KR20090106051A - 박막 트랜지스터, 그의 제조 방법 및 박막 트랜지스터를구비하는 평판 표시 장치 - Google Patents
박막 트랜지스터, 그의 제조 방법 및 박막 트랜지스터를구비하는 평판 표시 장치 Download PDFInfo
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- KR20090106051A KR20090106051A KR1020080031541A KR20080031541A KR20090106051A KR 20090106051 A KR20090106051 A KR 20090106051A KR 1020080031541 A KR1020080031541 A KR 1020080031541A KR 20080031541 A KR20080031541 A KR 20080031541A KR 20090106051 A KR20090106051 A KR 20090106051A
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- 239000010409 thin film Substances 0.000 title claims abstract description 51
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 239000000758 substrate Substances 0.000 claims abstract description 27
- 229910052733 gallium Inorganic materials 0.000 claims abstract description 6
- 229910052738 indium Inorganic materials 0.000 claims abstract description 5
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 5
- 150000002500 ions Chemical class 0.000 claims abstract description 4
- 239000004065 semiconductor Substances 0.000 claims description 39
- 238000000034 method Methods 0.000 claims description 17
- 229910005191 Ga 2 O 3 Inorganic materials 0.000 claims description 15
- 238000000151 deposition Methods 0.000 claims description 4
- 239000010410 layer Substances 0.000 description 115
- 229910005265 GaInZnO Inorganic materials 0.000 description 51
- 239000010408 film Substances 0.000 description 10
- 238000002161 passivation Methods 0.000 description 5
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 2
- 230000005355 Hall effect Effects 0.000 description 2
- 229910021417 amorphous silicon Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229920005591 polysilicon Polymers 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910004205 SiNX Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000005525 hole transport Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
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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
- H01L29/7869—Thin film transistors, i.e. transistors with a channel being at least partly a thin film having a semiconductor body comprising an oxide semiconductor material, e.g. zinc oxide, copper aluminium oxide, cadmium stannate
-
- 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
- H01L27/1222—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 with a particular composition, shape or crystalline structure of the active layer
- H01L27/1225—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 with a particular composition, shape or crystalline structure of the active layer with semiconductor materials not belonging to the group IV of the periodic table, e.g. InGaZnO
-
- 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
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
-
- 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
- H01L29/78696—Thin film transistors, i.e. transistors with a channel being at least partly a thin film characterised by the structure of the channel, e.g. multichannel, transverse or longitudinal shape, length or width, doping structure, or the overlap or alignment between the channel and the gate, the source or the drain, or the contacting structure of the channel
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Ceramic Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
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Abstract
Description
Claims (10)
- 기판;상기 기판 상에 형성된 게이트 전극;게이트 절연막에 의해 상기 게이트 전극과 절연되며 채널 영역, 소스 영역 및 드레인 영역을 포함하는 산화물 반도체층; 및상기 소스 영역 및 상기 드레인 영역과 연결되는 소스 전극 및 드레인 전극을 포함하며,상기 산화물 반도체층이 Ga의 농도가 서로 다른 이층 구조의 GIZO층으로 이루어진 박막 트랜지스터.
- 제 1 항에 있어서, 상기 이층 구조의 GIZO층은 상부층의 Ga의 농도가 하부층보다 높은 박막 트랜지스터.
- 제 2 항에 있어서, 상기 하부층의 Ga의 농도는 20 내지 40at%이고, 상기 상부 층의 Ga의 농도는 30 내지 60at%인 박막 트랜지스터.
- 기판 상에 게이트 전극을 형성하는 단계;상기 게이트 전극을 포함하는 상부에 게이트 절연막을 형성하는 단계;상기 게이트 절연막 상에 채널 영역, 소스 영역 및 드레인 영역을 제공하는 산화물 반도체층을 형성하는 단계; 및상기 소스 영역 및 드레인 영역과 연결되는 소스 전극 및 드레인 전극을 형성하는 단계를 포함하며,상기 산화물 반도체층 형성 단계는 타켓으로부터 In, Ga 및 Zn을 포함하는 이온이 증착되어 상기 게이트 절연막 상에 하부 GIZO층이 형성되도록 하는 단계; 및상기 하부 GIZO층 상에 Ga의 농도가 상기 하부 GIZO층보다 높은 상부 GIZO층이 형성되도록 하는 단계를 포함하는 박막 트랜지스터의 제조 방법.
- 제 4 항에 있어서, 상기 하부 GIZO층의 Ga의 농도는 20 내지 40at%가 되도록 하고, 상기 상부 GIZO층의 Ga의 농도는 30 내지 60at%가 되도록 하는 박막 트랜지스터의 제조 방법.
- 제 4 항에 있어서, 상기 타겟으로 InGaZnO 타겟 및 Ga2O3 타겟을 사용하는 박막 트랜지스터의 제조 방법.
- 제 6 항에 있어서, 상기 InGaZnO 타겟 및 상기 Ga2O3 타겟에 각각 바이어스 전력을 인가하고, 상기 Ga2O3 타겟에 인가되는 바이어스 전력의 크기를 조절하여 상기 Ga의 농도를 증가시키는 박막 트랜지스터의 제조 방법.
- 제 6 항에 있어서, 상기 InGaZnO 타겟 및 상기 Ga2O3 타겟에 각각 펄스 레이저를 조사하고, 상기 Ga2O3 타겟에 조사되는 펄스 레이저의 세기를 조절하여 상기 Ga의 농도를 증가시키는 박막 트랜지스터의 제조 방법.
- 제 6 항에 있어서, 상기 InGaZnO 타겟 및 상기 Ga2O3 타겟의 몰비를 조절하여 상기 Ga의 농도를 증가시키는 박막 트랜지스터의 제조 방법.
- 청구항 1 내지 청구항 3 중 어느 한 항의 박막 트랜지스터를 구비하는 평판 표시 장치.
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8395155B2 (en) | 2010-01-26 | 2013-03-12 | Samsung Electronics Co., Ltd. | Thin film transistors having an additional floating channel and methods of manufacturing the same |
US8841663B2 (en) | 2010-05-20 | 2014-09-23 | Samsung Display Co., Ltd. | Oxide semiconductor thin-film transistor |
KR20210021126A (ko) * | 2010-02-26 | 2021-02-24 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 반도체 장치 |
Family Cites Families (2)
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KR100786498B1 (ko) * | 2005-09-27 | 2007-12-17 | 삼성에스디아이 주식회사 | 투명박막 트랜지스터 및 그 제조방법 |
KR100785038B1 (ko) * | 2006-04-17 | 2007-12-12 | 삼성전자주식회사 | 비정질 ZnO계 TFT |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8395155B2 (en) | 2010-01-26 | 2013-03-12 | Samsung Electronics Co., Ltd. | Thin film transistors having an additional floating channel and methods of manufacturing the same |
KR20210021126A (ko) * | 2010-02-26 | 2021-02-24 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 반도체 장치 |
US11682562B2 (en) | 2010-02-26 | 2023-06-20 | Semiconductor Energy Laboratory Co., Ltd. | Method for manufacturing semiconductor device |
US8841663B2 (en) | 2010-05-20 | 2014-09-23 | Samsung Display Co., Ltd. | Oxide semiconductor thin-film transistor |
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