JP5477372B2 - 機能素子内蔵基板、及びその製造方法、並びに電子機器 - Google Patents
機能素子内蔵基板、及びその製造方法、並びに電子機器 Download PDFInfo
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- JP5477372B2 JP5477372B2 JP2011503664A JP2011503664A JP5477372B2 JP 5477372 B2 JP5477372 B2 JP 5477372B2 JP 2011503664 A JP2011503664 A JP 2011503664A JP 2011503664 A JP2011503664 A JP 2011503664A JP 5477372 B2 JP5477372 B2 JP 5477372B2
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- main surface
- functional element
- insulating layer
- connection conductor
- surface side
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Description
図1に本実施形態1に係る機能素子内蔵基板101の模式的端面図を示す。同図に示すように、本実施形態1に係る機能素子内蔵基板101は、機能素子1、絶縁層10、第1接続導体21、第2接続導体22を備える。
但し、E(b)は、下記式(2)、E(a)は下記式(3)、α(a)は下記式(4)、α(b)は下記式(5)を満足するものである。また、αsは、機能素子1の線熱膨張係数を示す。
但し、Av(1)は、機能素子1の第1主面1A側に配設された第1接続導体21の第1主面1A上に占める面積を示し、Af(1)は、機能素子1の第1主面1Aの面積を示し、Ev(1)は、機能素子1の第1主面1A側に配設された第1接続導体21の電極材料の弾性率を示し、Ei(1)は、機能素子1の第1主面1A側に配設された絶縁層10の弾性率を示す。
但し、Av(2)は、機能素子1の第2主面1B側に配設された第2接続導体22の第2主面1B上に占める面積を示し、Af(2)は、機能素子1の第2主面1Bの面積を示し、Ev(2)は、機能素子1の第2主面1B側に配設された第2接続導体22の電極材料の弾性率を示し、Ei(2)は、機能素子1の第2主面1B側に配設された絶縁層10の弾性率を示す。なお、本実施形態1においては、機能素子1の第1主面1A側と第2主面1B側の絶縁層1を同一材料により構成したので、Ei(1)=Ei(2)となる。なお、第1主面1A側の絶縁層と第2主面1B側の絶縁層を別の材料により構成してもよい。
但し、αv(1)は、機能素子1の第1主面1A側に配設された第1接続導体21の電極材料の線形熱膨張係数を示し、αi(1)は、機能素子1の第1主面1A側に配設された絶縁層10の線形熱膨張係数を示す。
但し、αv(2)は、機能素子1の第2主面1B側に配設された第2接続導体22の電極材料の線形熱膨張係数を示し、αi(2)は、機能素子1の第2主面1B側に配設された絶縁層10の線形熱膨張係数を示す。なお、本実施形態1においては、機能素子1の第1主面1A側と第2主面1B側の絶縁層10の弾性率は等しいので、αi(1)=αi(2)となる。
線熱膨張係数の値を考慮した上記式(1)を満足することがより好ましいが、上記式(6)によれば、より簡便に機能素子1の絶縁層10中の配設位置を決定できるというメリットを有する。α(a)とα(b)の差が大きくない場合において、特に式(6)は有効である。
[実施形態2]
また、上記式(6)も同様にして、下記式(8)のように表すこともできる。
本実施形態3に係る機能素子内蔵基板103は、以下の点を除く基本的な構造は、上記実施形態2と同様である。すなわち、上記実施形態2においては、機能素子1の側壁外周部に絶縁層のみが配設されていたのに対し、本実施形態3においては、機能素子1の側壁外周部に補強材40が配設されている点において相違する。
本実施形態4に係る機能素子内蔵基板104は、以下の点を除く基本的な構造は、上記実施形態3と同様である。すなわち、上記実施形態3においては、機能素子1と略同一高さの補強材40を配設していたのに対し、本実施形態4においては、機能素子1の高さよりも小さい厚みの補強材が、機能素子の高さ方向の中央近傍と対向するように配設されている点において相違する。
本実施形態5に係る機能素子内蔵基板105は、以下の点を除く基本的な構造は、上記実施形態2と同様である。すなわち、上記実施形態2においては、絶縁層10aの第1表面10Aに配線層が形成されていなかったが、本実施形態5においては、絶縁層の上層に配線層が形成されている点において相違する。
本実施形態6に係る機能素子内蔵基板106は、以下の点を除く基本的な構造は、上記実施形態5と同様である。すなわち、上記実施形態5においては、絶縁層10gの第1表面10Aに第1配線層31を配設していたが、本実施形態6においては、絶縁層の第1表面10A及び第2表面10Bの両側に配線層が配設されている点において相違する。
本実施形態7に係る機能素子内蔵基板107は、以下の点を除く基本的な構造は、上記実施形態2と同様である。すなわち、上記実施形態2においては、絶縁層10aの第1表面10Aに接続端子や電子部品が配設されていなかったが、本実施形態7においては、絶縁層の第1表面10A上に接続端子や電子部品が配設されている点において相違する。
本実施形態8に係る機能素子内蔵基板108は、以下の点を除く基本的な構造は、上記実施形態7と同様である。すなわち、上記実施形態7においては、絶縁層10iの第2表面10Bに接続端子や電子部品が配設されていなかったが、本実施形態8においては、絶縁層の第2表面10B上に接続端子や電子部品が配設されている点において相違する。
本実施形態9に係る機能素子内蔵基板109は、以下の点を除く基本的な構造は、上記実施形態6と同様である。すなわち、上記実施形態6においては、補強材を配設していなかったのに対し、本実施形態9においては、補強材を配設している点において相違する。
1A 第1主面
1B 第2主面
2 電子部品
3 電子部品
10 絶縁層
11 第1絶縁層
12 第2絶縁層
13 第3絶縁層
21 第1接続導体
22 第2接続導体
31 第1配線層
32 第2配線層
35 ビア
36 接続端子
40 補強材
50 積層体
51 封止材
60 支持体
101〜109 機能素子内蔵基板
Claims (12)
- 機能素子と、
前記機能素子を埋設する絶縁層と、
前記絶縁層の上部、若しくは前記絶縁層の主面に露出する導電体と前記機能素子とを接続するための接続導体と、
を備え、
反り量低減手段として、前記機能素子の第1主面上に形成された前記接続導体の高さTv(1)と、前記機能素子の前記第1主面とは反対側の第2主面に対する上方に前記導電体が設けられている場合には前記第2主面から当該導電体までの離間距離Tv(2)、前記第2主面に対する上方に前記導電体が設けられていない場合には前記第2主面から当該第2主面側の前記絶縁層の表面までの離間距離Tv(2)の比率を調整する手段を適用し、
前記Tv(1)と前記Tv(2)の比率が、実質的に下記式(1)を満足している機能素子内蔵基板。
- 機能素子と、
前記機能素子を埋設する絶縁層と、
前記絶縁層の上部、若しくは前記絶縁層の主面に露出する導電体と前記機能素子とを接続するための接続導体と、
を備え、
反り量低減手段として、前記機能素子の第1主面上に形成された前記接続導体の高さTv(1)と、前記機能素子の前記第1主面とは反対側の第2主面に対する上方に前記導電体が設けられている場合には前記第2主面から当該導電体までの離間距離Tv(2)、前記第2主面に対する上方に前記導電体が設けられていない場合には前記第2主面から当該第2主面側の前記絶縁層の表面までの離間距離Tv(2)の比率を調整する手段を適用し、
前記Tv(1)と前記Tv(2)の比率が、実質的に下記式(6)を満足している機能素子内蔵基板。
- 前記接続導体は、前記機能素子の前記第1主面側にのみ配設されていることを特徴とする請求項1又は2に記載の機能素子内蔵基板。
- 前記接続導体の配置は、エリア配置であることを特徴とする請求項1〜3のいずれか1項に記載の機能素子内蔵基板。
- 前記絶縁層が一種類の材料により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項に記載の機能素子内蔵基板。
- 前記機能素子の側壁近傍に補強材が配設されていることを特徴とする請求項1〜5のいずれか1項に記載の機能素子内蔵基板。
- 前記補強材の弾性率が、1GPa以上、1000GPa以下であることを特徴とする請求項6に記載の機能素子内蔵基板。
- 前記補強材の少なくとも一部に補強繊維を含むことを特徴とする請求項6又は7に記載の機能素子内蔵基板。
- 請求項1〜8のいずれか1項に記載の機能素子内蔵基板を搭載した電子機器。
- 前記機能素子内蔵基板は、多層配線構造の少なくとも一部に配設されていることを特徴とする請求項9に記載の電子機器。
- 機能素子を用意し、
前記機能素子の第1主面、及び前記第1主面とは反対側に位置する第2主面のうちの少なくとも前記第1主面上に接続導体を配設し、
前記機能素子を絶縁層に埋設し、
反り量を低減するように、研磨、若しくは研削して、前記機能素子の前記第1主面上に形成された前記接続導体の高さTv(1)と、
前記第2主面に対する上方に導電体を設ける場合には前記第2主面から当該導電体までの離間距離Tv(2)、前記第2主面に対する上方に前記導電体を設けない場合には前記第2主面から当該第2主面側の前記絶縁層の表面までの離間距離Tv(2)と、の比率が、実質的に下記式(1)を満足するように、前記接続導体の高さを調整する機能素子内蔵基板の製造方法。
- 機能素子を用意し、
前記機能素子の第1主面、及び前記第1主面とは反対側に位置する第2主面のうちの少なくとも前記第1主面上に接続導体を配設し、
前記機能素子を絶縁層に埋設し、
反り量を低減するように、研磨、若しくは研削して、前記機能素子の前記第1主面上に形成された前記接続導体の高さTv(1)と、
前記第2主面に対する上方に導電体を設ける場合には前記第2主面から当該導電体までの離間距離Tv(2)、前記第2主面に対する上方に前記導電体を設けない場合には前記第2主面から当該第2主面側の前記絶縁層の表面までの離間距離Tv(2)と、の比率が、実質的に下記式(6)を満足するように、前記接続導体の高さを調整する機能素子内蔵基板の製造方法。
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JP2008098366A (ja) * | 2006-10-11 | 2008-04-24 | Shinko Electric Ind Co Ltd | 電子部品内蔵基板および電子部品内蔵基板の製造方法 |
JP2008311397A (ja) * | 2007-06-14 | 2008-12-25 | Nec Toppan Circuit Solutions Inc | 半導体素子の実装構造、印刷配線板及びその製造方法 |
JP2011151048A (ja) * | 2008-05-13 | 2011-08-04 | Panasonic Corp | 電子部品の製造方法および電子部品 |
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