JPWO2020003495A1 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 231
- 229910052751 metal Inorganic materials 0.000 claims abstract description 147
- 239000002184 metal Substances 0.000 claims abstract description 147
- 229910000679 solder Inorganic materials 0.000 claims abstract description 75
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 7
- 239000000956 alloy Substances 0.000 claims abstract description 7
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 150000002739 metals Chemical class 0.000 description 36
- 239000011347 resin Substances 0.000 description 25
- 229920005989 resin Polymers 0.000 description 25
- 238000007789 sealing Methods 0.000 description 25
- 230000035882 stress Effects 0.000 description 22
- 239000000463 material Substances 0.000 description 21
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 8
- 229910010271 silicon carbide Inorganic materials 0.000 description 8
- 230000008646 thermal stress Effects 0.000 description 8
- 230000002093 peripheral effect Effects 0.000 description 7
- 229910001128 Sn alloy Inorganic materials 0.000 description 6
- FNYLWPVRPXGIIP-UHFFFAOYSA-N Triamterene Chemical compound NC1=NC2=NC(N)=NC(N)=C2N=C1C1=CC=CC=C1 FNYLWPVRPXGIIP-UHFFFAOYSA-N 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910001092 metal group alloy Inorganic materials 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect 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
- 239000012141 concentrate Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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Abstract
Description
図1はこの発明の実施の形態1にかかる半導体装置101の構成を例示する平面図である。図2は半導体装置101の構成を例示する断面図であり、図1の位置II-IIにおける断面を示す。
図4はこの発明の実施の形態2にかかる半導体装置102の構成を例示する平面図である。図5は半導体装置102の構成を例示する断面図であり、図4の位置V-Vにおける断面を示す。
図6はこの発明の実施の形態3にかかる半導体装置103の構成を例示する平面図である。図7は半導体装置103の構成を例示する断面図であり、図6の位置VII-VIIにおける断面を示す。
図8はこの発明の実施の形態4にかかる半導体装置104の構成を例示する平面図である。図9は半導体装置104の構成を例示する断面図であり、図8の位置IX-IXにおける断面を示す。
図10はこの発明の実施の形態5にかかる半導体装置105の構成を例示する平面図である。図11は半導体装置105の構成を例示する断面図であり、図10の位置XI-XIにおける断面を示す。
図12はこの発明の実施の形態6にかかる半導体装置106の構成を例示する平面図である。図13は半導体装置106の構成を例示する断面図であり、図12の位置XIII-XIIIにおける断面を示す。
図14はこの発明の実施の形態7にかかる半導体装置107の構成を例示する断面図である。半導体装置107は半導体装置101に対して、複数の突起9を更に備えた構成を有する。
図15はこの発明の実施の形態8にかかる半導体装置108の構成を例示する断面図である。半導体装置108は半導体装置101において、第1孔211が開口部219を有する構成を備える。ここで、第1孔211を孔210として図示した。つまり本実施の形態は第2孔212が設けられる場合への適用も例示する。
図16はこの発明の実施の形態9にかかる半導体装置109の構成を例示する断面図である。図16は、孔210の複数が現れる位置での断面を示す。図16では、半導体素子1よりもヒートスプレッダ4側(リードフレーム2とは反対側)を省略した。
図17はこの発明の実施の形態10にかかる半導体装置110の構成を例示する断面図である。図17は、孔210の複数が現れる位置での断面を示す。図17では、半導体素子1よりもヒートスプレッダ4側(リードフレーム2とは反対側)を省略した。
図18はこの発明の実施の形態11にかかる半導体装置111の構成を例示する斜視図である。半導体装置111は半導体装置106に対して、領域213h,213i(図12参照)が囲む領域に第2孔212(図4参照)が設けられた構成を備える。
半導体装置101〜111において採用される半導体素子1は、Si(珪素)を主材料とする半導体素子(Siデバイス)の他、SiC(炭化珪素)を主材料とする半導体素子(SiCデバイス)を採用することができる。SiCデバイスは、Siデバイスと比較して損失が低い観点で有利である。また、機械的な特性値であるヤング率は、Siデバイスでは170GPa程度であり、SiCデバイスでは400GPa程度である。よってSiCデバイスはSiデバイスと比較して、熱サイクルに起因した熱変形による追従は発生しにくい。よってSiCデバイスはSiデバイスと比較して、半導体素子1および接合層5,5h,5iに発生する剪断応力が高い。そこで、接合層5,5h,5iで亀裂が発生しやすく、半導体素子1へ亀裂が進展する可能性が低く、半導体装置101〜111の寿命の均一化を図る利点は、SiデバイスよりもSiCデバイスにおいて効果的に発揮される。
Claims (10)
- 第1金属を材料とする電極(11,11f,11g,11h,11i)を有する半導体素子(1)と、
第2金属を材料とする第1部(21)を有し、前記第1部において前記電極の外郭を避けて複数の孔(210)が貫通するリードフレーム(2)と、
前記第1部と前記電極との間にある接合層(5)と、
前記複数の孔の内部にあって前記接合層と隣接し、前記接合層よりも厚いはんだ(31)と
を備え、
前記複数の孔は前記第1部を前記第1部の厚さ方向に貫通する複数の第1孔(211)を含み、
前記接合層は、
前記第1金属と錫との合金であって前記電極の側にある第1層(51)と、
前記第2金属と錫との合金であって前記第1部の側にある第2層(52)と
を有し、
前記電極の外郭よりも内側の環状の領域(213,213f,213g,213h,213i)に前記複数の第1孔がある半導体装置(101〜111)。 - 前記複数の孔(210)は前記環状の領域(213)に囲まれて前記厚さ方向に前記第1部(21)を貫通する第2孔(212)を更に有する、請求項1記載の半導体装置(102,111)。
- 前記複数の第1孔(211)は、前記環状の領域(213)に沿って長いスリット形状を呈する、請求項1記載の半導体装置(103)。
- 互いに前記第1部と平行に隔離された複数の電極(11f,11g,11h,11i)を前記電極として備え、
前記複数の電極のそれぞれにおいて、前記複数の第1孔(211)が前記リードフレームの外郭よりも内側で前記環状の領域(213f,213g,213h,213i)にある、請求項1記載の半導体装置(104,105,106)。 - 前記複数の電極(11f,11g)は前記リードフレーム(2)が延びる方向に沿って並ぶ、請求項4記載の半導体装置(104)。
- 前記複数の電極(11h,11i)は前記リードフレーム(2)が延びる方向とは異なる方向に並ぶ、請求項4記載の半導体装置(105,106)。
- 前記第1部(21)と前記半導体素子(1)との間に複数の突起(9)を更に備える、請求項1から請求項6のいずれか一つに記載の半導体装置(107)。
- 前記複数の孔(210)は、前記半導体素子(1)とは反対側に、前記半導体素子から離れるほど径が増大する開口部(219)を有する、請求項1から請求項7のいずれか一つに記載の半導体装置(108,109)。
- 前記複数の孔(210)の前記内部の前記はんだの厚さは、前記第1部の厚さ(t1)よりも薄い、請求項8記載の半導体装置(109)。
- 前記リードフレーム(2)は、前記第1部(21)と連結して前記第1部よりも前記半導体素子(1)から遠い第2部(22)を更に有し、
前記第1部の厚さ(t1)は、前記第2部の厚さ(t2)よりも厚い、請求項1から請求項9のいずれか一つに記載の半導体装置(110)。
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US20210233869A1 (en) | 2021-07-29 |
CN112335025A (zh) | 2021-02-05 |
US11302655B2 (en) | 2022-04-12 |
CN112335025B (zh) | 2024-06-07 |
WO2020003495A1 (ja) | 2020-01-02 |
JP6910553B2 (ja) | 2021-07-28 |
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