JP2021068832A - 半導体装置の製造方法 - Google Patents
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Abstract
Description
図1は、本発明の実施の形態1に係る半導体装置の製造方法を示すフローチャートである。図2は、ステップS2の工程が終了した状態を示す平面図であり、図3は、図2のA−A線に沿った断面図である。図4は、図3の破線部分を拡大した拡大断面図であり、図5は、図4に対応する拡大平面図である。
例えば、複数の半導体素子構造13が1つの半導体基板として繋がった状態で、ステップS8のような保護膜15bの本キュア工程を実施すると、加熱によって保護膜15bや半導体素子構造13の裏面電極13eなどの膜応力が上昇することに起因して、半導体ウェハなどの半導体基板11に反りが発生する。その結果、それ以降、ダイシングなどの切断工程を適切に実施できなくなる。
図16は、本発明の実施の形態2に係る半導体装置の製造方法を示すフローチャートである。ステップS11及びステップS12では、実施の形態1のステップS1及びステップS2と同様の工程が行われ、図3及び図4の構造体と同じ構造体が得られる。
本実施の形態2では、ダイシングテープ2と逆側からエピタキシャル層12を貫通する溝14と、保護膜15bとを形成し、半導体基板11の切断によって複数の半導体素子1が個別化された後に、保護膜15bの本キュア工程を実施する。これにより、半導体基板11の反りが抑制された本キュア前の状態で、半導体基板11の切断を実施することができるため、これらの切断を適切に実施することができる。また、半導体基板11の切断によるエピタキシャル層12のチッピングを抑制することができるため、半導体素子1の耐圧特性の低下を抑制することができる。さらに、保護膜前駆体溶液15aの不要な濡れ広がりを抑制することができる。
実施の形態2では、ステップS16にて、保護膜15bと、当該保護膜15b下の半導体基板11とを一括して切断したが、これに限ったものではない。例えば、複数の半導体素子構造13の間を切断する工程は、保護膜15bを切断する工程と個別に行われてもよい。そして、保護膜15bの切断にレーザが用いられ、複数の半導体素子構造13の間の切断にブレードが用いられてもよい。このような構成によれば、保護膜15bの屑がブレードに巻き込まれて付着し、砥石ブレードの寿命が短くなることを抑制することができるので、ブレードを用いた製造方法の生産性を高めることができる。
Claims (5)
- (a)複数の半導体素子構造が配設された半導体基板を準備する工程と、
(b)前記半導体基板をダイシングテープに貼り付ける工程と、
(c)前記工程(b)の後に、前記複数の半導体素子構造の間の前記半導体基板に溝を形成する工程と、
(d)前記複数の半導体素子構造のそれぞれの端部と、前記溝の側面及び底面とに亘って、保護膜前駆体溶液を塗布する工程と、
(e)前記保護膜前駆体溶液中の溶媒を粗乾燥させて保護膜を形成する工程と、
(f)前記溝に沿って前記保護膜を切断する工程と、
(g)前記複数の半導体素子構造の間を切断する工程と、
(h)前記工程(f)の後に、前記工程(g)の切断で形成された複数の半導体素子を前記ダイシングテープから剥がす工程と、
(i)前記工程(g)または前記工程(h)の後に、前記保護膜中の溶媒を揮発させる本キュアを行う工程と
を備える、半導体装置の製造方法。 - 請求項1に記載の半導体装置の製造方法であって、
前記工程(c)は前記工程(g)を含む、半導体装置の製造方法。 - 請求項2に記載の半導体装置の製造方法であって、
前記工程(f)の前記保護膜の切断にレーザが用いられる、半導体装置の製造方法。 - 請求項1に記載の半導体装置の製造方法であって、
前記工程(a)の前記半導体基板の表面にはエピタキシャル層が配設され、
前記工程(c)の前記溝は、前記ダイシングテープと逆側から前記エピタキシャル層を貫通して前記半導体基板の内部まで達し、
前記工程(g)は前記工程(f)と並行して行われる、半導体装置の製造方法。 - 請求項1に記載の半導体装置の製造方法であって、
前記工程(a)の前記半導体基板の表面にはエピタキシャル層が配設され、
前記工程(c)の前記溝は、前記ダイシングテープと逆側から前記エピタキシャル層を貫通して前記半導体基板の内部まで達し、
前記工程(g)は前記工程(f)と個別に行われ、
前記工程(f)の前記保護膜の切断にレーザが用いられ、
前記工程(g)の前記複数の半導体素子構造の間の切断にブレードが用いられる、半導体装置の製造方法。
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JP2019193952A JP7370215B2 (ja) | 2019-10-25 | 2019-10-25 | 半導体装置の製造方法 |
US16/931,678 US11302538B2 (en) | 2019-10-25 | 2020-07-17 | Semiconductor device manufacturing method |
DE102020126964.1A DE102020126964A1 (de) | 2019-10-25 | 2020-10-14 | Verfahren zum Herstellen einer Halbleitervorrichtung |
CN202011125680.1A CN112713099B (zh) | 2019-10-25 | 2020-10-20 | 半导体装置的制造方法 |
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WO2023007679A1 (ja) * | 2021-07-29 | 2023-02-02 | オリンパス株式会社 | 撮像ユニット、内視鏡、および、撮像ユニットの製造方法 |
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WO2017077792A1 (ja) * | 2015-11-05 | 2017-05-11 | ソニー株式会社 | 半導体装置、半導体装置の製造方法、及び、電子機器 |
JP2019050264A (ja) * | 2017-09-08 | 2019-03-28 | 株式会社ディスコ | ウェーハの加工方法 |
JP2019102599A (ja) * | 2017-11-30 | 2019-06-24 | 新日本無線株式会社 | 半導体装置の製造方法 |
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WO2023007679A1 (ja) * | 2021-07-29 | 2023-02-02 | オリンパス株式会社 | 撮像ユニット、内視鏡、および、撮像ユニットの製造方法 |
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