JP7443359B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
- Publication number
- JP7443359B2 JP7443359B2 JP2021522233A JP2021522233A JP7443359B2 JP 7443359 B2 JP7443359 B2 JP 7443359B2 JP 2021522233 A JP2021522233 A JP 2021522233A JP 2021522233 A JP2021522233 A JP 2021522233A JP 7443359 B2 JP7443359 B2 JP 7443359B2
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- Prior art keywords
- layer
- conductive
- bonding
- bonding layer
- semiconductor device
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 36
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 33
- 229910052709 silver Inorganic materials 0.000 claims description 33
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- 229910052802 copper Inorganic materials 0.000 claims description 22
- 239000010931 gold Substances 0.000 claims description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 20
- 229910052782 aluminium Inorganic materials 0.000 claims description 18
- 229910052759 nickel Inorganic materials 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 14
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 10
- 239000010936 titanium Substances 0.000 claims description 10
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 7
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- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 claims description 5
- 229910052735 hafnium Inorganic materials 0.000 claims description 5
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 238000004891 communication Methods 0.000 description 54
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- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 6
- 229910000679 solder Inorganic materials 0.000 description 6
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- 230000005669 field effect Effects 0.000 description 3
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- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 1
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- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
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- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/73—Means for bonding being of different types provided for in two or more of groups H01L24/10, H01L24/18, H01L24/26, H01L24/34, H01L24/42, H01L24/50, H01L24/63, H01L24/71
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- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
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Description
主面を有する導電部と、
前記主面に搭載された半導体素子と、
前記導電部と前記半導体素子との間に介在し、前記導電部と前記半導体素子とを導通接合させる導電性接合材と、を備え、
前記導電性接合材は、金属基層と、第1接合層と、第2接合層とを含み、前記第1接合層は、前記金属基層と前記半導体素子との間に介在し、金属の固相拡散により前記半導体素子と接合されており、前記第2接合層は、前記金属基層と前記導電部との間に介在し、金属の固相拡散により前記導電部と接合されている、半導体装置。
付記2.
前記金属基層のヤング率は、前記第1接合層および前記第2接合層の各々のヤング率よりも小である、付記1に記載の半導体装置。
付記3.
前記金属基層の厚さは、前記第1接合層および前記第2接合層の各々の厚さよりも大である、付記2に記載の半導体装置。
付記4.
前記金属基層の構成材料は、アルミニウム、チタン、亜鉛、ハフニウムおよびエルビウムの少なくともいずれかを含む、付記3に記載の半導体装置。
付記5.
前記第1接合層および前記第2接合層の各々の構成材料は、銀、銅および金の少なくともいずれかを含む、付記4に記載の半導体装置。
付記6.
前記半導体素子は、素子本体と、前記素子本体に形成された裏面電極と、を有し、
前記裏面電極と前記第1接合層とが固相拡散により互いに接合されている、付記1ないし5のいずれか1つに記載の半導体装置。
付記7.
前記第1接合層および前記第2接合層の各々の厚さは、前記裏面電極の厚さよりも大である、付記6に記載の半導体装置。
付記8.
前記導電性接合材は、第1中間層および第2中間層を含み、前記第1中間層は、前記金属基層と前記第1接合層との間に介在し、前記第2中間層は、前記金属基層と前記第2接合層との間に介在する、付記1ないし7のいずれか1つに記載の半導体装置。
付記9.
前記第1中間層および前記第2中間層の各々の構成材料は、ニッケルを含む、付記8に記載の半導体装置。
付記10.
前記導電部と対向する支持面を有する支持基板をさらに備える、付記1ないし9のいずれか1つに記載の半導体装置。
付記11.
前記導電部を前記支持基板に接合する接合部材をさらに備え、
前記接合部材は、固相拡散により接合された複数の金属層を含む、付記10に記載の半導体装置。
付記12.
前記導電部および前記半導体素子と、前記支持基板の一部と、を覆う封止樹脂をさらに備え、前記支持基板は、前記支持面と反対側の底面を有し、前記底面は、前記封止樹脂から露出している、付記10または11に記載の半導体装置。
付記13.
第1入力端子と、第2入力端子と、第1出力端子と、第2出力端子とをさらに備え、
前記半導体素子は、第1スイッチング素子および第2スイッチング素子を含み、前記導電部は、前記第1スイッチング素子が導通接合される第1導電部と、前記第2スイッチング素子が導通接合される第2導電部と、を含み、
前記第1入力端子は前記第1導電部に接続され、前記第2入力端子は前記第2スイッチング素子に接続され、前記第1出力端子および前記第2出力端子は前記第2導電部に接続されており、
前記封止樹脂は、前記第1入力端子、前記第2入力端子、前記第1出力端子および前記第2出力端子の各々の一部を覆っている、付記12に記載の半導体装置。
付記14.
前記半導体素子を支持する支持面を有する支持部材をさらに備え、
前記導電部は、主面部と、底面部と、前記主面部および前記底面部を導通させる連絡部と、を含む、付記1ないし9のいずれか1つに記載の半導体装置。
付記15.
前記半導体素子は、半導体レーザ素子およびスイッチング素子を含み、
前記導電部は、互いに離間する第1部および第2部を含み、
前記半導体レーザ素子は、前記第1部に導通接合され、前記スイッチング素子は、前記第2部に導通接合されている、付記14に記載の半導体装置。
付記16.
前記半導体レーザ素子と、前記スイッチング素子と、前記支持部材の前記支持面とを覆う透光樹脂をさらに備える、付記15に記載の半導体装置。
付記17.
透光樹脂をさらに備え、
前記半導体素子は、LED素子を含み、
前記透光樹脂は、前記LED素子と、前記支持部材の前記支持面の少なくとも一部とを覆う、付記14に記載の半導体装置。
付記18.
前記支持部材の前記支持面上に配置された枠状の堰部をさらに備え、
前記支持部材の厚さ方向に視て、前記堰部は、前記透光樹脂を囲んでいる、付記17に記載の半導体装置。
1 支持部材
1A 支持面
1B 底面
10 支持基板
10A 支持面
10B 底面
11 第1支持板
12 第2支持板
121 第1領域
122 第2領域
123 第3領域
13 底板
13A 凹部
14 第1面
15 第2面
16 第3面
17 第4面
18 堰部
19 接合部材
2 導電部
20 導電部
20A 主面
20B 裏面
201 第1導電部
202 第2導電部
203 第3導電部
21 主面部
21A 主面
211 第1主面部
211A 主面
211B 凸部
212 第2主面部
212A 主面
212B 凹部
213 第3主面部
213A 主面
214 第4主面部
214A 主面
22 底面部
221 第1底面部
222 第2底面部
223 第3底面部
224 第4底面部
23 連絡部
231 第1連絡部
232 第2連絡部
233 第3連絡部
234 第4連絡部
24 基材
25 導体層
26 絶縁層
271 ゲート配線層
272 検出配線層
31 第1入力端子
311 屈曲部
32 第2入力端子
321 屈曲部
33 第1出力端子
331 屈曲部
34 第2出力端子
341 屈曲部
35 ゲート端子
36 検出端子
4 半導体レーザ素子
40 半導体素子
400 LED素子
401 第1素子
402 第2素子
41 素子本体
411 素子主面
412 素子裏面
42 主面電極
421 電極パッド
43 裏面電極
44 第1レーザ電極
45 第2レーザ電極(裏面電極)
49 導電性接合材
490 金属基層
491 第1接合層
492 第2接合層
493 第1中間層
494 第2中間層
495 空隙
5 スイッチング素子
51 素子本体
511 素子主面
512 素子裏面
52 ゲート電極
53 ソース電極
54 ドレイン電極(裏面電極)
59 導電性接合材
6 コンデンサ
61 電極
62 電極
7 ワイヤ
71 第1ワイヤ
72 第2ワイヤ
73 第3ワイヤ
8 透光樹脂
80 封止樹脂
81 樹脂主面
82 樹脂底面
84 樹脂第1面
85 樹脂第2面
86 樹脂第3面
87 樹脂第4面
9 押圧部材
L レーザ光
x 方向
y 方向
z 方向(厚さ方向)
Claims (18)
- 主面を有する導電部と、
前記主面に搭載された半導体素子と、
前記導電部と前記半導体素子との間に介在し、前記導電部と前記半導体素子とを導通接合させる導電性接合材と、を備え、
前記導電性接合材は、金属基層と、第1接合層と、第2接合層とを含み、前記第1接合層は、前記金属基層と前記半導体素子との間に介在し、金属の固相拡散により前記半導体素子と接合されており、前記第2接合層は、前記金属基層と前記導電部との間に介在し、金属の固相拡散により前記導電部と接合されており、
前記導電性接合材は厚さ方向に視て前記半導体素子よりも大きいサイズであり、且つ当該厚さ方向に視て前記半導体素子の全体が前記導電性接合材と重なっており、
前記第1接合層は、前記厚さ方向において前記半導体素子と重なる部位と、前記厚さ方向において前記半導体素子と重ならない部位との境界部分に段差が形成されている、半導体装置。 - 前記金属基層のヤング率は、前記第1接合層および前記第2接合層の各々のヤング率よりも小である、請求項1に記載の半導体装置。
- 前記金属基層の厚さは、前記第1接合層および前記第2接合層の各々の厚さよりも大である、請求項2に記載の半導体装置。
- 前記金属基層の構成材料は、アルミニウム、チタン、亜鉛、ハフニウムおよびエルビウムの少なくともいずれかを含む、請求項3に記載の半導体装置。
- 前記第1接合層および前記第2接合層の各々の構成材料は、銀、銅および金の少なくともいずれかを含む、請求項4に記載の半導体装置。
- 前記半導体素子は、素子本体と、前記素子本体に形成された裏面電極と、を有し、
前記裏面電極と前記第1接合層とが固相拡散により互いに接合されている、請求項1ないし5のいずれか1つに記載の半導体装置。 - 前記第1接合層および前記第2接合層の各々の厚さは、前記裏面電極の厚さよりも大である、請求項6に記載の半導体装置。
- 前記導電性接合材は、第1中間層および第2中間層を含み、前記第1中間層は、前記金属基層と前記第1接合層との間に介在し、前記第2中間層は、前記金属基層と前記第2接合層との間に介在する、請求項1ないし7のいずれか1つに記載の半導体装置。
- 前記第1中間層および前記第2中間層の各々の構成材料は、ニッケルを含む、請求項8に記載の半導体装置。
- 前記導電部と対向する支持面を有する支持基板をさらに備える、請求項1ないし9のいずれか1つに記載の半導体装置。
- 前記導電部を前記支持基板に接合する接合部材をさらに備え、
前記接合部材は、固相拡散により接合された複数の金属層を含む、請求項10に記載の半導体装置。 - 前記導電部および前記半導体素子と、前記支持基板の一部と、を覆う封止樹脂をさらに備え、前記支持基板は、前記支持面と反対側の底面を有し、前記底面は、前記封止樹脂から露出している、請求項10または11に記載の半導体装置。
- 第1入力端子と、第2入力端子と、第1出力端子と、第2出力端子とをさらに備え、
前記半導体素子は、第1スイッチング素子および第2スイッチング素子を含み、前記導電部は、前記第1スイッチング素子が導通接合される第1導電部と、前記第2スイッチング素子が導通接合される第2導電部と、を含み、
前記第1入力端子は前記第1導電部に接続され、前記第2入力端子は前記第2スイッチング素子に接続され、前記第1出力端子および前記第2出力端子は前記第2導電部に接続されており、
前記封止樹脂は、前記第1入力端子、前記第2入力端子、前記第1出力端子および前記第2出力端子の各々の一部を覆っている、請求項12に記載の半導体装置。 - 前記半導体素子を支持する支持面を有する支持部材をさらに備え、
前記導電部は、主面部と、底面部と、前記主面部および前記底面部を導通させる連絡部と、を含む、請求項1ないし9のいずれか1つに記載の半導体装置。 - 前記半導体素子は、半導体レーザ素子およびスイッチング素子を含み、
前記導電部は、互いに離間する第1部および第2部を含み、
前記半導体レーザ素子は、前記第1部に導通接合され、前記スイッチング素子は、前記第2部に導通接合されている、請求項14に記載の半導体装置。 - 前記半導体レーザ素子と、前記スイッチング素子と、前記支持部材の前記支持面とを覆う透光樹脂をさらに備える、請求項15に記載の半導体装置。
- 透光樹脂をさらに備え、
前記半導体素子は、LED素子を含み、
前記透光樹脂は、前記LED素子と、前記支持部材の前記支持面の少なくとも一部とを覆う、請求項14に記載の半導体装置。 - 前記支持部材の前記支持面上に配置された枠状の堰部をさらに備え、
前記支持部材の厚さ方向に視て、前記堰部は、前記透光樹脂を囲んでいる、請求項17に記載の半導体装置。
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