CN201112424Y - Organic white-light emitting device caused by electricity - Google Patents
Organic white-light emitting device caused by electricity Download PDFInfo
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- CN201112424Y CN201112424Y CNU2007201210816U CN200720121081U CN201112424Y CN 201112424 Y CN201112424 Y CN 201112424Y CN U2007201210816 U CNU2007201210816 U CN U2007201210816U CN 200720121081 U CN200720121081 U CN 200720121081U CN 201112424 Y CN201112424 Y CN 201112424Y
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- luminescent
- luminescent layer
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- white light
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- 230000005611 electricity Effects 0.000 title 1
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000002347 injection Methods 0.000 claims abstract description 9
- 239000007924 injection Substances 0.000 claims abstract description 9
- 238000005401 electroluminescence Methods 0.000 claims description 17
- 230000027756 respiratory electron transport chain Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000002156 mixing Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000005525 hole transport Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 8
- 239000000758 substrate Substances 0.000 description 6
- 238000007738 vacuum evaporation Methods 0.000 description 6
- 238000007641 inkjet printing Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000010405 anode material Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000005283 ground state Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920000553 poly(phenylenevinylene) Polymers 0.000 description 2
- 239000005725 8-Hydroxyquinoline Substances 0.000 description 1
- 229910001148 Al-Li alloy Inorganic materials 0.000 description 1
- 229910019015 Mg-Ag Inorganic materials 0.000 description 1
- 229910006404 SnO 2 Inorganic materials 0.000 description 1
- 239000007983 Tris buffer Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical compound O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229960003540 oxyquinoline Drugs 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- -1 poly (p-phenylene vinylene) Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- MCJGNVYPOGVAJF-UHFFFAOYSA-N quinolin-8-ol Chemical compound C1=CN=C2C(O)=CC=CC2=C1 MCJGNVYPOGVAJF-UHFFFAOYSA-N 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 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
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc oxide Inorganic materials [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
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Abstract
The utility model relates to the organic electroluminescent technology field, in particular to an organic electroluminescent device. The organic electroluminescent device includes an anodic electrode layer, a hole injection layer, a hole transport layer, a luminescent layer, an electron transport layer, an electron injection layer and a cathodic electrode layer which are superposed and compounded together. The luminescent layer is superposed and compounded by three layers including a first layer of the luminescent layer, a second layer of the luminescent layer, and a third layer of the luminescent layer; and different fluorescent materials are mixed into the three layers of the luminescent layer; after mixing the lights excited by the three layers of the luminescent layer, the whole organic luminescent layer can produce a white light. In the specific luminescent effect, the first and the third layers of the luminescent layer produce yellow lights, the second layer of the luminescent layer produces a blue light, and the whole device produce the white light.
Description
Technical field:
The utility model relates to technical field of organic electroluminescence, specifically, relates to a kind of organic electroluminescence device that emits white light.
Background technology:
Now, along with the arriving of Development of Multimedia Technology and information-intensive society, more and more higher to the performance requirement of flat-panel display device.Three kinds of Display Techniques have newly appearred in recent years: plasma display, Field Emission Display and display of organic electroluminescence (OLED).These three kinds of Display Techniques have all remedied the deficiency of cathode ray tube (CRT) and LCD (LCD) to a certain extent.Wherein, display of organic electroluminescence has from main light emission, and low-voltage DC driven, complete curings, wide visual angle, color such as enrich at series of advantages.Compare with LCD, display of organic electroluminescence does not need backlight, the visual angle is big, low in energy consumption, its response speed can reach LCD 1000 times, its manufacturing cost but is lower than the LCD of equal resolution.Therefore, display of organic electroluminescence has broad application prospects, and is counted as the utmost point and composes one of following flat panel display of competitiveness.
In the past ten years, OLED demonstrated in the Display Technique field can with the powerful competitiveness of liquid crystalline phase ratio.Since 1987 tris (8-hydroxyquinoline) aluminium (Alq3) and nineteen ninety since poly (p-phenylene vinylene) finds electroluminescence efficiently in (PPV), OLED becomes the most attracting Display Technique.It has that preparation is simple, response time weak point, high brightness, wide visual angle, low driving voltage, most possibly be applied on the flexible substrate and advantage such as full-color demonstration.For example be applied to the surface of plastics and paper, the display screen of preparing can be bent or roll.Different with liquid crystal is, OLED is self-luminous, need not backlightly, and it is thinner and lighter that this can accomplish the OLED display screen.
OLED is the multilayer film device, the basic principle of this device is: outside under the driven, enter luminescent layer through electron transfer layer and hole transmission layer respectively by electrode injected electrons and hole, compound and give off energy, and with the molecule of energy delivery to organic luminescent substance, it is excited, from the ground state transition to excitation state, excited molecule radiation transistion and produce luminescence phenomenon when excitation state is got back to ground state.The OLED device generally includes substrate, organic luminous layer and cover plate and forms.Below be exactly the manufacture method of present a kind of OLED:
At first at the upper surface coated anode material of substrate, thereby form anode.Described substrate can be the substrate that is used for traditional organic electroluminescence device, such as glass or plastics.Described substrate should be a waterproof, has smooth surface and also handles easily.Described anode material can be that high work function (greater than waiting 4.5eV) is transparent, high conductance metal, for example tin indium oxide (ITO), indium zinc oxide (IZO), SnO
2, ZnO etc.
Secondly, apply, invade stain coating, blade coating, ink jet printing or heat transmission by the vacuum evaporation rotation and form hole injection layer (HIL).Hole injection layer thickness is less than 150nm.When greater than 150nm the time, the driving voltage of organic electroluminescence device can increase.Hole injection layer can be made up of CuPc, Tc1103 (manufacturing of TTC company), but is not limited thereto.
Then, on hole injection layer or anode, form hole transmission layer (HTL) by vacuum evaporation, ink jet printing, laser transfer or photoetching process.The formation material can be but be not limited to NPB.Thickness of hole transport layer is that 5nm is to 150nm.When thickness of hole transport layer during less than 5nm, the hole transport feature can variation.When greater than 150nm, the driving voltage of organic electroluminescence device can increase.
Luminescent layer (EML) forms on hole transmission layer.Luminescent layer can form, but be not limited only to these methods by vacuum evaporation, ink jet printing.
The material of electron transfer layer can be coated in by vacuum evaporation or rotation and form electron transfer layer (ETL) on the luminescent layer.Electron transport material can be but be not limited to Alq
3Electron transfer layer is 5nm to 60nm.When electric transmission layer thickness during less than 5nm, organic electro-luminescence device lifetime can reduce.When electron transfer layer gross thickness during greater than 60nm, the organic electroluminescence device driving voltage can increase.
Electron injecting layer (EIL) can form on electron transfer layer by vacuum evaporation or other mode.Electron injecting layer can be by LiF, NaCl, CsF, Li
2Compositions such as O, BaO, Liq, but be not limited thereto.Electron injecting layer thickness is 0.1nm to 10nm.When electron injecting layer during less than 0.1nm, the electronics injectability of organic electroluminescence device can reduce.When electron injecting layer during greater than 10nm, electron transfer layer serves as insulator, has increased the driving voltage of organic electroluminescence device.
Cathodic metal can or sputter on the electron injecting layer by vacuum evaporation, thereby forms negative electrode.Cathodic metal can be Li, Mg, Al, Al-Li, Ca, Mg-In, Mg-Ag, Ag etc.
White luminous because of being one of important aspect that realizes the full color flat panel display, and people's attention extremely.OLED realizes how comparatively complicated the structure and the method that emit white light be at present, and efficient is not high.
The utility model content:
Technical problem to be solved in the utility model just provides a kind of organic electroluminescence device that emits white light.
For solving the problems of the technologies described above, the utility model has adopted following technical scheme: the organic luminous layer of this device comprises the anode electrode layer that stack successively is combined with each other, hole injection layer, hole transmission layer, luminescent layer, electron transfer layer, electron injecting layer, negative electrode layer, described luminescent layer was compounded to form by three stacked adding, comprise the ground floor luminescent layer, second layer luminescent layer, the 3rd layer of luminescent layer, and in these three layers of luminescent layers, sneak into different fluorescent materials respectively, three layers of light that luminescent layer excites produce white light through making whole organic luminous layer after mixing.
The utility model has adopted three layers of luminescent layer in organic luminous layer, mix different fluorescent materials respectively in these three layers of luminescent layers, like this when three layers of luminescent layer begin luminous after, issued light forms white light through mixing.In the concrete illumination effect, ground floor luminescent layer and the 3rd layer of luminescent layer light that all turns to be yellow, second layer luminescent layer blue light-emitting, entire device is sent white light.
Description of drawings
Fig. 1 is the structural representation of organic luminous layer in the utility model luminescent device.
Embodiment:
See Fig. 1, the utility model comprises: anode electrode layer 101, hole injection layer 102, hole transmission layer 103, luminescent layer, electron transfer layer 107, electron injecting layer 108, negative electrode layer 109 that stack is combined with each other.Described luminescent layer had three stacked adding to be compounded to form, comprise ground floor luminescent layer 104, second layer luminescent layer 105, the 3rd layer of luminescent layer 106, and in these three layers of luminescent layers, sneak into different fluorescent materials respectively, three layers of light that luminescent layer excites make whole organic luminous layer produce white light after mixing.Wherein, mix yellow fluorescent material in first luminescent layer 104 and the 3rd layer of luminescent layer 106, second layer luminescent layer 105 mixes blue fluorescent material.The light that three layers of luminescent layer sends has just formed white light after mixing.
The OLED that the utility model emits white light relatively at present, it is simple in structure, makes very convenient.
Claims (1)
1. organic electroluminescence device that emits white light, the organic luminous layer of this device comprises anode electrode layer (101), hole injection layer (102), hole transmission layer (103), luminescent layer, electron transfer layer (107), electron injecting layer (108), the negative electrode layer (109) that stack successively is combined with each other, it is characterized in that: described luminescent layer was compounded to form by three stacked adding, and comprised ground floor luminescent layer (104), second layer luminescent layer (105), the 3rd layer of luminescent layer (106) of sneaking into different fluorescent materials respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201210816U CN201112424Y (en) | 2007-06-27 | 2007-06-27 | Organic white-light emitting device caused by electricity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201210816U CN201112424Y (en) | 2007-06-27 | 2007-06-27 | Organic white-light emitting device caused by electricity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201112424Y true CN201112424Y (en) | 2008-09-10 |
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ID=39964171
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201210816U Expired - Fee Related CN201112424Y (en) | 2007-06-27 | 2007-06-27 | Organic white-light emitting device caused by electricity |
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| Country | Link |
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| CN (1) | CN201112424Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9455303B2 (en) | 2014-06-30 | 2016-09-27 | Shanghai Tianma AM-OLED Co., Ltd. | White organic light emitting device |
-
2007
- 2007-06-27 CN CNU2007201210816U patent/CN201112424Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9455303B2 (en) | 2014-06-30 | 2016-09-27 | Shanghai Tianma AM-OLED Co., Ltd. | White organic light emitting device |
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