JP6042498B2 - 基板の高精度エッチング方法 - Google Patents
基板の高精度エッチング方法 Download PDFInfo
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- JP6042498B2 JP6042498B2 JP2015138626A JP2015138626A JP6042498B2 JP 6042498 B2 JP6042498 B2 JP 6042498B2 JP 2015138626 A JP2015138626 A JP 2015138626A JP 2015138626 A JP2015138626 A JP 2015138626A JP 6042498 B2 JP6042498 B2 JP 6042498B2
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P50/00—Etching of wafers, substrates or parts of devices
- H10P50/20—Dry etching; Plasma etching; Reactive-ion etching
- H10P50/26—Dry etching; Plasma etching; Reactive-ion etching of conductive or resistive materials
- H10P50/264—Dry etching; Plasma etching; Reactive-ion etching of conductive or resistive materials by chemical means
- H10P50/266—Dry etching; Plasma etching; Reactive-ion etching of conductive or resistive materials by chemical means by vapour etching only
- H10P50/267—Dry etching; Plasma etching; Reactive-ion etching of conductive or resistive materials by chemical means by vapour etching only using plasmas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32082—Radio frequency generated discharge
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32082—Radio frequency generated discharge
- H01J37/32137—Radio frequency generated discharge controlling of the discharge by modulation of energy
- H01J37/32146—Amplitude modulation, includes pulsing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32192—Microwave generated discharge
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32431—Constructional details of the reactor
- H01J37/32798—Further details of plasma apparatus not provided for in groups H01J37/3244 - H01J37/32788; special provisions for cleaning or maintenance of the apparatus
- H01J37/32816—Pressure
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P50/00—Etching of wafers, substrates or parts of devices
- H10P50/20—Dry etching; Plasma etching; Reactive-ion etching
- H10P50/24—Dry etching; Plasma etching; Reactive-ion etching of semiconductor materials
- H10P50/242—Dry etching; Plasma etching; Reactive-ion etching of semiconductor materials of Group IV materials
- H10P50/244—Dry etching; Plasma etching; Reactive-ion etching of semiconductor materials of Group IV materials comprising alternated and repeated etching and passivation steps
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P50/00—Etching of wafers, substrates or parts of devices
- H10P50/20—Dry etching; Plasma etching; Reactive-ion etching
- H10P50/28—Dry etching; Plasma etching; Reactive-ion etching of insulating materials
- H10P50/282—Dry etching; Plasma etching; Reactive-ion etching of insulating materials of inorganic materials
- H10P50/283—Dry etching; Plasma etching; Reactive-ion etching of insulating materials of inorganic materials by chemical means
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Description
Claims (14)
- プラズマプロセスチャンバ内において基板ホルダ上で基板を受ける工程;
前記プラズマプロセスチャンバ内において酸素含有プラズマを用いることによって前記基板の第1部分を処理する工程;
前記プラズマプロセスチャンバ内においてフルオロカーボンプラズマを用いることによって前記基板から前記第1部分を選択的に除去する工程;
前記酸素含有プラズマを用いることによって前記基板の第2部分を処理する工程;及び、
前記フルオロカーボンプラズマを用いることによって前記第2部分を選択的に除去する工程、
を有する基板の処理方法。 - 前記フルオロカーボンプラズマがCxFyHz気体を含む、請求項1に記載の方法。
- 前記第1部分又は第2部分を処理する工程が、1000W乃至3000Wの電源電力を0.667Pa乃至133.3Paの第1圧力に維持される前記プラズマプロセスチャンバへ印加する工程を有する、請求項1に記載の方法。
- 前記第1部分又は第2部分を除去する工程が:
1000W乃至3000Wの電源電力と10W乃至200Wのバイアス電力を前記プラズマプロセスチャンバへ印加する工程;及び、
前記プラズマプロセスチャンバ内において0.667Pa乃至133.3Paの第2圧力に前記プラズマプロセスチャンバを維持する工程、
を有する、請求項1に記載の方法。 - 前記酸素含有プラズマと前記フルオロカーボンプラズマとを交互に繰り返す工程をさらに有する、請求項1に記載の方法。
- 前記交互に繰り返す工程が、前記フルオロカーボンプラズマの連続する反復について少なくとも5%だけ、バイアス電力を増大させる工程を有する、請求項5に記載の方法。
- 前記基板がシリコン基板を含み、かつ、
前記シリコン基板は、該シリコン基板の一部を曝露するパターニングされた表面層の下に存在する、
請求項1に記載の方法。 - 前記第1部分又は第2部分を処理する工程が、100ms乃至3000msの期間を有する、請求項1に記載の方法。
- 前記第1部分又は第2部分を除去する工程が、100ms乃至3000msの期間を有する、請求項7に記載の方法。
- 前記第1部分を処理する工程及び除去する工程が5秒を超えない期間を有する、請求項1に記載の方法。
- プラズマプロセスチャンバ内において基板ホルダ上で基板を受ける工程;
酸素、フッ素、及び炭素の元素を含む第1プラズマを用いることによって前記基板の第1部分を処理する工程であって、前記プラズマプロセスチャンバに、電源電力とバイアス電力を印加することを含む、工程;
実質的にフッ素及び炭素の元素で構成される第2プラズマを用いて、前記処理された基板の前記第1部分を選択的に除去する工程であって、前記プラズマプロセスチャンバに電源電力とバイアス電力を印加することを含む、工程;
前記第1プラズマを用いて、前記基板の第2部分を処理する工程であって、前記基板の前記第2部分は、前記基板の前記第1部分の除去により曝露される、工程;並びに、
前記第2プラズマを用いて、前記基板の前記第2部分を選択的に除去する工程、
を有する基板の処理方法。 - 前記第2プラズマが、CF4、C4F6、又はC4F8のうちの1つ以上を含む、請求項11に記載の方法。
- 前記第1部分又は第2部分を処理する工程が、1000W乃至3000Wの電源電力と10W乃至200Wのバイアス電力を0.667Pa乃至133.3Paの第1圧力に維持される前記プラズマプロセスチャンバへ印加する工程を有する、請求項11に記載の方法。
- 前記第1部分又は第2部分を除去する工程が:
1000W乃至3000Wの電源電力と10W乃至200Wのバイアス電力を前記プラズマプロセスチャンバへ印加する工程;及び、
前記プラズマプロセスチャンバ内において0.667Pa乃至133.3Paの第2圧力に前記プラズマプロセスチャンバを維持する工程、
を有する、請求項11に記載の方法。
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201462022873P | 2014-07-10 | 2014-07-10 | |
| US201462022856P | 2014-07-10 | 2014-07-10 | |
| US62/022,856 | 2014-07-10 | ||
| US62/022,873 | 2014-07-10 | ||
| US201462040214P | 2014-08-21 | 2014-08-21 | |
| US62/040,214 | 2014-08-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2016028424A JP2016028424A (ja) | 2016-02-25 |
| JP6042498B2 true JP6042498B2 (ja) | 2016-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2015133443A Expired - Fee Related JP6159757B2 (ja) | 2014-07-10 | 2015-07-02 | 基板の高精度エッチングのプラズマ処理方法 |
| JP2015138626A Active JP6042498B2 (ja) | 2014-07-10 | 2015-07-10 | 基板の高精度エッチング方法 |
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| JP2015133443A Expired - Fee Related JP6159757B2 (ja) | 2014-07-10 | 2015-07-02 | 基板の高精度エッチングのプラズマ処理方法 |
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| US (3) | US9768033B2 (ja) |
| JP (2) | JP6159757B2 (ja) |
| KR (2) | KR101745686B1 (ja) |
| TW (2) | TWI593015B (ja) |
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| TW201611118A (zh) | 2016-03-16 |
| US10211065B2 (en) | 2019-02-19 |
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| JP6159757B2 (ja) | 2017-07-05 |
| JP2016029714A (ja) | 2016-03-03 |
| US20190096694A1 (en) | 2019-03-28 |
| US9768033B2 (en) | 2017-09-19 |
| KR20160007373A (ko) | 2016-01-20 |
| TWI627672B (zh) | 2018-06-21 |
| JP2016028424A (ja) | 2016-02-25 |
| TW201614725A (en) | 2016-04-16 |
| KR20160007441A (ko) | 2016-01-20 |
| KR101745686B1 (ko) | 2017-06-12 |
| US20160013063A1 (en) | 2016-01-14 |
| KR101886349B1 (ko) | 2018-08-08 |
| TWI593015B (zh) | 2017-07-21 |
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