EP1252358A1 - System und verfahren zum abscheiden von inorganischen/organischen dielektrischen filmen - Google Patents

System und verfahren zum abscheiden von inorganischen/organischen dielektrischen filmen

Info

Publication number
EP1252358A1
EP1252358A1 EP00980511A EP00980511A EP1252358A1 EP 1252358 A1 EP1252358 A1 EP 1252358A1 EP 00980511 A EP00980511 A EP 00980511A EP 00980511 A EP00980511 A EP 00980511A EP 1252358 A1 EP1252358 A1 EP 1252358A1
Authority
EP
European Patent Office
Prior art keywords
gases
processing chamber
plasma
substrate
plasma zone
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Withdrawn
Application number
EP00980511A
Other languages
English (en)
French (fr)
Other versions
EP1252358A4 (de
Inventor
John Felts
Eugene S. Lopata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nano Scale Surface Systems Inc
ASML US Inc
Original Assignee
Nano Scale Surface Systems Inc
ASML US Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nano Scale Surface Systems Inc, ASML US Inc filed Critical Nano Scale Surface Systems Inc
Publication of EP1252358A1 publication Critical patent/EP1252358A1/de
Publication of EP1252358A4 publication Critical patent/EP1252358A4/de
Withdrawn legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C16/00Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C16/00Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
    • C23C16/44Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
    • C23C16/448Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for generating reactive gas streams, e.g. by evaporation or sublimation of precursor materials
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C16/00Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
    • C23C16/22Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
    • C23C16/30Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
    • C23C16/40Oxides
    • C23C16/401Oxides containing silicon
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C16/00Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
    • C23C16/22Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
    • C23C16/30Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
    • C23C16/40Oxides
    • C23C16/401Oxides containing silicon
    • C23C16/402Silicon dioxide
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C16/00Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
    • C23C16/44Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
    • C23C16/50Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges
    • C23C16/505Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges using radio frequency discharges
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/32Gas-filled discharge tubes
    • H01J37/32009Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
    • H01J37/32082Radio frequency generated discharge
    • H01J37/321Radio frequency generated discharge the radio frequency energy being inductively coupled to the plasma
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/32Gas-filled discharge tubes
    • H01J37/32431Constructional details of the reactor
    • H01J37/32532Electrodes
    • H01J37/32596Hollow cathodes
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/02104Forming layers
    • H01L21/02107Forming insulating materials on a substrate
    • H01L21/02109Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
    • H01L21/02112Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
    • H01L21/02123Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon
    • H01L21/02126Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon the material containing Si, O, and at least one of H, N, C, F, or other non-metal elements, e.g. SiOC, SiOC:H or SiONC
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/02104Forming layers
    • H01L21/02107Forming insulating materials on a substrate
    • H01L21/02109Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
    • H01L21/02205Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates the layer being characterised by the precursor material for deposition
    • H01L21/02208Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates the layer being characterised by the precursor material for deposition the precursor containing a compound comprising Si
    • H01L21/02214Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates the layer being characterised by the precursor material for deposition the precursor containing a compound comprising Si the compound comprising silicon and oxygen
    • H01L21/02216Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates the layer being characterised by the precursor material for deposition the precursor containing a compound comprising Si the compound comprising silicon and oxygen the compound being a molecule comprising at least one silicon-oxygen bond and the compound having hydrogen or an organic group attached to the silicon or oxygen, e.g. a siloxane
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/02104Forming layers
    • H01L21/02107Forming insulating materials on a substrate
    • H01L21/02225Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer
    • H01L21/0226Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process
    • H01L21/02263Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase
    • H01L21/02271Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition
    • H01L21/02274Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition in the presence of a plasma [PECVD]
EP00980511A 1999-11-19 2000-11-17 System und verfahren zum abscheiden von inorganischen/organischen dielektrischen filmen Withdrawn EP1252358A4 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US16666299P 1999-11-19 1999-11-19
US166662P 1999-11-19
PCT/US2000/031694 WO2001036703A1 (en) 1999-11-19 2000-11-17 System and method for depositing inorganic/organic dielectric films

Publications (2)

Publication Number Publication Date
EP1252358A1 true EP1252358A1 (de) 2002-10-30
EP1252358A4 EP1252358A4 (de) 2008-02-13

Family

ID=22604213

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00980511A Withdrawn EP1252358A4 (de) 1999-11-19 2000-11-17 System und verfahren zum abscheiden von inorganischen/organischen dielektrischen filmen

Country Status (7)

Country Link
EP (1) EP1252358A4 (de)
JP (1) JP2003530481A (de)
KR (1) KR20020070436A (de)
CN (1) CN1460130A (de)
AU (1) AU1776401A (de)
TW (1) TWI232243B (de)
WO (1) WO2001036703A1 (de)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1019781C2 (nl) 2002-01-18 2003-07-21 Tno Deklaag alsmede werkwijzen en inrichtingen voor de vervaardiging daarvan.
US7425350B2 (en) 2005-04-29 2008-09-16 Asm Japan K.K. Apparatus, precursors and deposition methods for silicon-containing materials
US9111729B2 (en) 2009-12-03 2015-08-18 Lam Research Corporation Small plasma chamber systems and methods
US9190289B2 (en) 2010-02-26 2015-11-17 Lam Research Corporation System, method and apparatus for plasma etch having independent control of ion generation and dissociation of process gas
US9449793B2 (en) 2010-08-06 2016-09-20 Lam Research Corporation Systems, methods and apparatus for choked flow element extraction
US9155181B2 (en) 2010-08-06 2015-10-06 Lam Research Corporation Distributed multi-zone plasma source systems, methods and apparatus
US8999104B2 (en) 2010-08-06 2015-04-07 Lam Research Corporation Systems, methods and apparatus for separate plasma source control
US9967965B2 (en) 2010-08-06 2018-05-08 Lam Research Corporation Distributed, concentric multi-zone plasma source systems, methods and apparatus
US9177762B2 (en) 2011-11-16 2015-11-03 Lam Research Corporation System, method and apparatus of a wedge-shaped parallel plate plasma reactor for substrate processing
US10283325B2 (en) 2012-10-10 2019-05-07 Lam Research Corporation Distributed multi-zone plasma source systems, methods and apparatus
US8872525B2 (en) 2011-11-21 2014-10-28 Lam Research Corporation System, method and apparatus for detecting DC bias in a plasma processing chamber
US9083182B2 (en) 2011-11-21 2015-07-14 Lam Research Corporation Bypass capacitors for high voltage bias power in the mid frequency RF range
US9263240B2 (en) 2011-11-22 2016-02-16 Lam Research Corporation Dual zone temperature control of upper electrodes
US10586686B2 (en) 2011-11-22 2020-03-10 Law Research Corporation Peripheral RF feed and symmetric RF return for symmetric RF delivery
US8898889B2 (en) 2011-11-22 2014-12-02 Lam Research Corporation Chuck assembly for plasma processing
US9396908B2 (en) 2011-11-22 2016-07-19 Lam Research Corporation Systems and methods for controlling a plasma edge region
CN104011838B (zh) 2011-11-24 2016-10-05 朗姆研究公司 具有柔性对称的rf返回带的等离子体处理室
US9240308B2 (en) * 2014-03-06 2016-01-19 Applied Materials, Inc. Hall effect enhanced capacitively coupled plasma source, an abatement system, and vacuum processing system
US11631567B2 (en) 2020-03-12 2023-04-18 Applied Materials, Inc. Ion source with single-slot tubular cathode
US11127557B1 (en) * 2020-03-12 2021-09-21 Applied Materials, Inc. Ion source with single-slot tubular cathode
CN112696328B (zh) * 2020-12-11 2021-10-22 中国电子科技集团公司第十二研究所 一种高可靠性电推进用空心阴极结构

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0947603A2 (de) * 1998-04-02 1999-10-06 Nissin Electric Co., Ltd. Verfahren und Vorrichtung zur Filmabscheidung
WO1999055526A1 (en) * 1998-04-28 1999-11-04 Silicon Valley Group Thermal Systems, Llc LOW λ DIELECTRIC INORGANIC/ORGANIC HYBRID FILMS AND METHOD OF MAKING

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE58904540D1 (de) * 1988-03-24 1993-07-08 Siemens Ag Verfahren und vorrichtung zum herstellen von aus amorphen silizium-germanium-legierungen bestehenden halbleiterschichten nach der glimmentladungstechnik, insbesondere fuer solarzellen.
US5273609A (en) * 1990-09-12 1993-12-28 Texas Instruments Incorporated Method and apparatus for time-division plasma chopping in a multi-channel plasma processing equipment
US5292370A (en) * 1992-08-14 1994-03-08 Martin Marietta Energy Systems, Inc. Coupled microwave ECR and radio-frequency plasma source for plasma processing
US5695597A (en) * 1992-11-11 1997-12-09 Mitsubishi Denki Kabushiki Kaisha Plasma reaction apparatus
NO302060B1 (no) * 1995-05-02 1998-01-12 Nkt Res Center As Fremgangsmåte og elektrodesystem for eksitering av et plasma
JP3122601B2 (ja) * 1995-06-15 2001-01-09 東京エレクトロン株式会社 プラズマ成膜方法及びその装置
US6015595A (en) * 1998-05-28 2000-01-18 Felts; John T. Multiple source deposition plasma apparatus
US6176198B1 (en) * 1998-11-02 2001-01-23 Applied Materials, Inc. Apparatus and method for depositing low K dielectric materials

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0947603A2 (de) * 1998-04-02 1999-10-06 Nissin Electric Co., Ltd. Verfahren und Vorrichtung zur Filmabscheidung
WO1999055526A1 (en) * 1998-04-28 1999-11-04 Silicon Valley Group Thermal Systems, Llc LOW λ DIELECTRIC INORGANIC/ORGANIC HYBRID FILMS AND METHOD OF MAKING

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
See also references of WO0136703A1 *
SONG Y ET AL: "OPTICAL AND STRUCTURAL PROPERTIES OF LOW-TEMPERATURE PECVD ETMS SIOX THIN FILMS" THIN SOLID FILMS, ELSEVIER-SEQUOIA S.A. LAUSANNE, CH, vol. 334, no. 1/2, 4 December 1998 (1998-12-04), pages 92-97, XP000669262 ISSN: 0040-6090 *

Also Published As

Publication number Publication date
TWI232243B (en) 2005-05-11
EP1252358A4 (de) 2008-02-13
JP2003530481A (ja) 2003-10-14
WO2001036703A1 (en) 2001-05-25
AU1776401A (en) 2001-05-30
KR20020070436A (ko) 2002-09-09
CN1460130A (zh) 2003-12-03

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