CN106601929A - Organic light-emitting display panel and device - Google Patents
Organic light-emitting display panel and device Download PDFInfo
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- CN106601929A CN106601929A CN201611156343.2A CN201611156343A CN106601929A CN 106601929 A CN106601929 A CN 106601929A CN 201611156343 A CN201611156343 A CN 201611156343A CN 106601929 A CN106601929 A CN 106601929A
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- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
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Abstract
The embodiment of the invention discloses an organic light-emitting display panel and device. The organic light-emitting display panel comprises: a substrate; a first electrode and a second electrode which are stacked and which are both arranged on the same side of the substrate; an organic light-emitting layer between the first electrode and the second electrode; and an electron transport layer between the organic light-emitting layer and the second electrode, wherein the second electrode comprises a silver-ytterbium alloy in which the volume ratio of ytterbium to silver is 1 to 1. The technical scheme of the embodiment of the invention can reduce the interfacial energy barrier between the electron transport layer and the cathode of the organic light-emitting display panel, improves an electron injection ability and the performance of the organic light-emitting display panel.
Description
Technical field
The present embodiments relate to organic light emitting display technology, more particularly to a kind of organic electroluminescence display panel and device.
Background technology
Organic light emitting display (Organic light Emitting Display), because it has backlight, right is not required to
Than spending high, thickness of thin, the technological merit such as visual angle is wide, response speed is fast, one of emphasis direction of display industry development is had become.
Existing organic electroluminescence display panel includes：Negative electrode, electron transfer layer, luminescent layer, hole transmission layer, anode and base
Plate.During work, a bias voltage is applied between the anode and negative electrode of organic electroluminescence display panel, hole and electronics break through interface
Energy barrier, respectively from migrating to luminescent layer in hole transmission layer and electron transfer layer, on luminescent layer, electronics and hole-recombination are produced
Exciton, exciton is unstable, gives off energy, and transfers energy to the molecule of organic luminescent substance in luminescent layer so as to from ground state
Transit to excited state.Excited state is very unstable, and excited molecule returns to ground state from excited state, radiation transistion and produce luminescence phenomenon.
In organic electroluminescence display panel, between organic material and electrode the height of interface energy barrier determine injection carrier quantity,
The brightness of organic electroluminescence display panel and efficiency.But in present organic electroluminescence display panel, due to electron transfer layer and the moon
Interface energy barrier between pole is too high, and the injectability of electronics is relatively low, and this will cause the poor-performing of organic electroluminescence display panel.
The content of the invention
The present invention provides a kind of organic electroluminescence display panel and device, to realize reducing between electron transfer layer and negative electrode
Interface energy barrier, improves the purpose of organic electroluminescence display panel performance.
In a first aspect, a kind of organic electroluminescence display panel is embodiments provided, the organic electroluminescence display panel bag
Include：
Substrate；
The first electrode being stacked and second electrode, the first electrode and the second electrode are respectively positioned on the substrate
The same side；
Organic luminous layer, between the first electrode and the second electrode；
Electron transfer layer, between the organic luminous layer and the second electrode；
Wherein, the second electrode includes silver-colored ytterbium alloy, and the ytterbium in the silver-colored ytterbium alloy is 1 with silver-colored volume ratio:1.
Second aspect, the embodiment of the present invention additionally provides a kind of organic light-emitting display device, the organic light-emitting display device
Including any one organic electroluminescence display panel provided in an embodiment of the present invention.
The embodiment of the present invention passes through to arrange second electrode
1:1, the interface energy barrier solved in existing organic electroluminescence display panel between electron transfer layer and negative electrode is too high, organic light emission
The low problem of display floater performance, realizes the interface energy reduced between organic electroluminescence display panel electron transfer layer and negative electrode
Barrier, improves electron injection ability, and the purpose of organic electroluminescence display panel performance.
Description of the drawings
Fig. 1 is a kind of structural representation of organic electroluminescence display panel provided in an embodiment of the present invention；
Fig. 2 a- Fig. 2 d are organic electroluminescence display panel provided in an embodiment of the present invention and existing organic electroluminescence display panel
Performance parameter comparison diagram；
Fig. 3 a and Fig. 3 b is different organic electroluminescence display panel performance parameter comparison diagrams provided in an embodiment of the present invention；
Fig. 4 is the structural representation of another kind of organic electroluminescence display panel provided in an embodiment of the present invention；
Fig. 5 is the structural representation of another organic electroluminescence display panel provided in an embodiment of the present invention；
Fig. 6 is the structural representation of another organic electroluminescence display panel provided in an embodiment of the present invention；
Fig. 7 is the structural representation of another organic electroluminescence display panel provided in an embodiment of the present invention；
Fig. 8 is the structural representation of another organic electroluminescence display panel provided in an embodiment of the present invention；
Fig. 9 is the structural representation of another organic electroluminescence display panel provided in an embodiment of the present invention；
Figure 10 is a kind of structural representation of organic light-emitting display device provided in an embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawings and examples the present invention is described in further detail.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that, in order to just
Part related to the present invention rather than entire infrastructure are illustrate only in description, accompanying drawing.
Fig. 1 is a kind of structural representation of organic electroluminescence display panel provided in an embodiment of the present invention.Referring to Fig. 1, this has
Machine light emitting display panel includes：Substrate 10；The first electrode 11 being stacked and second electrode 12, first electrode 11 and second is electric
Pole 12 is respectively positioned on the same side of substrate 10；Organic luminous layer 13, between first electrode 11 and second electrode 12；Electric transmission
Layer 14, between organic luminous layer 13 and second electrode 12.Wherein, second electrode 12 includes silver-colored ytterbium alloy, in silver-colored ytterbium alloy
Ytterbium and silver-colored volume ratio be 1:1.First electrode 11 is anode, and second electrode 12 is negative electrode.
Understood according to FN tunneling models (Fowler-Nordheim tunneling model), second electrode 12 includes silver
Ytterbium alloy can reduce the interface energy barrier between electron transfer layer 14 and second electrode 12.
Because second electrode 12 does not include ytterbium in existing organic electroluminescence display panel, two organic light emissions are made respectively and is shown
Show the local device of panel, wherein second electrode 12 does not include ytterbium comprising silver in first device B, second in second device A
Electrode 12 includes silver-colored ytterbium alloy, and the electron injection ability of two devices is studied, and its result is as shown in Figure 2 a.In Fig. 2 a,
Transverse axis represents the current density, J of device, and unit is milliampere (mA/cm every square centimeter2), the longitudinal axis represents the voltage U of device, unit
For volt (V).Referring to Fig. 2 a, under same current density J, the voltage U of second device A is lower than the voltage U of the first device B
It is many, this explanation arranges second electrode 12 and contributes positively to reduce interface energy barrier comprising silver-colored ytterbium alloy, is conducive to the injection of electronics.
Fig. 2 b-2d are organic electroluminescence display panel provided in an embodiment of the present invention and existing organic electroluminescence display panel
Performance curve comparison diagram.Wherein, D represents organic electroluminescence display panel provided in an embodiment of the present invention, and C represents existing organic
Light display floater, in existing organic electroluminescence display panel, second electrode does not include ytterbium comprising silver.
In Fig. 2 b, transverse axis represents the current density, J of organic electroluminescence display panel, and unit is milliampere (mA/ every square centimeter
cm2), the longitudinal axis represents the bias voltage U applied on organic electroluminescence display panel, and unit is volt (V).Can send out from Fig. 2 b
Existing, under identical current density, J, the bias voltage U that organic electroluminescence display panel D provided in an embodiment of the present invention needs is than existing
Bias voltage U required for some organic electroluminescence display panel C is much lower.This explanation arranges second electrode 12 comprising silver-colored ytterbium alloy
Contribute positively to reduce the interface energy barrier between electron transfer layer 14 and second electrode 12 (i.e. negative electrode), be conducive to from second electrode
The more electronics of 12 injections, promote carrier balance in organic electroluminescence display panel, and then reduce organic electroluminescence display panel
Running voltage (i.e. bias voltage U).
In Fig. 2 c, transverse axis represents the current density, J of organic electroluminescence display panel, and unit is milliampere (mA/ every square centimeter
cm2), the longitudinal axis represents luminous efficiency E of organic electroluminescence display panel, and unit is per ampere of candela (cd/A).Referring to Fig. 2 c,
Under identical current density, J, luminous efficiency E of organic electroluminescence display panel D provided in an embodiment of the present invention is apparently higher than existing
Organic electroluminescence display panel C luminous efficiency E.This explanation arranges second electrode 12 and contributes positively to be lifted comprising silver-colored ytterbium alloy
The performance of organic electroluminescence display panel.
In Fig. 2 d, transverse axis represents the operating time of organic electroluminescence display panel, and unit is hour (h).The longitudinal axis represents organic
Light emitting display panel luminosity L and original intensity L0Ratio.Referring to Fig. 2 d, organic electroluminescence display panel D's is bright after improvement
L is spent from original intensity L0(correspondence vertical coordinate is 100) decays to original intensity L072% (correspondence vertical coordinate be 72) this process
In the operating time of organic electroluminescence display panel D provided in an embodiment of the present invention be approximately equal to 430h, and existing organic light emission is aobvious
Show that panel C operating times are approximately equal to 180h.Obviously, organic electroluminescence display panel D operating times ratio provided in an embodiment of the present invention
Existing organic electroluminescence display panel C operating time length it is many.This explanation is relative to existing organic electroluminescence display panel C, sheet
The organic electroluminescence display panel D life-spans that inventive embodiments are provided are longer.In other words, it is true comprising silver-colored ytterbium alloy that second electrode 12 is set
Contribute in fact extending the life-span of organic electroluminescence display panel.
Further, research shows, in the silver-colored ytterbium alloy of second electrode 12, ytterbium is different from silver-colored volume ratio, and organic light emission shows
There is certain difference in the performance parameter for showing panel.Fig. 3 a and Fig. 3 b is different organic light emitting display faces provided in an embodiment of the present invention
Plate performance parameter comparison diagram.Wherein, P represents that the thickness of second electrode 12 is And ytterbium and silver-colored volume ratio are 1:1 organic light emission
Display floater；Q represents that the thickness of second electrode 12 isAnd ytterbium and silver-colored volume ratio are 5:1 organic electroluminescence display panel；M tables
Show that the thickness of second electrode 12 isAnd ytterbium and silver-colored volume ratio are 1:1 organic electroluminescence display panel；N represents that second electrode 12 is thick
Spend and beAnd ytterbium and silver-colored volume ratio are 5:1 organic electroluminescence display panel.
In Fig. 3 a, transverse axis represents the current density, J of organic electroluminescence display panel, and unit is milliampere (mA/ every square centimeter
cm2), the longitudinal axis represents the bias voltage U applied on organic electroluminescence display panel, and unit is volt (V).Contrast organic light emitting display
Panel P and the corresponding curves of organic electroluminescence display panel Q, or contrast organic electroluminescence display panel M and organic light emitting display face
The corresponding curves of plate N, it can be found that when the thickness of second electrode 12 is identical, ytterbium is 1 with silver-colored volume ratio:1 organic light emitting display face
Bias voltage U required for plate is 5 with silver-colored volume ratio than ytterbium:Bias voltage U required for 1 organic electroluminescence display panel is low.
It is 1 that this explanation arranges ytterbium with silver-colored volume ratio:1 is more conducive to reduce between electron transfer layer 14 and second electrode 12 (i.e. negative electrode)
Interface energy barrier, is conducive to injecting more electronics from second electrode 12, promotes carrier balance in organic electroluminescence display panel, enters
And reduce the running voltage (i.e. bias voltage U) of organic electroluminescence display panel.
In Fig. 3 b, transverse axis represents the current density, J of organic electroluminescence display panel, and unit is milliampere (mA/ every square centimeter
cm2), the longitudinal axis represents luminous efficiency E of organic electroluminescence display panel, and unit is per ampere of candela (cd/A).Organic of contrast
Light display floater P and the corresponding curves of organic electroluminescence display panel Q, or contrast organic electroluminescence display panel M and organic light emission
The corresponding curves of display floater N, it can be found that when the thickness of second electrode 12 is identical, ytterbium is 1 with silver-colored volume ratio:1 organic light emission
Luminous efficiency E of display floater is 5 with silver-colored volume ratio than ytterbium:The luminous efficiency of 1 organic electroluminescence display panel is high.This explanation sets
It is 1 that ytterbium is put with silver-colored volume ratio:1 is more conducive to improve the luminous efficiency of organic electroluminescence display panel, and then it is aobvious to lift organic light emission
Show the performance of panel.
Further, each organic electroluminescence display panel in Comprehensive Correlation Fig. 3 a and Fig. 3 b, it is found that second electrode 12
Thickness beAnd ytterbium and silver-colored volume ratio are 1:Bias voltage U required for 1 organic electroluminescence display panel M is minimum, lights
Efficiency E highest.That is, the performance of organic electroluminescence display panel M is optimal.
Further, referring to Fig. 1, in the organic electroluminescence display panel, first electrode 11 is located at second electrode 12 and substrate
Between 10.For this organic electroluminescence display panel, in specific design, the organic electroluminescence display panel can be designed as top
Emission-type, bottom emitting formula or bilateral emission-type.
Exemplarily, as shown in figure 4, the light-emitting mode of the organic electroluminescence display panel is top emitting.For this organic
Light display floater, second electrode 12 is used as light emission side electrode, after light is formed at organic luminous layer 13, Jing electron transfer layers 14
And the outgoing of second electrode 12.Specifically, first electrode 11 includes the first transparent conductive film 111, the second transparent conductive film
112 and the reflectance coating 113 between the first transparent conductive film 111 and the second transparent conductive film 112.Alternatively, in tool
When body is designed, the material and thickness of each film layer of first electrode 11 can have various, as long as can ensure that first electrode 11 has very
Hole injection capacity well and good reflecting effect.For example, the He of the first transparent conductive film 111 in first electrode 11
The material of second transparent conductive film 112 can be tin indium oxide or indium zinc oxide, and the material of reflectance coating 113 can be silver or contain
The alloy of silver, the thickness of reflectance coating 113 can be 50nm-150nm.The thickness of second electrode 12 can have various, as long as can be really
Protect second electrode 12 and there is good electron injection ability and good light penetration.For example, second electrode 12
Thickness can be 10nm-20nm.
Fig. 5 is the structural representation of another organic electroluminescence display panel provided in an embodiment of the present invention.Referring to Fig. 5, should
The light-emitting mode of organic electroluminescence display panel is bottom emitting.The organic electroluminescence display panel, first electrode 11 is used as light emission side electricity
Pole, after light is formed at organic luminous layer 13, Jing first electrodes 11 and the outgoing of substrate 10.Specifically, first electrode 11
Material is conductive transparent material.Alternatively, in specific design, the material and thickness of first electrode 11 can have various, as long as
Can ensure that first electrode 11 has good Hole injection capacity and good light penetration.For example, first is constituted
The transparent conductive film material of electrode 11 can be tin indium oxide or indium zinc oxide.The thickness of second electrode 12 can have various,
As long as can ensure that second electrode 12 has good electron injection ability and good reflecting effect.For example, second is electric
The thickness of pole 12 can be 50nm-150nm.
Fig. 6 is the structural representation of another organic electroluminescence display panel provided in an embodiment of the present invention.Compared with Fig. 5,
In Fig. 6 in organic electroluminescence display panel, second electrode 12 is located between first electrode 11 and substrate 10.Similarly, specifically setting
Timing, can be designed as top emitting formula, bottom emitting formula or bilateral emission-type etc. by the organic electroluminescence display panel.
Referring to Fig. 6, the light-emitting mode of the organic electroluminescence display panel is top emitting, the organic electroluminescence display panel, first
Electrode 11 is used as light emission side electrode, after light is formed at organic luminous layer 13, the outgoing of Jing first electrodes 11.Specifically, first
The material of electrode 11 is conductive transparent material.Alternatively, in specific design, the material and thickness of first electrode 11 can have many
Kind, as long as can ensure that first electrode 11 has good Hole injection capacity and good light penetration.For example, structure
Transparent conductive film material into first electrode 11 can be tin indium oxide or indium zinc oxide.The thickness of second electrode 12 can have
It is various, as long as can ensure that second electrode 12 has good electron injection ability and good reflecting effect.For example,
The thickness of the second electrode of two electrode 12 can be 50nm-150nm.
Fig. 7 is the structural representation of another organic electroluminescence display panel provided in an embodiment of the present invention.Referring to Fig. 7, should
The light-emitting mode of organic electroluminescence display panel is bottom emitting.For the organic electroluminescence display panel, second electrode 12 is used as going out light
Lateral electrode, after light is formed at organic luminous layer 13, Jing electron transfer layers 14, second electrode 12 and the outgoing of substrate 10.Tool
Body ground, first electrode 11 is comprising the first transparent conductive film 111, the second transparent conductive film 112 and positioned at the first conductive, transparent
Reflectance coating 113 between the transparent conductive film 112 of thin film 111 and second.Alternatively, in specific design, first electrode 11
The material and thickness of each film layer can have various, as long as can ensure that first electrode 11 has good Hole injection capacity and very
Good reflecting effect.For example, the first transparent conductive film 111 and the material of the second transparent conductive film 112 in first electrode 11
Material can be tin indium oxide or indium zinc oxide, and the material of reflectance coating 113 can be the alloy of silver or argentiferous, reflectance coating 113
Thickness can be 50nm-150nm.The thickness of second electrode 12 can have various, as long as it is fine to can ensure that second electrode 12 has
Electron injection ability and good light penetration.For example, the thickness of second electrode 12 can be 10nm-20nm.
If the light-emitting mode of organic electroluminescence display panel refers to that first electrode 11 and second electrode 12 are same for bilateral emission-type
Shi Zuowei light emission side electrodes, after light is formed at organic luminous layer 13, a part of Jing electron transfer layers 14 and second electrode
12 outgoing, another part is through the outgoing of first electrode 11.
On the basis of above-mentioned technical proposal, the material of organic luminous layer 13 can be sent out comprising red emitting material, green glow
Luminescent material and blue light emitting material.When in use, alternatively, red emitting material sends light, green light luminescent material send
The light that light and blue light emitting material send is mixed to get white light.
Further, referring to Fig. 8, the organic electroluminescence display panel can also include color blocking layer 15, and color blocking layer 15 is arranged at
The light emission side of organic electroluminescence display panel, so that the white light Jing color blocking layers 15 that organic electroluminescence display panel sends are changed into colourama.
Typically, red emitting material and green light luminescent material can include phosphor material, and blue light emitting material can be wrapped
Containing fluorescent material.Wherein, fluorescent material can include thermal activities delayed fluorescence material.
Another organic electroluminescence display panel that Fig. 9 is provided for present invention enforcement, referring to Fig. 9, the organic light emitting display face
Plate can also include hole transmission layer 16, and hole transmission layer 16 is located between first electrode 11 and organic luminous layer 13.
The embodiment of the present invention additionally provides a kind of organic light-emitting display device.Figure 10 is one kind provided in an embodiment of the present invention
The structural representation of organic light-emitting display device, referring to Figure 10, the organic light-emitting display device 101 is carried including the embodiment of the present invention
For any one organic electroluminescence display panel.The organic light-emitting display device is specifically as follows mobile phone, notebook computer, intelligence
Information enquiry machine of wearable device and saloon etc..
Organic light-emitting display device provided in an embodiment of the present invention includes silver-colored ytterbium alloy, and silver-colored ytterbium by arranging second electrode
Ytterbium in alloy is 1 with silver-colored volume ratio:1, in the existing organic electroluminescence display panel of solution between electron transfer layer and negative electrode
Interface energy barrier is too high, the low problem of organic electroluminescence display panel performance, realizes reduction organic electroluminescence display panel electric transmission
Interface energy barrier between layer and negative electrode, improves electron injection ability, and the purpose of organic electroluminescence display panel performance.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although the present invention is carried out by above example
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
More other Equivalent embodiments can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (18)
1. a kind of organic electroluminescence display panel, it is characterised in that include：
Substrate；
The first electrode being stacked and second electrode, the first electrode and the second electrode are respectively positioned on the same of the substrate
Side；
Organic luminous layer, between the first electrode and the second electrode；
Electron transfer layer, between the organic luminous layer and the second electrode；
Wherein, the second electrode includes silver-colored ytterbium alloy, and the ytterbium in the silver-colored ytterbium alloy is 1 with silver-colored volume ratio:1.
2. organic electroluminescence display panel according to claim 1, it is characterised in that
The first electrode is located between the second electrode and the substrate.
3. organic electroluminescence display panel according to claim 2, it is characterised in that the organic electroluminescence display panel is sent out
Optical mode is top emitting, wherein, the first electrode is comprising the first transparent conductive film, the second transparent conductive film and positioned at institute
State the reflectance coating between the first transparent conductive film and second transparent conductive film.
4. organic electroluminescence display panel according to claim 2, it is characterised in that the organic electroluminescence display panel is sent out
Optical mode is bottom emitting, wherein, the material of the first electrode is conductive transparent material.
5. organic electroluminescence display panel according to claim 1, it is characterised in that the second electrode is located at described first
Between electrode and the substrate.
6. organic electroluminescence display panel according to claim 5, it is characterised in that the organic electroluminescence display panel is sent out
Optical mode is top emitting, wherein, the material of the first electrode is conductive transparent material.
7. organic electroluminescence display panel according to claim 5, it is characterised in that the organic electroluminescence display panel is sent out
Optical mode is bottom emitting, wherein, the first electrode is comprising the first transparent conductive film, the second transparent conductive film and positioned at institute
State the reflectance coating between the first transparent conductive film and second transparent conductive film.
8. the organic electroluminescence display panel according to claim 3 or 7, it is characterised in that
First transparent conductive film described in the first electrode and the second transparent conductive film material be tin indium oxide or
Indium zinc oxide, the material of the reflectance coating is the alloy of silver or argentiferous, and the thickness of the reflectance coating is 50nm-150nm.
9. the organic electroluminescence display panel according to claim 3 or 7, it is characterised in that
The thickness of the second electrode is 10nm-20nm.
10. the organic electroluminescence display panel according to claim 4 or 6, it is characterised in that the transparent conductive film material
For tin indium oxide or indium zinc oxide.
11. organic electroluminescence display panels according to claim 4 or 6, it is characterised in that
The thickness of the second electrode is 50nm-150nm.
12. organic electroluminescence display panels according to claim 1, it is characterised in that the material bag of the organic luminous layer
Containing red emitting material, green light luminescent material and blue light emitting material.
13. organic electroluminescence display panels according to claim 12, it is characterised in that what the red emitting material sent
The light that the light and blue light emitting material that light, green light luminescent material send sends is mixed to get white light.
14. organic electroluminescence display panels according to claim 13, it is characterised in that also including color blocking layer, the color blocking
Layer is arranged at the light emission side of the organic electroluminescence display panel, so that described in the white light Jing that sends of the organic electroluminescence display panel
Color blocking layer is changed into colourama.
15. organic electroluminescence display panels according to claim 12, it is characterised in that the red emitting material and described
Green light luminescent material includes phosphor material, and the blue light emitting material includes fluorescent material.
16. organic electroluminescence display panels according to claim 15, it is characterised in that the fluorescent material includes thermal activities
Delayed fluorescence material.
17. organic electroluminescence display panels according to claim 1, it is characterised in that also including hole transmission layer, the sky
Cave transport layer is located between the first electrode and the organic luminous layer.
18. a kind of organic light-emitting display devices, it is characterised in that show including the organic light emission described in any one of claim 1-17
Show panel.
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| CN201611156343.2A CN106601929A (en) | 2016-12-14 | 2016-12-14 | Organic light-emitting display panel and device |
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| CN201611156343.2A CN106601929A (en) | 2016-12-14 | 2016-12-14 | Organic light-emitting display panel and device |
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| KR20030019057A (en) * | 2001-08-29 | 2003-03-06 | 가부시키가이샤 히타치세이사쿠쇼 | Organic light emitting element and display device using organic light emitting element |
| CN1961617A (en) * | 2004-03-29 | 2007-05-09 | 富士胶片株式会社 | Organic electroluminescent device, process for fabricating the same and display |
| WO2013000163A1 (en) * | 2011-06-30 | 2013-01-03 | 海洋王照明科技股份有限公司 | Top-emitting flexible organic light emission diode device and preparation method thereof |
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