JP5633496B2 - 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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- 239000004065 semiconductor Substances 0.000 title claims description 114
- 238000004519 manufacturing process Methods 0.000 title claims description 28
- 239000000758 substrate Substances 0.000 claims description 64
- 229910052782 aluminium Inorganic materials 0.000 claims description 25
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 25
- 239000011347 resin Substances 0.000 claims description 19
- 229920005989 resin Polymers 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 229910002601 GaN Inorganic materials 0.000 claims description 2
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 239000010432 diamond Substances 0.000 claims description 2
- 229910003460 diamond Inorganic materials 0.000 claims description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical group [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 11
- 229910052710 silicon Inorganic materials 0.000 description 11
- 239000010703 silicon Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
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Description
図1は、本発明の実施の形態1に係る半導体装置の断面図である。半導体装置10は、絶縁基板12を備えている。絶縁基板12は例えば、AlN、Al2O3、SiNなどで形成されている。絶縁基板12の上には配線パターン14a、14bが形成されている。絶縁基板12の上には更に中継端子14cが形成されている。中継端子14cは、一端が絶縁基板12に固定され他端が絶縁基板12の上方に伸びるように配線パターン14a、14bと同じ材料で形成されている。
本発明の実施の形態2に係る半導体装置及びその製造方法は、実施の形態1と共通点が多いので、実施の形態1との相違点を中心に説明する。図3は、本発明の実施の形態2に係る半導体装置の断面図である。半導体装置50は、電力端子14dを備えている。電力端子14dは、一端が絶縁基板12に固定され他端が絶縁基板12の上方に伸びるように形成されている。電力端子14dは、配線パターン14bと同じ材料であるアルミで形成されている。よって、電力端子14d、配線パターン14b、中継端子14c、及び裏面パターン16は全てアルミで形成されている。なお、電力端子14dは、ワイヤ22により半導体チップ20と電気的に接続されている。
本発明の実施の形態3に係る半導体装置及びその製造方法は、実施の形態1と共通点が多いので、実施の形態1との相違点を中心に説明する。図5は、本発明の実施の形態3に係る半導体装置の断面図である。半導体装置60は、絶縁基板12上に形成された制御回路用配線パターン14eを備えている。制御回路用配線パターン14eは、配線パターン14bと同じ材料であるアルミで形成されている。よって、制御回路用配線パターン14e、電力端子14d、配線パターン14b、中継端子14c、及び裏面パターン16は全てアルミで形成されている。制御回路用配線パターン14eには制御回路34が固定されている。制御回路34はワイヤ22によって半導体チップ20及び中継端子14cと接続されている。そして、制御回路34はシリコンゲル30によって封止されている。
本発明の実施の形態4に係る半導体装置及びその製造方法は、実施の形態3と共通点が多いので、実施の形態3との相違点を中心に説明する。図6は、本発明の実施の形態4に係る半導体装置の断面図である。半導体装置70は、モールド樹脂72を備えている。モールド樹脂72は、裏面パターン16の絶縁基板12と反対の面、中継端子14cの他端、及び電力端子14dの他端を外部に露出させるように、絶縁基板12、配線パターン14b、制御回路用配線パターン14e、半導体チップ20、中継端子14c、制御回路34、及び電力端子14dを覆っている。モールド樹脂72の線膨張係数は配線パターン14bの線膨張係数(アルミの線膨張係数)と同じである。
本発明の実施の形態5に係る半導体装置及びその製造方法は、実施の形態4と共通点が多いので、実施の形態4との相違点を中心に説明する。図7は、本発明の実施の形態5に係る半導体装置の断面図である。半導体装置74は、配線パターンの表面(アルミで形成された部分の表面をいう)と絶縁基板12の表面に形成された接着プライマー76を有している。接着プライマー76は、モールド樹脂72と絶縁基板12の密着性を高めるために形成されるものである。本発明の実施の形態5に係る半導体装置によれば、接着プライマー76によりモールド樹脂72と絶縁基板12の密着性を確保できる。
本発明の実施の形態6に係る半導体装置及びその製造方法は、実施の形態1と共通点が多いので、実施の形態1との相違点を中心に説明する。図8は、本発明の実施の形態6に係る半導体装置の断面図である。半導体装置80は、中継端子82の一端と電力端子84の一端が、それぞれ配線パターンに埋め込まれている点が特徴である。
Claims (10)
- 絶縁基板と、
前記絶縁基板上に形成された配線パターンと、
前記配線パターンに固定された半導体チップと、
鋳造により、前記絶縁基板に固定された部分と前記絶縁基板の上方に伸びる部分を有し、前記配線パターンと同じ材料で形成され、前記半導体チップと電気的に接続された中継端子と、
前記中継端子と電気的に接続され、前記半導体チップの制御信号を送信する制御回路と、
を備えたことを特徴とする半導体装置。 - 一端が前記絶縁基板に固定され他端が前記絶縁基板の上方に伸びるように前記配線パターンと同じ材料で形成され、前記半導体チップと電気的に接続された電力端子を備えたことを特徴とする請求項1に記載の半導体装置。
- 前記配線パターンと同じ材料で、前記絶縁基板上に形成された制御回路用配線パターンを備え、
前記制御回路は前記制御回路用配線パターンに固定されたことを特徴とする請求項1又は2に記載の半導体装置。 - 前記絶縁基板の裏面に形成された裏面パターンと、
前記裏面パターンの前記絶縁基板と反対の面、前記中継端子の他端、及び前記電力端子の他端を外部に露出させるように、前記絶縁基板、前記配線パターン、前記半導体チップ、前記中継端子、前記制御回路、及び前記電力端子を覆うモールド樹脂と、
を備えたことを特徴とする請求項2に記載の半導体装置。 - 前記絶縁基板の裏面に形成された裏面パターンと、
前記配線パターンの表面と前記絶縁基板の表面に形成された接着プライマーと、
前記裏面パターンの前記絶縁基板と反対の面、前記中継端子の他端、及び前記電力端子の他端を外部に露出させるように、前記絶縁基板、前記配線パターン、前記接着プライマー、前記半導体チップ、前記中継端子、前記制御回路、及び前記電力端子を覆うモールド樹脂と、
を備えたことを特徴とする請求項2に記載の半導体装置。 - 前記モールド樹脂の線膨張係数は前記配線パターンの線膨張係数と同じであることを特徴とする請求項4又は5に記載の半導体装置。
- 前記半導体チップは、ワイドバンドギャップ半導体によって形成されていることを特徴とする請求項1乃至6のいずれか1項に記載の半導体装置。
- 前記ワイドバンドギャップ半導体は、炭化珪素、窒化ガリウム系材料、又はダイヤモンドであることを特徴とする請求項7に記載の半導体装置。
- 絶縁基板の上に配線パターンを形成するための配線パターン用キャビティと前記絶縁基板から上方に伸びる中継端子を形成するための中継端子用キャビティとを有する鋳型の内部に前記絶縁基板を配置する工程と、
前記配線パターン用キャビティと前記中継端子用キャビティにアルミを流し込むアルミ注入工程と、
前記アルミを冷却する工程と、
を備えたことを特徴とする半導体装置の製造方法。 - 前記鋳型は前記絶縁基板から上方に伸びる電力端子を形成するための電力端子用キャビティを有し、
前記アルミ注入工程では、前記電力端子用キャビティにアルミを注入することを特徴とする請求項9に記載の半導体装置の製造方法。
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