KR100771730B1 - 박막트랜지스터,박막트랜지스터의제조방법및표시장치 - Google Patents
박막트랜지스터,박막트랜지스터의제조방법및표시장치Info
- Publication number
- KR100771730B1 KR100771730B1 KR1019970075165A KR19970075165A KR100771730B1 KR 100771730 B1 KR100771730 B1 KR 100771730B1 KR 1019970075165 A KR1019970075165 A KR 1019970075165A KR 19970075165 A KR19970075165 A KR 19970075165A KR 100771730 B1 KR100771730 B1 KR 100771730B1
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- Prior art keywords
- grain size
- silicon film
- region
- polycrystalline silicon
- portion corresponding
- Prior art date
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- 238000000034 method Methods 0.000 title claims description 22
- 238000004519 manufacturing process Methods 0.000 title description 12
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract description 45
- 239000011159 matrix material Substances 0.000 claims abstract description 17
- 239000010408 film Substances 0.000 claims description 107
- 239000000758 substrate Substances 0.000 claims description 34
- 229910021417 amorphous silicon Inorganic materials 0.000 claims description 30
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- 238000005224 laser annealing Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims 3
- 238000002360 preparation method Methods 0.000 claims 1
- 230000007423 decrease Effects 0.000 abstract description 11
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- 238000010586 diagram Methods 0.000 description 5
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- 238000000137 annealing Methods 0.000 description 1
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 1
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- 239000001257 hydrogen Substances 0.000 description 1
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- 229910052741 iridium Inorganic materials 0.000 description 1
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- 229910001092 metal group alloy Inorganic materials 0.000 description 1
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- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
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- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 description 1
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- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
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- 238000002834 transmittance Methods 0.000 description 1
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- 239000010937 tungsten Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
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- 238000001039 wet etching Methods 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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Abstract
Description
Claims (5)
- 절연 기판 상에 게이트 전극을 형성하는 제1 공정,절연 기판 및 게이트 전극 상에 게이트 절연막을 형성하는 제2 공정,게이트 절연막 상에 비정질 실리콘막을 형성하는 제3 공정, 및비정질 실리콘막의 표면에 레이저 광을 조사함으로써, 비정질 실리콘막을 가열하여 결정화시킴으로써 능동층이 되는 다결정 실리콘막을 형성하는 제4 공정을 포함하고,상기 제4 공정에서는 다결정 실리콘막에서의 드레인 영역 및 소오스 영역에 대응하는 부분의 그레인 크기가 채널 영역에 대응하는 부분의 그레인 크기에 비해 같거나 또는 크게 되도록 레이저 에너지를 최적화하는 것을 특징으로 하는 박막 트랜지스터의 제조 방법.
- 제1항에 있어서, 상기 레이저 에너지의 상한(上限)은 다결정 실리콘막에서의 드레인 영역 및 소오스 영역에 대응하는 부분의 그레인 크기와 채널 영역의 그레인 크기가 같게 되는 정도의 레벨로 설정하고, 상기 레이저 에너지의 하한(下限)은 필요한 소자 특성을 확보하기 위해 필요한 채널 영역에 대응하는 부분의 그레인 크기에 따라 설정하는 것을 특징으로 하는 박막 트랜지스터의 제조 방법.
- 절연 기판 상의 게이트 전극과 게이트 절연막을 통하여 대향하도록 형성된 비정질 실리콘막에, 드레인 영역 및 소오스 영역에 대응하는 부분의 그레인 크기가 채널 영역에 대응하는 부분의 그레인 크기에 비해 같거나 또는 크게 되도록 레이저 에너지가 최적화된 레이저 광을 조사하고, 능동층이 되는 다결정 실리콘막을 형성한 박막 트랜지스터를 화소 구동 소자로서 이용하는 것을 특징으로 하는 액티브 매트릭스 방식의 표시 장치.
- 절연 기판 상의 게이트 전극과 게이트 절연막을 통하여 대향하도록 형성된 비정질 실리콘막에, 드레인 영역 및 소오스 영역에 대응하는 부분의 그레인 크기가 채널 영역에 대응하는 부분의 그레인 크기에 비해 같거나 또는 크게 되는 정도의 레벨을 상한으로 하고, 채널 영역에 대응하는 부분이, 필요한 소자 특성을 확보하기 위해 필요한 그레인 크기가 되는 레벨을 하한으로 하여 레이저 에너지가 설정된 레이저 광을 조사하고, 능동층이 되는 다결정 실리콘막을 형성한 박막 트랜지스터를 화소 구동 소자로서 이용하는 것을 특징으로 하는 액티브 매트릭스 방식의 표시 장치.
- 복수의 화소와, 상기 화소 각각을 구동하는 복수의 구동 소자에 있어서, 하부 게이트 구조의 박막 트랜지스터를 구비한 복수의 구동 소자를 포함하는 표시 장치에 있어서,상기 박막 트랜지스터는, 절연성 기판과, 상기 절연성 기판상에 배치된 게이트 전극과, 상기 절연성 기판과 상기 게이트 전극 상에 배치된 게이트 절연막과, 상기 게이트 절연막 상에 배치된 다결정 실리콘막을 구비하고,상기 다결정 실리콘막은, 상기 게이트 전극 상방에 채널 영역, 상기 채널 영역의 양측에 소오스 영역 및 드레인 영역을 구비하고 있으며,상기 다결정 실리콘막은, 레이저 어닐에 의해, 상기 드레인 영역 전체의 입경과 상기 소오스 영역 전체의 입경이 채널 영역 전체의 입경과 같거나, 또는 크게 되도록 한 것을 특징으로 하는 표시 장치.
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JP35061996A JP3424891B2 (ja) | 1996-12-27 | 1996-12-27 | 薄膜トランジスタの製造方法および表示装置 |
JP96-350619 | 1996-12-27 |
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US20040241925A1 (en) | 2004-12-02 |
US20010005020A1 (en) | 2001-06-28 |
US7033872B2 (en) | 2006-04-25 |
US6207971B1 (en) | 2001-03-27 |
KR19980064746A (ko) | 1998-10-07 |
JPH10189990A (ja) | 1998-07-21 |
JP3424891B2 (ja) | 2003-07-07 |
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