KR100669734B1 - 박막 트랜지스터의 제조 방법 및 그 방법에 따라 제조된박막 트랜지스터를 구비한 평판 표시 장치 - Google Patents
박막 트랜지스터의 제조 방법 및 그 방법에 따라 제조된박막 트랜지스터를 구비한 평판 표시 장치 Download PDFInfo
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- KR100669734B1 KR100669734B1 KR1020040082571A KR20040082571A KR100669734B1 KR 100669734 B1 KR100669734 B1 KR 100669734B1 KR 1020040082571 A KR1020040082571 A KR 1020040082571A KR 20040082571 A KR20040082571 A KR 20040082571A KR 100669734 B1 KR100669734 B1 KR 100669734B1
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- Prior art keywords
- thin film
- polysilicon
- film transistor
- film
- etching
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- 239000010409 thin film Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 239000010408 film Substances 0.000 claims abstract description 91
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract description 65
- 229920005591 polysilicon Polymers 0.000 claims abstract description 59
- 229910021417 amorphous silicon Inorganic materials 0.000 claims abstract description 23
- 238000005530 etching Methods 0.000 claims abstract description 17
- 239000000758 substrate Substances 0.000 claims abstract description 14
- 230000003746 surface roughness Effects 0.000 claims abstract description 13
- 238000000059 patterning Methods 0.000 claims abstract description 4
- 239000010410 layer Substances 0.000 claims description 51
- 239000000126 substance Substances 0.000 claims description 7
- 238000001312 dry etching Methods 0.000 claims description 6
- 238000005498 polishing Methods 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 3
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 2
- 239000011241 protective layer Substances 0.000 claims 1
- 238000002425 crystallisation Methods 0.000 description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- 238000001020 plasma etching Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000005224 laser annealing Methods 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 239000011229 interlayer Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000002161 passivation Methods 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 229910052814 silicon oxide Inorganic materials 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009616 inductively coupled plasma Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000000992 sputter etching Methods 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000005499 laser crystallization Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
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Classifications
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- 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
- H01L29/78651—Silicon transistors
- H01L29/7866—Non-monocrystalline silicon transistors
- H01L29/78672—Polycrystalline or microcrystalline silicon transistor
-
- 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
- G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/1259—Multistep manufacturing methods
- H01L27/127—Multistep manufacturing methods with a particular formation, treatment or patterning of the active layer specially adapted to the circuit arrangement
-
- 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
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66742—Thin film unipolar transistors
- H01L29/6675—Amorphous silicon or polysilicon transistors
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Optics & Photonics (AREA)
- Thin Film Transistor (AREA)
- Recrystallisation Techniques (AREA)
Abstract
Description
Claims (8)
- 기판 상에 비정질 실리콘막을 1000Å 이상의 두께로 형성하는 단계;상기 비정질 실리콘막을 결정화시켜 폴리실리콘막을 형성하는 단계;상기 폴리실리콘막 표면을 식각하는 단계; 및상기 식각된 폴리실리콘막을 패터닝하는 단계;를 포함하며,상기 폴리실리콘막 표면을 식각하는 단계에서 폴리실리콘막의 식각에 의하여 폴리실리콘막의 두께가 450 내지 550Å으로 조절되는 것을 특징으로 하는 박막 트랜지스터의 제조방법.
- 제1항에 있어서, 상기 폴리실리콘막 표면을 식각하는 단계에서 폴리실리콘막 식각시 화학기계적 폴리싱 또는 건식 에칭을 이용하는 것을 특징으로 하는 박막 트랜지스터의 제조방법.
- 삭제
- 제1항에 있어서, 상기 폴리실리콘막 표면을 식각하는 단계에서 폴리실리콘막 식각후 폴리실리콘막 상부에 보호막이 더 형성된 것을 특징으로 하는 박막 트랜지스터의 제조방법.
- 제1항에 있어서, 상기 보호막이 실리콘 질화막인 것을 특징으로 하는 박막 트랜지스터의 제조방법.
- 제1항, 제2항, 제4항 또는 제5항중 어느 한 항에 띠라 제조된 폴리실리콘막으로 이루어진 활성층;상기 활성층에 절연된 게이트 전극; 및상기 활성층에 전기적으로 연결된 소스 및 드레인 전극을 포함하는 박막트랜지스터.
- 제6항에 있어서, 상기 폴리실리콘막의 표면거칠기가 100 내지 160Å인 박막 트랜지스터.
- 제6항의 박막 트랜지스터를 각 화소에 구비하고, 상기 박막 트랜지스터의 소스 전극 또는 드레인 전극에 화소 전극이 접속된 것을 특징으로 하는 평판 표시 장치.
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KR1020040082571A KR100669734B1 (ko) | 2004-10-15 | 2004-10-15 | 박막 트랜지스터의 제조 방법 및 그 방법에 따라 제조된박막 트랜지스터를 구비한 평판 표시 장치 |
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KR1020040082571A KR100669734B1 (ko) | 2004-10-15 | 2004-10-15 | 박막 트랜지스터의 제조 방법 및 그 방법에 따라 제조된박막 트랜지스터를 구비한 평판 표시 장치 |
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KR20060033449A KR20060033449A (ko) | 2006-04-19 |
KR100669734B1 true KR100669734B1 (ko) | 2007-01-16 |
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Citations (1)
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JP2000323714A (ja) * | 1999-05-10 | 2000-11-24 | Toshiba Corp | 多結晶シリコン素子およびその製造方法 |
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JP2000323714A (ja) * | 1999-05-10 | 2000-11-24 | Toshiba Corp | 多結晶シリコン素子およびその製造方法 |
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