JP7208374B2 - 三次元(3d)メモリデバイスを形成するための方法、三次元(3d)メモリデバイス内にチャネル穴を形成するための方法 - Google Patents
三次元(3d)メモリデバイスを形成するための方法、三次元(3d)メモリデバイス内にチャネル穴を形成するための方法 Download PDFInfo
- Publication number
- JP7208374B2 JP7208374B2 JP2021519656A JP2021519656A JP7208374B2 JP 7208374 B2 JP7208374 B2 JP 7208374B2 JP 2021519656 A JP2021519656 A JP 2021519656A JP 2021519656 A JP2021519656 A JP 2021519656A JP 7208374 B2 JP7208374 B2 JP 7208374B2
- Authority
- JP
- Japan
- Prior art keywords
- sacrificial layer
- opening
- conformal sacrificial
- etchant
- layer
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims description 91
- 239000000758 substrate Substances 0.000 claims description 69
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 35
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 35
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 27
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 27
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 24
- 238000000151 deposition Methods 0.000 claims description 19
- 238000005530 etching Methods 0.000 claims description 18
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 12
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 10
- 230000007423 decrease Effects 0.000 claims description 9
- 239000004065 semiconductor Substances 0.000 description 47
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 37
- 229910052710 silicon Inorganic materials 0.000 description 37
- 239000010703 silicon Substances 0.000 description 37
- 239000004020 conductor Substances 0.000 description 21
- 238000004519 manufacturing process Methods 0.000 description 19
- 239000000463 material Substances 0.000 description 17
- 238000004140 cleaning Methods 0.000 description 13
- 239000010408 film Substances 0.000 description 10
- 230000008021 deposition Effects 0.000 description 9
- 239000003989 dielectric material Substances 0.000 description 9
- 230000002093 peripheral effect Effects 0.000 description 9
- 238000001312 dry etching Methods 0.000 description 6
- 238000005240 physical vapour deposition Methods 0.000 description 6
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 6
- 229920005591 polysilicon Polymers 0.000 description 6
- 230000005641 tunneling Effects 0.000 description 6
- 238000000231 atomic layer deposition Methods 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 5
- 238000005229 chemical vapour deposition Methods 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 5
- 229910052721 tungsten Inorganic materials 0.000 description 5
- 239000010937 tungsten Substances 0.000 description 5
- 238000001039 wet etching Methods 0.000 description 5
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 4
- 238000000427 thin-film deposition Methods 0.000 description 4
- 235000012431 wafers Nutrition 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000000708 deep reactive-ion etching Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052732 germanium Inorganic materials 0.000 description 3
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 2
- 229910000577 Silicon-germanium Inorganic materials 0.000 description 2
- -1 but not limited to Substances 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000004943 liquid phase epitaxy Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 238000000927 vapour-phase epitaxy Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- GPXJNWSHGFTCBW-UHFFFAOYSA-N Indium phosphide Chemical compound [In]#P GPXJNWSHGFTCBW-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000000872 buffer Substances 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
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000007733 ion plating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001451 molecular beam epitaxy Methods 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- 238000004544 sputter deposition 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
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B43/00—EEPROM devices comprising charge-trapping gate insulators
- H10B43/20—EEPROM devices comprising charge-trapping gate insulators characterised by three-dimensional arrangements, e.g. with cells on different height levels
- H10B43/23—EEPROM devices comprising charge-trapping gate insulators characterised by three-dimensional arrangements, e.g. with cells on different height levels with source and drain on different levels, e.g. with sloping channels
- H10B43/27—EEPROM devices comprising charge-trapping gate insulators characterised by three-dimensional arrangements, e.g. with cells on different height levels with source and drain on different levels, e.g. with sloping channels the channels comprising vertical portions, e.g. U-shaped channels
-
- 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
- H01L21/02041—Cleaning
- H01L21/02057—Cleaning during device manufacture
-
- 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
- H01L21/02041—Cleaning
- H01L21/02057—Cleaning during device manufacture
- H01L21/0206—Cleaning during device manufacture during, before or after processing of insulating layers
-
- 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
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B41/00—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates
- H10B41/20—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates characterised by three-dimensional arrangements, e.g. with cells on different height levels
- H10B41/23—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates characterised by three-dimensional arrangements, e.g. with cells on different height levels with source and drain on different levels, e.g. with sloping channels
- H10B41/27—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates characterised by three-dimensional arrangements, e.g. with cells on different height levels with source and drain on different levels, e.g. with sloping channels the channels comprising vertical portions, e.g. U-shaped channels
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B41/00—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates
- H10B41/30—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates characterised by the memory core region
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B43/00—EEPROM devices comprising charge-trapping gate insulators
- H10B43/30—EEPROM devices comprising charge-trapping gate insulators characterised by the memory core region
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Semiconductor Memories (AREA)
- Non-Volatile Memory (AREA)
- Weting (AREA)
Description
Claims (17)
- 三次元(3D)メモリデバイスを形成するための方法であって、
基板上に交互に配置された第1の誘電体層および第2の誘電体層を含む誘電体スタックを形成することと、
前記誘電体スタックを貫通して垂直に延びる開口部を形成することと、
前記開口部の直径の変動が減少するように、前記開口部の側壁に沿って非共形の犠牲層を形成することと、
前記非共形の犠牲層および前記誘電体スタックのうち前記非共形の犠牲層に当接する部分を除去することと、
前記非共形の犠牲層および前記誘電体スタックの一部を除去した後、前記開口部内にチャネル構造を形成することとを含む、方法。 - 前記非共形の犠牲層の厚さが、前記開口部の前記側壁に沿って上部から底部に向かって減少する、請求項1に記載の方法。
- 前記非共形の犠牲層および前記誘電体スタックの一部を除去することは、前記開口部を通して、前記第1の誘電体層と前記第2の誘電体層との間の選択性が約0.9から約1.1の間である第1のエッチング液を施与することを含む、請求項1に記載の方法。
- 前記第1のエッチング液の前記選択性が、約1である、請求項3に記載の方法。
- 前記第1および第2の誘電体層が、酸化ケイ素および窒化ケイ素をそれぞれ含み、
前記第1のエッチング液が、フッ化水素酸と硫酸の混合物を含む、請求項3に記載の方法。 - 前記非共形の犠牲層が、酸化ケイ素を含む、請求項1に記載の方法。
- 前記非共形の犠牲層を形成する前に、前記開口部を通して第2のエッチング液を施与して前記開口部内のエッチング後の残留物を除去することをさらに含む、請求項1に記載の方法。
- 前記第2のエッチング液が、硫酸と過酸化水素の混合物を含む、請求項7に記載の方法。
- 前記非共形の犠牲層を形成した後、前記開口部の前記直径の前記変動が、約25%以下である、請求項1に記載の方法。
- 前記非共形の犠牲層および前記誘電体スタックの一部を除去した後、前記開口部の前記直径の前記変動が、約25%以下である、請求項9に記載の方法。
- 三次元(3D)メモリデバイス内にチャネル穴を形成するための方法であって、
基板上の交互に配置された酸化ケイ素層および窒化ケイ素層を貫通して開口部をエッチングすることと、
前記開口部の側壁に沿って、厚さが前記開口部の前記側壁に沿って上部から底部に向かって減少する非共形の犠牲層を堆積させることと、
前記開口部を通して、酸化ケイ素と窒化ケイ素との間の選択性が約0.9から約1.1の間である第1のエッチング液を施与して、前記チャネル穴を形成することとを含み、
前記非共形の犠牲層が、酸化ケイ素を含み、
前記非共形の犠牲層ならびに前記非共形の犠牲層に当接する前記酸化ケイ素層および窒化ケイ素層の一部が、前記第1のエッチング液によって除去される、方法。 - 前記第1のエッチング液の選択性が、約1である、請求項11に記載の方法。
- 前記第1のエッチング液が、フッ化水素酸と硫酸の混合物を含む、請求項11に記載の方法。
- 前記非共形の犠牲層を堆積させる前に、前記開口部を通して第2のエッチング液を施与して前記開口部内のエッチング後の残留物を除去することをさらに含む、請求項11に記載の方法。
- 前記第2のエッチング液が、硫酸と過酸化水素の混合物を含む、請求項14に記載の方法。
- 前記非共形の犠牲層を堆積させた後、前記開口部の直径の変動が、約25%以下である、請求項11に記載の方法。
- 前記第1のエッチング液を施与した後、前記開口部の前記直径の前記変動が、約25%以下である、請求項16に記載の方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2018/109826 WO2020073276A1 (en) | 2018-10-11 | 2018-10-11 | Method for forming channel hole in three-dimensional memory device using nonconformal sacrificial layer |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2022504576A JP2022504576A (ja) | 2022-01-13 |
JP7208374B2 true JP7208374B2 (ja) | 2023-01-18 |
Family
ID=65462104
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2021519656A Active JP7208374B2 (ja) | 2018-10-11 | 2018-10-11 | 三次元(3d)メモリデバイスを形成するための方法、三次元(3d)メモリデバイス内にチャネル穴を形成するための方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US10790297B2 (ja) |
EP (1) | EP3821465B1 (ja) |
JP (1) | JP7208374B2 (ja) |
KR (1) | KR102560513B1 (ja) |
CN (1) | CN109417071B (ja) |
TW (1) | TWI692852B (ja) |
WO (1) | WO2020073276A1 (ja) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020206681A1 (en) * | 2019-04-12 | 2020-10-15 | Yangtze Memory Technologies Co., Ltd. | Three-dimensional memory device with deposited semiconductor plugs and methods for forming the same |
JP7365895B2 (ja) * | 2019-12-25 | 2023-10-20 | 東京エレクトロン株式会社 | 基板処理方法および基板処理装置 |
CN111403403B (zh) * | 2020-03-31 | 2023-05-26 | 长江存储科技有限责任公司 | 三维存储器及其制造方法 |
CN111788687B (zh) * | 2020-04-14 | 2021-09-14 | 长江存储科技有限责任公司 | 用于形成三维存储器件的方法 |
WO2021226979A1 (en) * | 2020-05-15 | 2021-11-18 | Yangtze Memory Technologies Co., Ltd. | Three-dimensional nand memory device and method of forming the same |
CN112490140B (zh) * | 2020-11-18 | 2023-08-01 | 长江存储科技有限责任公司 | 一种监测沟道通孔的开封方法 |
KR102578437B1 (ko) * | 2021-02-17 | 2023-09-14 | 한양대학교 산학협력단 | 개선된 스택 연결 부위를 갖는 3차원 플래시 메모리 및 그 제조 방법 |
CN112992910B (zh) * | 2021-03-24 | 2023-04-18 | 长江存储科技有限责任公司 | 三维存储器及其制备方法 |
WO2022205121A1 (en) * | 2021-03-31 | 2022-10-06 | Yangtze Memory Technologies Co., Ltd. | Method for forming semiconductor structure |
US11626517B2 (en) * | 2021-04-13 | 2023-04-11 | Macronix International Co., Ltd. | Semiconductor structure including vertical channel portion and manufacturing method for the same |
KR20240042348A (ko) * | 2022-09-23 | 2024-04-02 | 양쯔 메모리 테크놀로지스 씨오., 엘티디. | 3차원 메모리 디바이스 및 이를 형성하기 위한 방법 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009295617A (ja) | 2008-06-02 | 2009-12-17 | Toshiba Corp | 不揮発性半導体記憶装置 |
US20140367762A1 (en) | 2013-04-01 | 2014-12-18 | Sandisk Technologies Inc. | Method of forming an active area with floating gate negative offset profile in fg nand memory |
JP2015177118A (ja) | 2014-03-17 | 2015-10-05 | 株式会社東芝 | 半導体記憶装置及びその製造方法 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101052921B1 (ko) * | 2008-07-07 | 2011-07-29 | 주식회사 하이닉스반도체 | 버티컬 플로팅 게이트를 구비하는 플래시 메모리소자의제조방법 |
KR101498676B1 (ko) * | 2008-09-30 | 2015-03-09 | 삼성전자주식회사 | 3차원 반도체 장치 |
KR101650841B1 (ko) * | 2010-04-27 | 2016-08-25 | 삼성전자주식회사 | 수직 구조의 비휘발성 메모리 소자 |
JP5180263B2 (ja) * | 2010-07-23 | 2013-04-10 | 倉敷紡績株式会社 | 基板処理装置 |
KR20120068392A (ko) * | 2010-12-17 | 2012-06-27 | 삼성전자주식회사 | 비휘발성 메모리 소자 및 반도체 소자의 콘택 플러그의 제조 방법 |
KR20130127791A (ko) * | 2012-05-15 | 2013-11-25 | 에스케이하이닉스 주식회사 | 비휘발성 메모리 장치의 제조 방법 |
KR20150146073A (ko) * | 2014-06-20 | 2015-12-31 | 에스케이하이닉스 주식회사 | 반도체 장치 및 그 제조 방법 |
US9570460B2 (en) * | 2014-07-29 | 2017-02-14 | Sandisk Technologies Llc | Spacer passivation for high-aspect ratio opening film removal and cleaning |
US9997373B2 (en) | 2014-12-04 | 2018-06-12 | Lam Research Corporation | Technique to deposit sidewall passivation for high aspect ratio cylinder etch |
KR20160097002A (ko) * | 2015-02-06 | 2016-08-17 | 에스케이하이닉스 주식회사 | 반도체 장치 및 그 제조방법 |
US9461063B1 (en) * | 2015-05-06 | 2016-10-04 | Macronix International Co., Ltd. | Method for forming a semiconductor structure |
US9853043B2 (en) * | 2015-08-25 | 2017-12-26 | Sandisk Technologies Llc | Method of making a multilevel memory stack structure using a cavity containing a sacrificial fill material |
CN105374826B (zh) * | 2015-10-20 | 2019-01-15 | 中国科学院微电子研究所 | 三维半导体器件及其制造方法 |
US9620512B1 (en) * | 2015-10-28 | 2017-04-11 | Sandisk Technologies Llc | Field effect transistor with a multilevel gate electrode for integration with a multilevel memory device |
US9842851B2 (en) * | 2015-10-30 | 2017-12-12 | Sandisk Technologies Llc | Three-dimensional memory devices having a shaped epitaxial channel portion |
KR20170082893A (ko) * | 2016-01-07 | 2017-07-17 | 에스케이하이닉스 주식회사 | 메모리 장치의 제조 방법 |
CN108206188B (zh) * | 2016-12-19 | 2020-06-09 | 旺宏电子股份有限公司 | 三维存储器元件及其制作方法 |
US10056399B2 (en) * | 2016-12-22 | 2018-08-21 | Sandisk Technologies Llc | Three-dimensional memory devices containing inter-tier dummy memory cells and methods of making the same |
KR102333439B1 (ko) * | 2017-04-28 | 2021-12-03 | 삼성전자주식회사 | 반도체 장치 및 그 제조 방법 |
-
2018
- 2018-10-11 EP EP18936737.8A patent/EP3821465B1/en active Active
- 2018-10-11 JP JP2021519656A patent/JP7208374B2/ja active Active
- 2018-10-11 WO PCT/CN2018/109826 patent/WO2020073276A1/en unknown
- 2018-10-11 CN CN201880001993.0A patent/CN109417071B/zh active Active
- 2018-10-11 KR KR1020217001261A patent/KR102560513B1/ko active IP Right Grant
- 2018-11-20 TW TW107141219A patent/TWI692852B/zh active
- 2018-11-20 US US16/195,855 patent/US10790297B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009295617A (ja) | 2008-06-02 | 2009-12-17 | Toshiba Corp | 不揮発性半導体記憶装置 |
US20140367762A1 (en) | 2013-04-01 | 2014-12-18 | Sandisk Technologies Inc. | Method of forming an active area with floating gate negative offset profile in fg nand memory |
JP2015177118A (ja) | 2014-03-17 | 2015-10-05 | 株式会社東芝 | 半導体記憶装置及びその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
TWI692852B (zh) | 2020-05-01 |
WO2020073276A1 (en) | 2020-04-16 |
US10790297B2 (en) | 2020-09-29 |
EP3821465A1 (en) | 2021-05-19 |
TW202015217A (zh) | 2020-04-16 |
KR20210021046A (ko) | 2021-02-24 |
JP2022504576A (ja) | 2022-01-13 |
US20200119042A1 (en) | 2020-04-16 |
EP3821465A4 (en) | 2022-03-16 |
EP3821465B1 (en) | 2024-03-06 |
CN109417071B (zh) | 2019-11-22 |
KR102560513B1 (ko) | 2023-07-26 |
CN109417071A (zh) | 2019-03-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP7208374B2 (ja) | 三次元(3d)メモリデバイスを形成するための方法、三次元(3d)メモリデバイス内にチャネル穴を形成するための方法 | |
US10861868B2 (en) | Methods for forming structurally-reinforced semiconductor plug in three-dimensional memory device | |
US10680010B2 (en) | Three-dimensional memory device having zigzag slit structures and method for forming the same | |
US20220367508A1 (en) | Three-dimensional memory device having pocket structure in memory string and method for forming the same | |
JP7224450B2 (ja) | 三次元メモリデバイスを形成するための方法 | |
US11521986B2 (en) | Interconnect structures of three-dimensional memory devices | |
US10892277B2 (en) | High-κ dielectric layer in three-dimensional memory devices and methods for forming the same | |
CN112635479B (zh) | 具有外延生长的半导体沟道的三维存储器件及其形成方法 | |
WO2022056653A1 (en) | Channel structures having protruding portions in three-dimensional memory device and method for forming the same | |
US11800707B2 (en) | Three-dimensional memory device with reduced local stress |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20210408 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20210408 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20220414 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20220419 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20220719 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20221206 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20230105 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 7208374 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |