KR100763913B1 - 박막 트랜지스터의 제조방법 - Google Patents
박막 트랜지스터의 제조방법 Download PDFInfo
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- KR100763913B1 KR100763913B1 KR1020060038334A KR20060038334A KR100763913B1 KR 100763913 B1 KR100763913 B1 KR 100763913B1 KR 1020060038334 A KR1020060038334 A KR 1020060038334A KR 20060038334 A KR20060038334 A KR 20060038334A KR 100763913 B1 KR100763913 B1 KR 100763913B1
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- 239000010409 thin film Substances 0.000 title claims description 21
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 23
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- 239000010408 film Substances 0.000 claims description 10
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- 229910052814 silicon oxide Inorganic materials 0.000 description 6
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- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
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- 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
- 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body
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- 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
- 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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
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- 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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
- H01L27/1248—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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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 with a particular composition or shape of the interlayer dielectric specially adapted to the circuit arrangement
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- 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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
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- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/43—Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/45—Ohmic electrodes
- H01L29/456—Ohmic electrodes on silicon
- H01L29/458—Ohmic electrodes on silicon for thin film silicon, e.g. source or drain electrode
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- 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
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- 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
Abstract
Description
Claims (14)
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- 기판에 실리콘 채널 물질층과 실리콘 오믹 물질층을 순차적으로 형성하는 단계;상기 채널 물질층과 오믹 물질층을 패터닝하여 실리콘 채널과 실리콘 채널의 양측단에 접촉되는 소스 오믹층과 드레인 오믹층을 형성하는 단계;상기 소스 오믹층과 드레인 오믹층을 덮는 게이트 절연층을 형성하는 단계;상기 게이트 절연층 위에 채널에 대응하는 게이트를 형성하는 단계;상기 게이트를 덮는 ILD 층을 상기 게이트 절연층 위에 형성하는 단계;상기 ILD층과 게이트 전열층를 관통하는 콘택홀을 상기 소스 오믹층과 드레인 오믹층 위에 각각 형성하는 단계;상기 콘택홀을 통해 상기 소스 오믹층과 드레인 오믹층에 접촉하는 소스 전극 및 드레인 전극을 상기 ILD 층 위에 형성하는 단계; 그리고상기 소스 전극과 드레인 전극을 덮는 페시베이션층을 상기 ILD 층 위에 형성하는 단계;를 포함하는 것을 특징으로 하는 박막 트랜지스터의 제조방법.
- 제 5 항에 있어서,상기 채널 물질층과 오믹 물질층을 패터닝하는 단계는:상기 소스 오믹층과 드레인 오믹층에 대응하는 제1부분과 소스 오믹층과 드레인 오믹층 사이의 제2부분을 가지며, 상기 제2부분은 제1부분에 비해 얇은 두께를 가지는 포토레지스트 마스크를 상기 실리콘 오믹 물질층 위에 형성하는 단계;상기 포토레지스트 마스크에 덮이지 않은 영역의 오믹 물질층과 그 하부의 채널 물질층을 제거하는 단계;적어도 상기 포토레지스터 마스크의 제2부분 두께만큼 상기 포토레지스트 마스크 표면 전체를 애슁하여 상기 포토레지스트 마스크의 제2부분을 제거하는 단계;상기 포토레지스트 마스크의 제1부분에 덮이지 않은 오믹 물질층을 제거하는 단계; 그리고상기 포토레지스트 마스크를 제거하는 단계;를 더 포함하는 것을 특징으로 하는 박막 트랜지스터의 제조방법.
- 제 6 항에 있어서,상기 제1부분과 제2부분을 가지는 상기 포토레지스트 마스크를 슬릿 마스크 또는 하프톤 마스크를 이용한 포토리소그래피법에 의해 형성하는 것을 특징으로 하는 박막 트랜지스터의 제조방법.
- 제 7 항에 있어서,상기 채널 및 그 상부 양측의 소스 오믹층 및 드레인 오믹층을 형성하기 전 에 상기 실리콘 채널 물질층을 SPC(Solid Phase Crystallization) 법에 의해 다결정화하는 단계를 더 포함하는 것을 특징으로 하는 박막 트랜지스터의 제조방법.
- 제 8항에 있어서,상기 SPC는 RTA(Rapid Thermal Annealling)에 의해 수행하는 것을 특징으로 하는 박막 트랜지스터의 제조방법.
- 제 5 항 또는 제 6 항에 있어서,상기 채널 및 그 상부 양측의 소스 오믹층 및 드레인 오믹층을 형성하기 전에 상기 실리콘 채널 물질층을 SPC(Solid Phase Crystallization) 법에 의해 다결정화하는 단계를 더 포함하는 것을 특징으로 하는 박막 트랜지스터의 제조방법.
- 제 10항에 있어서,상기 SPC는 RTA(Rapid Thermal Annealling)에 의해 수행하는 것을 특징으로 하는 박막 트랜지스터의 제조방법.
- 제 11 항에 있어서,상기 소스 오믹층 및 드레인 오믹층을 형성 한 후 열적 산화에 의해 상기 채널의 표면에 산화막을 형성하는 단계를 더 포함하는 것을 특징으로 하는 박막 트랜지스터의 제조방법.
- 제 10 항에 있어서,상기 소스 오믹층 및 드레인 오믹층을 형성 한 후 열적 산화에 의해 상기 채널의 표면에 산화막을 형성하는 단계를 더 포함하는 것을 특징으로 하는 박막 트랜지스터의 제조방법.
- 제 5 항 내지 제 9 항 중의 어느 한 항에 있어서,상기 소스 오믹층 및 드레인 오믹층을 형성 한 후 열적 산화에 의해 상기 채널의 표면에 산화막을 형성하는 단계를 더 포함하는 것을 특징으로 하는 박막 트랜지스터의 제조방법.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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KR1020060038334A KR100763913B1 (ko) | 2006-04-27 | 2006-04-27 | 박막 트랜지스터의 제조방법 |
CN2006101494339A CN101064345B (zh) | 2006-04-27 | 2006-11-20 | 薄膜晶体管及其制造方法 |
US11/706,316 US20070252207A1 (en) | 2006-04-27 | 2007-02-15 | Thin film transistor and method of fabricating the same |
JP2007096523A JP2007300080A (ja) | 2006-04-27 | 2007-04-02 | 薄膜トランジスタ及びその製造方法 |
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Cited By (4)
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KR101073786B1 (ko) | 2010-04-16 | 2011-10-13 | 선문대학교 산학협력단 | 박막트랜지스터의 제조방법 |
US20140284558A1 (en) * | 2013-03-20 | 2014-09-25 | Samsung Display Co., Ltd. | Thin film transistor and organic light emitting diode display including the same |
KR101501920B1 (ko) * | 2008-09-11 | 2015-03-12 | 엘지디스플레이 주식회사 | 박막트랜지스터의 제조방법 |
US10147352B2 (en) | 2015-06-25 | 2018-12-04 | Samsung Display Co., Ltd. | Thin film transistor substrate and organic light-emitting diode display apparatus |
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GB2448174B (en) * | 2007-04-04 | 2009-12-09 | Cambridge Display Tech Ltd | Organic thin film transistors |
GB0814534D0 (en) * | 2008-08-08 | 2008-09-17 | Cambridge Display Tech Ltd | Transistors |
KR101065407B1 (ko) * | 2009-08-25 | 2011-09-16 | 삼성모바일디스플레이주식회사 | 유기 발광 표시 장치 및 그 제조 방법 |
KR101700154B1 (ko) | 2009-11-20 | 2017-01-26 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 래치 회로와 회로 |
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CN105428243B (zh) * | 2016-01-11 | 2017-10-24 | 京东方科技集团股份有限公司 | 一种薄膜晶体管及制作方法、阵列基板和显示装置 |
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Also Published As
Publication number | Publication date |
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JP2007300080A (ja) | 2007-11-15 |
CN101064345B (zh) | 2010-12-01 |
US20070252207A1 (en) | 2007-11-01 |
CN101064345A (zh) | 2007-10-31 |
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