JP2022522764A - Igbtパワーデバイス - Google Patents
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- JP2022522764A JP2022522764A JP2021551599A JP2021551599A JP2022522764A JP 2022522764 A JP2022522764 A JP 2022522764A JP 2021551599 A JP2021551599 A JP 2021551599A JP 2021551599 A JP2021551599 A JP 2021551599A JP 2022522764 A JP2022522764 A JP 2022522764A
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- 238000007667 floating Methods 0.000 claims abstract description 61
- 210000000746 body region Anatomy 0.000 claims abstract description 35
- 238000011084 recovery Methods 0.000 abstract description 9
- 239000010410 layer Substances 0.000 description 26
- 238000010586 diagram Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
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- H01L29/42372—Gate electrodes for field effect devices for field-effect transistors with insulated gate characterised by the conducting layer, e.g. the length, the sectional shape or the lay-out
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Abstract
Description
2つの前記p型ボディ領域、及び2つの前記p型ボディ領域の間のn型ドリフト領域、の上に位置するゲート誘電体層と、前記ゲート誘電体層の上に位置するn型フローティングゲートと、横方向に前記n型フローティングゲートの両側の側壁を覆い、前記ゲート誘電体層及び前記n型フローティングゲートの上に位置するゲートと、前記ゲート及び前記n型フローティングゲートの間に介在する絶縁誘電体層と、
前記ゲート誘電体層に位置する第1の開口と、前記ゲート誘電体層に位置する第2の開口とを含み、
前記n型フローティングゲートは前記第1の開口によって1つの前記p型ボディ領域に接触してpn接合ダイオードを形成し、前記n型フローティングゲートは前記第2の開口によって他の1つの前記p型ボディ領域に接触してpn接合ダイオードを形成する。
2つのp型ボディ領域22、及び2つのp型ボディ領域22の間のn型ドリフト領域21、の上に位置するゲート誘電体層24と、ゲート誘電体層24の上に位置するn型フローティングゲート25と、ゲート誘電体層24及びn型フローティングゲート25の上に位置し、横方向にn型フローティングゲート25の両側の側壁を覆うことにより、IGBTパワーデバイスの電流チャネルのオン及びオフをn型フローティングゲート25と一緒に制御するゲート26と、容量結合によってn型フローティングゲート25に作用するゲート26、及びn型フローティングゲート25の間に介在し、一般的に二酸化ケイ素である絶縁誘電体層27と、
ゲート誘電体層24に位置する第1の開口1と、ゲート誘電体層24に位置する第2の開口2とを含み、
n型フローティングゲート25は第1の開口1によって1つのp型ボディ領域22に接触してpn接合ダイオードを形成し、n型フローティングゲート25は第2の開口2によって他の1つの前記p型ボディ領域22に接触してpn接合ダイオードを形成する。
Claims (5)
- n型コレクタ領域及びp型コレクタ領域と、前記n型コレクタ領域及び前記p型コレクタ領域の上に位置するn型ドリフト領域と、前記n型ドリフト領域に隔離され、前記n型ドリフト領域の頂部に位置する少なくとも2つのp型ボディ領域と、各前記p型ボディ領域内に位置するn型エミッタ領域と、
2つの前記p型ボディ領域、及び2つの前記p型ボディ領域の間のn型ドリフト領域、の上に位置するゲート誘電体層と、前記ゲート誘電体層の上に位置するn型フローティングゲートと、横方向に前記n型フローティングゲートの両側の側壁を覆い、前記ゲート誘電体層及び前記n型フローティングゲートの上に位置するゲートと、前記ゲート及び前記n型フローティングゲートの間に介在する絶縁誘電体層と、
前記ゲート誘電体層に位置する第1の開口と、前記ゲート誘電体層に位置する第2の開口とを含み、
前記n型フローティングゲートは前記第1の開口によって1つの前記p型ボディ領域に接触してpn接合ダイオードを形成し、前記n型フローティングゲートは前記第2の開口によって他の1つの前記p型ボディ領域に接触してpn接合ダイオードを形成する、
IGBTパワーデバイス。 - 前記n型フローティングゲートは前記ゲート誘電体層の上に絶縁層によって第1のn型フローティングゲート及び第2のn型フローティングゲートに仕切られ、前記第1のn型フローティングゲートは前記第1の開口によって1つの前記p型ボディ領域に接触してpn接合ダイオードを形成し、前記第2のn型フローティングゲートは前記第2の開口によって他の1つの前記p型ボディ領域に接触してpn接合ダイオードを形成する、
請求項1に記載のIGBTパワーデバイス。 - 前記IGBTパワーデバイスは、前記n型コレクタ領域及び前記p型コレクタ領域の上に位置するn型フィールドストップ領域をさらに含み、前記n型フィールドストップ領域は前記n型ドリフト領域の下方に位置する、
請求項1に記載のIGBTパワーデバイス。 - 前記第1の開口は前記n型フローティングゲートの下方に位置して前記n型ドリフト領域に近接するように設置される、
請求項1に記載のIGBTパワーデバイス。 - 前記第2の開口は前記n型フローティングゲートの下方に位置して前記n型ドリフト領域に近接するように設置される、
請求項1に記載のIGBTパワーデバイス。
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CN201911183421.1 | 2019-11-27 | ||
CN201911183421.1A CN112864234B (zh) | 2019-11-27 | 2019-11-27 | Igbt功率器件 |
PCT/CN2019/123759 WO2021103113A1 (zh) | 2019-11-27 | 2019-12-06 | Igbt功率器件 |
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JP2005536048A (ja) * | 2002-08-13 | 2005-11-24 | ジェネラル・セミコンダクター・インコーポレーテッド | プログラム可能なしきい値電圧を有するdmos装置 |
CN104465381A (zh) * | 2013-09-23 | 2015-03-25 | 苏州东微半导体有限公司 | 一种平面沟道的半浮栅器件的制造方法 |
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JP2020532109A (ja) * | 2017-11-01 | 2020-11-05 | 蘇州東微半導体有限公司 | Igbtパワーデバイス |
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US11721749B2 (en) | 2023-08-08 |
CN112864234A (zh) | 2021-05-28 |
CN112864234B (zh) | 2022-04-15 |
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