CN109216424A - A kind of flexible display substrates protective film and flexible base board - Google Patents
A kind of flexible display substrates protective film and flexible base board Download PDFInfo
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- CN109216424A CN109216424A CN201811090039.1A CN201811090039A CN109216424A CN 109216424 A CN109216424 A CN 109216424A CN 201811090039 A CN201811090039 A CN 201811090039A CN 109216424 A CN109216424 A CN 109216424A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
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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
- H10K50/846—Passivation; Containers; Encapsulations comprising getter material or desiccants
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/88—Dummy elements, i.e. elements having non-functional features
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Abstract
The present invention relates to field of display technology; disclose a kind of flexible display substrates protective film and flexible base board; in the flexible display substrates protective film; at least one layer of inorganic barrier layer including the first flexible substrates and the second flexible substrates that are oppositely arranged and between the first flexible substrates and the second flexible substrates; at least one layer of inorganic barrier layer is equipped with selfreparing water absorption layer, and selfreparing water absorption layer includes multiple selfreparing units.In above-mentioned flexible display substrates protective film; at least one layer of inorganic barrier layer is equipped between first flexible substrates and the second flexible substrates; and the multiple selfreparing water absorption layers of at least one layer of inorganic barrier layer; every layer of selfreparing water absorption layer includes multiple selfreparing units; when flexible display substrates bending makes inorganic barrier layer generate crack; selfreparing unit can will be repaired by the crack of selfreparing unit; to prevent water oxygen from entering in organic electroluminescence device along crack; the encapsulation performance of flexible display substrates is improved, and then improves the service life of flexible display substrates.
Description
Technical field
The present invention relates to field of display technology, in particular to a kind of flexible display substrates protective film and flexible base board.
Background technique
OLED is the display lighting engineering having gradually developed in recent years, especially in display industry, since it is with Gao Xiang
Answer, high contrast, can flexibility the advantages that, be considered as possessing broad application prospect.Flexible display substrates are with polyimides
Or have many advantages, such as height flexible plate material made of the materials such as polyester film, with light-weight, thickness is thin.But itself
Barrier steam and oxygen ability it is weaker, since OLED device is under the action of steam and oxygen, it may appear that corrosion and damage
Therefore barrier layer usually is added when making flexible base board in phenomenon, to prevent water oxygen to be diffused to OLED device direction.
Barrier layer mostly uses inorganic material to be made in the prior art, in flexible device bend, is easy the effect in stress
Under there is crack, water oxygen can penetrate into device inside by crack, cause the decline of encapsulation performance.
Summary of the invention
The present invention provides a kind of flexible display substrates protective film and flexible base board, lead in the flexible display substrates protective film
It crosses the crack generated when flexible display substrates are bent by selfreparing water absorption layer to repair, prevents water oxygen from entering Organic Electricity along crack
In electroluminescence device, the encapsulation performance of flexible display substrates is improved.
In order to achieve the above objectives, the present invention the following technical schemes are provided:
A kind of flexible display substrates protective film, including the first flexible substrates and the second flexible substrates that are oppositely arranged and
At least one layer of inorganic barrier layer between first flexible substrates and the second flexible substrates, at least one layer of inorganic resistance
Interlayer is equipped with the selfreparing water absorption layer along inorganic barrier layer extension directional spreding, and the selfreparing water absorption layer includes that multiple same layers are set
The selfreparing unit set.
It is equipped in above-mentioned flexible display substrates protective film, between the first flexible substrates and the second flexible substrates at least one layer of inorganic
Barrier layer, and at least one layer of inorganic barrier layer is equipped with selfreparing water absorption layer, every layer of selfreparing water absorption layer includes multiple selfreparing lists
Member, when flexible display substrates bending makes inorganic barrier layer generate crack, selfreparing unit can be by splitting by selfreparing unit
Seam is repaired, and to prevent water oxygen from entering in organic electroluminescence device along crack, improves the encapsulation of flexible display substrates
Can, and then improve the service life of flexible display substrates.
Preferably, multilayer inorganic barrier layer is equipped between first flexible substrates and second flexible substrates, in which:
Selfreparing water absorption layer is equipped in each layer inorganic barrier layer, and each selfreparing water absorption layer is described
The orthographic projection of one flexible substrates is overlapped with second flexible substrates in the orthographic projection of the first flexible substrates；Or,
In addition to the inorganic barrier layer of top layer, it is equipped with selfreparing water absorption layer in each layer inorganic barrier layer, and
Each selfreparing water absorption layer is in the orthographic projection of first flexible substrates and second flexible substrates in the first flexible substrates
Orthographic projection be overlapped.
Preferably, each selfreparing unit is circular configuration or polygonized structure.
Preferably, each selfreparing unit is positive hexagonal structure.
Preferably, three layers of inorganic barrier layer are equipped between first flexible substrates and second flexible substrates,
In, projection of each selfreparing unit in first flexible substrates does not overlap.
Preferably, the selfreparing water absorption layer is by the first composite material, the second composite material, konjaku glucomannan-propylene
Sour graft copolymer and sweet dew alcohol radical selfreparing gel are made, wherein first composite material includes hydrophilic monomer, seaweed
Sour sodium and nanoclay, second composite material include konjaku glucomannan, polyacrylamide and nanoclay.
Preferably, the thickness range of the selfreparing water absorption layer is 0.05 μm to 5 μm.
Preferably, the inorganic barrier layer is made of one or more of SiNx, SiO2, SiC, Al2O3, ZnS, ZnO.
Preferably, the thickness range of the inorganic barrier layer is 0.1 μm to 5 μm.
The present invention also provides a kind of flexible base boards, including any one Flexible Displays base as described in the above technical scheme
Plate protective film.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the frame mode one of flexible display substrates protective film provided by the invention；
Fig. 2 is the structural schematic diagram of the frame mode two of flexible display substrates protective film provided by the invention；
Fig. 3 is the structural schematic diagram of the first selfreparing water absorption layer in flexible display substrates protective film provided by the invention；
Fig. 4 is the structural schematic diagram of the second selfreparing water absorption layer in flexible display substrates protective film provided by the invention；
Fig. 5 is the structural schematic diagram of third selfreparing water absorption layer in flexible display substrates protective film provided by the invention；
Fig. 6 is the first selfreparing water absorption layer in flexible display substrates protective film provided by the invention, the second selfreparing water suction
The structural schematic diagram that layer and third selfreparing water absorption layer project in the first flexible substrates.
Icon: the first flexible substrates of 1-；2- inorganic barrier layer；3- selfreparing water absorption layer；31- selfreparing unit；32- first
Selfreparing water absorption layer；33- the second selfreparing water absorption layer；34- third selfreparing water absorption layer；The second flexible substrates of 4-.
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.
Referring to FIG. 1, flexible display substrates protective film provided in an embodiment of the present invention, first including being oppositely arranged is flexible
Substrate 1 and the second flexible substrates 4 and the inorganic resistance of at least one layer between the first flexible substrates 1 and the second flexible substrates 4
Interlayer 2, at least one layer of inorganic barrier layer 2 are equipped with multiple selfreparing water absorption layers 3 along 2 extension directional spreding of inorganic barrier layer, from
Repair the selfreparing unit 31 that water absorption layer 3 includes the setting of multiple same layers.
At least one layer of nothing is equipped in above-mentioned flexible display substrates protective film, between the first flexible substrates 1 and the second flexible substrates 4
Machine barrier layer 2, and selfreparing water absorption layer 3 is equipped at least one layer of inorganic barrier layer 2, every layer of selfreparing water absorption layer 3 includes multiple
Selfreparing unit 31, when flexible display substrates bending makes inorganic barrier layer 2 generate crack, selfreparing unit 31 can will pass through certainly
The crack for repairing unit 31 is repaired, and to prevent water oxygen from entering in organic electroluminescence device along crack, is improved flexible aobvious
Show the encapsulation performance of substrate, and then improves the service life of flexible display substrates.
There are following two modes for above-mentioned inorganic barrier layer 2 and the structure of selfreparing water absorption layer 3:
Mode one:
As shown in Figure 1, being equipped with multilayer inorganic barrier layer 2 between the first flexible substrates 1 and the second flexible substrates 4, in which:
Selfreparing water absorption layer 3 is equipped in each layer of inorganic barrier layer 2, and each selfreparing water absorption layer 3 is in the first flexible base
Orthographic projection of the orthographic projection at bottom 1 with the second flexible substrates 4 in the first flexible substrates 1 is overlapped.
Mode two:
As shown in Fig. 2, being equipped with selfreparing water absorption layer in each layer of inorganic barrier layer 2 in addition to the inorganic barrier layer of top layer
3, and each selfreparing water absorption layer 3 the first flexible substrates 1 orthographic projection and the second flexible substrates 4 the first flexible substrates 1 just
Projection is overlapped.
In mode one and mode two, it is soft that selfreparing water absorption layer 3 covers first in the direction perpendicular to the first flexible substrates 1
Property substrate 1, selfreparing water absorption layer 3 cover the first flexible substrates 1 each region, guarantee each region can be achieved crack repair.
Fig. 3 is the structural schematic diagram of the first selfreparing water absorption layer 32；Fig. 4 is the structural representation of the second selfreparing water absorption layer 33
Figure；Fig. 5 is the structural schematic diagram of third selfreparing water absorption layer 34；Fig. 6 is the first selfreparing water absorption layer 32, the second selfreparing water suction
The structural schematic diagram that layer 33 and third selfreparing water absorption layer 34 project in the first flexible substrates 1.
As shown in Figures 3 to 6, in the present embodiment, being successively arranged between the first flexible substrates 1 and the second flexible substrates 4 has
The first inorganic barrier layer, the second inorganic barrier layer and the third inorganic barrier layer of selfreparing water absorption layer 3, wherein the first inorganic resistance
It is equipped with the first selfreparing water absorption layer 32 in interlayer, is equipped with the second selfreparing water absorption layer 33 in the second inorganic barrier layer, third is inorganic
Third selfreparing water absorption layer 34 is equipped in barrier layer, each selfreparing unit 31 in each selfreparing water absorption layer is spaced setting, and each
Selfreparing unit 31 is complementary between the projection no overlap and adjacent projections of the first flexible substrates 1, to form the projection being staggered
Structure, so that the area of projection can cover each region of the first flexible substrates 1.
Three groups of inorganic barriers with selfreparing water absorption layer are equipped between above-mentioned first flexible substrates 1 and the second flexible substrates 4
Layer 2 is formed between no overlap and adjacent projections in the projection to the first flexible substrates 1 of selfreparing unit 31 in each inorganic barrier layer 2
Complementary projection structure, to reach selfreparing water absorption layer 3 in the projection and the projection of the second flexible substrates 4 of the first flexible substrates 1
The effect of coincidence, on the one hand, since the bonding force of selfreparing water absorption layer 3 is poor, by respectively reviewing one's lessons by oneself in each selfreparing water absorption layer
Multiple unit 31 uses spaced structure, it is ensured that the stability connected between inorganic barrier layer 2 prevents this flexible display substrates
In selfreparing unit 31 removing fall off；On the other hand, projection of all selfreparing water absorption layers 3 in the first flexible substrates 1 with
Projection of second flexible substrates 4 in the first flexible substrates 1 is overlapped, and can be repaired the crackle of generation, be effectively prevent water oxygen
Into in organic electro luminescent layer, packaging effect is improved.
As a kind of embodiment of above-mentioned selfreparing unit 31, each selfreparing unit 31 is circular configuration or polygon
Structure.
Specifically, in the present embodiment, each selfreparing unit 31 is hexagonal structure, and each selfreparing unit 31 uses six
Side shape structure increases the contact area of each selfreparing unit 31 and inorganic barrier layer 2, that is, increases each selfreparing unit
Bond area between 31 and inorganic barrier layer 2 mentions to improve the bonding strength of selfreparing unit 31 Yu inorganic barrier layer 2
The high stability being connect between selfreparing suction unit and inorganic barrier layer 2, and then improve the stabilization of display panel structure
Property.
As a kind of embodiment of above-mentioned selfreparing water absorption layer 3, selfreparing water absorption layer is answered by the first composite material, second
Condensation material, konjaku glucomannan-acrylic acid graft copolymer and sweet dew alcohol radical selfreparing gel are made, wherein the first composite wood
Material include hydrophilic monomer, sodium alginate and nanoclay, the second composite material include konjaku glucomannan, polyacrylamide and
Nanoclay.
Above-mentioned selfreparing water absorption layer 3 is made of physical self-healing material, ensure that the selfreparing of selfreparing water absorption layer 3
Effect.
Specifically, the thickness range of selfreparing water absorption layer 3 is 0.05 μm to 5 μm, and the thickness of selfreparing water absorption layer 3 can be
0.05 μm, 0.1 μm, 0.2 μm, 0.3 μm, 0.4 μm or 0.5 μm, herein without limitation, the thickness of selfreparing water absorption layer 3 can basis
The size of display panel is chosen.
As a kind of embodiment of above-mentioned inorganic barrier layer 2, inorganic barrier layer 2 by SiNx, SiO2, SiC, Al2O3,
One or more of ZnS, ZnO are made.
Specifically, the thickness range of inorganic barrier layer 2 is 0.1 μm to 5 μm, the thickness of inorganic barrier layer can 0.1 μm of value,
0.5 μm, 1 μm, 2 μm, 3 μm, 4 μm or 5 μm, herein without limitation, in general, the thickness of inorganic barrier layer 2 can be according to real panel
Size chosen.
Specifically, the first flexible substrates 1 and the second flexible substrates 4 are Kapton.
The Kapton that above-mentioned first flexible substrates 1 and the second flexible substrates 4 use have good insulation performance,
Chemical stability and wet-hot aging performance.
The embodiment of the invention also provides a kind of flexible base boards, including any one Flexible Displays base in above-described embodiment
Plate protective film.
The embodiment of the invention also provides a kind of preparation methods of flexible display substrates protective film, comprising:
At least one layer of inorganic barrier layer 2 is formed in the first flexible substrates 1, wherein at least one layer of inorganic barrier layer 2 is equipped with
Along the selfreparing water absorption layer 3 of 2 extension directional spreding of inorganic barrier layer, selfreparing water absorption layer 3 includes reviewing one's lessons by oneself for multiple same layers setting
Multiple unit 31；
Prepare the second flexible substrates 4.
Specifically, multilayer inorganic barrier layer 2 is prepared in the first flexible substrates 1.
As shown in Figure 1, when being equipped with selfreparing water absorption layer 3 in each layer of inorganic barrier layer 2, in the first flexible substrates 1
At least one layer of inorganic barrier layer 2 of upper preparation, and at least one layer of inorganic barrier layer 2 passes through composition along 2 extension direction of inorganic barrier layer
It includes: step 1 that technique, which forms patterning selfreparing water absorption layer 3: selfreparing water absorption layer 3, step are prepared in the first flexible substrates 1
Rapid two: preparing inorganic barrier layer 2 on selfreparing water absorption layer 3, step 3: preparing selfreparing water absorption layer in inorganic barrier layer 2
3, step 4: preparing inorganic barrier layer 2 on selfreparing water absorption layer 3, repeat the above steps one to step 4 with formed multilayer without
Unit interlayer, and selfreparing water absorption layer 3 is equipped in every layer of inorganic barrier layer 2, and each selfreparing water absorption layer 3 is in the first flexible base
Orthographic projection of the orthographic projection at bottom 1 with the second flexible substrates 4 in the first flexible substrates 1 is overlapped；
When inorganic barrier layer 2 includes the first inorganic barrier layer set gradually in the first flexible substrates 1, the second inorganic resistance
When interlayer and third inorganic barrier layer, at least one layer of inorganic barrier layer 2, and at least one layer of nothing are prepared in the first flexible substrates 1
It includes: step 1 that machine barrier layer 2, which forms patterning selfreparing water absorption layer 3 by patterning processes along 2 extension direction of inorganic barrier layer:
The first selfreparing water absorption layer 32 is prepared in the first flexible substrates 1, step 2: preparing first on the first selfreparing water absorption layer 32
Step 3: inorganic barrier layer prepares the second selfreparing water absorption layer 33, step 4 in the first inorganic barrier layer: reviewing one's lessons by oneself second
It relapses and prepares the second inorganic barrier layer on water layer 33, step 5: prepare third selfreparing water absorption layer in the second inorganic barrier layer
34, step 6: preparing third inorganic barrier layer on third selfreparing water absorption layer 34, to form multilayer without unit interlayer, and it is every
Selfreparing water absorption layer is equipped in layer inorganic barrier layer, and each selfreparing water absorption layer is in the orthographic projection and the of the first flexible substrates 1
Two flexible substrates 4 are overlapped in the orthographic projection of the first flexible substrates 1.
As shown in Fig. 2, being equipped with selfreparing water suction in each layer of inorganic barrier layer 2 in addition to the inorganic barrier layer 2 of top layer
When layer 3, at least one layer of inorganic barrier layer 2 is prepared in the first flexible substrates 1, and at least one layer of inorganic barrier layer 2 is along inorganic resistance
It includes: step 1 that 2 extension direction of interlayer, which forms patterning selfreparing water absorption layer 3 by patterning processes: in the first flexible substrates 1
Inorganic barrier layer 2 is prepared, step 2: preparing selfreparing water absorption layer 3, step 3: in selfreparing water absorption layer in inorganic barrier layer 2
Inorganic barrier layer 2 is prepared on 3, step 4: preparing selfreparing water absorption layer 3 in inorganic barrier layer 2, repeat the above steps one to step
Rapid four to form multilayer without unit interlayer, and in addition to the inorganic barrier layer of top layer 2, is equipped with and reviews one's lessons by oneself in every layer of inorganic barrier layer 2
Relapse water layer 3, and each selfreparing water absorption layer 3 in the orthographic projection of the first flexible substrates 1 and the second flexible substrates 4 in the first flexible base
The orthographic projection at bottom 1 is overlapped；
When inorganic barrier layer 2 includes the first inorganic barrier layer set gradually in the first flexible substrates 1, the second inorganic resistance
When interlayer, third inorganic barrier layer and four inorganic barrier layers, at least one layer of inorganic barrier is prepared in the first flexible substrates 1
Layer, and at least one layer of inorganic barrier layer 2 forms patterning selfreparing water suction by patterning processes along 2 extension direction of inorganic barrier layer
Layer 3 includes: step 1: preparing the first inorganic barrier layer in the first flexible substrates 1, step 2: in the first inorganic barrier layer
The first selfreparing water absorption layer 32 is prepared, step 3: preparing the second inorganic barrier layer, step on the first selfreparing water absorption layer 32
Four: preparing the second selfreparing water absorption layer 33 in the second inorganic barrier layer, step 5: being prepared on the second selfreparing water absorption layer 33
Step 6: third inorganic barrier layer prepares third selfreparing water absorption layer 34, step 7: in third in third inorganic barrier layer
The 4th inorganic barrier layer is prepared on selfreparing water absorption layer 34, to form every layer of inorganic barrier layer 2 in addition to the inorganic barrier layer of top layer
It is inside equipped with selfreparing water absorption layer, and each selfreparing water absorption layer exists in the orthographic projection of the first flexible substrates 1 and the second flexible substrates 4
The orthographic projection of first flexible substrates 1 is overlapped.
Obviously, those skilled in the art can carry out various modification and variations without departing from this hair to the embodiment of the present invention
Bright spirit and scope.In this way, if these modifications and changes of the present invention belongs to the claims in the present invention and its equivalent technologies
Within the scope of, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of flexible display substrates protective film, which is characterized in that flexible including the first flexible substrates being oppositely arranged and second
Substrate and at least one layer of inorganic barrier layer between first flexible substrates and the second flexible substrates, it is at least one layer of
The inorganic barrier layer is equipped with the selfreparing water absorption layer along the inorganic barrier layer extension directional spreding, the selfreparing water absorption layer
Selfreparing unit including the setting of multiple same layers.
2. flexible display substrates protective film according to claim 1, which is characterized in that first flexible substrates and described
Multilayer inorganic barrier layer is equipped between second flexible substrates, in which:
Selfreparing water absorption layer is equipped in each layer inorganic barrier layer, and each selfreparing water absorption layer is soft described first
The orthographic projection of property substrate is overlapped with second flexible substrates in the orthographic projection of the first flexible substrates；Or,
In addition to the inorganic barrier layer of top layer, selfreparing water absorption layer, and each institute are equipped in each layer inorganic barrier layer
State selfreparing water absorption layer first flexible substrates orthographic projection and second flexible substrates the first flexible substrates just
Projection is overlapped.
3. flexible display substrates protective film according to claim 2, which is characterized in that each selfreparing unit is circle
Shape structure or polygonized structure.
4. flexible display substrates protective film according to claim 3, which is characterized in that each selfreparing unit is positive
Hexagonal structure.
5. flexible display substrates protective film according to claim 4, which is characterized in that first flexible substrates with it is described
Three layers of inorganic barrier layer are equipped between second flexible substrates, wherein each selfreparing unit is in the described first flexible base
Projection on bottom does not overlap.
6. flexible display substrates protective film according to claim 1, which is characterized in that the selfreparing water absorption layer is by first
Composite material, the second composite material, konjaku glucomannan-acrylic acid graft copolymer and sweet dew alcohol radical selfreparing gel are made,
Wherein, first composite material includes hydrophilic monomer, sodium alginate and nanoclay, and second composite material includes evil spirit
Taro Glucomannan, polyacrylamide and nanoclay.
7. flexible display substrates protective film according to claim 1, which is characterized in that the thickness of the selfreparing water absorption layer
Range is 0.05 μm to 5 μm.
8. flexible display substrates protective film according to claim 1, which is characterized in that the inorganic barrier layer by SiNx,
SiO2、SiC、Al2O3, one or more of ZnS, ZnO be made.
9. flexible display substrates protective film according to claim 1, which is characterized in that the thickness model of the inorganic barrier layer
Enclose is 0.1 μm to 5 μm.
10. a kind of flexible base board, which is characterized in that including the described in any item flexible display substrates protective films of claim 1-9.
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