KR102774331B1 - 표시장치 및 이의 제조방법 - Google Patents
표시장치 및 이의 제조방법 Download PDFInfo
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- KR102774331B1 KR102774331B1 KR1020200044288A KR20200044288A KR102774331B1 KR 102774331 B1 KR102774331 B1 KR 102774331B1 KR 1020200044288 A KR1020200044288 A KR 1020200044288A KR 20200044288 A KR20200044288 A KR 20200044288A KR 102774331 B1 KR102774331 B1 KR 102774331B1
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- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 194
- 239000002184 metal Substances 0.000 claims abstract description 194
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 27
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000010409 thin film Substances 0.000 claims abstract description 24
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 19
- 239000011733 molybdenum Substances 0.000 claims abstract description 19
- 239000010408 film Substances 0.000 claims description 39
- 229910044991 metal oxide Inorganic materials 0.000 claims description 32
- 150000004706 metal oxides Chemical class 0.000 claims description 32
- 238000005530 etching Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 16
- 239000010949 copper Substances 0.000 claims description 14
- 239000010936 titanium Substances 0.000 claims description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 229910052719 titanium Inorganic materials 0.000 claims description 8
- 239000010955 niobium Substances 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000002310 reflectometry Methods 0.000 claims description 5
- 239000003870 refractory metal Substances 0.000 claims description 5
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 3
- 239000005751 Copper oxide Substances 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910000431 copper oxide Inorganic materials 0.000 claims description 3
- QXYJCZRRLLQGCR-UHFFFAOYSA-N dioxomolybdenum Chemical compound O=[Mo]=O QXYJCZRRLLQGCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052735 hafnium Inorganic materials 0.000 claims description 3
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052758 niobium Inorganic materials 0.000 claims description 3
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 3
- JMOHEPRYPIIZQU-UHFFFAOYSA-N oxygen(2-);tantalum(2+) Chemical compound [O-2].[Ta+2] JMOHEPRYPIIZQU-UHFFFAOYSA-N 0.000 claims description 3
- 229910052702 rhenium Inorganic materials 0.000 claims description 3
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 claims description 3
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 3
- 238000001579 optical reflectometry Methods 0.000 abstract description 7
- 239000010410 layer Substances 0.000 description 310
- 239000004973 liquid crystal related substance Substances 0.000 description 22
- 239000000758 substrate Substances 0.000 description 17
- 239000004065 semiconductor Substances 0.000 description 16
- 239000000463 material Substances 0.000 description 10
- 238000001000 micrograph Methods 0.000 description 6
- 101100136063 Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv) PE11 gene Proteins 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 5
- 230000001590 oxidative effect Effects 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 229920002120 photoresistant polymer Polymers 0.000 description 4
- 238000000151 deposition Methods 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 239000002096 quantum dot Substances 0.000 description 1
- 238000000072 solvent casting and particulate leaching Methods 0.000 description 1
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- 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
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- 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
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Abstract
Description
도 1b는 본 발명의 일 실시예에 따른 표시장치의 평면도이다.
도 1c는 본 발명의 일 실시예에 따른 표시장치의 측면도이다.
도 2는 본 발명의 일 실시예에 따른 표시 장치를 간략히 도시한 블럭도이다.
도 3는 도 2에 도시된 일부 구성을 간략히 도시한 사시도이다.
도 4a는 본 발명의 일 실시예에 따른 표시 패널의 일부를 도시한 평면도이다.
도 4b는 도 3에 도시된 I-I’ 절단선을 따라 자른 단면도이다.
도 5a 및 도 5b는 본 발명의 일 실시예에 따른 표시 패널의 일부 구성의 단면도들이다.
도 6은 본 발명의 다른 실시예에 따른 표시 패널의 일부 구성의 단면도이다.
도 7은 본 발명의 일 실시예에 따른 표시 패널의 일부를 도시한 평면도이다.
도 8a 내지 도 8d는 본 발명의 일 실시예에 따른 표시 패널의 제조방법을 도시한 단면도들이다.
도 9는 실시예 및 비교예에 따른 신호라인의 단면의 현미경 이미지이다.
D1: 제1 데이터 라인 ML: 금속층
CPL: 캡핑층
Claims (20)
- 베이스층;
상기 베이스층 상에 배치되고 박막 트랜지스터 및 상기 박막 트랜지스터에 연결된 표시 소자를 포함하는 화소; 및
상기 화소에 연결된 복수의 신호라인들; 을 포함하고,
상기 복수의 신호라인들 중 적어도 어느 하나는,
금속층; 및
상기 금속층 상에 배치되고, 몰리브덴 및 탄탈럼을 포함하고, 상기 금속층의 광 반사율보다 낮은 광 반사율을 가지는 캡핑층을 포함하고,
상기 캡핑층은 상기 금속층의 측벽보다 돌출된 팁을 포함하고,
상기 팁은 평면상에서, 상기 금속층의 상기 측벽이 상기 베이스층과 접하는 대면 지점 이상으로 돌출되는 표시장치. - 제1항에 있어서,
상기 팁이 상기 금속층의 상기 측벽보다 돌출된 길이를 d로 정의할 때,
상기 d는 하기 식 1을 만족하는 표시장치:
[식 1]
d ≥ h/(tan(90˚-θα)) + h/(tan(θβ))
상기 식 1에서, h는 상기 금속층의 두께이고, θα는 상기 표시장치의 최외곽부 시야각이고, θβ는 상기 금속층의 테이퍼각(Taper angle)이다. - 제2항에 있어서,
상기 d는 4000 Å 이상 6000 Å 이하인 표시장치. - 제2항에 있어서,
상기 h는 5000 Å 이상 10000 Å 이하인 표시장치. - 제1항에 있어서,
상기 캡핑층에서 상기 몰리브덴과 상기 탄탈럼의 함량비는 80:20 내지 97:3인 표시장치. - 제1항에 있어서,
상기 캡핑층은 400nm 이상 800nm 이하의 파장 영역에서 평균 반사율이 20% 이하 이고,
상기 캡핑층의 두께는 500Å 이상 1500Å 이하인 표시장치. - 제1항에 있어서,
상기 캡핑층은 산화몰리브덴(MoO2) 및 산화탄탈럼(TaO)을 포함하는 표시장치. - 제1항에 있어서,
상기 금속층은 제1 금속을 포함하는 제1 금속층, 및 상기 제1 금속과 상이한 제2 금속을 포함하는 제2 금속층이 순차적으로 적층된 표시장치. - 제8항에 있어서,
상기 제1 금속층은 니오브(Nb), 바나듐(V), 탄탈럼(Ta), 티타늄(Ti), 지르코늄(Zr), 하프늄(Hf), 몰리브덴(Mo), 레늄(Re) 또는 텅스텐(W) 등의 내화 금속을 포함하고, 상기 제2 금속층은 구리(Cu), 은(Ag), 알루미늄(Al) 또는 이들의 합금을 포함하는 표시장치. - 제1항에 있어서,
상기 금속층은 금속을 포함하는 금속층 본체; 및
상기 금속층 본체의 측면에 배치되고, 상기 금속층의 상기 측벽을 정의하는 금속 산화막을 포함하는 표시장치. - 제10항에 있어서,
상기 금속 산화막은 티타늄 산화물 및 구리 산화물을 포함하는 표시장치. - 제10항에 있어서,
상기 금속층은 제1 금속을 포함하는 제1 금속층, 및 상기 제1 금속과 상이한 제2 금속을 포함하는 제2 금속층이 순차적으로 적층되고,
상기 금속 산화막은 상기 제1 금속의 산화물을 포함하고, 상기 제1 금속층의 측면에 배치되는 제1 금속 산화막, 및 상기 제2 금속의 산화물을 포함하고, 상기 제2 금속층의 측면에 배치되는 제2 금속 산화막을 포함하는 표시장치. - 제1항에 있어서,
상기 캡핑층은 상기 금속층에 접촉하는 표시장치. - 제1항에 있어서,
상기 복수의 신호라인들은 제1 신호라인 및, 상기 제1 신호 라인과 상이한 층 상에 배치된 제2 신호라인을 포함하고,
상기 제1 신호라인 및 상기 제2 신호라인은 절연층을 사이에 두고 서로 이격되고,
상기 박막 트랜지스터는 상기 제1 신호 라인과 동일 층 상에 배치된 제어 전극, 상기 제2 신호 라인과 동일 층 상에 배치되고 서로 이격된 입력 전극 및 출력 전극을 포함하고,
상기 표시 소자는 상기 출력 전극에 연결되고,
상기 제어 전극, 상기 입력 전극, 및 상기 출력 전극 중 적어도 어느 하나는 상기 금속층 및 상기 캡핑층을 포함하는 표시장치. - 제1항에 있어서,
상기 금속층의 상기 측벽은 상기 팁과 평면상에서 전면적으로 중첩하는 표시장치. - 베이스층;
상기 베이스층 상에 배치되고 박막 트랜지스터 및 상기 박막 트랜지스터에 연결된 표시 소자를 포함하는 화소;
상기 화소에 연결된 제1 신호 라인; 및
상기 화소에 연결되고 상기 제1 신호 라인과 상이한 층 상에 배치된 제2 신호 라인을 포함하고,
상기 제1 신호 라인 및 상기 제2 신호 라인 중 적어도 어느 하나는,
금속층; 및
상기 금속층 상에 배치되고, 몰리브덴 및 탄탈럼을 포함하고, 상기 금속층의 광 반사율보다 낮은 광 반사율을 가지는 캡핑층을 포함하고,
상기 캡핑층은 상기 금속층의 측벽보다 돌출된 팁을 포함하고,
상기 팁이 상기 금속층의 상기 측벽보다 돌출된 길이는 4000 Å 이상 6000 Å 이하이고,
상기 캡핑층에서, 상기 몰리브덴과 상기 탄탈럼의 함량비는 80:20 내지 97:3이고,
상기 팁은 평면상에서, 상기 금속층의 상기 측벽이 상기 베이스층과 접하는 대면 지점 이상으로 돌출되는 표시장치. - 베이스층 상에 복수의 신호라인들을 포함하는 회로층을 형성하는 단계; 및
상기 회로층 상에 발광 소자층을 형성하는 단계를 포함하고,
상기 회로층을 형성하는 단계는
도전층을 제공하는 단계;
상기 도전층 상에 몰리브덴 및 탄탈럼을 포함하는 산화물층을 제공하는 단계;
상기 산화물층 상에 감광막 패턴을 형성하는 단계; 및
상기 도전층 및 상기 산화물층을 일괄 식각하여 금속층 및 캡핑층을 포함하는 상기 복수의 신호라인들을 형성하는 단계를 포함하고,
상기 도전층 및 상기 산화물층을 일괄 식각하는 단계에서 상기 캡핑층이 상기 금속층의 측벽보다 돌출된 팁을 포함하도록 형성되고,
상기 팁은 평면상에서, 상기 금속층의 상기 측벽이 상기 베이스층과 접하는 대면 지점 이상으로 돌출되도록 형성되는 표시장치 제조방법. - 제17항에 있어서,
상기 도전층 및 상기 산화물층을 일괄 식각하는 단계에서, 상기 팁이 상기 금속층의 상기 측벽보다 돌출된 길이를 d로 정의할 때, 상기 d는 하기 식 1을 만족하도록 상기 팁이 형성되는 표시장치 제조방법:
[식 1]
d ≥ h/(tan(90˚-θα)) + h/(tan(θβ))
상기 식 1에서, h는 상기 금속층의 두께이고, θα는 상기 표시장치의 최외곽부 시야각이고, θβ는 상기 금속층의 테이퍼각(Taper angle)이다. - 제17항에 있어서,
상기 회로층을 형성하는 단계는
상기 복수의 신호라인들을 산소 조건 하에서 열처리하여 금속 산화막을 형성하는 단계를 더 포함하는 표시장치 제조방법. - 제17항에 있어서,
상기 산화물층에서 상기 몰리브덴과 상기 탄탈럼의 함량비는 80:20 내지 97:3인 표시장치 제조방법.
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