JP5782232B2 - 半導体構造体の製造方法 - Google Patents
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- JP5782232B2 JP5782232B2 JP2010129210A JP2010129210A JP5782232B2 JP 5782232 B2 JP5782232 B2 JP 5782232B2 JP 2010129210 A JP2010129210 A JP 2010129210A JP 2010129210 A JP2010129210 A JP 2010129210A JP 5782232 B2 JP5782232 B2 JP 5782232B2
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- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76801—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
- H01L21/76802—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics
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- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76838—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the conductors
- H01L21/76841—Barrier, adhesion or liner layers
- H01L21/76843—Barrier, adhesion or liner layers formed in openings in a dielectric
- H01L21/76847—Barrier, adhesion or liner layers formed in openings in a dielectric the layer being positioned within the main fill metal
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- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
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- H01L21/76841—Barrier, adhesion or liner layers
- H01L21/7685—Barrier, adhesion or liner layers the layer covering a conductive structure
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- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76897—Formation of self-aligned vias or contact plugs, i.e. involving a lithographically uncritical step
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- H01L23/528—Geometry or layout of the interconnection structure
- H01L23/5286—Arrangements of power or ground buses
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- H01L23/532—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body characterised by the materials
- H01L23/53204—Conductive materials
- H01L23/53209—Conductive materials based on metals, e.g. alloys, metal silicides
- H01L23/53214—Conductive materials based on metals, e.g. alloys, metal silicides the principal metal being aluminium
- H01L23/53223—Additional layers associated with aluminium layers, e.g. adhesion, barrier, cladding layers
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- H01L23/522—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body
- H01L23/532—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body characterised by the materials
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- H01L23/53228—Conductive materials based on metals, e.g. alloys, metal silicides the principal metal being copper
- H01L23/53238—Additional layers associated with copper layers, e.g. adhesion, barrier, cladding layers
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- H01L23/52—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames
- H01L23/522—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body
- H01L23/532—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body characterised by the materials
- H01L23/53204—Conductive materials
- H01L23/53209—Conductive materials based on metals, e.g. alloys, metal silicides
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- H01L23/52—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames
- H01L23/522—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body
- H01L23/532—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body characterised by the materials
- H01L23/53204—Conductive materials
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
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- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Description
101、201:基板
102、202:半導体デバイス
111、211、214、232:層間誘電体層(ILD層)
112、212:導電性スタッド
121、213、221、241:導電性ライナ
122、222、301、302:導電性パス
131、231:誘電体キャッピング層
233、251、256:ビア孔
242:導電性ビア
291:レジスト層
292:ビア・パターン
300:電力グリッド
311:交差点
501:ビア孔の組
502:SEM図
Claims (8)
- 第1の誘電体層の内部に導電性スタッドを形成するステップと、
前記第1の誘電体層の上に第2の誘電体層を形成するステップと、
前記第2の誘電体層の内部に1つ又は複数の導電性パスを形成するステップであって、前記1つ又は複数の導電性パスは、前記導電性スタッドの上面の上に残っている前記第2の誘電体層の領域に接している、ステップと、
前記導電性スタッドの前記上面の上にビア孔を形成し、前記導電性スタッドの前記上面を露出させるステップであって、前記ビア孔は、前記1つ又は複数の導電性パスの側壁の少なくとも一部を露出させる、ステップと、
前記ビア孔の底部及び側壁において導電性ライナを堆積させるステップと、
前記ビア孔内に導電性材料を堆積してビアを形成するステップであって、前記ビアは前記導電性ライナを介して前記1つ又は複数の導電性パスと接触した状態にある、ステップと、を含み、
前記1つ又は複数の導電性パスは、前記誘電体層と、前記誘電体層上の第2の誘電体層との間に形成される、
半導体構造体の製造方法。 - 前記導電性スタッドを形成するステップは、前記第1の誘電体層の下にある半導体基板内に生成された半導体デバイスのコンタクト位置の上に、前記コンタクトと接触した上に前記導電性スタッドを形成するステップを含む、請求項1に記載の方法。
- 前記ビア孔内に前記導電性材料を堆積させるステップは、前記導電性ライナの導電率より小さい導電率を有する前記導電性材料を選択するステップと、前記ビア孔内に前記選択された導電性材料を堆積させるステップとを含む、請求項1に記載の方法。
- 前記1つ又は複数の導電性パス及び前記第2の誘電体層の上に第3の誘電体層を堆積させるステップをさらに含み、前記ビア孔を形成するステップは、前記第3の誘電体層及び前記第2の誘電体層内に前記ビア孔を形成するステップをさらに含む、請求項1に記載の方法。
- 前記ビア孔を形成するステップは、前記第3の誘電体層内に前記ビア孔の部分を形成するステップをさらに含み、前記第3の誘電体層内の前記ビア孔の前記部分は、前記導電性スタッドの前記上面の上に残っている前記第2の誘電体層の前記部分と少なくとも同じくらい大きく、かつ、これと実質的に重なり、前記導電性スタッドの前記上面の上に残っている前記第2の誘電体層の前記部分は、前記ビア孔を形成する際に除去される、請求項1に記載の方法。
- 前記導電性スタッドの前記上面の上の前記領域は、前記導電性材料で作製された前記ビアのブレック長さより短い横方向寸法を有し、前記ブレック長さは、前記ビアの内部の電流密度が20mA/μm2であるときのブレック長さであり、前記横方向寸法は、前記ビアの互いに対向する2つの前記側壁の水平方向間隔である、請求項1に記載の方法。
- 前記ビアは銅(Cu)で作製され、10マイクロメートルのブレック長さを有する、請求項1に記載の方法。
- 前記導電性ライナは、チタン(Ti)、タンタル(Ta)、ルテニウム(Ru)、タングステン(W)、窒化チタン(TiN)、窒化タンタル(TaN)、窒化ルテニウム(RuN)、及び窒化タングステン(WN)からなる群から選択される材料で作製され、前記導電性ライナは、導電性材料がそこを通って拡散するのを防ぐことができる、請求項1に記載の方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/491372 | 2009-06-25 | ||
US12/491,372 US8164190B2 (en) | 2009-06-25 | 2009-06-25 | Structure of power grid for semiconductor devices and method of making the same |
Publications (2)
Publication Number | Publication Date |
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JP2011009740A JP2011009740A (ja) | 2011-01-13 |
JP5782232B2 true JP5782232B2 (ja) | 2015-09-24 |
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JP2010129210A Active JP5782232B2 (ja) | 2009-06-25 | 2010-06-04 | 半導体構造体の製造方法 |
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Country | Link |
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US (2) | US8164190B2 (ja) |
JP (1) | JP5782232B2 (ja) |
KR (1) | KR20100138752A (ja) |
CN (1) | CN101930965B (ja) |
Families Citing this family (15)
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US8901738B2 (en) | 2012-11-12 | 2014-12-02 | International Business Machines Corporation | Method of manufacturing an enhanced electromigration performance hetero-junction bipolar transistor |
US9391020B2 (en) * | 2014-03-31 | 2016-07-12 | Stmicroelectronics, Inc. | Interconnect structure having large self-aligned vias |
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US9418934B1 (en) * | 2015-06-30 | 2016-08-16 | International Business Machines Corporation | Structure and fabrication method for electromigration immortal nanoscale interconnects |
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US11600519B2 (en) * | 2019-09-16 | 2023-03-07 | International Business Machines Corporation | Skip-via proximity interconnect |
CN111430330A (zh) * | 2020-04-08 | 2020-07-17 | 中国科学院微电子研究所 | 半导体互连结构、其制作方法及半导体芯片 |
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2009
- 2009-06-25 US US12/491,372 patent/US8164190B2/en active Active
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2010
- 2010-06-04 JP JP2010129210A patent/JP5782232B2/ja active Active
- 2010-06-08 KR KR1020100053851A patent/KR20100138752A/ko not_active Application Discontinuation
- 2010-06-17 CN CN2010102063647A patent/CN101930965B/zh active Active
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2012
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JP2011009740A (ja) | 2011-01-13 |
US8164190B2 (en) | 2012-04-24 |
US8349723B2 (en) | 2013-01-08 |
US20100327445A1 (en) | 2010-12-30 |
CN101930965A (zh) | 2010-12-29 |
CN101930965B (zh) | 2013-06-12 |
KR20100138752A (ko) | 2010-12-31 |
US20120100712A1 (en) | 2012-04-26 |
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