KR20140060679A - 액정표시장치용 어레이 기판의 제조방법 - Google Patents
액정표시장치용 어레이 기판의 제조방법 Download PDFInfo
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- KR20140060679A KR20140060679A KR1020120127269A KR20120127269A KR20140060679A KR 20140060679 A KR20140060679 A KR 20140060679A KR 1020120127269 A KR1020120127269 A KR 1020120127269A KR 20120127269 A KR20120127269 A KR 20120127269A KR 20140060679 A KR20140060679 A KR 20140060679A
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- 239000000758 substrate Substances 0.000 title claims description 30
- 239000004973 liquid crystal related substance Substances 0.000 title claims description 13
- 238000004519 manufacturing process Methods 0.000 title description 8
- 239000000203 mixture Substances 0.000 claims abstract description 65
- 239000010949 copper Substances 0.000 claims abstract description 60
- 229910052751 metal Inorganic materials 0.000 claims abstract description 59
- 239000002184 metal Substances 0.000 claims abstract description 59
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 57
- 229910052802 copper Inorganic materials 0.000 claims abstract description 56
- 238000005530 etching Methods 0.000 claims abstract description 41
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 15
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- 239000000463 material Substances 0.000 claims description 6
- 239000010409 thin film Substances 0.000 claims description 6
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- 238000005260 corrosion Methods 0.000 claims description 2
- 239000003112 inhibitor Substances 0.000 claims description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims 1
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical compound OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 claims 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims 1
- 239000010452 phosphate Substances 0.000 claims 1
- 239000003352 sequestering agent Substances 0.000 claims 1
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- 239000002356 single layer Substances 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 11
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- WUUZKBJEUBFVMV-UHFFFAOYSA-N copper molybdenum Chemical compound [Cu].[Mo] WUUZKBJEUBFVMV-UHFFFAOYSA-N 0.000 description 5
- 229920002120 photoresistant polymer Polymers 0.000 description 5
- 239000011651 chromium Substances 0.000 description 4
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- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- RWRDLPDLKQPQOW-UHFFFAOYSA-N Pyrrolidine Chemical compound C1CCNC1 RWRDLPDLKQPQOW-UHFFFAOYSA-N 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000008367 deionised water Substances 0.000 description 3
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- 230000018109 developmental process Effects 0.000 description 3
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- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
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- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- 241000220259 Raphanus Species 0.000 description 2
- 235000006140 Raphanus sativus var sativus Nutrition 0.000 description 2
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- XXCJRGWARCULPA-UHFFFAOYSA-N 2-hydroxyacetic acid;phosphoric acid Chemical compound OCC(O)=O.OP(O)(O)=O XXCJRGWARCULPA-UHFFFAOYSA-N 0.000 description 1
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- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- CMGDVUCDZOBDNL-UHFFFAOYSA-N 4-methyl-2h-benzotriazole Chemical compound CC1=CC=CC2=NNN=C12 CMGDVUCDZOBDNL-UHFFFAOYSA-N 0.000 description 1
- NJQHZENQKNIRSY-UHFFFAOYSA-N 5-ethyl-1h-imidazole Chemical compound CCC1=CNC=N1 NJQHZENQKNIRSY-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
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- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
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- 150000003851 azoles Chemical class 0.000 description 1
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
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- 238000004140 cleaning Methods 0.000 description 1
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- 235000012208 gluconic acid Nutrition 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- PZOUSPYUWWUPPK-UHFFFAOYSA-N indole Natural products CC1=CC=CC2=C1C=CN2 PZOUSPYUWWUPPK-UHFFFAOYSA-N 0.000 description 1
- RKJUIXBNRJVNHR-UHFFFAOYSA-N indolenine Natural products C1=CC=C2CC=NC2=C1 RKJUIXBNRJVNHR-UHFFFAOYSA-N 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229910000402 monopotassium phosphate Inorganic materials 0.000 description 1
- 235000019796 monopotassium phosphate Nutrition 0.000 description 1
- 229910000403 monosodium phosphate Inorganic materials 0.000 description 1
- 235000019799 monosodium phosphate Nutrition 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003009 phosphonic acids Chemical class 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 238000001020 plasma etching Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- ZVJHJDDKYZXRJI-UHFFFAOYSA-N pyrroline Natural products C1CC=NC1 ZVJHJDDKYZXRJI-UHFFFAOYSA-N 0.000 description 1
- 230000007261 regionalization Effects 0.000 description 1
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000004148 unit process Methods 0.000 description 1
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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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K13/00—Etching, surface-brightening or pickling compositions
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- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
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Abstract
Description
도 2는 비교예 1의 식각액 조성물로 식각한 구리계 금속막의 SEM 이미지이다.
단위: 중량% |
H2O2 | ATZ | HEDP | 인산염 | 글리콜산 | 탈이온수 | pH |
실시예1 | 18 | 0.6 | 1.0 | 3.0 | - | 잔량 | 2.10 |
실시예2 | 19 | 0.6 | 5.0 | 1.0 | - | 잔량 | 1.65 |
비교예1 | 19 | 0.5 | 5.0 | 0.1 | - | 잔량 | 1.50 |
비교예2 | 21 | 0.5 | 5.0 | 1.0 | 1.0 | 잔량 | 1.17 |
시험예 | 식각액 | 식각 특성 | 배선 끊김 현상 |
Cu막 | Cu막 | ||
시험예1 | 실시예1 | O | 무 |
시험예2 | 실시예2 | O | 무 |
비교시험예1 | 비교예1 | O | 유 |
비교시험예2 | 비교예2 | O | 유 |
Claims (11)
- a)기판 상에 게이트 배선을 형성하는 단계;
b)상기 게이트 배선을 포함한 기판 상에 게이트 절연층을 형성하는 단계;
c)상기 게이트 절연층 상에 반도체층을 형성하는 단계;
d)상기 반도체층 상에 소스 및 드레인 전극을 형성하는 단계; 및
e)상기 드레인 전극에 연결된 화소전극을 형성하는 단계를 포함하는 액정표시장치용 어레이 기판의 제조방법에 있어서,
상기 a)단계는 기판 상에 구리계 금속막을 형성하고 상기 구리계 금속막을 식각액 조성물로 식각하여 게이트 배선을 형성하는 단계를 포함하며,
상기 d)단계는 반도체층 상에 구리계 금속막을 형성하고 상기 구리계 금속막을 식각액 조성물로 식각하여 소스 및 드레인 전극을 형성하는 단계를 포함하며,
상기 식각액 조성물은, 조성물 총 중량에 대하여, A)과산화수소(H2O2), B)pH조절제 및 C)물을 포함하는 구리계 금속막 식각액 조성물로서, 상기 조성물은 pH 가 1.6 ~ 3인 것을 특징으로 하는 액정표시장치용 어레이 기판의 제조방법. - 청구항 1에 있어서,
상기 액정표시장치용 어레이 기판은 박막트랜지스터(TFT) 어레이 기판인 것을 특징으로 하는 액정표시장치용 어레이 기판의 제조방법. - 청구항 1에 있어서,
상기 조성물은 pH가 1.6 ~ 2.4인 것을 특징으로 하는 액정표시장치용 어레이 기판의 제조방법. - A)과산화수소(H2O2),
B)pH조절제 및
C)물을 포함하는 구리계 금속막 식각액 조성물로서,
상기 조성물은 pH 가 1.6 ~ 3인 것을 특징으로 하는 구리계 금속막 식각액 조성물. - 청구항 4에 있어서,
상기 조성물은 pH가 1.6 ~ 2.4인 것을 특징으로 하는 구리계 금속막 식각액 조성물. - 청구항 4에 있어서, 상기 B)pH 조절제는 유기산, 무기산, 염, 아졸계 화합물 또는 수용성 시클릭 아민 화합물인 것을 특징으로 하는 구리계 금속막 식각액 조성물.
- 청구항 4에 있어서, 상기 B)pH 조절제는 1-히드록시에틸리덴-1,1-디포스포닉산(HEDP), 글리콜산, 포스폰산류, 인산염, 아미노테트라졸 또는 불화물인 것을 특징으로 하는 구리계 금속막 식각액 조성물.
- 청구항 4에 있어서, 상기 식각액 조성물은 금속이온 봉쇄제 또는 부식방지제를 더 포함하는 것을 특징으로 하는 식각액 조성물.
- Ⅰ)기판 상에 구리계 금속막을 형성하는 단계;
Ⅱ)상기 구리계 금속막 상에 선택적으로 광반응 물질을 남기는 단계; 및
Ⅲ)식각액 조성물을 사용하여 상기 구리계 금속막을 식각하는 단계를 포함하며,
상기 식각액 조성물은 A)과산화수소(H2O2), B)pH조절제 및 C)물을 포함하는 구리계 금속막 식각액 조성물로서, 상기 조성물은 pH 가 1.6 ~ 3인 것을 특징으로 하는 구리계 금속막의 식각방법. - 청구항 9에 있어서,
상기 조성물은 pH가 1.6 ~ 2.4인 것을 특징으로 하는 구리계 금속막의 식각방법. - 청구항 4의 식각액 조성물을 사용하여 식각된 소스 및 드레인 전극을 포함하는 액정표시장치용 어레이 기판.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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KR1020120127269A KR20140060679A (ko) | 2012-11-12 | 2012-11-12 | 액정표시장치용 어레이 기판의 제조방법 |
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KR20200114895A (ko) * | 2019-03-29 | 2020-10-07 | 동우 화인켐 주식회사 | 액정표시장치용 어레이 기판의 제조방법 |
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WO2011021860A2 (en) * | 2009-08-20 | 2011-02-24 | Dongwoo Fine-Chem Co., Ltd. | Method of fabricating array substrate for liquid crystal display |
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