JP7084981B2 - フラックスフリーはんだボール実装機構 - Google Patents
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Description
Claims (14)
- ウェハ上に配置されたパッドのアレイの上への複数のはんだボールのフラックスフリーアセンブリを可能にして、ウェハ製品を構成し、エレクトロニクス産業での前記ウェハ製品の使用を可能にするプロセスであって、
前記ウェハ上にフラックスフリー結合剤を堆積させることと、
圧縮乾燥空気のカーテンを前記フラックスフリー結合剤が堆積させた前記ウェハの表面の全体にわたって掃引させるように、前記ウェハ上の前記フラックスフリー結合剤上に前記圧縮乾燥空気のカーテンを吹き付けて、前記ウェハ上の前記フラックスフリー結合剤の深さを制御することと、
前記ウェハ上に、孔付きステンシルを配置することと、
パッド付きウェハを、前記孔付きステンシルに整列させることと、
前記整列されたパッド付きウェハと前記孔付きステンシルとが整列されていることを、コンピュータ化光学ビジョンシステムを通して検証することと、
ボール実装ヘッドから前記孔付きステンシル上に多数のはんだボールを落下させることによって、落下させた前記はんだボールを前記ウェハ上に配置された前記孔付きステンシルの孔のアレイを通して、前記ウェハ上の前記フラックスフリー結合剤の上に、はんだボールのアレイを堆積させることと、
前記ボール実装ヘッドの底側に取り付けられたループ状ワイヤのアレイを、前記孔付きステンシル上の前記はんだボールのアレイの中に降下させることと、
前記孔付きステンシル上の前記はんだボールのアレイ内で前記ループ状ワイヤのアレイを振動させて、前記孔付きステンシルの前記孔を通したボール載置をさらに生じさせることと、
前記孔付きステンシル上の前記はんだボールのアレイの上に圧縮乾燥空気を吹き付けて、前記孔付きステンシル上に残存しているいかなる外れた過剰なはんだボールも変位させることと、
前記吹き付けられた圧縮乾燥空気によって変位されたいかなる外れた過剰なはんだボールも吸引及び収集することと、を含むプロセス。 - 前記ウェハをスリーゾーン真空チャック上に支持して、その上に前記ウェハをしっかりと保持するステップを含む、請求項1に記載のプロセス。
- 垂直変位可能な支持ピンのアレイを、前記スリーゾーン真空チャック内部に配置して、空気圧ピン制御プロセスによって制御された様態で、前記ウェハを、前記真空チャックの上に降下させることを可能にするステップを含む、請求項2に記載のプロセス。
- ウェハ処理加工収容チャンバ内でのウェハ上の複数のはんだボールのフラックスフリー加工のためのシステムであって、
ウェハが前記加工収容チャンバ内で加工されているとき、複数のはんだボールを包含する前記ウェハの支持を維持するための移動可能な真空支持チャックと、
前記加工収容チャンバ内部の前記ウェハの上方に、結合剤堆積関係にあるように配置された、移動可能なフラックスフリー結合剤アプリケータと、
流体カーテンを前記フラックスフリー結合剤が堆積させた前記ウェハの表面の全体にわたって掃引させるように、前記加工収容チャンバ内部の前記ウェハに適用されるいかなるフラックスフリー結合剤に対しても結合剤適用最小化処理関係にあるように配置された、移動可能な流体カーテンディスペンサであって、前記流体カーテンが、圧縮空気である、流体カーテンディスペンサと、を備えるシステム。 - 前記移動可能な流体カーテンディスペンサが、処理されている前記ウェハの上に移動可能に配置された空気噴出ノズルのアレイを備える、請求項4に記載のシステム。
- 前記空気噴出ノズル及び前記移動可能なフラックスフリー結合剤アプリケータの両方が、共通のガントリフレーム機構上に支持される、請求項5に記載のシステム。
- 前記ウェハ上に適切に配置されていないいかなる過剰はんだボールも収集するために、処理中の前記ウェハに隣接して配置された、真空を利用する過剰はんだボール収集容器を含む、請求項4に記載のシステム。
- 前記過剰はんだボール収集容器による、過剰はんだボールの除去に続いて、はんだボール載置精度のために処理された前記ウェハを検査及び分析するための、前記加工収容チャンバ内に挿入可能なカメラ機構を含む、請求項7に記載のシステム。
- ウェハ処理加工収容チャンバ内で、ウェハ上の複数のはんだボールを処理するための方法であって、
パッド搭載済みウェハを、ロボットアームによって、前記ウェハ処理加工収容チャンバ内に引き上げることと、
前記ウェハ処理加工収容チャンバ内部に配置された移動可能な真空チャックから延在する複数の垂直移動可能な支持ピンによって、前記ウェハ処理加工収容チャンバ内部の前記パッド搭載済みウェハを支持することと、
前記パッド搭載済みウェハを、前記垂直移動可能な支持ピンの最上端に各々配置された複数の真空カップの上に、それを通した真空によって固着することと、
前記移動可能な支持ピンを、前記移動可能な真空チャックの中に引き込むことと、
前記パッド搭載済みウェハの底側に前記パッド搭載済みウェハを固着させるために、前記移動可能な真空チャック内で、複数の真空チャネルからのさらなる真空を適用することと、
前記移動可能な真空チャック上に支持された前記パッド搭載済みウェハの上側面全体に、フラックスフリー結合剤を堆積させることと、
圧縮乾燥空気のカーテンを前記フラックスフリー結合剤が堆積させた前記ウェハの表面の全体にわたって掃引させるように、前記パッド搭載済みウェハの前記結合剤付き上側面全体に、前記圧縮乾燥空気のカーテンを吹き付けることと、
前記パッド搭載済みウェハの上に、孔付きステンシルを配置することと、
前記パッド搭載済みウェハを、前記孔付きステンシルの下方に移動させることと、
複数のはんだボールを、前記パッド搭載済みウェハの上方に支持されたボール実装ヘッドから、前記パッド搭載済みウェハの上に落下させることと、
前記ウェハ上に前記はんだボールを強化し、前記ウェハ上の過剰なはんだボールを除去するために、圧縮乾燥空気のカーテンを前記ボール実装ヘッドが付いた前記ウェハの表面の全体にわたって掃引させるように、前記ウェハ上の前記はんだボールの上に圧縮乾燥空気のカーテンをさらに吹き付けることと、
前記パッド搭載済みウェハから、前記孔付きステンシル内に整列されていない過剰なはんだボールを吸引及び収集することと、
さらなる処理チャンバ内での加工のために、前記パッド搭載済みウェハ処理収容チャンバから前記パッド搭載済みウェハを取り出すことと、を含む方法。 - 振動掃引機構を、前記ウェハ処理収容チャンバ内部の前記パッド搭載済みウェハの上方の位置に下げるステップと、
前記孔付きステンシル内の孔内部でのはんだボールの載置を確実にするために、前記掃引機構を、その上にはんだボールを有する前記パッド搭載済みウェハの上方で振動させるステップと、を含む、請求項9に記載の方法。 - 前記パッド搭載済みウェハから過剰なはんだボールの収集を可能にするために、前記孔付きステンシルの縁に沿って真空を適用するステップを含む、請求項10に記載の方法。
- ウェハチップ処理適用チャンバ内における、パッド搭載済みウェハチップ上のはんだボールのフラックスフリーアセンブリのためのプロセスであって、
前記ウェハチップの上側面に、はんだボールアレイ取り付けパッドを適用するステップと、
前記ウェハチップを、ロボット制御でウェハチップ処理適用チャンバの中に移動させるステップと、
前記ウェハチップを、移動可能な真空チャックから垂直方向上方に延在する空気圧制御支持ピンの配列の上まで下げるステップと、
前記ウェハチップを、介在する複数の真空チャネルによって、前記移動可能な真空チャックの上に固着させるステップと、
結合剤噴霧ノズル及び圧縮空気送出ノズル機構によって支持されたガントリフレームを、前記ウェハチップ処理適用チャンバの中に導入するステップと、
結合剤流体を、前記結合剤噴霧ノズルから、その下方の前記ウェハチップの上側面全体に噴霧するステップと、
過剰な結合剤流体を除去するために、圧縮乾燥空気のカーテンを結合剤が付いた前記ウェハチップの上側面全体にわたって掃引させるように、前記圧縮乾燥空気のカーテンを、前記圧縮空気送出ノズルから、前記ウェハチップの前記上側面の上に噴霧するステップと、
前記ウェハチップを、前記移動可能な真空チャック上に粗く整列させるステップと、
孔付きステンシルを、前記ウェハチップ処理適用チャンバの中に、前記ウェハチップ上方に導入するステップと、
前記ウェハチップに対する前記孔付きステンシルの整列を、前記ウェハチップ処理適用チャンバ内部のガントリフレーム上に支持された検証カメラによって検証するステップと、
X、Y、及びZ方向に変位可能なボール実装ヘッドを、前記ウェハチップ処理適用チャンバの中に導入するステップと、
複数のはんだボールを、前記ウェハチップ上方の前記孔付きステンシルの上に落下させることと、
ループ状ワイヤの機構を、前記複数のはんだボールの上で振動させ、それによって、前記はんだボールを、前記ウェハチップの表面上の前記孔付きステンシルの前記孔の中に誘導するステップと、を含むプロセス。 - 過剰な結合剤を前記ウェハから除去するために、前記結合剤全体に圧縮乾燥空気のカーテンを吹き付けるステップを含む、請求項12に記載のプロセス。
- はんだボールを、前記ウェハ上の最小化された結合剤上に整列させるステップを含む、請求項12に記載のプロセス。
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