CN109273623A - A kind of selfluminous element and preparation method thereof, array substrate - Google Patents
A kind of selfluminous element and preparation method thereof, array substrate Download PDFInfo
- Publication number
- CN109273623A CN109273623A CN201811141176.3A CN201811141176A CN109273623A CN 109273623 A CN109273623 A CN 109273623A CN 201811141176 A CN201811141176 A CN 201811141176A CN 109273623 A CN109273623 A CN 109273623A
- Authority
- CN
- China
- Prior art keywords
- substrate
- electrophoresis
- charged particle
- light emitting
- control structure
- 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.)
- Granted
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
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
Abstract
The embodiment of the present invention provides a kind of selfluminous element and preparation method thereof, array substrate, is related to field of display technology, the luminous efficiency of selfluminous element can be improved, and then improve the light emission luminance of selfluminous element.A kind of selfluminous element, including first electrode layer, electrophoresis control structure, light emitting functional layer and the second electrode lay being cascading；The wavelength of the electrophoresis control structure, the light for being configured to make its ultraviolet and visible absorption peak and the light emitting functional layer to issue is overlapped.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of selfluminous element and preparation method thereof, array substrate.
Background technique
Organic Light Emitting Diode is divided into Organic Light Emitting Diode (Organic Light- according to the difference of material
Emitting Diode, abbreviation OLED) and (polymer light-emitting diodes, abbreviation PLED), it is spontaneous because having
Light, wide viewing angle, high contrast, low energy consumption, rich in color, good device stability and commutating ratio and is easily achieved big ruler
The features such as very little flexible apparatus manufactures, is the research and development center of gravity of major display company always.
However, lowest unoccupied molecular orbital (the Lowest Unoccupied of cathode and luminescent layer in OLED/PLED device
Molecular Orbital, abbreviation LUMO) energy level potential barrier is larger, and exciton is serious in cathode quenching, to will affect OLED/
The luminous efficiency of PLED device.
Summary of the invention
The embodiment of the present invention provides a kind of selfluminous element and preparation method thereof, array substrate, and self-luminous device can be improved
The luminous efficiency of part, and then improve the light emission luminance of selfluminous element.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that
In a first aspect, provide a kind of selfluminous element, including be cascading first electrode layer, electrophoresis control knot
Structure, light emitting functional layer and the second electrode lay；The electrophoresis control structure, be configured to make its ultraviolet and visible absorption peak with it is described
The wavelength for the light that light emitting functional layer issues is overlapped.
Optionally, the electrophoresis control structure includes a seal cavity, is equipped with electrophoresis solution and band in the seal cavity
Charged particle；The seal cavity includes: the first substrate being oppositely arranged and the second substrate and is adjacent to first substrate and second
Third substrate and tetrabasal between substrate；The first substrate and the second substrate are charged substrate, and described
The electrical property of one substrate and the second substrate is opposite；And/or the third substrate and the tetrabasal are charged substrate,
And the third substrate and the tetrabasal are charged substrate；Wherein, the first substrate, the second substrate, described
Mutually insulated between third substrate and the tetrabasal.
Further alternative, the charged particle includes the cladding of metal nanoparticle, the cladding metal nanoparticle
The electrical regulating course of layer and the cover surface；The clad includes inorganic oxide or high molecular polymer, described
Electrical regulating course includes both sexes coupling agent；Wherein, in the case where the charged particle is positively charged, the pH value of the electrophoresis solution
Less than the isoelectric point of the charged particle；In the electronegative situation of the charged particle, the pH value of the electrophoresis solution is greater than
The isoelectric point of the charged particle.
Optionally, the electrophoresis control structure light transmission.
Optionally, the material of the light emitting functional layer includes P-type semiconductor, and the first electrode layer is cathode.
Second aspect provides a kind of array substrate, including several sub-pixels, each sub-pixel at least partly in sub-pixel
It is provided with selfluminous element described in first aspect.
Optionally, each sub-pixel in all sub-pixels is provided with the selfluminous element.
The third aspect provides a kind of preparation method of selfluminous element, comprising: first electrode layer, electricity is formed on the substrate
Swimming control structure, light emitting functional layer and the second electrode lay；The light emitting functional layer is located at first electrode layer and the second electrode lay
Between, electrophoresis control structure is between the first electrode layer and the light emitting functional layer；The electrophoresis control structure, configuration
The wavelength of light to issue its ultraviolet and visible absorption peak and the light emitting functional layer is overlapped；Wherein, the electrophoresis control structure
Including a seal cavity, electrophoresis solution and charged particle are equipped in the seal cavity；Form the seal cavity, comprising:
The first substrate being oppositely arranged and the second substrate are formed on the substrate and are adjacent between first substrate and the second substrate
Third substrate and tetrabasal；The first substrate and the second substrate are charged substrate, and the first substrate and institute
State the electrically opposite of the second substrate；And/or the third substrate and the tetrabasal are charged substrate, and the third
Substrate and the tetrabasal are charged substrate；The first substrate, the second substrate, the third substrate, Yi Jisuo
State mutually insulated between tetrabasal.
Optionally, the charged particle is formed, comprising: form the clad of clad metal nano particle；In clad table
Face forms electrical regulating course；Wherein, the clad includes inorganic oxide or high molecular polymer, the electrical property regulating course packet
Include both sexes coupling agent；Wherein, in the case where the charged particle is positively charged, the pH value of the electrophoresis solution is less than the electrification
The isoelectric point of particle；In the electronegative situation of the charged particle, the pH value of the electrophoresis solution is greater than the charged particle
Isoelectric point.
It is further alternative, second voltage is inputted to first substrate input first voltage, to the second substrate respectively, and/or,
The 4th voltage is inputted to third substrate input tertiary voltage, to tetrabasal respectively；By adjusting the pH value of the electrophoresis solution,
And/or the size of first voltage and second voltage is reconciled, and/or, the size of tertiary voltage and the 4th voltage is reconciled, so that
The absorption peak of the electrophoresis control structure is overlapped with the wavelength for the light that the light emitting functional layer issues.
The embodiment of the present invention provides a kind of selfluminous element and preparation method thereof, array substrate, by first electrode layer
Electrophoresis control structure is set between light emitting functional layer, and makes the ultraviolet and visible absorption peak and light emitting functional layer of electrophoresis control structure
The wavelength of the light of sending is overlapped, and can reinforce the fluorescence signal of sub-pixel corresponding with electrophoresis control structure, to improve sub-pixel
Luminous efficiency, to improve the brightness of sub-pixel, when the selfluminous element be applied to array substrate when, due to array substrate with
Using the time increase, generate local luminance is low, it is bad caused by dim spot or colour cast etc. when, using the self-luminous device
Part carries out dynamic adjustment to part sub-pixel, to correct picture quality.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of schematic diagram of selfluminous element provided in an embodiment of the present invention；
Fig. 2 is a kind of schematic diagram of selfluminous element provided in an embodiment of the present invention；
Fig. 3 is a kind of schematic diagram of selfluminous element provided in an embodiment of the present invention；
Fig. 4 is a kind of schematic diagram of selfluminous element provided in an embodiment of the present invention；
Fig. 5 is a kind of schematic diagram of selfluminous element provided in an embodiment of the present invention；
Fig. 6 is that a kind of luminous efficiency of light emitting functional layer provided in an embodiment of the present invention compares figure；
Fig. 7 is a kind of schematic diagram of array substrate provided in an embodiment of the present invention；
Fig. 8 is a kind of absorption intensity comparison diagram of metal nanoparticle provided in an embodiment of the present invention under various circumstances.
Appended drawing reference:
10- substrate；11- first electrode layer；12- electrophoresis control structure；121- first substrate；122- the second substrate；123-
Third substrate；124- tetrabasal；125- charged particle；126- insulating materials；13- light emitting functional layer；14- the second electrode lay.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the present invention provides a kind of selfluminous element, as depicted in figs. 1 and 2, including be cascading first
Electrode layer 11, electrophoresis control structure 12, light emitting functional layer 13 and the second electrode lay 14；Electrophoresis control structure 12 is configured to make
Its ultraviolet and visible absorption peak is overlapped with the wavelength for the light that light emitting functional layer 13 issues.
Wherein, when the selfluminous element is applied to array substrate, the corresponding sub-pixel of a selfluminous element, hair
The wavelength for the light that part corresponding with the sub-pixel issues in light functional layer 13, and electrophoresis corresponding with sub-pixel control knot
The ultraviolet and visible absorption peak of structure 12 is overlapped.
It should be noted that first, the selfluminous element can be including OLED luminescent device or send out including PLED
The selfluminous element of optical device.The selfluminous element can be passive type (Passive Matrix, abbreviation PMOLED) driving,
It is also possible to active (Active Matrix, abbreviation AMOLED) driving.
Wherein, when the selfluminous element includes OLED luminescent device, light emitting functional layer 13 includes the luminous material of small molecule
Material；When the selfluminous element includes OLED luminescent device, light emitting functional layer 13 includes macromolecule polyalcohol luminescent material.
Second, when first electrode layer 11 is anode, the second electrode lay 14 is cathode；When first electrode layer 11 is cathode
When, the second electrode lay 14 is anode.
Third, first electrode layer 11, electrophoresis control structure 12, light emitting functional layer 13 and the second electrode lay 14 successively layer
It is folded to be arranged on substrate 10；Alternatively, the second electrode lay 14, light emitting functional layer 13, electrophoresis control structure 12 and first electrode layer
11 are cascading on substrate 10.
Herein, electrophoresis control structure 12 can be arranged in the form of intercalation first electrode layer 11 and light emitting functional layer 13 it
Between, that is, electrophoresis control structure 12 is the unit being individually encapsulated.Other film layers of the selfluminous element, such as light emitting functional layer
13 and first electrode layer 11, the second electrode lay 14 can in glove box spin coating complete.
4th, the specific structure of electrophoresis control structure 12 is not defined, as long as the ultraviolet of electrophoresis control structure 12 can
See that the wavelength for the light that absorption peak can be issued with light emitting functional layer 13 is overlapped.
Wherein, the light that part corresponding with a sub-pixel issues in light emitting functional layer 13 can be red, green, blue
One of；Alternatively, the light that corresponding with sub-pixel part issues in light emitting functional layer 13 be also possible to red, green,
One of blue, white；Alternatively, the light that part corresponding with a sub-pixel issues in light emitting functional layer 13 is also possible to product
One of red, cyan, yellow；Alternatively, the light that corresponding with sub-pixel part issues in light emitting functional layer 13 can also be with
It is one of magenta, cyan, yellow, white.
Certainly, light emitting functional layer 13 can be sent out the light of other colors, specifically, it is related with practical application, herein not
It repeats again.
By taking the light that light emitting functional layer 13 issues is blue light as an example, the wavelength of blue light is between 400~450nm, therefore, electricity
As long as it is right with electrophoresis control structure 12 that the ultraviolet and visible absorption peak of swimming control structure 12 can be reinforced between 400~450nm
The fluorescence signal for the sub-pixel answered.
Wherein, since the wave crest of blue light is 435nm, it is therefore preferable that the ultraviolet and visible absorption peak of electrophoresis control structure 12 is
435nm, so that the ultraviolet and visible absorption peak of electrophoresis control structure 12 is overlapped with the wavelength height of blue light, thus more effectively
Reinforce the fluorescence signal of sub-pixel corresponding with electrophoresis control structure 12.
5th, the selfluminous element can be bottom light emitting structure, be also possible to push up light emitting structure, naturally it is also possible to be the
The double-side structure that one electrode layer 11 and the second electrode lay 14 can be such that light penetrates.
Herein, compared to bottom light emitting structure, light can be emitted from the top of top light emitting structure for showing, without by pixel
The influence of aperture opening ratio, therefore preferably the selfluminous element is top light emitting structure or double-side structure.
Wherein, when electrophoresis control structure 12 is set between anode and light emitting functional layer 13 and the luminescent device is bottom
When light emitting structure or double-side structure, 12 light transmission of electrophoresis control structure；When electrophoresis control structure 12 is set to cathode and shines
Between functional layer 13 and when the luminescent device is top light emitting structure or double-side structure, 12 light transmission of electrophoresis control structure.
When electrophoresis 12 light transmission of control structure, the material of first electrode layer 11 and the second electrode lay 14 can be tin indium oxide
Transparent conductive materials such as (Indium tin oxide, abbreviation ITO).
The embodiment of the present invention provides a kind of selfluminous element, by setting between first electrode layer 11 and light emitting functional layer 13
The wave for the light set electrophoresis control structure 12, and issue the ultraviolet and visible absorption peak of electrophoresis control structure 12 and light emitting functional layer 13
It is long to be overlapped, the fluorescence signal of sub-pixel corresponding with electrophoresis control structure 12 can be reinforced, so that the luminous efficiency of sub-pixel is improved,
To improve the brightness of sub-pixel, when the selfluminous element is applied to array substrate, since array substrate is with using the time
Increase, generate local luminance is low, it is bad caused by dim spot or colour cast etc. when, using the selfluminous element to part
Pixel carries out dynamic adjustment, to correct picture quality.
Meanwhile the corresponding light emitting functional layer 13 of each electrophoresis control structure 12, hair that can effectively to single sub-pixel
Light efficiency is adjusted.
Optionally, as in Figure 3-5, electrophoresis control structure 12 includes a seal cavity, and it is molten to be equipped with electrophoresis in seal cavity
Liquid and charged particle 125；Seal cavity includes: the first substrate 121 being oppositely arranged and the second substrate 122 and is adjacent to
Third substrate 123 and tetrabasal 124 between one substrate 121 and the second substrate 122；First substrate 121 and the second substrate 122
It is charged substrate, and the electrical property of first substrate 121 and the second substrate 122 is opposite；And/or third substrate 123 and tetrabasal
124 be charged substrate, and third substrate 123 and tetrabasal 124 are charged substrate；Wherein, first substrate 121, second
Mutually insulated between substrate 122, third substrate 123 and tetrabasal 124.
Herein, when electrophoresis 12 light-permeable of control structure, first substrate 121, the second substrate 122, third substrate 123, with
And tetrabasal 124 can be the transparent conductive materials such as tin indium oxide.
It should be noted that first, as shown in figure 3, first substrate 121, the second substrate 122, third substrate 123 and
Tetrabasal 124 is charged substrate；Alternatively, as shown in figure 4, first substrate 121 and the second substrate 122 are charged substrate, the
Three substrates 123 and tetrabasal 124 are not charged；Alternatively, as shown in figure 5, first substrate 121 and the second substrate 122 are not charged,
Three substrates 123 and tetrabasal 124 are charged substrate.
Wherein, as shown in figure 3, in first substrate 121, the second substrate 122, third substrate 123 and tetrabasal 124
In the case where being charged substrate, between first substrate 121 and third substrate 123, first substrate 121 and tetrabasal 124 it
Between be additionally provided with insulating materials 126, between the second substrate 122 and third substrate 123, the second substrate 122 and tetrabasal 124 it
Between be additionally provided with insulating materials 126 so that first substrate 121, the second substrate 122, third substrate 123 and tetrabasal
Mutually insulated two-by-two between 124.
Second, charged particle 125 can be positively charged, can also be negatively charged, specifically, with the material of charged particle 125 with
And the pH value of electrophoresis solution is related.
Third is not defined the material of charged particle 125, as long as charged particle 125 can be presented in electrophoresis solution
For positively or negatively, and the distance between charged particle 125 and light emitting functional layer 13 are with first substrate 121 and the second base
Electric field between plate 122 changes, and/or, the distance between adjacent charged particle 125 is with third substrate 123 and tetrabasal
Electric field between 124 changes.Wherein, the electrical property of charged particle 125 and the pH value of electrophoresis solution and the material of itself have
It closes.
4th, the material of electrophoresis solution is not defined, exemplary, can selecting three acid buffering solution, (BR buffering is molten
Liquid) it is used as electrophoresis solution, wherein and three acid buffering solution are mixed in a certain proportion by phosphoric acid, boric acid and acetic acid.Wherein,
Different amounts of sodium hydroxide can be added into three acid buffering solution can change the pH value of electrophoresis solution, with according to actual needs
The pH value of electrophoresis solution is adjusted.Herein, it by the way that different amounts of sodium hydroxide is added in three acid buffering solution, may make
The pH value of electrophoresis solution is adjusted between 1.8~11.9.
5th, charge entrained by 125 surface of charged particle should ensure that it with enough migration velocities, to first
Electric field change between substrate 121 and the second substrate 122, and/or, to the electric field between third substrate 123 and tetrabasal 124
Variation responds, to be rapidly reached equilibrium state.
In the embodiment of the present invention, electrophoresis control structure 12 includes a seal cavity, by adjusting the pH value of electrophoresis solution, with
Change the electrical property of charged particle 125, further, by adjusting the voltage between first substrate 121 and the second substrate 122, changes
The distance between variable speed charged particle 125 and light emitting functional layer 13, to realize the electromagnetism between charged particle 125 and luminescence profile
Field coupling；By adjusting the voltage between third substrate 123 and tetrabasal 124, change between adjacent charged particle 125 away from
From so that the electromagnetic field couples between charged particle 125 are realized, to realize that fluorescence enhancement improves the mesh of sub-pixel for emitting light efficiency
's.
Herein, in light emitting functional layer 13, the section for emitting light is luminescence profile.
On this basis, by first substrate 121 and the second substrate 122, and/or, third substrate 123 and tetrabasal
124 carry out fine patterned process, can cooperate the luminous effect of different resolution or the selfluminous element of other specific demands
The promotion of rate.
It is further alternative, charged particle 125 include metal nanoparticle, clad metal nano particle clad, with
And the electrical regulating course of cover surface；Clad includes inorganic oxide or high molecular polymer, and electrical regulating course includes two
Property coupling agent；Wherein, in the case where charged particle 125 is positively charged, the pH value of electrophoresis solution is less than the equal electricity of charged particle 125
Point；In the electronegative situation of charged particle 125, the pH value of electrophoresis solution is greater than the isoelectric point of charged particle 125.
It should be noted that first, metal nanoparticle, which should be, to be had in visible light region, surface plasma body resonant vibration
(Surface Plasmon Resonance, abbreviation SPR) adjustable material of characteristic, for example, the material of metal nanoparticle can be with
It is golden (Au) or silver (Ag), is also possible to the material of various metals mixing.
Second, the material of clad can be one of inorganic oxide or high molecular polymer, for example, it may be three
Al 2 O, silica etc..
Wherein, the thickness of clad can be 2~4nm, in case core metal nanoparticle loses good local surface
Plasma properties.
Exemplary, the thickness of clad can be 2nm, 2.5nm, 4nm.
Third, the material of both sexes coupling agent and the material of clad are related, and both sexes coupling agent is had an effect with clad, with
Play the role of changing charge.
Exemplary, the material of clad is silica, and the material of both sexes coupling agent is silane coupling agent.Wherein, silane
Coupling agent has amino and carboxyl (ratio 1:1) simultaneously, so, the band electrochondria simultaneous with amino and carboxyl can be obtained
Son 125, invert the surface charge of charged particle 125 when adjusting the pH value of electrophoresis solution.
4th, in reasonable distance range, optional metal nanoparticle and one end and hair close to light emitting functional layer 13
The distance between light functional layer 13 is 10nm or more, to ensure metalfluorescent humidification, avoids generating fluorescent quenching, influences institute
State the luminous efficiency of selfluminous element.
Exemplary, the overall thickness of clad and both sexes coupling agent is 2nm, the thickness of first substrate 121 and the second substrate 122
Respectively 8nm, so, the distance between metal nanoparticle and light emitting functional layer 13 are 10nm.
On this basis, the thickness of electrophoresis control layer 12 can be determined according to the diameter D of used metal nanoparticle,
The thickness of electrophoresis control layer 12 is usually the diameter D+25nm of metal nanoparticle.
In the embodiment of the present invention, due to the basic mistake that spontaneous radiation is derived from radiation and interaction between substances and generates
Journey, the property in addition to depending on excited of atoms is also closely related with the optical coupled environment of surrounding, therefore, using metal
The coupling of the concussion eelctric dipole of 13 radiation transistion of electromagnetic field and light emitting functional layer of surface phasmon, accelerates the self-luminous device
The exciton radiation transistion rate of excitation state in part enhances shining for the selfluminous element using metalfluorescent humidification
By wrapping up clad on metal nanoparticle the stability and service life of metal nanoparticle can be improved, with more in efficiency
Charged particle 125 is controlled well as electric field moves in seal cavity, further, by the outermost of metal nanoparticle
Layer cladding both sexes coupling agent, may make charged particle 125 to carry out surface charge reversion in the electrophoresis solution of different PH, thus
Electrophoresis control structure 12 is set to be suitable for enhancing the luminous efficiency of the visible light of multiple color.
On this basis, metal nanoparticle and light emitting functional layer 13 are separated, it can be to avoid directly the methods of doping
Middle metal nanoparticle directly contacts and fluorescent quenching with light emitting functional layer 13, to cause the luminous effect of the selfluminous element
Rate reduces.By to first substrate 121 and the second substrate 122, and/or, third substrate 123 and tetrabasal 124 carry out finely
Patterned process, the promotion of the luminous efficiency of different resolution or the selfluminous element of other specific demands can be cooperated.
In addition, as shown in figure 8, be the metal nanoparticle that diameter is 40mm monodisperse sol and its to be scattered in electrophoresis molten
Abosrption spectrogram in liquid, it can be seen from the figure that the absorption intensity of the monodisperse sol compared to metal nanoparticle, dispersion
The absorption intensity of metal nanoparticle in electrophoresis solution is bigger.
Optionally, the material of light emitting functional layer 13 includes P-type semiconductor, and first electrode layer 11 is cathode.
Herein, it is contemplated that when the material of light emitting functional layer 13 includes P-type semiconductor, electron mobility compares hole migration
Low 1~2 order of magnitude of rate, that is, relative to anode, therefore the luminescence profile of light emitting functional layer 13, electrophoresis is controlled closer to cathode
Structure 12 is arranged between cathode and light emitting functional layer 13, can make the surface plasmon resonance of metal nanoparticle
Efficient coupling between (localized Surface Plasmon Resonance, abbreviation LSPR) and light emitting functional layer 13.
The embodiment of the present invention provides a kind of array substrate, as shown in fig. 7, comprises several sub-pixels, at least partly sub-pixel
In each sub-pixel be provided with selfluminous element described in aforementioned any embodiment.
It should be noted that each sub-pixel in part sub-pixel in array substrate is equipped with the self-luminous device
Part；Alternatively, each sub-pixel in all sub-pixels in array substrate is equipped with the selfluminous element.Specifically, with reality
Border application and demand are related.Each sub-pixel in preferably all sub-pixels of the embodiment of the present invention is provided with the self-luminous device
Part.
It wherein, can when each sub-pixel in the part sub-pixel in array substrate is equipped with the selfluminous element
To be that each sub-pixel in some or the corresponding all sub-pixels of two colors is provided with the selfluminous element；It can also
To be that each sub-pixel in all sub-pixels in a certain region in array substrate is equipped with the selfluminous element.
It is of course also possible to be other situations, herein without limiting.
The embodiment of the present invention provides a kind of array substrate, including the selfluminous element, by first electrode layer 11 with
Electrophoresis control structure 12 is set between light emitting functional layer 13, and makes the ultraviolet and visible absorption peak of electrophoresis control structure 12 and luminous function
The wavelength for the light that ergosphere 13 issues is overlapped, and can reinforce the fluorescence signal of sub-pixel corresponding with electrophoresis control structure 12, to mention
The luminous efficiency of high sub-pixel, to improve the brightness of sub-pixel, when the array substrate is with the increase for using the time, generation office
Portion's brightness is low, it is bad caused by dim spot or colour cast etc. when, dynamic is carried out to part sub-pixel using the selfluminous element
Adjustment, to correct picture quality.
Meanwhile the corresponding light emitting functional layer 13 of each electrophoresis control structure 12, hair that can effectively to single sub-pixel
Light efficiency is adjusted.
The embodiment of the present invention provides a kind of preparation method of selfluminous element, as depicted in figs. 1 and 2, comprising: in substrate 10
Upper formation first electrode layer 11, electrophoresis control structure 12, light emitting functional layer 13 and the second electrode lay 14；Light emitting functional layer 13
Between first electrode layer 11 and the second electrode lay 14, electrophoresis control structure 12 is located at first electrode layer 11 and light emitting functional layer
Between 13；Electrophoresis control structure 12 is configured to the wavelength weight for the light for issuing its ultraviolet and visible absorption peak and light emitting functional layer 13
It closes.
It should be noted that first, the selfluminous element can be including OLED luminescent device or send out including PLED
The selfluminous element of optical device.The selfluminous element can be passive type driving, be also possible to active driving.
Wherein, when the selfluminous element includes OLED luminescent device, light emitting functional layer 13 includes the luminous material of small molecule
Material；When the selfluminous element includes OLED luminescent device, light emitting functional layer 13 includes macromolecule polyalcohol luminescent material.
Second, when first electrode layer 11 is anode, the second electrode lay 14 is cathode；When first electrode layer 11 is cathode
When, the second electrode lay 14 is anode.
Third, successively on substrate 10 formed first electrode layer 11, electrophoresis control structure 12, light emitting functional layer 13 and
The second electrode lay 14；Alternatively, successively on substrate 10 formed the second electrode lay 14, light emitting functional layer 13, electrophoresis control structure 12,
And first electrode layer 11.
4th, the selfluminous element can be bottom light emitting structure, be also possible to push up light emitting structure, naturally it is also possible to be the
The double-side structure that one electrode layer 11 and the second electrode lay 14 can be such that light penetrates.
Herein, compared to bottom light emitting structure, light can be emitted from the top of top light emitting structure for showing, without by pixel
The influence of aperture opening ratio, therefore preferably the selfluminous element is top light emitting structure or double-side structure.
Wherein, when electrophoresis control structure 12 is set between anode and light emitting functional layer 13 and the luminescent device is bottom
When light emitting structure or double-side structure, 12 light transmission of electrophoresis control structure；When electrophoresis control structure 12 is set to cathode and shines
Between functional layer 13 and when the luminescent device is top light emitting structure or double-side structure, 12 light transmission of electrophoresis control structure.
When electrophoresis 12 light transmission of control structure, the material of first electrode layer 11 and the second electrode lay 14 can be tin indium oxide
Equal transparent conductive materials.
On the basis of the above, as in Figure 3-5, electrophoresis control structure 12 includes a seal cavity, is equipped in seal cavity
Electrophoresis solution and charged particle 125.Form seal cavity, comprising: 121 He of first substrate being oppositely arranged is formed on substrate 10
The second substrate 122 and the third substrate 123 and tetrabasal 124 being adjacent between first substrate 121 and the second substrate 122；
First substrate 121 and the second substrate 122 are charged substrate, and the electrical property of first substrate 121 and the second substrate 122 is opposite；With/
Or, third substrate 123 and tetrabasal 124 are charged substrate, and third substrate 123 and tetrabasal 124 are electrification base
Plate；Mutually insulated between first substrate 121, the second substrate 122, third substrate 123 and tetrabasal 124.
Herein, when electrophoresis 12 light-permeable of control structure, first substrate 121, the second substrate 122, third substrate 123, with
And tetrabasal 124 can be the transparent conductive materials such as tin indium oxide.
It should be noted that first, as shown in figure 3, first substrate 121, the second substrate 122, third substrate 123 and
Tetrabasal 124 is charged substrate；Alternatively, as shown in figure 4, first substrate 121 and the second substrate 122 are charged substrate, the
Three substrates 123 and tetrabasal 124 are not charged；Alternatively, as shown in figure 5, first substrate 121 and the second substrate 122 are not charged,
Three substrates 123 and tetrabasal 124 are charged substrate.
Wherein, as shown in figure 3, in first substrate 121, the second substrate 122, third substrate 123 and tetrabasal 124
In the case where being charged substrate, between first substrate 121 and third substrate 123, first substrate 121 and tetrabasal 124 it
Between be additionally provided with insulating materials 126, between the second substrate 122 and third substrate 123, the second substrate 122 and tetrabasal 124 it
Between be additionally provided with insulating materials 126 so that first substrate 121, the second substrate 122, third substrate 123 and tetrabasal
Mutually insulated two-by-two between 124.
Second, charged particle 125 can be positively charged, can also be negatively charged, specifically, with the material of charged particle 125 with
And the pH value of electrophoresis solution is related.
Third is not defined the material of charged particle 125, as long as charged particle 125 can be presented in electrophoresis solution
For positively or negatively, and the distance between charged particle 125 and light emitting functional layer 13 are with first substrate 121 and the second base
Electric field between plate 122 changes, and/or, the distance between adjacent charged particle 125 is with third substrate 123 and tetrabasal
Electric field between 124 changes.Wherein, the electrical property of charged particle 125 and the pH value of electrophoresis solution and the material of itself have
It closes.
4th, the material of electrophoresis solution is not defined, exemplary, can selecting three acid buffering solution, (BR buffering is molten
Liquid) it is used as electrophoresis solution, wherein and three acid buffering solution are mixed in a certain proportion by phosphoric acid, boric acid and acetic acid.Wherein,
Different amounts of sodium hydroxide can be added into three acid buffering solution can change the pH value of electrophoresis solution, with according to actual needs
The pH value of electrophoresis solution is adjusted.Herein, it by the way that different amounts of sodium hydroxide is added in three acid buffering solution, may make
The pH value of electrophoresis solution is adjusted between 1.8~11.9.
5th, charge entrained by 125 surface of charged particle should ensure that it with enough migration velocities, to first
Electric field change between substrate 121 and the second substrate 122, and/or, to the electric field between third substrate 123 and tetrabasal 124
Variation responds, to be rapidly reached equilibrium state.
The embodiment of the present invention provides a kind of preparation method of selfluminous element, has skill identical with aforementioned selfluminous element
Art effect, details are not described herein.
Optionally, charged particle 125 is formed, comprising: form the clad of clad metal nano particle；In cover surface
Form electrical regulating course；Wherein, clad includes inorganic oxide or high molecular polymer, and electrical regulating course includes both sexes coupling
Agent；Wherein, in the case where charged particle 125 is positively charged, the pH value of electrophoresis solution is less than the isoelectric point of charged particle 125；?
In the electronegative situation of charged particle 125, the pH value of electrophoresis solution is greater than the isoelectric point of charged particle 125.
It should be noted that first, metal nanoparticle, which should be, to be had in visible light region, and surface plasma body resonant vibration is special
Property adjustable material for example, the material of metal nanoparticle can be gold or silver be also possible to the material of various metals mixing
Material.
Second, the material of clad can be one of inorganic oxide or high molecular polymer, for example, it may be three
Al 2 O, silica etc..
Wherein, the thickness of clad can be 2~4nm, in case core metal nanoparticle loses good local surface
Plasma properties.
Exemplary, the thickness of clad can be 2nm, 2.5nm, 4nm.
Third, the material of both sexes coupling agent and the material of clad are related, and both sexes coupling agent is had an effect with clad, with
Play the role of changing charge.
Exemplary, the material of clad is silica, and the material of both sexes coupling agent is silane coupling agent.Wherein, silane
Coupling agent has amino and carboxyl (ratio 1:1) simultaneously, so, the band electrochondria simultaneous with amino and carboxyl can be obtained
Son 125, invert the surface charge of charged particle 125 when adjusting the pH value of electrophoresis solution.
4th, in reasonable distance range, optional metal nanoparticle and one end and hair close to light emitting functional layer 13
The distance between light functional layer 13 is 10nm or more, to ensure metalfluorescent humidification, avoids generating fluorescent quenching, influences institute
State the luminous efficiency of selfluminous element.
Exemplary, the overall thickness of clad and both sexes coupling agent is 2nm, the thickness of first substrate 121 and the second substrate 122
Respectively 8nm, so, the distance between metal nanoparticle and light emitting functional layer 13 are 10nm.
On this basis, the thickness of electrophoresis control layer 12 can be determined according to the diameter D of used metal nanoparticle,
The thickness of electrophoresis control layer 12 is usually the diameter D+25nm of metal nanoparticle.
In the embodiment of the present invention, due to the basic mistake that spontaneous radiation is derived from radiation and interaction between substances and generates
Journey, the property in addition to depending on excited of atoms is also closely related with the optical coupled environment of surrounding, therefore, using metal
The coupling of the concussion eelctric dipole of 13 radiation transistion of electromagnetic field and light emitting functional layer of surface phasmon, accelerates the self-luminous device
The exciton radiation transistion rate of excitation state in part enhances shining for the selfluminous element using metalfluorescent humidification
By wrapping up clad on metal nanoparticle the stability and service life of metal nanoparticle can be improved, with more in efficiency
Charged particle 125 is controlled well as electric field moves in seal cavity, further, by the outermost of metal nanoparticle
Layer cladding both sexes coupling agent, may make charged particle 125 to carry out surface charge reversion in the electrophoresis solution of different PH, thus
Electrophoresis control structure 12 is set to be suitable for enhancing the luminous efficiency of the visible light of multiple color.
On this basis, metal nanoparticle and light emitting functional layer 13 are separated, it can be to avoid directly the methods of doping
Middle metal nanoparticle directly contacts and fluorescent quenching with light emitting functional layer 13, to cause the luminous effect of the selfluminous element
Rate reduces.By to first substrate 121 and the second substrate 122, and/or, third substrate 123 and tetrabasal 124 carry out finely
Patterned process, the promotion of the luminous efficiency of different resolution or the selfluminous element of other specific demands can be cooperated.
It is further alternative, first voltage is inputted to first substrate 121 respectively, inputs second voltage to the second substrate 122,
And/or input tertiary voltage to third substrate 123 respectively, input the 4th voltage to tetrabasal 124, it is molten by adjusting electrophoresis
The pH value of liquid, and/or, the size of first voltage and second voltage is reconciled, and/or, reconcile the big of tertiary voltage and the 4th voltage
It is small, so that the wavelength for the light that the absorption peak of electrophoresis control structure 12 and light emitting functional layer 13 issue is overlapped.
Herein, the electrical property of charged particle 125 can be adjusted by adjusting the pH value of electrophoresis solution, exemplary, electrophoresis is molten
Liquid is three acid buffering solution, sodium hydroxide can be injected into three acid buffering solution, to change the pH value of electrophoresis solution.
Can according to the picture of display, in time to the size of first voltage and second voltage, come adjust charged particle 125 with
The distance between luminescence profile, and/or, the size of tertiary voltage and the 4th voltage is adjusted, to adjust between charged particle 125
Distance.Herein, such as it can use the circuit in array substrate to adjust first voltage, second voltage tertiary voltage, the 4th electricity
The size of pressure.
It is exemplary, choose Nano silver grain, the silica cladding Nano silver grain with 2nm that diameter is 33nm, benefit
Stabilization and chemical surface abundant with silica obtain band in silica surface by the modification of silane coupling agent
Simultaneous with the particle of amino and carboxyl (1:1), to make the surface charge of charged particle 125 invert, due to charged particle 125
Isoelectric point it is similar with the isoelectric point of neutral amino acid, therefore, when electrophoresis solution pH value be less than charged particle 125 isoelectric point
When, 125 surface of charged particle is positively charged；When the pH value of electrophoresis solution is greater than the isoelectric point of charged particle 125, charged particle
125 surfaces are negatively charged, so that be conducive to multiple charged particles 125 generates electrostatic phase interaction in the electrophoresis solution of specific pH value
With, to generate effective electromagnetic field couples, and/or, be conducive to charged particle 125 in the electrophoresis solution of specific pH value with hair
Light functional layer 13 generates electrostatic interaction, to generate effective electromagnetic field couples.Wherein, as shown in fig. 6, the charged particle
125 ultraviolet and visible absorption peak is 420nm, high with the registration of blue light, can play good metalfluorescent reinforcing effect, with
For blue, in the identical situation of driving voltage, the luminous efficiency of selfluminous element described in the embodiment of the present invention is common
2.6 times of the luminous efficiency of the selfluminous element of structure.Wherein, the concentration of charged particle 125 is 5.5nMol/ in electrophoresis solution
L.Meanwhile can also by adjusting first voltage, second voltage, the size of tertiary voltage, the 4th voltage in electrophoresis control layer 12, with
And the type and quantity of the charged particle 125 in electrophoresis solution, so that the luminous efficiency of the selfluminous element further enhances.
On this basis, can also by adjusting the size of first voltage and second voltage, and/or, tertiary voltage and the
The size of four voltages, and/or, the pH value of electrophoresis solution also can produce the characteristic absorption for covering entire visible light region, thus real
Now to the enhancing of green light (wave crest 546nm) and feux rouges (wave crest 700nm).
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of selfluminous element, which is characterized in that including the first electrode layer, electrophoresis control structure, hair being cascading
Light functional layer and the second electrode lay；
The electrophoresis control structure is configured to the wavelength weight for the light for issuing its ultraviolet and visible absorption peak and the light emitting functional layer
It closes.
2. selfluminous element according to claim 1, which is characterized in that the electrophoresis control structure includes a seal chamber
Body, the seal cavity is interior to be equipped with electrophoresis solution and charged particle；
The seal cavity includes: the first substrate being oppositely arranged and the second substrate and is adjacent to first substrate and the second base
Third substrate and tetrabasal between plate；
The first substrate and the second substrate are charged substrate, and the electrical property of the first substrate and the second substrate
On the contrary；And/or the third substrate and the tetrabasal are charged substrate, and the third substrate and the 4th base
Plate is charged substrate；
Wherein, mutually insulated between the first substrate, the second substrate, the third substrate and the tetrabasal.
3. selfluminous element according to claim 2, which is characterized in that the charged particle include metal nanoparticle,
Coat the clad of the metal nanoparticle and the electrical regulating course of the cover surface；
The clad includes inorganic oxide or high molecular polymer, and the electrical property regulating course includes both sexes coupling agent；
Wherein, in the case where the charged particle is positively charged, the pH value of the electrophoresis solution be less than the charged particle etc.
Electric point；In the electronegative situation of the charged particle, the pH value of the electrophoresis solution is greater than the isoelectric point of the charged particle.
4. selfluminous element according to claim 1, which is characterized in that the electrophoresis control structure light transmission.
5. selfluminous element according to claim 1-4, which is characterized in that the material packet of the light emitting functional layer
P-type semiconductor is included, the first electrode layer is cathode.
6. a kind of array substrate, which is characterized in that including several sub-pixels, each sub-pixel at least partly in sub-pixel is all provided with
It is equipped with selfluminous element described in claim 1-5.
7. array substrate according to claim 6, which is characterized in that each sub-pixel in all sub-pixels is provided with
The selfluminous element.
8. a kind of preparation method of selfluminous element characterized by comprising
First electrode layer, electrophoresis control structure, light emitting functional layer and the second electrode lay is formed on the substrate；
For the light emitting functional layer between first electrode layer and the second electrode lay, electrophoresis control structure is located at the first electrode
Between layer and the light emitting functional layer；The electrophoresis control structure is configured to make its ultraviolet and visible absorption peak and the luminous function
The wavelength for the light that ergosphere issues is overlapped；
Wherein, the electrophoresis control structure includes a seal cavity, is equipped with electrophoresis solution and charged particle in the seal cavity；
Form the seal cavity, comprising:
The first substrate being oppositely arranged and the second substrate are formed over the substrate and are adjacent to first substrate and the second substrate
Between third substrate and tetrabasal；
The first substrate and the second substrate are charged substrate, and the electrical property of the first substrate and the second substrate
On the contrary；And/or the third substrate and the tetrabasal are charged substrate, and the third substrate and the 4th base
Plate is charged substrate；
Mutually insulated between the first substrate, the second substrate, the third substrate and the tetrabasal.
9. the preparation method of selfluminous element according to claim 8, which is characterized in that form the charged particle, wrap
It includes:
Form the clad of clad metal nano particle；
Electrical regulating course is formed in cover surface；
Wherein, the clad includes inorganic oxide or high molecular polymer, and the electrical property regulating course includes both sexes coupling agent；
Wherein, in the case where the charged particle is positively charged, the pH value of the electrophoresis solution be less than the charged particle etc.
Electric point；In the electronegative situation of the charged particle, the pH value of the electrophoresis solution is greater than the isoelectric point of the charged particle.
10. the preparation method of selfluminous element according to claim 9, which is characterized in that inputted respectively to first substrate
First voltage inputs second voltage to the second substrate, and/or, respectively to third substrate input tertiary voltage, defeated to tetrabasal
Enter the 4th voltage；
By the pH value of the adjusting electrophoresis solution, and/or, the size of first voltage and second voltage is reconciled, and/or, it reconciles
The size of tertiary voltage and the 4th voltage, so that the absorption peak of the electrophoresis control structure and the light emitting functional layer issued
The wavelength of light is overlapped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811141176.3A CN109273623B (en) | 2018-09-28 | 2018-09-28 | Self-luminous device, preparation method thereof and array substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811141176.3A CN109273623B (en) | 2018-09-28 | 2018-09-28 | Self-luminous device, preparation method thereof and array substrate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109273623A true CN109273623A (en) | 2019-01-25 |
| CN109273623B CN109273623B (en) | 2021-01-26 |
Family
ID=65198711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811141176.3A Active CN109273623B (en) | 2018-09-28 | 2018-09-28 | Self-luminous device, preparation method thereof and array substrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109273623B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050088078A1 (en) * | 2003-01-28 | 2005-04-28 | Mei-Rurng Tseng | Organic electroluminescent device |
| CN101169910A (en) * | 2006-10-27 | 2008-04-30 | 徐瑞禧 | Display device with self-luminescent module and non self-luminescent module |
| US20090027329A1 (en) * | 2007-07-25 | 2009-01-29 | Samsung Electronics Co., Ltd | Surface plasmon display device and method thereof |
| CN104103766A (en) * | 2014-06-27 | 2014-10-15 | 京东方科技集团股份有限公司 | Organic light-emitting diode, array substrate and fabrication method thereof and display device |
| CN204407333U (en) * | 2015-03-08 | 2015-06-17 | 莆田市荔城区聚慧科技咨询有限公司 | Organic LED display panel and display unit |
| CN107275514A (en) * | 2017-06-15 | 2017-10-20 | 京东方科技集团股份有限公司 | A kind of OLED and preparation method thereof, display device |
| CN206773363U (en) * | 2016-09-19 | 2017-12-19 | 广州奥翼电子科技股份有限公司 | Optical element and electrophoretic display device (EPD) for display device |
-
2018
- 2018-09-28 CN CN201811141176.3A patent/CN109273623B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050088078A1 (en) * | 2003-01-28 | 2005-04-28 | Mei-Rurng Tseng | Organic electroluminescent device |
| CN101169910A (en) * | 2006-10-27 | 2008-04-30 | 徐瑞禧 | Display device with self-luminescent module and non self-luminescent module |
| US20090027329A1 (en) * | 2007-07-25 | 2009-01-29 | Samsung Electronics Co., Ltd | Surface plasmon display device and method thereof |
| CN104103766A (en) * | 2014-06-27 | 2014-10-15 | 京东方科技集团股份有限公司 | Organic light-emitting diode, array substrate and fabrication method thereof and display device |
| CN204407333U (en) * | 2015-03-08 | 2015-06-17 | 莆田市荔城区聚慧科技咨询有限公司 | Organic LED display panel and display unit |
| CN206773363U (en) * | 2016-09-19 | 2017-12-19 | 广州奥翼电子科技股份有限公司 | Optical element and electrophoretic display device (EPD) for display device |
| CN107275514A (en) * | 2017-06-15 | 2017-10-20 | 京东方科技集团股份有限公司 | A kind of OLED and preparation method thereof, display device |
Non-Patent Citations (1)
| Title |
|---|
| A. FUJIKI 等: "《Enhanced fluorescence by surface plasmon coupling of Au nanoparticles in an organic electroluminescence diode》", 《APPLIED PHYSICS LETTERS》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109273623B (en) | 2021-01-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103872261B (en) | A kind of organic electroluminescence device and display device | |
| JP6223417B2 (en) | Light emitting device including anisotropic flat colloidal semiconductor nanocrystal and method for manufacturing the same | |
| KR101530748B1 (en) | Highly efficient organic light emitting device and method for manufacturing the same | |
| CN202839615U (en) | Organic light-emitting diode display | |
| US6608439B1 (en) | Inorganic-based color conversion matrix element for organic color display devices and method of fabrication | |
| JP2007165284A (en) | Electroluminescent device and display using same | |
| JP4564773B2 (en) | LIGHT EMITTING ELEMENT AND DISPLAY DEVICE THEREOF | |
| US20080093978A1 (en) | Electroluminescent device and electroluminescent panel | |
| CN103730584A (en) | Display panel and display device | |
| CN1725521B (en) | Optoelectronic device and manufacturing method | |
| JPWO2005097939A1 (en) | Fluorescence conversion medium and color light emitting device | |
| CN102683610A (en) | Organic electroluminescent device and illumination apparatus | |
| CA2910550C (en) | Light emitting material and method for production thereof | |
| US9958137B2 (en) | Light-emitting device containing anisotropic flat colloidal semiconductor nanocrystals and methods of manufacture thereof | |
| CN106653803A (en) | Organic light emitting display panel and organic light emitting display device | |
| CN106449720B (en) | A kind of organic light emitting display panel and organic light-emitting display device | |
| CN108258132B (en) | Electroluminescent display device | |
| CN108029178A (en) | Organnic electroluminescent device, the manufacture method of Organnic electroluminescent device, lighting device and display device | |
| CN104851906B (en) | Display base plate and preparation method thereof and driving method and display device | |
| CN106299145A (en) | Organic light emitting diode device and preparation method thereof and display floater | |
| CN106717121A (en) | Organic electroluminescence device and method for manufacturing organic electroluminescence device | |
| Wu et al. | Emerging nanopixel light-emitting displays: Significance, challenges, and prospects | |
| US20050057176A1 (en) | Color tunable panel of organic electroluminscent display | |
| US20050057177A1 (en) | Color tunable panel of organic electroluminescent display | |
| CN109273623A (en) | A kind of selfluminous element and preparation method thereof, array substrate |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |