JP5740167B2 - 半導体装置及び電子機器 - Google Patents
半導体装置及び電子機器 Download PDFInfo
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- JP5740167B2 JP5740167B2 JP2011020322A JP2011020322A JP5740167B2 JP 5740167 B2 JP5740167 B2 JP 5740167B2 JP 2011020322 A JP2011020322 A JP 2011020322A JP 2011020322 A JP2011020322 A JP 2011020322A JP 5740167 B2 JP5740167 B2 JP 5740167B2
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- oxide semiconductor
- semiconductor device
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/786—Thin film transistors, i.e. transistors with a channel being at least partly a thin film
- H01L29/7869—Thin film transistors, i.e. transistors with a channel being at least partly a thin film having a semiconductor body comprising an oxide semiconductor material, e.g. zinc oxide, copper aluminium oxide, cadmium stannate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/41—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
- H01L29/417—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
- H01L29/41725—Source or drain electrodes for field effect devices
- H01L29/41733—Source or drain electrodes for field effect devices for thin film transistors with insulated gate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/43—Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/45—Ohmic electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66969—Multistep manufacturing processes of devices having semiconductor bodies not comprising group 14 or group 13/15 materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
- Y10T428/24372—Particulate matter
- Y10T428/24421—Silicon containing
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Thin Film Transistor (AREA)
- Semiconductor Memories (AREA)
- Non-Volatile Memory (AREA)
- Electrodes Of Semiconductors (AREA)
Description
本実施の形態では、開示する発明の一態様に係る半導体装置の構成およびその作製工程の例について、図1乃至図3を参照して説明する。
図1に、半導体装置の例として、トランジスタの断面構造を示す。図1では、開示する発明の一態様に係るトランジスタとして、トップゲート型のトランジスタを示している。
以下、図2及び図3を用いて、図1に示すトランジスタの作製工程の例について説明する。
本実施の形態では、開示する発明の一態様に係る半導体装置の応用例について、図4を参照して説明する。ここでは、記憶装置の一例について説明する。なお、回路図においては、酸化物半導体を用いたトランジスタであることを示すために、OSの符号を併せて付す場合がある。
本実施の形態では、開示する発明の一態様に係る半導体装置の応用例について、図5および図6を用いて説明する。
本実施の形態では、上述の実施の形態で説明した半導体装置を電子機器に適用する場合について、図7を用いて説明する。本実施の形態では、コンピュータ、携帯電話機(携帯電話、携帯電話装置ともいう)、携帯情報端末(携帯型ゲーム機、音響再生装置なども含む)、デジタルカメラ、デジタルビデオカメラ、電子ペーパー、テレビジョン装置(テレビ、またはテレビジョン受信機ともいう)などの電子機器に、上述の半導体装置を適用する場合について説明する。
242 第1の導電膜
242a 第1の導電層
242b 第1の導電層
243 絶縁膜
243a 絶縁層
243b 絶縁層
243c 絶縁層
243d 絶縁層
244 酸化物半導体層
245 第2の導電膜
245a 第2の導電層
245b 第2の導電層
246 ゲート絶縁層
248 ゲート電極
252 絶縁膜
252a サイドウォール絶縁層
252b サイドウォール絶縁層
252c サイドウォール絶縁層
252d サイドウォール絶縁層
280 トランジスタ
300 トランジスタ
310 トランジスタ
320 容量素子
400 メモリセル
601 筐体
602 筐体
603 表示部
604 キーボード
611 本体
612 スタイラス
613 表示部
614 操作ボタン
615 外部インターフェイス
620 電子書籍
621 筐体
623 筐体
625 表示部
627 表示部
631 電源
633 操作キー
635 スピーカー
637 軸部
640 筐体
641 筐体
642 表示パネル
643 スピーカー
644 マイクロフォン
646 ポインティングデバイス
647 カメラ用レンズ
648 外部接続端子
649 太陽電池セル
650 外部メモリスロット
661 本体
663 接眼部
664 操作スイッチ
665 表示部
666 バッテリー
667 表示部
670 テレビジョン装置
671 筐体
673 表示部
675 スタンド
680 リモコン操作機
Claims (6)
- ソース電極及びドレイン電極と、
前記ソース電極上及び前記ドレイン電極上の酸化物半導体層と、
前記酸化物半導体層と重なるゲート電極と、
前記酸化物半導体層と前記ゲート電極との間に設けられたゲート絶縁層と、を有し、
前記ソース電極または前記ドレイン電極は、第1の導電層と、第2の導電層と、を有し、
前記第2の導電層は、前記ゲート電極と重なる領域であって、かつ、前記第1の導電層の端面よりチャネル長方向に伸長した領域を有し、
前記伸長した領域において、前記第2の導電層は前記酸化物半導体層と接し、
前記第2の導電層の前記伸長した領域の上に、前記伸長した領域のチャネル長方向の長さより小さいチャネル長方向の長さの底面の有するサイドウォール絶縁層を有する半導体装置。 - 請求項1において、
前記第1の導電層および前記第2の導電層の断面形状はテーパー形状である半導体装置。 - 請求項1または請求項2において、
前記第2の導電層は、金属窒化物を含む半導体装置。 - 請求項1乃至請求項3のいずれか一において、
前記第2の導電層の膜厚は5nm以上15nm以下である半導体装置。 - 請求項1乃至請求項4のいずれか一において、
前記ソース電極または前記ドレイン電極と、前記酸化物半導体層との間に、絶縁層を有する半導体装置。 - 請求項1乃至請求項5のいずれか一に記載の半導体装置を有する電子機器であって、
前記電子機器は、テレビジョン装置、携帯電話機、携帯情報端末、デジタルカメラ、コンピュータ、及び電子書籍のグループから選ばれることを特徴とする電子機器。
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