JP6796411B2 - 半導体装置の作製方法 - Google Patents
半導体装置の作製方法 Download PDFInfo
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- JP6796411B2 JP6796411B2 JP2016129091A JP2016129091A JP6796411B2 JP 6796411 B2 JP6796411 B2 JP 6796411B2 JP 2016129091 A JP2016129091 A JP 2016129091A JP 2016129091 A JP2016129091 A JP 2016129091A JP 6796411 B2 JP6796411 B2 JP 6796411B2
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Classifications
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- H01L21/76801—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
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- H01L21/76826—Modification of the material of dielectric layers, e.g. grading, after-treatment to improve the stability of the layers, to increase their density etc. by contacting the layer with gases, liquids or plasmas
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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
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- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66742—Thin film unipolar transistors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
- H01L29/78645—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with multiple gate
- H01L29/78648—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with multiple gate arranged on opposing sides of the channel
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
- H01L29/78651—Silicon transistors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
- H01L29/78696—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
Description
本発明の一態様は、半導体と、第1の絶縁体と、第2の絶縁体と、第1の導電体と、開口部と、を有し、第1の絶縁体は、半導体上に配置され、開口部は、半導体の一部と重なる位置に、第1の絶縁体を貫通して配置され、第2の絶縁体は、開口部の側面および底面と接する領域を有し、第1の導電体は、第2の絶縁体を介して半導体と重なって配置される半導体装置の作製方法であって、半導体上に配置された第3の絶縁体上に第1の層を形成し、第1の層上に第2の層を形成し、第2の層上にエッチングマスクを形成し、エッチングマスクを用いて、第1の層が露出するまで第2の層をエッチングすることで第3の層を形成し、第3の層の上面および側面に選択成長層を形成し、第3の層および選択成長層を用いて、第3の絶縁体が露出するまで第1の層をエッチングすることで第4の層を形成し、第3の層、選択成長層および第4の層を用いて、半導体が露出するまで第3の絶縁体をエッチングすることで第1の絶縁体を形成する半導体装置の作製方法である。
本発明の一態様は、半導体と、第1の絶縁体と、第2の絶縁体と、第1の導電体と、第2の導電体と、第3の導電体と、開口部と、を有し、第1の絶縁体は、半導体上に配置され、開口部は、半導体の一部と重なる位置に、第1の絶縁体を貫通して配置され、第2の絶縁体は、開口部の側面および底面と接する領域を有し、第1の導電体は、第2の絶縁体を介して半導体と重なって配置され、第2の導電体および第3の導電体は、それぞれ半導体と第1の絶縁体との間に配置される半導体装置の作製方法であって、半導体上に配置された第4の導電体と、第4の導電体上に配置された第3の絶縁体上に第1の層を形成し、第1の層上に第2の層を形成し、第2の層上にエッチングマスクを形成し、エッチングマスクを用いて、第1の層が露出するまで第2の層をエッチングすることで第3の層を形成し、第3の層の上面および側面に選択成長層を形成し、第3の層および選択成長層を用いて、第3の絶縁体が露出するまで第1の層をエッチングすることで第4の層を形成し、第3の層、選択成長層および第4の層を用いて、半導体が露出するまで第3の絶縁体および第4の導電体をエッチングすることで第1の絶縁体、第2の導電体および第3の導電体を形成する半導体装置の作製方法である。
本発明の一態様は、(1)または(2)において、第2の層がシリコンを有する半導体装置の作製方法である。
本発明の一態様は、半導体と、第1の絶縁体と、第2の絶縁体と、第1の導電体と、第2の導電体と、第3の導電体と、開口部と、を有し、第1の絶縁体は、半導体上に配置され、開口部は、半導体の一部と重なる位置に、第1の絶縁体を貫通して配置され、第2の絶縁体は、開口部の側面および底面と接する領域を有し、第1の導電体は、第2の絶縁体を介して半導体と重なって配置され、第2の導電体および第3の導電体は、それぞれ半導体と第1の絶縁体との間に配置される半導体装置の作製方法であって、半導体上に配置された第4の導電体と、第4の導電体上に配置された第3の絶縁体上にエッチングマスクを形成し、エッチングマスクを用いて、第4の導電体が露出するまで第3の絶縁体をエッチングすることで第5の絶縁体を形成し、第5の絶縁体の上面および側面に選択成長層を形成し、第5の絶縁体および選択成長層を用いて、半導体が露出するまで第4の導電体をエッチングすることで第2の導電体および第3の導電体を形成する半導体装置の作製方法である。
本発明の一態様は、(4)において、第3の絶縁体がシリコンを有する半導体装置の作製方法である。
本発明の一態様は、半導体と、第1の絶縁体と、第2の絶縁体と、第1の導電体と、第2の導電体と、第3の導電体と、開口部と、を有し、第1の絶縁体は、半導体上に配置され、開口部は、半導体の一部と重なる位置に、第1の絶縁体を貫通して配置され、第2の絶縁体は、開口部の側面および底面と接する領域を有し、第1の導電体は、第2の絶縁体を介して半導体と重なって配置され、第2の導電体および第3の導電体は、それぞれ半導体と第1の絶縁体との間に配置される半導体装置の作製方法であって、半導体上に配置された第4の導電体と、第4の導電体上に配置された第3の絶縁体上に第1の層を形成し、第1の層上の一部に第2の層を形成し、第1の層および第2の層をシランガスに曝すことで、第1の層にはシランガスに曝された第1の領域と曝されなかった第2の領域とが形成され、第2の層をエッチングし、第1の領域上に選択成長層を形成し、選択成長層を用いて第1の層から第2の領域をエッチングすることで第3の層を形成し、第3の層および選択成長層を用いて、半導体が露出するまで第3の絶縁体および第4の導電体をエッチングすることで第1の絶縁体、第2の導電体および第3の導電体を形成する半導体装置の作製方法である。
本発明の一態様は、(1)乃至(6)のいずれか一において、選択成長層は、シリコンおよびハロゲンを有する原料ガスを用いて形成する半導体装置の作製方法である。
本発明の一態様は、(1)乃至(7)のいずれか一において、半導体が酸化物半導体を有する半導体装置の作製方法である。
本発明の一態様は、(1)乃至(7)のいずれか一において、半導体がシリコンを有する半導体装置の作製方法である。
以下では、図1乃至図10を用いて、本発明の一態様に係る半導体装置の有するトランジスタの作製方法について説明する。
以下では、In−M−Zn酸化物の組成について説明する。なお、元素Mは、アルミニウム、ガリウム、イットリウムまたはスズなどとする。そのほかの元素Mに適用可能な元素としては、ホウ素、シリコン、チタン、鉄、ニッケル、ゲルマニウム、ジルコニウム、モリブデン、ランタン、セリウム、ネオジム、ハフニウム、タンタル、タングステンなどがある。
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。
以下では、図13乃至図19を用いて、本発明の一態様に係る半導体装置の有するトランジスタの作製方法について説明する。なお、図1乃至図10を用いて説明したトランジスタの作製方法を参酌することができる。
以下では、図20乃至図28を用いて、本発明の一態様に係る半導体装置の有するトランジスタの作製方法について説明する。なお、図1乃至図10、または図13乃至図19を用いて説明したトランジスタの作製方法を参酌することができる。
以下では、図29乃至図36を用いて、本発明の一態様に係る半導体装置の有するトランジスタの作製方法について説明する。なお、図1乃至図10、図13乃至図19、または図20乃至図28を用いて説明したトランジスタの作製方法を参酌することができる。
以下では、本発明の一態様に係る半導体装置の回路の一例について説明する。
図37(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。
図38は、図37(A)に対応する半導体装置の断面図である。図38に示す半導体装置は、トランジスタ2200と、トランジスタ2100と、を有する。また、トランジスタ2100は、トランジスタ2200の上方に配置する。なお、トランジスタ2100としては、上述したトランジスタなどを用いればよい。よって、トランジスタ2100については、適宜上述したトランジスタについての記載を参酌する。なお、図38(A)、図38(B)および図38(C)は、それぞれ異なる場所の断面図である。
また図37(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41に示す。
図42は、図41(A)に対応する半導体装置の断面図である。図42に示す半導体装置は、トランジスタ3200と、トランジスタ3300と、容量素子3400と、を有する。また、トランジスタ3300および容量素子3400は、トランジスタ3200の上方に配置する。なお、トランジスタ3300としては、上述したトランジスタ2100についての記載を参照する。また、トランジスタ3200としては、図38に示したトランジスタ2200についての記載を参照する。なお、図38では、トランジスタ2200がpチャネル型トランジスタである場合について説明したが、トランジスタ3200がnチャネル型トランジスタであっても構わない。なお、図42(A)、図42(B)および図42(C)は、それぞれ異なる場所の断面図である。
図41(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41(A)に示した半導体装置と異なる。この場合も図41(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。
以下では、本発明の一態様に係る撮像装置について説明する。
撮像装置2000が有する1つの画素2011を複数の副画素2012で構成し、それぞれの副画素2012に特定の波長帯域の光を透過するフィルタ(カラーフィルタ)を組み合わせることで、カラー画像表示を実現するための情報を取得することができる。
以下では、シリコンを用いたトランジスタと、酸化物半導体を用いたトランジスタと、を用いて画素を構成する一例について説明する。
また本発明の一態様は、FPGA(Field Programmable Gate Array)などのLSIにも適用可能である。
以下では、上述した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について説明する。
以下では、本発明の一態様に係る表示装置について、図54および図56を用いて説明する。
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57に示す。
以下では、本発明の一態様に係る電子機器の一例である表示領域または発光領域に曲面を有する電子機器について、図58を参照しながら説明する。なお、ここでは、電子機器の一例として、情報機器、特に携帯性を有する情報機器(携帯機器)について説明する。携帯性を有する情報機器としては、例えば、携帯電話機(ファブレット、スマートフォン(スマホ))、タブレット端末(スレートPC)なども含まれる。
携帯機器1300Aは、例えば電話、電子メール作成閲覧、手帳または情報閲覧などの機能から選ばれた一つまたは複数の機能を有する。
401 絶縁体
402 絶縁体
402a 絶縁体
402b 絶縁体
402c 絶縁体
404 導電体
405 導電体
406a 絶縁体
406b 半導体
406c 絶縁体
408 絶縁体
410 絶縁体
411 絶縁体
412 絶縁体
413 導電体
416 導電体
416a 導電体
416b 導電体
417a 領域
417b 領域
420 層
421 領域
422 絶縁体
423 層
424 層
425 層
426 層
428 層
429 層
430 層
432 層
434 導電体
436c 絶縁体
442 絶縁体
450 半導体基板
452 絶縁体
454 導電体
456 領域
460 領域
462 絶縁体
464 絶縁体
466 絶縁体
468 絶縁体
470 絶縁体
472a 領域
472b 領域
474a 導電体
474b 導電体
474c 導電体
476a 導電体
476b 導電体
478a 導電体
478b 導電体
478c 導電体
480a 導電体
480b 導電体
480c 導電体
482 絶縁体
490 トランジスタ
492 絶縁体
494 絶縁体
496a 導電体
496b 導電体
496c 導電体
496d 導電体
498a 導電体
498b 導電体
498c 導電体
498d 導電体
700 基板
702 絶縁体
704 導電体
706a 絶縁体
706b 半導体
706c 絶縁体
707a 領域
707b 領域
707c 電極
712 絶縁体
713a 導電体
713b 導電体
718 絶縁体
719 発光素子
731 端子
732 FPC
733a 配線
734 シール材
735 駆動回路
736 駆動回路
737 画素
741 トランジスタ
742 容量素子
743 スイッチ素子
744 信号線
750 基板
751 トランジスタ
752 容量素子
753 液晶素子
754 走査線
755 信号線
781 導電体
782 発光層
783 導電体
784 隔壁
791 導電体
792 絶縁体
793 液晶層
794 絶縁体
795 スペーサ
796 導電体
797 基板
801 半導体基板
802 基板
803 絶縁体
804 絶縁体
805 絶縁体
806 接着層
807 フィルタ
808 フィルタ
809 フィルタ
811 絶縁体
812 絶縁体
813 絶縁体
814 絶縁体
815 絶縁体
816 絶縁体
817 絶縁体
818 絶縁体
819 絶縁体
820 絶縁体
821 絶縁体
831 導電体
832 導電体
833 導電体
834 導電体
835 導電体
836 導電体
837 導電体
838 導電体
839 導電体
840 導電体
841 導電体
842 導電体
843 導電体
844 導電体
845 導電体
846 導電体
847 導電体
848 導電体
849 導電体
850 導電体
851 導電体
852 導電体
853 導電体
854 導電体
855 導電体
856 導電体
857 導電体
858 導電体
859 導電体
860 導電体
861 導電体
862 導電体
871 絶縁体
872 導電体
873 絶縁体
874 絶縁体
875 領域
876 領域
877 絶縁体
878 絶縁体
881 絶縁体
882 導電体
883 絶縁体
884 絶縁体
885 領域
886 領域
887 層
888 層
891 トランジスタ
892 トランジスタ
893 発光層
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
1300A 携帯機器
1300B 携帯機器
1300C 携帯機器
1310 筐体
1311 領域
1312 領域
1521 ルーティングスイッチエレメント
1522 ロジックエレメント
1523 コンフィギュレーションメモリ
1524 ルックアップテーブル
1525 レジスタ
1526 セレクタ
1527 コンフィギュレーションメモリ
2000 撮像装置
2001 スイッチ
2002 スイッチ
2003 スイッチ
2010 画素部
2011 画素
2012 副画素
2012B 副画素
2012G 副画素
2012R 副画素
2020 光電変換素子
2030 画素回路
2031 配線
2047 配線
2048 配線
2049 配線
2050 配線
2053 配線
2054 フィルタ
2054B フィルタ
2054G フィルタ
2054R フィルタ
2055 レンズ
2056 光
2057 配線
2060 周辺回路
2070 周辺回路
2080 周辺回路
2090 周辺回路
2091 光源
2100 トランジスタ
2200 トランジスタ
2300 シリコン基板
2310 層
2320 層
2330 層
2340 層
2351 トランジスタ
2352 トランジスタ
2353 トランジスタ
2354 フィルタ
2355 レンズ
2360 フォトダイオード
2361 アノード
2362 カソード
2363 低抵抗領域
2370 プラグ
2371 配線
2372 配線
2373 配線
2402 絶縁体
2408 絶縁体
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
Claims (7)
- 半導体上に第1の絶縁体を形成し、
前記第1の絶縁体上に第1の層を形成し、
前記第1の層上に第2の層を形成し、
前記第1の層が露出するまで前記第2の層をエッチングすることで第3の層を形成し、
前記第3の層の表面に第4の層を形成し、
前記第3の層および前記第4の層を用いて、前記第1の絶縁体が露出するまで前記第1の層をエッチングすることで第5の層を形成し、
前記第3の層、前記第4の層および前記第5の層を用いて、前記半導体が露出するまで前記第1の絶縁体をエッチングすることで第2の絶縁体を形成し、
前記第2の絶縁体の側面と接する領域、および前記半導体の上面と接する領域を有する第3の絶縁体を形成し、
前記第3の絶縁体を介して、前記半導体と重なる領域を有する第1の導電体を形成し、
前記第2の層は、シリコンを有し、
前記第1の層は、前記第2の層と異なる材料を有する半導体装置の作製方法。 - 半導体上に第1の導電体を形成し、
前記第1の導電体上に第1の絶縁体を形成し、
前記第1の絶縁体上に第1の層を形成し、
前記第1の層上に第2の層を形成し、
前記第1の層が露出するまで前記第2の層をエッチングすることで第3の層を形成し、
前記第3の層の表面に第4の層を形成し、
前記第3の層および前記第4の層を用いて、前記第1の絶縁体が露出するまで前記第1の層をエッチングすることで第5の層を形成し、
前記第3の層、前記第4の層および前記第5の層を用いて、前記半導体が露出するまで前記第1の絶縁体および前記第1の導電体をエッチングすることで第2の絶縁体、第2の導電体および第3の導電体を形成し、
前記第2の絶縁体の側面と接する領域、前記第2の導電体の側面と接する領域、前記第3の導電体の側面と接する領域、および前記半導体の上面と接する領域を有する第3の絶縁体を形成し、
前記第3の絶縁体を介して、前記半導体と重なる領域を有する第4の導電体を形成し、
前記第2の層は、シリコンを有し、
前記第1の層は、前記第2の層と異なる材料を有する半導体装置の作製方法。 - 請求項1において、
前記第1の導電体は、前記半導体のチャネル幅方向において、前記第3の絶縁体を介して、前記半導体の側面と面する領域を有する半導体装置の作製方法。 - 請求項2において、
前記第4の導電体は、前記半導体のチャネル幅方向において、前記第3の絶縁体を介して、前記半導体の側面と面する領域を有する半導体装置の作製方法。 - 請求項1乃至請求項4のいずれか一において、
前記第4の層は、シリコンおよびハロゲンを有する原料ガスを用いて形成する半導体装置の作製方法。 - 請求項1乃至請求項4のいずれか一において、
前記第4の層は、前記第3の層の表面を酸化または窒化することで形成する半導体装置の作製方法。 - 請求項1乃至請求項6のいずれか一において、
前記半導体は、酸化物半導体を有する半導体装置の作製方法。
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US10236389B2 (en) | 2019-03-19 |
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US9917209B2 (en) | 2018-03-13 |
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