JP2022031694A - 制御された孔隙率を有する印刷された化学機械研磨パッド - Google Patents
制御された孔隙率を有する印刷された化学機械研磨パッド Download PDFInfo
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Abstract
Description
従来は、研磨面24内にスラリを運ぶために、研磨面24に形成される溝26が、通常機械加工される。しかしながら、上記溝のプロファイルは、フライス加工、旋盤又は加工プロセスによって限定される。
Claims (15)
- 研磨パッドを製造する方法であって、
前記研磨パッドの研磨層のポリマーマトリクス内に導入すべきボイドの所望の分布を決定することと、
3Dプリンタによって読み取られるように構成され、ポリマーマトリクス前駆体が堆積されるべき複数の第1の場所を指定し、材料が堆積されるべきでないボイドの所望の分布に対応する複数の第2の場所を指定する電子制御信号を生成することと、
前記3Dプリンタで、前記複数の第1の場所に対応する前記ポリマーマトリクスの複数の層を連続的に堆積させることであって、前記ポリマーマトリクスの前記複数の層の各層が、ノズルから前記ポリマーマトリクス前駆体を放出することによって堆積される、連続的に堆積させることと、
前記ボイドの所望の分布を有する固化されたポリマーマトリクスを形成するために、前記ポリマーマトリクス前駆体を固化することと
を含む方法。 - 前記ボイドの所望の分布を決定することは、前記ボイドのサイズ、及び前記ポリマーマトリクス内の前記ボイドの空間的場所から成るグループから選択される一又は複数のパラメータを決定することを含む、請求項1に記載の方法。
- 前記研磨層の上面に溝を形成するために、前記研磨層の選択エリアに印刷することを含み、前記溝はポリマーマトリクス前駆体が堆積されない領域を含む、請求項1に記載の方法。
- 前記ポリマーマトリクス前駆体を固化することは、前記3Dプリンタから前記ポリマーマトリクス前駆体が分配された後、前記ポリマーマトリクス前駆体が前記層の隣接位置に堆積される前に、インシトゥで前記ポリマーマトリクス前駆体を硬化させることを含む、請求項1に記載の方法。
- 前記ポリマーマトリクス前駆体を硬化させることは、紫外線(UV)又は赤外線(IR)硬化を含む、請求項4に記載の方法。
- 前記固化したポリマーマトリクスはポリウレタンを含む、請求項1に記載の方法。
- 前記研磨パッドのバッキング層のポリマーマトリクス内に導入すべきボイドの第2の所望の分布を決定することを含み、前記バッキング層の前記ポリマーマトリクスの前記ボイドの第2の所望の分布は、前記研磨パッドの前記研磨層の前記ボイドの所望の分布とは異なる、請求項1に記載の方法。
- 前記バッキング層の前記ポリマーマトリクスの前記ボイドの第2の所望の分布は、前記バッキング層が前記研磨層よりも圧縮性になるように、前記研磨層の前記ボイドの所望の分布よりも高い密度のボイドを有する、請求項7に記載の方法。
- 前記バッキング層を形成するために、前記3Dプリンタで第2の複数の層を連続的に堆積させることを含む、請求項7に記載の方法。
- 前記研磨層が前記バッキング層に直接接着されるように、中間接着層を使用せずに、前記3Dプリンタによって前記研磨層が前記バッキング層に直接印刷される、請求項9に記載の方法。
- 3Dプリンタで複数の層を連続的に堆積させることを含み、前記複数の研磨層の各層は、研磨材料部分と、ウインドウ部分とを含み、前記研磨材料部分は、第1のノズルから研磨材料前駆体を放出し、前記研磨材料前駆体を固化して固化された研磨材料を形成することによって堆積され、前記ウインドウ部分は、第2のノズルからウインドウ前駆体を放出し、前記ウインドウ前駆体を固化して、固化されたウインドウを形成することによって堆積される、研磨パッドを製造する方法。
- 前記研磨材料前駆体と前記ウインドウ前駆体の硬化により、同じ組成を有する複数のポリマーマトリクスが形成される、請求項11に記載の方法。
- 前記研磨材料前駆体は不透明性誘発添加物を含み、ウインドウ前駆体は上記添加物を含まない、請求項12に記載の方法。
- ポリマーマトリクス前駆体を放出するためのノズルを有する3Dプリンタと、
研磨パッドの研磨層のポリマーマトリクス内に導入すべきボイドの所望の分布を決定し、
前記ポリマーマトリクス前駆体が堆積されるべき複数の第1の場所を指定し、材料が堆積されるべきでない前記ボイドの所望の分布に対応する複数の第2の場所を指定する電子制御信号を前記3Dプリンタへ送り、前記複数の第1の場所に対応する前記ポリマーマトリクスの複数の層であって、前記ポリマーマトリクス前駆体の固化により前記ボイドの所望の分布を有する固化されたポリマーマトリクスが形成されるように、ノズルから前記ポリマーマトリクス前駆体を放出することによって、各層が堆積される、ポリマーマトリクスの複数の層を、前記3Dプリンタで連続的に堆積させるように構成されたコンピュータと
を備える、研磨パッドを製造するためのシステム。 - 研磨材料前駆体を放出するための第1のノズルと、ウインドウ前駆体を放出するための第2のノズルとを有する3Dプリンタと、
前記3Dプリンタに前記第1のノズルから前記研磨材料前駆体を放出し、前記第2のノズルから前記ウインドウ前駆体を放出することによって、複数の層を連続的に堆積させるように構成されたコンピュータであって、前記複数の研磨層の各層が、研磨材料部分とウインドウ部分を含み、前記研磨材料前駆体の固化により固化された研磨材料が形成され、前記ウインドウ前駆体の固化により固化されたウインドウが形成される、コンピュータと
を備える、研磨パッドを製造するためのシステム。
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TW201529652A (zh) | 2015-08-01 |
KR20210116716A (ko) | 2021-09-27 |
CN105917448B (zh) | 2020-01-17 |
KR102305544B1 (ko) | 2021-09-24 |
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