JP7372423B2 - 半導体素子および半導体装置 - Google Patents
半導体素子および半導体装置 Download PDFInfo
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- JP7372423B2 JP7372423B2 JP2022162236A JP2022162236A JP7372423B2 JP 7372423 B2 JP7372423 B2 JP 7372423B2 JP 2022162236 A JP2022162236 A JP 2022162236A JP 2022162236 A JP2022162236 A JP 2022162236A JP 7372423 B2 JP7372423 B2 JP 7372423B2
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- 229910052709 silver Inorganic materials 0.000 claims description 10
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- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
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- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 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
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Description
図1~図19に基づき、本発明の第1実施形態にかかる半導体素子A10と、半導体素子A10を備える半導体装置B10について説明する。
図1~図6に基づき、半導体素子A10について説明する。これらの図に示す半導体素子A10は、素子本体10、表面保護膜20、複数の第1電極311、複数の第2電極312および複数のバリア膜32を備える。
もいずれかから構成される。層間絶縁膜13は、プラズマCVD(Chemical Vapor Deposition)などにより形成される。
図10~図12に基づき、半導体素子A10の変形例である半導体素子A11について説明する。半導体素子A11は、表面保護膜20および堰部111の構成が、先述した半導体素子A10に対して異なる。
図13~図19に基づき、半導体装置B10について説明する。これらの図に示す半導体装置B10は、ダイパッド41、複数の端子42、接合層50、複数のワイヤ60、および封止樹脂70を備える。半導体装置B10は、たとえばオペアンプである。半導体装置B10は、増幅回路、コンパレータ、積分回路および発振回路など、様々な回路に用いられる。図13に示すように、半導体装置B10が示す例においては、当該装置の構造形式はSOP(Single Outline Package)である。なお、半導体装置B10の構造形式は、SOPに限定されない。なお、図13は、理解の便宜上、封止樹脂70を透過している。図13において透過した封止樹脂70を、想像線(二点鎖線)で示している。
図20~図30に基づき、本発明の第2実施形態にかかる半導体素子A20と、半導体素子A20を備える半導体装置B20について説明する。これらの図において、先述した半導体素子A10および半導体装置B10と同一または類似の要素には同一の符号を付して、重複する説明を省略する。
図20~図23に基づき、半導体素子A20について説明する。半導体素子A20においては、堰部111の構成が、先述した半導体素子A10と異なる。
図27~図30に基づき、半導体装置B20について説明する。半導体装置B20においては、半導体素子A20の構成が、先述した半導体装置B10と異なる。なお、図27に示すように、ダイパッド41に対する半導体素子A20の搭載位置は、半導体装置B10における半導体素子A10の搭載位置と同一である。
B10,B20:半導体装置
10:素子本体
10A:表面
10B:裏面
10C:側面
101C:第1領域
102C:第2領域
11:半導体基板
111:堰部
111A:頂面
111B:底面
12:半導体層
13:層間絶縁膜
14:配線層
141:第1配線層
142:第2配線層
15:パッシベーション膜
15A:開口
151:第1膜
152:第2膜
20:表面保護膜
21:切欠部
22:開口部
311:第1電極
312:第2電極
32:バリア膜
41:ダイパッド
411:本体部
412:吊り部
412A:端面
42:端子
421:パッド部
422:露出部
50:接合層
60:ワイヤ
70:封止樹脂
71:主面
72:裏面
731:第1側面
732:第2側面
81:第1ブレード
82:第2ブレード
83:溝
831:第1溝
832:第2溝
h1,h2:高さ
b1,b2:幅
z:厚さ方向
x:第1方向
y:第2方向
Claims (16)
- 厚さ方向を向く表面と、前記厚さ方向に対して直交する方向を向き、かつ前記表面につながる側面と、を有する素子本体と、
前記厚さ方向に対して直交する方向に凹む切欠部を有するとともに、前記表面の上に配置された表面保護膜と、
前記表面の上に配置され、かつ前記切欠部に囲まれるとともに、前記素子本体に導通する電極と、を備え、
前記素子本体には、前記側面から前記厚さ方向に対して直交する方向に突出する堰部が設けられ、
前記厚さ方向に視て、前記堰部は、前記切欠部の開口の近隣に位置しており、
前記厚さ方向に視て、前記表面保護膜と前記表面の周縁との最小間隔は、前記側面からの前記堰部の突出長さよりも短い、半導体素子。 - 前記表面保護膜は、ポリイミドを含む材料からなる、請求項1に記載の半導体素子。
- 前記電極は、金を含む材料からなる、請求項2に記載の半導体素子。
- 前記素子本体は、半導体基板と、前記表面を有し、かつ前記半導体基板に積層されるとともに、前記電極が導通する半導体層と、前記半導体層の上に配置されたパッシベーション膜と、を含み、
前記表面保護膜は、前記パッシベーション膜に接し、
前記堰部は、前記半導体基板に設けられている、請求項3に記載の半導体素子。 - 前記半導体基板は、前記表面とは反対側を向く裏面を有し、
前記堰部は、前記厚さ方向のうち前記表面が向く側を向く頂面と、前記頂面とは反対側を向く底面と、を有し、
前記底面は、前記裏面と面一である、請求項4に記載の半導体素子。 - 前記頂面は、凹状の曲面である、請求項5に記載の半導体素子。
- 前記半導体基板は、前記表面とは反対側を向く裏面を有し、
前記堰部は、前記厚さ方向のうち前記表面が向く側を向く頂面と、前記頂面とは反対側を向く底面と、を有し、
前記厚さ方向において、前記底面は、前記裏面から前記表面に寄って離間している、請求項4に記載の半導体素子。 - 前記頂面は、凹状の曲面である、請求項7に記載の半導体素子。
- 前記底面は、凹状の曲面である、請求項8に記載の半導体素子。
- 前記厚さ方向に視て、前記堰部は、前記厚さ方向に対して直交する一方向に沿っている、請求項5ないし9のいずれかに記載の半導体素子。
- 前記厚さ方向に視て、前記堰部は、前記素子本体の全周に位置する、請求項10に記載の半導体素子。
- 前記素子本体は、前記半導体層および前記電極の双方に導通する配線層を含み、
前記配線層は、前記パッシベーション膜に接している、請求項10または11に記載の半導体素子。 - 前記厚さ方向において前記配線層と前記電極との間に介在するバリア膜をさらに備え、
前記バリア膜の組成は、チタンを含む、請求項12に記載の半導体素子。 - 請求項5ないし13のいずれかに記載の半導体素子と、
前記半導体素子が搭載されたダイパッドと、
前記ダイパッドと前記裏面との間に介在する部分を含む接合層と、を備え、
前記接合層には、銀粒子が含有されている、半導体装置。 - 前記ダイパッドから離間して配置された端子と、
前記端子と前記電極とに接続されたワイヤと、をさらに備える、請求項14に記載の半導体装置。 - 前記半導体素子および前記ワイヤを覆う封止樹脂をさらに備える、請求項15に記載の半導体装置。
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