JP2018535549A - 画像検知チップ実装構造および実装方法 - Google Patents
画像検知チップ実装構造および実装方法 Download PDFInfo
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- JP2018535549A JP2018535549A JP2018521251A JP2018521251A JP2018535549A JP 2018535549 A JP2018535549 A JP 2018535549A JP 2018521251 A JP2018521251 A JP 2018521251A JP 2018521251 A JP2018521251 A JP 2018521251A JP 2018535549 A JP2018535549 A JP 2018535549A
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- image sensing
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Abstract
Description
本開示は半導体の技術分野に関し、特に画像検知チップ用のパッケージおよび実装方法に関する。
現在のウェーハレベル実装技術によれば、ウェーハ全体が検査されて実装され、切断されて、個々の完成したチップが得られる。ウェーハレベル実装技術はワイヤボンディング実装技術を徐々に置換えており、主流の実装技術になっている。
これに鑑み、画像検知チップ用パッケージの欠陥を減少させるために、画像検知チップ用パッケージが、本開示の第1の局面に従って提供される。
好ましくは、金属はAlであってもよく、その表面は黒くなっている。
好ましくは、パッケージはさらに、電気接続層を覆い、スルーホールを充填するはんだマスクを含んでいてもよい。
本開示の目的、特徴および利点がより明白になるように、本開示の実施形態を図面とともに以下に詳細に説明する。
互いに対向する第1の表面1001および第2の表面1002を含む画像検知チップ100。第1の表面1001には、画像検知領域102と、画像検知領域102のまわりのコンタクトパッド104とが設けられる;
第2の表面1002からコンタクトパッド104まで延在するスルーホール105;
スルーホール105の側壁上および第2の表面1002上に配置されたパッシベーション層106;
スルーホール105の底上およびパッシベーション層106上に配置された電気接続層108。電気接続層108はコンタクトパッド104と電気的に接続されている;および
電気接続層108と電気的に接続されたはんだバンプ122。
Claims (22)
- 画像検知チップ用パッケージであって、
互いに対向する第1の表面および第2の表面を有する画像検知チップを含み、第1の表面には、画像検知領域と、前記画像検知領域のまわりのコンタクトパッドとが設けられ、前記パッケージはさらに、
前記第2の表面から前記コンタクトパッドまで延在するスルーホールと、
前記スルーホールの側壁上および前記第2の表面上に設けられたパッシベーション層と、
前記スルーホールの底上および前記パッシベーション層上に設けられた電気接続層とを含み、前記電気接続層は前記コンタクトパッドと電気的に接続され、前記パッケージはさらに、
前記電気接続層と電気的に接続されたはんだバンプを含む、パッケージ。 - 前記第2の表面上に位置し、前記画像検知領域を覆う遮光層をさらに含む、請求項1に記載のパッケージ。
- 前記遮光層は金属で作られている、請求項2に記載のパッケージ。
- 前記金属はAlであり、その表面は黒くなっている、請求項3に記載のパッケージ。
- 前記電気接続層と前記パッシベーション層との間に位置するバッファ層をさらに含む、請求項1に記載のパッケージ。
- 前記バッファ層は、有機高分子フォトレジストまたは感光性レジストで作られている、請求項5に記載のパッケージ。
- 前記バッファ層の厚さは、5μm〜25μmである、請求項6に記載のパッケージ。
- 前記電気接続層を覆い、前記スルーホールを充填するはんだマスクをさらに含む、請求項1に記載のパッケージ。
- 前記画像検知チップと整列されて取付けられた保護カバープレートをさらに含む、請求項1に記載のパッケージ。
- 前記保護カバープレートは光学ガラスで作られており、前記光学ガラスの少なくとも1つの表面上に反射防止層が配置される、請求項9に記載のパッケージ。
- 前記パッシベーション層は、酸化シリコン、窒化シリコン、または酸窒化シリコンで作られている、請求項1に記載のパッケージ。
- 画像検知チップを実装するための方法であって、
アレイ状に配置された複数の画像検知チップを含むウェーハを設けるステップを含み、前記複数の画像検知チップの各々は、互いに対向する第1の表面および第2の表面を有し、画像検知領域と前記画像検知領域のまわりのコンタクトパッドとを含み、前記画像検知領域および前記コンタクトパッドは前記第1の表面上に位置し、前記方法はさらに、
前記第2の表面上にスルーホールを形成するステップを含み、前記スルーホールは前記コンタクトパッドまで延在し、前記方法はさらに、
前記スルーホールの側壁上および前記スルーホールの両側の前記第2の表面上にパッシベーション層を形成するステップと、
前記スルーホールの内壁およびバッファ層を覆う電気接続層を形成するステップとを含み、前記電気接続層は前記コンタクトパッドと電気的に接続され、前記方法はさらに、
前記電気接続層上にはんだバンプを形成するステップを含み、前記はんだバンプは前記電気接続層と電気的に接続されている、方法。 - 前記スルーホールを形成するステップの前に、前記方法はさらに、前記画像検知領域に対応する前記第2の表面上の位置に遮光層を形成するステップを含む、請求項12に記載の方法。
- 前記遮光層を形成するステップは、前記画像検知領域に対応する前記位置に前記遮光層を形成するために、前記第2の表面上に金属層をスパッタリングによって形成し、前記金属層をエッチングするステップを含む、請求項13に記載の方法。
- 前記金属層はAlで作られており、
Alで作られた前記金属層をスパッタリングによって形成後、前記方法はさらに、
前記金属層の表面を黒くし、次に前記金属層をエッチングするステップを含む、請求項14に記載の方法。 - 前記電気接続層を形成するステップの後で、前記はんだバンプを形成するステップの前に、前記方法はさらに、
はんだマスクを形成するステップと、
前記第2の表面上の前記はんだマスクに開口部を形成するステップとを含み、前記はんだバンプは前記開口部に形成される、請求項12に記載の方法。 - 保護カバープレートを設け、前記保護カバープレートを前記画像検知チップと整列させて取付けるステップをさらに含む、請求項12に記載の方法。
- 前記保護カバープレートは光学ガラスで作られており、前記光学ガラスの少なくとも1つの表面上に反射防止層が配置される、請求項17に記載の方法。
- 前記スルーホールの前記側壁上および前記スルーホールの両側の前記第2の表面上に前記パッシベーション層を形成するステップは、
パッシベーション層を堆積させるステップと、
前記スルーホールの底で前記パッシベーション層をエッチングによって除去するステップとを含む、請求項12に記載の方法。 - 前記パッシベーション層は、酸化シリコン、窒化シリコン、または酸窒化シリコンで作られている、請求項19に記載の方法。
- 前記パッシベーション層を形成するステップの後で、前記方法はさらに、
前記第2の表面上の前記パッシベーション層上に前記バッファ層を形成するステップを含む、請求項12に記載の方法。 - 前記バッファ層は感光性レジストで作られており、
前記第2の表面上の前記パッシベーション層上に前記バッファ層を形成するステップは、
前記第2の表面上に前記感光性レジストをスピンコーティングするステップと、
露光および現像プロセスを用いて前記バッファ層を形成するステップとを含む、請求項21に記載の方法。
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CN201520848187.0 | 2015-10-28 | ||
CN201510716297.6A CN105226074A (zh) | 2015-10-28 | 2015-10-28 | 影像传感芯片封装结构及封装方法 |
PCT/CN2016/099325 WO2017071427A1 (zh) | 2015-10-28 | 2016-09-19 | 影像传感芯片封装结构及封装方法 |
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