JP6345023B2 - 半導体装置およびその作製方法 - Google Patents
半導体装置およびその作製方法 Download PDFInfo
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- JP6345023B2 JP6345023B2 JP2014157316A JP2014157316A JP6345023B2 JP 6345023 B2 JP6345023 B2 JP 6345023B2 JP 2014157316 A JP2014157316 A JP 2014157316A JP 2014157316 A JP2014157316 A JP 2014157316A JP 6345023 B2 JP6345023 B2 JP 6345023B2
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- Prior art keywords
- insulating film
- oxide semiconductor
- film
- region
- semiconductor film
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
- H01L21/02521—Materials
- H01L21/02551—Group 12/16 materials
- H01L21/02554—Oxides
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Description
以下では、半導体装置内部における過剰酸素の挙動について図1を用いて説明する。
図16(B)に、酸化物半導体膜へ不純物を添加して抵抗を下げることができる一例を示す。図16(B)は、基板70と、基板70上の絶縁膜72と、絶縁膜72上の酸化物半導体膜76とを有する試料の断面構造である。
以下では、図1(B)に領域53で示した酸素ブロック領域を形成することが可能な方法について説明する。
以下では、本発明の一態様に係るトランジスタの構造および作製方法について説明する。
まず、トップゲートセルフアライン型のトランジスタの一例について説明する。
以下では、トランジスタ構造(1)の作製方法の一例について説明する。
次に、トランジスタ構造(1)とはゲート絶縁膜の形状が異なるトップゲートセルフアライン型のトランジスタの一例について説明する。
以下では、トランジスタ構造(2)の作製方法の一例について説明する。
次に、ゲート電極の側壁にサイドウォール絶縁膜を形成したトップゲートセルフアライン型のトランジスタの一例について説明する。
以下では、トランジスタ構造(3)の作製方法の一例について説明する。
次に、酸化物半導体膜として3層の積層構造を有し、保護膜として酸素透過性の低い膜を用いた場合のトップゲートセルフアライン型のトランジスタの一例について説明する。
以下では、トランジスタ構造(4)の作製方法の一例について説明する。
以下では、上述したトランジスタを用いた応用製品について説明する。
図20は、上述したトランジスタを少なくとも一部に用いたCPUの具体的な構成を示すブロック図である。
図21(A)において、テレビジョン装置8000は、筐体8001に表示部8002が組み込まれており、表示部8002により映像を表示し、スピーカー部8003から音声を出力することが可能である。
52 絶縁膜
53 領域
56 酸化物半導体膜
68 絶縁膜
70 基板
72 絶縁膜
73 領域
73a 領域
76 酸化物半導体膜
77 領域
78 領域
79 領域
81 レジストマスク
82 レジストマスク
88 絶縁膜
101 基板
102 下地絶縁膜
103 酸化物半導体膜
104 ゲート絶縁膜
105 ゲート電極
106 絶縁膜
107 導電膜
107a ソース電極
107b ドレイン電極
121 絶縁膜
122 領域
131 レジストマスク
135 絶縁膜
136 酸化物半導体膜
151a 領域
151b 領域
151c 領域
151d 領域
181 チャネル長
182 チャネル幅
201 基板
202 下地絶縁膜
203 酸化物半導体膜
204 ゲート絶縁膜
205 ゲート電極
206 絶縁膜
207 導電膜
207a ソース電極
207b ドレイン電極
217a 端部
217b 端部
221 絶縁膜
222 領域
235 絶縁膜
236 酸化物半導体膜
251a 領域
251b 領域
251c 領域
251d 領域
251e 領域
301 基板
302 下地絶縁膜
303 酸化物半導体膜
304 ゲート絶縁膜
305 ゲート電極
306 絶縁膜
307 導電膜
307a ソース電極
307b ドレイン電極
308 サイドウォール絶縁膜
309 絶縁膜
321 絶縁膜
322 領域
351a 領域
351b 領域
351c 領域
351d 領域
401 基板
402 下地絶縁膜
403a 酸化物半導体膜
403b 酸化物半導体膜
403c 酸化物半導体膜
404 ゲート絶縁膜
405 ゲート電極
406 絶縁膜
407a ソース電極
407b ドレイン電極
408 絶縁膜
421 絶縁膜
431 レジストマスク
451a 領域
451b 領域
451c 領域
451d 領域
901 半導体膜
902 電子捕獲層
902a 第1の絶縁膜
902b 第2の絶縁膜
902c 第3の絶縁膜
903 ゲート電極
904 電子捕獲準位
905 電子
906 曲線
907 曲線
908 トランジスタ
909 容量素子
1001 基板
1002 絶縁膜
1003 酸化物半導体膜
1004 絶縁膜
1005 絶縁膜
1007 導電膜
1007a 電極
1007b 電極
1010 開口部
1141 スイッチング素子
1142 メモリセル
1143 メモリセル群
1189 ROMインターフェース
1190 基板
1191 ALU
1192 ALUコントローラ
1193 インストラクションデコーダ
1194 インタラプトコントローラ
1195 タイミングコントローラ
1196 レジスタ
1197 レジスタコントローラ
1198 バスインターフェース
1199 ROM
8000 テレビジョン装置
8001 筐体
8002 表示部
8003 スピーカー部
8100 警報装置
8101 マイクロコンピュータ
8200 室内機
8201 筐体
8202 送風口
8203 CPU
8204 室外機
8300 電気冷凍冷蔵庫
8301 筐体
8302 冷蔵室用扉
8303 冷凍室用扉
8304 CPU
9700 電気自動車
9701 二次電池
9702 制御回路
9703 駆動装置
9704 処理装置
Claims (2)
- 絶縁表面上の絶縁層と、
前記絶縁層上の酸化物半導体層と、
前記酸化物半導体層上のゲート絶縁層と、
前記ゲート絶縁層上のゲート電極と、を有し、
前記絶縁層と、前記酸化物半導体層は島状の形状であり、
前記絶縁層は過剰酸素を有し、
前記絶縁層は第1の領域と、第2の領域を有し、
前記第1の領域は、前記ゲート電極と重畳する領域を有し、
前記第2の領域は、前記絶縁層の側面を有し、
前記第2の領域は、不純物元素を有することを特徴とする半導体装置。 - 絶縁表面上に過剰酸素が含まれる絶縁層を形成し、
前記絶縁層上に酸化物半導体層を形成し、
前記絶縁層と前記酸化物半導体層を島状に加工し、
前記酸化物半導体層上にゲート絶縁層を形成し、
前記ゲート絶縁層上にゲート電極を形成し、
前記ゲート電極をマスクとして前記酸化物半導体層及び前記絶縁層にイオンドーピング法またはイオン注入法を用いて不純物元素を添加することを特徴とする半導体装置の作製方法。
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