JP5027431B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP5027431B2 JP5027431B2 JP2006071089A JP2006071089A JP5027431B2 JP 5027431 B2 JP5027431 B2 JP 5027431B2 JP 2006071089 A JP2006071089 A JP 2006071089A JP 2006071089 A JP2006071089 A JP 2006071089A JP 5027431 B2 JP5027431 B2 JP 5027431B2
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- semiconductor device
- uppermost layer
- layer wiring
- wiring
- film
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- 239000004065 semiconductor Substances 0.000 title claims description 109
- 239000010410 layer Substances 0.000 claims description 177
- 239000003990 capacitor Substances 0.000 claims description 94
- 239000000758 substrate Substances 0.000 claims description 70
- 239000011229 interlayer Substances 0.000 claims description 24
- 230000015572 biosynthetic process Effects 0.000 claims description 12
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000010408 film Substances 0.000 description 133
- 102100038742 Cytochrome P450 2A13 Human genes 0.000 description 132
- 101000957389 Homo sapiens Cytochrome P450 2A13 Proteins 0.000 description 132
- LFERELMXERXKKQ-KMXXXSRASA-N Fenugreekine Chemical compound NC(=O)C1=CC=CC([C@H]2[C@@H]([C@H](O)[C@@H](COP(O)(=O)OP(O)(=O)OC[C@@H]3[C@H]([C@@H](O)[C@@H](O3)N3C4=NC=NC(N)=C4N=C3)O)O2)O)=N1 LFERELMXERXKKQ-KMXXXSRASA-N 0.000 description 129
- 239000013039 cover film Substances 0.000 description 54
- 238000000034 method Methods 0.000 description 48
- 229910000679 solder Inorganic materials 0.000 description 31
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 24
- 229910052710 silicon Inorganic materials 0.000 description 24
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- BVKSYBQAXBWINI-LQDRYOBXSA-N (2s)-2-[[(2s)-2-[[(2s)-2-[[(2s)-2-[[(2s)-2-[[(2s)-6-amino-2-[[(2s)-2-amino-5-(diaminomethylideneamino)pentanoyl]amino]hexanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-3-hydroxypropanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]propanoy Chemical compound OC(=O)CC[C@@H](C(O)=O)NC(=O)[C@H](C)NC(=O)[C@H](CCCN=C(N)N)NC(=O)[C@H](CO)NC(=O)[C@H](CCCN=C(N)N)NC(=O)[C@H](CCCCN)NC(=O)[C@@H](N)CCCN=C(N)N BVKSYBQAXBWINI-LQDRYOBXSA-N 0.000 description 5
- 229910052814 silicon oxide Inorganic materials 0.000 description 5
- 229910052718 tin Inorganic materials 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 238000002161 passivation Methods 0.000 description 4
- 229920001721 polyimide Polymers 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- 229910008599 TiW Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 229910052702 rhenium Inorganic materials 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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Description
半導体基板と、
前記半導体基板上に設けられた層間絶縁膜と、
前記層間絶縁膜中に埋設された多層配線と、
前記多層配線中の最上層配線の上面に対向して設けられ、外部接続用のバンプ電極が搭載される電極パッドと、
前記層間絶縁膜上および前記最上層配線上を被覆する有機樹脂膜からなる第一絶縁膜と、
を含み、
前記最上層配線と、前記最上層配線と前記電極パッドとの間に設けられた領域の前記第一絶縁膜で構成される容量絶縁膜と、前記電極パッドとから構成された容量素子を備える半導体装置が提供される。
図1は、本実施形態における半導体装置の構成を示す断面図である。
まず、所定の半導体素子、配線、または回路が形成されたシリコン基板101上に層間膜103を形成し、層間膜中に最上層配線105を形成する。最上層配線105は、たとえば、Al、Cu、またこれらの合金により構成される層と、Ti、TiN、TiW、TaまたはTaN等により構成される層との積層膜とする。
図2は、本実施形態の半導体装置の構成を示す断面図である。
第一の実施形態に記載の方法を用いて、最上層配線105上のカバー膜107を形成する。その後、容量素子130の形成領域において、最上層配線105上のカバー膜107を選択的に除去して開口させる。本実施形態では、この開口の際に、図11を参照して前述した半導体装置におけるPADVIA217の形成方法を用いて、カバー膜107を貫通するPADVIA117を形成し、最上層配線105の上面を露出させる。
以上の実施形態において、容量素子を構成する最上層配線と電極パッドとが、異なる電源電位にそれぞれ接続された構成としてもよい。
第一の実施形態において前述した方法を用いて、シリコン基板101上に、ハンダボール113の形成までを行う。最上層配線105は、第一電源電位に接続される。また、基板側PAD123が設けられた基板121を準備する。なお、基板側PAD123は、たとえば第一電源電位と異なる第二電源電位に接続される。
以上の実施形態において、F/CPAD111下部全体に、単一の最上層配線が存在する構成とすることができる。
本実施形態は、第一の実施形態において、F/CPAD111の下部に複数の最上層配線が設けられ、そのうち特定の配線上だけに選択的に容量を形成する態様に関する。
本実施形態は、第一の実施形態のF/CPAD111の最上層配線が、異電位の複数の電源配線、もしくは信号配線、またはそれらの組み合わせである態様に関する。
第六の実施形態において、最上層配線127および最上層配線129と異なる第三電源電位にF/CPAD111を基板側で接続してもよい。第三電源電位は、たとえば、GNDとすることができる。
第六の実施形態において、F/CPAD111をOPEN、つまりF/CPAD111が基板121側の基板側PAD123と接続しない構成としてもよい。
本実施形態は、第二の実施形態のF/CPAD111下に複数の最上層配線が存在し、F/CPAD111と接続する配線と、容量を形成する配線とが設けられた構成に関する。F/CPAD111下の最上層配線は、異電位の複数の電源配線、もしくは信号配線、またはそれらの組み合わせであり、そのうちのどれかに対して選択的に容量形成および接続する。
シリコン基板101上に最上層配線127および最上層配線129を形成するまでは、第六の実施形態と同様である。次に、カバー膜107を形成する。
101 シリコン基板
103 層間膜
105 最上層配線
107 カバー膜
109 容量膜
110 容量素子
111 F/CPAD
113 ハンダボール
115 開口領域
117 PADVIA
119 容量膜
120 半導体装置
121 基板
123 基板側PAD
125 最上層配線
127 最上層配線
129 最上層配線
130 容量素子
131 F/CPAD
Claims (12)
- 半導体基板と、
前記半導体基板上に設けられた層間絶縁膜と、
前記層間絶縁膜中に埋設された多層配線と、
前記多層配線中の最上層配線の上面に対向して設けられ、外部接続用のバンプ電極が搭載される電極パッドと、
前記層間絶縁膜上および前記最上層配線上を被覆する有機樹脂膜からなる第一絶縁膜と、
を含み、
前記最上層配線と、前記最上層配線と前記電極パッドとの間に設けられた領域の前記第一絶縁膜で構成される容量絶縁膜と、前記電極パッドとから構成された容量素子を備える半導体装置。 - 請求項1に記載の半導体装置において、
前記電極パッドに接合されたバンプ電極をさらに含む半導体装置。 - 請求項1または2に記載の半導体装置において、
前記最上層配線の上面に対向する領域において、前記第一絶縁膜に凹部が設けられ、
前記電極パッドが、前記凹部の内壁を覆うとともに、前記凹部の外部に延出する姿態で設けられた半導体装置。 - 請求項3に記載の半導体装置において、
前記凹部の形成領域において、前記第一絶縁膜が薄化されており、
薄化された前記第一絶縁膜が前記容量絶縁膜を構成している半導体装置。 - 請求項3に記載の半導体装置において、
前記凹部が、前記第一絶縁膜を貫通する貫通孔であって、
前記貫通孔の内壁を被覆する第二絶縁膜を有し、
前記第二絶縁膜上に前記電極パッドが設けられた半導体装置。 - 請求項5に記載の半導体装置において、前記第二絶縁膜が、高誘電率膜である半導体装置。
- 請求項1乃至6いずれかに記載の半導体装置において、
前記容量素子を構成する前記最上層配線が、電源配線または接地配線である半導体装置。 - 請求項1乃至6いずれかに記載の半導体装置において、
前記容量素子を構成する前記最上層配線が、信号配線である半導体装置。 - 請求項1乃至6いずれかに記載の半導体装置において、
前記半導体基板がフリップ接続される基板をさらに含み、
前記電極パッドが、前記基板に設けられた電源配線または接地配線に接続された半導体装置。 - 請求項1乃至6いずれかに記載の半導体装置において、
前記容量素子を構成する前記最上層配線と前記電極パッドとが、異なる電源電位にそれぞれ接続された半導体装置。 - 請求項1乃至6いずれかに記載の半導体装置において、
一つの前記電極パッドに対向する前記最上層配線が、第一最上層配線と第二最上層配線とを含み、
前記電極パッドと前記第一最上層配線が第一容量素子を構成するとともに、
前記電極パッドと前記第二最上層配線が第二容量素子を構成する半導体装置。 - 請求項1乃至6いずれかに記載の半導体装置において、
一つの前記電極パッドに対向する前記最上層配線が、第一最上層配線と第二最上層配線とを含み、
前記電極パッドと前記第一最上層配線が前記容量素子を構成するとともに、
前記電極パッドと前記第二最上層配線とが電気的に接続された半導体装置。
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TW096107851A TWI400789B (zh) | 2006-03-15 | 2007-03-07 | 半導體裝置 |
KR1020070024118A KR100804596B1 (ko) | 2006-03-15 | 2007-03-12 | 반도체장치 |
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