JPWO2021105828A1 - - Google Patents

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Publication number
JPWO2021105828A1
JPWO2021105828A1 JP2021560759A JP2021560759A JPWO2021105828A1 JP WO2021105828 A1 JPWO2021105828 A1 JP WO2021105828A1 JP 2021560759 A JP2021560759 A JP 2021560759A JP 2021560759 A JP2021560759 A JP 2021560759A JP WO2021105828 A1 JPWO2021105828 A1 JP WO2021105828A1
Authority
JP
Japan
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP2021560759A
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Japanese (ja)
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JPWO2021105828A5 (https=
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of JPWO2021105828A1 publication Critical patent/JPWO2021105828A1/ja
Publication of JPWO2021105828A5 publication Critical patent/JPWO2021105828A5/ja
Priority to JP2025067399A priority Critical patent/JP2025105640A/ja
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
    • H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
    • H10D86/421—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs having a particular composition, shape or crystalline structure of the active layer
    • H10D86/423—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs having a particular composition, shape or crystalline structure of the active layer comprising semiconductor materials not belonging to the Group IV, e.g. InGaZnO
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D30/00—Field-effect transistors [FET]
    • H10D30/60—Insulated-gate field-effect transistors [IGFET]
    • H10D30/67—Thin-film transistors [TFT]
    • H10D30/6729—Thin-film transistors [TFT] characterised by the electrodes
    • H10D30/673—Thin-film transistors [TFT] characterised by the electrodes characterised by the shapes, relative sizes or dispositions of the gate electrodes
    • H10D30/6733—Multi-gate TFTs
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D84/00—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D84/00—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers
    • H10D84/01—Manufacture or treatment
    • H10D84/0123—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs
    • H10D84/0126—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs the components including insulated gates, e.g. IGFETs
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D84/00—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers
    • H10D84/01—Manufacture or treatment
    • H10D84/02—Manufacture or treatment characterised by using material-based technologies
    • H10D84/03—Manufacture or treatment characterised by using material-based technologies using Group IV technology, e.g. silicon technology or silicon-carbide [SiC] technology
    • H10D84/038—Manufacture or treatment characterised by using material-based technologies using Group IV technology, e.g. silicon technology or silicon-carbide [SiC] technology using silicon technology, e.g. SiGe
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
    • H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
    • H10D86/441—Interconnections, e.g. scanning lines
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
    • H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
    • H10D86/471—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs having different architectures, e.g. having both top-gate and bottom-gate TFTs
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
    • H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
    • H10D86/481—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs integrated with passive devices, e.g. auxiliary capacitors
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
    • H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
    • H10D86/60—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs wherein the TFTs are in active matrices
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136213—Storage capacitors associated with the pixel electrode
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/13624—Active matrix addressed cells having more than one switching element per pixel
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136286—Wiring, e.g. gate line, drain line
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Thin Film Transistor (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Control Of El Displays (AREA)
JP2021560759A 2019-11-29 2020-11-20 Withdrawn JPWO2021105828A1 (https=)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2025067399A JP2025105640A (ja) 2019-11-29 2025-04-16 半導体装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019215961 2019-11-29
PCT/IB2020/060946 WO2021105828A1 (ja) 2019-11-29 2020-11-20 半導体装置、表示装置、及び電子機器

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2025067399A Division JP2025105640A (ja) 2019-11-29 2025-04-16 半導体装置

Publications (2)

Publication Number Publication Date
JPWO2021105828A1 true JPWO2021105828A1 (https=) 2021-06-03
JPWO2021105828A5 JPWO2021105828A5 (https=) 2023-11-09

Family

ID=76130043

Family Applications (2)

Application Number Title Priority Date Filing Date
JP2021560759A Withdrawn JPWO2021105828A1 (https=) 2019-11-29 2020-11-20
JP2025067399A Pending JP2025105640A (ja) 2019-11-29 2025-04-16 半導体装置

Family Applications After (1)

Application Number Title Priority Date Filing Date
JP2025067399A Pending JP2025105640A (ja) 2019-11-29 2025-04-16 半導体装置

Country Status (4)

Country Link
US (2) US12453180B2 (https=)
JP (2) JPWO2021105828A1 (https=)
CN (1) CN114730807A (https=)
WO (1) WO2021105828A1 (https=)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022043826A1 (ja) 2020-08-27 2022-03-03 株式会社半導体エネルギー研究所 半導体装置、表示装置、及び電子機器
US11699391B2 (en) 2021-05-13 2023-07-11 Semiconductor Energy Laboratory Co., Ltd. Semiconductor device, display apparatus, and electronic device
CN113724635A (zh) * 2021-08-18 2021-11-30 惠科股份有限公司 阵列基板行驱动电路、阵列基板以及显示面板
US12586535B2 (en) * 2023-06-13 2026-03-24 Apple Inc. Display having semiconducting oxide gate driver circuitry with bottom gate terminals for reduced leakage
US20260024499A1 (en) * 2024-07-19 2026-01-22 Apple Inc. Display Gate Driver Circuitry with Reduced Power Consumption and Smaller Footprint

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004222256A (ja) * 2002-12-25 2004-08-05 Semiconductor Energy Lab Co Ltd 半導体装置およびこれを用いた表示装置並びに電子機器
JP2008141091A (ja) * 2006-12-05 2008-06-19 Seiko Epson Corp 半導体装置および電気光学装置
JP2013062014A (ja) * 2011-08-24 2013-04-04 Semiconductor Energy Lab Co Ltd 半導体装置
JP2015014786A (ja) * 2013-06-05 2015-01-22 株式会社半導体エネルギー研究所 順序回路、半導体装置
JP2017518641A (ja) * 2014-05-29 2017-07-06 スナップトラック・インコーポレーテッド 高密度蓄積キャパシタを有するトランジスタの作製

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001325798A (ja) 2000-05-16 2001-11-22 Sony Corp 論理回路およびこれを用いた表示装置
JP5436049B2 (ja) 2009-05-29 2014-03-05 三菱電機株式会社 シフトレジスタ回路、シフトレジスタ回路の設計方法及び半導体装置
US8588000B2 (en) 2010-05-20 2013-11-19 Semiconductor Energy Laboratory Co., Ltd. Semiconductor memory device having a reading transistor with a back-gate electrode
KR102115344B1 (ko) 2010-08-27 2020-05-26 가부시키가이샤 한도오따이 에네루기 켄큐쇼 기억 장치, 반도체 장치
US8835917B2 (en) 2010-09-13 2014-09-16 Semiconductor Energy Laboratory Co., Ltd. Semiconductor device, power diode, and rectifier
US9024317B2 (en) 2010-12-24 2015-05-05 Semiconductor Energy Laboratory Co., Ltd. Semiconductor circuit, method for driving the same, storage device, register circuit, display device, and electronic device
JP5933897B2 (ja) 2011-03-18 2016-06-15 株式会社半導体エネルギー研究所 半導体装置
WO2013018217A1 (ja) * 2011-08-03 2013-02-07 富士通株式会社 半導体集積回路及びラッチ回路の駆動方法
JP5832399B2 (ja) 2011-09-16 2015-12-16 株式会社半導体エネルギー研究所 発光装置
US9742378B2 (en) * 2012-06-29 2017-08-22 Semiconductor Energy Laboratory Co., Ltd. Pulse output circuit and semiconductor device
US8947158B2 (en) 2012-09-03 2015-02-03 Semiconductor Energy Laboratory Co., Ltd. Semiconductor device and electronic device
TWI643435B (zh) 2013-08-21 2018-12-01 日商半導體能源研究所股份有限公司 電荷泵電路以及具備電荷泵電路的半導體裝置
US10483293B2 (en) 2014-02-27 2019-11-19 Semiconductor Energy Laboratory Co., Ltd. Active matrix display device, and module and electronic appliance including the same
US9312280B2 (en) 2014-07-25 2016-04-12 Semiconductor Energy Laboratory Co., Ltd. Semiconductor device
WO2016055894A1 (en) 2014-10-06 2016-04-14 Semiconductor Energy Laboratory Co., Ltd. Semiconductor device and electronic device
US10032921B2 (en) 2015-07-31 2018-07-24 Semiconductor Energy Laboratory Co., Ltd. Semiconductor device, display module, and electronic device
SG10201607278TA (en) 2015-09-18 2017-04-27 Semiconductor Energy Lab Co Ltd Semiconductor device and electronic device
JP6864456B2 (ja) 2015-10-15 2021-04-28 株式会社半導体エネルギー研究所 半導体装置
US9741400B2 (en) 2015-11-05 2017-08-22 Semiconductor Energy Laboratory Co., Ltd. Semiconductor device, memory device, electronic device, and method for operating the semiconductor device
JP6811084B2 (ja) 2015-12-18 2021-01-13 株式会社半導体エネルギー研究所 半導体装置
KR102613318B1 (ko) 2015-12-28 2023-12-14 가부시키가이샤 한도오따이 에네루기 켄큐쇼 반도체 장치
US10957237B2 (en) 2015-12-28 2021-03-23 Semiconductor Energy Laboratory Co., Ltd. Circuit, semiconductor device, display device, electronic device, and driving method of circuit
US9953695B2 (en) 2015-12-29 2018-04-24 Semiconductor Energy Laboratory Co., Ltd. Semiconductor device, electronic device, and semiconductor wafer
US10115741B2 (en) 2016-02-05 2018-10-30 Semiconductor Energy Laboratory Co., Ltd. Semiconductor device and electronic device
US10250247B2 (en) 2016-02-10 2019-04-02 Semiconductor Energy Laboratory Co., Ltd. Semiconductor device, electronic component, and electronic device
WO2018016178A1 (ja) * 2016-07-20 2018-01-25 三菱電機株式会社 シフトレジスタ回路および表示パネル
CN111316423B (zh) 2017-11-24 2025-02-14 株式会社半导体能源研究所 半导体装置及动态逻辑电路

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004222256A (ja) * 2002-12-25 2004-08-05 Semiconductor Energy Lab Co Ltd 半導体装置およびこれを用いた表示装置並びに電子機器
JP2008141091A (ja) * 2006-12-05 2008-06-19 Seiko Epson Corp 半導体装置および電気光学装置
JP2013062014A (ja) * 2011-08-24 2013-04-04 Semiconductor Energy Lab Co Ltd 半導体装置
JP2015014786A (ja) * 2013-06-05 2015-01-22 株式会社半導体エネルギー研究所 順序回路、半導体装置
JP2017518641A (ja) * 2014-05-29 2017-07-06 スナップトラック・インコーポレーテッド 高密度蓄積キャパシタを有するトランジスタの作製

Also Published As

Publication number Publication date
US20230125324A1 (en) 2023-04-27
CN114730807A (zh) 2022-07-08
WO2021105828A1 (ja) 2021-06-03
JP2025105640A (ja) 2025-07-10
US12453180B2 (en) 2025-10-21
US20260033001A1 (en) 2026-01-29

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