KR102494732B1 - 박막 트랜지스터 표시판 및 그 제조 방법 - Google Patents
박막 트랜지스터 표시판 및 그 제조 방법 Download PDFInfo
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- KR102494732B1 KR102494732B1 KR1020150144680A KR20150144680A KR102494732B1 KR 102494732 B1 KR102494732 B1 KR 102494732B1 KR 1020150144680 A KR1020150144680 A KR 1020150144680A KR 20150144680 A KR20150144680 A KR 20150144680A KR 102494732 B1 KR102494732 B1 KR 102494732B1
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- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 26
- 239000011574 phosphorus Substances 0.000 claims abstract description 26
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- 229910052802 copper Inorganic materials 0.000 claims description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 18
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 18
- 229910044991 metal oxide Inorganic materials 0.000 claims description 14
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- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 claims description 13
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 12
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- 229910000881 Cu alloy Inorganic materials 0.000 claims description 7
- 239000011241 protective layer Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 229910000073 phosphorus hydride Inorganic materials 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
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- 238000009832 plasma treatment Methods 0.000 claims description 4
- 229920002120 photoresistant polymer Polymers 0.000 description 16
- 239000000463 material Substances 0.000 description 11
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- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 7
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- 239000003086 colorant Substances 0.000 description 4
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- 238000000059 patterning Methods 0.000 description 4
- 239000011787 zinc oxide Substances 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc oxide Inorganic materials [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
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- 239000011521 glass Substances 0.000 description 3
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- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 3
- 229910001316 Ag alloy Inorganic materials 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- 229910001182 Mo alloy Inorganic materials 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
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- 238000005530 etching Methods 0.000 description 2
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- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 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
- 239000011810 insulating material Substances 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 229910000476 molybdenum oxide Inorganic materials 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 2
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- 229910000914 Mn alloy Inorganic materials 0.000 description 1
- 229910004205 SiNX Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910001362 Ta alloys Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 238000004380 ashing Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000788 chromium alloy Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000001272 nitrous oxide Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
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Abstract
Description
도 2는 도 1의 II-II선을 따라 잘라 나타내는 단면도이다.
도 3 내지 도 10은 본 발명의 일실시예에 따른 박막 트랜지스터 표시판의 제조 방법을 나타내는 단면도들이다.
도 11은 본 발명의 일 실시예에 따른 액정 표시 장치를 나타내는 단면도이다.
도 12는 본 발명의 비교예에 따른 박막 트랜지스터의 게이트 전압에 따른 온 전류 특성을 나타낸 그래프이다.
도 13은 본 발명의 일 실시예에 따른 박막 트랜지스터의 게이트 전압에 따른 온 전류 특성을 나타낸 그래프이다.
도 14는 본 발명의 일 실시예에 따른 박막 트랜지스터 표시판의 단면도이다.
121: 게이트선 124: 게이트 전극
151: 반도체층 171: 데이터선
173: 소스 전극 175: 드레인 전극
177: 금속산화인층 180: 보호막
Claims (20)
- 기판,
상기 기판 위에 위치하고, 게이트 전극을 포함하는 게이트선,
상기 기판 위에 위치하고, 산화물 반도체를 포함하는 반도체층,
상기 게이트 전극과 상기 반도체층 사이에 위치하는 게이트 절연막,
상기 기판 위에 위치하는 소스 전극 및 상기 소스 전극과 마주보는 드레인 전극을 포함하는 데이터 배선층, 그리고
상기 소스 전극 및 상기 드레인 전극을 덮는 금속산화인층을 포함하는고,
상기 금속산화인층은 구리 계열 금속, 알루미늄 계열 금속, 은 계열 금속, 몰리브덴 계열 금속 및 티타늄 계열 금속에서 선택된 적어도 하나와 인, 그리고 산소를 포함하는 박막 트랜지스터 표시판. - 제1항에서,
상기 반도체층의 채널 영역은 인(P)을 포함하는 박막 트랜지스터 표시판. - 삭제
- 제2항에서,
상기 금속산화인층은 상기 소스 전극 및 상기 드레인 전극 각각의 상부면과 측면을 덮는 박막 트랜지스터 표시판. - 제1항에서,
상기 데이터 배선층과 상기 반도체층 사이에 위치하는 배리어층을 더 포함하는 박막 트랜지스터 표시판. - 제5항에서,
상기 데이터 배선층은 상기 반도체층의 채널영역을 노출하는 박막 트랜지스터 표시판. - 제6항에서,
상기 배리어층이 상기 반도체층의 채널영역을 노출하는 영역은 상기 데이터 배선층이 상기 반도체층의 채널영역을 노출하는 영역보다 좁은 박막 트랜지스터 표시판. - 제1항에서,
상기 금속산화인층, 상기 소스 전극 및 상기 드레인 전극을 덮는 보호막을 더 포함하는 박막 트랜지스터 표시판. - 제8항에서,
상기 보호막은 산화규소를 포함하는 박막 트랜지스터 표시판. - 제1항에서,
상기 반도체층, 상기 소스 전극 및 상기 드레인 전극의 가장자리 측면 부분과 상기 반도체층의 채널 영역을 노출하는 상기 소스 전극과 상기 드레인 전극의 측면 부분은 상기 기판에 대하여 10° 내지 80°의 각도를 갖도록 경사진 측면을 갖는 박막 트랜지스터 표시판. - 기판 위에 게이트 전극을 포함하는 게이트선을 형성하는 단계,
상기 기판 위에 반도체층을 형성하는 단계,
상기 기판 위에 위치하고, 상기 게이트선과 교차하는 데이터선, 상기 데이터선에 연결되는 소스 전극 및 상기 소스 전극과 마주보는 드레인 전극을 포함하는 데이터 배선층을 형성하는 단계,
상기 데이터 배선층을 포스핀(phosphine) 처리하는 단계 그리고
상기 데이터 배선층 위에 보호막을 형성하는 단계를 포함하고,
상기 보호막을 형성하는 단계는 상기 소스 전극 및 상기 드레인 전극을 덮는 금속산화인층을 형성하는 단계를 포함하고,
상기 금속산화인층은 구리 계열 금속, 알루미늄 계열 금속, 은 계열 금속, 몰리브덴 계열 금속 및 티타늄 계열 금속에서 선택된 적어도 하나와 인, 그리고 산소를 포함하는 박막 트랜지스터 표시판의 제조 방법. - 제11항에서,
상기 포스핀 처리하는 단계는 열처리 또는 플라즈마 처리로 이루어지는 박막 트랜지스터 표시판의 제조 방법. - 제11항에서,
상기 금속산화인층은 상기 소스 전극 및 상기 드레인 전극 각각의 상부면과 측면을 덮도록 형성하는 박막 트랜지스터 표시판의 제조 방법. - 제11항에서,
상기 데이터 배선층은 구리 계열 금속, 알루미늄 계열 금속, 은 계열 금속, 몰리브덴 계열 금속 및 티타늄 계열 금속 중에서 선택된 적어도 하나의 금속을 포함하는 박막 트랜지스터 표시판의 제조 방법. - 제11항에서,
상기 보호막은 산화규소를 포함하는 박막 트랜지스터 표시판의 제조 방법. - 제11항에서,
상기 반도체층을 형성하는 단계와 상기 데이터 배선층을 형성하는 단계는 하나의 마스크를 사용하여 동시에 수행되는 박막 트랜지스터 표시판의 제조 방법. - 제11항에서,
상기 반도체층을 형성하는 단계 이후에 상기 반도체층의 채널영역을 노출하는 배리어층을 형성하는 단계를 더 포함하는 박막 트랜지스터 표시판의 제조 방법. - 제17항에서,
상기 배리어층이 상기 반도체층의 채널영역을 노출하는 영역은 상기 데이터 배선층이 상기 반도체층의 채널영역을 노출하는 영역보다 좁게 형성하는 박막 트랜지스터 표시판의 제조 방법. - 제17항에서,
상기 배리어층은 금속 산화물로, 상기 데이터 배선층은 구리 또는 구리 합금으로 형성하는 박막 트랜지스터 표시판의 제조 방법. - 제11항에서,
상기 반도체층, 상기 데이터선 및 상기 드레인 전극의 가장자리 측면 부분과 상기 반도체층의 채널 영역을 노출하는 상기 소스 전극과 상기 드레인 전극의 측면 부분은 상기 기판에 대하여 10° 내지 80°의 각도를 갖도록 형성하는 박막 트랜지스터 표시판의 제조 방법.
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