JP6650737B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP6650737B2 JP6650737B2 JP2015226511A JP2015226511A JP6650737B2 JP 6650737 B2 JP6650737 B2 JP 6650737B2 JP 2015226511 A JP2015226511 A JP 2015226511A JP 2015226511 A JP2015226511 A JP 2015226511A JP 6650737 B2 JP6650737 B2 JP 6650737B2
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- capacitor
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- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- VEALVRVVWBQVSL-UHFFFAOYSA-N strontium titanate Chemical compound [Sr+2].[O-][Ti]([O-])=O VEALVRVVWBQVSL-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
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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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- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
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- 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
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- 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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- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
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- 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
[構成例]
図1(A)に容量素子300の上面図の一例を示す。図1(B)は図1(A)に示す一点鎖線A−Bに対応する断面図である。
また、本実施の形態の応用例として、図2(A)及び(B)に示すように容量素子300を複数積層して用いることができる。図2(A)は並列接続、図2(B)は直列接続となるように接続されている。なお、図2では、2個の容量素子300を積層した場合を示しているが、必要に応じて、容量素子300を3個以上積層することも可能である。
また、本実施の形態の変形例として、図3に示すように容量素子300の第1の電極302の溝部内に、導電層302bを用いて凸部を設けてもよい。なお、凸部の形状は、適宜最適な形状を設計するとよい。例えば、縞(格子)状の他、島状であれば、四角錐台、多角錐台、円錐台、多角柱、円柱でもよい。また、起伏部は必ずしも整列して形成される必要はなく、不規則に形成されていてもよい。
以下では、図3で示した容量素子の作製方法の一例について、図4乃至図6を用いて説明する。
[構成例]
本発明の一態様である容量素子を使用した、半導体装置(記憶装置)の一例を図7に示す。なお、図7(B)は図7(A)を回路図で表したものである。
以下では、上記構成例で示した半導体装置の作製方法の一例について、図13乃至図15を用いて説明する。
また、本実施の形態の変形例として、図15に示すように容量素子300の位置を第2のトランジスタ200より上方に設けてもよい。具体的には、第1のトランジスタ100上に、第2のトランジスタ200を形成した後、容量素子300を形成すればよい。なお、配線250を介して、第1のトランジスタ100と第2のトランジスタ200を接続する。また、第2のトランジスタ200の電極204bを延在した配線に到達するように層間絶縁膜にコンタクトホールを形成する。そして、コンタクトホールに配線350を形成することにより、容量素子300、第1のトランジスタ100、及び第2のトランジスタ200を電気的に接続すればよい。
また、図16(A)及び図16(B)に示すように、第2のトランジスタ200のソース電極またはドレイン電極の一方と、容量素子300の第1の電極とを、同一の導電層により設ける構成としてもよい。従って、図中に示す電極204bは、第2のトランジスタ200のソース電極またはドレイン電極の一方、および容量素子300の第1の電極としての機能を有する。
本実施の形態では、本発明の一態様の半導体装置の半導体膜に好適に用いることのできる酸化物半導体について説明する。
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。
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半導体装置の構成の一例について図面を参照して説明する。
図22(A)に本発明の一態様の半導体装置の断面図を示す。図22(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。なお、一点鎖線より左側がトランジスタのチャネル長方向の断面、右側がチャネル幅方向の断面である。
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。
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25に示す。
本実施の形態では、上記実施の形態で例示したトランジスタ、または記憶装置を含むRFデバイスタグについて、図26を用いて説明する。
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、本発明の一態様に係る表示装置について、図29および図30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31に示す。
本実施の形態では、本発明の一態様に係るRFデバイスタグの使用例について図32を用いながら説明する。RFデバイスタグ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32(A)参照)、記録媒体(DVDやビデオテープ等、図32(B)参照)、包装用容器類(包装紙やボトル等、図32(C)参照)、乗り物類(自転車等、図32(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32(E)、図32(F)参照)等に設けて使用することができる。
101 半導体基板
102 半導体膜
103a 低抵抗層
103b 低抵抗層
104 ゲート絶縁膜
105 ゲート電極
105a ゲート電極
105b ゲート電極
110 配線
111a 配線
111b 配線
121 絶縁膜
122 絶縁膜
200 トランジスタ
201 絶縁膜
202 絶縁膜
203a 酸化物半導体層
203b 酸化物半導体層
203c 酸化物半導体層
204a 電極
204b 電極
205 ゲート絶縁膜
206 ゲート電極
206a 導電体
206b 導電体
207 絶縁膜
208 絶縁膜
209a 低抵抗領域
209b 低抵抗領域
250 配線
300 容量素子
301 絶縁膜
302 電極
302a 導電層
302A 導電膜
302b 導電層
302B 導電膜
302C 導電膜
302c 導電膜
303 バリア層
303A バリア膜
303B バリア層
304 絶縁体
305 電極
305A 導電膜
305a 導電体
305b 導電体
306 絶縁膜
307 配線
308 配線
310 コンタクトホール
319 レジストマスク
320 レジストマスク
325 レジストマスク
330 レジストマスク
340 中間層
350 配線
700 基板
706a 半導体
706b 半導体
706c 半導体
712 絶縁体
714a 導電体
714b 導電体
716a 導電体
716b 導電体
718 絶縁体
719 発光素子
720 絶縁体
721 絶縁体
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
800 RFデバイスタグ
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
2001 基板
2004 プラグ
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 層間絶縁膜
2207 絶縁膜
2211 半導体基板
2212 絶縁膜
2213 ゲート電極
2214 ゲート絶縁膜
2215 ソース領域およびドレイン領域
2300 トランジスタ
2301 不純物領域
2302 不純物領域
2303 ゲート電極
2304 ゲート絶縁膜
2305 側壁絶縁膜
2400 フォトダイオード
2401 導電膜
2402 導電膜
2403 導電膜
2500 フォトダイオード
2501 導電膜
2502 導電膜
2503 半導体層
2504 プラグ
3001 配線
3002 配線
3003 配線
3004 配線
3005 配線
4000 RFデバイスタグ
5100 結晶部
5120 基板
5161 領域
Claims (3)
- 第1の容量素子と、前記第1の容量素子の上方に位置する第2の容量素子と、を有し、
前記第1の容量素子は、
凸部を有する第1の電極と、
前記凸部上の第1の絶縁体と、
前記第1の電極及び前記第1の絶縁体を覆う第2の絶縁体と、
前記第2の絶縁体上の第2の電極と、を有し、
前記第2の容量素子は、
凸部を有する第3の電極と、
前記凸部を有する第3の絶縁体と、
前記第3の電極及び前記第3の絶縁体を覆う第4の絶縁体と、
前記第4の絶縁体上の第4の電極と、を有し、
前記第2の電極の側周辺は、前記第1の絶縁体及び前記第2の絶縁体を介して、前記第1の電極と重なる領域を有し、
前記第4の電極の側周辺は、前記第3の絶縁体及び前記第4の絶縁体を介して、前記第3の電極と重なる領域を有し、
前記第2の容量素子は、前記第1の容量素子と重なる領域を有し、
前記第4の電極は、前記第2の電極と電気的に接続されている、半導体装置。 - 第1の容量素子と、前記第1の容量素子の上方に位置する第2の容量素子と、を有し、
前記第1の容量素子は、
凸部を有する第1の電極と、
前記凸部上の第1の絶縁体と、
前記第1の電極及び前記第1の絶縁体を覆う第2の絶縁体と、
前記第2の絶縁体上の第2の電極と、を有し、
前記第2の容量素子は、
凸部を有する第3の電極と、
前記凸部を有する第3の絶縁体と、
前記第3の電極及び前記第3の絶縁体を覆う第4の絶縁体と、
前記第4の絶縁体上の第4の電極と、を有し、
前記第2の電極の側周辺は、前記第1の絶縁体及び前記第2の絶縁体を介して、前記第1の電極と重なる領域を有し、
前記第4の電極の側周辺は、前記第3の絶縁体及び前記第4の絶縁体を介して、前記第3の電極と重なる領域を有し、
前記第2の容量素子は、前記第1の容量素子と重なる領域を有し、
前記第3の電極は、前記第2の電極と電気的に接続されている、半導体装置。 - 請求項1または請求項2において、
前記第1の電極は、トランジスタと電気的に接続されている半導体装置。
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US20190221670A1 (en) | 2019-07-18 |
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JP2016105473A (ja) | 2016-06-09 |
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