JP6315809B2 - エッチング方法 - Google Patents
エッチング方法 Download PDFInfo
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- JP6315809B2 JP6315809B2 JP2014174004A JP2014174004A JP6315809B2 JP 6315809 B2 JP6315809 B2 JP 6315809B2 JP 2014174004 A JP2014174004 A JP 2014174004A JP 2014174004 A JP2014174004 A JP 2014174004A JP 6315809 B2 JP6315809 B2 JP 6315809B2
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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
- H10P50/73—Etching of wafers, substrates or parts of devices using masks for insulating materials
-
- 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
-
- 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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- Drying Of Semiconductors (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- Electromagnetism (AREA)
- Spectroscopy & Molecular Physics (AREA)
Description
<工程ST1>
・高周波電力HF:周波数40MHz,500W
・高周波バイアス電力LF:周波数3MHz、50W
・電源70の直流電圧:−300V
・高周波電力HF及び高周波バイアス電力LFのパルス状の供給の周波数:20kHz
・高周波電力HF及び高周波バイアス電力LFのパルス状の供給のデューティ比:60%
・処理ガス
C4F6ガス:32sccm
Arガス:1500sccm
O2ガス:20sccm
・1サイクル中の工程ST1の実行時間:1秒
<工程ST2>
・高周波電力HF:周波数40MHz,500W
・高周波バイアス電力LF:周波数3MHz、50W
・電源70の直流電圧:−300V
・高周波電力HF及び高周波バイアス電力LFのパルス状の供給の周波数:20kHz
・高周波電力HF及び高周波バイアス電力LFのパルス状の供給のデューティ比:60%
・ガス
C4F6ガス:0sccm
Arガス:1500sccm
O2ガス:0sccm
・1サイクル中の工程ST2の実行時間:5秒
Claims (4)
- 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、フルオロカーボンガスを含む処理ガスのプラズマに晒す第1工程であり、前記第1領域をエッチングし、且つ前記第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、該第1工程と、
前記堆積物に含まれるフルオロカーボンのラジカルにより前記第1領域をエッチングする第2工程と、
を含み、
前記第1工程では、前記プラズマがパルス状の高周波電力によって生成され、
前記第1工程と前記第2工程とが交互に繰り返される、
方法。 - 前記第1工程において前記被処理体にイオンを引き込むためにパルス状の高周波バイアス電力が供給される、請求項1に記載の方法。
- 前記高周波バイアス電力と前記高周波電力が同期する、請求項2に記載の方法。
- 前記第2工程では、連続的に供給される高周波電力によって希ガスのプラズマが生成される、請求項1〜3の何れか一項に記載の方法。
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014174004A JP6315809B2 (ja) | 2014-08-28 | 2014-08-28 | エッチング方法 |
| US14/813,353 US9837285B2 (en) | 2014-08-28 | 2015-07-30 | Etching method |
| EP15179668.7A EP2991103A1 (en) | 2014-08-28 | 2015-08-04 | Etching method |
| TW104127812A TWI664676B (zh) | 2014-08-28 | 2015-08-26 | 蝕刻方法 |
| TW108110226A TWI692031B (zh) | 2014-08-28 | 2015-08-26 | 蝕刻方法 |
| KR1020150121028A KR102361782B1 (ko) | 2014-08-28 | 2015-08-27 | 에칭 방법 |
| CN201510542345.4A CN105390388B (zh) | 2014-08-28 | 2015-08-28 | 蚀刻方法 |
| US15/809,129 US9972503B2 (en) | 2014-08-28 | 2017-11-10 | Etching method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014174004A JP6315809B2 (ja) | 2014-08-28 | 2014-08-28 | エッチング方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2016048771A JP2016048771A (ja) | 2016-04-07 |
| JP6315809B2 true JP6315809B2 (ja) | 2018-04-25 |
Family
ID=53773374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2014174004A Active JP6315809B2 (ja) | 2014-08-28 | 2014-08-28 | エッチング方法 |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US9837285B2 (ja) |
| EP (1) | EP2991103A1 (ja) |
| JP (1) | JP6315809B2 (ja) |
| KR (1) | KR102361782B1 (ja) |
| CN (1) | CN105390388B (ja) |
| TW (2) | TWI692031B (ja) |
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| TW201624563A (zh) | 2016-07-01 |
| US9972503B2 (en) | 2018-05-15 |
| US20160064247A1 (en) | 2016-03-03 |
| KR20160028370A (ko) | 2016-03-11 |
| TWI692031B (zh) | 2020-04-21 |
| TW201929090A (zh) | 2019-07-16 |
| CN105390388A (zh) | 2016-03-09 |
| TWI664676B (zh) | 2019-07-01 |
| CN105390388B (zh) | 2018-12-25 |
| US9837285B2 (en) | 2017-12-05 |
| JP2016048771A (ja) | 2016-04-07 |
| KR102361782B1 (ko) | 2022-02-10 |
| US20180068865A1 (en) | 2018-03-08 |
| EP2991103A1 (en) | 2016-03-02 |
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