KR20170142899A - 성막 방법 및 tft의 제조 방법 - Google Patents
성막 방법 및 tft의 제조 방법 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 42
- 239000010408 film Substances 0.000 title claims description 160
- 239000010409 thin film Substances 0.000 title claims description 3
- 238000004519 manufacturing process Methods 0.000 title description 8
- 238000012545 processing Methods 0.000 claims abstract description 64
- 230000001681 protective effect Effects 0.000 claims abstract description 47
- 239000000758 substrate Substances 0.000 claims abstract description 34
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 15
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 9
- 239000010703 silicon Substances 0.000 claims abstract description 9
- 125000005843 halogen group Chemical group 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims description 318
- 230000015572 biosynthetic process Effects 0.000 claims description 30
- 239000004065 semiconductor Substances 0.000 claims description 27
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 22
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 15
- ABTOQLMXBSRXSM-UHFFFAOYSA-N silicon tetrafluoride Chemical compound F[Si](F)(F)F ABTOQLMXBSRXSM-UHFFFAOYSA-N 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 5
- FDNAPBUWERUEDA-UHFFFAOYSA-N silicon tetrachloride Chemical compound Cl[Si](Cl)(Cl)Cl FDNAPBUWERUEDA-UHFFFAOYSA-N 0.000 claims description 5
- 239000010949 copper Substances 0.000 description 48
- 238000002161 passivation Methods 0.000 description 33
- 229910003902 SiCl 4 Inorganic materials 0.000 description 18
- 125000001153 fluoro group Chemical group F* 0.000 description 17
- 125000004429 atom Chemical group 0.000 description 12
- 230000006866 deterioration Effects 0.000 description 11
- 150000002500 ions Chemical class 0.000 description 10
- 230000008569 process Effects 0.000 description 10
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- 230000000052 comparative effect Effects 0.000 description 6
- 238000009616 inductively coupled plasma Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000013078 crystal Substances 0.000 description 5
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- 238000005259 measurement Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000005229 chemical vapour deposition Methods 0.000 description 4
- 230000005684 electric field Effects 0.000 description 4
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000002845 discoloration Methods 0.000 description 3
- 238000001678 elastic recoil detection analysis Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 125000004430 oxygen atom Chemical group O* 0.000 description 3
- 229910000077 silane Inorganic materials 0.000 description 3
- 230000008961 swelling Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052733 gallium Inorganic materials 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- -1 respectively Chemical group 0.000 description 2
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 229910003691 SiBr Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007850 degeneration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 1
- 229910052743 krypton Inorganic materials 0.000 description 1
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000005001 rutherford backscattering spectroscopy Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical group [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- AIFMYMZGQVTROK-UHFFFAOYSA-N silicon tetrabromide Chemical compound Br[Si](Br)(Br)Br AIFMYMZGQVTROK-UHFFFAOYSA-N 0.000 description 1
- CFTHARXEQHJSEH-UHFFFAOYSA-N silicon tetraiodide Chemical compound I[Si](I)(I)I CFTHARXEQHJSEH-UHFFFAOYSA-N 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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Abstract
(해결 수단) 보호막의 성막 방법은 반입 스텝과, 공급 스텝과, 성막 스텝을 포함한다. 반입 스텝에서는, 처리 용기 내에, Cu를 포함한 재료에 의해 형성된 구조물인 Cu부가 노출되어 있는 기판이 반입된다. 공급 스텝에서는, 처리 용기 내에 제 1 가스, 제 2 가스, 및 제 3 가스가 공급된다. 성막 스텝에서는, 처리 용기 내에 공급된 제 1 가스, 제 2 가스, 및 제 3 가스를 포함한 혼합 가스의 플라즈마에 의해, Cu부 상에 보호막이 성막된다. 제 1 가스는 할로겐 원자를 포함한 실리콘계 가스이다. 제 2 가스는 O2 가스, N2O 가스, N2 가스, 또는 희가스이다. 제 3 가스는 H2O 가스 또는 SiH4 가스이다.
Description
도 2는 TFT의 구조의 일례를 나타내는 단면도이다.
도 3은 버퍼층 및 패시베이션층의 성막 순서의 일례를 나타내는 흐름도이다.
도 4는 버퍼층 및 패시베이션층의 성막 과정의 일례를 설명하기 위한 단면도이다.
도 5는 보호막의 원자 조성 백분율의 측정 결과를 나타내는 도면이다.
도 6은 사용되는 혼합 가스마다의 보호막의 성막 상태의 일례를 나타내는 도면이다.
도 7은 TFT의 구조의 다른 예를 나타내는 단면도이다.
도 8은 탑 게이트형의 TFT의 구조의 일례를 나타내는 단면도이다.
11 : 처리 용기 12 : 탑재대
13 : 안테나 14 : 창 부재
15 : 가스 도입구 16 : 게이트 밸브
17 : 배기 장치 18 : 배기구
20a~20e : 가스 공급원 21a~21e : 유량 제어기
22a~22e : 밸브 23 : 가스 공급관
25 : 정합기 26 : 고주파 전원
27 : 컨트롤러 30 : TFT
31 : 언더코트층 32 : 게이트 전극
33 : 게이트 절연층 34 : 채널
35 : 소스 전극 36 : 드레인 전극
37 : 버퍼층 38 : 패시베이션층
40 : TFT 41 : 언더코트층
42 : 채널 43 : 소스 전극
44 : 드레인 전극 45 : 버퍼층
46 : 게이트 절연층 47 : 게이트 전극
48 : 패시베이션층 49 : 버퍼층
Claims (8)
- 처리 용기 내에, Cu를 포함한 재료에 의해 형성된 구조물인 Cu부가 노출되어 있는 기판을 반입하는 반입 스텝과,
상기 처리 용기 내에 제 1 가스, 제 2 가스, 및 제 3 가스를 공급하는 제 1 공급 스텝과,
상기 처리 용기 내에 공급된 상기 제 1 가스, 상기 제 2 가스, 및 상기 제 3 가스를 포함한 혼합 가스의 플라즈마에 의해, 상기 Cu부 상에 보호막을 성막하는 제 1 성막 스텝
을 포함하고,
상기 제 1 가스는 할로겐 원자를 포함한 실리콘계 가스이며,
상기 제 2 가스는 O2 가스, N2O 가스, N2 가스, 또는 희가스이며,
상기 제 3 가스는 H2O 가스 또는 SiH4 가스인
것을 특징으로 하는 성막 방법.
- 제 1 항에 있어서,
상기 제 1 가스는 SiF4 가스이며,
상기 제 2 가스는 O2 가스이며,
상기 제 3 가스는 H2O 가스인
것을 특징으로 하는 성막 방법.
- 제 1 항에 있어서,
상기 보호막은 10㎚ 이상 50㎚ 이하의 범위 내의 두께인 것을 특징으로 하는 성막 방법.
- 제 1 항에 있어서,
상기 기판 상에는, 산화물 반도체가 노출되어 있고,
상기 제 1 성막 스텝에서는, 상기 Cu부 및 상기 산화물 반도체 상에 상기 보호막이 성막되는
것을 특징으로 하는 성막 방법.
- 제 4 항에 있어서,
상기 산화물 반도체는 TFT(Thin Film Transistor)의 채널을 구성하는 것을 특징으로 하는 성막 방법. - 제 1 항 내지 제 5 항 중 어느 한 항에 있어서,
상기 기판 상에 노출되어 있는 상기 Cu부는 TFT의 소스 전극, 드레인 전극, 및 게이트 전극 중의 적어도 하나인 것을 특징으로 하는 성막 방법.
- 제 1 항 내지 제 5 항 중 어느 한 항에 있어서,
상기 처리 용기 내에, 염화 규소 가스 또는 불화 규소 가스 혹은 그들의 혼합 가스, 및, 수소 원자를 포함하지 않는 산소 함유 가스 또는 질소 함유 가스를 공급하는 제 2 공급 스텝과,
상기 처리 용기 내에 공급된 상기 염화 규소 가스 또는 상기 불화 규소 가스 혹은 그들의 혼합 가스, 및, 상기 산소 함유 가스 또는 상기 질소 함유 가스를 포함한 혼합 가스의 플라즈마에 의해, 상기 보호막 상에 산화 규소막 또는 질화 규소막을 성막하는 제 2 성막 스텝
을 더 포함하는 것을 특징으로 하는 성막 방법.
- Cu를 포함한 재료에 의해 형성된 소스 전극 및 드레인 전극이 배치되고, 상기 소스 전극과 상기 드레인 전극의 사이에 산화물 반도체가 배치되고, 상기 소스 전극, 상기 드레인 전극, 및 상기 산화물 반도체가 노출되어 있는 기판을 처리 용기 내에 반입하는 반입 스텝과,
상기 처리 용기 내에 제 1 가스, 제 2 가스, 및 제 3 가스를 공급하는 공급 스텝과,
상기 처리 용기 내에 공급된 상기 제 1 가스, 상기 제 2 가스, 및 상기 제 3 가스를 포함한 혼합 가스의 플라즈마에 의해, 상기 소스 전극, 상기 드레인 전극, 및 상기 산화물 반도체 상에 보호막을 성막하는 성막 스텝
을 포함하고,
상기 제 1 가스는 할로겐 원자를 포함한 실리콘계 가스이며,
상기 제 2 가스는 O2 가스, N2O 가스, N2 가스, 또는 희가스이며,
상기 제 3 가스는 H2O 가스 또는 SiH4 가스인
것을 특징으로 하는 TFT의 제조 방법.
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