DE102009056562A1 - Integrated circuit part, has metallic regions provided above gate region resting on covering layers, partially arranged between strip conductors and not connected with drain-contact, source-contact or gate-contact - Google Patents
Integrated circuit part, has metallic regions provided above gate region resting on covering layers, partially arranged between strip conductors and not connected with drain-contact, source-contact or gate-contact Download PDFInfo
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- H01L21/822—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using silicon technology
- H01L21/8232—Field-effect technology
- H01L21/8234—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type
- H01L21/8238—Complementary field-effect transistors, e.g. CMOS
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- H01L21/822—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using silicon technology
- H01L21/8232—Field-effect technology
- H01L21/8234—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type
- H01L21/823475—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type interconnection or wiring or contact manufacturing related aspects
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- H01L23/482—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of lead-in layers inseparably applied to the semiconductor body
- H01L23/4824—Pads with extended contours, e.g. grid structure, branch structure, finger structure
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- H01L21/82—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
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- H01L21/8232—Field-effect technology
- H01L21/8234—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type
- H01L21/823418—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type with a particular manufacturing method of the source or drain structures, e.g. specific source or drain implants or silicided source or drain structures or raised source or drain structures
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- H01L21/82—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
- H01L21/822—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using silicon technology
- H01L21/8232—Field-effect technology
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- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
- H01L21/82—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
- H01L21/822—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using silicon technology
- H01L21/8232—Field-effect technology
- H01L21/8234—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type
- H01L21/8238—Complementary field-effect transistors, e.g. CMOS
- H01L21/823814—Complementary field-effect transistors, e.g. CMOS with a particular manufacturing method of the source or drain structures, e.g. specific source or drain implants or silicided source or drain structures or raised source or drain structures
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- H01L21/82—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
- H01L21/822—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using silicon technology
- H01L21/8232—Field-effect technology
- H01L21/8234—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type
- H01L21/8238—Complementary field-effect transistors, e.g. CMOS
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Abstract
Description
Die vorliegende Erfindung betrifft einen integrierten Schaltungsteil, gemäß dem Oberbegriff des Patentanspruchs 1.The present invention relates to an integrated circuit part according to the preamble of patent claim 1.
Innerhalb der Herstellung von integrierten Schaltungen werden integrierte Schaltungsteile als Bausteine verwendet. Integrierte Schaltungsteile bestehen aus vorzugsweise einem Bauelement, insbesondere einem Halbleiterbauelement und im Allgemeinen mehreren aufliegenden Leiterbahnebenen zum Anschluss der Schaltungsteile untereinander. Typische Halbleiterbauelemente sind beispielsweise MOS Transistoren, die mittels einer wenigstens Zweiebenenmetallisierung mit anderen Bauelementen verschaltet werden. Wird eine hohe Spannungsfestigkeit von den Schaltungsteilen erwartet, werden als hochsperrende Halbleiterbauelemente vorzugsweise DMOS Transistoren eingesetzt. Derartige Transistoren weisen zwischen den Source- und Drain Bereichen ein Driftgebiet mit einer über Teilen des Driftgebietes ausgebildeten Feldplatte auf, welche gleichzeitig als Gate ausgebildet ist. Des Weiteren lassen sich die DMOS Transistoren vorzugsweise als großflächige Treiberstrukturen ausbilden. Zusätzlich zu den hohen zwischen Drain und Source anliegenden Sperrspannungen, die vorzugsweise im Bereich oberhalb 10 V, höchst vorzugsweise oberhalb 50 V liegen, fließen Drainströme im Bereich bis zu einigen Ampere.Within the manufacture of integrated circuits, integrated circuit parts are used as building blocks. Integrated circuit parts consist preferably of a component, in particular a semiconductor component and in general a plurality of superposed conductor track planes for connecting the circuit components to one another. Typical semiconductor components are, for example, MOS transistors, which are connected to other components by means of at least two-level metallization. If a high dielectric strength of the circuit parts is expected, preferably high-blocking semiconductor devices DMOS transistors are used. Such transistors have between the source and drain regions a drift region with a trained over parts of the drift region field plate, which is also formed as a gate. Furthermore, the DMOS transistors can preferably be designed as large-area driver structures. In addition to the high blocking voltages applied between drain and source, which are preferably in the range above 10 V, most preferably above 50 V, drain currents flow in the range of up to a few amperes.
Untersuchungen der Anmelderin haben gezeigt, dass insbesondere bei integrierten Schaltungsteilen, welche flächig ausgebildete DMOS basierte Treiberstrukturen aufweisen, Defekte im Leitbahnsystem zu Ausfällen der integrierten Schaltungen führen können. Hierbei zeigte sich, dass eine wichtige Ausfallsursache ein Auftreten von Kurzschlüssen im Leiterbahnsystem ist. Besonders häufig sind Kurzschlüsse zwischen den Leiterbahnen, welche mit den Source Kontakten verbunden sind und den Leiterbahnen, welche mit den Drain Kontakten verbunden sind. Begünstigt wird das Auftreten von Kurzschlüssen bei den Treiberstrukturen unter anderem durch Defekte, wie Spalten und Risse, in den oberhalb den Halbleiterschichten liegenden Abdeckschichten des Leiterbahnensystems und der Duktilität des für die Leiterbahnen verwendeten Metalls, sowie den hohen Spannungen und hohen Strömen.Investigations by the applicant have shown that, in particular in the case of integrated circuit parts which have areally formed DMOS-based driver structures, defects in the interconnect system can lead to failures of the integrated circuits. It was found that an important cause of failure is the occurrence of short circuits in the printed conductor system. Particularly common are short circuits between the tracks, which are connected to the source contacts and the tracks, which are connected to the drain contacts. The occurrence of short circuits in the driver structures is favored, inter alia, by defects such as gaps and cracks in the cover layers of the interconnect system lying above the semiconductor layers and the ductility of the metal used for the interconnects, as well as the high voltages and high currents.
Der Erfindung liegt die Aufgabe zu Grunde einen integrierten Schaltungsteil möglichst zu verbessern.The invention is based on the object to improve an integrated circuit part as possible.
Die Aufgabe wird durch einen integrierten Schaltungsteil mit den Merkmalen des Patentanspruchs 1 gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand von Unteransprüchen und in der Beschreibung enthalten.The object is achieved by an integrated circuit part having the features of patent claim 1. Advantageous embodiments of the invention are the subject of dependent claims and included in the description.
Gemäß dem Gegenstand der Erfindung wird ein integrierter Schaltungsteil bereitgestellt, enthaltend wenigstens einen MOS-Transistor, vorzugsweise einen DMOS Transistor, mit einem Leiterbahnsystem, mit einem Source-Bereich aufweisend einen Source Kontakt, und mit einem Drain-Bereich aufweisend einen Drain Kontakt, und mit einem Gate-Bereich aufweisend einen Gate Kontakt, und mit einer auf den Gate-, Source- und Drain Bereichen aufliegenden ersten Abdeckschicht und einer darauf ausgebildeten ersten Leiterbahnebene, und mit einer oberhalb der ersten Leiterbahnebene aufliegenden zweiten Abdeckschicht mit einer darauf aufliegenden zweiten Leiterbahnebene, und mit einer mit dem Source Kontakt ausgebildeten verbundenen Leiterbahn, und mit einer mit dem Drain Kontakt ausgebildeten verbundenen Leiterbahn, wobei oberhalb des Gate Bereichs aufliegend auf der ersten Abdeckschicht und/oder der zweiten Abdeckschicht ein erster wenigstens teilweise zwischen der mit dem Source Kontakt verbundenen Leiterbahn und der mit dem Drain Kontakt verbundenen Leiterbahn angeordneter Metallbereich vorgesehen ist und der Metallbereich weder mit dem Drain Kontakt noch mit dem Source Kontakt oder mit dem Gate Kontakt verbunden ist.According to the subject invention, there is provided an integrated circuit part comprising at least one MOS transistor, preferably a DMOS transistor, having a wiring system having a source region having a source contact, and a drain region having a drain contact, and a gate region having a gate contact, and having a first cover layer resting on the gate, source and drain regions and a first interconnect plane formed thereon, and having a second cover layer resting above the first interconnect plane with a second interconnect plane resting thereon, and with a connected conductor track formed with the source contact, and with a connected conductor track formed with the drain contact, wherein above the gate region lying on the first cover layer and / or the second cover layer, a first at least partially between the connected to the source contact Lei track and provided with the drain contact connected to the conductor track metal region is provided and the metal region is connected neither to the drain contact nor to the source contact or to the gate contact.
Ein Vorteil der vorliegenden Erfindung ist es, dass durch die Einfügung von einem oder mehreren nicht mit den Anschlüssen eines Transistors verbundenen Metallbereichs die Zuverlässigkeit des integrierten Schaltungsteils erhöht wird. Hierdurch lässt sich insbesondere die Lebensdauer der gesamten integrierten Schaltung wesentlich erhöhen. Ganz offensichtlich stellt ein wenigstens teilweise zwischen Source und Drain Leiterbahnen liegender Metallbereich eine Barriere für eine Ausbildung von Kurzschlüssen zwischen dem Drain und der Source Anschluss dar. Untersuchungen der Anmelderin haben gezeigt, dass die Ausbildung von zwischenliegenden Metallbereichen auf der ersten Abdeckschicht, d. h. in der ersten Leiterbahnebene, oder oberhalb der ersten Abdeckschicht, d. h. in einer weiteren Leiterbahnebene, die elektrischen Transistoreigenschaften nicht beeinflusst. Ferner lassen sich die Metallbereiche auch innerhalb den auf der ersten Abdeckschicht aufliegenden weiteren Abdeckschichten ausbilden. Indem der Anschluss des Gates bei einem MOS oder DMOS Transistors de facto stromlos und nur mit einer geringen Spannung, vorzugsweise unterhalb von unterhalb von 10 V, höchst vorzugsweise unterhalb von 6 V, beaufschlagt wird, ist es hinreichend den Gateanschluss als Minimalkontakt auszubilden und ihn gegenüber den Drain und Sourcekontakten seitlich, bevorzugt in der ersten Leiterbahnebene, zu versetzen.An advantage of the present invention is that the insertion of one or more metal regions not connected to the terminals of a transistor increases the reliability of the integrated circuit device. As a result, in particular the life of the entire integrated circuit can be substantially increased. Obviously, a metal region located at least partially between the source and drain tracks constitutes a barrier to the formation of short circuits between the drain and the source terminal. Applicant's research has shown that the formation of intervening metal areas on the first capping layer, i. H. in the first circuit trace, or above the first cap layer, d. H. in another interconnect level that does not affect the transistor's electrical properties. Furthermore, the metal regions can also be formed within the further covering layers resting on the first covering layer. By the gate of a MOS or DMOS transistor de facto currentless and only with a low voltage, preferably below below 10 V, most preferably below 6 V, is applied, it is sufficient to form the gate terminal as a minimum contact and opposite him the side of the drain and source contacts, preferably in the first track plane, to move.
In einer Weiterbildung ist auf jeder Abdeckschicht, die eine Leiterbahn aufweist, welche mit dem Source Kontakt verbunden ist und die eine Leiterbahn aufweist, welche mit dem Drain Kontakt verbunden ist, ein zwischenliegender Metallbereich vorgesehen. Gemäß einer anderen Weiterbildung ist auf der obersten Abdeckschicht, die eine Leiterbahn, welche mit dem Source Kontakt verbunden ist und die eine Leiterbahn, welche mit dem Drain Kontakt verbunden ist, aufweist, kein zwischenliegender Metallbereich ausgebildet. Insbesondere bei integrierten Schaltungsteilen, die eine Vielzahl von Leiterbahnebenen aufweisen wird die Zuverlässigkeit besonders stark erhöht, wenn ab der ersten Ebene in allen weiteren Ebenen ein zwischenliegender Metallbereich ausgebildet wird.In a development, on each cover layer, which has a conductor track which is connected to the source contact and which has a conductor track, which is in contact with the drain is connected, an intermediate metal area provided. According to another embodiment, no intermediate metal region is formed on the uppermost covering layer, which has a conductor track which is connected to the source contact and which has a conductor track which is connected to the drain contact. Particularly in the case of integrated circuit parts which have a multiplicity of interconnect levels, the reliability is particularly greatly increased if an intermediate metal region is formed from the first level in all further levels.
Gemäß einer bevorzugten Ausführungsform sind die in unterschiedlichen Leiterbahnebenen dem gleichen Source Bereich eines MOS Transistors oder eines DMOS Transistors zugeordnete Leiterbahn und die dem gleichen Drain Bereich eines MOS Transistors oder eines DMOS Transistors zugeordnete Leiterbahn und die in der jeweiligen Leiterbahnebene zwischenliegenden Metallbereiche vorzugsweise teilweise, höchst vorzugsweise vollständig in vertikaler Hinsicht übereinander, d. h. stapelförmig angeordnet.According to a preferred embodiment, the conductor track assigned in different conductor track planes to the same source region of a MOS transistor or a DMOS transistor and the track assigned to the same drain region of a MOS transistor or a DMOS transistor and the metal regions lying in the respective conductor track plane are preferably partially, most preferably completely one above the other vertically, d. H. stacked arranged.
Gemäß einer bevorzugten Weiterbildung werden die in unterschiedlichen Leiterbahnebenen ausgebildeten Metallbereiche mittels eines oder mehreren Vias elektrisch miteinander verbunden. Untersuchungen der Anmelderin haben gezeigt, dass die einzelnen Metallbereiche nicht an ein Referenzpotential angeschlossen werden müssen, also floaten können oder an ein Referenzpotential geklemmt werden können.According to a preferred development, the metal regions formed in different conductor track planes are electrically connected to one another by means of one or more vias. Investigations by the applicant have shown that the individual metal regions do not have to be connected to a reference potential, ie can float or can be clamped to a reference potential.
In einer anderen Ausführungsform werden innerhalb einer Leiterbahnebene zwischen einer Leiterbahn, welche mit dem Source Kontakt verbunden ist und einer Leiterbahn, welche mit dem Drain Kontakt verbunden ist, mehrere zwischenliegender nebeneinander liegende Metallbereiche angeordnet. Die Metallbereiche lassen sich in vertikaler Richtung mit darüberliegenden zwischenliegenden Metallbereichen mittels Vias verbinden. Hierbei lassen sich nebeneinander und vorzugsweise räumlich getrennt angeordneten Metallbereiche elektrisch unterschiedlich anschließen und können ein unterschiedliches Potential aufweisen, d. h. während ein Metallbereich an ein vorgegebenes Potential geklemmt wird, floatet der benachbarte Metallbereich.In another embodiment, a plurality of intermediate juxtaposed metal regions are arranged within a conductor track plane between a conductor track, which is connected to the source contact and a conductor track, which is connected to the drain contact. The metal areas can be connected in the vertical direction with overlying metal areas by means of vias. In this case, adjacent to one another and preferably spatially separated metal regions can be electrically connected differently and can have a different potential, ie. H. while a metal region is clamped to a predetermined potential, the adjacent metal region floats.
In einer bevorzugten Weiterbildung werden die Metallbereiche streifenförmig als auf einer Abdeckschicht aufliegende Leiterbahnen ausgebildet. Hierdurch wird der Platzbedarf durch die Metallflächen besonderes gering.In a preferred embodiment, the metal regions are formed in strip form as conductor tracks resting on a covering layer. As a result, the space required by the metal surfaces is particularly low.
Gemäß einer alternativen Ausführungsform lässt sich der oder die Metallbereiche wenigstens teilweise mittels einzelnen zylinderförmigen Säulen ausbilden, wobei die Säulen mit Ausnahme der ersten Abdeckschicht wenigstens eine weitere Abdeckschicht durchtrennen. Hierbei ist es bevorzugt, die metallischen Säulen durch eine Viaätzung herzustellen und vorzugsweise die Vias mit der Unterseite auf einer Metallfläche enden zu lassen. Des Weiteren ist es bevorzugt, als Metall für die Metallfläche in den einzelnen Leiterbahnebene n die Metallverbindung der Leiterbahnen der jeweiligen Leiterbahn zu verwenden, während zur Ausbildung der Vias Hartmetalle, insbesondere Wolfram verwendet wird.According to an alternative embodiment, the metal region (s) can be formed at least partially by means of individual cylindrical columns, wherein the columns, with the exception of the first covering layer, cut through at least one further covering layer. In this case, it is preferable to produce the metallic pillars by means of a via etching and preferably to let the vias terminate with the underside on a metal surface. Furthermore, it is preferable to use as the metal for the metal surface in the individual interconnect plane n the metal interconnect of the interconnects of the respective interconnect, while tungsten carbide, in particular tungsten, is used to form the vias.
Gemäß einer bevorzugten Ausführungsform lässt sich der Metallbereich oder die Metallbereiche auch mittels einer Grabenätzung, die nach dem Ausbilden des Leiterbahnensystem erfolgt, und hiernach eine Füllung mittels eines Wolframabscheidungsprozesses erfolgt, herstellen. Die Tiefe der Grabenätzung wird bevorzugt derart eingestellt, dass diese oberhalb oder auf der ersten Abdeckschicht endet. Hierbei ist zu beachten, dass das Aspektverhältnis des Grabens derart eingestellt wird, dass eine voidfreie Füllung mit vorzugsweise einem Hartmetall erfolgen kann.According to a preferred embodiment, the metal region or regions can also be produced by means of a trench etching, which takes place after the formation of the printed conductor system and, subsequently, filling takes place by means of a tungsten deposition process. The depth of the trench etch is preferably set to terminate above or on top of the first cladding layer. It should be noted that the aspect ratio of the trench is set such that a void-free filling can be carried out with preferably a hard metal.
Die Erfindung wird nachfolgend unter Bezugnahme auf die Zeichnungen näher erläutert. Hierbei sind funktionsgleiche Schaltungsteile mit denselben Bezugszeichen versehen. Darin zeigen, dieThe invention will be explained in more detail with reference to the drawings. Here, functionally identical circuit parts are provided with the same reference numerals. Show in it, the
In der Abbildung der
Auf der zweiten Abdeckschicht A2 bzw. auf den Leiterbahnen MD2 bzw. MS2 ist eine dritte Abdeckschicht A3 ausgebildet. Durch die dritte Abdeckschicht A3 hindurch wird eine in einer dritten Leiterbahnebene M3 ausgebildete flächige ausgebildete den Source Bereichen zugeordneten Leiterbahnen MS3 jeweils mittels mehreren Vias VD2 mit den darunterliegenden ebenfalls den Source Bereichen zugeordneten Leiterbahnen MS2 verbunden. Zwar ist in der vorliegenden Abbildung der
In der
In der
In der
Untersuchungen der Anmelderin haben gezeigt, dass die in den jeweiligen Leiterbahnebenen angeordneten zwischenliegenden Metallflächen vorzugsweise an ein Referenzpotential, insbesondere Massepotential, anzuschließen sind. Durch die erfindungsgemäßen integrierten Schaltungsteile werden insbesondere bei DMOS Treiberstrukturen die Ausfälle bedingt durch Fehler im Metallsystem weitestgehend unterdrückt. Ferner ist es hinreichend wenigstens einen Metallbereich zwischen den jeweiligen Source und Drain Leiterbahnen vorzusehen und den Metallbereich gegebenenfalls säulenförmig und oder auch als vertikal stehende Platte auszuführen. Auch lassen sich die dargestellten Ausführungsformen der zwischenliegenden Metallbereiche untereinander in einer einzigen MOS Struktur kombinieren und auf Metallsysteme mit wesentlich größerer Anzahl von Leiterbahnebenen übertragen. Vorzugsweise sind die Metallbereiche der einzelnen Leiterbahnebenen stapelförmig unmittelbar übereinander anzuordnen.Investigations by the applicant have shown that the metal surfaces arranged in the respective interconnect planes are preferably to be connected to a reference potential, in particular ground potential. As a result of the integrated circuit parts according to the invention, the failures due to faults in the metal system are largely suppressed, particularly in the case of DMOS driver structures. Furthermore, it is sufficient to provide at least one metal region between the respective source and drain conductor tracks and, if appropriate, to carry out the metal region in the form of a column and / or as a vertical plate. Also, the illustrated embodiments of the intermediate metal regions can be combined with each other in a single MOS structure and transferred to metal systems with significantly greater numbers of interconnect levels. Preferably, the metal regions of the individual interconnect levels are stacked directly above each other to arrange.
Claims (11)
Priority Applications (1)
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DE200910056562 DE102009056562A1 (en) | 2009-12-03 | 2009-12-03 | Integrated circuit part, has metallic regions provided above gate region resting on covering layers, partially arranged between strip conductors and not connected with drain-contact, source-contact or gate-contact |
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DE200910056562 DE102009056562A1 (en) | 2009-12-03 | 2009-12-03 | Integrated circuit part, has metallic regions provided above gate region resting on covering layers, partially arranged between strip conductors and not connected with drain-contact, source-contact or gate-contact |
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US5907173A (en) * | 1997-08-25 | 1999-05-25 | Lg Semicon Co., Ltd. | High voltage field effect transistor and method of fabricating the same |
US20030116852A1 (en) * | 2001-12-12 | 2003-06-26 | Fujitsu Limited | Semiconductor device |
DE69531055T2 (en) * | 1994-08-24 | 2004-04-01 | Sarnoff Corp. | PIXEL OF AN ELECTROLUMINESCENT DISPLAY WITH ACTIVE MATRIX AND MANUFACTURING METHOD THEREFOR |
DE10342996A1 (en) * | 2003-09-17 | 2005-04-21 | Infineon Technologies Ag | Semiconductor arrangement comprises a substrate with integrated electronic switching elements, layer stacks arranged over the substrate, and a dummy structure arranged in two layer stacks for mechanically stabilizing the stacks |
US20070090986A1 (en) * | 2005-10-21 | 2007-04-26 | Shigeyuki Komatsu | Analog-digital converter |
US20080265339A1 (en) * | 2007-03-09 | 2008-10-30 | Shigeyuki Komatsu | Semiconductor integrated circuit |
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2009
- 2009-12-03 DE DE200910056562 patent/DE102009056562A1/en not_active Withdrawn
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DE69531055T2 (en) * | 1994-08-24 | 2004-04-01 | Sarnoff Corp. | PIXEL OF AN ELECTROLUMINESCENT DISPLAY WITH ACTIVE MATRIX AND MANUFACTURING METHOD THEREFOR |
US5907173A (en) * | 1997-08-25 | 1999-05-25 | Lg Semicon Co., Ltd. | High voltage field effect transistor and method of fabricating the same |
US20030116852A1 (en) * | 2001-12-12 | 2003-06-26 | Fujitsu Limited | Semiconductor device |
DE10342996A1 (en) * | 2003-09-17 | 2005-04-21 | Infineon Technologies Ag | Semiconductor arrangement comprises a substrate with integrated electronic switching elements, layer stacks arranged over the substrate, and a dummy structure arranged in two layer stacks for mechanically stabilizing the stacks |
US20070090986A1 (en) * | 2005-10-21 | 2007-04-26 | Shigeyuki Komatsu | Analog-digital converter |
US20080265339A1 (en) * | 2007-03-09 | 2008-10-30 | Shigeyuki Komatsu | Semiconductor integrated circuit |
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