CN109411520A - Flexible display panels and display device - Google Patents
Flexible display panels and display device Download PDFInfo
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- CN109411520A CN109411520A CN201811243757.8A CN201811243757A CN109411520A CN 109411520 A CN109411520 A CN 109411520A CN 201811243757 A CN201811243757 A CN 201811243757A CN 109411520 A CN109411520 A CN 109411520A
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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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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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Abstract
The invention discloses a kind of flexible display panels and display devices.Flexible display panels, comprising: flexible base board；Array layer is located on flexible base board；Display layer is located at array layer far from flexible base board side, and display layer includes multiple luminescent devices；Flexible display panels include bendable folding area, bendable folding area are at least provided with graphite composite layer, graphite composite layer includes the graphite linings and flexible membrane layer for being layered on top of each other setting；Graphite composite layer has neutral surface, and neutral surface is between graphite linings and flexible membrane layer or neutral surface is located at flexible membrane layer.The present invention can be avoided graphite linings and bear action of compressive stress, to avoid the splitting phenomenon of graphite linings, guarantee flexible display panels performance reliability.
Description
Technical field
The present invention relates to field of display technology, more particularly, to a kind of flexible display panels and display device.
Background technique
In existing display device technology, display panel is broadly divided into liquid crystal display panel and organic light emitting display panel two
The technology of kind mainstream.Wherein, for liquid crystal display panel by applying voltage at liquid crystal molecule both ends, formation can control liquid crystal molecule
The electric field of deflection, and then control the display function through realization display panel of light；Organic light emitting display panel is using organic
Electroluminescent material, when there is electric current to pass through electroluminescent organic material, luminescent material will shine, and then realize display surface
The display function of plate.
Organic light emitting display panel has self-luminous, ultra-thin, high contrast, super wide viewing angle, low power consumption, display brightness
It is high, bright in luster, and as the emphasis paid close attention at present the advantages that Flexible Displays can be made.
Therefore it provides the flexible display panels and display device of a kind of reliable performance are that this field technology urgently to be resolved is asked
Topic.
Summary of the invention
In view of this, solving raising performance reliability the present invention provides a kind of flexible display panels and display device
The technical issues of.
In a first aspect, the present invention provides a kind of flexible display panels, comprising:
Flexible base board；
Array layer is located on flexible base board；
Display layer is located at array layer far from flexible base board side, and display layer includes multiple luminescent devices；
Flexible display panels include bendable folding area, and bendable folding area is at least provided with graphite composite layer, graphite composite layer packet
Include the graphite linings and flexible membrane layer for being layered on top of each other setting；Wherein,
Graphite composite layer has neutral surface, and neutral surface is between graphite linings and flexible membrane layer or neutral surface is positioned at soft
Property film layer.
Based on the same inventive concept, second aspect, the present invention also provides a kind of display devices, including provided by the invention
It anticipates a kind of flexible display panels.
Compared with prior art, flexible display panels and display device provided by the invention, at least realizing following has
Beneficial effect:
In flexible display panels provided by the invention, bent area is provided with graphite composite layer, the neutrality of graphite composite layer
Face is located at flexible membrane layer or between graphite linings and flexible membrane layer, and the present invention can guarantee flexible display panels in bending
When state, the graphite linings in graphite composite layer bear action of pulling stress.Graphite linings are made of graphite material, and graphite linings are interlayer knot
Structure, the very strong extremely difficult destruction of binding force between the carbon atom on same plane layer, and intermolecular force is relied between layers
It combines, binding force is weaker.When graphite linings bear action of compressive stress, between layers can generating layer peeling, and graphite
Interlayer structure does not change substantially when layer bears tensile stress.The present invention can be avoided graphite linings and bear action of compressive stress, thus
The splitting phenomenon of graphite linings is avoided, guarantees flexible display panels performance reliability.In addition, the graphite linings in graphite composite layer
Good heat conductivity, when flexible display panels are shown, the luminescent device in display layer can generate heat, and graphite linings can be quick
Heat is conducted, is conducive to heat and distributes in time.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Detailed description of the invention
It is combined in the description and the attached drawing for constituting part of specification shows the embodiment of the present invention, and even
With its explanation together principle for explaining the present invention.
Fig. 1 is a kind of optional embodiment film layer structure schematic diagram of flexible display panels provided in an embodiment of the present invention；
Fig. 2 is the bending state schematic diagram of flexible display panels shown in FIG. 1；
Fig. 3 is graphite composite layer stress diagram in Fig. 2；
Fig. 4 is flexible display panels another kind optional embodiment film layer structure figure provided in an embodiment of the present invention；
Fig. 5 is the bending state schematic diagram of flexible display panels shown in Fig. 4；
Fig. 6 is graphite composite layer stress diagram in Fig. 5；
Fig. 7 is another optional embodiment schematic diagram of flexible display panels provided in an embodiment of the present invention；
Fig. 8 is another optional embodiment schematic diagram of flexible display panels provided in an embodiment of the present invention；
Fig. 9 is another optional embodiment schematic diagram of flexible display panels provided in an embodiment of the present invention；
Figure 10 is another optional embodiment schematic diagram of flexible display panels provided in an embodiment of the present invention；
Figure 11 is display device schematic diagram provided in an embodiment of the present invention.
Specific embodiment
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should also be noted that unless in addition having
Body explanation, the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of invention.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to the present invention
And its application or any restrictions used.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
Fig. 1 is a kind of optional embodiment film layer structure schematic diagram of flexible display panels provided in an embodiment of the present invention.Fig. 2
For the bending state schematic diagram of flexible display panels shown in FIG. 1.Fig. 3 is graphite composite layer stress diagram in Fig. 2.Fig. 4 is
Flexible display panels another kind optional embodiment film layer structure figure provided in an embodiment of the present invention.Fig. 5 is flexibility shown in Fig. 4
The bending state schematic diagram of display panel.Fig. 6 is graphite composite layer stress diagram in Fig. 5.
As shown in Figure 1, flexible display panels include: flexible base board 101；Array layer 102 is located on flexible base board 101；
Display layer 103 is located at array layer 102 far from 101 side of flexible base board, and display layer 103 includes multiple luminescent devices 1031, optional
, luminescent device 1031 can be organic luminescent device, including anode, luminescent layer and cathode.
Flexible display panels include bendable folding area Z, and bendable folding area Z can be the partial region of flexible display panels, or
The whole face of flexible display panels be all it is bent, at least in bendable folding area, Z is provided with graphite composite layer 104, graphite composite layer
104 include the graphite linings 1041 and flexible membrane layer 1042 for being layered on top of each other setting；It can in flexible display panels i.e. provided by the invention
With only Z is provided with graphite composite layer 104 in bendable folding area, or the whole face of flexible display panels can also be provided with graphite and answer
Close layer 104.And the relative position of graphite linings 1041 and flexible membrane layer 1042 includes two kinds of situations: i.e. stone in graphite composite layer 104
Layer of ink 1041 is located at flexible membrane layer 1042 and is located at graphite linings 1041 close to 101 side of flexible base board or flexible membrane layer 1042
Close to 101 side of flexible base board.In flexible display panels provided by the invention, graphite composite layer 104 has neutral surface M1, neutral
Face M1 is between graphite linings 1041 and flexible membrane layer 1042 or neutral surface M1 is located at flexible membrane layer 1042.Wherein, in material
Neutral surface is both to be not subject to tensile stress or be not subject to the face of compression in mechanics.
It optionally, further include encapsulating structure in flexible display panels, encapsulating structure is located at display layer far from array layer one
Side, encapsulating structure surrounds and covering display layer, encapsulating structure can be isolated water oxygen, play protection to the luminescent device in display layer
Effect, guarantees the service life of luminescent device.Encapsulating structure can be thin-film package, including at least one organic encapsulation layer and extremely
A few inorganic encapsulated layer.The film layer structures such as polaroid, protective film are also provided on encapsulating structure.
The graphite linings 1041 in graphite composite layer 104 are shown in Fig. 1 is located at flexible base board 101 far from array layer 102 1
Side, flexible membrane layer 1042 is located at graphite linings 1041 far from 101 side of flexible base board, and the neutral surface of graphite composite layer 104 M1
In flexible membrane layer 1042 the case where.The bending state schematic diagram of flexible display panels provided by the invention is as shown in Fig. 2, flexible aobvious
Showing panel integrally has a neutral surface M2, in order to avoid causing the removing of each film layer in display layer 103 when bending, minimizes
The folding s tress that display layer 103 is born, so neutral surface M2 is usually located at display layer 103, then array layer under this bending state
102, flexible base board 101 and graphite composite layer 104 bear action of compressive stress.With continued reference to shown in Fig. 3, in flexible display panels
When in bending state, graphite composite layer 104 is whole to bear action of compressive stress, and in the present invention graphite composite layer 104 neutrality
Face M1 is located at flexible membrane layer 1042, then in graphite composite layer 104, graphite linings 1041 bear tensile stress F1 effect, flexible membrane layer
Part in 1042 between neutral surface M1 and graphite linings 1041 is also subjected to tensile stress F1, and is located at neutrality in flexible membrane layer 1042
Face M1 then bears the part far from graphite linings 1041 effect of pressure stress F 2.And the compression that graphite composite layer 104 is integrally born
Size is greater than the size of the tensile stress of receiving, so that graphite composite layer 104 is whole to bear action of compressive stress.
Based on same principle, flexible membrane layer 1042 is located at close to 101 side of flexible base board for graphite linings 1041, and stone
The case where neutral surface M1 of black composite layer 104 is between graphite linings 1041 and flexible membrane layer 1042.It is curved in flexible display panels
When folding, in graphite composite layer 104, graphite linings 1041 bear action of pulling stress, and flexible membrane layer 1042 bears action of compressive stress.
And the size for the compression that graphite composite layer 104 is integrally born is greater than the size of the tensile stress of receiving, graphite composite layer 104 is whole
Body bears action of compressive stress.
In a kind of optional embodiment, Fig. 4 shows flexible membrane layer 1042 and is located at flexible base board 101 far from array layer
102 sides, graphite linings 1041 are located at the case where flexible membrane layer 1042 is far from 101 side of flexible base board, and graphite composite layer 104
Neutral surface M1 is located at flexible membrane layer 1042.The bending state schematic diagram of flexible display panels is as shown in figure 5, flexible display panels are whole
Body has a neutral surface M2, in order to avoid causing the removing of each film layer in display layer 103 when bending, minimizes display layer
103 folding s tress born, so neutral surface M2 is usually located at display layer 103, then under bending state shown in fig. 5, battle array
Column layer 102, flexible base board 101 and graphite composite layer 104 bear action of pulling stress.With continued reference to shown in Fig. 6, in Flexible Displays
When panel is in bending state, graphite composite layer 104 is whole to bear action of pulling stress, the neutral surface of graphite composite layer 104 M1
In flexible membrane layer 1042, then in graphite composite layer 104, graphite linings 1041 are born tensile stress F1 and are acted on, in flexible membrane layer 1042
Part between neutral surface M1 and graphite linings 1041 is also subjected to tensile stress F1, and it is remote to be located at neutral surface M1 in flexible membrane layer 1042
Then bear the effect of pressure stress F 2 in part from graphite linings 1041.And the size for the tensile stress that graphite composite layer 104 is integrally born is wanted
Greater than the size of the compression of receiving, graphite composite layer 104 is whole to bear action of pulling stress.
Based on same principle, flexible membrane layer 1042 is located at far from 101 side of flexible base board for graphite linings 1041, and stone
The case where neutral surface M1 of black composite layer 104 is between graphite linings 1041 and flexible membrane layer 1042.It is curved in flexible display panels
When folding, in graphite composite layer 104, graphite linings 1041 bear action of pulling stress, and flexible membrane layer 1042 bears action of compressive stress.
And the size for the tensile stress that graphite composite layer 104 is integrally born is greater than the size of the compression of receiving, graphite composite layer 104 is whole
Body bears action of pulling stress.
In flexible display panels provided by the invention, bent area is provided with graphite composite layer, the neutrality of graphite composite layer
Face is located at flexible membrane layer or between graphite linings and flexible membrane layer, and the present invention can guarantee flexible display panels in bending
When state, the graphite linings in graphite composite layer bear action of pulling stress.Graphite linings are made of graphite material, and graphite linings are interlayer knot
Structure, the very strong extremely difficult destruction of binding force between the carbon atom on same plane layer, and intermolecular force is relied between layers
It combines, binding force is weaker.When graphite linings bear action of compressive stress, between layers can generating layer peeling, and graphite
Interlayer structure does not change substantially when layer bears tensile stress.The present invention can be avoided graphite linings and bear action of compressive stress, thus
The splitting phenomenon of graphite linings is avoided, guarantees flexible display panels performance reliability.In addition, the graphite linings in graphite composite layer
Good heat conductivity, when flexible display panels are shown, the luminescent device in display layer can generate heat, and graphite linings can be quick
Heat is conducted, is conducive to heat and distributes in time.
Fig. 7 is another optional embodiment schematic diagram of flexible display panels provided in an embodiment of the present invention.Such as Fig. 7 institute
Show, in side of the flexible base board 101 far from array layer 102, whole face is provided with graphite composite layer 104.Fig. 7 shows multiple in graphite
It closes in layer 104, graphite linings 1041 can be located at the case where flexible membrane layer 1042 is close to 101 side of flexible base board.Graphite composite layer
104 neutral surface M1 is between graphite linings 1041 and flexible membrane layer 1042, or is located at flexible membrane layer 1042.Optionally, exist
In graphite composite layer 104, flexible membrane layer 1042 can also be located at graphite linings 1041 close to 101 side of flexible base board.Flexible membrane layer
1042 setting can guarantee 1041 action of pulling stress of graphite linings when display panel bending, avoid the splitting of graphite linings 1042
Phenomenon guarantees flexible display panels performance reliability.In addition, flexible display panels whole face is provided with graphite composite layer, graphite is multiple
The graphite linings good heat conductivity in layer is closed, when flexible display panels are shown, the luminescent device in display layer can generate heat, and stone
Layer of ink can quickly conduct heat, be conducive to distributing for heat, and the setting of graphite linings whole face advantageously ensures that Flexible Displays face
The homogeneity of plate whole face temperature.
Optionally, the making material of flexible membrane layer 1042 includes flexible polymer material in the present invention.Flexible membrane layer has
Certain elasticity modulus and thickness, guarantee flexible membrane layer bear external force after elastic deformation it is smaller, can transmit its own by
The active force arrived, after guaranteeing that flexible membrane layer and graphite linings are combined into graphite composite layer, the neutrality of graphite composite layer
Face can be between graphite linings and flexible membrane layer, or is located at flexible membrane layer.To guarantee to be folded in flexible display panels
Cheng Zhong, graphite linings bear action of pulling stress.Optionally, flexible polymer material include polyimides, polycarbonate, polyether sulfone,
It is any in polyethylene terephthalate, polyethylene naphthalate, polyarylate or fiberglass reinforced plastics
It is one or more.In actual fabrication, the making material of flexible membrane layer can be selected according to process conditions, the requirements such as cost control.
Flexible display panels provided by the invention, in production, flexible membrane layer can be used as the encapsulating material of graphite linings, will
After flexible membrane layer wraps up graphite linings, graphite composite layer is made；Or one can also be arranged between graphite linings and flexible membrane layer
Adhesive layer is bonded together graphite linings and flexible membrane layer as graphite composite layer.
In one embodiment, Fig. 8 is the optional embodiment party of another kind of flexible display panels provided in an embodiment of the present invention
Formula schematic diagram.As shown in figure 8, graphite composite layer 104 includes that the first glue-line J1, the first glue-line J1 is located at graphite linings 1041 and flexibility
Between film layer 1042.Fig. 8 is only located at flexible membrane layer 1042 close to flexible base board 101 with graphite linings 1041 in graphite composite layer 104
The case where side, illustrates.
In the embodiment, need to guarantee that the thickness of the first glue-line J1 is very thin, and the first glue-line J1 need to have it is larger
Elasticity modulus, such setting can guarantee stress that its own receiving can be transmitted after the first glue-line J1 stress, so as to
Enough the neutral surface of guarantee graphite composite layer 104 is between graphite linings 1041 and flexible membrane layer 1042, or is located at flexible membrane layer
1042。
With continued reference to shown in Fig. 8, the ratio of the thickness d 2 of the thickness d 1 and flexible membrane layer 1042 of graphite linings 1041 is D1, the
The ratio of the thickness d 1 of the thickness d 3 and graphite linings 1041 of one glue-line J1 is D2；Wherein, 0.1≤D1≤0.5,0.1≤D2≤
0.5.Guarantee that the thickness of graphite linings is less than the thickness of flexible membrane layer in the embodiment, the thickness of the first glue-line is less than graphite linings
Thickness, and the thickness of setting graphite linings and the thickness of flexible membrane layer meet certain ratio range, the thickness and graphite of the first glue-line
The thickness of layer also meets certain ratio range, by the cooperation on thicknesses of layers so that the neutral surface of graphite composite layer is located at graphite
Between layer and flexible membrane layer, or it is located at flexible membrane layer.
Optionally, the elasticity modulus of the first glue-line J1 is E, wherein 50MPa≤E≤1000MPa.Guarantee the first glue-line
Elasticity modulus is larger, in flexible display panels bending, guarantees that the first glue-line can transmit its folding s tress being subject to.
In one embodiment, in flexible display panels provided by the invention, graphite linings with a thickness of 17 μm, the first glue-line
With a thickness of 5 μm, flexible membrane layer with a thickness of 50 μm, wherein the elasticity modulus of the first glue-line is 300MPa, the bullet of flexible membrane layer
Property modulus be 1~5GPa.
Fig. 9 is another optional embodiment schematic diagram of flexible display panels provided in an embodiment of the present invention.Such as Fig. 9 institute
Show, flexible display panels further include the second glue-line J2；Second glue-line J2 is located at graphite composite layer 104 close to flexible base board 101 1
Side.Fig. 9 is only located at the case where flexible membrane layer 1042 is close to 101 side of flexible base board with graphite linings 1041 in graphite composite layer 104
It illustrates.Optionally, the first glue-line as shown in the figure is also provided between graphite linings 1041 and flexible membrane layer 1042
J1.In the embodiment, the second glue-line plays cementation and pastes graphite composite layer on a flexible substrate.The elasticity of second glue-line
Modulus can be smaller, and when bearing external force, elastic deformation is larger, and in flexible display panels bending, the second glue-line is hardly
The power of its receiving can be transmitted outward.
Optionally, the second glue-line is grid glue PET double-sided adhesive., with grid glue surface, exhaust performance is good for it, can be with large area
It pastes, does not generate bubble, be conducive to the planarization after graphite composite layer is pasted with flexible substrates.
Figure 10 is another optional embodiment schematic diagram of flexible display panels provided in an embodiment of the present invention.Such as Figure 10
Shown, flexible display panels further include buffer layer 105, and buffer layer 105 is located at graphite composite layer 104 far from 102 side of array layer；
Third glue-line J3 is additionally provided between buffer layer 105 and graphite composite layer 104.In the embodiment, buffer layer can absorb
Folding s tress when flexible display panels are bent, improves the bending resistance of flexible display panels.Wherein, buffer layer and graphite are multiple
Layer is closed to be bonded together by third glue-line.The elasticity modulus of third glue-line can be smaller, the elasticity shape when bearing external force
Become larger, in flexible display panels bending, third glue-line can hardly transmit the power of its receiving outward.
In Figure 10, only it is located at flexible membrane layer 1042 close to flexible base board 101 1 with graphite linings 1041 in graphite composite layer 104
The case where side, illustrates.Optionally, in this embodiment, can be as shown in the figure, in graphite linings 1041 and flexible membrane layer
It is provided with the first glue-line J1 between 1042, the second glue-line J2 is provided between graphite composite layer 104 and flexible substrates 101.Its
In, the thickness of the first glue-line J1 is very thin, and the elasticity modulus of the first glue-line J1 will be far longer than the springform of the second glue-line J2
The elasticity modulus of amount and third glue-line J3.In flexible display panels bending, the first glue-line J1, which can transmit folding s tress, makes stone
Graphite linings in black composite layer bear action of pulling stress.And the second glue-line J2 and third glue-line J3 are after stress, it may occur that certain
Deformation, stress can be absorbed by being equivalent to, alleviate stress.
Optionally, third glue-line J3 is adhesive layer.Adhesive layer can be double-sided adhesive, can be in flexible display panels production
It is after buffer-layer surface is attached adhesive layer first, to be then bonded again with graphite composite layer.Adhesive layer can also be painting
The glue-line covered, flexible display panels production when can be, first by buffer-layer surface coat adhesive layer after, then again with stone
Black composite layer is bonded.Adhesive layer can also be other kinds of bonding glue-line, and the application does not limit this.Optionally,
Play the role of alleviating the buffer layer of folding s tress in flexible display panels bending may include foamed cotton layer.
The present invention also provides a kind of display device, Figure 11 is display device schematic diagram provided in an embodiment of the present invention.Such as figure
Shown in 11, display device includes the flexible display panels 100 that any embodiment of that present invention provides.Display device provided by the invention
Including but not limited to following classification: television set, laptop, desktop displays, tablet computer, digital camera, mobile phone, intelligence
Energy bracelet, intelligent glasses, Vehicular display device, Medical Devices, industrial control equipment, touch interactive terminal etc..
Through the foregoing embodiment it is found that flexible display panels provided by the invention and display device, at least realize as follows
The utility model has the advantages that
In flexible display panels provided by the invention, bent area is provided with graphite composite layer, the neutrality of graphite composite layer
Face is located at flexible membrane layer or between graphite linings and flexible membrane layer, and the present invention can guarantee flexible display panels in bending
When state, the graphite linings in graphite composite layer bear action of pulling stress.Graphite linings are made of graphite material, and graphite linings are interlayer knot
Structure, the very strong extremely difficult destruction of binding force between the carbon atom on same plane layer, and intermolecular force is relied between layers
It combines, binding force is weaker.When graphite linings bear action of compressive stress, between layers can generating layer peeling, and graphite
Interlayer structure does not change substantially when layer bears tensile stress.The present invention can be avoided graphite linings and bear action of compressive stress, thus
The splitting phenomenon of graphite linings is avoided, guarantees flexible display panels performance reliability.In addition, the graphite linings in graphite composite layer
Good heat conductivity, when flexible display panels are shown, the luminescent device in display layer can generate heat, and graphite linings can be quick
Heat is conducted, is conducive to heat and distributes in time.
Although some specific embodiments of the invention are described in detail by example, the skill of this field
Art personnel it should be understood that example above merely to being illustrated, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above embodiments.This hair
Bright range is defined by the following claims.
Claims (15)
1. a kind of flexible display panels characterized by comprising
Flexible base board；
Array layer is located on the flexible base board；
Display layer is located at the array layer far from the flexible base board side, and the display layer includes multiple luminescent devices；
The flexible display panels include bendable folding area, and the bendable folding area is at least provided with graphite composite layer, the graphite
Composite layer includes the graphite linings and flexible membrane layer for being layered on top of each other setting；Wherein,
The graphite composite layer have neutral surface, the neutral surface between the graphite linings and the flexible membrane layer, or
The neutral surface is located at the flexible membrane layer.
2. flexible display panels according to claim 1, which is characterized in that
In the graphite composite layer, the graphite linings are located at the flexible base board far from the array layer side, the flexibility
Film layer is located at the graphite linings far from the flexible base board side.
3. flexible display panels according to claim 1, which is characterized in that
In the graphite composite layer, the flexible membrane layer is located at the flexible base board far from the array layer side, the stone
Layer of ink is located at the flexible membrane layer far from the flexible base board side.
4. flexible display panels according to claim 1, which is characterized in that
In side of the flexible base board far from the array layer, whole face is provided with the graphite composite layer.
5. flexible display panels according to claim 1, which is characterized in that
The making material of the flexible membrane layer includes flexible polymer material.
6. flexible display panels according to claim 5, which is characterized in that
The flexible polymer material includes polyimides, polycarbonate, polyether sulfone, polyethylene terephthalate, poly- naphthalene
Any one in naphthalate, polyarylate or fiberglass reinforced plastics.
7. flexible display panels according to claim 1, which is characterized in that
The graphite composite layer includes the first glue-line, and first glue-line is between the graphite linings and the flexible membrane layer.
8. flexible display panels according to claim 7, which is characterized in that
The thickness ratio of the thickness of the graphite linings and the flexible membrane layer is D1, the thickness and the graphite of first glue-line
The thickness ratio of layer is D2；Wherein, 0.1≤D1≤0.5,0.1≤D2≤0.5.
9. flexible display panels according to claim 7, which is characterized in that
The elasticity modulus of first glue-line is E, wherein 50MPa≤E≤1000MPa.
10. flexible display panels according to claim 1, which is characterized in that
The flexible display panels further include the second glue-line；
Second glue-line is located at the graphite composite layer close to the flexible base board side.
11. flexible display panels according to claim 10, which is characterized in that
Second glue-line is grid glue PET double-sided adhesive.
12. flexible display panels according to claim 1, which is characterized in that
The flexible display panels further include buffer layer, and the buffer layer is located at the graphite composite layer far from the array layer one
Side；
Third glue-line is additionally provided between the buffer layer and the graphite composite layer.
13. flexible display panels according to claim 12, which is characterized in that
The third glue-line is adhesive layer.
14. flexible display panels according to claim 12, which is characterized in that the buffer layer includes foamed cotton layer.
15. a kind of display device, which is characterized in that including the described in any item flexible display panels of claim 1 to 14.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110444116A (en) * | 2019-07-16 | 2019-11-12 | 武汉华星光电半导体显示技术有限公司 | Flexible base board and preparation method thereof |
| CN111509137A (en) * | 2020-04-24 | 2020-08-07 | 合肥维信诺科技有限公司 | Flexible display screen |
| CN113687461A (en) * | 2021-08-23 | 2021-11-23 | 京东方科技集团股份有限公司 | Polarizing plate, folding module and display device |
| WO2021233367A1 (en) * | 2020-05-21 | 2021-11-25 | 华为技术有限公司 | Display panel and display apparatus |
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