KR100648214B1 - 박막 트랜지스터 액정표시장치의 제조방법 - Google Patents
박막 트랜지스터 액정표시장치의 제조방법 Download PDFInfo
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- KR100648214B1 KR100648214B1 KR1020000036488A KR20000036488A KR100648214B1 KR 100648214 B1 KR100648214 B1 KR 100648214B1 KR 1020000036488 A KR1020000036488 A KR 1020000036488A KR 20000036488 A KR20000036488 A KR 20000036488A KR 100648214 B1 KR100648214 B1 KR 100648214B1
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- film
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- amorphous silicon
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 239000010408 film Substances 0.000 claims abstract description 123
- 239000010409 thin film Substances 0.000 claims abstract description 40
- 229910021417 amorphous silicon Inorganic materials 0.000 claims abstract description 32
- 239000002184 metal Substances 0.000 claims abstract description 31
- 230000000903 blocking effect Effects 0.000 claims abstract description 26
- 229920002120 photoresistant polymer Polymers 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 23
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 19
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 8
- 239000000758 substrate Substances 0.000 claims abstract description 8
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 4
- 238000005530 etching Methods 0.000 claims description 22
- 238000001312 dry etching Methods 0.000 claims description 12
- 238000001039 wet etching Methods 0.000 claims description 10
- 230000001681 protective effect Effects 0.000 claims description 7
- 238000000151 deposition Methods 0.000 claims description 4
- 238000002161 passivation Methods 0.000 claims description 4
- 238000004380 ashing Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 239000011521 glass Substances 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 17
- 239000000463 material Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000002356 single layer Substances 0.000 description 2
- 238000009125 cardiac resynchronization therapy Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 239000004065 semiconductor Substances 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
- G02F1/136—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
- G02F1/136231—Active matrix addressed cells for reducing the number of lithographic steps
-
- 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
- G02F1/136231—Active matrix addressed cells for reducing the number of lithographic steps
- G02F1/136236—Active matrix addressed cells for reducing the number of lithographic steps using a grey or half tone lithographic process
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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)
Abstract
Description
Claims (5)
- 투명성 절연기판 상에 광 차단 패턴용 금속막, 실리콘질화막, 소오스/드레인용 금속막 및 도핑된 비정질실리콘막을 차례로 증착하는 단계;상기 도핑된 비정질실리콘막 상에 감광막을 도포하는 단계;상기 감광막을 할프 톤 마스크(Half Tone mask)를 이용하여 노광한 후 현상해서 소오스/드레인 형성 영역을 블로킹하면서 중심부가 가장자리 보다 얇은 두께를 갖는 감광막 패턴을 형성하는 단계;상기 감광막 패턴을 이용하여 도핑된 비정질실리콘막, 소오스/드레인용 금속막, 실리콘질화막 및 광 차단 패턴용 금속막을 식각해서 박막 트랜지스터의 채널부 및 광 차단 패턴을 형성하는 단계;상기 박막 트랜지스터의 채널부 중심의 도핑된 비정질실리콘막 부분이 노출되도록 상기 감광막 패턴의 일부 두께를 에싱하는 단계;상기 노출된 도핑된 비정질실리콘막 부분 및 그 하부의 소오스/드레인용 금속막 부분을 식각해서 오믹 콘택층 및 소오스/드레인을 형성하는 단계;상기 잔류된 감광막 패턴을 제거하는 단계;상기 감광막 패턴이 제거된 결과물 상에 비도핑된 비정질실리콘막, 실리콘질화막 및 게이트용 금속막을 차례로 증착하는 단계;상기 게이트용 금속막과 실리콘질화막 및 비도핑된 비정질실리콘막을 식각하여 각각 게이트, 게이트 절연막 및 채널층을 형성해서 스태거형 박막 트랜지스터를 형성하는 단계;상기 스태거형 박막 트랜지스터가 형성된 결과물 상에 보호막을 형성하는 단계;상기 보호막을 식각해서 박막 트랜지스터의 소오스/드레인의 일부분을 노출시키는 홀을 형성하는 단계; 및상기 보호막 상에 상기 홀을 통하여 박막 트랜지스터의 소오스/드레인과 콘택되는 화소전극을 형성하는 단계;를 포함하는 것을 특징으로 하는 박막 트랜지스터 액정표시장치의 제조방법.
- 제 1 항에 있어서, 상기 광 차단 패턴용 금속막은 Mo막, MoW막, Ti막 및 Cr막으로 구성된 그룹으로부터 선택되는 어느 하나인 것을 특징으로 하는 박막 트랜지스터 액정표시장치의 제조방법.
- 제 1 항에 있어서, 상기 박막 트랜지스터의 채널부 및 광 차단 패턴을 형성하기 위한 식각은,습식 식각, 혹은, 건식 식각 중에서 어느 하나로 행하는 1단계 공정, 또는, 습식 식각 후, 건식 식각을 행하거나, 또는, 건식 식각 후, 습식 식각을 행하는 2단계 공정으로 행해지는 것을 특징으로 하는 박막 트랜지스터 액정표시장치의 제조방법.
- 제 1 항에 있어서, 상기 오믹 콘택층 및 소오스/드레인을 형성하기 위한 식각은, 건식 식각 공정으로 행하며, 식각 가스로서 SF6 가스와 HCl 가스의 혼합 가스 를 사용하는 것을 특징으로 하는 박막 트랜지스터 액정표시장치의 제조방법.
- 제 1 항에 있어서, 상기 게이트 및 채널층을 형성하기 위한 식각은, 습식 식각, 혹은, 건식 식각 중에서 어느 하나로 행하는 1단계 공정, 또는, 습식 식각 후, 건식 식각을 행하거나, 또는, 건식 식각 후, 습식 식각을 행하는 2단계 공정으로 행해지는 것을 특징으로 하는 박막 트랜지스터 액정표시장치의 제조방법.
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KR1020000036488A KR100648214B1 (ko) | 2000-06-29 | 2000-06-29 | 박막 트랜지스터 액정표시장치의 제조방법 |
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Cited By (1)
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WO2023184613A1 (zh) * | 2022-04-01 | 2023-10-05 | 惠州华星光电显示有限公司 | 阵列基板及其制作方法 |
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KR100852831B1 (ko) * | 2002-08-01 | 2008-08-18 | 비오이 하이디스 테크놀로지 주식회사 | 액정표시장치의 어레이 기판 제조방법 |
KR100867470B1 (ko) * | 2002-08-07 | 2008-11-10 | 하이디스 테크놀로지 주식회사 | 액정표시장치의 어레이 기판 제조방법 |
KR100865258B1 (ko) * | 2002-09-19 | 2008-10-24 | 엘지디스플레이 주식회사 | 액정표시장치용 어레이 기판 제조방법 |
KR101451574B1 (ko) * | 2007-10-18 | 2014-10-17 | 엘지디스플레이 주식회사 | 박막트랜지스터 기판 및 그의 제조방법 |
CN104155855B (zh) * | 2014-08-22 | 2017-12-15 | 深圳市华星光电技术有限公司 | 蚀刻速率测试控片的制作方法与重复利用方法 |
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WO2023184613A1 (zh) * | 2022-04-01 | 2023-10-05 | 惠州华星光电显示有限公司 | 阵列基板及其制作方法 |
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