KR100317641B1 - 박막 트랜지스터 및 그 제조방법 - Google Patents
박막 트랜지스터 및 그 제조방법 Download PDFInfo
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- KR100317641B1 KR100317641B1 KR1019990018387A KR19990018387A KR100317641B1 KR 100317641 B1 KR100317641 B1 KR 100317641B1 KR 1019990018387 A KR1019990018387 A KR 1019990018387A KR 19990018387 A KR19990018387 A KR 19990018387A KR 100317641 B1 KR100317641 B1 KR 100317641B1
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- Prior art keywords
- source
- drain regions
- amorphous silicon
- silicon
- polycrystalline
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- 239000010409 thin film Substances 0.000 title claims abstract description 39
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 229910021417 amorphous silicon Inorganic materials 0.000 claims abstract description 63
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract description 43
- 238000002425 crystallisation Methods 0.000 claims abstract description 42
- 239000012535 impurity Substances 0.000 claims abstract description 39
- 239000002184 metal Substances 0.000 claims abstract description 36
- 229910052751 metal Inorganic materials 0.000 claims abstract description 36
- 230000008025 crystallization Effects 0.000 claims abstract description 34
- 238000000151 deposition Methods 0.000 claims abstract description 31
- 239000000758 substrate Substances 0.000 claims abstract description 29
- 239000010408 film Substances 0.000 claims abstract description 28
- 239000011248 coating agent Substances 0.000 claims abstract description 6
- 238000000576 coating method Methods 0.000 claims abstract description 6
- 238000000059 patterning Methods 0.000 claims abstract description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000003054 catalyst Substances 0.000 claims abstract description 4
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 4
- 239000010703 silicon Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 70
- 238000002161 passivation Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 230000008021 deposition Effects 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 230000003197 catalytic effect Effects 0.000 claims description 5
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims description 3
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 3
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 2
- 229910017052 cobalt Inorganic materials 0.000 claims description 2
- 239000010941 cobalt Substances 0.000 claims description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 230000001681 protective effect Effects 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
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000010410 layer Substances 0.000 description 48
- 230000008569 process Effects 0.000 description 26
- 238000005499 laser crystallization Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000006356 dehydrogenation reaction Methods 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 229910021332 silicide Inorganic materials 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 238000001994 activation Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000005224 laser annealing Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 230000005676 thermoelectric effect Effects 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
- H01L29/66757—Lateral single gate single channel transistors with non-inverted structure, i.e. the channel layer is formed before the gate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
- H01L29/78603—Thin film transistors, i.e. transistors with a channel being at least partly a thin film characterised by the insulating substrate or support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
- H01L29/78606—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with supplementary region or layer in the thin film or in the insulated bulk substrate supporting it for controlling or increasing the safety of the device
- H01L29/78618—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with supplementary region or layer in the thin film or in the insulated bulk substrate supporting it for controlling or increasing the safety of the device characterised by the drain or the source properties, e.g. the doping structure, the composition, the sectional shape or the contact structure
- H01L29/78621—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with supplementary region or layer in the thin film or in the insulated bulk substrate supporting it for controlling or increasing the safety of the device characterised by the drain or the source properties, e.g. the doping structure, the composition, the sectional shape or the contact structure with LDD structure or an extension or an offset region or characterised by the doping profile
Abstract
Description
Claims (14)
- 완충층이 증착된 기판 상에 불순물 비정질 실리콘을 증착하는 단계와;상기 불순물 실리콘을 비정질 소스 영역과 상기 비정질 소스 영역과 소정 간격 이격되게 비정질 드레인 영역을 형성하는 단계와;상기 비정질 소스 및 드레인 영역과 노출된 기판 전면에 순수 비정질 실리콘을 증착하는 단계와;상기 순수 비정질 실리콘이 증착된 기판 상의 양 가장자리에 직류 전압을 인가하여 상기 순수 비정질 실리콘과 상기 비정질 소스 및 드레인 영역을 동시에 다결정 실리콘과 다결정 소스 및 드레인 영역으로 결정화하는 단계와;상기 결정화된 다결정 실리콘을 상기 다결정 소스 및 드레인 영역과 일부분이 겹치도록 액티브층으로 패터닝하는 단계와;상기 액티브층 상에 게이트 절연막과 상기 게이트 절연막 상에 게이트 전극을 형성하는 단계와;상기 다결정 소스 및 드레인 영역과 각각 접촉하는 소스 및 드레인 전극을 형성하는 단계와;상기 불순물 비정질 실리콘을 증착하는 전 단계와 상기 결정화 단계 사이에 촉매 금속을 입히는 단계를 더욱 포함하는 것을 특징으로 하는 박막 트랜지스터 제조방법.
- 청구항 1에 있어서,상기 완충층과 상기 보호막 및 상기 게이트 절연막은 실리콘 질화막(SiNx), 실리콘 산화막(SiO2), TEOS(Tetra Ethoxy Silane)로 구성된 집단에서 선택된 물질인 것을 특징으로 하는 박막 트랜지스터 제조방법.
- 청구항 1에 있어서,상기 불순물 비정질 실리콘은 상기 순수 비정질 실리콘 증착시 PH3가스를 첨가하여 형성하고, N-형 반도체인 것을 특징으로 하는 박막 트랜지스터 제조방법.
- 청구항 1에 있어서,상기 불순물 비정질 실리콘은 상기 순수 비정질 실리콘 증착시 B2H6가스를 첨가하여 형성하고, P-형 반도체인 것을 특징으로 하는 박막 트랜지스터 제조방법.
- 청구항 1에 있어서,상기 완충층과 상기 불순물 비정질 실리콘은 연속으로 증착되는 것을 특징으로 하는 박막 트랜지스터 제조방법.
- 청구항 1에 있어서,상기 촉매 금속을 입히는 단계는 상기 완충층 형성후인 것을 특징으로 하는 박막 트랜지스터 제조방법.
- 청구항 1에 있어서,상기 촉매 금속을 입히는 단계는 비정질 소스 및 드레인 영역 형성후인 것을 특징으로 하는 박막 트랜지스터 제조방법.
- 청구항 1에 있어서,상기 촉매 금속을 입히는 단계는 상기 순수 비정질 실리콘 증착후인 것을 특징으로 하는 박막 트랜지스터 제조방법.
- 청구항 1에 있어서,상기 촉매 금속은 니켈(Ni), 납(Pb), 코발트(Co)로 구성된 집단에서 선택된물질인 것을 특징으로 하는 박막 트랜지스터 제조방법.
- 청구항 1에 있어서,상기 게이트 전극은 상기 다결정 소스 및 드레인 영역과 상기 액티브층이 겹치는 부분을 제외한 부분의 상기 액티브층 상부 게이트 절연막 상에 형성하는 것을 특징으로 하는 박막 트랜지스터 제조방법.
- 청구항 1에 있어서,상기 게이트 절연막 및 상기 게이트 전극은 상기 액티브층 상부 상기 다결정 소스 및 드레인 영역이 마주보는 쪽으로 각각 △L만큼 이격된 위치에 형성되는 것을 특징으로 하는 박막 트랜지스터 제조방법.
- 청구항 1에 있어서,상기 게이트 전극을 형성하는 단계 후에 상기 게이트 전극과 노출된 액티브층 및 기판 상부 전면에 걸쳐 보호막을 증착하고, 상기 다결정 소스 및 드레인 영역의 일부분이 노출되도록 콘택홀을 형성하는 단계를 더욱 포함하는 것을 특징으로 하는 박막 트랜지스터 제조방법.
- 청구항 1과 청구항 12 중의 어느 한 항에 있어서,상기 소스 및 드레인 전극은 상기 보호막에 형성된 콘택홀을 통해 상기 다결정 소스 및 드레인 영역과 접촉하는 것을 특징으로 하는 박막 트랜지스터 제조방법.
- 청구항 1 내지 청구항 13 중의 어느 한 항에 있어서,상기 박막 트랜지스터 제조방법에 의해 제조된 박막 트랜지스터.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019990018387A KR100317641B1 (ko) | 1999-05-21 | 1999-05-21 | 박막 트랜지스터 및 그 제조방법 |
US09/576,431 US6342409B1 (en) | 1999-05-21 | 2000-05-22 | Polysilicon thin film transistor and method of manufacturing the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR1019990018387A KR100317641B1 (ko) | 1999-05-21 | 1999-05-21 | 박막 트랜지스터 및 그 제조방법 |
Publications (2)
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KR20000074450A KR20000074450A (ko) | 2000-12-15 |
KR100317641B1 true KR100317641B1 (ko) | 2001-12-22 |
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KR1019990018387A KR100317641B1 (ko) | 1999-05-21 | 1999-05-21 | 박막 트랜지스터 및 그 제조방법 |
Country Status (2)
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US (1) | US6342409B1 (ko) |
KR (1) | KR100317641B1 (ko) |
Cited By (1)
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KR20100054105A (ko) * | 2008-11-13 | 2010-05-24 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 반도체 장치 및 그 제작 방법 |
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TW452892B (en) * | 2000-08-09 | 2001-09-01 | Lin Jing Wei | Re-crystallization method of polysilicon thin film of thin film transistor |
KR100715908B1 (ko) * | 2000-12-29 | 2007-05-08 | 엘지.필립스 엘시디 주식회사 | 박막 트랜지스터 및 그 제조방법 |
KR100653263B1 (ko) * | 2000-12-29 | 2006-12-01 | 엘지.필립스 엘시디 주식회사 | 실리콘막의 결정화 방법 |
US6566687B2 (en) * | 2001-01-18 | 2003-05-20 | International Business Machines Corporation | Metal induced self-aligned crystallization of Si layer for TFT |
KR100662492B1 (ko) * | 2001-07-10 | 2007-01-02 | 엘지.필립스 엘시디 주식회사 | 비정질막 결정화 방법 및 이를 적용한 액정표시소자의제조방법 |
KR100662494B1 (ko) * | 2001-07-10 | 2007-01-02 | 엘지.필립스 엘시디 주식회사 | 비정질막 결정화방법 및 이를 이용한 액정표시소자의제조방법 |
US7238557B2 (en) * | 2001-11-14 | 2007-07-03 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device and method of fabricating the same |
KR100447893B1 (ko) * | 2001-12-26 | 2004-09-08 | 엘지.필립스 엘시디 주식회사 | 박막 트랜지스터 제조방법 |
KR100766318B1 (ko) | 2005-11-29 | 2007-10-11 | 엘지.필립스 엘시디 주식회사 | 유기 반도체 물질을 이용한 박막트랜지스터와 이를 구비한액정표시장치용 어레이 기판 및 그 제조방법 |
KR100788993B1 (ko) * | 2005-12-23 | 2007-12-28 | 전자부품연구원 | 다결정 실리콘 박막 트랜지스터의 제조 방법 |
KR100818287B1 (ko) * | 2007-01-10 | 2008-03-31 | 삼성전자주식회사 | 폴리 실리콘의 형성방법, 이 폴리 실리콘을 구비하는 박막트랜지스터 및 그 제조방법 |
KR101293566B1 (ko) * | 2007-01-11 | 2013-08-06 | 삼성디스플레이 주식회사 | 유기 발광 표시 장치 및 그 제조 방법 |
US8299467B2 (en) * | 2009-12-28 | 2012-10-30 | Semiconductor Energy Laboratory Co., Ltd. | Thin film transistor and fabrication method thereof |
CN104975260B (zh) * | 2015-08-05 | 2018-05-01 | 大连大学 | 一种高晶化率多晶硅薄膜的制备方法 |
US11251268B2 (en) * | 2020-01-28 | 2022-02-15 | Taiwan Semiconductor Manufacturing Co., Ltd. | Semiconductor device with doped structure |
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KR101665954B1 (ko) * | 2008-11-13 | 2016-10-24 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 반도체 장치 및 그 제작 방법 |
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US6342409B1 (en) | 2002-01-29 |
KR20000074450A (ko) | 2000-12-15 |
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