JP5629580B2 - 二重ポスト付きフリップチップ相互接続 - Google Patents
二重ポスト付きフリップチップ相互接続 Download PDFInfo
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Description
本発明は、2007年9月28日に出願された米国仮特許出願第60/995,849号の出願日の利益を主張するものであり、その開示内容は、参照することによって、ここに含まれるものとする。
本発明は、超小型電子パッケージおよび超小型電子アセンブリ用の超小型電子装置およびパッケージ化超小型電子構成部品に関する。
前面と、前面から離れる方に延伸している複数の第1の固体金属バンプと、を有している超小型電子素子であって、各ポストは、前面の方向における幅および前面から延びる高さを有しており、高さは、前記幅の少なくとも半分になっている、超小型電子素子と、
上面と、上面から延伸して可融性金属によって第1の固体金属ポストに接合されている複数の第2の固体金属ポストと、を有する基板であって、前記ポストは、上面および前記上面から離れる方に急角度で延伸している縁面を有する、基板と、
を備えるパッケージ化された超小型電子素子。
前面と、前面から離れる方に延伸する複数の第1の固体金属ポストと、を有する超小型電子素子であって、各ポストは、前面の方向における幅および前面から延びる高さを有しており、高さは、前記幅の少なくとも半分である、超小型電子素子と、
上面と、上面から延伸して第1の固体金属ポストに接合されている複数の第2の固体金属ポストと、を有する基板であって、前記第1のポストおよび前記第2のポストは、互いに拡散接合されている、基板と、
を備えるパッケージ化された超小型電子素子。
前面と、前面から離れる方に延伸している複数の第1の固体金属ポストと、を有している超小型電子素子であって、各ポストは、前面の方向における幅および前面から延びる高さを有しており、前記ポストは、本質的に、半田または鉛または錫以外の金属から成っている、超小型電子素子と、
上面と、上面から延伸して可融性金属によって第1の固体金属ポストに接合されている複数の第2の固体金属ポストと、を有している基板と、
を備えており、
前記第1の固体金属ポストまたは前記第2の固体金属ポストの直径の、前記複数の第1の固体金属ポストまたは前記複数の第2の固体金属ポスト間のピッチへの比率は、3:4を超えないパッケージ化された超小型電子素子。
前面と、前面から離れる方に延伸している複数の第1の固体金属ポストと、を有している超小型電子素子であって、各ポストは、前面の方向における幅および前面から延びる高さを有している、超小型電子素子と、
上面と、上面から延伸して第1の固体金属ポストに接合されている複数の第2の固体金属ポストと、を有している基板であって、前記第1のポストのピッチは、50μmから200μmの範囲内にあり、前記超小型電子素子の前記底面と前記基板の前記上面との間の距離は、80μmよりも大きい、基板と、
を備えていることを特徴とするパッケージ化された超小型電子素子。
前面と、前面から離れる方に延伸している複数の第1の固体金属ポストと、を有している超小型電子素子であって、各ポストは、前面の方向における幅および前面から延びる高さを有している、超小型電子素子と、
上面と、上面から延伸して第1の固体金属ポストに接合されている複数の第2の固体金属ポストと、を有している基板と、
を備えており、
前記複数の第1の固体金属ポストおよび前記複数の第2の固体金属ポストが、本質的に銅から成っているパッケージ化された超小型電子素子。
超小型電子素子と、基板と、前記超小型電子素子と前記基板との間に延伸している複数のピラーであって、各々が、前記超小型電子素子に取り付けられた第1の金属ポスト部分と、前記基板に取り付けられた第2の金属ポスト部分と、金属融着部分と、を備えている、複数のピラーと、を備えており、前記第1の金属部分および前記第2の金属部分は、互いに接合されており、前記複数のピラーは、50μm以上の長さを有しており、前記第1の金属ポスト部分および前記第2の金属ポスト部分の前記高さは、前記幅の少なくとも半分であるパッケージ化された超小型電子素子。
Claims (21)
- パッケージ化された超小型電子素子において、
前面と、前記前面から離れる方に延伸している複数の第1の固体金属ポストと、を有している超小型電子素子であって、各ポストは、前記前面の方向における幅および前記前面から延びる高さと、縁面とを有しており、前記高さは、前記幅の少なくとも半分になっている、超小型電子素子と、
上面と、前記上面から延伸して可融性金属によって前記第1の金属ポストに接合されている複数の第2の固体金属ポストと、を有している基板であって、前記第2のポストは、上面および前記第2のポストの前記上面から離れる方に急角度で延伸している縁面を有している、基板と、
を備え、
前記基板は、前記基板の前記上面とは反対側の底面にある端子と、前記基板を貫通して延伸し前記端子を第2の固形金属ポストに電気的に接続する導電性相互接続とを含み、
前記複数の第1の固体金属ポストはエッチングされた金属ポストであり、前記複数の第2の固体金属ポストは切頭円錐形状を備えたエッチングされた金属ポストであり、
前記可融性金属は、リフローされ、前記第1の固体金属ポストの露出した縁面と前記第2の固体金属ポストの露出した縁面とを濡らし、前記超小型電子素子の前記前面に隣接する前記第1の固体金属ポストの基面から前記基板の前記上面に隣接する前記第2の固体金属ポストの基面に延びる導電性柱を形成するパッケージ化された超小型電子素子。 - 前記複数の前記第1の固体金属ポストおよび前記複数の前記第2の固体金属ポストは、本質的に銅から成っている請求項1に記載のパッケージ化された超小型電子素子。
- 前記第1のポストの直径の、前記第1のポスト間のピッチに対する比率は、3:4を超えない請求項1に記載のパッケージ化された超小型電子素子。
- 前記第1のポストの下に位置するアンダーバンプ金属化物をさらに備えている請求項1に記載のパッケージ化された超小型電子素子。
- 前記第1のポストの直径は、前記第1のポストの各々間のピッチの半分よりも小さい請求項1に記載のパッケージ化された超小型電子素子。
- パッケージ化された超小型電子素子において、
前面と、前記前面から離れる方に延伸している複数の第1の固体金属ポストと、を有している超小型電子素子であって、各ポストは、前記前面の方向における幅および前記前面から延びる高さと、縁面とを有しており、前記ポストは、本質的に、半田または鉛または錫、以外の金属から成っている、超小型電子素子と、
上面と、前記上面から延伸して可融性金属によって前記第1の固体金属ポストに接合されている複数の第2の固体金属ポストと、を有している基板であって、前記第2の固体金属ポストの各々は、縁面を有し、前記基板は、前記基板の前記上面とは反対側の底面にある端子と、前記基板を貫通して延伸し前記端子を第2の固形金属ポストに電気的に接続する導電性相互接続とを含む、基板と、
を備え、
前記第1の固体金属ポストの直径の、前記複数の第1の固体金属ポストのピッチに対する比率は、3:4を超えず、
前記複数の第1の固体金属ポストおよび前記複数の第2の固体金属ポストは切頭円錐形状を備えたエッチングされたポストであり、
前記可融性金属は、リフローされ、前記第1の固体金属ポストの露出した縁面と前記第2の固体金属ポストの露出した縁面とを濡らし、前記超小型電子素子の前記前面に隣接する前記第1の固体金属ポストの基面から前記基板の前記上面に隣接する前記第2の固体金属ポストの基面に延びる導電性柱を形成するパッケージ化された超小型電子素子。 - 前記第1のポストの各々は、前記第2の金属ポストの直径と等しい直径を有している請求項6に記載のパッケージ化された超小型電子素子。
- 前記基板は、多層基板である請求項6に記載のパッケージ化された超小型電子素子。
- 前記第1のポストの直径は、前記第1のポストの各々間のピッチの半分よりも小さい請求項6に記載のパッケージ化された超小型電子素子。
- パッケージ化された超小型電子素子において、
前面と、前記前面から離れる方に延伸している複数の第1の固体金属ポストと、を有している超小型電子素子であって、各ポストは、前記前面の方向における幅および前記前面から延びる高さと、縁面とを有している、超小型電子素子と、
上面と、前記上面から延伸し、可融性金属によって前記第1の固体金属ポストに接合されている複数の第2の固体金属ポストと、を有している基板であって、前記第2の固体金属ポストの各々は縁面を有し、前記基板は、前記基板の前記上面とは反対側の底面にある端子と、前記基板を貫通して延伸し前記端子を第2の固形金属ポストに電気的に接続する導電性相互接続とを含む、
基板と、
を備え、
前記第1のポストのピッチは、50μmから200μmの範囲内にあり、前記超小型電子素子の前記底面と前記基板の前記上面との間の距離は、80μmよりも大きく、
前記複数の第1の固体金属ポストおよび前記複数の第2の固体金属ポストは切頭円錐形状を備えたエッチングされた金属ポストであり、
前記可融性金属はリフローされて、前記第1の固体金属ポストの露出した縁面と前記第2の固体金属ポストの露出した縁面とを濡らし、前記超小型電子素子の前記前面に隣接する前記第1の固体金属ポストの基面から前記基板の前記上面に隣接する前記第2の固体金属ポストの基面に延びる導電性柱を形成するパッケージ化された超小型電子素子。 - 前記第2のポストを前記第1のポストに接合させるのに、可融性金属が用いられる請求項10に記載のパッケージ化された超小型電子素子。
- 前記第1のポストの各々は、前記第2の金属ポストの直径と等しい直径を有する請求項10に記載のパッケージ化された超小型電子素子。
- 前記第1のポストの直径は、前記第1のポストの各々間のピッチの半分よりも小さい請求項10に記載のパッケージ化された超小型電子素子。
- パッケージ化された超小型電子において、
前面を有する超小型電子素子と、
基板であって、前記基板は、上面と、前記上面とは反対側の底面にある端子と、前記基板を貫通して延伸する導電性相互接続とを含む、基板と、
前記超小型電子素子と前記基板との間に延伸している複数のピラーであって、各々が、前記超小型電子素子に取り付けられた第1の金属ポスト部分と、前記基板に取り付けられた第2の金属ポスト部分と、金属融着部分と、を備え、前記第1の金属部分および前記第2の金属部分は、前記金属融着部分によってリフローされて、前記第1の金属ポストの露出した縁面と前記第2の金属ポストの露出した縁面とを濡らし、前記複数のピラーは、前記超小型電子素子に隣接する前記第1の金属ポスト部分の基面から前記基板の前記上面に隣接する前記第2の金属ポスト部分の基面へ伸びて互いに接合されており、前記複数のピラーは、50μm以上の長さを有しており、前記第1の金属ポスト部分の高さは各第1の金属ポスト部分の幅の少なくとも半分であり、前記第2の金属ポスト部分の高さは各第2の金属ポスト部分の幅の少なくとも半分である、複数のピラーと、
を備え、
前記導電性相互接続は、前記端子を前記第2の固体金属ポスト部分に電気的に接続し、
少なくとも、前記複数の第1の金属ポスト部分の1つおよび前記複数の第2の金属ポスト部分の1つは切頭円錐形状を備えたエッチングされた金属ポストであるパッケージ化された超小型電子素子。 - 前記超小型電子素子の前記前面と前記基板の前記上面との間の距離は、80μmよりも大きい請求項14に記載のパッケージ化された超小型電子素子。
- 前記基板は、多層基板である請求項14に記載のパッケージ化された超小型電子素子。
- 前記第1の金属ポスト部分の各々は、前記第2の金属ポスト部分の直径と等しい直径を有している請求項14に記載のパッケージ化された超小型電子素子。
- 前記第1の金属ポスト部分の直径は、前記第1の金属ポスト部分の各々間のピッチの半分よりも小さい請求項14に記載のパッケージ化された超小型電子素子。
- 前記複数の第1および第2の金属ポスト部分は、エッチングによって形成される請求項14に記載のパッケージ化された超小型電子素子。
- パッケージ化された超小型電子素子を組み立てる方法において、
(a)超小型電子素子の第1の面から離れる方に延伸している複数の第1の固体金属ポストを有している超小型電子素子を設けるステップであって、前記第1の固体金属ポストは、上面および前記上面から離れる方に急角度で延伸している縁面を有しており、可融性金属キャップが前記複数の第1の固体金属ポストの各々の端に取り付けられている、ステップと、
(b)前記超小型電子素子の前記第1の固体金属ポストを基板の第1の面から延伸している複数の第2の固体金属ポストに少なくとも実質的に一直線に並べるステップであって、前記第2の固体金属ポストは、縁面を有している、ステップと、
(c)前記超小型電子素子の前面に隣接する前記第1の固体金属ポストの基面から前記基板の前記上面に隣接する前記第2の固体金属ポストの基面に延びる導電性柱を形成するように、前記可融性金属キャップを溶融温度まで加熱し、前記溶融した可融性金属を前記第1及び第2の固体金属ポストの前記縁面の露出した部分にリフローされることにより前記超小型電子素子の前記第1の固体金属ポストを前記基板の前記第2の固体金属ポストに接合するステップと、
を含み、
前記基板は、前記基板の前記上面とは反対側の底面にある端子と、前記基板を貫通して延伸し前記端子を第2の固体金属ポストに電気的に接続する導電性相互接続とを含み、
前記複数の第1の固体金属ポストはエッチングされた金属ポストであり、前記複数の第2の固体金属ポストは切頭円錐形状を備えたエッチングされた金属ポストである、
方法。 - 保護層およびアンダーバンプ金属化層が、前記超小型電子素子の上方に堆積されている請求項20に記載の方法。
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| US99584907P | 2007-09-28 | 2007-09-28 | |
| US60/995,849 | 2007-09-28 | ||
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- 2008-09-26 WO PCT/US2008/011271 patent/WO2009045371A2/en not_active Ceased
- 2008-09-26 EP EP13164353.8A patent/EP2637202A3/en not_active Withdrawn
- 2008-09-26 KR KR1020107008921A patent/KR101388538B1/ko not_active Expired - Fee Related
- 2008-09-26 CN CN201510507995.5A patent/CN105140134A/zh active Pending
- 2008-09-26 EP EP08835829A patent/EP2206145A4/en not_active Withdrawn
-
2010
- 2010-12-10 US US12/965,172 patent/US8884448B2/en active Active
-
2014
- 2014-11-04 US US14/532,396 patent/US20150054153A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| EP2206145A2 (en) | 2010-07-14 |
| EP2637202A3 (en) | 2014-03-12 |
| US8884448B2 (en) | 2014-11-11 |
| US20110074027A1 (en) | 2011-03-31 |
| US20090146303A1 (en) | 2009-06-11 |
| KR101388538B1 (ko) | 2014-04-23 |
| EP2206145A4 (en) | 2012-03-28 |
| KR20100092428A (ko) | 2010-08-20 |
| US8558379B2 (en) | 2013-10-15 |
| CN101874296A (zh) | 2010-10-27 |
| JP2010541244A (ja) | 2010-12-24 |
| US20150054153A1 (en) | 2015-02-26 |
| EP2637202A2 (en) | 2013-09-11 |
| CN101874296B (zh) | 2015-08-26 |
| CN105140134A (zh) | 2015-12-09 |
| WO2009045371A2 (en) | 2009-04-09 |
| WO2009045371A3 (en) | 2009-05-22 |
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