CN106711356B - A kind of reduction OLED water, the method for oxygen permeability - Google Patents
A kind of reduction OLED water, the method for oxygen permeability Download PDFInfo
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- CN106711356B CN106711356B CN201611202497.0A CN201611202497A CN106711356B CN 106711356 B CN106711356 B CN 106711356B CN 201611202497 A CN201611202497 A CN 201611202497A CN 106711356 B CN106711356 B CN 106711356B
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- H—ELECTRICITY
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- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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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
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
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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
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/842—Containers
- H10K50/8426—Peripheral sealing arrangements, e.g. adhesives, sealants
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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
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/844—Encapsulations
Abstract
The present invention provides a kind of reduction OLED water, the method for oxygen permeability, comprises the following steps：A, metal foil is prepared by constraining sintering process；B, it is 5 10 μm of hydrophobic polymer layers to be coated with a layer thickness on metal foil, obtains OLED substrate；C, bonded in the another side for the OLED substrate that step B is obtained with OLED by glue, OLED is coated, then the both ends of metal foil substrate are continuously externally turned down at least 2 times and using glue bonding foldable plane respectively, obtain low water, the OLED of oxygen permeability, the present invention is packaged protection with reference to organic glue material using the extension of metal foil to the periphery of organic electroluminescence device, and the both ends of metal flexible substrate are continuously externally repeatedly bent, effectively solves the problems, such as the water/Oxygen permeation on bottom and periphery simultaneously, reduce the influence of steam and oxygen to electrode material and luminous organic material, be advantageous to slow down device aging, extend device lifetime, meet requirement of the organic electroluminescence device to substrate.
Description
Technical field
The present invention relates to Organic Light Emitting Diode technical field, and OLED water, Oxygen permeation are reduced more particularly to one kind
The method of rate.
Background technology
Organic Light Emitting Diode is OLED（Organic Light Emitting Diode）Due to itself it is intrinsic the advantages of,
Such as self-luminous, brightness height, wide viewing angle, response be fast, low energy consumption, can make flexible display apparatus（Such as Fig. 1）Deng, it is considered to be instead of
The preferable Display Technique of future generation of liquid crystal technology.Organic electroluminescent diode apparatus is because having numerous outstanding advantages, in flat board
Display has bright prospects with planar light source field.Flexible OLED is even more following development trend, will be widely used in
Wearable device.However, the development of OLED product technologies is also restricted by device lifetime, light extraction efficiency unfavorable factor.
The rigid glass substrates that the existing main part of OLED display uses, it has hypotonicity to oxygen and steam,
Being capable of preferable protection device.And the flexible substrate applied to flexible organic electroluminescent device is mainly polymeric liner at present
Bottom, polymer substrate is frivolous, firm and pliability is splendid, but because the making temperature of polymer substrate is low, and its free volume
Fraction is smaller and segment mean freedom is larger, and high heat-induced shrinkage rate and high gas permeability determine it easily by water and oxygen
Impervious, shorten the life-span of organic luminescent device, to solve the problems, such as polymer substrate water/Oxygen permeation, side the most frequently used at present
Method is that the barrier layer for stopping water/Oxygen permeation is formed on polymer substrate, although forming barrier layer on polymer substrate
Method can obtain preferable water/oxygen blocking effect, however, the above method be both needed to it is multiple by multiple deposition steps, technique
It is miscellaneous, and may have a negative impact to the optics and mechanical performance of organic electroluminescence device, especially with organic layer-
The inorganic layer elasticity included during inorganic layer multi-layer barrier is relatively low, is unfavorable for scattered mechanical stress and larger cracking wind be present
Danger, is easy to cause water/oxygen to enter device by crack, in addition, flexible organic electroluminescent device periphery equally exists water/oxygen
The problem of infiltration, thus, it is still necessary to the bottom of improved flexible package substrate and method for packing to flexible organic electroluminescent device
Portion and periphery are packaged, and ensure that flexible organic electroluminescent device has good pliability and waterproof/oxygen permeability simultaneously
Can, to meet the requirement to device performance and life-span.
Publication No. 104538556A Chinese patent《Flexible OLED substrates and Encapsulation Methods for Flexible OLED》, it includes：
Tinsel is set on polymeric layer, and the insulation glue material layer being arranged on tinsel；The surface chi of the tinsel
The very little surface size more than polymeric layer, the surface size of polymeric layer are more than the surface size of insulation glue material layer.Tinsel
With exclusion of water, oxygen ability and flexible bending ability, but when the substrate encapsulates OLED, still there are water, oxygen on composition surface
The risk penetrated, it have impact on the life-span of OLED.
The A of Publication No. CN 102820432 Chinese patent《Organic luminescent device and its manufacture method》Disclose one kind
The substrate of organic luminescent device, Publication No. CN103337595 A Chinese patent are used as by the use of metal foil and glass substrate
《Flexible package substrate and its manufacture method and the OLED encapsulation method using the substrate》It is middle to use metal foil and polymeric layer
Bonding is used as luminescent device substrate, and tinsel can show excellent pliability when its thickness reaches below 100 μm,
And with polymer phase ratio, Good Heat-resistance and thermal coefficient of expansion is very low, the problem of particularly infiltration in the absence of water and oxygen,
It is highly suitable for making the backing material of flexible organic electroluminescent device, but obtainable tinsel material at present, its table
Surface roughness is about Ra=0.6 μm or so, to make TFT devices on this surface and be nearly impossible, just because of
The reason for such so that though tinsel has a many merits, and it is all slower than other materials in current practice and development.
If the problem of can solve the problem that metal foil surface roughness can be such that tinsel substituted polymer and glass substrate turns into not
Carry out the main material of flexible display, so as to accelerate the development process of flexible display.
The content of the invention
For OLED in the prior art to water, oxygen permeability is high the defects of, the invention provides one kind reduce
The method of OLED water, oxygen permeability so that OLED encapsulating structure has good water, oxygen barrier properties, effectively keeps away
The erosion of water oxygen is exempted from, so as to effectively extend the service life of OLED.
To solve the above problems, the present invention uses following technical scheme：
A kind of reduction OLED water, the method for oxygen permeability, comprise the following steps：
A, metal foil is prepared by constraining sintering process；
B, it is 5-10 μm of hydrophobic polymer layer to be coated with a layer thickness on metal foil, obtains OLED substrate；
C, bonded in the another side of the obtained OLED substrates of step B with OLED by glue, OLED is carried out
Cladding, then the both ends of metal foil substrate are continuously externally turned down at least 2 times respectively and using glue bonding foldable plane, obtained low
The OLED of water, oxygen permeability.
Wherein, the metal foil is one kind in aluminium foil, copper foil, goldleaf or its composite metallic material.
Wherein, the thickness of the metal foil is 5-100 μm, preferably 20 ~ 72 μm.
Wherein, the OLED includes OLED display and metal foil substrate, the both ends difference of the metal foil substrate
Continuous externally turnover at least 2 times, and foldable plane is bonded by glue.
Wherein, the hydrophobic polymer layer is acrylamide-allyl cyclodextrin-acrylamide acetic acid copolymer layer,
The molecular weight of the acrylamide-allyl cyclodextrin-acrylamide acetic acid copolymer is 3 × 102~5×105。
Wherein, in the acrylamide-allyl cyclodextrin-acrylamide acetic acid copolymer each monomer mass content
For 79.2 ~ 94.2 parts of acrylamide monomer, 5 ~ 20 parts of pi-allyl cyclodextrin monomer, 0.3 ~ 1.5 part of acrylamido acetic acid monomer.
Wherein, in the acrylamide-allyl cyclodextrin-acrylamide acetic acid copolymer each monomer mass content
For 83.5 ~ 91.2 parts of acrylamide monomer, 8.7 ~ 15.3 parts of pi-allyl cyclodextrin monomer, acrylamido acetic acid monomer 0.6 ~
0.8 part.
Wherein, inorganic non-metallic is also contained in the acrylamide-allyl cyclodextrin-acrylamide acetic acid copolymer
One or more compositions in particle, age resistor, light stabilizer, coupling agent, fire retardant, mould inhibitor.
Wherein, the inorganic non-metallic particle is one in silica, carborundum, silicon nitride, titanium dioxide, aluminum oxide
Kind or numerous compositions.
Wherein, adhesive is adhesive for polyurethane, epoxy resin adhesive, acrylic resin adhesive, unsaturated polyester (UP)
The combination of one or both of Resin adhesive.
In the prior art using the plastics of light weight as OLED flexible substrate, although reducing OLED production cost,
But because it has higher heat-induced shrinkage rate and higher gas permeability, OLED service life is caused seriously by shadow
Ring, although being at present the service life of limitation flexible OLED devices, using metal foil as substrate, and OLED is sealed
Dress, makes its permeability rate and oxygen transmission rate necessarily be reduced, but device substrate is at a relatively high to the permeability of steam and oxygen.In view of
This, the present invention provides a kind of method by changing substrat structure and backing material, and reach reduction OLED oozes oxygen rate
And the defects of permeability rate, the periphery of organic electroluminescence device is sealed with reference to organic glue material using the extension of metal foil
Protection is filled, and the both ends of metal flexible substrate are continuously externally repeatedly bent, exposed glue layer is contacted into bread with metal foil
Containing the invasion and attack that internally, slow down extraneous water, oxygen, while effectively solves the problems, such as the water/Oxygen permeation on bottom and periphery；In gold
The surface of category substrate also coats a floor height molecular polymer layer, and the polymeric layer has hydrophobicity, also has very low seepage of water,
The infiltration of water can be effectively prevented, plays a part of electric insulation and overcomes the problem of metal foil surface roughness is larger, is met
Requirement of the organic electroluminescence device to substrate, the influence of steam and oxygen to electrode material and luminous organic material is reduced, is had
Beneficial to slow down device aging, extend device lifetime.
Further, in order that metal foil has relatively low oxygen flow, water penetration, the preferred aluminium foil of metal foil of the invention, copper
One kind of paper tinsel and goldleaf or its compound, in the case of ensureing the flexibility of metal foil without influenceing its mechanical strength, this hair
The thickness of bright middle metal foil is preferably 5-100 μm, more preferably 20 ~ 72 μm.
Further, polymeric layer is made to have hydrophobicity and low permeability concurrently, the polymer is preferably acrylamide-allyl
Cyclodextrin-acrylamide acetic acid copolymer layer, further to improve its performance, the polymer molecular weight is preferably 3 ×
102~5×105。
Further, to make polymeric layer that there is good insulating properties, mechanical performance and resistance to ag(e)ing, polymeric layer is entered
Row further improves, and adds additive in the polymer, and the additive includes but is not limited to inorganic non-metallic particle, prevented always
One or more compositions in agent, light stabilizer, coupling agent, fire retardant, mould inhibitor, wherein inorganic non-metallic particle are preferred
For one or more compositions in silica, carborundum, silicon nitride, titanium dioxide, aluminum oxide.
Use water vapour permeability tester (blue streak science and technology, W3/0120 types) and the OTR oxygen transmission rate tester (U.S.
MOCON, Ox-tran2/21 type), by the low water of the present invention, oxygen permeability OLED and the method system according to documents 1
The OLED of the standby metallized metal substrate of OLED, side without encapsulation is compared, in permeability rate, oxygen transmission rate and service life
Etc. have a clear superiority, as shown in table 1.
Documents 1：《Flexible OLED substrates and Encapsulation Methods for Flexible OLED》, application number：201410727845.0 application
Day：2014-12-03.
Table 1：
A kind of reduction OLED water of the present invention, the method for oxygen permeability, compared with prior art, the characteristics of it is protruded and
Excellent effect is：
1st, guarantor is packaged to the periphery of organic electroluminescence device with reference to organic glue material using the extension of metal foil
Shield, and by the continuously externally repeatedly bending of the both ends of metal flexible substrate, while the water/oxygen on effective solution bottom and periphery oozes
Saturating problem；
2nd, a floor height molecular polymer layer is also coated on the surface of metal substrate, the polymeric layer has hydrophobicity, also had
There is very low seepage of water, can effectively prevent the infiltration of water, play a part of electric insulation and overcome metal foil surface roughness
The problem of larger, meet requirement of the organic electroluminescence device to substrate, reduce steam and oxygen to electrode material and organic hair
The influence of luminescent material, be advantageous to slow down device aging, extend device lifetime；
3rd, it is copolymerized using the acrylamide-allyl cyclodextrin-acrylamide guanidine-acetic acid for having hydrophobicity and low permeability concurrently
Nitride layer avoids absorption of the steam to device, reduces the contact rate of water and device, reach the mesh for reducing steam infiltration as figure layer
's；
4th, the present invention reduces OLED water, the method for oxygen permeability, effectively reduces the permeability rate and thoroughly of OLED
Oxygen rate, significantly improve the service life of OLED.
Brief description of the drawings
Further clearly to reduce the method for OLED water, oxygen permeability, illustrated by accompanying drawing.
Fig. 1 is shown OLED backing material schematic diagrames；
1 is tinsel in figure, the polymeric layer of 2- hydrolysis, 3- insulating cement water layers, 4-OLED displays.
Embodiment
Below by way of embodiment, the present invention is described in further detail, but this should not be interpreted as to the present invention
Scope be only limitted to following example.In the case where not departing from above method thought of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
A kind of reduction OLED water, the method for oxygen permeability, comprise the following steps：
A, the aluminium foil that thickness is 55 μm is prepared by constraining sintering process；
B, in the pi-allyl cyclodextrin aqueous solution that 432 mL concentration are 0.01g/mL, addition concentration is 0.06mL
0.5g/mL acrylamide and 1mL concentration is 0.5g/mL acrylamide guanidine-acetic acids, and it is 0.01g/mL then to sequentially add concentration
Potassium peroxydisulfate and 0.01g/mL sodium hydrogensulfites, be well mixed after, 10 ~ 30min of inflated with nitrogen, then at 10 ~ 15 DEG C reaction 12 ~
20h, molecular weight is obtained as 3 × 102~5×105Acrylamide-allyl cyclodextrin-acrylamide acetic acid copolymer emulsion；
C, added in step B acrylamide-allyl cyclodextrin-acrylamide acetic acid copolymer emulsion inorganic non-
Metallic particles, age resistor, light stabilizer, coupling agent, fire retardant, mould inhibitor, after stirring, obtain mixed system；
D, the mixed system for the step C that a layer thickness is 5-10 μm is coated with metal foil, obtains OLED substrate；
E, bonded in the another side of the obtained OLED substrates of step D with OLED by adhesive for polyurethane, to OLED
Device is coated, and then the both ends of metal foil substrate are continuously externally turned down 3 times respectively and using glue bonding foldable plane, obtained
To the OLED of low water, oxygen permeability.
Embodiment 2
A kind of reduction OLED water, the method for oxygen permeability, comprise the following steps：
A, copper-golden composite metallic material that thickness is 72 μm is prepared by constraining sintering process；
B, in the pi-allyl cyclodextrin aqueous solution that 453mL concentration is 0.01g/mL, addition concentration is 0.06mL 0.5g/
ML acrylamide and 1.2mL concentration is 0.5g/mL acrylamide guanidine-acetic acids, and it is 0.01g/mL's then to sequentially add concentration
Potassium peroxydisulfate and 0.01g/mL sodium hydrogensulfites, be well mixed after, 10 ~ 30min of inflated with nitrogen, then at 10 ~ 15 DEG C reaction 12 ~
20h, molecular weight is obtained as 3 × 102~5×105Acrylamide-allyl cyclodextrin-acrylamide acetic acid copolymer emulsion；
C, carbonization is added in step B acrylamide-allyl cyclodextrin-acrylamide acetic acid copolymer emulsion
Silicon, silicon nitride, age resistor, light stabilizer, coupling agent, fire retardant, mould inhibitor, after stirring, obtain mixed system；
D, the mixed system for the step C that a layer thickness is 5-10 μm is coated with metal foil, obtains OLED substrate；
E, bonded in the another side of the obtained OLED substrates of step D with OLED by epoxy resin adhesive, it is right
OLED is coated, and then the both ends of metal foil substrate are continuously externally turned down 3 times and using glue bonding doubling respectively
Face, obtain the OLED of low water, oxygen permeability.
Embodiment 3
A kind of reduction OLED water, the method for oxygen permeability, comprise the following steps：
A, copper-golden composite metallic material paper tinsel that thickness is 20 μm is prepared by constraining sintering process；
B, in the pi-allyl cyclodextrin aqueous solution that 420 mL concentration are 0.01g/mL, adding 0.08mL concentration is
0.5g/mL acrylamide and 0.87 mL concentration are 0.5g/mL acrylamide guanidine-acetic acids, and then sequentially adding concentration is
0.01g/mL potassium peroxydisulfate and 0.01g/mL sodium hydrogensulfites, after being well mixed, 10 ~ 30min of inflated with nitrogen, then at 10 ~ 15 DEG C
12 ~ 20h of lower reaction, molecular weight is obtained as 3 × 102~5×105Acrylamide-allyl cyclodextrin-acrylamide guanidine-acetic acid be total to
Copolymer emulsion；
C, nitridation is added in step B acrylamide-allyl cyclodextrin-acrylamide acetic acid copolymer emulsion
Silicon, titanium dioxide, aluminum oxide, age resistor, light stabilizer, coupling agent, fire retardant, mould inhibitor, after stirring, obtain mixture
System；
D, the mixed system for the step C that a layer thickness is 5-10 μm is coated with metal foil, obtains OLED substrate；
E, acrylic resin adhesive and polyurethane are passed through with OLED in the another side of the obtained OLED substrates of step D
The mixed system bonding of adhesive, is coated to OLED, then to the both ends of metal foil substrate respectively continuously to turning up
Roll over 2 times and using glue bonding foldable plane, obtain the OLED of low water, oxygen permeability.
Embodiment 4
A kind of reduction OLED water, the method for oxygen permeability, comprise the following steps：
A, the goldleaf that thickness is 60 μm is prepared by constraining sintering process；
B, in the pi-allyl cyclodextrin aqueous solution that 456mL concentration is 0.01g/mL, it is 0.5g/ to add 0.08mL concentration
ML acrylamide and concentration is 1.53 mL 0.5g/mL acrylamide guanidine-acetic acids, and it is 0.01g/mL then to sequentially add concentration
Potassium peroxydisulfate and 0.01g/mL sodium hydrogensulfites, be well mixed after, 10 ~ 30min of inflated with nitrogen, then at 10 ~ 15 DEG C reaction 12 ~
20h, molecular weight is obtained as 3 × 102~5×105Acrylamide-allyl cyclodextrin-acrylamide acetic acid copolymer emulsion；
C, titanium dioxide is added in step B acrylamide-allyl cyclodextrin-acrylamide acetic acid copolymer emulsion
Silicon, carborundum, age resistor, light stabilizer, coupling agent, fire retardant, mould inhibitor, after stirring, obtain mixed system；
D, the mixed system for the step C that a layer thickness is 5-10 μm is coated with metal foil, obtains OLED substrate；
E, bonded in the another side of the obtained OLED substrates of step D with OLED by acrylic resin adhesive, it is right
OLED is coated, and then the both ends of metal foil substrate are continuously externally turned down 2 times and using glue bonding doubling respectively
Face, obtain the OLED of low water, oxygen permeability.
Embodiment 5
A kind of reduction OLED water, the method for oxygen permeability, comprise the following steps：
A, the aluminium foil that thickness is 5 μm is prepared by constraining sintering process；
B, in the pi-allyl cyclodextrin aqueous solution that 396 mL concentration are 0.01g/mL, adding 0.15 mL concentration is
0.5g/mL acrylamide and concentration is 2 mL 0.5g/mL acrylamide guanidine-acetic acids, and it is 0.01g/ then to sequentially add concentration
ML potassium peroxydisulfate and 0.01g/mL sodium hydrogensulfites, after being well mixed, 10 ~ 30min of inflated with nitrogen, then reacted at 10 ~ 15 DEG C
12 ~ 20h, molecular weight is obtained as 3 × 102~5×105Acrylamide-allyl cyclodextrin-acrylamide acetic acid copolymer breast
Liquid；
C, carbonization is added in step B acrylamide-allyl cyclodextrin-acrylamide acetic acid copolymer emulsion
Silicon, age resistor, light stabilizer, coupling agent, fire retardant, mould inhibitor, after stirring, obtain mixed system；
D, the mixed system for the step C that a layer thickness is 5-10 μm is coated with metal foil, obtains OLED substrate；
E, glued in the another side of the obtained OLED substrates of step D with OLED by unsaturated polyester resin adhesive
Close, OLED is coated, then the both ends of metal foil substrate are continuously externally turned down 2 times respectively and are bonded using glue
Foldable plane, obtain the OLED of low water, oxygen permeability.
Embodiment 6
A kind of reduction OLED water, the method for oxygen permeability, comprise the following steps：
A, the goldleaf that thickness is 100 μm is prepared by constraining sintering process；
B, in the pi-allyl cyclodextrin aqueous solution that 470 mL concentration are 0.01g/mL, adding 0.03mL concentration is
0.5g/mL acrylamide and concentration is 0.5 mL 0.5g/mL acrylamide guanidine-acetic acids, and then sequentially adding concentration is
0.01g/mL potassium peroxydisulfate and 0.01g/mL sodium hydrogensulfites, after being well mixed, 10 ~ 30min of inflated with nitrogen, then at 10 ~ 15 DEG C
12 ~ 20h of lower reaction, molecular weight is obtained as 3 × 102~5×105Acrylamide-allyl cyclodextrin-acrylamide guanidine-acetic acid be total to
Copolymer emulsion；
C, titanium dioxide is added in step B acrylamide-allyl cyclodextrin-acrylamide acetic acid copolymer emulsion
Titanium, age resistor, light stabilizer, coupling agent, fire retardant, mould inhibitor, after stirring, obtain mixed system；
D, the mixed system for the step C that a layer thickness is 5-10 μm is coated with metal foil, obtains OLED substrate；
E, glued in the another side of the obtained OLED substrates of step D with OLED by unsaturated polyester resin adhesive
Close, OLED is coated, then the both ends of metal foil substrate are continuously externally turned down 2 times respectively and are bonded using glue
Foldable plane, obtain the OLED of low water, oxygen permeability.
Use water vapour permeability tester (blue streak science and technology, W3/0120 types) and the OTR oxygen transmission rate tester (U.S.
MOCON, Ox-tran2/21 type), measure the embodiment of the present invention 1 ~ 6 OLED in permeability rate, oxygen transmission rate and use the longevity
Life, as shown in table 2.
Table 2：
Claims (9)
1. a kind of reduction OLED water, the method for oxygen permeability, it is characterised in that comprise the following steps：
A, metal foil is prepared by constraining sintering process；
B, it is 5-10 μm of hydrophobic polymer layer to be coated with a layer thickness on metal foil, obtains OLED substrate；
C, bonded in the another side of the obtained OLED substrates of step B with OLED by glue, OLED coated,
Then the both ends of metal foil substrate are continuously externally turned down at least 2 times and using glue bonding foldable plane respectively, will be exposed
Glue layer is included in inside with metal foil contact surface, obtains the OLED of low water, oxygen permeability.
2. a kind of reduction OLED water as claimed in claim 1, the method for oxygen permeability, it is characterised in that the metal
Paper tinsel is one kind in aluminium foil, copper foil, goldleaf or its composite metallic material.
3. a kind of reduction OLED water as claimed in claim 1, the method for oxygen permeability, it is characterised in that the metal
The thickness of paper tinsel is 5-100 μm.
4. a kind of reduction OLED water as claimed in claim 1, the method for oxygen permeability, it is characterised in that described hydrophobic
Polymeric layer is acrylamide-allyl cyclodextrin-acrylamide acetic acid copolymer layer, the acrylamide-allyl basic ring
The molecular weight of dextrin-acrylamide acetic acid copolymer is 3 × 102~5 × 105。
5. a kind of reduction OLED water as claimed in claim 4, the method for oxygen permeability, it is characterised in that the propylene
In acid amides-allyl cyclodextrin-acrylamide acetic acid copolymer the mass content of each monomer be acrylamide monomer 79.2~
94.2 parts, 5~20 parts of pi-allyl cyclodextrin monomer, 0.3~1.5 part of acrylamido acetic acid monomer.
6. a kind of reduction OLED water as claimed in claim 5, the method for oxygen permeability, it is characterised in that the propylene
In acid amides-allyl cyclodextrin-acrylamide acetic acid copolymer the mass content of each monomer be acrylamide monomer 83.5~
91.2 parts, 8.7~15.3 parts of pi-allyl cyclodextrin monomer, 0.6~0.8 part of acrylamido acetic acid monomer.
7. a kind of reduction OLED water as claimed in claim 5, the method for oxygen permeability, it is characterised in that the propylene
In acid amides-allyl cyclodextrin-acrylamide acetic acid copolymer also containing inorganic non-metallic particle, age resistor, light stabilizer,
One or more compositions in coupling agent, fire retardant, mould inhibitor.
8. a kind of reduction OLED water as claimed in claim 7, the method for oxygen permeability, it is characterised in that described inorganic
Non-metallic particle is one or more compositions in silica, carborundum, silicon nitride, titanium dioxide, aluminum oxide.
9. a kind of reduction OLED water as claimed in claim 1, the method for oxygen permeability, it is characterised in that the glue
For one kind in adhesive for polyurethane, epoxy resin adhesive, acrylic resin adhesive, unsaturated polyester resin adhesive or
Two kinds of combination.
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| CN103337595B (en) * | 2013-07-04 | 2016-04-06 | 上海和辉光电有限公司 | The OLED encapsulation method of flexible package substrate and manufacture method and this substrate of use |
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