JP7414899B2 - 表示装置 - Google Patents
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- JP7414899B2 JP7414899B2 JP2022115423A JP2022115423A JP7414899B2 JP 7414899 B2 JP7414899 B2 JP 7414899B2 JP 2022115423 A JP2022115423 A JP 2022115423A JP 2022115423 A JP2022115423 A JP 2022115423A JP 7414899 B2 JP7414899 B2 JP 7414899B2
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- aluminum oxide
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- oxide semiconductor
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- 239000010408 film Substances 0.000 claims description 292
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 134
- 239000004065 semiconductor Substances 0.000 claims description 90
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 62
- 239000001301 oxygen Substances 0.000 claims description 62
- 229910052760 oxygen Inorganic materials 0.000 claims description 62
- 238000004544 sputter deposition Methods 0.000 claims description 31
- 239000000758 substrate Substances 0.000 claims description 31
- 229910052751 metal Inorganic materials 0.000 claims description 23
- 239000002184 metal Substances 0.000 claims description 23
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 22
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 22
- 230000003647 oxidation Effects 0.000 claims description 20
- 238000007254 oxidation reaction Methods 0.000 claims description 20
- 239000010409 thin film Substances 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 14
- 230000007704 transition Effects 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 238000000059 patterning Methods 0.000 claims description 8
- 239000004973 liquid crystal related substance Substances 0.000 description 24
- 239000010410 layer Substances 0.000 description 21
- 238000000137 annealing Methods 0.000 description 16
- 229910052782 aluminium Inorganic materials 0.000 description 15
- 239000011229 interlayer Substances 0.000 description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 13
- 229910052581 Si3N4 Inorganic materials 0.000 description 9
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000002161 passivation Methods 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 239000010936 titanium Substances 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 3
- 238000005468 ion implantation Methods 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052733 gallium Inorganic materials 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 238000005546 reactive sputtering Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 229910000789 Aluminium-silicon alloy Inorganic materials 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910016048 MoW Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- -1 Zinc Oxide Nitride Chemical class 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000386 microscopy Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000002207 thermal evaporation Methods 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
- TYHJXGDMRRJCRY-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) tin(4+) Chemical compound [O-2].[Zn+2].[Sn+4].[In+3] TYHJXGDMRRJCRY-UHFFFAOYSA-N 0.000 description 1
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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
- H01L27/1292—Multistep manufacturing methods using liquid deposition, e.g. printing
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- H01L29/66969—Multistep manufacturing processes of devices having semiconductor bodies not comprising group 14 or group 13/15 materials
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- 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
- G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
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- 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
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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
- H01L27/1222—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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- H01L29/24—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
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- 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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- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66742—Thin film unipolar transistors
- H01L29/6675—Amorphous silicon or polysilicon transistors
- H01L29/66757—Lateral single gate single channel transistors with non-inverted structure, i.e. the channel layer is formed before the gate
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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
- H01L29/78651—Silicon transistors
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
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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
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- 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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Description
Claims (7)
- 酸化物半導体とゲート電極との間に絶縁膜が形成された薄膜トランジスタの製造方法であって、
基板上に遮光膜を形成する工程と、
前記遮光膜の上に下地膜を形成する工程と、
前記下地膜の上に前記酸化物半導体を形成工程と、
前記酸化物半導体を覆って絶縁膜を形成する工程と、
前記絶縁膜の上にアルミニウム酸化膜を形成する工程と、
前記アルミニウム酸化膜の上にゲート電極用金属膜を形成する工程と、
前記アルミニウム酸化膜をパターニングする工程と、を有し、
前記アルミニウム酸化膜を形成する工程は、第1のアルミニウム酸化膜を形成する工程と、前記第1のアルミニウム酸化膜よりも酸素濃度が小さい第2のアルミニウム酸化膜を形成する工程を含むことを特徴とする薄膜トランジスタの製造方法。 - 前記第1のアルミニウム酸化膜の厚さよりも、前記第2のアルミニウム酸化膜の厚さを厚く形成することを特徴とする請求項1に記載の薄膜トランジスタの製造方法。
- 前記第1のアルミニウム酸化膜は酸化モードのスパッタリングで形成することを特徴とする請求項1に記載の薄膜トランジスタの製造方法。
- 前記第2のアルミニウム酸化膜は遷移モードのスパッタリングで形成することを特徴とする請求項1に記載の薄膜トランジスタの製造方法。
- 前記ゲート電極はAlを主体とする金属によって形成することを特徴とする請求項1に記載の薄膜トランジスタの製造方法。
- 前記絶縁膜はシリコン酸化膜によって形成することを特徴とする請求項1に記載の薄膜トランジスタの製造方法。
- 前記ゲート電極用金属膜は前記アルミニウム酸化膜をパターニングする工程でパターニングされることを特徴とする請求項1に記載の薄膜トランジスタの製造方法。
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JP2022115423A JP7414899B2 (ja) | 2017-10-26 | 2022-07-20 | 表示装置 |
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US (3) | US11133337B2 (ja) |
JP (2) | JP7109902B2 (ja) |
WO (1) | WO2019082465A1 (ja) |
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JP7109902B2 (ja) * | 2017-10-26 | 2022-08-01 | 株式会社ジャパンディスプレイ | 表示装置及びその製造方法 |
JP7534083B2 (ja) | 2019-11-26 | 2024-08-14 | 株式会社ジャパンディスプレイ | 薄膜トランジスタの製造方法 |
WO2023189487A1 (ja) * | 2022-03-30 | 2023-10-05 | 株式会社ジャパンディスプレイ | 半導体装置 |
Citations (10)
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JP2002280384A (ja) | 2001-03-19 | 2002-09-27 | Nippon Telegr & Teleph Corp <Ntt> | 薄膜形成方法 |
JP2011129865A (ja) | 2009-12-17 | 2011-06-30 | Korea Electronics Telecommun | 薄膜トランジスター、及びその形成方法 |
JP2012099757A (ja) | 2010-11-05 | 2012-05-24 | Sony Corp | 薄膜トランジスタおよびその製造方法 |
JP2014053590A (ja) | 2012-09-06 | 2014-03-20 | Samsung Display Co Ltd | 薄膜トランジスタ基板及びその製造方法 |
JP2014114497A (ja) | 2012-12-12 | 2014-06-26 | Ulvac Japan Ltd | スパッタ装置 |
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