JP5511157B2 - 発光表示装置 - Google Patents
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- JP5511157B2 JP5511157B2 JP2008174484A JP2008174484A JP5511157B2 JP 5511157 B2 JP5511157 B2 JP 5511157B2 JP 2008174484 A JP2008174484 A JP 2008174484A JP 2008174484 A JP2008174484 A JP 2008174484A JP 5511157 B2 JP5511157 B2 JP 5511157B2
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- 239000004065 semiconductor Substances 0.000 claims description 97
- 230000008859 change Effects 0.000 claims description 28
- 238000010521 absorption reaction Methods 0.000 claims description 20
- 230000007246 mechanism Effects 0.000 claims description 19
- 230000001678 irradiating effect Effects 0.000 claims description 15
- 238000000295 emission spectrum Methods 0.000 claims description 5
- 229910052733 gallium Inorganic materials 0.000 claims description 5
- 229910052738 indium Inorganic materials 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000002834 transmittance Methods 0.000 claims 1
- 239000010408 film Substances 0.000 description 82
- 239000010410 layer Substances 0.000 description 31
- 239000000463 material Substances 0.000 description 21
- 230000035882 stress Effects 0.000 description 19
- 238000000034 method Methods 0.000 description 18
- 238000001755 magnetron sputter deposition Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 14
- 239000000758 substrate Substances 0.000 description 12
- 238000000206 photolithography Methods 0.000 description 11
- 230000001681 protective effect Effects 0.000 description 10
- 239000010936 titanium Substances 0.000 description 8
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 229910052750 molybdenum Inorganic materials 0.000 description 7
- 239000011733 molybdenum Substances 0.000 description 7
- 238000001039 wet etching Methods 0.000 description 7
- 229910052581 Si3N4 Inorganic materials 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 6
- 229910052814 silicon oxide Inorganic materials 0.000 description 6
- 230000008646 thermal stress Effects 0.000 description 6
- 229910052721 tungsten Inorganic materials 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 5
- 230000005525 hole transport Effects 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 229910052719 titanium Inorganic materials 0.000 description 5
- 229910007541 Zn O Inorganic materials 0.000 description 4
- 239000002274 desiccant Substances 0.000 description 4
- 238000001312 dry etching Methods 0.000 description 4
- 229910001325 element alloy Inorganic materials 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000010409 thin film Substances 0.000 description 4
- 239000000969 carrier Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000005401 electroluminescence Methods 0.000 description 1
- 238000005566 electron beam evaporation Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000013081 microcrystal Substances 0.000 description 1
- IBHBKWKFFTZAHE-UHFFFAOYSA-N n-[4-[4-(n-naphthalen-1-ylanilino)phenyl]phenyl]-n-phenylnaphthalen-1-amine Chemical compound C1=CC=CC=C1N(C=1C2=CC=CC=C2C=CC=1)C1=CC=C(C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C3=CC=CC=C3C=CC=2)C=C1 IBHBKWKFFTZAHE-UHFFFAOYSA-N 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- TVIVIEFSHFOWTE-UHFFFAOYSA-K tri(quinolin-8-yloxy)alumane Chemical compound [Al+3].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 TVIVIEFSHFOWTE-UHFFFAOYSA-K 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/123—Connection of the pixel electrodes to the thin film transistors [TFT]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being other than a semiconductor body, e.g. an insulating body
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/12—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/24—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only semiconductor materials not provided for in groups H01L29/16, H01L29/18, H01L29/20, H01L29/22
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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 adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/124—Insulating layers formed between TFT elements and OLED elements
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/126—Shielding, e.g. light-blocking means over the TFTs
Description
さらに、本発明の第二は、発光素子と、ゲート電極、ゲート絶縁膜、半導体膜、ソース電極、ドレイン電極を少なくとも有し前記発光素子を駆動するTFTと、からなる画素を複数備える発光表示装置であって、
前記半導体膜を構成する半導体は、In、Ga、Zn又はSnのいずれかを含む酸化物半導体であり、前記発光素子から放射される光のうち、前記半導体の吸収端波長より長波長の光の少なくとも一部を透過させることにより前記半導体膜に照射する機構が設けられ、前記機構は、前記TFTの閾値電圧の変化量と、前記発光素子の発光スペクトルとに応じて、前記半導体膜に照射される光の波長と強度とが調整されたものであることを特徴とする発光表示装置。
本実施例では、光照射による閾値電圧変化の効果を見積もるために、以下のTFTを作製し、閾値電圧変化の波長依存性を調る。
本実施例では、上記実施例1と同様のTFTを製作し電気的ストレスによって発生した閾値電圧変化を様々な条件における光照射によって補償又は抑制できるかを調べる。
(4−1)光照射なし
(4−2)400nm、0.02mW/cm2
(4−3)400nm、0.2mW/cm2
(4−4)600nm、0.2mW/cm2
本実施例では、図5に示されている本発明の一実施形態である発光表示装置を製作する。
本実施例では、図6に示されている本発明の一実施形態である発光表示装置を製作する。
11 下地膜
20 ゲート電極
21 反射板
30 ゲート絶縁膜
40 半導体膜
50 ソース電極
51 ドレイン電極
60 チャネル保護膜
70 遮光膜
71 透光性の領域
80 保護膜
81 コンタクトホール
90 アノード電極
100 正孔輸送層
110 発光層
120 電子輸送層
130 カソード電極
140 乾燥剤
150 封止缶
200 TFT
211 ゲート絶縁膜
212 ゲート電極
221 ソース電極
222 ドレイン電極
230 チャネル層
Claims (14)
- 発光素子と、ゲート電極、ゲート絶縁膜、半導体膜、ソース電極、ドレイン電極を少なくとも有し前記発光素子を駆動するTFTと、からなる画素を複数備える発光表示装置であって、
前記半導体膜を構成する半導体は、In、Ga、Zn又はSnのいずれかを含む酸化物半導体であり、前記発光素子から放射される光のうち、前記半導体の吸収端波長より長波長の光の少なくとも一部を透過させることにより前記半導体膜に照射する機構が設けられ、前記機構は、前記TFTの閾値電圧変化を抑制するように、前記発光素子に応じて、前記半導体膜に照射される光の波長と強度とが調整されたものであることを特徴とする発光表示装置。 - 発光素子と、ゲート電極、ゲート絶縁膜、半導体膜、ソース電極、ドレイン電極を少なくとも有し前記発光素子を駆動するTFTと、からなる画素を複数備える発光表示装置であって、
前記半導体膜を構成する半導体は、In、Ga、Zn又はSnのいずれかを含む酸化物半導体であり、前記発光素子から放射される光のうち、前記半導体の吸収端波長より長波長の光の少なくとも一部を透過させることにより前記半導体膜に照射する機構が設けられ、前記機構は、前記TFTの閾値電圧の変化量と、前記発光素子の発光スペクトルとに応じて、前記半導体膜に照射される光の波長と強度とが調整されたものであることを特徴とする発光表示装置。 - 前記閾値電圧変化は、前記発光素子の駆動に伴い前記TFTに生ずる電気的ストレスに起因するものであることを特徴とする請求項1または2に記載の発光表示装置。
- 前記電気的ストレスは、前記TFTのドレイン・ソース電極間電圧Vds、ゲート・ソース電極間電圧Vgs、および、前記TFTの駆動時間とから構成される前記TFTの駆動条件により規定されることを特徴とする請求項3に記載の発光表示装置。
- 前記機構は、前記発光素子と前記半導体膜との間に設けられた透光性領域の透光率によって、前記半導体膜に透過される光の波長と強度とが調整されたものであることを特徴とする請求項1乃至4のいずれか1項に記載の発光表示装置。
- 前記機構は、前記発光素子と前記半導体膜との間に設けられた透光性領域の、前記発光素子と前記半導体膜との間に設けられた遮光膜に対する面積比または位置によって、前記半導体膜に透過される光の波長と強度とが調整されたものであることを特徴とする請求項1乃至4のいずれか1項に記載の発光表示装置。
- 前記機構は、前記半導体の吸収端波長より短波長の光から前記半導体膜を遮蔽する波長選択手段を有することを特徴とする請求項1乃至6のいずれか1項に記載の発光表示装置。
- 前記波長選択手段は、前記半導体膜と前記発光素子との間に設けられたカラーフィルタであることを特徴とする請求項7に記載の発光表示装置。
- 前記波長選択手段は、前記発光素子から放射される光のうち、前記半導体の吸収端波長よりも長い波長の光の少なくとも一部を反射する反射体であり、該反射体からの反射光が前記半導体膜に照射されることが可能な位置に、前記反射体が設けられてなることを特徴とする請求項7に記載の発光表示装置。
- 前記遮光膜は、前記半導体膜と前記発光素子との間において、前記発光素子毎に設けられた金属層であることを特徴とする請求項6に記載の発光表示装置。
- 前記遮光膜は、前記半導体膜と前記発光素子との間に位置する、前記ゲート電極であることを特徴とする請求項6に記載の発光表示装置。
- 前記透光性領域は、前記遮光膜に形成されたスリットであることを特徴とする請求項6に記載の発光表示装置。
- 前記半導体のギャップ内準位の面密度は、1013cm−2eV−1以下であることを特徴とする請求項1乃至12のいずれか1項に記載の発光表示装置。
- 前記半導体のバンドギャップが2.7eV以上であることを特徴とする請求項1乃至13のいずれか1項に記載の発光表示装置。
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008174484A JP5511157B2 (ja) | 2008-07-03 | 2008-07-03 | 発光表示装置 |
US13/001,000 US8592815B2 (en) | 2008-07-03 | 2009-06-30 | Light emitting display apparatus |
PCT/JP2009/062263 WO2010002029A1 (en) | 2008-07-03 | 2009-06-30 | Light emitting display apparatus |
US14/059,949 US9153635B2 (en) | 2008-07-03 | 2013-10-22 | Light emitting display apparatus |
US14/842,649 US9450037B2 (en) | 2008-07-03 | 2015-09-01 | Light emitting display apparatus |
US15/243,091 US9911797B2 (en) | 2008-07-03 | 2016-08-22 | Light emitting display apparatus |
US15/878,825 US10319798B2 (en) | 2008-07-03 | 2018-01-24 | Light emitting display apparatus |
US16/401,406 US11205689B2 (en) | 2008-07-03 | 2019-05-02 | Light emitting display apparatus |
Applications Claiming Priority (1)
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JP2008174484A JP5511157B2 (ja) | 2008-07-03 | 2008-07-03 | 発光表示装置 |
Publications (3)
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JP2010014942A JP2010014942A (ja) | 2010-01-21 |
JP2010014942A5 JP2010014942A5 (ja) | 2011-08-18 |
JP5511157B2 true JP5511157B2 (ja) | 2014-06-04 |
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US (6) | US8592815B2 (ja) |
JP (1) | JP5511157B2 (ja) |
WO (1) | WO2010002029A1 (ja) |
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---|---|---|---|---|
JP5511157B2 (ja) * | 2008-07-03 | 2014-06-04 | キヤノン株式会社 | 発光表示装置 |
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