JP5032114B2 - パターン化ウェハまたは非パターン化ウェハおよびその他の検体の検査システム - Google Patents
パターン化ウェハまたは非パターン化ウェハおよびその他の検体の検査システム Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/956—Inspecting patterns on the surface of objects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/4738—Diffuse reflection, e.g. also for testing fluids, fibrous materials
- G01N21/474—Details of optical heads therefor, e.g. using optical fibres
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/9501—Semiconductor wafers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/94—Investigating contamination, e.g. dust
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- Life Sciences & Earth Sciences (AREA)
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- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Testing Or Measuring Of Semiconductors Or The Like (AREA)
- Length Measuring Devices By Optical Means (AREA)
Description
Claims (22)
- 検体を照明するように構成された照明システムと、
前記検体から前方に散乱された光を集光するように構成された前方集光器と、
前記検体から前方と後方に散乱された光を集光するように構成された中央集光器と、
前記検体から後方に散乱された光を集光するように構成された後方集光器と、
前記前方集光器によって集光された前記光の異なる部分を、その光の異なる部分に関する方位と極角情報が保存されるように個別に検出するとともに、前記光の異なる部分を表す信号を生成するように構成されたセグメント化された検出器と、
前記信号から前記検体上の欠陥を検出するように構成されたプロセッサと、
調節可能な開口を備え、
前記照明システムは、方位と極角を変えるように構成され、光は前記調節可能な開口を調節することによってその方位と極角で検出される、検査システム。 - 前記前方集光器の軸は、垂線から60゜の角度から80°で入射平面の中心に配置される請求項1に記載のシステム。
- 前記前方集光器は、前記前方集光器によって集光された前記光のフーリエ濾過に好適なフーリエ平面を設ける請求項1に記載のシステム。
- 前記光の異なる部分を前記検出器に個別に伝えるように構成された複数のファイバーをさらに備える請求項1に記載のシステム。
- 前記検出器は、アレイ検出器を備える請求項1に記載のシステム。
- 前記検出器は、多陽極光増倍管を備える請求項1に記載のシステム。
- 前記前方集光器によって集光された前記光と異なる方位角度で前記検体から前方に散乱された光を集光するように構成された側方集光器と、
その側方集光器によって集光された前記光の異なる部分に関する方位と極角情報が保存されるように、前記側方集光器によって集光された前記光の異なる部分を個別に検出するとともに、前記側方集光器によって集光された前記光の異なる部分を表す信号を生成するように構成された側方セグメント化された検出器とをさらに備える請求項1に記載のシステム。 - 前記照明システムは、さらに、前記検体に対して光ビームを走査することによって前記検体を照明するように構成されている請求項1に記載のシステム。
- 前記照明システムは、さらに、前記検体を並進・回転させながら、前記検体に対して広い走査角度で光ビームを走査することによって前記検体を照明するように構成されている請求項1に記載のシステム。
- 前記照明システムは、さらに、斜めの入射角度で前記検体を照明するように構成されている請求項1に記載のシステム。
- 前記照明システムは、さらに、異なる入射角度または異なる方位角度で前記検体に異なる光のビームを誘導することによって、前記検体を照明するように構成されている請求項1に記載のシステム。
- 前記照明システムは、さらに、前記検体上の1つのスポットに異なる光のビームを誘導することによって前記検体を照明するように構成されている請求項1に記載のシステム。
- 前記照明システムは、さらに、垂線の入射角度で前記検体を照明するように構成されている請求項1に記載のシステム。
- 前記照明システムは、さらに、前記検体を定常光ビームで照明するように構成されている請求項1に記載のシステム。
- 検査中に前記検体を回転・並進させるように構成されたステージをさらに備える請求項1に記載のシステム。
- 検査中に前記検体を2つの水平方向に並進させるように構成されたステージをさらに備える請求項1に記載のシステム。
- 前記検体は、パターン化ウェハを備える請求項1に記載のシステム。
- 前記照明システムは、さらに、前記検体の第1の面を照明するように構成され、前記システムは、前記検体の第2の面上の欠陥を検出するように構成された光学サブシステムをさらに備える請求項1に記載のシステム。
- 前記前方、中央集光器と後方集光器の軸は、入射平面の中心に配置される請求項1に記載のシステム。
- 前記照明システムは、パターン化ウェハからなる前記検体を回転・並進させるように構成されたステージを含み、
前記照明システムは、前記検体を回転させ並進させている間に広い走査パスで前記検体を走査するように構成された請求項1に記載の検査システム。 - 前記広い走査パスは、0.1ラジアンより大きい請求項20に記載のシステム。
- 前記照明システムは、音響光学偏光器を備える請求項20に記載のシステム。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/456,203 | 2003-06-06 | ||
US10/456,203 US7068363B2 (en) | 2003-06-06 | 2003-06-06 | Systems for inspection of patterned or unpatterned wafers and other specimen |
PCT/US2004/017707 WO2004111623A1 (en) | 2003-06-06 | 2004-06-04 | Systems for inspection of patterned or unpatterned wafers and other specimen |
Publications (2)
Publication Number | Publication Date |
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JP2007526444A JP2007526444A (ja) | 2007-09-13 |
JP5032114B2 true JP5032114B2 (ja) | 2012-09-26 |
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JP2006515188A Expired - Fee Related JP5032114B2 (ja) | 2003-06-06 | 2004-06-04 | パターン化ウェハまたは非パターン化ウェハおよびその他の検体の検査システム |
Country Status (6)
Country | Link |
---|---|
US (1) | US7068363B2 (ja) |
EP (1) | EP1636572B1 (ja) |
JP (1) | JP5032114B2 (ja) |
AT (1) | ATE445152T1 (ja) |
DE (1) | DE602004023505D1 (ja) |
WO (1) | WO2004111623A1 (ja) |
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JP2007526444A (ja) | 2007-09-13 |
US7068363B2 (en) | 2006-06-27 |
WO2004111623A1 (en) | 2004-12-23 |
US20040246476A1 (en) | 2004-12-09 |
ATE445152T1 (de) | 2009-10-15 |
EP1636572A1 (en) | 2006-03-22 |
WO2004111623B1 (en) | 2005-03-17 |
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