JP4431747B2 - 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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- JP4431747B2 JP4431747B2 JP2004308620A JP2004308620A JP4431747B2 JP 4431747 B2 JP4431747 B2 JP 4431747B2 JP 2004308620 A JP2004308620 A JP 2004308620A JP 2004308620 A JP2004308620 A JP 2004308620A JP 4431747 B2 JP4431747 B2 JP 4431747B2
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Description
図2は、本発明の第1の実施の形態に係る半導体装置の要部断面図である。図2を参照するに、本実施の形態に係る半導体装置10は、半導体チップ11と、半導体チップ11の表面に設けられた接続用電極12および保護膜13と、接続用電極12および保護膜13の表面を覆い、誘電体層14と配線層15とが交互に積層された配線積層体16と、配線積層体16の表面に外部端子として形成された電極パッド18およびはんだバンプ19と、配線積層体16の表面を覆う封止樹脂層20等から構成され、配線積層体16中にはデカップリングキャパシタ21が設けられている。
図9は、本発明の第2の実施の形態に係る半導体装置の要部断面図である。図中、先に説明した部分に対応する部分には同一の参照符号を付し、説明を省略する。
図13は、本発明の第3の実施の形態に係る回路基板を備えた電子装置の概略構成を示す断面図である。
図14は、本発明の第4の実施の形態に係る回路基板を備えた電子装置の概略構成を示す断面図である。
(付記1) 接続用電極が表面に設けられた半導体チップと、
前記表面に誘電体層および配線層を積層して配設された積層体と、
前記積層体に配設され、配線層に電気的に接続された受動素子と、
前記積層体の表面に配設され、前記配線層を介して半導体チップの接続用電極と電気的に接続され、外部と電気的に接続される外部電極と、を備え、
前記受動素子は、エアロゾル化した微粒子材料を吹き付けて形成してなるキャパシタ誘電体膜、抵抗体膜、および導電体膜からなる群のうち、少なくとも1種を有することを特徴とする半導体装置。
(付記2) 前記受動素子は、前記キャパシタ誘電体膜と、該キャパシタ誘電体膜を挟み前記配線層に接続された下部電極と上部電極からなるキャパシタ素子であることを特徴とする付記1記載の半導体装置。
(付記3) 前記下部電極および/または上部電極は配線層の一部を形成してなることを特徴とする付記2記載の半導体装置。
(付記4) 前記下部電極および/または上部電極は、配線層の層内配線膜と略同一面に形成されてなることを特徴とする付記2または3記載の半導体装置。
(付記5) 前記キャパシタ素子は、デカップリングキャパシタであることを特徴とする付記2〜4のうち、いずれか一項記載の半導体装置。
(付記6) 前記キャパシタ素子は、前記半導体チップの表面に1つの誘電体層を介して配設されてなることを特徴とする付記2〜5のうち、いずれか一項記載の半導体装置。
(付記7) 前記キャパシタ素子は、複数の誘電体層に配設されてなることを特徴とする付記2〜6のうち、いずれか一項記載の半導体装置。
(付記8) 前記キャパシタ誘電体膜が、TiO2、MgO、Al2O3、SiO2、AlN、BaTiO3、Ba(Mg1/3Ta2/3)O3、Ba(Co1/3Ta2/3)O3、Ba(Co1/3Nb2/3)O3、Ba(Ni1/3Ta2/3)O3、(BaSr)TiO3、Ba(TiZr)O3、Ba(Zn1/3Nb2/3)O3、Ba(Zn1/3Ta2/3)O3、BaTi4O9、Ba2Ti9O20、CaTiO3、CaZrO3、MgTiO3、Nd2Ti2O7、Pb(Mg1/3Nb2/3)O3、PbTiO3、PbZrO3、PbZrTiO3、Pb(Ni1/3Nb2/3)O3、Pb(Zn1/3Nb2/3)O3、SrTiO3、およびZrSnTiO4からなる群のうちいずれか1種を含むことを特徴とする付記1〜6のうち、いずれか一項記載の半導体装置。
(付記9) 前記受動素子は、前記抵抗体膜を有する抵抗素子であり、
前記抵抗体膜が、RuO2、ReO2、IrO2、SrVO3、CaVO3、LaTiO3、SrMoO3、CaMoO3、SrCrO3、CaCrO3、LaVO3、GdVO3、SrMnO3、CaMnO3、Ni−Cr−O、BiCrO3、LaCrO3、LnCrO3、SrRuO3、CaRuO3、SrFeO3、BaRuO3、LaMnO3、LnMnO3、LaFeO3、LnFeO3、LaCoO3、LaRhO3、LaNiO3、PbRuO3、Bi2Ru2O7、LaTaO3、BiRuO3、およびLaB6からなる群のうちいずれか1種を含むことを特徴とする付記1記載の半導体装置。
(付記10) 前記受動素子は、前記導電体膜を有するインダクタ素子またはアンテナ素子であり、
前記導電体膜が、Cu、Ag、Au、Pt、Pd、およびAlからなる群のうちいずれか1種を含むことを特徴とする付記1記載の半導体装置。
(付記11) 前記誘電体層は、エポキシ樹脂、フェノール樹脂、不飽和ポリエステル樹脂、ケイ素樹脂、ベンゾシクロブテン、ビニル樹脂、ビニルエステル樹脂、ポリイミド樹脂、ビスマレイミド−トリアジン樹脂、およびマレイミド−スチリル樹脂からなる群のうちいずれか1種からなることを特徴とする付記1〜10のうち、いずれか一項記載の半導体装置。
(付記12) 前記積層体の側面は誘電体層に覆われてなることを特徴とする付記1〜11のうち、いずれか一項記載の半導体装置。
(付記13) 前記積層体の表面の外部電極を除く領域および側面は保護膜により覆われてなることを特徴とする付記1〜12のうち、いずれか一項記載の半導体装置。
(付記14) 半導体回路を有する基板の表面に配設された保護膜および接続用電極上に誘電体層と配線層とを交互に積層し積層体を形成する工程と、
前記積層体の表面に配線層を介して半導体チップと電気的に接続され、外部の回路基板に接続される外部電極を形成する工程と、を備え、
前記積層体の形成は、
下部電極を形成する処理と、
前記下部電極を覆うようにエアロゾル化した微粒子材料を吹き付けてキャパシタ誘電体膜、抵抗体膜、および導電体膜からなる群のうちいずれか1つの膜状形成体を形成する処理と、
前記膜状形成体を選択的に除去する処理と、
前記膜状形成体の表面に上部電極を形成する処理とを含むことを特徴とする半導体装置の製造方法。
(付記15) 前記膜状形成体を選択的に除去する処理は、前記膜状形成体の表面に形成したレジスト膜をマスクとしてウエットエッチング法により行うことを特徴とする付記14記載の半導体装置の製造方法。
(付記16) 前記膜状形成体を選択的に除去する処理は、下部電極を形成する処理と膜状形成体を形成する処理との間に、下部電極を覆うレジスト膜を処理と、該レジスト膜を選択的に除去する処理とを備え、
前記膜状形成体を選択的に除去する処理は、前記レジスト膜とその上の膜状形成体を同時に除去することを特徴とする付記14記載の半導体装置の製造方法。
(付記17) 前記下部電極または/および上部電極を形成する処理は、前記配線層の形成と同時に行うことを特徴とする付記14記載の半導体装置の製造方法。
(付記18) 前記キャパシタ誘電体膜は、TiO2、MgO、Al2O3、SiO2、AlN、BaTiO3、Ba(Mg1/3Ta2/3)O3、Ba(Co1/3Ta2/3)O3、Ba(Co1/3Nb2/3)O3、Ba(Ni1/3Ta2/3)O3、(BaSr)TiO3、Ba(TiZr)O3、Ba(Zn1/3Nb2/3)O3、Ba(Zn1/3Ta2/3)O3、BaTi4O9、Ba2Ti9O20、CaTiO3、CaZrO3、MgTiO3、Nd2Ti2O7、Pb(Mg1/3Nb2/3)O3、PbTiO3、PbZrO3、PbZrTiO3、Pb(Ni1/3Nb2/3)O3、Pb(Zn1/3Nb2/3)O3、SrTiO3、およびZrSnTiO4からなる群のうちいずれか1種の微粒子材料を用いることを特徴とする付記14〜17のうち、いずれか一項記載の半導体装置の製造方法。
(付記19) 前記抵抗体膜が、RuO2、ReO2、IrO2、SrVO3、CaVO3、LaTiO3、SrMoO3、CaMoO3、SrCrO3、CaCrO3、LaVO3、GdVO3、SrMnO3、CaMnO3、Ni−Cr−O、BiCrO3、LaCrO3、LnCrO3、SrRuO3、CaRuO3、SrFeO3、BaRuO3、LaMnO3、LnMnO3、LaFeO3、LnFeO3、LaCoO3、LaRhO3、LaNiO3、PbRuO3、Bi2Ru2O7、LaTaO3、BiRuO3、およびLaB6からなる群のうちいずれか1種の微粒子材料を用いることを特徴とする付記14〜17のうち、いずれか一項記載の半導体装置の製造方法。
(付記20) 前記導電体膜が、Cu、Ag、Au、Pt、Pd、およびAlからなる群のうちいずれか1種を含む微粒子材料を用いることを特徴とする付記14〜17のうち、いずれか一項記載の半導体装置の製造方法。
(付記21) 前記微粒子材料は、その表面にアルミニウム化合物が形成されてなることを特徴とする付記18〜20のうち、いずれか一項記載の半導体装置の製造方法。
(付記22) 誘電体層および配線層を積層してなり、受動素子を有する回路基板と、
回路基板に表面に配設された半導体チップとを備える電子装置であって、
前記受動素子は、エアロゾル化した微粒子材料を吹き付けて形成してなるキャパシタ誘電体膜、抵抗体膜、および導電体膜からなる群のうち、少なくとも1種を有することを特徴とする電子装置。
(付記23) 前記誘電体層は、ポリイミド樹脂、ビスマレイミド−トリアジン樹脂、およびマレイミド−スチリル樹脂からなる群のうちいずれか1種からなることを特徴とする付記22記載の電子装置。
11、96 半導体チップ
12 接続用電極
13 保護膜
14a〜14e 誘電体層
15a〜15e 配線層
16 配線積層体
18 電極パッド
19 はんだバンプ
20、41 封止樹脂層
21、81 デカップリングキャパシタ
22、82、93a〜93c キャパシタ誘電体膜
23、73、83 下部電極
24、74、84 上部電極
25、28、76 レジスト膜
26 AD誘電体膜
50 AD膜形成装置
71 抵抗素子
72 抵抗体膜
75 AD抵抗体膜
90 電子装置
Claims (8)
- 半導体回路を有する基板の表面に配設された保護膜および接続用電極上に誘電体層と配線層とを交互に積層し積層体を形成する工程と、
前記積層体の表面に配線層を介して半導体チップと電気的に接続され、外部の回路基板に接続される外部電極を形成する工程と、を備え、
前記積層体の形成は、
下部電極を形成する処理と、
前記下部電極を覆うように加熱処理により表面に結合剤が形成された微粒子材料を吹き付けて形成したキャパシタ誘電体膜、抵抗体膜、および導電体膜からなる群のうちいずれか1つの膜状形成体を形成する処理と、
前記膜状形成体を選択的に除去する処理と、
前記膜状形成体の表面に上部電極を形成する処理とを含むことを特徴とする半導体装置の製造方法。 - 前記膜状形成体を選択的に除去する処理は、前記膜状形成体の表面に形成したレジスト膜をマスクとしてウエットエッチング法により行うことを特徴とする請求項1記載の半導体装置の製造方法。
- 前記膜状形成体を選択的に除去する処理は、下部電極を形成する処理と膜状形成体を形成する処理との間に、下部電極を覆うレジスト膜を処理と、該レジスト膜を選択的に除去する処理とを備え、
前記膜状形成体を選択的に除去する処理は、前記レジスト膜とその上の膜状形成体を同時に除去することを特徴とする請求項1記載の半導体装置の製造方法。 - 前記下部電極を形成する処理と、前記上部電極を形成する処理の何れか一方又は双方は、前記配線層の形成と同時に行うことを特徴とする請求項1〜3のうち、いずれか一項記載の半導体装置の製造方法。
- 前記キャパシタ誘電体膜は、TiO2、MgO、Al2O3、SiO2、AlN、BaTiO3、Ba(Mg1/3Ta2/3)O3、Ba(Co1/3Ta2/3)O3、Ba(Co1/3Nb2/3)O3、Ba(Ni1/3Ta2/3)O3、(BaSr)TiO3、Ba(TiZr)O3、Ba(Zn1/3Nb2/3)O3、Ba(Zn1/3Ta2/3)O3、BaTi4O9、Ba2Ti9O20、CaTiO3、CaZrO3、MgTiO3、Nd2Ti2O7、Pb(Mg1/3Nb2/3)O3、PbTiO3、PbZrO3、PbZrTiO3、Pb(Ni1/3Nb2/3)O3、Pb(Zn1/3Nb2/3)O3、SrTiO3、およびZrSnTiO4からなる群のうちいずれか1種の微粒子材料を用いることを特徴とする請求項1〜4のうち、いずれか一項記載の半導体装置の製造方法。
- 前記抵抗体膜が、RuO2、ReO2、IrO2、SrVO3、CaVO3、LaTiO3、SrMoO3、CaMoO3、SrCrO3、CaCrO3、LaVO3、GdVO3、SrMnO3、CaMnO3、Ni−Cr−O、BiCrO3、LaCrO3、LnCrO3、SrRuO3、CaRuO3、SrFeO3、BaRuO3、LaMnO3、LnMnO3、LaFeO3、LnFeO3、LaCoO3、LaRhO3、LaNiO3、PbRuO3、Bi2Ru2O7、LaTaO3、BiRuO3、およびLaB6からなる群のうちいずれか1種の微粒子材料を用いることを特徴とする請求項1〜4のうち、いずれか一項記載の半導体装置の製造方法。
- 前記導電体膜が、Cu、Ag、Au、Pt、Pd、およびAlからなる群のうちいずれか1種を含む微粒子材料を用いることを特徴とする請求項1〜4のうち、いずれか一項記載の半導体装置の製造方法。
- 前記微粒子材料は、その表面にアルミニウム化合物が形成されてなることを特徴とする請求項5〜7のうち、いずれか一項記載の半導体装置の製造方法。
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