JP2007531276A - 成分を満たした複数の孔を有するcmp多孔質パッド - Google Patents
成分を満たした複数の孔を有するcmp多孔質パッド Download PDFInfo
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- JP2007531276A JP2007531276A JP2007505008A JP2007505008A JP2007531276A JP 2007531276 A JP2007531276 A JP 2007531276A JP 2007505008 A JP2007505008 A JP 2007505008A JP 2007505008 A JP2007505008 A JP 2007505008A JP 2007531276 A JP2007531276 A JP 2007531276A
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- polishing pad
- polishing
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Images
Classifications
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- C—CHEMISTRY; METALLURGY
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- H—ELECTRICITY
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- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
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Abstract
Description
本発明は、下記段階;
(i)研磨すべき加工物を準備する段階;
(ii)上記加工物を、本発明の研磨パッドを含む化学的機械的研磨系と接触させる段階;そして
(iii)上記加工物の表面の少なくとも一部を、上記研磨システムで削り、上記加工物を研磨する段階:
を含む加工物の研磨法をさらに提供する。
本発明はまた、下記段階;
(i)気体で満たされた複数の孔を有する多孔質のポリマー材料を準備する段階;
(ii)上記材料に圧力差に置く段階;
(iii)上記材料の少なくとも一面を、上記成分を含む媒体に接触させる段階;
(iv)上記媒体を、上記複数の孔の少なくとも一部に浸透させる段階;そして
(v)成分で満たされた複数の孔を含むポリマー材料を、研磨パッドに形成する段階:
を含む研磨パッドの製法を提供する。
本発明の研磨パッドには、複数の孔を有するポリマー材料が含まれる。上記複数の孔には、連続気泡型孔、独立気泡型孔又はそれらの組み合わせが含まれうる。例えば、上記複数の孔には、70%以上(例えば、80%以上又は90%以上)の連続気泡型の複数の孔が含まれる。上記複数の孔にはまた、70%以上(例えば、80%以上又は90%以上)の独立気泡型の複数の孔が含まれる。上記複数の孔は、任意の好適な空隙体積(すなわち、孔体積)を有しうる。例えば、上記空隙体積は、75%以下(例えば、65%以下、55%以下、又は45%以下)でありうる。
本発明の研磨パッドを作成するための好ましい方法には、下記段階;
(i)気体で満たされた複数の孔を含むポリマー材料を準備する段階;
(ii)上記ポリマー材料に圧力差に置く段階;
(iii)上記ポリマー材料の少なくとも一面を、液体、固体又はそれらの混合物から選択される成分を含む媒体に接触させる段階;
(iv)上記成分を含む上記媒体を、上記ポリマー材料の複数の孔の少なくとも一部に浸透させる段階;そして
(v)成分で満たされた複数の孔を含むポリマー材料を、化学的機械的研磨用パッドに形成させる段階:
を含む。
典型的には、上記装置には、下記、
(a)定盤;使用時には、動き、そして環状(orbital)、直線又は円形運動に起因する速度を有する、
(b)本発明の研磨パッド;上記定盤と接触し、使用時には、上記定盤と一緒に動く、及び
(c)キャリア;研磨すべき加工物と接触させることを目的とする研磨パッドの表面と接触し、そして動くことによって、研磨されるべき加工物を保持する、
が含まれる。
加工物の研磨は、上記加工物を研磨パッドに接触させて置き、次いで、当該研磨パッドを上記加工物に対して動かすことによって行われ、典型的には、当該加工物の少なくとも一部を削って上記加工物を研磨するように、それらの間に研磨組成物を入れる。上記CMP装置は、任意の好適なCMP装置であってよく、それらの多くは、当業者に公知である。本発明の研磨パッドは、往復型(linear)の研磨ツールと共に用いられうる。
液状担体(例えば、水);及び
随意選択的な
研磨材(例えば、アルミナ、シリカ、チタニア、セリア、ジルコニア、ゲルマニア、マグネシア、及びそれらの組み合わせ);
酸化剤(例えば、過酸化水素及び過硫酸アンモニウム);
腐食防止剤(例えば、ベンゾトリアゾール);
膜形成剤(例えば、ポリアクリル酸及びポリスチレンスルホン酸);
錯化剤(例えば、モノ−、ジ−、及びポリ−カルボン酸、ホスホン酸、並びにスルホン酸);
pH調整剤(例えば、塩酸、硫酸、リン酸、水酸化ナトリウム、水酸化カリウム、及び水酸化アンモニウム);
緩衝剤(例えば、ホスフェート緩衝剤、アセテート緩衝剤、及びスルフェート緩衝剤);
界面活性剤(例えば、非イオン性界面活性剤);
それらの塩;及び
それらの組み合わせ:
から成る群から選択される1種又は複数種の添加剤が含まれる。
研磨組成物の成分の選択は、研磨されるべき加工物の種類に、一部依存する。
これらの例は、種々の条件下における成分のポリマーフォーム内への吸収(具体的には、カーボンブラックのポリオレフィンフォーム内への吸収)を実証するものである。これらの各例において、フォーム試料を、上記成分を含む媒体の中に置き、次いで、減圧チャンバー内で、0.5atmの圧力にさらした。これら各例の詳細を、表1で説明する。
Claims (51)
- ポリマー材料と、液体、固体又はそれらの混合物から選択される成分とを含む化学的機械的研磨用パッドであって、
ここで、前記ポリマー材料が複数の孔を有し、そして前記成分が前記複数の孔内に配置されている、
前記化学的機械的研磨用パッド。 - 前記成分が、前記研磨パッドの表面から1000μm以下内に配置される前記複数の孔の70%以上の中に配置されている、請求項1に記載の研磨パッド。
- 前記ポリマー材料が、熱可塑性ポリマー又は熱硬化性ポリマーである、請求項1に記載の研磨パッド。
- 前記熱可塑性ポリマー又は前記熱硬化性ポリマーが、ポリウレタン、ポリオレフィン、ポリビニルアルコール、ポリビニルアセテート、ポリカーボネート、ポリアクリル酸、ポリアクリルアミド、ポリエチレン、ポリプロピレン、ナイロン、フルオロカーボン、ポリエステル、ポリエーテル、ポリアミド、ポリイミド、ポリテトラフルオロエチレン、ポリエーテルエーテルケトン、それらの共重合体、及びそれらの混合物から成る群から選択される、請求項3に記載の研磨パッド。
- 前記熱可塑性ポリマー又は前記熱硬化性ポリマーが、ポリウレタン及びポリオレフィンから成る群から選択される、請求項4に記載の研磨パッド。
- 前記成分が液体である、請求項1に記載の研磨パッド。
- 前記液体が、溶媒と溶質とを含む溶液である、請求項6に記載の研磨パッド。
- 前記溶液が、少なくとも2つの溶液相を含む、請求項7に記載の研磨パッド。
- 前記溶液が、40℃以下において、少なくとも2つの溶液相を含む、請求項8に記載の研磨パッド。
- 前記溶液が、1つの溶液相を含む、請求項7に記載の研磨パッド。
- 前記溶液が、40℃以下において、1つの溶液相を含む、請求項10に記載の研磨パッド。
- 前記溶液が、熱可逆性ゲルである、請求項7に記載の研磨パッド。
- 前記熱可逆性ゲルが、ポリエチレン及びキシレンを含む、請求項12に記載の研磨パッド。
- 前記成分が固体である、請求項1に記載の研磨パッド。
- 前記固体が、1μm以下の最大直径を有する粒子から本質的に成る、請求項14に記載の研磨パッド。
- 前記固体が導電性である、請求項14に記載の研磨パッド。
- 前記固体が、研磨粒子から本質的に成る、請求項14に記載の研磨パッド。
- 前記研磨粒子が、アルミナ、シリカ、チタニア、セリア、ジルコニア、ゲルマニア、マグネシア、それらの共形成生成物、及びそれらの組み合わせから成る群から選択される金属酸化物を含む、請求項17に記載の研磨パッド。
- 前記研磨パッドが、2g/cm3以下の密度を有する、請求項1に記載の研磨パッド。
- 前記研磨パッドが、75%以下の空隙体積を有する、請求項1に記載の研磨パッド。
- 前記研磨パッドが、10孔数/cm3以上の孔密度を有する、請求項1に記載の研磨パッド。
- 平均孔直径が、0.1μm〜5000μmである、請求項1に記載の研磨パッド。
- 前記研磨パッドが、溝を含む研磨表面をさらに含む、請求項1に記載の研磨パッド。
- 前記研磨パッドが、光透過領域をさらに含む、請求項1に記載の研磨パッド。
- 前記光透過領域が、190nm〜3500nmの一又は複数の波長において、少なくとも10%の光透過率を有する、請求項24に記載の研磨パッド。
- 前記研磨パッドが研磨粒子をさらに含む、請求項1に記載の研磨パッド。
- 前記研磨粒子が、アルミナ、シリカ、チタニア、セリア、ジルコニア、ゲルマニア、マグネシア、それらの共形成生成物、及びそれらの組み合わせから成る群から選択される金属酸化物を含む、請求項26に記載の研磨パッド。
- 前記複数の孔が、連続気泡型の複数の孔を70%以上含む、請求項1に記載の研磨パッド。
- 前記複数の孔が、独立気泡型の複数の孔を70%以上含む、請求項1に記載の研磨パッド。
- 前記研磨パッドが、第一の表面と、向かい合う第二の表面と、前記第一及び第二の表面の間の厚さとを有し、
ここで、前記複数の孔の少なくとも一部が、前記第一の表面と前記研磨パッドの前記厚さの10%以下とによって規定される前記研磨パッドの第一の領域内に配置され、そして
前記成分が、前記第一の領域内の前記複数の孔の空隙体積の70%以上の中に配置されている、
請求項1に記載の研磨パッド。 - 前記複数の孔の少なくとも一部が、前記第二の表面と前記研磨パッドの前記厚さの10%以下とによって規定される前記研磨パッドの第二の領域内に配置され、そして
前記成分が、前記第二の領域内の前記複数の孔の空隙体積の70%以上の中に配置されている、
請求項30に記載の研磨パッド。 - 前記第一の領域が、10cm3以下の体積を有する、請求項30に記載の研磨パッド。
- 前記第二の領域が、10cm3以下の体積を有する、請求項31に記載の研磨パッド。
- 次の各段階、
(i)研磨すべき加工物を準備する段階、
(ii)前記加工物を、請求項1に記載の研磨パッドを含む化学的機械的研磨系に接触させる段階、そして
(iii)前記加工物の表面の少なくとも一部を、前記研磨システムを用いて削り、前記加工物を研磨する段階、
を含む、基板研磨法。 - 前記研磨パッドが、研磨粒子、ポリマー粒子、複合粒子、水溶性粒子、及びそれらの組み合わせから成る群から選択される研磨粒子をさらに含む、請求項34に記載の方法。
- 前記研磨粒子が、アルミナ、シリカ、チタニア、セリア、ジルコニア、ゲルマニア、マグネシア、それらの共形成生成物、及びそれらの組み合わせから成る群から選択される金属酸化物を含む、請求項35に記載の方法。
- 研磨終点をその場で検出する段階、
をさらに含む、請求項34に記載の方法。 - 次の各段階、
(i)気体で満たされた複数の孔を含むポリマー材料を準備する段階、
(ii)前記ポリマー材料に圧力差に置く段階、
(iii)前記ポリマー材料の少なくとも一面を、液体、固体又はそれらの混合物から選択される成分を含む媒体に接触させる段階、
(iv)前記成分を含む前記媒体を、前記ポリマー材料の複数の孔の少なくとも一部に浸透させる段階、そして
(v)成分で満たされた複数の孔を含むポリマー材料を、化学的機械的研磨用パッドに形成する段階、
を含む前記化学的機械的研磨用パッドの形成法。 - 多孔質の前記ポリマー材料に圧力差に置いた後に、前記ポリマー材料を前記媒体に接触させる、請求項38に記載の方法。
- 多孔質の前記ポリマー材料に圧力差に置く前に、前記ポリマー材料を前記媒体に接触させる、請求項38に記載の方法。
- 前記圧力差が、大気圧未満の圧力である、請求項38に記載の方法。
- 前記圧力差が、大気圧超の圧力である、請求項38に記載の方法。
- 圧力差により、前記成分を含む前記媒体を、前記複数の孔内に配置させる、請求項38に記載の方法。
- 前記成分で満たされた複数の孔を含む前記ポリマー材料を加圧し、ポリマーシートを形成させる、請求項38に記載の方法。
- 前記成分が液体である、請求項38に記載の方法。
- 前記液体が、溶媒と溶質とを含む溶液である、請求項38に記載の方法。
- 前記成分が固体である、請求項38に記載の方法。
- 前記固体が、1μm以下の最大直径を有する粒子から本質的に成る、請求項47に記載の方法。
- 前記固体が導電性である、請求項47に記載の方法。
- 前記固体が、研磨粒子から本質的に成る、請求項47に記載の方法。
- 前記研磨粒子が、アルミナ、シリカ、チタニア、セリア、ジルコニア、ゲルマニア、マグネシア、それらの共形成生成物、及びそれらの組み合わせから成る群から選択される金属酸化物を含む、請求項50に記載の方法。
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US10/807,064 US7195544B2 (en) | 2004-03-23 | 2004-03-23 | CMP porous pad with component-filled pores |
PCT/US2005/008527 WO2005100497A1 (en) | 2004-03-23 | 2005-03-14 | Cmp porous pad with component-filled pores |
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CN (1) | CN1934208B (ja) |
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Also Published As
Publication number | Publication date |
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KR20120087991A (ko) | 2012-08-07 |
IL176955A0 (en) | 2006-12-10 |
EP1751243B1 (en) | 2014-04-16 |
MY139413A (en) | 2009-09-30 |
TWI280266B (en) | 2007-05-01 |
IL215969A0 (en) | 2011-12-29 |
TW200609315A (en) | 2006-03-16 |
MY146815A (en) | 2012-09-28 |
EP1751243A1 (en) | 2007-02-14 |
US20050215177A1 (en) | 2005-09-29 |
WO2005100497A1 (en) | 2005-10-27 |
US7195544B2 (en) | 2007-03-27 |
KR101178335B1 (ko) | 2012-08-29 |
US20070180778A1 (en) | 2007-08-09 |
CN1934208B (zh) | 2011-08-10 |
CN1934208A (zh) | 2007-03-21 |
IL176955A (en) | 2012-10-31 |
US7699684B2 (en) | 2010-04-20 |
KR20060127221A (ko) | 2006-12-11 |
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