JP6339502B2 - アモルファス酸化物半導体薄膜トランジスタ作製方法 - Google Patents
アモルファス酸化物半導体薄膜トランジスタ作製方法 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims description 198
- 238000000034 method Methods 0.000 title claims description 121
- 239000010409 thin film Substances 0.000 title claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 127
- 239000002184 metal Substances 0.000 claims description 127
- 239000000758 substrate Substances 0.000 claims description 124
- 230000008569 process Effects 0.000 claims description 78
- 150000001768 cations Chemical class 0.000 claims description 71
- 150000002500 ions Chemical class 0.000 claims description 23
- 238000002513 implantation Methods 0.000 claims description 15
- 229910052733 gallium Inorganic materials 0.000 claims description 13
- 229910052718 tin Inorganic materials 0.000 claims description 13
- 239000000470 constituent Substances 0.000 claims description 12
- 229910052738 indium Inorganic materials 0.000 claims description 12
- 229910052735 hafnium Inorganic materials 0.000 claims description 11
- 238000005530 etching Methods 0.000 claims description 9
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 7
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical group [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 5
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 5
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 claims description 5
- 239000004973 liquid crystal related substance Substances 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 402
- 230000003287 optical effect Effects 0.000 description 52
- 239000000463 material Substances 0.000 description 41
- 238000004519 manufacturing process Methods 0.000 description 29
- 238000010586 diagram Methods 0.000 description 27
- 238000000151 deposition Methods 0.000 description 15
- -1 tin cation Chemical class 0.000 description 15
- 239000006096 absorbing agent Substances 0.000 description 13
- 230000015572 biosynthetic process Effects 0.000 description 13
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 12
- 239000012212 insulator Substances 0.000 description 12
- 239000011701 zinc Substances 0.000 description 12
- 238000005240 physical vapour deposition Methods 0.000 description 10
- 238000012545 processing Methods 0.000 description 10
- 229910004298 SiO 2 Inorganic materials 0.000 description 9
- 150000002739 metals Chemical class 0.000 description 9
- 238000000059 patterning Methods 0.000 description 9
- 230000008859 change Effects 0.000 description 8
- 239000003989 dielectric material Substances 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- 230000008021 deposition Effects 0.000 description 7
- 238000013461 design Methods 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 230000002829 reductive effect Effects 0.000 description 6
- 238000000926 separation method Methods 0.000 description 6
- 229910052725 zinc Inorganic materials 0.000 description 6
- 239000011787 zinc oxide Substances 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 238000000231 atomic layer deposition Methods 0.000 description 5
- 239000011651 chromium Substances 0.000 description 5
- 239000004020 conductor Substances 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 229920002120 photoresistant polymer Polymers 0.000 description 5
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 4
- 229910052581 Si3N4 Inorganic materials 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 4
- 230000001413 cellular effect Effects 0.000 description 4
- 238000005234 chemical deposition Methods 0.000 description 4
- 238000005137 deposition process Methods 0.000 description 4
- 239000002019 doping agent Substances 0.000 description 4
- 239000010408 film Substances 0.000 description 4
- 238000002161 passivation Methods 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 229910021417 amorphous silicon Inorganic materials 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 230000003750 conditioning effect Effects 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 230000000873 masking effect Effects 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 230000003071 parasitic effect Effects 0.000 description 3
- 238000005289 physical deposition Methods 0.000 description 3
- 238000001020 plasma etching Methods 0.000 description 3
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 238000011112 process operation Methods 0.000 description 3
- 238000004549 pulsed laser deposition Methods 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910004140 HfO Inorganic materials 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 229910052779 Neodymium Inorganic materials 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000004590 computer program Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 229940006448 gallium cation Drugs 0.000 description 2
- CKHJYUSOUQDYEN-UHFFFAOYSA-N gallium(3+) Chemical compound [Ga+3] CKHJYUSOUQDYEN-UHFFFAOYSA-N 0.000 description 2
- GVOLZAKHRKGRRM-UHFFFAOYSA-N hafnium(4+) Chemical compound [Hf+4] GVOLZAKHRKGRRM-UHFFFAOYSA-N 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- RJMMFJHMVBOLGY-UHFFFAOYSA-N indium(3+) Chemical compound [In+3] RJMMFJHMVBOLGY-UHFFFAOYSA-N 0.000 description 2
- 238000005468 ion implantation Methods 0.000 description 2
- 238000001459 lithography Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- 238000009832 plasma treatment Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 238000004528 spin coating Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- 238000002230 thermal chemical vapour deposition Methods 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000012780 transparent material Substances 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 238000001429 visible spectrum Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 229940006486 zinc cation Drugs 0.000 description 2
- IRLPACMLTUPBCL-KQYNXXCUSA-N 5'-adenylyl sulfate Chemical compound C1=NC=2C(N)=NC=NC=2N1[C@@H]1O[C@H](COP(O)(=O)OS(O)(=O)=O)[C@@H](O)[C@H]1O IRLPACMLTUPBCL-KQYNXXCUSA-N 0.000 description 1
- 241001572615 Amorphus Species 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- IIGJROFZMAKYMN-UHFFFAOYSA-N [C].FC(F)(F)F Chemical compound [C].FC(F)(F)F IIGJROFZMAKYMN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 1
- 239000005388 borosilicate glass Substances 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- VNTLIPZTSJSULJ-UHFFFAOYSA-N chromium molybdenum Chemical compound [Cr].[Mo] VNTLIPZTSJSULJ-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 229920002457 flexible plastic Polymers 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- CJNBYAVZURUTKZ-UHFFFAOYSA-N hafnium(iv) oxide Chemical compound O=[Hf]=O CJNBYAVZURUTKZ-UHFFFAOYSA-N 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 239000012788 optical film Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000012776 robust process Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000002207 thermal evaporation Methods 0.000 description 1
- FAQYAMRNWDIXMY-UHFFFAOYSA-N trichloroborane Chemical compound ClB(Cl)Cl FAQYAMRNWDIXMY-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000007666 vacuum forming Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
- IGELFKKMDLGCJO-UHFFFAOYSA-N xenon difluoride Chemical group F[Xe]F IGELFKKMDLGCJO-UHFFFAOYSA-N 0.000 description 1
- YSRUGFMGLKANGO-UHFFFAOYSA-N zinc hafnium(4+) indium(3+) oxygen(2-) Chemical compound [O-2].[Zn+2].[In+3].[Hf+4] YSRUGFMGLKANGO-UHFFFAOYSA-N 0.000 description 1
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
- TYHJXGDMRRJCRY-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) tin(4+) Chemical compound [O-2].[Zn+2].[Sn+4].[In+3] TYHJXGDMRRJCRY-UHFFFAOYSA-N 0.000 description 1
- BNEMLSQAJOPTGK-UHFFFAOYSA-N zinc;dioxido(oxo)tin Chemical compound [Zn+2].[O-][Sn]([O-])=O BNEMLSQAJOPTGK-UHFFFAOYSA-N 0.000 description 1
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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
- H01L29/7869—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
- H01L29/78693—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 the semiconducting oxide being amorphous
-
- 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
- H01L29/66969—Multistep manufacturing processes of devices having semiconductor bodies not comprising group 14 or group 13/15 materials
-
- 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
- H01L29/78618—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 characterised by the drain or the source properties, e.g. the doping structure, the composition, the sectional shape or the contact structure
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Ceramic Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Thin Film Transistor (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
- Liquid Crystal (AREA)
- Electrodes Of Semiconductors (AREA)
Description
本出願は、その全体がすべての目的のために参照により本明細書に組み込まれる、2011年11月18日に出願された「AMORPHOUS OXIDE SEMICONDUCTOR THIN FILM TRANSISTOR FABRICATION METHOD」と題する米国特許出願第13/299,780号(弁理士整理番号QUALP070/102626)の優先権を主張する。
13、15 光
14 可動反射層、層、反射層
14a 反射副層、伝導性層、副層
14b 支持層、誘電支持層、副層
14c 伝導性層、副層
16 光学スタック、層
16a 吸収層、光吸収体、副層、導体/吸収体副層
16b 誘電体、副層
18 ポスト、支持体、支持ポスト
19 ギャップ、キャビティ
20 透明基板、基板
21 プロセッサ、システムプロセッサ
22 アレイドライバ
23 ブラックマスク構造、ブラックマスク、干渉スタックブラックマスク構造
24 行ドライバ回路
25 犠牲層、犠牲材料
26 列ドライバ回路
27 ネットワークインターフェース
28 フレームバッファ
29 ドライバコントローラ
30 ディスプレイアレイ、パネル、ディスプレイ
32 テザー
34 変形可能層
35 スペーサ層
40 ディスプレイデバイス
41 ハウジング
43 アンテナ
45 スピーカー
46 マイクロフォン
47 トランシーバ
48 入力デバイス
50 電源
52 調整ハードウェア
60a 第1のライン時間、ライン時間
60b 第2のライン時間、ライン時間
60c 第3のライン時間、ライン時間
60d 第4のライン時間、ライン時間
60e ライン時間、第5のライン時間
62 高いセグメント電圧
64 低いセグメント電圧
70 開放電圧
72 高い保持電圧
74 高いアドレス電圧
76 低い保持電圧
78 低いアドレス電圧
122 基板
124 酸化物半導体層
126 第1の誘電体層
128 第1の金属層
130 下部金属層
131 下部誘電体層
132 チャネルエリア
134 ソースエリア
136 ドレインエリア
142 誘電体側壁
144、146 高濃度ドープn型酸化物半導体層
152、154 領域
162 第2の誘電体層
164 ソースコンタクト
166 ドレインコンタクト
200、500、600 TFTデバイス
202 第1の金属層128の寸法
204 TFTデバイス200の寸法
Claims (24)
- 基板を設けるステップであって、前記基板は表面を有し、前記表面は、ソースエリアと、ドレインエリアと、チャネルエリアとを含み、前記基板は、前記基板の前記表面上の酸化物半導体層と、前記基板の前記チャネルエリアの上にある前記酸化物半導体層上のマスクとを含むステップと、
金属カチオンを、前記基板の前記ソースエリアおよび前記ドレインエリアの上にある前記酸化物半導体層中に注入して、ドープn型酸化物半導体層を形成するステップと、
を含み、
前記金属カチオンの注入深さが前記酸化物半導体層の厚さに等しく、
前記金属カチオンが、ハフニウムカチオン(Hf+)、およびスズカチオン(Sn+)のうちの1つまたは複数から選択され、
前記金属カチオンが、前記酸化物半導体層の構成金属のカチオンである、方法。 - 前記マスクが、薄膜トランジスタ(TFT)のための金属ゲートを含む、請求項1に記載の方法。
- 前記酸化物半導体層が、インジウム(In)、ガリウム(Ga)、亜鉛(Zn)、ハフニウム(Hf)、およびスズ(Sn)のうちの1つまたは複数を含む、請求項1または2に記載の方法。
- 前記チャネルエリアの上にある前記酸化物半導体層上に第1の誘電体層を形成するステップと、前記第1の誘電体層上に第1の金属層を形成するステップと、をさらに含む、請求項1から3のいずれか一項に記載の方法。
- 前記マスクが前記第1の金属層を含む、請求項4に記載の方法。
- 前記第1の金属層および前記ドープn型酸化物半導体層上に、第2の誘電体層を形成するステップと、
前記第2の誘電体層の部分を除去して、前記基板の前記ソースエリアの上にある前記ドープn型酸化物半導体層と、前記基板の前記ドレインエリアの上にある前記ドープn型酸化物半導体層とを露出させるステップと、
第1のコンタクトと第2のコンタクトとを形成するステップであって、前記第1のコンタクトが、前記基板の前記ソースエリアの上にある前記ドープn型酸化物半導体層に接触し、前記第2のコンタクトが、前記基板の前記ドレインエリアの上にある前記ドープn型酸化物半導体層に接触するステップと、
をさらに含む、請求項4に記載の方法。 - 前記第1の金属層上、ならびに、前記基板の前記ソースエリアおよび前記ドレインエリアの上にある前記酸化物半導体層上に、第2の誘電体層を形成するステップと、
前記第2の誘電体層をエッチングして、前記第1の金属層および前記第1の誘電体層に関連付けられた、誘電体側壁を形成するステップと、
をさらに含む、請求項4に記載の方法。 - 前記金属カチオンが、約1019原子/cm3よりも高い、前記基板の前記ソースエリアおよび前記ドレインエリアの上にある前記酸化物半導体層中の濃度まで注入される、請求項1から7のいずれか一項に記載の方法。
- 前記酸化物半導体層が、約10〜100ナノメートルの厚さである、請求項1から8のいずれか一項に記載の方法。
- 第1のイオンを、前記チャネルエリアの上にある前記酸化物半導体層の少なくとも1つの領域中に注入するステップをさらに含む、請求項1から9のいずれか一項に記載の方法。
- 前記第1のイオンが金属カチオンである、請求項10に記載の方法。
- 前記第1のイオンが、約1012原子/cm2と1020原子/cm2との間のドーズを使用して注入される、請求項10に記載の方法。
- 請求項1から12に記載の方法のいずれかに従って作製されるデバイス。
- 表面を含む基板と、
前記基板表面上の酸化物半導体層であって、前記酸化物半導体層は、チャネル領域と、ソース領域と、ドレイン領域とを含み、前記酸化物半導体層の前記ソース領域および前記ドレイン領域は、約1019原子/cm3よりも高い濃度まで金属カチオンが注入されたドープn型酸化物半導体層であり、前記金属カチオンの注入深さが前記酸化物半導体層の厚さに等しい、酸化物半導体層と、
前記酸化物半導体層の前記チャネル領域上の第1の誘電体層と、
前記第1の誘電体層上の第1の金属層と、
を備え、
前記金属カチオンが、ハフニウムカチオン(Hf+)、およびスズカチオン(Sn+)のうちの1つまたは複数から選択され、
前記金属カチオンが、前記酸化物半導体層の構成金属のカチオンである、装置。 - 前記酸化物半導体層が、インジウム(In)、ガリウム(Ga)、亜鉛(Zn)、ハフニウム(Hf)、およびスズ(Sn)のうちの1つまたは複数を含む、請求項14に記載の装置。
- 前記ソース領域に接触する第1のコンタクトと、前記ドレイン領域に接触する第2のコンタクトとをさらに備える、請求項14または15に記載の装置。
- 前記第1の誘電体層の両側、および前記第1の金属層の両側の誘電体側壁であって、第1の誘電体側壁および第2の誘電体側壁が、前記酸化物半導体層の前記チャネル領域の部分の上にある、誘電体側壁、をさらに備える、請求項14に記載の装置。
- 前記装置が、
第2の誘電体層をさらに備え、前記第2の誘電体層が、前記第1の金属層、前記酸化物半導体層の前記ソース領域、および前記酸化物半導体層の前記ドレイン領域上である、請求項14から17のいずれか一項に記載の装置。 - 前記基板がガラス基板を含む、請求項14から18のいずれか一項に記載の装置。
- ディスプレイと、
前記ディスプレイと通信するように構成され、画像データを処理するように構成されるプロセッサと、
前記プロセッサと通信するように構成されるメモリデバイスと、
をさらに備える、請求項14から19のいずれか一項に記載の装置。 - 前記ディスプレイに少なくとも1つの信号を送るように構成されるドライバ回路と、
前記ドライバ回路に前記画像データの少なくとも一部を送るように構成されるコントローラとをさらに備える、請求項20に記載の装置。 - 前記プロセッサに前記画像データを送るように構成される画像ソースモジュールであって、受信機、トランシーバ、および送信機のうちの少なくとも1つを含む、画像ソースモジュールをさらに備える、請求項20または21に記載の装置。
- 入力データを受信し、前記入力データを前記プロセッサに通信するように構成される入力デバイスをさらに備える、請求項20から22のいずれか一項に記載の装置。
- 前記ディスプレイが、液晶ディスプレイまたは有機発光ダイオードディスプレイである、請求項20から23のいずれか一項に記載の装置。
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