JP6378890B2 - 基板処理方法 - Google Patents
基板処理方法 Download PDFInfo
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- JP6378890B2 JP6378890B2 JP2014024551A JP2014024551A JP6378890B2 JP 6378890 B2 JP6378890 B2 JP 6378890B2 JP 2014024551 A JP2014024551 A JP 2014024551A JP 2014024551 A JP2014024551 A JP 2014024551A JP 6378890 B2 JP6378890 B2 JP 6378890B2
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- 238000003672 processing method Methods 0.000 title claims description 19
- 238000005498 polishing Methods 0.000 claims description 149
- 238000004140 cleaning Methods 0.000 claims description 113
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 79
- 239000007788 liquid Substances 0.000 claims description 63
- 229910021642 ultra pure water Inorganic materials 0.000 claims description 21
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- 238000012545 processing Methods 0.000 claims description 11
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- 230000007246 mechanism Effects 0.000 description 25
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- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 11
- 239000002184 metal Substances 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 11
- 230000032258 transport Effects 0.000 description 11
- 238000002474 experimental method Methods 0.000 description 7
- 229920000915 polyvinyl chloride Polymers 0.000 description 6
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- 239000000126 substance Substances 0.000 description 6
- 239000010949 copper Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
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- 229910052710 silicon Inorganic materials 0.000 description 1
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- 238000005507 spraying Methods 0.000 description 1
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- 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
- H01L21/02041—Cleaning
- H01L21/02057—Cleaning during device manufacture
- H01L21/0206—Cleaning during device manufacture during, before or after processing of insulating layers
- H01L21/02065—Cleaning during device manufacture during, before or after processing of insulating layers the processing being a planarization of insulating layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
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- B24B37/00—Lapping machines or devices; Accessories
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- B—PERFORMING OPERATIONS; TRANSPORTING
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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
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/12—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving optical means
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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
- H01L21/02041—Cleaning
- H01L21/02057—Cleaning during device manufacture
- H01L21/02068—Cleaning during device manufacture during, before or after processing of conductive layers, e.g. polysilicon or amorphous silicon layers
- H01L21/02074—Cleaning during device manufacture during, before or after processing of conductive layers, e.g. polysilicon or amorphous silicon layers the processing being a planarization of conductive layers
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
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- H01L21/67011—Apparatus for manufacture or treatment
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- H—ELECTRICITY
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- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67098—Apparatus for thermal treatment
- H01L21/67115—Apparatus for thermal treatment mainly by radiation
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
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- B08B3/024—Cleaning by means of spray elements moving over the surface to be cleaned
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0035—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0035—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like
- B08B7/005—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like by infrared radiation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0035—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like
- B08B7/0057—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like by ultraviolet radiation
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- 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
- H01L21/02041—Cleaning
- H01L21/02057—Cleaning during device manufacture
- H01L21/0206—Cleaning during device manufacture during, before or after processing of insulating layers
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- Computer Hardware Design (AREA)
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- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Cleaning Or Drying Semiconductors (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
- Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
Description
さらに他の態様は、研磨パッド上に研磨液を供給しながら、基板を該研磨パッドの研磨面に押し付けて、該基板を研磨し、研磨後の前記基板をその中心軸線まわりに回転させ、前記基板の表面への軟X線の照射を開始し、前記軟X線の照射開始と同時またはその後、前記基板の表面への純水の供給を開始し、前記基板の表面への純水の供給を停止し、前記基板の表面への純水の供給を停止した後、前記基板の表面上に純水の膜が存在しないことが液膜センサによって検出されたときに、前記基板の表面への軟X線の照射を停止することを特徴とする基板処理方法である。
好ましい態様は、前記基板の表面への純水の供給を停止した時点から所定の時間が経過したときに、前記基板の表面への軟X線の照射を停止することを特徴とする。
好ましい態様は、前記純水は、比抵抗値が15MΩ・cm以上の超純水であることを特徴とする。
好ましい態様は、前記基板の表面に純水を供給する前に、前記基板の表面に洗浄液を供給して前記基板を洗浄することを特徴とする。
好ましい態様は、前記基板の表面に軟X線を照射する工程では、前記基板の中心に関して対称となる位置から、軟X線を前記基板の表面に照射することを特徴とする。
好ましい態様は、前記基板の表面に軟X線を照射する工程では、前記基板の中心に関して対称となる位置から、軟X線を前記基板の表面に照射することを特徴とする。
図3は、研磨ユニット、洗浄ユニット、および乾燥ユニットを備えた研磨装置を示す図である。この研磨装置は、ウェーハ(基板)を研磨し、洗浄し、乾燥させる一連の工程を行うことができる基板処理装置である。図3に示すように、研磨装置は、略矩形状のハウジング2を備えており、ハウジング2の内部は隔壁2a,2bによってロード/アンロード部6と研磨部1と洗浄部8とに区画されている。研磨装置は、ウェーハ処理動作を制御する動作制御部10を有している。
2 ハウジング
6 ロード/アンロード部
8 洗浄部
10 動作制御部
12 フロントロード部
14 走行機構
16 搬送ロボット
20 研磨パッド
22A〜22D 研磨テーブル
24A〜24D トップリング
26A〜26D 研磨液供給ノズル
28A〜28D ドレッシングユニット
30A〜30D アトマイザ
31 トップリングアーム
40 第1リニアトランスポータ
42 第2リニアトランスポータ
44 リフタ
46 スイングトランスポータ
48 仮置き台
50 第1の搬送ロボット
52 一次洗浄ユニット
54 二次洗浄ユニット
56 乾燥ユニット
58 第2の搬送ロボット
65 軟X線照射器
70 第1洗浄ユニット
71〜74 保持ローラ
77,78 ロールスポンジ
80,81 回転機構
82 昇降駆動機構
85,86 純水供給ノズル
87,88 洗浄液供給ノズル
89 ガイドレール
90 液膜センサ
91 基板保持部
92 ペンスポンジ
94 アーム
95 チャック
96 純水供給ノズル
97 洗浄液供給ノズル
98 モータ
100 旋回軸
101 モータ
Claims (10)
- 研磨部の研磨ユニットにおいて、研磨パッド上に研磨液を供給しながら、基板を該研磨パッドの研磨面に押し付けて、該基板を研磨し、
研磨後の前記基板を前記研磨部に隣接する洗浄部に搬送し、
前記洗浄部の洗浄ユニットにおいて、研磨後の前記基板をその中心軸線まわりに回転させ、
前記基板の表面への軟X線の照射を開始し、
前記軟X線の照射開始と同時またはその後、前記基板の表面への純水の供給を開始し、
前記基板の表面への純水の供給を停止し、
その後、前記基板の表面への軟X線の照射を停止し、
前記基板を前記研磨ユニットおよび前記洗浄ユニットで処理する工程は、前記研磨部と前記洗浄部とを隔壁によって区画するハウジング内で行われることを特徴とする基板処理方法。 - 研磨パッド上に研磨液を供給しながら、基板を該研磨パッドの研磨面に押し付けて、該基板を研磨し、
研磨後の前記基板をその中心軸線まわりに回転させ、
前記基板の表面への軟X線の照射を開始し、
前記軟X線の照射開始と同時またはその後、前記基板の表面への純水の供給を開始し、
前記基板の表面への純水の供給を停止し、
その後、前記基板の表面への軟X線の照射を停止し、
前記基板の表面に軟X線を照射する工程では、前記基板の回転方向において前記純水が供給される領域の下流側から、軟X線を前記基板の表面に照射することを特徴とする基板処理方法。 - 研磨パッド上に研磨液を供給しながら、基板を該研磨パッドの研磨面に押し付けて、該基板を研磨し、
研磨後の前記基板をその中心軸線まわりに回転させ、
前記基板の表面への軟X線の照射を開始し、
前記軟X線の照射開始と同時またはその後、前記基板の表面への純水の供給を開始し、
前記基板の表面への純水の供給を停止し、
前記基板の表面への純水の供給を停止した後、前記基板の表面上に純水の膜が存在しないことが液膜センサによって検出されたときに、前記基板の表面への軟X線の照射を停止することを特徴とする基板処理方法。 - 前記基板の表面への純水の供給を停止した時点から所定の時間が経過したときに、前記基板の表面への軟X線の照射を停止することを特徴とする請求項1または2に記載の基板処理方法。
- 前記基板の表面には、少なくとも絶縁膜を含む構造体が形成されていることを特徴とする請求項1乃至4のいずれか一項に記載の基板処理方法。
- 前記純水は、比抵抗値が15MΩ・cm以上の超純水であることを特徴とする請求項1乃至5のいずれか一項に記載の基板処理方法。
- 前記基板の表面に純水を供給する前に、前記基板の表面に洗浄液を供給して前記基板を洗浄することを特徴とする請求項1乃至6のいずれか一項に記載の基板処理方法。
- 前記基板の表面に軟X線を照射する工程では、前記基板の中心に関して対称となる位置から、軟X線を前記基板の表面に照射することを特徴とする請求項1乃至7のいずれか一項に記載の基板処理方法。
- 研磨部の研磨ユニットにおいて、研磨パッド上に研磨液を供給しながら、基板を該研磨パッドの研磨面に押し付けて、該基板を研磨し、
研磨後の前記基板を前記研磨部に隣接する洗浄部に搬送し、
前記洗浄部の洗浄ユニットにおいて、研磨後の前記基板をその中心軸線まわりに回転させ、
前記基板の表面に軟X線を照射しながら、前記基板の表面に純水を供給し、
前記基板の表面への純水の供給を停止し、
前記基板の表面への軟X線の照射を停止し、
前記基板を前記研磨ユニットおよび前記洗浄ユニットで処理する工程は、前記研磨部と前記洗浄部とを隔壁によって区画するハウジング内で行われることを特徴とする基板処理方法。 - 前記基板の表面に軟X線を照射する工程では、前記基板の中心に関して対称となる位置から、軟X線を前記基板の表面に照射することを特徴とする請求項9に記載の基板処理方法。
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