JP5274004B2 - 半導体基板内に導電性ビア構造体を製造する方法 - Google Patents
半導体基板内に導電性ビア構造体を製造する方法 Download PDFInfo
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- JP5274004B2 JP5274004B2 JP2007330072A JP2007330072A JP5274004B2 JP 5274004 B2 JP5274004 B2 JP 5274004B2 JP 2007330072 A JP2007330072 A JP 2007330072A JP 2007330072 A JP2007330072 A JP 2007330072A JP 5274004 B2 JP5274004 B2 JP 5274004B2
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- 229910052710 silicon Inorganic materials 0.000 abstract description 122
- 239000010703 silicon Substances 0.000 abstract description 121
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- 229910052751 metal Inorganic materials 0.000 description 46
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- 238000005240 physical vapour deposition Methods 0.000 description 7
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- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 5
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- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 5
- 239000010937 tungsten Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
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- 229910005540 GaP Inorganic materials 0.000 description 1
- 229910000673 Indium arsenide Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
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- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
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- 239000000284 extract Substances 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- 239000011521 glass Substances 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
- RPQDHPTXJYYUPQ-UHFFFAOYSA-N indium arsenide Chemical compound [In]#[As] RPQDHPTXJYYUPQ-UHFFFAOYSA-N 0.000 description 1
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- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910001930 tungsten oxide Inorganic materials 0.000 description 1
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- Engineering & Computer Science (AREA)
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Description
30:電気回路基板
40:チップ・レベル・パッケージ
41:シリコンICチップ
42、47、53:コンタクト・アレイ
43:シリコン・キャリア
44:多層金属層
45:シリコン基板
46:導電性貫通ビア
50:システム・レベル・パッケージ
51:基板
54:熱ハット
55:パッケージ・リッド
100、200、300、400、500、600:半導体ウェハ
101、601:環状トレンチ
102、602:内部コア
103、109、202、301、303、402、502、603、606:誘電体層(絶縁層)
104、201、302、401、501:ビア・ホール
105、204、304、403、503、608:バリア/接着層(又はライナ層)
106、206、306、409、607:導電性内部コア
107、205、305、408、504:金属層
110、208、308、411、507、604、609:金属パッド
111、209、309、412、508、610:C4はんだボール
150、250、350、450、550、650:貫通ビア
203、407:キャリア・ウェハ
404:犠牲材料
Claims (3)
- 半導体基板内に導電性ビア構造体を製造する方法であって、
前記半導体基板の第1表面上の開放端部と、その上に形成された絶縁層を有する内側側壁表面と、閉鎖端部とを含むビア・ホールを半導体基板内に形成するステップであって、前記閉鎖端部は、前記ビア・ホールの前記閉鎖端部の表面上に形成されたシード層を提供する第1導電性材料を有する、ステップと、
第2導電性材料で前記ビア・ホールを充填して、電気めっきプロセスを用いて導電性ビアを形成するステップであって、前記電気めっきプロセスにおいてめっきが前記ビア・ホールの前記閉鎖端部の前記表面上の前記シード層から始まり、前記ビア・ホールの前記開放端部の方向に進行するように、めっき電流が前記ビア・ホールの前記閉鎖端部の前記表面を通してのみ流される、ステップと、
前記導電性ビアの各々の端部への電気コンタクトを形成するステップと、
を含み、
前記ビア・ホールを形成する前記ステップは、
前記第1表面と前記第1表面の反対側の基板の第2表面とによって画定された前記基板の厚さより小さい、前記基板の前記第1表面の下方の深さdまで、前記半導体基板の前記第1表面内に環状トレンチをエッチングするステップであって、前記環状トレンチは、基板材料の内部コアを取り囲む、ステップと、
第1絶縁層を形成して、前記環状トレンチを充填し、かつ第1絶縁材料で前記基板の前記第1表面を覆うステップと、
前記基板の前記第1表面上に形成された前記第1絶縁層をパターン形成して、前記基板材料の内部コアを露出させるステップと、
前記基板の前記第1表面の下方の前記深さdまで前記基板材料の前記内部コアをエッチングして、前記ビア・ホールを形成するステップであって、前記側壁表面上の前記絶縁層は、前記第1絶縁材料によって形成され、前記ビア・ホールの前記閉鎖端部表面は、基板材料によって画定される、ステップと、
前記第1絶縁層及び前記閉鎖端部表面を覆って共形の導電性ライナを形成するステップであって、前記導電性ライナは、前記シード層として機能する前記第1導電性材料を含む、ステップとを含み、
前記ビア・ホールを充填する前記ステップは、
前記第1表面の反対側の前記半導体基板の前記第2表面上に電気コンタクトを形成するステップと、
前記めっき電流を前記電気コンタクトに印加して前記電気めっきプロセスを行い、銅材料で前記ビア・ホールを充填するステップと、
を含み、
前記第1絶縁層は、めっき電流が前記基板の前記第1表面及び前記基板の側壁を通って前記基板から流出することを妨げる、
方法。 - 前記基板の前記第2表面に凹部を設けて、前記側壁の絶縁層と前記ビア・ホールの前記閉鎖端部に形成された導電性ライナ層とを露出させるステップと、
前記基板の前記凹部が設けられた前記第2表面上に第2絶縁層を形成するステップと、
をさらに含む、請求項1に記載の方法。 - 前記導電性ビアは、前記第1表面と前記第1表面の反対側の前記基板の第2表面との間に延びる貫通ビア構造体であり、前記貫通ビア構造体の幅又は直径は、0.5ミクロンから10ミクロンまでであり、前記貫通ビア構造体の高さは、10ミクロンより小さい又は300ミクロンより大きい、請求項1又は2に記載の方法。
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-
2007
- 2007-01-05 US US11/620,423 patent/US7863189B2/en not_active Expired - Fee Related
- 2007-11-05 CN CN2007101658386A patent/CN101217118B/zh active Active
- 2007-12-21 JP JP2007330072A patent/JP5274004B2/ja not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US12004295B2 (en) | 2018-01-29 | 2024-06-04 | Corning Incorporated | Articles including metallized vias |
Also Published As
Publication number | Publication date |
---|---|
US20080164573A1 (en) | 2008-07-10 |
CN101217118A (zh) | 2008-07-09 |
US7863189B2 (en) | 2011-01-04 |
CN101217118B (zh) | 2011-10-12 |
JP2008172223A (ja) | 2008-07-24 |
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