JP6523695B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP6523695B2 JP6523695B2 JP2015019214A JP2015019214A JP6523695B2 JP 6523695 B2 JP6523695 B2 JP 6523695B2 JP 2015019214 A JP2015019214 A JP 2015019214A JP 2015019214 A JP2015019214 A JP 2015019214A JP 6523695 B2 JP6523695 B2 JP 6523695B2
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- film
- transistor
- insulating film
- oxide semiconductor
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- 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
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- 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
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- 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
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- 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
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- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
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- H01L29/24—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only semiconductor materials not provided for in groups H01L29/16, H01L29/18, H01L29/20, H01L29/22
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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
- H01L29/423—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
- 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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- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/43—Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/49—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET
- H01L29/4908—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET for thin film semiconductor, e.g. gate of TFT
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
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- 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
- H01L29/78606—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with supplementary region or layer in the thin film or in the insulated bulk substrate supporting it for controlling or increasing the safety of the device
- H01L29/78618—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with supplementary region or layer in the thin film or in the insulated bulk substrate supporting it for controlling or increasing the safety of the device characterised by the drain or the source properties, e.g. the doping structure, the composition, the sectional shape or the contact structure
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- 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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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thin Film Transistor (AREA)
- Semiconductor Integrated Circuits (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
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- Formation Of Insulating Films (AREA)
Description
本実施の形態では、半導体装置及び半導体装置の作製方法の一形態を、図面を用いて説明する。
図1に、半導体装置に含まれるトランジスタの一例として、トップゲート構造のトランジスタ及び該トランジスタと同一工程で作製することができる容量素子を示す。
トランジスタ150のゲート電極104aと、容量素子160の下部電極104bとが同時に形成される。また、トランジスタ150のゲート絶縁膜112aと、容量素子160の絶縁膜112bとが同時に形成される。また、トランジスタ150のゲート電極114aと、容量素子160の上部電極114bとが同時に形成される。
酸化物半導体膜(以下、IGZOと示す。)が完全な結晶の場合、室温では、Hは、優先的にab面に沿って拡散する。また、450℃の加熱処理の際には、Hは、ab面及びc軸方向それぞれに拡散する。そこで、ここでは、IGZOに酸素欠損Voが存在する場合、Hは酸素欠損Vo中に入りやすいか否かについて説明する。ここで、酸素欠損Vo中にHがある状態をVoHと表記する。
IGZO中において酸素欠損VoとHが存在する場合、<(1). VoHの形成しやすさ及び安定性>で示した、NEB法を用いた計算より、酸素欠損VoとHはVoHを形成しやすく、さらにVoHは安定であると考えられる。そこで、VoHがキャリアトラップに関与するかを調べるため、VoHの遷移レベルの算出を行った。
以下では、上述したトランジスタの任意断面におけるバンド構造について説明する。
次に、図1に示すトランジスタ150及び容量素子160の作製方法について、図8乃至図17を用いて説明する。
本実施の形態では、本発明の一態様の半導体装置に含まれる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、CAAC−OS及びnc−OSの成膜モデルについて説明する。
以下では、CAAC−OSの成膜モデルにおいて記載のターゲットの劈開面について説明する。
本実施の形態では、本発明の一態様の半導体装置を用いる発光装置の一態様について説明する。なお、本実施の形態では、発光装置の画素部の構成について、図25(A)、(B)を用いて説明する。
本実施の形態においては、先の実施の形態で例示したトランジスタ及び容量素子を用いた表示装置の一例について、図26乃至図28を用いて以下説明を行う。
図27及び図28に示す表示装置700は、引き回し配線部711と、画素部702と、ソースドライバ回路部704と、FPC端子部708と、を有する。また、引き回し配線部711は、信号線710を有する。また、画素部702は、トランジスタ750及び容量素子790を有する。また、ソースドライバ回路部704は、トランジスタ752を有する。
図27に示す表示装置700は、液晶素子775を有する。液晶素子775は、導電膜772、導電膜774、及び液晶層776を有する。導電膜774は、第2の基板705側に設けられ、対向電極としての機能を有する。図27に示す表示装置700は、導電膜772と導電膜774に印加される電圧によって、液晶層776の配向状態が変わることによって光の透過、非透過が制御され画像を表示することができる。
図28に示す表示装置700は、発光素子782を有する。発光素子782は、導電膜784、EL層786、及び導電膜788を有する。図28に示す表示装置700は、発光素子782が有するEL層786が発光することによって、画像を表示することができる。
本実施の形態では、本発明の一態様に係る表示装置の構成例について説明する。
図36(A)には、本発明の一態様に係る半導体装置を用いた表示装置の上面図を示す。また、図36(B)には、本発明の一態様に係る半導体装置を用いた表示装置の画素に液晶素子を用いた場合における画素回路を示す。また、図36(C)には、本発明の一態様に係る半導体装置を用いた表示装置の画素に有機EL素子を用いた場合における画素回路を示す。
また、画素の回路構成の一例を図36(B)に示す。ここでは、VA型液晶表示装置の画素など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36(C)に示す。ここでは、有機EL素子に代表される発光素子を用いた表示装置(発光装置ともいう。)の画素構造を示す。
以下では、本発明の一態様に係る半導体装置を適用した表示モジュールについて、図41を用いて説明を行う。
本実施の形態では、本発明の一態様の半導体装置を用いることができる電子機器について、図44を用いて説明を行う。
101 絶縁膜
102 絶縁膜
102a 絶縁膜
102b 絶縁膜
104a ゲート電極
104a1 導電膜
104a2 導電膜
104b 下部電極
104b1 導電膜
104b2 導電膜
106 第1の領域
106a チャネル形成領域
106b チャネル形成領域
106c チャネル形成領域
107a 第2の領域
107a1 低抵抗領域
107a2 低抵抗領域
107b 第2の領域
107b1 低抵抗領域
107b2 低抵抗領域
108 絶縁膜
112a ゲート絶縁膜
112b 絶縁膜
113 脱離抑制膜
114a ゲート電極
114a1 導電膜
114a2 導電膜
114b 上部電極
114b1 導電膜
114b2 導電膜
116a ソース電極
116a1 導電膜
116a2 導電膜
116b ドレイン電極
116b1 導電膜
116b2 導電膜
118 絶縁膜
126 酸化物半導体膜
126a 酸化物半導体膜
126b 酸化物半導体膜
128 絶縁膜
132 絶縁膜
138 絶縁膜
140 酸素
142 不純物元素
148 絶縁膜
150 トランジスタ
160 容量素子
204 配線
204a 導電膜
204b 導電膜
212 絶縁膜
214 配線
214a 導電膜
214b 導電膜
216 配線
216a 導電膜
216b 導電膜
400 基板
453 絶縁膜
453a 絶縁膜
453b 絶縁膜
455 酸化物半導体膜
455a チャネル領域
455b 低抵抗領域
455c 低抵抗領域
455d 領域
455e 領域
455f 低抵抗領域
455g 低抵抗領域
455h 低抵抗領域
455i 低抵抗領域
457 絶縁膜
457a 絶縁膜
457b 絶縁膜
459 導電膜
459a 導電膜
459b 導電膜
465 窒化物絶縁膜
467 絶縁膜
468 導電膜
469 導電膜
475 絶縁膜
500 FET
501 基板
502 基板
504R 発光素子
504G 発光素子
504B 発光素子
504W 発光素子
506 導電膜
507 導電膜
508 隔壁
509 構造体
510 EL層
512 導電膜
514R 着色層
514G 着色層
514B 着色層
514W 着色層
516 基板
518 封止膜
520 領域
522 絶縁膜
524 開口部
600 ペレット
600a ペレット
600b ペレット
601 イオン
620 基板
630 ターゲット
700 表示装置
701 基板
702 画素部
704 ソースドライバ回路部
705 基板
706 ゲートドライバ回路部
708 FPC端子部
710 信号線
711 配線部
712 シール材
716 FPC
730 絶縁膜
732 封止膜
734 絶縁膜
736 着色膜
738 遮光膜
750 トランジスタ
752 トランジスタ
760 接続電極
766 絶縁膜
770 平坦化絶縁膜
772 導電膜
774 導電膜
775 液晶素子
776 液晶層
778 構造体
780 異方性導電膜
782 発光素子
784 導電膜
786 EL層
788 導電膜
790 容量素子
5000 基板
5001 画素部
5002 走査線駆動回路
5003 走査線駆動回路
5004 信号線駆動回路
5010 容量配線
5012 ゲート配線
5013 ゲート配線
5014 ドレイン電極
5016 トランジスタ
5017 トランジスタ
5018 液晶素子
5019 液晶素子
5020 画素
5021 スイッチング用トランジスタ
5022 駆動用トランジスタ
5023 容量素子
5024 発光素子
5025 信号線
5026 走査線
5027 電源線
5028 共通電極
5029 容量素子
5111 画素
5154 発光素子
5155 トランジスタ
5156 トランジスタ
5157 トランジスタ
5158 容量素子
5211 画素
5214 発光素子
5215 トランジスタ
5216 トランジスタ
5217 トランジスタ
5218 容量素子
5219 トランジスタ
5311 画素
5314 発光素子
5315 トランジスタ
5316 トランジスタ
5317 トランジスタ
5318 容量素子
5319 トランジスタ
5320 トランジスタ
5411 画素
5414 発光素子
5415 トランジスタ
5416 トランジスタ
5417 トランジスタ
5418 容量素子
5440 トランジスタ
5441 トランジスタ
5442 トランジスタ
6000 筐体
6001 表示部
6002 表示部
6003 スピーカー
6004 LEDランプ
6005 操作キー
6006 接続端子
6007 センサー
6008 マイクロフォン
6009 スイッチ
6010 赤外線ポート
6011 記録媒体読込部
6012 支持部
6013 イヤホン
6014 アンテナ
6015 シャッターボタン
6016 受像部
6017 充電器
6100 ペレット
6120 基板
6161 領域
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 セル
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 (6)
- トランジスタと、容量素子と、を有し、
前記トランジスタは、
第1の導電膜と、
前記第1の導電膜上の第1の絶縁膜と、
前記第1の絶縁膜上の第2の絶縁膜と、
前記第2の絶縁膜上の酸化物半導体膜と、
前記酸化物半導体膜に接する一対の電極と、
前記酸化物半導体膜上のゲート絶縁膜と、
前記ゲート絶縁膜を介して前記酸化物半導体膜と互いに重なる第2の導電膜と、を有し、
前記第1の絶縁膜は、水素を含む膜を有し、
前記第2の絶縁膜は、酸化物絶縁膜を有し、
前記ゲート絶縁膜の端部が前記第2の導電膜より外側に位置し、
前記ゲート絶縁膜の端部の断面形状は湾曲し、
前記容量素子は、
下部電極と、
前記下部電極上の電極間絶縁膜と、
前記電極間絶縁膜上の上部電極と、を有し、
前記第1の導電膜と前記下部電極は、同一表面上に設けられ、
前記電極間絶縁膜の端部が前記上部電極より外側に位置し、
前記電極間絶縁膜の端部の断面形状は湾曲していることを特徴とする半導体装置。 - 請求項1において、
前記水素を含む膜は、窒化シリコン膜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、
前記酸化物絶縁膜は、加熱により一部の酸素を放出する機能を有する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、
前記酸化物半導体膜は、第1の領域と、前記第1の領域を挟む一対の第2の領域と、を有し、
前記第1の領域は、前記第1の導電膜と重なる領域を有し、
前記第1の領域及び前記第2の領域は、不純物元素の濃度が異なることを特徴とする半導体装置。 - 請求項4において、
前記第1の領域より前記第2の領域の不純物元素の濃度が高いことを特徴とする半導体装置。 - 請求項4または請求項5において、
前記不純物元素は、水素、ホウ素、炭素、窒素、フッ素、アルミニウム、シリコン、リンまたは塩素の中から選ばれるいずれか一つを有することを特徴とする半導体装置。
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2015
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US10373981B2 (en) | 2019-08-06 |
JP2020057808A (ja) | 2020-04-09 |
US20170236846A1 (en) | 2017-08-17 |
JP7393112B2 (ja) | 2023-12-06 |
JP7194788B2 (ja) | 2022-12-22 |
JP2021192428A (ja) | 2021-12-16 |
JP7194787B2 (ja) | 2022-12-22 |
JP2023030003A (ja) | 2023-03-07 |
JP2021170681A (ja) | 2021-10-28 |
JP6665270B2 (ja) | 2020-03-13 |
JP2015181150A (ja) | 2015-10-15 |
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