JP5430109B2 - Soi基板の作製方法 - Google Patents
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- JP5430109B2 JP5430109B2 JP2008252105A JP2008252105A JP5430109B2 JP 5430109 B2 JP5430109 B2 JP 5430109B2 JP 2008252105 A JP2008252105 A JP 2008252105A JP 2008252105 A JP2008252105 A JP 2008252105A JP 5430109 B2 JP5430109 B2 JP 5430109B2
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Description
本実施の形態では、単結晶半導体層とベース基板との間に窒素含有層を有するSOI基板の作製方法の一例に関して図面を参照して説明する。
本実施の形態では、上記実施の形態と異なるSOI基板の作製方法に関して図面を参照して説明する。具体的には、ベース基板側に接合層となる窒素含有層を設ける場合に関して説明する。
本実施の形態では、上記実施の形態で作製したSOI基板を用いて、半導体装置を作製する方法を説明する。
102 酸化膜
103 イオン
104 脆化領域
105 窒素含有層
106 窒素含有層
120 ベース基板
121 窒素含有層
124 単結晶半導体層
126 窒素含有層
132 酸化膜
251 半導体層
252 半導体層
254 絶縁膜
255 ゲート電極
256 ゲート電極
257 低濃度不純物領域
258 チャネル形成領域
259 高濃度不純物領域
260 チャネル形成領域
261 サイドウォール絶縁膜
265 レジスト
267 高濃度不純物領域
268 絶縁膜
269 層間絶縁膜
270 配線
320 単結晶半導体層
322 走査線
323 信号線
324 画素電極
325 TFT
327 層間絶縁膜
328 電極
329 柱状スペーサ
330 配向膜
332 対向基板
333 対向電極
334 配向膜
335 液晶層
340 チャネル形成領域
341 高濃度不純物領域
401 選択用トランジスタ
402 表示制御用トランジスタ
403 半導体層
404 半導体層
405 走査線
406 信号線
407 電流供給線
408 画素電極
410 電極
411 電極
412 ゲート電極
413 電極
427 層間絶縁膜
428 隔壁層
429 EL層
430 対向電極
431 対向基板
432 樹脂層
451 チャネル形成領域
452 高濃度不純物領域
500 マイクロプロセッサ
501 演算回路
502 演算回路制御部
503 命令解析部
504 制御部
505 タイミング制御部
506 レジスタ
507 レジスタ制御部
508 バスインターフェース
509 専用メモリ
510 メモリインターフェース
511 RFCPU
512 アナログ回路部
513 デジタル回路部
514 共振回路
515 整流回路
516 定電圧回路
517 リセット回路
518 発振回路
519 復調回路
520 変調回路
521 RFインターフェース
522 制御レジスタ
523 クロックコントローラ
524 インターフェース
525 中央処理ユニット
526 ランダムアクセスメモリ
527 専用メモリ
528 アンテナ
529 容量部
530 電源管理回路
700 携帯電話
701 筐体
702 筐体
703 表示部
704 スピーカ
705 マイクロフォン
706 操作キー
707 ポインティングデバイス
708 表面カメラ用レンズ
709 外部接続端子ジャック
710 イヤホン端子
711 キーボード
712 外部メモリスロット
713 裏面カメラ
714 ライト
Claims (7)
- 単結晶半導体基板と、絶縁体でなるベース基板とを用意し、
前記単結晶半導体基板上に酸化膜を形成し、
前記単結晶半導体基板にイオンを照射して前記単結晶半導体基板中に脆化領域を形成し、
前記酸化膜上又は前記ベース基板上にプラズマCVD法を用いて窒素含有層を成膜し、
前記酸化膜及び前記窒素含有層を介して前記単結晶半導体基板と前記ベース基板とを貼り合わせ、
前記脆化領域において前記単結晶半導体基板を分離して、前記ベース基板上に前記酸化膜及び前記窒素含有層を介して単結晶半導体層を形成する工程を有し、
前記窒素含有層の成膜ガスとして、少なくとも水素ガス、シランガス及びアンモニアガスを用い、
前記窒素含有層の表面の平均面粗さは、0.5nm以下であり、自乗平均粗さは、0.45nm以下であり、
前記窒素含有層の成膜を、基板温度が室温以上300℃以下であって、成膜圧力が160Pa以上で行うことを特徴とするSOI基板の作製方法。 - 単結晶半導体基板と、絶縁体でなるベース基板とを用意し、
前記単結晶半導体基板上に酸化膜を形成し、
前記単結晶半導体基板にイオンを照射して前記単結晶半導体基板中に脆化領域を形成し、
前記酸化膜上又は前記ベース基板上にプラズマCVD法を用いて窒素含有層を成膜し、
前記酸化膜及び前記窒素含有層を介して前記単結晶半導体基板と前記ベース基板とを貼り合わせ、
前記脆化領域において前記単結晶半導体基板を分離して、前記ベース基板上に前記酸化膜及び前記窒素含有層を介して単結晶半導体層を形成する工程を有し、
前記窒素含有層の成膜ガスとして、少なくとも水素ガス、シランガス及びアンモニアガスを用い、
前記窒素含有層の表面の平均面粗さは、0.5nm以下であり、自乗平均粗さは、0.45nm以下であり、
前記窒素含有層の成膜を、基板温度が室温以上200℃以下であって、成膜圧力が120Pa以上で行うことを特徴とするSOI基板の作製方法。 - 請求項1又は請求項2において、
前記酸化膜は、前記単結晶半導体基板を、塩化水素を含有させた酸化性雰囲気で熱処理することにより形成されることを特徴とするSOI基板の作製方法。 - 請求項1又は請求項2において、
前記酸化膜は、前記単結晶半導体基板を、フッ酸に浸漬した後に酸化性雰囲気で熱処理することにより形成されることを特徴とするSOI基板の作製方法。 - 請求項1乃至請求項4のいずれか一項において、
前記単結晶半導体基板と前記ベース基板との貼り合わせの際、加圧処理を行った後に加熱処理を行うことを特徴とするSOI基板の作製方法。 - 請求項1乃至請求項5のいずれか一項において、
前記単結晶半導体基板に照射するイオンは、水素ガスから生成されるイオン種の総量に対してH3 +の割合が50%以上のものであることを特徴とするSOI基板の作製方法。 - 請求項1乃至請求項6のいずれか一項において、
前記ベース基板として、ガラス基板を用いることを特徴とするSOI基板の作製方法。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008252105A JP5430109B2 (ja) | 2008-09-30 | 2008-09-30 | Soi基板の作製方法 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008252105A JP5430109B2 (ja) | 2008-09-30 | 2008-09-30 | Soi基板の作製方法 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2010087067A JP2010087067A (ja) | 2010-04-15 |
| JP2010087067A5 JP2010087067A5 (ja) | 2011-09-15 |
| JP5430109B2 true JP5430109B2 (ja) | 2014-02-26 |
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