CN103346164A - Organic light-emitting device with adjustable color and manufacturing method thereof - Google Patents

Organic light-emitting device with adjustable color and manufacturing method thereof Download PDF

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CN103346164A
CN103346164A CN2013102931319A CN201310293131A CN103346164A CN 103346164 A CN103346164 A CN 103346164A CN 2013102931319 A CN2013102931319 A CN 2013102931319A CN 201310293131 A CN201310293131 A CN 201310293131A CN 103346164 A CN103346164 A CN 103346164A
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electrode
coloured light
light unit
organic electroluminescence
unit
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CN103346164B (en
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邹建华
苏跃举
徐苗
陶洪
王磊
彭俊彪
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广州新视界光电科技有限公司
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Abstract

Provided are an organic light-emitting device with an adjustable color and a manufacturing method of the organic light-emitting device with the adjustable color. A substrate, a first coloured light unit and a second coloured light unit are arranged on the device, wherein the first coloured light unit and the second coloured light are arranged on the upper surface and the lower surface of the substrate respectively. The first coloured light unit is provided with a first bottom electrode, a first organic emission unit and a first top electrode. The second coloured light unit is provided with a second bottom electrode, a second organic emission unit and a second top electrode. A voltage V1 is additionally arranged between the first bottom electrode and the first top electrode, and a voltage V2 is additionally arranged between the second bottom electrode and the second top electrode. The emission spectrum of the first coloured light unit is adjusted by adjusting the value of the voltage V1, the emission spectrum of the second coloured light unit is adjusted by adjusting the value of the voltage V2, and the emission spectrum of the first coloured light unit and the emission spectrum of the second coloured light unit are overlapped to form an integral light-emitting color. The manufacturing method of the device comprises the step of manufacturing the first coloured light unit and the second coloured light unit on the two sides of the substrate respectively. According to the organic light-emitting device with the adjustable color and the manufacturing method of the device, color adjustment can be carried out on a manufactured device.

Description

Organic electroluminescence device of a kind of color tunable and preparation method thereof

Technical field

The present invention relates to technical field of semiconductors, relate in particular to organic electroluminescence device of a kind of color tunable and preparation method thereof.

Background technology

Organic electroluminescence device (OLED) is the membrane structure that forms at substrate, generally includes anode, negative electrode and is clipped in two interelectrode organic electroluminescence cells.Under external voltage drove, hole and electronics injected to organic semiconductor from anode and negative electrode respectively, arrived luminescent layer through transmission, and then formed the exciton radioluminescence at luminescent material.The organic material electroluminescence have color tunable, active illuminating, high brightness, high efficiency, wide visual angle, low power consuming, preparation technology simple, can prepare a series of excellent specific properties such as crooked flexible display screen, bring new developing direction for demonstration and lighting field, become the emphasis of research and industrialization.

Usually, the many structures by chemical method adjustment organic material of the color of organic electroluminescence device realize that different colours is luminous.For example two (4,6-difluorophenyl pyridine-N, C2) the pyridine formyl closes iridium (Firpic) emission blue light, three (2-phenylpyridines) close iridium (Ir (ppy) 3) transmitting green light, three (1-phenyl-isoquinolin) close iridium (III) (Ir (piq) 3) red-emitting.In addition, can realize that glow color is adjustable by the doping ratio that physical method is regulated object luminescent material in the luminescent layer.Chinese patent application 201110236869.2 discloses: two by regulating (4,6-difluorophenyl pyridine-N, C2) the pyridine formyl closes the mixing quality ratio of iridium and polyvinylcarbazole, realizes luminous from blue light to green-yellow light.Realize the adjusting of device glow color by the concentration of regulating organic electronic transferring material in the luminescent layer in the Chinese patent 200910067007.4, realize that glow color is luminous from blue light to blue-green.More than these two kinds regulate molecular structure and physical vapor deposition blend by chemical synthesis and change the doping content mode and regulate glow color, have complex process, the cost problem of higher.In addition, this dual mode realizes that different colours is luminous, all needs to prepare different organic electroluminescence devices, in case and the organic electroluminescence device preparation is finished, color can not be transferred again.

Therefore, at the prior art deficiency, the organic electroluminescence device that color adaptation still can be provided after providing a kind of preparation to finish as required flexibly is very necessary.

Summary of the invention

One of purpose of the present invention provides a kind of organic electroluminescence device of color tunable, and this device can the flexible glow color.

Above-mentioned purpose of the present invention realizes by following technological means.

A kind of organic electroluminescence device of color tunable is provided with substrate, is arranged at the first coloured light unit and the second coloured light unit of substrate upper and lower surface respectively;

The described first coloured light unit is provided with first hearth electrode, the first organic electroluminescence transmitter unit and first top electrode;

The described second coloured light unit is provided with second hearth electrode, the second organic electroluminescence transmitter unit and second top electrode;

Described first top electrode, the first organic electroluminescence transmitter unit, first hearth electrode, substrate, second hearth electrode, the second organic electroluminescence reflector element and second top electrode are folded successively according to order from top to down and are established;

Be equipped with voltage V1 between described first hearth electrode and described first top electrode, add voltage V2 between described second hearth electrode and described second top electrode; By the emission spectrum of the regulation voltage V1 value adjusting first coloured light unit, by the emission spectrum of the regulation voltage V2 value adjusting second coloured light unit, the emission spectrum stack of the emission spectrum of the first coloured light unit and the second coloured light unit forms whole glow color.

Above-mentioned voltage V1 is adjustable in 0 ~ 30V scope, and described voltage V2 is adjustable in 0 ~ 30V scope.

The voltage of above-mentioned voltage V1, described voltage V2 can be distinguished adjusting separately.

The coloured light unit that the above-mentioned first coloured light unit and the described second coloured light unit are different colours spectrum.

The coloured light unit that the above-mentioned first coloured light unit and the described second coloured light unit are complementary color, the spectrum synthesize white light of the described first coloured light unit and the described second coloured light unit.

The above-mentioned first coloured light unit is the coloured light unit of gold-tinted chromatogram, and the described second coloured light unit is the coloured light unit of blue light chromatogram; Perhaps

The described first coloured light unit is the coloured light unit of blue light chromatogram, and the described second coloured light unit is the coloured light unit of gold-tinted chromatogram.

Serve as reasons independent gold-tinted material of the coloured light unit of above-mentioned gold-tinted chromatogram constitutes, perhaps for to be constituted by green light material and red light material.

Above-mentioned substrate is set to transparent substrates, is specially glass, polyesters compound or polyimides compounds;

Described first hearth electrode, described second hearth electrode are set to transparency conductive electrode or translucent conductive electrode;

Described first top electrode, described second top electrode are any one in transparency electrode, semitransparent electrode or the opaque reflective conductive electrode, and described first top electrode and described second top electrode are not opaque reflective conductive electrode simultaneously;

Described transparency electrode to the light transmittance of wave-length coverage 420-700nm greater than 50%;

Described semitransparent electrode to the light transmittance of wave-length coverage 420-700nm greater than 20%;

Described opaque reflective conductive electrode is 20%-100% at the reflectivity of visible region;

Described transparency conductive electrode is any one in metal oxide, conducting polymer, electrical-conductive nanometer silver or the conduction simple substance carbon;

Described metal oxide comprises tin indium oxide, zinc oxide, indium zinc oxide, gallium oxide zinc, indium oxide gallium, indium oxide gallium zinc;

Described conduction simple substance carbon class comprises carbon nano-tube, Graphene or conductive black;

Described opaque reflective conductive electrode is set to aluminium, silver, chromium, copper or molybdenum electrode.

Another object of the present invention provides a kind of preparation method of organic electroluminescence device of color tunable, and prepared organic electroluminescence device is the flexible glow color as required.

Above-mentioned purpose of the present invention realizes by following technological means:

A kind of preparation method who prepares the organic electroluminescence device of above-mentioned color tunable is to prepare the first coloured light unit and the second coloured light unit respectively in the substrate both sides.

Specifically comprise,

Prepare first hearth electrode and second hearth electrode respectively in the both sides of substrate, then

At the first hearth electrode surface preparation, the first organic electroluminescence transmitter unit and first top electrode, at the second hearth electrode surface preparation, the second organic electroluminescence transmitter unit and second top electrode.

The organic electroluminescence device of color tunable of the present invention is provided with substrate, is arranged at the first coloured light unit and the second coloured light unit of substrate upper and lower surface respectively; The described first coloured light unit is provided with first hearth electrode, the first organic electroluminescence transmitter unit and first top electrode; The described second coloured light unit is provided with second hearth electrode, the second organic electroluminescence transmitter unit and second top electrode; Described first top electrode, the first organic electroluminescence transmitter unit, first hearth electrode, substrate, second hearth electrode, the second organic electroluminescence reflector element and second top electrode are folded successively according to order from top to down and are established; Be equipped with voltage V1 between described first hearth electrode and described first top electrode, add voltage V2 between described second hearth electrode and described second top electrode; By the emission spectrum of the regulation voltage V1 value adjusting first coloured light unit, by the emission spectrum of the regulation voltage V2 value adjusting second coloured light unit, the emission spectrum stack of the emission spectrum of the first coloured light unit and the second coloured light unit forms whole glow color.This organic electroluminescence device can pass through the voltage of the coloured light unit of the different glow colors in adjusting transparent substrates both sides, obtains the spectrum of different luminous intensities, by the spectrum stack, obtains the light of different colours, and realization is to the adjusting of glow color.Device of the present invention can carry out color adaptation to preparing device, has to regulate flexible characteristics, characteristic of strong applicability.

The preparation method of the organic electroluminescence device of a kind of color tunable of the present invention is to prepare the first coloured light unit and the second coloured light unit respectively in the substrate both sides.Prepared organic electroluminescence devices can be passed through the voltage of the coloured light unit of the different glow colors in adjusting transparent substrates both sides, obtains the spectrum of different luminous intensities, by the spectrum stack, obtains the light of different colours, and realization is to the adjusting of glow color.It is simple to have preparation technology, easily characteristics.

Description of drawings

The present invention is further illustrated to utilize accompanying drawing, but the content in the accompanying drawing does not constitute any limitation of the invention.

Fig. 1 is the structural representation of the organic electroluminescence device of a kind of color tunable of the present invention.

Fig. 2 is the spectrogram of the device of the embodiment of the invention 2.

Fig. 3 is the spectrogram of the device of the embodiment of the invention 3.

In Fig. 1, comprising:

Substrate 100,

The first coloured light unit 200,

First hearth electrode 210, the first organic electroluminescence transmitter unit 220, first top electrode 230,

The second coloured light unit 300,

Second hearth electrode 310, the second organic electroluminescence transmitter unit 320, second top electrode 330.

Embodiment

With the following Examples the present invention is further described.

Embodiment 1.

A kind of organic electroluminescence device of color tunable as shown in Figure 1, is provided with substrate 100, is arranged at the first coloured light unit 200 and the second coloured light unit 300 of substrate 100 upper and lower surfaces respectively.Need to prove that the upper-lower position in this example describes with respect to accompanying drawing, can carry out conversion to the position according to personal habits in the reality.

The first coloured light unit 200 is provided with first hearth electrode 210, the first organic electroluminescence transmitter unit 220 and first top electrode 230.

The second coloured light unit 300 is provided with second hearth electrode 310, the second organic electroluminescence transmitter unit 320 and second top electrode 330.

As general knowledge known in this field, the first organic electroluminescence transmitter unit 220 comprises hole injection layer, hole transmission layer, luminescent layer, electron transfer layer and electron injecting layer.Its principle is that hole and electronics inject to organic semiconductor from anode and negative electrode respectively under external voltage drives, and arrives luminescent layer through transmission, and then forms the exciton radioluminescence at luminescent material.

First top electrode 230, the first organic electroluminescence transmitter unit 220, first hearth electrode 210, substrate 100, second hearth electrode 310, the second organic electroluminescence reflector element 320 and second top electrode 330 are folded successively according to order from top to down and are established.Need to prove, as the common practise of this area, organic electroluminescence device is the membrane structure that forms at substrate, and each functional layer arranges by methods such as sputter or deposition or coating lamination successively, so be mutually permanently connected between each functional layer, do not repeat them here.

Be equipped with voltage V1 between first hearth electrode 210 and first top electrode 230, add voltage V2 between second hearth electrode 310 and second top electrode 330.Regulate the emission spectrum of the first coloured light unit 200 by regulation voltage V1 value, by the emission spectrum of the regulation voltage V2 value adjusting second coloured light unit 300, the emission spectrum stack of the emission spectrum of the first coloured light unit 200 and the second coloured light unit 300 forms whole glow color.

This organic electroluminescence device can pass through the voltage of the coloured light unit of the different glow colors in adjusting transparent substrates 100 both sides, obtains the spectrum of different luminous intensities, by the spectrum stack, obtains the light of different colours, and realization is to the adjusting of glow color.Device of the present invention can carry out color adaptation to preparing device, has to regulate flexible characteristics, and applicability is strong.

Concrete, voltage V1 is adjustable in 0 ~ 30V scope, and voltage V2 is adjustable in 0 ~ 30V scope.The voltage of voltage V1, described voltage V2 can be distinguished adjusting separately, has characteristics easy to adjust.

The first coloured light unit 200 and the second coloured light unit 300 can be set to the coloured light unit of different colours spectrum, in order to transfer the stack back to form the spectrum of the color that needs.

The first coloured light unit 200 and the second coloured light unit 300 also can be set to the coloured light unit of complementary color, so that can be by the spectrum synthesize white light of the first coloured light unit 200 and the second coloured light unit 300.

Concrete, the first coloured light unit 200 is the coloured light unit of gold-tinted chromatogram, the second coloured light unit 300 is the coloured light unit of blue light chromatogram; Perhaps the first coloured light unit 200 is the coloured light unit of blue light chromatogram, and the second coloured light unit 300 is the coloured light unit of gold-tinted chromatogram, can synthesize white light by yellow spectrum and blue spectrum.

Wherein, serve as reasons independent gold-tinted material of the coloured light unit of gold-tinted chromatogram constitutes, perhaps for to be constituted by green light material and red light material.

Need to prove that the luminescent material of the first coloured light unit 200 and the second coloured light unit 300 can be selected as required flexibly, is not limited to the situation that present embodiment is enumerated.

In order to realize good translucent effect, substrate 100 is set to transparent substrates 100, is specifically as follows glass, polyesters compound or polyimides compounds.

First hearth electrode 210, second hearth electrode 310 are set to transparency conductive electrode or translucent conductive electrode.First top electrode 230, second top electrode 330 can be in transparency electrode, semitransparent electrode or the opaque reflective conductive electrode any one, and first top electrode 230 and second top electrode 330 are not opaque reflective conductive electrode simultaneously.

Transparency electrode to the light transmittance of wave-length coverage 420-700nm greater than 50%, semitransparent electrode to the light transmittance of wave-length coverage 420-700nm greater than 20%; Opaque reflective conductive electrode is 20%-100% at the reflectivity of visible region, and effect is preferable.

Transparency conductive electrode is any one in metal oxide, conducting polymer, electrical-conductive nanometer silver or the conduction simple substance carbon.

Metal oxide comprises tin indium oxide, zinc oxide, indium zinc oxide, gallium oxide zinc, indium oxide gallium, indium oxide gallium zinc etc.

Conduction simple substance carbon class comprises carbon nano-tube, Graphene or conductive black etc.

Opaque reflective conductive electrode is set to aluminium, silver, chromium, copper or molybdenum electrode etc.

Organic electroluminescence device of the present invention can pass through the voltage of the coloured light unit of the different glow colors in adjusting transparent substrates 100 both sides, obtains the spectrum of different luminous intensities, by the spectrum stack, obtains the light of different colours, and realization is to the adjusting of glow color.The more important thing is that device of the present invention can carry out color adaptation to preparing device, have and regulate flexible characteristics that applicability is strong.

Its preparation process of the organic electroluminescence device of color tunable of the present invention is such, prepares the first coloured light unit 200 and the second coloured light unit 300 respectively in substrate 100 both sides.Concrete preparation method can prepare the first coloured light unit 200 in substrate 100 one sides earlier, namely prepare first hearth electrode 210, the first organic electroluminescence transmitter unit 220 and first top electrode 230 successively, and then prepare the second coloured light unit 300 at substrate 100 another sides, namely prepare second hearth electrode 310, the second organic electroluminescence transmitter unit 320 and second top electrode 330 successively.Add between electrode again that at last voltage gets final product.

Need to prove, the preparation order can not be subject to the above restrictions, also prepare first hearth electrode 210 and second hearth electrode 310 respectively in the both sides of substrate 100, then at first hearth electrode 210 surface preparation, the first organic electroluminescence transmitter unit 220 and first top electrode 230, at second hearth electrode 310 surface preparation, the second organic electroluminescence transmitter unit and second top electrode 330.Add between electrode again that at last voltage gets final product.

Need to prove that the preparation order of the first coloured light unit 200 and the second coloured light unit 300 can be changed.

Preparation method of the present invention is to prepare the first coloured light unit 200 and the second coloured light unit 300 respectively in substrate 100 both sides.Prepared organic electroluminescence devices can be passed through the voltage of the coloured light unit of the different glow colors in adjusting transparent substrates 100 both sides, obtains the spectrum of different luminous intensities, by the spectrum stack, obtains the light of different colours, and realization is to the adjusting of glow color.It is simple to have preparation technology, easily characteristics.

Embodiment 2.

Further the organic electroluminescence device of color tunable of the present invention is described below in conjunction with the detailed experiments example.

At first employed material is described:

LiF: lithium fluoride;

Bebq 2: two (10-hydroxy benzo quinoline) beryllium;

Ir (MDQ) 2(acac): (acetylacetone,2,4-pentanedione) two (the 2-methyldiphenyl is [F, H] quinoxalines also) close iridium;

NPB:(N, N'-diphenyl-N, N'-(1-naphthyl)-1,1'-biphenyl-4,4'-diamines);

ITO: tin indium oxide;

TAPC: two [4-(N, N-xylyl-amino) phenyl] cyclohexane;

Bepp 2: two (2-(2-phenolic group) pyridine) beryllium;

Ir (ppy) 3: three (2-phenylpyridines) close iridium;

CBP:4,4 '-N, N-two carbazoles-biphenyl;

(MPPZ) 2Ir (acac): pyrimidine complex of iridium two (2-phenyl pyrimidine) acetylacetone,2,4-pentanedione iridium;

The MADN:3-tert-butyl group-910-two 2-naphthalene anthracenes;

DSA-ph:4-di-[4-(N, N-diphenyl) aMino] styryl-benzene biconjugate (4-N, N-diphenylamino styrene);

ITO: tin indium oxide.

Adopt following technology to prepare the organic electroluminescence device of a color tunable, at first commercial glass is sent into vacuum evaporation equipment after by patterning, cleaning, oven dry; Adopt the vacuum heat deposition method to prepare each functional layer afterwards; Evaporation rate, doping content and actual (real) thickness are controlled in real time by film thickness monitor; Use KEITHLEY2400 and photometer to estimate device EL performance.

1. upper surface and the lower surface in glass substrate prepares ito thin film respectively.

2. prepare 200 NPB film, the doping 10%Ir (MDQ) of 400 thickness on the ito thin film surface of substrate top surface successively according to from bottom to top order again 2(acac) Bebq 2The Bebq of film, 250 thickness 2The LiF film of film, 10 thickness and the Al film of 1000 thickness are as first top electrode.Finish the preparation of the first coloured light unit.

Again on the ito thin film surface of substrate lower surface according to top-down order prepare successively 200 thickness TAPC film, 300 thickness be doped with 9%Ir (ppy) 3Bepp 2The Bepp of film, 250 thickness 2The Ag film of the LiF film of film, 10 thickness, the Al film of 100 thickness and 100 thickness.Finish the preparation of the second coloured light unit.

With B:C(x, y%) one deck in the expression structure, it makes material is B, and the C material that mixed, and ratio is y%, and the thickness of this layer is x (dust).Prepared device architecture is:

Al(1000??)/LiF(10??)/Bebq 2(250??)/?Bebq 2:Ir(MDQ) 2(acac)(400?,10%)/NPB(200??)/ITO/Glass/ITO/TAPC(200??)/Bepp 2:?Ir(ppy) 3(300?,9%)/?Bepp 2(250?)/?LiF(10??)/Al(100??)/Ag(100??)。

Being that the voltage that adds between the electrode of the first coloured light unit is V1, is to add voltage V2 between the electrode of the second coloured light unit.

Corresponding to different V1 and V2 parameter, resulting spectrum picture as shown in Figure 2.Spectrum one corresponding V1=5V shown in Fig. 2 a, V2=0V; Spectrum two corresponding V1=0V shown in Fig. 2 b, V2=5V; Spectrum three corresponding V1=5V shown in Fig. 2 c, V2=6V; Spectrum four corresponding V1=6V shown in Fig. 2 d, V2=5V.

The organic electroluminescence device of this color tunable uses the luminescence unit (Ir (MDQ) that glows 2(acac) dye body for red light-emitting) and the luminescence unit (Ir (ppy) of green light 3For green luminescence dyes body), by changing the voltage of two unit, change the luminous intensity of Unit two, by stack, realize different glow colors at last, for being 5V when the ruddiness cell voltage, the green glow cell voltage is 0 o'clock as spectrum one, device has only red light-emitting; Otherwise, when the green glow cell voltage is 5V, when red light unit voltage is 0V, the device transmitting green light; And when the equal making alive in Unit two, spectrum then is made up of ruddiness and green glow, changes both different voltages, regulates red, a green luminous intensity, realizes different glow colors.

As seen, organic electroluminescence device of the present invention can pass through the voltage of the coloured light unit of the different glow colors in adjusting transparent substrates both sides, obtains the spectrum of different luminous intensities, by the spectrum stack, obtains the light of different colours, and realization is to the adjusting of glow color.The more important thing is that device of the present invention can carry out color adaptation to preparing device, have and regulate flexible characteristics that applicability is strong.

Embodiment 3.

Adopt the device that can emit white light with embodiment 2 identical materials and equipment preparation.

Still with B:C(x, y%) one deck in the expression structure, it makes material is B, and the C material that mixed, and ratio is y%, and the thickness of this layer is x (dust).Prepared device architecture is:

Al(1000??)/LiF(10??)/Bebq 2(250??)/CBP:?(MPPZ)2Ir(acac)?(300?,8%)/NPB(200??)/ITO/Glass/ITO/NPB(200??)/MADN:DSA-ph(300?,7%)/?Bebq 2(250?)/?LiF(10??)/Al(100??)/Ag(100??)。

Corresponding to different V1 and V2 parameter, resulting spectrum picture as shown in Figure 3.Spectrum one corresponding V1=0V shown in Fig. 3 a, V2=6V; Spectrum two corresponding V1=5V shown in Fig. 3 b, V2=0V; Spectrum three corresponding V1=6V shown in Fig. 3 c, V2=5V; Spectrum four corresponding V1=5V shown in Fig. 3 d, V2=6V.

The organic electroluminescence device of this color tunable uses complementary colours blue and yellow, can generate white light by the last stack of voltage-regulation, realizes white-light illuminating.By changing the voltage of two unit, change the luminous intensity of Unit two, by stack, realize different glow colors at last, for being 5V when the blue light cell voltage, the gold-tinted cell voltage is 0 o'clock as spectrum two, device has only blue light emitting; Otherwise, when the gold-tinted cell voltage is 5V, when the blue light cell voltage is 0V, device emission gold-tinted; And when the equal making alive in Unit two, spectrum then is made up of blue light and green glow, changes both different voltages, regulates blue, the yellow luminous intensity of sending out, and realizes the luminous of white-light emitting or other colors.This scheme provides a kind of feasible method of stablizing for white light parts.

Organic electroluminescence device of the present invention can pass through the voltage of the coloured light unit of the different glow colors in adjusting transparent substrates both sides, obtains the spectrum of different luminous intensities, by the spectrum stack, obtains the light of different colours, and realization is to the adjusting of glow color.The more important thing is that device of the present invention can carry out color adaptation to preparing device, have and regulate flexible characteristics that applicability is strong.

Should be noted that at last; above embodiment is only in order to illustrate technical scheme of the present invention but not limiting the scope of the invention; although with reference to preferred embodiment the present invention has been done detailed description; those of ordinary skill in the art is to be understood that; can make amendment or be equal to replacement technical scheme of the present invention, and not break away from essence and the scope of technical solution of the present invention.

Claims (10)

1. the organic electroluminescence device of a color tunable is characterized in that: be provided with substrate, be arranged at the first coloured light unit and the second coloured light unit of substrate upper and lower surface respectively;
The described first coloured light unit is provided with first hearth electrode, the first organic electroluminescence transmitter unit and first top electrode;
The described second coloured light unit is provided with second hearth electrode, the second organic electroluminescence transmitter unit and second top electrode;
Described first top electrode, the first organic electroluminescence transmitter unit, first hearth electrode, substrate, second hearth electrode, the second organic electroluminescence reflector element and second top electrode are folded successively according to order from top to down and are established;
Be equipped with voltage V1 between described first hearth electrode and described first top electrode, add voltage V2 between described second hearth electrode and described second top electrode; By the emission spectrum of the regulation voltage V1 value adjusting first coloured light unit, by the emission spectrum of the regulation voltage V2 value adjusting second coloured light unit, the emission spectrum stack of the emission spectrum of the first coloured light unit and the second coloured light unit forms whole glow color.
2. the organic electroluminescence device of color tunable according to claim 1, it is characterized in that: described voltage V1 is adjustable in 0 ~ 30V scope, and described voltage V2 is adjustable in 0 ~ 30V scope.
3. the organic electroluminescence device of color tunable according to claim 2 is characterized in that: the voltage difference adjusting separately of described voltage V1, described voltage V2.
4. the organic electroluminescence device of color tunable according to claim 1 is characterized in that: the coloured light unit that the described first coloured light unit and the described second coloured light unit are different colours spectrum.
5. the organic electroluminescence device of color tunable according to claim 4, it is characterized in that: the coloured light unit that the described first coloured light unit and the described second coloured light unit are complementary color, the spectrum synthesize white light of the described first coloured light unit and the described second coloured light unit.
6. the organic electroluminescence device of color tunable according to claim 5, it is characterized in that: the described first coloured light unit is the coloured light unit of gold-tinted chromatogram, the described second coloured light unit is the coloured light unit of blue light chromatogram; Perhaps
The described first coloured light unit is the coloured light unit of blue light chromatogram, and the described second coloured light unit is the coloured light unit of gold-tinted chromatogram.
7. the organic electroluminescence device of color tunable according to claim 6 is characterized in that: the coloured light unit of the described gold-tinted chromatogram independent gold-tinted material of serving as reasons constitutes, perhaps for to be constituted by green light material and red light material.
8. the organic electroluminescence device of color tunable according to claim 1 is characterized in that:
Described substrate is set to transparent substrates, is specially glass, polyesters compound or polyimides compounds;
Described first hearth electrode, described second hearth electrode are set to transparency conductive electrode or translucent conductive electrode;
Described first top electrode, described second top electrode are any one in transparency electrode, semitransparent electrode or the opaque reflective conductive electrode, and described first top electrode and described second top electrode are not opaque reflective conductive electrode simultaneously;
Described transparency electrode to the light transmittance of wave-length coverage 420-700nm greater than 50%;
Described semitransparent electrode to the light transmittance of wave-length coverage 420-700nm greater than 20%;
Described opaque reflective conductive electrode is 20%-100% at the reflectivity of visible region;
Described transparency conductive electrode is any one in metal oxide, conducting polymer, electrical-conductive nanometer silver or the conduction simple substance carbon;
Described metal oxide comprises tin indium oxide, zinc oxide, indium zinc oxide, gallium oxide zinc, indium oxide gallium, indium oxide gallium zinc;
Described conduction simple substance carbon class comprises carbon nano-tube, Graphene or conductive black;
Described opaque reflective conductive electrode is set to aluminium, silver, chromium, copper or molybdenum electrode.
9. a preparation method who prepares as the organic electroluminescence device of any described color tunable of claim 1 to 8 is characterized in that: prepare the first coloured light unit and the second coloured light unit respectively in the substrate both sides.
10. the preparation method of the organic electroluminescence device of color tunable as claimed in claim 9 is characterized in that: specifically comprises,
Prepare first hearth electrode and second hearth electrode respectively in the both sides of substrate, then
At the first hearth electrode surface preparation, the first organic electroluminescence transmitter unit and first top electrode, at the second hearth electrode surface preparation, the second organic electroluminescence transmitter unit and second top electrode.
CN201310293131.9A 2013-07-13 2013-07-13 A kind of organic electroluminescence device of Color tunable and preparation method thereof CN103346164B (en)

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CN103807727A (en) * 2014-01-16 2014-05-21 北京京东方光电科技有限公司 Backlight module and display device
CN103928625A (en) * 2014-04-08 2014-07-16 陕西科技大学 Device structure of flexible transparent OLED and manufacturing method
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CN107946473A (en) * 2017-11-17 2018-04-20 中国计量大学 A kind of electroluminescent device of Wavelength tunable
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CN103807727A (en) * 2014-01-16 2014-05-21 北京京东方光电科技有限公司 Backlight module and display device
US9942961B2 (en) 2014-01-16 2018-04-10 Boe Technology Group Co., Ltd. Backlight module and display apparatus
CN103928625A (en) * 2014-04-08 2014-07-16 陕西科技大学 Device structure of flexible transparent OLED and manufacturing method
CN103928625B (en) * 2014-04-08 2016-05-18 陕西科技大学 The device architecture of a kind of flexible and transparent OLED and preparation method
CN105140410A (en) * 2015-06-26 2015-12-09 京东方科技集团股份有限公司 Electroluminescent device, manufacture and drive methods thereof, and display device
US10319290B2 (en) * 2015-06-26 2019-06-11 Boe Technology Group Co., Ltd. Electroluminescent device, manufacturing method and driving method thereof, and display device
US20170193897A1 (en) * 2015-06-26 2017-07-06 Boe Technology Group Co., Ltd. Electroluminescent device, manufacturing method and driving method thereof, and display device
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CN105789265A (en) * 2016-05-20 2016-07-20 广州新视界光电科技有限公司 Display device
CN107946473A (en) * 2017-11-17 2018-04-20 中国计量大学 A kind of electroluminescent device of Wavelength tunable
CN109686853A (en) * 2018-12-26 2019-04-26 上海晶合光电科技有限公司 A kind of organic electroluminescence device of color-adjustable

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