JP2008537355A - 金属薄片を利用した受動素子及び半導体パッケージの製造方法 - Google Patents
金属薄片を利用した受動素子及び半導体パッケージの製造方法 Download PDFInfo
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- JP2008537355A JP2008537355A JP2008507533A JP2008507533A JP2008537355A JP 2008537355 A JP2008537355 A JP 2008537355A JP 2008507533 A JP2008507533 A JP 2008507533A JP 2008507533 A JP2008507533 A JP 2008507533A JP 2008537355 A JP2008537355 A JP 2008537355A
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Abstract
前記のような構成からなる本発明によれば、金属薄片を半導体工程を利用して選択的にエッチング及び研磨し、高品質のインダクタ及びビアを同時に形成して、高電気伝導性を有する高品質の受動素子を提供し、製造時間及び費用を減少させることができる。
【選択図】図2
Description
次に、前記のように準備された基板71のダイパッド73に半導体チップ74を実装した後、前記半導体チップ74のボンディングパッド及び基板71の電極パッドをボンディングワイヤー75で電気的に接続する。この時、前記ボンディング手段は、ボンディングワイヤー75による電気的接続技術の代わりに、タブ(TAB)技術を適用することもできる。
その後、基板71の上面がメタルキャップ79で密封されるが、密封前にヒートスプレッダ77及びメタルキャップ79の間にサーマルコンパウンド78をドッティング(dotting)することによって、接着性または熱の拡散が向上する。
その後、マスキング物質を除去した後、必要な部分に表面実装のためのソルダーバンプ200を形成することによって完成する。図5で必要な場合には、下部基板180がない構造に製造することもできる。
Claims (18)
- 基板に集積して形成されるインダクタやビアなどの受動素子の製造方法において、
ダミー基板に接着層を形成する接着層形成過程;
前記接着層に金属薄片を接合させる接合過程;
前記金属薄片にマスキング物質を付着して、ビアが形成される領域をパターニングした後、前記金属薄片を所望の深さにエッチングするエッチング過程;
前記マスキング物質を除去して、前記エッチングされた部分にポリマーを充填して平坦なポリマー表面を形成し、前記ポリマー表面に前記マスキング物質を付着して、IPD(集積受動デバイス)やICチップに付着する領域をパターニングした後、金属パッドを形成し、この金属パッドを使用して前記IPDまたはICチップなどの下部基板に付着させる基板付着過程;
前記接着層及びダミー基板を除去して、前記金属薄片のダミー基板が除去された後で露出された面にマスキング物質を付着して、インダクタやビアなどの受動素子が形成される領域をパターニングした後、前記金属薄片を所望の深さにエッチングするエッチング過程;及び
前記マスキング物質を除去した後、表面実装のためのソルダーバンプを形成するバンプ形成過程;を含むことを特徴とする、金属薄片を利用した受動素子の製造方法。 - 前記エッチング過程において、前記受動素子のうちのインダクタは、ポリマー膜上に形成されることを特徴とする、請求項1に記載の金属薄片を利用した受動素子の製造方法。
- 前記ポリマー膜は、BCB(ベンゾシクロブテン)、PI(ポリイミド)、BT(ビスマレイミドトリアジン)から選択されたいずれか1つであることを特徴とする、請求項1に記載の金属薄片を利用した受動素子の製造方法。
- 前記マスキング物質は、SiO2、SiNx、またはSiO2/SiNx複合物のいずれか1つであることを特徴とする、請求項1に記載の金属薄片を利用した受動素子の製造方法。
- 前記ソルダーバンプは、メッキまたはシルクスクリーン方法によるBGA/LGA(ボールグリッドアレイ/ランドグリッドアレイ)タイプに形成することを特徴とする、請求項1に記載の金属薄片を利用した受動素子の製造方法。
- 前記ダミー基板は、ガラス板、ケイ素半導体基板などの平坦度が優れている基板であることを特徴とする、請求項1に記載の金属薄片を利用した受動素子の製造方法。
- 厚い金属薄片を使用する場合には、前記接着層形成過程及び接合過程を省略して進める、請求項1に記載の金属薄片を利用した受動素子の製造方法。
- 前記厚い金属薄片を使用する場合には、前記下部基板がない構造の受動素子を製造することを特徴とする、請求項1に記載の金属薄片を利用した受動素子の製造方法。
- 金属基板に集積して形成される受動素子の製造方法において、
ダミー基板に接着層を形成する接着層形成過程;
前記接着層に金属薄片を接合させる接合過程;
前記金属薄片の底面にマスキング物質を付着して、受動素子が形成される領域をパターニングした後、前記金属薄片に所望の深さで所望の場所に絶縁体を形成する絶縁体形成過程;
前記マスキング物質を除去して、前記金属薄片の底面にフォトリソグラフィで金属パッドを形成する金属パッド形成過程;
この金属パッドを利用してIPDまたはICチップなどの下部基板に付着させる基板付着過程;
前記接着層及びダミー基板を除去するダミー基板除去過程;
前記金属薄片の裏面を前記絶縁体が露出されるまで金属を除去する金属除去過程;及び
PCB基板に表面実装のためのソルダーバンプを形成するバンプ形成過程;を含むことを特徴とする、金属薄片を利用した受動素子の製造方法。 - 前記マスキング物質は、SiO2、SiNx、またはSiO2/SiNx複合物のいずれか1つであることを特徴とする、請求項9に記載の金属薄片を利用した受動素子の製造方法。
- 前記金属除去過程において、前記金属基板の裏面は、機械的研磨、化学的エッチング、または機械的及び化学的複合エッチングによって金属を除去することを特徴とする、請求項9に記載の金属薄片を利用した受動素子の製造方法。
- 前記ソルダーバンプは、メッキまたはシルクスクリーン方法によるBGA/LGA(ボールグリッドアレイ/ランドグリッドアレイ)タイプに形成することを特徴とする、請求項9に記載の金属薄片を利用した受動素子の製造方法。
- 前記ダミー基板は、ガラス板、ケイ素半導体基板などの平坦度が優れている基板であることを特徴とする、請求項9に記載の金属薄片を利用した受動素子の製造方法。
- 厚い金属薄片を使用する場合には、前記接着層形成過程及び接合過程を省略して進める、請求項9に記載の金属薄片を利用した受動素子の製造方法。
- 前記厚い金属薄片を使用する場合には、前記下部基板がない構造の受動素子を製造することを特徴とする、請求項9に記載の金属薄便を利用した受動素子の製造方法。
- 請求項1または9の金属薄片に集積して形成される受動素子の製造方法を利用して、前記金属薄片に受動素子を集積し、その上をメタルカバーで保護する半導体パッケージの製造方法において、
前記受動素子が形成された金属薄片の誘電体上や金属面にシステムを構成するのに必要な受動素子を集積して、フリップチップボンディングを利用してベアチップ状態の半導体素子及び集積された受動素子を連結する連結過程;
前記下部基板に表面実装のためのソルダーバンプを形成するバンプ形成過程;及び
前記金属薄片に集積された受動素子及び半導体素子を保護するメタルカバーを前記金属薄片に接着して形成するカバー接着過程;を含むことを特徴とする、金属薄片を利用した半導体パッケージの製造方法。 - 前記金属薄片の金属面上に付着される半導体素子は、
熱伝導性接着物質で固定して、ワイヤーボンディングによって前記誘電体上や金属面に集積された受動素子と連結されることを特徴とする、請求項16に記載の金属薄片を利用した半導体パッケージの製造方法。 - 前記メタルカバー及び前記金属薄片は、
伝導性エポキシまたは金属ボンディング方式の接着層によって連結されることを特徴とする、請求項16に記載の金属薄片を利用した半導体パッケージの製造方法。
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PCT/KR2005/002940 WO2006112576A1 (en) | 2005-04-21 | 2005-09-06 | Method for manufacturing passive device and semiconductor package using thin metal piece |
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