JP5743793B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP5743793B2 JP5743793B2 JP2011170921A JP2011170921A JP5743793B2 JP 5743793 B2 JP5743793 B2 JP 5743793B2 JP 2011170921 A JP2011170921 A JP 2011170921A JP 2011170921 A JP2011170921 A JP 2011170921A JP 5743793 B2 JP5743793 B2 JP 5743793B2
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- wiring
- transistor
- oxide
- film
- oxide semiconductor
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- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000005388 borosilicate glass Substances 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 229910052800 carbon group element Inorganic materials 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005566 electron beam evaporation Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000007733 ion plating Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 229910052743 krypton Inorganic materials 0.000 description 1
- 230000003211 malignant effect Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 229910001510 metal chloride Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 238000010943 off-gassing Methods 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 238000001004 secondary ion mass spectrometry Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 150000003376 silicon Chemical class 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical class [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- OYQCBJZGELKKPM-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O-2].[Zn+2].[O-2].[In+3] OYQCBJZGELKKPM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
- 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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
- H01L27/124—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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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 layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C16/00—Erasable programmable read-only memories
- G11C16/02—Erasable programmable read-only memories electrically programmable
- G11C16/04—Erasable programmable read-only memories electrically programmable using variable threshold transistors, e.g. FAMOS
- G11C16/0408—Erasable programmable read-only memories electrically programmable using variable threshold transistors, e.g. FAMOS comprising cells containing floating gate transistors
- G11C16/0433—Erasable programmable read-only memories electrically programmable using variable threshold transistors, e.g. FAMOS comprising cells containing floating gate transistors comprising cells containing a single floating gate transistor and one or more separate select transistors
-
- 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
- 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body
-
- 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
- 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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
-
- 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
- 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
- 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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
- H01L27/1251—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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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 comprising TFTs having a different architecture, e.g. top- and bottom gate TFTs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L28/00—Passive two-terminal components without a potential-jump or surface barrier for integrated circuits; Details thereof; Multistep manufacturing processes therefor
- H01L28/40—Capacitors
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B41/00—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates
- H10B41/30—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates characterised by the memory core region
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B41/00—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates
- H10B41/40—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates characterised by the peripheral circuit region
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B41/00—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates
- H10B41/70—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates the floating gate being an electrode shared by two or more components
Description
本実施の形態では、開示する発明の一態様に係る半導体装置の基本的な構成について、図面を参照して説明する。
本実施の形態では、実施の形態1で示した回路構成を、半導体装置の駆動回路に適用した例を、図面を用いて説明する。本実施の形態では、半導体装置の一例として、記憶装置に適用する例を示す。
はじめに、記憶装置に含まれるメモリセル502の構成と動作について説明する。メモリセル502の回路図を図3に示す。図3に示すメモリセル502は、第1のトランジスタ1201、第2のトランジスタ1202、および容量素子1203を有する。第2のトランジスタ1202のゲート電極は第2の信号線S2と電気的に接続され、第2のトランジスタ1202のソース電極またはドレイン電極の一方は第1の信号線S1と電気的に接続されている。また、第2のトランジスタ1202のソース電極またはドレイン電極の他方は、第1のトランジスタ1201のゲート電極および容量素子1203の一方の電極と電気的に接続される。第1のトランジスタ1201のソース電極はソース線(SL)と電気的に接続され、第1のトランジスタ1201のドレイン電極はビット線(BL)と電気的に接続される。容量素子1203の電極の他方はワード線(WL)と電気的に接続される。
図5に半導体装置の回路図の例を示す。図5に示す回路は、上述のメモリセル502と、該メモリセルを駆動する駆動回路の回路図である。図5に示す駆動回路はローデコーダ500、ロードライバ501、メモリセル502を有する。ロードライバ501およびメモリセル502はアレイ状に複数配置される。
図5に示す駆動回路の動作について説明する。ローデコーダ500により複数あるロードライバ501のうち一つが選択される。ローデコーダ500の出力線は第1のNANDゲート503の入力部の一方および第2のNANDゲート507の入力部の一方と電気的に接続されている。一方、第1のNANDゲート503の入力部の他方は書き込みイネーブル信号線(WE)と電気的に接続され、また、第2のNANDゲート507の入力部の他方は読み出しイネーブル信号線(RE)と電気的に接続されている。したがって、書き込み動作、すなわちWEがアクティブである場合には第1のNANDゲート503の出力がアクティブになり、読み出し動作、すなわちREがアクティブである場合には第2のNANDゲート507の出力がアクティブになる。
本実施の形態では、開示する発明の一態様に係る半導体装置の構成およびその作製方法について図15乃至図20を参照して説明する。具体的には、記憶装置に搭載可能なメモリセルの構成およびその作製方法について説明する。
図15は、半導体装置の構成の一例である。図15(A)には、半導体装置の断面を、図15(B)には、半導体装置の平面を、それぞれ示す。ここで、図15(A)は、図15(B)のA1−A2およびB1−B2における断面に相当する。図15(A)および図15(B)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160を有し、上部に第2の半導体材料を用いたトランジスタ162を有する。ここで、第1の半導体材料と第2の半導体材料とは異なる材料とすることが望ましい。例えば、第1の半導体材料を酸化物半導体以外の半導体材料とし、第2の半導体材料を酸化物半導体とすることができる。酸化物半導体以外の半導体材料としては、例えば、シリコン、ゲルマニウム、シリコンゲルマニウム、炭化シリコン、またはガリウムヒ素等を用いることができ、単結晶半導体を用いることが好ましい。他に、有機半導体材料などを用いてもよい。このような半導体材料を用いたトランジスタは、高速動作が容易である。一方で、酸化物半導体を用いたトランジスタは、その特性により長時間の電荷保持を可能とする。図15に示す半導体装置は、メモリセルとして用いることができる。
次に、上記半導体装置の作製に用いられるSOI基板の作製方法の一例について、図16を参照して説明する。
次に、上記のSOI基板を用いた半導体装置の作製方法について、図17乃至図20を参照して説明する。
はじめに下部のトランジスタ160の作製方法について、図17および図18を参照して説明する。なお、図17および図18は、図16に示す方法で作成したSOI基板の一部であって、図15(A)に示す下部のトランジスタに相当する断面工程図である。
次に、上部のトランジスタ162の作製方法について、図19および図20を参照して説明する。
本実施の形態では、上述の実施の形態で説明した半導体装置を電子機器に適用する場合について、図21を用いて説明する。本実施の形態では、コンピュータ、携帯電話機(携帯電話、携帯電話装置ともいう)、携帯情報端末(携帯型ゲーム機、音響再生装置なども含む)、デジタルカメラ、デジタルビデオカメラなどのカメラ、電子ペーパー、テレビジョン装置(テレビ、またはテレビジョン受信機ともいう)などの電子機器に、上述の半導体装置を適用する場合について説明する。
上記実施の形態において、トランジスタ162の半導体層に用いることのできる酸化物半導体層の一形態を、図23を用いて説明する。
酸化物半導体に限らず、実際に測定される絶縁ゲート型トランジスタの電界効果移動度は、さまざまな理由によって本来の移動度よりも低くなる。移動度を低下させる要因としては半導体内部の欠陥や半導体と絶縁膜との界面の欠陥があるが、Levinsonモデルを用いると、半導体内部に欠陥がないと仮定した場合の電界効果移動度を理論的に導き出せる。
試料1および試料2のいずれも、BT試験前後におけるしきい値電圧の変動が小さく、信頼性が高いことがわかる。
101 トランジスタ
102 領域
120 半導体層
122 絶縁層
124 マスク
126 不純物領域
130 不純物領域
132 不純物領域
134 チャネル形成領域
136 絶縁層
138 絶縁層
140 絶縁層
144 酸化物半導体層
146 ゲート絶縁膜
150 絶縁層
154 配線
156 絶縁層
160 トランジスタ
162 トランジスタ
162A トランジスタ
162B トランジスタ
164 容量素子
200 回路
201 トランジスタ
202 トランジスタ
203 領域
300 基板
301 素子形成層
302 配線
303 配線
304 配線
305 層間膜
306 層間膜
400 半導体基板
401 絶縁層
404a 酸化物導電層
404b 酸化物導電層
410 単結晶半導体基板
412 酸化膜
414 脆化領域
416 単結晶半導体層
418 単結晶半導体層
437 絶縁層
450a 第1の結晶性酸化物半導体層
450b 第2の結晶性酸化物半導体層
453 酸化物半導体層
500 ローデコーダ
501 ロードライバ
502 メモリセル
503 NANDゲート
504 NANDゲート部
505 レベルシフタ
506 バッファ
507 NANDゲート
508 レベルシフタ
509 バッファ
601 N型トランジスタ
603 P型トランジスタ
605 信号線
606 信号線
607 領域
700 信号線
702 NANDゲート
704 信号線
705 領域
706 層間膜
707 筐体
708 筐体
709 表示部
710 キーボード
711 本体
712 スタイラス
713 表示部
714 操作ボタン
715 外部インターフェイス
720 電子書籍
721 筐体
723 筐体
725 表示部
727 表示部
731 電源
733 操作キー
735 スピーカー
737 軸部
740 筐体
741 筐体
742 表示パネル
743 スピーカー
744 マイクロフォン
745 操作キー
746 ポインティングデバイス
747 カメラ用レンズ
748 外部接続端子
749 太陽電池セル
750 外部メモリスロット
761 本体
763 接眼部
764 操作スイッチ
765 表示部
766 バッテリー
767 表示部
770 テレビジョン装置
771 筐体
773 表示部
775 スタンド
780 リモコン操作機
800 信号線
802 NANDゲート
804 信号線
805 領域
900 インバータ
901 N型トランジスタ
903 P型トランジスタ
910 入力信号線
911 反転信号入力線
912 出力信号線
913 反転信号出力線
1000 トランジスタ
1001 配線
1002 配線
1003 領域
1006 層間膜
1100 トランジスタ
1101 配線
1102 配線
1103 領域
1201 トランジスタ
1202 トランジスタ
1203 容量素子
122a ゲート絶縁膜
128a ゲート電極
128b 導電層
1300 層
1301 トランジスタ
1302 トランジスタ
1400 インバータ
1401 N型トランジスタ
1403 P型トランジスタ
1407 N型トランジスタ
1408 P型トランジスタ
1410 入力信号線
1411 反転信号入力線
1412 出力信号線
1413 反転信号出力線
142a ソース電極
142b ドレイン電極
148a ゲート電極
148b 導電層
1500 トランジスタ
1501 配線
1502 配線
1503 領域
1506 層間膜
1600 信号線
1601 回路
1602 バッファ
1603 回路
1604 信号線
1605 信号線
302a 配線
302b 配線
303a 配線
303b 配線
703a トランジスタ
703b トランジスタ
803a トランジスタ
803b トランジスタ
2101 下地絶縁膜
2102 埋め込み絶縁物
2103a 半導体領域
2103b 半導体領域
2103c 半導体領域
2104 ゲート絶縁膜
2105 ゲート電極
2106a 側壁絶縁物
2106b 側壁絶縁物
2107 絶縁物
2108a ソース電極
2108b ドレイン電極
3100 基板
3102 下地絶縁膜
3104 保護絶縁膜
3106 酸化物半導体膜
3106a 高抵抗領域
3106b 低抵抗領域
3108 ゲート絶縁膜
3110 ゲート電極
3112 側壁絶縁膜
3114 一対の電極
3116 層間絶縁膜
3118 配線
3600 基板
3602 下地絶縁膜
3604 保護絶縁膜
3606 酸化物半導体膜
3608 ゲート絶縁膜
3610 ゲート電極
3614 一対の電極
3616 層間絶縁膜
3618 配線
3620 保護膜
Claims (4)
- メモリセルと、前記メモリセルの駆動回路部を含む半導体装置であって、
前記メモリセルは、
第1のチャネル形成領域、第1のゲート電極、第1のソース電極および第1のドレイン電極を含む第1のトランジスタと、
第2のチャネル形成領域、第2のゲート電極、第2のソース電極および第2のドレイン電極を含む第2のトランジスタと、
容量素子と、を有し、
前記第2のトランジスタは、少なくとも一部が前記第1のトランジスタと重畳して設けられ、
前記駆動回路部は、
前記第2のソース電極または前記第2のドレイン電極と同じ工程で形成される第1の配線と、層間膜を介して前記第1の配線と重畳し、且つ前記第2のゲート電極と同じ工程で形成される第2の配線と、を含む半導体素子を有し、
前記第1の配線と、前記第2の配線と、は同電位が供給される配線である半導体装置。 - メモリセルと、前記メモリセルの駆動回路部を含む半導体装置であって、
前記メモリセルは、
第1のチャネル形成領域、第1のゲート電極、第1のソース電極および第1のドレイン電極を含む第1のトランジスタと、
第2のチャネル形成領域、第2のゲート電極、第2のソース電極および第2のドレイン電極を含む第2のトランジスタと、
容量素子と、を有し、
前記第2のトランジスタは、少なくとも一部が前記第1のトランジスタと重畳して設けられ、
前記駆動回路部は、
前記第2のソース電極または前記第2のドレイン電極と同じ工程で形成される第1の配線と、層間膜を介して前記第1の配線と重畳し、且つ前記第2のゲート電極と同じ工程で形成される第2の配線と、を含む半導体素子を有し、
前記第1の配線と、前記第2の配線と、は同相の信号が供給される配線である半導体装置。 - 前記半導体素子は、レベルシフタである請求項1または2に記載の半導体装置。
- 前記層間膜の膜厚は、10nm以上100nm以下である請求項1乃至3に記載の半導体装置。
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US20120032171A1 (en) | 2012-02-09 |
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JP7470754B2 (ja) | 2024-04-18 |
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