JP2021093400A - ゲッタリング性評価装置 - Google Patents
ゲッタリング性評価装置 Download PDFInfo
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- JP2021093400A JP2021093400A JP2019221521A JP2019221521A JP2021093400A JP 2021093400 A JP2021093400 A JP 2021093400A JP 2019221521 A JP2019221521 A JP 2019221521A JP 2019221521 A JP2019221521 A JP 2019221521A JP 2021093400 A JP2021093400 A JP 2021093400A
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- 238000005247 gettering Methods 0.000 title claims abstract description 207
- 238000011156 evaluation Methods 0.000 title claims abstract description 118
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- 239000000956 alloy Substances 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 23
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 18
- 229910052802 copper Inorganic materials 0.000 claims description 18
- 239000010949 copper Substances 0.000 claims description 18
- 229910052782 aluminium Inorganic materials 0.000 claims description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 16
- 229910052742 iron Inorganic materials 0.000 claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 13
- 229910052799 carbon Inorganic materials 0.000 claims description 13
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- 239000010936 titanium Substances 0.000 claims description 8
- 239000004020 conductor Substances 0.000 claims description 6
- 230000001678 irradiating effect Effects 0.000 abstract description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 19
- 239000000919 ceramic Substances 0.000 description 19
- 238000005498 polishing Methods 0.000 description 18
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- 238000002834 transmittance Methods 0.000 description 16
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- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 15
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- B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
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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
- H01L21/04—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
- H01L21/322—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to modify their internal properties, e.g. to produce internal imperfections
- H01L21/3221—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to modify their internal properties, e.g. to produce internal imperfections of silicon bodies, e.g. for gettering
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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
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- H01L21/68714—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 for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support
- H01L21/68757—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 for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support characterised by a coating or a hardness or a material
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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
- H01L21/67—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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- H01L21/687—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 for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches
- H01L21/68714—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 for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/282—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere
- G01R31/2831—Testing of materials or semi-finished products, e.g. semiconductor wafers or substrates
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Abstract
Description
本発明の実施形態1に係るゲッタリング性評価装置1を図面に基づいて説明する。図1は、実施形態1に係るゲッタリング性評価装置1の評価対象のウエーハ100を示す斜視図である。図2は、実施形態1に係るゲッタリング性評価装置1の構成例の斜視図である。図3は、図2のIII−III断面図である。図4は、図2のゲッタリング性評価装置1のベース部材22の斜視図である。
本発明の実施形態1の変形例1に係るゲッタリング性評価装置1−2を図面に基づいて説明する。図5は、実施形態1の変形例1に係るゲッタリング性評価装置1−2の断面図である。図5は、実施形態1と同一部分に同一符号を付して説明を省略する。
本発明の実施形態2に係るゲッタリング性評価装置1−3を図面に基づいて説明する。図6は、実施形態2に係るゲッタリング性評価装置1−3の構成例の斜視図である。図7は、図6のゲッタリング性評価装置1−3の支持部材53の斜視図である。図8は、図6のゲッタリング性評価装置1−3のベース部材52の斜視図である。図6から図8は、実施形態1と同一部分に同一符号を付して説明を省略する。
本発明の実施形態2の変形例2に係るゲッタリング性評価装置1−4を図面に基づいて説明する。図9は、実施形態2の変形例2に係るゲッタリング性評価装置1−4の断面図である。図9は、実施形態2と同一部分に同一符号を付して説明を省略する。
本発明の実施形態3に係るゲッタリング性評価装置1−5を図面に基づいて説明する。図10は、実施形態3に係るゲッタリング性評価装置1−5の構成例の断面図である。図10は、実施形態2と同一部分に同一符号を付して説明を省略する。
本発明の実施形態4に係る研削研磨装置200を図面に基づいて説明する。図11は、実施形態4に係る研削研磨装置200の構成例の斜視図である。図11は、上記実施形態と同一部分に同一符号を付して説明を省略する。
次に、本発明の発明者らは、実施形態1に係るゲッタリング性評価装置1の効果を確認した。確認においては、ポーラスSiCを含む非金属ポーラス部材21を有するチャックテーブル20を使用する実施例と、非金属ポーラス部材21に代えてアルミナセラミックスを含む従来のポーラス部材を有し、その他の構成は実施形態1に係るゲッタリング性評価装置1と同様である従来のチャックテーブルを使用する比較例とのそれぞれにおいて、所定の位置120をウエーハ100上の所定の経路に沿って移動させた際に、送受信ユニット12が受信するマイクロ波の反射波18の強度の変化を検出した。図12は、実施例及び比較例に係るゲッタリング性評価装置が受信したマイクロ波の反射波の強度分布を示すグラフである。
10 ゲッタリング判定手段
11 レーザービーム照射ユニット
12 送受信ユニット
20,20−2,50,50−2,50−3 チャックテーブル
21 非金属ポーラス部材
22,22−2 ベース部材
24,56 保持面
28,28−2,65,65−2 負圧伝達路
51 ポーラス部材
52,52−2 ベース部材
53,53−2 支持部材
54 反射板
66,66−2 伝達路
74 電波吸収体
100 ウエーハ
110 ゲッタリング層
Claims (7)
- ウエーハにレーザービームを照射するレーザービーム照射ユニットと、ウエーハにマイクロ波を照射し、ウエーハで反射したマイクロ波を受信する送受信ユニットと、を含み、ウエーハを研削して生成した研削歪を含むゲッタリング層がゲッタリング性を有するか否かを判定するゲッタリング判定手段と、
該ウエーハを保持面で保持するチャックテーブルと、
を備えたゲッタリング性評価装置であって、
該チャックテーブルは、
該保持面を構成し、該マイクロ波を反射または吸収する性質を有する導電性の非金属ポーラス部材と、
該保持面を露出させて該非金属ポーラス部材を囲繞するとともに該非金属ポーラス部材に負圧を伝達する負圧伝達路を備えたベース部材と、
を有することを特徴とする、ゲッタリング性評価装置。 - 該非金属ポーラス部材は、該マイクロ波の反射率と該マイクロ波の吸収率との総和が80%以上の材料で構成されていることを特徴とする、請求項1に記載のゲッタリング性評価装置。
- 該非金属ポーラス部材は、ポーラスSiCまたはポーラスカーボンを含むことを特徴とする、請求項1または請求項2に記載のゲッタリング性評価装置。
- ウエーハにレーザービームを照射するレーザービーム照射ユニットと、ウエーハにマイクロ波を照射し、ウエーハで反射したマイクロ波を受信する送受信ユニットと、を有し、ウエーハを研削して生成した研削歪を含むゲッタリング層がゲッタリング性を有するか否かを判定するゲッタリング判定手段と、
該ウエーハを保持面で保持するチャックテーブルと、
を備えたゲッタリング性評価装置であって、
該チャックテーブルは、
該保持面を構成する該マイクロ波に対して透過性を有するポーラス部材と、
該ポーラス部材に負圧を伝達する負圧伝達路を備えたベース部材と、
該ポーラス部材より下側に配設されて該ポーラス部材を支持するとともに該負圧伝達路からの負圧を該ポーラス部材へと伝達する伝達路を有し、該マイクロ波に対して透過性を有する材料からなる支持部材と、
該支持部材より下側に配設され、該マイクロ波を反射する導電材料からなる平坦な表面を有する反射板と、
を含むことを特徴とする、ゲッタリング性評価装置。 - 該反射板は、ステンレス、鉄および鉄を含む合金、アルミニウムおよびアルミニウムを含む合金、銅および銅を含む合金、チタン、CFRP、のいずれかを含むことを特徴とする、請求項4に記載のゲッタリング性評価装置。
- ウエーハにレーザービームを照射するレーザービーム照射ユニットと、ウエーハにマイクロ波を照射し、ウエーハで反射したマイクロ波を受信する送受信ユニットと、を有し、ウエーハを研削して生成した研削歪を含むゲッタリング層がゲッタリング性を有するか否かを判定するゲッタリング判定手段と、
該ウエーハを保持面で保持するチャックテーブルと、
を備えたゲッタリング性評価装置であって、
該チャックテーブルは、
該保持面を構成する該マイクロ波に対して透過性を有するポーラス部材と、
該ポーラス部材に負圧を伝達する負圧伝達路を備えたベース部材と、
該ポーラス部材より下側に配設されて該ポーラス部材を支持するとともに該負圧伝達路からの負圧を該ポーラス部材へと伝達する伝達路を有し、該マイクロ波に対して透過性を有する材料からなる支持部材と、
該支持部材より下側に配設され、該マイクロ波を吸収する材料からなる電波吸収体と、
を含むことを特徴とする、ゲッタリング性評価装置。 - 該電波吸収体は、磁性電波吸収体、誘電性電波吸収体、導電性電波吸収体、λ/4型電波吸収体のいずれかを含むことを特徴とする、請求項6に記載のゲッタリング性評価装置。
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