JP2012256875A - 半導体装置およびその作製方法 - Google Patents
半導体装置およびその作製方法 Download PDFInfo
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- JP2012256875A JP2012256875A JP2012109177A JP2012109177A JP2012256875A JP 2012256875 A JP2012256875 A JP 2012256875A JP 2012109177 A JP2012109177 A JP 2012109177A JP 2012109177 A JP2012109177 A JP 2012109177A JP 2012256875 A JP2012256875 A JP 2012256875A
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- transistor
- electrode
- oxide
- source electrode
- gate
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Classifications
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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
- H01L29/78696—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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- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- 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
- H01L21/82—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 to produce devices, e.g. integrated circuits, each consisting of a plurality of components
- H01L21/822—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 to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using silicon technology
- H01L21/8222—Bipolar technology
- H01L21/8226—Bipolar technology comprising merged transistor logic or integrated injection logic
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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 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
- H01L27/08—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 only semiconductor components of a single kind
- H01L27/085—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 only semiconductor components of a single kind including field-effect components only
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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 potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
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- 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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- 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
- H01L27/124—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 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 layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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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 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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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 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
- H01L27/1259—Multistep manufacturing methods
- H01L27/127—Multistep manufacturing methods with a particular formation, treatment or patterning of the active layer specially adapted to the circuit arrangement
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Abstract
【解決手段】ソース電極及びドレイン電極の両方がゲート電極に重なる第1のトランジスタと、ソース電極はゲート電極と重ね、且つ、ドレイン電極はゲート電極と重ならない第2のトランジスタとを組み合わせてバッファ回路やインバータ回路などを構成する。第2のトランジスタをこのような構造とすることによって、容量Cpを小さくし、電位差VDD−VSSが小さい場合でもVA’が大きくとれるようになる。
【選択図】図1
Description
本実施の形態では、バッファ回路や、インバータ回路を構成する際に用いる出力部に相当する回路及びその構成の一例を図1(A)、図2(A)、及び図2(B)を用いて説明する。
本実施の形態では、図1(A)に示す容量303を設けない例を以下に説明する。
実施の形態1の図1に示す回路に用いる第1のトランジスタ301の電界効果移動度は、高いことが望ましく、10より大きく、好ましくは30以上、より好ましくは50以上の電界効果移動度を有するトランジスタを用いる。そして、第2のトランジスタ302は、第1のトランジスタと同一プロセスで形成され、ソース電極がゲート電極と重なり、ドレイン電極がゲート電極と重ならない構造とする。これにより電位差VDD−VSSが小さい場合でもVA’が大きくとれるようになる。特に高い電界効果移動度が得られる半導体材料、具体的にはIn−Sn−Zn−O膜を半導体層に用いれば、オン電流の低下も特に問題とならない。
本実施の形態では、c軸配向し、かつab面、表面または界面の方向から見て三角形状または六角形状の原子配列を有し、c軸においては金属原子が層状または金属原子と酸素原子とが層状に配列しており、ab面においてはa軸またはb軸の向きが異なる(c軸を中心に回転した)結晶(CAAC:C Axis Aligned Crystalともいう。)を含む酸化物について説明する。
103 半導体領域
104 ゲート絶縁層
105 ゲート電極
106 側壁絶縁物
107 絶縁物
108 電極
108a ソース電極
108b ドレイン電極
300 基板
301 第1のトランジスタ
302 第2のトランジスタ
303 容量
304 制御部
305 容量
306 酸化物半導体層
308 ゲート絶縁層
314 ソース電極
315 ドレイン電極
320 保護絶縁膜
323 寄生容量
324 ソース電極
325 接続電極
326 酸化物半導体層
330 ゲート電極
Claims (4)
- 第1のトランジスタと、
前記第1のトランジスタのドレイン電極と電気的にソース電極が接続する第2のトランジスタとを有し、
前記第1のトランジスタのゲート電極は、ゲート絶縁層を介して前記第1のトランジスタのソース電極及びドレイン電極と重なり、
前記第2のトランジスタのゲート電極は、ゲート絶縁層を介して前記第2のトランジスタのソース電極と重なり、
前記第2のトランジスタのゲート電極の一方の端面は、前記第2のトランジスタのソース電極と前記第2のトランジスタのドレイン電極の間隙と重なり、
前記第1のトランジスタ及び前記第2のトランジスタはnチャネル型トランジスタであることを特徴とする半導体装置。 - 第1のトランジスタと、
前記第1のトランジスタのドレイン電極と電気的にソース電極が接続する第2のトランジスタと、
前記第2のトランジスタのゲート電極と一方の電極が電気的に接続する容量とを有し、
前記容量のもう一方の電極は、前記第2のトランジスタのソース電極と電気的に接続され、
前記第1のトランジスタのゲート電極は、ゲート絶縁層を介して前記第1のトランジスタのソース電極及びドレイン電極と重なり、
前記第2のトランジスタのゲート電極は、ゲート絶縁層を介して前記第2のトランジスタのソース電極と重なり、
前記第2のトランジスタのゲート電極の一方の端面は、前記第2のトランジスタのソース電極と前記第2のトランジスタのドレイン電極の間隙と重なり、
前記第1のトランジスタ及び前記第2のトランジスタはnチャネル型トランジスタであ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において、前記第1のトランジスタの半導体層及び前記第2のトランジスタの半導体層は、少なくともIn及びZnを含む酸化物半導体層であ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において、前記第1のトランジスタの半導体層及び前記第2のトランジスタの半導体層は、少なくともIn、Sn、及びZnを含む酸化物半導体層であることを特徴とする半導体装置。
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KR101952570B1 (ko) | 2019-02-27 |
US20120286263A1 (en) | 2012-11-15 |
JP7462098B2 (ja) | 2024-04-04 |
JP6714759B2 (ja) | 2020-06-24 |
JP7285983B2 (ja) | 2023-06-02 |
US20170025549A1 (en) | 2017-01-26 |
JP2020188290A (ja) | 2020-11-19 |
JP6342604B2 (ja) | 2018-06-13 |
JP2019192936A (ja) | 2019-10-31 |
JP6553775B2 (ja) | 2019-07-31 |
JP6363768B2 (ja) | 2018-07-25 |
JP2022104924A (ja) | 2022-07-12 |
JP2022044683A (ja) | 2022-03-17 |
JP7046293B2 (ja) | 2022-04-01 |
KR20120127270A (ko) | 2012-11-21 |
JP2018157228A (ja) | 2018-10-04 |
JP7013557B2 (ja) | 2022-01-31 |
JP6754913B2 (ja) | 2020-09-16 |
JP2020129705A (ja) | 2020-08-27 |
JP2023104981A (ja) | 2023-07-28 |
US9466618B2 (en) | 2016-10-11 |
JP2021044586A (ja) | 2021-03-18 |
JP2024079776A (ja) | 2024-06-11 |
JP2017157872A (ja) | 2017-09-07 |
JP6811888B2 (ja) | 2021-01-13 |
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