JP7139065B2 - ウェーハの加工方法 - Google Patents
ウェーハの加工方法 Download PDFInfo
- Publication number
- JP7139065B2 JP7139065B2 JP2018226357A JP2018226357A JP7139065B2 JP 7139065 B2 JP7139065 B2 JP 7139065B2 JP 2018226357 A JP2018226357 A JP 2018226357A JP 2018226357 A JP2018226357 A JP 2018226357A JP 7139065 B2 JP7139065 B2 JP 7139065B2
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- wafer
- electrode
- back surface
- insulating film
- electrodes
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Landscapes
- Engineering & Computer Science (AREA)
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- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- Drying Of Semiconductors (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
Description
1a 表面
1b 裏面
3 分割予定ライン
5 デバイス
7 電極
9 Via電極
11 保護部材
13 絶縁膜
15 歪み層
17 絶縁膜
19 電極
21,21a レジスト膜
23,23a,23b 電極
25 電極
2 高さ検出ユニット
4 保持テーブル
6 研削装置
6a 研削ユニット
8 スピンドル
10 ホイールマウント
12 研削ホイール
14 研削砥石
16 プラズマ処置装置
18 処理空間
20 真空チャンバー
20a 底壁
20b 上壁
20c,20d,20e 側壁
22 開口
24 ゲート
26 開閉機構
28 エアシリンダ
30 ピストンロッド
32 ブラケット
34 排気口
36 排気機構
38 下部電極
40 上部電極
42 保持部
44 支持部
46 開口
48 絶縁部材
50 高周波電源
52 テーブル
54 流路
56 吸引源
58 冷却流路
60 冷媒導入路
62 冷媒循環機構
64 冷媒排出路
66 ガス噴出部
68 支持部
70 開口
72 絶縁部材
74 高周波電源
76 昇降機構
78 支持アーム
80 噴出口
82 流路
84 流路
86 ガス供給源
88 ガス供給源
90 制御装置
Claims (4)
- 交差する複数の分割予定ラインが表面に設定され、該分割予定ラインによって区画された各領域にデバイスが形成され、該各領域に厚さ方向に沿ったVia電極が埋設され、該Via電極を覆う第1の絶縁膜が形成されたウェーハを加工するウェーハの加工方法であって、
該ウェーハの該表面に保護部材を配設する保護部材配設ステップと、
該ウェーハの該保護部材側をチャックテーブルで保持し、該Via電極を覆う該第1の絶縁膜が裏面側に露出しない程度に該ウェーハの該裏面を研削する研削ステップと、
研削ステップを実施した後、該ウェーハを真空チャンバーに収容し、該ウェーハの裏面にプラズマ化した第1のエッチングガスを供給して該第1の絶縁膜で覆われた該Via電極を該裏面側に突出させる電極突出ステップと、
該電極突出ステップを実施した後、該ウェーハの該裏面を第2の絶縁膜で覆う絶縁膜形成ステップと、
該絶縁膜形成ステップを実施した後、該ウェーハの該裏面に該Via電極と重なる開口を有するレジスト膜を形成した後、該ウェーハの該裏面にプラズマ化した第2のエッチングガスを供給し、該第1の絶縁膜及び該第2の絶縁膜の該開口と重なる領域を除去し、該Via電極を露出させるVia電極露出ステップと、
該Via電極露出ステップを実施した後、露出した該Via電極に接続する電極を形成する電極形成ステップと、
該レジスト膜を除去するレジスト除去ステップと、
を備えることを特徴とするウェーハの加工方法。 - 該電極形成ステップでは、該Via電極露出ステップにおいて形成された該レジスト膜を用いて該Via電極に接続する電極をめっきにより形成することを特徴とする請求項1記載のウェーハの加工方法。
- 該電極突出ステップを実施した後、該絶縁膜形成ステップを実施する前に、該ウェーハの該裏面にプラズマ化した不活性ガスを供給し、該ウェーハの該裏面に歪み層を形成する歪み層形成ステップをさらに備えることを特徴とする請求項1又は2に記載のウェーハの加工方法。
- 該歪み層形成ステップでは、該電極突出ステップで用いた該真空チャンバーに該ウェーハを収容したまま該真空チャンバーから該第1のエッチングガスを排気した後、該真空チャンバーにおいて該ウェーハの該裏面にプラズマ化した該不活性ガスを供給して該歪み層を形成することを特徴とする請求項3記載のウェーハの加工方法。
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JP2018226357A JP7139065B2 (ja) | 2018-12-03 | 2018-12-03 | ウェーハの加工方法 |
US16/700,534 US10957542B2 (en) | 2018-12-03 | 2019-12-02 | Method of processing wafer |
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