DE19742120B4 - Method for producing a wiring for a semiconductor device - Google Patents
Method for producing a wiring for a semiconductor device Download PDFInfo
- Publication number
- DE19742120B4 DE19742120B4 DE19742120A DE19742120A DE19742120B4 DE 19742120 B4 DE19742120 B4 DE 19742120B4 DE 19742120 A DE19742120 A DE 19742120A DE 19742120 A DE19742120 A DE 19742120A DE 19742120 B4 DE19742120 B4 DE 19742120B4
- Authority
- DE
- Germany
- Prior art keywords
- forming
- wiring
- substrate
- polysilicon
- gate electrode
- 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.)
- Expired - Fee Related
Links
- 239000004065 semiconductor Substances 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 239000000758 substrate Substances 0.000 claims abstract description 35
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract description 31
- 229920005591 polysilicon Polymers 0.000 claims abstract description 31
- 229920002120 photoresistant polymer Polymers 0.000 claims abstract description 18
- 239000003870 refractory metal Substances 0.000 claims abstract description 10
- 238000005530 etching Methods 0.000 claims abstract description 7
- 239000012535 impurity Substances 0.000 claims abstract description 6
- 238000000151 deposition Methods 0.000 claims abstract 4
- 239000011248 coating agent Substances 0.000 claims abstract 3
- 238000000576 coating method Methods 0.000 claims abstract 3
- 238000000034 method Methods 0.000 claims description 24
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 claims description 19
- 229910021332 silicide Inorganic materials 0.000 claims description 17
- 238000005229 chemical vapour deposition Methods 0.000 claims description 11
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 8
- 229910052719 titanium Inorganic materials 0.000 claims description 8
- 239000010936 titanium Substances 0.000 claims description 8
- 229910021417 amorphous silicon Inorganic materials 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- WQJQOUPTWCFRMM-UHFFFAOYSA-N tungsten disilicide Chemical compound [Si]#[W]#[Si] WQJQOUPTWCFRMM-UHFFFAOYSA-N 0.000 claims description 5
- 229910021342 tungsten silicide Inorganic materials 0.000 claims description 5
- 239000010941 cobalt Substances 0.000 claims description 4
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 150000002500 ions Chemical class 0.000 claims description 3
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 2
- 239000005380 borophosphosilicate glass Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 238000000059 patterning Methods 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims 6
- 229910052710 silicon Inorganic materials 0.000 claims 6
- 239000010703 silicon Substances 0.000 claims 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims 2
- XPDWGBQVDMORPB-UHFFFAOYSA-N Fluoroform Chemical compound FC(F)F XPDWGBQVDMORPB-UHFFFAOYSA-N 0.000 claims 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims 1
- 230000008021 deposition Effects 0.000 claims 1
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 238000002844 melting Methods 0.000 claims 1
- 150000002739 metals Chemical class 0.000 claims 1
- 239000011733 molybdenum Substances 0.000 claims 1
- 229910052759 nickel Inorganic materials 0.000 claims 1
- 238000001259 photo etching Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 description 47
- 239000003990 capacitor Substances 0.000 description 10
- 238000012856 packing Methods 0.000 description 6
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 5
- 238000001020 plasma etching Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910021341 titanium silicide Inorganic materials 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910008486 TiSix Inorganic materials 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—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
- 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
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76838—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the conductors
- H01L21/76895—Local interconnects; Local pads, as exemplified by patent document EP0896365
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B12/00—Dynamic random access memory [DRAM] devices
- H10B12/01—Manufacture or treatment
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- Semiconductor Memories (AREA)
- Electrodes Of Semiconductors (AREA)
Abstract
Verfahren
zum Herstellen einer Verdrahtung für Halbleiterbauelemente, gekennzeichnet
durch die nacheinander erfolgenden Schritte:
– Festlegen
eines aktiven Bereichs und eines Feldbereichs auf einem Substrat
(40) und Ausbilden eines Feldisolierfilms (41) in dem Feldbereich,
– Ausbilden
einer Gateelektrode (43) auf dem Substrat (40) in dem aktiven Bereich,
– Ausbilden
erster und zweiter Verunreinigungsbereiche (44, 47) in dem Substrat
(40) in dem aktiven Bereich auf beiden Seiten der Gateelektrode
(43),
– Ausbilden
isolierenden Seitenwände
(46) an den Seiten der Gateelektrode (43),
– Abscheiden eines hochschmelzenden
Metalls (48) und einer Polysiliziumschicht (49) nacheinander auf
der gesamten Oberfläche
des Substrats (40),
– Ausbilden
eines strukturierten Photoresistfilms auf der Polysiliziumschicht
(49) durch Beschichten, Belichten und Entwickeln;
– Entfernen
des Polysiliziums an den nicht von Photoresist bedeckten Stellen
durch Ätzen;
– Ausbildung
einer ersten Verdrahtungsschicht (50) nur auf dem zweiten Verunreinigungsbereich
(47) und auf dem an den zweiten...Method for producing a wiring for semiconductor components, characterized by the successive steps:
Setting an active region and a field region on a substrate (40) and forming a field insulating film (41) in the field region,
Forming a gate electrode (43) on the substrate (40) in the active region,
Forming first and second impurity regions (44, 47) in the substrate (40) in the active region on both sides of the gate electrode (43),
Forming insulating side walls (46) on the sides of the gate electrode (43),
Depositing a refractory metal (48) and a polysilicon layer (49) sequentially over the entire surface of the substrate (40),
Forming a patterned photoresist film on the polysilicon layer (49) by coating, exposing and developing;
Removing the polysilicon at the non-photoresist covered areas by etching;
- Forming a first wiring layer (50) only on the second impurity region (47) and on the second to the second ...
Description
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung einer Halbleitervorrichtung und insbesondere ein Verfahren zur Herstellung einer Verdrahtung für eine Halbleitervorrichtung die eine für hohe Packungsdichte geeignete Kontaktverdrahtung aufweist.The The present invention relates to a process for the preparation of a Semiconductor device, and more particularly to a method of manufacturing a wiring for a semiconductor device suitable for high packing density Contact wiring has.
Das Herstellen von Verdrahtungen für Halbleitervorrichtungen ist eng verknüpft mit den Verfahren zur Herstellung der Halbleiterelemente selbst, die als Vielzahl von Elementen mit entsprechender Verdrahtung die Halbleitervorrichtungen bilden.The Making wiring for Semiconductor devices are closely linked to the methods of manufacture of the semiconductor elements themselves, having as a plurality of elements with corresponding wiring forming the semiconductor devices.
Aus
der
Aus dem Artikel "A Low Parasitic Capacitance Scheme by Thermally Stable Titanium Silicide Technology for High Speed Complementary-Metal-Oxide-Semiconductor" veröffentlicht in Jpn. J. Appl. Phys. Vol. 33, Teil 1, No 1B, Januar 1994, Seiten 480 bis 485 ist ein Verfahren zur Herstellung einer erhabenen S/D MOSFET Struktur mit lokalen Titansilizid- Verbindungen bekannt.Out the article "A Low Parasitic Capacitance Scheme by Thermally Stable Titanium Silicide Technology for High Speed Complementary Metal Oxide Semiconductor " in Jpn. J. Appl. Phys. Vol. 33, Part 1, No 1B, January 1994, pages 480 to 485 is a method of making a raised S / D MOSFET Structure with local titanium silicide compounds known.
Schritte
zur Herstellung einer Verdrahtung eines Halbleiterbauteils sind
auch in der älteren
Anmeldung
Mit zunehmender hoher Packungsdichte, also mit dem Voranschreiten des hochdichten Packens von Einrichtungen, wurden viele Arten von DRAM-Zellenarrays und -strukturen vorgeschlagen, die für die hohe Packungsdichte vorteilhaft sind. Zum Beispiel wurde die CUB (Capacitor Under Bit Line; Kondensator unter der Bitleitung)-Struktur bis zur 16 M DRAM-Klasse angewendet, und die COB (Capacitor Over Bit Line; Kondensator über der Bitleitung)-Struktur wurde angewendet auf einen DRAM beginnend mit der 64 M Klasse und darüber. Da mit voranschreitende Packungsdichte die Größe des Chips bei verringerter Kontaktlochgröße und noch höheren Stufen reduziert wird, was zu einem größeren Aspektverhältnis (aspect ratio; Verhältnis von Höhe zu Breite ein Struktur) führt, wird ein neues Verfahren zum Ausbilden einer Verdrahtung erforderlich, das diese Probleme lösen kann.With Increasing high packing density, so with the progression of the high-density packaging of facilities, have been many types of DRAM cell arrays and structures proposed which are advantageous for the high packing density are. For example, the CUB (Capacitor Under Bit Line; under the bit line) structure up to the 16M DRAM class, and the COB (Capacitor Over Bit Line; Capacitor over the bit line) structure was applied to a DRAM starting with the 64 M class and about that. As the packing size progresses, the size of the chip decreases Contact hole size and even higher levels is reduced, resulting in a larger aspect ratio (aspect ratio; relationship of height to width a structure), For example, a new method of forming a wiring is required solve these problems can.
Wie
Wie
aus
Die Verdrahtung und das Verdrahtungsherstellungsverfahren für eine DRAM-Zelle mit CUB oder COB-Struktur haben jedoch die folgenden Probleme.The Wiring and the wiring manufacturing method for a DRAM cell however, having CUB or COB structure has the following problems.
Zunächst bewirkt der Kontakt der Verdrahtung mit dem Substrat das Problem einer Stress- oder Spannungserzeugung zwischen der Verdrahtung und dem Substrat bei der Ausbildung des Kontaktlochs bei hoher Packungsdichte insbesondere bei einem flachen Übergang.First, the contact of the wiring with the substrate causes the problem of stress or voltage generation between the wires tion and the substrate in the formation of the contact hole at high packing density, especially in a shallow transition.
Außerdem führt die
verringerte Ausrichtungstoleranz zwischen dem Kontaktloch und den Source/Drain-Verunreinigungsbereichen
infolge von Fehlausrichtungen vermehrt zu Kurzschlussproblemen zwischen
der Verdrahtung und den Gateelektroden oder zwischen der Verdrahtung
und dem Halbleitersubstrat. Ferner wird ein Aspektverhältnis des Kontaktlochs
für die
Bitleitungen
Dem entsprechend ist die Erfindung auf ein Verfahren zum Herstellen einer Verdrahtung gerichtet, das im Wesentlichen eins oder mehrere der Probleme infolge der Begrenzungen und Nachteile des Standes der Technik beseitigt.the Accordingly, the invention is a method for manufacturing a wiring that is essentially one or more the problems due to the limitations and disadvantages of the state the technique eliminated.
Die der Erfindung zugrunde liegende Aufgabe wird durch das Verfahren nach Anspruch 1 gelöst.The The object underlying the invention is achieved by the method solved according to claim 1.
Erfindungsgemäß ist also auf dem Source/Drain-Bereich eine leitende Schicht, vorzugsweise eine Silizidschicht vorgesehen, die sich bis zum Feldoxidfilm erstreckt und mit diesem überlappt, während Kontaktloch in einem die leitende Schicht bedeckenden Isolierfilm, z. B. einem Zwischenisolierfilm, so angeordnet ist, dass es oberhalb des Feldoxidfilms liegt. Auf diese Weise lässt sich die elektrische Verbindung zwischen einer zweiten Verdrahtungsschicht oder -leitung und dem Source/Drain-Bereich zuverlässiger herstellen, da das Aspektverhältnis des Kontaktloch verglichen mit dem Aspektverhältnis eines Kontaktlochs unmittelbar über dem Source/Drain-Bereich verringert ist.According to the invention is thus on the source / drain region, a conductive layer, preferably a silicide layer is provided which extends to the field oxide film and overlaps with this, while contact hole in an insulating film covering the conductive layer, e.g. B. one Interlayer insulating film is disposed so as to be above the field oxide film lies. That way the electrical connection between a second wiring layer or line and the source / drain region more reliably, because the aspect ratio of the contact hole compared with the aspect ratio of a contact hole immediately above the source / drain region is reduced.
Die Erfindung wird im Folgenden beispielsweise anhand der Zeichnung näher erläutert. Es zeigen:The Invention will be described below, for example, with reference to the drawing explained in more detail. It demonstrate:
Wie
Entsprechend
Entsprechend
Wie
Entsprechend
Entsprechend
Entsprechend
Der
CVD-Oxidfilm
Entsprechend
Die derart hergestellte Verdrahtung für eine DRAM-Zelle und das Verfahren zum Bilden der Verdrahtung für die DRAM-Zelle haben die folgenden Vorteile.The thus prepared wiring for a DRAM cell and the method to make the wiring for The DRAM cell has the following advantages.
Zunächst löst die Ausbildung einer Verdrahtung in Kontakt mit der Silizidschicht, die auf einem Teil des isolierenden Oxidfilms ausgebildet ist, das Problem des Auftretens von Streß oder Spannungen zwischen der Verdrahtung und dem Substrat, das bei einem flachen Übergang oder einen flachen Verbindung auftreten kann.First, the training triggers a wiring in contact with the silicide layer, on one part is formed of the insulating oxide film, the problem of occurrence from stress or Tensions between the wiring and the substrate, at a shallow transition or a shallow connection can occur.
Desweiteren kann die Ausbildung der Kontaktverdrahtungsschicht auf den Source/Drain-Bereichen und der Silizidschicht auf dem isolierenden Oxidfilm die Probleme der Stufenabdeckung und Kurzschlüsse zwischen der Verdrahtung und dem Substrat oder der Verdrahtung und der Gateelektrode bei Fehlausrichtung lösen und auch einen Kontaktwiderstand verbessern.Furthermore, the formation of the contact wiring layer on the source / drain regions and the silicide layer on the insulating oxide film may solve the problems of step coverage and short circuits between the wiring and the substrate or the wiring and the gate electrode in misalignment, and may also cause a con improve tactile resistance.
Claims (13)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR42480/96 | 1996-09-25 | ||
KR1019960042480A KR100198666B1 (en) | 1996-09-25 | 1996-09-25 | Manufacturing method of wiring structure in semiconductor device |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19742120A1 DE19742120A1 (en) | 1998-04-02 |
DE19742120B4 true DE19742120B4 (en) | 2005-12-22 |
Family
ID=19475335
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19742120A Expired - Fee Related DE19742120B4 (en) | 1996-09-25 | 1997-09-24 | Method for producing a wiring for a semiconductor device |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPH10107143A (en) |
KR (1) | KR100198666B1 (en) |
DE (1) | DE19742120B4 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103922248A (en) * | 2014-04-15 | 2014-07-16 | 湖州吴兴灵动机电设备制造厂 | Forklift frame convenient to load and unload |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63299377A (en) * | 1987-05-29 | 1988-12-06 | Matsushita Electric Ind Co Ltd | Manufacture of semiconductor device |
DE19724472A1 (en) * | 1996-09-07 | 1998-03-12 | Lg Semicon Co Ltd | Wiring layout for semiconductor component, e.g. bit-line of DRAM |
-
1996
- 1996-09-25 KR KR1019960042480A patent/KR100198666B1/en not_active IP Right Cessation
-
1997
- 1997-08-27 JP JP9230767A patent/JPH10107143A/en active Pending
- 1997-09-24 DE DE19742120A patent/DE19742120B4/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63299377A (en) * | 1987-05-29 | 1988-12-06 | Matsushita Electric Ind Co Ltd | Manufacture of semiconductor device |
DE19724472A1 (en) * | 1996-09-07 | 1998-03-12 | Lg Semicon Co Ltd | Wiring layout for semiconductor component, e.g. bit-line of DRAM |
Non-Patent Citations (3)
Title |
---|
in: Jpn.J.Appl.Phys., Vol. 33, Part 1, No. 1B, 1994, S. 480-485 * |
YOSHIDA, T. et al.: A Low Parasitic Capacitance Scheme by Thermally Stable Titanium Silicide Technology for High Speed Conplementary-Metal- Oxide-Semiconductor * |
YOSHIDA, T. et al.: A Low Parasitic Capacitance Scheme by Thermally Stable Titanium Silicide Technology for High Speed Conplementary-Metal- Oxide-Semiconductor; in: Jpn.J.Appl.Phys., Vol. 33, Part 1, No. 1B, 1994, S. 480-485 |
Also Published As
Publication number | Publication date |
---|---|
KR100198666B1 (en) | 1999-06-15 |
KR19980023066A (en) | 1998-07-06 |
JPH10107143A (en) | 1998-04-24 |
DE19742120A1 (en) | 1998-04-02 |
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---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8125 | Change of the main classification |
Ipc: H01L 21/768 |
|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |