JP5138611B2 - 接合用の隣接収納部を有する半導体相互接続、及び形成方法 - Google Patents
接合用の隣接収納部を有する半導体相互接続、及び形成方法 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims description 66
- 238000000034 method Methods 0.000 title claims description 25
- 229910052751 metal Inorganic materials 0.000 claims description 64
- 239000002184 metal Substances 0.000 claims description 64
- 239000000758 substrate Substances 0.000 claims description 23
- 238000005530 etching Methods 0.000 claims description 17
- 230000004888 barrier function Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 13
- 230000001590 oxidative effect Effects 0.000 claims description 7
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 2
- 229910052715 tantalum Inorganic materials 0.000 claims description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 2
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 claims description 2
- 239000004020 conductor Substances 0.000 claims 2
- 239000010410 layer Substances 0.000 description 142
- 235000012431 wafers Nutrition 0.000 description 21
- 230000008569 process Effects 0.000 description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 9
- 229910052799 carbon Inorganic materials 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 7
- 239000013626 chemical specie Substances 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000003989 dielectric material Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 238000001020 plasma etching Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 125000006850 spacer group Chemical group 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
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000577 Silicon-germanium Inorganic materials 0.000 description 1
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 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
- 238000004380 ashing Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- UBHZUDXTHNMNLD-UHFFFAOYSA-N dimethylsilane Chemical compound C[SiH2]C UBHZUDXTHNMNLD-UHFFFAOYSA-N 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- UIUXUFNYAYAMOE-UHFFFAOYSA-N methylsilane Chemical compound [SiH3]C UIUXUFNYAYAMOE-UHFFFAOYSA-N 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- PQDJYEQOELDLCP-UHFFFAOYSA-N trimethylsilane Chemical compound C[SiH](C)C PQDJYEQOELDLCP-UHFFFAOYSA-N 0.000 description 1
- 229940094989 trimethylsilane Drugs 0.000 description 1
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Description
Claims (3)
- 被覆素子層を有した基板を設ける工程と、
複数の素子を基板の内部かつ前記被覆素子層の内部に形成する工程と、
一つ以上の相互接続層を前記被覆素子層の上に形成する工程と、
誘電体層を、前記一つ以上の相互接続層の内の最上部にある相互接続層の上面を取り囲むように形成する工程と、
開口部を前記誘電体層の中に形成する工程であって、前記開口部を誘電体層の中に形成する結果、前記誘電体層には前記開口部が形成されるとともに、開口部の側壁の一部分に沿って前記誘電体層の改質部分が形成される、前記開口部を誘電体層の中に形成する工程と、
前記開口部に導電材料を充填する工程と、
前記誘電体層の露出部分を除去して、誘電体層よりも上に延びる導電材料の突出パッドを形成する工程と、
前記誘電体層の改質部分を除去することによって前記誘電体層に収納開口部を突出パッドに隣接して形成する工程とを備える、半導体デバイスの製造方法。 - 前記開口部を形成する工程では更に、
パターニング済みマスク層を誘電体層上の絶縁キャップ層の上に設ける工程と、
誘電体層及び絶縁キャップ層をエッチングする工程と、
パターニング済みマスク層をプラズマ雰囲気中の酸化性化学種に曝露して除去する工程と、
前記収納開口部のサイズを制御すべく前記誘電体層の改質部分の大きさを決定するために、パターニング済みマスク層の除去を制御する工程とを備える、請求項1記載の方法。 - 基板と、
基板の上の素子層と、
基板及び素子層の内部に形成される複数の素子と、
素子層の上の一つ以上の相互接続層と、
一つ以上の相互接続層の内の最上部にある相互接続層の上面を取り囲む誘電体層と、
前記誘電体層に設けられた開口部と、
前記開口部に設けられるとともに前記誘電体層の上面を越えて上方に延びる突出パッドとを備え、
前記突出パッドは、収納開口部をもって前記誘電体層から分離されているとともに、バリア層であって前記突出パッドの側壁を画定し、かつタンタル、窒化タンタル、窒化チタン、またはこれらの材料の組み合わせからなるバリア層と前記バリア層の内部に設けられた金属層とからなる、半導体デバイス。
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US8796822B2 (en) * | 2011-10-07 | 2014-08-05 | Freescale Semiconductor, Inc. | Stacked semiconductor devices |
JP2016018879A (ja) * | 2014-07-08 | 2016-02-01 | 株式会社東芝 | 半導体装置および半導体装置の製造方法 |
US10636767B2 (en) * | 2016-02-29 | 2020-04-28 | Invensas Corporation | Correction die for wafer/die stack |
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US5739579A (en) * | 1992-06-29 | 1998-04-14 | Intel Corporation | Method for forming interconnections for semiconductor fabrication and semiconductor device having such interconnections |
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