JP2021077757A - SiC基板の再生方法 - Google Patents
SiC基板の再生方法 Download PDFInfo
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- JP2021077757A JP2021077757A JP2019202850A JP2019202850A JP2021077757A JP 2021077757 A JP2021077757 A JP 2021077757A JP 2019202850 A JP2019202850 A JP 2019202850A JP 2019202850 A JP2019202850 A JP 2019202850A JP 2021077757 A JP2021077757 A JP 2021077757A
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- Prior art keywords
- polishing
- sic substrate
- gan layer
- substrate
- polishing liquid
- Prior art date
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- 239000000758 substrate Substances 0.000 title claims abstract description 95
- 238000011069 regeneration method Methods 0.000 title abstract description 6
- 238000005498 polishing Methods 0.000 claims abstract description 143
- 239000007788 liquid Substances 0.000 claims abstract description 43
- 230000002378 acidificating effect Effects 0.000 claims abstract description 20
- 150000004767 nitrides Chemical class 0.000 claims abstract description 14
- 238000004140 cleaning Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims description 16
- 230000001172 regenerating effect Effects 0.000 claims description 6
- 230000008929 regeneration Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 71
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 66
- 229910010271 silicon carbide Inorganic materials 0.000 description 65
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 53
- 229910002601 GaN Inorganic materials 0.000 description 52
- 239000006061 abrasive grain Substances 0.000 description 15
- 230000001681 protective effect Effects 0.000 description 12
- 238000005422 blasting Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- 239000012790 adhesive layer Substances 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- JYLNVJYYQQXNEK-UHFFFAOYSA-N 3-amino-2-(4-chlorophenyl)-1-propanesulfonic acid Chemical compound OS(=O)(=O)CC(CN)C1=CC=C(Cl)C=C1 JYLNVJYYQQXNEK-UHFFFAOYSA-N 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 1
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- NWAIGJYBQQYSPW-UHFFFAOYSA-N azanylidyneindigane Chemical compound [In]#N NWAIGJYBQQYSPW-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Images
Landscapes
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
Abstract
Description
1a 表面
1b 裏面
2 研磨装置
3 GaN層(窒化物層)
4 基台
4a 開口
4b 支持部
5 保護テープ
6a,6b カセット載置台
7 テープ付き基板
8a,8b カセット
10 搬送ロボット
12 位置決めテーブル
14 搬入機構(ローディングアーム)
16 搬出機構(アンローディングアーム)
18 X軸移動テーブル
20 チャックテーブル
20a 保持面
20b 流路
22 多孔質プレート
24 搬入出領域
26 研磨領域
28 Z軸ガイドレール
30 Z軸移動プレート
32 Z軸ボールねじ
34 Z軸パルスモータ
36 研磨ユニット
38 スピンドルハウジング
40 スピンドル
42 マウント
44 研磨ホイール
46 基台
48 研磨パッド
50 流路
52 研磨液供給源
54 第1の研磨液供給路
56 第2の研磨液供給路
58 研磨液
60 スピンナ洗浄ユニット
Claims (2)
- 表面側に窒化物層が形成されたSiC基板の再生方法であって、
研磨装置のチャックテーブルの保持面で該SiC基板の裏面側を保持する保持工程と、
該研磨装置の研磨パッドから酸性の研磨液を供給しながら該研磨パッドを用いて該SiC基板の該表面側を研磨して、該窒化物層を除去する除去工程と、
該SiC基板を洗浄する洗浄工程と、
を備えることを特徴とするSiC基板の再生方法。 - 前記窒化物層はGaN層であることを特徴とする請求項1記載のSiC基板の再生方法。
Priority Applications (1)
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JP2019202850A JP2021077757A (ja) | 2019-11-08 | 2019-11-08 | SiC基板の再生方法 |
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JP2019202850A JP2021077757A (ja) | 2019-11-08 | 2019-11-08 | SiC基板の再生方法 |
Publications (1)
Publication Number | Publication Date |
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JP2021077757A true JP2021077757A (ja) | 2021-05-20 |
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Country Status (1)
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009123806A (ja) * | 2007-11-13 | 2009-06-04 | Denso Corp | 炭化珪素半導体装置の製造方法 |
JP2010087106A (ja) * | 2008-09-30 | 2010-04-15 | Showa Denko Kk | 炭化珪素単結晶基板 |
JP2011199096A (ja) * | 2010-03-23 | 2011-10-06 | Disco Corp | ウエーハの研削方法 |
JP2017108118A (ja) * | 2015-12-03 | 2017-06-15 | ファン トリライアント | SiCウェハのCMP材料除去レートを向上させるためのシリコンカーバイドエッチング液としての岩塩型塩 |
JP2019186323A (ja) * | 2018-04-05 | 2019-10-24 | 株式会社ディスコ | SiC基板の研磨方法 |
-
2019
- 2019-11-08 JP JP2019202850A patent/JP2021077757A/ja active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009123806A (ja) * | 2007-11-13 | 2009-06-04 | Denso Corp | 炭化珪素半導体装置の製造方法 |
JP2010087106A (ja) * | 2008-09-30 | 2010-04-15 | Showa Denko Kk | 炭化珪素単結晶基板 |
JP2011199096A (ja) * | 2010-03-23 | 2011-10-06 | Disco Corp | ウエーハの研削方法 |
JP2017108118A (ja) * | 2015-12-03 | 2017-06-15 | ファン トリライアント | SiCウェハのCMP材料除去レートを向上させるためのシリコンカーバイドエッチング液としての岩塩型塩 |
JP2019186323A (ja) * | 2018-04-05 | 2019-10-24 | 株式会社ディスコ | SiC基板の研磨方法 |
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