JP4503053B2 - 導電性ボールの搭載装置および搭載方法 - Google Patents
導電性ボールの搭載装置および搭載方法 Download PDFInfo
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- JP4503053B2 JP4503053B2 JP2007192018A JP2007192018A JP4503053B2 JP 4503053 B2 JP4503053 B2 JP 4503053B2 JP 2007192018 A JP2007192018 A JP 2007192018A JP 2007192018 A JP2007192018 A JP 2007192018A JP 4503053 B2 JP4503053 B2 JP 4503053B2
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- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
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- H01L2224/12—Structure, shape, material or disposition of the bump connectors prior to the connecting process
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Description
外枠とその内部の内筒とを有するヘッドを有し、
外枠の下端に、導電性ボールの搭載位置に開口を有するマスクと、マスクの上面から外部へ排気する排気口とを備え、
内筒は、外枠内のマスク上方に配置され、篩によって上部と下部の空間に仕切られ、上部の空間は内筒上端に導電性ボール供給口が開口した導電性ボール仮貯留室を構成し、下部の空間は下端が開放され、篩の下方へ外部から給気する給気口を有し、
振動装置により、内筒が外枠に実質的に拘束されずに振動可能であることを特徴とする導電性ボールの搭載装置が提供される。
接続パッドに粘着性フラックスが塗布された基板を用意し、
ヘッドの内筒上端の導電性ボール供給口を介して導電性ボール仮貯留室に導電性ボールを供給状態に維持し、
基板の導電性ボール搭載対象区域の上方にヘッドを保持し、
ヘッドを降下させ、マスクの開口と基板上の接続パッドとを位置合わせし、マスクと基板表面との間に導電性ボールの直径未満のクリアランスをとって停止させ、
ヘッドの内筒を振動させ、導電性ボール仮貯留室の導電性ボールを篩を通してマスク上に落下させ、マスクの開口を介して接続パッド上に導電性ボールを配列し、
給気口から給気しつつ排気口から排気してマスク上に外部へ向かう気流を起こし、マスク上に残った導電性ボールを外部へ排出し、
ヘッドを上昇させ、基板の別の導電性ボール搭載対象区域の上方に移動させて保持することを特徴とする導電性ボールの搭載方法も提供される。
外枠とその内部の内筒とを有するヘッドを有し、
外枠は、内筒との間の間隙への給気口と該間隙からの排気口とを備え、かつ、下端には導電性ボールの搭載位置に開口を有するマスクを備え、
内筒は、外枠内のマスク上方に配置され、篩によって上部と下部の空間に仕切られ、上部の空間は内筒上端に導電性ボール供給口が開口した導電性ボール仮貯留室を構成し、下部の空間は下端が開放され、
振動装置により、内筒が外枠に実質的に拘束されずに振動可能であることを特徴とする導電性ボールの搭載装が提供される。
接続パッドに粘着性フラックスが塗布された基板を用意し、
ヘッドの内筒上端の導電性ボール供給口を介して導電性ボール仮貯留室に導電性ボールを供給状態に維持し、
基板の導電性ボール搭載対象区域の上方にヘッドを保持し、
ヘッドを降下させ、マスクの開口と基板上の接続パッドとを位置合わせし、マスクと基板表面との間に導電性ボールの直径未満のクリアランスをとって停止させ、
ヘッドの内筒を振動させ、導電性ボール仮貯留室の導電性ボールを篩を通してマスク上に落下させ、マスクの開口を介して接続パッド上に導電性ボールを搭載し、
給気口から給気しつつ排気口から排気してマスク上に外部へ向かう気流を起こし、マスク上に残った導電性ボールを排気口の手前の前記間隙内に保持するか、または外部へ排出し、
ヘッドを上昇させ、基板の別の導電性ボール搭載対象区域の上方に移動させて保持することを特徴とする導電性ボールの搭載方法も提供される。
本発明においては、導電性ボールとしては、はんだボールの他に、銅ボールやニッケルボール等の金属ボールや、銅ボールやニッケルボール等の金属ボールのコアの表面にはんだ層を設けたボール、樹脂ボールのコアの表面にはんだ層を設けたボール、樹脂ボールのコアの表面に銅やニッケル等の金属層を設けたボールを搭載できる。
図1に、第1発明によるはんだボール搭載装置のヘッドを示す。
なお、外枠に取り付けられたマスクは、交換可能に取り付けられている。搭載装置のマスクのみ交換すれば、あらゆる品種の基板に導電性ボールを搭載可能となる。よって、ヘッド自体の交換は不要となるため、製造手番短縮や、コスト低減を図れる。同様の理由で、篩22も交換可能に取り付けられている。
図7に、第2発明によるはんだボール搭載装置のヘッドを示す。
第2発明のはんだボール搭載装置は、外枠10とその内部の内筒20とを有するヘッド32を有する。
ヘッドが次のボール搭載位置で位置決めされた時点で、エアの供給、排気を停止することにより、余分なボールは、再びマスク上に戻り、搭載に利用される。
実施形態2は、実施形態1に比べ、ヘッドの構造・機構を簡略化できる。
12 開口
14 マスク
16 排気口
18 流入路
20 内筒
22 篩
23 篩のメッシュ
24 上部空間(はんだボール仮貯留室)
25 間隙
26 下部空間
28 はんだボール供給口
29 給気口
30、32 ヘッド
34 給気口
36 排気口
38 仕切板
40 基板(多層回路基板)
42 多層回路部
44 ソルダーレジスト層
46 接続パッド
48 開口
50 マスク
52 開口
54 スキージ
56 フラックス
60 はんだボール
A はんだボール配列対象区域
G ギャップ
Claims (6)
- 基板上の複数の接続パッド上に各1個の導電性ボールを搭載する装置であって、
外枠とその内部の内筒とを有するヘッドを有し、
該外枠の下端に、該導電性ボールの搭載位置に開口を有するマスクと、該マスクの上面から外部へ排気する排気口とを備え、
該内筒は、該外枠内の該マスクの上方に配置され、篩によって上部と下部の空間に仕切られ、該上部の空間は該内筒の上端に導電性ボール供給口が開口した導電性ボール仮貯留室を構成し、該下部の空間は下端が開放され、該篩の下方へ外部から給気する給気口を有し、
振動装置により、該内筒が該外枠に拘束されずに振動可能であることを特徴とする導電性ボールの搭載装置。 - 請求項1において、該マスクが導電性であることを特徴とする導電性ボールの搭載装置。
- 請求項1または2記載の導電性ボールの搭載装置を用いて導電性ボールを搭載する方法であって、
該接続パッドに粘着性フラックスが塗布された基板を用意し、
該ヘッドの該内筒の上端の該導電性ボール供給口を介して該導電性ボール仮貯留室に該導電性ボールを供給状態に維持し、
該基板の導電性ボール搭載対象区域の上方に該ヘッドを保持し、
該ヘッドを降下させ、該マスクの開口と該基板上の該接続パッドとを位置合わせし、該マスクと該基板表面との間に該導電性ボールの直径未満のクリアランスをとって停止させ、
該ヘッドの該内筒を振動させ、該導電性ボール仮貯留室の該導電性ボールを該篩を通して該マスク上に落下させ、該マスクの開口を介して該接続パッド上に該導電性ボールを搭載し、
該給気口から給気しつつ該排気口から排気して該マスク上に外部へ向かう気流を起こし、該マスク上に残った該導電性ボールを外部へ排出し、
該ヘッドを上昇させ、該基板の別の導電性ボール搭載対象区域の上方に移動させて保持することを特徴とする導電性ボールの搭載方法。 - 基板上の複数の接続パッド上に各1個の導電性ボールを搭載する装置であって、
外枠とその内部の内筒とを有するヘッドを有し、
該外枠は、該内筒との間の間隙への給気口と該間隙からの排気口とを備え、かつ、下端には該導電性ボールの搭載位置に開口を有するマスクを備え、
該内筒は、該外枠内の該マスクの上方に配置され、篩によって上部と下部の空間に仕切られ、該上部の空間は該内筒の上端に導電性ボール供給口が開口した導電性ボール仮貯留室を構成し、該下部の空間は下端が開放され、
振動装置により、該内筒が該外枠に拘束されずに振動可能であることを特徴とする導電性ボールの搭載装置。 - 請求項4において、該マスクが導電性であることを特徴とする導電性ボールの搭載装置。
- 請求項4または5記載の導電性ボールの搭載装置を用いて導電性ボールを搭載する方法であって、
該接続パッドに粘着性フラックスが塗布された基板を用意し、
該ヘッドの該内筒の上端の該導電性ボール供給口を介して該導電性ボール仮貯留室に該導電性ボールを供給状態に維持し、
該基板の導電性ボール搭載対象区域の上方に該ヘッドを保持し、
該ヘッドを降下させ、該マスクの開口と該基板上の該接続パッドとを位置合わせし、該マスクと該基板表面との間に該導電性ボールの直径未満のクリアランスをとって停止させ、
該ヘッドの該内筒を振動させ、該導電性ボール仮貯留室の該導電性ボールを該篩を通して該マスク上に落下させ、該マスクの開口を介して該接続パッド上に該導電性ボールを搭載し、
該給気口から給気しつつ該排気口から排気して該マスク上に外部へ向かう気流を起こし、該マスク上に残った該導電性ボールを該排気口の手前の前記間隙内に保持するか、または外部へ排出し、
該ヘッドを上昇させ、該基板の別の導電性ボール搭載対象区域の上方に移動させて保持することを特徴とする導電性ボールの搭載方法。
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US12/178,270 US7597233B2 (en) | 2007-07-24 | 2008-07-23 | Apparatus and method of mounting conductive ball |
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