JP6545976B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP6545976B2 JP6545976B2 JP2015041939A JP2015041939A JP6545976B2 JP 6545976 B2 JP6545976 B2 JP 6545976B2 JP 2015041939 A JP2015041939 A JP 2015041939A JP 2015041939 A JP2015041939 A JP 2015041939A JP 6545976 B2 JP6545976 B2 JP 6545976B2
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- transistor
- film
- oxide semiconductor
- insulating film
- electrode
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- 239000012528 membrane Substances 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- RUFLMLWJRZAWLJ-UHFFFAOYSA-N nickel silicide Chemical compound [Ni]=[Si]=[Ni] RUFLMLWJRZAWLJ-UHFFFAOYSA-N 0.000 description 1
- 229910021334 nickel silicide Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 229910000484 niobium oxide Inorganic materials 0.000 description 1
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 239000001272 nitrous oxide Substances 0.000 description 1
- 235000013842 nitrous oxide Nutrition 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- PVADDRMAFCOOPC-UHFFFAOYSA-N oxogermanium Chemical compound [Ge]=O PVADDRMAFCOOPC-UHFFFAOYSA-N 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 230000003068 static effect Effects 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
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- 229910052716 thallium Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
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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
- H01L27/12—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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/481—Internal lead connections, e.g. via connections, feedthrough structures
-
- 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
- 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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- 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
- H01L27/1203—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
-
- 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
-
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- 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
- H01L29/78651—Silicon transistors
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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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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
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- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Ceramic Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Semiconductor Memories (AREA)
- Thin Film Transistor (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
- Dram (AREA)
- Semiconductor Integrated Circuits (AREA)
- Electrodes Of Semiconductors (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- Electroluminescent Light Sources (AREA)
- Non-Volatile Memory (AREA)
Description
[積層構造の構成例]
以下では、本発明の一態様の半導体装置に適用することのできる積層構造の例について説明する。図3は、以下で示す積層構造10の断面概略図である。
図1(A)は、本発明の一態様の半導体装置の回路図の一例である。図1(A)に示す半導体装置は、第1のトランジスタ110と、第2のトランジスタ100と、容量素子130と、配線SLと、配線BLと、配線WLと、配線CLとを有する。
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10乃至図12を用いて説明する。
また、本実施の形態の変形例として、図13(A)に示すように容量素子の位置を第2のトランジスタ100より上方に設けてもよい。具体的には、配線BL、配線WL、配線SL、絶縁膜128上に絶縁膜151を形成する。その後、絶縁膜151、絶縁膜128、絶縁膜127、絶縁膜108及び絶縁膜107に開口を設けてプラグ165と電気的に接続するプラグ153を形成する。その後、プラグ153と電気的に接続する電極154、電極154上の絶縁膜155、絶縁膜155上の電極156を形成し、容量素子150を形成する。その後に、容量素子150を覆う絶縁膜152を形成する。なお、電極156は、配線CL1と電気的に接続し、ゲート電極105と互いに重なる領域を有している。
また、本実施の形態の変形例として、図14に示すような構成にしてもよい。図1との違いは、容量素子130の形状である。具体的には、以下で説明する。
また、本実施の形態の変形例として、図15に示すように、図14の構成に加えて第2のトランジスタ100のゲート電極105の上方に図13で示した容量素子150を設けてもよい。
本実施の形態では、実施の形態1とは異なる半導体装置について説明する。
図16(A)は、本発明の一態様の半導体装置の回路図の一例である。図16(A)に示す半導体装置は、第1のトランジスタ110と、第2のトランジスタ100と、容量素子130と、容量素子150と、配線SLと、配線BLと、配線WLと、配線CL2と、配線CL3とを有する。
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10乃至図12、図18乃至図19を用いて説明する。
また、本実施の形態の変形例として、図20(A)に示すように容量素子130の位置を第2のトランジスタ100より上方に設けてもよい。具体的には、配線BL、配線WL、配線SL、絶縁膜128上に絶縁膜151を形成する。その後、絶縁膜151に開口を設けてプラグ176と電気的に接続するプラグ178を形成する。その後、プラグ178と電気的に接続する容量素子130を形成する。その後に、容量素子130を覆う絶縁膜152を形成する。なお、容量素子130は、配線CL2と電気的に接続し、ゲート電極105と互いに重なる領域を有している。
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回路の一例について図面を参照して説明する。
実施の形態1に示した構成において、トランジスタや配線、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27(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、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。なお、図中、第2の半導体材料が適用されたトランジスタには「OS」の記号を付して示している。
また、図27(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、且つ、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27(C)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タグについて、図30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、本発明の一態様の表示パネルの構成例について説明する。
図33(A)は、本発明の一態様の表示パネルの上面図であり、図33(B)は、本発明の一態様の表示パネル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33(C)は、本発明の一態様の表示パネルの画素に有機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33(B)に示す。ここでは、VA型液晶表示パネル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33(C)に示す。ここでは、有機EL素子を用いた表示パネルの画素構造を示す。
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34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35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35(A)参照)、記録媒体(DVDやビデオテープ等、図35(B)参照)、包装用容器類(包装紙やボトル等、図35(C)参照)、乗り物類(自転車等、図35(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35(E)、図35(F)参照)等に設けて使用することができる。
11 第1の層
12 第2の層
21 第1の絶縁膜
22 第2の絶縁膜
31 第1の配線層
32 第2の配線層
41 バリア膜
100 第2のトランジスタ
101a 酸化物半導体膜
101b 酸化物半導体膜
101c 酸化物半導体膜
103 導電膜
103a 電極
103b 電極
103c 電極
104 ゲート絶縁膜
105 ゲート電極
106a 絶縁膜
106b 絶縁膜
107 絶縁膜
108 絶縁膜
109a 低抵抗領域
109b 低抵抗領域
110 第1のトランジスタ
111 半導体基板
112 半導体膜
113a 低抵抗層
113b 低抵抗層
114 ゲート絶縁膜
115 ゲート電極
115a ゲート電極
115b ゲート電極
116 絶縁膜
117 絶縁膜
118 絶縁膜
119 絶縁膜
120 バリア膜
121 絶縁膜
122 絶縁膜
123 絶縁膜
124 絶縁膜
125 絶縁膜
126 絶縁膜
127 絶縁膜
128 絶縁膜
129 絶縁膜
130 容量素子
131a 酸化物半導体膜
131b 酸化物半導体膜
132 配線
136 電極
136a 電極
136b 電極
137 絶縁膜
138 電極
150 容量素子
151 絶縁膜
152 絶縁膜
153 プラグ
154 電極
155 絶縁膜
156 電極
157 プラグ
158 プラグ
159 プラグ
160 トランジスタ
161 プラグ
162 プラグ
163 プラグ
164 プラグ
165 プラグ
166 プラグ
167 プラグ
168 プラグ
169 プラグ
170 プラグ
171 プラグ
172 プラグ
173 電極
174 電極
175 電極
176 プラグ
177 電極
178 プラグ
181 電極
182 絶縁膜
183 電極
190 容量素子
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
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
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
5120 基板
Claims (3)
- 第1のトランジスタと、
ソース又はドレインの一方が、複数のプラグを介して、前記第1のトランジスタのゲートと電気的に接続される第2のトランジスタと、
一方の電極が、前記第1のトランジスタのゲートと電気的に接続される容量素子と、
前記容量素子の他方の電極と電気的に接続される第1の配線と、を有し、
前記第2のトランジスタは前記第1のトランジスタの上に位置し、且つ前記第1のトランジスタと重なり、
前記容量素子は前記第1のトランジスタと前記第2のトランジスタとの間に位置し、且つ前記第2のトランジスタと重なり、
前記第2のトランジスタのソース又はドレインの一方は、前記複数のプラグと重なる領域を有し、
前記第1のトランジスタのチャネルは、単結晶半導体を有し、
前記第2のトランジスタのチャネルは、酸化物半導体を有することを特徴とする半導体装置。 - 第1のトランジスタと、
ソース又はドレインの一方が、前記第1のトランジスタのゲートと電気的に接続される第2のトランジスタと、
一方の電極が、前記第1のトランジスタのゲートと電気的に接続される容量素子と、
前記容量素子の他方の電極と電気的に接続される第1の配線と、を有し、
前記第2のトランジスタは前記第1のトランジスタの上に位置し、且つ前記第1のトランジスタと重なり、
前記容量素子は前記第2のトランジスタの上に位置し、且つ前記第2のトランジスタと重なり、
前記容量素子の一方の電極と前記第1のトランジスタのゲートとを接続する複数のプラグは、前記第1のトランジスタのゲートと重なり、
前記第1のトランジスタのチャネルは、単結晶半導体を有し、
前記第2のトランジスタのチャネルは、酸化物半導体を有することを特徴とする半導体装置。 - 請求項1または請求項2おいて、
前記容量素子の一方の電極は、凸部を有し、
前記容量素子の他方の電極は、凹部を有することを特徴とする半導体装置。
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