JP7476538B2 - 半導体装置を製造する方法 - Google Patents
半導体装置を製造する方法 Download PDFInfo
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- JP7476538B2 JP7476538B2 JP2020006889A JP2020006889A JP7476538B2 JP 7476538 B2 JP7476538 B2 JP 7476538B2 JP 2020006889 A JP2020006889 A JP 2020006889A JP 2020006889 A JP2020006889 A JP 2020006889A JP 7476538 B2 JP7476538 B2 JP 7476538B2
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- Prior art keywords
- layer
- sealing
- semiconductor chip
- temporary fixing
- fixing material
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- TXDNPSYEJHXKMK-UHFFFAOYSA-N sulfanylsilane Chemical compound S[SiH3] TXDNPSYEJHXKMK-UHFFFAOYSA-N 0.000 description 1
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- Structures Or Materials For Encapsulating Or Coating Semiconductor Devices Or Solid State Devices (AREA)
- Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
Description
支持体、及び該支持体上に設けられた仮固定材層を備えるキャリア基板を準備する工程と、
仮固定材層上に、チップ本体部、及び該チップ本体部の外表面上に設けられた電極パッドを有する半導体チップを、前記電極パッドが前記仮固定材層に接する向きで配置する工程と、
前記半導体チップを封止する封止層を形成することにより、前記半導体チップ及び前記封止層を含む封止構造体を形成する工程であって、前記封止構造体が、前記仮固定材層と接する接続面を有し、該接続面に前記半導体チップが露出している、工程と、
前記封止構造体から前記キャリア基板を分離する工程と、
前記封止構造体の前記接続面上に、前記電極パッドに接続された配線を含む再配線層を形成する工程と、をこの順で含む。前記封止層が、硬化性樹脂及び無機充填剤を含有する顆粒状の封止材を金型内で加熱及び加圧することを含むコンプレッションモールディングによって形成される。
表1に示される特性を有する顆粒状封止材及び液状封止材を準備した。表中のTg(ガラス転移温度)及び線膨張係数は封止材の硬化物の物性である。線膨張係数はTg未満の温度領域における値である。
支持体としてのアルミニウム板(320mm×320mm×1.1mm厚)上に、仮固定材層(Revalpha3195V、日東電工)を貼り合わせて、キャリア基板を準備した。仮固定材層上に、110μm、400μm又は670μmの厚さを有する3種の半導体チップを、それぞれ27個ずつ配置した。半導体チップをキャリア基板とともにコンプレッションモールディング装置の金型内に配置し、金型内に更に顆粒状封止材を入れた。温度130℃、時間360秒のコンプレッションモールディングにより、厚さ800μmの封止層を形成した。次いで、金型から封止構造体をキャリア基板とともに取り出し、キャリア基板を封止構造体から剥離した。剥離後、半導体チップと封止層とで形成された段差G(図3参照)を接触式表面粗さ計によって測定した。比較のため、顆粒状封止材に代えて液状封止材を用いて同様の試験を行った。
Claims (5)
- 支持体、及び該支持体上に設けられた仮固定材層を備えるキャリア基板を準備する工程と、
前記仮固定材層上に、チップ本体部、及び該チップ本体部の外表面上に設けられた電極パッドを有する半導体チップを、前記電極パッドが前記仮固定材層に接する向きで配置する工程と、
前記半導体チップを封止する封止層を形成することにより、前記半導体チップ及び前記封止層を含む封止構造体を形成する工程であって、前記封止構造体が、前記仮固定材層と接する接続面を有し、該接続面に前記半導体チップが露出している、工程と、
前記封止構造体から前記キャリア基板を分離する工程と、
前記封止構造体の前記接続面上に、前記電極パッドに接続された配線を含む再配線層を形成する工程と、
をこの順で含み、
前記封止層が、硬化性樹脂及び無機充填剤を含有する顆粒状の封止材を金型内で加熱及び加圧することを含むコンプレッションモールディングによって形成され、
前記顆粒状の封止材の粒径が平均で2.0~3.5mmである、
半導体装置を製造する方法。 - 前記配線の幅が8μm以下である、請求項1に記載の方法。
- 前記半導体チップの厚さが、前記封止層の厚さに対して1/3以下である、請求項1又は2に記載の方法。
- 前記封止材の成型収縮率が0.5%以下であり、
前記成型収縮率が、前記封止層の25℃における体積がLaで、前記封止層の前記コンプレッションモールディングにおける加熱温度における体積がLbであるとき、式:Sm={(Lb-La)/Lb}×100で算出される値Smである、
請求項1~3のいずれか一項に記載の方法。 - 前記コンプレッションモールディングにおける加熱温度が100℃以上150℃以下である、請求項1~4のいずれか一項に記載の方法。
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JP2012129260A (ja) | 2010-12-13 | 2012-07-05 | Sumitomo Bakelite Co Ltd | 半導体素子封止体の製造方法および半導体パッケージの製造方法 |
JP2018133536A (ja) | 2017-02-17 | 2018-08-23 | 日立化成株式会社 | 封止材、wlp構造光半導体装置、及びその製造方法 |
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JP2018133536A (ja) | 2017-02-17 | 2018-08-23 | 日立化成株式会社 | 封止材、wlp構造光半導体装置、及びその製造方法 |
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