JP5599388B2 - 電力用半導体装置 - Google Patents
電力用半導体装置 Download PDFInfo
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- JP5599388B2 JP5599388B2 JP2011511209A JP2011511209A JP5599388B2 JP 5599388 B2 JP5599388 B2 JP 5599388B2 JP 2011511209 A JP2011511209 A JP 2011511209A JP 2011511209 A JP2011511209 A JP 2011511209A JP 5599388 B2 JP5599388 B2 JP 5599388B2
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- Prior art keywords
- insulating film
- buffer insulating
- layer
- semiconductor device
- pad portion
- Prior art date
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- 239000004065 semiconductor Substances 0.000 title claims description 61
- 239000010410 layer Substances 0.000 claims description 70
- 239000011229 interlayer Substances 0.000 claims description 26
- 239000004020 conductor Substances 0.000 claims description 24
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 6
- 239000012212 insulator Substances 0.000 claims description 3
- 230000006378 damage Effects 0.000 description 8
- 230000007547 defect Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
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- H01L2924/01082—Lead [Pb]
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- H01L2924/11—Device type
- H01L2924/13—Discrete devices, e.g. 3 terminal devices
- H01L2924/1304—Transistor
- H01L2924/1305—Bipolar Junction Transistor [BJT]
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- H01L2924/11—Device type
- H01L2924/13—Discrete devices, e.g. 3 terminal devices
- H01L2924/1304—Transistor
- H01L2924/1305—Bipolar Junction Transistor [BJT]
- H01L2924/13055—Insulated gate bipolar transistor [IGBT]
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- H01L2924/11—Device type
- H01L2924/13—Discrete devices, e.g. 3 terminal devices
- H01L2924/1304—Transistor
- H01L2924/1306—Field-effect transistor [FET]
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- H01L2924/13—Discrete devices, e.g. 3 terminal devices
- H01L2924/1304—Transistor
- H01L2924/1306—Field-effect transistor [FET]
- H01L2924/13091—Metal-Oxide-Semiconductor Field-Effect Transistor [MOSFET]
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- H01L2924/30—Technical effects
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- H01L2924/30105—Capacitance
Description
図1および図2を参照して、本実施の形態の電力用半導体装置としてのIGBTは、半導体層SLと、ゲート電極26と、ゲート絶縁膜29と、導体部24と、層間絶縁膜25と、緩衝絶縁膜23と、エミッタ電極21(電極層)と、コレクタ電極33と、ワイヤ22とを有する。
図4を参照して、本実施の形態の電力用半導体装置は、緩衝絶縁膜23(実施の形態1:図1)の代わりに緩衝絶縁膜23Vを有する。好ましくは、緩衝絶縁膜23Vは、緩衝絶縁膜23と同様に、エミッタ電極21(図4において図示せず)の面積の2分の1以下の面積を有する。
Claims (6)
- 半導体層(SL)と、
前記半導体層(SL)を流れる電流を制御するためのゲート電極(26)と、
前記半導体層(SL)および前記ゲート電極(26)を互いに電気的に絶縁するゲート絶縁膜(29)と、
前記半導体層(SL)の上に設けられ、かつ前記半導体層(SL)と電気的に接続された導体部(24)と、
前記導体部(24)が前記ゲート電極(26)と電気的に絶縁されるように、前記ゲート電極(26)の上に設けられた層間絶縁膜(25)と、
前記導体部(24)および層間絶縁膜(25)上の一部領域を覆い、かつ絶縁体からなる緩衝絶縁膜(23)と、
前記導体部(24)が露出する領域の上に位置する配線部分(21w)と、前記緩衝絶縁膜(23)の上に位置するパッド部分(21p)とを有する電極層(21)とを備え、
前記ゲート電極(26)は、平面視において一の方向に沿って延び、かつ前記一の方向に直交する方向において互いに間隔を空けて配置された複数のトレンチを埋め込むことにより形成されたトレンチゲートであり、
平面視において、前記緩衝絶縁膜(23)は四角形状を有しており、
平面視において前記一の方向に平行な前記緩衝絶縁膜(23)の両端部は、前記層間絶縁膜(25)の上に位置する、電力用半導体装置。 - 前記緩衝絶縁膜(23)は、前記電極層(21)の前記パッド部分(21p)の厚さの5分の1以上かつ5分の4以下の厚さを有する、請求項1に記載の電力用半導体装置。
- 前記緩衝絶縁膜(23)は、前記電極層(21)の面積の2分の1以下の面積を有する、請求項1に記載の電力用半導体装置。
- 前記緩衝絶縁膜(23)は、TEOS膜、SOG膜、有機系絶縁膜のいずれかである、請求項1に記載の電力用半導体装置。
- 前記電極層(21)の前記パッド部分(21p)に接合されたワイヤ(22)をさらに備え、
前記パッド部分(21p)は、前記ワイヤ(22)の幅寸法以上、かつ前記ワイヤ(22)の幅寸法の3倍以下の幅寸法を有する、請求項1に記載の電力用半導体装置。 - 前記電極層(21)の前記パッド部分(21p)に接合されたワイヤ(22)をさらに備え、
前記パッド部分(21p)は、前記パッド部分(21p)のうち前記ワイヤ(22)に接合される部分(44)の長さの3倍以下の長さを有する、請求項1に記載の電力用半導体装置。
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JP2015002234A (ja) * | 2013-06-14 | 2015-01-05 | サンケン電気株式会社 | 半導体装置及びその製造方法 |
JP6566512B2 (ja) * | 2014-04-15 | 2019-08-28 | ローム株式会社 | 半導体装置および半導体装置の製造方法 |
DE102015219183B4 (de) | 2015-10-05 | 2019-06-06 | Infineon Technologies Ag | Leistungshalbleiterbauelement, Halbleitermodul, Verfahren zum Verarbeiten eines Leistungshalbleiterbauelements |
WO2017098547A1 (ja) * | 2015-12-07 | 2017-06-15 | 三菱電機株式会社 | 炭化珪素半導体装置 |
CN110100314B (zh) * | 2017-06-09 | 2022-08-09 | 富士电机株式会社 | 半导体装置及半导体装置的制造方法 |
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