JP6927430B2 - 半導体装置の製造方法 - Google Patents
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- 239000004065 semiconductor Substances 0.000 title claims description 65
- 238000004519 manufacturing process Methods 0.000 title claims description 33
- 239000011347 resin Substances 0.000 claims description 103
- 229920005989 resin Polymers 0.000 claims description 103
- 239000000758 substrate Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 16
- 238000000059 patterning Methods 0.000 claims description 3
- 239000010408 film Substances 0.000 description 108
- 230000000052 comparative effect Effects 0.000 description 7
- 238000001312 dry etching Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000003071 parasitic effect Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 230000010354 integration Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000007736 thin film deposition technique Methods 0.000 description 1
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- H01L21/28026—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor
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- 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
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- 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
- H01L21/76805—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 the opening being a via or contact hole penetrating the underlying conductor
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- 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
- H01L21/76807—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 for dual damascene structures
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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
- H01L21/7682—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 the dielectric comprising air gaps
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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
- H01L21/76895—Local interconnects; Local pads, as exemplified by patent document EP0896365
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- H01L23/3107—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape the device being completely enclosed
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- H01L2221/1005—Formation and after-treatment of dielectrics
- H01L2221/101—Forming openings in dielectrics
- H01L2221/1015—Forming openings in dielectrics for dual damascene structures
- H01L2221/1031—Dual damascene by forming vias in the via-level dielectric prior to deposition of the trench-level dielectric
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Description
図1から図9は、実施の形態1に係る半導体装置の製造方法を示す断面図である。まず、図1に示すように、半導体基板1の主面にゲート電極2、ソース電極3及びドレイン電極4を有する半導体デバイス5を形成する。半導体デバイス5を耐湿性の高い絶縁膜6で覆う。ソース電極3、ドレイン電極4及びダイシングライン7上の絶縁膜6を開口する。次に、半導体デバイス5及び半導体基板1のダイシングライン7を覆う感光性樹脂膜8を半導体基板1の主面の上にスピンコータで塗布する。感光性樹脂膜8を露光及び現像によりパターニングして、ダイシングライン7の上の感光性樹脂膜8を除去することなく、ゲート電極2の周りの感光性樹脂膜8を除去し、ソース電極3及びドレイン電極4の上の感光性樹脂膜8を除去して第1のコンタクトホール9を形成する。その後、熱硬化処理を行って感光性樹脂膜8を硬化する。
図13及び図14は、実施の形態2に係る半導体装置の製造方法を示す断面図である。図5の工程までは実施の形態1と同様である。本実施の形態ではダイシングライン7の上の感光性樹脂膜8をドライエッチングで加工することなく、図13に示すように第1及び第2のコンタクトホール9,13を介してソース電極3及びドレイン電極4に接続された配線18を形成する。次に、図14に示すように、ダイシングライン7の上の感光性樹脂膜8を半導体基板1と共にダイシングする。これにより、実施の形態1よりもプロセス数を削減することができる。その他の構成及び効果は実施の形態1と同様である。
図15から図18は、実施の形態3に係る半導体装置の製造方法を示す断面図である。本実施の形態は、実施の形態1及び2の感光樹脂フィルム11を非感光性樹脂フィルム19に置き換えたものである。図5の工程までは実施の形態1と同様である。次に、図15に示すように、ラミネート法又はSTP法を用いて、支持フィルム10に支持された非感光性樹脂フィルム19を感光性樹脂膜8の上面に貼り付ける。非感光性樹脂フィルム19は、ゲート電極2、ソース電極3及びドレイン電極4から離間しつつゲート電極2、ソース電極3及びドレイン電極4の上方を覆う。次に、非感光性樹脂フィルム19から支持フィルム10を剥がすと、図16に示すように、ゲート電極2の周りに中空構造12が形成される。次に、図17に示すように、全面に絶縁膜15及びレジスト16を順に形成し、レジスト16をフォトリソグラフィ等によりパターニングする。このレジスト16をマスクとして用いたドライエッチングを行うことにより、図18に示すように、第2のコンタクトホール13及び第1の開口14を開口する。その後、実施の形態1又は実施の形態2のどちらかの工程を行って素子構造を作製する。その他の構成及び効果は実施の形態1と同様である。
Claims (6)
- 半導体基板の主面に第1及び第2の電極を有する半導体デバイスを形成する工程と、
前記半導体デバイス及び前記半導体基板のダイシングラインを覆う樹脂膜を前記半導体基板の前記主面の上に形成し、前記ダイシングラインの上の前記樹脂膜を除去することなく前記第1の電極の周りの前記樹脂膜を除去し前記第2の電極の上の前記樹脂膜を除去して第1のコンタクトホールを形成する工程と、
前記第1及び第2の電極から離間しつつ前記第1及び第2の電極の上方を覆う樹脂フィルムを前記樹脂膜の上面に貼り付けて前記第1の電極の周りに中空構造を形成する工程と、
前記樹脂フィルムをパターニングして、前記第1のコンタクトホールにつながる第2のコンタクトホールと前記ダイシングラインの上方の第1の開口を同時に形成する工程と、
前記第1及び第2のコンタクトホールを介して前記第2の電極に接続された配線を形成する工程と、
前記第1の開口を形成した後に前記ダイシングラインに沿って前記半導体基板をダイシングする工程とを備えることを特徴とする半導体装置の製造方法。 - 支持フィルムに支持された前記樹脂フィルムを前記樹脂膜の上面に貼り付けた後に前記樹脂フィルムから前記支持フィルムを剥がすことを特徴とする請求項1に記載の半導体装置の製造方法。
- 前記第1の電極はひさしを含むY型又はT型のゲート電極であり、
前記ゲート電極の前記ひさしの下にも前記中空構造が形成されていることを特徴とする請求項1又は2に記載の半導体装置の製造方法。 - 前記第1の開口を形成した後、前記半導体基板をダイシングする前に前記ダイシングラインの上の前記樹脂膜を除去して第2の開口を形成する工程を更に備えることを特徴とする請求項1〜3の何れか1項に記載の半導体装置の製造方法。
- 前記第1の開口の端部が前記第2の開口の端部よりも前記半導体デバイス側であることを特徴とする請求項4に記載の半導体装置の製造方法。
- 前記ダイシングラインの上の前記樹脂膜を前記半導体基板と共にダイシングすることを特徴とする請求項1〜3の何れか1項に記載の半導体装置の製造方法。
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JP2005150452A (ja) * | 2003-11-17 | 2005-06-09 | Fujikura Ltd | 半導体パッケージの製造方法 |
JP3953027B2 (ja) * | 2003-12-12 | 2007-08-01 | ソニー株式会社 | 半導体装置およびその製造方法 |
JP4413062B2 (ja) | 2004-04-13 | 2010-02-10 | シャープ株式会社 | パターニングされた膜を有する基板の製造方法 |
JP2006093367A (ja) * | 2004-09-24 | 2006-04-06 | Sanyo Electric Co Ltd | 半導体装置の製造方法 |
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US20210066128A1 (en) | 2021-03-04 |
JPWO2019229802A1 (ja) | 2021-02-12 |
KR102497370B1 (ko) | 2023-02-07 |
CN112189251B (zh) | 2023-12-26 |
TW202004870A (zh) | 2020-01-16 |
KR20200143481A (ko) | 2020-12-23 |
US11244863B2 (en) | 2022-02-08 |
TWI683357B (zh) | 2020-01-21 |
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