JP2019531604A - ルテニウムライナーと共に銅のエレクトロマイグレーションを改善するドープされた選択的な金属キャップ - Google Patents
ルテニウムライナーと共に銅のエレクトロマイグレーションを改善するドープされた選択的な金属キャップ Download PDFInfo
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- JP2019531604A JP2019531604A JP2019517849A JP2019517849A JP2019531604A JP 2019531604 A JP2019531604 A JP 2019531604A JP 2019517849 A JP2019517849 A JP 2019517849A JP 2019517849 A JP2019517849 A JP 2019517849A JP 2019531604 A JP2019531604 A JP 2019531604A
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- layer
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- forming
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 105
- 239000002184 metal Substances 0.000 title claims abstract description 105
- 239000010949 copper Substances 0.000 title claims description 37
- 229910052802 copper Inorganic materials 0.000 title claims description 34
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims description 32
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 title claims description 4
- 229910052707 ruthenium Inorganic materials 0.000 title claims description 4
- 239000000758 substrate Substances 0.000 claims abstract description 50
- 238000000034 method Methods 0.000 claims abstract description 49
- 230000004888 barrier function Effects 0.000 claims abstract description 46
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 41
- 239000010941 cobalt Substances 0.000 claims abstract description 41
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000002243 precursor Substances 0.000 claims abstract description 26
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 23
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 16
- BLJNPOIVYYWHMA-UHFFFAOYSA-N alumane;cobalt Chemical compound [AlH3].[Co] BLJNPOIVYYWHMA-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910045601 alloy Inorganic materials 0.000 claims description 15
- 239000000956 alloy Substances 0.000 claims description 15
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 239000004065 semiconductor Substances 0.000 claims description 10
- TUTOKIOKAWTABR-UHFFFAOYSA-N dimethylalumane Chemical compound C[AlH]C TUTOKIOKAWTABR-UHFFFAOYSA-N 0.000 claims description 9
- 239000001257 hydrogen Substances 0.000 claims description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims description 8
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- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- HPDFFVBPXCTEDN-UHFFFAOYSA-N copper manganese Chemical compound [Mn].[Cu] HPDFFVBPXCTEDN-UHFFFAOYSA-N 0.000 claims description 5
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- 238000009713 electroplating Methods 0.000 claims description 4
- RTAKQLTYPVIOBZ-UHFFFAOYSA-N tritert-butylalumane Chemical compound CC(C)(C)[Al](C(C)(C)C)C(C)(C)C RTAKQLTYPVIOBZ-UHFFFAOYSA-N 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 2
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- 238000010586 diagram Methods 0.000 description 9
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 238000000231 atomic layer deposition Methods 0.000 description 8
- 238000005229 chemical vapour deposition Methods 0.000 description 8
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- 238000001465 metallisation Methods 0.000 description 6
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 5
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- 229910052759 nickel Inorganic materials 0.000 description 5
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- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 4
- 125000003368 amide group Chemical group 0.000 description 4
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- 125000004429 atom Chemical group 0.000 description 3
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- 238000009792 diffusion process Methods 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 3
- 230000005012 migration Effects 0.000 description 3
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- UEXCJVNBTNXOEH-UHFFFAOYSA-N Ethynylbenzene Chemical group C#CC1=CC=CC=C1 UEXCJVNBTNXOEH-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
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- 238000004140 cleaning Methods 0.000 description 2
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- 239000001307 helium Substances 0.000 description 2
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- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 229910001092 metal group alloy Inorganic materials 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000006259 organic additive Substances 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 238000010301 surface-oxidation reaction Methods 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- CGHIBGNXEGJPQZ-UHFFFAOYSA-N 1-hexyne Chemical group CCCCC#C CGHIBGNXEGJPQZ-UHFFFAOYSA-N 0.000 description 1
- ZPPDMHPYGZZIID-UHFFFAOYSA-N C(C)[Co]C1C=CC=C1 Chemical compound C(C)[Co]C1C=CC=C1 ZPPDMHPYGZZIID-UHFFFAOYSA-N 0.000 description 1
- KSHBKZVIDAJCJJ-UHFFFAOYSA-N C[Co]C1C=CC=C1 Chemical compound C[Co]C1C=CC=C1 KSHBKZVIDAJCJJ-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910020639 Co-Al Inorganic materials 0.000 description 1
- 229910020675 Co—Al Inorganic materials 0.000 description 1
- 229910000914 Mn alloy Inorganic materials 0.000 description 1
- HAPVSOMXSKSUFV-UHFFFAOYSA-N N(=O)[Co] Chemical compound N(=O)[Co] HAPVSOMXSKSUFV-UHFFFAOYSA-N 0.000 description 1
- 229910004166 TaN Inorganic materials 0.000 description 1
- 239000007983 Tris buffer Substances 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- AUEPDNOBDJYBBK-UHFFFAOYSA-N [Si].[C-]#[O+] Chemical class [Si].[C-]#[O+] AUEPDNOBDJYBBK-UHFFFAOYSA-N 0.000 description 1
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- ZSEHKBVRLFIMPB-UHFFFAOYSA-N cobalt;cyclopenta-1,3-diene Chemical compound [Co].C=1C=C[CH-]C=1 ZSEHKBVRLFIMPB-UHFFFAOYSA-N 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
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- 239000011521 glass Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
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- 238000002791 soaking Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
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- 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
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- H01L21/76843—Barrier, adhesion or liner layers formed in openings in a dielectric
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- 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
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/283—Deposition of conductive or insulating materials for electrodes conducting electric current
- H01L21/285—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation
- H01L21/28506—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers
- H01L21/28512—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table
- H01L21/28556—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table by chemical means, e.g. CVD, LPCVD, PECVD, laser CVD
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- H01L23/53204—Conductive materials
- H01L23/53209—Conductive materials based on metals, e.g. alloys, metal silicides
- H01L23/53228—Conductive materials based on metals, e.g. alloys, metal silicides the principal metal being copper
- H01L23/53238—Additional layers associated with copper layers, e.g. adhesion, barrier, cladding layers
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- H01L23/522—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body
- H01L23/532—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body characterised by the materials
- H01L23/53204—Conductive materials
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- H01L23/53257—Conductive materials based on metals, e.g. alloys, metal silicides the principal metal being a refractory metal
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- H01L2221/1068—Formation and after-treatment of conductors
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- H01L2221/1084—Layers specifically deposited to enhance or enable the nucleation of further layers, i.e. seed layers
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Abstract
Description
Claims (15)
- 基板に構造を形成する方法であって、
前記基板に凹部を形成することと、
前記基板の露出面及び前記凹部の露出面の上にバリア層を形成することと、
前記バリア層の上に中間層を形成することと、
前記中間層の上に金属充填層を形成し、前記凹部を過充填することと、
前記バリア層、前記中間層、及び前記基板の上面を露出するため、前記金属充填層を平坦化することと、
前記金属充填層の上にコバルト層を選択的に形成することと、
前記コバルト層の少なくとも上面にコバルトアルミニウム合金層を選択的に形成するため、前記基板をアルミニウム含有前駆体に露出することと、
を含む方法。 - 前記コバルト層は、露出した前記バリア層と露出した前記中間層の上に延在する、請求項1に記載の方法。
- 前記アルミニウム含有前駆体は、ジメチルアルミニウムハイドライド(DMAH)、トリメチルアルミニウム(TMA)、トリエチルアルミニウム(TEA)、トリターシャリブチルアルミニウム(TTBA)、水素化アルミニウム(AlH3)、或いはこれらの組み合わせを含む、請求項1に記載の方法。
- 前記アルミニウム含有前駆体はジメチルアルミニウムハイドライド(DMAH)含む、請求項1に記載の方法。
- 前記中間層は、ライナー層と前記ライナー層の上に形成されたシード層を含み、前記ライナー層はルテニウム(Ru)を含み、前記シード層は銅を含む、請求項1に記載の方法。
- 前記シード層は、純銅、或いは、約0.1重量%から約10重量%の含有量のMnを有する銅マンガン(CuMn)合金である、請求項5に記載の方法。
- 前記コバルトアルミニウム合金層を、水素及び/又は窒素を含む環境で約100°Cから約500°Cまでの間の温度に保持することを更に含む、請求項1に記載の方法。
- 基板に構造を形成するための方法であって、
垂直面と水平面を有する凹部を前記基板に形成することと、
前記凹部の前記垂直面と前記水平面の上、並びに前記基板の上面にバリア層を形成することと、
前記バリア層の上にライナー層を形成することと、
前記ライナー層の上にシード層を形成することと、
電気メッキ処理を用いて前記シード層の上に金属充填層を形成することと、
前記金属充填層をリフローして前記凹部を部分的に充填するのに十分な温度まで、前記金属充填層を加熱することと、
前記凹部が前記金属充填層で過充填されるまで、前記シード層の上での金属充填層の形成と前記金属充填層の加熱を繰り返すことと、
前記バリア層、前記ライナー層、前記シード層、及び前記基板の前記上面を露出するため前記金属充填層を平坦化することと、
前記バリア層、前記ライナー層、前記シード層、及び前記金属充填層の上にコバルトキャップ層を選択的に形成することと、
前記コバルトキャップ層の上面にコバルトアルミニウム合金層を選択的に形成するため、前記基板をアルミニウム含有前駆体に露出することと
を含む方法。 - 前記アルミニウム含有前駆体は、ジメチルアルミニウムハイドライド(DMAH)、トリメチルアルミニウム(TMA)、トリエチルアルミニウム(TEA)、トリターシャリブチルアルミニウム(TTBA)、水素化アルミニウム(AlH3)、或いはこれらの組み合わせを含む、請求項8に記載の方法。
- 前記ライナー層はRuを含み、前記シード層は銅を含む、請求項8に記載の方法。
- 前記シード層が純銅である、請求項10に記載の方法。
- 前記シード層は、約0.1重量%から約10重量%の含有量のMnを有する銅マンガン(CuMn)合金である、請求項10に記載の方法。
- 半導体デバイスのための配線構造であって、
誘電体基板の厚みを通って形成された凹部を有する誘電体基板と、
凹部内に形成されたバリア層であって、前記凹部の露出面を覆うバリア層と、
前記バリア層の上に形成されたライナー層と、
前記ライナー層の上に形成されたシード層と、
前記シード層の上に形成され、前記凹部を充填する金属充填層であって、前記金属充填層の上面、前記シード層の上面、前記ライナー層の上面、前記バリア層の上面、及び前記誘電体基板の上面は同一平面上にある、金属充填層と、
前記金属充填層の前記上面、前記シード層の前記上面、前記ライナー層の前記上面、及び前記バリア層の前記上面に形成された、コバルトキャップ層と、
前記コバルトキャップ層の上面に形成されたコバルトアルミニウム合金層と、
を含む、半導体デバイスのための配線構造。 - 前記ライナー層はRuを含み、前記シード層は銅を含む、請求項13に記載の配線構造。
- 前記シード層は、純銅、或いは、約0.1重量%から約10重量%の含有量のMnを有する銅マンガン(CuMn)合金である、請求項13に記載の配線構造。
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KR20230020995A (ko) | 2020-06-04 | 2023-02-13 | 고쿠리츠 다이가쿠 호진 도호쿠 다이가쿠 | 반도체 디바이스 |
JP2023516860A (ja) * | 2020-07-23 | 2023-04-21 | アプライド マテリアルズ インコーポレイテッド | バックエンドオブライン用途のためのルテニウムライナおよびキャップ |
JP7498782B2 (ja) | 2020-07-23 | 2024-06-12 | アプライド マテリアルズ インコーポレイテッド | バックエンドオブライン用途のためのルテニウムライナおよびキャップ |
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US11990368B2 (en) | 2024-05-21 |
KR20230026514A (ko) | 2023-02-24 |
KR102662612B1 (ko) | 2024-05-03 |
WO2018063815A1 (en) | 2018-04-05 |
TW201827636A (zh) | 2018-08-01 |
CN109844930B (zh) | 2024-03-08 |
KR20190050869A (ko) | 2019-05-13 |
US20180096888A1 (en) | 2018-04-05 |
TWI723228B (zh) | 2021-04-01 |
US20220336271A1 (en) | 2022-10-20 |
JP6998945B2 (ja) | 2022-01-18 |
US11373903B2 (en) | 2022-06-28 |
CN109844930A (zh) | 2019-06-04 |
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