JP2013004572A - 半導体装置の製造方法 - Google Patents
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 86
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- 239000012212 insulator Substances 0.000 claims description 7
- 229910000679 solder Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 3
- 229920002120 photoresistant polymer Polymers 0.000 description 11
- 238000007740 vapor deposition Methods 0.000 description 3
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- H01L29/66446—Unipolar field-effect transistors with an active layer made of a group 13/15 material, e.g. group 13/15 velocity modulation transistor [VMT], group 13/15 negative resistance FET [NERFET]
- H01L29/66462—Unipolar field-effect transistors with an active layer made of a group 13/15 material, e.g. group 13/15 velocity modulation transistor [VMT], group 13/15 negative resistance FET [NERFET] with a heterojunction interface channel or gate, e.g. HFET, HIGFET, SISFET, HJFET, HEMT
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Abstract
【解決手段】可視光に対して透明な半導体基板1の表面にソース電極2及びドレイン電極3を形成する。半導体基板1の表面においてソース電極2とドレイン電極3との間に表側ゲート電極4を形成する。半導体基板1の表面においてソース電極2とドレイン電極3との間以外の領域に合わせマーク5を形成する。半導体基板1を透過して見える合わせマーク5に基づいて半導体基板1を位置合わせして、半導体基板1の裏面において表側ゲート電極4と対向する位置に裏側ゲート電極6を形成する。
【選択図】図2
Description
図1は、本発明の実施の形態1に係る半導体装置を示す上面図である。図2は図1のI−IIに沿った断面図である。半導体基板1は可視光に対して透明であり、例えばSiCやGaNなどのワイドギャップ半導体である。
図11は、本発明の実施の形態2に係る半導体装置を示す断面図である。本実施の形態では、表側ゲート電極4はT字型である。表側ゲート電極4のゲート長は、裏側ゲート電極6のゲート長と同じである。その他の構成及び製造方法は実施の形態1と同様である。
図12は、本発明の実施の形態3に係る半導体装置を示す断面図である。本実施の形態では、凹部7内に絶縁体13を充填して裏側ゲート電極6を絶縁体13で覆う。絶縁体13は例えばSiNである。その後に、半導体基板1の裏面に、ソース電極2と電気的に接続されたダイボンド用のメタル14を形成する。その他の構成及び製造方法は実施の形態1と同様である。このように裏側ゲート電極6を絶縁体13で覆うことにより、裏側ゲート電極6とソース電極2が短絡するのを防ぐことができる。
図13及び図14は、本発明の実施の形態4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13に示すように、ソース電極2とドレイン電極3上に半田バンプ15を形成する。次に、図14に示すように、半導体基板1の表面を回路基板16側に向けて、半田バンプ15を介してソース電極2及び前記ドレイン電極3を回路基板16の電極17に接合する。即ち、半導体装置を回路基板16にフェイスダウンで実装する。これにより、半導体基板1の裏面の裏側ゲート電極6が回路基板16に接触して物理的に破壊されるのを防ぐことができる。
2 ソース電極
3 ドレイン電極
4 表側ゲート電極
5 合わせマーク
6 裏側ゲート電極
7 凹部
13 絶縁体
14 メタル
15 半田バンプ
16 回路基板
17 電極
Claims (5)
- 可視光に対して透明な半導体基板の表面にソース電極及びドレイン電極を形成する工程と、
前記半導体基板の表面において前記ソース電極と前記ドレイン電極との間に表側ゲート電極を形成する工程と、
前記半導体基板の表面において前記ソース電極と前記ドレイン電極との間以外の領域に合わせマークを形成する工程と、
前記半導体基板を透過して見える前記合わせマークに基づいて前記半導体基板を位置合わせして、前記半導体基板の裏面において前記表側ゲート電極と対向する位置に裏側ゲート電極を形成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。 - 前記表側ゲート電極と前記合わせマークを同時に形成する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。
- 前記表側ゲート電極はT字型であり、
前記表側ゲート電極のゲート長は、前記裏側ゲート電極のゲート長と同じであ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。 - 前記半導体基板の裏面に凹部を形成する工程と、
前記凹部内に前記裏側ゲート電極を形成する工程と、
前記凹部内に絶縁体を充填して前記裏側ゲート電極を前記絶縁体で覆う工程と、
前記絶縁膜を充填した後に、前記半導体基板の裏面に、前記ソース電極と電気的に接続されたダイボンド用のメタルを形成する工程と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。 - 前記ソース電極及び前記ドレイン電極上に半田バンプを形成する工程と、
前記半導体基板の表面を回路基板側に向けて、前記半田バンプを介して前記ソース電極及び前記ドレイン電極を前記回路基板の電極に接合する工程とを更に備えることを特徴とする請求項1〜4の何れか1項に記載の半導体装置の製造方法。
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JP2011131206A JP2013004572A (ja) | 2011-06-13 | 2011-06-13 | 半導体装置の製造方法 |
US13/355,991 US8778748B2 (en) | 2011-06-13 | 2012-01-23 | Method for manufacturing semiconductor device |
DE102012203844.2A DE102012203844B4 (de) | 2011-06-13 | 2012-03-12 | Verfahren zum Herstellen einer Halbleitervorrichtung |
CN201210191772.9A CN102832132B (zh) | 2011-06-13 | 2012-06-12 | 半导体装置的制造方法 |
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JP2011131206A JP2013004572A (ja) | 2011-06-13 | 2011-06-13 | 半導体装置の製造方法 |
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JP2013004572A true JP2013004572A (ja) | 2013-01-07 |
JP2013004572A5 JP2013004572A5 (ja) | 2014-09-18 |
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US (1) | US8778748B2 (ja) |
JP (1) | JP2013004572A (ja) |
CN (1) | CN102832132B (ja) |
DE (1) | DE102012203844B4 (ja) |
Cited By (1)
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WO2023228267A1 (ja) * | 2022-05-24 | 2023-11-30 | 日本電信電話株式会社 | 電界効果トランジスタ |
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US9653516B2 (en) * | 2014-12-30 | 2017-05-16 | Win Semiconductors Corp. | Acoustic wave device structure, integrated structure of power amplifier and acoustic wave device, and fabrication methods thereof |
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- 2011-06-13 JP JP2011131206A patent/JP2013004572A/ja active Pending
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- 2012-01-23 US US13/355,991 patent/US8778748B2/en not_active Expired - Fee Related
- 2012-03-12 DE DE102012203844.2A patent/DE102012203844B4/de not_active Expired - Fee Related
- 2012-06-12 CN CN201210191772.9A patent/CN102832132B/zh not_active Expired - Fee Related
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WO2023228267A1 (ja) * | 2022-05-24 | 2023-11-30 | 日本電信電話株式会社 | 電界効果トランジスタ |
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US8778748B2 (en) | 2014-07-15 |
CN102832132A (zh) | 2012-12-19 |
DE102012203844B4 (de) | 2017-06-22 |
US20120315708A1 (en) | 2012-12-13 |
CN102832132B (zh) | 2015-06-10 |
DE102012203844A1 (de) | 2012-12-13 |
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