DE19850838A1 - Verfahren zum Verbessern der Ätzgleichförmigkeit während eines Naßätzens - Google Patents
Verfahren zum Verbessern der Ätzgleichförmigkeit während eines NaßätzensInfo
- Publication number
- DE19850838A1 DE19850838A1 DE19850838A DE19850838A DE19850838A1 DE 19850838 A1 DE19850838 A1 DE 19850838A1 DE 19850838 A DE19850838 A DE 19850838A DE 19850838 A DE19850838 A DE 19850838A DE 19850838 A1 DE19850838 A1 DE 19850838A1
- Authority
- DE
- Germany
- Prior art keywords
- layer
- etching
- wafer
- glass
- wet etching
- 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.)
- Granted
Links
- 238000005530 etching Methods 0.000 title claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 238000001039 wet etching Methods 0.000 title claims abstract description 20
- 239000004065 semiconductor Substances 0.000 title claims abstract description 15
- 239000002253 acid Substances 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 43
- 239000005388 borosilicate glass Substances 0.000 claims abstract description 10
- 239000005380 borophosphosilicate glass Substances 0.000 claims abstract description 6
- 239000008367 deionised water Substances 0.000 claims abstract description 6
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 6
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 6
- 239000010703 silicon Substances 0.000 claims abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052802 copper Inorganic materials 0.000 claims abstract description 3
- 239000010949 copper Substances 0.000 claims abstract description 3
- 239000011521 glass Substances 0.000 claims abstract description 3
- 229910052814 silicon oxide Inorganic materials 0.000 claims abstract description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 14
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 2
- 229910017604 nitric acid Inorganic materials 0.000 claims description 2
- 229910052698 phosphorus Inorganic materials 0.000 claims description 2
- 239000011574 phosphorus Substances 0.000 claims description 2
- 239000005368 silicate glass Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 108090000623 proteins and genes Proteins 0.000 claims 1
- 229910052581 Si3N4 Inorganic materials 0.000 abstract description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 abstract description 3
- 239000005360 phosphosilicate glass Substances 0.000 abstract 2
- 235000011054 acetic acid Nutrition 0.000 abstract 1
- 150000001243 acetic acids Chemical class 0.000 abstract 1
- 235000011007 phosphoric acid Nutrition 0.000 abstract 1
- 150000003016 phosphoric acids Chemical class 0.000 abstract 1
- 235000012431 wafers Nutrition 0.000 description 24
- 239000010410 layer Substances 0.000 description 10
- 239000007921 spray Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003518 caustics Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 206010001497 Agitation Diseases 0.000 description 1
- GDXWHFPKFUYWBE-UHFFFAOYSA-N [F].Cl Chemical compound [F].Cl GDXWHFPKFUYWBE-UHFFFAOYSA-N 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 210000002381 plasma Anatomy 0.000 description 1
- 238000001020 plasma etching Methods 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000012546 transfer Methods 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
- H01L21/02—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
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3105—After-treatment
- H01L21/311—Etching the insulating layers by chemical or physical means
- H01L21/31105—Etching inorganic layers
- H01L21/31111—Etching inorganic layers by chemical means
-
- 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
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3205—Deposition of non-insulating-, e.g. conductive- or resistive-, layers on insulating layers; After-treatment of these layers
- H01L21/321—After treatment
- H01L21/3213—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer
- H01L21/32133—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only
- H01L21/32134—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only by liquid etching only
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- General Chemical & Material Sciences (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Inorganic Chemistry (AREA)
- Weting (AREA)
Abstract
Description
Claims (12)
Vorsehen eines Halbleiterwafers, der eine darauf ausgebildete Schicht aufweist; und
Ausbilden eines Wasserfilms über der Waferoberfläche vor dem Ätzen der Schicht mit einer Säurelösung.
- a) Drehen eines Halbleiterwafers, der eine darauf ausgebildete Schicht aufweist, mit einer ersten Geschwindigkeit;
- b) Zuführen von deionisiertem Wasser zu dem Wafer zur Ausbil dung eines Wasserfilms über der Waferoberfläche; und
- c) Zuführen einer Säurelösung zu dem Wafer zum Ätzen der Schicht, bevor die Wasserschicht getrocknet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW087115022A TW380284B (en) | 1998-09-09 | 1998-09-09 | Method for improving etching uniformity during a wet etching process |
AT0197098A AT409806B (de) | 1998-09-09 | 1998-11-24 | Verfahren zum verbessern der ätzgleichförmigkeit während eines nassätzens |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19850838A1 true DE19850838A1 (de) | 2000-03-23 |
DE19850838C2 DE19850838C2 (de) | 2002-10-24 |
Family
ID=25597308
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19850838A Expired - Lifetime DE19850838C2 (de) | 1998-09-09 | 1998-11-04 | Verfahren zum Verbessern der Ätzgleichförmigkeit während eines Naßätzens und Naßätzverfahren |
Country Status (4)
Country | Link |
---|---|
US (1) | US6123865A (de) |
AT (1) | AT409806B (de) |
DE (1) | DE19850838C2 (de) |
TW (1) | TW380284B (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001024244A1 (en) * | 1999-09-24 | 2001-04-05 | Infineon Technologies North America Corp. | High etch selectivity etchant for doped silicate glass |
EP3229262A1 (de) | 2016-04-05 | 2017-10-11 | Siltronic AG | Verfahren zur dampfphasenätzung einer halbleiterscheibe zur spurenmetallanalyse |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7402467B1 (en) | 1999-03-26 | 2008-07-22 | Semiconductor Energy Laboratory Co., Ltd. | Method of manufacturing a semiconductor device |
JP2001033938A (ja) * | 1999-07-22 | 2001-02-09 | Oki Electric Ind Co Ltd | ハーフトーン位相シフトマスクの特性補正方法 |
US6307240B1 (en) | 2000-12-22 | 2001-10-23 | Visteon Global Technologies, Inc. | Pulsed etching manufacturing method and system |
US6893578B1 (en) * | 2001-12-05 | 2005-05-17 | Sandia Corporation | Selective etchant for oxide sacrificial material in semiconductor device fabrication |
US6787056B2 (en) * | 2002-02-07 | 2004-09-07 | Macronix International Co., Ltd. | Planarization method using anisotropic wet etching |
KR100466297B1 (ko) * | 2002-10-17 | 2005-01-13 | 한국디엔에스 주식회사 | 반도체 제조 장치 |
JP2005057263A (ja) * | 2003-07-31 | 2005-03-03 | Samsung Electronics Co Ltd | 半導体素子を製造するためのエッチング方法 |
EP1575089B1 (de) * | 2004-03-09 | 2007-11-14 | Infineon Technologies AG | Hochzuverlässige, kostengünstige und thermisch verbesserte Halbleiterchip-Befestigungstechnologie mit AuSn |
JP4393260B2 (ja) * | 2004-04-20 | 2010-01-06 | 株式会社東芝 | エッチング液管理方法 |
TWI283442B (en) * | 2004-09-09 | 2007-07-01 | Sez Ag | Method for selective etching |
JP5122731B2 (ja) * | 2005-06-01 | 2013-01-16 | 信越半導体株式会社 | 貼り合わせウェーハの製造方法 |
KR20090038972A (ko) * | 2007-10-17 | 2009-04-22 | 삼성전자주식회사 | 콘택홀 형성방법 및 그를 이용한 반도체 메모리소자의제조방법 |
US8153523B2 (en) * | 2008-09-12 | 2012-04-10 | Taiwan Semiconductor Manufacturing Company, Ltd. | Method of etching a layer of a semiconductor device using an etchant layer |
CN110189995A (zh) | 2010-12-10 | 2019-08-30 | 东京毅力科创Fsi公司 | 用于从衬底选择性地移除氮化物的方法 |
US8894877B2 (en) * | 2011-10-19 | 2014-11-25 | Lam Research Ag | Method, apparatus and composition for wet etching |
US9017568B2 (en) | 2013-01-22 | 2015-04-28 | Tel Fsi, Inc. | Process for increasing the hydrophilicity of silicon surfaces following HF treatment |
US9698062B2 (en) * | 2013-02-28 | 2017-07-04 | Veeco Precision Surface Processing Llc | System and method for performing a wet etching process |
US10269591B2 (en) * | 2013-10-23 | 2019-04-23 | Taiwan Semiconductor Manufacturing Co., Ltd. | Method of selectively removing silicon nitride and single wafer etching apparatus thereof |
US9562291B2 (en) | 2014-01-14 | 2017-02-07 | Mei, Llc | Metal etch system |
US9870928B2 (en) | 2014-10-31 | 2018-01-16 | Veeco Precision Surface Processing Llc | System and method for updating an arm scan profile through a graphical user interface |
WO2016070036A1 (en) | 2014-10-31 | 2016-05-06 | Veeco Precision Surface Processing Llc | A system and method for performing a wet etching process |
TWI738757B (zh) | 2016-04-05 | 2021-09-11 | 美商維克儀器公司 | 經由化學的適應性峰化來控制蝕刻速率的裝置和方法 |
WO2018160461A1 (en) | 2017-03-03 | 2018-09-07 | Veeco Precision Surface Processing Llc | An apparatus and method for wafer thinning in advanced packaging applications |
CN109780293A (zh) * | 2018-12-29 | 2019-05-21 | 江苏日托光伏科技股份有限公司 | 一种具有防呆功能的水膜滴液装置 |
US11282739B2 (en) | 2019-12-13 | 2022-03-22 | Globalwafers Co., Ltd. | Methods for removing an oxide film from a SOI structure and methods for preparing a SOI structure |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0444714A1 (de) * | 1987-11-09 | 1991-09-04 | SEZ Semiconductor-Equipment Zubehör für die Halbleiterfertigung Gesellschaft m.b.H. | Vorrichtung zum Behandeln scheibenförmiger Gegenstände |
US5078832A (en) * | 1989-05-06 | 1992-01-07 | Dainippon Screen Mfg. Co., Ltd. | Method of treating wafer surface |
JPH0476918A (ja) * | 1990-07-18 | 1992-03-11 | Victor Co Of Japan Ltd | ウェハ表面のエピタキシャル成長層のエッチング方法 |
US5633111A (en) * | 1991-11-01 | 1997-05-27 | Fuji Photo Film Co., Ltd. | Photoresist composition and article containing 1,2-quinonediazide and an organic phosphorous acid compound |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
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US3630804A (en) * | 1968-08-19 | 1971-12-28 | Chemcut Corp | Etching apparatus |
US3813311A (en) * | 1973-01-24 | 1974-05-28 | Gen Motors Corp | Process for etching silicon wafers |
DE3027934A1 (de) * | 1980-07-23 | 1982-02-25 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zur einseitigen aetzung von halbleiterscheiben |
JPS62150350A (ja) * | 1985-12-25 | 1987-07-04 | Hoya Corp | パタ−ン形成方法 |
DE3611387A1 (de) * | 1986-04-04 | 1987-10-15 | Semax Gmbh Prozesstechnik | Anlage und verfahren zur herstellung von integrierten schaltkreisen od. dgl. aus si- oder aus gaas-scheiben od. dgl. |
JPS63237527A (ja) * | 1987-03-26 | 1988-10-04 | Hoya Corp | レジスト剥離方法 |
US5181985A (en) * | 1988-06-01 | 1993-01-26 | Wacker-Chemitronic Gesellschaft Fur Elektronik-Grundstoffe Mbh | Process for the wet-chemical surface treatment of semiconductor wafers |
JP2528962B2 (ja) * | 1989-02-27 | 1996-08-28 | 株式会社日立製作所 | 試料処理方法及び装置 |
EP0408216A3 (en) * | 1989-07-11 | 1991-09-18 | Hitachi, Ltd. | Method for processing wafers and producing semiconductor devices and apparatus for producing the same |
US5279704A (en) * | 1991-04-23 | 1994-01-18 | Honda Giken Kogyo Kabushiki Kaisha | Method of fabricating semiconductor device |
US5488964A (en) * | 1991-05-08 | 1996-02-06 | Tokyo Electron Limited | Washing apparatus, and washing method |
US5275695A (en) * | 1992-12-18 | 1994-01-04 | International Business Machines Corporation | Process for generating beveled edges |
JP3341033B2 (ja) * | 1993-06-22 | 2002-11-05 | 忠弘 大見 | 回転薬液洗浄方法及び洗浄装置 |
JPH07142438A (ja) * | 1993-11-22 | 1995-06-02 | Tadahiro Omi | 洗浄装置、半導体製造装置及び半導体製造ライン |
US5620611A (en) * | 1996-06-06 | 1997-04-15 | International Business Machines Corporation | Method to improve uniformity and reduce excess undercuts during chemical etching in the manufacture of solder pads |
JPH1071375A (ja) * | 1996-07-05 | 1998-03-17 | Toshiba Corp | 洗浄方法 |
-
1998
- 1998-09-09 TW TW087115022A patent/TW380284B/zh not_active IP Right Cessation
- 1998-11-04 DE DE19850838A patent/DE19850838C2/de not_active Expired - Lifetime
- 1998-11-24 AT AT0197098A patent/AT409806B/de not_active IP Right Cessation
- 1998-12-07 US US09/206,642 patent/US6123865A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0444714A1 (de) * | 1987-11-09 | 1991-09-04 | SEZ Semiconductor-Equipment Zubehör für die Halbleiterfertigung Gesellschaft m.b.H. | Vorrichtung zum Behandeln scheibenförmiger Gegenstände |
US5078832A (en) * | 1989-05-06 | 1992-01-07 | Dainippon Screen Mfg. Co., Ltd. | Method of treating wafer surface |
JPH0476918A (ja) * | 1990-07-18 | 1992-03-11 | Victor Co Of Japan Ltd | ウェハ表面のエピタキシャル成長層のエッチング方法 |
US5633111A (en) * | 1991-11-01 | 1997-05-27 | Fuji Photo Film Co., Ltd. | Photoresist composition and article containing 1,2-quinonediazide and an organic phosphorous acid compound |
Non-Patent Citations (1)
Title |
---|
JP 61-105847 A, In: Patent Abstracts of Japan * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001024244A1 (en) * | 1999-09-24 | 2001-04-05 | Infineon Technologies North America Corp. | High etch selectivity etchant for doped silicate glass |
EP3229262A1 (de) | 2016-04-05 | 2017-10-11 | Siltronic AG | Verfahren zur dampfphasenätzung einer halbleiterscheibe zur spurenmetallanalyse |
WO2017174371A1 (en) | 2016-04-05 | 2017-10-12 | Siltronic Ag | Method for the vapour phase etching of a semiconductor wafer for trace metal analysis |
US10861704B2 (en) | 2016-04-05 | 2020-12-08 | Siltronic Ag | Method for the vapour phase etching of a semiconductor wafer for trace metal analysis |
Also Published As
Publication number | Publication date |
---|---|
ATA197098A (de) | 2002-03-15 |
AT409806B (de) | 2002-11-25 |
US6123865A (en) | 2000-09-26 |
DE19850838C2 (de) | 2002-10-24 |
TW380284B (en) | 2000-01-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: PROMOS TECHNOLOGIES, INC., HSINCHU, TW Owner name: QIMONDA AG, 81739 MUENCHEN, DE Owner name: MOSEL VITELIC INC., HSINCHU, TW |
|
R409 | Internal rectification of the legal status completed | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20110531 |
|
R074 | Re-establishment allowed | ||
R409 | Internal rectification of the legal status completed | ||
R081 | Change of applicant/patentee |
Owner name: PROMOS TECHNOLOGIES, INC., TW Free format text: FORMER OWNER: MOSEL VITELIC INC., PROMOS TECHNOLOGIES, INC., QIMONDA AG, , TW Owner name: MOSEL VITELIC INC., TW Free format text: FORMER OWNER: MOSEL VITELIC INC., PROMOS TECHNOLOGIES, INC., QIMONDA AG, , TW Owner name: INFINEON TECHNOLOGIES AG, DE Free format text: FORMER OWNER: MOSEL VITELIC INC., PROMOS TECHNOLOGIES, INC., QIMONDA AG, , TW Owner name: PROMOS TECHNOLOGIES, INC., TW Free format text: FORMER OWNERS: MOSEL VITELIC INC., HSINCHU, TW; PROMOS TECHNOLOGIES, INC., HSINCHU, TW; QIMONDA AG, 81739 MUENCHEN, DE Owner name: MOSEL VITELIC INC., TW Free format text: FORMER OWNERS: MOSEL VITELIC INC., HSINCHU, TW; PROMOS TECHNOLOGIES, INC., HSINCHU, TW; QIMONDA AG, 81739 MUENCHEN, DE Owner name: INFINEON TECHNOLOGIES AG, DE Free format text: FORMER OWNERS: MOSEL VITELIC INC., HSINCHU, TW; PROMOS TECHNOLOGIES, INC., HSINCHU, TW; QIMONDA AG, 81739 MUENCHEN, DE |
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R071 | Expiry of right |