JP2009016742A - 薄膜トランジスタ及びその製造方法 - Google Patents
薄膜トランジスタ及びその製造方法 Download PDFInfo
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- 239000010409 thin film Substances 0.000 title claims description 36
- 239000004065 semiconductor Substances 0.000 claims abstract description 64
- 239000000758 substrate Substances 0.000 claims abstract description 53
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 32
- 239000010703 silicon Substances 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 19
- 239000010408 film Substances 0.000 claims description 349
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 39
- 229910021417 amorphous silicon Inorganic materials 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 29
- 239000011159 matrix material Substances 0.000 claims description 25
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 24
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 24
- 238000009751 slip forming Methods 0.000 claims description 5
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- 238000005530 etching Methods 0.000 description 23
- 229910004298 SiO 2 Inorganic materials 0.000 description 21
- 239000007789 gas Substances 0.000 description 20
- 239000004973 liquid crystal related substance Substances 0.000 description 17
- 239000012535 impurity Substances 0.000 description 16
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 10
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 10
- 229910000077 silane Inorganic materials 0.000 description 10
- 230000015572 biosynthetic process Effects 0.000 description 9
- 238000000059 patterning Methods 0.000 description 9
- 229920002120 photoresistant polymer Polymers 0.000 description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 238000001312 dry etching Methods 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 7
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 5
- 238000002425 crystallisation Methods 0.000 description 5
- 230000008025 crystallization Effects 0.000 description 5
- 239000011229 interlayer Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000001020 plasma etching Methods 0.000 description 5
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 229910052796 boron Inorganic materials 0.000 description 4
- 239000000969 carrier Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000013067 intermediate product Substances 0.000 description 4
- 238000001459 lithography Methods 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- 229910021332 silicide Inorganic materials 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 238000000862 absorption spectrum Methods 0.000 description 3
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 229910001882 dioxygen Inorganic materials 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 150000001282 organosilanes Chemical group 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- 238000001039 wet etching Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 2
- JNDMLEXHDPKVFC-UHFFFAOYSA-N aluminum;oxygen(2-);yttrium(3+) Chemical compound [O-2].[O-2].[O-2].[Al+3].[Y+3] JNDMLEXHDPKVFC-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000002161 passivation Methods 0.000 description 2
- 238000009832 plasma treatment Methods 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 239000002210 silicon-based material Substances 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 229910019901 yttrium aluminum garnet Inorganic materials 0.000 description 2
- 229910016006 MoSi Inorganic materials 0.000 description 1
- 206010034972 Photosensitivity reaction Diseases 0.000 description 1
- 229910018557 Si O Inorganic materials 0.000 description 1
- 229910008484 TiSi Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002109 crystal growth method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 238000005224 laser annealing Methods 0.000 description 1
- 238000005499 laser crystallization Methods 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000036211 photosensitivity Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- NXHILIPIEUBEPD-UHFFFAOYSA-H tungsten hexafluoride Chemical compound F[W](F)(F)(F)(F)F NXHILIPIEUBEPD-UHFFFAOYSA-H 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- H01L29/78606—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
- H01L29/78633—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 with a light shield
-
- 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
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Thin Film Transistor (AREA)
- Liquid Crystal (AREA)
Abstract
【解決手段】 本実施例のTFT100は、絶縁基板107としてのガラス基板上に形成された遮光膜113と、遮光膜113上に形成された絶縁膜112と、絶縁膜112上に形成された半導体膜111と、半導体膜111上に形成されたゲート絶縁膜104とを基本的に有する。遮光膜113、絶縁膜112及び半導体膜111の三層から成る積層体100aは、各層が同時にパターニングされている。そして、積層体100aの各層がシリコン又はシリコンを含む材料から成る。
【選択図】 図1
Description
100a 積層体
104 ゲート絶縁膜
107 絶縁基板
111,111’,111'' 半導体膜
112,112’,112'' 絶縁膜
113,113’,113'' 遮光膜
21 アクティブマトリクス基板
33 携帯電話機
Claims (12)
- 絶縁基板上に形成された遮光膜と、この遮光膜上に形成された絶縁膜と、この絶縁膜上に形成された半導体膜と、この半導体膜上に形成されたゲート絶縁膜とを有し、前記遮光膜、前記絶縁膜及び前記半導体膜を含む複数層から成る積層体の各層が同時にパターニングされている、薄膜トランジスタにおいて、
前記積層体の各層がシリコン又はシリコンを含む材料から成る、
ことを特徴とする薄膜トランジスタ。 - 前記積層体は、膜厚方向での断面形状において左右対称となる側面を有する、
ことを特徴とする請求項1記載の薄膜トランジスタ。 - 前記積層体は、膜厚方向での断面形状が上方になるほど小さくなるようにテーパ状にパターニングされた側面を有する、
ことを特徴とする請求項1又は2記載の薄膜トランジスタ。 - 前記積層体は、膜厚方向での断面形状が上方になるほど小さくなるように階段状にパターニングされた側面を有する、
ことを特徴とする請求項1又は2記載の薄膜トランジスタ。 - 前記積層体は、膜厚方向での断面形状が上方になるほど小さくなるようにテーパ状かつ階段状にパターニングされた側面を有する、
ことを特徴とする請求項1又は2記載の薄膜トランジスタ。 - 前記各層の膜厚の総和は、前記ゲート絶縁膜の膜厚以下である、
ことを特徴とする請求項1乃至5のいずれか一項に記載の薄膜トランジスタ。 - 前記シリコンを含む材料はシリコンを主成分とする材料である、
ことを特徴とする請求項1乃至6のいずれか一項に記載の薄膜トランジスタ。 - 前記半導体膜及び前記遮光膜はシリコンから成り、前記絶縁膜は酸化シリコンから成る、
ことを特徴とする請求項7に記載の薄膜トランジスタ。 - 前記半導体膜は多結晶シリコンから成り、前記遮光膜はアモルファスシリコンから成る、
ことを特徴とする請求項8記載の薄膜トランジスタ。
- 請求項1乃至9のいずれか一項に記載の薄膜トランジスタを製造する方法であって、
前記絶縁基板上に前記積層体の各層を同一の成膜装置内で連続して形成した後、当該積層体の各層を同時にパターニングする、
ことを特徴とする薄膜トランジスタの製造方法。
- 絶縁基板上に多数の薄膜トランジスタが縦横に設けられて成るアクティブマトリクス基板において、
前記薄膜トランジスタが請求項1乃至9のいずれか一項に記載の薄膜トランジスタである、
ことを特徴とするアクティブマトリクス基板。
- アクティブマトリクス基板を含んで成る電子機器において、
前記アクティブマトリクス基板が請求項11記載のアクティブマトリクス基板である、
ことを特徴とする電子機器。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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JP2007179822A JP5458367B2 (ja) | 2007-07-09 | 2007-07-09 | 薄膜トランジスタ及びその製造方法 |
CN200810135662.4A CN101345261B (zh) | 2007-07-09 | 2008-07-09 | 薄膜晶体管及其制造方法 |
US12/169,854 US7932137B2 (en) | 2007-07-09 | 2008-07-09 | Thin film transistor and manufacturing method of the same |
US12/954,794 US8389345B2 (en) | 2007-07-09 | 2010-11-26 | Thin film transistor and manufacturing method of the same |
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JP2007179822A JP5458367B2 (ja) | 2007-07-09 | 2007-07-09 | 薄膜トランジスタ及びその製造方法 |
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JP2012276568A Division JP5610406B2 (ja) | 2012-12-19 | 2012-12-19 | 薄膜トランジスタの製造方法 |
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JP2009016742A true JP2009016742A (ja) | 2009-01-22 |
JP5458367B2 JP5458367B2 (ja) | 2014-04-02 |
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JP (1) | JP5458367B2 (ja) |
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Cited By (3)
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JP2014039009A (ja) * | 2012-08-10 | 2014-02-27 | Samsung Display Co Ltd | 薄膜トランジスタ基板及びその製造方法 |
JP2014053590A (ja) * | 2012-09-06 | 2014-03-20 | Samsung Display Co Ltd | 薄膜トランジスタ基板及びその製造方法 |
WO2020189718A1 (ja) * | 2019-03-20 | 2020-09-24 | 株式会社ジャパンディスプレイ | 半導体装置 |
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JP2007273919A (ja) * | 2006-03-31 | 2007-10-18 | Nec Corp | 半導体装置及びその製造方法 |
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Also Published As
Publication number | Publication date |
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US7932137B2 (en) | 2011-04-26 |
US8389345B2 (en) | 2013-03-05 |
CN101345261B (zh) | 2014-05-07 |
JP5458367B2 (ja) | 2014-04-02 |
US20090014721A1 (en) | 2009-01-15 |
CN101345261A (zh) | 2009-01-14 |
US20110068343A1 (en) | 2011-03-24 |
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