JP6397648B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP6397648B2 JP6397648B2 JP2014081528A JP2014081528A JP6397648B2 JP 6397648 B2 JP6397648 B2 JP 6397648B2 JP 2014081528 A JP2014081528 A JP 2014081528A JP 2014081528 A JP2014081528 A JP 2014081528A JP 6397648 B2 JP6397648 B2 JP 6397648B2
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- Prior art keywords
- oxide semiconductor
- semiconductor layer
- transistor
- oxide
- film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- H01L29/68—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
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- 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
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- 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
- H01L29/78693—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 the semiconducting oxide being amorphous
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- 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
- H01L29/78696—Thin film transistors, i.e. transistors with a channel being at least partly a thin film characterised by the structure of the channel, e.g. multichannel, transverse or longitudinal shape, length or width, doping structure, or the overlap or alignment between the channel and the gate, the source or the drain, or the contacting structure of the channel
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Description
本実施の形態では、本発明の一態様の半導体装置について図面を用いて説明する。
本実施の形態では、実施の形態1で説明した図1に示すトランジスタ100の作製方法について、図8および図9を用いて説明する。
本実施の形態では、本発明の一態様であるトランジスタを使用し、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、図面を用いて説明する。
本実施の形態では、本発明の一態様であるトランジスタを使用し、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について、実施の形態3に示した構成と異なる半導体装置の説明を行う。
本実施の形態では、少なくとも実施の形態1で説明したトランジスタを用いることができ、実施の形態3で説明した記憶装置を含むCPUについて説明する。
本実施の形態では、実施の形態1で説明したトランジスタ、実施の形態3、4で説明した記憶装置、または実施の形態5で説明したCPU等(DSP、カスタムLSI、PLD、RF−IDを含む)を用いることのできる電子機器の例について説明する。
101 トランジスタ
110 基板
120 下地絶縁膜
130 酸化物半導体層
131 第1の酸化物半導体層
132 第2の酸化物半導体層
133 第3の酸化物半導体層
135 境界
137 チャネル領域
138 チャネル領域
140 ソース電極層
150 ドレイン電極層
160 ゲート絶縁膜
170 ゲート電極層
172 導電膜
180 酸化物絶縁層
210 基板
220 下地絶縁膜
230 酸化物半導体層
260 ゲート絶縁膜
270 ゲート電極
331 第1の酸化物半導体膜
333 第3の酸化物半導体膜
360 絶縁膜
370 導電膜
400 領域
410 領域
700 記憶素子
701 回路
702 回路
703 スイッチ
704 スイッチ
706 論理素子
707 容量素子
708 容量素子
709 トランジスタ
710 トランジスタ
713 トランジスタ
714 トランジスタ
720 回路
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
3000 基板
3001 配線
3002 配線
3003 配線
3004 配線
3005 配線
3100 素子分離絶縁層
3150 絶縁層
3200 トランジスタ
3250 電極
3300 トランジスタ
3350 接続配線
3400 容量素子
4250 メモリセル
4300 トランジスタ
4400 容量素子
4500 配線
4600 配線
8000 テレビジョン装置
8001 筐体
8002 表示部
8003 スピーカ部
8004 CPU
8100 警報装置
8101 マイクロコンピュータ
8102 検出部
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 回路
9703 駆動装置
9704 処理装置
Claims (4)
- 絶縁表面上に設けられたトランジスタを有し、
前記トランジスタは、
第1の酸化物半導体層と、
前記第1の酸化物半導体層上の第2の酸化物半導体層と、
前記第2の酸化物半導体層上のソース電極層及びドレイン電極層と、
前記ソース電極層及び前記ドレイン電極層上の第3の酸化物半導体層と、
前記第3の酸化物半導体層上の第1の絶縁膜と、
前記第1の絶縁膜上のゲート電極層と、を有し、
前記第1の酸化物半導体層は、前記ソース電極層と接する領域と、前記ドレイン電極層と接する領域とを有し、
前記トランジスタのチャネル長方向の断面において、
前記第1の酸化物半導体層の端部の一方は、前記ソース電極層の端部の一方と一致し、
前記第1の酸化物半導体層の端部の他方は、前記ドレイン電極層の端部の一方と一致し、
前記第3の酸化物半導体層の端部の一方は、前記ソース電極層上に位置し、
前記第3の酸化物半導体層の端部の他方は、前記ドレイン電極層上に位置することを特徴とする半導体装置。 - 絶縁表面上に設けられたトランジスタを有し、
前記トランジスタは、
第1の酸化物半導体層と、
前記第1の酸化物半導体層上の第2の酸化物半導体層と、
前記第2の酸化物半導体層上のソース電極層及びドレイン電極層と、
前記ソース電極層及び前記ドレイン電極層上の第3の酸化物半導体層と、
前記第3の酸化物半導体層上の第1の絶縁膜と、
前記第1の絶縁膜上のゲート電極層と、を有し、
前記第1の酸化物半導体層は、前記ソース電極層と接する領域と、前記ドレイン電極層と接する領域とを有し、
前記トランジスタのチャネル長方向の断面において、
前記第1の酸化物半導体層の端部の一方は、前記ソース電極層の端部の一方と一致し、
前記第1の酸化物半導体層の端部の他方は、前記ドレイン電極層の端部の一方と一致し、
前記第3の酸化物半導体層の端部の一方は、前記ソース電極層上に位置し、且つ前記第1の絶縁膜の端部の一方と一致し、
前記第3の酸化物半導体層の端部の他方は、前記ドレイン電極層上に位置し、且つ前記第1の絶縁膜の端部の他方と一致することを特徴とする半導体装置。 - 請求項1又は2において、
前記第2の酸化物半導体層の全体が、前記第1の酸化物半導体層と重なることを特徴とする半導体装置。 - 請求項1乃至3のいずれか一において、
前記ゲート電極層上に接する第2の絶縁膜を有し、
前記第2の絶縁膜は、酸化アルミニウムを有することを特徴とする半導体装置。
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US20140306217A1 (en) | 2014-10-16 |
JP2020031229A (ja) | 2020-02-27 |
TW201448225A (zh) | 2014-12-16 |
JP6612944B2 (ja) | 2019-11-27 |
TWI620324B (zh) | 2018-04-01 |
JP2018186310A (ja) | 2018-11-22 |
KR20140123431A (ko) | 2014-10-22 |
JP2014225652A (ja) | 2014-12-04 |
JP6866455B2 (ja) | 2021-04-28 |
US9627545B2 (en) | 2017-04-18 |
KR102220002B1 (ko) | 2021-02-26 |
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