JP2013052459A - 研磨パッド - Google Patents
研磨パッド Download PDFInfo
- Publication number
- JP2013052459A JP2013052459A JP2011190859A JP2011190859A JP2013052459A JP 2013052459 A JP2013052459 A JP 2013052459A JP 2011190859 A JP2011190859 A JP 2011190859A JP 2011190859 A JP2011190859 A JP 2011190859A JP 2013052459 A JP2013052459 A JP 2013052459A
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- Prior art keywords
- polishing
- region
- light transmission
- polishing pad
- transmission region
- Prior art date
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/11—Lapping tools
- B24B37/20—Lapping pads for working plane surfaces
- B24B37/205—Lapping pads for working plane surfaces provided with a window for inspecting the surface of the work being lapped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/11—Lapping tools
- B24B37/20—Lapping pads for working plane surfaces
- B24B37/22—Lapping pads for working plane surfaces characterised by a multi-layered structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- 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
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/304—Mechanical treatment, e.g. grinding, polishing, cutting
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Abstract
【解決手段】 本発明の研磨パッドは、研磨領域、クッション層、及び支持フィルムがこの順に積層されており、研磨領域及びクッション層を貫く開口部内かつ支持フィルム上に光透過領域が設けられており、前記光透過領域は、研磨定盤側の表面に、周囲部とくぼみ部とを有しており、前記周囲部には支持フィルムが積層されており、前記くぼみ部には支持フィルムが積層されておらず開口していることを特徴とする。
【選択図】 図2
Description
研磨領域及びクッション層を貫く開口部内かつ支持フィルム上に光透過領域が設けられており、前記光透過領域は、研磨定盤側の表面に、周囲部とくぼみ部とを有しており、前記周囲部には支持フィルムが積層されており、前記くぼみ部には支持フィルムが積層されておらず開口していることを特徴とする研磨パッド、に関する。
1)イソシアネート末端プレポリマーの気泡分散液を作製する発泡工程
イソシアネート末端プレポリマー(第1成分)にシリコン系界面活性剤を添加し、非反応性気体の存在下で撹拌し、非反応性気体を微細気泡として分散させて気泡分散液とする。前記プレポリマーが常温で固体の場合には適宜の温度に予熱し、溶融して使用する。
2)硬化剤(鎖延長剤)混合工程
上記の気泡分散液に鎖延長剤(第2成分)を添加、混合、撹拌して発泡反応液とする。
3)注型工程
上記の発泡反応液を金型に流し込む。
4)硬化工程
金型に流し込まれた発泡反応液を加熱し、反応硬化させる。
研磨領域8とクッション層11を貼り合わせ、その後、研磨領域8及びクッション層11を貫く開口部10を形成する。その後、クッション層11の片面に支持フィルム12を貼り合わせる。そして、開口部10内に光透過領域9を嵌め込み、光透過領域9の周囲部13を支持フィルム12に貼り合せる。さらに、光透過領域9のくぼみ部14に対応する部分の支持フィルム12を切除し、くぼみ部14を開口させる。
研磨領域8とクッション層11を貼り合わせ、その後、研磨領域8及びクッション層11を貫く開口部10を形成する。その後、クッション層11の片面に支持フィルム12を貼り合わせる。そして、開口部10内かつ支持フィルム12上に光透過樹脂組成物を注入して加熱、光照射又は湿気等により硬化させることにより光透過領域9を形成する。さらに、光透過領域9のくぼみ部14に対応する部分の支持フィルム12を切除し、くぼみ部14を切削等により形成する。
(平均気泡径測定)
作製したポリウレタン発泡体を厚み1mm以下になるべく薄くミクロトームカッターで平行に切り出したものを平均気泡径測定用試料とした。試料をスライドガラス上に固定し、SEM(S−3500N、日立サイエンスシステムズ(株))を用いて100倍で観察した。得られた画像を画像解析ソフト(WinRoof、三谷商事(株))を用いて、任意範囲の全気泡径を測定し、平均気泡径を算出した。
JIS Z8807−1976に準拠して行った。作製したポリウレタン発泡体を4cm×8.5cmの短冊状(厚み:任意)に切り出したものを比重測定用試料とし、温度23℃±2℃、湿度50%±5%の環境で16時間静置した。測定には比重計(ザルトリウス社製)を用い、比重を測定した。
JIS K6253−1997に準拠して行った。作製したポリウレタン発泡体又は光透過領域を2cm×2cm(厚み:任意)の大きさに切り出したものを硬度測定用試料とし、温度23℃±2℃、湿度50%±5%の環境で16時間静置した。測定時には、試料を重ね合わせ、厚み6mm以上とした。硬度計(高分子計器社製、アスカーD型硬度計)を用い、硬度を測定した。
〔光透過領域の作製〕
熱可塑性ポリウレタンA1098A(東洋紡績社製)を用い、インジェクション成型にてポリウレタンシート(縦59.5mm、横19.5mm、厚み2.0mm、D硬度48度)を作製し、さらにポリウレタンシートを切削加工してくぼみ部(縦54mm、横14mm、深さ0.8mm)を形成して光透過領域を作製した。
反応容器内に、ポリエーテル系プレポリマー(ユニロイヤル社製、アジプレンL−325、NCO濃度:2.22meq/g)100重量部、及びシリコン系界面活性剤(東レダウコーニングシリコーン社製、SH−192)3重量部を混合し、温度を80℃に調整した。撹拌翼を用いて、回転数900rpmで反応系内に気泡を取り込むように約4分間激しく撹拌を行った。そこへ予め120℃で溶融した4,4’−メチレンビス(o−クロロアニリン)(イハラケミカル社製、イハラキュアミンMT)26重量部を添加した。その後、約1分間撹拌を続けてパン型のオープンモールドへ反応溶液を流し込んだ。この反応溶液の流動性がなくなった時点でオーブン内に入れ、110℃で6時間ポストキュアを行い、ポリウレタン発泡体ブロックを得た。このポリウレタン発泡体ブロックをバンドソータイプのスライサー(フェッケン社製)を用いてスライスし、ポリウレタン発泡体シート(平均気泡径50μm、比重0.82、D硬度55度)を得た。次にこのシートをバフ機(アミテック社製)を使用して、所定の厚さに表面バフをし、厚み精度を整えたシートとした(シート厚み:2mm)。このバフ処理をしたシートを直径(61cm)に打ち抜き、溝加工機(東邦鋼機社製)を用いて表面に同心円状の溝加工を行った。このシートの溝加工面と反対側の面にラミ機を使用して、両面テープ(積水化学工業社製、ダブルタックテープ)を貼り合わせて両面テープ付き研磨領域を作製した。
表面をバフがけし、コロナ処理したポリエチレンフォーム(東レ社製、トーレペフ、厚さ:0.8mm)からなるクッション層を、作製した両面テープ付き研磨領域の接着面にラミ機を用いて貼り合わせて研磨シートを作製した。次に、研磨シートに60mm×20mmの大きさの開口部を形成した。そして、片面に接着剤層を有する支持シート(ポリエチレンテレフタレート、厚さ:50μm)を研磨シートのクッション層に貼り合わせて積層体を得た。その後、該積層体の開口部内に光透過領域を嵌め込み、光透過領域の裏面側の周囲部を支持シートに貼り合わせた。その後、光透過領域の裏面側のくぼみ部に積層された支持シートを切除し、支持フィルムの端部を折り曲げてくぼみ部の側面に貼り合せて図3記載の構造の研磨パッドを作製した。該研磨パッドは、ダミーウエハ15枚を研磨してもスラリー漏れは発生しなかった。
2:研磨定盤
3:研磨剤(スラリー)
4:被研磨材(半導体ウエハ)
5:支持台(ポリシングヘッド)
6、7:回転軸
8:研磨領域
9:光透過領域
10:開口部
11:クッション層
12:支持シート
13:周囲部
14:くぼみ部
15:被覆部材
Claims (4)
- 研磨領域、クッション層、及び支持フィルムがこの順に積層されている研磨パッドにおいて、
研磨領域及びクッション層を貫く開口部内かつ支持フィルム上に光透過領域が設けられており、前記光透過領域は、研磨定盤側の表面に、周囲部とくぼみ部とを有しており、前記周囲部には支持フィルムが積層されており、前記くぼみ部には支持フィルムが積層されておらず開口していることを特徴とする研磨パッド。 - くぼみ部の側面に被覆部材が設けられている請求項1記載の研磨パッド。
- 被覆部材は、周囲部に積層された支持フィルムの端部を折り曲げることにより形成されている請求項2記載の研磨パッド。
- 請求項1〜3のいずれかに記載の研磨パッドを用いて半導体ウエハの表面を研磨する工程を含む半導体デバイスの製造方法。
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KR1020147007404A KR101633745B1 (ko) | 2011-09-01 | 2012-08-24 | 연마 패드 |
PCT/JP2012/071472 WO2013031692A1 (ja) | 2011-09-01 | 2012-08-24 | 研磨パッド |
US14/241,008 US9156126B2 (en) | 2011-09-01 | 2012-08-24 | Polishing pad |
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KR101945874B1 (ko) * | 2017-08-07 | 2019-02-11 | 에스케이씨 주식회사 | 표면 처리된 연마패드용 윈도우 및 이를 포함하는 연마패드 |
KR102488101B1 (ko) * | 2021-05-04 | 2023-01-12 | 에스케이엔펄스 주식회사 | 연마 패드, 연마 패드의 제조 방법 및 이를 이용한 반도체 소자의 제조 방법 |
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CN103747918A (zh) | 2014-04-23 |
TWI480942B (zh) | 2015-04-11 |
US9156126B2 (en) | 2015-10-13 |
KR101633745B1 (ko) | 2016-06-27 |
KR20140051441A (ko) | 2014-04-30 |
TW201330078A (zh) | 2013-07-16 |
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