JP2013211537A - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP2013211537A JP2013211537A JP2013035320A JP2013035320A JP2013211537A JP 2013211537 A JP2013211537 A JP 2013211537A JP 2013035320 A JP2013035320 A JP 2013035320A JP 2013035320 A JP2013035320 A JP 2013035320A JP 2013211537 A JP2013211537 A JP 2013211537A
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Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B12/00—Dynamic random access memory [DRAM] devices
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- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1203—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body the substrate comprising an insulating body on a semiconductor body, e.g. SOI
- H01L27/1207—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body the substrate comprising an insulating body on a semiconductor body, e.g. SOI combined with devices in contact with the semiconductor body, i.e. bulk/SOI hybrid circuits
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body
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- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body
- H01L27/06—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration
- H01L27/0688—Integrated circuits having a three-dimensional layout
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- 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
- H01L29/423—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
- H01L29/42312—Gate electrodes for field effect devices
- H01L29/42316—Gate electrodes for field effect devices for field-effect transistors
- H01L29/4232—Gate electrodes for field effect devices for field-effect transistors with insulated gate
- H01L29/42384—Gate electrodes for field effect devices for field-effect transistors with insulated gate for thin film field effect transistors, e.g. characterised by the thickness or the shape of the insulator or the dimensions, the shape or the lay-out of the conductor
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- 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
- H01L29/7827—Vertical transistors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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Abstract
【解決手段】第1のトランジスタと、第2のトランジスタと、1つの容量を有する構成とする。第2のトランジスタを介して容量に電荷を蓄積することでデータを書き込み、当該第2のトランジスタをオフ状態とすることでデータを保持する。また、第2のトランジスタと容量との間の保持ノードがゲートに接続された第1のトランジスタにより、データを破壊することなく読み出しを行う。さらに、第2のトランジスタと容量とを、第1のトランジスタ上に重ねて設け、第2のトランジスタの一方の電極と、容量の一方の電極とを、第1のトランジスタのゲートと電気的に接続する構成とする。
【選択図】図1
Description
本実施の形態では、本発明の一態様の半導体装置の一例として、記憶装置の構成例について、図面を参照して説明する。
本実施の形態では、本発明の一態様の半導体装置の例として、記憶装置の他の構成例について、図面を参照して説明する。なお、上記実施の形態と重複する部分については、説明を省略するか簡略化して説明する。
図3(A)は、本実施の形態で例示する記憶装置の主要部における回路図である。
上記構成例では、容量を構成する誘電層として、縦型のトランジスタの半導体層と同一の層を用いたが(すなわち、前記誘電層と前記半導体層は同一の層として存在する)、以下では、誘電層として絶縁材料の薄膜を用いた場合について説明する。
以下では、上記構成例で例示した記憶装置を作製する方法の一例について図面を参照して説明する。なお、本作製工程例では一部を除いて、概略を示すにとどめる。詳細は、公知の半導体集積回路作製技術を参照すればよい。
以下では、図5に示した、容量の誘電層として絶縁材料の薄膜を用いた記憶装置を作製する方法の一例について図面を参照して説明する。なお、以下では、上記作製工程例と重複する部分については説明を省略する。
本実施の形態では、本発明の一態様の半導体装置の一例として、上記実施の形態とは異なる記憶装置の構成例について、図面を参照して説明する。なお、以下では上記実施の形態と重複する部分については、説明を省略するか、簡略化して説明する。
本実施の形態では、本発明の一態様の半導体装置の一例として、上記実施の形態とは異なる記憶装置の構成例について、図面を参照して説明する。なお以下では、上記実施の形態と重複する部分については、説明を省略するか、簡略化して説明する。
本構成例で例示する記憶装置の上面図は図3(B)が援用され、図3(B)の切断線A−A’、切断線B−B’で切断した断面概略図が図13に相当する。
また、実施の形態3で例示した、トランジスタ101に縦型のトランジスタを適用した場合においても、上記構成例と同様に複数のメモリ層を積層することや下層に駆動回路を設けることが可能である。
上記実施の形態で例示した半導体層125に適用可能な酸化物半導体として、結晶性を有する半導体膜を用いると、トランジスタの電気特性を向上できる。好ましくは、半導体膜としてCAAC−OS(C Axis Aligned Crystalline Oxide Semiconductor)膜を用いることが好ましい。以下では、CAAC−OS膜が適用された半導体装置について説明する。
本実施の形態では、半導体装置の一例として、上記実施の形態に開示した記憶装置を少なくとも一部に用いたCPU(Central Processing Unit)について説明する。
本明細書に開示する記憶装置や半導体装置は、さまざまな電子機器(遊技機も含む)に適用することができる。電子機器としては、テレビ、モニタ等の表示装置、照明装置、デスクトップ型或いはノート型のパーソナルコンピュータ、ワードプロセッサ、DVD(Digital Versatile Disc)などの記録媒体に記憶された静止画又は動画を再生する画像再生装置、ポータブルCDプレーヤ、ラジオ、テープレコーダ、ヘッドホンステレオ、ステレオ、コードレス電話子機、トランシーバ、携帯無線機、携帯電話、自動車電話、携帯型ゲーム機、電卓、携帯情報端末、電子手帳、電子書籍、電子翻訳機、音声入力機器、ビデオカメラ、デジタルスチルカメラ、電気シェーバ、電子レンジ等の高周波加熱装置、電気炊飯器、電気洗濯機、電気掃除機、エアコンディショナーなどの空調設備、食器洗い器、食器乾燥器、衣類乾燥器、布団乾燥器、電気冷蔵庫、電気冷凍庫、電気冷凍冷蔵庫、DNA保存用冷凍庫、煙感知器、放射線測定器、透析装置等の医療機器、などが挙げられる。さらに、誘導灯、信号機、ベルトコンベア、エレベータ、エスカレータ、産業用ロボット、電力貯蔵システム等の産業機器も挙げられる。また、石油を用いたエンジンや、非水系二次電池からの電力を用いて電動機により推進する移動体なども、電子機器の範疇に含まれるものとする。上記移動体として、例えば、電気自動車(EV)、内燃機関と電動機を併せ持ったハイブリッド車(HEV)、プラグインハイブリッド車(PHEV)、これらのタイヤ車輪を無限軌道に変えた装軌車両、電動アシスト自転車を含む原動機付自転車、自動二輪車、電動車椅子、ゴルフ用カート、小型又は大型船舶、潜水艦、ヘリコプター、航空機、ロケット、人工衛星、宇宙探査機や惑星探査機、宇宙船が挙げられる。これらの電子機器の具体例を図17及び図18に示す。
101a トランジスタ
101b トランジスタ
102 トランジスタ
102a トランジスタ
102b トランジスタ
103 容量
103a 容量
103b 容量
110a 記憶素子
110b 記憶素子
111 ゲート電極層
111a ゲート電極層
111b ゲート電極層
112 第1の電極層
112a 第1の電極層
112b 第1の電極層
113 第2の電極層
114 ゲート絶縁層
115 半導体層
121 ゲート電極層
122 電極層
124 ゲート絶縁層
125 半導体層
132 電極層
134 誘電層
201 配線層
202 配線層
203 配線層
203a 配線層
203b 配線層
204 配線層
211 素子分離層
212a 絶縁層
212b 絶縁層
212c 絶縁層
212d 絶縁層
212e 絶縁層
212f 絶縁層
212g 絶縁層
212h 絶縁層
212i 絶縁層
213a 接続電極層
213b 接続電極層
213c 接続電極層
250 メモリ層
250a メモリ層
250b メモリ層
251a 層間絶縁層
251b 層間絶縁層
260 駆動回路部
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
3021 本体
3022 固定部
3023 表示部
3024 操作ボタン
3025 外部接続ポート
8000 テレビジョン装置
8001 筐体
8002 表示部
8003 スピーカ部
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
9201 本体
9202 筐体
9203 表示部
9204 キーボード
9205 外部接続ポート
9206 ポインティングデバイス
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 (9)
- 第1のトランジスタと、
前記第1のトランジスタにそれぞれ重ねて設けられた第2のトランジスタと、容量と、を備え、
前記第1のトランジスタは、
第1の半導体層と、
前記第1の半導体層上に接する第1の絶縁層と、
前記第1の絶縁層上に接し、前記第1の半導体層と重なる第1の電極層と、を有し、
前記第2のトランジスタは、
前記第1の電極層上に重ねて設けられ、当該第1の電極層と電気的に接続する第2の半導体層と、
前記第2の半導体層の側面に接する第2の絶縁層と、
前記第2の絶縁層と接し、前記第2の半導体層の前記側面の少なくとも一部を覆う第2の電極層と、
前記第2の半導体層上に設けられ、当該第2の半導体層と電気的に接続する第3の電極層と、を有し、
前記容量は、
前記第1の電極層上に重なる第4の電極層と、
前記第1の電極層と前記第4の電極層との間に誘電層と、を有する、
半導体装置。 - 請求項1に記載の半導体装置において、
前記第1の半導体層は、単結晶シリコンで構成される、半導体装置。 - 第1のトランジスタと、
前記第1のトランジスタにそれぞれ重ねて設けられた第2のトランジスタと、容量と、を備え、
前記第1のトランジスタは、
第5の電極層と、
前記第5の電極層上に重ねて設けられ、当該第5の電極層と電気的に接続する第1の半導体層と、
前記第1の半導体層の側面に接する第1の絶縁層と、
前記第1の絶縁層と接し、前記第1の半導体層の前記側面の少なくとも一部を覆う第1の電極層と、
前記第1の半導体層上に設けられ、当該第1の半導体層と電気的に接続する第6の電極層と、を有し、
前記第2のトランジスタは、
前記第1の電極層上に重ねて設けられ、当該第1の電極層と電気的に接続する第2の半導体層と、
前記第2の半導体層の側面に接する第2の絶縁層と、
前記第2の絶縁層と接し、前記第2の半導体層の前記側面の少なくとも一部を覆う第2の電極層と、
前記第2の半導体層上に設けられ、当該第2の半導体層と電気的に接続する第3の電極層と、を有し、
前記容量は、
前記第1の電極層上に重なる第4の電極層と、
前記第1の電極層と前記第4の電極層との間に誘電層と、を有する、
半導体装置。 - 請求項1乃至請求項3のいずれか一に記載の半導体装置において、
前記第2の半導体層は、シリコンよりもバンドギャップの広い半導体を含む、
半導体装置。 - 請求項4に記載の半導体装置において、
前記半導体は、酸化物半導体である、半導体装置。 - 請求項5に記載の半導体装置において、
前記酸化物半導体は、In、Ga、及びZnを含む、半導体装置。 - 請求項4乃至請求項6のいずれか一に記載の半導体装置において、
前記誘電層は、前記第2の半導体層と同一の膜から構成される、半導体装置。 - 請求項1乃至請求項7のいずれか一に記載の半導体装置において、
前記第1のトランジスタよりも下方に、駆動回路を備える、半導体装置。 - 請求項1乃至請求項8のいずれか一に記載の半導体装置において、
前記第1のトランジスタと、前記第2のトランジスタと、前記容量を備える半導体装置の層が、複数積層された、半導体装置。
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