KR102467402B1 - 실리콘 결정화 방법 및 박막 트랜지스터 기판의 제조방법 - Google Patents
실리콘 결정화 방법 및 박막 트랜지스터 기판의 제조방법 Download PDFInfo
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- KR102467402B1 KR102467402B1 KR1020150179397A KR20150179397A KR102467402B1 KR 102467402 B1 KR102467402 B1 KR 102467402B1 KR 1020150179397 A KR1020150179397 A KR 1020150179397A KR 20150179397 A KR20150179397 A KR 20150179397A KR 102467402 B1 KR102467402 B1 KR 102467402B1
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- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 38
- 239000010703 silicon Substances 0.000 title claims abstract description 38
- 239000000758 substrate Substances 0.000 title claims description 28
- 238000000034 method Methods 0.000 title claims description 26
- 239000010409 thin film Substances 0.000 title description 27
- 238000004519 manufacturing process Methods 0.000 title description 13
- 230000001629 suppression Effects 0.000 claims abstract description 72
- 229910021417 amorphous silicon Inorganic materials 0.000 claims abstract description 48
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract description 41
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 37
- 238000002425 crystallisation Methods 0.000 claims abstract description 24
- 230000001678 irradiating effect Effects 0.000 claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims description 28
- 239000002184 metal Substances 0.000 claims description 28
- 229920005591 polysilicon Polymers 0.000 claims description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 12
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 12
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 12
- 229910044991 metal oxide Inorganic materials 0.000 claims description 10
- 150000004706 metal oxides Chemical class 0.000 claims description 10
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 8
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 claims description 5
- 150000004767 nitrides Chemical class 0.000 claims description 5
- 150000002500 ions Chemical class 0.000 claims description 4
- 238000000059 patterning Methods 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 151
- 229920002120 photoresistant polymer Polymers 0.000 description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 9
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 9
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 8
- 239000010949 copper Substances 0.000 description 8
- 239000011777 magnesium Substances 0.000 description 8
- 239000002356 single layer Substances 0.000 description 8
- 239000010936 titanium Substances 0.000 description 8
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 7
- 238000001816 cooling Methods 0.000 description 7
- 239000012535 impurity Substances 0.000 description 7
- 229910052750 molybdenum Inorganic materials 0.000 description 7
- 239000011733 molybdenum Substances 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 239000011651 chromium Substances 0.000 description 6
- 239000010931 gold Substances 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 5
- -1 polyethylene tetraphthalate Polymers 0.000 description 5
- 229910052719 titanium Inorganic materials 0.000 description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- UMIVXZPTRXBADB-UHFFFAOYSA-N benzocyclobutene Chemical compound C1=CC=C2CCC2=C1 UMIVXZPTRXBADB-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 229910000449 hafnium oxide Inorganic materials 0.000 description 4
- WIHZLLGSGQNAGK-UHFFFAOYSA-N hafnium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Hf+4] WIHZLLGSGQNAGK-UHFFFAOYSA-N 0.000 description 4
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 229910052749 magnesium Inorganic materials 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 150000002894 organic compounds Chemical class 0.000 description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 4
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 4
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 4
- 229910001936 tantalum oxide Inorganic materials 0.000 description 4
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 4
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 4
- 239000011787 zinc oxide Substances 0.000 description 4
- 229910001928 zirconium oxide Inorganic materials 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 239000004642 Polyimide Substances 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 206010047571 Visual impairment Diseases 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 238000005468 ion implantation Methods 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 229920001721 polyimide Polymers 0.000 description 3
- 239000010453 quartz Substances 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- 239000010937 tungsten Substances 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 229910052733 gallium Inorganic materials 0.000 description 2
- 229910003437 indium oxide Inorganic materials 0.000 description 2
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000005224 laser annealing Methods 0.000 description 2
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 2
- KYKLWYKWCAYAJY-UHFFFAOYSA-N oxotin;zinc Chemical compound [Zn].[Sn]=O KYKLWYKWCAYAJY-UHFFFAOYSA-N 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 2
- 229910001887 tin oxide Inorganic materials 0.000 description 2
- YUVHXHOPDQQZIV-UHFFFAOYSA-N 4-(4-anilinophenyl)-N-phenylaniline Chemical compound C1(=CC=CC=C1)NC1=CC=C(C2=CC=C(NC3=CC=CC=C3)C=C2)C=C1.C1(=CC=CC=C1)NC1=CC=C(C=C1)C1=CC=C(NC2=CC=CC=C2)C=C1 YUVHXHOPDQQZIV-UHFFFAOYSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- RBTKNAXYKSUFRK-UHFFFAOYSA-N heliogen blue Chemical compound [Cu].[N-]1C2=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=NC([N-]1)=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=N2 RBTKNAXYKSUFRK-UHFFFAOYSA-N 0.000 description 1
- 230000005525 hole transport Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 230000005527 interface trap Effects 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920000767 polyaniline Polymers 0.000 description 1
- 229920001230 polyarylate Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 229920002098 polyfluorene Polymers 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- TVIVIEFSHFOWTE-UHFFFAOYSA-K tri(quinolin-8-yloxy)alumane Chemical compound [Al+3].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 TVIVIEFSHFOWTE-UHFFFAOYSA-K 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
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- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02656—Special treatments
- H01L21/02664—Aftertreatments
- H01L21/02667—Crystallisation or recrystallisation of non-monocrystalline semiconductor materials, e.g. regrowth
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- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
- H01L21/02172—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides
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- 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
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- 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
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- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
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Abstract
Description
도 3a 및 3b는 본 발명의 일 실시예에 따른 실리콘 결정화 방법에 이용되는 돌기 억제 마스크를 도시한 평면도들이다.
도 6 및 도 7은 본 발명의 다른 실시예에 따른 실리콘 결정화 방법을 도시한 단면도들이다.
도 8 내지 도 21은 본 발명의 일 실시예에 따른 박막 트랜지스터 기판의 제조방법을 도시한 단면도들이다.
Claims (20)
- 비정질 실리콘층을 형성하는 단계;
상기 비정질 실리콘층의 상면의 일부와 접촉하는 돌기 억제 마스크를 제공하는 단계; 및
상기 비정질 실리콘층에 레이저를 조사하여 다결정 실리콘층을 형성하는 단계를 포함하는 실리콘 결정화 방법. - 제1항에 있어서, 상기 돌기 억제 마스크는 실리콘보다 밴드 갭이 높은 물질을 포함하는 것을 특징으로 하는 실리콘 결정화 방법.
- 제2항에 있어서, 상기 돌기 억제 마스크는, 실리콘 산화물, 실리콘 질화물, 실리콘 탄화물, 금속 산화물 및 금속 질화물로 이루어진 그룹에서 선택된 적어도 하나를 포함하는 것을 특징으로 하는 실리콘 결정화 방법.
- 제1항에 있어서, 상기 돌기 억제 마스크는, 평면도 상에서, 매트릭스 형상을 갖는 것을 특징으로 하는 실리콘 결정화 방법.
- 제1항에 있어서, 상기 돌기 억제 마스크는, 평면도 상에서, 와이어 그리드 어레이 형상을 갖는 것을 특징으로 하는 실리콘 결정화 방법.
- 제1항에 있어서, 상기 돌기 억제 마스크는, 서로 이격되는 복수의 선형 패턴을 포함하며, 상기 선형 패턴들 간의 피치는 100nm 내지 10,000nm 인 것을 특징으로 하는 실리콘 결정화 방법.
- 제6항에 있어서, 상기 선형 패턴들의 폭은 10nm 내지 1,000nm인 것을 특징으로 하는 실리콘 결정화 방법.
- 제1항에 있어서, 상기 돌기 억제 마스크는 상기 비정질 실리콘층의 상면에 직접 형성되는 것을 특징으로 하는 실리콘 결정화 방법.
- 제1항에 있어서, 상기 돌기 억제 마스크는, 플레이트 형상의 몸체 및 상기 몸체로부터 돌출되어 상기 비정질 실리콘층의 상면과 접촉하는 돌기 억제 패턴을 포함하는 것을 특징으로 하는 실리콘 결정화 방법.
- 제1 항에 있어서, 상기 다결정 실리콘층의 그레인 경계는 상기 돌기 억제 마스크 아래에 형성되는 것을 특징으로 하는 실리콘 결정화 방법.
- 베이스 기판 위에 비정질 실리콘층을 형성하는 단계;
상기 비정질 실리콘층의 상면의 일부와 접촉하는 돌기 억제 마스크를 제공하는 단계; 및
상기 비정질 실리콘층에 레이저를 조사하여 다결정 실리콘층을 형성하는 단계;
상기 돌기 억제 마스크를 제거하는 단계;
상기 다결정 실리콘층을 패터닝하여 다결정 실리콘 패턴을 형성하는 단계;
상기 다결정 실리콘 패턴을 커버하는 절연층을 형성하는 단계;
상기 절연층 위에 게이트 금속층을 형성하는 단계;
상기 게이트 금속층을 패터닝하여 게이트 전극을 형성하는 단계; 및
상기 다결정 실리콘 패턴에 부분적으로 이온을 주입하여 소스 영역, 채널 영역 및 드레인 영역을 포함하는 액티브 패턴을 형성하는 단계를 포함하는 박막 트랜지스터 기판의 제조방법. - 제11항에 있어서, 상기 돌기 억제 마스크는 실리콘보다 밴드 갭이 높은 물질을 포함하는 것을 특징으로 하는 박막 트랜지스터 기판의 제조방법.
- 제12항에 있어서, 상기 돌기 억제 마스크는, 실리콘 산화물, 실리콘 질화물, 실리콘 탄화물, 금속 산화물 및 금속 질화물로 이루어진 그룹에서 선택된 적어도 하나를 포함하는 것을 특징으로 하는 박막 트랜지스터 기판의 제조방법.
- 제11항에 있어서, 상기 돌기 억제 마스크는, 평면도 상에서, 매트릭스 형상을 갖는 것을 특징으로 하는 박막 트랜지스터 기판의 제조방법.
- 제11항에 있어서, 상기 돌기 억제 마스크는, 평면도 상에서, 와이어 그리드 어레이 형상을 갖는 것을 특징으로 하는 박막 트랜지스터 기판의 제조방법.
- 제11항에 있어서, 상기 돌기 억제 마스크는, 서로 이격되는 복수의 선형 패턴을 포함하며, 상기 선형 패턴들 간의 피치는 100nm 내지 10,000nm 인 것을 특징으로 하는 박막 트랜지스터 기판의 제조방법.
- 제16항에 있어서, 상기 선형 패턴들의 폭은 10nm 내지 1,000nm인 것을 특징으로 하는 박막 트랜지스터 기판의 제조방법.
- 제11항에 있어서, 상기 돌기 억제 마스크는 상기 비정질 실리콘층의 상면에 직접 형성되는 것을 특징으로 하는 박막 트랜지스터 기판의 제조방법.
- 제11항에 있어서, 상기 돌기 억제 마스크는, 플레이트 형상의 몸체 및 상기 몸체로부터 돌출되어 상기 비정질 실리콘층의 상면과 접촉하는 돌기 억제 패턴을 포함하는 것을 특징으로 하는 박막 트랜지스터 기판의 제조방법.
- 제11 항에 있어서, 상기 다결정 실리콘층의 그레인 경계는 상기 돌기 억제 마스크 아래에 형성되는 것을 특징으로 하는 박막 트랜지스터 기판의 제조방법.
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