KR100471410B1 - 반도체소자의 비트라인 콘택 형성방법 - Google Patents
반도체소자의 비트라인 콘택 형성방법 Download PDFInfo
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- KR100471410B1 KR100471410B1 KR10-1998-0058627A KR19980058627A KR100471410B1 KR 100471410 B1 KR100471410 B1 KR 100471410B1 KR 19980058627 A KR19980058627 A KR 19980058627A KR 100471410 B1 KR100471410 B1 KR 100471410B1
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- forming
- bit line
- region
- nitride film
- etching
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- 238000000034 method Methods 0.000 title claims abstract description 44
- 239000004065 semiconductor Substances 0.000 title claims abstract description 24
- 230000015572 biosynthetic process Effects 0.000 title 1
- 150000004767 nitrides Chemical class 0.000 claims abstract description 54
- 230000002093 peripheral effect Effects 0.000 claims abstract description 35
- 239000000758 substrate Substances 0.000 claims abstract description 28
- 238000005530 etching Methods 0.000 claims abstract description 24
- 239000003990 capacitor Substances 0.000 claims abstract description 9
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 20
- 229920005591 polysilicon Polymers 0.000 claims description 20
- 230000004888 barrier function Effects 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 229920002120 photoresistant polymer Polymers 0.000 description 8
- 238000009413 insulation Methods 0.000 description 4
- -1 spacer nitride Chemical class 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- 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
- H10B12/30—DRAM devices comprising one-transistor - one-capacitor [1T-1C] memory cells
- H10B12/48—Data lines or contacts therefor
- H10B12/485—Bit line contacts
-
- 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
- H01L21/32115—Planarisation
- H01L21/3212—Planarisation by chemical mechanical polishing [CMP]
-
- 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
-
- 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
- H01L21/76801—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 dielectrics, e.g. smoothing
- H01L21/76802—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 dielectrics, e.g. smoothing by forming openings in 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
- H01L21/70—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
- H01L21/76801—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 dielectrics, e.g. smoothing
- H01L21/76819—Smoothing of the dielectric
-
- 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
- H01L21/7684—Smoothing; Planarisation
-
- 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
- H01L21/76877—Filling of holes, grooves or trenches, e.g. vias, with conductive material
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Semiconductor Memories (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Abstract
Description
Claims (10)
- 반도체기판상에 질화막 하드마스크를 이용하여 워드라인을 형성하는 단계와;상기 워드라인이 형성된 반도체기판상에 절연막을 형성하는 단계;상기 절연막을 선택적으로 식각하여 반도체기판의 셀영역의 소정부분에 비트라인 및 커패시터 콘택 플러그 형성을 위한 콘택홀을 형성하는 단계;상기 콘택홀내에 도전성 플러그를 형성하는 단계;기판 전면에 질화막을 형성하는 단계;셀영역 마스크를 이용하여 반도체기판 소정영역에 해당하는 주변회로영역에 형성된 상기 질화막을 선택적으로 제거하는 단계;기판 전면에 산화막을 형성하는 단계;셀영역과 주변회로영역의 비트라인 콘택이 형성될 영역에 해당하는 상기 산화막 부분을 식각하는 단계; 및상기 산화막의 식각에 의해 노출되는 상기 질화막 부분을 식각하여 셀영역과 주변회로의 비트라인 콘택을 동시에 형성하는 단계를 포함하는 반도체소자의 비트라인 콘택 형성방법.
- 제1항에 있어서,상기 워드라인을 질화막 하드마스크를 이용하여 형성하는 것을 특징으로 하는 반도체소자의 비트라인 콘택 형성방법.
- 제1항에 있어서,상기 도전성 플러그는 셀영역에 비트라인 및 커패시터 콘택 플러그 형성을 위한 콘택홀을 형성한 후, 기판 전면에 도핑된 폴리실리콘을 증착하고 에치백 또는 CMP에 의해 평탄화하여 상기 콘택홀내에 형성하는 것을 특징으로 하는 반도체소자의 비트라인 콘택 형성방법.
- 제1항에 있어서,상기 질화막을 형성하는 단계전에 기판 전면에 상기 질화막 식각시의 배리어 역할을 위해 산화막을 형성하는 단계가 더 포함되는 것을 특징으로 하는 반도체소자의 비트라인 콘택 형성방법.
- 제1항에 있어서,상기 질화막의 두께는 산화막과 질화막의 선택비, 그리고 하드마스크 질화막의 두께를 고려하여 결정하는 것을 특징으로 하는 반도체소자의 비트라인 콘택 형성방법.
- 제1항에 있어서,상기 비트라인 콘택은 상기 셀영역의 도전성플러그 상부와 주변영역의 활성영역 및 워드라인 상부에 형성하는 것을 특징으로 하는 반도체소자의 비트라인 콘택 형성방법.
- 제1항에 있어서,상기 산화막은 질화막에 대해 높은 선택비를 갖는 조건으로 식각하는 것을 특징으로 하는 반도체소자의 비트라인 콘택 형성방법.
- 제1항에 있어서,상기 산화막 식각시 타겟은 주변영역의 활성영역위에 산화막이 남도록 하는 것을 특징으로 하는 반도체소자의 비트라인 콘택 형성방법.
- 제8항에 있어서,상기 주변영역의 활성영역위에 남는 산화막 두께는 질화막 식각시 산화막에 대한 선택비와 질화막 식각후 세정공정시 제거되는 정도를 고려해서 결정하는 것을 특징으로 하는 반도체소자의 비트라인 콘택 형성방법.
- 제1항에 있어서,상기 질화막 식각시 주변회로영역의 워드라인 상부의 하드마스크 질화막의 남은 두께를 타겟으로 하는 것을 특징으로 하는 반도체소자의 비트라인 콘택 형성방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-1998-0058627A KR100471410B1 (ko) | 1998-12-24 | 1998-12-24 | 반도체소자의 비트라인 콘택 형성방법 |
Applications Claiming Priority (1)
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KR10-1998-0058627A KR100471410B1 (ko) | 1998-12-24 | 1998-12-24 | 반도체소자의 비트라인 콘택 형성방법 |
Publications (2)
Publication Number | Publication Date |
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KR20000042460A KR20000042460A (ko) | 2000-07-15 |
KR100471410B1 true KR100471410B1 (ko) | 2005-05-27 |
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KR10-1998-0058627A Expired - Fee Related KR100471410B1 (ko) | 1998-12-24 | 1998-12-24 | 반도체소자의 비트라인 콘택 형성방법 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100720262B1 (ko) | 2006-01-26 | 2007-05-23 | 주식회사 하이닉스반도체 | 반도체 소자의 제조 방법 |
US11974428B2 (en) | 2021-12-29 | 2024-04-30 | Winbond Electronics Corp. | Memory device and method of manufacturing the same |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001291844A (ja) * | 2000-04-06 | 2001-10-19 | Fujitsu Ltd | 半導体装置及びその製造方法 |
KR100363701B1 (ko) * | 2000-12-29 | 2002-12-05 | 주식회사 하이닉스반도체 | 반도체 소자의 비트 라인 콘택 형성 방법 |
KR100390948B1 (ko) * | 2001-06-28 | 2003-07-12 | 주식회사 하이닉스반도체 | 반도체 소자의 콘택홀 형성 방법 |
KR100745907B1 (ko) * | 2001-06-30 | 2007-08-02 | 주식회사 하이닉스반도체 | 반도체 소자의 플러그 형성 방법 |
KR100439771B1 (ko) * | 2001-12-15 | 2004-07-12 | 주식회사 하이닉스반도체 | 반도체 소자의 하드마스크 손실 방지 방법 |
KR100866123B1 (ko) * | 2002-07-15 | 2008-10-31 | 주식회사 하이닉스반도체 | 반도체소자의 비트라인 형성방법 |
KR100753047B1 (ko) * | 2004-07-29 | 2007-08-30 | 주식회사 하이닉스반도체 | 비트라인 콘택 마스크가 머지된 반도체 소자 및 그 제조방법 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0878642A (ja) * | 1994-09-06 | 1996-03-22 | Nippon Steel Corp | 半導体装置の製造方法 |
JPH08204141A (ja) * | 1995-01-23 | 1996-08-09 | Mitsubishi Electric Corp | 半導体装置及びその製造方法 |
KR19980045145A (ko) * | 1996-12-09 | 1998-09-15 | 김광호 | 반도체 장치의 콘택홀 형성방법 |
-
1998
- 1998-12-24 KR KR10-1998-0058627A patent/KR100471410B1/ko not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0878642A (ja) * | 1994-09-06 | 1996-03-22 | Nippon Steel Corp | 半導体装置の製造方法 |
JPH08204141A (ja) * | 1995-01-23 | 1996-08-09 | Mitsubishi Electric Corp | 半導体装置及びその製造方法 |
KR19980045145A (ko) * | 1996-12-09 | 1998-09-15 | 김광호 | 반도체 장치의 콘택홀 형성방법 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100720262B1 (ko) | 2006-01-26 | 2007-05-23 | 주식회사 하이닉스반도체 | 반도체 소자의 제조 방법 |
US11974428B2 (en) | 2021-12-29 | 2024-04-30 | Winbond Electronics Corp. | Memory device and method of manufacturing the same |
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Publication number | Publication date |
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KR20000042460A (ko) | 2000-07-15 |
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