JP5862012B2 - ドライエッチング剤及びドライエッチング方法 - Google Patents
ドライエッチング剤及びドライエッチング方法 Download PDFInfo
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- JP5862012B2 JP5862012B2 JP2011011049A JP2011011049A JP5862012B2 JP 5862012 B2 JP5862012 B2 JP 5862012B2 JP 2011011049 A JP2011011049 A JP 2011011049A JP 2011011049 A JP2011011049 A JP 2011011049A JP 5862012 B2 JP5862012 B2 JP 5862012B2
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- 238000001312 dry etching Methods 0.000 title claims description 35
- 238000000034 method Methods 0.000 title claims description 25
- 239000007789 gas Substances 0.000 claims description 87
- 238000005530 etching Methods 0.000 claims description 69
- 239000003795 chemical substances by application Substances 0.000 claims description 28
- PRDFNJUWGIQQBW-UHFFFAOYSA-N 3,3,3-trifluoroprop-1-yne Chemical compound FC(F)(F)C#C PRDFNJUWGIQQBW-UHFFFAOYSA-N 0.000 claims description 23
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 21
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 17
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 17
- 239000011261 inert gas Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 239000000377 silicon dioxide Substances 0.000 claims description 10
- 235000012239 silicon dioxide Nutrition 0.000 claims description 10
- 229910052739 hydrogen Inorganic materials 0.000 claims description 9
- 239000002210 silicon-based material Substances 0.000 claims description 9
- 229910052794 bromium Inorganic materials 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 229910052801 chlorine Inorganic materials 0.000 claims description 3
- 229910052740 iodine Inorganic materials 0.000 claims description 3
- 239000000969 carrier Substances 0.000 claims 1
- 238000012545 processing Methods 0.000 description 12
- 229910004298 SiO 2 Inorganic materials 0.000 description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 9
- 229910052760 oxygen Inorganic materials 0.000 description 9
- 239000001301 oxygen Substances 0.000 description 9
- 229910052710 silicon Inorganic materials 0.000 description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 8
- 229910052736 halogen Inorganic materials 0.000 description 8
- 150000002367 halogens Chemical class 0.000 description 8
- 239000010703 silicon Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 230000001590 oxidative effect Effects 0.000 description 7
- 239000004065 semiconductor Substances 0.000 description 7
- 239000000654 additive Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 230000000996 additive effect Effects 0.000 description 5
- 238000001020 plasma etching Methods 0.000 description 5
- 229910002091 carbon monoxide Inorganic materials 0.000 description 4
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical class FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 4
- 239000011229 interlayer Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052707 ruthenium Inorganic materials 0.000 description 4
- 229910021332 silicide Inorganic materials 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 125000004432 carbon atom Chemical group C* 0.000 description 3
- IYRWEQXVUNLMAY-UHFFFAOYSA-N carbonyl fluoride Chemical compound FC(F)=O IYRWEQXVUNLMAY-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000001771 impaired effect Effects 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- -1 octafluoropentadiene Chemical compound 0.000 description 3
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 3
- 238000010792 warming Methods 0.000 description 3
- LGPPATCNSOSOQH-UHFFFAOYSA-N 1,1,2,3,4,4-hexafluorobuta-1,3-diene Chemical compound FC(F)=C(F)C(F)=C(F)F LGPPATCNSOSOQH-UHFFFAOYSA-N 0.000 description 2
- HMAHQANPHFVLPT-UHFFFAOYSA-N 1,3,3-trifluoroprop-1-yne Chemical compound FC#CC(F)F HMAHQANPHFVLPT-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N Propene Chemical compound CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- RWRIWBAIICGTTQ-UHFFFAOYSA-N difluoromethane Chemical compound FCF RWRIWBAIICGTTQ-UHFFFAOYSA-N 0.000 description 2
- 150000002170 ethers Chemical class 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 229910052702 rhenium Inorganic materials 0.000 description 2
- 229910052594 sapphire Inorganic materials 0.000 description 2
- 239000010980 sapphire Substances 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- NDMMKOCNFSTXRU-UHFFFAOYSA-N 1,1,2,3,3-pentafluoroprop-1-ene Chemical compound FC(F)C(F)=C(F)F NDMMKOCNFSTXRU-UHFFFAOYSA-N 0.000 description 1
- 101100285389 Arabidopsis thaliana HLS1 gene Proteins 0.000 description 1
- 101150030345 COP3 gene Proteins 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- OJCDKHXKHLJDOT-UHFFFAOYSA-N fluoro hypofluorite;silicon Chemical compound [Si].FOF OJCDKHXKHLJDOT-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- 229910000449 hafnium oxide Inorganic materials 0.000 description 1
- KQHQLIAOAVMAOW-UHFFFAOYSA-N hafnium(4+) oxygen(2-) zirconium(4+) Chemical compound [O--].[O--].[O--].[O--].[Zr+4].[Hf+4] KQHQLIAOAVMAOW-UHFFFAOYSA-N 0.000 description 1
- WIHZLLGSGQNAGK-UHFFFAOYSA-N hafnium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Hf+4] WIHZLLGSGQNAGK-UHFFFAOYSA-N 0.000 description 1
- 150000002366 halogen compounds Chemical class 0.000 description 1
- WBCLXFIDEDJGCC-UHFFFAOYSA-N hexafluoro-2-butyne Chemical compound FC(F)(F)C#CC(F)(F)F WBCLXFIDEDJGCC-UHFFFAOYSA-N 0.000 description 1
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical compound FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 229910001936 tantalum oxide Inorganic materials 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
Images
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- Drying Of Semiconductors (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Plasma Technology (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Description
(A)3,3,3−トリフルオロプロピンと、(B)COCl 2 、及びCOF 2 からなる群より選ばれる少なくとも1種のガス、とを含む、二酸化珪素及び窒化珪素からなる群より選ばれる少なくとも1種のシリコン系材料をエッチングするためのドライエッチング剤。
(A)3,3,3−トリフルオロプロピンと、(C)F 2 、NF 3 、Br 2 、I 2 、及びYF n (式中、YはCl、Br又はIを表す。nは整数を表し、1≦n≦5である。)からなる群より選ばれる少なくとも1種のガス、とを含む、二酸化珪素及び窒化珪素からなる群より選ばれる少なくとも1種のシリコン系材料をエッチングするためのドライエッチング剤。
(A)3,3,3−トリフルオロプロピンと、(D)CF 4 、C 2 F 6 、C 2 F 5 H、C 2 F 4 H 2 、C 3 F 8 、C 3 F 4 H 2 、C 3 ClF 3 H、及びC 4 F 8 からなる群より選ばれる少なくとも1種のガス、とを含む、二酸化珪素及び窒化珪素からなる群より選ばれる少なくとも1種のシリコン系材料をエッチングするためのドライエッチング剤。
さらに、不活性ガスキャリアーであるN2、He、Ar、Ne、及びKrからなる群より選ばれる少なくとも1種のガスを含む、発明1乃至発明3の何れかに記載のドライエッチング剤。
3,3,3−トリフルオロプロピンの含有率が、5〜95体積%である発明1乃至発明4に記載のドライエッチング剤。
発明1乃至発明5の何れかに記載のドライエッチング剤をプラズマ化して得られるプラズマガスを用いて、二酸化珪素及び窒化珪素からなる群より選ばれる少なくとも1種のシリコン系材料を選択的にエッチングするドライエッチング方法。
2.アース
3.高周波電源装置
4.第一ガス導入口(表1のガス1、CF3C≡CHをマスフローコントローラーで制御して導入)
5. 第二ガス導入口(表1のガス2、O2、CO、COF2、F2、Cl2、 NF3をマスフローコントローラーで制御して導入)
6. 第三ガス導入口(表1のガス2又は3、Ar、CHF3、CF4、C2F6、C3F8、H2をマスフローコントローラーで制御して導入)
7. サファイア管
8. 電子式圧力計
9. 排ガスライン
10. 試料ホルダ
11. 試料
Claims (6)
- (A)3,3,3−トリフルオロプロピンと、(B)COCl 2 、及びCOF 2 からなる群より選ばれる少なくとも1種のガス、とを含む、二酸化珪素及び窒化珪素からなる群より選ばれる少なくとも1種のシリコン系材料をエッチングするためのドライエッチング剤。
- (A)3,3,3−トリフルオロプロピンと、(C)F 2 、NF 3 、Br 2 、I 2 、及びYF n (式中、YはCl、Br又はIを表す。nは整数を表し、1≦n≦5である。)からなる群より選ばれる少なくとも1種のガス、とを含む、二酸化珪素及び窒化珪素からなる群より選ばれる少なくとも1種のシリコン系材料をエッチングするためのドライエッチング剤。
- (A)3,3,3−トリフルオロプロピンと、(D)CF 4 、C 2 F 6 、C 2 F 5 H、C 2 F 4 H 2 、C 3 F 8 、C 3 F 4 H 2 、C 3 ClF 3 H、及びC 4 F 8 からなる群より選ばれる少なくとも1種のガス、とを含む、二酸化珪素及び窒化珪素からなる群より選ばれる少なくとも1種のシリコン系材料をエッチングするためのドライエッチング剤。
- さらに、不活性ガスキャリアーであるN2、He、Ar、Ne、及びKrからなる群より選ばれる少なくとも1種のガスを含む、請求項1乃至請求項3の何れかに記載のドライエッチング剤。
- 3,3,3−トリフルオロプロピンの含有率が、5〜95体積%である請求項1乃至請求項4に記載のドライエッチング剤。
- 請求項1乃至請求項5の何れかに記載のドライエッチング剤をプラズマ化して得られるプラズマガスを用いて、二酸化珪素及び窒化珪素からなる群より選ばれる少なくとも1種のシリコン系材料を選択的にエッチングするドライエッチング方法。
Priority Applications (8)
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JP2011011049A JP5862012B2 (ja) | 2010-02-01 | 2011-01-21 | ドライエッチング剤及びドライエッチング方法 |
PCT/JP2011/051304 WO2011093263A1 (ja) | 2010-02-01 | 2011-01-25 | ドライエッチング剤及びそれを用いたドライエッチング方法 |
CN201180008023.1A CN102741987B (zh) | 2010-02-01 | 2011-01-25 | 干蚀刻剂以及使用其的干蚀刻方法 |
EP11736976.9A EP2511948A4 (en) | 2010-02-01 | 2011-01-25 | DRY ETCHING AGENT AND DRY ETCHING METHOD USING THE SAME |
KR1020127022186A KR101422155B1 (ko) | 2010-02-01 | 2011-01-25 | 드라이 에칭제 및 그것을 사용한 드라이 에칭 방법 |
US13/576,093 US9093388B2 (en) | 2010-02-01 | 2011-01-25 | Dry etching agent and dry etching method using the same |
TW100104013A TWI491710B (zh) | 2010-02-01 | 2011-02-01 | Dry etchants and dry etching methods using them |
US14/271,647 US9230821B2 (en) | 2010-02-01 | 2014-05-07 | Dry etching agent and dry etching method using the same |
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JP2011011049A JP5862012B2 (ja) | 2010-02-01 | 2011-01-21 | ドライエッチング剤及びドライエッチング方法 |
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TWI642809B (zh) * | 2013-09-09 | 2018-12-01 | 法商液態空氣喬治斯克勞帝方法研究開發股份有限公司 | 用蝕刻氣體蝕刻半導體結構的方法 |
JP2016051777A (ja) * | 2014-08-29 | 2016-04-11 | 日本ゼオン株式会社 | シリコン酸化膜のプラズマエッチング方法 |
US9728422B2 (en) | 2015-01-23 | 2017-08-08 | Central Glass Company, Limited | Dry etching method |
JP6544215B2 (ja) | 2015-01-23 | 2019-07-17 | セントラル硝子株式会社 | ドライエッチング方法 |
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JPS5878427A (ja) * | 1981-11-05 | 1983-05-12 | Toshiba Corp | ドライエツチング方法 |
US6174451B1 (en) * | 1998-03-27 | 2001-01-16 | Applied Materials, Inc. | Oxide etch process using hexafluorobutadiene and related unsaturated hydrofluorocarbons |
US6387287B1 (en) * | 1998-03-27 | 2002-05-14 | Applied Materials, Inc. | Process for etching oxide using a hexafluorobutadiene and manifesting a wide process window |
JP2002359229A (ja) * | 2001-06-01 | 2002-12-13 | Mitsubishi Electric Corp | 半導体装置の製造方法および半導体装置の製造装置 |
EP1760769A4 (en) * | 2004-05-31 | 2009-05-13 | Nat Inst Of Advanced Ind Scien | DRYING GASES AND METHOD OF DRYING |
JP5131436B2 (ja) * | 2007-05-31 | 2013-01-30 | 日本ゼオン株式会社 | エッチング方法 |
US8535551B2 (en) * | 2007-09-28 | 2013-09-17 | Zeon Corporation | Plasma etching method |
JP2009206394A (ja) * | 2008-02-29 | 2009-09-10 | Nippon Zeon Co Ltd | 炭素系ハードマスクの形成方法 |
JP4978512B2 (ja) * | 2008-02-29 | 2012-07-18 | 日本ゼオン株式会社 | プラズマエッチング方法 |
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