CN108766982A - Flexible display screen and flexible display apparatus - Google Patents
Flexible display screen and flexible display apparatus Download PDFInfo
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- CN108766982A CN108766982A CN201810526471.4A CN201810526471A CN108766982A CN 108766982 A CN108766982 A CN 108766982A CN 201810526471 A CN201810526471 A CN 201810526471A CN 108766982 A CN108766982 A CN 108766982A
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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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
Abstract
The present invention relates to a kind of flexible display screens, including：Substrate layer；Luminescent layer is set on the substrate layer；Display layer is set on the luminescent layer, and the display layer includes polaroid and the colored filter on polaroid；The substrate layer, luminescent layer, polaroid and colored filter at least two levels in be equipped with magnetic material, the pole orientation for the magnetic material being equipped at least two level is consistent.It is attracting two-by-two between the magnetic material added between each level since the pole orientation of magnetic material is consistent when above-mentioned level stacks, to reinforce the pressing force between level, reduce the probability that failure is detached caused by shielding body folded bent.
Description
Technical field
The present invention relates to display technology fields, more particularly to flexible display screen and flexible display apparatus.
Background technology
With the fast development of the mobile terminals such as smart mobile phone, it is whole that consumer is no longer satisfied with medium-sized intelligent mobile
End, the mobile terminal of application flexibility display screen become the development trend of the industry.
Existing Flexible Displays screen products, generally use seal, sealing materials are packaged it, so that Flexible Displays screen products
Each level be packaged into an entirety.
Applicant has found during realizing the prior art：Existing Flexible Displays screen products, after multiple bending, screen
Internal portion will produce bending stress, can cause to detach gradually between level after long-time use, to make screen body fail.
Invention content
Based on this, it is necessary to after being directed to Flexible Displays screen products long-time use existing in the prior art, between level
Separation is led to the problem of, the flexible display screen to be attracted each other by magnetic material between a kind of each level is provided and Flexible Displays fill
It sets.
A kind of flexible display screen, including：Substrate layer；Luminescent layer is set on the substrate layer；Display layer is set to the hair
On photosphere, the display layer includes polaroid and the colored filter on polaroid；The substrate layer, luminescent layer, polarisation
Magnetic material is equipped at least two levels of piece and colored filter, the magnetic material being equipped at least two level
Pole orientation is consistent.
Above-mentioned flexible display screen, including substrate layer, luminescent layer and polaroid, colored filter, and in substrate layer, hair
Photosphere, polaroid, at least two levels of colored filter are interior equipped with magnetic material, and the pole orientation of magnetic material is consistent.
When above-mentioned level stacks, since the pole orientation of magnetic material is consistent, between the magnetic material added between each level two-by-two
It is attracting, to reinforce the pressing force between level, reduce the probability that failure is detached caused by shielding body folded bent.
The flexible display screen, the substrate layer include in one of the embodiments,：Conducting foam layer, it is described to lead
Magnetostriction materials are equipped in electric foamed cotton layer；Support membrane is set on the conducting foam layer；Hard magnetic is equipped in the support membrane
Material.
Above-mentioned flexible display screen is added with magnetostriction materials in conducting foam layer, when flexible display screen shape is bent
Afterwards, according to Villari effect, the intensity of magnetization of magnetic material will change, to change the magnetization shape of magnetostriction materials
State.Since the magnetized state of magnetostriction materials changes, its own Young's modulus of elasticity will produce variation, to will produce
Certain elongates or shortens, and alleviates the screen irrecoverable problem of body curved transitions.
The flexible display screen, the luminescent layer include in one of the embodiments,：Kapton；It shines
Device, the luminescent device are set on Kapton, and the luminescent device includes thin film transistor (TFT) or organic light-emitting diodes
At least one of pipe.
The flexible display screen, the luminescent layer further include in one of the embodiments,：Flexible PCB is set to
On the Kapton, it is connected with the luminescent device, for driving the luminescent device to shine.
The flexible display screen in one of the embodiments, further includes：Encapsulated layer is set to the luminescent layer and institute
It states between display layer；The encapsulated layer includes at least one of barrier layer for gases, thin-film encapsulation layer.
Above-mentioned flexible display screen, increases encapsulated layer between luminescent layer and display layer, and encapsulated layer includes barrier layer for gases
Or/and thin-film encapsulation layer, to make luminescent layer, substrate layer inside flexible display screen be not easy the shadow by outside air and hydrone
It rings, increases the service life of flexible display screen.
The flexible display screen in one of the embodiments, leads between the polaroid and the colored filter
Cross OCA optics glue stickings.
The flexible display screen in one of the embodiments, the polaroid is interior to be equipped with retentive material.
The flexible display screen in one of the embodiments, the colored filter is interior to be equipped with soft magnetic material.
Above-mentioned Flexible Displays screen products, colored filter are interior smaller equipped with the thin narrow, remanent magnetism of hysteresis loop and coercive force
Soft magnetic material, it is magnetic smaller in the case of no extra electric field, thus can increase each level of flexible display screen it
Between mutual attractive force while, reduce to external influence.
The flexible display screen, the polaroid include in one of the embodiments,：Release film；First protective layer,
On the release film；Polyvinyl alcohol film is set on first protective layer；Second protective layer is set to the polyethylene
On alcohol film；It is be bonded by sticker between the release film and first protective layer, magnetic material is equipped in the sticker
Material.
A kind of flexible display apparatus, including：Flexible display screen described in any one as above；Power module, and it is described soft
Property display screen be connected, for for the flexible display screen power.
Above-mentioned flexible display apparatus, including power module and the flexible display screen that is connected with power module.The Flexible Displays
Screen includes substrate layer, luminescent layer and polaroid, colored filter, and in substrate layer, luminescent layer, polaroid, colored filter
At least two levels in be equipped with magnetic material, and the pole orientation of magnetic material is consistent.When above-mentioned level stacks, due to magnetic
The pole orientation of property material is consistent, attracting two-by-two between the magnetic material added between each level, to reinforce between level
Pressing force reduces the probability that failure is detached caused by shielding body folded bent.
Description of the drawings
Fig. 1 is the hierarchical structure schematic diagram of flexible display screen in one embodiment.
Fig. 2 is the hierarchical structure schematic diagram of flexible display screen in another embodiment.
Fig. 3 is the hierarchical structure schematic diagram of flexible display screen in another embodiment.
Fig. 4 is the structural schematic diagram of polaroid in one embodiment.
Fig. 5 is the hierarchical structure schematic diagram of flexible display screen in a specific embodiment.
Fig. 6 is the pole orientation schematic diagram of magnetic material in a specific embodiment.
Fig. 7 is the gravitation schematic diagram between magnetic material in a specific embodiment.
Wherein, parts list represented by the reference numerals are as follows：
100, substrate layer；110, conducting foam layer；
120, support membrane；200, luminescent layer；
210, PI films；220, luminescent device；
300, encapsulated layer；310, thin-film encapsulation layer；
320, barrier layer for gases；400, display layer；
410, polaroid；412, release film；
413, sticker；414, the first protective layer；
416, polyvinyl alcohol film；418, the second protective layer；
420, colored filter.
Specific implementation mode
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings to the present invention
Specific implementation mode be described in detail.Many details are elaborated in the following description in order to fully understand this hair
It is bright.But the invention can be embodied in many other ways as described herein, those skilled in the art can be not
Similar improvement is done in the case of violating intension of the present invention, therefore the present invention is not limited by following public specific embodiment.
With the rapid development of Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED), bendable
The folded flexible display screen of complications becomes the mainstream of display industry.However as emerging technology industry, existing flexible display screen skill
There are still some problems for art.Applicant has found during realizing traditional technology：Existing OLED display screen, as screen body is more
Secondary fold bending, since number of bends is excessive or bending degree is excessive, shields internal portion and will produce bending stress.It is dry in no external force
It relates to down, due to the presence of bending stress, flexible display screen can be always maintained at the state of certain bending degree, so as to cause screen body
The problems such as internal circuit and device damage, screen body level separation, cause to shield body failure.
As shown in Figures 1 and 2, the present embodiment provides a kind of flexible display screens, including：Substrate layer 100, is shown luminescent layer 200
Show layer 400.
Specifically, substrate layer 100 is the substrate that flexible display screen bottommost is used to support display device.Luminescent layer 200 is set
In on substrate layer 100, after flexible display screen is powered, 200 electroluminescent of luminescent layer.Display layer 400 is set on luminescent layer, works as hair
After photosphere 200 shines, display layer is for showing color image.Wherein, display layer 400 including polaroid 410 and is set to polaroid
On colored filter 420.In the present embodiment, the substrate layer 100 of the flexible display screen, luminescent layer 200, polaroid 410 and
Magnetic material can be equipped at least two levels in colored filter 420, for example, can be in substrate layer 100 and luminescent layer
Magnetic material is set in 200, magnetic material can also be set in polaroid 410 and colored filter 420, it is, of course, also possible to
Magnetic material is set in substrate layer 100 and polaroid 410 or colored filter 420, it can also be in substrate layer 100, luminescent layer
200, it is respectively provided with magnetic material etc. in polaroid 410 and colored filter 420.And the pole orientation of magnetic material is consistent, so that
Magnetic material in different levels is attracting two-by-two each other.The pole orientation of magnetic material in each level can be the poles S upward, N
Pole downward, can also be the poles N upward, the poles S downward.After each level stacks successively, there is a natural attraction between the sexes for the magnetic material in different levels.
Above-mentioned flexible display screen, including substrate layer 100, luminescent layer 200 and polaroid 410, colored filter 420, and
Substrate layer 100, luminescent layer 200, polaroid 410, colored filter 420 at least two levels in be equipped with magnetic material, and
The pole orientation of magnetic material is consistent.When above-mentioned level stacks successively, since the pole orientation of magnetic material is consistent, each level
Between there is a natural attraction between the sexes two-by-two between the magnetic material that adds, to reinforce the pressing force between level, reduce because screen body fold it is curved
The probability of failure is detached caused by song.
In one embodiment, as shown in Fig. 2, substrate layer 100, which is flexible display screen bottommost, is used to support display device
Substrate.Substrate layer 100 may include conducting foam layer 110 and the support membrane 120 on conducting foam layer 110.Conduction bubble
Cotton is that conductive fabric is wrapped up on flame-retardant sponge, and after treatment, conducting foam can have good electric conductivity.It is led to increase
The electric conductivity of electric foamed cotton layer 110 can also add copper foil in the conducting foam of conducting foam layer 110.Support membrane 120 is set to and leads
On electric foamed cotton layer 110, it is used to support other levels on substrate layer 100.In conducting foam layer 110 and support membrane 120
Magnetic material can be set.Magnetic material could be provided as one kind of soft magnetic material or retentive material.Due to hard magnetic
Material has larger remanent magnetism and coercive force, the screen body level separation problem that can preferably solve, therefore, in the present embodiment
It is preferred that retentive material is arranged in substrate layer 100.Retentive material may include that such as high-carbon steel, alnico alloy, titanium cobalt close
Gold etc. it is one or more.
Luminescent layer 200 is set on substrate layer 100, electroluminescent after being powered for flexible display screen.Luminescent layer 200 can wrap
It includes for polyimides (Polyimide Film, the PI) film of substrate and the luminescent device 220 on PI films 210.Hair
Optical device 220 may include the one or more of OLED or thin film transistor (TFT) (Thin Film Transistor, TFT).OLED
Can be active matrix organic light-emitting diode (Active-matrix organic light emitting diode,
AMOLED) or passive matrix organic light emitting diode (Passive-matrix organic light emitting diode,
PMOLED) one or more.Magnetic material can also be set in luminescent layer 200.It is worked normally not influencing luminescent layer 200
Under the premise of, setting magnetic material can preferably solve screen body level separation problem in luminescent layer 200.
Display layer 400 is set on luminescent layer 200, and after luminescent layer 200 shines, display layer 400 is for showing color image.
Display layer 400 may include the polaroid 410 for polarisation and the colored filter 420 for optical filtering.Polaroid 410 it is basic
Mechanism may include：Be placed in it is most intermediate for optically active polyvinyl alcohol film, be pasted on polyvinyl alcohol film both sides
The first protective layer and the second protective layer.First protective layer and the second protective layer can be cellulose triacetate films, for protecting
Shield polyvinyl alcohol film is not hydrolyzed.The wave-length coverage of light of the colored filter 420 for accurately selecting to need to pass through, so that will
The light of appropriate wavelength is not suitable for the light emitting of wavelength by colored filter 420.It can in polaroid 410 and colored filter 420
To be equipped with magnetic material, magnetic material can be one kind of soft magnetic material or retentive material.Soft magnetic material has smaller
Remanent magnetism and coercive force.Since colored filter 420 occupy the outer layer of flexible display screen screen body, it is contemplated that ectocine,
Magnetic material in colored filter 420 can be preferably soft magnetic material.Soft magnetic material may include such as silicon steel sheet, iron nickel
Alloy, Ferrite Material etc. it is one or more.Magnetic material in polaroid 410 can be preferably retentive material, with more
Good solves the problems, such as that screen body level detaches.
In each level of flexible display screen, should at least there are two levels to be equipped with magnetic material, with by magnetic attracting
Alleviate the separation problem of each level of flexible display screen.
In one embodiment, the substrate layer 100 of flexible display screen includes：Conducting foam layer 110, support membrane 120.
Specifically, conducting foam layer 110 is the flame-retardant sponge for being enclosed with conductive fabric, have that electric conductivity is good, impedance energy
The good characteristic that power is low, material is light, anticorrosive and strong oxidation resistance.Conducting foam can be common conductive foam, nickel-clad copper
It is conducting foam, gold-plated conducting foam, plating carbonaceous conductive foam, tin plating conducting foam, conductive aluminum foil foam, copper-foil conducting electricity foam, complete
Orientation conducting foam etc. it is one or more.To improve the electric conductivity of conducting foam layer 110, and consider cost performance factor,
Can preferably copper-foil conducting electricity foam as conducting foam layer 110.
Magnetostriction materials can be equipped in conducting foam layer 110.When magnetostriction refers to that the material magnetizes in magnetic field,
It can be elongated or shortened in the direction of magnetization, when magnetic field changes, significant changes also occur for size.Magnetostriction materials
Can be metallic nickel and its alloy, such as nickel cobalt (alloy), nickel cobalt evanohm；Can also be ferroalloy, as iron-nickel alloy, iron aluminium close
Gold, Ⅴ-permandur alloy etc.；Can also be ferrite magnetostriction materials or rare earth intermetallic compound magnetostriction materials etc..It is soft
Property display screen each level in after addition magnetic material forms magnetic field, when the shape of flexible display screen bends or other changes
Change, according to Villari effect, magnetic field intensity can change.Again according to Δ E effects, when magnetic field intensity changes, mangneto
Telescopic material can cause itself Young's modulus of elasticity to change due to the change of its magnetized state.At this point, magnetostriction material
Material will produce it is certain elongate or shorten, to promote shield body restore, alleviate screen the irrecoverable problem of body curved transitions.
Support membrane 120 is set on conducting foam layer 110, is used to support the luminescent layer 200 and display layer of flexible display screen
400.The material of support membrane 120 can be thin polymer film or other polyester materials.Soft magnetism can be provided in support membrane 120
Material or retentive material, such as silicon steel sheet, iron-nickel alloy, Ferrite Material, high-carbon steel, alnico alloy, titanium-cobalt alloy
It is one or more.Compared to soft magnetic material, the area of hysteresis loop of retentive material is larger, has larger remanent magnetism and coercive force
Power can preferably solve the problems, such as that flexible display screen screen body level detaches.
In one embodiment, luminescent layer 200 includes：PI films 210, luminescent device 220.
PI films 210 are the film-substrate of luminescent device 220, are a kind of film class insulating materials.PI films 210 can be by
Pyromellitic acid anhydride and diaminodiphenyl ether are formed through imidization in intensive polar solvent through polycondensation and casting film-forming again, are had
There is the excellent spy that heat-resist, good mechanical property, chemical stability are high, humidity resistance is good, radiation resistance is good, dielectric properties are good
Property.
Luminescent device 220 is set on PI films 210, can be the one or more of TFT or OLED, can also be other electricity
Electroluminescence device.OLED can be AMOLED, can also be PMOLED.
Under the premise of not influencing the normal work of luminescent layer 200, magnetic material can be equipped in luminescent layer 200.Magnetic material
Material includes retentive material or soft magnetic material.
In one embodiment, luminescent layer 200 further includes：Flexible PCB.
Flexible PCB is using PI films 210 or mylar as a kind of printing with height reliability made of base material
Circuit board has the characteristics that Distribution density is high, light-weight, thickness is thin, bending is good.Flexible PCB is set to PI films
On 210, can be set between PI films 210 and luminescent device 220, can also be set to PI films 210 on and luminescent device 220
It is set up in parallel.Flexible PCB should connect luminescent device 220, and when flexible PCB works, driving luminescent device 220 shines.
In one embodiment, as shown in figure 3, flexible display screen further includes：Encapsulated layer 300.
Encapsulated layer 300 be set between luminescent layer 200 and display layer 400, for protect luminescent layer 200 not by outside air,
The destructions such as water.Encapsulated layer 300 can be the barrier layer for gases 320 for stopping gas and the thin-film encapsulation layer for stopping water
310 it is one or more.Barrier layer for gases 320 and being made for thin-film encapsulation layer 310 can use chemical vapour deposition technique,
Can use such as magnetron sputtering method physical vaporous deposition.Barrier layer for gases 320 can be silicon nitride (SiN) or silicon nitride
With the stack layer (SiNx/SiOx) of silica.Thin-film encapsulation layer 310 can be polyethylene terephthalate (PET), dioxy
Change titanium (TiO2), silica (SiO2), alundum (Al2O3) (Al2O3) it is one or more.It is to be appreciated that gas barrier
Layer 320 and the material of thin-film encapsulation layer 310 are not limited to above-mentioned several, the work of barrier layer for gases 320 and thin-film encapsulation layer 310
Be stop gas, water or other may destroy passing through for luminescent layer 200 and the molecule of other build-up layer grades, therefore, can meet
The compound film of the effect is interpreted as within the protection domain of the present embodiment.
Above-mentioned flexible display screen, increases encapsulated layer 300 between luminescent layer 200 and display layer 400, and encapsulated layer 300 wraps
Barrier layer for gases 320 or/and thin-film encapsulation layer 310 are included, to make luminescent layer 200 inside flexible display screen, substrate layer 100 not
It is easily influenced by outside air and hydrone, increases the service life of flexible display screen.
In one embodiment, pass through OCA optics glue stickings between polaroid 410 and colored filter 420.
OCA optical cements are set between polaroid 410 and optical filter, and light transmittance can be higher than 90%, for being bonded polaroid
410 and optical filter.Resistance-type optical cement may be used in OCA optical cements, can also use condenser type optical cement, thickness should be low
In 250 μm.It should be understood that the thickness of OCA optical cements less than 250 μm be for light transmittance the considerations of, not to this reality
Example is applied to define.
In one embodiment, it is equipped with retentive material in polaroid 410, soft magnetism material is equipped in colored filter 420
Material.
As the display layer 400 of flexible display screen, colored filter 420 is set on polaroid 410, and can pass through OCA
Optical cement is Nian Jie with polaroid 410.Under the premise of not influencing polaroid 410 and colored filter 420 works normally, Ke Yi
Retentive material, such as high-carbon steel, alnico alloy, titanium-cobalt alloy are equipped in polaroid 410.Retentive material have area compared with
Big hysteresis loop, while its remanent magnetism and coercive force are larger, and retentive material is provided in polaroid 410, it can be preferable
Each level separation problem of alleviation screen body.It can be equipped with retentive material in colored filter 420, soft magnetism material can also be equipped with
Material.In view of colored filter 420 is located at the outer layer of flexible display screen, soft magnetism material can be set in colored filter 420
Material, such as silicon steel sheet, iron-nickel alloy, Ferrite Material.The hysteresis loop of soft magnetic material is relatively narrow, remanent magnetism and coercive force compared with
It is small, when the magnetization of no externally-applied magnetic field magnetizes it, rapid wear loss of excitation.Soft magnetic material is set in colored filter 420,
It can be reduced to external influence while mutual attractive force between increasing each level of flexible display screen.It is understood that
It is that may be set to be soft magnetic material in polaroid 410, may be set to be retentive material in colored filter 420,
It is understood within the protection domain of the present embodiment.
In one embodiment, as shown in figure 4, the polaroid 410 of flexible display screen includes：Release film 412, first is protected
Layer 414, polyvinyl alcohol film 416, the second protective layer 418.
Polaroid 410 is polarized light piece to be made and electric field side for the natural light for not having deflection polarity to be converted to polarised light
Pass through to vertical light, to allow display panel that can normally show image.In the present embodiment, polaroid 410 can be adopted
With any in iodine polarizing piece or dyestuff system polaroid, iodine polarizing piece is easy to get high transmittance, high-polarization, high temperature resistant
High humidity poor performance；Dyestuff system polaroid is not easy to obtain high transmittance, high-polarization, and the resistance to high wet performance of high temperature resistant is strong.
Release film 412 is also known as stripping film, seperation film etc., can be chemical application film, can also be PET (poly- to benzene two
Formic acid glycol ester) heat-sealing film.According to its color classification, release film 412 includes：Red release film, yellow release film, green from
It is type film, blue release film, milky release film, yellow release film, matt release film, pearly-lustre release film, black release film, transparent
Release film, translucent release film, porcelain white release film etc..It in the present embodiment, can to ensure the light transmission rate of polaroid 410
To select milky release film, light white release film, mute white release film, pure white release film, transparent release film etc..
First protective layer 414 is set on release film 412, for protecting the polyvinyl alcohol on the first protective layer 414 thin
Film 416.The cellulose triacetate film of high light transmission rate, water-tolerant usually may be used in first protective layer 414.
Polyvinyl alcohol film 416 is set on the first protective layer 414, and optically active, refractive index can be 1.52 or so.
Second protective layer 418 is set on polyvinyl alcohol film 416, and with 414 collective effect of the first protective layer, guarantor is completely covered
Polyvinyl alcohol film 416 is protected, it is hydrolyzed to avoid polyvinyl alcohol film 416.Second protective layer 418 generally also uses three acetic acid fine
The plain film of dimension.
It is Nian Jie it to be typically provided with sticker 413 between release film 412 and the first protective layer 414.It can be equipped in sticker 413
Magnetic material.In the present embodiment, the magnetic material being equipped in sticker 413 can be retentive material, such as high-carbon steel, aluminium nickel
Cobalt alloy, titanium-cobalt alloy etc. can also be soft magnetic material, such as silicon steel sheet, iron-nickel alloy, Ferrite Material.Magnetic material
In sticker 413, the normal work of polaroid 410 can not be influenced.
In the present embodiment, it is also provided with protective film on the second protective layer 418 of polaroid 410, for protecting second
Protective layer 418 is not worn.
In a specific embodiment, as shown in Figures 5 and 6, a kind of flexible display screen, including：Substrate layer shines
Layer, encapsulated layer and display layer.
Substrate layer includes being set to the conducting foam layer 110 of bottom, and the support membrane 120 on conducting foam layer 110.It leads
Electric bubble face layer 110 uses copper-foil conducting electricity foam, and magnetostriction materials are added in copper-foil conducting electricity foamed cotton layer.Add in support membrane 120
Added with retentive material, upward, the poles N are downward for the poles S of retentive material.
Luminescent layer is set on substrate layer 100.Luminescent layer includes for the PI films 210 of substrate and set on PI films 210
Luminescent device 220.Luminescent device 220 uses OLED matrixes.Luminescent layer further include be set up in parallel with OLED matrixes, and with OLED squares
Battle array is connected, the flexible PCB (not shown) for driving OLED matrix luminescents.
Encapsulated layer is set on OLED matrixes, including thin-film encapsulation layer 310 and the gas barrier in thin-film encapsulation layer 310
Layer 320.Thin-film encapsulation layer 310 and barrier layer for gases 320 are for preventing hydrone and air from destroying OLED matrixes.
Display layer is set on encapsulated layer, including polaroid 410, the colored filter 420 on polaroid 410 and is used for
It is bonded the OCA optical cements of polaroid 410 and colored filter 420.Polaroid 410 includes occuping intermediate polyvinyl alcohol film,
Set on polyvinyl alcohol film both sides two layers of cellulose triacetate film, be respectively arranged on two layers cellulose triacetate film both sides
Release film and protective film.There is sticker adhesion between release film and cellulose triacetate film adjacent thereto.It is set in sticker
There are hard magnetic particles, upward, the poles N are downward for the poles S of hard magnetic particles.Polaroid 410 in use, release film and encapsulated layer gas
Barrier layer 320 is disposed adjacent.Colored filter 420 be set to polaroid 410 on, and OCA optics glue stickings colored filter 420 and
The protective film of polaroid 410.Soft magnetic material is equipped in colored filter 420, upward, the poles N are downward for the poles S of soft magnetic material.
Above-mentioned flexible display screen is equipped with magnetic material in colored filter 420, polaroid 410, support membrane 120.When each
When level stacks successively, as shown in fig. 7, two two-phase of magnetic material in colored filter 420, polaroid 410 and support membrane 120
It inhales, to generate one to the extruding force for shielding internal portion, alleviates the separation between each level of flexible display screen.Meanwhile polaroid
410 and support membrane 120 in be provided that hard magnetic particles, area of hysteresis loop is larger, and remanent magnetism and coercive force are stronger, can be with
Largely achieve the effect that relief layer grade detaches.Soft magnetic particles are set in colored filter 420, can be alleviated after magnetization
Level detaches, simultaneously as soft magnetic particles remanent magnetism and coercive force are small, can reduce it to external influence.Meanwhile it is conductive
Magnetostriction materials are equipped in foamed cotton layer 110, when the shape of flexible display screen changes, according to Villari effect, polarisation
The magnetic field intensity that retentive material in piece 410 and support membrane 120 generates can change.With the variation of magnetic field intensity, magnetic
Cause the magnetized state in telescopic material that can change correspondingly, to which the Young's modulus of elasticity of magnetostriction materials can be influenced.At this point, magnetic
Cause telescopic material will produce it is certain elongate or shorten, to promote shield body restore, alleviate screen body curved transitions it is irrecoverable
Problem.
In one embodiment, a kind of flexible display apparatus, including flexible display screen and power module.
Flexible display screen can be the flexible display screen in any one above-mentioned embodiment.The flexible display screen is at least two
Magnetic material is added in a level, and the magnetic material pole orientation in any level is identical, so that addition magnetic material
Level between generate attraction, alleviate the level separation problem of flexible display screen.
Power module is connected with flexible display screen, for powering for the flexible PCB in flexible display screen.The flexibility is aobvious
When showing device works, flexible PCB is powered, and luminescent device shines under the control of flexible PCB, polarizes and filters through polaroid
Mating plate green light, ultimately forms image.
Above-mentioned flexible display apparatus, including power module and the flexible display screen that is connected with power module.The Flexible Displays
Screen includes substrate layer, luminescent layer and polaroid, colored filter, and in substrate layer, luminescent layer, polaroid, colored filter
At least two levels in be equipped with magnetic material, and the pole orientation of magnetic material is consistent.When above-mentioned level stacks, due to magnetic
The pole orientation of property material is consistent, attracting two-by-two between the magnetic material added between each level, to reinforce between level
Pressing force reduces the probability that failure is detached caused by shielding body folded bent.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of flexible display screen, which is characterized in that including：
Substrate layer；
Luminescent layer is set on the substrate layer；
Display layer is set on the luminescent layer, and the display layer includes polaroid and the colored filter on polaroid；
The substrate layer, luminescent layer, polaroid and colored filter at least two levels in be equipped with magnetic material, it is described at least
The pole orientation for the magnetic material being equipped in two levels is consistent.
2. flexible display screen according to claim 1, which is characterized in that the substrate layer includes：
Conducting foam layer, the conducting foam layer is interior to be equipped with magnetostriction materials；
Support membrane is set on the conducting foam layer；Retentive material is equipped in the support membrane.
3. flexible display screen according to claim 1, which is characterized in that the luminescent layer includes：
Kapton；
Luminescent device, the luminescent device be set to the Kapton on, the luminescent device include thin film transistor (TFT) or
At least one of Organic Light Emitting Diode.
4. flexible display screen according to claim 3, which is characterized in that the luminescent layer further includes：
Flexible PCB is set on the Kapton, is connected with the luminescent device, for driving the luminescent device
It shines.
5. flexible display screen according to claim 1, which is characterized in that further include：
Encapsulated layer is set between the luminescent layer and the display layer；The encapsulated layer includes barrier layer for gases, thin-film encapsulation layer
At least one of.
6. flexible display screen according to claim 1, which is characterized in that between the polaroid and the colored filter
Pass through OCA optics glue stickings.
7. flexible display screen according to claim 6, which is characterized in that be equipped with retentive material in the polaroid.
8. flexible display screen according to claim 6, which is characterized in that be equipped with soft magnetism material in the colored filter
Material.
9. flexible display screen according to claim 6, which is characterized in that the polaroid includes：
Release film；
First protective layer is set on the release film；
Polyvinyl alcohol film is set on first protective layer；
Second protective layer is set on the polyvinyl alcohol film；
It is be bonded by sticker between the release film and first protective layer, magnetic material is equipped in the sticker.
10. a kind of flexible display apparatus, which is characterized in that including：
Flexible display screen as described in claim 1 to 9 any one；
Power module is connected with the flexible display screen, for powering for the flexible display screen.
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Application publication date: 20181106 Assignee: Yungu (Gu'an) Technology Co., Ltd.|Kunshan Guoxian photoelectric Co., Ltd.|Kunshan Institute of technology new flat panel display technology center Co., Ltd Assignor: Bazhou Yungu Electronic Technology Co. Ltd. Contract record no.: X2019990000154 Denomination of invention: Flexible display screen and flexible display device License type: Common License Record date: 20191030 |
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