CN110267406A - A kind of ultrathin flexible EL sheet and preparation method thereof - Google Patents
A kind of ultrathin flexible EL sheet and preparation method thereof Download PDFInfo
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- CN110267406A CN110267406A CN201910568061.0A CN201910568061A CN110267406A CN 110267406 A CN110267406 A CN 110267406A CN 201910568061 A CN201910568061 A CN 201910568061A CN 110267406 A CN110267406 A CN 110267406A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000000758 substrate Substances 0.000 claims abstract description 36
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 28
- 230000008569 process Effects 0.000 claims abstract description 24
- 238000005401 electroluminescence Methods 0.000 claims abstract description 23
- 239000002042 Silver nanowire Substances 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 22
- 229920000172 poly(styrenesulfonic acid) Polymers 0.000 claims abstract description 19
- GKWLILHTTGWKLQ-UHFFFAOYSA-N 2,3-dihydrothieno[3,4-b][1,4]dioxine Chemical compound O1CCOC2=CSC=C21 GKWLILHTTGWKLQ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 239000002002 slurry Substances 0.000 claims description 21
- 239000003292 glue Substances 0.000 claims description 17
- 125000000129 anionic group Chemical group 0.000 claims description 14
- 238000007711 solidification Methods 0.000 claims description 11
- 230000008023 solidification Effects 0.000 claims description 11
- 229910052788 barium Inorganic materials 0.000 claims description 10
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 10
- 239000004744 fabric Substances 0.000 claims description 7
- 238000002834 transmittance Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000004642 Polyimide Substances 0.000 claims description 5
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 5
- 239000002518 antifoaming agent Substances 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 239000002270 dispersing agent Substances 0.000 claims description 5
- -1 formic acid glycol ester Chemical class 0.000 claims description 5
- 229920001721 polyimide Polymers 0.000 claims description 5
- 230000005855 radiation Effects 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 3
- 239000011112 polyethylene naphthalate Substances 0.000 claims description 3
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 2
- 238000007641 inkjet printing Methods 0.000 claims description 2
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 claims description 2
- 238000009738 saturating Methods 0.000 claims description 2
- 238000007650 screen-printing Methods 0.000 claims description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims 3
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims 2
- SYBUMOIKKHDLBN-UHFFFAOYSA-N C(=C)S(=O)(=O)O.C1=CC=CC=C1 Chemical compound C(=C)S(=O)(=O)O.C1=CC=CC=C1 SYBUMOIKKHDLBN-UHFFFAOYSA-N 0.000 claims 1
- 235000019253 formic acid Nutrition 0.000 claims 1
- 238000005507 spraying Methods 0.000 claims 1
- 238000005452 bending Methods 0.000 abstract description 15
- 239000004020 conductor Substances 0.000 abstract description 5
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000001737 promoting effect Effects 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 15
- 229910052709 silver Inorganic materials 0.000 description 6
- 239000004332 silver Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229920000144 PEDOT:PSS Polymers 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- 229910010293 ceramic material Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 150000001450 anions Chemical class 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 229920001940 conductive polymer Polymers 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- ZMYGBKXROOQLMY-UHFFFAOYSA-N N=NC=NN.N=NC=NN.C1=CC=CC2=CC=CC=C12 Chemical compound N=NC=NN.N=NC=NN.C1=CC=CC2=CC=CC=C12 ZMYGBKXROOQLMY-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000002322 conducting polymer Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical compound O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 239000002070 nanowire Substances 0.000 description 1
- 235000012149 noodles Nutrition 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/10—Apparatus or processes specially adapted to the manufacture of electroluminescent light sources
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/12—Light sources with substantially two-dimensional radiating surfaces
- H05B33/26—Light sources with substantially two-dimensional radiating surfaces characterised by the composition or arrangement of the conductive material used as an electrode
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention discloses a kind of ultrathin flexible EL sheets, successively include flexible transparent electrode, electroluminescence layer, insulating layer and flexible transparent electrode, and the flexible transparent electrode is made of transparent substrate and transparency conducting layer；The transparency conducting layer is the film of any one material or the mixture film of two kinds of materials in poly- (3,4- Ethylenedioxy Thiophene)-poly- (styrene sulfonic acid) and silver nanowires；The transparency conducting layer with a thickness of 10nm~200nm.It is replaced using the better novel transparent conductive material of bending resistance, to realize that the thickness of transparent electro luminescent device entirety is more frivolous, flexibility is more preferable, various aspects of performance is excellent and stablizes, adhesive force has well widened the application range of EL sheet significantly, is of great significance to the industrial applications for promoting EL sheet.The invention also discloses the preparation method of ultrathin flexible EL sheet, simple process and low cost is conveniently used for industrialization production.
Description
Technical field
The present invention relates to photoelectric device technical fields, and in particular to a kind of ultrathin flexible EL sheet and its preparation side
Method.
Background technique
EL sheet is worked with electroluminescent principle.EL sheet is a kind of luminescent device, abbreviation cold light film,
EL lamp, EL light tiles or EL cold light film, it is by back electrode layer, insulating layer, luminescent layer, transparent electrode layer and surface protection film group
At the characteristic of light is generated under electric field action using luminescent material, converts electrical energy into luminous energy.With lightweight, flexibility
Application scenarios occur, and the demand to more frivolous, more flexible EL sheet increasingly rises, and wherein most important technical restriction
Factor is that the thickness of flexible transparent electrode.Common flexible and transparent conductive material has metal grill, nano-silver thread and leads
Electric high molecular material.However, the bottleneck problem of limitation silver nanowires transparent conductive film practical application is silver nanowires at present
Uniformity difference and oxidizable problem, and the key for solving both of these problems be that various aspects of performance can be obtained it is excellent, stable
Match high molecular material.
Traditional transparency conducting layer mainly uses tin indium oxide (ITO), fluorine-doped tin oxide (FTO), Al-Doped ZnO
(AZO) etc. brittle ceramic materials are deposited in transparent substrate, to have transparent and conductive characteristic.It is resistance to due to ceramic material
Bending performance is undesirable, and when depositing on thin (≤100 μm) flexible parent metal, the cost of transparent electrode can be significantly risen；Super
When the transparent substrate of thin (≤50 μm) still deposits, above-mentioned ceramic material completely cannot due to its more apparent brittleness with substrate
Matching.Therefore, it is limited by base material thickness, the thickness of current EL sheet is generally at 400 μm or more, wherein two layers saturating
The thickness of bright substrate has just been more than 250 μm.
In addition, traditional transparency conducting layer is made of transparent substrate and brittle ceramic conductive layer, after multiple bending, or
When person's bending curvature is excessive, brittle ceramic conductive layer is easily caused to rupture, so that the square resistance of transparency conducting layer is anxious
Play rises, and finally influences the uniformity of luminance of EL sheet；When being particularly applied on ultra-thin flexible parent metal, brittleness pottery
Porcelain conductive layer easily fails because of bending.
Therefore, develop a kind of electrically conducting transparent layer material flexible, be to promote photo-luminescent sheet in bending occasion and ultra-thin base
The key applied on material.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the conventional electroluminescent piece mentioned in background above technology not
Foot and defect provide a kind of EL sheet ultra-thin, bending resistance is excellent, and provide a kind of technical process it is simple,
The preparation method of good product performance, EL sheet at low cost.
In order to solve the above technical problems, technical solution proposed by the present invention are as follows:
A kind of ultrathin flexible EL sheet, the ultrathin flexible EL sheet successively include flexible transparent electrode, electricity
Electroluminescent layer, insulating layer and flexible transparent electrode, the flexible transparent electrode are made of transparent substrate and transparency conducting layer；It is described
Transparency conducting layer is the thin of any one material in poly- (3,4- Ethylenedioxy Thiophene)-poly- (styrene sulfonic acid) and silver nanowires
The mixture film of film or two kinds of materials；The transparency conducting layer with a thickness of 10nm~200nm.
The present invention is by poly- (3,4- Ethylenedioxy Thiophene)-poly- (styrene sulfonic acid) (PEDOT:PSS) solution and silver nanoparticle
Line is compounded, and two kinds of material high transmittances and flexibility are remained, and relative to simple silver nanowires film, is had better
Oxidation resistance；Relative to simple conductive polymer film (PEDOT:PSS film), there is better electric conductivity.By anti-
Multiple research, flexible and transparent conductive layer made of above-mentioned material have a suitable square resistance, high light transmittance and excellent
Bending resistance.Under conditions of crooked process radius is 1mm, bending number is 500,000 times, square resistance is without being decreased obviously, table
Bright above-mentioned transparent conductive film can meet the application requirement of ultrathin flexible photo-luminescent sheet well.
Above-mentioned ultrathin flexible EL sheet, it is preferred that (3,4- ethylenedioxy thiophenes poly- in the mixture film
Pheno)-poly- (styrene sulfonic acid) and silver nanowires mass ratio be 1:0.5-5.
Preferably, the transparent substrate is polyethylene terephthalate (PET), polyimides (PI), poly- naphthalene diformazan
Substrate made of sour glycol ester (PEN) or polymethyl methacrylate (PMMA)；The transparent substrate with a thickness of 15 μm~
100μm。
Preferably, thickness≤300 μm of the ultrathin flexible EL sheet.
Preferably, the electroluminescence layer is by nanometer barium powder and aqueous anionic UV glue matching according to mass ratio 1:2-3
Than mixing, the insulating layer is aqueous anionic UV glue.
Since poly- (3,4- Ethylenedioxy Thiophene)-poly- (styrene sulfonic acid) material is aqueous ionic type conducting polymer,
By addition silver nanowires, it can be achieved that the transparent conductive film of ultrathin flexible, has excellent bending resistance；In addition, in order to
The interface binding power that the device of guarantee has had under flexible and folded condition, the present invention use matched aqueous anionic UV
Glue carries out the bonding of flexible and transparent conductive electrode and electroluminescence layer or insulating layer, and aqueous anionic UV glue reacts in situ
Afterwards, bonding reaction is formed with the organic principle in transparent conductive film, it is ensured that electroluminescent integral device is in bending
Stability under state.
Preferably, the square resistance of the transparency conducting layer is 20~300 Ω/, and light transmittance is 80~95%.
The present invention obtains novel ultrathin flexible electrically conducting transparent by carrying out technology upgrading to traditional transparent electrode material
Layer material is expanded EL sheet and is answered in lightweight, filming scene to reduce the integral thickness of EL sheet
With, and be expected to gradually substitute transparent conductive metal oxide thin-film material in the electronic device that flexible, folding, curved surface are applied,
Contenders as INVENTIONConventional metal-oxide transparent conductive material.
Based on a total technical concept, the present invention also provides a kind of preparation sides of above-mentioned ultrathin flexible EL sheet
Method includes the following steps:
(1) after carrying out cleaning treatment to transparent substrate 11, poly- (3,4- Asia second are coated in transparent substrate 11 using print process
Propylenedioxythiophene) slurries of any one material or the mixing comprising two kinds of materials in-poly- (styrene sulfonic acid) and silver nanowires
Object slurries form transparency conducting layer 12, obtain flexible transparent electrode 1；
(2) raw material of electroluminescence layer is coated in the flexible transparent electrode 1 obtained after the step (1) using print process
Slurries form electroluminescence layer 2 after carrying out UV solidification；
(3) raw slurry of layer of cloth is applied on the electroluminescence layer 2 obtained after the step (2) using print process,
Form insulating layer 3；
(4) on the insulating layer 3 obtained after the step (3), then it is bonded the flexibility obtained behind a piece of (1) by the step
Transparent electrode 1 obtains the ultrathin flexible EL sheet after carrying out UV solidification.
Above-mentioned preparation method, it is preferred that include poly- (3,4- Ethylenedioxy Thiophene)-poly- (styrene sulfonic acid) He Yinna
The mix slurry of rice noodles is made of water and following each component as mass fraction: poly- (3,4- Ethylenedioxy Thiophene)-is poly-
(styrene sulfonic acid) 0.05%~3.00%, silver nanowires 0.01%~4.00%, dispersing agent 0.05%~1.00%, levelling agent
0.05%~1.00%, defoaming agent 0.05%~1.00%, hardening agent 0.05%~1.00%, silane coupling agent 0.05%~
1.00%.
It is furthermore preferred that the wire length of the silver nanowires is 3.00~30.00 μm；The dispersing agent is selected from BYK-103, BYK-
110, at least one of BYK-163, EfKA-4010 and Solsperse-24000；The levelling agent be selected from BYK-333,
At least one of EfKA-3777, TEGO-410 and TEGO-450；Selected defoaming agent is selected from BYK-024, BYK-019, JT-908
At least one of with EfKA-2720；Selected hardening agent is selected from Dowcorning-51, EL-7650, EL-7651 and FX-W6001
At least one of；Selected silane coupling agent is selected from least one of KH-550, KH-560, KH-792 and OFS-6070.
Preferably, by low-temperature silver gluing knot, external electrode is drawn respectively in two panels flexible transparent electrode.
Preferably, the print process includes slot coated, blade coating, bar blade coating, silk-screen printing, inkjet printing and spray
Any one or a few in painting.
Preferably, the cured amount of radiation > 200mJ/cm of the UV2, the UV cured time is 3-30s.
Compared with prior art, the invention has the benefit that
1, ultrathin flexible EL sheet of the invention carries out upgrading by the transparent conductive substrate to conventional thicker and changes
Into being replaced using the better novel transparent conductive material of bending resistance, to realize that transparent electro luminescent device is whole
Thickness is more frivolous, flexibility is more preferable；Compared to traditional transparent conductive material, the characteristic in terms of flexibility is significantly mentioned
Height, bending resistance is good, and oxidation resistance, weather resistance, bending resistance, light transmission, electric conductivity and mechanical performance are excellent
Different and stable, adhesive force is good, has widened the application range of EL sheet significantly, to the industrial applications for promoting EL sheet
It is of great significance.
2, ultrathin flexible EL sheet of the invention, the transparency conducting layer material against oxidative ability of use, weather resistance,
Bending resistance, light transmission, electric conductivity and mechanical performance are excellent and stable, and adhesive force is good, environment-protecting and non-poisonous.
3, preparation method of the invention, simple process and low cost are conveniently used for industrialization production, use comprising poly-
The mix slurry of (3,4- Ethylenedioxy Thiophene)-poly- (styrene sulfonic acid) and silver nanowires is starched as transparency conducting layer raw material
Liquid is full water-based system, environment-protecting and non-poisonous, while retaining the excellent electric conductivity of metal nanometer line and mechanical performance, is also mentioned
The high oxidation resistance of metal nanometer line, does not generate industrial bubble in printing work progress.
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 the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the structural schematic diagram of ultrathin flexible EL sheet of the present invention.
Marginal data:
1, flexible transparent electrode；2, electroluminescence layer；3, insulating layer；11, transparent substrate；12, transparency conducting layer.
Specific embodiment
To facilitate the understanding of the present invention, the present invention is done below in conjunction with Figure of description and preferred embodiment more complete
Face meticulously describes, but protection scope of the present invention is not limited to following specific embodiments.
Unless otherwise defined, all technical terms used hereinafter are generally understood meaning phase with those skilled in the art
Together.Technical term used herein is intended merely to the purpose of description specific embodiment, and it is of the invention to be not intended to limitation
Protection scope.
Unless otherwise specified, various raw material, reagent, the instrument and equipment etc. used in the present invention can pass through city
Field is commercially available or can be prepared by existing method.
Embodiment 1:
A kind of ultrathin flexible EL sheet of the invention, the structure of the ultrathin flexible EL sheet as shown in Figure 1, its
The electroluminescence layer 2 that is successively mixed by flexible transparent electrode 1, nanometer barium powder and aqueous anionic UV glue, aqueous yin from
The insulating layer 3 and flexible transparent electrode 1 of subtype UV glue preparation form, and flexible transparent electrode 1 is from outside to inside by 11 He of transparent substrate
Transparency conducting layer 12 forms.Wherein transparent substrate be polyethylene terephthalate (PET), transparent substrate with a thickness of 15 μ
m；Transparency conducting layer is poly- (3,4- Ethylenedioxy Thiophene)-poly- (styrene sulfonic acid) (PEDOT:PSS) film, transparency conducting layer
With a thickness of 10nm, the square resistance of transparency conducting layer is 300 Ω/, light transmittance 95%；Nanometer barium powder in electroluminescence layer
Mass ratio with aqueous anionic UV glue is 1:2.
The preparation method of the ultrathin flexible EL sheet mainly comprises the steps that
(1) it after carrying out cleaning treatment to transparent substrate 11, is coated in transparent substrate 11 using slot coated print process poly-
(3,4- Ethylenedioxy Thiophene)-poly- (styrene sulfonic acid) slurries form transparency conducting layer 12, obtain flexible transparent electrode 1；
(2) nanometer barium powder is coated in the flexible transparent electrode 1 obtained after the step (1) using slot coated print process
The raw slurry mixed with aqueous anionic UV glue forms electroluminescence layer 2 after carrying out UV solidification；
(3) fabric aqueous anion is applied on the electroluminescence layer 2 obtained after the step (2) using slot coated print process
The raw slurry of type UV glue forms insulating layer 3；
(4) on the insulating layer 3 obtained after the step (3), then it is bonded the flexibility obtained behind a piece of (1) by the step
Transparent electrode 1 obtains the ultrathin flexible EL sheet after carrying out UV solidification；The cured amount of radiation > 200mJ/ of UV
cm2, the UV cured time is 5s.
By low-temperature silver gluing knot, external electrode is drawn respectively in two panels flexible transparent electrode 1.
The overall thickness of the ultrathin flexible EL sheet is 100 μm, under the crooked process radius of 3mm, bends 100 Wan Cihou,
Still without damage, luminous intensity reaches target without obvious decaying.
Embodiment 2:
A kind of ultrathin flexible EL sheet of the invention, the structure of the ultrathin flexible EL sheet as shown in Figure 1, its
The electroluminescence layer 2 that is successively mixed by flexible transparent electrode 1, nanometer barium powder and aqueous anionic UV glue, aqueous yin from
The insulating layer 3 and flexible transparent electrode 1 of subtype UV glue preparation form, and flexible transparent electrode 1 is from outside to inside by 11 He of transparent substrate
Transparency conducting layer 12 forms.Wherein transparent substrate be polyimides (PI), transparent substrate with a thickness of 50 μm；Transparency conducting layer is
Silver nanowires, transparency conducting layer with a thickness of 100nm, the square resistance of transparency conducting layer is 20 Ω/, light transmittance 80%；
The mass ratio of nanometer barium powder and aqueous anionic UV glue is 1:2.5 in electroluminescence layer.
The preparation method of the ultrathin flexible EL sheet mainly comprises the steps that
(1) to transparent substrate 11 carry out cleaning treatment after, using slot coated print process in transparent substrate 11 silver coating
Nano wire slurries form transparency conducting layer 12, obtain flexible transparent electrode 1；
(2) nanometer barium powder is coated in the flexible transparent electrode 1 obtained after the step (1) using slot coated print process
The raw slurry mixed with aqueous anionic UV glue forms electroluminescence layer 2 after carrying out UV solidification；
(3) fabric aqueous anion is applied on the electroluminescence layer 2 obtained after the step (2) using slot coated print process
The raw slurry of type UV glue forms insulating layer 3；
(4) on the insulating layer 3 obtained after the step (3), then it is bonded the flexibility obtained behind a piece of (1) by the step
Transparent electrode 1 obtains the ultrathin flexible EL sheet after carrying out UV solidification；The cured amount of radiation > 200mJ/ of UV
cm2, the UV cured time is 15s.
By low-temperature silver gluing knot, external electrode is drawn respectively in two panels flexible transparent electrode 1.
The overall thickness of the ultrathin flexible EL sheet is 300 μm, under the crooked process radius of 3mm, bends 50 Wan Cihou, still
Without damage, luminous intensity reaches target without obvious decaying.
Embodiment 3:
A kind of ultrathin flexible EL sheet of the invention, the structure of the ultrathin flexible EL sheet as shown in Figure 1, its
The electroluminescence layer 2 that is successively mixed by flexible transparent electrode 1, nanometer barium powder and aqueous anionic UV glue, aqueous yin from
The insulating layer 3 and flexible transparent electrode 1 of subtype UV glue preparation form, and flexible transparent electrode 1 is from outside to inside by 11 He of transparent substrate
Transparency conducting layer 12 forms.Wherein transparent substrate be polyethylene naphthalate (PEN), transparent substrate with a thickness of 50 μm；
Transparency conducting layer is poly- (3,4- Ethylenedioxy Thiophene)-poly- (styrene sulfonic acid) (PEDOT:PSS) and silver nanowires presses quality
Than the mixture film for 1:5, transparency conducting layer with a thickness of 50nm, the square resistance of transparency conducting layer is 150 Ω/, thoroughly
Light rate is 90%；The mass ratio of nanometer barium powder and aqueous anionic UV glue is 1:3.
The preparation method of the ultrathin flexible EL sheet mainly comprises the steps that
(1) in mass ratio by poly- (3,4- Ethylenedioxy Thiophene)-poly- (styrene sulfonic acid), silver nanowires and deionized water
Dilution mixing, grinding distribution are uniform；It is gradually added dispersing agent, levelling agent, defoaming agent, hardening agent, silane coupling agent in order again,
Lifting is uniformly dispersed, and obtains high solids content stoste；Stoste is diluted 25 times with water in proportion, the electrically conducting transparent for obtaining bubble-free applies
Cloth liquid is printed or is coated in substrate with the mode of slot coated, and annealing solidification 20min is carried out at 100 DEG C, obtains transparent lead
Electric layer；
Mix slurry is composed of the following components: poly- (3,4- Ethylenedioxy Thiophene)-poly- (styrene sulfonic acid) 3.00%,
Silver nanowires 2.00%, dispersing agent (BYK-163) 0.50%, levelling agent (BYK-333) 0.20%, defoaming agent (BYK-024)
0.10%, hardening agent (Dowcorning-51) 0.05%, silane coupling agent (KH-560 0.02%, OFS-6070 0.03%)
0.05%, water 94.10%；Silver nanowires is the silver nanowires aqueous solution that concentration is 5mg/mL, and wire length is 15.00 μm；
(2) after carrying out cleaning treatment to transparent substrate 11, cloth bag is applied in transparent substrate 11 using slot coated print process
Mix slurry containing poly- (3,4- Ethylenedioxy Thiophene)-poly- (styrene sulfonic acid) and silver nanowires forms transparency conducting layer
12, obtain flexible transparent electrode 1；
(3) electroluminescent is coated in the flexible transparent electrode 1 obtained after the step (2) using slot coated print process
The raw slurry of layer forms electroluminescence layer 2 after carrying out UV solidification；
(4) original of layer of cloth is applied on the electroluminescence layer 2 obtained after the step (3) using slot coated print process
Slurry liquid forms insulating layer 3；
(5) on the insulating layer 3 obtained after the step (4), then it is bonded the flexibility obtained behind a piece of (2) by the step
Transparent electrode 1 obtains the ultrathin flexible EL sheet after carrying out UV solidification；The cured amount of radiation > 200mJ/ of UV
cm2, the UV cured time is 30s.
By low-temperature silver gluing knot, external electrode is drawn respectively in two panels flexible transparent electrode 1.
The overall thickness of the ultrathin flexible EL sheet is 150 μm, under the crooked process radius of 3mm, bends 80 Wan Cihou, still
Without damage, luminous intensity reaches target without obvious decaying.And the ultrathin flexible EL sheet tool that the embodiment obtains
There are good oxidation resistance and electric conductivity.
The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the present invention can there are many changes and variation.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of ultrathin flexible EL sheet, which is characterized in that the ultrathin flexible EL sheet successively includes flexible saturating
Prescribed electrode (1), electroluminescence layer (2), insulating layer (3) and flexible transparent electrode (1), the flexible transparent electrode (1) is by transparent
Substrate (11) and transparency conducting layer (12) composition；The transparency conducting layer is poly- (3,4- Ethylenedioxy Thiophene)-poly- (styrene
Sulfonic acid) and silver nanowires in the film of any one material or the mixture film of two kinds of materials；The thickness of the transparency conducting layer
Degree is 10nm~200nm.
2. ultrathin flexible EL sheet according to claim 1, which is characterized in that poly- in the mixture film (3,
4- Ethylenedioxy Thiophene)-poly- (styrene sulfonic acid) and silver nanowires mass ratio be 1:0.5-5.
3. ultrathin flexible EL sheet according to claim 1, which is characterized in that the transparent substrate is poly- to benzene two
Substrate made of formic acid glycol ester, polyimides, polyethylene naphthalate or polymethyl methacrylate；It is described transparent
Substrate with a thickness of 15 μm~100 μm.
4. ultrathin flexible EL sheet according to claim 1, which is characterized in that the ultrathin flexible EL sheet
Thickness≤300 μm.
5. ultrathin flexible EL sheet according to claim 1, which is characterized in that the electroluminescence layer is by nanometer barium
Powder is mixed with aqueous anionic UV glue according to the proportion of mass ratio 1:2-3, and the insulating layer is aqueous anionic UV
Glue.
6. ultrathin flexible EL sheet according to any one of claims 1 to 5, which is characterized in that described transparent to lead
The square resistance of electric layer is 20~300 Ω/, and light transmittance is 80~95%.
7. a kind of preparation method of such as ultrathin flexible EL sheet according to any one of claims 1 to 6, feature exist
In including the following steps:
(1) after carrying out cleaning treatment to transparent substrate (11), poly- (3,4- Asia second are coated on transparent substrate (11) using print process
Propylenedioxythiophene) slurries of any one material or the mixing comprising two kinds of materials in-poly- (styrene sulfonic acid) and silver nanowires
Object slurries form transparency conducting layer (12), obtain flexible transparent electrode (1)；
(2) the raw material slurry of electroluminescence layer is coated in the flexible transparent electrode (1) obtained after the step (1) using print process
Liquid forms electroluminescence layer (2) after carrying out UV solidification；
(3) raw slurry of layer of cloth, shape are applied on the electroluminescence layer (2) obtained after the step (2) using print process
At insulating layer (3)；
(4) on the insulating layer (3) obtained after the step (3), then it is bonded the flexibility obtained behind a piece of (1) by the step thoroughly
Prescribed electrode (1) obtains the ultrathin flexible EL sheet after carrying out UV solidification.
8. preparation method according to claim 7, which is characterized in that include poly- (3,4- Ethylenedioxy Thiophene)-poly- (benzene
Vinyl sulfonic acid) and silver nanowires mix slurry, be made of as mass fraction water and following each component: poly- (3,4- Asia second
Propylenedioxythiophene)-poly- (styrene sulfonic acid) 0.05%~3.00%, silver nanowires 0.01%~4.00%, dispersing agent 0.05%
~1.00%, levelling agent 0.05%~1.00%, defoaming agent 0.05%~1.00%, hardening agent 0.05%~1.00%, silane
Coupling agent 0.05%~1.00%.
9. preparation method according to claim 7, which is characterized in that the print process include slot coated, blade coating,
Any one or a few in bar blade coating, silk-screen printing, inkjet printing and spraying.
10. the preparation method according to any one of claim 7~9, which is characterized in that the cured amount of radiation > of UV
200mJ/cm2, the UV cured time is 3-30s.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112757776A (en) * | 2021-01-12 | 2021-05-07 | 北京大华博科智能科技有限公司 | Ink-jet printing luminous imaging system and process |
| CN112838170A (en) * | 2020-12-31 | 2021-05-25 | 湖南鼎一致远科技发展有限公司 | Electroluminescent device of polyimide substrate and preparation method |
| JP2021150588A (en) * | 2020-03-23 | 2021-09-27 | 株式会社リコー | Photoelectric conversion element, photoelectric conversion module, electronic device, and power supply module |
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| CN101193472A (en) * | 2006-11-20 | 2008-06-04 | 比亚迪股份有限公司 | EL film sheet and its making method, and mobile phone keyboard with this film sheet |
| CN104575698A (en) * | 2013-10-09 | 2015-04-29 | 精磁科技股份有限公司 | transparent conductive film structure |
| CN108269645A (en) * | 2017-12-11 | 2018-07-10 | 珠海纳金科技有限公司 | A kind of silk-screen electrically conducting transparent slurry and its preparation method and application |
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| CN101193472A (en) * | 2006-11-20 | 2008-06-04 | 比亚迪股份有限公司 | EL film sheet and its making method, and mobile phone keyboard with this film sheet |
| CN104575698A (en) * | 2013-10-09 | 2015-04-29 | 精磁科技股份有限公司 | transparent conductive film structure |
| CN108269645A (en) * | 2017-12-11 | 2018-07-10 | 珠海纳金科技有限公司 | A kind of silk-screen electrically conducting transparent slurry and its preparation method and application |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2021150588A (en) * | 2020-03-23 | 2021-09-27 | 株式会社リコー | Photoelectric conversion element, photoelectric conversion module, electronic device, and power supply module |
| CN112838170A (en) * | 2020-12-31 | 2021-05-25 | 湖南鼎一致远科技发展有限公司 | Electroluminescent device of polyimide substrate and preparation method |
| CN112757776A (en) * | 2021-01-12 | 2021-05-07 | 北京大华博科智能科技有限公司 | Ink-jet printing luminous imaging system and process |
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Application publication date: 20190920 |