CN106019449A - Polarizing film layer, display device and manufacturing method thereof - Google Patents
Polarizing film layer, display device and manufacturing method thereof Download PDFInfo
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- CN106019449A CN106019449A CN201610365850.0A CN201610365850A CN106019449A CN 106019449 A CN106019449 A CN 106019449A CN 201610365850 A CN201610365850 A CN 201610365850A CN 106019449 A CN106019449 A CN 106019449A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3016—Polarising elements involving passive liquid crystal elements
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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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- General Physics & Mathematics (AREA)
- Liquid Crystal (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Polarising Elements (AREA)
Abstract
The invention discloses a polarizing film layer, a display device and a manufacturing method thereof. The polarizing film layer is arranged at the light extraction side of the display panel and includes a first oriented film, a second oriented film disposed opposite to the first oriented film, and a liquid crystal layer disposed between the first oriented film and the second oriented film, and the liquid crystal in the liquid crystal layer can be arranged along a predetermined orientation direction of the first oriented film and a predetermined orientation direction of the second oriented film. According to the invention, the effect of improving the bending radius of a flexible display and the tolerance performance in an environment of high temperature and high humidity is achieved.
Description
Technical field
The present invention relates to Display Technique field, especially relate to a kind of light polarizing film layer, display device and making thereof
Method.
Background technology
At present, the upper functional film layer attached of the display base plate (Panel) of flexible display is more, mainly wraps
Including polaroid, touch screen, protecting film etc., wherein, the effect of polaroid is by the natural light in external environment
The light absorption of display base plate may be reflected after entering display base plate.For ease of understanding, refer to Fig. 1 (figure
1 is the film layer structure schematic diagram of the flexible display screen according to prior art), at the film layer structure shown in Fig. 1
In, the thickness of touch screen and protective layer is typically at about 100um, and the thickness of polaroid is typically at 200um
Left and right, minimum also at about 100um, therefore polaroid thickness is bigger, is easily caused flexibility
Display screen overall flexibility display when bending bears bigger stress.And, the most generally use optical cement
Each functional film layer is attached onto, due to optical cement itself by (Optical Clear Adhesive, OCA)
Thickness also compared with big and to arrange the number of plies more, further increase the thickness of overall flexibility display, this causes
The bending radius of flexible display is less, more cannot realize folding, and number of bends the most easily occurs that film layer is opened
Split and the damage of functional film layer.It is additionally, since polaroid and uses specific materials, self of these specific materials
Attribute causes polaroid poor in the hot and humid tolerance waited under environment performance.
For above-mentioned technological deficiency, prior art does not provide a kind of effective solution.
Summary of the invention
Present invention is primarily targeted at a kind of bending radius that can reduce flexible display of offer, it is to avoid curved
The phenomenons such as film layer cracking that bent number of times is too much easily caused or damage, and the flexible display folded can be realized
The technical scheme of part.
In order to achieve the above object, according to an aspect of the invention, it is provided a kind of light polarizing film layer, it is used for
It is arranged on the light emission side of display floater, including the first oriented film, with described first oriented film relative sets
The second oriented film put, and the liquid between described first oriented film and described second oriented film
Crystal layer, the liquid crystal in described liquid crystal layer can be along the predetermined orientation direction and second of described first oriented film
The predetermined orientation direction arrangement of oriented film.
Preferably, this light polarizing film layer also includes: be arranged on described first oriented film and described second orientation is thin
Sealed plastic box between film, described sealed plastic box is centered around the surrounding of described liquid crystal layer and to be positioned at described first orientation thin
Film and the marginal area of described second oriented film.
Preferably, the thickness of described light polarizing film layer is less than or equal to 50um.
Preferably, the thickness range of described light polarizing film layer is 5um～8um.
According to another aspect of the present invention, it is provided that a kind of display device, this display device includes display surface
Plate, and it is arranged on the above-mentioned light polarizing film layer of described display floater light emission side.
Preferably, described first oriented film of described light polarizing film layer is formed at described display floater light emission side
On substrate.
Preferably, described display device also includes: touch panel, is arranged on the light emission side of described light polarizing film layer.
Preferably, described second oriented film of described light polarizing film layer is formed at described touch panel towards described
On the substrate of light polarizing film layer side.
Preferably, described display floater is flexible display panels.
Preferably, this display device also includes: be arranged on described touch panel the most described light polarizing film layer side
Cover sheet, and the optical cement between described touch panel and described cover sheet.
According to a further aspect of the invention, it is provided that the manufacture method of a kind of display device, described display dress
Put and include that display floater and touch panel, described method include: on the substrate of described display floater light emission side
Form first oriented film with the first predetermined orientation direction；Need towards described aobvious at described touch panel
Show and on the substrate of panel side, form second oriented film with the second predetermined orientation direction；Described first
Forming liquid crystal layer and sealed plastic box between oriented film and described second oriented film, described sealed plastic box is centered around institute
State the surrounding of liquid crystal layer and be positioned at described first oriented film and the marginal area of described second oriented film, institute
Stating the liquid crystal in liquid crystal layer can be along described first predetermined orientation direction and described second predetermined orientation direction
Arrangement.
Preferably, the process forming described first oriented film includes: at the base of described display base plate light emission side
One layer of oriented material is coated on plate；The oriented material of coating is carried out cured, obtains one first oriented layer；
According to described first predetermined orientation direction, described first oriented layer is carried out friction operation, then it is carried out clearly
Wash operation, formed and there is described first oriented film.
Preferably, the process forming described second oriented film includes: at described touch panel needs towards institute
State one layer of oriented material of coating on the substrate of display base plate side；The oriented material of coating is carried out at solidification
Reason, obtains one second oriented layer；According to described second predetermined orientation direction, described second oriented layer is carried out
Friction operation, then it is carried out operation, formed and there is described second oriented film.
Preferably, the process forming described liquid crystal layer includes: dispenser method on described first oriented film；
Edge coating sealing-in colloid at described second oriented film；According to described second oriented film towards institute
State the direction of the first oriented film, by involutory for described second oriented film on described first oriented film；Right
Described second oriented film and described first oriented film carry out hot pressing, form described liquid crystal layer and described envelope
Frame glue.
Preferably, described method also includes: at the substrate of described touch panel the most described display floater side
Upper formation optical cement；Described optical cement is formed a cover sheet.
Compared with prior art, light polarizing film layer of the present invention, display device and preparation method thereof, use
Liquid crystal material replaces layer of polarizer and the structure of optical cement layer, makes flexible display panels subtract realizing integral thickness
While thin, there is again the optical function characteristic of polarisation, such that it is able to realize that bent angle is less maybe can roll over
Folded display product.
Accompanying drawing explanation
Fig. 1 is the film layer structure schematic diagram of the flexible display screen according to prior art；
Fig. 2 is the structural representation of light polarizing film layer according to embodiments of the present invention；
Fig. 3 is the manufacture method flow chart of display device according to embodiments of the present invention；
Fig. 4 is the manufacturing process step schematic diagram of display device according to embodiments of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly
Chu, it is fully described by, it is clear that described embodiment is only a part of embodiment of the present invention, and not
It it is whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art is not making
The every other embodiment obtained on the premise of creative work, broadly falls into the scope of protection of the invention.
Liquid crystal can be divided into thermotropic liquid crystal and lysotropic liquid crystal.Thermotropic liquid crystal refers to by single compound or by minority
The liquid crystal that compound is formed through homogeneous mixture, this liquid crystal just manifests liquid crystalline phase in certain temperature range
Material, the molecular weight of the most typical long rod thermotropic liquid crystal is typically 200～about 500g/mol.Molten cause
Liquid crystal is the liquid crystal that a kind of two or more compound comprising solvated compounds is formed, and this liquid crystal exists
Time in solute molecule concentration is in certain limit in solution, liquid crystalline phase occurs, wherein, cause molecules align long-range
Orderly main cause is the interaction between solute and solvent molecule.At present, the optical physics of liquid crystal is special
Property application scope mainly include anisotropy, photolytic activity, light polarization direction characteristic, birefringence can be changed
Property and circular dichroism.
Self-characteristic based on liquid crystal, and the film layer structure shown in Fig. 1 is difficult to realize bent product shape
Formula, mainly utilizes liquid crystal can change this characteristic of light polarization direction to shown in Fig. 1 in the embodiment of the present invention
Film layer structure improves, and to reach to be replaced the function of polarizer layer by liquid crystal layer, reduces Flexible Displays
The purpose of the thickness of screen.
Embodiments provide a kind of light polarizing film layer, for being arranged on the light emission side of display floater.Fig. 2
It is the structural representation of light polarizing film layer according to embodiments of the present invention, as in figure 2 it is shown, this light polarizing film layer includes:
First oriented film 1, the second oriented film 2, Yi Jiwei being oppositely arranged with described first oriented film 1
Liquid crystal layer 3 between described first oriented film 1 and described second oriented film 2, described liquid crystal layer 3
In liquid crystal can pre-along the predetermined orientation direction of described first oriented film 1 and the second oriented film 2
Determine differently-oriented directivity arrangement.
In actual applications, when forming described first oriented film 1 and described second oriented film 2, can
To use organic polymer oriented material, such as polyimides (PAA), photoresists etc. are all feasible,
Owing to the thickness of these thin film is the thinnest, can be at the glass substrate coating PAA being provided previously by or photoresists
Deng material, then carry out curing process and can be formed.
As a preferred exemplary, this light polarizing film layer can also include: is arranged on described first oriented film 1
And the sealed plastic box 4 between described second oriented film 2, described sealed plastic box 4 is centered around described liquid crystal layer 3
Around and be positioned at described first oriented film 1 and the marginal area of described second oriented film 2.
In the structure of this light polarizing film layer, described sealed plastic box 4 serves the effect supporting total, in reality
In the application of border, after forming described first oriented film 1 and described second oriented film 2, can first distinguish
Described first oriented film 1 or described second oriented film 2 are coated with sealed plastic box agent, in irrigation LCD technology
After completing and forming described liquid crystal layer 3, by described first oriented film 1 or described second oriented film 2
Involutory hot pressing, sealed plastic box agent just can form described sealed plastic box 4.
Owing to described first oriented film 1, described second oriented film 2 and described sealed plastic box 4 are all adopted
Complete with coating process, its thickness the thinnest (typically between zero point several microns to several microns), and by
The thickness of the liquid crystal layer 3 that liquid crystal molecule is constituted is the thinnest, and the light polarizing film layer therefore ultimately formed is compared to existing
For some polaroids, clearly, this can finally reduce it and apply at flexible display screen the thin advantage of thickness
On bending radius, be greatly improved bending number of times and the life-span of flexible display screen.
In order to effectively reduce the thickness of described light polarizing film layer, a preferred implementation of the embodiment of the present invention
In, the thickness of described light polarizing film layer can be set smaller than equal to 50um.As for wherein each thin film
Thickness can be designed according to process requirements.
Certainly, if it is desired to reduce the thickness of described light polarizing film layer to the full extent, in the embodiment of the present invention, also
Further the thickness range of described light polarizing film layer can be set as 5um～8um.Under normal circumstances, by
The least in the thickness of liquid crystal, and oriented film (described first oriented film 1 and described second oriented film 2)
Thickness the least, therefore, be to be easy to for realizing thickness light polarizing film layer between 5um～8um
's.
Thickness between relatively conventional polaroid 100um～200um easily, the thickness of above-mentioned light polarizing film layer
The most thinning, it will be the most thinning for being applied the thickness of flexible display substrates after flexible display substrates, inevitable
The bending radius of flexible display substrates can be reduced, and easily realize collapsible.
On the basis of above-mentioned light polarizing film layer, present invention also offers a kind of display device, this display device bag
Include display floater, and the above-mentioned light polarizing film layer of described display floater light emission side can be arranged on.This display fills
Mainly being improved by of putting applies above-mentioned light polarizing film layer as its polarizing appliance, and the advantage of this display device is also
Emerged from by above-mentioned light polarizing film layer.
Due to above-mentioned light polarizing film layer by liquid crystal layer and lay respectively at described liquid crystal layer both sides first orientation thin
Film and the second orientation evil spirit ripple are constituted, when the above-mentioned light polarizing film layer of application is as the polarizing appliance of display device, and institute
Described first oriented film stating light polarizing film layer can be formed on the substrate of described display floater light emission side.
As a preferred exemplary, described display device can also include: touch panel, be arranged on described partially
The light emission side of light film layer.Further, described second oriented film of described light polarizing film layer can be formed at institute
State touch panel towards on the substrate of described light polarizing film layer side.
In embodiments of the present invention, described display floater can be preferably flexible display panels.But in reality
In application, in order to reach the effect of thinning display floater, above-mentioned light polarizing film layer can also be applied completely non-soft
On property display floater.
As a preferably implementation, above-mentioned display device can further include: is arranged on described
The cover sheet of touch panel the most described light polarizing film layer side, and it is positioned at described touch panel and described guarantor
Optical cement between protecting cover plate.
By optical cement, described cover sheet is arranged on described touch panel, can effectively protect described
The damage that touch panel causes from extraneous collision or friction during the use of user.
It can be seen that in above-mentioned display device, main use liquid crystal material replaces layer of polarizer and optical cement layer
Structure, make flexible display panels realize integral thickness thinning while, there is again the optical function of polarisation
Characteristic, such that it is able to realize that bent angle is less or folding display product.
Corresponding to above-mentioned display device, the embodiment of the present invention additionally provides the manufacture method of a kind of display device,
Described display device includes display floater and touch panel.Fig. 3 is display device according to embodiments of the present invention
Manufacture method flow chart, as it is shown on figure 3, this flow process comprises the following steps (step S302-step S306):
Step S302, on the substrate of described display floater light emission side formed there is the first predetermined orientation direction
The first oriented film；
Step S304, need towards forming tool on the substrate of described display floater side at described touch panel
There is second oriented film in the second predetermined orientation direction；
Step S306, between described first oriented film and described second oriented film formed liquid crystal layer and
Sealed plastic box, described sealed plastic box is centered around the surrounding of described liquid crystal layer and is positioned at described first oriented film and described
The marginal area of the second oriented film, the liquid crystal in described liquid crystal layer can be along described first predetermined orientation side
Arrange to described second predetermined orientation direction.
In embodiments of the present invention, the process forming described first oriented film may comprise steps of:
A1, on the substrate of described display base plate light emission side coat one layer of oriented material；
A2, to coating oriented material carry out cured, obtain one first oriented layer；
A3, according to described first predetermined orientation direction, described first oriented layer is carried out friction operation, then
It is carried out operation, is formed and there is described first oriented film.
In embodiments of the present invention, the process forming described second oriented film may comprise steps of:
B1, need towards coating one layer of orientation on the substrate of described display base plate side at described touch panel
Material；
B2, to coating oriented material carry out cured, obtain one second oriented layer；
B3, according to described second predetermined orientation direction, described second oriented layer is carried out friction operation, then
It is carried out operation, is formed and there is described second oriented film.
In embodiments of the present invention, the process forming described liquid crystal layer may comprise steps of:
C1, on described first oriented film dispenser method；
C2, at the edge coating sealing-in colloid of described second oriented film；
C3, according to described second oriented film towards the direction of described first oriented film, by described second
Oriented film is involutory on described first oriented film；
C4, described second oriented film and described first oriented film are carried out hot pressing, form described liquid crystal
Layer and described sealed plastic box.
Certainly, after having formed described touch panel, it is also possible at the most described display surface of described touch panel
Form optical cement on the substrate of plate side, then on described optical cement, form a cover sheet, to reach effective
The damage that described touch panel causes during the use of user is protected on ground from extraneous collision or friction
Effect.
For further appreciating that the manufacturing process of above-mentioned display device, refer to Fig. 4, Fig. 4 is according to the present invention
The manufacturing process step schematic diagram of the display device of embodiment, as shown in Figure 4, as display floater (Panel)
After completing encapsulation, respectively Panel and touch substrate are carried out surface clean, more respectively in Panel and touch
The surface-coated organic polymer oriented material of substrate (such as polyimides, or the oriented material such as photoresists),
At Panel, (the most above-mentioned first takes layer and second takes with the one layer of uniform oriented layer of surface-coated touching substrate
To layer), then region, the edge coating sealed plastic box body at Panel and touch substrate, then to two orientations
Layer and sealing colloid do cured, make oriented layer and sealed plastic box body solidify by high-temperature process.Then, use
The materials such as flannelette class rub the surface of two oriented layer in a certain direction, so that liquid crystal molecule in the future can be
Oriented layer surface arranges along the frictional direction of oriented layer, and orientation friction metacoxal plate surface can leave flannelette line etc.
Pollutant, take cleaning step to eliminate pollutant.Then, in laminating, Panel and touch substrate, carried out
Hot pressing and irrigation crystal, form structure of polarized light the most on a display panel and touch substrate, forming protection cap the most again
Plate touches substrate with protection.
The embodiment of the present invention, the physical optics characteristic of application liquid crystal, liquid crystal material is introduced flexible display knot
Structure, has the intermediate state of the some properties of crystal and liquid concurrently due to liquid crystal material, has ordered orientation and liquid
Mobility so that it is have polarity and bending lubricity, during therefore it can substitute for Flexible Displays structure
Layer of polarizer and OCA layer, while there is polarisation effect, by thinning for the integral thickness of flexible display,
To be substantially improved the flexural property of flexible display, and make bending radius reduce, number of bends improves.
The above is the preferred embodiment of the present invention, it is noted that for the ordinary skill people of this area
For Yuan, on the premise of without departing from principle of the present invention, it is also possible to make some improvements and modifications, this
Within a little improvements and modifications also should be considered to be encompassed in protection scope of the present invention.
Claims (15)
1. a light polarizing film layer, for being arranged on the light emission side of display floater, it is characterised in that including:
First oriented film, the second oriented film being oppositely arranged with described first oriented film, and be positioned at
Liquid crystal layer between described first oriented film and described second oriented film, the liquid crystal energy in described liquid crystal layer
Enough predetermined orientation directions along described first oriented film and the predetermined orientation side of described second oriented film
To arrangement.
Light polarizing film layer the most according to claim 1, it is characterised in that also include:
It is arranged on the sealed plastic box between described first oriented film and described second oriented film, described sealed plastic box
It is centered around the surrounding of described liquid crystal layer and is positioned at described first oriented film and the limit of described second oriented film
Edge region.
Light polarizing film layer the most according to claim 2, it is characterised in that the thickness of described light polarizing film layer
Less than or equal to 50um.
Light polarizing film layer the most according to claim 3, it is characterised in that the thickness of described light polarizing film layer
Scope is 5um～8um.
5. a display device, it is characterised in that include display floater, and be arranged on described display surface
The light polarizing film layer as according to any one of Claims 1-4 of plate light emission side.
Display device the most according to claim 5, it is characterised in that described light polarizing film layer described
First oriented film is formed on the substrate of described display floater light emission side.
Display device the most according to claim 6, it is characterised in that described display device also includes:
Touch panel, is arranged on the light emission side of described light polarizing film layer.
Display device the most according to claim 7, it is characterised in that described light polarizing film layer described
Second oriented film is formed at described touch panel towards on the substrate of described light polarizing film layer side.
9. according to the display device according to any one of claim 5 to 8, it is characterised in that described aobvious
Show that panel is flexible display panels.
10., according to the display device described in claim 7 or 8, also include:
It is arranged on the cover sheet of described touch panel the most described light polarizing film layer side, and is positioned at described touching
Touch the optical cement between panel and described cover sheet.
The manufacture method of 11. 1 kinds of display devices, described display device includes display floater and touch panel,
It is characterized in that, described method includes:
The substrate of described display floater light emission side is formed first orientation with the first predetermined orientation direction
Thin film；
Need formation on the substrate of described display floater side to have second at described touch panel to make a reservation for
Second oriented film of differently-oriented directivity；
Liquid crystal layer and sealed plastic box is formed between described first oriented film and described second oriented film, described
Sealed plastic box be centered around described liquid crystal layer surrounding and be positioned at described first oriented film and described second orientation thin
The marginal area of film, the liquid crystal in described liquid crystal layer can be along described first predetermined orientation direction and described
Two predetermined orientation direction arrangements.
12. methods according to claim 11, it is characterised in that form described first oriented film
Process include:
The substrate of described display base plate light emission side coats one layer of oriented material；
The oriented material of coating is carried out cured, obtains one first oriented layer；
According to described first predetermined orientation direction, described first oriented layer is carried out friction operation, then it is entered
Row cleaning operation, is formed and has described first oriented film.
13. methods according to claim 11, it is characterised in that form described second oriented film
Process include:
Need to coat one layer of oriented material on the substrate of described display base plate side at described touch panel；
The oriented material of coating is carried out cured, obtains one second oriented layer；
According to described second predetermined orientation direction, described second oriented layer is carried out friction operation, then it is entered
Row cleaning operation, is formed and has described second oriented film.
14. methods according to claim 11, it is characterised in that form the process of described liquid crystal layer
Including:
Dispenser method on described first oriented film；
Edge coating sealing-in colloid at described second oriented film；
According to described second oriented film towards the direction of described first oriented film, it is orientated thin by described second
Film is involutory on described first oriented film；
Described second oriented film and described first oriented film are carried out hot pressing, formed described liquid crystal layer and
Described sealed plastic box.
15. according to the method according to any one of claim 11 to 14, it is characterised in that also include:
The substrate of described touch panel the most described display floater side is formed optical cement；
Described optical cement is formed a cover sheet.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110261950A (en) * | 2019-05-23 | 2019-09-20 | 浙江怡诚光电科技有限公司 | A kind of flexibility OLED is shown with coating type polaroid |
| WO2019205031A1 (en) * | 2018-04-25 | 2019-10-31 | 深圳市柔宇科技有限公司 | Cover plate, display device, and method for manufacturing cover plate |
| WO2021189357A1 (en) * | 2020-03-26 | 2021-09-30 | 京东方科技集团股份有限公司 | Display device and preparation method therefor |
| CN114613269A (en) * | 2022-03-17 | 2022-06-10 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
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