KR102169684B1 - 박막 트랜지스터 표시판 및 그 제조 방법 - Google Patents
박막 트랜지스터 표시판 및 그 제조 방법 Download PDFInfo
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- KR102169684B1 KR102169684B1 KR1020140003547A KR20140003547A KR102169684B1 KR 102169684 B1 KR102169684 B1 KR 102169684B1 KR 1020140003547 A KR1020140003547 A KR 1020140003547A KR 20140003547 A KR20140003547 A KR 20140003547A KR 102169684 B1 KR102169684 B1 KR 102169684B1
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- 239000010409 thin film Substances 0.000 title claims abstract description 46
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 238000000034 method Methods 0.000 title description 9
- 239000010410 layer Substances 0.000 claims abstract description 240
- 239000004065 semiconductor Substances 0.000 claims abstract description 68
- 239000004020 conductor Substances 0.000 claims abstract description 43
- 239000000758 substrate Substances 0.000 claims abstract description 14
- 239000011241 protective layer Substances 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims description 54
- 239000002184 metal Substances 0.000 claims description 54
- 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
- 230000001681 protective effect Effects 0.000 claims description 20
- 239000010936 titanium Substances 0.000 claims description 19
- 239000010949 copper Substances 0.000 claims description 16
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 15
- 229910052719 titanium Inorganic materials 0.000 claims description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 14
- 229910052802 copper Inorganic materials 0.000 claims description 14
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 13
- 230000004888 barrier function Effects 0.000 claims description 13
- 239000011810 insulating material Substances 0.000 claims description 13
- 229910052750 molybdenum Inorganic materials 0.000 claims description 13
- 239000011733 molybdenum Substances 0.000 claims description 13
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052709 silver Inorganic materials 0.000 claims description 10
- 239000004332 silver Substances 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 9
- 239000001301 oxygen Substances 0.000 claims description 9
- 229910052760 oxygen Inorganic materials 0.000 claims description 9
- 239000010408 film Substances 0.000 claims description 8
- 229920002120 photoresistant polymer Polymers 0.000 description 16
- 238000002161 passivation Methods 0.000 description 14
- 239000004973 liquid crystal related substance Substances 0.000 description 10
- 150000002739 metals Chemical class 0.000 description 9
- 229910018487 Ni—Cr Inorganic materials 0.000 description 8
- 229910052581 Si3N4 Inorganic materials 0.000 description 8
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 8
- 229910044991 metal oxide Inorganic materials 0.000 description 8
- 150000004706 metal oxides Chemical class 0.000 description 8
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 8
- 230000000903 blocking effect Effects 0.000 description 7
- 239000011651 chromium Substances 0.000 description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 229910052804 chromium Inorganic materials 0.000 description 5
- 238000005530 etching Methods 0.000 description 5
- 238000009832 plasma treatment Methods 0.000 description 5
- 239000002356 single layer Substances 0.000 description 5
- 229910052715 tantalum Inorganic materials 0.000 description 5
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc oxide Inorganic materials [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 5
- 239000011787 zinc oxide Substances 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 239000003086 colorant Substances 0.000 description 4
- 239000011572 manganese Substances 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 3
- 229910001182 Mo alloy Inorganic materials 0.000 description 3
- 229910001069 Ti alloy Inorganic materials 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 3
- -1 molybdenum (Mo) Chemical class 0.000 description 3
- 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
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 2
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 2
- HPDFFVBPXCTEDN-UHFFFAOYSA-N copper manganese Chemical compound [Mn].[Cu] HPDFFVBPXCTEDN-UHFFFAOYSA-N 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- JAONJTDQXUSBGG-UHFFFAOYSA-N dialuminum;dizinc;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Al+3].[Zn+2].[Zn+2] JAONJTDQXUSBGG-UHFFFAOYSA-N 0.000 description 2
- 238000009792 diffusion process Methods 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
- 229910000623 nickel–chromium alloy Inorganic materials 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 2
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- 229910000914 Mn alloy Inorganic materials 0.000 description 1
- 229910001362 Ta alloys Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000004380 ashing Methods 0.000 description 1
- 239000000788 chromium alloy Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
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Abstract
Description
도 2는 도 1의 II-II 선을 따라 자른 단면의 일 예를 나타내는 단면도이다.
도 3 내지 도 12는 본 발명의 일 실시예에 따른 박막 트랜지스터 표시판의 제조 방법을 나타내는 단면도이다.
도 13은 본 발명의 일 실시예에 따른 액정 표시 장치를 나타내는 단면도이다.
121: 게이트선 124: 게이트 전극
140: 게이트 절연층 150: 산화물층
151: 반도체층 154: 반도체층의 돌출부
170: 데이터 도전체 171: 데이터선
173: 소스 전극 175: 게이트 전극
180: 보호막 181: 평탄화막
50, 51: 감광막 패턴 80: 보호 절연층
81, 82: 측벽부 A, B: 측면부
Claims (20)
- 기판 위에 위치하며, 게이트선 및 게이트 전극을 포함하는 게이트 도전체;
상기 게이트 전극과 중첩하며, 산화물 반도체를 포함하는 반도체층;
상기 게이트선과 교차하는 데이터선, 상기 데이터선에 연결되어 있는 소스 전극 및 상기 소스 전극과 마주보는 드레인 전극을 포함하는 데이터 도전체;
반도체층의 채널 영역에 인접하는 상기 소스 전극 및 상기 드레인 전극의 측면부를 덮는 제1 측벽부;
상기 채널 영역에 인접하지 않는 상기 소스 전극 및 상기 드레인 전극의 측면부와 상기 반도체층의 측면부를 덮는 제2 측벽부; 및
상기 소스 전극, 상기 드레인 전극, 상기 제1 측벽부 및 상기 제2 측벽부를 덮는 보호막;
을 포함하는 박막 트랜지스터 표시판. - 제1항에서,
상기 제1 측벽부는 상부에서 하부로 갈수록 두께가 증가하는 박막 트랜지스터 표시판. - 제2항에서,
상기 제1 측벽부는 가장 두꺼운 부분의 두께가 2000 옹스트롬 이상인 박막 트랜지스터 표시판. - 제3항에서,
상기 제1 측벽부는 전체 높이의 중간 높이 부근의 두께가 1000 옹스트롬 이상인 박막 트랜지스터 표시판. - 제4항에서,
상기 제1 측벽부는 무기 절연 물질을 포함하는 박막 트랜지스터 표시판. - 제5항에서,
상기 제1 측벽부는 산화규소를 포함하는 박막 트랜지스터 표시판. - 제1항에서,
상기 반도체층은 3가 원소, 2가 원소 및 산소를 포함하는 최소 3원계 이상의 반도체 산화물을 포함하는 박막 트랜지스터 표시판. - 제1항에서,
상기 데이터 도전체는 배리어층, 주배선층 및 캡핑층을 포함하고, 상기 주배선층은 구리 계열 금속, 알루미늄 계열 금속, 은 계열 금속, 몰리브덴 계열 금속 및 티타늄 계열 금속에서 선택된 금속을 포함하는 박막 트랜지스터 표시판. - 제1항에서,
상기 보호막은 산화규소를 포함하는 박막 트랜지스터 표시판. - 제1항에서,
상기 반도체층은 채널 영역을 제외하고 상기 소스 전극, 상기 드레인 전극 및 상기 데이터선과 동일한 평면 패턴을 갖는 박막 트랜지스터 표시판. - 기판 위에 위치하며, 게이트선 및 게이트 전극을 포함하는 게이트 도전체를 형성하는 단계;
상기 게이트 도전체 위에 게이트 절연층을 형성하는 단계;
상기 게이트 절연층 위에 산화물 반도체를 포함하는 반도체층을 형성하는 단계;
상기 반도체층 위에 소스 전극 및 드레인 전극을 포함하는 데이터 도전체를 형성하는 단계;
상기 데이터 도전체 위에 절연층을 형성하는 단계;
상기 절연층의 일부를 제거하고 일부는 남겨, 상기 반도체층의 채널 영역에 인접하는 상기 소스 전극 및 상기 게이트 전극의 측면부를 덮는 제1 측벽부, 그리고 상기 채널 영역에 인접하지 않는 상기 소스 전극 및 상기 드레인 전극의 측면부와 상기 반도체층의 측면부를 덮는 제2 측벽부를 포함하는 측벽부를 형성하는 단계; 및
상기 소스 전극, 상기 드레인 전극 및 상기 측벽부를 덮는 보호막을 형성하는 단계;
를 포함하는 박막 트랜지스터 표시판의 제조 방법. - 제11항에서,
상기 측벽부를 형성한 후 상기 보호막을 형성하기 전에, 플라즈마로 처리하는 단계를 더 포함하는 박막 트랜지스터 표시판의 제조 방법. - 제12항에서,
상기 절연층은 2000 옹스트롬 이상의 두께로 형성되는 박막 트랜지스터 표시판의 제조 방법. - 제13항에서,
상기 절연층은 산화규소를 포함하는 박막 트랜지스터 표시판의 제조 방법. - 제14항에서,
상기 측벽부를 형성하기 위해 상기 절연층의 일부를 제거하는 것은 드라이 에치백에 의해 수행되는 박막 트랜지스터 표시판의 제조 방법. - 제14항에서,
상기 측벽부를 형성하기 위해 상기 절연층의 일부를 제거하는 것은 상기 반도체층의 채널 영역 위에도 상기 절연층의 일부가 남아 있도록 상기 절연층을 제거하는 박막 트랜지스터 표시판의 제조 방법. - 제11항에서,
상기 반도체층은 3가 원소, 2가 원소 및 산소를 포함하는 최소 3원계 이상의 반도체 산화물을 포함하는 박막 트랜지스터 표시판의 제조 방법. - 제11항에서,
상기 데이터 도전체는 구리 계열 금속, 알루미늄 계열 금속, 은 계열 금속, 몰리브덴 계열 금속 및 티타늄 계열 금속에서 선택된 금속을 포함하는 박막 트랜지스터 표시판의 제조 방법. - 제11항에서,
상기 반도체층을 형성하는 단계와 상기 데이터 도전체를 형성하는 단계는 하나의 마스크를 사용하여 동시에 수행되는 박막 트랜지스터 표시판의 제조 방법. - 삭제
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