KR19990029473A - 경질의 에칭 마스크 - Google Patents
경질의 에칭 마스크 Download PDFInfo
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- KR19990029473A KR19990029473A KR1019980036179A KR19980036179A KR19990029473A KR 19990029473 A KR19990029473 A KR 19990029473A KR 1019980036179 A KR1019980036179 A KR 1019980036179A KR 19980036179 A KR19980036179 A KR 19980036179A KR 19990029473 A KR19990029473 A KR 19990029473A
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- South Korea
- Prior art keywords
- layer
- pad
- psg
- pad stack
- substrate
- Prior art date
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- 238000005530 etching Methods 0.000 title claims description 13
- 239000000758 substrate Substances 0.000 claims abstract description 32
- 238000001020 plasma etching Methods 0.000 claims abstract description 23
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000011574 phosphorus Substances 0.000 claims abstract description 14
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims description 16
- 239000006117 anti-reflective coating Substances 0.000 claims description 13
- 238000000151 deposition Methods 0.000 claims description 11
- 230000004888 barrier function Effects 0.000 claims description 8
- 238000000059 patterning Methods 0.000 claims description 6
- 229910019142 PO4 Inorganic materials 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 4
- 239000010452 phosphate Substances 0.000 claims description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 4
- 239000010410 layer Substances 0.000 claims 35
- 239000005368 silicate glass Substances 0.000 abstract description 6
- 210000004027 cell Anatomy 0.000 description 19
- 150000004767 nitrides Chemical class 0.000 description 14
- 239000003990 capacitor Substances 0.000 description 13
- 239000002019 doping agent Substances 0.000 description 9
- 239000010409 thin film Substances 0.000 description 9
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 7
- 238000005229 chemical vapour deposition Methods 0.000 description 5
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 5
- 238000000137 annealing Methods 0.000 description 4
- 230000008021 deposition Effects 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- YWWDBCBWQNCYNR-UHFFFAOYSA-N trimethylphosphine Chemical compound CP(C)C YWWDBCBWQNCYNR-UHFFFAOYSA-N 0.000 description 4
- 206010001513 AIDS related complex Diseases 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 210000002945 adventitial reticular cell Anatomy 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920002120 photoresistant polymer Polymers 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 2
- 238000001039 wet etching Methods 0.000 description 2
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- 229910019001 CoSi Inorganic materials 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 229910016006 MoSi Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- UPSOBXZLFLJAKK-UHFFFAOYSA-N ozone;tetraethyl silicate Chemical compound [O-][O+]=O.CCO[Si](OCC)(OCC)OCC UPSOBXZLFLJAKK-UHFFFAOYSA-N 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Classifications
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- 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
- H01L21/027—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34
- H01L21/033—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising inorganic layers
- H01L21/0332—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising inorganic layers characterised by their composition, e.g. multilayer masks, materials
-
- 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
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/308—Chemical or electrical treatment, e.g. electrolytic etching using masks
- H01L21/3081—Chemical or electrical treatment, e.g. electrolytic etching using masks characterised by their composition, e.g. multilayer masks, materials
-
- 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
- H10B12/02—Manufacture or treatment for one transistor one-capacitor [1T-1C] memory cells
- H10B12/03—Making the capacitor or connections thereto
- H10B12/038—Making the capacitor or connections thereto the capacitor being in a trench in the substrate
- H10B12/0387—Making the trench
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)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Semiconductor Memories (AREA)
- Drying Of Semiconductors (AREA)
- Formation Of Insulating Films (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Abstract
Description
Claims (20)
- 기판을 에칭하기 위한 패드 스택에 있어서,PSG 경질의 마스크 층을 포함하며, 상기 PSG 경질의 마스크 층은 깊은 트랜치를 형성하기 위한 반응성 이온 에칭용 에칭 마스크로서 역할을 하는 것을 특징으로 하는 패드 스택.
- 제 1 항에 있어서, 상기 PSG 층은 3,000Å 내지 20,000Å의 두께로 형성되는 것을 특징으로 하는 패드 스택.
- 제 1 항에 있어서, 상기 PSG 층은 5,000Å 내지 9,000Å의 두께로 형성되는 것을 특징으로 하는 패드 스택.
- 제 1 항에 있어서, 상기 PSG 층은 패드 옥사이드 층을 가지는 기판 상에 형성되는 것을 특징으로 하는 패드 스택.
- 제 4 항에 있어서, 상기 PSG 층은 PSG 층이 상기 패드 옥사이드 층에 대해 선택적으로 에칭되도록 하는 인 농도를 가지는 것을 특징으로 하는 패드 스택.
- 제 4 항에 있어서, 상기 PSG층은 50 대 1 내지 500 대 1 사이의 비율로 상기 패드 옥사이드 층에 대해 선택적으로 에칭되는 것을 특징으로 하는 패드 스택.
- 제 1 항에 있어서, 상기 PSG층은 인산 결정을 형성하는 농도 이하의 인 농도를 가지는 것을 특징으로 하는 패드 스택.
- 제 1 항에 있어서, 상기 PSG 층은 1중량% 내지 11중량% 사이의 인 농도를 가지는 것을 특징으로 하는 패드 스택.
- 기판을 에칭하기 위한 패드 스택에 있어서,상기 기판 상에 형성된 패드 옥사이드 층;상기 패드 옥사이드 상에 형성된 패드 정지층; 및상기 패드 정지층 상부에 형성되어, 깊은 트랜치를 형성하기 위한 반응성 이온 에칭용 에칭 마스크를 제공하는 PSG 경질의 마스크 층을 포함하는 것을 특징으로 하는 패드 스택.
- 제 9 항에 있어서, 상기 PSG 층은 3,000Å 내지 20,000Å의 두께로 형성되는 것을 특징으로 하는 패드 스택.
- 제 9 항에 있어서, 상기 PSG 층은 5,000Å 내지 9,000Å의 두께로 형성되는 것을 특징으로 하는 패드 스택.
- 제 9 항에 있어서, 상기 PSG 층은 PSG 층이 상기 패드 옥사이드 층에 대해 선택적으로 에칭되도록 하는 농도이고 인산 결정을 형성하는 농도 이하의 인 농도를 가지는 것을 특징으로 하는 패드 스택.
- 제 12 항에 있어서, 상기 PSG 층은 50 대 1 내지 500 대 1 사이의 비율로 상기 패드 옥사이드 층에 대해 선택적으로 에칭되는 것을 특징으로 하는 패드 스택.
- 제 9 항에 있어서, 상기 PSG 층은 1중량% 내지 11중량% 사이의 인 농도를 가지는 것을 특징으로 하는 패드 스택.
- 기판내에 깊은 트랜치를 형성하기 위한 방법에 있어서,PSG 경질의 마스크 층을 가지는 패드 스택을 제공하는 단계;깊은 트랜치에 대한 위치를 식별하기 위해 상기 경질의 마스크 층을 패터닝하는 단계; 및상기 경질의 마스크 층이 반응성 이온 에칭용 에칭 마스크를 제공하는 상기 식별된 위치의 기판을 반응성 이온 에칭하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 15 항에 있어서, 상기 패터닝하는 단계는,상기 경질의 마스크 층 상에 레지스트를 형성하는 단계; 및깊은 트랜치에 대한 식별된 위치의 보호되지 않은 영역을 형성하기 위해 상기 레지스트를 현상하는 단계를 포함하는 것을 특징으로 하는 방법.
- 제 16 항에 있어서, 분해능을 향상시키기 위해 상기 레지스트를 형성하기에 앞서 상기 패드 스택상부에 반사 방지 코팅 층을 증착하는 단계를 더 포함하는 것을 특징으로 하는 방법.
- 제 17 항에 있어서, 상기 레지스트를 형성 및 상기 반사 방지 코팅층 증착에 앞서 상기 패드 스택상에 장벽층을 증착하는 단계를 더 포함하는 것을 특징으로 하는 방법.
- 제 18 항에 있어서, 상기 기판을 노출시키기 위해 상기 패드 스택을 반응성 이온 에칭하는 단계;상기 경질의 마스크를 노출시키는 단계; 및깊은 트랜치를 형성하기 위한 마스크로서 상기 경질의 마스크 층을 사용하여 상기 기판을 반응성 이온 에칭하는 단계를 더 포함하는 것을 특징으로 하는 방법.
- 제 15 항에 있어서, 상기 패드 스택은 패드 옥사이드 층을 더 포함하며, 상기 패드 옥사이드 층에 대한 선택적 에칭에 의해 상기 경질의 하드 마스크를 제거하는 단계를 포함하는 것을 특징으로 하는 방법.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/940,891 | 1997-09-30 | ||
US08/940,891 US6020091A (en) | 1997-09-30 | 1997-09-30 | Hard etch mask |
US8/940,891 | 1997-09-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR19990029473A true KR19990029473A (ko) | 1999-04-26 |
KR100562212B1 KR100562212B1 (ko) | 2006-05-25 |
Family
ID=25475593
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019980036179A Expired - Fee Related KR100562212B1 (ko) | 1997-09-30 | 1998-09-03 | 경질의에칭마스크 |
Country Status (6)
Country | Link |
---|---|
US (1) | US6020091A (ko) |
EP (1) | EP0908937A3 (ko) |
JP (1) | JPH11168201A (ko) |
KR (1) | KR100562212B1 (ko) |
CN (1) | CN1218274A (ko) |
TW (1) | TW388102B (ko) |
Families Citing this family (27)
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DE19844102C2 (de) * | 1998-09-25 | 2000-07-20 | Siemens Ag | Herstellverfahren für eine Halbleiterstruktur |
US6287951B1 (en) * | 1998-12-07 | 2001-09-11 | Motorola Inc. | Process for forming a combination hardmask and antireflective layer |
TW523802B (en) * | 1999-04-02 | 2003-03-11 | Mosel Vitelic Inc | Novel mask configuration of IC layout |
US6335292B1 (en) * | 1999-04-15 | 2002-01-01 | Micron Technology, Inc. | Method of controlling striations and CD loss in contact oxide etch |
US6342428B1 (en) * | 1999-10-04 | 2002-01-29 | Philips Electronics North America Corp. | Method for a consistent shallow trench etch profile |
DE19958904C2 (de) * | 1999-12-07 | 2002-01-24 | Infineon Technologies Ag | Verfahren zur Herstellung einer Hartmaske auf einem Substrat |
US6261967B1 (en) * | 2000-02-09 | 2001-07-17 | Infineon Technologies North America Corp. | Easy to remove hard mask layer for semiconductor device fabrication |
US6396121B1 (en) * | 2000-05-31 | 2002-05-28 | International Business Machines Corporation | Structures and methods of anti-fuse formation in SOI |
US6607984B1 (en) | 2000-06-20 | 2003-08-19 | International Business Machines Corporation | Removable inorganic anti-reflection coating process |
TW540154B (en) | 2001-06-04 | 2003-07-01 | Promos Technologies Inc | Deep trench capacitor structure and its manufacturing method |
DE102004004879B4 (de) * | 2004-01-30 | 2008-03-13 | Qimonda Ag | Maskierungsvorrichtung zur Maskierung beim Trockenätzen und Verfahren zum Maskieren beim Trockenätzen eines zu strukturierenden Substrats |
US20060261436A1 (en) * | 2005-05-19 | 2006-11-23 | Freescale Semiconductor, Inc. | Electronic device including a trench field isolation region and a process for forming the same |
US7371695B2 (en) * | 2006-01-04 | 2008-05-13 | Promos Technologies Pte. Ltd. | Use of TEOS oxides in integrated circuit fabrication processes |
US7560387B2 (en) * | 2006-01-25 | 2009-07-14 | International Business Machines Corporation | Opening hard mask and SOI substrate in single process chamber |
JP5028811B2 (ja) * | 2006-02-03 | 2012-09-19 | 住友電気工業株式会社 | 化合物半導体光デバイスを作製する方法 |
US7491604B2 (en) * | 2006-03-07 | 2009-02-17 | International Business Machines Corporation | Trench memory with monolithic conducting material and methods for forming same |
KR100744071B1 (ko) | 2006-03-31 | 2007-07-30 | 주식회사 하이닉스반도체 | 벌브형 리세스 게이트를 갖는 반도체 소자의 제조방법 |
US20070249127A1 (en) * | 2006-04-24 | 2007-10-25 | Freescale Semiconductor, Inc. | Electronic device including a semiconductor layer and a sidewall spacer and a process of forming the same |
US7670895B2 (en) | 2006-04-24 | 2010-03-02 | Freescale Semiconductor, Inc | Process of forming an electronic device including a semiconductor layer and another layer adjacent to an opening within the semiconductor layer |
US7491622B2 (en) * | 2006-04-24 | 2009-02-17 | Freescale Semiconductor, Inc. | Process of forming an electronic device including a layer formed using an inductively coupled plasma |
US7528078B2 (en) | 2006-05-12 | 2009-05-05 | Freescale Semiconductor, Inc. | Process of forming electronic device including a densified nitride layer adjacent to an opening within a semiconductor layer |
US7704849B2 (en) * | 2007-12-03 | 2010-04-27 | Micron Technology, Inc. | Methods of forming trench isolation in silicon of a semiconductor substrate by plasma |
US8133781B2 (en) * | 2010-02-15 | 2012-03-13 | International Business Machines Corporation | Method of forming a buried plate by ion implantation |
US8404583B2 (en) * | 2010-03-12 | 2013-03-26 | Applied Materials, Inc. | Conformality of oxide layers along sidewalls of deep vias |
US8563386B2 (en) | 2010-11-16 | 2013-10-22 | Globalfoundries Singapore Pte. Ltd. | Integrated circuit system with bandgap material and method of manufacture thereof |
CN102931143B (zh) * | 2011-08-10 | 2015-04-29 | 无锡华润上华科技有限公司 | NOR Flash器件制作方法 |
CN106811752B (zh) * | 2015-12-02 | 2019-10-25 | 中微半导体设备(上海)股份有限公司 | 形成双大马士革结构的方法、等离子体刻蚀方法 |
Family Cites Families (7)
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---|---|---|---|---|
JP2691153B2 (ja) * | 1988-11-22 | 1997-12-17 | 富士通株式会社 | 半導体装置の製造方法 |
JPH03167838A (ja) * | 1989-11-28 | 1991-07-19 | Fujitsu Ltd | 半導体装置及びその製造方法 |
US5112762A (en) * | 1990-12-05 | 1992-05-12 | Anderson Dirk N | High angle implant around top of trench to reduce gated diode leakage |
JPH0547936A (ja) * | 1991-08-20 | 1993-02-26 | Fujitsu Ltd | 半導体装置の製造方法 |
US5545588A (en) * | 1995-05-05 | 1996-08-13 | Taiwan Semiconductor Manufacturing Company | Method of using disposable hard mask for gate critical dimension control |
US5614431A (en) * | 1995-12-20 | 1997-03-25 | International Business Machines Corporation | Method of making buried strap trench cell yielding an extended transistor |
US5776808A (en) * | 1996-12-26 | 1998-07-07 | Siemens Aktiengesellschaft | Pad stack with a poly SI etch stop for TEOS mask removal with RIE |
-
1997
- 1997-09-30 US US08/940,891 patent/US6020091A/en not_active Expired - Lifetime
-
1998
- 1998-07-22 TW TW087111938A patent/TW388102B/zh not_active IP Right Cessation
- 1998-09-03 KR KR1019980036179A patent/KR100562212B1/ko not_active Expired - Fee Related
- 1998-09-09 EP EP98117016A patent/EP0908937A3/en not_active Withdrawn
- 1998-09-28 CN CN98120768A patent/CN1218274A/zh active Pending
- 1998-09-30 JP JP10277291A patent/JPH11168201A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
JPH11168201A (ja) | 1999-06-22 |
TW388102B (en) | 2000-04-21 |
EP0908937A2 (en) | 1999-04-14 |
CN1218274A (zh) | 1999-06-02 |
EP0908937A3 (en) | 2004-03-31 |
KR100562212B1 (ko) | 2006-05-25 |
US6020091A (en) | 2000-02-01 |
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