JP5393058B2 - 電界効果型トランジスタ - Google Patents
電界効果型トランジスタ Download PDFInfo
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- 230000005669 field effect Effects 0.000 title claims description 43
- 239000000203 mixture Substances 0.000 claims description 52
- 229910052710 silicon Inorganic materials 0.000 claims description 33
- 229910052738 indium Inorganic materials 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 27
- 238000004544 sputter deposition Methods 0.000 claims description 13
- 229910052725 zinc Inorganic materials 0.000 claims description 6
- 150000004767 nitrides Chemical class 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 2
- 239000010408 film Substances 0.000 description 77
- 239000010409 thin film Substances 0.000 description 58
- 108091006146 Channels Proteins 0.000 description 55
- 239000000758 substrate Substances 0.000 description 43
- 238000000034 method Methods 0.000 description 32
- 230000015572 biosynthetic process Effects 0.000 description 15
- 239000007789 gas Substances 0.000 description 15
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 11
- 229910052760 oxygen Inorganic materials 0.000 description 11
- 239000010703 silicon Substances 0.000 description 11
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 11
- 230000008859 change Effects 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000004065 semiconductor Substances 0.000 description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 8
- 229910007541 Zn O Inorganic materials 0.000 description 8
- 229910004298 SiO 2 Inorganic materials 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
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- 238000011156 evaluation Methods 0.000 description 5
- 239000011521 glass Substances 0.000 description 5
- 108091006149 Electron carriers Proteins 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000000206 photolithography Methods 0.000 description 4
- 238000000391 spectroscopic ellipsometry Methods 0.000 description 4
- 229910018557 Si O Inorganic materials 0.000 description 3
- 229910020923 Sn-O Inorganic materials 0.000 description 3
- 229910021417 amorphous silicon Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 229910052733 gallium Inorganic materials 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000000059 patterning Methods 0.000 description 3
- SLIUAWYAILUBJU-UHFFFAOYSA-N pentacene Chemical compound C1=CC=CC2=CC3=CC4=CC5=CC=CC=C5C=C4C=C3C=C21 SLIUAWYAILUBJU-UHFFFAOYSA-N 0.000 description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 229920002799 BoPET Polymers 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 102000004129 N-Type Calcium Channels Human genes 0.000 description 2
- 108090000699 N-Type Calcium Channels Proteins 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
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- 238000010438 heat treatment Methods 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- 229910018516 Al—O Inorganic materials 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
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- 238000005566 electron beam evaporation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
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- 238000009413 insulation Methods 0.000 description 1
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- 238000003475 lamination Methods 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 238000004876 x-ray fluorescence Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- 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
- H01L29/7869—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
- H01L29/78693—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 the semiconducting oxide being amorphous
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- 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
- H01L29/7869—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
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/08—Oxides
- C23C14/086—Oxides of zinc, germanium, cadmium, indium, tin, thallium or bismuth
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/324—Thermal treatment for modifying the properties of semiconductor bodies, e.g. annealing, sintering
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- 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
- H01L29/78606—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
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Thin Film Transistor (AREA)
- Dram (AREA)
Description
K.Nomura et. al, Nature VOL. 432, P. 488-492 (2004-11) Applied Physics Letters 89,062103(2006) Solid-State Electronics 50 (2006) 500-503
まず、本発明の酸化物薄膜トランジスタの構成について説明する。
本実施形態の薄膜トランジスタは、そのチャネル層にインジウムとシリコンを含有するアモルファス酸化物を適用することに特徴がある。
本実施形態に適用しうるトランジスタにおいて、ゲート絶縁層12の材料は良好な絶縁性を有するものであれば、特に制約はない。特に、ゲート絶縁層12としてシリコンを主成分として含有する薄膜を用いると、薄膜トランジスタの特性が良好であり、好ましい。
ソース電極13、ドレイン電極14、ゲート電極15の材料は、良好な電気伝導性とチャネル層への電気接続を可能とするものであれば特に制約はない。
基板10としては、ガラス基板、プラスチック基板、プラスチックフィルムなどを用いることができる。
酸化物薄膜の成膜法としては、スパッタ法(SP法)、パルスレーザー蒸着法(PLD法)及び電子ビーム蒸着法などの気相法を用いることが挙げられる。なお、気相法の中でも、量産性の点からは、SP法が適している。しかし、成膜法は、これらの方法に限られるものではない。
ここで、図7を用いて、本実施形態の電界効果型トランジスタの特性について説明しておく。
(実施例1)
本実施例は、In−Si−O系のアモルファス酸化物からなるチャネル層を用い図3(a)に示すトップゲート型TFT素子を作製した例である。
図7に、室温下で測定したTFT素子の電流−電圧特性の一例を示す。
本実施例はInとSiを主成分として含有するチャネル層を用いた薄膜トランジスタにおいて、InとSiの組成依存性を検討した例である。
本実施例では、アモルファスIn−Zn−Si−O酸化物半導体をチャネル層に適用した例である。
PETフィルム上に形成したTFTの室温下で測定する。トランジスタのオン・オフ比は、109以上である。また、電界効果移動度を算出したところ、約7cm2(Vs)−1の電界効果移動度である。
11 チャネル層
12 絶縁層
13 ソース電極
14 ドレイン電極
15 ゲート電極
Claims (7)
- ゲート電極と、ソース電極と、ドレイン電極と、チャネル層と、を備え、
前記ゲート電極に電圧を加えて、前記ソース電極と前記ドレイン電極の間に流れる電流を制御する電界効果型トランジスタにおいて、
前記チャネル層を構成するアモルファス酸化物がInとSiを含み、Si/(In+Si)で表される組成比率が0.05以上0.40以下であることを特徴とする電界効果型トランジスタ。 - 前記Si/(In+Si)で表される組成比率が、0.15以上0.30以下であることを特徴とする請求項1記載の電界効果型トランジスタ。
- 前記Si/(In+Si)で表される組成比率が、0.15以上0.23以下であることを特徴とする請求項2記載の電界効果型トランジスタ。
- ゲート電極と、ソース電極と、ドレイン電極と、チャネル層と、を備え、
前記ゲート電極に電圧を加えて、前記ソース電極と前記ドレイン電極の間に流れる電流を制御する電界効果型トランジスタにおいて、
前記チャネル層を構成するアモルファス酸化物材料がInとZnとSiを含み、Si/(In+Zn+Si)で表されるSiの組成比率が0.05以上0.40以下であることを特徴とする電界効果型トランジスタ。
- ゲート電極と、ソース電極と、ドレイン電極と、チャネル層と、該チャネル層に接したゲート絶縁層と、を備え、
前記ゲート電極に電圧を加えて、前記ソース電極と前記ドレイン電極の間に流れる電流を制御する電界効果型トランジスタにおいて、
前記チャネル層を構成する酸化物材料がInとSiを含み、Si/(In+Si)で表される組成比率が0.05以上0.40以下であり、前記ゲート絶縁層がSiを含む酸化物又は窒化物であることを特徴とする電界効果型トランジスタ。 - 前記ゲート絶縁層が酸化シリコンであることを特徴とする請求項5記載の電界効果型トランジスタ。
- 前記チャネル層及び前記ゲート絶縁層は、スパッタリング法により成膜されることを特徴とする請求項6記載の電界効果型トランジスタ。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008146890A JP5393058B2 (ja) | 2007-09-05 | 2008-06-04 | 電界効果型トランジスタ |
CN2008801052542A CN101796644B (zh) | 2007-09-05 | 2008-08-29 | 场效应晶体管 |
PCT/JP2008/066021 WO2009031634A1 (en) | 2007-09-05 | 2008-08-29 | Field effect transistor |
EP08829702A EP2193547B1 (en) | 2007-09-05 | 2008-08-29 | Field effect transistor |
KR1020107006787A KR101352159B1 (ko) | 2007-09-05 | 2008-08-29 | 전계 효과형 트랜지스터 |
US12/671,052 US8188471B2 (en) | 2007-09-05 | 2008-08-29 | Field effect transistor |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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JP2007230381 | 2007-09-05 | ||
JP2007230381 | 2007-09-05 | ||
JP2008146890A JP5393058B2 (ja) | 2007-09-05 | 2008-06-04 | 電界効果型トランジスタ |
Publications (2)
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JP2009081413A JP2009081413A (ja) | 2009-04-16 |
JP5393058B2 true JP5393058B2 (ja) | 2014-01-22 |
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Application Number | Title | Priority Date | Filing Date |
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JP2008146890A Expired - Fee Related JP5393058B2 (ja) | 2007-09-05 | 2008-06-04 | 電界効果型トランジスタ |
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Country | Link |
---|---|
US (1) | US8188471B2 (ja) |
EP (1) | EP2193547B1 (ja) |
JP (1) | JP5393058B2 (ja) |
KR (1) | KR101352159B1 (ja) |
CN (1) | CN101796644B (ja) |
WO (1) | WO2009031634A1 (ja) |
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Publication number | Priority date | Publication date | Assignee | Title |
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US8492756B2 (en) * | 2009-01-23 | 2013-07-23 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device and method for manufacturing the same |
EP2256814B1 (en) * | 2009-05-29 | 2019-01-16 | Semiconductor Energy Laboratory Co, Ltd. | Oxide semiconductor device and method for manufacturing the same |
WO2011027591A1 (ja) * | 2009-09-07 | 2011-03-10 | シャープ株式会社 | 酸化物半導体、薄膜トランジスタ及び表示装置 |
KR20180031077A (ko) * | 2009-09-24 | 2018-03-27 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 반도체 장치 및 그 제조 방법 |
KR20120084751A (ko) | 2009-10-05 | 2012-07-30 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 반도체 장치 및 그 제작 방법 |
EP2486569B1 (en) | 2009-10-09 | 2019-11-20 | Semiconductor Energy Laboratory Co., Ltd. | Shift register and display device |
KR101928402B1 (ko) | 2009-10-30 | 2018-12-12 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 반도체 장치 및 반도체 장치의 제작방법 |
WO2011070887A1 (en) | 2009-12-11 | 2011-06-16 | Semiconductor Energy Laboratory Co., Ltd. | Field effect transistor |
WO2011093506A1 (ja) * | 2010-02-01 | 2011-08-04 | 日本電気株式会社 | アモルファス酸化物薄膜、これを用いた薄膜トランジスタ及びその製造方法 |
JP2011181590A (ja) * | 2010-02-26 | 2011-09-15 | Technology Research Association For Advanced Display Materials | 有機elディスプレイ及び有機elディスプレイの製造方法 |
US8894825B2 (en) | 2010-12-17 | 2014-11-25 | Semiconductor Energy Laboratory Co., Ltd. | Sputtering target, method for manufacturing the same, manufacturing semiconductor device |
CN202307906U (zh) * | 2011-06-15 | 2012-07-04 | 广东中显科技有限公司 | 一种用于测试SiNx绝缘层的MIM结构器件 |
WO2013005380A1 (en) * | 2011-07-01 | 2013-01-10 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device and manufacturing method thereof |
US9385238B2 (en) * | 2011-07-08 | 2016-07-05 | Semiconductor Energy Laboratory Co., Ltd. | Transistor using oxide semiconductor |
KR101239231B1 (ko) * | 2011-07-22 | 2013-03-11 | 한국과학기술연구원 | 금속을 포함하는 패시배이션 층을 갖는 박막 트랜지스터 및 그 제조 방법 |
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KR102504604B1 (ko) | 2011-09-29 | 2023-02-27 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 반도체 장치 |
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JP5116290B2 (ja) | 2006-11-21 | 2013-01-09 | キヤノン株式会社 | 薄膜トランジスタの製造方法 |
KR100982395B1 (ko) * | 2007-04-25 | 2010-09-14 | 주식회사 엘지화학 | 박막 트랜지스터 및 이의 제조방법 |
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KR20100061511A (ko) | 2010-06-07 |
JP2009081413A (ja) | 2009-04-16 |
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