CN109642964A - Hard coat film - Google Patents
Hard coat film Download PDFInfo
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- CN109642964A CN109642964A CN201680088557.2A CN201680088557A CN109642964A CN 109642964 A CN109642964 A CN 109642964A CN 201680088557 A CN201680088557 A CN 201680088557A CN 109642964 A CN109642964 A CN 109642964A
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- Prior art keywords
- film
- hard coat
- hard conating
- coat film
- hard
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/14—Protective coatings, e.g. hard coatings
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- 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
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
-
- 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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/02—Physical, chemical or physicochemical properties
- B32B7/023—Optical properties
-
- 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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
-
- 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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/046—Forming abrasion-resistant coatings; Forming surface-hardening coatings
-
- 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
- B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Surface Treatment Of Optical Elements (AREA)
- Laminated Bodies (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The present invention provides a kind of hard coat film (1), its hard conating (3) for having base material film (2) at least one main surface side for being layered in base material film (2), base material film (2) is polyimide film, the refractive index of the refractive index and hard conating (3) of the polyimide film difference with absolute value be calculated as 0.04 hereinafter, hard conating (3) with a thickness of 0.5 μm or more, 10 μm or less.The hard coat film (1) has the resistance to bend(ing) for being resistant to alternating bending, while being not likely to produce interference fringe.
Description
Technical field
The present invention relates to a kind of hard coat films for having base material film and hard conating, in particular to one kind is suitable for being used in flexible show
Show the hard coat film of device.
Background technique
In electronic equipment of various, utilizing extensively has liquid crystal display (LCD), organic el display (OELD) and touch surface
The various displays such as plate.It damages in order to prevent, be provided with is provided with more on base material film on the surface of these various displays
The hard coat film of hard conating.
However, in recent years, as display as described above, exploitation has flexible display, i.e., so-called flexibility
Display.Flexible display is for example as its bending is made to be set as the placement escope use of columned column or make
By its bending or to roll Leading format device so as to carrying with and wide use on the way by expectation.As flexibility
Hard coating film for display proposes hard coat film disclosed in a kind of patent document 1 and 2.
Here, flexible display not only carries out 1 curved surface forming, but as documented by patent document 3, sometimes
Also it can make its alternating bending (bending).
Existing technical literature
Patent document
Patent document 1: No. 5468167 bulletins of Japanese Patent No.
Patent document 2: Japanese Unexamined Patent Publication 2015-69197 bulletin
Patent document 3: Japanese Unexamined Patent Publication 2016-2764 bulletin
Summary of the invention
The technical problem to be solved in the present invention
However, can generate when previous hard coat film being used in the flexible display of purposes as described above repeatedly
The problem of generating bending trace or albefaction on curved position, appearance caused to be deteriorated, while being reduced as the visibility of display.
On the other hand, interference fringe is generated on hard coat film because of a variety of causes sometimes.Interference item is generated on hard coat film
When line, the problem of still generating appearance variation, while be reduced as the visibility of display.
The present invention is carried out in view of above-mentioned actual conditions, is resistant to alternating bending its purpose is that providing one kind and having
Resistance to bend(ing), while being not likely to produce the hard coat film of interference fringe.
Solve the technological means of technical problem
In order to achieve the above objectives, first, the present invention provides a kind of hard coat film, has base material film and is layered in the base
The hard conating of at least one main surface side of material film, which is characterized in that the base material film is polyimide film, the polyimide film
Refractive index and the hard conating refractive index difference with absolute value be calculated as 0.04 hereinafter, the hard conating with a thickness of 0.5 μm
Above, 10 μm or less (invention 1).
By making base material film polyimide film, and make the thickness of hard conating within the above range, foregoing invention (invention 1)
Hard coat film resistance to bend(ing) and excellent scratch resistance.In addition, by making above-mentioned refringence within the above range, the hard coat film
It is not likely to produce interference fringe.
In foregoing invention (invention 1), preferably the refractive index of hard conating is 1.40 or more, 1.85 or less (inventions 2).
In foregoing invention (invention 1,2), the preferably described polyimide film (is sent out with a thickness of 5 μm or more, 300 μm or less
It is bright 3).
In foregoing invention (invention 1~3), the preferably described hard conating by make containing active energy ray-curable ingredient with
Material made of the composition solidification of transition metal oxide particle forms (invention 4).
The hard coat film of foregoing invention (invention 1~4) is used (hair preferably as the flexible member for constituting flexible display
It is bright 5).
In foregoing invention (invention 1~5), adhering agent layer preferably is laminated at least one main surface side of the base material film
(invention 6).
Invention effect
Hard coat film of the invention has the resistance to bend(ing) for being resistant to alternating bending, while being not likely to produce interference fringe.
Detailed description of the invention
Fig. 1 is the sectional view of the hard coat film of an embodiment of the invention.
Fig. 2 is the sectional view of the hard coat film of another embodiment of the present invention.
Fig. 3 is the sectional view of the hard coat film of another embodiment of the invention.
Specific embodiment
Hereinafter, embodiments of the present invention will be described.
Fig. 1 is the sectional view of the hard coat film of an embodiment of the invention.The hard coat film 1 of present embodiment is by having
Base material film 2 be layered in base material film a main surface side (upside in Fig. 1) hard conating 3 and constitute.
In above-mentioned hard coat film 1, base material film 2 is polyimide film.By making 2 polyimide film of base material film, should
When hard coat film 1 is suitable for flexible display and carries out alternating bending, it is able to suppress and generates bending trace or white on base material film 2
Change, resistance to bend(ing) is excellent.Therefore, the flexible display of the hard coat film 1 of present embodiment has been used in predetermined portion alternating bending
When, it is able to suppress and appearance variation or visibility reduction occurs in the crooked position.
In addition, the difference of the refractive index of above-mentioned polyimide film and the refractive index of above-mentioned hard conating 3 is calculated as 0.04 with absolute value
Below.In the hard coat film 1 of present embodiment, by make the difference of the refractive index of polyimide film and the refractive index of hard conating 3 with
Absolute value is calculated as 0.04 hereinafter, the light reflection being able to suppress on the interface of hard conating 3 and base material film 2, is not likely to produce and applies firmly
The interference of reflected light on the surface of layer 3, thus, it is possible to inhibit to generate interference fringe.In addition, refractive index in this specification
Measurement wavelength is set as 589nm, and measuring temperature is set as 25 DEG C.The detailed content of the measuring method of refractive index test example institute as be described hereinafter
Show.
From the angle for inhibiting generation interference fringe, the folding of the refractive index of above-mentioned polyimide film and above-mentioned hard conating 3
The difference for penetrating rate is preferably 0.03 in terms of absolute value hereinafter, particularly preferably 0.02 or less.
Further, above-mentioned hard conating 3 with a thickness of 0.5 μm or more, 10 μm or less.When the thickness of hard conating 3 is more than 10 μm,
The bendability of hard coat film 1 reduces.On the other hand, when the thickness of hard conating 3 is less than 0.5 μm, the surface hardness of hard conating 3 is lower,
Marresistance is deteriorated.That is, the resistance to bend(ing) and marresistance of hard coat film 1 become by making the thickness of hard conating 3 within the above range
It obtains excellent.
From above-mentioned angle, the thickness of hard conating 3 is preferably 0.75 μm or more, and particularly preferably 1 μm or more.This
Outside, the thickness of hard conating 3 is preferably 8 μm hereinafter, particularly preferably 6 μm or less.
(1) member of formation of hard coat film
(1-1) base material film
The base material film 2 of the hard coat film 1 of present embodiment is polyimide film, is display used time, preferably transparent and band
The less polyimide film of yellow.Thereby, it is possible to obtain showing that the display of the higher image of transparent and color reprodubility is (special
It is flexible display).
Specifically, as polyimide film used in present embodiment, from the angle of the transparency, optimal wavelength
Transmissivity at 550nm is 75% or more, more preferably 80% or more, particularly preferably 85% or more.It is saturating in this specification
It penetrates shown in the measuring method embodiment as be described hereinafter of rate.
In addition, from yellowy angle is reduced, being preferably based on as polyimide film used in present embodiment
The absolute value of the b* of the L*a*b* color specification system of transmission measurement is 10 polyimide films below, the more preferable absolute value be 5 with
Under polyimide film, the particularly preferred absolute value is 3 polyimide films below.The measuring method of b* in this specification is such as
Shown in aftermentioned embodiment.
Polyimide film in this specification refers to: preferably comprising 50 mass % or more, particularly preferably contains 80 mass %
Above, further preferably the polyimides of 90 mass % or more, i.e. on main chain with imide bond polymer film.
In addition, being not polyimides since poly- (methyl) acrylimide has imide bond not on main chain, make such
When poly- (methyl) acrylimide film alternating bending, albefaction can be generated.
Polyimide film usually can be by making tetracarboxylic anhydride (optimization aromatic tetracarboxylic dianhydride) and diamines (preferred fragrance
Race's diamines) in the solution polymerization it is membranaceous to which after generating polyamic acid, which is shaped to, then to polyamic acid
Position carries out dehydration closed-loop and obtains, and but not limited to this.
Polyimides in polyimide film can also be modified.For example, aromatic rings usually contained in polyimides
It can be modified by aliphatic hydrocarbon, the adaptation of base material film 2 and hard conating 3 becomes excellent as a result,.
The lower limit value of refractive index as polyimide film, usually 1.50 or more, preferably 1.55 or more, it is further excellent
It is selected as 1.60 or more.In addition, the upper limit value of the refractive index as polyimide film, usually 1.85 hereinafter, preferably 1.80 with
Under, further preferably 1.75 or less.
For above-mentioned polyimide film, with layer (hard conating 3 or the aftermentioned adhering agent layer for improving with being arranged on its surface
Deng) adaptation for the purpose of, can as needed by prime treatment, oxidizing process, further provided for contouring method etc. to one or both sides implement
Surface treatment.As oxidizing process, for example, can enumerate Corona discharge Treatment, chromic acid processing, flame treatment, hot wind processing, it is smelly
Oxygen UV treatment etc., as further provided for contouring method, such as sand-blast, solvent treatment method can be enumerated etc..
The lower limit value of thickness as above-mentioned polyimide film, preferably 5 μm or more, particularly preferably 7.5 μm or more, into
One step is preferably 10 μm or more.By make polyimide film with a thickness of more than above-mentioned, hard coat film 1 can play as defined in it is mechanical strong
Degree, even if making also to be not susceptible to fracture etc. when its alternating bending.On the other hand, the upper limit as the thickness of above-mentioned polyimide film
Value, preferably 300 μm hereinafter, particularly preferably 90 μm hereinafter, further preferably 50 μm or less.Since polyimide film is easy
Coloring, thus by make polyimide film with a thickness of above-mentioned following, it can be ensured that the transparency, and above-mentioned b* value capable of being inhibited
Must be lower, it is used so as to suitably be used as optics.In addition, polyimide film with a thickness of it is above-mentioned following when, hard coat film 1 can be sent out
Defined flexibility is waved, bending is become easy.
(1-2) hard conating
The hard conating 3 of the hard coat film 1 of present embodiment is laminated in a main surface side (upside in Fig. 1) for base material film 2, right
Hard coat film 1 assigns higher surface hardness.
The lower limit value of refractive index as hard conating 3, preferably 1.40 or more, particularly preferably 1.45 or more, further
Preferably 1.56 or more.In addition, the upper limit value of the refractive index as hard conating 3, preferably 1.85 are hereinafter, particularly preferably 1.80
Hereinafter, further preferably 1.75 or less.By making the refractive index of hard conating 3 within the above range, the refraction of polyimide film
The absolute value of the difference of rate becomes prone to become 0.04 or less.
As long as hard conating 3 meets above-mentioned refringence, and has defined hardness simultaneously, then it is not particularly limited, but excellent
The material as made of solidifying the composition containing active energy ray-curable ingredient is selected to be formed, particularly preferably by making containing work
Property energy ray-curable ingredient and transition metal oxide particle composition (hereinafter sometimes referred to " and hard conating combination
Object ") solidification made of material formed.
(1-2-1) active energy ray-curable ingredient
As active energy ray-curable ingredient, preferably solidify to play regulation by irradiating active energy beam
Hardness, and the active energy beam for reaching above-mentioned refringence with the relationship of transition metal oxide particle can be utilized
Curability composition.
As specific active energy ray-curable ingredient, polyfunctionality (methyl) esters of acrylic acid list can be enumerated
Body, (methyl) esters of acrylic acid prepolymer, active energy ray-curable polymer etc., wherein preferred polyfunctionality (methyl)
Acrylic ester monomer and/or (methyl) esters of acrylic acid prepolymer, more preferable polyfunctionality (methyl) acrylic ester monomer.
Polyfunctionality (methyl) acrylic ester monomer and (methyl) esters of acrylic acid prepolymer can use individually, and can also make simultaneously
With the two.In addition, in the present specification, (methyl) acrylate refers to both acrylate and methacrylate.It is other
Similar term is also identical.
As polyfunctionality (methyl) acrylic ester monomer, such as 1,4-butanediol two (methyl) acrylic acid can be enumerated
Ester, 1,6-hexylene glycols two (methyl) acrylate, neopentyl glycol two (methyl) acrylate, polyethylene glycol two (methyl) acrylic acid
Ester, hydroxy new pentane acid neopentyl glycol two (methyl) acrylate, two (methyl) dicyclopentanyl acrylates, two (first of caprolactone modification
Base) acrylic acid dicyclopentenyl ester, ethylene-oxide-modified di(2-ethylhexyl)phosphate (methyl) acrylate, allylation two (methyl) acrylic acid ring
Own ester, isocyanuric acid ester two (methyl) acrylate, trimethylolpropane tris (methyl) acrylate, three (first of dipentaerythritol
Base) acrylate, propionic acid modified dipentaerythritol three (methyl) acrylate, pentaerythrite three (methyl) acrylate, epoxy
Propane is modified trimethylolpropane tris (methyl) acrylate, three (acryloyl-oxyethyl) isocyanuric acid esters, propionic acid modified two
Pentaerythrite five (methyl) acrylate, dipentaerythritol six (methyl) acrylate, ethylene-oxide-modified dipentaerythritol six
(methyl) acrylate, caprolactone modification dipentaerythritol six (methyl) acrylate etc. polyfunctionalities (methyl) acrylate.
They can be used alone a kind, also can be used in combination two or more.Among above-mentioned, from transition metal oxide particle dispersibility and
The angle of marresistance is set out, preferably dipentaerythritol six (methyl) acrylate, six (first of ethylene-oxide-modified dipentaerythritol
Base) acrylate or their mixture.
On the other hand, as (methyl) esters of acrylic acid prepolymer, such as polyester acrylates, epoxy third can be enumerated
The prepolymers such as olefin(e) acid esters, urethane acrylate class, polyalcohol acrylate class.
It as polyester acrylates prepolymer, such as can obtain in the following manner: utilize (methyl) acrylic acid
There is the hydroxyl of the polyester oligomers of hydroxyl to be esterified two ends as obtained from the condensation of polybasic carboxylic acid and polyalcohol,
Or it is esterified using (methyl) acrylic acid to by the hydroxyl of the end of alkylene oxide addition oligomer obtained from polybasic carboxylic acid.
Epoxy Acrylates prepolymer for example can be by making (methyl) acrylic acid and the lower bis-phenol type ring of molecular weight
The oxirane ring of oxygen resin or phenolic resin varnish type epoxy resin is reacted and is esterified to obtain.
Urethane acrylate class prepolymer for example can be by utilization (methyl) acrylic acid to passing through polyether polyols
Polyurethane oligomer obtained from the reacting of alcohol or polyester polyol and polyisocyanate, which is esterified, to be obtained.
Polyalcohol acrylate class prepolymer for example can be by utilization (methyl) acrylic acid to the hydroxyl of polyether polyol
It is esterified and is obtained.
Above prepolymer can be used alone a kind, also can be used in combination two or more.
(1-2-2) transition metal oxide particle
The composition for hard coat for constituting the hard conating 3 of present embodiment preferably comprises transition metal oxide particle.It is logical
It crosses containing transition metal oxide particle, the refractive index of hard conating 3 can be made close to the refractive index of above-mentioned polyimide film, it can
Refractive index absolute value of the difference is easily set to become 0.04 or less.It is further possible to assign higher surface hardness to hard conating 3.
As above-mentioned transition metal oxide particle, such as preferred zirconium oxide, titanium oxide, tantalum oxide, zinc oxide, oxidation
The particles such as hafnium, cerium oxide, niobium oxide.They can be used alone or in combination of two or more.Among above-mentioned, particularly preferably
Higher refractive index can be assigned to hard conating 3 while being not easy the oxide for the 4th race's element for improving the mist degree of hard conating 3
Particle, specifically particularly preferred zirconia particles and titanium oxide microparticle.The crystal structure of titanium oxide microparticle is not particularly limited,
But preferably rutile-type.By making its rutile-type, hard conating 3 caused by being able to suppress because of photocatalyst activity through when
Deterioration.
Zirconia particles and titanium oxide microparticle can also be surface treated.For example, can be covered by the oxide of aluminium, silicon etc.,
It can be modified by organic compound.As organic compound, such as polyalcohol, alkanolamine, stearic acid, silane coupled can be enumerated
Agent, titanate coupling agents.Surface treatment in this way can be such that dispersibility etc. improves, above-mentioned effect can be made more excellent.
The shape of transition metal oxide particle can be spherical, can also be non-spherical.
The lower limit value of average grain diameter as transition metal oxide particle, preferably 1nm or more, particularly preferably 3nm
More than, further preferably 5nm or more.It is dispersed to obtain by making the average grain diameter 1nm or more of transition metal oxide particle
To improve, while obtained hard conating 3 becomes have higher surface hardness.In addition, as transition metal oxide particle
Average grain diameter upper limit value, preferably 500nm hereinafter, particularly preferably 200nm hereinafter, further preferably 50nm or less.
By making the average grain diameter 500nm of transition metal oxide particle hereinafter, being not susceptible to light in obtained hard conating 3
Scattering, the transparency of hard conating 3 are got higher.In addition, being set as the average grain diameter of transition metal oxide particle to pass through Zeta potential
Measuring method and the primary particle size measured.
About the content of the transition metal oxide particle in the hard conating 3 of present embodiment, in hard conating 3, below
Limit value meter, preferably 5 mass % or more, particularly preferably 10 mass % or more, further preferably 40 mass % or more.Pass through
Make the 5 mass % of content or more of transition metal oxide particle, the refractive index of hard conating 3 becomes easy close to polyimide film
Refractive index, while becoming easy and assigning higher surface hardness to hard conating 3.On the other hand, in hard conating 3, transition gold
Belong to oxide fine particle content in terms of upper limit value, preferably 95 mass % hereinafter, particularly preferably 85 mass % hereinafter, further
Preferably 75 mass % or less.By making the 95 mass % of content of transition metal oxide particle hereinafter, as described above,
The refractive index of hard conating 3 becomes easy the refractive index close to polyimide film, while becoming easy to be formed and having used hard conating use
The layer of composition.
It, can be with when mix proportions are unknown in addition, the content of transition metal oxide particle can be found out by mix proportions
Following manner is found out.That is, a part of the hard conating 3 of hard coat film 1 is separated from base material film 2 in the form of part etc., and according to
The organic principle of the part of the isolated hard conating 3 of JIS 7250-1 burning.Then, transition gold can be found out by obtained ash content
Belong to the quality % of oxide fine particle.
Here, in order to improve the dispersibility of the transition metal oxide particle in composition for hard coat, it is possible to use point
Powder.As dispersing agent, from the angle of the compatibility with active energy ray-curable ingredient, preferably acrylic compounds tree
Rouge.
(1-2-3) Photoepolymerizationinitiater initiater
Ultraviolet light is used as when making the cured active energy beam of active energy ray-curable ingredient, above-mentioned hard conating is used
Composition preferably comprises Photoepolymerizationinitiater initiater.By containing Photoepolymerizationinitiater initiater like this, active energy ray-curable can be made
Property polymerize well at component efficiency, and can reduce polymerizing curable time and ultraviolet irradiation amount.
As such Photoepolymerizationinitiater initiater, such as benzoin, benzoin methylether, benzoin ethyl ether, benzene idol can be enumerated
Relation by marriage isopropyl ether, benzoin n-butylether, benzoin isobutyl ether, acetophenone, dimethylamino acetophenone, 2,2- dimethoxy -2- phenyl
Acetophenone, 2,2- diethoxy -2- phenyl acetophenone, 2- hydroxy-2-methyl -1- phenyl-propane -1- ketone, 1- hydroxy-cyclohexyl benzene
Base ketone, 2- methyl-1-[4- (methyl mercapto) phenyl]-2- morpholine-propane-1- ketone, 4- (2- hydroxyl-oxethyl) phenyl-2- (hydroxyl-
2- propyl) ketone, benzophenone, to phenyl benzophenone, 4,4 '-lignocaine benzophenone, dichloro benzophenone, 2- methyl anthracene
Quinone, 2- ethyl hydrazine, 2- tert-butyl anthraquinone, 2- amino anthraquinones, 2- methyl thioxanthones, 2- ethyl thioxanthones, 2-chlorothioxanthone, 2,
4- dimethyl thioxanthone, 2,4- diethyl thioxanthone, benzyl dimethyl ketal, acetophenone dimethyl ketal, to Dimethylaminobenzene first
Acid esters, oligomerization [2- hydroxy-2-methyl -1 [4- (1- methyl ethylene) phenyl] acetone], 2,4,6- trimethylbenzoyl-two
Phenyl-phosphine oxide etc..They can be used alone, and also can be used in combination two or more.
The content of Photoepolymerizationinitiater initiater in composition for hard coat, relative to active energy ray-curable ingredient 100
Mass parts, in terms of lower limit value, it is more than preferably 0.01 mass parts, it is more than particularly preferably 0.1 mass parts, further preferably 1
It is more than mass parts.In addition, preferably 20 below the mass in terms of upper limit value, particularly preferably 10 below the mass, further excellent
It is selected as 5 below the mass.
(1-2-4) other ingredients
The composition for hard coat for constituting the hard conating 3 of present embodiment in addition to the above ingredients, can also contain various
Additive.As various additives, such as ultraviolet absorbing agent, antioxidant, light stabilizer, antistatic agent, silicon can be enumerated
Alkane coupling agent, thermal polymerization inhibitor, colorant, surfactant, preserving stabilizer, plasticizer, lubricant, disappears at antiaging agent
Infusion, organic packing material, wettability modifying agent, coating surface modifying agent etc..
(2) manufacturing method of hard coat film
The hard coat film 1 of present embodiment can preferably be manufactured by the following method.In this method, as an example
Son uses the composition for hard coat containing active energy ray-curable ingredient.
Firstly, forming the composition layer formed by composition for hard coat on an interarea of base material film 2.At this point, can
Composition for hard coat is directly coated at an interarea of base material film 2 to form composition layer, it can also be by hard conating group
After conjunction object is coated on emulsion sheet, the composition layer with the attached emulsion sheet is fitted on an interarea of base material film 2.
As emulsion sheet, it is able to use required resin film.It is further possible to use using remover to these resin films
One or both sides carry out lift-off processing obtained from stripping film.
Composition layer can be formed in the following manner: preparation is containing composition for hard coat and as needed and into one
The coating fluid containing solvent is walked, is coated on base material film 2 or emulsion sheet, and make it dry.The coating of coating fluid uses normal
Method carries out, such as passes through stick rubbing method, scraper for coating method, Meyer stick method, roller coating method, scraper coating method, mould
Has rubbing method, gravure coating process carries out.Drying for example can be and being heated 30 seconds~5 minutes or so with 40~180 DEG C
It carries out.
As solvent, such as the aliphatic hydrocarbons such as hexane, heptane can be enumerated, the aromatic hydrocarbons such as toluene, dimethylbenzene, dichloromethane
The halogenated hydrocarbons such as alkane, dichloroethanes, the alcohol such as methanol, ethyl alcohol, propyl alcohol, butanol, propylene glycol monomethyl ether, acetone, methyl ethyl ketone, methyl
The ketone such as isobutyl ketone, 2 pentanone, isophorone, cyclohexanone, the esters such as ethyl acetate, butyl acetate, the cellosolves such as ethyl cellosolve
Class solvent etc..Solvent can be used only a kind, can also be mixed with two or more.It can as long as the concentration viscosity of coating fluid is
The range of coating, is not particularly limited, and can suitably be selected according to situation.
Then, by irradiating active energy beam to said combination nitride layer, solidify the composition layer, to form hard apply
Layer 3.
As active energy beam, it is able to use ultraviolet light, electron beam etc..Ultraviolet light irradiation can utilize high-pressure mercury
Lamp, Fusion H lamp, xenon lamp etc. and carry out, about ultraviolet irradiation amount, preferably illumination is 50~1000mW/cm2, light quantity
For 50~1000mJ/cm2Left and right.On the other hand, electron beam irradiation can be carried out by electron-beam accelerator etc., electron beam
Exposure is preferably 10~1000krad or so.
In addition, said combination nitride layer is preferably shone in the state that oxygen is isolated when ultraviolet light is used as active energy beam
Penetrate ultraviolet light.It is not exposed to solidify caused by because of oxygen as a result, and hinder, be effectively formed the higher hard conating 3 of surface hardness.
In order to which said combination nitride layer is isolated from oxygen, when being attached with emulsion sheet in said combination nitride layer, keep being covered with
The state of the emulsion sheet, in said combination nitride layer additional emulsion sheet when, again by emulsion sheet be laminated in said combination nitride layer or
The laminated body of base material film 2 and composition layer is placed under the lower environment of oxygen concentration by person, is preferably positioned under nitrogen atmosphere.
(3) physical property of hard coat film
(3-1) maximum reflectivity is poor
As described above, being able to suppress generation interference fringe in the hard coat film 1 of present embodiment.The effect is in addition to can
By visual observation and other than being evaluated, additionally it is possible to be judged by the measured value of maximum reflectivity difference.It is poor to measure maximum reflectivity
When, film normal direction is set as 0 ° first, from 8 ° of direction irradiation lights of incidence angle, is assembled by the light that integrating sphere is reflected, by
This is detected as reflected light.In addition, changing wavelength to carry out the irradiation of light, and detect the reflected light for corresponding to each wavelength.
Reflected light is as the relative value when reflected light crystallized based on barium sulfate is set as 100 (hereinafter, being referred to as " anti-
Penetrate rate "), by correspond to each measurement wavelength in a manner of and detect.That is, horizontal axis can be obtained as measurement wavelength, the longitudinal axis is reflectivity
Chart.The chart is usually the shape with the fluctuating of multiple minimums and maximum.
Here, measuring adjacent maximum and minimum in the chart of reflectivity that measurement wavelength is 500~600nm
Difference among it is maximum difference be used as " maximum reflectivity is poor ".The maximum reflectivity difference is preferably 1.5 hereinafter, particularly preferably 1.1
Hereinafter, further preferably 0.6 or less.By making reflectivity 1.5 hereinafter, being able to suppress generation interference fringe.
(3-2) minimum axle diameter
As described above, the resistance to bend(ing) for being resistant to alternating bending of the hard coat film 1 of present embodiment is excellent, it is curved about its
Qu Chengdu can judge according to minimum axle diameter.
For the hard coat film 1 of present embodiment, in the resist bending based on cylinder formed core method of principal axes according to JIS K5600-5-1
Property test in, in the mandrel that does not crack and flake off on hard conating 3, diameter is diameter (the minimum core of the smallest mandrel
Shaft diameter) it is preferably 14mm hereinafter, particularly preferably 6mm is hereinafter, further preferably 4mm or less.
(3-3) image definition
The interference fringe of the hard coat film 1 of present embodiment prevents, and not by the micron-sized particle of addition, but passes through
Reduce the refringence of hard conating 3 and base material film 2 and solves.Therefore, it is prevented compared to by adding micron-sized particle
The hard coat film 1 of the case where interference fringe, present embodiment can become the film with superior image definition.
When the excellent hard coat film of image definition is suitable for display, it can obtain displaying contrast excellent image
Display.From the angle, image definition is preferably 400% or more, and more preferably 430% or more, particularly preferably
450% or more.
In addition, image definition can according to JIS K7374, as with 5 kinds of slits (slit width: 0.125mm, 0.25mm,
0.5mm, 1mm and 2mm) measurement each image definition aggregate value and find out.
(3-4) haze value
When suitable for display, from the angle for making it show clearer image, preferably will according to JIS K7136 and
The haze value of the hard coat film 1 of measurement is set as 1% hereinafter, being more preferably set as 0.8% hereinafter, being particularly preferably set as 0.5% or less.
(3-5) 60 ° of glossiness
When suitable for display, from the angle for making it show clearer image, preferably by the hard painting in hard coat film 1
60 ° of glossiness (Gloss value) of the foundation JIS Z8741-1997 of layer 3 are set as 100% or more value, are more preferably set as 120%
Above value is particularly preferably set as 140% or more value.
(4) other embodiment -1
As shown in Fig. 2, can also the base material film 2 in above-mentioned hard coat film 1 another main surface side (be laminated with hard conating 3
Face be opposite side surface side) stacking the second hard conating 4 (symbol of hard coat film shown in Fig. 2 is denoted as " 1A ").Pass through stacking
Second hard conating 4, the marresistance of another main surface side of base material film 2 are improved, while passing through second hard conating 4
Cure shrinkage offsets the cure shrinkage of hard conating 3, is able to suppress the warpage of hard coat film 1A.
Second hard conating 4 can be formed by material identical with above-mentioned hard conating 3, can also be formed from different materials.In addition,
The thickness of second hard conating 4 can be thickness identical with above-mentioned hard conating 3, can also be different thickness.
The hard coat film 1A of present embodiment can substantially be manufactured in a manner of identical with above-mentioned hard coat film 1.But it can
The solidification of hard conating 3 and the second hard conating 4 is carried out simultaneously, it can also be in the composition layer for forming hard conating 3 (or second hard conating 4)
And after solidifying it, forms the composition layer of the second hard conating 4 (or hard conating 3) and make its solidification.
(5) other embodiment -2
As shown in figure 3, can also the base material film 2 in hard coat film 1 another main surface side (with the face for being laminated with hard conating 3
For the surface side of opposite side) stacking adhering agent layer 5 (symbol of hard coat film shown in Fig. 3 is denoted as " 1B ").By as stacking
Hard coat film 1B can be simply attached on required adherend by adhering agent layer 5.In addition, equally can also be in hard coat film 1A
The side opposite with 2 side of base material film of the second hard conating 4 adhering agent layer is laminated.
As the sticker for constituting adhering agent layer 5, it is not particularly limited, is able to use acrylic compounds sticker, rubber
Sticker well known to sticker, silicone sticker etc..The thickness of adhering agent layer 5 is not particularly limited, but usually 5~100 μ
M, preferably 10~60 μm of range.
The hard coat film 1B of present embodiment can substantially be manufactured in a manner of identical with above-mentioned hard coat film 1.Sticker
Layer 5 is formed by common method.
In addition, stripping film can also be laminated in the exposed surface (being the face of opposite side with 2 side of base material film) of adhering agent layer 5.
(6) other embodiment -3
Other layers can also be laminated in the hard coat film 1 of present embodiment, such as viscous adhesion agent layer, barrier layer, conductive layer, low anti-
Penetrate layer, easy printing layer, stain-proofing layer etc..
(7) purposes of hard coat film
Hard coat film 1,1A, 1B of above embodiment can be preferably used as example various e-machines, particularly shifting
The surface layer (protective film) of flexible display in dynamic formula e-machine or the flexible member of middle layer, specifically, can be preferred
It is used as the various Flexible Displays such as liquid crystal display (LCD), organic el display (OELD), electronics paper matrix group (membranaceous Electronic Paper)
The surface layer (protective film) of device or the flexible member of middle layer.
Embodiments described above be for easy understanding the present invention and records, be not intended to limit of the invention and remember
It carries.Therefore, the objective of each element disclosed in above embodiment also includes and belongs to the whole of technical scope of the invention to set
Meter change and equipollent.
For example, can also between the base material film 2 in hard coat film 1,1A, 1B and hard conating 3, the second hard conating 4 or adhering agent layer 5
There are other layers.
Embodiment
Hereinafter, further specifically describing the present invention by embodiment etc., but the scope of the present invention is not by these embodiments
Deng restriction.
[Production Example 1] (manufacture 1 of base material film)
In n,N-dimethylacetamide solvent, by 2,2 '-bis- (trifluoromethyl) -4,4 '-benzidines, xenyl four
Carboxylic acid dianhydride and bis- (3,4- bis- carboxy phenyl) the hexafluoro propionic acid dianhydrides of 2,2- mixed dissolution under cooling, then stir 10 at normal temperature
Hour, thus obtain polyamic acid solution.
Acetic anhydride and pyridine are added into obtained polyamic acid solution, after being sufficiently stirred, are coated on glass plate
On, 180 DEG C are warming up to from room temperature at leisure.After reaching 180 DEG C, certain time is heated, is then vacuumized, thus be will volatilize
Ingredient completely removes.Finally, obtaining the polyimide film A that film thickness is 25 μm by being cooled to room temperature under vacuum.To the polyamides
Imines film A is measured, b* 0.61, refractive index 1.62, and the transmissivity at wavelength 550nm is 90%.
In addition, according to JIS K7130, using level pressure thickness tester, (Teclock company is manufactured, name of product " PG-
02 ") film thickness of polyimide film is measured.
About above-mentioned b*, according to JIS Z8722, same fixed time testing plan beam splitting type colour difference meter (NIPPON DENSHOKU is used
INDUSTRIES Co., LTD manufacture, name of product " SQ-2000 ") make as measurement device, using 2 ° of visuals field (C/2) of illuminant-C
For light source, the b* of L*a*b* color specification system is measured by transmission measurement.
Using the visible near-infrared spectral transmission meter of ultraviolet light, (Shimadzu Corporation is manufactured, name of product
" UV3600 ") transmissivity at the above-mentioned wavelength 550nm of measurement.
[Production Example 2] (manufacture 2 of base material film)
In addition to changing 2,2 '-bis- (trifluoromethyl) -4,4 '-benzidines, connection in n,N-dimethylacetamide solvent
The mix proportions of phenyl tetracarboxylic dianhydride and bis- (bis- carboxy phenyl of 3,4-) the hexafluoro propionic acid dianhydrides of 2,2- simultaneously adjust obtained polyamides
Other than the concentration of imines coating fluid, by implementing identical with Production Example 1 manufacturing method, obtain film thickness be 15 μm, b* 2.25,
The polyimide film B that refractive index is 1.70, the transmissivity at wavelength 550nm is 87% (measuring method is as shown above).
[embodiment 1]
It (will be scaled solid as 100 mass parts of dipentaerythritol hexaacrylate of active energy ray-curable ingredient
Body ingredient；It is same as below), as surface modified zirconia particle (the CIK Nanotek corporation of transition metal oxide particle
Make, name of product " ZRMIBK15WT%-F85 ", average grain diameter: 15nm) 150 mass parts and the 1- hydroxyl as Photoepolymerizationinitiater initiater
5 mass parts of butylcyclohexyl phenyl ketone, with the quality of 1:1 than in the mixed solvent made of mixed methyl isobutyl ketone and cyclohexanone
It is stirred mixing, to obtain the coating fluid of composition for hard coat.
Then, use Meyer stick that the coating fluid of above-mentioned composition for hard coat is coated on to the polyimides as base material film
The one side of film A, and make its heat drying 1 minute with 70 DEG C, to form the composition layer of composition for hard coat.
Then, under the following conditions, ultraviolet light is irradiated from said combination nitride layer side, to make composition for hard coat
Composition layer solidification, forms hard conating (thickness: 3 μm), obtains hard coat film.
<ultraviolet light irradiation condition>
Ultraviolet lamp: the ultraviolet lamp of GS Yuasa Corporation manufacture
Light source: high-pressure mercury-vapor lamp
Lamp electric power: 1.4kW
Illumination: 100mW/cm2
Light quantity: 240mJ/cm2
Conveyor belt speed: 1.2m/min
Irradiate ultraviolet light in a nitrogen environment (oxygen concentration is 1% or less)
[embodiment 2~8, the Comparative Examples 1 to 5]
In addition to the type of each ingredient of composition for hard coat and the thickness and substrate of blended amount, hard conating will be constituted
Other than the type and thickness of film are changed to as shown in table 1, hard coat film is manufactured in the same manner as example 1.
In addition, the detailed content of dummy suffix notation recorded in table 1 etc. is as follows.
A: dipentaerythritol hexaacrylate
B: ethylene-oxide-modified dipentaerythritol hexaacrylate (importing 12 moles of ethylene oxide)
C: surface modified zirconia particle (manufacture of CIK Nanotec company, name of product " ZR MIBK15WT%-F85 ",
Average grain diameter: 15nm)
D: surface modified titanium oxide microparticle (manufacture of TAYCA company, name of product " ND139 ", average grain diameter: 10nm)
E:1- hydroxycyclohexylphenylketone
PI-25: polyimide film A
PI-15: polyimide film B
PET: polyethylene terephthalate film (Mitsubishi Plastics, Inc. manufacture, name of product
" Diafoil T-60 ", thickness: 50 μm)
[test example 1] (measurement of refractive index)
(1) refractive index of base material film
Measure wavelength be 589nm, measuring temperature is 25 DEG C under conditions of, using Abbe refractometer (ATAGO CO.,
LTD. manufacture, name of product " multi-wavelength Abbe refractometer DR-M2 "), according to JIS K7142 (2008), measure embodiment and ratio
Compared with the refractive index of base material film used in example.Show the result in table 2.
(2) refractive index of hard conating
In polyethylene terephthalate film (TOYOBO CO., LTD. manufacture, name of product of the one side through easy adhesion process
" COSMOSHINE A4100 ", thickness: 50 μm) untreated face on, thickness is formed in a manner of identical with Examples and Comparative Examples
Degree is the hard conating of 200nm.Then, it using the easy bonding process face of Sandpapering polyethylene terephthalate film, and uses
Oil pen's (ZEBRA CO., LTD. manufacture, name of product " Mckee is black ") fills black.
Then, under conditions of measurement wavelength is 589nm, measuring temperature is 25 DEG C, ellipsometer (J.A.Woollam is used
Co., Inc. is manufactured, name of product " M-2000 "), according to JIS K7142 (2008), measure the refractive index of above-mentioned hard conating.It will
As a result it is shown in table 2.
(3) calculating of refringence
The refractive index of hard conating is subtracted by the refractive index of above-mentioned measured base material film, calculates refringence.Result is shown
In table 2.
[test example 2] (evaluation of interference fringe)
(1) visual valuation
The hard coat film that will be manufactured in Examples and Comparative Examples, via double-faced pressure-sensitive adhesive sheet (Lintec Corporation manufacture,
Name of product " OPTERIA MO-3006C ", thickness: 25 μm) it is attached to acrylic board (the MITSUBISHI RAYON of black
CO., LTD. is manufactured, name of product " Acrylight L502 ") on.At this point, with the base material film contact acrylic board of hard coat film
Mode is attached.
For obtained laminated body, under three wavelength fluorescent lamps, interference fringe is confirmed by visual observation from hard conating side, and
It is evaluated with benchmark below.Show the result in table 2.
Well (◎): being hardly visible interference fringe
Substantially good (zero): it is not readily apparent interference fringe
Slightly bad (△): it can be seen that interference fringe
Bad (×): it can clearly be seen that interference fringe
(2) measurement of maximum reflectivity difference
For laminated body obtained in (1), under the following conditions, the wave of spectrophotometric determination reflectance spectrum is used
Maximum reflectivity between a length of 500~600nm is poor.Show the result in table 2.
<determination condition>
Spectrophotometer: Shimadzu Corporation manufacture, name of product " UV, visible light near-infrared spectrophotometric
Count UV-3600 "
Sample retainer: Shimadzu Corporation manufacture, name of product " large-scale sample room MPC-3100 "
Integrating sphere: Shimadzu Corporation manufacture, name of product " integrating sphere auxiliary equipment ISR-3100 "
Incidence angle: 8 °
[test example 3] (evaluation of marresistance)
For the hard coating surface of the hard coat film manufactured in Examples and Comparative Examples, using the steel wool of #0000, with 125g
Weight/cm2Load carry out 10 double rubs, the range that length is 100mm, width is 20mm is set as trial stretch.Three
The scar item number in the trial stretch is confirmed under wavelength fluorescent lamp, and by visual observation with benchmark evaluation marresistance below.
Show the result in table 2.
Zero: scar item number is less than 20.
×: scar item number is 20 or more.
[test example 4] (mandrel test)
For the hard coat film manufactured in Examples and Comparative Examples, barrel core bending shaft testing machine (CORTEC company is used
Manufacture), the mandrel test of implementation basis JIS K5600-5-1.The hard conating of hard coat film is set as outside to carry out the mandrel
Test.Finding out not in the mandrel for generating a problem that cracking and flaking off on hard conating, diameter is the straight of the smallest mandrel
Diameter (minimum axle diameter).Show the result in table 2.
[test example 5] (resistance to bend(ing) test)
For the hard coat film manufactured in Examples and Comparative Examples, durability-testing machines (YUASA SYSTEM Co., Ltd. is used
Manufacture, name of product " plane body zero load U-shaped elongation test machine DLDMLH-FS "), and hard conating is set as outside, with 60mm/s
Test speed, test number (TN) (round-trip number) and bending diameter are made various changes, to make its alternating bending.Then, really
Recognize that hard conating spalling, hard coat film albefaction bending trace etc. whether occurs is bad, and with benchmark evaluation bending resistance below
Qu Xing.Show the result in table 2.
◎: even if bending diameter be 5mm hereinafter, and test number (TN) be do not generate for 20,000 times or more yet it is bad.
Zero: even if bending diameter be 10mm hereinafter, and test number (TN) be do not generate for 20,000 times or more yet it is bad.
×: not up to zero benchmark.
[test example 6] (evaluation of image definition)
For the hard coat film manufactured in Examples and Comparative Examples, image definition analyzer (Suga Test is used
The manufacture of Instruments Co., Ltd., name of product " ICM-10P "), according to JIS K7374, measurement is used as image definition
The aggregate value of 5 kinds of slits (slit width: 0.125mm, 0.25mm, 0.5mm, 1mm and 2mm) of (%).Based on this as a result, by shadow
Image sharpness being evaluated as less than 400% ×, it will be evaluated as zero more than and less than 450% for 400%, will be 450% or more
Be evaluated as ◎.Show the result in table 2.
[test example 7] (evaluation of haze value)
For the hard coat film manufactured in Examples and Comparative Examples, haze meter (NIPPON DENSHOKU is used
INDUSTRIES Co., LTD manufacture, name of product " NDH5000 "), according to JIS K7136, measure haze value (%).Based on this
As a result, by haze value greater than 1% be evaluated as ×, will be 1% or less and be more than 0.5% to be evaluated as zero, will be 0.5% or less
Be evaluated as ◎.Show the result in table 2.
[test example 8] (evaluation of 60 ° of glossiness)
For the hard coat film manufactured in Examples and Comparative Examples, gloss meter (NIPPON DENSHOKU is used
INDUSTRIES Co., LTD manufacture), according to JIS Z8741-1997, measure 60 ° of glossiness (Gloss value).Based on this as a result,
By 60 ° of glossiness being evaluated as less than 100% ×, zero will be evaluated as more than and less than 140% for 100%, will for 140% with
On be evaluated as ◎.Show the result in table 2.
[table 1]
It is clear that by table 2, the marresistance and optical characteristics of hard coat film obtained in embodiment are excellent, while resist bending
Property is excellent, and then is not likely to produce interference fringe.
Industrial applicibility
Hard coat film of the invention is suitable as constituting by the flexible member of the flexible display of alternating bending, is particularly suitable for making
For positioned at the protective film on surface layer.
Description of symbols
1,1A, 1B: hard coat film；2: base material film；3: hard conating；4: the second hard conatings；5: adhering agent layer.
Claims (6)
1. a kind of hard coat film has the hard conating of base material film at least one main surface side for being layered in the base material film, special
Sign is,
The base material film is polyimide film,
The difference of the refractive index of the refractive index of the polyimide film and the hard conating with absolute value be calculated as 0.04 hereinafter,
The hard conating with a thickness of 0.5 μm or more, 10 μm or less.
2. hard coat film according to claim 1, which is characterized in that the refractive index of the hard conating is 1.40 or more, 1.85
Below.
3. hard coat film according to claim 1 or 2, which is characterized in that the polyimide film with a thickness of 5 μm or more,
300 μm or less.
4. hard coat film described in any one of claim 1 to 3, which is characterized in that the hard conating is by making containing active
Material made of the solidification of the composition of energy ray-curable ingredient and transition metal oxide particle is formed.
5. hard coat film according to any one of claims 1 to 4, which is characterized in that as the soft of composition flexible display
Property component and used.
6. hard coat film according to any one of claims 1 to 5, which is characterized in that at least one of the base material film
Main surface side is laminated with adhering agent layer.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2016/074566 WO2018037488A1 (en) | 2016-08-23 | 2016-08-23 | Hard coat film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109642964A true CN109642964A (en) | 2019-04-16 |
Family
ID=61245685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680088557.2A Pending CN109642964A (en) | 2016-08-23 | 2016-08-23 | Hard coat film |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP6291128B1 (en) |
| KR (1) | KR102610461B1 (en) |
| CN (1) | CN109642964A (en) |
| TW (1) | TWI773671B (en) |
| WO (1) | WO2018037488A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10985344B2 (en) | 2017-10-27 | 2021-04-20 | Applied Materials, Inc. | Flexible cover lens films |
| US11579339B2 (en) | 2018-05-10 | 2023-02-14 | Applied Materials, Inc. | Replaceable cover lens for flexible display |
| US11789300B2 (en) | 2019-06-26 | 2023-10-17 | Applied Materials, Inc. | Flexible multi-layered cover lens stacks for foldable displays |
| US11988810B2 (en) | 2018-08-14 | 2024-05-21 | Applied Materials, Inc. | Multi-layer wet-dry hardcoats for flexible cover lens |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7070128B2 (en) * | 2018-06-15 | 2022-05-18 | 大日本印刷株式会社 | A method for manufacturing a laminate, a polyimide film, a surface material for a display, a touch panel member, a liquid crystal display device, an organic electroluminescence display device, a polyimide film, a method for manufacturing a laminate, and a method for manufacturing a surface material for a display. |
| KR102274527B1 (en) * | 2018-11-20 | 2021-07-07 | 주식회사 엘지화학 | A laminate structure for manufacturing flexible device and a process for manufacturing flexible device using same |
| KR20200066828A (en) | 2018-12-03 | 2020-06-11 | 에스케이아이이테크놀로지주식회사 | Hard coating film and method of preparing the same |
| KR102621314B1 (en) * | 2018-12-26 | 2024-01-04 | 동우 화인켐 주식회사 | Hard coating film and flexible display window including the same |
| JP7190458B2 (en) * | 2020-01-08 | 2022-12-15 | 株式会社ダイセル | anti-reflection film |
| KR102341198B1 (en) | 2020-04-02 | 2021-12-20 | 동우 화인켐 주식회사 | Hard coating film and image display device using the same |
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| WO2009116363A1 (en) * | 2008-03-21 | 2009-09-24 | 株式会社 きもと | Film for optical use, laminate, and touch panel |
| JP2014126761A (en) * | 2012-12-27 | 2014-07-07 | Mitsubishi Rayon Co Ltd | Laminate and manufacturing method therefor |
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| JP2016002764A (en) | 2014-06-19 | 2016-01-12 | 日本合成化学工業株式会社 | Laminate, use thereof, and production method thereof |
| JP6579110B2 (en) * | 2014-10-17 | 2019-09-25 | 三菱瓦斯化学株式会社 | Polyimide resin composition, polyimide film and laminate |
| JP6482977B2 (en) * | 2014-11-10 | 2019-03-13 | 住友化学株式会社 | Laminated film for flexible device, optical member, display member, front plate, and method for producing laminated film for flexible device |
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2016
- 2016-08-23 CN CN201680088557.2A patent/CN109642964A/en active Pending
- 2016-08-23 WO PCT/JP2016/074566 patent/WO2018037488A1/en active Application Filing
- 2016-08-23 KR KR1020197005851A patent/KR102610461B1/en active IP Right Grant
- 2016-08-23 JP JP2017507030A patent/JP6291128B1/en active Active
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| JP2005096298A (en) * | 2003-09-25 | 2005-04-14 | Dainippon Printing Co Ltd | Optical film and optical display device equipped with it |
| WO2016076243A1 (en) * | 2014-11-10 | 2016-05-19 | 住友化学株式会社 | Resin film, laminated film, optical member, display member, front plate, and method for producing laminated film |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10985344B2 (en) | 2017-10-27 | 2021-04-20 | Applied Materials, Inc. | Flexible cover lens films |
| US11758757B2 (en) | 2017-10-27 | 2023-09-12 | Applied Materials, Inc. | Flexible cover lens films |
| US11579339B2 (en) | 2018-05-10 | 2023-02-14 | Applied Materials, Inc. | Replaceable cover lens for flexible display |
| US11988810B2 (en) | 2018-08-14 | 2024-05-21 | Applied Materials, Inc. | Multi-layer wet-dry hardcoats for flexible cover lens |
| US11789300B2 (en) | 2019-06-26 | 2023-10-17 | Applied Materials, Inc. | Flexible multi-layered cover lens stacks for foldable displays |
| US11934056B2 (en) | 2019-06-26 | 2024-03-19 | Applied Materials, Inc. | Flexible multi-layered cover lens stacks for foldable displays |
| US11940683B2 (en) | 2019-06-26 | 2024-03-26 | Applied Materials, Inc. | Flexible multi-layered cover lens stacks for foldable displays |
| US11940682B2 (en) | 2019-06-26 | 2024-03-26 | Applied Materials, Inc. | Flexible multi-layered cover lens stacks for foldable displays |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201808643A (en) | 2018-03-16 |
| TWI773671B (en) | 2022-08-11 |
| KR20190038590A (en) | 2019-04-08 |
| KR102610461B1 (en) | 2023-12-06 |
| JPWO2018037488A1 (en) | 2018-08-23 |
| JP6291128B1 (en) | 2018-03-14 |
| WO2018037488A1 (en) | 2018-03-01 |
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