CN105911618A - Foldable hard coating film and display device comprising thereof - Google Patents
Foldable hard coating film and display device comprising thereof Download PDFInfo
- Publication number
- CN105911618A CN105911618A CN201610103705.5A CN201610103705A CN105911618A CN 105911618 A CN105911618 A CN 105911618A CN 201610103705 A CN201610103705 A CN 201610103705A CN 105911618 A CN105911618 A CN 105911618A
- Authority
- CN
- China
- Prior art keywords
- folding
- hard coat
- coat film
- film
- methyl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/536—Hardness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
- Surface Treatment Of Optical Elements (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The present invention relates to a foldable hard coating film and a display device comprising thereof. Because the thickness of the bending part is reduced, the film is not easy to have crack at folding. The display screen can satisfy the hardening and folding features and can be taken as the substitute good of the display screen glass or a film with high hardness.
Description
Technical field
The present invention relates to carry out with can not producing crack folding, there is high rigidity and the folding hard coat film of scratch resistance and there is the display screen of this folding hard coat film.
Background technology
In the near future, it is contemplated that commercially it would appear that the portable equipment of the more advanced flexible folding of arc smart mobile phone than bending solid form.
This is the product of flexible display screen applying a level of having evolved than the arc-shaped display screen of current commercialization.For flexible display screen technology, look forward to its after the arc (curved) of the form being only capable of bending is evolved as bent bending (bendable) form, folding folding (foldable) form, final evolve as rollable (rollable) form that can crimp or scalable (stretchable) form that can freely increase and decrease size.
In the case of design of LED is folding form, it is capable of using as panel computer upon deployment, 1 product that utilizes used as smart mobile phone after folding realizes various sizes of display screen, additionally, in the case of this machine of the panel computer more in more large-scale than smart mobile phone or TV, if able to hand-held movement after Zhe Dieing, then convenience is significantly increased.
Folding display screen be can as books or notebook the display screen of folded in half, a lot of companies have proposed various relevant technology and patent to this.
In recent years, the SEL(Semiconductor of Japan
Energy Laboratory) and AFD(Advanced Film device), Nokia propose the OLED folding display screen that can fold two foldings or three foldings.
Additionally, Apple has applied for utilizing 3 cinctures display screen (U.S. patent Nos discloses No. 2013-0076612) formed at the AMOLED bent around, in recent years, the patent of the hollow transparent display screen that the oval hollow pipe (hollow state) including cylinder is barrel-shaped, section are triangle or tetragon etc. has also been applied for.
In addition, LG display company and Samsung Electronics it is also proposed that various (Korea S's patent of invention discloses No. 2014-0032773 with the morphogenetic display screen of polygon by curved edge or folding, No. 2014-0119585, U.S. patent Nos discloses No. 2015-0022436).
Usually as display screen, its most external has the outsourcing window of the glass material for protecting display screen.But owing to glass is not used to folding display screen, so substitute glass and use the high rigidity hard coat film with high rigidity and wear-resistant property.
Hardness in order to ensure glass grades, the thickness making the hard conating in hard coat film is needed to increase, but although the biggest case hardness of its thickness is the highest, but microgroove or curling (curl) become big due to the cure shrinkage of hard conating, and on hard conating, easily produce crack (or be full of cracks) or peel off, so it is difficult to reality application.
As an example, in open No. 2008-0055698 of Korea S's patent of invention, enumerated be made up of multilamellar firmly apply blooming, and mention that hardness can increase, but do not relate to the countermeasure for crack.
Especially, in the case of high rigidity hard coat film is applied to folding display screen, the inside region after folding is shunk due to compression, and outside is extended by tension force, its result, produces more serious crack in fold domain.
Its result, it is thus proposed that there is the fabrication scheme of the hard coat film of flexibility.In Korea S's patent of invention discloses No. 2014-0104175, it is proposed that the oligosiloxane containing alicyclic epoxy base is polymerized and manufactures the content of flexible hard coat film.This thin film by assuring that a certain degree of flexibility and can be applied in arc-shaped display screen etc., but its flexible degree is not enough to be applied to folding display screen.
Therefore, in Korea S's patent of invention discloses No. 2014-0033546, disclose a kind of outsourcing window material, it has different hardness to make fold domain and non-collapsible region, by PMMA(Polymethyl Methacrylate in non-collapsible region) ratio more than PnBA(Poly Butyl Acrylate) ratio in the way of contain PMMA and PnBA, it addition, contain PMMA and PnBA in the way of the ratio of PnBA is more than PMMA in fold domain.
In the method, although can prevent from fold domain produces crack to a certain extent, but owing to the material in fold domain and non-collapsible region is different from each other, this problem in a large amount of man-hour can be spent so producing when manufacturing.
Patent documentation 1: Korea S's patent of invention discloses No. 2014-0033546.
Summary of the invention
The applicant uses common hard coating composition through studying from many aspects and manufactures the folding hard coat film of high rigidity with simple operation, if confirming the hard coat layer thickness of fold domain is controlled, then can easily fold, and need not make the material in fold domain and non-collapsible region change and just can manufacture, obtained thin film has hardness and the scratch resistance of high level, and also confirm in the strictest crooked test and not produce crack, thus obtain the present invention.
Thus, it is an object of the invention to, it is provided that a kind of folding hard coat film being used as high rigidity hard coat film.
It addition, another object of the present invention is to provide the purposes that described folding hard coat film is applied to display screen.
In order to realize described purpose, the present invention provides a kind of folding hard coat film being formed on base film layer and having the hard conating that can carry out folding part and the non-collapsible portion folded on the basis of fold line.
Now, it is characterised in that described fold line is formed as linearity along the horizontal or vertical direction folding hard coat film, and this fold line is formed with 1 or many.
Additionally, it is characterised in that the folding part of hard conating has the thickness ratio of less than 70% compared with the vertical thickness in non-collapsible portion.
Additionally, it is characterised in that connect via mild slope between described folding part and non-collapsible portion.
It is characterized in that, this folding hard coat film is the high rigidity hard coat film of the pencil hardness with more than 5H, it is adaptable to folding display screen.
The effect of invention
Owing to hard coat film involved in the present invention is the folding hard coat film of high rigidity, when thin film being folded by reducing the thickness of folded portion, crack will not be produced, so when being applied to folding display screen, it is possible to meet high rigidity, scratch resistance and folding characteristic simultaneously.
Accompanying drawing explanation
Fig. 1 is the profile folding hard coat film involved by a specific embodiment of the present invention.
Fig. 2 is the axonometric chart folding hard coat film involved by a specific embodiment of the present invention.
Fig. 3 is the profile of the hard conating involved by a specific embodiment of the present invention.
Fig. 4 is to represent the hard coat film that folds involved by the present invention specific embodiment is carried out the axonometric chart of the state folded.
The explanation of label
1: base film layer
3: hard conating
3a: folding part
3b: non-collapsible portion
10: fold hard coat film.
Detailed description of the invention
Hereinafter, referring to the drawings, the present invention is described in detail.
Fig. 1 is the profile folding hard coat film involved by a specific embodiment of the present invention, and Fig. 2 is its axonometric chart.
With reference to Fig. 1 and Fig. 2, hard coat film 10 includes base film layer 1 and the hard conating 3 formed on this base film layer 1.
Hard conating 3 is by by order to fold that (bend or fold) folds hard coat film 10 and folding folding part 3a and non-collapsible portion 3b on the basis of fold line is constituted.
Now, the line A, this line A that can be folded by folding part 3a is formed as in figure 2 it is shown, be upwardly formed linearity at the Vertical Square folding hard coat film 10.Additionally, this line A is in addition to vertical direction, it is also possible to formed in the horizontal direction, hard conating 3 at least forms more than 1, alternatively, it is also possible to form many as desired.As an example, can be folded once by the folding part 3a that line A vertically is formed as shown in Figure 2, in the case of forming many, fold hard coat film 10 and can be folded into the polyhedron of variform.
Folding part 3a can arrange 1 in the position of middle folding hard coat film 10 as shown in Figure 2, additionally can also arrange multiple in multiple positions.As an example, in the case of there are 2 folding part 3a, fold hard coat film 10 and folding part 3a can be set in the position being divided into 3 parts.Quantity and the position of these folding parts 3a are not defined by the present invention, suitably can change, as long as there is not problem when actually used according to the application folding hard coat film 10.
Especially, folding hard coat film 10 involved in the present invention is folding film, is can to carry out, along the line that described folding part 3a is formed, the thin film that folds.In the case of existing hard coat film, crack can be produced when repeatedly folding, but in the present invention, different by folding part 3a and non-described folding part 3b is set to thickness, manufacture in the way of there is different-thickness such that it is able to fundamentally solve described problem.
In other words, as shown in Figures 1 and 2, in the present invention, need folding part 3a is formed as have relatively thin thickness relative to non-collapsible portion 3b, the preferably folding part 3a vertical thickness relative to non-collapsible portion 3b has the thickness ratio of less than 70%, more preferably has the thickness ratio of less than 50%.It can illustrate with following formula 1.
[formula 1]
(in described formula, Ta represents the average thickness of folding part, and Tb represents the average thickness in non-collapsible portion.)
Ta/Tb is the smaller the better, when making, in order to realize the function of hard conating 3, the situation that the thickness of non-collapsible portion 3b meets more than certain level, and the numerical value of folding part 3a thickness the lowest, i.e. folding part 3a the more Bao Yuehao based on described thickness ratio.Even if additionally, it is not just to realize the purpose of the present invention that thickness ratio exceedes described scope yet, but likely produce crack, it is therefore preferable that suitably regulate in the range of described when folding.
More specifically, when the usual thickness of hard conating 3 is in the range of 10～200 μm, the thickness of non-collapsible portion 3b can be in the range of 10～200 μm, and the thickness of folding part 3a can be in the range of 0.05～140 μm.
Especially, adjusting even if carrying out above-mentioned local thickness, folding part 3a and non-collapsible portion 3b not only has and identical firmly applies characteristic, also keeps identical surface scratch resistance.
Additionally, the folding part 3a of described hard conating 3 and non-collapsible portion 3b is when being applied to display screen etc., the line that preferably folding part 3a is formed cannot be seen, and is connected via mild slope by folding part 3a and non-collapsible portion 3b to carry out flexible bending.
Its result, as shown in Figure 4, when folding folding hard coat film 10, it is possible to is minimized by the stress that described folding part 3a is applied on non-collapsible portion 3b.
The involved in the present invention hard coat film 10 that folds is the high rigidity hard coat film that pencil hardness is more than 5H or more than 7H or more than 9H under 500g loads.This folding hard coat film 10 has and occurs the scratch resistance of less than 10 by frictional testing machine with scratch when loading reciprocal 10 times of 1kg.Additionally, light transmittance can be more than 87.0% or more than 90.0%, mist degree can be less than 2.0% or less than 1.0%, it is also possible to is less than 0.5%.
Especially, utilize the structure formed by folding part 3a and non-collapsible portion 3b, under bending test (utilizing 5mm mandrel to carry out 200,000 crooked tests) carried out under conditions of the strictest, the most do not produce crack.
As illustrated as the former, fold hard coat film 10 and contain base film layer 1 and hard conating 3, as long as its material, thickness etc. disclosure satisfy that the condition as described high rigidity hard coat film, be not particularly limited.
As long as the base film layer 1 common transparent base layer film of the present invention, its kind does not limit, and is not particularly limited in the present invention.
nullSpecifically，Material as described transparent base layer film，It can be the cycloolefin analog derivative from norborene or multi-ring Norbornene derivative etc. with the monomeric unit containing cycloolefin、Diacetyl cellulose、Tri acetyl cellulose、Acetylcellulose butanoic acid、Isobutyl ester cellulose、Propionyl cellulose、The cellulose selected in bytyry cellulose or levulinic Atriacetyl cellulose etc.，From ethylene-vinyl acetate copolymer、Polyester、Polystyrene、Polyamide、Polyimide、Polyacrylate、Polyimides、Polyether sulfone、Polysulfones、Polyethylene、Polypropylene、Polymethylpentene、Polrvinyl chloride、Vingon、Polyvinyl alcohol、Pioloform, polyvinyl acetal、Polyether-ketone、Polyether-ether-ketone、Polyether sulfone、Polymethyl methacrylate、Polyethylene terephthalate、Polybutylene terephthalate、PEN、Merlon、Polyurethane、The material selected in epoxy resin，Can also use and not extend、Uniaxial extension or double shaft extensioning film.Wherein, the transparency and the Kapton of excellent heat resistance, uniaxially or biaxially extension polyester film or the transparency and excellent heat resistance are preferably used and cope with the cycloolefin analog derivative thin film of thin film maximization, there is high transparent and there is not optically anisotropic triacetyl cellulose film.
The thickness of above-mentioned base film layer 1 is not particularly limited, and can be 8～1000 μm, the scope of preferably 20～150 μm.If additionally, its thickness is less than described scope, the thinnest film strength reduces thus processability deterioration, and in contrast, if it exceeds described scope, then the transparency reduces, and additionally when being applied to display screen from now on, thickness increases, it is impossible to realize film type.
Hard conating 3 is manufactured by solidification after hard conating formation compositions being coated.Now, hard conating formation compositions is in addition to translucent resin, light trigger and solvent, possibly together with additive.
Described translucent resin is light-cured type (methyl) acrylate oligomer.
Described light-cured type (methyl) acrylate oligomer can use more than a kind selected from the group that epoxy (methyl) acrylate, polyurethane (methyl) acrylate and polyester (methyl) acrylate are constituted, specifically, polyurethane (methyl) acrylate and polyester (methyl) crylic acid ester mixture can be used, it is also possible to 2 kinds of polyester (methyl) crylic acid ester mixture are used.
Intramolecular can be had multifunctional (methyl) acrylate of hydroxyl and react under conditions of there is catalyst with the compound with NCO and manufacture by described polyurethane (methyl) acrylate by means commonly known in the art.
The object lesson of multifunctional (methyl) acrylate that intramolecular has hydroxyl can be from 2-ethoxy (methyl) acrylate, 2-hydroxyl isopropyl (methyl) acrylate, 4-hydroxyl butyl (methyl) acrylate, more than a kind selected in the group that caprolactone open loop hydroxy acrylate, tetramethylolmethane three/tetra-(methyl) acrylate mixture and dipentaerythritol five/six (methyl) acrylate mixture are constituted.
nullAdditionally，The object lesson of the compound with NCO can be from 1,4-diisocyanate butane、1,6-diisocyanate hexane、1,8-diisocyanate octane、1,12-diisocyanate dodecane、1,5-diisocyanate base-2-methylpentane、Trimethyl-1,6-diisocyanate hexane、1,3-bis-(isocyanatomethyl) hexamethylene、Anti-form-1,4-cyclohexene diisocyanate、4,4'-methylene two (cyclohexyl isocyanate)、Isophorone diisocyanate、Toluene-2,4-diisocyanate,4-diisocyanate、Toluene-2,4-diisocyanate,6-diisocyanate、Dimethylbenzene-1,4-diisocyanate、Tetramethyl xylene-1,3-diisocyanate、1-chloromethyl-2,4-diisocyanate、4,4'-methylene two (2,6-dimethyl benzene isocyanates)、4,4'-oxygen is double (carbanil)、Trifunctional isocyanates derivative in hexamethylene diisocyanate、And more than a kind selected in the group of leucoaurin propanol adduction toluene diisocynate composition.
Polyester (methyl) acrylate can make polyester polyol and acrylic acid react and manufacture by means commonly known in the art.
Described polyester (methyl) acrylate such as can be from polyester acrylate, polyester diacrylate, polyester tetra acrylate, polyester hexaacrylate, polyester pentaerythritol triacrylate, polyester tetramethylol methane tetraacrylate, and more than a kind selected in the group of polyester tetramethylolmethane six acrylate composition, but it is not necessarily limited to this.
Hard conating formation compositions involved in the present invention can also contain light-cured type monomer.
Described light-cured type monomer can use monomer have the unsaturated groups such as (methyl) acryloyl group, vinyl, styryl, pi-allyl in intramolecular as normally used light-cured type functional group, that use in this technical field; there is no particular restriction, specifically can use the monomer with (methyl) acryloyl group.
nullThe described monomer with (methyl) acryloyl group can be such as from neopentyl glycol acrylate、1,6-hexane diol (methyl) acrylate、Propylene glycol two (methyl) acrylate、Trietbhlene glycol two (methyl) acrylate、Dipropylene glycol two (methyl) acrylate、Polyethylene glycol two (methyl) acrylate、Glycol polypropylene two (methyl) acrylate、Trimethylolpropane tris (methyl) acrylate、Trimethylolethane trimethacrylate (methyl) acrylate、1,2,4-hexamethylene four (methyl) acrylate、Five glycerol three (methyl) acrylate、Tetramethylolmethane four (methyl) acrylate、Tetramethylolmethane three (methyl) acrylate、Dipentaerythritol three (methyl) acrylate、Dipentaerythritol five (methyl) acrylate、Dipentaerythritol four (methyl) acrylate、Dipentaerythritol six (methyl) acrylate、Tripentaerythritol three (methyl) acrylate、Tripentaerythritol six (methyl) acrylate、Two (2-ethoxy) isocyanuric acid ester two (methyl) acrylate、Ethoxy (methyl) acrylate、Hydroxypropyl (methyl) acrylate、Hydroxyl butyl (methyl) acrylate、Iso-octyl (methyl) acrylate、Isodecyl (methyl) acrylate、Stearyl (methyl) acrylate、Oxolane (methyl) acrylate、Phenoxyethyl (methyl) acrylate、And more than a kind selected in the group of isoborneol (methyl) acrylate composition，But it is not limited to this.
Especially, substitute in content range by (methyl) acrylate contained in combining at described four functional polyesters (methyl) acrylate and mixture and use light-cured type monomer, it is thus possible to improve workability and the intermiscibility of photocuring coating composition, and the characteristic of identical level can be obtained.
The aforementioned light-cured type as translucent resin (methyl) acrylate oligomer, monomer can also individually use or combine two or more use.
The quality of film is had an impact by above-mentioned translucent resin, is being preferably 1～80 weight % relative to hard conating formation compositions 100 weight %, uses in the range of more preferably 5～50 weight %.In addition, if its content is less than described scope, even if being then difficult to form film or form the hard conating being also difficult to manufacture the hardness with abundant level, additionally, if its content exceedes described scope, after then producing manufacture hard conating, the contraction after curing of coating causes bending to become this problem difficult, it is therefore preferable that suitably regulate in the range of described.
As long as described light trigger uses light trigger in this technical field, it is not specially limited.Specifically, it is possible to use more than a kind selected from the group that hydroxyl ketone, aminoketones and hydrogen-capture-type light initiator are constituted.
Such as, as described light trigger can use from 2-methyl isophthalic acid-［ 4-(methyl mercapto) phenyl ］ 2-morpholine acetone-1, benzophenone, benzyl dimethyl ketal, 2-hydroxy-2-methyl-1-phenyl-1-ketone, 4-hydroxyl ring phenyl ketone, 2,2-dimethoxy-2-phenyl-acetophenone, anthraquinone, fluorenes, triphenylamine, carbazole, 3-methyl acetophenone, 4-chloro-acetophenone, 4,4-dimethoxy-acetophenone, 4,4-diaminobenzophenone, 1-hydroxycyclohexyl phenyl ketone, benzophenone, and diphenyl (2,4,6-trimethylbenzoyl) phosphine oxide constitute group in select more than a kind.
Above-mentioned light trigger is being preferably 0.1～10 weight portions relative to hard conating formation compositions 100 weight portion, more preferably uses in the range of 1～5 weight %.Additionally, if its content is less than described scope, then the curing rate of compositions is slack-off, occurs uncured and causes mechanical properties to deteriorate, in contrast, if it exceeds described scope, it is likely that cause producing on film crack due to over-curing.
As long as the described solvent solvent for coating formation compositions known in the art, it is not specially limited.
Spendable flux can be from alcohols (methanol, ethanol, isopropanol, butanol, methyl cellosolve, ethyl cellosolve etc.), ketone (methyl ethyl ketone, methyl butyl ketone, methyl iso-butyl ketone (MIBK), metacetone, dipropyl ketone, Ketohexamethylene etc.), acetic acid system (ethyl acetate, propyl acetate, n-butyl acetate, tert-butyl acetate, methyl cellosolve acetate, acetic acid ethylene glycol monoethyl ether, propylene glycol monomethyl ether acetate, dihydroxypropane single-ether acetate, propylene glycol propyl ether acetate, 2-Methoxyacetic acid butyl ester, 2-Methoxyacetic acid pentyl ester etc.), hexane class (hexane, heptane, octane etc.), benzene class (benzene, toluene, dimethylbenzene etc.), ethers (diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether, dibutyl ethylene glycol ether, propylene glycol monomethyl ether etc.) etc. in select suitable application.The solvent of described illustration can individually use or be combined two or more using.
Described solvent preferably with respect to hard conating formation compositions 100 weight % with in the range of 10～95 weight % use.If the content of described solvent is less than described content, then viscosity uprises and workability is reduced, on the contrary, if it exceeds described scope, then exist in drying process and need more time and economy to be deteriorated this problem, thus it is preferred to suitably use in the range of described.
Additionally, hard conating formation compositions can also be on the basis of described composition, possibly together with the most normally used composition, such as antireflection agent, filler, antioxidant, UV absorbent, light stabilizer, forbid thermic macromolecule agent, levelling agent, surfactant, antioxidant, lubricant, anti-fouling agent etc..
As an example, in an embodiment of the present invention, use Nano silica sol as filler, use, as levelling agent, the product that " BYK ケ ミ " company produces, now, as long as the selection of each additive and content control suitably to be selected by the personnel with this area Professional knowledge.
Folding hard coat film involved by an embodiment of the invention manufactured through following several stages,
S1) on base film layer, apply the stage of hard conating formation compositions, now, so that the folding part of the hard conating mode different with non-collapsible portion thickness each other is coated,
S2) stage of formed dried coating film is made, and
S3) curing of coating being dried is made and the stage forming hard conating.
Hereinafter each stage is described in detail.
First, at S1) in, base film layer applies hard conating formation compositions.
Described coating can be carried out with common coating method, as an example, it is possible to use die coating is applied, air knife, reverse roll, injection, scraper, casting painting, gravure, nick coating or the proper method such as spin coating are coated operation (Coating
Process).
Coating needs the thickness of the hard conating after considering final curing.Now, working procedure of coating is controlled, so that the hard conating of the present invention is made up of the folding part each other with different-thickness and non-collapsible portion, connects via mild slope between them.
As an example, in an embodiment of the present invention, it is divided into two regions, non-collapsible portion and a folding regions, it is coated through these 3 stages of coating in coating → region, non-collapsible portion of coating → folding regions in region, non-collapsible portion, so that the thickness in folding part and non-collapsible portion mode different from each other is coated.
It addition, as other example, it is possible to use that can be coated with different-thickness, there is the device of the variable nozzle of spray volume.That is, carry out concentrating coating by control to predetermined region, non-collapsible portion and the amount of the coating composition of folding regions coating, thus form the different folding part of thickness and non-collapsible portion.
Described fold line can be formed as 1 or many, in order to form many fold lines, and can be by the applied thickness of the compositions in this stage be the most repeatedly adjusted with folding part and non-collapsible portion and is formed.
Then, described S1 is made) the middle dried coating film applied.
It is dried and is not particularly limited in the present invention, can be carried out by common drying process.Preferably it is dried 10 seconds～2 hours with the temperature of 30～150 DEG C, more preferably 30 seconds～1 hour, makes volatile matter evaporation be dried.It is dried by above-mentioned, makes folding part and non-collapsible portion connect via mild slope each other.
Then, by by described S2) in dried film carry out being solidified to form hard conating, thus complete to fold the manufacture of hard coat film.
In curing process, photocuring or heat cure can be carried out, preferably carry out UV photocuring operation.Irradiation dose for the UV light of solidification is preferably from about the scope of 0.01～10J/cm2, more preferably 0.1～the scope of 2J/cm2.
The hard conating manufactured through the above-mentioned stage has the thickness of 10～200 μm at non-collapsible portion.Additionally, in the case of its thickness is less than aforementioned range, the hardness that may cause hard conating is not enough, in the case of being thicker than described scope, then may likely produce crack when processing, it is therefore preferable that suitably regulate in the range of described.
Including above-mentioned hard conating folding hard coat film as illustrated as the former, crack will not be produced, it is possible to be applied to the folding display screen received much concern in recent years when thin film being folded by reducing the thickness of folded portion.
Such as, the involved in the present invention hard coat film that folds can be used in substituting the display screens such as LCD, OLED, LED, FED or utilizing the cover glass of the touch screen of various mobile communication terminals, smart mobile phone and panel computer of these display screens, e-book etc., or is used as functional layer.
Below; for the ease of understanding that the present invention has enumerated suitable embodiment; but following embodiment is only used for illustrating the present invention; to those skilled in the art it is of course possible to carry out various change and amendment in the range of scope of the invention and technological thought, above-mentioned deformation and amendment are all certainly included in the range of claims are claimed.It addition, " % " and " portion " of following presentation content is quality criteria in the case of being not specifically stated.
Manufacture example 1: the manufacture of high rigidity hard conating formation compositions
(10 officials can will to use 10 weight portion portion urethane acrylates, MIWON SPECIALTY CHEMICAL company produces, SC2153), 10 weight portion pentaerythritol triacrylates and average sense radix be 6.5 officials can organic crylic acid ester and the Nano silica sol (12nm of 50 weight portions, amount of solid 40%), 20 weight portion methyl ethyl ketones, 7 parts by weight of propylene glycol monomethyl ether, (" BASF ジ ャ パ Application " company produces 2.5 weight portion light triggers, I-184), (" BYK ケ ミ " company produces 0.5 weight portion levelling agent, BYK3570) it is in harmonious proportion in blender, the defecator utilizing PP material carries out filtering and manufacturing high rigidity hard conating formation compositions.
Embodiment 1: fold the manufacture of hard coat film
Select triacetyl cellulose film (80 μm) as base film layer, be divided into 3 regions.
First, in zone 1, the high rigidity hard conating formation compositions produced according to described manufacture example 1 is applied 5cm in the one side of triacetyl cellulose film (80 μm) in the way of coating layer thickness is 20 μm in the width direction.Now, the thickness after the thickness of coating refers to final curing.
Then, in region 2, in the way of making applied thickness consecutive variations become 5 μm, apply 2cm in the width direction.
Then, in area 3, in the way of coating layer thickness is 20 μm, applies 5cm in the width direction, thus carries out the coating of summation 12cm length.
Then, after being dried 1 minute with 100 DEG C, irradiate the UV of 500mJ/cm2 and solidify, thus produce the high rigidity folding hard coat film with different surfaces thickness.
Embodiment 2: fold the manufacture of hard coat film
Carry out identical process with described embodiment 1, but change the thickness of hard conating and manufacture high rigidity and fold hard coat film.
By according to manufacturing the hard conating formation compositions that manufactures of example 1 in the one side of triacetyl cellulose film (80 μm) so that the mode that coating layer thickness becomes 20 μm applies 5.5cm.
Then, in the way of making applied thickness consecutive variations become 3 μm, 1cm is applied.
Then, in the way of coating layer thickness is 20 μm, applies 5.5cm, thus implements the coating of summation 12cm length, afterwards, implement the dry and solidification of proposition in embodiment 1 and manufacture high rigidity and fold hard coat film.
Comparative example 1: the manufacture of hard coat film
By the hard coating liquid of high rigidity of described manufacture example 1 so that coating layer thickness becomes after the mode of 20 μm applies comprehensively in the one side of triacetyl cellulose film (80 μm), carry out process same as in Example 1 and manufacture high rigidity hard coat film.
Experimental example 1: the physical property measurement of hard coat film and analysis
After the physical property of the hard coat film produced according to described embodiment and comparative example is proceeded as described below mensuration, result is shown in following table 1.
(1) pencil hardness: after pencil being set along 45 degree of directions under load 500g, so that applicator surface is towards the mode of pencil side, after film is fixed on glass, uses the pencil with various pencil hardness to carry out 5 times and evaluate, the hardness that more than 4 times are formed without scar is expressed as pencil hardness.
(2) marresistance: after utilizing binding agent to be fixed on glass by film, after in applicator surface, the steel wool (#0000) of usable floor area 2cm × 2cm is to load reciprocal 10 times of 1kg, it is judged that surface is with or without scratch.
1: scratch less than 10
2: scratch less than 20
3: scratch less than 30
4: scratch is more than 30
(3) crooked test
On the rod with specified diameter, the bending part of the thin film prepared with each embodiment and comparative example aligns and after mode with applicator surface as inner side places, repeats to implement the action that will launch again after thin film half-and-half bending for 200,000 times.With the naked eye confirm that the bending part of the thin film after bending is with or without producing crack.
[table 1]
With reference to described table 1, the hard coat film of embodiment and comparative example is excellent in terms of pencil hardness and marresistance, it is known that for high rigidity hard coat film.
But, if it is confirmed that the result of crooked test, then understand in the case of there is the hard coat film of embodiment 1 and 2 of folding part, do not produce crack, but create crack in the case of the hard coat film of comparative example 1.
Industrial applicibility
Folding hard coat film involved in the present invention is made up of the hard coating combination of high rigidity, and the glass that can substitute the various devices such as folding display screen uses, or uses as various functional layer.
Claims (8)
1. one kind folds hard coat film, it is characterised in that
Base film layer is formed there is folding part and the hard conating in non-collapsible portion that can carry out folding on the basis of fold line.
Folding hard coat film the most according to claim 1, it is characterised in that
Described fold line is formed as linearity along the horizontal or vertical direction of hard coat film.
Folding hard coat film the most according to claim 1, it is characterised in that
Described fold line forms 1 or many.
Folding hard coat film the most according to claim 1, it is characterised in that
The thickness in described folding part and non-collapsible portion have meet following formula 1 thickness ratio:
[formula 1]
(in described formula, Ta represents the average thickness of folding part, and Tb represents the average thickness in non-collapsible portion).
Folding hard coat film the most according to claim 1, it is characterised in that
Connect via mild slope between described folding part and non-collapsible portion.
Folding hard coat film the most according to claim 1, it is characterised in that
Described hard coat film is the high rigidity hard coat film of the pencil hardness with more than 5H.
Folding hard coat film the most according to claim 1, it is characterised in that
Described hard coat film is to utilize 5mm mandrel to carry out 200,000 crooked tests not produce the film in crack.
8. a display screen, it has the folding hard coat film according to any one of claim 1～7.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150026329A KR20160103681A (en) | 2015-02-25 | 2015-02-25 | Foldable hard coating film and display device comprising thereof |
| KR10-2015-0026329 | 2015-02-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105911618A true CN105911618A (en) | 2016-08-31 |
| CN105911618B CN105911618B (en) | 2020-01-07 |
Family
ID=56745072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610103705.5A Active CN105911618B (en) | 2015-02-25 | 2016-02-25 | Folded hard coating film and display screen having the same |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2016157110A (en) |
| KR (1) | KR20160103681A (en) |
| CN (1) | CN105911618B (en) |
| TW (1) | TW201637833A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107976830A (en) * | 2016-10-21 | 2018-05-01 | 三星电子株式会社 | Plastic base and the display device for including it |
| CN108573657A (en) * | 2017-03-14 | 2018-09-25 | 昆山工研院新型平板显示技术中心有限公司 | Folding display screen |
| CN109143422A (en) * | 2017-06-19 | 2019-01-04 | 郡是株式会社 | Cover film |
| CN111357041A (en) * | 2017-11-30 | 2020-06-30 | 株式会社半导体能源研究所 | Display panel, display device, input/output device, and data processing device |
| CN111478993A (en) * | 2020-04-02 | 2020-07-31 | Oppo广东移动通信有限公司 | Protective film for electronic device, and method for manufacturing protective film |
| CN111775532A (en) * | 2019-04-04 | 2020-10-16 | Oppo广东移动通信有限公司 | Display screen protection film and electronic equipment |
| WO2021031359A1 (en) * | 2019-08-19 | 2021-02-25 | 武汉华星光电半导体显示技术有限公司 | Polymer film, preparation method therefor and flexible folding panel |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102496467B1 (en) * | 2016-11-23 | 2023-02-06 | 엘지디스플레이 주식회사 | Flexible display device |
| US11217766B2 (en) | 2016-12-16 | 2022-01-04 | Lg Innotek Co., Ltd. | Display cover substrate and display device including same |
| JP6944785B2 (en) | 2017-02-03 | 2021-10-06 | 東京応化工業株式会社 | Laminates, flexible devices and methods for manufacturing laminates |
| WO2018150940A1 (en) * | 2017-02-20 | 2018-08-23 | 東洋紡株式会社 | Polyester film and applications thereof |
| KR102612459B1 (en) | 2017-10-27 | 2023-12-08 | 어플라이드 머티어리얼스, 인코포레이티드 | Flexible cover lens membranes |
| CN111448264B (en) | 2017-12-08 | 2022-02-25 | 3M创新有限公司 | Flexible hard coating |
| US11661536B2 (en) | 2018-02-28 | 2023-05-30 | 3M Innovative Properties Company | Adhesives comprising polymerized units of secondary hexyl (meth)acrylates |
| JP2019191330A (en) * | 2018-04-24 | 2019-10-31 | 東洋紡株式会社 | Foldable display surface protective film |
| JP2021523413A (en) | 2018-05-10 | 2021-09-02 | アプライド マテリアルズ インコーポレイテッドＡｐｐｌｉｅｄ Ｍａｔｅｒｉａｌｓ，Ｉｎｃｏｒｐｏｒａｔｅｄ | Interchangeable cover lens for flexible display |
| JP2021536030A (en) | 2018-08-14 | 2021-12-23 | アプライド マテリアルズ インコーポレイテッドApplied Materials, Incorporated | Multi-layer wet and dry hard coat for flexible cover lenses |
| KR102316432B1 (en) | 2018-10-26 | 2021-10-21 | 주식회사 엘지화학 | Cover window for flexible display device and flexible display device |
| KR102668705B1 (en) | 2019-03-21 | 2024-05-23 | 삼성디스플레이 주식회사 | Display device and method of fabricating the same |
| US11827802B2 (en) | 2019-05-09 | 2023-11-28 | 3M Innovative Properties Company | Flexible hardcoat |
| WO2020225701A1 (en) | 2019-05-09 | 2020-11-12 | 3M Innovative Properties Company | Flexible hardcoat |
| CN113874445A (en) | 2019-05-09 | 2021-12-31 | 3M创新有限公司 | Flexible hard coating |
| JP7480581B2 (en) | 2019-05-28 | 2024-05-10 | 東洋紡株式会社 | Polyester film and its uses |
| EP3990954A4 (en) | 2019-06-26 | 2023-08-02 | Applied Materials, Inc. | Flexible multi-layered cover lens stacks for foldable displays |
| KR102147299B1 (en) * | 2019-09-30 | 2020-08-24 | 에스케이이노베이션 주식회사 | Window cover film and flexible display panel including the same |
| KR102147349B1 (en) | 2019-09-30 | 2020-08-25 | 에스케이이노베이션 주식회사 | Window cover film and flexible display panel including the same |
| KR20210150199A (en) | 2020-06-03 | 2021-12-10 | 동우 화인켐 주식회사 | Primer Composition and Hard Coating Film Using the Same |
| KR20210150198A (en) | 2020-06-03 | 2021-12-10 | 동우 화인켐 주식회사 | Primer Composition and Hard Coating Film Using the Same |
| KR102611343B1 (en) | 2021-09-02 | 2023-12-07 | (주)에스티아이 | Ultra thin glass |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5658819A (en) * | 1979-10-18 | 1981-05-22 | Asahi Glass Co Ltd | Molding method of resin plate having hard coating |
| CN103578356A (en) * | 2012-07-26 | 2014-02-12 | 三星显示有限公司 | Foldable display device |
| US20150049428A1 (en) * | 2013-08-19 | 2015-02-19 | Samsung Display Co., Ltd. | Foldable display device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101910111B1 (en) | 2012-08-28 | 2018-10-22 | 삼성디스플레이 주식회사 | Foldable display device |
-
2015
- 2015-02-25 KR KR1020150026329A patent/KR20160103681A/en unknown
-
2016
- 2016-02-16 JP JP2016026940A patent/JP2016157110A/en active Pending
- 2016-02-19 TW TW105104922A patent/TW201637833A/en unknown
- 2016-02-25 CN CN201610103705.5A patent/CN105911618B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5658819A (en) * | 1979-10-18 | 1981-05-22 | Asahi Glass Co Ltd | Molding method of resin plate having hard coating |
| CN103578356A (en) * | 2012-07-26 | 2014-02-12 | 三星显示有限公司 | Foldable display device |
| US20150049428A1 (en) * | 2013-08-19 | 2015-02-19 | Samsung Display Co., Ltd. | Foldable display device |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107976830B (en) * | 2016-10-21 | 2022-05-24 | 三星电子株式会社 | Plastic substrate and display device including the same |
| CN107976830A (en) * | 2016-10-21 | 2018-05-01 | 三星电子株式会社 | Plastic base and the display device for including it |
| CN108573657A (en) * | 2017-03-14 | 2018-09-25 | 昆山工研院新型平板显示技术中心有限公司 | Folding display screen |
| CN109143422A (en) * | 2017-06-19 | 2019-01-04 | 郡是株式会社 | Cover film |
| CN111357041A (en) * | 2017-11-30 | 2020-06-30 | 株式会社半导体能源研究所 | Display panel, display device, input/output device, and data processing device |
| US11309523B2 (en) | 2017-11-30 | 2022-04-19 | Semiconductor Energy Laboratory Co., Ltd. | Flexible display panel and display device |
| US11758759B2 (en) | 2017-11-30 | 2023-09-12 | Semiconductor Energy Laboratory Co., Ltd. | Display panel |
| CN111775532A (en) * | 2019-04-04 | 2020-10-16 | Oppo广东移动通信有限公司 | Display screen protection film and electronic equipment |
| CN111775532B (en) * | 2019-04-04 | 2022-11-01 | Oppo广东移动通信有限公司 | Display screen protection film and electronic equipment |
| WO2021031359A1 (en) * | 2019-08-19 | 2021-02-25 | 武汉华星光电半导体显示技术有限公司 | Polymer film, preparation method therefor and flexible folding panel |
| US11479632B2 (en) | 2019-08-19 | 2022-10-25 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Polymer film, method of preparing the same, and flexible folding panel |
| CN111478993B (en) * | 2020-04-02 | 2021-10-01 | Oppo广东移动通信有限公司 | Protective film for electronic device, and method for manufacturing protective film |
| CN111478993A (en) * | 2020-04-02 | 2020-07-31 | Oppo广东移动通信有限公司 | Protective film for electronic device, and method for manufacturing protective film |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201637833A (en) | 2016-11-01 |
| CN105911618B (en) | 2020-01-07 |
| JP2016157110A (en) | 2016-09-01 |
| KR20160103681A (en) | 2016-09-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105911618A (en) | Foldable hard coating film and display device comprising thereof | |
| CN106064488B (en) | Method for producing folded hard coat film | |
| JP6896378B2 (en) | Laminated film and image display device including it | |
| JP6553282B2 (en) | Flexible plastic film | |
| JP7086959B2 (en) | Double cure protective display film | |
| JP6687185B2 (en) | Flexible plastic film | |
| KR101437093B1 (en) | Active energy ray-curable composition | |
| US20170036242A1 (en) | Hard coating film and flexible display having the same | |
| CN105764966B (en) | Plastic foil and preparation method thereof | |
| CN107641348A (en) | Hard coat film and the Flexible Displays window including touch sensor using the hard coat film | |
| TW201418379A (en) | Energy ray-curable resin composition, cured product and laminate | |
| CN107544100A (en) | Hard coat film and use its image display device | |
| CN110325356A (en) | Flexible window laminated body and image display device including flexible window laminated body | |
| US20210062033A1 (en) | Flexible plastic film | |
| JP6565276B2 (en) | Curable composition, cured product and laminate | |
| KR20140112987A (en) | Composition for antistatic coat with ultraviolet curing | |
| TW202003711A (en) | Photosensitive resin composition and anti-glare film | |
| JP6891404B2 (en) | Coating agent | |
| JP7140187B2 (en) | Active energy ray-curable composition and film using the same | |
| JP6218350B2 (en) | Antistatic hard coat resin composition and film having antistatic hard coat layer | |
| TW201500487A (en) | Photocurable coating composition, coating film and polarizing plate using the same | |
| CN113423771B (en) | Window film for flexible display | |
| JP7295769B2 (en) | hard coat film | |
| JP7071813B2 (en) | Hardcourt film manufacturing method and antireflection film manufacturing method | |
| KR20210112142A (en) | Anti-Glare Film |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |