KR100663289B1 - 액정표시장치의 박막트랜지스터 제조방법 - Google Patents
액정표시장치의 박막트랜지스터 제조방법 Download PDFInfo
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- KR100663289B1 KR100663289B1 KR1020000069289A KR20000069289A KR100663289B1 KR 100663289 B1 KR100663289 B1 KR 100663289B1 KR 1020000069289 A KR1020000069289 A KR 1020000069289A KR 20000069289 A KR20000069289 A KR 20000069289A KR 100663289 B1 KR100663289 B1 KR 100663289B1
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- 238000000034 method Methods 0.000 title claims abstract description 72
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 239000010409 thin film Substances 0.000 title claims abstract description 19
- 239000010410 layer Substances 0.000 claims abstract description 92
- 229910021417 amorphous silicon Inorganic materials 0.000 claims abstract description 34
- 229910052751 metal Inorganic materials 0.000 claims abstract description 31
- 239000002184 metal Substances 0.000 claims abstract description 31
- 239000010408 film Substances 0.000 claims abstract description 17
- 239000011241 protective layer Substances 0.000 claims abstract description 13
- 239000000758 substrate Substances 0.000 claims abstract description 12
- 239000011521 glass Substances 0.000 claims abstract description 7
- 238000003860 storage Methods 0.000 claims abstract description 5
- 238000000151 deposition Methods 0.000 claims abstract description 4
- 238000005530 etching Methods 0.000 claims description 16
- 238000001312 dry etching Methods 0.000 claims description 15
- 238000001039 wet etching Methods 0.000 claims description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 3
- 229910017604 nitric acid Inorganic materials 0.000 claims description 3
- 235000011007 phosphoric acid Nutrition 0.000 claims description 3
- 230000002411 adverse Effects 0.000 description 3
- 239000007772 electrode material Substances 0.000 description 3
- 238000000059 patterning Methods 0.000 description 3
- 238000000206 photolithography Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002161 passivation 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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/786—Thin film transistors, i.e. transistors with a channel being at least partly a thin film
-
- 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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134318—Electrodes characterised by their geometrical arrangement having a patterned common electrode
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- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Engineering & Computer Science (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Computer Hardware Design (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Ceramic Engineering (AREA)
- Optics & Photonics (AREA)
- Thin Film Transistor (AREA)
- Drying Of Semiconductors (AREA)
Abstract
Description
이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 상세하게 설명하도록 한다.
Claims (9)
- 글래스기판 상에 화소ITO막, 소오스/드레인금속층 및 n+ a-Si층을 순서대로 증착하고, 상기 n+ a-Si층과 소오스/드레인금속층 및 화소ITO막을 식각하여 화소전극, 소오스/드레인을 정의하는 제 1마스크공정;상기 제 1마스크 공정의 결과로 얻어진 구조 상에 a-Si층과 게이트절연층 및 게이트금속층을 순서대로 증착하고, 상기 게이트금속층과 게이트절연층 및 a-Si층을 식각하여 게이트전극 및 액티브 a-Si층을 정의하는 제 2마스크공정; 및상기 제 2마스크공정의 결과로 얻어진 구조 상에 보호층을 증착하고 스토리지 및 공통전극을 형성하는 제 3마스크공정;을 포함하는 것을 특징으로 하는 액정표시장치의 박막트랜지스터 제조방법.
- 제 1 항에 있어서, 상기 제 1마스크공정에서 상기 소오스/드레인은 MoW로 형성되고, 상기 n+ a-Si층 및 소오스/드레인은 1-스텝 건식에칭에 의해 정의되며, 그 건식에칭에는 SF6계 개스가 사용되는 것을 특징으로 하는 액정표시장치의 박막트랜지스터 제조방법.
- 제 1 항에 있어서, 상기 화소전극은 상기 소오스/드레인의 하부에 용장성을 갖도록 형성되는 것을 특징으로 하는 액정표시장치의 박막트랜지스터 제조방법.
- 제 1 항에 있어서, 상기 제 2마스크공정에서 상기 액티브 a-Si층과 게이트전극은 동시에 정의되는 것을 특징으로 하는 액정표시장치의 박막트랜지스터 제조방법.
- 제 4 항에 있어서, 상기 게이트전극은 MoW로 형성되고, 상기 액티브 a-Si층과 상기 게이트전극은 SF6소오스 개스로 건식에칭에 의해 동시에 정의되는 것을 특징으로 하는 액정표시장치의 박막트랜지스터 제조방법.
- 제 4 항에 있어서, 상기 게이트전극은 MoW로 형성되고, 상기 소오스/드레인은 AlNd로 형성되며, 상기 게이트금속층과 상기 게이트절연층, a-Si층 및 n+ a-Si층이 동시에 SF6계 개스로 건식에칭되는 것을 특징으로 하는 액정표시장치의 박막트랜지스터 제조방법.
- 제 6 항에 있어서, 상기 게이트전극은 AlNd로 형성되고, 상기 소오스/드레인은 MoW로 형성되며, 상기 게이트금속층과 게이트절연층, a-Si층 및 n+ a-Si층은 H3PO4/CH3COOH/HNO3, BOE계 에칭제에 의해 2-스텝 습식에칭되는 것을 특징으로 하는 액정표시장치의 박막트랜지스터 제조방법.
- 제 1 항에 있어서, 상기 제 3마스크공정에서 상기 소오스/드레인이 MoW로 형성되고, SF6개스를 소오스개스로 하여 건식에칭으로 패드부의 보호층과 화소부의 보호층 및 소오스/드레인을 동시에 1-스텝 에칭하는 것을 특징으로 하는 액정표시장치의 박막트랜지스터 제조방법.
- 제 1항에 있어서, 차광막을 형성하기 위한 마스크공정이 추가로 포함되는 것을 특징으로 하는 액정표시장치의 박막트랜지스터 제조방법.
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KR1020000069289A KR100663289B1 (ko) | 2000-11-21 | 2000-11-21 | 액정표시장치의 박막트랜지스터 제조방법 |
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KR100663289B1 true KR100663289B1 (ko) | 2007-01-02 |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09153618A (ja) * | 1995-11-30 | 1997-06-10 | Sanyo Electric Co Ltd | 液晶表示装置の製造方法 |
JPH09283763A (ja) * | 1996-04-16 | 1997-10-31 | Advanced Display:Kk | アクティブマトリクス基板の製法 |
KR20000020846A (ko) * | 1998-09-24 | 2000-04-15 | 윤종용 | 박막 트랜지스터 및 이를 포함하는 액정 표시 장치용 기판의 제조 방법 |
KR20000027776A (ko) * | 1998-10-29 | 2000-05-15 | 김영환 | 액정 표시 장치의 제조방법 |
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- 2000-11-21 KR KR1020000069289A patent/KR100663289B1/ko active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09153618A (ja) * | 1995-11-30 | 1997-06-10 | Sanyo Electric Co Ltd | 液晶表示装置の製造方法 |
JPH09283763A (ja) * | 1996-04-16 | 1997-10-31 | Advanced Display:Kk | アクティブマトリクス基板の製法 |
KR20000020846A (ko) * | 1998-09-24 | 2000-04-15 | 윤종용 | 박막 트랜지스터 및 이를 포함하는 액정 표시 장치용 기판의 제조 방법 |
KR20000027776A (ko) * | 1998-10-29 | 2000-05-15 | 김영환 | 액정 표시 장치의 제조방법 |
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