JP6443362B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP6443362B2 JP6443362B2 JP2016041427A JP2016041427A JP6443362B2 JP 6443362 B2 JP6443362 B2 JP 6443362B2 JP 2016041427 A JP2016041427 A JP 2016041427A JP 2016041427 A JP2016041427 A JP 2016041427A JP 6443362 B2 JP6443362 B2 JP 6443362B2
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- 239000004065 semiconductor Substances 0.000 title claims description 41
- 239000000758 substrate Substances 0.000 claims description 107
- 230000001681 protective effect Effects 0.000 claims description 71
- 239000000463 material Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 61
- 239000002184 metal Substances 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 12
- 230000035515 penetration Effects 0.000 description 7
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000012535 impurity Substances 0.000 description 5
- 229920002120 photoresistant polymer Polymers 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000001312 dry etching Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000010884 ion-beam technique Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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Description
第1実施形態について図面を参照しつつ説明する。本実施形態では、半導体装置を圧力センサに適用した例について説明する。なお、この半導体装置としての圧力センサは、例えば、自動車に搭載され、オイルポンプから排出されたオイルの圧力を検出する圧力センサとして適用されると好適である。
第2実施形態について説明する。本実施形態は、第1実施形態に対してスリット41dを形成する場所を変更したものであり、その他に関しては第1実施形態と同様であるため、ここでは説明を省略する。
第3実施形態について説明する。本実施形態は、第1実施形態に対して保護膜41の形状を変更したものであり、その他に関しては第1実施形態と同様であるため、ここでは説明を省略する。
本発明は上記した実施形態に限定されるものではなく、特許請求の範囲に記載した範囲内において適宜変更が可能である。
10a 一面
19〜21 接続部
30 第2基板
30a 一面
30b 他面
36 貫通孔
38 貫通電極
41 保護膜
41d スリット
Claims (5)
- 一面(10a)を有し、前記一面側に複数の接続部(19〜21)が形成された第1基板(10)と、
一面(30a)および当該一面と反対側の他面(30b)を有し、当該一面が前記第1基板の一面と接合されることで前記第1基板上に積層され、前記複数の接続部をそれぞれ露出させる複数の貫通孔(36)が前記第1基板との積層方向に沿って形成された第2基板(30)と、
前記複数の貫通孔のそれぞれに配置され、前記複数の接続部とそれぞれ電気的に接続される複数の貫通電極(38)と、
前記複数の貫通電極を一体的に覆う保護膜(41)と、を備え、
前記貫通電極および前記保護膜は、前記貫通孔の壁面に沿った形状で配置されており、
前記保護膜は、前記第1基板の一面に対する法線方向から視たとき、前記複数の貫通孔の開口部をそれぞれ囲む複数の枠状のスリット(41d)が形成され、前記スリットよりも内縁側の領域と前記スリットよりも外縁側の領域とが前記スリットによって分離されている半導体装置。 - 前記第2基板の他面上には、前記貫通電極と電気的に接続される配線層(39)が形成されており、
前記スリットは、前記保護膜を貫通して前記配線層を枠状に露出させる状態で形成されている請求項1に記載の半導体装置。 - 前記第2基板の他面上には、前記貫通電極と電気的に接続される配線層(39)が形成されており、
前記スリットは、前記貫通孔の開口部と共に、前記配線層を囲む状態で形成されている請求項1に記載の半導体装置。 - 前記第2基板は、前記他面側に絶縁膜(33)を有し、
前記配線層は、前記絶縁膜上に形成されており、
前記保護膜は、前記貫通電極と共に前記配線層を覆い、かつ前記絶縁膜と当接する部分が当該絶縁膜と同じ材料で構成されており、
前記保護膜および前記絶縁膜は、前記スリットが前記保護膜および前記絶縁膜を貫通して形成されることにより、前記スリットよりも内縁側の領域と前記スリットよりも外縁側の領域とに分離されている請求項3に記載の半導体装置。 - 前記貫通孔の底面と側面との間の境界部分上に配置された保護膜には、1240MPa以上の応力が印加される請求項1ないし4のいずれか1つに記載の半導体装置。
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