JP6698649B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP6698649B2 JP6698649B2 JP2017524138A JP2017524138A JP6698649B2 JP 6698649 B2 JP6698649 B2 JP 6698649B2 JP 2017524138 A JP2017524138 A JP 2017524138A JP 2017524138 A JP2017524138 A JP 2017524138A JP 6698649 B2 JP6698649 B2 JP 6698649B2
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- insulator
- conductor
- transistor
- semiconductor
- oxide semiconductor
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Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/08—Oxides
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
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Description
本実施の形態では、本発明の一態様に係る半導体装置の構成について、図1乃至図7を用いて説明する。
以下では、本発明の一態様に係る半導体装置の一例としてトランジスタの構成について説明する。
以下、半導体106bの詳細な構成について説明する。
ここで、酸化物半導体膜を用いたトランジスタのモデルについて数値計算を行って、チャネル部のポテンシャル障壁の高さについて評価した結果について説明する。
以下に、トランジスタ10の半導体以外の各構成要素について詳細な説明を行う。
以下、トランジスタ10の変形例について図2乃至図4を用いて説明する。なお、図2(A)乃至(F)、図3(A)(B)は、図1(B)及び図1(C)と同様に、トランジスタのチャネル長方向の断面図とトランジスタのチャネル幅方向の断面図になる。
以下において、図5乃至図7を用いてトランジスタ50の作製方法について説明する。
本実施の形態では、本発明の一態様の半導体装置に含まれる酸化物半導体の詳細について、以下説明する。
以下では、酸化物半導体の構造について説明する。
まずは、CAAC−OSについて説明する。
次に、nc−OSについて説明する。
a−like OSは、nc−OSと非晶質酸化物半導体との間の構造を有する酸化物半導体である。
本実施の形態においては、本発明の一態様に係るトランジスタなどを利用した半導体装置の回路の一例について説明する。
<回路>
以下では、本発明の一態様に係るトランジスタなどを利用した半導体装置の回路の一例について説明する。
図16(A)に示す回路図は、pチャネル型のトランジスタ2200とnチャネル型のトランジスタ2100を直列に接続し、かつそれぞれのゲートを接続した、いわゆるCMOSインバータの構成を示している。
また図16(B)に示す回路図は、トランジスタ2100とトランジスタ2200のそれぞれのソースとドレインを接続した構成を示している。このような構成とすることで、いわゆるCMOSアナログスイッチとして機能させることができる。
本発明の一態様に係るトランジスタを用いた、電力が供給されない状況でも記憶内容の保持が可能で、かつ、書き込み回数にも制限が無い半導体装置(記憶装置)の一例を図17に示す。
図17(B)に示す半導体装置は、トランジスタ3200を有さない点で図17(A)に示した半導体装置と異なる。この場合も図17(A)に示した半導体装置と同様の動作により情報の書き込みおよび保持動作が可能である。
図17(A)に示す半導体装置(記憶装置)の変形例について、図18に示す回路図を用いて説明する。
図17(C)に示す半導体装置は、トランジスタ3500、第6の配線3006を有する点で図17(A)に示した半導体装置と異なる。この場合も図17(A)に示した半導体装置と同様の動作により情報の書き込みおよび保持動作が可能である。また、トランジスタ3500としては上記のトランジスタ3200と同様のトランジスタを用いればよい。
本実施の形態では、上述の実施の形態で説明したOSトランジスタを適用可能な回路構成の一例について、図19乃至図22を用いて説明する。
本実施の形態においては、本発明の一態様に係るトランジスタや上述した記憶装置などの半導体装置を含むCPUの一例について説明する。
図23は、上述したトランジスタを一部に用いたCPUの一例の構成を示すブロック図である。
本実施の形態においては、本発明の一態様に係るトランジスタなどを利用した電子機器について説明する。
本発明の一態様に係る半導体装置は、表示機器、パーソナルコンピュータ、記録媒体を備えた画像再生装置(代表的にはDVD:Digital Versatile Disc等の記録媒体を再生し、その画像を表示しうるディスプレイを有する装置)に用いることができる。その他に、本発明の一態様に係る半導体装置を用いることができる電子機器として、携帯電話、携帯型を含むゲーム機、携帯データ端末、電子書籍端末、ビデオカメラ、デジタルスチルカメラ等のカメラ、ゴーグル型ディスプレイ(ヘッドマウントディスプレイ)、ナビゲーションシステム、音響再生装置(カーオーディオ、デジタルオーディオプレイヤー等)、複写機、ファクシミリ、プリンタ、プリンタ複合機、現金自動預け入れ払い機(ATM)、自動販売機などが挙げられる。これら電子機器の具体例を図25に示す。
10a トランジスタ
10b トランジスタ
10c トランジスタ
10d トランジスタ
10e トランジスタ
11 モデル
14 トランジスタ
50 トランジスタ
50a トランジスタ
102 導電体
104 導電体
106a 絶縁体
106b 半導体
106c 低抵抗領域
106d 低抵抗領域
108a 導電体
108b 導電体
112 絶縁体
114 導電体
150 基板
151 絶縁体
152 導電体
156a 絶縁体
156b 半導体
156c 絶縁体
156d 絶縁体
156e 絶縁体
156f 絶縁体
157 絶縁体
158a 導電体
158b 導電体
158c 導電体
158d 導電体
158e 導電体
158f 導電体
162 絶縁体
162a 絶縁体
162b 絶縁体
162c 絶縁体
162d 絶縁体
162e 絶縁体
162f 絶縁体
162g 絶縁体
162h 絶縁体
164a 導電体
164b 導電体
167 絶縁体
800 インバータ
810 OSトランジスタ
820 OSトランジスタ
831 信号波形
832 信号波形
840 破線
841 実線
850 OSトランジスタ
860 CMOSインバータ
901 筐体
902 筐体
903 表示部
904 表示部
905 マイクロフォン
906 スピーカー
907 操作キー
908 スタイラス
911 筐体
912 筐体
913 表示部
914 表示部
915 接続部
916 操作キー
921 筐体
922 表示部
923 キーボード
924 ポインティングデバイス
931 筐体
932 冷蔵室用扉
933 冷凍室用扉
941 筐体
942 筐体
943 表示部
944 操作キー
945 レンズ
946 接続部
951 車体
952 車輪
953 ダッシュボード
954 ライト
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
1200 記憶素子
1201 回路
1202 回路
1203 スイッチ
1204 スイッチ
1206 論理素子
1207 容量素子
1208 容量素子
1209 トランジスタ
1210 トランジスタ
1213 トランジスタ
1214 トランジスタ
1220 回路
2100 トランジスタ
2200 トランジスタ
3001 配線
3002 配線
3003 配線
3004 配線
3005 配線
3006 配線
3200 トランジスタ
3300 トランジスタ
3400 容量素子
3500 トランジスタ
4001 配線
4003 配線
4005 配線
4006 配線
4007 配線
4008 配線
4009 配線
4021 層
4022 層
4023 層
4100 トランジスタ
4200 トランジスタ
4300 トランジスタ
4400 トランジスタ
4500 容量素子
4600 容量素子
Claims (10)
- 環状に設けられた第1の導電体と、
前記第1の導電体の環の内側を通して伸長した領域を有する酸化物半導体と、
前記第1の導電体と、前記酸化物半導体との間に設けられた第1の絶縁体と、
前記第1の導電体と、前記第1の絶縁体との間に設けられた第2の絶縁体と、
前記第1の導電体の環の内側を通して設けられた第2の導電体と、を有し、
前記第2の導電体は、前記第2の絶縁体中に設けられる半導体装置。 - 請求項1において、
前記酸化物半導体に接して、前記第1の導電体を間に挟んで設けられた第3の導電体及び第4の導電体と、をさらに有し、
前記第3の導電体と前記第4の導電体の間の距離は2nm以上30nm以下であることを特徴とする半導体装置。 - 請求項1または請求項2において、
前記酸化物半導体の伸長方向に略垂直な面における断面形状は、略円形状であることを特徴とする半導体装置。 - 請求項1または請求項2において、
前記酸化物半導体の伸長方向に略垂直な面における断面形状は、略多角形状であることを特徴とする半導体装置。 - 請求項1または請求項2において、
前記半導体装置は、基板上に設けられており、
前記基板の上面は、前記酸化物半導体の伸長方向に略平行であることを特徴とする半導体装置。 - 請求項1または請求項2において、
前記半導体装置は、基板上に設けられており、
前記基板の上面は、前記酸化物半導体の伸長方向に略垂直であることを特徴とする半導体装置。 - 請求項1または請求項2において、
前記第1の絶縁体は、インジウム、元素M(Ti、Ga、Y、Zr、La、Ce、Nd、SnまたはHf)及び亜鉛のうち少なくとも一以上を有することを特徴とする半導体装置。 - 基板上に、第1の方向に伸長して設けられた第1の導電体と、
前記第1の導電体上に設けられた第1の絶縁体と、
前記第1の絶縁体上に設けられた、開口を有する第2の絶縁体と、
前記第2の絶縁体に形成された開口の中に、前記第1の方向に略垂直である第2の方向に伸長して設けられた第2の導電体と
前記第2の絶縁体及び前記第2の導電体上に設けられた第3の絶縁体と、
前記第3の絶縁体上に設けられた第4の絶縁体と、
前記第3の絶縁体上に、前記第4の絶縁体を間に挟んで設けられた第3の導電体及び第4の導電体と、
前記第4の絶縁体、前記第3の導電体及び前記第4の導電体の上面に接して、第2の方向に伸長して設けられた酸化物半導体と、
前記酸化物半導体の上面及び側面と、前記第3の導電体の側面に接して、第5の絶縁体を間に挟んで第6の導電体と対向して設けられた第5の導電体と、
前記酸化物半導体の上面及び側面と、前記第4の導電体の側面に接して、第5の絶縁体を間に挟んで前記第5導電体と対向して設けられた前記第6の導電体と、
前記第5の導電体及び前記第6の導電体上に設けられ、前記第5の導電体と前記第6の導電体の間に開口を有する第6の絶縁体と、
前記酸化物半導体の上面、前記第5の導電体及び前記第6の導電体の側面、前記第6の絶縁体の側面と接して設けられた前記第5の絶縁体と、
前記第5の絶縁体の上面に接して設けられた第7の絶縁体と、
前記第7の絶縁体の上面に接して設けられた第7の導電体と、を有し、
前記第1の方向に略垂直な面の断面において、
前記第4の絶縁体と前記第5の絶縁体は、前記酸化物半導体を囲むように設けられ、
前記第3の絶縁体と前記第7の絶縁体は、前記第4の絶縁体、前記酸化物半導体及び前記第5の絶縁体を囲むように設けられ、
前記第1の導電体と前記第7の導電体は、前記第1乃至第3の絶縁体及び前記第7の絶縁体を囲むように設けられることを特徴とする半導体装置。 - 請求項8において、
前記第4の絶縁体及び前記第5の絶縁体は、インジウム、元素M(Ti、Ga、Y、Zr、La、Ce、Nd、SnまたはHf)及び亜鉛のうち少なくとも一以上を有することを特徴とする半導体装置。 - 請求項1、請求項2、請求項8及び請求項9のいずれか一において、
前記酸化物半導体は、インジウム、元素M(Ti、Ga、Y、Zr、La、Ce、Nd、SnまたはHf)、亜鉛および酸素を有することを特徴とする半導体装置。
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