 1997-06-26 | 1998-08-04 | International Business Machines Corporation | Bare die multiple dies for direct attach |
JP2000294724A (en) * | 1999-04-09 | 2000-10-20 | Matsushita Electronics Industry Corp | Semiconductor device and its manufacture |
US6204089B1 (en) * | 1999-05-14 | 2001-03-20 | Industrial Technology Research Institute | Method for forming flip chip package utilizing cone shaped bumps |
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2001
- 2001-05-21 DE DE10124774.5A patent/DE10124774B4/en not_active Expired - Fee Related
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2002
- 2002-04-30 TW TW091108980A patent/TW544903B/en active
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DE69325749T2 (en) * | 1992-05-22 | 2000-02-17 | Nat Semiconductor Corp | Stacked multi-chip modules and manufacturing processes |
US5977640A (en) * | 1998-06-26 | 1999-11-02 | International Business Machines Corporation | Highly integrated chip-on-chip packaging |
US5897341A (en) * | 1998-07-02 | 1999-04-27 | Fujitsu Limited | Diffusion bonded interconnect |
EP1001465A2 (en) * | 1998-11-12 | 2000-05-17 | United Memories, Inc. | Multi-chip memory apparatus and associated method |
DE19907276A1 (en) * | 1999-02-20 | 2000-09-07 | Bosch Gmbh Robert | Producing solder connection between electrical/electronic component and carrier substrate involves solder coating of pure tin with thickness of less than 10 microns applied to metal pad |
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CN100461356C (en) | 2009-02-11 |
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DE10124774A1 (en) | 2002-12-12 |
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