CN109037463A - A kind of OLED and its manufacturing method with fluorescent particles - Google Patents
A kind of OLED and its manufacturing method with fluorescent particles Download PDFInfo
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- CN109037463A CN109037463A CN201810807152.0A CN201810807152A CN109037463A CN 109037463 A CN109037463 A CN 109037463A CN 201810807152 A CN201810807152 A CN 201810807152A CN 109037463 A CN109037463 A CN 109037463A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
- C09K11/025—Use of particular materials as binders, particle coatings or suspension media therefor non-luminescent particle coatings or suspension media
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/88—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing selenium, tellurium or unspecified chalcogen elements
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- 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
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Abstract
The invention discloses a kind of OLED and its manufacturing method with fluorescent particles, OLED includes substrate, and upper surface of base plate is coated with anode, and anode disposed thereon has the insulated column layer of mesh shape, the conductive film of one layer of mesh shape or shape of stripes is deposited on the insulated column layer, it is equipped with luminescent layer above conductive film, cathode is set above luminescent layer, is provided with fluorescent particles in luminescent layer, structure of the invention principle is simple, easy to make, luminous efficiency is high, and long service life.
Description
Technical field
The present invention relates to OLED manufacturing technology field, specially a kind of OLED and its manufacturing method with fluorescent particles.
Background technique
OLED is also known as Organic Electricity laser display, organic luminous semiconductor.Deng Qingyun was taught in 1979 by Chinese descendant in America
It finds in the lab.OLED display technology have self-luminous, wide viewing angle, almost infinite high contrast, compared with low power consumption, high
The advantages that reaction speed.It, also can be more expensive than LCD TV in price but as high-end display screen.The basic structure of OLED is
By the indium tin oxide (ITO) of a thin and transparent tool characteristic of semiconductor, it is connected with the anode of electric power, along with another metal yin
Pole is bundled into the structure such as sandwich.Include in total layer: hole transmission layer (HTL), luminescent layer (EL) and electron-transport
Layer (ETL).When supplying power to appropriate voltage, positive hole will be combined with cathode charge in luminescent layer, generate light,
Different generation red, green and blue RGB three primary colors are formulated according to it, constitute basic color.The characteristic of OLED is that oneself shines, unlike TFT
LCD needs backlight, therefore visibility and brightness are high, and followed by voltage requirements are low and power saving efficiency is high, in addition reaction is fast, weight
Gently, thickness is thin, simple structure, at low cost etc., is considered as one of the product of 21 century most future.
OLED luminescence technology belongs to injection type and shines, and under forward voltage driving, anode injects empty to luminescent layer (EML)
Cave, cathode inject electronics to luminescent layer, and injected holes and electronics meet in luminescent layer and be combined into exciton, and exciton is compound and will
Energy transmission shines to luminescent material, the latter by radiative relaxation process.It however is not that every a pair of of electrons and holes all can
Photon is generated, since luminescent layer can be produced there is material quality, dislocation factor and technologic many disadvantages in oled panel
The problems such as raw impurity ionization, excitation scattering and lattice scattering, when electronics being made to transit to ground state from excitation state with lattice atoms or from
Radiationless transition occurs when sub- positive energy exchange, that is, does not generate photon, this portion of energy is not converted into luminous energy and is converted into heat
It can be lost in luminescent layer, then just there is a compound carrier transfer efficiency, the i.e. Nint=(photon that compound carrier generates
Number/compound carrier population) × 100%, the referred to as luminous internal quantum efficiency of oled panel.
In existing OLED structure, it is electronics mostly that only a small part electrons and holes are formed compound in luminescent layer
" cross and wear " phenomenon is formed with hole, i.e. hole passes through luminescent layer and reaches electron transfer layer, and electronics reaches hole across luminescent layer and passes
Defeated layer, the hole of destruction and electronics cannot effectively shine, and lead to the reduction of OLED luminous efficiency.
Summary of the invention
The purpose of the present invention is to provide a kind of OLED and its manufacturing method with fluorescent particles, to solve above-mentioned background
The problem of being proposed in technology.
To achieve the above object, the invention provides the following technical scheme: a kind of OLED with fluorescent particles, OLED include
Substrate, the upper surface of base plate are coated with anode, and the anode disposed thereon has the insulated column layer of mesh shape, the insulated column layer
The conductive film of one layer of mesh shape of upper deposition or shape of stripes, the conductive film top are equipped with luminescent layer, the luminescent layer top
Cathode is set, is provided with fluorescent particles in the luminescent layer；
The conductive film uses metal conductive film, the material of the metal conductive film is silver, copper, gold, aluminium, receive, molybdenum, tungsten, zinc,
The alloy of nickel, iron, platinum, tin or lead or in which at least the two.
Preferably, the fluorescent particles inject the luminescent layer in array-like using segmentation injection mode.
Preferably, a kind of preparation method of fluorescent particles, comprising the following steps:
A, it is added in tank body after mixing selenium powder, anhydrous sodium sulfite and deionized water, and is passed through nitrogen in tank body, by tank body
It is put into oil bath and carries out oil bath heating, heating temperature is 80 DEG C -120 DEG C, time 80min-100min, later slowly to room
Temperature obtains mixed liquor A；
B, it is 6%-8% sodium hydroxide solution, mass percent concentration that mass percent concentration is sequentially added in mixed liquor A
It for 2%-3% acetate dihydrate cadmium solution, is sufficiently mixed, mixed liquor is added in reaction kettle later, heating temperature is at room temperature
120 DEG C -160 DEG C, heating reaction 100min-300min is cooled to room temperature later, it is mixed that the solid-liquid containing CdSe quantum dot is made
It is fit；
C, styrene is added in the solid-liquid mixture that step B is obtained later, is subsequently poured into the separation of pears type separatory funnel, discards down
Layer liquid, obtains upper layer styrene suspension liquid；
D, the dodecane that mass percent concentration is 0.1%-0.2% is added in the styrene suspension liquid that step C is obtained later
Base benzene sulfonic acid sodium salt solution, is stirred under nitrogen atmosphere later, and stirring rate is 400-600 revs/min, time 20min-30min,
Obtain mixed emulsion；
E, finally mixed emulsion is injected in centrifuge tube, and centrifugal treating in centrifuge is added in centrifuge tube, it is glimmering to obtain polymer
Light particle.
Preferably, in the step E, centrifugation rate is 8000-10000 revs/min, time 5min-10min.
Preferably, manufacturing method the following steps are included:
1) one layer of anode first, is plated in upper surface of base plate, later in the insulated column layer of anode surface deposition mesh shape；
2) conductive film of one layer of mesh shape or shape of stripes, is deposited on insulated column layer later；
3) luminescent layer, is made above conductive film later, fluorescent particles are then injected in luminescent layer；
4) cathode, is finally made on the light-emitting layer, that is, completes the manufacture to OLED.
Compared with prior art, the beneficial effects of the present invention are:
(1) structure of the invention principle is simple, easy to make, and luminous efficiency is high, and long service life；Wherein, it is set in luminescent layer
Fluorescent particles are set, hole, electronics first hit fluorescent particles across luminescent layer and generate new hole and electronics, new hole and electronics
It is generated near fluorescent particles, increases compound probability；Additionally, due to the difference of fluorescent particles and cathode, the material of anode,
The energy level of newly generated electrons and holes also has change, expands the energy band range of electrons and holes in luminescent layer, also increases
Effectively compound probability.
(2) preparation method for the fluorescent particles that the present invention uses can be realized polystyrene to nanocrystalline cladding, preparation
Method is simple, economical, can be improved the performance of fluorescent particles, and then improve the luminescent properties of OLED.
Detailed description of the invention
Fig. 1 is overall structure cross-sectional view of the present invention.
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.
Please refer to Fig. 1-present invention and provide a kind of technical solution: a kind of OLED with fluorescent particles, OLED include substrate
1,1 upper surface of substrate is coated with anode 2, and 2 disposed thereon of anode has the insulated column layer 3 of mesh shape, the insulated column
The conductive film 4 of one layer of mesh shape or shape of stripes is deposited on layer 3, and luminescent layer 5 is equipped with above the conductive film 4, it is described to shine
Cathode 6 is arranged in 5 top of layer, is provided with fluorescent particles in the luminescent layer 6；Wherein, fluorescent particles are in using segmentation injection mode
Array-like injects the luminescent layer；The conductive film 4 uses metal conductive film, the material of the metal conductive film be silver, copper,
Gold aluminium, is received, molybdenum, tungsten, zinc, nickel, iron, platinum, tin or lead or in which alloy both at least.
In the present invention, the preparation methods of fluorescent particles the following steps are included:
A, it is added in tank body after mixing selenium powder, anhydrous sodium sulfite and deionized water, and is passed through nitrogen in tank body, by tank body
It is put into oil bath and carries out oil bath heating, heating temperature is 80 DEG C -120 DEG C, time 80min-100min, later slowly to room
Temperature obtains mixed liquor A；
B, it is 6%-8% sodium hydroxide solution, mass percent concentration that mass percent concentration is sequentially added in mixed liquor A
It for 2%-3% acetate dihydrate cadmium solution, is sufficiently mixed, mixed liquor is added in reaction kettle later, heating temperature is at room temperature
120 DEG C -160 DEG C, heating reaction 100min-300min is cooled to room temperature later, it is mixed that the solid-liquid containing CdSe quantum dot is made
It is fit；
C, styrene is added in the solid-liquid mixture that step B is obtained later, is subsequently poured into the separation of pears type separatory funnel, discards down
Layer liquid, obtains upper layer styrene suspension liquid；
D, the dodecane that mass percent concentration is 0.1%-0.2% is added in the styrene suspension liquid that step C is obtained later
Base benzene sulfonic acid sodium salt solution, is stirred under nitrogen atmosphere later, and stirring rate is 400-600 revs/min, time 20min-30min,
Obtain mixed emulsion；
E, finally mixed emulsion is injected in centrifuge tube, and centrifugal treating in centrifuge is added in centrifuge tube, it is glimmering to obtain polymer
Light particle.
The preparation method for the fluorescent particles that the present invention uses can be realized polystyrene to nanocrystalline cladding, preparation method
Simply, economical, it can be improved the performance of fluorescent particles, and then improve the luminescent properties of OLED.
In the present invention, a kind of manufacturing method of the OLED with fluorescent particles the following steps are included:
1) one layer of anode first, is plated in upper surface of base plate, later in the insulated column layer of anode surface deposition mesh shape；
2) conductive film of one layer of mesh shape or shape of stripes, is deposited on insulated column layer later；
3) luminescent layer, is made above conductive film later, fluorescent particles are then injected in luminescent layer；
4) cathode, is finally made on the light-emitting layer, that is, completes the manufacture to OLED.
Structure of the invention principle is simple, easy to make, and luminous efficiency is high, and long service life；Wherein, it is set in luminescent layer
Fluorescent particles are set, hole, electronics first hit fluorescent particles across luminescent layer and generate new hole and electronics, new hole and electronics
It is generated near fluorescent particles, increases compound probability；Additionally, due to the difference of fluorescent particles and cathode, the material of anode,
The energy level of newly generated electrons and holes also has change, expands the energy band range of electrons and holes in luminescent layer, also increases
Effectively compound probability.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of OLED with fluorescent particles, OLED include substrate (1), it is characterised in that: substrate (1) upper surface is coated with
Anode (2), anode (2) disposed thereon have the insulated column layer (3) of mesh shape, deposit one layer on the insulated column layer (3)
The conductive film (4) of mesh shape or shape of stripes, conductive film (4) top is equipped with luminescent layer (5), on the luminescent layer (5)
Side's setting cathode (6), the luminescent layer (6) is interior to be provided with fluorescent particles；The conductive film (4) uses metal conductive film, described
The material of metal conductive film is silver, copper, gold, aluminium, receives, the conjunction of molybdenum, tungsten, zinc, nickel, iron, platinum, tin or lead or in which at least the two
Gold.
2. a kind of OLED with fluorescent particles according to claim 1, it is characterised in that: the fluorescent particles, which use, to be divided
Section injection mode injects the luminescent layer in array-like.
3. a kind of preparation method of fluorescent particles, it is characterised in that: the preparation methods of the fluorescent particles the following steps are included:
A, it is added in tank body after mixing selenium powder, anhydrous sodium sulfite and deionized water, and is passed through nitrogen in tank body, by tank body
It is put into oil bath and carries out oil bath heating, heating temperature is 80 DEG C -120 DEG C, time 80min-100min, later slowly to room
Temperature obtains mixed liquor A；
B, it is 6%-8% sodium hydroxide solution, mass percent concentration that mass percent concentration is sequentially added in mixed liquor A
It for 2%-3% acetate dihydrate cadmium solution, is sufficiently mixed, mixed liquor is added in reaction kettle later, heating temperature is at room temperature
120 DEG C -160 DEG C, heating reaction 100min-300min is cooled to room temperature later, it is mixed that the solid-liquid containing CdSe quantum dot is made
It is fit；
C, styrene is added in the solid-liquid mixture that step B is obtained later, is subsequently poured into the separation of pears type separatory funnel, discards down
Layer liquid, obtains upper layer styrene suspension liquid；
D, the dodecane that mass percent concentration is 0.1%-0.2% is added in the styrene suspension liquid that step C is obtained later
Base benzene sulfonic acid sodium salt solution, is stirred under nitrogen atmosphere later, and stirring rate is 400-600 revs/min, time 20min-30min,
Obtain mixed emulsion；
E, finally mixed emulsion is injected in centrifuge tube, and centrifugal treating in centrifuge is added in centrifuge tube, it is glimmering to obtain polymer
Light particle.
4. a kind of preparation method of fluorescent particles according to claim 3, it is characterised in that: in the step E, centrifugation speed
Rate is 8000-10000 revs/min, time 5min-10min.
5. realizing a kind of manufacturing method of the OLED with fluorescent particles described in claim 1, it is characterised in that: its manufacturer
Method the following steps are included:
1) one layer of anode first, is plated in upper surface of base plate, later in the insulated column layer of anode surface deposition mesh shape；
2) conductive film of one layer of mesh shape or shape of stripes, is deposited on insulated column layer later；
3) luminescent layer, is made above conductive film later, fluorescent particles are then injected in luminescent layer；
4) cathode, is finally made on the light-emitting layer, that is, completes the manufacture to OLED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810807152.0A CN109037463A (en) | 2018-07-21 | 2018-07-21 | A kind of OLED and its manufacturing method with fluorescent particles |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810807152.0A CN109037463A (en) | 2018-07-21 | 2018-07-21 | A kind of OLED and its manufacturing method with fluorescent particles |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1656856A (en) * | 2002-03-29 | 2005-08-17 | 马萨诸塞州技术研究院 | Light emitting device including semiconductor nanocrystals |
| CN102060948A (en) * | 2010-12-03 | 2011-05-18 | 黑龙江大学 | Method for preparing polymer fluorescent nano particle |
| CN104752612A (en) * | 2013-12-27 | 2015-07-01 | 昆山国显光电有限公司 | OLED (Organic Light Emitting Display) and manufacturing method thereof |
| WO2016045258A1 (en) * | 2014-09-25 | 2016-03-31 | 京东方科技集团股份有限公司 | Organic electroluminescent device and preparation method, display substrate and display device thereof |
-
2018
- 2018-07-21 CN CN201810807152.0A patent/CN109037463A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1656856A (en) * | 2002-03-29 | 2005-08-17 | 马萨诸塞州技术研究院 | Light emitting device including semiconductor nanocrystals |
| CN102060948A (en) * | 2010-12-03 | 2011-05-18 | 黑龙江大学 | Method for preparing polymer fluorescent nano particle |
| CN104752612A (en) * | 2013-12-27 | 2015-07-01 | 昆山国显光电有限公司 | OLED (Organic Light Emitting Display) and manufacturing method thereof |
| WO2016045258A1 (en) * | 2014-09-25 | 2016-03-31 | 京东方科技集团股份有限公司 | Organic electroluminescent device and preparation method, display substrate and display device thereof |
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Application publication date: 20181218 |
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