CN202035172U - Single pixel three primary color mixing organic electroluminescent white light source possessing composite anode - Google Patents
Single pixel three primary color mixing organic electroluminescent white light source possessing composite anode Download PDFInfo
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- CN202035172U CN202035172U CN2010206744489U CN201020674448U CN202035172U CN 202035172 U CN202035172 U CN 202035172U CN 2010206744489 U CN2010206744489 U CN 2010206744489U CN 201020674448 U CN201020674448 U CN 201020674448U CN 202035172 U CN202035172 U CN 202035172U
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Abstract
The utility model relates to a single pixel three primary color mixing organic electroluminescent white light source possessing a composite anode. The white light source includes from bottom to top a transparent substrate, a composite anode, a hole injection layer, a hole transport layer, a luminescent layer, an electron transport layer, an electron injection layer, and a cathode. The composite anode includes an aluminium layer arranged on the transparent substrate and a molybdena layer arranged on the aluminium layer. The single pixel three primary color mixing organic electroluminescent white light source possessing the composite anode has the following advantages: 1. The luminescent property of a white light OLED manufactured by the composite anode made of the aluminium and the molybdena is excellent; 2. The material of the substrate has no special requirement, the performance is stable, and the application scope is wide.; 3. The price is low.
Description
[technical field]
The utility model includes the technical field of organic electro luminescent, particularly a kind of organic electroluminescent white light device with composite anode.
[background technology]
Organic electroluminescence device (OLED) is the light-emitting component of a kind of self-luminous, high brightness, panchromatic demonstration, in the flat panel display field tempting prospect is arranged.Wherein the OLED white light parts can be used as the background light source of display, also can be used as lighting source, and important application prospects is arranged, and is the emphasis R﹠D direction of each OLED manufacturer.The structure of OLED display device generally includes: transparent or semitransparent substrate, anode, hole injection layer, hole transmission layer, luminescent layer, electron transfer layer, electron injecting layer and negative electrode.For white light parts, can be divided into single pixel three primary colors mixed white light device and three pixel mixed white light devices, structural difference such as Fig. 2 and shown in Figure 3 from the angle of technology.The white light colour mixture scheme of three pixels is mainly used in the field of display, and the size of three pixels must be less than the distinguishable minimum zone of naked eyes, and very high to the requirement of machining accuracy usually at the hundreds of micron, cost is also than higher.And for the illumination or provide backlight these do not need the use field of pixelation, the scheme of single pixel three primary colors mixed white light is simpler, cost is also low.How the OLED that a kind of processing is easier, cost is cheaper white light backlight can be provided, make it successfully come into huge numbers of families, be the key subjects of present industrial circle.From each composition structure of OLED device, people have abundant achievement in research for hole transmission layer, luminescent layer, electron transfer layer and cathode material at present, and difficulty has breakthrough but anode still is confined to traditional ITO electro-conductive glass.Ito anode has some significant disadvantages:
1.ITO the price height of glass, the mineral reserve reserves of doped chemical indium wherein are low, and price has the trend that goes up year by year, makes the organic light-emitting device industrialization process restricted;
2.ITO must be the 300 ℃ of left and right sides film forming during forming sputtering film in order to access the high crystalline structure of comparison uniform outer surface pattern and conductivity, and keep a period of time to anneal, such process has than macrolesion the plastic of the flexibility of non-refractory, therefore the ITO electrode of flexible plastic substrates is big with glass substrate ITO difference on the electric charge injection efficiency, and price is very expensive, does not more possess practical value;
3. the ito glass of monoblock needs to come the metal oxide of antianode to carry out etching with strong acid in the process that forms pixel, complex process, destruction environment.
The research of people aspect the cheap of metal oxide anode in recent years is a lot, transparency electrodes such as zinc oxide, tin oxide have appearred, but can only be applied to the solar cell aspect at present,, can't replace traditional ito anode showing that the field with illumination is still very poor as anode performance.
At present, the prices of raw and semifnished materials are cheap, and the simple again anode of manufacture craft is directly to be plated in the anode that forms on the transparent or semitransparent substrate with metallic films such as aluminium, silver, copper.The contrast conventional anode, this class cheap metal anode has several tangible advantages:
1. metallic film has certain light transmittance in the thickness range of 10～50nm, can be used as transparent anode and uses;
2. metallic conductivity is good, and energy consumption is low;
3. the means of plating are a lot, can evaporation, sputter, chemical plating, select face width, and can form pixel with one step of method of evaporation+mask plate, needn't as ito anode, be etched into pixel with strong acid again;
4. cheap, cost has only 1/tens of ito anode, is fit to large-scale industrial production.
But the metal anode shortcoming also clearly, i.e. metal electrode injection electronics is easy to, but injected hole is relatively more difficult, comes the device luminescent properties of substitute I TO anode very poor with metallic film as anode separately, does not have practical value.Therefore, the metallic film anode is carried out modification, making it to become, to be easy to injected hole be a proposition highly significant.
Compound with organic hole injection material and metal anode is feasible means.Hole-injecting material commonly used comprises: arylamine type compound, CuPc complex, P type discotic compound, these several classes of Oligopoly thiophene.Practical effect from device, with the compound metal electrode of hole-injecting material, than simple metal anode to a certain degree improvement is arranged, but the energy level difference between metal and the hole-injecting material is still very big, energy level does not match, so compare bigger gap in addition with ito anode, can not replace ito anode.Therefore, find a kind of cheapness in the OLED field and well behaved anode remains stern challenge.
From OLED white light parts angle of practical application, the actual (real) thickness of OLED device has only 100～200 microns, well below fluorescent tube and LED lamp.OLED can't make continuous light-emitting area than LED is superior at LED simultaneously, can only form array by isolated one by one point-source of light, and display effect is coarse, and OLED is an area source truly, can show very exquisite fine and smooth picture.The internal quantum efficiency of OLED phosphorescence device can surpass 80% at present, and is suitable with the LED lamp.Though the absolute brightness of present stage OLED white light parts is no more than 50,000cd/m usually
2, also have big gap with the LED lamp, be no problem but satisfy the requirement that shows night.
The billboard that shows the night of usefulness all needs to do thick and heavy lamp box now, middle much fluorescent tubes that insert, and not only floor space is big, and can't move, and uses inconvenience.Just can realize the displaying of advertisement anywhere or anytime if use the backlight of the OLED diaphragm type that can curl.But because the OLED device uses ito anode, improved cost, the ito anode device brightness on the fexible film is low simultaneously, and unstable properties makes the OLED white light backlight can't replace traditional advertising lamp box.
Present road markings board all is to need extraneous light stamp the content that just can see sign, night car light if fault be can't see sign, cause danger easily.And if just can realize self-luminous with the OLED white light backlight, in the environment of dark, clearly illustrate its content, reduce hazards.But because the OLED cost than higher, also can't be realized self luminous Sign Board at present.
Electronic whiteboard all is a projection usually, needs projecting apparatus, and adjusts focal length, preheating is used very inconvenience, if just can not be subjected to the restriction of place and equipment with the flexible self-luminous OLED blank that can curl, even use out of doors, also there are not similar products at present.
In emergency circumstances the emergency light source of Shi Yonging is the important applied field of OLED product, because the starting voltage of OLED illumination has only 3～5 volts, uses common batteries just can throw light on.But emergency light source preferably can curl, and is easy to carry, and could real performance carry the function of Shi Yonging at any time, the present product that does not also have this respect.
The panel board that uses night, car plate, decorative lighting light source etc. though there are some OLED samples to release, are limited to cost, still can not use in a large number.
In a word, the application direction of OLED white-light illuminating is a lot of at present, if but cost is descended, and make flexible product, just can't form real product.
[utility model content]
The purpose of this utility model provides a kind of single pixel three primary colors with composite anode and mixes the organic electroluminescence white light source, to solve the problems of the technologies described above.
To achieve these goals, the utility model adopts following technical scheme:
A kind of single pixel three primary colors with composite anode are mixed the organic electroluminescence white light source, comprise successively from the bottom to top: transparency carrier, composite anode, hole injection layer, hole transmission layer, luminescent layer, electron transfer layer, electron injecting layer and negative electrode.
Described composite anode comprises aluminium lamination that is arranged on the described transparency carrier and the molybdenum oxide layer that is arranged on the aluminium lamination.
The thickness of described aluminium lamination is 1～100nm; The thickness of described molybdenum oxide layer is 0.3～200nm.
Described transparency carrier is glass, plastic film or metallic film.
Compared with prior art, the utlity model has following advantage:
1, the white light OLED device of aluminium and molybdenum oxide composite anode making, luminescent properties is good;
2, not fastidious for substrate material, stable performance, widely applicable;
3, cheap.
If replacing IT0 electrode preparation white light parts just to possess with aluminium and molybdenum oxide composite anode reduces the cost of raw material and can prepare these two huge advantages of flexible light source.Really push OLED, frivolous night vision billboard, Sign Board, emergency light source, electronic whiteboard, panel board, car plate, decorative lighting light source to industrialization.
[description of drawings]
Fig. 1 is the basic structure sketch of single pixel white light emitting device, and wherein a is a transparency carrier; B is a composite anode; C is a hole injection layer; D is a hole transmission layer; E is a luminescent layer; F is an electron transfer layer; G is an electron injecting layer; H is a negative electrode;
Fig. 2 is the structural representation of single pixel three primary colors mixed white light device, and wherein e1 is a red light luminescent layer; E2 is the green luminescence layer; E3 is a blue light-emitting;
Fig. 3 is the structural representation of three pixel mixed white light devices;
Fig. 4 is the luminescent spectrum figure of the white organic light emitting diode of manufacturing among the embodiment 1,2;
Fig. 5 is the voltage-brightness relationship figure of the white organic light emitting diode of manufacturing in embodiment 1,2 and the Comparative Examples 1,2;
Fig. 6 is the luminescent spectrum figure of the white organic light emitting diode of manufacturing among the embodiment 3,4;
Fig. 7 is the voltage-brightness relationship figure of the white organic light emitting diode of manufacturing among the embodiment 3,4;
Fig. 8 is flexible each layer of OLED white light backlight relative position vertical view;
Fig. 9 is flexible each layer of OLED white light backlight relative position end view;
Figure 10 is the assembling process schematic diagram of the OLED billboard that can curl;
Figure 11 is the curling schematic diagram of taking in of flexible OLED billboard;
Figure 12 fits for multi-disc can prepare large area flexible white light backlight schematic diagram.
[embodiment]
Below in conjunction with accompanying drawing the utility model is done and to be described in further detail.
Embodiment 1
In alcohol solvent, the PET plastic film is cleaned with ultrasonic wave, use distilled water and alcohol flushing one time and dry then respectively.Transfer base substrate is to the vacuum thermal evaporation chamber.The multilayer anode 25nm of while heat sublimation AM aluminum metallization and molybdenum oxide on pet substrate, wherein the mol ratio of aluminium and molybdenum oxide is 3: 2; Heat sublimation evaporation molybdenum oxide 40nm respectively sequentially again on multilayer anode, NPD 40nm, FIrpic is entrained in blu-ray layer 6nm among the CBP, Ir (PPy) with 8% mol ratio
3Mol ratio with 6% is entrained in the green glow layer 15nm among the CBP, CBP: Ir (piq)
2(acac) be entrained in ruddiness layer 7nm among the CBP, TPBI30nm, LiF 1nm with 6% mol ratio; Heat sublimation AM aluminum metallization 100nm forms negative electrode on organic luminous layer at last.Deposition velocity remained on for 2 dust/seconds to organic material, and LiF was remained on for 1 dust/second, and aluminium was remained on for 5 dust/seconds.As shown in Figure 1, the device architecture that forms at last is as follows:
PET/Al: 3: 2 (25nm)/molybdenum oxide (40nm)/NPD (40nm)/CBP: FIrpic100 of molybdenum oxide: 8 (6nm)/CBP: Ir (PPy)
3100: 6 (15nm)/CBP: Ir (piq)
2(acac) 100: 6 (7nm)/TPBI (30nm)/LiF (1nm)/Al (100nm).
Comparative Examples 1
In alcohol solvent, dull and stereotyped ito glass substrate is cleaned with ultrasonic wave, use distilled water and alcohol flushing one time and dry then respectively.Transfer base substrate is to the vacuum thermal evaporation chamber.Heat sublimation evaporation molybdenum oxide 40nm respectively sequentially on ito glass substrate, NPD40nm, FIrpic is entrained in blu-ray layer 6nm among the CBP, Ir (PPy) with 8% mol ratio
3Mol ratio with 6% is entrained in the green glow layer 15nm among the CBP, CBP: Ir (piq)
2(acac) be entrained in ruddiness layer 7nm among the CBP, TPBI 30nm, LiF 1nm with 6% mol ratio; Heat sublimation AM aluminum metallization 100nm forms negative electrode on organic luminous layer at last.Deposition velocity remained on for 2 dust/seconds to organic material, and LiF was remained on for 1 dust/second, and aluminium was remained on for 5 dust/seconds, and the device architecture of Xing Chenging is as follows at last:
Glass/ITO/ molybdenum oxide (40nm)/NPD (40nm)/100: 8 (6nm)/CBP: Ir (PPy) of CBP: FIrpic
3100: 6 (15nm)/CBP: Ir (piq)
2(acac) 100: 6 (7nm)/TPBI (30nm)/LiF (1nm)/Al (100nm).
Embodiment 2
In alcohol solvent, the PET plastic film is cleaned with ultrasonic wave, use alcohol flushing one time and dry then.Transfer base substrate is to the vacuum thermal evaporation chamber.Distinguish heat sublimation AM aluminum metallization 15nm on the PET plastic film sequentially, molybdenum oxide 40nm forms composite anode; Heat sublimation evaporation NPD 40nm respectively sequentially again on composite anode, FIrpic is entrained in blu-ray layer 6nm among the CBP, Ir (PPy) with 8% mol ratio
3Mol ratio with 6% is entrained in the green glow layer 15nm among the CBP, CBP: Ir (piq)
2(acac) be entrained in ruddiness layer 7nm among the CBP, TPBI 30nm, LiF 1nm with 6% mol ratio; Last heat sublimation AM aluminum metallization 100nm forms negative electrode.Deposition velocity remained on for 2 dust/seconds to organic material, and LiF was remained on for 1 dust/second, and aluminium was remained on for 5 dust/seconds, and the device architecture of Xing Chenging is as follows at last:
PET/Al (15nm)/molybdenum oxide (40nm)/NPD (40nm)/100: 8 (6nm)/CBP: Ir (PPy) of CBP: FIrpic
3100: 6 (15nm)/CBP: Ir (piq)
2(acac) 100: 6 (7nm)/TPBI (30nm)/LiF (1nm)/Al (100nm).
Comparative Examples 2
In alcohol solvent, there is the PET plastic base of ito thin film to clean, uses alcohol flushing one time and dry then with ultrasonic wave to sputter.Transfer base substrate is to the vacuum thermal evaporation chamber.Heat sublimation evaporation NPD 40nm respectively sequentially on the ITO plastic film, FIrpic is entrained in blu-ray layer 6nm among the CBP, Ir (PPy) with 8% mol ratio
3Mol ratio with 6% is entrained in the green glow layer 15nm among the CBP, CBP: Ir (piq)
2(acac) be entrained in ruddiness layer 7nm among the CBP, TPBI 30nm, LiF 1nm with 6% mol ratio; Last heat sublimation AM aluminum metallization 100nm forms negative electrode.Deposition velocity remained on for 2 dust/seconds to organic material, and LiF was remained on for 1 dust/second, and aluminium was remained on for 5 dust/seconds, and the device architecture of Xing Chenging is as follows at last:
PET/ITO/NPD(40nm)/CBP∶FIrpic?100∶8(6nm)/CBP∶Ir(PPy)
3100∶6(15nm)/CBP∶Ir(piq)
2(acac)100∶6(7nm)/TPBI(30nm)/LiF(1nm)/Al(100nm)。
See also shown in Figure 4ly, be the luminescent spectrum of the prepared organic electroluminescence device that has composite anode of embodiment 1,2, no matter be aluminium and molybdenum oxide multilayer anode or independently two-layer separately composite anode can obtain good white-light spectrum as can be seen.
See also shown in Figure 5ly, be the voltage-brightness relationship figure of the prepared white organic light emitting diode of embodiment 1,2 and Comparative Examples 1,2.Comparative example 1 and Comparative Examples 1 compare with the ITO of glass surface, and the blend anode of aluminium and molybdenum oxide is higher than ito glass in the above brightness amplification of 8V, and brightness has surmounted general ito glass when 9.5V.On the whole, both performances are suitable, and the blend anode cost of aluminium and molybdenum oxide is less than 1/5th of ITO, and this anode is made in frosting, are the white light parts that can curl.Comparative example 2 and Comparative Examples 2, surface at flexiplast, the device of making of ITO does not almost work, illustrate that ITO requires very high for accompanying substrate own, flexible ito substrate can't be applicable to well that at present OLED shows and illumination, and the blend anode of aluminium and molybdenum oxide still can be stably luminous on plastic film, illustrates that aluminium is fine to different substrate adaptability with the blend anode of molybdenum oxide.
In alcohol solvent, the PET plastic film is cleaned with ultrasonic wave, use alcohol flushing one time and dry then.Transfer base substrate is to the vacuum thermal evaporation chamber.Distinguish heat sublimation AM aluminum metallization, tin hybrid metal 15nm on the PET plastic film sequentially, wherein the mol ratio of aluminium and tin is 9: 1, and molybdenum oxide 40nm forms composite anode; On composite anode, distinguish heat sublimation evaporation NPD 40nm, DPVBi blu-ray layer 4nm, AlQ more sequentially
3Green glow layer 6nm, DCJTB is entrained in AlQ with 2% mol ratio
3In ruddiness layer 7nm, TPBI10nm, AlQ
335nm, LiF 1nm; Last heat sublimation AM aluminum metallization 100nm forms negative electrode.Deposition velocity remained on for 2 dust/seconds to organic material, and LiF was remained on for 1 dust/second, and aluminium was remained on for 5 dust/seconds, and the device architecture of Xing Chenging is as follows at last:
9: 1 (15nm)/molybdenum oxide (40nm)/NPD (40nm)/DPVBi (4nm)/AlQ of PET/Al: Sn
3(6nm)/AlQ
3: DCJTB100: 2 (7nm)/TPBI (10nm)/AlQ
3(35nm)/LiF (1nm)/Al (100nm).
In containing the aqueous solution of stain remover, flat glass substrate is cleaned with ultrasonic wave, use distilled water and alcohol flushing one time and dry then respectively.Transfer base substrate is to the vacuum thermal evaporation chamber.On glass substrate, distinguish heat sublimation evaporation chromium 10nm sequentially, aluminium 15nm, molybdenum oxide and tungsten oxide mixture 40nm, wherein molybdenum oxide and tungsten oxide mol ratio are 9: 1, form opaque composite anode; On composite anode, distinguish heat sublimation evaporation NPD 40nm, DPVBi blu-ray layer 4nm, AlQ more sequentially
3Green glow layer 6nm, DCJTB is entrained in AlQ with 2% mol ratio
3In ruddiness layer 7nm, TPBI 10nm, AlQ
335nm, LiF1nm; Last heat sublimation AM aluminum metallization 15nm forms transparent cathode, is prepared into the cathodoluminescence device.Deposition velocity remained on for 2 dust/seconds to organic material, and LiF was remained on for 1 dust/second, and aluminium was remained on for 5 dust/seconds, and the device architecture of Xing Chenging is as follows at last:
Glass/Cr (10nm)/Al (15nm)/molybdenum oxide: 9: 1 (40nm)/NPD (40nm)/DPVBi (4nm)/AlQ of tungsten oxide
3(6nm)/AlQ
3: 100: 2 (7nm)/TPBI (10nm)/AlQ of DCJTB
3(35nm)/and LiF (1nm)/Al (15nm), device is ingress of air not, tests but directly be transferred in the glove box that is full of high-purity argon gas, and the voltage-brightness relationship of this white organic light emitting diode is as shown in Figure 7.
See also shown in Figure 6ly, the luminescent spectrum for the white organic light emitting diode of manufacturing among the embodiment 3,4 mixes other metals as can be seen in the aluminium, perhaps sneak into other hole-injecting materials and all can obtain good white-light spectrum in molybdenum oxide.
See also shown in Figure 7ly, be the voltage-brightness relationship figure of the white organic light emitting diode of manufacturing among the embodiment 3,4.The composite anode of embodiment 3 and 4 explanation aluminium and molybdenum oxides not only is applicable to the phosphorescence white light parts but also is equally applicable to the fluorescence white light parts, and though emission mode be anode light or cathodoluminescence can.In addition, the hole mobile material and the metal of blending slightly some other can be finely tuned device performance, have good industrialization prospect.
Experimentation is identical with embodiment 2, changes the thickness of molybdenum oxide layer, forms the device of following structure:
PET/Al (15nm)/molybdenum oxide (60nm)/NPD (40nm)/100: 8 (6nm)/CBP: Ir (PPy) of CBP: FIrpic
3100: 6 (15nm)/CBP: Ir (piq)
2(acac) 100: 6 (7nm)/TPBI (30nm)/LiF (1nm)/Al (100nm).
Experimentation is identical with embodiment 2, changes the thickness of molybdenum oxide layer, forms the device of following structure:
PET/Al (15nm)/molybdenum oxide (100nm)/NPD (40nm)/100: 8 (6nm)/CBP: Ir (PPy) of CBP: FIrpic
3100: 6 (15nm)/CBP: Ir (piq)
2(acac) 100: 6 (7nm)/TPBI (30nm)/LiF (1nm)/Al (100nm).
Experimentation is identical with embodiment 2, changes the thickness of molybdenum oxide layer, forms the device of following structure:
PET/Al (15nm)/molybdenum oxide (200nm)/NPD (40nm)/100: 8 (6nm)/CBP: Ir (PPy) of CBP: FIrpic
3100: 6 (15nm)/CBP: Ir (piq)
2(acac) 100: 6 (7nm)/TPBI (30nm)/LiF (1nm)/Al (100nm).
Experimentation is identical with embodiment 4, changes the thickness of aluminium lamination, forms the device of following structure:
Glass/Cr (10nm)/Al (60nm)/molybdenum oxide: 9: 1 (40nm)/NPD (40nm)/DPVBi (4nm)/AlQ of tungsten oxide
3(6nm)/AlQ
3: 100: 2 (7nm)/TPBI (10nm)/AlQ of DCJTB
3(35nm)/LiF (1nm)/Al (15nm)
Experimentation is identical with embodiment 4, changes the thickness of aluminium lamination, forms the device of following structure:
Glass/Cr (10nm)/Al (100nm)/molybdenum oxide: 9: 1 (40nm)/NPD (40nm)/DPVBi (4nm)/AlQ of tungsten oxide
3(6nm)/AlQ
3: 100: 2 (7nm)/TPBI (10nm)/AlQ of DCJTB
3(35nm)/LiF (1nm)/Al (15nm)
See also table 1, be the brightness of embodiment 5～9 under 9V voltage.When the thickness of anode and hole injection layer within the specific limits, device can be lighted, and has use value.
The brightness of table 1. embodiment 5～9 under 9V voltage
| |
5 | 6 | 7 | 8 | 9 |
| Brightness (cd/m 2) | 1993 | 1547 | 682 | 941 | 629 |
The present LCD and the brightness of television set are at 150～200cd/m
2, the backlight illumination of panel board is also at 150～200cd/m
2, the backlight illumination of the electronic whiteboard of night vision, billboard, car plate, self-luminous Sign Board is no more than 500cd/m
2, the brightness of emergency light source, ornamental light source is no more than 1000cd/m
2The foregoing description all can satisfy the requirement in the brightness.In the area of 10cm * 10cm, the luminance difference at central point and edge is lower than 7% with the white light parts of aluminium/molybdenum oxide composite anode preparation, and the white light parts of ito glass is in the area of 10cm * 10cm, and the luminance difference at central point and edge is above 30%.Therefore, the white light parts with aluminium/molybdenum oxide composite anode preparation has reached the parameter index that carries out practical application in occasions such as self luminous billboard, Sign Board, emergency light source, electronic whiteboard, panel board, car plate, decorative lightings.To introduce as OLED white light parts how with embodiment below and prepare billboard, Sign Board, emergency light source, electronic whiteboard, panel board, car plate.
The preparation technology of white light parts is according to embodiment 1; the wherein relative position distribution of each layer such as Fig. 8 and shown in Figure 9; for protection device is not subjected to the extraneous aqueous vapor and the erosion of oxygen; can be at device both sides evaporation or sputter inorganic ceramic material; as: silica, silicon nitride, zinc oxide, diamond like carbon film are to intercept extraneous gas, and thickness is in 30～200 nanometers.The plastic film upper and lower side can paste spool so that the usefulness of curl gathering and suspension.The left and right sides reserves negative electrode and anode connects the position of lead-in wire and picks out lead-in wire with conductive silver glue or conductive tape.Lead-in wire connected with the mains just becomes the flexible white light backlight.General plastic film advertising lamp box pictorial poster or the plastic film that is printed on map are sticked on the white light backlight exiting surface with two-sided tape, flexible billboard or night vision map have just been made, can be suspended on the occasion that needs, can draw in when move and deposit, as shown in Figure 10 and Figure 11.
The preparation technology of white light backlight sticks the translucent plastics film that prints traffic mark according to embodiment 5 at its exiting surface, has just made self-luminous traffic mark board.
Embodiment 12
The preparation technology of white light backlight sticks the translucent plastics film that prints license plate number according to embodiment 5 at its exiting surface, has just made the self-luminous car plate.
Embodiment 13
The preparation technology of white light backlight is according to embodiment 5, sticks the sign that in case of emergency uses that prints or the translucent plastics film of symbol at its exiting surface, just made flexible emergency light source.
Embodiment 14
The preparation technology of white light backlight sticks transparent or semitransparent plastic film according to embodiment 5 at its exiting surface, can write on plastic film and wiping with the blank pen, has just made the flexible electronic blank.When a backlight area is big inadequately, can piece together the polylith backlight is stacked, form large-area electronic whiteboard, as shown in figure 12.
Embodiment 15
The preparation technology of white light backlight sticks the translucent plastics film that prints scale according to embodiment 5 at its exiting surface, and with its pointer rear that is attached to panel board, has just made self luminous night vision device dial plate.
At the weakness of existing independent metal anode, we are through a large amount of contrast experiments, and the laminated film of finding aluminium and molybdenum oxide is as anode, function admirable.This composite anode just aluminium and molybdenum oxide mate with the energy level of eigenstate separately, but formed new alloy at boundary layer, be defined as Mo
xAl
yO
3, wherein the x scope is 0.01～1.2, the y scope is 0.001～2, Al embeds the molybdenum oxide lattice with the form with active valence electron, and such alloy loses electronics easily, becomes the positive charge form, be the oxide semiconductor that a kind of P type mixes, the cavity transmission ability of this composite anode is higher than MoO
3Itself, common MoO
3Be no more than 5nm as hole injection layer thickness, above resistance is obviously risen, starting voltage improves, but Mo
xAl
yO
3Thickness at 120nm still has good hole injectability, and starting resistor is constant, and can intactly cover the surface that rises and falls effectively, has overcome dust and small foreign body attached to opening circuit or short circuit phenomenon that the surface produces.This composite anode is in boundary layer, combines the superior electrical conductivity of aluminium, becomes the good transparent anode of a kind of combination property.Because the resistance of aluminium is well below ITO, so the edge from anode when electric current passes through is very little to the centre voltage drop, whole light-emitting area brightness is very even, and the ITO electrode is owing to be semiconductor, resistance ratio is bigger, anodes centre's site voltage loss obviously, and is dark in the middle of can causing, the inhomogeneous effect that the edge is bright.Therefore, the composite anode of aluminium and molybdenum oxide is specially adapted to single pixel, large-area lighting source.In addition,, make this composite anode can adapt to the plastics flexible base, board well, can when crooked deformation, not rupture special advantages is arranged at aspects such as flexible light source, Electronic Paper or e-book because the cold draw of aluminium is good.
In the composite anode of aluminium and molybdenum oxide, except independent use molybdenum oxide as the hole-injecting material, also can mix use with the hole-injecting material of other types, when it uses with other materials, molybdenum oxide can be with amount and the metal oxide of 1 weight %～100 weight %, arylamine type compound, the CuPc complex, these several classes of Oligopoly thiophene hole-injecting material commonly used mixes use, when different hole-injecting materials mixes with molybdenum oxide, can control the injection rate in hole according to mixed proportion, adjust the hole injection rate of suitable certain device, preferably 30 weight %～100 weight %, more preferably 70 weight %～100 weight %.Similarly, aluminium also can use with the metal mixed of other types, be used for regulating the conductivity of metal and the scattered power of rete, aluminium can mix with the metal material that alkali metal, alkaline-earth metal, the 3rd main group metal, transition metal gold, rare earth metal, these several classes of noble metal are used always with the amount of 1 weight %～100 weight % in hybrid metal, preferably 30 weight %～100 weight %, more preferably 70 weight %～100 weight %.
In composite membrane, aluminium is main light scattering medium, can control light emission rate by the content of regulating aluminium, when luminescent device needs anode opaque and can to increase the content of the thickness of anode or aluminium in negative electrode one side bright dipping the time light tight by anode, the thickness of while attenuate cathodic metal, it is transparent or semitransparent that negative electrode is become, and forms the cathode emission device.The preferred thickness of anode is 3～150nm.
Claims (4)
1. the single pixel three primary colors with composite anode are mixed the organic electroluminescence white light source, it is characterized in that: comprise successively from the bottom to top: transparency carrier (a), composite anode (b), hole injection layer (c), hole transmission layer (d), luminescent layer (e), electron transfer layer (f), electron injecting layer (g) and negative electrode (h).
2. a kind of according to claim 1 single pixel three primary colors with composite anode are mixed the organic electroluminescence white light source, it is characterized in that: described composite anode (b) comprises aluminium lamination that is arranged on the described transparency carrier (a) and the molybdenum oxide layer that is arranged on the aluminium lamination.
3. mix the organic electroluminescence white light source as a kind of single pixel three primary colors with composite anode as described in the claim 2, it is characterized in that: the thickness of described aluminium lamination is 1～100nm; The thickness of described molybdenum oxide layer is 0.3～200nm.
4. as a kind of organic electroluminescence device with composite anode as described in each in the claim 1 to 3, it is characterized in that: described transparency carrier (a) is glass, plastic film or metallic film.
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| CN103165827A (en) * | 2011-12-19 | 2013-06-19 | 西安文景光电科技有限公司 | Organic electroluminescent diode device and display device thereof |
| CN103296217A (en) * | 2012-02-29 | 2013-09-11 | 海洋王照明科技股份有限公司 | Organic electroluminescence device and preparing method thereof |
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- 2010-12-22 CN CN2010206744489U patent/CN202035172U/en not_active Expired - Fee Related
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| CN103151468A (en) * | 2013-03-07 | 2013-06-12 | 深圳市华星光电技术有限公司 | Diode, manufacturing method thereof and display device |
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