JP2021044497A - 半導体装置の製造方法 - Google Patents
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 138
- 238000000034 method Methods 0.000 title claims abstract description 56
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 44
- 239000000758 substrate Substances 0.000 claims abstract description 61
- 238000005530 etching Methods 0.000 claims abstract description 21
- 239000007789 gas Substances 0.000 claims description 27
- 230000015572 biosynthetic process Effects 0.000 claims description 13
- 238000005268 plasma chemical vapour deposition Methods 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 3
- 238000009413 insulation Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 description 30
- 239000010410 layer Substances 0.000 description 27
- 239000012790 adhesive layer Substances 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 150000003377 silicon compounds Chemical class 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 230000014509 gene expression Effects 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000010030 laminating Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000001020 plasma etching Methods 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
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Abstract
Description
第1実施形態は、半導体装置の製造方法に関する。図1に半導体装置100の断面図を示す。図2に第1実施形態の半導体装置100の製造方法のフローチャートを示す。図3から図6に半導体装置100の工程断面図を示す。半導体装置100は、より具体的には、NANDフラッシュメモリチップ等の記憶装置である。
第2実施形態は、半導体装置の製造方法に関する。第2実施形態は、第1実施形態の半導体装置の製造方法の変形例である。第2実施形態においては、第2絶縁膜2を成膜してから第1絶縁膜1を成膜することが第1実施形態の半導体装置の製造方法と異なる。第1実施形態と第2実施形態において、共通する構成、製造方法については、その説明を省略する。なお、第2実施形態では、エッチング前のビアホールVHと配線回路31の間には、STI膜20ではなく、絶縁膜32が位置している。
第3実施形態は、半導体装置の製造方法に関する。第3実施形態は、第1実施形態の半導体装置の製造方法の変形例である。第3実施形態においては、第2絶縁膜2を成膜してからさらに第1絶縁膜1を成膜することが第1実施形態の半導体装置の製造方法と異なる。第3実施形態と第2実施形態において、共通する構成、製造方法については、その説明を省略する。
第4実施形態は、半導体装置の製造方法に関する。第4実施形態は、第2実施形態の半導体装置の製造方法の変形例である。第4実施形態においては、第1絶縁膜1を成膜してからさらに第2絶縁膜2を成膜することが第2実施形態の半導体装置の製造方法と異なる。第4実施形態と第2実施形態において、共通する構成、製造方法については、その説明を省略する。第4実施形態においては、半導体層30の半導体基板10の第2面側の表面の一部に配線回路31が露出している。
Claims (7)
- 第1面と前記第1面の反対側にある第2面を有し、前記第2面側には配線回路を含む回路基板が設けられ、前記第1面から第2面に向かってビアホールを有する半導体基板の前記ビアホール内と前記第1面側に被覆性が良い第1絶縁膜を成膜する工程と、
前記ビアホール内と前記第1面側に被覆性の悪い第2絶縁膜を成膜する工程と、
前記ビアホールの底部の前記第1絶縁膜、又は、前記ビアホール内の底部の第1絶縁膜及び前記ビアホール内の底部の第2絶縁膜を異方性エッチングにより除去する工程と、
を含む半導体装置の製造方法。 - 前記第1絶縁膜は、250℃以下でプラズマCVD法により成膜され、
前記第2絶縁膜は、250℃以下でプラズマCVD法により成膜される請求項1に記載の半導体装置の製造方法。 - 前記ビアホールのアスペクト比(ビアホール深さ/ビア径)は、2.8未満である請求項1又は2に記載の半導体装置の製造方法。
- 前記ビアホールのビア径は、10μm以上である請求項1ないし3のいずれか1項に記載の半導体装置の製造方法。
- 前記第1絶縁膜は、オルトケイ酸テトラエチルガス、酸素含有ガス及びNH基含有ガスを含む雰囲気で成膜され、
前記第2絶縁膜は、モノシランガス、酸素含有ガス及びNH基含有ガスを含む雰囲気で成膜され、
前記オルトケイ酸テトラエチルガスと前記モノシランガスの供給量を変えることによって、前記第1絶縁膜と前記第2絶縁膜の成膜を切り替える請求項1ないし4のいずれか1項に記載の半導体装置の製造方法。 - 前記第1絶縁膜は前記半導体基板と接し、前記第2絶縁膜は、前記第1絶縁膜の前記半導体基板と接した面とは反対側の面と接し、又は、
前記第2絶縁膜は前記半導体基板と接し、前記第1絶縁膜は、前記第2絶縁膜の前記半導体基板と接した面とは反対側の面と接する請求項1ないし5のいずれか1項に記載の半導体装置の製造方法。 - 前記第1絶縁膜と第2絶縁膜は、交互に成膜され、
前記第1絶縁膜又は/及び前記第2絶縁膜は、2層以上成膜される請求項1ないし6のいずれか1項に記載の半導体装置の製造方法。
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JP2019167317A JP7278184B2 (ja) | 2019-09-13 | 2019-09-13 | 半導体装置の製造方法 |
TW109100444A TWI722754B (zh) | 2019-09-13 | 2020-01-07 | 半導體裝置之製造方法 |
CN202010026512.0A CN112509925B (zh) | 2019-09-13 | 2020-01-10 | 半导体装置的制造方法 |
US16/807,025 US11164775B2 (en) | 2019-09-13 | 2020-03-02 | Method of manufacturing semiconductor device |
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JP2006032695A (ja) * | 2004-07-16 | 2006-02-02 | Sanyo Electric Co Ltd | 半導体装置の製造方法 |
JP2010161215A (ja) * | 2009-01-08 | 2010-07-22 | Sharp Corp | 半導体装置及びその製造方法 |
JP2013157540A (ja) * | 2012-01-31 | 2013-08-15 | Toshiba Corp | 半導体装置およびその製造方法 |
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JPH09260492A (ja) * | 1996-03-25 | 1997-10-03 | Toshiba Corp | 半導体装置の製造方法 |
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