JP6453002B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
- Publication number
- JP6453002B2 JP6453002B2 JP2014188406A JP2014188406A JP6453002B2 JP 6453002 B2 JP6453002 B2 JP 6453002B2 JP 2014188406 A JP2014188406 A JP 2014188406A JP 2014188406 A JP2014188406 A JP 2014188406A JP 6453002 B2 JP6453002 B2 JP 6453002B2
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- Prior art keywords
- oxide semiconductor
- film
- semiconductor film
- transistor
- insulating film
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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
-
- 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
- H01L27/12—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
- H01L27/1214—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 comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/1222—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 comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition, shape or crystalline structure of the active layer
- H01L27/1225—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 comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition, shape or crystalline structure of the active layer with semiconductor materials not belonging to the group IV of the periodic table, e.g. InGaZnO
-
- 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
- H01L27/12—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
- H01L27/1214—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 comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/1255—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 comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs integrated with passive devices, e.g. auxiliary capacitors
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thin Film Transistor (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
- Semiconductor Memories (AREA)
- Physical Vapour Deposition (AREA)
- Chemical Vapour Deposition (AREA)
- Formation Of Insulating Films (AREA)
Description
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積層構造について図2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について図面を用いて説明する。
図3(A)および図3(B)は、本発明の一態様のトランジスタの上面図および断面図である。図3(A)は上面図であり、図3(B)は、図3(A)に示す一点鎖線A1−A2、および一点鎖線A3−A4に対応する断面図である。なお、図3(A)の上面図では、図の明瞭化のために一部の要素を省いて図示している。また、図3(B)の酸化物半導体層404の拡大図を図3(C)に示す。
また、図6に示すトランジスタのように下地絶縁膜402と酸化物半導体層404の間に絶縁膜401を配置してもよい。絶縁膜401としては、ゲート絶縁膜408aに用いる絶縁膜を用いればよい。なお、そのほかの構成については、図3に示したトランジスタについての記載を参照する。
また、図7に示すトランジスタのように基板400と下地絶縁膜402の間に導電膜420を配置してもよい。導電膜420を第2のゲート電極として用いることで、さらなるオン電流の増加や、しきい値電圧の制御を行うことができる。オン電流を増加させるには、たとえば、ゲート電極410と導電膜420を同電位とし、デュアルゲートトランジスタとして駆動させればよい。なお、ゲート電極410と導電膜420を電気的に接続して同電位としてもよい。また、しきい値電圧の制御を行うには、ゲート電極410と導電膜420に異なる定電位を供給すればよい。
図8(A)および図8(B)は、トランジスタの上面図および断面図である。図8(A)は上面図であり、図8(B)は、図8(A)に示す一点鎖線A1−A2、および一点鎖線A3−A4に対応する断面図である。なお、図8(A)の上面図では、図の明瞭化のために一部の要素を省いて図示している。
図9(A)および図9(B)は、トランジスタの上面図および断面図である。図9(A)は上面図であり、図9(B)は、図9(A)に示す一点鎖線A1−A2、および一点鎖線A3−A4に対応する断面図である。なお、図9(A)の上面図では、図の明瞭化のために一部の要素を省いて図示している。
トランジスタ構造1乃至トランジスタ構造3に記載のトランジスタ構造はすべてトップゲート構造であったが、ボトムゲート構造でも構わない。図10(A)および図10(B)は、ボトムゲート構造のトランジスタの上面図および断面図である。図10(A)は上面図であり、図10(B)は、図10(A)に示す一点鎖線A1−A2、および一点鎖線A3−A4に対応する断面図である。なお、図10(A)の上面図では、図の明瞭化のために一部の要素を省いて図示している。
本実施の形態では、本発明の一態様のトランジスタを利用した回路の一例について図面を参照して説明する。
図12(A)に本発明の一態様の半導体装置の断面図を示す。図12(A)に示す半導体装置は、下部に第1の半導体材料を用いたトランジスタ2200を有し、上部に第2の半導体材料を用いたトランジスタ2100を有している。図12(A)では、第2の半導体材料を用いたトランジスタ2100として、先の実施の形態で例示したトランジスタを適用した例を示している。
上記構成において、トランジスタ2100やトランジスタ2200の電極の接続構成を異ならせることにより、様々な回路を構成することができる。以下では、本発明の一態様の半導体装置を用いることにより実現できる回路構成の例を説明する。
図12(B)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、且つそれぞれのゲートを接続した、いわゆるCMOS回路の構成を示している。
また、図12(C)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13に示す。
本実施の形態では、先の実施の形態で説明したトランジスタ、または記憶装置を含むRFタグについて、図14を参照して説明する。
本実施の形態では、少なくとも実施の形態で説明したトランジスタを用いることができ、先の実施の形態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、本発明の一態様の表示装置の構成例について説明する。
図17(A)は、本発明の一態様の表示装置の上面図であり、図17(B)は、本発明の一態様の表示装置の画素に液晶素子を適用する場合に用いることができる画素回路を説明するための回路図である。また、図17(C)は、本発明の一態様の表示装置の画素に有機EL素子を適用する場合に用いることができる画素回路を説明するための回路図である。
また、画素の回路構成の一例を図17(B)に示す。ここでは、VA型液晶表示装置の画素に適用することができる画素回路を示す。
画素の回路構成の他の一例を図17(C)に示す。ここでは、有機EL素子を用いた表示装置の画素構造を示す。
本実施の形態では、本発明の一態様の半導体装置を適用した表示モジュールについて、図18を用いて説明を行う。
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、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19に示す。
本実施の形態では、本発明の一態様に係るRFデバイスの使用例について図20を用いながら説明する。RFデバイスの用途は広範にわたるが、例えば、紙幣、硬貨、有価証券類、無記名債券類、証書類(運転免許証や住民票等、図20(A)参照)、包装用容器類(包装紙やボトル等、図20(C)参照)、記録媒体(DVDやビデオテープ等、図20(B)参照)、乗り物類(自転車等、図20(D)参照)、身の回り品(鞄や眼鏡等)、食品類、植物類、動物類、人体、衣類、生活用品類、薬品や薬剤を含む医療品、または電子機器(液晶表示装置、EL表示装置、テレビジョン装置、または携帯電話)等の物品、若しくは各物品に取り付ける荷札(図20(E)、図20(F)参照)等に設けて使用することができる。
12 光学系
14 試料室
16 光学系
18 カメラ
20 観察室
22 フィルム室
24 電子
28 物質
32 蛍光板
104 酸化物半導体膜
108 ゲート絶縁膜
108a ゲート絶縁膜
108b ゲート絶縁膜
110 ゲート電極
400 基板
401 絶縁膜
402 下地絶縁膜
404 酸化物半導体層
404a 酸化物半導体膜
404b 酸化物半導体膜
404c 酸化物半導体膜
405 導電膜
406a ソース電極
406b ドレイン電極
408a ゲート絶縁膜
408b ゲート絶縁膜
410 ゲート電極
412 絶縁膜
413 絶縁膜
414 導電膜
418a 絶縁膜
418b 絶縁膜
420 導電膜
700 基板
701 画素部
702 走査線駆動回路
703 走査線駆動回路
704 信号線駆動回路
710 容量配線
712 ゲート配線
713 ゲート配線
714 ドレイン電極層
716 トランジスタ
717 トランジスタ
718 液晶素子
719 液晶素子
720 画素
721 スイッチング用トランジスタ
722 駆動用トランジスタ
723 容量素子
724 発光素子
725 信号線
726 走査線
727 電源線
728 共通電極
800 RFタグ
801 通信器
802 アンテナ
803 無線信号
804 アンテナ
805 整流回路
806 定電圧回路
807 復調回路
808 変調回路
809 論理回路
810 記憶回路
811 ROM
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
2201 絶縁膜
2202 配線
2203 プラグ
2204 絶縁膜
2205 配線
2206 配線
2207 絶縁膜
2208 絶縁膜
2211 半導体基板
2213 ゲート電極
2214 ゲート絶縁膜
3001 配線
3002 配線
3003 配線
3004 配線
3005 配線
3200 トランジスタ
3300 トランジスタ
3400 容量素子
4000 RFデバイス
8000 表示モジュール
8001 上部カバー
8002 下部カバー
8003 FPC
8004 タッチパネル
8005 FPC
8006 表示パネル
8007 バックライトユニット
8008 光源
8009 フレーム
8010 プリント基板
8011 バッテリー
Claims (5)
- 基板上の第1の酸化物半導体膜と、
前記第1の酸化物半導体膜上の第2の酸化物半導体膜と、
前記第1の酸化物半導体膜の側面と接する領域、前記第2の酸化物半導体膜の側面と接する領域、および前記第2の酸化物半導体膜の上面と接する領域を有する、ソース電極およびドレイン電極と、
前記第2の酸化物半導体膜上、前記ソース電極上、および前記ドレイン電極上に設けられ、且つ前記第1の酸化物半導体膜の側面と接する領域および前記第2の酸化物半導体膜の側面と接する領域を有する、第3の酸化物半導体膜と、
前記第3の酸化物半導体膜上の第1のゲート絶縁膜と、
前記第1のゲート絶縁膜上の第2のゲート絶縁膜と、
前記第2のゲート絶縁膜上面に接する領域を有し、且つ前記第2の酸化物半導体膜の上面に面する領域および前記第2の酸化物半導体膜の側面に面する領域を有するゲート電極と、を有し、
前記第1のゲート絶縁膜は、ハフニウムを含み、
前記第2のゲート絶縁膜は、シリコンを含むことを特徴とする半導体装置。 - 基板上の第1の酸化物半導体膜と、
前記第1の酸化物半導体膜上の第2の酸化物半導体膜と、
前記第2の酸化物半導体膜上の第3の酸化物半導体膜と、
前記第3の酸化物半導体膜上の第1のゲート絶縁膜と、
前記第1のゲート絶縁膜上の第2のゲート絶縁膜と、
前記第1の酸化物半導体膜の側面と接する領域、前記第2の酸化物半導体膜の側面と接する領域、および前記第3の酸化物半導体膜の側面と接する領域を有する、ソース電極およびドレイン電極と、
前記ソース電極上および前記ドレイン電極上の、前記第3の酸化物半導体膜と上面の高さの揃った絶縁膜と、
前記第2のゲート絶縁膜上面に接する領域を有し、且つ前記第2の酸化物半導体膜の上面に面する領域および前記第2の酸化物半導体膜の側面に面する領域を有するゲート電極と、を有し、
前記第1のゲート絶縁膜は、ハフニウムを含み、
前記第2のゲート絶縁膜は、シリコンを含む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のゲート絶縁膜は、酸化ハフニウムを含み、
前記第2のゲート絶縁膜は、酸化シリコンまたは窒化シリコンを含むことを特徴とする半導体装置。 - 請求項1乃至請求項3のいずれか一において、
前記第1の酸化物半導体膜および前記第3の酸化物半導体膜は、前記第2の酸化物半導体膜に含まれる金属元素を一種以上含むことを特徴とする半導体装置。 - 請求項1乃至請求項4のいずれか一において、
前記基板上に、凸部を有する下地絶縁膜を有し、
前記凸部上に前記第1の酸化物半導体膜が設けられていることを特徴とする半導体装置。
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US10600918B2 (en) | 2020-03-24 |
US20150084044A1 (en) | 2015-03-26 |
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US9397153B2 (en) | 2016-07-19 |
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