JP5880283B2 - 半導体装置の製造方法 - Google Patents
半導体装置の製造方法 Download PDFInfo
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- JP5880283B2 JP5880283B2 JP2012122047A JP2012122047A JP5880283B2 JP 5880283 B2 JP5880283 B2 JP 5880283B2 JP 2012122047 A JP2012122047 A JP 2012122047A JP 2012122047 A JP2012122047 A JP 2012122047A JP 5880283 B2 JP5880283 B2 JP 5880283B2
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- H01L2224/73201—Location after the connecting process on the same surface
- H01L2224/73203—Bump and layer connectors
- H01L2224/73204—Bump and layer connectors the bump connector being embedded into the layer connector
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- H01L2224/92122—Sequential connecting processes the first connecting process involving a bump connector
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- H01L23/532—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body characterised by the materials
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- H01L2924/11—Device type
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- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/151—Die mounting substrate
- H01L2924/153—Connection portion
- H01L2924/1531—Connection portion the connection portion being formed only on the surface of the substrate opposite to the die mounting surface
- H01L2924/15311—Connection portion the connection portion being formed only on the surface of the substrate opposite to the die mounting surface being a ball array, e.g. BGA
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Description
図9〜図10は、本実施形態に係る半導体装置の製造途中の拡大断面図である。なお、図9〜図10において、図1〜図8で説明したのと同じ要素にはこれらにおけるのと同じ符号を付し、以下ではその説明を省略する。
(変形例)
また、図18に示したように、塗膜30を熱硬化させる際には、第2のステップS2と第3のステップS3とで塗膜30の昇温レートを異なる値にし、第2のステップS2における昇温レートを第3のステップS3のそれよりも高くしてもよい。
上記した第1実施形態では、図18の第1のステップS1において予め塗膜30中の溶媒を除去することにより、第2のステップS2における塗膜30の過度な流動を抑制し、第1の領域Iで塗膜30の膜厚が不足するのを防止した。
本例では、塗膜30の硬化処理において、紫外線の照射により塗膜30の粘度を高いものとするステップを含む。
本例では、塗膜30の硬化処理において、マイクロ波の照射により塗膜30の粘度を高いものとするステップを含む。
本例では、塗膜30の硬化処理において、電子線の照射により塗膜30の粘度を高いものとする。
前記主面上及び前記第1の電極上に、第1の温度において第1の粘度を有し、前記第1の温度より高い第2の温度において前記第1の粘度よりも低い第2の粘度を有し、前記第2の温度より高い第3の温度において前記第2の粘度より高い第3の粘度を有する絶縁材料を塗布する工程と、
前記絶縁材料を硬化させて第1の絶縁膜を形成する工程とを有し、
前記第1の絶縁膜を形成する工程は、前記塗布する工程の後、前記第1の粘度を有する前記絶縁材料を第1の条件で加熱して前記第2の粘度とする工程と、
前記第2の粘度とする工程の後、前記絶縁材料を第2の条件で加熱して前記第3の粘度とする工程とを有し、
前記第1の条件として、前記第2の条件におけるのと前記第1の半導体基板の昇温レートが異なる条件を採用することを特徴とする半導体装置の製造方法。
前記第1の温度である前記第1の半導体基板を加熱することにより、前記半導体基板の温度を前記第1の温度より高く前記第2の温度より低い第4の温度とする工程と、
第1の期間、前記第1の半導体基板を前記第4の温度に保持する工程と、
を有することを特徴とする付記1に記載の半導体装置の製造方法。
前記第4の温度に保持する工程は、前記絶縁材料の前記溶媒を除去することを特徴とする付記2に記載の半導体装置の製造方法。
減圧雰囲気中で前記絶縁材料を硬化する工程を有することを特徴とする付記1に記載の半導体装置の製造方法。
前記第1の絶縁膜の一部を除去して、前記第1の電極の前記突出部の上面を露出させる工程と、
前記露出させる工程の後、前記第1の半導体基板と第2の電極を有する第2の半導体基板とを対向させ、前記第1の電極の前記突出部の上面と前記第2の電極とを接合させる工程とを更に有することを特徴とする付記1乃至付記7のいずれかに記載の半導体装置の製造方法。
前記第1の半導体基板と前記第2の半導体基板との間に第2の絶縁膜を形成することを特徴とする付記8に記載の半導体装置の製造方法。
前記第1の半導体基板の主面から突出した突出部を有する第1の電極と、
前記突出部の側面上及び前記主面上に形成され、前記主面上の一部において、前記突出部から離れるにつれて膜厚が薄くなる第1の絶縁膜と、
を有することを特徴とする半導体装置。
前記一部は、前記複数の第1の電極のうちの一つの第1の電極を内側に含むことを特徴とする付記10に記載の半導体装置。
前記第2の半導体基板上に形成された第2の電極とを有し、
前記第1の電極と前記第2の電極とが接合されていることを特徴とする付記10乃至付記16のいずれかに記載の半導体装置。
前記第1の半導体基板と前記第2の半導体基板との間に第2の絶縁膜が形成されたことを特徴とする付記17に記載の半導体装置の製造方法。
Claims (7)
- 第1の半導体基板の主面から突出した突出部を有する第1の電極を形成する工程と、
前記主面上及び前記第1の電極上に、第1の温度において第1の粘度を有し、前記第1の温度より高い第2の温度において前記第1の粘度よりも低い第2の粘度を有し、前記第2の温度より高い第3の温度において前記第2の粘度より高い第3の粘度を有する絶縁材料を塗布する工程と、
前記絶縁材料を第1の状態に硬化させて第1の絶縁膜を形成する工程とを有し、
前記第1の絶縁膜を形成する工程は、前記塗布する工程の後、前記第1の粘度を有する前記絶縁材料を昇温する第1の条件で加熱して前記第1の温度よりも高く前記第2の温度よりも低い第4の温度とする工程と、
前記第4の温度とする工程の後、前記絶縁材料を昇温する第2の条件で加熱して前記第2の粘度となる前記第2の温度を通過させて前記第3の粘度とする工程とを有し、
前記第2の条件の昇温レートは、前記第1の条件の昇温レートよりも高いことを特徴とする半導体装置の製造方法。 - 前記第4の温度とする工程は、
第1の期間、前記第1の半導体基板を前記第4の温度に保持する工程を有することを特徴とする請求項1に記載の半導体装置の製造方法。 - 前記絶縁材料は、前記第4の温度より高い沸点を有する溶媒を含み、
前記第4の温度に保持する工程は、前記絶縁材料の前記溶媒を除去することを特徴とする請求項2に記載の半導体装置の製造方法。 - 前記絶縁材料を昇温する前記第2の条件で加熱する前に、
減圧雰囲気中で前記絶縁材料を粘度が前記加熱する前よりもさらに高くなるように前記第1の状態とは異なる第2の状態に変化させる工程を有することを特徴とする請求項1に記載の半導体装置の製造方法。 - 前記絶縁材料を前記第2の状態に変化させる工程は、前記絶縁材料に、紫外線、マイクロ波、及び電子線のいずれかを照射することにより行われることを特徴とする請求項4に記載の半導体装置の製造方法。
- 前記第1の絶縁膜を形成する工程の後、
前記第1の絶縁膜の一部を除去して、前記第1の電極の前記突出部の上面を露出させる工程と、
前記露出させる工程の後、前記第1の半導体基板と第2の電極を有する第2の半導体基板とを対向させ、前記第1の電極の前記突出部の上面と前記第2の電極とを接合させる工程とを更に有することを特徴とする請求項1乃至請求項5のいずれか1項に記載の半導体装置の製造方法。 - 前記接合させる工程の後、
前記第1の半導体基板と前記第2の半導体基板との間に第2の絶縁膜を形成することを特徴とする請求項6に記載の半導体装置の製造方法。
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US6642136B1 (en) * | 2001-09-17 | 2003-11-04 | Megic Corporation | Method of making a low fabrication cost, high performance, high reliability chip scale package |
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US6319851B1 (en) | 1999-02-03 | 2001-11-20 | Casio Computer Co., Ltd. | Method for packaging semiconductor device having bump electrodes |
US6498381B2 (en) * | 2001-02-22 | 2002-12-24 | Tru-Si Technologies, Inc. | Semiconductor structures having multiple conductive layers in an opening, and methods for fabricating same |
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