JP2007019188A - 半導体集積回路装置およびその製造方法 - Google Patents
半導体集積回路装置およびその製造方法 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 104
- 238000004519 manufacturing process Methods 0.000 title claims description 47
- 239000011229 interlayer Substances 0.000 claims abstract description 122
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- 238000000034 method Methods 0.000 claims abstract description 79
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- 229910052751 metal Inorganic materials 0.000 claims description 40
- 239000002184 metal Substances 0.000 claims description 40
- 239000010949 copper Substances 0.000 claims description 31
- 229920001721 polyimide Polymers 0.000 claims description 19
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000004642 Polyimide Substances 0.000 claims 1
- 239000011347 resin Substances 0.000 claims 1
- 229920005989 resin Polymers 0.000 claims 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 abstract description 8
- 238000009792 diffusion process Methods 0.000 abstract description 5
- 229920002120 photoresistant polymer Polymers 0.000 description 51
- 238000005530 etching Methods 0.000 description 26
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 21
- 229910052814 silicon oxide Inorganic materials 0.000 description 21
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 16
- 239000000945 filler Substances 0.000 description 16
- 230000006870 function Effects 0.000 description 10
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- 238000000151 deposition Methods 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 4
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 3
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- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000004380 ashing Methods 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 239000003870 refractory metal Substances 0.000 description 2
- 229910021332 silicide Inorganic materials 0.000 description 2
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 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
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000006117 anti-reflective coating Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000000576 coating method Methods 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
- 230000008021 deposition Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000001579 optical reflectometry Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
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- 229910052719 titanium Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
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Abstract
【解決手段】 第4層配線54およびヒューズ55の上層にバリア絶縁膜56と層間絶縁膜57とを堆積する。バリア絶縁膜56は、Cuの拡散を防ぐための絶縁膜であり、下層のバリア絶縁膜44と同じく、プラズマCVD法で堆積したSiCN膜で構成する。ヒューズ55を覆うバリア絶縁膜56の膜厚は、下層のバリア絶縁膜44よりも大きく、ヒューズ55の耐湿性が向上するようになっている。
【選択図】 図22
Description
本実施の形態は、例えば、4層Cu配線とヒューズとを有する半導体集積回路装置であり、その製造方法を図1〜図26を用いて工程順に説明する。
前記実施の形態1では、層間絶縁膜にビアホールを形成した後、配線溝を形成する場合について説明したが、本実施の形態では、層間絶縁膜に配線溝を形成した後、ビアホールを形成する場合について説明する。
2 素子分離溝
3 酸化シリコン膜
4 p型ウエル
5 n型ウエル
6 ゲート絶縁膜
7 ゲート電極
8 サイドウォールスペーサ
9 Coシリサイド膜
11 n型半導体領域(ソース、ドレイン)
12 p型半導体領域(ソース、ドレイン)
13 エッチングストッパ膜
14 絶縁膜
15 コンタクトホール
16 プラグ
17 絶縁膜(SiOC膜)
18 絶縁膜
19 第1層配線
20 配線溝
21、22 バリア絶縁膜
23 層間絶縁膜
24 絶縁膜
25 反射防止膜
26 フォトレジスト膜
27 ビアホール
28 埋め込み剤
30 反射防止膜
31 フォトレジスト膜
32 配線溝
33 第2層配線
34 バリア絶縁膜
35 層間絶縁膜
36 反射防止膜
37 フォトレジスト膜
38 ビアホール
39 埋め込み剤
40 反射防止膜
41 フォトレジスト膜
42 配線溝
43 第3層配線
44 バリア絶縁膜
45 層間絶縁膜
46 ストッパ膜
47 反射防止膜
48 フォトレジスト膜
49 ビアホール
50 埋め込み剤
51 フォトレジスト膜
52、53 配線溝
54 第4層配線
55 ヒューズ
56 バリア絶縁膜
57 層間絶縁膜
58 スルーホール
59 プラグ
60 最上層配線(第5層配線)
60B ボンディングパッド
61 表面保護膜
62 開口
63 ポリイミド樹脂膜
64 引き出し配線
65 ポリイミド樹脂膜
66 Au膜
67 半田バンプ
Qn:nチャネル型MISFET
Qp:pチャネル型MISFET
Claims (10)
- 半導体基板の主面上に形成された第1層間絶縁膜と、
前記第1層間絶縁膜に形成された第1配線溝の内部に埋め込まれた第1配線と、
前記第1配線上を覆う第1バリア絶縁膜を介して前記第1層間絶縁膜上に形成された第2層間絶縁膜と、
前記第2層間絶縁膜に形成された第2配線溝の内部に埋め込まれたヒューズと、
前記第2層間絶縁膜に形成された第3配線溝の内部に埋め込まれた第2配線と、
前記ヒューズ上および前記第2配線上を覆う第2バリア絶縁膜と、
前記第2バリア絶縁膜上に第1絶縁膜を介して形成された最上層配線と、
前記最上層配線上を覆う表面保護膜とを有し、
前記第2バリア絶縁膜の膜厚は、前記第1バリア絶縁膜の膜厚よりも大きく、
前記ヒューズの上部の前記第1絶縁膜および前記表面保護膜には、前記第2バリア絶縁膜の表面に達する第1開口が設けられていることを特徴とする半導体集積回路装置。 - 前記第1および第2配線と前記ヒューズとは、銅を主体とする金属膜で構成され、前記第1および第2バリア絶縁膜は、SiCN膜で構成されていることを特徴とする請求項1記載の半導体集積回路装置。
- 前記最上層配線は、アルミニウムを主体とする金属膜で構成されていることを特徴とする請求項1記載の半導体集積回路装置。
- 前記表面保護膜上に形成された第1ポリイミド樹脂膜と、前記第1ポリイミド樹脂膜上に形成され、前記最上層配線に電気的に接続された引き出し配線と、前記引き出し配線を覆う第2ポリイミド樹脂膜と、前記第2ポリイミド樹脂膜の一部から露出する前記引き出し配線上に形成された外部接続端子とをさらに有することを特徴とする請求項1記載の半導体集積回路装置。
- 前記引き出し配線は、銅を主体とする金属膜で構成されていることを特徴とする請求項4記載の半導体集積回路装置。
- 以下の工程を含む半導体集積回路装置の製造方法:
(a)半導体基板の主面上に第1層間絶縁膜に形成し、前記第1層間絶縁膜に第1配線溝を形成する工程、
(b)前記第1配線溝の内部を含む前記第1層間絶縁膜上に第1金属膜を形成した後、前記第1配線溝の外部の前記第1金属膜を化学的機械研磨法で除去することにより、前記第1配線溝の内部に前記第1金属膜からなる第1配線を形成する工程、
(c)前記第1配線の上部を含む前記第1層間絶縁膜上に第1バリア絶縁膜を形成する工程、
(d)前記第1バリア絶縁膜上に第2層間絶縁膜を形成し、前記第2層間絶縁膜に第2および第3配線溝を形成する工程、
(e)前記第2および第3配線溝の内部を含む前記第2層間絶縁膜上に第2金属膜を形成した後、前記第2および第3配線溝の外部の前記第2金属膜を化学的機械研磨法で除去することにより、前記第2配線溝の内部に前記第2金属膜からなるヒューズを形成し、前記第3配線溝の内部に前記第2金属膜からなる第2配線を形成する工程、
(f)前記第2配線および前記ヒューズの上部を含む前記第2層間絶縁膜上に、前記第1バリア絶縁膜よりも厚い膜厚を有する第2バリア絶縁膜を形成する工程、
(g)前記第2バリア絶縁膜上に第1絶縁膜を形成し、前記第1絶縁膜上に最上層配線を形成する工程、
(h)前記ヒューズの上部の前記第1絶縁膜および前記表面保護膜に、前記第2バリア絶縁膜の表面に達する第1開口を形成し、前記最上層配線の上部の前記第1絶縁膜および前記表面保護膜に、前記最上層配線に達する第2開口を形成する工程。 - 前記第1および第2配線と前記ヒューズとを銅を主体とする金属膜で構成し、前記第1および第2バリア絶縁膜をSiCN膜で構成することを特徴とする請求項6記載の半導体集積回路装置の製造方法。
- 前記最上層配線をアルミニウムを主体とする金属膜で構成することを特徴とする請求項6記載の半導体集積回路装置の製造方法。
- 前記工程(h)の後、さらに、
(i)前記最上層配線の上部を含む前記表面保護膜上に第1ポリイミド樹脂膜を形成した後、前記第1ポリイミド樹脂膜上に引き出し配線を形成し、前記引き出し配線と前記最上層配線とを電気的に接続する工程、
(j)前記引き出し配線の上部を含む前記第1ポリイミド樹脂膜上に第2ポリイミド樹脂膜を形成した後、前記第2ポリイミド樹脂膜の一部から露出する前記引き出し配線上に外部接続端子を形成する工程、
を含むことを特徴とする請求項6記載の半導体集積回路装置の製造方法。 - 前記引き出し配線を銅を主体とする金属膜で構成することを特徴とする請求項9記載の半導体集積回路装置の製造方法。
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JP2005197939A JP2007019188A (ja) | 2005-07-06 | 2005-07-06 | 半導体集積回路装置およびその製造方法 |
US11/453,897 US7419901B2 (en) | 2005-07-06 | 2006-06-16 | Semiconductor device and a method of manufacturing the same |
TW095122398A TW200707646A (en) | 2005-07-06 | 2006-06-22 | Semiconductor device and a method of manufacturing the same |
CNB2006100957511A CN100573871C (zh) | 2005-07-06 | 2006-07-04 | 半导体器件及其制造方法 |
US12/102,532 US7602040B2 (en) | 2005-07-06 | 2008-04-14 | Semiconductor device and a method of manufacturing the same |
US12/564,043 US7968966B2 (en) | 2005-07-06 | 2009-09-21 | Semiconductor device with fuse and a method of manufacturing the same |
US13/071,546 US8269309B2 (en) | 2005-07-06 | 2011-03-25 | Semiconductor device with a fuse formed by a damascene technique and a method of manufacturing the same |
US13/597,129 US8686538B2 (en) | 2005-07-06 | 2012-08-28 | Semiconductor device with a fuse formed by a damascene technique and a method of manufacturing the same |
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US8269309B2 (en) | 2012-09-18 |
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US7968966B2 (en) | 2011-06-28 |
US20070026664A1 (en) | 2007-02-01 |
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US20120319235A1 (en) | 2012-12-20 |
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