JP2019089193A - Cmp研磨パッドのための高いuv透過率を有する脂肪族uv硬化ポリウレタン光学的終点検出窓 - Google Patents
Cmp研磨パッドのための高いuv透過率を有する脂肪族uv硬化ポリウレタン光学的終点検出窓 Download PDFInfo
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Abstract
Description
本発明の一側面において、終点検出窓組成物は、脂環式ジカルバミン酸エステルを介してポリエーテル、ポリカーボネート若しくはポリエステル鎖に結合した2つの(メタ)アクリレート末端基を有する直鎖脂環式ウレタンマクロモノマー、又はその脂環式ウレタンオリゴマーと、脂肪族開始剤、例えば脂肪族光開始剤又は脂肪族熱開始剤との反応混合物を含み、ウレタンマクロモノマー中の総反応及び未反応イソシアネート含量は3.3〜10重量%、又は、好ましくは、4〜9重量%の範囲であり、そして、更に、該組成物は、5重量%未満、又は、好ましくは、2重量%未満の未反応(メタ)アクリレートモノマーを含み、かつ、更に、未反応イソシアネートを実質的に含有しない。
DPT=(IWSi−IWD)÷(IASi−IAD)
式中、IWSi、IWD、IASi、及びIADは、Verity SP2006 Spectral Interferometer(SD1024Fスペクトルグラフ、キセノンフラッシュランプ及び3mm光ファイバーケーブルを含む)を使用して、3mm光ファイバーケーブルの発光面を、起点において終点検出窓の第一面に対して(かつ垂直に)設置し、窓の厚さTWに光を向け、そして、第一面と実質的に平行する終点検出窓の第二面に対して設置された表面から窓の厚さTWを通過して反射して戻ってきた光の強度を起点において測定することによって測定され;式中、IWSiは、起点から窓を通過して、窓の第二面に対して設置されたシリコンブランケットウェーハの表面から反射して窓を通って起点に戻ってきた光の強度の測定値であり;式中、IWDは、起点から窓を通過して、黒体の表面から反射して窓を通って起点に戻ってきた光の強度の測定値であり;式中、IASiは、起点から終点検出窓の厚さTWに等価な空気の厚さを通過して、3mm光ファイバーケーブルの発光面に垂直に設置されたシリコンブランケットウェーハの表面から反射し、そして、反射して空気の厚さを通過して起点に戻ってきた光の強度の測定値であり;そして、式中、IADは、3mm光ファイバーケーブルの発光面での黒体から反射された光の強度の測定値である。
ヒドロキシル官能性アルキル(メタ)アクリレート、例えばC1〜C4ヒドロキシアルキルアクリレート、C1〜C4ヒドロキシアルキルメタクリレート、又はグリセロール(メタ)アクリレート、好ましくは、C1〜C4ヒドロキシアルキルメタクリレート、好ましくは、ヒドロキシエチルメタクリレート(HEMA)から選択されるもので更に末端封止される。(メタ)アクリレートは過剰に存在してよい。かくして、配合物は、脂肪族光開始剤、例えばカンファーキノンで、好ましくは、第三級アミン系共開始剤又は促進剤、例えばN−メチルジエタノールアミンでも硬化される。
H12MDI:メチレンビス(4−シクロヘキシルイソシアネート)、ジシクロヘキシルメタン−4,4’−ジイソシアネートとしても知られる;
HEMA;ヒドロキシエチルメタクリレート;
ポリマージオール1:およそ650g/molの重量平均分子量を有する直鎖のヒドロキシル末端の脂肪族ポリカーボネートジオール、Desmophen(商標)C XP 2716(Covestro AG,Leverkusen,DE)として販売されている;
ポリマージオール2:プロピレングリコールとプロピレンオキシドとを反応させることによって生成された直鎖ポリ(プロピレングリコール)(PPG)(ここで、プロピレングリコールは、開始剤として作用する)、1,000MW(重量平均分子量);(Voranol(商標)220−110,Dow Polyurethanes,The Dow Chemical Company,Midland,MI(Dow)として販売されている);
ポリマージオール3:直鎖ポリ(プロピレングリコール)(PPG)、1,200MW(重量平均分子量);(Voranol(商標)220−094(Dow)として販売されている);及び
ポリマージオール4:直鎖ポリ(プロピレングリコール)(PPG)、2,000MW(重量平均分子量);(Voranol(商標)220−056(Dow)として販売されている)。
上の式において、TDark,airは、ゼロ透過点として設定された窓なし(空のスペーサーを使用)の「暗」信号である。TSi,airは、空のスペーサーを覆う反射ミラーとして機能するシリコンウェーハを用いた透過である。この値を透過値100%として正規化する。TDark,windowは、窓表面からの反射された光を表す、暗所における窓の測定値である。TSi,windowは、シリコンバッキングを有する窓を通過して伝達された光の測定値である。%透過が高いほど良い。300nmにおける許容される透過結果は、10%以上である。
Claims (10)
- 磁性基板、光学基板及び半導体基板の少なくとも1つから選択される基板を研磨するためのケミカルメカニカル(CMP)研磨パッドであって、脂環式ジカルバミン酸エステルを介してポリエーテル、ポリカーボネート若しくはポリエステル鎖に結合した2つの(メタ)アクリレート末端基を有する直鎖脂環式ウレタンマクロモノマー、又はその脂環式ウレタンオリゴマーと脂肪族開始剤との反応混合物の硬化生成物である1以上の終点検出窓を有するCMP研磨パッドを含み、ウレタンマクロモノマー中の総イソシアネート含量が3.3〜10重量%の範囲であり、そして、更に、該組成物が、5重量%未満の未反応(メタ)アクリレートモノマーを含み、かつ、未反応イソシアネートを実質的に含有しない、CMP研磨パッド。
- 直鎖脂環式ウレタンマクロモノマーの脂環式ジカルバメートが、C6〜C18脂環式基を含有する、請求項1に記載のケミカルメカニカル(CMP)研磨パッド。
- 直鎖脂環式ウレタンマクロモノマーの脂環式ジカルバメートが、C10〜C16脂環式基を含有する、請求項1に記載のケミカルメカニカル(CMP)研磨パッド。
- 直鎖脂環式ウレタンマクロモノマーの脂環式ジカルバメートが、ポリマージオールの活性水素と、1,4−シクロヘキサンジイソシアネート、4,4’−ジシクロヘキシルメタンジイソシアネート、又はイソホロンジイソシアネートから選択される脂環式ジイソシアネートとの反応生成物である、請求項1に記載のケミカルメカニカル(CMP)研磨パッド。
- 直鎖脂環式ウレタンマクロモノマーが、450〜2,000の平均分子量を有するポリエーテル、ポリカーボネート又はポリエステル鎖を有するポリマージオールのカルバメートを含む、請求項1に記載のケミカルメカニカル(CMP)研磨パッド。
- 直鎖脂環式ウレタンマクロモノマーが、600〜1,500の平均分子量を有するポリエーテル、ポリカーボネート又はポリエステル鎖を有するポリマージオールのカルバメートを含む、請求項5に記載のケミカルメカニカル(CMP)研磨パッド。
- ポリマージオールが、ポリプロピレングリコール;ポリエチレングリコール;ポリテトラメチレングリコール;ポリカーボネート基含有ジオール;又はそれらのブロックコポリマー若しくは混合物を含む、請求項5に記載のケミカルメカニカル(CMP)研磨パッド。
- 2つの(メタ)アクリレート末端基を有する直鎖脂環式ウレタンマクロモノマーが、2〜10個の脂環式ジカルバメート基を含み、かつ、1,000〜10,000の重量平均分子量を有する、請求項1に記載のケミカルメカニカル(CMP)研磨パッド。
- 2つの(メタ)アクリレート末端基を有する直鎖脂環式ウレタンマクロモノマーが、
エステル化形態で、ヒドロキシル官能性アルキル(メタ)アクリレートを含有する、請求項1に記載のケミカルメカニカル(CMP)研磨パッド。 - 脂肪族開始剤が光開始剤であり、そして、光開始剤の量が、反応混合物の総固形分重量に基づいて、0.05〜0.5重量%、又は、好ましくは、0.08〜0.15重量%の範囲である、請求項1に記載のケミカルメカニカル(CMP)研磨パッド。
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| US15/815,121 | 2017-11-16 | ||
| US15/815,121 US10465097B2 (en) | 2017-11-16 | 2017-11-16 | Aliphatic UV cured polyurethane optical endpoint detection windows with high UV transparency for CMP polishing pads |
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| US12006442B2 (en) * | 2019-09-11 | 2024-06-11 | Applied Materials, Inc. | Additive manufacturing of polishing pads |
| JP2023547826A (ja) * | 2020-10-19 | 2023-11-14 | シーエムシー マテリアルズ リミティド ライアビリティ カンパニー | 化学機械研磨パッドのために使用される紫外線硬化性樹脂 |
| US20250144765A1 (en) * | 2021-01-14 | 2025-05-08 | Fujibo Holdings, Inc. | Polishing pad, method for producing polishing pad, and method for polishing surface of optical material or semiconductor material |
| JP7733464B2 (ja) * | 2021-03-30 | 2025-09-03 | 富士紡ホールディングス株式会社 | 研磨パッド及び研磨パッドの製造方法 |
| KR102488101B1 (ko) * | 2021-05-04 | 2023-01-12 | 에스케이엔펄스 주식회사 | 연마 패드, 연마 패드의 제조 방법 및 이를 이용한 반도체 소자의 제조 방법 |
| WO2023244740A1 (en) * | 2022-06-15 | 2023-12-21 | Cmc Materials Llc | Uv-curable resins for chemical mechanical polishing pads |
| CN115873207B (zh) * | 2023-02-17 | 2023-06-27 | 山东一诺威聚氨酯股份有限公司 | 高性能cmp聚氨酯抛光垫及其制备方法 |
| WO2024233285A1 (en) * | 2023-05-09 | 2024-11-14 | Cmc Materials Llc | Dual-cure resin for preparing chemical mechanical polishing pads |
| WO2026095449A1 (ko) * | 2024-10-31 | 2026-05-07 | 엔펄스 주식회사 | 투과율이 개선된 연마패드, 이의 제조방법, 및 이에 사용되는 윈도우 블록 |
| CN119119453A (zh) * | 2024-11-13 | 2024-12-13 | 合肥普力先进材料科技有限公司 | 柠檬酸型聚碳酸酯聚醚多元醇的生产工艺和反应时间实时预测方法 |
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| JP7207963B2 (ja) | 2023-01-18 |
| CN109794848A (zh) | 2019-05-24 |
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