JP4130668B2 - 基体の加工方法 - Google Patents
基体の加工方法 Download PDFInfo
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- JP4130668B2 JP4130668B2 JP2005159364A JP2005159364A JP4130668B2 JP 4130668 B2 JP4130668 B2 JP 4130668B2 JP 2005159364 A JP2005159364 A JP 2005159364A JP 2005159364 A JP2005159364 A JP 2005159364A JP 4130668 B2 JP4130668 B2 JP 4130668B2
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- temperature
- electrode
- insulating film
- substrate
- semiconductor chip
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Description
(1)基体1へペースト状導電材料を供給し、突起電極を形成する(例えば、印刷法)。
(2)導電材料を半硬化させる(例えば、80℃で30分)。
(3)絶縁材料をコートする。
(4)絶縁材料を半硬化させる(例えば、110℃で30分)。
(5)切削加工を行う(例えば、50℃)
(6)基体1と基体2とを接続する(例えば、150℃で5秒)。
(1)絶縁性接着材を堆積する(例えば、スピンコート法)。
(2)絶縁性接着材を半硬化させる(例えば、110℃で30分)
(3)絶縁性接着材に開口を形成する(例えば、露光−現像)。
(4)開口へ導電材料を埋め込む(例えば、印刷法)。
(5)導電性材料を半硬化させる(例えば、80℃で30分)。
(6)切削加工を行う(例えば50℃)
(7)基体1と基体2とを接続する(例えば、190℃で5秒)。
(1)基体1へペースト状導電材料を供給して突起電極を形成する(例えば、印刷法)。
(2)導電材料を半硬化させる(例えば、80℃で30分)。
(3)第1の絶縁材料をコートする。
(4)第1の絶縁材料を半硬化させる(例えば、110℃で30分)
(5)第2の絶縁材料をコートする。
(6)第2の絶縁材料を半硬化させる(例えば、100℃で30分)。
(7)切削加工を行う(例えば、50℃)。
(8)基体1と基体2とを接続する(例えば、150℃5秒)。
本発明では、CMP法に替わり、基体上に形成された多数の電極の表面を安価に高速で一斉に平坦化する手法として、ダイヤモンド等からなる硬質バイトを用いた切削加工を適用する。この切削加工によれば、基体表面上で絶縁膜内に電極が埋め込み形成されているような場合でも、CMP法のように金属と絶縁物の研磨速度等に依存することなく、基板上で一斉に金属と絶縁膜とを連続して切削し、ディッシング等を発生せしめることなく全体的に両者を均一に平坦化することができる。
以下、本発明を適用した具体的な諸実施形態について、図面を参照しながら詳細に説明する。
本発明の第1実施形態による半導体装置の製造方法について図1及び図2を用いて説明する。図1は、第1実施形態による半導体装置の製造方法を、工程順に示す概略断面図である。
本発明の第2実施形態による半導体装置の製造方法について図3を用いて説明する。図3は、第2実施形態による半導体装置の製造方法を工程順に示す概略断面図である。
本発明の第3実施形態による半導体装置の製造方法について図4を用いて説明する。図4は、第3実施形態による半導体装置の製造方法を工程順に示す概略断面図である。
本発明の第4実施形態による半導体装置の製造方法について図5を用いて説明する。図5は、第4実施形態による半導体装置の製造方法を工程順に示す概略断面図である。
本発明の第5実施形態による半導体装置の製造方法について図6及び図7を用いて説明する。図6及び図7は、第5実施形態による半導体装置の製造方法を工程順に示す概略断面図である。
本発明の第6実施形態による半導体装置の製造方法について図8乃至図18を用いて説明する。
本発明の第7実施形態による半導体装置の製造方法について図19乃至図26を用いて説明する。なお、図1乃至図18に示す第1乃至第6実施形態による半導体装置の製造方法と同様の構成要素には同一の符号を付し説明を省略し或いは簡潔にする。
前記絶縁膜に、開口を形成する工程と、
第1の温度以上で接着性を発現する導電材料を前記開口内に埋め込むように堆積し、第1の電極を形成する工程と、
前記第1の温度及び前記第2の温度のうちの低温よりも低い温度に保持しながら、バイトを用いた切削加工により、前記第1の電極の表面及び前記絶縁膜の表面が連続して平坦となるように処理する工程と、
前記第1の温度及び前記第2の温度のうちの高温以上の温度に加熱し、表面に複数の第2の電極が形成されてなる第2の基体に前記第1の基体を前記第1の電極と前記第2の電極とが接触するように対向させ、前記第1の基体と前記第2の基体とを前記絶縁膜により接続するとともに、前記第2の電極と前記第2の電極との間に電気的接続を生ぜしめる工程と
を含むことを特徴とする基体の加工方法。
前記絶縁材料は、常温では固体で接着性を示さず、前記第2の温度に達すると軟化して接着性を発現するものであることを特徴とする付記1又は2に記載の基体の加工方法。
前記第1の基体の温度を前記第1の温度及び前記第2の温度のうちの低値よりも低い温度に設定し、前記第2の基体の温度を前記第1の温度及び前記第2の温度のうちの高値よりも高い温度に設定する工程と、
前記設定された温度において、前記第1の電極と前記第2の電極とを対向接触させ、前記絶縁膜及び前記第1の電極を前記第1の温度及び前記第2の温度のうちの高値以上にして前記第1の基体と前記第2の基体とを接続する工程と
を含むことを特徴とする付記1乃至3のいずれか1項に記載の基体の加工方法。
前記第1の温度及び前記第2の温度のうちの高値以上で、前記絶縁膜による前記第1の基体と前記第2の基体との接続及び前記第1の電極と前記第2の電極との接続を同時に行うことを特徴とする付記1乃至3のいずれか1項に記載の基体の加工方法。
前記第1の温度及び前記第2の温度のうちの高値以上で、前記第1の電極と前記第2の電極とを所定の圧力で対向接触させ、前記第1の電極を軟化させて前記第2の電極に接続させるとともに、前記絶縁膜を軟化させて前記第1の基体と前記第2の基体との間を充填させ、前記第1の基体と前記第2の基体とを接続することを特徴とする付記1乃至5のいずれか1項に記載の基体の加工方法。
前記絶縁材料は、前記第2の温度よりも高い第4の温度以上で固化し、接着性を消失する熱硬化性材料であることを特徴とする付記1乃至6のいずれか1項に記載の基体の加工方法。
前記絶縁膜に、開口を形成する工程と、
第1の温度以上で接着性を発現する導電材料を前記開口内に埋め込むように堆積し、第1の電極を形成する工程と、
前記第1の温度及び前記第2の温度のうちの低値よりも低い温度に保持しながら、バイトを用いた切削加工により、前記第1の電極の表面及び前記絶縁膜の表面が連続して平坦となるように処理する工程と、
前記第1の温度及び前記第2の温度のうちの高値以上の温度に加熱し、表面に複数の第2の電極が形成されてなる第2の基体に前記第1の基体を前記第1の電極と前記第2の電極とが接触するように対向させ、前記第1の基体と前記第2の基体とを前記絶縁膜により接続するとともに、前記第2の電極と前記第2の電極との間に電気的接続を生ぜしめる工程と
を含むことを特徴とする基体の加工方法。
前記絶縁材料は、常温では固体で接着性を示さず、前記第2の温度に達すると軟化して接着性を発現するものであることを特徴とする付記11乃至13のいずれか1項に記載の基体の加工方法。
前記第1の基体の温度を前記第1の温度及び前記第2の温度のうちの低値よりも低い温度に設定し、前記第2の基体の温度を前記第1の温度及び前記第2の温度のうちの高値よりも高い温度に設定する工程と、
前記設定された温度において、前記第1の電極と前記第2の電極とを対向接触させ、前記絶縁膜及び前記第1の電極を前記第1の温度及び前記第2の温度のうちの高値以上にして前記第1の基体と前記第2の基体とを接続する工程と
を含むことを特徴とする付記11乃至14のいずれか1項に記載の基体の加工方法。
前記第1の温度及び前記第2の温度のうちの高値以上で、前記絶縁膜による前記第1の基体と前記第2の基体との接続及び前記第1の電極と前記第2の電極との接続を同時に行うことを特徴とする付記11乃至14のいずれか1項に記載の基体の加工方法。
前記第1の温度及び前記第2の温度のうちの高値以上で、前記第1の電極と前記第2の電極とを所定の圧力で対向接触させ、前記第1の電極を軟化させて前記第2の電極に接続させるとともに、前記絶縁膜を軟化させて前記第1の基体と前記第2の基体との間を充填させ、前記第1の基体と前記第2の基体とを接続することを特徴とする付記11乃至16のいずれか1項に記載の基体の加工方法。
前記導電材料及び前記絶縁材料は、それぞれ前記第1の温度よりも高い第2の温度以上で固化し、接着性を消失するものであることを特徴とする付記11乃至17のいずれか1項に記載の基体の加工方法。
方法。
前記第1の基体表面に、第2の温度以上にて接着性を発現する第1の絶縁材料からなる第1の絶縁膜を第1の電極の高さよりも低くなるように被覆する工程と、
前記第1の電極上を含む前記第1の絶縁膜上に、第3の温度以上にて接着性を発現する第2の絶縁材料からなる第2の絶縁膜を被覆する工程と、
前記第1の温度、前記第2の温度及び前記第3の温度のうちの最低値よりも低い温度に保持しながら、バイトを用いた切削加工により、前記第1の電極の表面及び前記第2の絶縁膜の表面が連続して平坦となるように処理する工程と、
前記第1の基体の、前記第1の電極が形成された面上に、前記第1の電極に対応する第2の電極が形成された第2の基体を対向配置する工程と、
前記第1の温度、前記第2の温度及び前記第3の温度のうちの最高値以上の温度に加熱し、前記第1の絶縁膜及び前記第2の絶縁膜からなる絶縁膜によって前記第1の基体と第2の基体とを接続すると共に、前記第1の電極と第2の電極を電気的に接続する工程を含むことを特徴とする基体の加工方法。
前記第2の絶縁材料は、第5の温度以上で前記第1の絶縁材料及び前記第2の基体の双方との固着強度を発現する材料であることを特徴とする付記22に記載の基体の加工方法。
前記第1の絶縁材料は、常温では固体で接着性を示さず、前記第2の温度に達すると軟化して接着性を発現するものであり、
前記第2の絶縁材料は、常温では固体で接着性を示さず、前記第3の温度に達すると軟化して接着性を発現するものであることを特徴とする付記22乃至24のいずれか1項に記載の基体の加工方法。
前記第1の基体の温度を前記第1の温度、前記第2の温度及び前記第3の温度のうちの最低値よりも低い温度に設定し、前記第2の基体の温度を前記第1の温度、前記第2の温度及び前記第3の温度のうちの最高値よりも高い温度に設定する工程と、
前記設定された温度において、前記第1の電極と前記第2の電極とを対向接触させ、前記絶縁膜及び前記第1の電極を前記第1の温度、前記第2の温度及び前記第3の温度のうちの最高値以上にして前記第1の基体と前記第2の基体とを接続する工程と
を含むことを特徴とする付記22乃至25のいずれか1項に記載の基体の加工方法。
前記第1の温度、前記第2の温度及び前記第3の温度のうちの最高値以上で、前記絶縁膜による前記第1の基体と前記第2の基体との接続及び前記第1の電極と前記第2の電極との接続を同時に行うことを特徴とする付記22乃至25のいずれか1項に記載の基体の加工方法。
前記第1の温度、前記第2の温度及び前記第3の温度のうちの最高値以上で、前記第1の電極と前記第2の電極とを所定の圧力で対向接触させ、前記第1の電極を軟化させて前記第2の電極に接続させるとともに、前記第2の絶縁膜を軟化させて前記第1の基体と第2の基体との間を充填させ、前記第1の基体と前記第2の基体とを接続することを特徴とする付記22乃至27のいずれか1項に記載の基体の加工方法。
前記第1の絶縁材料は、前記第1の温度よりも高い第4の温度以上で固化し、接着性を消失するものであり、
前記第2の絶縁材料は、前記第1の温度よりも高い第5の温度以上で固化し、接着性を消失するものであることを特徴とする付記22乃至28のいずれか1項に記載の基体の加工方法。
前記第1の絶縁材料は、前記第2の温度以上で前記第4の温度未満の温度に複数回晒された後でも、硬化することなく接着性を保つ材料であり、
前記第2の絶縁材料は、前記第3の温度以上で前記第5の温度未満の温度に複数回晒された後でも、硬化することなく接着性を保つ材料であることを特徴とする付記22乃至30のいずれか1項に記載の基体の加工方法。
前記第1の温度及び前記第2の温度のうちの低値よりも低い温度に保持しながら、バイトを用いた切削加工により、前記第1の電極の表面及び前記第2の絶縁膜の表面が連続して平坦となるように平坦化処理する工程と、
前記第1の温度及び前記第2の温度のうちの高温以上の温度に加熱し、表面に複数の第2の電極が形成されてなる第2の基体に前記第1の基体を前記第1の電極と前記第2の電極とが接触するように対向させ、前記第1の基体と前記第2の基体とを前記第2の絶縁膜により接続するとともに、前記第1の電極と前記第2の電極との間に電気的接続を生ぜしめる工程と
を含むことを特徴とする基体の加工方法。
を発現する材料であり、
前記第2の絶縁材料は、前記第4の温度以上で前記第1の絶縁材料及び前記第2の基体の双方との接着性を発現する材料であることを特徴とする付記37に記載の基体の加工方法。
表面に複数の第2の電極が形成されてなる第2の基体と
を含み、
前記第1の絶縁膜は、前記第1の温度以上で前記第1の基体との接着性を発現する絶縁材料からなるとともに、前記第2の絶縁膜は、前記第2の温度以上で前記第1の絶縁材料及び前記第2の基体の双方との接着性を発現する絶縁材料からなり、
前記第1の基体と前記第1の基体とは、前記第2の絶縁膜により接合されて一体化されるとともに、前記第1の電極と前記第2の電極とが電気的に接続されてなることを特徴とする接合基体。
前記バンプ電極が形成された領域の前記第1の基体上に、接着性を有する導電材料を堆積し、前記バンプ電極が前記導電材料により覆われてなる第1の電極を形成する工程と、
前記第1の基体上に、接着性を有する絶縁材料からなる絶縁膜を形成する工程と、
前記第1の電極及び前記絶縁膜が形成された前記第1の基体の表面を切削加工し、前記表面に前記第1の電極を露出させるとともに、前記表面を平坦化する工程と、
前記第1の基体の前記表面に、前記第1の電極に対応する第2の電極が形成された第2の基体を対向させ、前記導電材料及び前記絶縁材料が接着性を発現する温度で加熱することにより、前記第1の基体と前記第2の基体とを接続するとともに、前記第1の電極と前記第2の電極を電気的に接続する工程と
を有することを特徴とする基体の加工方法。
前記バンプ電極を形成する工程では、ボールボンディングにより前記バンプ電極を形成する
ことを特徴とする基体の加工方法。
前記バンプ電極を形成する工程では、電界メッキにより前記バンプ電極を形成する
ことを特徴とする基体の加工方法。
前記バンプ電極を形成する工程では、金又は金を主体とする合金により前記バンプ電極を形成する
ことを特徴とする基体の加工方法。
前記絶縁膜を形成する工程では、前記第1の電極上を覆うように、前記絶縁膜を形成する
ことを特徴とする基体の加工方法。
前記絶縁膜を形成する工程では、前記第1の電極を形成する領域を除く前記第1の基体上に、前記絶縁膜を形成する
ことを特徴とする基体の加工方法。
第2の基体上に、磁化されている第2の磁性材料が含有された第2の磁性体パターンを形成する工程と、
前記第1の磁性体パターン形成された前記第1の基体の面と前記第2の磁性体パターンが形成された前記第2の基体の面とを対向させ、前記第1の磁性体パターンと前記第2の磁性体パターンとの間に働く磁力により前記第1の基体と前記第2の基体とを位置合わせし、前記第1の基体と前記第2の基体とを接続する工程と、
前記第2の磁性材料のキュリー点よりも高い温度で熱処理を行い、前記第2の磁性材料の磁化を消失させる工程と
を有することを特徴とする基体の加工方法。
前記第1の磁性体パターンを形成する工程は、
接着性を有する樹脂中に前記第1の磁性材料の微粒子を含有してなる磁性体ペーストを前記第1の基体上に堆積する工程と、
前記第1の磁性材料のキュリー点よりも高い温度で熱処理を行い、前記第1の磁性材料の磁化を消失させるとともに、前記磁性体ペーストを半硬化して前記第1の磁性体パターンを形成する工程とを有する
ことを特徴とする基体の加工方法。
前記第2の磁性体パターンを形成する工程は、
接着性を有する樹脂中に前記第2の磁性材料の微粒子を含有してなる磁性体ペーストを前記第2の基体上に堆積する工程と、
前記第2の磁性材料のキュリー点よりも低い温度で熱処理を行い、前記磁性体ペーストを半硬化して前記第2の磁性体パターンを形成する工程とを有する
ことを特徴とする基体の加工方法。
前記第1の基体上に第1の電極を形成する工程と、
前記第1の電極及び前記第1の磁性体パターンが形成された前記第1の基体上に絶縁膜を形成する工程と、
前記第1の電極、前記第1の磁性体パターン及び前記絶縁膜が形成された前記第1の基体の表面を切削加工し、前記表面に前記第1の電極及び前記第1の磁性体パターンを露出させるとともに、前記表面を平坦化する工程と
を更に有することを特徴とする基体の加工方法。
前記第1の電極を形成する工程は、接着性を有する樹脂中に導電材料の微粒子を練入した導電性ペーストを前記第1の基体上に堆積する工程と、熱処理により前記導電性ペーストを半硬化して前記第1の電極を形成する工程とを有し、
前記第絶縁膜を形成する工程は、接着性を有する絶縁材料を前記第1の基体上に形成する工程と、熱処理により前記絶縁材料を半硬化して前記絶縁膜を形成する工程とを有し、
前記第1の基体と前記第2の基体とを接続する工程は、半硬化した前記第1の電極及び前記絶縁膜が軟化して接着性を発現する温度にて行い、
前記第2の磁性材料の磁化を消失させる工程は、前記第1の電極及び前記絶縁膜が硬化する温度にて行う
ことを特徴とする基体の加工方法。
前記第1の基体と前記第2の基体とを接続する工程において、前記第1の磁性体パターンと前記第2の磁性体パターンとの間に働く磁力により前記第1の基体と前記第2の基体とを位置合わせすることにより、前記第1の基体上に形成された第1の電極と前記第2の基体上に形成された第2の電極とが接続されるように、前記第1の磁性体パターンと前記第2の磁性体パターンとを配置する
ことを特徴とする基体の加工方法。
前記第1の磁性体パターンと前記第2の磁性体パターンは、互いに鏡像をなすパターンを有する
ことを特徴とする基体の加工方法。
ことを特徴とする半導体装置。
前記半導体基板上に形成され、導電材料が含有された樹脂材料からなる電極を更に有し、
前記磁性材料のキュリー点は、前記電極が半硬化する温度よりも低い
ことを特徴とする半導体装置。
1a…半導体チップ
2,6…絶縁膜
2a,10a,15,31a,41a,51a,52a,53a,58a,58b…開口
3…電極パッド(金属層3)
4…金属バンプ(金属層4)
5,7,33…電極
8…回路基板
9…スタッドバンプ
10,53,58…メタルマスク
11…Agペースト
12…スキージ
13…バリアメタル
14…フォトレジスト膜
16…バンプ電極
20…半導体ウェーハ
21…基板支持台(回転テーブル)
22…切削部
23…第1の絶縁膜
24…第2の絶縁膜
31…レジストマスク
32…Auペースト
42,52…フォトマスク
51…感光性樹脂
54…RFIDアンテナ部
55…アンテナ
55a…アンテナ端子
57…基材
59…磁性体ペースト
60a,60b,61a,61b…磁性体パターン
100…バイト
Claims (8)
- 第1の基体の表面に、第1の温度以上の温度にて接着性を発現する導電材料を用いて、突起状を有する第1の電極を形成する工程と、
前記第1の電極上を含んで、前記第1の基体表面に、第2の温度以上にて接着性を発現する絶縁材料からなる絶縁膜を被覆する工程と、
前記第1の温度及び前記第2の温度のうちの低値よりも低い温度に保持しながら、バイトを用いた切削加工により、前記第1の電極の表面及び前記絶縁膜の表面が連続して平坦となるように処理する工程と、
前記第1の基体の、前記第1の電極が形成された面上に、前記第1の電極に対応する第2の電極が形成された第2の基体を対向配置する工程と、
前記第1の温度及び前記第2の温度のうちの高値以上の温度に加熱し、前記絶縁膜によって前記第1の基体と第2の基体とを接続すると共に、前記第1の電極と前記第2の電極を電気的に接続する工程と
を含むことを特徴とする基体の加工方法。 - 第1の基体上に、第2の温度以上で接着性を発現する絶縁材料を堆積して絶縁膜を形成する工程と、
前記絶縁膜に、開口を形成する工程と、
第1の温度以上で接着性を発現する導電材料を前記開口内に埋め込むように堆積し、第1の電極を形成する工程と、
前記第1の温度及び前記第2の温度のうちの低値よりも低い温度に保持しながら、バイトを用いた切削加工により、前記第1の電極の表面及び前記絶縁膜の表面が連続して平坦となるように処理する工程と、
前記第1の温度及び前記第2の温度のうちの高値以上の温度に加熱し、表面に複数の第2の電極が形成されてなる第2の基体に前記第1の基体を前記第1の電極と前記第2の電極とが接触するように対向させ、前記第1の基体と前記第2の基体とを前記絶縁膜により接続するとともに、前記第1の電極と前記第2の電極との間に電気的接続を生ぜしめる工程と
を含むことを特徴とする基体の加工方法。 - 前記導電材料は、常温では固体で接着性を示さず、前記第1の温度に達すると軟化して接着性を発現するものであり、
前記絶縁材料は、常温では固体で接着性を示さず、前記第2の温度に達すると軟化して接着性を発現するものである
ことを特徴とする請求項1又は2記載の基体の加工方法。 - 前記第1の基体と前記第2の基体とを対向させて接続する工程は、
前記第1の基体の温度を前記第1の温度及び前記第2の温度のうちの低値よりも低い温度に設定し、前記第2の基体の温度を前記第1の温度及び前記第2の温度のうちの高値よりも高い温度に設定する工程と、
前記設定された温度において、前記第1の電極と前記第2の電極とを対向接触させ、前記絶縁膜及び前記第1の電極を前記第1の温度及び前記第2の温度のうちの高値以上にして前記第1の基体と前記第2の基体とを接続する工程と
を含むことを特徴とする請求項1乃至3のいずれか1項に記載の基体の加工方法。 - 前記導電材料は、前記第1の温度よりも高い第3の温度以上で固化し、接着性を消失する熱硬化性材料であり、
前記絶縁材料は、前記第2の温度よりも高い第4の温度以上で固化し、接着性を消失する熱硬化性材料であり、
前記第1の電極と前記第2の電極とを電気的に接続する工程の後に、前記第3の温度及び前記第4の温度のうちの高値以上の温度で加熱することにより、前記導電材料及び前記熱硬化性材料を固化する工程を更に有する
ことを特徴とする請求項1乃至4のいずれか1項に記載の基体の加工方法。 - 第1の基体の表面に第1の温度以上の温度にて接着性を発現する導電材料を用いて突起状を有する第1の電極を形成する工程と、
前記第1の基体表面に、第2の温度以上にて接着性を発現する第1の絶縁材料からなる第1の絶縁膜を第1の電極の高さよりも低くなるように被覆する工程と、
前記第1の電極上を含む前記第1の絶縁膜上に、第3の温度以上にて接着性を発現する第2の絶縁材料からなる第2の絶縁膜を被覆する工程と、
前記第1の温度、前記第2の温度及び前記第3の温度のうちの最低値よりも低い温度に保持しながら、バイトを用いた切削加工により、前記第1の電極の表面及び前記第2の絶縁膜の表面が連続して平坦となるように処理する工程と、
前記第1の基体の、前記第1の電極が形成された面上に、前記第1の電極に対応する第2の電極が形成された第2の基体を対向配置する工程と、
前記第1の温度、前記第2の温度及び前記第3の温度のうちの最高値以上の温度に加熱し、前記第1の絶縁膜及び前記第2の絶縁膜からなる絶縁膜によって前記第1の基体と第2の基体とを接続すると共に、前記第1の電極と前記第2の電極を電気的に接続する工程と
を含むことを特徴とする基体の加工方法。 - 前記第1の絶縁材料は、第4の温度以上で前記第1の基体との固着強度を発現する材料であり、
前記第2の絶縁材料は、第5の温度以上で前記第1の絶縁材料及び前記第2の基体の双方との固着強度を発現する材料であり、
前記導電材料は、第6の温度以上で前記第2の電極との固着強度を発現する材料であり、
前記第1の電極と前記第2の電極とを電気的に接続する工程の後に、前記第4の温度、前記第5の温度及び前記第6の温度のうちの最高値以上の温度で加熱することにより、前記第1の絶縁材料、前記第2の絶縁材料及び前記導電材料を固化する工程を更に有する
ことを特徴とする請求項6に記載の基体の加工方法。 - 第1の基体上に、バンプ電極を形成する工程と、
前記バンプ電極が形成された領域の前記第1の基体上に、第1の温度以上の温度にて接着性を発現する導電材料を堆積し、前記バンプ電極が前記導電材料により覆われてなる第1の電極を形成する工程と、
前記第1の基体上に、第2の温度以上の温度にて接着性を発現する絶縁材料からなる絶縁膜を形成する工程と、
前記第1の温度及び前記第2の温度のうちの低値よりも低い温度に保持しながら、前記第1の電極及び前記絶縁膜が形成された前記第1の基体の表面を切削加工し、前記表面に前記第1の電極を露出させるとともに、前記表面を平坦化する工程と、
前記第1の基体の前記表面に、前記第1の電極に対応する第2の電極が形成された第2の基体を対向させ、前記第1の温度及び前記第2の温度のうちの高値以上の温度で加熱することにより、前記第1の基体と前記第2の基体とを接続するとともに、前記第1の電極と前記第2の電極を電気的に接続する工程と
を有することを特徴とする基体の加工方法。
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