JP6825306B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP6825306B2 JP6825306B2 JP2016214817A JP2016214817A JP6825306B2 JP 6825306 B2 JP6825306 B2 JP 6825306B2 JP 2016214817 A JP2016214817 A JP 2016214817A JP 2016214817 A JP2016214817 A JP 2016214817A JP 6825306 B2 JP6825306 B2 JP 6825306B2
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- semiconductor device
- circuit board
- external connection
- front surface
- connection terminals
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- 239000004065 semiconductor Substances 0.000 title claims description 125
- 239000000758 substrate Substances 0.000 claims description 38
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- 229910052751 metal Inorganic materials 0.000 description 18
- 239000002184 metal Substances 0.000 description 18
- 229910000679 solder Inorganic materials 0.000 description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 10
- 229910052802 copper Inorganic materials 0.000 description 10
- 239000010949 copper Substances 0.000 description 10
- 238000007747 plating Methods 0.000 description 10
- 229910000881 Cu alloy Inorganic materials 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
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- 229910000570 Cupronickel Inorganic materials 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 4
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- 239000004332 silver Substances 0.000 description 4
- 239000004734 Polyphenylene sulfide Substances 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
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- 229920001296 polysiloxane Polymers 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 2
- PEEHTFAAVSWFBL-UHFFFAOYSA-N Maleimide Chemical compound O=C1NC(=O)C=C1 PEEHTFAAVSWFBL-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 2
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 2
- DMFGNRRURHSENX-UHFFFAOYSA-N beryllium copper Chemical compound [Be].[Cu] DMFGNRRURHSENX-UHFFFAOYSA-N 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- IUYOGGFTLHZHEG-UHFFFAOYSA-N copper titanium Chemical compound [Ti].[Cu] IUYOGGFTLHZHEG-UHFFFAOYSA-N 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- MOFOBJHOKRNACT-UHFFFAOYSA-N nickel silver Chemical compound [Ni].[Ag] MOFOBJHOKRNACT-UHFFFAOYSA-N 0.000 description 2
- 239000010956 nickel silver Substances 0.000 description 2
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- 150000002989 phenols Chemical class 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229920006122 polyamide resin Polymers 0.000 description 2
- -1 polybutylene terephthalate Polymers 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
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Description
[第1の実施の形態]
図1は、第1の実施の形態の半導体装置を示す図である。
また、図2は、第1の実施の形態の半導体装置の端子間の接合を示す図である。
なお、図2は、半導体装置1の接合端子40a,40bを拡大して表している。
絶縁板31は、電気的に絶縁性を有する材料により構成されている。このような材料として、例えば、酸化アルミニウム、窒化ケイ素等が挙げられる。
接合端子40a,40bは、導電性に優れた銅等の金属により構成されており、図2に示されるように、例えば、円筒状を成している。このような接合端子40a,40bの直径L1は、0.4mm以上、0.6mm以下であって、より好ましくは、0.45mm以上、0.55mm以下である。第1の実施の形態の場合では、例えば、0.5mm程度である。なお、接合端子40a,40bは、円筒状(断面が円形)に限らず、断面が方形の形状であっても構わない。
封止部材90は、エポキシ樹脂、マレイミド変性エポキシ樹脂、マレイミド変性フェノール樹脂、マレイミド樹脂等の熱硬化性樹脂である。また、封止部材90は、シリコーンゲル等の樹脂も利用することが可能である。特に、封止部材90がエポキシ樹脂等の熱硬化性樹脂である場合には、図1に示されるように、外囲ケース60内の外部接続端子80a,80bの一端部81a,81bが接合された回路板32のおもて面から弾性部83a,83bの一端部81a,81b側の下端の手前までを封止部材90で封止する。つまり、封止部材90が、弾性部83a,83bには、かからない領域である。このような封止部材90で外囲ケース60内を全て封止してしまうと、外部接続端子80a,80bの弾性部83a,83bも封止されてしまい、弾性部83a,83bが伸び縮み出来なくなってしまう。具体的には、弾性率が1000MPaより大きな封止部材については、外部接続端子80a,80bの弾性部83a,83bの下側までを封止することが望ましい。
絶縁層3aは、例えば、ポリイミド樹脂、エポキシ樹脂等により構成されている。また、場合によっては、ガラス繊維で構成されたガラスクロスを内部に含浸することも可能である。
このようなプリント基板3は、導電層3bをケース蓋部70のおもて面側にして、ケース蓋部70のおもて面に配置される。プリント基板3の導電層3bは、ケース蓋部70の貫通孔71a,71bから入り込んだ外部接続端子80a,80bの他端部82a,82bと電気的に接続される。
図3〜図5は、第1の実施の形態の半導体装置の製造工程を示す図である。
このように半導体素子10a,10bと接合端子40a,40bと外部接続端子80a,80bとが配置された積層基板30の絶縁板31の外周部に、外囲ケース60を、図3に示されるように、接着剤(図示を省略)を介してセットする。
これにより、半導体モジュール2が構成される。
なお、プリント基板3と放熱板4との配置順序は、放熱板4を先に配置しても構わない。
ここで、半導体装置1に対する参考例の半導体装置(半導体モジュール)について、図6を用いて説明する。
参考例の半導体装置も、半導体モジュール100に対して、第1の実施の形態と同様にプリント基板3及び放熱板4を配置している。但し、図6では、半導体モジュール100のみを示している。また、半導体モジュール100は、半導体モジュール2と同じ構成には、同様の符号を付している。
さらに、半導体装置1では、外部接続端子80a,80bの他端部82a,82bがケース蓋部70の裏面側から貫通孔71a,71bに入り込んでケース蓋部70のおもて面に当接して、外部接続端子80a,80bの弾性部83a,83bの弾性力により、ケース蓋部70を積層基板30側に絶えず付勢する。これにより、発熱した半導体素子10a,10bからの熱が伝導した積層基板30の変形に伴って半導体装置1が変形しても、外部接続端子80a,80bの一端部81a,81bと回路板32の接合端子40a,40bとの接合が維持される。同様に、外部接続端子80a,80bの他端部82a,82bとプリント基板3との接合が維持される。したがって、これらの接合不良の発生を防止することができ、半導体装置1の信頼性の低下を抑制することができるようになる。
第2の実施の形態では、半導体装置1においてケース蓋部70に代わって、直接プリント基板3が用いられた半導体装置1aについて、図7を用いて説明する。
なお、半導体装置1aは、半導体装置1と同じ構成には、同様の符号を付している。
半導体装置1aは、プリント基板3を含む半導体モジュール2aと、半導体モジュール2aの裏面側に取り付けられた放熱板4と、を有している。
次いで、外部接続端子80a,80bの他端部82a,82bを引き上げた状態で、プリント基板3のおもて面の導電層3b側に回り込ませて鉤型状に構成して、他端部82a,82bをプリント基板3の導電層3bに当接させる(図7参照)。これにより、外部接続端子80a,80bの弾性部83a,83bは伸びた状態が維持されるため、プリント基板3は、外部接続端子80a,80bの他端部82a,82bにより、図7中下側に押圧されるようになる。
次いで、半導体モジュール2aの積層基板30の金属板33にはんだ(図示を省略)を介して放熱板4を配置する。
このような半導体装置1aは、第1の実施の形態の半導体装置1と同様に、外部接続端子80a,80bが積層基板30とプリント基板3との間を電気的に接続することができる。
2 半導体モジュール
3 プリント基板
3a 絶縁層
3b 導電層
4 放熱板
10a,10b 半導体素子
20a,20b,50a,50b はんだ
30 積層基板
31 絶縁板
32 回路板
33 金属板
40a,40b 接合端子
60 外囲ケース
70 ケース蓋部
71a,71b 貫通孔
80a,80b 外部接続端子
81a,81b 一端部
82a,82b 他端部
83a,83b 弾性部
90 封止部材
Claims (11)
- 半導体素子と、
絶縁板と、前記絶縁板のおもて面に設けられ、前記半導体素子が設置される回路板とを備える積層基板と、
前記絶縁板の外周部に設けられ、前記回路板を取り囲む外囲ケースと、
前記外囲ケースの開口縁部上に裏面側が設けられ、前記回路板を覆って、貫通孔が形成される中継基板と、
一端部が前記回路板に接合し、前記貫通孔から前記中継基板のおもて面側に回り込んだ鉤型状を成す他端部の先端が前記中継基板のおもて面に当接して前記中継基板に引っかかり、前記一端部と前記他端部との間に、弾性変形可能であって、前記一端部側と前記他端部側とにそれぞれ伸長している弾性部を備える外部接続端子と、
を有する半導体装置。 - 前記外部接続端子の前記一端部が接合される前記回路板の接合領域は、前記貫通孔と対向している、
請求項1に記載の半導体装置。 - 前記回路板の前記接合領域に接合材を介して接合端子が設けられ、
前記外部接続端子の前記一端部は、前記接合端子に接合されている、
請求項2に記載の半導体装置。 - 前記接合端子は、筒状を成しており、
前記接合端子に、前記外部接続端子の前記一端部が圧入により挿入されている、
請求項3に記載の半導体装置。 - 前記外囲ケース内は、封止部材で封止されている、
請求項1に記載の半導体装置。 - 前記封止部材は、前記外部接続端子の前記一端部が接合された前記回路板のおもて面から前記弾性部の前記一端部側の下端の手前までを封止している、
請求項5に記載の半導体装置。 - 前記封止部材は、熱硬化性樹脂である、
請求項6に記載の半導体装置。 - 前記弾性部の弾性係数は、2000N/m以上、6000N/m以下である、
請求項1に記載の半導体装置。 - 前記弾性係数は、3000N/m以上、5000N/m以下である、
請求項8に記載の半導体装置。 - 主面に導電層を有するプリント基板が前記主面側から前記中継基板上に配置されて、
前記プリント基板の前記導電層と前記外部接続端子の前記他端部とが電気的に接続されている、
請求項1に記載の半導体装置。 - 前記中継基板のおもて面に、導電層が形成されており、
前記外部接続端子の前記先端が前記導電層に当接して電気的に接続されている、
請求項1に記載の半導体装置。
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