CN107968154A - A kind of display device - Google Patents
A kind of display device Download PDFInfo
- Publication number
- CN107968154A CN107968154A CN201610915214.0A CN201610915214A CN107968154A CN 107968154 A CN107968154 A CN 107968154A CN 201610915214 A CN201610915214 A CN 201610915214A CN 107968154 A CN107968154 A CN 107968154A
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- nano
- particle
- display device
- cover plate
- protective cover
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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
-
- 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
- H10K50/841—Self-supporting sealing arrangements
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/301—Details of OLEDs
- H10K2102/311—Flexible OLED
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/301—Details of OLEDs
- H10K2102/331—Nanoparticles used in non-emissive layers, e.g. in packaging layer
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The present invention provides a kind of display device, including：Display panel, has a display side；Protective cover plate, positioned at the display side of the display panel, the protective cover plate includes flexible parent metal and the nano-particle that can increase the flexible parent metal hardness in the flexible parent metal.By using the protective cover plate for including flexible parent metal and nano-particle; flexible parent metal and nano-particle are located in same layer; and become one structure; the protective cover plate of formation not only has good bending and flexibility function; and the nano-particle of flexible parent metal hardness can be increased due to the addition of; so that the hardness increase of protective cover plate, enhances the scratch resistance and scuffing ability of protective cover plate, and can effectively protect internal display panel.
Description
Technical field
The invention belongs to display technology field, specifically, is related to a kind of display device.
Background technology
It is special that organic electroluminescent (OLED) display device has that low in energy consumption, light, brightness is high, the visual field is wide and reaction is fast etc.
Point, can be widely used in the numerous areas such as portable electric appts, wearable electronic equipment, vehicle electronic device.
An OLED display feature the most noticeable is that by Flexible Displays function, flexible OLED display due to
The advantages that can bending or even crimp or folding so that Flexible Displays are by one of important trend as following Display Technique.
Flexible OLED display is generally provided with a protective cover plate on the outside of its display panel, commonly referred to as Cover
Lens, or referred to as Cover Glass.An important composition component of the protective cover plate as flexible OLED display, has
Following functions：Holding surface finish, has higher case hardness and intensity, prevents from being scraped off or scratch, and protects internal aobvious
Show panel, and there is certain decoration function.
A kind of existing protective cover plate is glass material, it is with excellent optical property and case hardness, but bending
It is poor, it is not used as the protective cover plate of flexible OLED display.It refer to Figure 1A and Figure 1B, existing another kind protective cover plate
It is to be formed by coating one layer of hard material layer 20 ' (Hard Coating) in flexible substrate layer 10 ', this protective cover plate one
Determine to improve bending performance and case hardness in degree, but ductility due to hard material layer 20 ' and compressibility are than flexibility base
Material layer 10 ' is much smaller, and flexible substrate layer 10 ' and hard material layer 20 ' be in same layer, protective cover plate during bending,
Hard material layer 20 ' is easy to cracked 21 ', and then causes hard material layer 20 ' to be broken.
The content of the invention
To overcome problems of the prior art, the present invention provides a kind of display device, including：
Display panel, has a display side；
Protective cover plate, positioned at the display side of the display panel, the protective cover plate includes flexible parent metal and positioned at described
The nano-particle that can increase the flexible parent metal hardness in flexible parent metal.
Preferably, the flexible parent metal is high molecular material.
Preferably, the high molecular material has cross-linked structure.
Preferably, the high molecular material be selected from makrolon, polyethylene naphthalate, carbon fiber, polyimides,
At least one in cyclic olefin polymer, polyethylene terephthalate, Triafol T, polyacrylate polymers
Kind.
Preferably, the nano-particle is selected from fluorine-containing organic silicon nano-particle, acrylic system nano-particle, SiO2Nanoparticle
Son, Al2O3Nano-particle, SiOC nano-particles, SiNx nano-particles, TiAlN nano-particles, CrN nano-particles, TiAlCrN receive
At least one of rice corpuscles.
Preferably, the fluorine-containing organic silicon nano-particle is selected from fluorine-containing dimethyl silicone polymer nano-particle, fluorine-containing poly- silicon
At least one of oxygen alkane nano-particle, fluorine-containing organic silicon resin nano particle, fluorine-containing tetramethyl disiloxane nano-particle.
Preferably, acrylic system nano-particle is selected from polymethyl methacrylate nano particle, polyacrylic acid isobutyl
Ester nanoparticles, polyacrylic acid N-butyl nano-particle, polyacrylic acid -2- hydroxy propyl esters nano-particle, polyacrylic acid n-octyl
At least one of nano-particle, polyacrylic acid cyclohexyl nano-particle.
Preferably, the average grain diameter of the nano-particle is 50~500nm.
Preferably, the weight ratio of the nano-particle and the flexible parent metal is 0.1：1~1：1.
Preferably, the thickness of the protective cover plate is 10~100 μm.
Preferably, the display device further include polaroid between the display panel and the protective cover plate,
And the touch control layer between the protective cover plate and the polaroid.
Preferably, the touch control layer is in contact with the protective cover plate.
Preferably, the display panel is flexible display panels.
Preferably, the flexible display panels include flexible base board, encapsulated layer and positioned at the flexible base boards and described
Light-emitting component between encapsulated layer.
Preferably, the light-emitting component is organic electroluminescent device.
Compared with prior art, display device provided by the invention at least has the advantages that：
The present invention is located at by using the protective cover plate for including flexible parent metal and nano-particle, flexible parent metal and nano-particle
In same layer, and becoming one structure, the protective cover plate of formation not only has good bending and flexibility function, but also due to adding
The nano-particle of flexible parent metal hardness can be increased by having added so that the hardness increase of protective cover plate, enhances the anti-of protective cover plate
Scratch and scratch ability, and can effectively protect internal display panel.
Brief description of the drawings
A kind of existing structure diagrams for protecting rice served with meat and vegetables on top of Figure 1A；
Schematic diagram after the protection rice served with meat and vegetables on top bending that Figure 1B is Figure 1A；
Fig. 2 is the sectional view of the display device of the embodiment of the present invention；
Fig. 3 A are the microcosmic enlarged diagram before the protective cover plate bending of the embodiment of the present invention；
Fig. 3 B are the microcosmic enlarged diagram after the protective cover plate bending of the embodiment of the present invention.
Embodiment
Example embodiment is described more fully with referring now to attached drawing.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, these embodiments are provided so that the present invention more
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.It is identical attached in figure
Icon note represents same or similar structure, thus will omit repetition thereof.
The word of described expression position and direction, is the explanation carried out by taking attached drawing as an example in the present invention, but according to need
It can also make a change, make change and be all contained in the scope of the present invention.
Fig. 2 is refer to, the present invention provides a kind of display device 1, including display panel 100 and protective cover plate 200.
Display panel 100 has a display side, the side of 100 light extraction of the display side namely display panel.It is preferably real one
Apply in example, display panel 100 is flexible display panels, to realize flexible and bending effect.Further, flexible display panels bag
Include flexible base board 10, encapsulated layer 80 and the light-emitting component between flexible base board 10 and encapsulated layer 80.
Wherein, flexible base board 10 for example can be polyimide substrate (PI substrates), polyamide substrate, makrolon base
The organic polymer substrates such as plate, polyether sulfone substrate；Encapsulated layer 80 can be thin-film encapsulation layer, it can be single layer structure, such as
The inorganic layer formed by inorganic matter or the organic layer or sandwich construction that are formed by organic polymer, such as by inorganic layer
With encapsulated layer of the organic layer through alternately laminated formation；Light-emitting component for example can be organic electroluminescent device, the display of formation
Panel 100 is organic EL display panel.
By taking organic electroluminescent device as an example, organic electroluminescent device includes at least the anode on flexible base board 10
Layer 50, luminescent layer 60 and cathode layer 70, and may further include hole injection layer, hole transmission layer, electronic barrier layer, sky
One or more layers (not shown) in cave barrier layer, electron transfer layer, electron injecting layer.Electroluminescent cell can also include picture
Electroluminescent cell is limited multiple pixel regions by plain definition layer 40, the pixel defining layer 40.Organic electroluminescent device institute
Material is known technology used by the structure of use and each functional layer, and it will not be described here.
Further, tft layer 20 is further provided between organic electroluminescent device and flexible base board 10, it is thin
Film transistor layer 20 includes at least active layer, source class, drain electrode, grid, insulating layer (not shown), the drain electrode of tft layer 20
It is electrically connected with the anode layer 50 of electroluminescent cell.The concrete structure of tft layer 20 uses known technology, herein not
Give and repeating.
Further, flatness layer 30, the anode layer of electroluminescent cell 50 are additionally provided with tft layer 20
In on the flatness layer 30, and the drain electrode for passing through the via in flatness layer 30 and tft layer 20 is electrically connected.
It should be noted that the display panel 100 of the present invention is carried out by taking organic EL display panel as an example above
Description, but the present invention is not intended to limit the particular type of display panel 100, and it can be organic EL display panel,
It can be liquid crystal display panel.
Protective cover plate 200 is located at the display side of display panel 100, i.e., positioned at display panel 100 light extraction side, be used for
Display panel 100 is protected, prevents from being scraped off or scratches, and make its surface that there is certain finish.In the present invention, protective cover plate
200 include flexible parent metal 201 and the nano-particle 202 that can increase by 201 hardness of flexible parent metal in flexible parent metal 201.
Wherein, material of main part of the flexible parent metal 201 as protective cover plate 200, can on the one hand with preferable ductility and compressibility
Preferable flexible and bending effect is realized, especially suitable for flexible display apparatus, on the other hand, with the material such as glass or quartz
Protective cover plate is compared, its case hardness and intensity are weaker, and protective capacities is restricted.The present invention is by flexible parent metal 201
Nano-particle 202 is added, one side nano-particle 202 improves the surface strength and hardness of flexible parent metal 201, enhances protection
The anti scuffing and scuffing ability of cover board 200, on the other hand, nano-particle 202 is dispersed in flexible parent metal 201, with flexible parent metal
201 become one structure, and during bending, flexible parent metal 201 is stretched or compressed, and hard nanometer particle is with flexible parent metal 201
Deformation and move, therefore, addition nano-particle 202 on the ductility and compressibility of flexible parent metal 201 substantially without influence, i.e., not
Influence the Flexible Displays effect of protective cover plate 200.
In one embodiment, flexible parent metal 201 is high molecular material, on the one hand, high molecular material usually has long-chain
Structure, when the protective cover plate 200 formed after film forming is bent, high polymer long chain can be stretched or compressed, and have preferable submissive
Property and bending effect, on the other hand, refer to Fig. 3 A and Fig. 3 B, usually have in the protective cover plate 200 formed by high molecular material
There is the hole of certain nano-scale, nano-particle 202 is dispersed in flexible parent metal 201, after protective cover plate 200 is bent, is located at
Nano-particle 202 in hole can move within the specific limits, be protected between nano-particle 202 because of being locked in hole
Original state is held, still has the function of to increase hardness, therefore, certain hardness can be kept while bending.
Further, flexible parent metal 201 should have crosslinking net knot using the high molecular material with cross-linked structure
After the high molecular material film forming of structure, not only there is higher intensity, but also there is the micropore of certain nano-scale inside it
Structure, after nano-particle 202 is dispersed in the high molecular material, can move within the specific limits in the microcellular structure, because
This, can keep certain hardness while flexible and bending function is realized, be avoided protective cover plate 200 from being scraped off or scratch.
The high molecular material of the present invention can be high-molecular organic material or inorganic macromolecule material.As showing
Example, high-molecular organic material include but not limited to be makrolon (PC), polyethylene naphthalate (PEN), polyimides
(PI), cyclic olefin polymer (COP), polyethylene terephthalate (PET), Triafol T (TAC), polyacrylate
Birds of the same feather flock together compound, inorganic macromolecule material includes but not limited to be carbon fiber, and as flexible parent metal 201, above-mentioned material can be independent
Use, can also be applied in combination.
In a preferred embodiment, by increasing capacitance it is possible to increase the nano-particle 202 of 201 hardness of flexible parent metal includes but not limited to be to contain
The organic silicon particle of fluorine, acrylic system nano-particle, SiO2(silica) nano-particle, Al2O3(aluminium oxide) nano-particle, SiOC
(silicon oxide carbide) nano-particle, SiNx (silicon nitride) nano-particle, TiAlN (TiAlN) nano-particle, CrN (chromium nitride) receive
Rice corpuscles, TiAlCrN (nitridation Al-Cr-Ti) nano-particle, above-mentioned nano-particle 202 can be individually added into flexible parent metal 201
In, added after can also combining in flexible parent metal 201.
Further, fluorine-containing organic silicon nano-particle include but not limited to be fluorine-containing dimethyl silicone polymer nano-particle,
Fluorinated polysiloxane nano-particle, fluorine-containing organic silicon resin nano particle, fluorine-containing tetramethyl disiloxane nano-particle；Acrylic
It is that nano-particle includes but not limited to be polymethyl methacrylate nano particle, polyisobutyl acrylate nano-particle, poly- third
Olefin(e) acid N-butyl nano-particle, polyacrylic acid -2- hydroxy propyl esters nano-particle, polyacrylic acid n-octyl nano-particle, polypropylene
Sour cyclohexyl nano-particle.
Inventor, which studies, to be found, when the average grain diameter of nano-particle 202 is too small, microcellular structure in flexible parent metal 201 without
Method carries nano-particle 202, and when the average grain diameter of nano-particle 202 is excessive, the surface roughness of the protective cover plate 200 of formation becomes
Greatly, it is unfavorable for the light extraction of display panel 100, influences the display effect of display device 1；The hardness of nano-particle 202 is more big more can
The case hardness of protective cover plate 200 is enough improved, therefore, for the protective cover plate 200 of similar face hardness, the big nanoparticle of hardness
The additive amount of son 202 can be smaller than hardness 202 additive amount of nano-particle it is few, and for the nano-particle 202 of identical additive amount,
The average-size of nano-particle 202 is smaller, and particle diameter distribution is narrower, and the property of protective cover plate 200 is more uniform, its bending performance and anti-
Scratch ability is better.Based on considerations above, preferably, in the present invention average grain diameter of nano-particle 202 for 50~
500nm, its average grain diameter are more preferably 50~200nm.
In a preferred embodiment, in protective cover plate 200, the weight ratio of nano-particle 202 and flexible parent metal 201 is 0.1：
1~1：1, the protective cover plate 200 formed by the nano-particle 202 and flexible parent metal 201 of the weight ratio not only has well curved
Folding endurance energy, and there is suitable case hardness, after testing, its case hardness reaches 7H/750g, and it is secondary that it bends (Bending)
After number reaches 100,000 times, 200 surface of protective cover plate is flawless, case hardness and optical characteristics (such as light transmission rate, mist degree) base
This is constant, meets bending and the hardness requirement of protective cover plate 200.Further, in protective cover plate 200, nano-particle 202 with it is soft
The weight ratio of property base material 201 is preferably 0.4：1~0.7：1.
The thickness of protective cover plate 200 can be configured according to the species of flexible parent metal 201 and nano-particle 202, specifically
To say, the segment of flexible parent metal 201 is softer, such as when containing more alkane chain in flexible parent metal 201, the nano-particle of addition
202 average grain diameter is smaller, and the thickness of protective cover plate 200 can be smaller, conversely, what is contained in flexible parent metal 201 is more
Rigid radical, such as phenyl ring, the thickness of protective cover plate 200 can be larger.In a preferred embodiment, protective cover plate 200
Thickness is 10~100 μm, suitable with the thickness of thin-film material, and protective cover plate 200 and the existing glass material of the thickness protect
Cover board or hard material layer are compared, and thickness is thinner so that protective cover plate 200 not only has higher light transmission rate, does not influence to show
The display effect of showing device 1, and due to the preferable protection effect added with nano-particle 202, effectively protect display panel
100, take into account display and protective action.Further, the thickness of protective cover plate 200 is preferably 10~60 μm.
In one embodiment, display device 1 further includes the polarisation between display panel 100 and protective cover plate 200
Piece 300 and the touch control layer 400 between protective cover plate 200 and polaroid 300.Wherein, polaroid 300 can pass through optics
Transparent adhesive tape (not shown) is attached at the display side of display panel 100, for preventing natural light from entering display panel 100, by nature
Light polarization is on specific direction, so as to prevent natural light from influencing the image quality of display panel 100.Touch control layer 400 can use condenser type
Touch-control structure, can also use resistance-type touch structure, and the present invention is not limited in its kind, and the concrete structure of touch control layer 400 uses
The prior art, it will not be described here.In one embodiment, touch control layer 400 is in contact with protective cover plate 200.
Protective cover plate 200 can be by using existing film build method system after mixing flexible parent metal 201 and nano-particle 202
Into, as an example, make protective cover plate 200 method include but not limited to be ink jet printing (Ink Jet Printing) method,
(Coating) method of coating, chemical vapor deposition (CVD) method, atomic layer deposition (ALD) method.To enable nano-particle 202 uniform
It is dispersed in flexible parent metal 201, can be by using ultrasonic disperse, addition dispersant or shake before the film forming of protective cover plate 200
Swinging the mode such as scattered makes nano-particle 202 be homogenously mixed together with flexible parent metal 201 or its presoma.
By taking rubbing method as an example, when making protective cover plate 200, first, prepared using modes such as radical polymerizations with crosslinking
The solution of the high molecular material of net structure；Then, nano-particle 202 is added in the solution of above-mentioned high molecular material, and
Nano-particle 202 is set to be dispersed in above-mentioned solution by shaking process for dispersing；Finally, the molten of nano-particle 202 will be included
Liquid is coated on the side of the light extraction of display panel 100 by rubbing method, and carries out being drawn into film, forms protective cover plate 200.
To sum up, the present invention is by using the protective cover plate for including flexible parent metal and nano-particle, flexible parent metal and nanoparticle
Son is located in same layer, and becomes one structure, and the protective cover plate of formation not only has good bending and flexibility function, but also
The nano-particle of flexible parent metal hardness can be increased due to the addition of so that the hardness increase of protective cover plate, enhances protective cover
The scratch resistance and scuffing ability of plate, and can effectively protect internal display panel.
Although the embodiment of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, those of ordinary skill in the art are not departing from the principle of the present invention and objective
In the case of above-described embodiment can be changed within the scope of the invention, change, replace and modification.
Claims (15)
- A kind of 1. display device, it is characterised in that including：Display panel, has a display side；Protective cover plate, positioned at the display side of the display panel, the protective cover plate includes flexible parent metal and positioned at the flexibility The nano-particle that can increase the flexible parent metal hardness in base material.
- 2. display device according to claim 1, it is characterised in that the flexible parent metal is high molecular material.
- 3. display device according to claim 2, it is characterised in that the high molecular material has cross-linked structure.
- 4. display device according to claim 2, it is characterised in that the high molecular material is selected from makrolon, poly- naphthalene Naphthalate, carbon fiber, polyimides, cyclic olefin polymer, polyethylene terephthalate, triacetate fiber At least one of element, polyacrylate polymers.
- 5. display device according to claim 1, it is characterised in that the nano-particle is selected from fluorine-containing organic silicon nanoparticle Son, acrylic system nano-particle, SiO2Nano-particle, Al2O3Nano-particle, SiOC nano-particles, SiNx nano-particles, TiAlN At least one of nano-particle, CrN nano-particles, TiAlCrN nano-particles.
- 6. display device according to claim 5, it is characterised in that the fluorine-containing organic silicon nano-particle is selected from fluorine-containing poly- Dimethyl siloxane nano-particle, fluorinated polysiloxane nano-particle, fluorine-containing organic silicon resin nano particle, fluorine-containing tetramethyl two At least one of siloxane nanoparticles.
- 7. display device according to claim 5, it is characterised in that acrylic system nano-particle is selected from poly- methyl-prop E pioic acid methyl ester nano-particle, polyisobutyl acrylate nano-particle, polyacrylic acid N-butyl nano-particle, polyacrylic acid -2- hydroxyls At least one of base propyl ester nano-particle, polyacrylic acid n-octyl nano-particle, polyacrylic acid cyclohexyl nano-particle.
- 8. display device according to claim 1, it is characterised in that the average grain diameter of the nano-particle for 50~ 500nm。
- 9. display device according to claim 1, it is characterised in that the weight of the nano-particle and the flexible parent metal Than for 0.1：1~1：1.
- 10. display device according to claim 1, it is characterised in that the thickness of the protective cover plate is 10~100 μm.
- 11. display device according to claim 1, it is characterised in that the display device is further included positioned at the display Polaroid between panel and the protective cover plate and the touch control layer between the protective cover plate and the polaroid.
- 12. display device according to claim 11, it is characterised in that the touch control layer connects with the protective cover plate Touch.
- 13. according to the display device described in claim 1 to 12 any one, it is characterised in that the display panel is flexibility Display panel.
- 14. display device according to claim 13, it is characterised in that the flexible display panels include flexible base board, Encapsulated layer and the light-emitting component between the flexible base board and the encapsulated layer.
- 15. display device according to claim 14, it is characterised in that the light-emitting component is organic electroluminescent member Part.
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| CN201610915214.0A CN107968154A (en) | 2016-10-20 | 2016-10-20 | A kind of display device |
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| CN201610915214.0A CN107968154A (en) | 2016-10-20 | 2016-10-20 | A kind of display device |
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| CN108962962A (en) * | 2018-07-31 | 2018-12-07 | 京东方科技集团股份有限公司 | A kind of flexible display panels, its production method and display device |
| CN109690663A (en) * | 2018-09-26 | 2019-04-26 | 京东方科技集团股份有限公司 | The hardness enhancement layer of flexible display apparatus and surface hardness and mechanical strength for enhancing flexible display panels |
| CN110635063A (en) * | 2019-08-30 | 2019-12-31 | 昆山工研院新型平板显示技术中心有限公司 | Display panel and preparation method thereof |
| CN112889144A (en) * | 2018-10-22 | 2021-06-01 | 深圳市柔宇科技股份有限公司 | Flexible substrate, flexible panel and electronic device |
| CN113936555A (en) * | 2020-07-14 | 2022-01-14 | 乐金显示有限公司 | Cover window and flexible display device having the same |
| CN114335120A (en) * | 2021-12-30 | 2022-04-12 | 厦门天马显示科技有限公司 | Display panel and display device |
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| CN113936555A (en) * | 2020-07-14 | 2022-01-14 | 乐金显示有限公司 | Cover window and flexible display device having the same |
| CN113936555B (en) * | 2020-07-14 | 2024-01-02 | 乐金显示有限公司 | Cover window and flexible display device having the same |
| US11978370B2 (en) | 2020-07-14 | 2024-05-07 | Lg Display Co., Ltd. | Cover window and flexible display device having the same |
| CN114335120A (en) * | 2021-12-30 | 2022-04-12 | 厦门天马显示科技有限公司 | Display panel and display device |
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