JP2008227530A - 薄膜トランジスタ - Google Patents
薄膜トランジスタ Download PDFInfo
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- JP2008227530A JP2008227530A JP2008121611A JP2008121611A JP2008227530A JP 2008227530 A JP2008227530 A JP 2008227530A JP 2008121611 A JP2008121611 A JP 2008121611A JP 2008121611 A JP2008121611 A JP 2008121611A JP 2008227530 A JP2008227530 A JP 2008227530A
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- film transistor
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- 239000010409 thin film Substances 0.000 title claims abstract description 51
- 239000013078 crystal Substances 0.000 claims abstract description 70
- 239000004065 semiconductor Substances 0.000 claims abstract description 58
- 238000002425 crystallisation Methods 0.000 claims abstract description 31
- 239000000758 substrate Substances 0.000 claims abstract description 24
- 230000008025 crystallization Effects 0.000 claims abstract description 22
- 239000010408 film Substances 0.000 claims description 43
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 239000004973 liquid crystal related substance Substances 0.000 claims description 5
- 239000003054 catalyst Substances 0.000 abstract description 41
- 238000000034 method Methods 0.000 abstract description 33
- 229910021417 amorphous silicon Inorganic materials 0.000 abstract description 26
- 238000004519 manufacturing process Methods 0.000 abstract description 17
- 239000012528 membrane Substances 0.000 abstract 4
- 239000010410 layer Substances 0.000 description 204
- 239000002184 metal Substances 0.000 description 53
- 229910052751 metal Inorganic materials 0.000 description 53
- 238000010438 heat treatment Methods 0.000 description 18
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 17
- 229910052581 Si3N4 Inorganic materials 0.000 description 10
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 238000009792 diffusion process Methods 0.000 description 8
- 229910052814 silicon oxide Inorganic materials 0.000 description 8
- 238000001069 Raman spectroscopy Methods 0.000 description 5
- 238000000059 patterning Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 4
- 238000011109 contamination Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229920002120 photoresistant polymer Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- OBNDGIHQAIXEAO-UHFFFAOYSA-N [O].[Si] Chemical compound [O].[Si] OBNDGIHQAIXEAO-UHFFFAOYSA-N 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 238000005468 ion implantation Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
Classifications
-
- 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
- H01L29/78651—Silicon transistors
- H01L29/78654—Monocrystalline silicon transistors
-
- 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
- H01L29/66007—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 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
- H01L29/66007—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
- H01L29/66772—Monocristalline silicon transistors on insulating substrates, e.g. quartz substrates
-
- 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
- H01L29/78651—Silicon transistors
- H01L29/7866—Non-monocrystalline silicon transistors
- H01L29/78672—Polycrystalline or microcrystalline silicon transistor
- H01L29/78675—Polycrystalline or microcrystalline silicon transistor with normal-type structure, e.g. with top gate
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Recrystallisation Techniques (AREA)
- Thin Film Transistor (AREA)
Abstract
【解決手段】薄膜トランジスタは基板と、該基板上に形成され、チャンネル層にシード及び結晶粒境界が存在しない半導体層パターンと、該半導体層パターン上に形成されたゲート絶縁膜及び該ゲート絶縁膜上に形成されたゲート電極とを含む。この方法は、基板上に非晶質シリコン層を形成する段階と、該非晶質シリコン層を結晶化し、パターニングしてチャンネル層にシード及び結晶粒境界が存在しない半導体層パターンを形成する段階と、前記半導体層パターン上にゲート絶縁膜を形成する段階及び前記ゲート絶縁膜上にゲート電極を形成する段階とを含む。結晶化触媒の均一な低濃度制御及び結晶化位置を調節することによって、薄膜トランジスタのチャンネル層内にシード及び結晶粒境界が存在しないようにしたり、結晶粒境界が一つ存在するように調節して素子特性及び均一度を良くする。
【選択図】図2
Description
11、76 半導体層パターン
12、22、32、42、77a ソース領域
13、23、33、43、77b ドレイン領域
14、24、34、44、77c チャンネル層
21、31、41、75、85、95 シード(seed)
W 半導体層パターンの幅
L 半導体層パターンの長さ
R 結晶粒の直径
r 結晶粒の半径
71、81、91 非晶質シリコン層
72 第1のキャッピング層パターン
73 第2のキャッピング層
74、84、94 金属触媒
82 第1のキャッピング層
83 第2のキャッピング層パターン
92 キャッピング層
Claims (9)
- 基板と、
前記基板上に形成され、チャンネル層にシード(seed)及び結晶粒境界(Grain Boundary)が存在しないSuper Grain Silicon(SGS)結晶化法により結晶化させた半導体層パターンと、
前記半導体層パターン上に形成されたゲート絶縁膜と、
前記ゲート絶縁膜上に形成されたゲート電極と、を含み、
前記シードはソース領域またはドレイン領域に形成されることを特徴とする薄膜トランジスタ。 - 基板と、
前記基板上に形成され、チャンネル層にシード(seed)及び結晶粒境界(Grain Boundary)が存在しないSuper Grain Silicon(SGS)結晶化法により結晶化させた半導体層パターンと、
前記半導体層パターン上に形成されたゲート絶縁膜と、
前記ゲート絶縁膜上に形成されたゲート電極と、を含み、
前記シードはソース領域とドレイン領域との間でチャンネル層の外部に形成されることを特徴とする薄膜トランジスタ。 - 前記半導体層パターンの幅と長さが結晶粒の半径よりも小さいことを特徴とする請求項1に記載の薄膜トランジスタ。
- 前記半導体層パターンの幅と長さが結晶粒の直径よりも小さいことを特徴とする請求項2に記載の薄膜トランジスタ。
- 前記チャンネル層の結晶化比率が0.7ないし0.9であることを特徴とする請求項1または2に記載の薄膜トランジスタ。
- 基板と、
前記基板上に形成され、チャンネル層に結晶粒境界が一つ存在するSuper Grain Silicon(SGS)結晶化法により結晶化させた半導体層パターンと、
前記半導体層パターン上に形成されたゲート絶縁膜と、
前記ゲート絶縁膜上に形成されたゲート電極と、
を含むことを特徴とする薄膜トランジスタ。 - シードは、ソース領域またはドレイン領域に形成され、半導体層パターンの長さが結晶粒の半径よりも1.1ないし1.3倍であることを特徴とする請求項6に記載の薄膜トランジスタ。
- 前記薄膜トランジスタは、液晶表示素子または有機電界発光素子に用いられることを特徴とする請求項1または2に記載の薄膜トランジスタ。
- 前記薄膜トランジスタは、液晶表示素子または有機電界発光素子に用いられることを特徴とする請求項6に記載の薄膜トランジスタ。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020040050915A KR100712101B1 (ko) | 2004-06-30 | 2004-06-30 | 박막트랜지스터 및 그의 제조 방법 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2004358999A Division JP2006019689A (ja) | 2004-06-30 | 2004-12-10 | 薄膜トランジスタ及びその製造方法 |
Publications (2)
Publication Number | Publication Date |
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JP2008227530A true JP2008227530A (ja) | 2008-09-25 |
JP4384234B2 JP4384234B2 (ja) | 2009-12-16 |
Family
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Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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JP2004358999A Pending JP2006019689A (ja) | 2004-06-30 | 2004-12-10 | 薄膜トランジスタ及びその製造方法 |
JP2008121611A Active JP4384234B2 (ja) | 2004-06-30 | 2008-05-07 | 薄膜トランジスタ |
Family Applications Before (1)
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JP2004358999A Pending JP2006019689A (ja) | 2004-06-30 | 2004-12-10 | 薄膜トランジスタ及びその製造方法 |
Country Status (5)
Country | Link |
---|---|
US (3) | US20060003503A1 (ja) |
EP (1) | EP1612852A1 (ja) |
JP (2) | JP2006019689A (ja) |
KR (1) | KR100712101B1 (ja) |
CN (1) | CN100481509C (ja) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
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KR100477103B1 (ko) * | 2001-12-19 | 2005-03-18 | 삼성에스디아이 주식회사 | 금속유도화 측면결정화방법을 이용한 멀티플 게이트 박막트랜지스터 및 그의 제조방법 |
TWI359441B (en) | 2003-09-16 | 2012-03-01 | Univ Columbia | Processes and systems for laser crystallization pr |
KR100611659B1 (ko) * | 2004-07-07 | 2006-08-10 | 삼성에스디아이 주식회사 | 박막트랜지스터 및 그의 제조 방법 |
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KR100731752B1 (ko) * | 2005-09-07 | 2007-06-22 | 삼성에스디아이 주식회사 | 박막트랜지스터 |
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KR100788551B1 (ko) | 2006-12-29 | 2007-12-26 | 삼성에스디아이 주식회사 | 유기 전계 발광 표시 장치 및 그 제조 방법 |
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2004
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- 2004-12-10 JP JP2004358999A patent/JP2006019689A/ja active Pending
- 2004-12-20 US US11/019,658 patent/US20060003503A1/en not_active Abandoned
- 2004-12-22 EP EP04090506A patent/EP1612852A1/en not_active Ceased
- 2004-12-31 CN CNB2004100758951A patent/CN100481509C/zh active Active
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JP2006019689A (ja) | 2006-01-19 |
KR100712101B1 (ko) | 2007-05-02 |
KR20060001751A (ko) | 2006-01-06 |
EP1612852A1 (en) | 2006-01-04 |
US20060003503A1 (en) | 2006-01-05 |
JP4384234B2 (ja) | 2009-12-16 |
CN1716633A (zh) | 2006-01-04 |
US20110020990A1 (en) | 2011-01-27 |
US7935586B2 (en) | 2011-05-03 |
US20060263956A1 (en) | 2006-11-23 |
US7838352B2 (en) | 2010-11-23 |
CN100481509C (zh) | 2009-04-22 |
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