JP5081578B2 - 樹脂封止型半導体装置 - Google Patents
樹脂封止型半導体装置 Download PDFInfo
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- JP5081578B2 JP5081578B2 JP2007277269A JP2007277269A JP5081578B2 JP 5081578 B2 JP5081578 B2 JP 5081578B2 JP 2007277269 A JP2007277269 A JP 2007277269A JP 2007277269 A JP2007277269 A JP 2007277269A JP 5081578 B2 JP5081578 B2 JP 5081578B2
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- 239000004065 semiconductor Substances 0.000 title claims description 135
- 229910052751 metal Inorganic materials 0.000 claims description 58
- 239000002184 metal Substances 0.000 claims description 58
- 229920005989 resin Polymers 0.000 claims description 36
- 239000011347 resin Substances 0.000 claims description 36
- 239000000758 substrate Substances 0.000 claims description 31
- 238000007789 sealing Methods 0.000 claims description 30
- 239000004020 conductor Substances 0.000 claims description 21
- 230000017525 heat dissipation Effects 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 18
- 229910010293 ceramic material Inorganic materials 0.000 claims description 3
- 229920000620 organic polymer Polymers 0.000 claims description 3
- 239000002861 polymer material Substances 0.000 claims description 3
- 239000000470 constituent Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 description 97
- 239000010949 copper Substances 0.000 description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 9
- 229910052802 copper Inorganic materials 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 230000004048 modification Effects 0.000 description 8
- 238000012986 modification Methods 0.000 description 8
- 239000007769 metal material Substances 0.000 description 5
- 230000005855 radiation Effects 0.000 description 5
- 229910000679 solder Inorganic materials 0.000 description 5
- 206010037660 Pyrexia Diseases 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 3
- 238000009429 electrical wiring Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
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Description
図1は、本発明の第1実施形態によるBGA型半導体装置の断面図である。図2は、本発明の第1実施形態によるBGA型半導体装置の平面図である。図3は、本発明の第1実施形態によるBGA型半導体装置の全体斜視図である。なお、図1は、図2の100−100線に沿った断面を示している。まず、図1〜図3を参照して、本発明の第1実施形態によるBGA型半導体装置の構造について説明する。
図5は、本発明の第2実施形態によるBGA型半導体装置の断面図である。次に、図5を参照して、この第2実施形態によるBGA型半導体装置では、上記した第1実施形態によるBGA型半導体装置において、さらに、ヒートシンク40を備えている。このヒートシンク40はアルミニウムなどの熱伝導性の優れた金属材料から構成されており、複数の放熱フィン41を有している。そして、ヒートシンク40は、複数の金属バンプ30の各々と熱的に接続された状態で、封止樹脂層20の上面上に固定されている。
図6は、本発明の第3実施形態によるBGA型半導体装置の断面図である。次に、図6を参照して、この第3実施形態によるBGA型半導体装置では、複数の金属バンプ30の少なくとも一部が、所定の接続電極層3bと電気的に接続するように形成されている。これにより、接続電極層3bと電気的に接続された金属バンプ30を電気配線として機能させることができる。
図7は、本発明の第4実施形態によるBGA型半導体装置の断面図である。続いて、図1および図7を参照して、この第4実施形態によるBGA型半導体装置では、上記第1〜第3実施形態と異なり、配線基板1には、金属バンプ30(図1参照)に代えて金属ピン130(図7参照)が設けられている。なお、金属ピン130は、本発明の「放熱部材」および「金属柱」の一例である。この金属ピン130は、熱伝導性の優れた銅から構成されており、半導体チップ10の厚み方向に伸びるように、配線基板1に固定されている。具体的には、配線基板1の所定領域に、上面から厚み方向に所定の深さを有する凹部2aが複数形成されており、この複数の凹部2aの各々に、上記した金属ピン130が挿入されている。
図8は、本発明の第5実施形態によるBGA型半導体装置の断面図である。続いて、図8を参照して、本発明の第5実施形態によるBGA型半導体装置の構造について説明する。
2、102 基材層
3 配線層
3a 搭載部
3b 接続電極層
3c 放熱用の導体層
3d 接続部
4 配線層
4a 接続電極層
5 スルーホール
5a プラグ
6 半田ボール
10 半導体チップ
11 接着層
12 ボンディングワイヤ
20 封止樹脂層
30 金属バンプ(放熱部材、金属柱)
40 ヒートシンク
41 フィン
130 金属ピン(放熱部材、金属柱)
Claims (7)
- 半導体チップが搭載され、配線層を有する基板と、
前記基板に形成された外部接続電極と、
前記基板の前記半導体チップが搭載された領域とは異なる領域において、前記外部接続電極が形成された面とは反対の面に形成され、導電性材料からなる複数の放熱部材と、
前記放熱部材の少なくとも一部が露出する露出部を備えるように前記半導体チップを覆う封止樹脂層と、
を含み、
前記基板はその基板上に、前記放熱部材が接続された導体層と、前記半導体チップが搭載される搭載部と、前記導体層と前記搭載部とを接続する放射状に広がるように形成された接続部とを含む配線層を有し、
前記放熱部材の少なくとも一部は、所定の前記配線層と電気的に接続されており、前記複数の放熱部材はそれぞれが金属柱から形成されており、平面視において前記半導体チップを囲むように配列されていることを特徴とする、樹脂封止型半導体装置。 - 前記封止樹脂層は、前記放熱部材が同一平面で露出するように前記半導体チップを覆うことを特徴とする請求項1に記載の樹脂封止型半導体装置。
- 前記封止樹脂層は、前記放熱部材が同一平面で露出するように前記半導体チップと前記放熱部材とを覆うことを特徴とする請求項1に記載の樹脂封止型半導体装置。
- 前記樹脂封止層の上面上に搭載されるヒートシンクをさらに備え、
前記ヒートシンクと前記放熱部材とは、互いに熱的に接続されていることを特徴とする、請求項1〜3のいずれか1項に記載の樹脂封止型半導体装置。 - 前記半導体チップが前記封止樹脂層で封止されることによって、BGA型のパッケージ形態に構成されていることを特徴とする、請求項1〜4のいずれか1項に記載の樹脂封止型半導体装置。
- 前記基板は、樹脂材料、有機高分子材料およびセラミクス材料の少なくとも1つを含む構成材料から構成されていることを特徴とする、請求項1〜5のいずれか1項に記載の樹脂封止半導体装置。
- 前記接続部が、前記搭載部における4つの角部の各々に1つずつ形成されていることを特徴とする、請求項1〜6のいずれか1項に記載の樹脂封止半導体装置。
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