JP5913630B2 - ワイヤーボンディング検査システムおよび方法 - Google Patents
ワイヤーボンディング検査システムおよび方法 Download PDFInfo
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Description
[発明の実施のための形態]
次に、図2を参照して、図1に例示されたような半導体チップが実装された基板の、ワイヤーボンディングが正常であるか否かを検査するシステムについて、詳しく説明する。
110…照明装置
120…カメラ
130…カメラ駆動部
140…映像処理部
150…保存部
160…正常判断部
170…出力部
180…制御部
Claims (8)
- 半導体チップが実装された基板を撮影するカメラと、
前記カメラにより撮影された基板撮影映像で検査対象ワイヤー部分を検出する映像処理部と、
前記検出された検査対象ワイヤー部分が正常に連結されているか否かの判断基準となる基準データを保存する保存部と、
前記検査対象ワイヤー部分の角度と基準データを用いてワイヤーが正常に連結されているか否かを判断する正常判断部と、を含み、
前記検査対象ワイヤー部分は、ワイヤーのボール部分とスティッチ部分であり、前記基準データは、前記ボール部分の方向と前記スティッチ部分の方向とがなす角度に対する誤差許容角度を含み、
前記正常判断部は、前記ボール部分の方向と前記スティッチ部分の方向とがなす角度が前記誤差許容角度以内である場合、正常に連結されていると判断することを特徴とするワイヤーボンディング検査システム。 - 前記誤差許容角度は、ワイヤーの長さが短いほど大きくなることを特徴とする、請求項1に記載のワイヤーボンディング検査システム。
- 前記カメラの高さを調整するカメラ駆動部と、
前記カメラが高さを異にしながら複数の基板撮影映像を撮影するように前記カメラ駆動部を制御する制御部と、をさらに含むことを特徴とする、請求項1に記載のワイヤーボンディング検査システム。 - 前記カメラの高さは、前記カメラの被写界深度と前記検査対象ワイヤー部分の高さに基づいて設定されることを特徴とする、請求項3に記載のワイヤーボンディング検査システム。
- 半導体チップが実装された基板をカメラを用いて撮影する段階と、
前記カメラにより撮影された基板撮影映像で検査対象ワイヤー部分を検出する段階と、
検出された前記検査対象ワイヤー部分の角度と基準データを用いてワイヤーが正常に連結されているか否かを判断する段階と、を含み、
前記検査対象ワイヤー部分は、ワイヤーのボール部分とスティッチ部分であり、前記基準データは、前記ボール部分の方向と前記スティッチ部分の方向とがなす角度に対する誤差許容角度を含み、前記ボール部分の方向と前記スティッチ部分の方向とがなす角度が前記誤差許容角度以内である場合、正常に連結されていると判断することを特徴とするワイヤーボンディング検査方法。 - 前記誤差許容角度は、ワイヤーの長さが短いほど大きくなることを特徴とする、請求項5に記載のワイヤーボンディング検査方法。
- 前記半導体チップが実装された基板を撮影する段階は、
前記カメラが撮影高さを異にしながら複数の基板撮影映像を撮影する段階を含むことを特徴とする、請求項5に記載のワイヤーボンディング検査方法。 - 前記カメラの撮影高さは、前記カメラの被写界深度と前記検査対象ワイヤー部分の高さに基づいて設定されることを特徴とする、請求項7に記載のワイヤーボンディング検査方法。
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KR1020110138796A KR101180350B1 (ko) | 2011-12-21 | 2011-12-21 | 와이어 본딩 검사 시스템 및 방법 |
KR10-2011-0138796 | 2011-12-21 | ||
PCT/KR2012/007782 WO2013094856A1 (ko) | 2011-12-21 | 2012-09-27 | 와이어 본딩 검사 시스템 및 방법 |
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JP3385916B2 (ja) | 1997-06-10 | 2003-03-10 | 松下電器産業株式会社 | ワイヤボンディングにおけるワイヤの検出方法 |
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KR101028335B1 (ko) * | 2009-07-31 | 2011-04-11 | (주) 인텍플러스 | 와이어 검사 장치 |
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