JP2022504926A - ビット線抵抗低減のためのキャップ層 - Google Patents
ビット線抵抗低減のためのキャップ層 Download PDFInfo
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- JP2022504926A JP2022504926A JP2021520541A JP2021520541A JP2022504926A JP 2022504926 A JP2022504926 A JP 2022504926A JP 2021520541 A JP2021520541 A JP 2021520541A JP 2021520541 A JP2021520541 A JP 2021520541A JP 2022504926 A JP2022504926 A JP 2022504926A
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 119
- 239000002184 metal Substances 0.000 claims abstract description 119
- 230000004888 barrier function Effects 0.000 claims abstract description 75
- 238000000034 method Methods 0.000 claims abstract description 69
- 239000000758 substrate Substances 0.000 claims abstract description 42
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract description 22
- 229920005591 polysilicon Polymers 0.000 claims abstract description 22
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 26
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 26
- 238000000151 deposition Methods 0.000 claims description 16
- 239000010936 titanium Substances 0.000 claims description 16
- 230000008021 deposition Effects 0.000 claims description 13
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 12
- 229910052719 titanium Inorganic materials 0.000 claims description 11
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 9
- 229910052715 tantalum Inorganic materials 0.000 claims description 9
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 9
- 239000010948 rhodium Substances 0.000 claims description 7
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 7
- 229910052721 tungsten Inorganic materials 0.000 claims description 7
- 239000010937 tungsten Substances 0.000 claims description 7
- GNKTZDSRQHMHLZ-UHFFFAOYSA-N [Si].[Si].[Si].[Ti].[Ti].[Ti].[Ti].[Ti] Chemical compound [Si].[Si].[Si].[Ti].[Ti].[Ti].[Ti].[Ti] GNKTZDSRQHMHLZ-UHFFFAOYSA-N 0.000 claims description 6
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 5
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 5
- 238000000231 atomic layer deposition Methods 0.000 claims description 5
- 238000005229 chemical vapour deposition Methods 0.000 claims description 5
- 229910052707 ruthenium Inorganic materials 0.000 claims description 5
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 4
- 229910052703 rhodium Inorganic materials 0.000 claims description 4
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 239000011733 molybdenum Substances 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- 229910052741 iridium Inorganic materials 0.000 claims description 2
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 2
- 239000012528 membrane Substances 0.000 abstract description 27
- 238000010586 diagram Methods 0.000 abstract description 6
- 239000004721 Polyphenylene oxide Substances 0.000 abstract description 2
- 229920000570 polyether Polymers 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 38
- 229910052799 carbon Inorganic materials 0.000 description 38
- 239000010408 film Substances 0.000 description 25
- 125000006850 spacer group Chemical group 0.000 description 17
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 13
- 229910052710 silicon Inorganic materials 0.000 description 13
- 239000010703 silicon Substances 0.000 description 13
- 239000003990 capacitor Substances 0.000 description 11
- 238000005530 etching Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 10
- 238000003860 storage Methods 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 229910052814 silicon oxide Inorganic materials 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 150000004767 nitrides Chemical class 0.000 description 4
- 235000012431 wafers Nutrition 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000001451 molecular beam epitaxy Methods 0.000 description 3
- 125000004433 nitrogen atom Chemical group N* 0.000 description 3
- 238000005240 physical vapour deposition Methods 0.000 description 3
- 238000009966 trimming Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005137 deposition process Methods 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000000059 patterning Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000006557 surface reaction Methods 0.000 description 2
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000014509 gene expression 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
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000002488 metal-organic chemical vapour deposition Methods 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
Classifications
-
- 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
- H10B12/482—Bit lines
-
- 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
-
- 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
- H01L21/027—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
- H01L21/0334—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 size, orientation, disposition, behaviour, shape, in horizontal or vertical plane
- H01L21/0337—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 size, orientation, disposition, behaviour, shape, in horizontal or vertical plane characterised by the process involved to create the mask, e.g. lift-off masks, sidewalls, or to modify the mask, e.g. pre-treatment, post-treatment
-
- 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
- H01L21/32139—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer using masks
-
- 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
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Semiconductor Memories (AREA)
- Massaging Devices (AREA)
- Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
- Noodles (AREA)
- Electrodes Of Semiconductors (AREA)
- Formation Of Insulating Films (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Abstract
Description
Claims (15)
- 少なくとも1つの膜積層体を有する基板
を備えるメモリデバイスであって、前記膜積層体が、
前記基板上にポリシリコン層、
前記ポリシリコン層上にビット線金属層、
前記ビット線金属層上にキャップ層、及び
前記キャップ層上にハードマスク
を備える、メモリデバイス。 - 前記ポリシリコン層と前記ビット線金属層との間にバリア金属層を更に備える、請求項1に記載のメモリデバイス。
- 前記バリア金属層と前記ビット線金属層との間にバリア層を更に備える、請求項2に記載のメモリデバイス。
- 前記金属層が、チタン(Ti)、タンタル(Ta)、ケイ化チタン(TiSi)又はケイ化タンタル(TaSi)のうちの1つ又は複数を含み、前記バリア層が、窒化チタン(TiN)を含む、請求項3に記載のメモリデバイス。
- 前記ビット線金属層が、タングステン(W)、ルテニウム(Ru)、イリジウム(Ir)又はモリブデン(Mo)、白金(Pt)又はロジウム(Rh)のうちの1つ又は複数を含む、請求項1に記載のメモリデバイス。
- 前記キャップ層が、窒化ケイ素、炭窒化ケイ素又は炭化ケイ素を含む、請求項1に記載のメモリデバイス。
- 前記キャップ層が、約30Åから約50Åの範囲の厚さを有する、請求項6に記載のメモリデバイス。
- 前記ビット線金属層が、約100Åから約300Åの範囲の厚さを有する、請求項7に記載のメモリデバイス。
- 前記ハードマスクが窒化ケイ素(SiN)を含み、前記キャップ層が、前記ハードマスクとは異なる密度、異なる多孔性又は異なる堆積温度のうちの1つ又は複数を有する窒化ケイ素を含む、請求項1に記載のメモリデバイス。
- メモリデバイスを形成する方法であって、前記方法が、
バリア層、及び前記バリア層上にビット線金属層を含む導電層を有する基板を提供することと、
約500℃以下の温度で、前記ビット線金属層上にキャップ層を形成することと、
約650℃以上の温度で、前記キャップ層上にハードマスクを形成することと
を含み、
前記ハードマスクの要素は、前記ビット線金属層内に移動することが実質的に防止される、方法。 - 前記キャップ層が、窒化ケイ素又は炭窒化ケイ素のうちの1つ又は複数を含む、請求項10に記載の方法。
- 前記キャップ層が、約30Åから約50Åの範囲の厚さを有する、請求項11に記載の方法。
- 前記キャップ層が、化学気相堆積又は原子層堆積プロセスによって堆積される、請求項12に記載の方法。
- 前記ハードマスクが窒化ケイ素を含む、請求項13に記載の方法。
- 前記ハードマスクが、約650℃以上の温度で炉を使用して堆積される、請求項14に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/164,236 | 2018-10-18 | ||
US16/164,236 US10700072B2 (en) | 2018-10-18 | 2018-10-18 | Cap layer for bit line resistance reduction |
PCT/US2019/056961 WO2020081948A1 (en) | 2018-10-18 | 2019-10-18 | Cap layer for bit line resistance reduction |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2022504926A true JP2022504926A (ja) | 2022-01-13 |
JP7303874B2 JP7303874B2 (ja) | 2023-07-05 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2021520541A Active JP7303874B2 (ja) | 2018-10-18 | 2019-10-18 | ビット線抵抗低減のためのキャップ層 |
Country Status (6)
Country | Link |
---|---|
US (2) | US10700072B2 (ja) |
JP (1) | JP7303874B2 (ja) |
KR (1) | KR102486455B1 (ja) |
CN (1) | CN112789724B (ja) |
TW (1) | TWI771622B (ja) |
WO (1) | WO2020081948A1 (ja) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
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US11329052B2 (en) * | 2019-08-02 | 2022-05-10 | Applied Materials, Inc. | Method of processing DRAM |
KR20210022979A (ko) | 2019-08-21 | 2021-03-04 | 삼성전자주식회사 | 집적회로 소자 및 그 제조 방법 |
JP7526361B2 (ja) | 2020-09-03 | 2024-07-31 | アプライド マテリアルズ インコーポレイテッド | 選択的異方性金属エッチング |
US12096617B2 (en) | 2021-01-14 | 2024-09-17 | Changxin Memory Technologies, Inc. | Method of manufacturing semiconductor structure and semiconductor structure |
CN112864098B (zh) * | 2021-01-14 | 2023-06-30 | 长鑫存储技术有限公司 | 半导体结构的制造方法及半导体结构 |
WO2022186941A1 (en) * | 2021-03-03 | 2022-09-09 | Applied Materials, Inc. | Selective barrier metal etching |
CN115084138A (zh) * | 2021-03-12 | 2022-09-20 | 长鑫存储技术有限公司 | 半导体结构的制备方法及半导体结构 |
CN113517181B (zh) * | 2021-04-27 | 2024-07-12 | 长江先进存储产业创新中心有限责任公司 | 一种硬掩膜叠层结构及半导体器件的形成方法 |
US20220415651A1 (en) * | 2021-06-29 | 2022-12-29 | Applied Materials, Inc. | Methods Of Forming Memory Device With Reduced Resistivity |
US20240038535A1 (en) * | 2022-07-28 | 2024-02-01 | International Business Machines Corporation | Metal hard mask for precise tuning of mandrels |
WO2024091323A1 (en) * | 2022-10-26 | 2024-05-02 | Applied Materials, Inc. | Aluminum oxide carbon hybrid hardmasks and methods for making the same |
TWI833537B (zh) * | 2023-01-04 | 2024-02-21 | 南亞科技股份有限公司 | 製造半導體結構之方法 |
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2019
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- 2019-10-18 JP JP2021520541A patent/JP7303874B2/ja active Active
- 2019-10-18 WO PCT/US2019/056961 patent/WO2020081948A1/en active Application Filing
- 2019-10-18 KR KR1020217014680A patent/KR102486455B1/ko active IP Right Grant
- 2019-10-18 CN CN201980064979.XA patent/CN112789724B/zh active Active
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KR20210059032A (ko) | 2021-05-24 |
KR102486455B1 (ko) | 2023-01-06 |
WO2020081948A1 (en) | 2020-04-23 |
US20200235104A1 (en) | 2020-07-23 |
US10700072B2 (en) | 2020-06-30 |
CN112789724B (zh) | 2024-10-18 |
TWI771622B (zh) | 2022-07-21 |
US20200126996A1 (en) | 2020-04-23 |
CN112789724A (zh) | 2021-05-11 |
TW202029468A (zh) | 2020-08-01 |
JP7303874B2 (ja) | 2023-07-05 |
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