JP6578145B2 - エッチング方法 - Google Patents
エッチング方法 Download PDFInfo
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- JP6578145B2 JP6578145B2 JP2015135905A JP2015135905A JP6578145B2 JP 6578145 B2 JP6578145 B2 JP 6578145B2 JP 2015135905 A JP2015135905 A JP 2015135905A JP 2015135905 A JP2015135905 A JP 2015135905A JP 6578145 B2 JP6578145 B2 JP 6578145B2
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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
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- 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
- H10P50/73—Etching of wafers, substrates or parts of devices using masks for insulating materials
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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
- H01J37/32155—Frequency modulation
- H01J37/32165—Plural frequencies
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- H01J37/32—Gas-filled discharge tubes
- H01J37/32431—Constructional details of the reactor
- H01J37/32697—Electrostatic control
- H01J37/32706—Polarising the substrate
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- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/46—Generating plasma using applied electromagnetic fields, e.g. high frequency or microwave energy
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- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/60—Formation of materials, e.g. in the shape of layers or pillars of insulating materials
- H10P14/65—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by treatments performed before or after the formation of the materials
- H10P14/6502—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by treatments performed before or after the formation of the materials of treatments performed before formation of the materials
- H10P14/6512—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by treatments performed before or after the formation of the materials of treatments performed before formation of the materials by exposure to a gas or vapour
- H10P14/6514—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by treatments performed before or after the formation of the materials of treatments performed before formation of the materials by exposure to a gas or vapour by exposure to a plasma
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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
- 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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- 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
- H10P50/285—Dry etching; Plasma etching; Reactive-ion etching of insulating materials of inorganic materials by chemical means of materials not containing Si, e.g. PZT or Al2O3
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W20/00—Interconnections in chips, wafers or substrates
- H10W20/01—Manufacture or treatment
- H10W20/031—Manufacture or treatment of conductive parts of the interconnections
- H10W20/069—Manufacture or treatment of conductive parts of the interconnections by forming self-aligned vias or self-aligned contact plugs
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W20/00—Interconnections in chips, wafers or substrates
- H10W20/01—Manufacture or treatment
- H10W20/071—Manufacture or treatment of dielectric parts thereof
- H10W20/081—Manufacture or treatment of dielectric parts thereof by forming openings in the dielectric parts
- H10W20/084—Manufacture or treatment of dielectric parts thereof by forming openings in the dielectric parts for dual-damascene structures
- H10W20/088—Manufacture or treatment of dielectric parts thereof by forming openings in the dielectric parts for dual-damascene structures involving partial etching of via holes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/32—Processing objects by plasma generation
- H01J2237/33—Processing objects by plasma generation characterised by the type of processing
- H01J2237/334—Etching
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W20/00—Interconnections in chips, wafers or substrates
- H10W20/01—Manufacture or treatment
- H10W20/071—Manufacture or treatment of dielectric parts thereof
- H10W20/074—Manufacture or treatment of dielectric parts thereof of dielectric parts comprising thin functional dielectric layers, e.g. dielectric etch-stop, barrier, capping or liner layers
- H10W20/076—Manufacture or treatment of dielectric parts thereof of dielectric parts comprising thin functional dielectric layers, e.g. dielectric etch-stop, barrier, capping or liner layers in via holes or trenches
- H10W20/0765—Manufacture or treatment of dielectric parts thereof of dielectric parts comprising thin functional dielectric layers, e.g. dielectric etch-stop, barrier, capping or liner layers in via holes or trenches the thin functional dielectric layers being temporary, e.g. sacrificial layers
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Electromagnetism (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Drying Of Semiconductors (AREA)
Description
・処理容器内圧力:10mTorr(1.33Pa)〜100mTorr(13.3Pa)
・処理ガス
C4F6ガス:0.2sccm〜4sccm
Arガス:500sccm〜1500sccm
O2ガス:0.2sccm〜5sccm
・プラズマ生成用の高周波の電力:30W〜500W
・高周波バイアスの電力:0W〜100W
・電源70の負の直流電圧:0V〜−600V
・処理容器内圧力:10mTorr(1.33Pa)〜50mTorr(6.65Pa)
・処理ガス
C4F8ガス:10sccm〜30sccm
CF4ガス:50sccm〜150sccm
Arガス:500sccm〜1000sccm
O2ガス:10sccm〜30sccm
・プラズマ生成用の高周波の電力:500W〜2000W
・高周波バイアスの電力:500W〜2000W
・処理容器内圧力:10mTorr(1.33Pa)〜50mTorr(6.65Pa)
・処理ガス
C4F6ガス:2sccm〜10sccm
Arガス:500sccm〜1500sccm
・プラズマ生成用の高周波の電力:100W〜500W
・高周波バイアスの電力:0W
・処理容器内圧力:10mTorr(1.33Pa)〜50mTorr(6.65Pa)
・処理ガス
O2ガス:2sccm〜20sccm
Arガス:500sccm〜1500sccm
・プラズマ生成用の高周波の電力:100W〜500W
・高周波バイアスの電力:0W
・処理容器内圧力:10mTorr(1.33Pa)〜50mTorr(6.65Pa)
・処理ガス
Arガス:500sccm〜1500sccm
・プラズマ生成用の高周波の電力:100W〜500W
・高周波バイアスの電力:20W〜300W
<実験例1の処理条件>
処理容器内圧力:30mTorr(4Pa)
C4F6ガスの流量:4sccm
Arガスの流量:1000sccm
O2ガスの流量:5sccm
C4F6ガスの流量に対するArガスの流量:250倍
第1の高周波電源62の高周波:40MHz、500W
第2の高周波電源64の高周波バイアス:13MHz、50W
下部電極LEの自己バイアス電位:350V
電源70の負の直流電圧:−300V
処理時間:10分
<実験例2の処理条件>
処理容器内圧力:30mTorr(4Pa)
C4F6ガスの流量:0.8sccm
Arガスの流量:1000sccm
O2ガスの流量:0.8sccm
C4F6ガスの流量に対するArガスの流量:1250倍
第1の高周波電源62の高周波:40MHz、300W
第2の高周波電源64の高周波バイアス:13MHz、0W
下部電極LEの自己バイアス電位:150V
電源70の負の直流電圧:−300V
処理時間:10分
<実験例3の処理条件>
処理容器内圧力:30mTorr(4Pa)
C4F6ガスの流量:0.2sccm
Arガスの流量:1000sccm
O2ガスの流量:0.2sccm
C4F6ガスの流量に対するArガスの流量:5000倍
第1の高周波電源62の高周波:40MHz、120W
第2の高周波電源64の高周波バイアス:13MHz、0W
下部電極LEの自己バイアス電位:50V
電源70の負の直流電圧:−300V
処理時間:10分
<比較実験例1の処理条件>
処理容器内圧力:30mTorr(4Pa)
C4F6ガスの流量:8sccm
Arガスの流量:1000sccm
O2ガスの流量:10sccm
C4F6ガスの流量に対するArガスの流量:125倍
第1の高周波電源62の高周波:40MHz、500W
第2の高周波電源64の高周波バイアス:13MHz、100W
下部電極LEの自己バイアス電位:500V
電源70の負の直流電圧:−300V
処理時間:10分
<比較実験例2の処理条件>
処理容器内圧力:30mTorr(4Pa)
C4F6ガスの流量:7.6sccm
Arガスの流量:1000sccm
O2ガスの流量:10sccm
C4F6ガスの流量に対するArガスの流量:131倍
第1の高周波電源62の高周波:40MHz、300W
第2の高周波電源64の高周波バイアス:13MHz、0W
下部電極LEの自己バイアス電位:150V
電源70の負の直流電圧:−300V
処理時間:10分
Claims (6)
- 酸化シリコンから構成された第1領域を窒化シリコンから構成された第2領域に対して選択的にエッチングする方法であって、
前記第1領域及び前記第2領域を有する被処理体をプラズマ処理装置の処理容器内に準備する工程と、
前記処理容器内において、フルオロカーボンガス及び希ガスを含む処理ガスのプラズマを生成する工程と、
を含み、
処理ガスのプラズマを生成する前記工程において、前記被処理体がその上に載置される下部電極の自己バイアス電位が4V以上、350V以下であり、
前記処理ガス中の前記フルオロカーボンガスの流量に対して前記処理ガス中の前記希ガスの流量は、250倍以上、5000倍以下である、
方法。 - 処理ガスのプラズマを生成する前記工程では、前記処理ガスを前記処理容器内に供給するために、第1のガスソースからフルオロカーボンガス及び希ガスを含む第1のガスが前記処理容器内に供給され、且つ、第2のガスソースから希ガスのみ又は前記第1のガスとは異なる体積比でフルオロカーボンガス及び希ガスを含む第2のガスが前記処理容器内に供給される、
請求項1に記載の方法。 - 処理ガスのプラズマを生成する前記工程では、前記処理ガスを前記処理容器内に供給するために、単一のガスソースからフルオロカーボンガス及び希ガスを含む混合ガスが前記処理容器内に供給される、請求項1に記載の方法。
- 前記希ガスは、アルゴンガスである、請求項1〜3の何れか一項に記載の方法。
- 前記処理ガスは、酸素ガスを更に含む請求項1〜4の何れか一項に記載の方法。
- 前記第2領域は凹部を形成しており、前記第1領域は、前記凹部を埋め、且つ前記第2領域を覆うように設けられており、
前記第2領域が露出するときを含む期間において、前記第1領域をエッチングするために一回以上のシーケンスを実行する工程を更に含み、
前記一回以上のシーケンスは、
前記処理容器内においてフルオロカーボンガスを含む処理ガスのプラズマを生成する工程であり、前記第1領域及び前記第2領域上にフルオロカーボンを含む堆積物を形成する、該工程と、
前記処理容器内において不活性ガスのプラズマを生成する工程と、
を含む、
請求項1〜5の何れか一項に記載の方法。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015135905A JP6578145B2 (ja) | 2015-07-07 | 2015-07-07 | エッチング方法 |
| US15/202,356 US10541147B2 (en) | 2015-07-07 | 2016-07-05 | Etching method |
| TW105121162A TWI694531B (zh) | 2015-07-07 | 2016-07-05 | 蝕刻方法 |
| KR1020160085395A KR102589406B1 (ko) | 2015-07-07 | 2016-07-06 | 에칭 방법 |
| US16/707,662 US20200111679A1 (en) | 2015-07-07 | 2019-12-09 | Etching method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015135905A JP6578145B2 (ja) | 2015-07-07 | 2015-07-07 | エッチング方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2017022154A JP2017022154A (ja) | 2017-01-26 |
| JP6578145B2 true JP6578145B2 (ja) | 2019-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2015135905A Active JP6578145B2 (ja) | 2015-07-07 | 2015-07-07 | エッチング方法 |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US10541147B2 (ja) |
| JP (1) | JP6578145B2 (ja) |
| KR (1) | KR102589406B1 (ja) |
| TW (1) | TWI694531B (ja) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016157793A (ja) * | 2015-02-24 | 2016-09-01 | 東京エレクトロン株式会社 | エッチング方法 |
| JP6861535B2 (ja) * | 2017-02-28 | 2021-04-21 | 東京エレクトロン株式会社 | 処理方法及びプラズマ処理装置 |
| US11613068B2 (en) | 2017-09-13 | 2023-03-28 | Lg Chem, Ltd. | Preparation method of patterned substrate |
| KR102487054B1 (ko) * | 2017-11-28 | 2023-01-13 | 삼성전자주식회사 | 식각 방법 및 반도체 장치의 제조 방법 |
| JP7022651B2 (ja) | 2018-05-28 | 2022-02-18 | 東京エレクトロン株式会社 | 膜をエッチングする方法及びプラズマ処理装置 |
| JP7433095B2 (ja) * | 2020-03-18 | 2024-02-19 | 東京エレクトロン株式会社 | 基板処理方法及び基板処理装置 |
| US20220310626A1 (en) * | 2021-03-29 | 2022-09-29 | Changxin Memory Technologies, Inc. | Method for fabricating semiconductor device |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6260452A (ja) * | 1985-09-11 | 1987-03-17 | Canon Inc | プ−リ−付電動機 |
| JP3563214B2 (ja) * | 1996-09-04 | 2004-09-08 | 独立行政法人 科学技術振興機構 | プラズマエッチング方法 |
| TW516076B (en) * | 2000-06-13 | 2003-01-01 | Applied Materials Inc | Method and apparatus for increasing the utilization efficiency of gases during semiconductor processing |
| JP2002025979A (ja) * | 2000-07-03 | 2002-01-25 | Hitachi Ltd | 半導体集積回路装置の製造方法 |
| JP4153708B2 (ja) * | 2002-03-12 | 2008-09-24 | 東京エレクトロン株式会社 | エッチング方法 |
| US7232762B2 (en) * | 2004-06-16 | 2007-06-19 | Taiwan Semiconductor Manufacturing Co., Ltd. | Method for forming an improved low power SRAM contact |
| US20070286965A1 (en) * | 2006-06-08 | 2007-12-13 | Martin Jay Seamons | Methods for the reduction and elimination of particulate contamination with cvd of amorphous carbon |
| US7829463B2 (en) * | 2006-03-30 | 2010-11-09 | Tokyo Electron Limited | Plasma processing method and plasma processing apparatus |
| JP2009105279A (ja) * | 2007-10-24 | 2009-05-14 | Fujitsu Microelectronics Ltd | 半導体装置の製造方法及び半導体装置 |
| JP2010098101A (ja) * | 2008-10-16 | 2010-04-30 | Nec Electronics Corp | 半導体装置の製造方法 |
| US20130119018A1 (en) * | 2011-11-15 | 2013-05-16 | Keren Jacobs Kanarik | Hybrid pulsing plasma processing systems |
| JP6034655B2 (ja) * | 2012-10-25 | 2016-11-30 | 東京エレクトロン株式会社 | プラズマ処理装置 |
| US9390923B2 (en) * | 2014-07-03 | 2016-07-12 | Applied Materials, Inc. | Methods of removing residual polymers formed during a boron-doped amorphous carbon layer etch process |
-
2015
- 2015-07-07 JP JP2015135905A patent/JP6578145B2/ja active Active
-
2016
- 2016-07-05 US US15/202,356 patent/US10541147B2/en active Active
- 2016-07-05 TW TW105121162A patent/TWI694531B/zh active
- 2016-07-06 KR KR1020160085395A patent/KR102589406B1/ko active Active
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2019
- 2019-12-09 US US16/707,662 patent/US20200111679A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| KR102589406B1 (ko) | 2023-10-13 |
| KR20170006278A (ko) | 2017-01-17 |
| US20170011939A1 (en) | 2017-01-12 |
| US10541147B2 (en) | 2020-01-21 |
| TW201717300A (zh) | 2017-05-16 |
| US20200111679A1 (en) | 2020-04-09 |
| TWI694531B (zh) | 2020-05-21 |
| JP2017022154A (ja) | 2017-01-26 |
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