CN207441755U - Organic light emitting diode device and display panel - Google Patents
Organic light emitting diode device and display panel Download PDFInfo
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- CN207441755U CN207441755U CN201721717190.4U CN201721717190U CN207441755U CN 207441755 U CN207441755 U CN 207441755U CN 201721717190 U CN201721717190 U CN 201721717190U CN 207441755 U CN207441755 U CN 207441755U
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Abstract
A kind of organic light emitting diode device and display panel, the organic light emitting diode device include：Multiple pixels, each pixel include at least two sub-pixels for generating different colours light, and the sub-pixel includes the luminescent layer between first electrode, second electrode and the first electrode and the second electrode；The sub-pixel is additionally included in the first electrode and the microcavity regulating course for including hole is formed away from the luminescent layer one side, and the porosity of the hole of the microcavity regulating course of the sub-pixel for generating different colours light is different with average pore size.The average pore size of hole is different with porosity in microcavity regulating course in the sub-pixel for the generation different colours light that the organic light emitting diode device includes, organic light emitting diode device is allowd to adjust the microcavity effect of organic light emitting diode device by microcavity regulating course, and then adjusts the color saturation of organic light emitting diode device.
Description
Technical field
Embodiment of the disclosure is related to a kind of organic light emitting diode device and display panel.
Background technology
Organic Light Emitting Diode has self-luminous, visual angle is wide, colour gamut is wide, reaction speed is fast, luminous efficiency is high, operating voltage
Low characteristic is widely used in the fields such as display panel.In Organic Light Emitting Diode, microcavity effect refers to when organic light emission two
When the luminous zone of pole pipe is located in the resonator that a total reflection film and semi-reflective film are formed, the wavelength for the light that luminous zone is sent with
The chamber of resonator is grown in the same order of magnitude, and the light of the specific wavelength can be selected and strengthened.
The content of the invention
A disclosure at least embodiment provides a kind of organic light emitting diode device, including：Multiple pixels, each pixel bag
The sub-pixel of at least two generation different colours light is included, the sub-pixel includes first electrode, second electrode and first electricity
Luminescent layer between pole and the second electrode；The sub-pixel is further included positioned at the first electrode away from the luminescent layer one
The microcavity regulating course including hole of side, the porosity of the hole of the microcavity regulating course of the sub-pixel for generating different colours light
It is different with average pore size.
For example, in the organic light emitting diode device that a disclosure at least embodiment provides, the Organic Light Emitting Diode
Device is top emission type organic light emitting diode device, and the first electrode is with respect to second electrode away from the organic light-emitting diodes
The light emission side of tube device.
For example, in the organic light emitting diode device that a disclosure at least embodiment provides, the first electrode is with respect to institute
Light emission side of the second electrode close to the Organic Light Emitting Diode is stated, the microcavity regulating course is located at the first electrode away from institute
The one side of luminescent layer is stated, and the optical index of the microcavity regulating course is 1.1-1.7.
For example, in the organic light emitting diode device that a disclosure at least embodiment provides, described at least two generate not
Sub-pixel with color of light includes the first sub-pixel and the second sub-pixel, and the wavelength that first sub-pixel sends light is more than in institute
The wavelength that the second sub-pixel sends light is stated, the average pore size for the hole that microcavity regulating course includes is big described in first sub-pixel
The average pore size for the hole that microcavity regulating course includes described in second sub-pixel.
For example, in the organic light emitting diode device that a disclosure at least embodiment provides, first sub-pixel is sent
The wavelength of light is more than the wavelength that light is sent in second sub-pixel, the hole of microcavity regulating course described in first sub-pixel
Rate is less than the porosity of microcavity regulating course described in second sub-pixel.
For example, in the organic light emitting diode device that a disclosure at least embodiment provides, described at least two generate not
Sub-pixel with color of light includes three sub-pixels, and three sons are as including red sub-pixel, green sub-pixels and blueness
Pixel, the hole that microcavity regulating course described in the red sub-pixel, green sub-pixels and blue subpixels includes are put down
Equal aperture is sequentially reduced, and the hole of microcavity regulating course described in the red sub-pixel, green sub-pixels and blue subpixels
Rate successively increases.
For example, in the organic light emitting diode device that a disclosure at least embodiment provides, institute in the red sub-pixel
The mean pore size for stating the hole that microcavity regulating course includes is 700nm-1000nm；It is micro- described in the green sub-pixels
The mean pore size for the hole that intonation ganglionic layer includes is 300nm-700nm；Microcavity tune described in the blue subpixels
The mean pore size for the hole that ganglionic layer includes is 100nm-300nm.
For example, in the organic light emitting diode device that a disclosure at least embodiment provides, the material of the microcavity regulating course
Material includes one or both of polystyrene, polymethyl methacrylate, polyvinylpyrrolidone and polyimide.
A disclosure at least embodiment provides a kind of display panel, and the display panel includes any of the above-described described organic
LED device.
In the organic light emitting diode device for the microcavity regulating course including hole that the embodiment of the present disclosure provides, different sub- pictures
The mean pore size and porosity of hole in element included by microcavity regulating course can be adjusted, and then can adjust organic hair
The microcavity effect that optical diode device different subpixel generates is finally reached and adjusts organic light emitting diode device different subpixel
The technique effect of the color saturation of the different colours light sent.
Description of the drawings
In order to illustrate more clearly of the technical solution of the embodiment of the present disclosure, will simply be situated between to the attached drawing of embodiment below
It continues, it should be apparent that, the accompanying drawings in the following description merely relates to some embodiments of the present disclosure rather than the limitation to the disclosure.
Figure 1A and 1B is the schematic diagram one for the organic light emitting diode device that one embodiment of the disclosure provides；
Fig. 2A and 2B is the schematic diagram two for the organic light emitting diode device that one embodiment of the disclosure provides；
Fig. 3 is the preparation flow figure for the microcavity regulating course that one embodiment of the disclosure provides；
Fig. 4 A-4D are the preparation process schematic diagram for the microcavity regulating course that one embodiment of the disclosure provides；
Fig. 5 A and 5B are the schematic diagram three for the organic light emitting diode device that one embodiment of the disclosure provides；
Fig. 6 A and 6B are the schematic diagram four for the organic light emitting diode device that one embodiment of the disclosure provides.
Reference numeral：
101- first electrodes；102- second electrodes；103- luminescent layers；104- microcavity regulating courses；107- hole injection layers/sky
Cave transport layer；108- electron injecting layers/electron transfer layer；201- first electrodes；202- second electrodes；203- luminescent layers；204-
Microcavity regulating course；205- underlay substrates；206- thin film transistor (TFT)s；207- hole transmission layers/hole injection layer；208- electron-transports
Layer/electron injecting layer.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present disclosure clearer, below in conjunction with the embodiment of the present disclosure
Attached drawing, the technical solution of the embodiment of the present disclosure is clearly and completely described.Obviously, described embodiment is this public affairs
The part of the embodiment opened, instead of all the embodiments.Based on described embodiment of the disclosure, ordinary skill
Personnel's all other embodiments obtained on the premise of without creative work belong to the scope of disclosure protection.
Unless otherwise defined, the technical term or scientific terminology that the disclosure uses should be tool in disclosure fields
The ordinary meaning that the personage for having general technical ability is understood." first ", " second " and the similar word used in the disclosure is simultaneously
It does not indicate that any order, quantity or importance, and is used only to distinguish different components." comprising " or "comprising" etc.
Either object covers the element or object for appearing in the word presented hereinafter to the element that similar word means to occur before the word
And its it is equivalent, and it is not excluded for other elements or object.The similar word such as " connection " or " connected " is not limited to physics
Or mechanical connection, but can include electrical connection, either directly or indirectly." on ", " under ",
"left", "right" etc. is only used for representing relative position relation, and after the absolute position for being described object changes, then the relative position is closed
System may also correspondingly change.
Microcavity effect refers to be located in a resonator when the luminous zone of device, and the chamber length of the resonator shines with this
In the same order of magnitude, the light of the wavelength can be selected and strengthened the wavelength for the light that area is sent, and be narrowed so as to spectrum
Phenomenon.The disclosed invention people has found under study for action, the color saturation of Organic Light Emitting Diode often influenced by microcavity effect and
It is relatively low.
A disclosure at least embodiment provides a kind of organic light emitting diode device, including：Multiple pixels, each pixel bag
The sub-pixel of at least two generation different colours light is included, sub-pixel includes first electrode, second electrode and first electrode and second
Luminescent layer between electrode；Sub-pixel is additionally included in first electrode and the microcavity adjusting for including hole is formed away from luminescent layer one side
Layer, the porosity for generating the hole of the microcavity regulating course of the sub-pixel of different colours light are different with average pore size.
A disclosure at least embodiment provides a kind of display panel, which includes any of the above-described organic light-emitting diodes
Tube device.
The organic light emitting diode device and display panel of the disclosure are said below by several specific embodiments
It is bright.
Embodiment one
The present embodiment provides a kind of manufacturing methods of organic light emitting diode device, as shown in Figure 1A-Fig. 2 B, organic hair
The manufacturing method of optical diode device includes：Multiple pixels are formed, each pixel includes at least two and generates different colours light
Sub-pixel, sub-pixel include shining between first electrode 101, second electrode 102 and first electrode 101 and second electrode 102
Layer 103；The one side that the manufacturing method is additionally included in the separate luminescent layer 103 of first electrode 101 forms the microcavity tune for including hole
Ganglionic layer 104 generates the porosity of hole of microcavity regulating course and average pore size difference in the sub-pixel of different colours light.
For example, Organic Light Emitting Diode includes the first sub-pixel and the second sub-pixel, for example, can in first electrode 101 or
One side of the second electrode 102 away from luminescent layer 103 forms the microcavity regulating course for including hole, and the microcavity in the first sub-pixel
It the porosity of hole and average pore size and the porosity of hole in the microcavity regulating course in the second sub-pixel and is averaged in regulating course
Aperture is different.
In the present embodiment, as shown in Figure 1A, microcavity regulating course 104 can be formed in first electrode 101 away from luminescent layer 103
One side or as shown in Figure 1B, microcavity regulating course 104 can be formed in one side of the second electrode 102 away from luminescent layer 103.
Or the position of first electrode 101 and second electrode 102 can exchange, i.e., as Fig. 2A and Fig. 2 B situation, the present embodiment pair
The specific forming position of first electrode 101 and second electrode 102 does not limit.
In at least some examples of the present embodiment, as shown in Figure 1A-Fig. 2 B, first electrode 101 and luminescent layer 103 it
Between can also further provide for the functional layers such as hole injection layer, hole transmission layer at 107；In second electrode 102 and luminescent layer
It is that can also further provide for the functional layers such as electron injecting layer, electron transfer layer at 108 between 103.
In the present embodiment, first electrode can be for example anode, and second electrode for example can be cathode；Alternatively, the first electricity
Pole for example can be cathode, and second electrode for example can be anode, and the present embodiment does not limit this.
In the present embodiment, the microcavity regulating course 104 formed in the different subpixel of organic light emitting diode device includes
Hole average pore size and porosity it is different.Such as in the case of shown in Figure 1A, organic light emitting diode device is shown
Three different sub-pixels, and the hole that includes of the microcavity regulating course 104 that is formed in three different sub-pixels is flat
Equal aperture and porosity are different.
In the present embodiment, as shown in figure 3, step S101- steps S103 can for example be included by forming microcavity regulating course.
Step S101：First polymer material and second polymer material are mixed with cosolvent.
In the present embodiment, polymer material for example may be employed to prepare in microcavity regulating course 104.The polymer material is at least
Two kinds are chosen, such as selects first polymer material and second polymer material.By first polymer material and second polymer
Material is mixed to form mixture with cosolvent, and wherein solubility of the first polymer material in cosolvent is more than second polymer
Solubility of the material in cosolvent.
Step S102：Film process.
The mixture obtained in step S101 is subjected to film process to form blend films in substrate, for example, this into
Film process includes first and heats.
In the present embodiment, as shown in Figure 4 A, such as by first polymer material, second polymer material and cosolvent mixing
And dissolve to form mixed solution, is then formed using spin-coating method in substrate mixed solution layer or can also use scratch,
The methods of curtain coating.For example, the substrate for example can be the underlay substrate for foring transistor and driving unit.The present embodiment
In, for example, can use sol evenning machine with certain rotating speed by above-mentioned mixed solution spin coating at the desired position, such as set this even
The rotating speed of glue machine is about 1000rpm-3000rpm, such as 1500rpm or 2000rpm.
For example, mixed solution layer can carry out it the first heating after being formed, the first heating can make mixing
Cosolvent volatilization in solution layer, during cosolvent volatilizees, the smaller second polymer material of solubility in cosolvent
Material is easier to be precipitated and reunite, and the second polymer material being finally precipitated forms continuous film structure；And it is dissolved in cosolvent
Larger first polymer material is spent due to more soluble in cosolvent therefore be uniformly dispersed, so as to the process of cosolvent volatilization
Middle first polymer material is precipitated later in blend films and is precipitated that position is more dispersed, therefore the first polymerization being finally precipitated
Object material is scattered in graininess in the continuous film structure of second polymer material formation.During cosolvent volatilizees,
The increase of the first polymer particle of precipitation at any time is easily formed reunion and increases particle, while quantity tails off.
Heat for example, carrying out different first to the blend films in different subpixel, such as carry out different temperatures
Heating, so as to form the hole of different average pore diameters and porosity in blend films in different subpixel.
In the present embodiment, as shown in Figure 4 B, blend films are for example distributed in three different sub-pixels, i.e., the first sub- picture
Plain 1, second sub-pixel 2 and the 3rd sub-pixel 3；In the present embodiment, such as not equality of temperature can be carried out to three different subpixels
The first of degree is heated, and first heats the evaporation rate that can accelerate selected cosolvent, so as to three differences
The heating that sub-pixel carries out different temperatures can so that the evaporation rate of cosolvent in three sub-pixels is different, and then three
It is different the time required to the volatilization of cosolvent in sub-pixel.Heating temperature is bigger, and the evaporation rate of cosolvent is faster, and cosolvent is waved
It is fewer the time required to hair, and then during cosolvent volatilizees, the larger first polymer material of solubility in cosolvent
Particle smaller and more is precipitated, and then makes the flat of hole in the microcavity regulating course finally formed in three different subpixels
Equal aperture is smaller and porosity is higher.Therefore in the present embodiment, can be adjusted by adjusting the heating temperature of different subpixel
The mean pore size and porosity of the hole formed in microcavity regulating course.
Step S103：Blend films are contacted with extractant.
In the present embodiment, the blend films obtained in step S102 are come into full contact with extractant, for example, extractant is the
The good solvent (to the stronger solvent of solute solubility) of one polymer material is the poor solvent of second polymer material (to molten
Matter solvent hard to tolerate or insoluble), so as to extractant can more in dissolving mixt film first polymer particle so that
First polymer particle position forms hole in the blend films.And due to the heating temperature in different subpixel not
Together, therefore in blend films the size and number that particle is precipitated in the first polymer formed is different, and then blend films and extraction
The porosity that agent comes into full contact with the hole formed in rear blend films is different with average pore size.Heating temperature in first heating
Bigger, the average pore size of the hole finally formed in blend films is smaller and porosity is higher.
Heat for example, after the completion of first polymer grain dissolution second can be carried out to the blend films with hole
Extractant is made to accelerate evaporation, in case extractant causes blend films structural failure to blend films since long-time is impregnated.Example
If second heats to carry out drying and processing to blend films progress drying and processing, such as using vacuum drying chamber, finally obtain
The blend films obtained can be used as microcavity regulating course.
In the present embodiment, first polymer material for example can be polystyrene, polymethyl methacrylate, polyethylene pyrrole
One kind in pyrrolidone and polyimide, second polymer material can be for example polystyrene, polymethyl methacrylate, gather
Another in vinylpyrrolidone and polyimide, at this time cosolvent should elect as to first polymer material and second polymer
The solvent that material dissolves, and solubility of the first polymer material in cosolvent is more than second polymer in the solvent
Solubility of the material in the cosolvent.The cosolvent is, for example, tetrahydrofuran or butanone etc..Extractant should elect the first polymerization as
The good solvent of object material, and it is the poor solvent of second polymer material, which for example can be hexamethylene or cyclohexanone
Deng.For example, when the first polymer material selected is polystyrene, and second polymer material is polymethyl methacrylate,
Cosolvent can select tetrahydrofuran, and extractant can select hexamethylene；In another example when the first polymer material selected is poly-
Methyl methacrylate, when second polymer material is polystyrene, cosolvent can select butanone, and extractant can select ring
Hexanone.
In the present embodiment, such as infrared light can be utilized to be irradiated to blend films by mask plate so as to blend films
Different subpixel carries out the first heating of different temperatures.For example, correspond to mixture in the mask plate that the present embodiment is selected
The position of the different subpixel of film have different light transmission rates, therefore for example using same infrared light supply to blend films into
When row heats, the infrared light of infrared light supply transmitting can accordingly be changed by its intensity after mask plate different parts so that
The intensity higher for the Infrared irradiation being subject in blend films corresponding to the high position of the light transmission rate of mask plate, therefore the position
The temperature higher for the heating being subject to.Such as the mask plate that aperture position corresponds to different subpixel is passed sequentially through, it shines
The infrared light of identical duration difference light intensity is penetrated, so that the corresponding sub-pixel of the stronger infrared light of light intensity obtains higher heating temperature
Degree.
For example, in an example of the present embodiment, blend films are at least correspondingly arranged in two different sub-pixels,
Such as first sub-pixel and the second sub-pixel, and in the blend films after treatment for organic light emitting diode device
During microcavity regulating course, the two sub-pixels can send the light of different wave length, such as the first sub-pixel sends the wavelength of light and is more than the
Two sub-pixels send the wavelength of light；At this point, blend films, when heating by first, the first sub-pixel is in the first heating
Heating temperature during processing can for example be less than heating temperature of second sub-pixel when first heats, therefore corresponding to the
The heating temperature that the blend films of one sub-pixel are subject to when heating is lower, therefore the cosolvent evaporation rate in the region is more
Slowly, the time needed for cosolvent volatilization is longer, and reunion is more readily formed in first polymer particle, therefore in final first sub-pixel
Blend films in the hole average pore size bigger that is formed, and porosity is lower.
For example, as shown in Figure 4 B, blend films can for example be correspondingly arranged in three different sub-pixels in the present embodiment,
That is the first sub-pixel 1, the second sub-pixel 2 and the 3rd sub-pixel 3, and organic light emission is used for after treatment in the blend films
During the microcavity regulating course of diode component, the wavelength that these three sub-pixels can send light is sequentially reduced；At this point, the blend films exist
When heating by first, the heating temperature of the first sub-pixel 1, the second sub-pixel 2 and the 3rd sub-pixel 3 when heating
Degree can for example raise successively, therefore correspond to the blend films of the first sub-pixel 1, the second sub-pixel 2 and the 3rd sub-pixel 3
Cosolvent evaporation rate raises successively, and the time used in cosolvent volatilization is sequentially reduced, therefore in the first sub-pixel 1, the second sub- picture
The average pore size of the hole formed in element 2 and 3 corresponding blend films of the 3rd sub-pixel is sequentially reduced, and porosity increases successively
Greatly.
In the present embodiment, such as it can be realized using same infrared light supply by having figuratum mask plate 10 to difference
Blend films in sub-pixel carry out different first and heat, as shown in Figure 4 B, by the first sub-pixel in this present embodiment
1st, the heating temperature of the second sub-pixel 2 and the 3rd sub-pixel 3 when heating raises successively, therefore selected by the present embodiment
Pattern possessed by mask plate 10 corresponds to possessed by the position of the first sub-pixel 1, the second sub-pixel 2 and the 3rd sub-pixel 3
Light transmission should be sequentially increased, for example, pattern possessed by mask plate 10 corresponds to the first sub-pixel 1, the second sub-pixel 2 and the
Light transmission possessed by the position of three sub-pixels 3 is followed successively by 30%, 50% and 100%, and the temperature of infrared light supply is for example set
Be set to 60 DEG C, heating time be set as 2 it is small when, therefore after the infrared light that infrared light supply is sent is by mask plate 10, transmission
The position that the intensity of infrared light corresponds to the first sub-pixel 1, the second sub-pixel 2 and the 3rd sub-pixel 3 can raise successively, therefore mixed
The heat treatment temperature of the first sub-pixel 1, the second sub-pixel 2 and the 3rd sub-pixel 3 raises successively in compound film, wherein cosolvent
Evaporation rate speed successively, cosolvent volatilization used in the time be sequentially reduced, therefore realize in the first sub-pixel 1, the second sub- picture
The hole average pore size formed in the blend films of 2 and the 3rd sub-pixel 3 of element is sequentially reduced, and porosity is sequentially increased.
In the present embodiment, the first sub-pixel 1, the second sub-pixel 2 and the 3rd sub-pixel 3 for example can be red sub-pixel,
Green sub-pixels and blue subpixels；Therefore, in red sub-pixel, green sub-pixels and blue subpixels blend films first
Heating temperature during heating raises successively, which can for example control for the material of above-mentioned selection in about 20-
70℃.For example, the heating temperature of red sub-pixel, green sub-pixels and blue subpixels be followed successively by about 30 DEG C, 50 DEG C, 70 DEG C or
20 DEG C, 40 DEG C, 60 DEG C etc. of person so that finally formed microcavity is adjusted in red sub-pixel, green sub-pixels and blue subpixels
The average pore size of hole is sequentially reduced in layer, porosity is sequentially increased, as shown in Figure 4 C.Such as microcavity is adjusted in red sub-pixel
The mean pore size of hole that layer includes is about 700nm-1000nm, such as 800nm or 900nm；Microcavity in green sub-pixels
The mean pore size for the hole that regulating course includes is about 300nm-700nm, such as 400nm or 500nm；It is micro- in blue subpixels
The mean pore size for the hole that intonation ganglionic layer includes is about 100nm-300nm, such as 200nm or 250nm.
In the present embodiment, such as the proportioning of first polymer material and second polymer material in blend films can be adjusted
To adjust porosity and mean pore size in the microcavity regulating course of its formation.
For example, when the amount of the larger first polymer material of solubility is more in cosolvent, the blend films most end form
Into the porosity that includes of microcavity regulating course it is bigger, average pore size is smaller.In the present embodiment, solubility is larger in cosolvent
First polymer material amount account for first polymer material and second polymer material mixture mass percent for example
It can be about 40%-70%, such as 50%, 60% etc..For example, when the first polymer material of selection and second polymer material
For polystyrene and polymethyl methacrylate, and extractant select it is larger to polystyrene solubility and to polymethylacrylic acid
During the smaller tetrahydrofuran of methyl esters solubility, the mass percent of possessed polystyrene for example can be about in blend films
40%-70%, and in blend films possessed polystyrene amount it is more, the finally formed microcavity of the blend films is adjusted
The average pore size of hole that layer includes is smaller, porosity is bigger.
It in another example can also be by controlling first polymer material and the blended sliver of second polymer material and cosolvent
Part, such as stir speed (S.S.), whipping temp etc. control the molten of first polymer material and second polymer material in its mixture
Solution and deployment conditions, and then adjust the porosity and mean pore size of hole in finally formed microcavity regulating course.For example,
The methods of high-speed stirred, ultrasonic agitation may be employed is come so that first polymer material and second polymer material are uniformly mixed.
In the present embodiment, microcavity regulating course possessed by organic light emitting diode device has relatively low optical index, and
And the microcavity regulating course with different average pore diameters and porosity can be with different optical indexs.For example, in an example
In, for first electrode close to the light emission side of Organic Light Emitting Diode, microcavity regulating course is located at one side of the first electrode away from luminescent layer
When, the optical index of microcavity regulating course for example can be about 1.1-1.7, such as red sub-pixel, green sub-pixels, the sub- picture of blueness
Element is respectively 1.2,1.3 or 1.4 etc..The optical index of the organic light emitting diode device can be adjusted, such as can pass through control
Average pore size and porosity adjust optical index in microcavity regulating course processed, and then adjust organic light emitting diode device and generate
Microcavity effect.It is demonstrated experimentally that within the specific limits, the optical index of organic light emitting diode device is with microcavity regulating course mesoporous
The increase of gap rate and reduce, and organic light emitting diode device generate microcavity effect enhance with the reduction of optical index.
In the manufacturing method of organic light emitting diode device provided in this embodiment, prepare and complete in above-mentioned microcavity regulating course
Afterwards, as shown in Figure 4 D, first electrode 101 or second electrode 102 are prepared on microcavity regulating course 104, then prepares luminescent layer again
The other structures such as 103, the present embodiment repeat no more.
It can be prepared using the preparation method of organic light emitting diode device provided in this embodiment and be adjusted with microcavity
The organic light emitting diode device of layer, and this method can adjust microcavity tune in organic light emitting diode device different subpixel
The average pore size and porosity of hole included by ganglionic layer, and then adjust what organic light emitting diode device different subpixel generated
Microcavity effect is finally reached the technology for adjusting the color saturation of different colours light in organic light emitting diode device different subpixel
Effect.In addition, the method preparation process of the present embodiment is simple, and it is of low cost, suitable for large-scale production.
Embodiment two
The present embodiment provides a kind of organic light emitting diode device, which is prepared by the method for above-described embodiment.This has
Machine LED device has the microcavity regulating course for including hole, and the average hole of the hole included by the microcavity regulating course
Footpath and porosity are adjusted, thus organic light emitting diode device different subpixel possessed by include different average pore diameters and
The microcavity regulating course of the hole of porosity, can to the different subpixel of organic light emitting diode device generate microcavity effect into
Row is targetedly adjusted, such as the different subpixel to organic light emitting diode device, such as can send different colours light
The microcavity effect that sub-pixel generates carries out different adjustings, and then the color for adjusting organic light emitting diode device different subpixel is satisfied
And degree.
For example, when organic light emitting diode device includes red sub-pixel, green sub-pixels and blue subpixels, these
The microcavity regulating course for the hole for including different average pore diameters and porosity that sub-pixel each has can adjust organic hair respectively
The color saturation of the red of optical diode device, green and blueness, so as to be directed to the specific of organic light emitting diode device
The average hole of hole possessed by microcavity regulating course in organic light emitting diode device is adjusted using required color saturation
Footpath size and porosity.For example, when organic light emitting diode device uses Adobe color gamut spaces, Organic Light Emitting Diode device
The green color saturation of part should be higher, and red color saturation can be relatively low, therefore it is organic to increase this to a certain extent
The average pore size for the hole that microcavity regulating course possessed by LED device Green sub-pixel includes reduces its hole
Rate reduces the average hole for the hole that microcavity regulating course possessed by red sub-pixel includes in the organic light emitting diode device
Footpath increases its porosity, so as to enhance the microcavity effect of organic light emitting diode device Green sub-pixel generation, and reduces
The microcavity effect that red sub-pixel generates in the organic light emitting diode device finally causes the organic light emitting diode device
Green color saturation should be higher, and red color saturation is relatively low.In another example when organic light emitting diode device uses DCI
During (Digital Cinema Initiatives) color gamut space, the red color saturation of organic light emitting diode device should be compared with
Height, and green color saturation can be relatively low, therefore can be red sub in the organic light emitting diode device is increased to a certain degree
The average pore size for the hole that microcavity regulating course possessed by pixel includes reduces its porosity, reduces the organic light-emitting diodes
The average pore size for the hole that microcavity regulating course possessed by tube device Green sub-pixel includes increases its porosity, so as to
Enhance the microcavity effect that red sub-pixel generates in the organic light emitting diode device, reduce in the organic light emitting diode device
The microcavity effect that green sub-pixels generate, finally so that the red color saturation of the organic light emitting diode device should be higher, and
Green color saturation is relatively low.
Embodiment three
The present embodiment provides a kind of organic light emitting diode devices, and as shown in Fig. 5 A-6B, which includes multiple pixels,
Each pixel includes at least two sub-pixels for generating different colours light, and sub-pixel includes first electrode 201, second electrode 202
And the luminescent layer 203 between first electrode 201 and second electrode 202；Sub-pixel is further included positioned at first electrode 201 away from luminous
The microcavity regulating course 204 including hole of 203 one side of layer generates the hole of the microcavity regulating course 204 of the sub-pixel of different colours light
The porosity of gap is different with average pore size.For example, at least two generate different colours light sub-pixels include the first sub-pixel and
Second sub-pixel, and the porosity of the microcavity regulating course in the first sub-pixel and average pore size and the microcavity in the second sub-pixel
The porosity of regulating course is different with average pore size.
In the present embodiment, as shown in Figure 5A, microcavity regulating course 204 can be located at first electrode 201 away from luminescent layer 203
One side, first electrode 201 can be for example anode, at this point, the hole that microcavity adjusts layer surface has convex-concave structure so that setting
The anode surface of side placed on it has convex-concave structure, and then forms the microcavity reflecting surface with certain degree of roughness, such as shape
Into the microcavity reflecting surface of different pore size size and the different degree of roughness of porosity, so as to fulfill the adjusting to microcavity effect.Or
As shown in Figure 5 B, microcavity regulating course 204 can be located at one side of the second electrode 202 away from luminescent layer 203, such as second electrode to person
202 be cathode, at this point, the light that luminescent layer 203 is sent successively is emitted after cathode and microcavity regulating course, and microcavity regulating course has
There is relatively low refractive index and its refractive index can be adjusted by adjusting mean pore size and the porosity of microcavity regulating course,
So as to fulfill the adjusting to microcavity effect.In the present embodiment, the position of first electrode 201 and second electrode 202 can exchange, i.e.,
Such as the situation of Fig. 6 A and Fig. 6 B, the present embodiment does not limit the specific location of first electrode 201 and second electrode 202.
In the present embodiment, hole that the microcavity regulating course that is formed in the different subpixel of organic light emitting diode device includes
The average pore size and porosity of gap are different.For example, organic light emitting diode device includes at least two different subpixels, such as
Can include the first sub-pixel and the second sub-pixel, and organic light emitting diode device sent in the first sub-pixel light wavelength it is big
In the wavelength that light is sent in the second sub-pixel；At this point, the average pore size example for the hole that microcavity regulating course includes in the first sub-pixel
The average pore size of the hole that microcavity regulating course includes in the second sub-pixel can be such as more than, and microcavity is adjusted in the first sub-pixel
The porosity for the hole that layer includes can for example be less than the porosity of the hole that microcavity regulating course includes in the second sub-pixel.
Such as in the case of shown in Fig. 5 A, organic light emitting diode device shows three different sub-pixels, i.e.,
One sub-pixel 1, the second sub-pixel 2 and the 3rd sub-pixel 3, and the microcavity regulating course formed in three different sub-pixels
The average pore size of 104 holes included is different with porosity.For example, when the first sub-pixel 1, the second sub-pixel 2 and the 3rd sub- picture
When the wavelength that plain 3 positions for corresponding to organic light emitting diode device can send light is sequentially reduced, formed in three sub-pixels
Microcavity regulating course in the average pore size of hole can for example be sequentially reduced, porosity can be sequentially increased.
In the present embodiment, the first sub-pixel 1, the second sub-pixel 2 and the 3rd sub-pixel 3 for example can be red sub-pixel,
Green sub-pixels and blue subpixels, and the microcavity regulating course mesoporous of red sub-pixel, green sub-pixels and blue subpixels
The average pore size of gap is sequentially reduced, porosity is sequentially increased.Such as the hole that microcavity regulating course includes in red sub-pixel is flat
Equal pore size is about 700nm-1000nm, such as 800nm or 900nm；The hole that microcavity regulating course includes in green sub-pixels
Mean pore size be about 300nm-700nm, such as 400nm or 500nm；The hole that microcavity regulating course includes in blue subpixels
The mean pore size of gap is about 100nm-300nm, such as 200nm or 250nm.Within the specific limits, Organic Light Emitting Diode
In a certain sub-pixel of device, the average pore size of hole possessed by microcavity regulating course is bigger, porosity is smaller, the sub-pixel energy
The microcavity effect enough generated is stronger, so that the color saturation for the light that the sub-pixel is sent is higher.
In the present embodiment, for example, can for the color saturation required by the concrete application of organic light emitting diode device come
Select hole pore size possessed by microcavity regulating course in the different subpixel of organic light emitting diode device.For example, working as has
When the application scenarios of machine LED device require higher red color saturation, red sub-pixel can be selected to have
Larger average pore size, smaller porosity hole microcavity regulating course organic light emitting diode device, such as selection have hole
The organic light emitting diode device for the microcavity regulating course that gap mean pore size is about 900nm, red sub-pixel exists in the device
Stronger microcavity effect can be generated when luminous, therefore the red light color saturation that the device is sent is higher.For example, when organic
When the application scenarios of LED device require higher green color saturation, green sub-pixels can be selected to have flat
The organic light emitting diode device of the microcavity regulating course of larger, porosity the hole in equal aperture, such as selection have hole
The organic light emitting diode device for the microcavity regulating course that mean pore size is about 600nm, the device Green sub-pixel are being sent out
Light time can generate stronger microcavity effect, therefore the green light color saturation that the device is sent is higher.For example, when organic hair
When the application scenarios of optical diode device require higher blue color saturation, blue subpixels can be selected to have average
Aperture is larger, the organic light emitting diode device of the microcavity regulating course of the hole of porosity, such as selects to put down with hole
Equal pore size is the organic light emitting diode device of the microcavity regulating course of 250nm, and blue subpixels are when luminous in the device
Stronger microcavity effect can be generated, therefore the blue light color saturation that the device is sent is higher.
In the present embodiment, microcavity regulating course possessed by organic light emitting diode device has relatively low optical index,
Optical index for example can be about 1.1-1.7, for example, about 1.2,1.3 or 1.4 etc., and the light of the organic light emitting diode device
Refractive index can be adjusted, such as can adjust anaclasis by controlling in microcavity regulating course the average pore size of hole and porosity
Rate, and then adjust the microcavity effect that organic light emitting diode device generates.It is demonstrated experimentally that within the specific limits, organic light emission two
The optical index of pole pipe device reduces with the increase of porosity in microcavity regulating course, the reduction of average pore size, and organic light emission
The microcavity effect that diode component generates enhances with the reduction of optical index.
In the present embodiment, organic light emitting diode device for example can be top emission type or bottom emitting type organic light-emitting diodes
Tube device, the present embodiment do not limit the species of organic light emitting diode device.
In the present embodiment, as shown in Fig. 5 A, Fig. 5 B, Fig. 6 A, Fig. 6 B, organic light emitting diode device can also include substrate
Substrate 205, thin film transistor (TFT) 206, hole transmission layer/hole injection layer 207, electron transfer layer/electron injecting layer 208 etc. other
Structure, the present embodiment do not limit this.
Example IV
The present embodiment provides a kind of organic organic LED display panel, which includes multiple pixels, and
And each pixel includes any of the above-described organic light emitting diode device.The display panel can be directed to its application environment and select
Organic light emitting diode device with different microcavity regulating courses so that the light of a variety of colors that the display panel is sent can be with
There is different color saturations according to demand.
The display panel can be used for mobile phone, tablet computer, television set, display, laptop, Digital Frame, lead
Navigate any products or component with display function such as instrument.
Also the following needs to illustrate：
(1) embodiment of the present disclosure attached drawing relates only to the structure being related to the embodiment of the present disclosure, and other structures can refer to
It is commonly designed.
(2) for clarity, in the attached drawing for describing implementation of the disclosure example, the thickness in layer or region is amplified
Or reduce, i.e., these attached drawings are not to be drawn according to actual ratio.It it is appreciated that ought such as layer, film, region or substrate etc
Element be referred to as be located at another element "above" or "below" when, the element can it is " direct " be located at another element "up" or "down" or
There may be intermediary element.
(3) in the case where there is no conflict, the feature in embodiment of the disclosure and embodiment can be mutually combined to obtain
New embodiment.
The above is only the specific embodiment of the disclosure, but the protection domain of the disclosure is not limited thereto, any
In the technical scope that those familiar with the art discloses in the disclosure, change or replacement can be readily occurred in, should all be contained
It covers within the protection domain of the disclosure.Therefore, the protection domain of the disclosure should be based on the protection scope of the described claims.
Claims (9)
1. a kind of organic light emitting diode device, which is characterized in that including：
Multiple pixels, each pixel include at least two sub-pixels for generating different colours light, and the sub-pixel includes the first electricity
Luminescent layer between pole, second electrode and the first electrode and the second electrode；
The sub-pixel further includes the microcavity regulating course including hole away from the luminescent layer one side positioned at the first electrode,
The porosity of the hole of the microcavity regulating course of the sub-pixel for generating different colours light is different with average pore size.
2. organic light emitting diode device according to claim 1, which is characterized in that the organic light emitting diode device
For top emission type organic light emitting diode device, the first electrode is with respect to second electrode away from the Organic Light Emitting Diode device
The light emission side of part.
3. organic light emitting diode device according to claim 1, which is characterized in that the first electrode relatively described
For two electrodes close to the light emission side of the Organic Light Emitting Diode, the microcavity regulating course is located at the first electrode away from the hair
The one side of photosphere, and the optical index of the microcavity regulating course is 1.1-1.7.
4. organic light emitting diode device according to claim 1, which is characterized in that described at least two generate different face
The sub-pixel of coloured light includes the first sub-pixel and the second sub-pixel, and the wavelength that first sub-pixel sends light is more than described the
Two sub-pixels send the wavelength of light, and the average pore size for the hole that microcavity regulating course includes described in first sub-pixel is more than institute
State the average pore size of the hole that microcavity regulating course includes described in the second sub-pixel.
5. organic light emitting diode device according to claim 4, which is characterized in that first sub-pixel sends light
Wavelength is more than the wavelength that light is sent in second sub-pixel, and the porosity of microcavity regulating course is small described in first sub-pixel
The porosity of microcavity regulating course described in second sub-pixel.
6. the organic light emitting diode device according to claim 2 or 4, which is characterized in that described at least two generate not
Sub-pixel with color of light includes three sub-pixels, and three sub-pixels include red sub-pixel, green sub-pixels and blueness
Sub-pixel, the hole that microcavity regulating course described in the red sub-pixel, green sub-pixels and blue subpixels includes
Average pore size is sequentially reduced, and the hole of microcavity regulating course described in the red sub-pixel, green sub-pixels and blue subpixels
Gap rate successively increases.
7. organic light emitting diode device according to claim 6, which is characterized in that micro- described in the red sub-pixel
The mean pore size for the hole that intonation ganglionic layer includes is 700nm-1000nm；
The mean pore size for the hole that microcavity regulating course described in the green sub-pixels includes is 300nm-700nm；
The mean pore size for the hole that microcavity regulating course described in the blue subpixels includes is 100nm-300nm.
8. organic light emitting diode device according to claim 1, which is characterized in that the material bag of the microcavity regulating course
Include one or both of polystyrene, polymethyl methacrylate, polyvinylpyrrolidone and polyimide.
9. a kind of display panel, which is characterized in that the display panel is included according to any organic hairs of claim 1-8
Optical diode device.
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| CN201721717190.4U CN207441755U (en) | 2017-12-11 | 2017-12-11 | Organic light emitting diode device and display panel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108075047A (en) * | 2017-12-11 | 2018-05-25 | 合肥京东方光电科技有限公司 | Organic light emitting diode device and its manufacturing method, display panel |
| CN110288912A (en) * | 2019-06-27 | 2019-09-27 | 昆山国显光电有限公司 | Flexible Displays mould group and display device |
| CN113257851A (en) * | 2020-02-10 | 2021-08-13 | 群创光电股份有限公司 | Display device |
| CN113380867A (en) * | 2021-06-08 | 2021-09-10 | 安徽熙泰智能科技有限公司 | Display structure capable of deflecting independent pixels and preparation method thereof |
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2017
- 2017-12-11 CN CN201721717190.4U patent/CN207441755U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108075047A (en) * | 2017-12-11 | 2018-05-25 | 合肥京东方光电科技有限公司 | Organic light emitting diode device and its manufacturing method, display panel |
| CN110288912A (en) * | 2019-06-27 | 2019-09-27 | 昆山国显光电有限公司 | Flexible Displays mould group and display device |
| CN113257851A (en) * | 2020-02-10 | 2021-08-13 | 群创光电股份有限公司 | Display device |
| CN113380867A (en) * | 2021-06-08 | 2021-09-10 | 安徽熙泰智能科技有限公司 | Display structure capable of deflecting independent pixels and preparation method thereof |
| CN113380867B (en) * | 2021-06-08 | 2024-03-08 | 安徽熙泰智能科技有限公司 | Display structure capable of deflecting independent pixels and preparation method thereof |
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