JP7551554B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP7551554B2 JP7551554B2 JP2021057051A JP2021057051A JP7551554B2 JP 7551554 B2 JP7551554 B2 JP 7551554B2 JP 2021057051 A JP2021057051 A JP 2021057051A JP 2021057051 A JP2021057051 A JP 2021057051A JP 7551554 B2 JP7551554 B2 JP 7551554B2
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- 239000004065 semiconductor Substances 0.000 title claims description 120
- 239000002184 metal Substances 0.000 claims description 88
- 229910052751 metal Inorganic materials 0.000 claims description 88
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 239000011733 molybdenum Substances 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 239000010937 tungsten Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 description 15
- 238000005452 bending Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000000758 substrate Substances 0.000 description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000004544 sputter deposition Methods 0.000 description 6
- 239000012535 impurity Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000007747 plating Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
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Description
(半導体装置100の構造)
第1の実施形態に係る半導体装置100の詳細な構造について、図1、図2、及び図3を参照して説明する。図1は第1の実施形態に係る半導体装置100の断面図である。図2は、ドレイン電極40、及び制御層50に用いられる物質の線膨張係数を示している。図3は第1の実施形態に係る半導体装置100の平面図である。
半導体装置100の動作について、図3を参照して説明する。図3は、第1の実施形態に係る半導体装置100の等価回路図を示している。
図5~図7は、第1の実施形態に係る半導体装置100の製造工程を表す工程断面図である。図5~図7を参照して、第1の実施形態に係る半導体装置100の製造方法の一例を説明する。
第1の実施形態に係る半導体装置100の効果について、比較例の半導体装置300を用いて説明する。図10は、比較例に係る半導体装置300の断面図を示している。比較例の半導体装置300は、制御層50が設けられていない点で、第1の実施形態の半導体装置100と異なる。
10a 第1領域
10b 第2領域
11 ドレイン領域
12 ドリフト領域
13a 第1ベース領域
13b 第2ベース領域
14a 第1ソース領域
14b 第2ソース領域
21 第1ソース電極(第1電極)
22 第2ソース電極(第2電極)
31 第1ゲート電極
32 第2ゲート電極
40 ドレイン電極(第3電極)
41 第1金属層
42 第2金属層
43 第3金属層
44 第4金属層
50 制御層
60 絶縁膜
61 第1絶縁膜
62 第2絶縁膜
71 第1トランジスタ
72 第2トランジスタ
81 第1ソース電極パッド
82 第2ソース電極パッド
91 第1ゲート電極パッド
92 第2ゲート電極パッド
100、300 半導体装置
200 配線基板
210 接合材
220 導体部
P1 第1面
P2 第2面
Claims (4)
- 第1面と、前記第1面と第1方向において対向する第2面とを有する半導体層の第1
領域と、
前記第1領域の前記第2面と電気的に接続された第1電極と、
前記第1領域に設けられた第1ゲート電極と、
を有する第1トランジスタと、
前記第1方向と交わる第2方向において前記第1領域と隣り合って設けられ、前記第
1面と前記第2面とを有する前記半導体層の第2領域と、
前記第2領域に設けられた第2ゲート電極と、
前記第2領域の前記第2面と電気的に接続され、前記第1電極と離間して設けられた
第2電極と、
を有する第2トランジスタと、
前記第1面側に設けられ、前記第1トランジスタ及び前記第2トランジスタと
電気的に接続された第3電極と、
前記第1面との間に前記第3電極が位置するよう設けられた制御層と、
を有し、
前記第3電極は、
第1金属層と、
前記第1金属層よりも前記第2面側に設けられた第2金属層と、
前記第1金属層と前記第2金属層の間に設けられた第3金属層と、
前記第1金属層と前記制御層との間に設けられた第4金属層と、
を有し、
前記第3電極のうち前記第1金属層の前記第1方向における厚さが最も厚く、
前記制御層は前記第1金属層よりも小さい線膨張係数を有する半導体装置。 - 前記第1方向における前記第1金属層の厚さは10μm以上であり、且つ前記第1方向における前記半導体層の厚さは100μm以下である請求項1に記載の半導体装置。
- 前記第1金属層は、銀、銅のいずれかを含む請求項1または2に記載の半導体装置。
- 前記制御層は、シリコン、タングステン、モリブデン、クロムのいずれかを含む請求項1乃至3いずれか1つに記載の半導体装置。
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JP2015053455A (ja) | 2013-09-09 | 2015-03-19 | 株式会社東芝 | 電力用半導体装置及びその製造方法 |
WO2019244384A1 (ja) | 2018-06-19 | 2019-12-26 | パナソニックIpマネジメント株式会社 | 半導体装置 |
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