CN108666446A - Organic electroluminescence device and Organnic electroluminescent device - Google Patents
Organic electroluminescence device and Organnic electroluminescent device Download PDFInfo
- Publication number
- CN108666446A CN108666446A CN201810470062.7A CN201810470062A CN108666446A CN 108666446 A CN108666446 A CN 108666446A CN 201810470062 A CN201810470062 A CN 201810470062A CN 108666446 A CN108666446 A CN 108666446A
- Authority
- CN
- China
- Prior art keywords
- layer
- emitting diode
- light emitting
- organic light
- organic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- H10K50/852—Arrangements for extracting light from the devices comprising a resonant cavity structure, e.g. Bragg reflector pair
-
- 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
- H10K50/805—Electrodes
- H10K50/81—Anodes
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The present invention relates to display technology field, it includes the Organic Light Emitting Diode that emission wavelength is λ to disclose a kind of organic electroluminescence device and device, the device, and Organic Light Emitting Diode includes micro-cavity structure；Relationship between the microcavity light path L and emission wavelength λ of Organic Light Emitting Diode meets following relationship：L=n λ, wherein 577nm >=λ >=492nm；N >=3, n are positive integer；Organic Light Emitting Diode includes the first electrode layer being cascading, luminescent layer and the second electrode lay；First electrode layer includes the reflecting layer being stacked, light compensation layer and transparent anode layer, and transparent anode layer is arranged close to luminescent layer.The corresponding Organic Light Emitting Diode of green luminescence wavelength can realize 3 rank microcavitys or higher order microcavity, and thus effectively narrowed spectrum, improves gamut area.Solve limitation of traditional green device due to itself, it is difficult to as red device realizes the technical barrier of gamut extension as blue-light device.
Description
Technical field
The present invention relates to display technology fields, and in particular to a kind of organic electroluminescence device and organic electroluminescent dress
It sets.
Background technology
Display of organic electroluminescence (full name in English Organic Light Emitting Display, abbreviation OLED) is
Active luminous display unit since it has many advantages, such as that high contrast, wide viewing angle, low-power consumption, volume are thinner, and can pass through spray
Prepared by black printing technique and roll-to-roll (roll to roll) technique, it is easy to accomplish Flexible Displays are current flat panel displays
In attract attention most one of technologies.
With the continuous development of OLED technology, increasingly higher demands are proposed to display device performance.For example, improving color
Domain etc..So-called colour gamut is also to refer to the summation for the color that a technological system can generate to a kind of method that color is encoded.
Fig. 1 is NTSC (National Television Standards Committee (U.S.) National Television Standards Committee) systems
Fixed chromaticity coordinates figure, it can be seen from the figure that gamut area is bigger, the display color of display device is abundanter, and viewing experience is got over
It is good.
In order to adapt to the development trend in epoch, in the prior art generally by way of improving three primary colours excitation purity, improve
Gamut area.Specifically：The first, synthesis of narrow spectral luminescence material improves pixel light emission excitation purity using narrow spectral luminescence material；
The second, quantum dot is introduced, excitation purity is improved using the narrow spectral characteristic of quantum dot.
But above-mentioned solution all has respective defect, for example, in scheme one, luminous organic material design, synthesis
Heavy workload, low yield, it is also necessary to pass through a large amount of experimental verification, R＆D costs are high；In scheme two, the introducing of technology of quantum dots
Although colour gamut can be improved, it is substantially luminescence generated by light, not electroluminescent, and luminous efficiency is relatively low.
Invention content
For this purpose, the technical problem to be solved by the present invention is in the prior art, OLED device colour gamut is not high enough.
In order to solve the above technical problems, the technical solution adopted by the present invention is as follows：
According in a first aspect, an embodiment of the present invention provides a kind of organic electroluminescence device, including emission wavelength is λ's
Organic Light Emitting Diode, the Organic Light Emitting Diode have micro-cavity structure；
Relationship between the microcavity light path L and emission wavelength λ of the Organic Light Emitting Diode meets following relationship：
L=n λ
Wherein, 577nm >=λ >=492nm；N >=3, n are positive integer；
The Organic Light Emitting Diode includes the first electrode layer being cascading, luminescent layer and the second electrode lay；
The first electrode layer includes the reflecting layer being stacked, light compensation layer and transparent anode layer, and the transparent anode layer is close
The luminescent layer setting.
Optionally, the refractive index of the smooth compensation layer is not less than 1.8；The thickness of the smooth compensation layer is 100nm-200nm.
Optionally, the smooth compensation layer includes several hyaline layers being stacked.
Optionally, the thickness of each hyaline layer is not all the same；The refractive index of each hyaline layer is not all the same.
Optionally, the smooth compensation layer includes transparent bodies, and the transparent refractive member being arranged in the transparent bodies
Part.
Optionally, the transparent refractive element is polyhedron.
According to second aspect, an embodiment of the present invention provides a kind of Organnic electroluminescent devices, including the luminous wave of m kind differences
Long luminescence unit, the luminescence unit are monochromatic light Organic Light Emitting Diode or the white-light organic light-emitting two for being provided with optical filter
Pole pipe；
At least one Organic Light Emitting Diode has micro-cavity structure；
The Organic Light Emitting Diode includes the first electrode layer being stacked, luminescent layer and the second electrode lay；At least one
The first electrode layer in the Organic Light Emitting Diode of the kind with micro-cavity structure includes the reflecting layer being stacked, light benefit
Layer and transparent anode layer are repaid, the transparent anode layer is arranged close to the luminescent layer；
The microcavity light path L of the Organic Light Emitting Diode with micro-cavity structure shines with the corresponding luminescence unit
Relationship between wavelength X meets following relationship：
Li=niλi
Wherein, n >=2, n are positive integer, and the corresponding n of at least one Organic Light Emitting Diode is more than or equal to 3；m≥i≥
1, i, m is positive integer.
Optionally, the refractive index of the smooth compensation layer is not less than 1.8；The thickness of the smooth compensation layer is 100nm-200nm.
Optionally, the smooth compensation layer includes several hyaline layers being stacked；Or,
The smooth compensation layer includes transparent bodies, and the transparent refractive element being arranged in the transparent bodies.
Optionally, 3, λ m1＞ λ2＞ λ3；And n2＞ n1, n2＞ n3。
Technical scheme of the present invention has the following advantages that：
According in a first aspect, organic electroluminescence device provided in an embodiment of the present invention, Organic Light Emitting Diode have micro-
Cavity configuration, in the micro-cavity structure, when the wavelength of chamber length and light wave is in the same order of magnitude, the light of specific wavelength can be selected
And reinforcement, it realizes spectrum narrowing, that is, generates microcavity effect.Also, the microcavity light path L and emission wavelength λ of Organic Light Emitting Diode
Between relationship meet following relationship：L=n λ；Wherein, 577nm >=λ >=492nm；N >=3, n are positive integer.That is, with micro-
The microcavity light path L of the Organic Light Emitting Diode of cavity configuration is n times of its corresponding emission wavelength, i.e., in having with micro-cavity structure
N rank microcavity effects can be achieved in machine light emitting diode.In the present embodiment, the corresponding Organic Light Emitting Diode of green luminescence wavelength can
Realize 3 rank microcavitys or higher order microcavity, thus effectively narrowed spectrum, improves gamut area.Solves traditional green light device
Limitation of the part due to itself, it is difficult to as red device realizes the technical barrier of gamut extension as blue-light device.
In the present embodiment, first electrode layer includes the reflecting layer being stacked, light compensation layer and transparent anode layer, and first
Above-mentioned micro-cavity structure is formed between electrode layer and the second electrode lay, on the one hand the setting of light compensation layer and reflecting layer increases
The thickness of one electrode layer increases microcavity light path, and then enhances microcavity effect, and narrow spectrum, improves excitation purity and gamut area；
On the other hand, the setting in reflecting layer also enhances reflecting effect of the first electrode layer to light, further enhances microcavity effect.
The refractive index of organic electroluminescence device provided in an embodiment of the present invention, light compensation layer is not less than 1.8, thereby guarantees that
Light compensation layer has high refractive index, and then expands propagation path of the light in microcavity, further enhances microcavity effect, improves
Gamut area.When the thickness of light compensation layer is 100nm-200nm, while increasing microcavity light path, organic light emission also can guarantee
The higher luminous efficiency of diode.
Organic electroluminescence device provided in an embodiment of the present invention, light compensation layer include several hyaline layers being stacked,
As a result, in practical application, can be selected the number of hyaline layer and stacked combination sequence, flexibility strong according to actual demand.And
And the thickness of each hyaline layer is not all the same, refractive index is also not all the same, the final folding that different stacked combination modes is brought
It penetrates rate and thickness is also different, the refraction of entire light compensation layer is can adjust by adjusting the stacked combination mode of several hyaline layers
Rate and thickness, and then microcavity light path is adjusted, to achieve the purpose that adjust microcavity effect intensity.
Organic electroluminescence device provided in an embodiment of the present invention, light compensation layer may include transparent bodies, and setting
The light compensation layer of transparent refractive element in transparent bodies, the structure is compared to made of several hyaline layer stacked combinations
The structure of light compensation layer is simpler, and light can pass through from transparent bodies, and before light transmission, through saturating in transparent bodies
Bright refracting element reflects, and increases light path.
According to second aspect, Organnic electroluminescent device provided in an embodiment of the present invention, including m kind difference emission wavelengths
The light of luminescence unit, i.e. m kinds difference emission wavelength mixes, and realizes full-color display.Wherein, luminescence unit is with difference
The monochromatic light Organic Light Emitting Diode of emission wavelength or the white organic LED for being provided with optical filter, that is, can be more
Monochromatic light Organic Light Emitting Diode of the kind with different emission wavelengths is composed, and realizes full-color display；Can also be by multiple
White organic LED is composed, and the light of different wave length is filtered out through optical filter, is mixed into full-color display；Can also be by
The monochromatic light Organic Light Emitting Diode and white organic LED of different emission wavelengths collectively constitute full-color display.Therefore suitable
For different Organic Light Emitting Diodes, application range is wider.
First electrode layer includes the reflecting layer being stacked, light compensation layer and transparent anode layer, first electrode layer and
Micro-cavity structure is formed between two electrode layers.On the one hand the setting of light compensation layer and reflecting layer increases the thickness of first electrode layer,
Microcavity light path is increased, and then enhances microcavity effect, narrow spectrum, improves excitation purity and gamut area；On the other hand, reflecting layer
Setting also enhance reflecting effect of the first electrode layer to light, further enhance microcavity effect.
Each Organic Light Emitting Diode microcavity light path L and emission wavelength λ with micro-cavity structure meets following relationship：
Li=niλi
Wherein, n >=2, n are positive integer, and the corresponding n of at least one Organic Light Emitting Diode is more than or equal to 3；m≥i≥
1, i, m is positive integer.
That is, the microcavity light path L of the Organic Light Emitting Diode with micro-cavity structure is n times of its corresponding emission wavelength, i.e.,
N rank microcavity effects can be achieved in the Organic Light Emitting Diode with micro-cavity structure, and n is the positive integer more than or equal to 2, i.e.,
Second order microcavity, three rank microcavitys, quadravalence microcavity or higher order microcavity can be achieved, enhance microcavity effect, further narrowed spectrum,
And then improve gamut area.
Organnic electroluminescent device provided in an embodiment of the present invention, m 3, λ1＞ λ2＞ λ3；And n2＞ n1, n2＞ n3.I.e. should
Organnic electroluminescent device includes the Organic Light Emitting Diode of three kinds of emission wavelengths, and is had between three kinds of wavelength single
Property, such as λ1For red light wavelength, λ2For green wavelength, λ3For blue light wavelength, full-color display is realized by traditional three primary colours.Its
In, n2＞ n1, n2＞ n3, i.e., the intensity of the microcavity effect of the corresponding Organic Light Emitting Diode of green light is more than feux rouges and blue light corresponds to
Organic Light Emitting Diode microcavity effect intensity.This is because the chromaticity coordinates of corresponding Organic Light Emitting Diode of blue light itself
It is closer to the blue light chromaticity coordinates of high gamut standards, the corresponding Organic Light Emitting Diode of feux rouges can be by spectral red shift come real
The extension of existing colour gamut, and the corresponding Organic Light Emitting Diode of green light is due to the limitation of itself, it is difficult to as feux rouges and blue light correspond to
Organic Light Emitting Diode equally realize the extension of colour gamut, therefore the embodiment of the present invention is emphatically by the corresponding organic light emission of green light two
The microcavity effect of pole pipe enhances, and is matched with the high colour gamut of Organic Light Emitting Diode corresponding with feux rouges and blue light, realizes entire
The high colour gamut of Organnic electroluminescent device.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is existing NTSC color gamut figure；
Fig. 2 is a kind of structural schematic diagram of embodiment of organic electroluminescence device provided in an embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of embodiment of organic electroluminescence device provided in an embodiment of the present invention；
Fig. 4 is a kind of structural schematic diagram of embodiment of organic electroluminescence device provided in an embodiment of the present invention；
Fig. 5 is a kind of structural schematic diagram of embodiment of organic electroluminescence device provided in an embodiment of the present invention；
Fig. 6 is a kind of structural schematic diagram of embodiment of organic electroluminescence device provided in an embodiment of the present invention；
Fig. 7 is a kind of structural schematic diagram of embodiment of organic electroluminescence device provided in an embodiment of the present invention；
Fig. 8 is a kind of structural schematic diagram of embodiment of Organnic electroluminescent device provided in an embodiment of the present invention；
Fig. 9 is a kind of structural schematic diagram of embodiment of Organnic electroluminescent device provided in an embodiment of the present invention.
Reference numeral：
1- Organic Light Emitting Diodes；11- first electrode layers；The reflecting layer 111-；112- light compensation layers；1121- hyaline layers；
1122- transparent bodies；1123- transparent refractive elements；113- transparent anode layers；12- luminescent layers；13- the second electrode lays；14- light
Removing layer；15- carrier functional layers；151- hole injection layers；152- hole transmission layers；153- electronic barrier layers；The holes 154-
Barrier layer；155- electron transfer layers；156- electron injecting layers；16- optical filters.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " first ", " second " are used for description purposes only, and cannot
It is interpreted as indicating or implying relative importance.
As long as in addition, technical characteristic involved in invention described below different embodiments non-structure each other
It can be combined with each other at conflict.
According in a first aspect, an embodiment of the present invention provides a kind of organic electroluminescence device, including emission wavelength is λ's
Organic Light Emitting Diode 1, Organic Light Emitting Diode 1 have micro-cavity structure.Wherein, as shown in Fig. 2, organic hair in the present embodiment
Optical diode can be the monochromatic light Organic Light Emitting Diode that emission wavelength is λ；As shown in Figure 3, or light-emitting surface is arranged
There is the white organic LED of optical filter, the type of the wavelength selection optical filter of emergent light as needed is Red lightscreening plate
Or green light optical filter or blue filter.
Wherein, as shown in Figures 2 and 3, Organic Light Emitting Diode 1 includes the first electrode layer 11 being cascading, shines
Layer 12 and the second electrode lay 13.First electrode layer is generally reflection electrode layer, and the second electrode lay is generally half-reflection and half-transmission electrode
Layer.In the present embodiment, Organic Light Emitting Diode is formation microcavity knot between micro-cavity structure, i.e. first electrode layer and the second electrode lay
Structure.In the micro-cavity structure, when the wavelength of chamber length and light wave is in the same order of magnitude, the light of specific wavelength can be selected and be added
By force, it realizes spectrum narrowing, that is, generates microcavity effect.
In the present embodiment, the relationship between the microcavity light path L and emission wavelength λ of Organic Light Emitting Diode 1 meets with ShiShimonoseki
It is formula：
L=n λ
Wherein, 577nm >=λ >=492nm；N >=3, n are positive integer.
L is specifically referred to, and the light that luminescent layer is sent out is reflected by first electrode layer, is reflected, is returned to using the second electrode lay
It is equivalent caused by the distance and first electrode layer and the reflection phase shift of the second electrode lay that initial position is propagated during this
Distance.Wherein, the distance of propagation is generally the thickness of each layer that light is passed through and the sum of products of corresponding refractive index twice.
That is, the microcavity light path L of the Organic Light Emitting Diode with micro-cavity structure is n times of its corresponding emission wavelength, i.e.,
N rank microcavity effects can be achieved in the Organic Light Emitting Diode with micro-cavity structure.In the present embodiment, green luminescence wavelength corresponds to
Organic Light Emitting Diode can realize 3 rank microcavitys or higher order microcavity, thus effectively narrowed spectrum, improves gamut area.
Solve limitation of traditional green device due to itself, it is difficult to as red device realizes gamut extension as blue-light device
Technical barrier.
In the present embodiment, first electrode layer 11 includes reflecting layer 111, light compensation layer 112 and the transparent sun being stacked
Pole layer 113, transparent anode layer 113 is arranged close to luminescent layer 12.The setting of light compensation layer and reflecting layer, on the one hand increases first
The thickness of electrode layer increases microcavity light path, and then enhances microcavity effect, and narrow spectrum, improves excitation purity and gamut area；Separately
On the one hand, the setting in reflecting layer also enhances reflecting effect of the first electrode layer to light, further enhances microcavity effect.
As a kind of optional embodiment, the refractive index of light compensation layer 112 is not less than 1.8；The thickness of light compensation layer 112 is
100nm-200nm.It thereby guarantees that light compensation layer has high refractive index, and then expands propagation path of the light in microcavity, into one
Step enhancing microcavity effect, improves gamut area.When the thickness of light compensation layer is 100nm-200nm, increasing microcavity light path
Meanwhile it also can guarantee the higher luminous efficiency of Organic Light Emitting Diode.
As a kind of optional embodiment, light compensation layer 112 is selected from transparent conductive oxide, optionally there is ITO, IZO etc..
As a kind of optional embodiment, as shown in figure 4, light compensation layer 112 includes several hyaline layers being stacked
1121.The wherein quantity of hyaline layer and stacked combination sequence can be freely arranged according to actual conditions, and flexibility is strong.
As a kind of optional embodiment, the thickness of each hyaline layer 1121 is not all the same；The refractive index of each hyaline layer 1121
It is not all the same.The overall refractive index and thickness for the final light compensation layer that different stacked combination modes is brought also are different, real
If border in application, by adjusting the different hyaline layer of dry thickness and refractive index stacked combination mode, can adjust the compensation of entire light
The refractive index and thickness of layer, and then microcavity light path is adjusted, to achieve the purpose that adjust microcavity effect intensity.
As a kind of alternative embodiments, as shown in figure 5, light compensation layer 112 includes transparent bodies 1122, and setting
Transparent refractive element 1123 in transparent bodies 1122.The light compensation layer of the structure is compared to by several transparent layer stacked groups
The structure of light compensation layer made of conjunction is simpler, and light can pass through from transparent bodies, and before light transmission, through transparent
Transparent refractive element in body reflects, and increases light path.In the present embodiment, transparent refractive element is preferably polyhedron, by
This can enhance the refraction effect of light.
In the present embodiment, reflecting layer 111 can be the higher metal material layer of reflectivity, such as silver layer etc..
As a kind of optional embodiment, as shown in fig. 6, being also stacked light removing layer 14 on the second electrode lay 13.
The setting of light removing layer improves the utilization rate of light, improves the luminous efficiency of Organic Light Emitting Diode.
In the present embodiment, the thickness of light removing layer 14 is preferably 50-90nm；The refractive index of light removing layer 14 is more than 1.8；Light
Removing layer 14 is selected from the materials such as high-index material, such as NPB.
As a kind of optional embodiment, as shown in fig. 7, the organic electroluminescence device can also include being arranged first
Carrier functional layer 15 between electrode layer 11 and the second electrode lay 13, wherein carrier functional layer 15 includes hole injection layer
151, hole transmission layer 152, electronic barrier layer 153, hole blocking layer 154, electron transfer layer 155 and electron injecting layer 156
At least one of.As a result, while realizing raising gamut area, the efficiency of transmission of carrier is improved, and then improve
The luminous efficiency of Organic Light Emitting Diode.In addition, one or two layers or more layer, flexibility and choosing can be arranged according to actual demand
Selecting property is strong.
It should be noted that generally can be long further to adjust microcavity chamber by adjusting the thickness of hole transmission layer, this is
Since the size of the thickness of hole transmission layer is smaller on the influence of the electric property of Organic Light Emitting Diode, in adjustment microcavity intensity
Meanwhile also ensuring good electric property.
According to second aspect, the embodiment of the present invention additionally provides a kind of Organnic electroluminescent device, including m kind differences shine
The luminescence unit of wavelength, luminescence unit are monochromatic light Organic Light Emitting Diode 1 or the white-light organic light-emitting for being provided with optical filter 16
The type of diode 1, the wavelength selection optical filter of emergent light as needed is Red lightscreening plate or green light optical filter or blue light filter
Mating plate.
That is, the light of m kinds difference emission wavelength mixes in the Organnic electroluminescent device, full-color display is realized.Such as
Shown in Fig. 8, luminescence unit can be that a variety of monochromatic light Organic Light Emitting Diodes with different emission wavelengths are composed, and realize
Full-color display, as feux rouges Organic Light Emitting Diode, green light Organic Light Emitting Diode, blue light organic emissive diode combinations are realized entirely
Colour display screen shows；As shown in figure 9, can also be to be composed of multiple white organic LEDs, different waves are filtered out through optical filter
Long light is mixed into full-color display after such as filtering out feux rouges, green light, blue light；Can also be the monochromatic light by different emission wavelengths has
Machine light emitting diode and white organic LED collectively constitute full-color display.Therefore it is suitable for different organic light-emitting diodes
Pipe, application range are wider.
In the present embodiment, at least one Organic Light Emitting Diode 1 has micro-cavity structure.In the microcavity of Organic Light Emitting Diode
In, when the wavelength of chamber length and luminous wave is in the same order of magnitude, the light of specific wavelength can be selected and be reinforced, and realize that spectrum is narrow
Change, that is, generates microcavity effect.
Specifically, Organic Light Emitting Diode 1 includes first electrode layer 11, luminescent layer 12 and the second electrode lay being stacked
13.Wherein, first electrode layer is reflection electrode layer, and the second electrode lay is half-reflection and half-transmission electrode layer, first electrode layer and the second electricity
Micro-cavity structure is formed between the layer of pole.
In the present embodiment, the first electrode layer 11 at least one Organic Light Emitting Diode 1 with micro-cavity structure includes
Reflecting layer 111, light compensation layer 112 and the transparent anode layer 113 being stacked, transparent anode layer 113 are set close to luminescent layer 12
It sets.On the one hand the setting of light compensation layer and reflecting layer increases the thickness of first electrode layer, increase microcavity light path, Jin Erzeng
Strong microcavity effect, narrow spectrum, improves excitation purity and gamut area；On the other hand, the setting in reflecting layer also enhances the first electricity
Pole layer further enhances microcavity effect to the reflecting effect of light.
The microcavity light path L of Organic Light Emitting Diode 1 with micro-cavity structure and the emission wavelength λ of corresponding luminescence unit it
Between relationship meet following relationship：
Li=niλi
Wherein, n >=2, n are positive integer, the corresponding n of at least one Organic Light Emitting Diode be more than or equal to 3, m >=i >=
1, i, m is positive integer.
That is, the microcavity light path L of the Organic Light Emitting Diode with micro-cavity structure is n times of its corresponding emission wavelength, i.e.,
N rank microcavity effects can be achieved in the Organic Light Emitting Diode with micro-cavity structure, and n is the positive integer more than or equal to 2, i.e.,
Second order microcavity, three rank microcavitys, quadravalence microcavity or higher order microcavity can be achieved, enhance microcavity effect, further narrowed spectrum,
And then improve gamut area.
Preferably, niNot all the same, i.e., exponent number, that is, intensity of microcavity effect is not all the same in each Organic Light Emitting Diode, i.e.,
The exponent number of different microcavity effects can be set according to the attribute (such as wavelength, spectrum etc.) of different emergent lights, and then realized most
Good spectrum narrowing effect and best gamut area.
Preferably, 3, λ m1＞ λ2＞ λ3；And n2＞ n1, n2＞ n3。
I.e. the Organnic electroluminescent device includes the Organic Light Emitting Diode of three kinds of emission wavelengths, and three kinds of wavelength it
Between there is unicity, such as λ1For red light wavelength, λ2For green wavelength, λ3For blue light wavelength, realized by traditional three primary colours complete
Colour display screen shows.Wherein, n2＞ n1, n2＞ n3, i.e., the intensity of the microcavity effect of the corresponding Organic Light Emitting Diode of green light be more than feux rouges and
The intensity of the microcavity effect of the corresponding Organic Light Emitting Diode of blue light.This is because the chromaticity coordinates of blue-light device itself and high colour gamut
The blue light chromaticity coordinates of standard is closer to, and red device can realize the extension of colour gamut by spectral red shift, and green device
Due to the limitation of itself, it is difficult to as red device realizes the extension of colour gamut, therefore the embodiment of the present invention as blue-light device
The microcavity effect of green device is enhanced emphatically, is matched with the high colour gamut with red device and blue-light device, realization entirely has
The high colour gamut of organic electro luminescent device.
As a kind of optional embodiment, the refractive index of light compensation layer 112 is not less than 1.8；The thickness of light compensation layer 112 is
100nm-200nm；Light compensation layer 112 is selected from the materials such as ITO, IZO.
As a kind of optional embodiment, light compensation layer 112 includes several hyaline layers 1121 being stacked；Or light compensation
Layer 112 includes transparent bodies 1122, and the transparent refractive element 1123 being arranged in transparent bodies 1122.It is compensated about light
Layer has been described in the organic electroluminescence device that first aspect present invention provides, and details are not described herein.
Embodiment 1
Present embodiments provide a kind of specific example of Organnic electroluminescent device.Organic electroluminescent in the present embodiment
Device includes the monochromatic light Organic Light Emitting Diode of 3 kinds of emission wavelengths, is feux rouges Organic Light Emitting Diode, the organic hair of green light respectively
Optical diode and blue light organic emissive diode.Wherein, three kinds of Organic Light Emitting Diodes all have micro-cavity structure.
Each Organic Light Emitting Diode includes the first electrode layer being stacked, luminescent layer and the second electrode lay.Wherein, green
First electrode layer in light Organic Light Emitting Diode includes the reflecting layer being stacked, light compensation layer and transparent anode layer, thoroughly
Bright anode layer is arranged close to luminescent layer.
In the present embodiment, the refractive index of light compensation layer is 2.1, thickness 142nm, material IZO.
Also, in the present embodiment, it is provided with light removing layer on the second electrode layer, the refractive index of light removing layer is 2.0, thick
Degree is 60nm, material NPB.
In the present embodiment, the corresponding λ of feux rouges Organic Light Emitting Diode1=630nm, n1=2, L1=1260nm；
The corresponding λ of green light Organic Light Emitting Diode2=522nm, n2=3, L2=1566nm；
The corresponding λ of blue light organic emissive diode3=456nm, n3=2, L3=912nm.
The device architecture of feux rouges Organic Light Emitting Diode is Ag (120nm)/ITO (10nm)/CuPc in the present embodiment
(115nm)/TPD(80nm)/CBP:Ir(piq)3(15%) (50nm)/Alq3(35nm)/Mg(1.6nm):Ag(0.4nm)/Ag
(20)/NPB(60nm)；
The device architecture of green light Organic Light Emitting Diode is Ag (120nm)/IZO (142nm)/ITO in the present embodiment
(10nm)/CuPc(115nm)/TPD(35nm)/TCTA：Ir(ppy)3(10%) (45nm)/Alq3(35nm)/Mg(1.6nm):Ag
(0.4nm)/Ag(20)/NPB(60nm)；
The device architecture of blue light organic emissive diode is Ag (120nm)/ITO (10nm)/CuPc in the present embodiment
(80nm)/TPD(35nm)/CBP：FIrpic (8%) (45nm)/Alq3(35nm)/Mg(1.6nm):Ag(0.4nm)/Ag(20)/
NPB(60nm)。
Embodiment 2
An embodiment of the present invention provides a kind of specific examples of Organnic electroluminescent device.Its structure is with embodiment 1, with reality
Apply example 1 offer Organnic electroluminescent device difference lies in：
In the present embodiment, the refractive index of light compensation layer is 1.9, thickness 150nm, material ITO.
Embodiment 3
An embodiment of the present invention provides a kind of specific examples of Organnic electroluminescent device.Its structure is with embodiment 1, with reality
Apply example 1 offer Organnic electroluminescent device difference lies in：
In the present embodiment, the refractive index of light compensation layer is 2.0, thickness 150nm, material IGZO.
Embodiment 4
An embodiment of the present invention provides a kind of specific examples of Organnic electroluminescent device.Its structure is with embodiment 1, with reality
Apply Organnic electroluminescent device that 1-3 is provided difference lies in：
In the present embodiment, the corresponding λ of feux rouges Organic Light Emitting Diode1=630nm, n1=3, L1=1890nm；
The corresponding λ of green light Organic Light Emitting Diode2=522nm, n2=4, L2=2080nm；
The corresponding λ of blue light organic emissive diode3=456nm, n3=2, L3=912nm.
The device architecture of feux rouges Organic Light Emitting Diode is Ag (120nm)/IZO (100nm) ITO in the present embodiment
(10nm)/CuPc(115nm)/TPD(80nm)/CBP:Ir(piq)3(15%) (50nm)/Alq3(35nm)Mg(1.6nm):Ag
(0.4nm)/Ag(20)/NPB(60nm)；
The device architecture of green light Organic Light Emitting Diode is Ag (120nm)/IZO (200nm)/ITO in the present embodiment
(10nm)/CuPc(115nm)/TPD(35nm)/TCTA：Ir(ppy)3(10%) (45nm)/Alq3(35nm)/Mg(1.6nm):Ag
(0.4nm)/Ag(20)/NPB(60nm)；
The device architecture of blue light organic emissive diode is Ag (120nm)/ITO (10nm)/CuPc in the present embodiment
(80nm)/TPD(35nm)/CBP：FIrpic (8%) (45nm)/Alq3(35nm)/Mg(1.6nm):Ag(0.4nm)/Ag(20)/
NPB(60nm)。
Embodiment 5
An embodiment of the present invention provides a kind of specific examples of Organnic electroluminescent device.Device architecture is same
Embodiment 1.With embodiment 1 provide Organnic electroluminescent device difference lies in：
Organnic electroluminescent device in the present embodiment is made of white organic LED, two pole of white-light organic light-emitting
Feux rouges optical filter, green light optical filter and blue filter are respectively set on the light-emitting surface of pipe.
In the present embodiment, emission wavelength is the device architecture of the white organic LED corresponding to feux rouges and blue light
For：
Ag(120nm)/ITO(10nm)/HAT-CN(5nm)/NPB(30nm)/MADN(30nm):DAS-
Ph (5%)/Bhpen (10nm):Li (2%)/HAT-CN (10nm)/NPB (30nm)/CBP (30nm):Ir(ppy)3
(15%):Ir(piq)3(0.5%)/LiF (0.5nm)/Al (150nm)；
Emission wavelength is provided with light compensation layer in the first electrode layer for the white organic LED corresponding to green light,
Its refractive index, thickness and material are the same as embodiment 1.
The wavelength of feux rouges optical filter, green light optical filter and blue filter is respectively：630nm, 522nm and 456nm.
Embodiment 6
An embodiment of the present invention provides a kind of specific examples of Organnic electroluminescent device.Device architecture is same
Embodiment 1.With embodiment 1 provide Organnic electroluminescent device difference lies in：
Light compensation layer includes three layers of hyaline layer being stacked, wherein the material of first layer hyaline layer is IZO, and thickness is
45nm, refractive index 2.1；The material of second layer hyaline layer is ITO, thickness 60nm, refractive index 1.9；Third layer hyaline layer
Material be IGZO, thickness 40nm, refractive index 2.0.
Embodiment 7
An embodiment of the present invention provides a kind of specific examples of Organnic electroluminescent device.Device architecture is the same as embodiment 1.With
Embodiment 1 provide Organnic electroluminescent device difference lies in：
The material of first layer hyaline layer is IZO, thickness 50nm, refractive index 1.8；The material of second layer hyaline layer is
ITO, thickness 40nm, refractive index 1.9；The material of third layer hyaline layer is IZO, thickness 60nm, refractive index 2.0.
Embodiment 8
An embodiment of the present invention provides a kind of specific examples of Organnic electroluminescent device.Device architecture is the same as embodiment 1.With
Embodiment 1 provide Organnic electroluminescent device difference lies in：
Feux rouges and blue light organic emissive diode do not have micro-cavity structure.
Comparative example 1
This comparative example provides a kind of Organnic electroluminescent device, and structure provides organic with embodiment 1 with embodiment 1
El light emitting device difference lies in：Light compensation layer is not provided in first electrode layer in green light Organic Light Emitting Diode, at this point,
n2=2.
Comparative example 2
This comparative example provides a kind of Organnic electroluminescent device, and structure provides organic with embodiment 1 with embodiment 1
El light emitting device difference lies in：The refractive index of light compensation layer is 1.7, thickness 90nm, at this point, n2=2.
The performance of above-mentioned device is tested, test result is as follows shown in table：
In above-described embodiment 1-5, light compensation layer is provided in the first electrode layer of green light Organic Light Emitting Diode, and promoted
Microcavity exponent number is to 3 ranks or higher in green light Organic Light Emitting Diode；First electricity of green light Organic Light Emitting Diode in comparative example 1
Light compensation layer (being existing structure) is not provided in the layer of pole, microcavity exponent number is 2 ranks.By the above-mentioned survey of embodiment 1-5 and comparative example 1
Examination data compare, it is possible to find, the gamut area of the Organnic electroluminescent device provided in embodiment 1-5 is far longer than on the whole
The gamut area for the Organnic electroluminescent device that comparative example 1 provides.
In addition, in the Organnic electroluminescent device that comparative example 2 provides, although being also provided in green light Organic Light Emitting Diode
There is light compensation layer, but the refractive index of light compensation layer is 1.7, thickness 90nm, the microcavity exponent number of green light Organic Light Emitting Diode
And not up to three ranks.Comparative example 2 is compared with the test data of embodiment 1-5, it is possible to find the organic electroluminescence that comparative example 2 provides
The gamut area of light-emitting device is slightly above the gamut area of the Organnic electroluminescent device of the offer of comparative example 1, but is still much smaller than
The gamut area of the Organnic electroluminescent device provided in embodiment 1-5.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (10)
1. a kind of organic electroluminescence device, which is characterized in that described including the Organic Light Emitting Diode (1) that emission wavelength is λ
Organic Light Emitting Diode (1) has micro-cavity structure；
Relationship between the microcavity light path L and emission wavelength λ of the Organic Light Emitting Diode (1) meets following relationship：
L=n λ
Wherein, 577nm >=λ >=492nm；N >=3, n are positive integer；
The Organic Light Emitting Diode (1) includes the first electrode layer (11) being stacked, luminescent layer (12) and second electrode
Layer (13)；The first electrode layer (11) includes the reflecting layer (111) being stacked, light compensation layer (112) and transparent anode
Layer (113), the transparent anode layer (113) are arranged close to the luminescent layer (12).
2. organic electroluminescence device according to claim 1, which is characterized in that the refraction of the smooth compensation layer (112)
Rate is not less than 1.8；The thickness of the smooth compensation layer (112) is 100nm-200nm.
3. organic electroluminescence device according to claim 1 or 2, which is characterized in that the smooth compensation layer (112) includes
Several hyaline layers (1121) being stacked.
4. according to claim 1-3 any one of them organic electroluminescence devices, which is characterized in that each hyaline layer
(1121) thickness is not all the same；The refractive index of each hyaline layer (1121) is not all the same.
5. according to claim 1-4 any one of them organic electroluminescence devices, which is characterized in that the smooth compensation layer
(112) include transparent bodies (1122), and the transparent refractive element (1123) being arranged in the transparent bodies (1122).
6. organic electroluminescence device according to claim 5, which is characterized in that the transparent refractive element (1123) is
Polyhedron.
7. a kind of Organnic electroluminescent device, which is characterized in that include the luminescence unit of m kind difference emission wavelengths, it is described to shine
Unit is monochromatic light Organic Light Emitting Diode (1) or the white organic LED (1) for being provided with optical filter (16)；
At least one Organic Light Emitting Diode (1) has micro-cavity structure；
The Organic Light Emitting Diode (1) includes the first electrode layer (11) being stacked, luminescent layer (12) and the second electrode lay
(13)；The first electrode layer (11) at least one Organic Light Emitting Diode (1) with micro-cavity structure includes layer
Reflecting layer (111), light compensation layer (112) and the transparent anode layer (113) of folded setting, the transparent anode layer (113) are close
Luminescent layer (12) setting；
The microcavity light path L of the Organic Light Emitting Diode (1) with micro-cavity structure shines with the corresponding luminescence unit
Relationship between wavelength X meets following relationship：
Li=niλi
Wherein, n >=2, n are positive integer, and the corresponding n of at least one Organic Light Emitting Diode is more than or equal to 3；M >=i >=1, i,
M is positive integer.
8. Organnic electroluminescent device according to claim 7, which is characterized in that the refraction of the smooth compensation layer (112)
Rate is not less than 1.8；The thickness of the smooth compensation layer (112) is 100nm-200nm.
9. Organnic electroluminescent device according to claim 7 or 8, which is characterized in that the smooth compensation layer (112) includes
Several hyaline layers (1121) being stacked；And/or
The smooth compensation layer (112) includes transparent bodies (1122), and setting is transparent in the transparent bodies (1122)
Refracting element (1123).
10. according to claim 7-9 any one of them Organnic electroluminescent devices, which is characterized in that m 3, λ1＞ λ2＞ λ3；
And n2＞ n1, n2＞ n3。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810470062.7A CN108666446A (en) | 2018-05-16 | 2018-05-16 | Organic electroluminescence device and Organnic electroluminescent device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810470062.7A CN108666446A (en) | 2018-05-16 | 2018-05-16 | Organic electroluminescence device and Organnic electroluminescent device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108666446A true CN108666446A (en) | 2018-10-16 |
Family
ID=63779906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810470062.7A Pending CN108666446A (en) | 2018-05-16 | 2018-05-16 | Organic electroluminescence device and Organnic electroluminescent device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108666446A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110335884A (en) * | 2019-04-29 | 2019-10-15 | 昆山国显光电有限公司 | Display panel, display device and display panel processing method |
| CN111584597A (en) * | 2020-05-26 | 2020-08-25 | 云谷（固安）科技有限公司 | Display panel and display device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1604703A (en) * | 2003-09-30 | 2005-04-06 | 三洋电机株式会社 | Organic EL display panel |
| US20090115706A1 (en) * | 2007-11-05 | 2009-05-07 | Samsung Electronics Co., Ltd. | Organic light emitting diode display and method for manufacturing the same |
| CN100524890C (en) * | 2005-03-21 | 2009-08-05 | 友达光电股份有限公司 | Organic electroluminescent element, panel display and portable electronic device |
| US20120273822A1 (en) * | 2011-04-29 | 2012-11-01 | Semiconductor Energy Laboratory Co., Ltd. | Light-Emitting Element, Light-Emitting Device, and Lighting Device |
| CN103000638A (en) * | 2012-12-12 | 2013-03-27 | 京东方科技集团股份有限公司 | Array substrate, preparation method of array substrate and organic light-emitting diode display device |
| CN104717773A (en) * | 2015-03-30 | 2015-06-17 | 昆山工研院新型平板显示技术中心有限公司 | Organic electroluminescence device with four-color sub pixels and manufacturing method thereof |
-
2018
- 2018-05-16 CN CN201810470062.7A patent/CN108666446A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1604703A (en) * | 2003-09-30 | 2005-04-06 | 三洋电机株式会社 | Organic EL display panel |
| CN100524890C (en) * | 2005-03-21 | 2009-08-05 | 友达光电股份有限公司 | Organic electroluminescent element, panel display and portable electronic device |
| US20090115706A1 (en) * | 2007-11-05 | 2009-05-07 | Samsung Electronics Co., Ltd. | Organic light emitting diode display and method for manufacturing the same |
| US20120273822A1 (en) * | 2011-04-29 | 2012-11-01 | Semiconductor Energy Laboratory Co., Ltd. | Light-Emitting Element, Light-Emitting Device, and Lighting Device |
| CN103000638A (en) * | 2012-12-12 | 2013-03-27 | 京东方科技集团股份有限公司 | Array substrate, preparation method of array substrate and organic light-emitting diode display device |
| CN104717773A (en) * | 2015-03-30 | 2015-06-17 | 昆山工研院新型平板显示技术中心有限公司 | Organic electroluminescence device with four-color sub pixels and manufacturing method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110335884A (en) * | 2019-04-29 | 2019-10-15 | 昆山国显光电有限公司 | Display panel, display device and display panel processing method |
| CN110335884B (en) * | 2019-04-29 | 2021-09-28 | 昆山国显光电有限公司 | Display panel, display device and display panel processing method |
| CN111584597A (en) * | 2020-05-26 | 2020-08-25 | 云谷（固安）科技有限公司 | Display panel and display device |
| CN111584597B (en) * | 2020-05-26 | 2021-10-15 | 云谷（固安）科技有限公司 | Display panel and display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100555709C (en) | The organic luminescent device and the manufacture method thereof that comprise dielectric capping layers | |
| CN103219355B (en) | Organic light-emitting display device | |
| CN102097455B (en) | Oled device | |
| CN208489238U (en) | Organnic electroluminescent device | |
| CN103700776B (en) | A kind of organic light emitting display | |
| TWI699022B (en) | Light-emitting device, display apparatus, and illumination apparatus | |
| CN108029162B (en) | Organnic electroluminescent device, lighting device and display device | |
| WO2014041743A1 (en) | Display unit, method of manufacturing the same, and electronic apparatus | |
| US8033675B2 (en) | Light emitting device and electronic device | |
| CN106717121B (en) | The manufacturing method of Organnic electroluminescent device and Organnic electroluminescent device | |
| CN102195001A (en) | Light-emitting device, illumination apparatus, and display apparatus | |
| CN103579529B (en) | Organic light emitting diode device | |
| CN103022075A (en) | Display device | |
| CN104752623A (en) | Organic electroluminescent device and organic electroluminescent display device | |
| CN102163694A (en) | Light-emitting apparatus, illumination apparatus, and display apparatus | |
| CN102683612A (en) | Light emitting device, illumination apparatus and display apparatus | |
| CN102157701A (en) | Light-emitting device, illumination apparatus, and display apparatus | |
| CN105826354A (en) | Array substrate, display panel and display device | |
| CN107275501A (en) | Organic light-emitting structure, display device and mobile terminal | |
| CN108511618A (en) | Organnic electroluminescent device | |
| CN108666446A (en) | Organic electroluminescence device and Organnic electroluminescent device | |
| CN108511617B (en) | Organic electroluminescent device | |
| CN108511628A (en) | Organnic electroluminescent device | |
| CN108666445A (en) | Organic electroluminescence device and Organnic electroluminescent device | |
| CN108666433A (en) | Organnic electroluminescent device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181016 |