JP4737466B2 - 半導体装置及びその製造方法 - Google Patents
半導体装置及びその製造方法 Download PDFInfo
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- JP4737466B2 JP4737466B2 JP2009027065A JP2009027065A JP4737466B2 JP 4737466 B2 JP4737466 B2 JP 4737466B2 JP 2009027065 A JP2009027065 A JP 2009027065A JP 2009027065 A JP2009027065 A JP 2009027065A JP 4737466 B2 JP4737466 B2 JP 4737466B2
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- metal layer
- semiconductor device
- resin
- electrode
- layer
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- 238000004519 manufacturing process Methods 0.000 title claims description 75
- 229910052751 metal Inorganic materials 0.000 claims description 245
- 239000002184 metal Substances 0.000 claims description 245
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- 238000000034 method Methods 0.000 claims description 38
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- MAKDTFFYCIMFQP-UHFFFAOYSA-N titanium tungsten Chemical compound [Ti].[W] MAKDTFFYCIMFQP-UHFFFAOYSA-N 0.000 claims description 8
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- 229910052737 gold Inorganic materials 0.000 description 6
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- 238000011161 development Methods 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 5
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- UMIVXZPTRXBADB-UHFFFAOYSA-N benzocyclobutene Chemical compound C1=CC=C2CCC2=C1 UMIVXZPTRXBADB-UHFFFAOYSA-N 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 4
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- 239000004925 Acrylic resin Substances 0.000 description 1
- 229910018170 Al—Au Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
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- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
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Description
半導体基板と、前記半導体基板の第1の面の上に設けられた電極と、前記第1の面の上に設けられ、前記電極の第1の部分の上に位置する開口部を有する絶縁膜と、を有する構造体を用意する工程と、
前記電極の前記第1の部分の上から前記絶縁膜の上に至るまで第1の金属層を形成する工程と、
前記第1の金属層を形成する工程の後、前記電極の前記第1の部分の上に位置する前記第1の金属層の第1の部分の上、並びに前記絶縁膜の上に樹脂層を形成する工程と、
前記樹脂層の第1の部分は残し、前記樹脂層の少なくとも前記第1の金属層の前記第1の部分の上に位置する第2の部分を除去して、樹脂突起を形成する工程と、
前記第1の金属層の上から前記樹脂突起の上に至るまで、前記電極と電気的に接続する第2の金属層を形成する工程と、
を有する。
前記樹脂層を形成する工程の前に、前記絶縁膜の上に前記第1の金属層と離間して第3の金属層を形成する工程を更に有し、
前記樹脂突起を形成する工程では、前記樹脂突起は、前記第1の金属層と前記第3の金属層の間に形成されてもよい。
前記樹脂層を形成する工程の前に、前記絶縁膜の上に第4の金属層を形成する工程を更に有し、
前記第4の金属層は、前記第1の金属層と前記第3の金属層の間に配置され、
前記樹脂突起を形成する工程では、前記樹脂突起は、前記第4の金属層の上に形成されてもよい。
前記樹脂突起を形成する工程では、前記樹脂突起は、前記第1の金属層の前記第1の部分と前記第1の金属層の第2の部分の間に位置する、前記第1の金属層の第3の部分の上に形成されてもよい。
前記電極はアルミニウムを含んでいてもよい。
前記第1の金属層はチタンタングステンを含んでいてもよい。
前記樹脂突起を形成する工程は、アルカリ性の現像液を用いて前記樹脂層を現像する工程を含んでいてもよい。
集積回路が形成され、第1の面を有した半導体基板と、
前記半導体基板の前記第1の面に形成され、前記集積回路に電気的に接続された電極と、
前記半導体基板の上に形成され、前記電極の第1の部分の上に開口部を有する絶縁膜と、
前記電極の上から前記絶縁膜の上に至り、少なくとも前記開口部を覆うように形成され、前記電極と電気的に接続された第1の金属層と、
前記第1の金属層に隣接して形成された樹脂突起と、
前記第1の金属層の上から前記樹脂突起の上に至るように形成された第2の金属層と、
を含む。
前記絶縁膜の上に前記第1の金属層と離間して形成された第3の金属層を更に有し、
前記樹脂突起は、前記第1の金属層と前記第3の金属層の間に形成されていてもよい。
前記絶縁膜の上に形成された第4の金属層を更に有し、
前記第4の金属層は、前記第1の金属層と前記第3の金属層の間に配置され、
前記樹脂突起は、前記第4の金属層の上に形成されていてもよい。
前記樹脂突起は、前記第1の金属層の前記第1の部分と前記第1の金属層の第2の部分の間に位置する、前記第1の金属層の第3の部分の上に形成されていてもよい。
1.1 半導体装置
以下、図面を参照して、第1の実施の形態に係る半導体装置について説明する。
以下、図面を参照して、本実施の形態に係る半導体装置の製造方法について説明する。
2.1 半導体装置
以下、図面を参照して、第2の実施の形態に係る半導体装置について説明する。
以下、図面を参照して、第2の実施の形態に係る半導体装置の製造方法について説明する。
以下、図面を参照して、第2の実施の形態の変形例に係る半導体装置およびその製造方法について説明する。
3.1 半導体装置
以下、図面を参照して、第3の実施の形態に係る半導体装置について説明する。
以下、図面を参照して、第3の実施の形態に係る半導体装置の製造方法について説明する。
Claims (9)
- 半導体基板と、前記半導体基板の第1の面の上に設けられた電極と、前記第1の面の上に設けられ、前記電極の第1の部分の上に位置する開口部を有する絶縁膜と、を有する構造体を用意する工程と、
前記電極の前記第1の部分の上から前記絶縁膜の上に至るまで耐アルカリ性を有する金属で第1の金属層を形成する工程と、
前記第1の金属層を形成する工程の後、前記電極の前記第1の部分の上に位置する前記第1の金属層の第1の部分の上、並びに前記絶縁膜の上に樹脂層を形成する工程と、
アルカリ性の現像液を用いて前記樹脂層を現像することによって、前記樹脂層の第1の部分は残し、前記樹脂層の少なくとも前記第1の金属層の前記第1の部分の上に位置する第2の部分を除去して、樹脂突起を形成する工程と、
前記第1の金属層の上から前記樹脂突起の上に至るまで、前記電極と電気的に接続する第2の金属層を形成する工程と、
を有する半導体装置の製造方法。 - 請求項1記載の半導体装置の製造方法において、
前記樹脂層を形成する工程の前に、前記絶縁膜の上に前記第1の金属層と離間して第3の金属層を形成する工程を更に有し、
前記樹脂突起を形成する工程では、前記樹脂突起は、前記第1の金属層と前記第3の金属層の間に形成される半導体装置の製造方法。 - 請求項2記載の半導体装置の製造方法において、
前記樹脂層を形成する工程の前に、前記絶縁膜の上に第4の金属層を形成する工程を更に有し、
前記第4の金属層は、前記第1の金属層と前記第3の金属層の間に配置され、
前記樹脂突起を形成する工程では、前記樹脂突起は、前記第4の金属層の上に形成される半導体装置の製造方法。 - 請求項1記載の半導体装置の製造方法において、
前記樹脂突起を形成する工程では、前記樹脂突起は、前記第1の金属層の前記第1の部分と前記第1の金属層の第2の部分の間に位置する、前記第1の金属層の第3の部分の上に形成される半導体装置の製造方法。 - 請求項1から請求項4のいずれか1項に記載の半導体装置の製造方法において、
前記電極はアルミニウムを含む半導体装置の製造方法。 - 請求項1から請求項5のいずれか1項に記載の半導体装置の製造方法において、
前記第1の金属層はチタンタングステンを含む半導体装置の製造方法。 - 請求項1から請求項6のいずれか1項に記載の半導体装置の製造方法において、
前記樹脂突起を形成する工程は、アルカリ性の現像液を用いて前記樹脂層を現像する工程を含む半導体装置の製造方法。 - 集積回路が形成され、第1の面を有した半導体基板と、
前記半導体基板の前記第1の面に形成され、前記集積回路に電気的に接続された電極と、
前記半導体基板の上に形成され、前記電極の第1の部分の上に開口部を有する絶縁膜と、
前記電極の上から前記絶縁膜の上に至り、少なくとも前記開口部を覆うように形成され、前記電極と電気的に接続された第1の金属層と、
前記第1の金属層に隣接して形成された樹脂突起と、
前記第1の金属層の上から前記樹脂突起の上に至るように形成された第2の金属層と、
前記絶縁膜の上に前記第1の金属層と離間して形成された第3の金属層と、
を含み、
前記第1の金属層は、耐アルカリ性を有する金属であり、
前記樹脂突起は、前記第1の金属層と前記第3の金属層の間に形成される、半導体装置。 - 請求項8記載の半導体装置において、
前記絶縁膜の上に形成された第4の金属層を更に有し、
前記第4の金属層は、前記第1の金属層と前記第3の金属層の間に配置され、
前記樹脂突起は、前記第4の金属層の上に形成された半導体装置。
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