JP6466252B2 - 半導体パッケージ及びその製造方法 - Google Patents
半導体パッケージ及びその製造方法 Download PDFInfo
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- JP6466252B2 JP6466252B2 JP2015106230A JP2015106230A JP6466252B2 JP 6466252 B2 JP6466252 B2 JP 6466252B2 JP 2015106230 A JP2015106230 A JP 2015106230A JP 2015106230 A JP2015106230 A JP 2015106230A JP 6466252 B2 JP6466252 B2 JP 6466252B2
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- stress relaxation
- relaxation layer
- semiconductor package
- semiconductor device
- sealing body
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- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
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- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structures Or Materials For Encapsulating Or Coating Semiconductor Devices Or Solid State Devices (AREA)
- Geometry (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Description
<パッケージの外観>
図1は、本発明の第1実施形態に係る半導体パッケージ100の外観図である。なお、図1の手前部分は、内部構成の外観を示すために切断面を図示している。
図2は、図1を用いて説明した半導体パッケージ100の構造を詳細に説明するための断面図である。101は、支持基板であり、ここでは金属基板を用いる。金属基板としては、ステンレス等の鉄合金基板や銅合金基板などの金属基板を用いればよい。勿論、金属基板に限定する必要はなく、用途やコストに応じて、シリコン基板、ガラス基板、セラミックス基板、有機基板などを用いることも可能である。
図3〜図6は、本発明の第1実施形態に係る半導体パッケージ100の製造工程を示す図である。図3(A)において、支持基板101上に、応力緩和層102を形成する。ここでは、支持基板101として鉄合金のステンレス基板(SUS基板)を用いるが、ある程度の剛性を備えた基板であれば他の材料で構成される基板であってもよい。例えば、ガラス基板、シリコン基板、セラミックス基板、有機基板であってもよい。
図7Aに、本発明の第2実施形態に係る半導体パッケージ200の断面図を示す。第2実施形態に係る半導体パッケージ200は、応力緩和層102上に導電層31を設けた点で、第1実施形態の半導体パッケージ100と異なる。その他の点は、第1実施形態に係る半導体パッケージ100と同様である。
図9Aに、本発明の第3実施形態に係る半導体パッケージ300の断面図を示す。第3実施形態に係る半導体パッケージ300Aは、応力緩和層102上に設ける導電層にパターニングを施して積極的に配線として用いる点で、第2実施形態の半導体パッケージ200と異なる。その他の点は、第2実施形態に係る半導体パッケージ200と同様である。
図11に、本発明の第4実施形態に係る半導体パッケージ400の断面図を示す。第4実施形態に係る半導体パッケージ400は、導電層51を半導体デバイス104の下には設けない点で、第2実施形態の半導体パッケージ200と異なる。その他の点は、第2実施形態に係る半導体パッケージ200と同様である。
図13に、本発明の第5実施形態に係る半導体パッケージ500の断面図を示す。第5実施形態に係る半導体パッケージ500は、半導体デバイス104の下に接着材103を設けない点で、第1実施形態の半導体パッケージ100と異なる。その他の点は、第1実施形態に係る半導体パッケージ100と同様である。
上述した第1実施形態から第5実施形態に係る半導体パッケージでは、応力緩和層102の上に半導体デバイス104を設ける構成となるが、その際、半導体デバイス104を正確な位置に配置する必要がある。しかし、支持基板101上に応力緩和層102を設けた場合、支持基板101上にアライメントマークを設けたとしても応力緩和層102の存在により位置確認が困難となることが予想される。
(実施例1)
支持基板:金属基板(弾性率:193GPa@25℃、100℃)
応力緩和層:変性エポキシ系樹脂(弾性率:580MPa@25℃、4MPa@100℃)
封止体:エポキシ系樹脂(弾性率:16GPa@25℃、14.7GPa@100℃)
支持基板:金属基板(弾性率:193GPa@25℃、100℃)
応力緩和層:変性エポキシ系樹脂(弾性率:10MPa@25℃、0.6MPa@100℃)
封止体:エポキシ系樹脂(弾性率:1.8GPa@25℃、1GPa@100℃)
101:支持基板
102:応力緩和層
103:接着材
104:半導体デバイス
105:第1封止体
106:第1配線層
107:第2封止体
108:第2配線層
109:第3封止体
110:外部端子
111:平坦化層
Claims (18)
- 支持基板と、
前記支持基板の主面に設けられた応力緩和層と、
前記応力緩和層の上に配置された半導体デバイスと、
前記半導体デバイスを覆い、前記応力緩和層とは異なる絶縁材料からなる封止体と、
前記封止体を貫通して前記半導体デバイスと電気的に接続された配線と、
前記配線と電気的に接続された外部端子と、
を備えることを特徴とする半導体パッケージ。 - 支持基板と、
前記支持基板の主面に設けられた応力緩和層と、
前記応力緩和層の上に設けられた導電層と、
前記導電層の上に配置された半導体デバイスと、
前記半導体デバイスを覆い、前記応力緩和層とは異なる絶縁材料からなる封止体と、
前記封止体を貫通して前記半導体デバイスと電気的に接続された配線と、
前記配線と電気的に接続された外部端子と、
を備えることを特徴とする半導体パッケージ。 - 支持基板と、
前記支持基板の主面に設けられた応力緩和層と、
前記応力緩和層の上に設けられた導電層と、
前記導電層に囲まれ、かつ、前記応力緩和層の上に配置された半導体デバイスと、
前記半導体デバイスを覆い、前記応力緩和層とは異なる絶縁材料からなる封止体と、
前記封止体を貫通して前記半導体デバイスと電気的に接続された配線と、
前記配線と電気的に接続された外部端子と、
を備えることを特徴とする半導体パッケージ。 - 前記導電層が、少なくともキャパシタ、抵抗及びインダクタのいずれか1つを構成することを特徴とする請求項2又は3に記載の半導体パッケージ。
- 同一温度条件下で、前記支持基板の弾性率をA、前記応力緩和層の弾性率をB、前記封止体の弾性率をCとするとき、A>C>B若しくはC>A>Bの関係が成り立つことを特徴とする請求項1〜4のいずれか1項に記載の半導体パッケージ。
- 前記応力緩和層の弾性率は、室温で2GPa以下、かつ、100℃を超える温度で100MPa以下であることを特徴とする請求項5に記載の半導体パッケージ。
- 同一温度条件下で、前記支持基板の線膨張係数をa、前記応力緩和層の線膨張係数をb、前記封止体の線膨張係数をcとするとき、a≦c<b、又は、a≒c<bの関係が成り立つことを特徴とする請求項1〜6のいずれか1項に記載の半導体パッケージ。
- 前記半導体デバイスの周囲に、前記応力緩和層に設けられた開口部を有することを特徴とする請求項1〜7のいずれか1項に記載の半導体パッケージ。
- 前記開口部は、アライメントマークであり、少なくとも一辺が480μm以下の多角形、又は、直径480μm以下の円形であることを特徴とする請求項8に記載の半導体パッケージ。
- 支持基板の主面に応力緩和層を形成する工程と、
前記応力緩和層の上に、少なくとも1つの半導体デバイスを配置する工程と、
前記半導体デバイスを、前記応力緩和層とは異なる材料からなる封止体で覆う工程と、
前記封止体を貫通して前記半導体デバイスと電気的に接続された配線を形成する工程と、
前記配線と電気的に接続された外部端子を形成する工程と、
を備えることを特徴とする半導体パッケージの製造方法。 - 支持基板の主面に応力緩和層を形成する工程と、
前記応力緩和層の上に、導電層を形成する工程と、
前記導電層の上に、少なくとも1つの半導体デバイスを配置する工程と、
前記半導体デバイスを、前記応力緩和層とは異なる材料からなる封止体で覆う工程と、
前記封止体を貫通して前記半導体デバイスと電気的に接続された配線を形成する工程と、
前記配線と電気的に接続された外部端子を形成する工程と、
を備えることを特徴とする半導体パッケージの製造方法。 - 支持基板の主面に応力緩和層を形成する工程と、
前記応力緩和層の上に導電層を形成する工程と、
前記導電層をエッチングして前記応力緩和層を露出させる工程と、
前記応力緩和層を露出させた領域に、少なくとも1つの半導体デバイスを配置する工程と、
前記半導体デバイスを、前記応力緩和層とは異なる材料からなる封止体で覆う工程と、
前記封止体を貫通して前記半導体デバイスと電気的に接続された配線を形成する工程と、
前記配線と電気的に接続された外部端子を形成する工程と、
を備えることを特徴とする半導体パッケージの製造方法。 - 前記導電層をパターニングして、少なくともキャパシタ、抵抗及びインダクタのいずれか1つを形成することを特徴とする請求項11又は12に記載の半導体パッケージの製造方法。
- 同一温度条件下で、前記支持基板の弾性率をA、前記応力緩和層の弾性率をB、前記封止体の弾性率をCとするとき、A>C>B若しくはC>A>Bの関係が成り立つことを特徴とする請求項10〜13のいずれか1項に記載の半導体パッケージの製造方法。
- 前記応力緩和層の弾性率は、室温で2GPa以下、かつ、100℃を超える温度で100MPa以下であることを特徴とする請求項14に記載の半導体パッケージの製造方法。
- 同一温度条件下で、前記支持基板の線膨張係数をa、前記応力緩和層の線膨張係数をb、前記封止体の線膨張係数をcとするとき、a≦c<b、又は、a≒c<bの関係が成り立つことを特徴とする請求項10〜15のいずれか1項に記載の半導体パッケージの製造方法。
- 前記半導体デバイスの周囲に、前記応力緩和層をエッチングして開口部を形成することを特徴とする請求項10〜16のいずれか1項に記載の半導体パッケージの製造方法。
- 前記開口部は、アライメントマークであり、少なくとも一辺が480μm以下の多角形、又は、直径480μm以下の円形であることを特徴とする請求項17に記載の半導体パッケージの製造方法。
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