JP5026019B2 - 薄膜トランジスタ基板、薄膜トランジスタの製造方法、及び表示装置 - Google Patents
薄膜トランジスタ基板、薄膜トランジスタの製造方法、及び表示装置 Download PDFInfo
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- 229910052709 silver Inorganic materials 0.000 claims description 3
- 229910016570 AlCu Inorganic materials 0.000 claims description 2
- -1 AlSiCu Inorganic materials 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 claims 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 47
- 238000000034 method Methods 0.000 description 35
- 229910052581 Si3N4 Inorganic materials 0.000 description 23
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 23
- 239000011521 glass Substances 0.000 description 21
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/67—Thin-film transistors [TFT]
- H10D30/6758—Thin-film transistors [TFT] characterised by the insulating substrates
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/01—Manufacture or treatment
- H10D86/021—Manufacture or treatment of multiple TFTs
- H10D86/0231—Manufacture or treatment of multiple TFTs using masks, e.g. half-tone masks
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
- H10D86/411—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs characterised by materials, geometry or structure of the substrates
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- H—ELECTRICITY
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- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
- H10D86/441—Interconnections, e.g. scanning lines
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- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
- H10D86/451—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs characterised by the compositions or shapes of the interlayer dielectrics
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- H—ELECTRICITY
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- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
- H10D86/481—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs integrated with passive devices, e.g. auxiliary capacitors
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/40—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs
- H10D86/60—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple TFTs wherein the TFTs are in active matrices
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D86/00—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates
- H10D86/80—Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless steel or glass substrates characterised by multiple passive components, e.g. resistors, capacitors or inductors
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- Liquid Crystal (AREA)
- Thin Film Transistor (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
始めに、図1を用いて、本発明に係るTFT基板が適用される表示装置について説明する。図1は、表示装置に用いられるTFT基板の構成を示す正面図である。本発明に係る表示装置は、液晶表示装置を例として説明するが、あくまでも例示的なものであり、有機EL表示装置等の平面型表示装置(フラットパネルディスプレイ)等を用いることも可能である。
3 半導体層、 3a 下部容量電極、
31 チャネル領域、 32 ソース領域、 33 ドレイン領域、
4 SiO2膜、 5 第2の導電層
5a ゲート電極、 5b 上部容量電極、
6 SiO2膜、 7 第1の導電層、
7a 配線電極、 7b 下部容量電極、
8 TFT、 9 第3の導電層、
9a 画素電極、 9b 接続パターン
10a、10b コンタクトホール、
11 ガラス基板、 12 SiN膜、
13 半導体層、 13a 下部容量電極、
131 チャネル領域、 132 ソース領域、 133 ドレイン領域、
14 SiO2膜、
15 ゲート電極、 15a 上部容量電極、
16 SiO2膜、 17 配線電極、
18 上部絶縁層、 19 画素電極、
20、21 コンタクトホール、
101 TFT基板、
110 TFT基板、 111 表示領域、
112 額縁領域、 113 ゲート配線、
114 ソース配線、 115 走査信号駆動回路、
116 表示信号駆動回路、 117 画素、
118、119 外部配線
Claims (10)
- 基板と、
前記基板上に形成された配線電極及び下部容量電極を含む第1の導電層と、
前記第1の導電層を覆うように成膜された拡散防止層と、
前記拡散防止層上に島状に形成され、チャネル領域、ソース領域、及びドレイン領域を備えた半導体層と、
前記半導体層を覆うように成膜されたゲート絶縁層と、
前記ゲート絶縁層を介して前記チャネル領域の上に形成されたゲート電極と、前記拡散防止層及び前記ゲート絶縁層を介して前記下部容量電極の上に形成された上部容量電極と、を含む第2の導電層と、
前記第2の導電層を覆うように成膜された層間絶縁層と、
前記層間絶縁層上に島状に形成された画素電極を含む第3の導電層と、を有し、
前記第3の導電層が、前記層間絶縁層及び前記ゲート絶縁層を貫通して前記半導体層まで到達し、且つ前記層間絶縁層、前記ゲート絶縁層、及び前記拡散防止層を貫通して、前記第1の導電層まで到達することによって、前記半導体層のソース領域と前記配線電極とが、更に、前記半導体層のドレイン領域と前記下部容量電極とが、それぞれ前記第3の導電層を介して電気的に接続されている薄膜トランジスタ基板。 - 前記拡散防止層は、SiN膜よりなる請求項1に記載の薄膜トランジスタ基板。
- 前記第1の導電層は、前記半導体層、前記第2の導電層、及び前記第3の導電層よりも比抵抗の小さい材料である請求項1又は2に記載の薄膜トランジスタ基板。
- 前記第1の導電層は、Ag、Cu、AlCu、AlSiCu、Mo、Ti、又はWからなる単層膜、或いは前記単層膜を複数積層した積層膜である請求項1乃至3のいずれか1項に記載の薄膜トランジスタ基板。
- 前記第1の導電層の端部形状は、順テーパー形状である請求項1乃至4のいずれか1項に記載の薄膜トランジスタ基板。
- 前記第1の導電層の端部のテーパー角度は、10度から60度である請求項5に記載の薄膜トランジスタ基板。
- 前記ゲート電極と接続されるゲート配線と、前記配線電極と接続されるソース配線とが互いに交差するように形成されていることを特徴とする請求項1乃至6のいずれか1項に記載の薄膜トランジスタ基板。
- 請求項1乃至7のいずれか1項に記載の薄膜トランジスタ基板を用いた表示装置。
- 基板上に第1の導電層を形成し、当該第1の導電層から、配線電極及び下部容量電極を形成する工程と、
前記配線電極及び前記下部容量電極を覆うように拡散防止層を成膜する工程と、
前記拡散防止層上に、チャネル領域、ソース領域、及びドレイン領域を備えた半導体層を島状に形成する工程と、
前記半導体層を覆うようにゲート絶縁層を成膜する工程と、
前記ゲート絶縁層上に第2の導電層を形成し、当該第2の導電層から、前記ゲート絶縁層を介して前記チャネル領域の上に形成されたゲート電極と、前記拡散防止層及び前記ゲート絶縁層を介して前記下部容量電極の上に形成された上部容量電極と、を形成する工程と、
前記ゲート電極及び前記上部容量電極を覆うように層間絶縁層を成膜する工程と、
前記層間絶縁層及び前記ゲート絶縁層を貫通して前記半導体層のソース領域及びドレイン領域まで到達する第1のコンタクトホールと、前記層間絶縁層、前記ゲート絶縁層、及び前記拡散防止層を貫通して前記配線電極及び前記下部容量電極まで到達する第2のコンタクトホールとを同時に形成する工程と、
前記第1のコンタクトホール及び前記第2のコンタクトホールを形成した後、前記層間絶縁層の上に画素電極を含む第3の導電層を形成し、前記半導体層のソース領域と前記配線電極とを、更に、前記半導体層のドレイン領域と前記下部容量電極とを、それぞれ前記第3の導電層を介して電気的に接続する工程と、を有する薄膜トランジスタの製造方法。 - 前記拡散防止層をSiN膜とする請求項9に記載の薄膜トランジスタの製造方法。
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JP2006215693A JP5026019B2 (ja) | 2006-08-08 | 2006-08-08 | 薄膜トランジスタ基板、薄膜トランジスタの製造方法、及び表示装置 |
TW096124092A TW200818399A (en) | 2006-08-08 | 2007-07-03 | Thin film transistor substrate, manufacturing method of thin film transistor, and display device |
US11/782,213 US7388229B2 (en) | 2006-08-08 | 2007-07-24 | Thin film transistor substrate, manufacturing method of thin film transistor, and display device |
KR1020070077974A KR20080013742A (ko) | 2006-08-08 | 2007-08-03 | 박막 트랜지스터 기판, 박막 트랜지스터의 제조 방법 및표시장치 |
CNB2007101384899A CN100550399C (zh) | 2006-08-08 | 2007-08-08 | 薄膜晶体管衬底、薄膜晶体管的制造方法以及显示装置 |
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CN101911158B (zh) * | 2008-03-06 | 2015-04-01 | 夏普株式会社 | 显示装置、液晶显示装置、有机el显示装置、薄膜基板以及显示装置的制造方法 |
WO2011027656A1 (en) | 2009-09-04 | 2011-03-10 | Semiconductor Energy Laboratory Co., Ltd. | Transistor and display device |
WO2012020525A1 (ja) | 2010-08-07 | 2012-02-16 | シャープ株式会社 | 薄膜トランジスタ基板及びそれを備えた液晶表示装置 |
KR20140029992A (ko) * | 2012-08-31 | 2014-03-11 | 삼성디스플레이 주식회사 | 박막 트랜지스터 어레이 기판, 이를 포함하는 표시 장치 |
JP6181203B2 (ja) * | 2013-12-10 | 2017-08-16 | シャープ株式会社 | 半導体装置およびその製造方法 |
JP6315966B2 (ja) * | 2013-12-11 | 2018-04-25 | 三菱電機株式会社 | アクティブマトリックス基板およびその製造方法 |
CN110600486B (zh) * | 2014-07-23 | 2023-04-28 | 索尼公司 | 显示装置、制造显示装置的方法以及电子设备 |
JP6506973B2 (ja) * | 2015-01-21 | 2019-04-24 | 株式会社ジャパンディスプレイ | 表示装置 |
JP2017028012A (ja) * | 2015-07-17 | 2017-02-02 | ラピスセミコンダクタ株式会社 | 半導体製造装置及び半導体製造方法 |
WO2022097262A1 (ja) * | 2020-11-06 | 2022-05-12 | 三菱電機株式会社 | 半導体装置および電力変換装置 |
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JP3318652B2 (ja) * | 1996-12-17 | 2002-08-26 | 三菱電機株式会社 | 液晶表示装置およびこれに用いられるtftアレイ基板の製造方法 |
JP4034479B2 (ja) * | 1999-07-07 | 2008-01-16 | エルジー フィリップス エルシーディー カンパニー リミテッド | 薄膜トランジスタ基板および液晶表示装置 |
WO2001033292A1 (fr) * | 1999-10-29 | 2001-05-10 | Hitachi, Ltd. | Dispositif d'affichage a cristaux liquides |
JP2001217423A (ja) * | 2000-02-01 | 2001-08-10 | Sony Corp | 薄膜半導体装置及び表示装置とその製造方法 |
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JP2002026330A (ja) | 2000-07-06 | 2002-01-25 | Matsushita Electric Ind Co Ltd | 薄膜トランジスタ及び液晶表示素子 |
TW490858B (en) * | 2001-04-26 | 2002-06-11 | Samsung Electronics Co Ltd | Polycrystalline thin film transistor for liquid crystal device(LCD) and method of manufacturing the same |
JP2003045874A (ja) * | 2001-07-27 | 2003-02-14 | Semiconductor Energy Lab Co Ltd | 金属配線およびその作製方法、並びに金属配線基板およびその作製方法 |
JP2003330388A (ja) | 2002-05-15 | 2003-11-19 | Semiconductor Energy Lab Co Ltd | 半導体装置及びその作製方法 |
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JP2008040234A (ja) | 2008-02-21 |
US20080035930A1 (en) | 2008-02-14 |
CN101123259A (zh) | 2008-02-13 |
US7388229B2 (en) | 2008-06-17 |
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