CN108539030A - A kind of organic light emitting display panel and its display device - Google Patents
A kind of organic light emitting display panel and its display device Download PDFInfo
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- CN108539030A CN108539030A CN201810297209.7A CN201810297209A CN108539030A CN 108539030 A CN108539030 A CN 108539030A CN 201810297209 A CN201810297209 A CN 201810297209A CN 108539030 A CN108539030 A CN 108539030A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/14—Carrier transporting layers
- H10K50/16—Electron transporting layers
- H10K50/165—Electron transporting layers comprising dopants
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- H—ELECTRICITY
- 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
- H10K50/85—Arrangements for extracting light from the devices
- H10K50/858—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
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Abstract
A kind of organic light emitting display panel of present invention offer and its display device, are related to display technology field, for improving the colour cast under big visual angle.Wherein, which includes：Organic luminescent device, the organic luminescent device include first electrode and second electrode, and the organic function layer between the first electrode and the second electrode；The organic function layer includes electron transfer layer, wherein at least doped with the first metal in the electron transfer layer, first metal is alkaline-earth metal or rare earth metal, and the refractive index for the light that the electron transfer layer corresponding wavelength is 550nm meets：N1 (λ=550nm)≤1.9.Above-mentioned organic light emitting display panel is suitable for display device.
Description
Technical field
The present invention relates to display technology field more particularly to a kind of organic light emitting display panels and its display device.
Background technology
Receive in the sense organ of people information it is most be exactly the organs of vision (eyes), in production and life, Ren Menxu
It is increasingly utilized abundant visual information, thus display technology plays very important angle in mankind nowadays society
Color.So far from appearance, technology development is also very swift and violent for display technology, as the development and the mankind of society are to material life demand
It is continuously improved, current display technology is high, long towards high contrast, high resolution, full-color EL display, low-power consumption, reliability
Service life and thin and light direction quickly stride forward.
Wherein, Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED) display device is due to tool
Have the advantages that wide self-luminous, fast response time, visual angle, high-resolution, high brightness, bending resistance be strong, low-power consumption, is increasingly becoming liquid
The strong rival of LCD panel is known as next-generation dreamlike display technology.
There are more serious colour cast under big visual angle, which is generally existing and urgently to be resolved hurrily in OLED display device.
Invention content
A kind of organic light emitting display panel of offer of the embodiment of the present invention and its organic light-emitting display device, regard greatly for improving
Colour cast under angle.
In a first aspect, the present invention provides a kind of organic light emitting display panel, organic light emitting display panel includes：
Organic luminescent device, the organic luminescent device includes first electrode and second electrode, and is located at described first
Organic function layer between electrode and the second electrode；
The organic function layer includes electron transfer layer, wherein
At least doped with the first metal in the electron transfer layer, first metal is alkaline-earth metal or rare earth gold
Belong to, and the refractive index for the light that the electron transfer layer corresponding wavelength is 550nm meets：N1 (λ=550nm)≤1.9.
Second aspect, the present invention provide a kind of display device, and display device includes involved by first aspect present invention
Organic light emitting display panel.
Any technical solution in above-mentioned technical proposal has the advantages that：
The present embodiment, since the refractive index for being entrained in the first metal of electron transfer layer is low, so that the electron transfer layer
After adulterating the first metal, the refractive index of the light in 550nm is less than 1.9, to pass through electron-transport when the light projected
After layer, original transmission path is changed so that light is projected closer to normal direction, that is, at positive visual angle or is approached
The low-angle at positive visual angle projects, and then causes the angle for injecting to the light in air from second electrode (cathode) smaller, avoids
It is projected under big visual angle, and then avoids the color offset phenomenon under big visual angle.The present embodiment compared with the existing technology, can have
Effect ground improves the color offset phenomenon under big visual angle.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Some bright embodiments for those of ordinary skill in the art without having to pay creative labor, can be with
Obtain other attached drawings according to these attached drawings.
A kind of structural schematic diagram for the organic light emitting display panel that Fig. 1 is provided by the embodiment of the present invention；
Another structural schematic diagram for the organic light emitting display panel that Fig. 2 is provided by the embodiment of the present invention；
The principle schematic for the organic light emitting display panel that Fig. 3 is provided by the embodiment of the present invention；
Another structural schematic diagram for the organic light emitting display panel that Fig. 4 is provided by the embodiment of the present invention；
Another structural schematic diagram for the organic light emitting display panel that Fig. 5 is provided by the embodiment of the present invention；
Another structural schematic diagram for the organic light emitting display panel that Fig. 6 is provided by the embodiment of the present invention；
Another structural schematic diagram for the organic light emitting display panel that Fig. 7 is provided by the embodiment of the present invention；
The structural schematic diagram for the display device that Fig. 8 is provided by the embodiment of the present invention.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
The every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
The term used in embodiments of the present invention is the purpose only merely for description specific embodiment, is not intended to be limiting
The present invention.In the embodiment of the present invention and "an" of singulative used in the attached claims, " described " and "the"
It is also intended to including most forms, unless context clearly shows that other meanings.
It should be appreciated that term "and/or" used herein is only a kind of incidence relation of description affiliated partner, indicate
There may be three kinds of relationships, for example, A and/or B, can indicate：Individualism A, exists simultaneously A and B, individualism B these three
Situation.In addition, character "/" herein, it is a kind of relationship of "or" to typically represent forward-backward correlation object.
It will be appreciated that though in embodiments of the present invention metal, but these may be described using term first, second etc.
Metal should not necessarily be limited by these terms.These terms are only used for metal being distinguished from each other out.For example, not departing from the embodiment of the present invention
In the case of range, the first metal can also be referred to as the second metal, and similarly, the second metal can also be referred to as the first gold medal
Belong to.
It should be noted that the nouns of locality such as "upper", "lower", "left", "right" described in the embodiment of the present invention are with attached drawing
Shown in angle come what is be described, should not be construed as the restriction to the embodiment of the present invention.In addition within a context, it is also necessary to manage
Solution can not only be formed directly into another when mentioning an element and being formed on "above" or "below" another element
Either "lower" can also be indirectly formed by intermediary element in another element "upper" or "lower" for a element "upper".
It is detailed introduce the present embodiment before, be simply situated between to the structure for the organic light emitting display panel being related to
It continues：
As shown in Figure 1, a kind of structural schematic diagram for the organic light emitting display panel that its embodiment of the present invention is provided, organic
Light emitting display panel 1 includes first substrate 10, multiple organic luminescent devices 11 on 10 1 side surface of first substrate is arranged, often
A organic luminescent device 11 includes first electrode 12, second electrode 14 and is arranged between first electrode 12 and second electrode 14
Organic function layer 13, the first electrode 12 are in contact with a side surface of first substrate 10, and second electrode 14 is located at organic functions
Layer 13 deviates from a side surface of first substrate 10.It should be noted that first electrode 12 and second electrode 14 are public film layer,
Therefore the first electrode 12 in Fig. 1 and second electrode 14 are a whole film layer.
It is understood that the first substrate 10 in the present embodiment can be flexible base board, corresponding organic light emitting display face
Plate 1 can be flexible organic light emitting display panel, and flexible organic light emitting display panel has low-power consumption and the special efficacys such as flexible, is applicable in
In various display equipment, it is particularly suitable in wearable display equipment.Optionally, the material of flexible base board is polyester-imide or gathers
Terephthalate fat resin.In addition, first substrate 10 can also be rigid substrates, corresponding organic light emitting display panel 1
For rigid organic light emitting display panel.In fact, the present embodiment is not particularly limited to the material of organic light emitting display panel.
In the present embodiment, first electrode 12 can be regarded as anode, to anode (first electrode 12) during electroluminescent
Apply positive voltage.The material of first electrode 12 in the present embodiment can be tin indium oxide.Specifically, first electrode 12 includes at least
Reflective membrane, reflective membrane can be located at first electrode 12 on a side surface of first substrate 10, and the material of reflective membrane can
For silver.First electrode 12 may also include transparent conductive film, be located at the side surface that reflective membrane deviates from first substrate 10, transparent
The material of conductive film can be tin indium oxide or indium zinc oxide.
In the present embodiment, second electrode 14 can be regarded as cathode, can be to cathode (second electrode during electroluminescent
14) apply negative voltage.The material of second electrode 14 can be Ag, Al, Ca, In, Li, the harmonic functions such as Mg metal material or low work content
Number composite material.The material of second electrode 14 in this example can be that U.S. silver alloy, silver alloy, silver-colored ytterbium alloy or silver are dilute
One kind in earth metal alloy.
It is understood that there is the organic light emitting display panel 1 m kinds to go out light color, m is whole more than or equal to 3
Number, illustrative the present embodiment may include that three kinds go out light color, respectively red, green and blue, each organic illuminator
Part 11 corresponds to one kind and going out light color.
With continued reference to Fig. 1, the organic light emitting display panel 1 in this example can be regarded as top emitting organic light emitting display face
Plate, that is to say, that first electrode 12 can be regarded as total reflection anode, and second electrode 14 can be regarded as semitransparent cathode, wherein complete
Reflection anode (first electrode 12) constitutes microcavity (resonant cavity) with semitransparent cathode (second electrode 14), when microcavity chamber is long and light wave
When wavelength meets certain relationship, the light of specific wavelength (a certain monochromatic wavelength) can be strengthened, spectrum narrowing, and microcavity occurs
Effect.Microcavity effect has the effects that selection to light source, narrows and reinforces, be often used to raising organic luminescent device coloration,
Reinforce the emissive porwer of specific wavelength and changes the luminescent color etc. of organic luminescent device.
In the prior art, microcavity effect includes wide-angle interference and two kinds of interference patterns of multiple-beam interference, wherein due to wide-angle
The presence of interference can influence the viewing angle characteristic of organic luminescent device, i.e., with the offset at visual angle, glow peak shifts, and leads to brightness
Difference and color-coordinate shift, especially under big visual angle, optical property is bad, and colour cast is more serious.
It is assumed that angle when by eyes and screen vertical is referred to as positive visual angle, this angle can be set to 0 °, in this angle
The microcavity effect of the light of lower injection is most apparent, i.e., the light color projected under the visual angle is full, does not occur colour cast or appearance
Colour cast do not discovered by human eye.On the basis of screen direction, eyes can be referred to as to squint to the left or when right bank
Angle refers to an angle value more than 0 ° and less than 90 °, and the angle value is absolute figure, for example, eyes are tilted to the right
45 °, angle of squint at this time is 45 °, and eyes are tilted to the left 45 °, and angle of squint at this time is also 45 °.And the angle of angle of squint increases
Big visual angle is can be regarded as to a certain extent greatly, under big visual angle, glow peak shifts, and leads to colour cast.
To solve the above-mentioned problems, inventor devises following skill scheme：
The present embodiment provides a kind of organic light emitting display panels, as shown in Fig. 2, it is had by what the embodiment of the present invention provided
Another structural schematic diagram of machine light emitting display panel, which includes organic luminescent device 11, exemplary
By Fig. 2 shows an organic luminescent device for, receive 11 structure of the organic luminescent device, as shown in Fig. 2, this has
Machine luminescent device 11 includes first electrode 12 and second electrode 14, and having between first electrode 12 and second electrode 14
Machine functional layer 13.
Continue to participate in Fig. 2, which includes electron transfer layer 131, wherein in electron transfer layer 131 at least
Doped with the first metal 1311, the first metal 1311 is alkaline-earth metal or rare earth metal, and 131 corresponding wavelength of electron transfer layer
Refractive index for the light of 550nm meets：N1 (λ=550nm)≤1.9.
It should be noted that for carrying out the top emitting organic luminescent device of light extraction conducive to microcavity effect, shine spy
Property is related with the resonance of the light of specific wavelength in microcavity, meanwhile, also related to the thickness of every layer material and refractive index, refractive index
Small, light is projected close to normal direction, that is to say, that low-angle of the light from positive visual angle or close to positive visual angle projects, and avoids
It is projected under big visual angle, also avoids the color offset phenomenon under big visual angle.
The refractive index n1 (λ=550nm)≤1.9 of light of the electron transfer layer when wavelength is 550nm, the numerical value pass through hair
It finds after person of good sense's test of many times, under the wavelength of 550nm, after refractive index is more than 1.9, then obviously turns towards low-angle in colour cast
It moves, that is to say, that also will appear color offset phenomenon under smaller visual angle.Preferably, in the present embodiment, electron transfer layer is in wavelength
The refractive index n1 (λ=550nm)≤1.7 of light when 550nm.Under the 550nm wavelength, the refractive index of electron transfer layer is less than
Better when 1.7, light is projected close to normal (positive visual angle) direction, therefore can be effectively prevented from big visual angle and be projected relationship, in turn
Avoid big visual angle colour cast.
In this implementation, since the refractive index for being entrained in 131 first metal of electron transfer layer is low, so that the electron-transport
For layer after adulterating the first metal, the refractive index of the light in 550nm is less than 1.9, to work as the light projected from luminescent layer,
After electron transfer layer 131, original transmission path is changed so that light is projected close to normal direction, that is,
Just visual angle or the low-angle close to positive visual angle is projected, and then causes to inject to the light in air from second electrode 14 (cathode)
Angle it is smaller, avoid and projected under big visual angle, and then avoid the color offset phenomenon under big visual angle.The present embodiment is relative to existing
There is technology, the color offset phenomenon under big visual angle can be effectively improved.
Can be any one in red, green and blue by the light color that goes out of organic luminescent device 11 in this present embodiment
Kind, therefore the refractive index of the present embodiment electron transfer layer that can be included to it according to the colour cast power of different colours is adjusted
Section, the visual angle color offset phenomenon under the big visual angle of light color is gone out so as to improve each.
In order to which those skilled in the art can be apparent from the present embodiment, below to the organic light emitting display of the present embodiment
The principle of luminosity of panel is simply introduced：
As shown in figure 3, the principle schematic of its organic light emitting display panel provided by the embodiment of the present invention, You Jigong
Ergosphere 13 includes electron transfer layer 131, hole transmission layer 133 and luminescent layer 132, and wherein electron transfer layer 131 is close to second
Electrode 14 is arranged, and hole transmission layer 133 is arranged close to first electrode 12, and luminescent layer 132 is located at electron transfer layer 131 and hole passes
Between defeated layer 133.
Under the action of extra electric field, electronics e is injected from second electrode 14 (cathode) to organic function layer 13, hole h from
First electrode 12 (anode) is injected to organic function layer 13.Injected electrons e from the electron transfer layer 131 of organic function layer 13 to
Luminescent layer 132 migrates, and injected holes h is migrated from the hole transmission layer 133 of organic function layer 13 to luminescent layer 132.Injection
Electronics e and injected holes h generates exciton after luminescent layer 132 is compound.Exciton migrates under the action of electric field, by energy transmission
To the luminescent organic molecule in luminescent layer 132, the electronics of luminescent organic molecule by ground state transition to excitation state and releases energy, most
Energy is discharged and is emitted beam by the form of photon afterwards.
In addition, by taking the organic light emitting display panel of top emitting as an example, to how to improve wide-angle (big visual angle) color in this implementation
It explains partially：
As shown in figure 4, it is another structural schematic diagram of organic light emitting display panel provided in an embodiment of the present invention, note
The electronics e and injected holes h entered is after luminescent layer 132 is compound, and the light of production is from luminescent layer 132 to second electrode 14 (half
Transparent cathode) direction injection, the light is after by electron transfer layer 131, since electron transfer layer is adulterating the first metal
Refractive index after 1311 declines, therefore light is caused to be projected close to normal direction, that is, close to positive visual angle or smaller
It projects at visual angle.Since the light is not projected through excessive visual angle, so as to avoid the colour cast under big visual angle, and then the present embodiment can
Improvement even is eliminated big visual angle color offset phenomenon.
It is understood that the area of pixel unit can be regarded as the aperture opening ratio of pixel unit, area is bigger, aperture opening ratio
Higher, brightness is higher.Luminous intensity, it can be understood as on a certain specific light emission direction, the total amount of the light sent out.
Light emission luminance, it can be understood as the luminous intensity on unit area.
Further, in a kind of specific embodiment, which can be lanthanide series metal.Lanthanide series metal can reduce
The work function of electron transfer layer increases the mobility of electronics, that is to say, that so that the electronics that cathode (second electrode) generates is moving
It is more prone to reach electron transfer layer during moving.
Further, in a kind of more specifically embodiment, which can be ytterbium or samarium.Numerous
In lanthanide series, the present embodiment is after composite price and using effect, preferably ytterbium or samarium.
In one embodiment, ranging from P1≤7% of volume accounting P1 of first metal in electron transfer layer.When
When doping concentration is higher, the concentration that local concentration is far longer than incorporation is may result in, generates defect；When doping concentration is too low
When, the refractive index of electron transfer layer at a particular wavelength does not reach requirement, the improvement unobvious of visual angle colour cast.Also, by
Uniformity when being limited to technology controlling and process low concentration doping is difficult to ensure.Therefore, this implementation by the first metal in resistive transmission layer
Volume ratio P1≤7%.
In one embodiment, as shown in figure 5, its organic light emitting display panel provided by the embodiment of the present invention
Another structural schematic diagram, the electron transfer layer 131 further include the second metal 1312, and the refractive index of the second metal 1312 is less than the
The refractive index of one metal 1311.The refractive index of second metal 1312 is smaller, therefore when the second metal 1312 mixes electron-transport
After layer 131 so that refractive index smaller of the electron transfer layer 131 under specific wavelength (550nm), smaller refractive index can be into
Improve to one step the big visual angle colour cast of the light projected from the electron transfer layer 131.Specifically, as shown in fig. 6, it is the present invention
Another structural schematic diagram for the organic light emitting display panel that embodiment provides, the light projected from luminescent layer 132, by electricity
After sub- transport layer 131, since the electron transfer layer 131 is doped with the first metal 1311 and the second metal 1312, its electronics is made to pass
Refractive index of the defeated layer 131 under specific wavelength (550nm) is smaller, so that the light projected by the electron transfer layer 131
It projects, i.e., is projected close to positive visual angle or at low-angle visual angle, to avoid being projected under big visual angle, in turn close to normal direction
Avoid the colour cast under big visual angle.
Furthermore, it is desirable to which supplement can be effectively reduced the electron transition gesture since the first metal 1311 is lanthanide series
It builds, increases the mobility of electronics so that more electronics are migrated from cathode (second electrode 14) to luminescent layer 132, and then are increased
The recombination rate of electrons and holes improves light extraction efficiency.
In one embodiment, the second metal corresponding wavelength is that the refractive index of the light of 550nm meets：N2 (λ=550nm)
≤1.7.Bimetallic refractive index is lower relative to the first metal, to by the second metal mix into electron transfer layer it
Afterwards so that the refractive index in electron transfer layer is lower, projects, avoids close to normal (positive visual angle) direction to be more favorable for light
Visual angle color offset phenomenon under big visual angle.
Further, in a kind of specific embodiment, which can be alkaline-earth metal.The refraction of alkalinous metal
Rate is relatively low, and is easy to be doped with electron transfer layer.
Further, in a kind of more specific embodiment, the second metal is magnesium or calcium.The present embodiment is considering
After economy and practicability, preferentially the second metal is magnesium or calcium.After the magnesium incorporation electronic metal layer of appropriate concentration,
So that refractive index of the electron transfer layer under specific wavelength (550nm) can reach 1.0 or so, to be passed by electronics in light
When defeated layer, avoids projecting from big visual angle, effectively improve the colour cast under big visual angle.
In a kind of embodiment row, ranging from P2≤6% of volume accounting P2 of second metal in electron transfer layer.The
When the volume ratio of electron transfer layer shared by two metals is more than 6%, it is be easy to cause the concentration that local concentration is far longer than incorporation,
Lead to the generation of defect；When doping concentration is too low, the refractive index of electron transfer layer at a particular wavelength does not reach requirement, visual angle
The improvement unobvious of colour cast.Also, uniformity when being limited to technology controlling and process low concentration doping is difficult to ensure.Therefore, originally
Second metal volume ratio P2≤6% shared in electron transfer layer in embodiment.
Still by taking top emitting organic light emitting display panel as an example, as shown in fig. 7, it is had by what the embodiment of the present invention provided
Another structural schematic diagram of machine light emitting display panel, the organic light emitting display panel further include cap layer 15, and cap layer 15 is set
It sets on the side surface in second electrode 14 away from first electrode 12.Cap layer 15 in the present embodiment, on the one hand, to organic hair
The second electrode 14 of light display panel is protected, it is avoided to be aoxidized, and then protects organic luminescent device not oxidized；It is another
Aspect, since cap layer 15 has higher refractive index, it therefore reduces the reflection of the light sent out from luminescent layer 132, it will be more
Light close to normal or close to normal project, improve light extraction efficiency.
The present embodiment provides a kind of display devices, as shown in figure 8, its display device provided by the embodiment of the present invention
Structural schematic diagram, the display device 500 include the organic light emitting display panel 1 that the present embodiment is related to.Though it should be noted that
Right Fig. 8 with mobile phone as an example, still the display device is not limited to mobile phone, specifically, the display device may include but
It is not limited to personal computer (Personal Computer, PC), personal digital assistant (Personal Digital
Assistant, PDA), radio hand-held equipment, tablet computer (Tablet Computer), MP4 players or television set etc. it is any
Electronic equipment with display function.
The present embodiment, which includes above-mentioned organic light emitting display panel 1, therefore, in the display device 500
In, since the refractive index for being entrained in 131 first metal 1311 of electron transfer layer is low, so that the electron transfer layer 131 is being mixed
After miscellaneous first metal 1311, the refractive index of the light in 550nm is less than 1.9, to pass through electron-transport when the light projected
After layer 131, change original transmission path so that light is projected closer to normal direction, that is, at positive visual angle or
Low-angle close to positive visual angle projects, so cause to inject to from second electrode 14 (cathode) angle of the light in air compared with
It is small, it avoids and is projected under big visual angle, and then avoid the color offset phenomenon under big visual angle.The present embodiment compared with the existing technology and
, the color offset phenomenon under big visual angle can be effectively improved.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of organic light emitting display panel, which is characterized in that including：
Organic luminescent device, the organic luminescent device includes first electrode and second electrode, and is located at the first electrode
Organic function layer between the second electrode；
The organic function layer includes electron transfer layer, wherein
At least doped with the first metal in the electron transfer layer, first metal is alkaline-earth metal or rare earth metal, and
The electron transfer layer corresponding wavelength is that the refractive index of the light of 550nm meets：N1 (λ=550nm)≤1.9.
2. organic light emitting display panel according to claim 1, which is characterized in that first metal is passed in the electronics
Ranging from P1≤7% of volume accounting P1 in defeated layer.
3. organic light emitting display panel according to claim 1, which is characterized in that first metal is lanthanide series metal.
4. organic light emitting display panel according to claim 1, which is characterized in that first metal is ytterbium or samarium.
5. organic light emitting display panel according to claim 1, which is characterized in that the electron transfer layer further includes second
Metal, the bimetallic refractive index are less than the refractive index of first metal.
6. organic light emitting display panel according to claim 1, which is characterized in that the second metal corresponding wavelength is
The refractive index of the light of 550nm meets：N2 (λ=550nm)≤1.7.
7. organic light emitting display panel according to claim 1, which is characterized in that second metal is alkaline-earth metal.
8. organic light emitting display panel according to claim 1, which is characterized in that second metal is magnesium or calcium.
9. organic light emitting display panel according to claim 1, which is characterized in that second metal is passed in the electronics
Ranging from P2≤7% of volume accounting P2 in defeated layer.
10. a kind of display device, which is characterized in that including organic light emitting display panel described in any one of claim 1-9.
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| CN109962165A (en) * | 2017-12-22 | 2019-07-02 | 昆山国显光电有限公司 | A kind of organic electroluminescence device |
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| CN108539030B (en) | 2020-04-03 |
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