JP2006245031A - 薄膜トランジスタパネル - Google Patents
薄膜トランジスタパネル Download PDFInfo
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- JP2006245031A JP2006245031A JP2005054402A JP2005054402A JP2006245031A JP 2006245031 A JP2006245031 A JP 2006245031A JP 2005054402 A JP2005054402 A JP 2005054402A JP 2005054402 A JP2005054402 A JP 2005054402A JP 2006245031 A JP2006245031 A JP 2006245031A
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- thin film
- film transistor
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- transistor panel
- metal oxide
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- 239000010409 thin film Substances 0.000 title claims abstract description 110
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 34
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 34
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 6
- 239000010408 film Substances 0.000 claims description 71
- 239000004065 semiconductor Substances 0.000 claims description 25
- 239000012535 impurity Substances 0.000 claims description 11
- 239000004020 conductor Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 15
- 229910052782 aluminium Inorganic materials 0.000 abstract description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052804 chromium Inorganic materials 0.000 abstract description 4
- 239000011651 chromium Substances 0.000 abstract description 4
- 239000002019 doping agent Substances 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- 238000006116 polymerization reaction Methods 0.000 abstract 1
- 239000012780 transparent material Substances 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 description 18
- 239000011521 glass Substances 0.000 description 10
- 239000010410 layer Substances 0.000 description 10
- 239000000758 substrate Substances 0.000 description 10
- 229910052581 Si3N4 Inorganic materials 0.000 description 9
- 239000011229 interlayer Substances 0.000 description 9
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 238000005192 partition Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000005401 electroluminescence Methods 0.000 description 2
- 230000012447 hatching Effects 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- OFIYHXOOOISSDN-UHFFFAOYSA-N tellanylidenegallium Chemical compound [Te]=[Ga] OFIYHXOOOISSDN-UHFFFAOYSA-N 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- PNHVEGMHOXTHMW-UHFFFAOYSA-N magnesium;zinc;oxygen(2-) Chemical compound [O-2].[O-2].[Mg+2].[Zn+2] PNHVEGMHOXTHMW-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- UMJICYDOGPFMOB-UHFFFAOYSA-N zinc;cadmium(2+);oxygen(2-) Chemical compound [O-2].[O-2].[Zn+2].[Cd+2] UMJICYDOGPFMOB-UHFFFAOYSA-N 0.000 description 1
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Abstract
【解決手段】 薄膜トランジスタ5のゲート電極11はp型またはn型不純物を含む透明な金属酸化物によって形成され、ソース電極15およびドレイン電極16は透明な金属酸化物またはITOによって形成されている。したがって、薄膜トランジスタ5は光を透過する構造となっており、この薄膜トランジスタ5のほぼ全部を画素電極4で覆っているので、薄膜トランジスタ5と画素電極4との重合部が開口率に寄与することととなり、したがって開口率を大きくすることができる。なお、ゲート電極11およびドレイン電極16の各一端部に接続された走査ライン2およびドレインライン3は、ゲート電極11およびドレイン電極16と同一の透明な材料によって形成されているが、両ライン2、3は、アルミニウム、クロムなどの遮光性金属からなる補助容量電極6によって覆われている。
【選択図】 図1
Description
図1はこの発明の第1実施形態としての液晶表示装置における薄膜トランジスタパネルの要部の平面図を示し、図2(A)は図1のIIA−IIA線に沿う断面図を示し、図2(B)は図1のIIB−IIB線に沿う断面図を示す。この薄膜トランジスタパネルはガラス基板1を備えている。
図3はこの発明の第2実施形態としての液晶表示装置における薄膜トランジスタパネルの要部の平面図を示し、図4(A)は図3のIVA−IVA線に沿う断面図を示し、図4(B)は図3のIVB−IVB線に沿う断面図を示す。この場合も、図3を明確にする目的で、画素電極4の縁部に斜めの短い実線のハッチングが記入されている。
図5(A)、(B)はこの発明の第3実施形態としての有機EL(エレクトロルミネッセンス)表示装置の要部の断面図を示す。この有機EL表示装置において、図2(A)、(B)に示す薄膜トランジスタパネルと同一の構成については、同一の参照符号を付してその説明を省略する。この有機EL表示装置においては、薄膜トランジスタ5上に有機ELからなる発光部を具備する。
上記第3実施形態においては、薄膜トランジスタ5のソース電極15をn型金属酸化物により形成し、発光部のアノード電極22をITOなどの透明導電材料によって形成したものであった。しかし、n型金属酸化物からなる薄膜トランジスタ5のソース電極15に発光部のアノード電極22の機能を兼用させることも可能である。その場合の一例として、図5(A)において、n型金属酸化物からなるソース電極15を平坦化膜21上に右方向に延出してアノード電極とし、該アノード電極上に有機EL層およびカソード電極を積層して形成すればよい。
有機EL表示パネルの場合には、薄膜トランジスタは1組のアノード電極22、有機EL層25をおよびカソード電極26からなる1画素に対して2個設けるようにしてもよく(例えば、特開2004−171882号公報参照)、また3個設けるようにしてもよい(例えば、特開2003−195810号公報参照)。
2 走査ライン
3 データライン
4 画素電極
5 薄膜トランジスタ
6 補助容量電極
11 ゲート電極
12 ゲート絶縁膜
13 半導体薄膜
14 チャネル保護膜
15 ソース電極
16 ドレイン電極
17 層間絶縁膜
18 オーバーコート膜
19 コンタクトホール
20 保護膜
21 平坦化膜
22 アノード電極
23 コンタクトホール
24 仕切り壁
25 有機EL層
26 カソード電極
Claims (13)
- マトリクス状に設けられた走査ラインとデータラインとで囲まれた領域内に画素用電極が薄膜トランジスタを介して前記走査ラインおよび前記データラインに接続されて設けられた薄膜トランジスタパネルにおいて、前記薄膜トランジスタ、前記走査ラインおよび前記データラインは光を透過する構造となっており、前記画素用電極は前記薄膜トランジスタを覆うように設けられていることを特徴とする薄膜トランジスタパネル。
- 請求項1に記載の発明において、前記薄膜トランジスタは、金属酸化物からなる半導体薄膜、不純物を含んだ金属酸化物からなるドレイン電極、ソース電極およびゲート電極を有することを特徴とする薄膜トランジスタパネル。
- 請求項2に記載の発明において、前記ドレイン電極および前記ソース電極は、前記半導体薄膜上に設けられていることを特徴とする薄膜トランジスタパネル。
- 請求項1に記載の発明において、前記薄膜トランジスタは、金属酸化物からなる半導体薄膜、不純物を含んだ金属酸化物からなるゲート電極、透明導電材料からなるドレイン電極およびソース電極を有することを特徴とする薄膜トランジスタパネル。
- 請求項4に記載の発明において、前記ドレイン電極および前記ソース電極は、前記半導体薄膜下に設けられていることを特徴とする薄膜トランジスタパネル。
- 請求項2または4に記載の発明において、前記薄膜トランジスタのゲート電極はp型不純物を含んだ金属酸化物によって形成されていることを特徴とする薄膜トランジスタパネル。
- 請求項2または4に記載の発明において、前記ゲート電極に接続された前記走査ラインは前記ゲート電極と同一の材料によって形成され、前記ドレイン電極に接続された前記データラインは前記ドレイン電極と同一の材料によって形成されていることを特徴とする薄膜トランジスタパネル。
- 請求項1に記載の発明において、前記画素用電極は透明導電材料によって形成され、前記薄膜トランジスタのソース電極に接続されていることを特徴とする薄膜トランジスタパネル。
- 請求項1に記載の発明において、前記画素用電極間に該画素用電極間よりも幅広の遮光膜が設けられていることを特徴とする薄膜トランジスタパネル。
- 請求項1に記載の発明において、前記画素電極と前記データラインとの間に補助容量電極がそれぞれ絶縁膜を介して設けられ、前記補助容量電極は前記画素電極の全周辺部と重ね合わされていることを特徴とする薄膜トランジスタパネル。
- 請求項10に記載の発明において、前記補助容量電極は遮光性金属によって格子状に形成され、前記走査ラインおよび前記データラインを覆うように設けられていることを特徴とする薄膜トランジスタパネル。
- 請求項1に記載の発明において、前記薄膜トランジスタは、金属酸化物からなる半導体薄膜、不純物を含んだ金属酸化物からなるドレイン電極、ソース電極およびゲート電極を有し、パネルはさらに、アノード電極、有機EL層、カソード電極を有する発光部を具備することを特徴とする薄膜トランジスタパネル。
- 請求項1に記載の発明において、薄膜トランジスタのソース電極を延出された部分が前記発光部の前記アノード電極とされていることを特徴とする薄膜トランジスタパネル。
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EP06714490.7A EP1854146B1 (en) | 2005-02-28 | 2006-02-17 | Thin film transistor panel |
US11/357,595 US7633090B2 (en) | 2005-02-28 | 2006-02-17 | Thin film transistor panel |
PCT/JP2006/303351 WO2006093029A1 (en) | 2005-02-28 | 2006-02-17 | Thin film transistor panel |
CN200680006042XA CN101128939B (zh) | 2005-02-28 | 2006-02-17 | 薄膜晶体管面板 |
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WO2006093029A1 (en) | 2006-09-08 |
EP1854146A1 (en) | 2007-11-14 |
KR20070091681A (ko) | 2007-09-11 |
CN101128939B (zh) | 2011-01-12 |
TW200640013A (en) | 2006-11-16 |
KR100909547B1 (ko) | 2009-07-27 |
TWI318797B (en) | 2009-12-21 |
EP1854146B1 (en) | 2019-07-17 |
US20060194500A1 (en) | 2006-08-31 |
US7633090B2 (en) | 2009-12-15 |
CN101128939A (zh) | 2008-02-20 |
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