KR100337073B1 - 반도체소자간의격리방법 - Google Patents
반도체소자간의격리방법 Download PDFInfo
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- KR100337073B1 KR100337073B1 KR1019940025287A KR19940025287A KR100337073B1 KR 100337073 B1 KR100337073 B1 KR 100337073B1 KR 1019940025287 A KR1019940025287 A KR 1019940025287A KR 19940025287 A KR19940025287 A KR 19940025287A KR 100337073 B1 KR100337073 B1 KR 100337073B1
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- 238000002955 isolation Methods 0.000 title claims abstract description 126
- 239000004065 semiconductor Substances 0.000 title claims abstract description 63
- 239000000758 substrate Substances 0.000 claims abstract description 75
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 38
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 38
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229910052814 silicon oxide Inorganic materials 0.000 claims abstract description 29
- 150000002500 ions Chemical class 0.000 claims abstract description 21
- 238000005530 etching Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 78
- 230000015572 biosynthetic process Effects 0.000 claims description 42
- 238000000034 method Methods 0.000 claims description 40
- 238000004518 low pressure chemical vapour deposition Methods 0.000 claims description 7
- 230000001590 oxidative effect Effects 0.000 claims description 7
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 238000001020 plasma etching Methods 0.000 claims description 4
- 238000005468 ion implantation Methods 0.000 claims description 3
- 229920002120 photoresistant polymer Polymers 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052785 arsenic Inorganic materials 0.000 claims description 2
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims description 2
- 229910052796 boron Inorganic materials 0.000 claims description 2
- 238000001312 dry etching Methods 0.000 claims description 2
- 229910052698 phosphorus Inorganic materials 0.000 claims description 2
- 239000011574 phosphorus Substances 0.000 claims description 2
- -1 boron dinyl ions Chemical class 0.000 claims 1
- 238000007598 dipping method Methods 0.000 claims 1
- 230000014759 maintenance of location Effects 0.000 claims 1
- 239000000243 solution Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000009792 diffusion process Methods 0.000 abstract description 3
- 241000293849 Cordylanthus Species 0.000 abstract description 2
- 125000006850 spacer group Chemical group 0.000 abstract 1
- 230000010354 integration Effects 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 7
- 238000011161 development Methods 0.000 description 6
- 150000004767 nitrides Chemical class 0.000 description 6
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 5
- 239000013078 crystal Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000003071 parasitic effect Effects 0.000 description 4
- 229920005591 polysilicon Polymers 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012546 transfer Methods 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
- H01L21/70—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
- H01L21/76—Making of isolation regions between components
- H01L21/762—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers
- H01L21/76202—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using a local oxidation of silicon, e.g. LOCOS, SWAMI, SILO
- H01L21/76205—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using a local oxidation of silicon, e.g. LOCOS, SWAMI, SILO in a region being recessed from the surface, e.g. in a recess, groove, tub or trench region
-
- 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
- H01L21/31116—Etching inorganic layers by chemical means by dry-etching
-
- 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
- H01L21/76—Making of isolation regions between components
- H01L21/762—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers
- H01L21/76202—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using a local oxidation of silicon, e.g. LOCOS, SWAMI, SILO
- H01L21/76213—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using a local oxidation of silicon, e.g. LOCOS, SWAMI, SILO introducing electrical inactive or active impurities in the local oxidation region, e.g. to alter LOCOS oxide growth characteristics or for additional isolation purpose
- H01L21/76216—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using a local oxidation of silicon, e.g. LOCOS, SWAMI, SILO introducing electrical inactive or active impurities in the local oxidation region, e.g. to alter LOCOS oxide growth characteristics or for additional isolation purpose introducing electrical active impurities in the local oxidation region for the sole purpose of creating channel stoppers
-
- 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
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming 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
- H01L21/02123—Forming 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
- H01L21/02164—Forming 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 being a silicon oxide, e.g. SiO2
-
- 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
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming 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
- H01L21/02123—Forming 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
- H01L21/0217—Forming 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 being a silicon nitride not containing oxygen, e.g. SixNy or SixByNz
-
- 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
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02225—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer
- H01L21/0226—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process
- H01L21/02263—Forming 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
- H01L21/02271—Forming 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
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Element Separation (AREA)
Abstract
Description
Claims (15)
- 반도체기판상에서 단위 소자간을 절연시키는 반도체 소자간의 격리방법에 있어서,1) 반도체기판에 소정 두께의 실리콘산화막과 실리콘질화막을 순차적으로 형성하여 제 1 물질층을 형성시키는 단계와,2) 상기 제 1 물질층상에 소정 두께의 제 2 물질층과 제 3 물질층을 순차적으로 형성시키는 단계와,3) 상기 제 3 물질층상에 포토레지스터로 소자격리영역과 소자형성영역을 구분하는 패턴을 형성시키고, 상기 소자격리영역의 제 3 물질층과 제 2 물질층을 식각하여 소자격리영역의 제 1 물질층을 노출시키는 단계와,4) 상기 제 1 물질층을 노출시킨 소자격리영역에서 제 2 물질층과 제 3 물질층의 양측벽에 측벽스페이스를 형성시키는 단계와,5) 상기 소자격리영역의 측벽스페이스와 상기 소자형성영역의 제 3 물질층을 마스크로 소자격리영역의 제 1 물질층을 제거하고 소자격리영역의 기판을 식각하여 트렌치를 형성시키는 단계와,6) 상기 소자격리영역의 측벽스페이스와 상기 소자형성영역의 제 3 물질층을 마스크로 상기 소자격리영역의 트렌치를 형성시킨 기판 저면에 기판과 같은 도전형의 채널 스톱용 이온을 주입시키는 단계와,7) 상기 측벽스페이스와, 상기 소자격리영역에서 양측 벽면의 제 1 물질층과제 3 물질층의 사이에 형성된 제 2 물질층을 소자형성영역의 가장자리에서 수평방향으로 일정량 제거하는 단계와,8) 상기 소자격리영역의 트랜치된 기판표면을 산화시키고 소정 두께로 성장시켜서 필드격리막을 형성시키는 단계를 포함하여 이루어진 반도체 소자간의 격리방법.
- 제 1 항에 있이서,상기 제 1 물질층에서 실리콘산화막은 두께 30Å에서 50Å의 범위로 형성시키고 그 위에 저압화학기상증착법으로 실리콘질화막을 두께 300Å에서 500Å의 범위로 형성시키는 것이 특징인 반도체 소자간의 격리방법.
- 제 2 항에 있어서,상기 제 1물질층의 실리콘산화막은 용광로 온도 대략 850℃, 내부기체 H2\O2의 분위기속에서 기판 전면을 산화시켜서 형성시키는 것이 특징인 반도체 소자간의 격리방법.
- 제 1 항에 있어서,상기 2)단계에서 상기 제 2 물질층으로는 실리콘산화막을 두께 500Å에서 1500Å의 범위로 형성시키고, 상기 제 3 물질층으로는 실리콘질화막을 저압 화학기상 증착법으로 두께 1000Å에서 2500Å의 범위로 형성시키는 것이 특징인 반도체 소자간의 격리방법.
- 제 1 항에 있어서,상기 3)단계에서 상기 소자격리영역의 제 2 물질층과 제 3 물질층을 반응성 이온식각방식으로 식각하여 상기 소자격리영역의 제 1 물질층 상면을 노출시키는 깃이 특징인 반도체 소자간의 격리방법.
- 제 5 항에 있어서,상기 반응성 이온식각방식은 CHF3/ CF4가스를 플라즈마상태로 변환시켜 사용하는 것이 특징인 반도체 소자간의 격리방법.
- 제 1 항에 있어서,상기 4)단계에서 상기 기판전면에 저압 화학 기상증착 산화막을 형성시키고 에치백하여 소자격리영역에서 제 2 물질층과 제 3 물질층의 양측벽에 측벽스페이스를 형성시키는 것이 특징인 반도체 소자간의 격리방법.
- 제 1 항에 있어서,상기 5)단계에서 상기 소자격리영역의 제 1 물질층을 건식식각방식으로 제기하고 일렉트론 사이클로트론 레저넌스 식각방식으로 기판을 식각하여 트랜치를 형성시키는 것이 특징인 반도체 소자간의 격리방법.
- 제 1 항에 있어서,상기 6)단계예서 상기 채널 스톱용 이온은 노출시킨 기판이 P형인 경우에 붕소 딘일이온이나 BF2 +이온을 40 KeV에서 농도 3.0 * l013개/cm-2의 조건으로 주입시키는 것이 특징인 반도체 소자간의 격리방법.
- 제 1 항에 있어서,상기 6)단계에서 상기 채널 스톱용 이온은 노출시킨 기판이 N형인 경우에 인 이나 비소 단일이온을 50 KeV에서 농도 5.0 * 1012개/㎝-2의 조건으로 주입시키는 것이 특징인 반도체 소자간의 격리방법.
- 제 1 항에 있어서,상기 6)단계에서 상기 측벽스페이스를 제거한 후에 채널 스톱용 이온주입을 실시하는 것이 특징인 반도체 소자간의 격리방법.
- 제 1 항에 있어서,상기 7)단계에서 제 2 물질층으로 실리콘산화막을 형성시킬 경우에 상기 채널 스톱용 이온을 주입시킨 기판을 HF수용액에 담구어 상기 측벽스페이스와 상기 소자격리영역의 앙벽면에서 상기 제 2 물질층의 실리콘산화막의 일정량을 소자형성영역의 가장자에서 수평방향으로 일정량 제거하는 것이 특징인 반도체 소자간의 격리방법.
- 제 1 항에 있어서,상기 8)단계에서 상기 소자격리영역의 트랜치된 기판표면을 산화시키고 4000Å에서 7000Å 범위의 두께로 성장시키서 필드격리막을 형성시키는 것이 특징인 반도체 소자간의 격리방법.
- 제 12 항에 있어서,상기 소자격리영역의 트랜치된 기판표면을 온도 1000℃, 내부 기체 H2\02의 분위기속에서 상기 소자격리영역의 트렌치된 기판표면을 산화시키는 것이 특징인 반도체 소자간의 격리방법.
- 제 1 항에 있어서,상기 소자형성영역의 제 1 물질층과 제 3 물질층의 실리콘질화막은 온도 170℃의 H3PO4수용액에 담구어 제거하고, 상기 제 1 물질층과 제 2 물질층의 실리콘산화막은 HF 수용액에 담구어 제거하는 것이 특징인 반도체 소자간의 격리방법.
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Application Number | Priority Date | Filing Date | Title |
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KR1019940025287A KR100337073B1 (ko) | 1994-10-04 | 1994-10-04 | 반도체소자간의격리방법 |
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KR1019940025287A KR100337073B1 (ko) | 1994-10-04 | 1994-10-04 | 반도체소자간의격리방법 |
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KR960015844A KR960015844A (ko) | 1996-05-22 |
KR100337073B1 true KR100337073B1 (ko) | 2002-11-23 |
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KR (1) | KR100337073B1 (ko) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0268929A (ja) * | 1988-09-02 | 1990-03-08 | Sony Corp | 半導体装置の製造方法 |
KR920013670A (ko) * | 1990-12-22 | 1992-07-29 | 김광호 | 반도체 장치의 소자분리방법 |
JPH05304143A (ja) * | 1992-04-28 | 1993-11-16 | Sharp Corp | 素子分離領域の形成方法 |
JPH0621047A (ja) * | 1992-05-08 | 1994-01-28 | Sanyo Electric Co Ltd | 半導体装置及びその製造方法 |
-
1994
- 1994-10-04 KR KR1019940025287A patent/KR100337073B1/ko not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0268929A (ja) * | 1988-09-02 | 1990-03-08 | Sony Corp | 半導体装置の製造方法 |
KR920013670A (ko) * | 1990-12-22 | 1992-07-29 | 김광호 | 반도체 장치의 소자분리방법 |
JPH05304143A (ja) * | 1992-04-28 | 1993-11-16 | Sharp Corp | 素子分離領域の形成方法 |
JPH0621047A (ja) * | 1992-05-08 | 1994-01-28 | Sanyo Electric Co Ltd | 半導体装置及びその製造方法 |
Also Published As
Publication number | Publication date |
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KR960015844A (ko) | 1996-05-22 |
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