WO2018212544A1 - Film de revêtement dur et appareil d'affichage d'image comprenant ledit film de revêtement - Google Patents

Film de revêtement dur et appareil d'affichage d'image comprenant ledit film de revêtement Download PDF

Info

Publication number
WO2018212544A1
WO2018212544A1 PCT/KR2018/005532 KR2018005532W WO2018212544A1 WO 2018212544 A1 WO2018212544 A1 WO 2018212544A1 KR 2018005532 W KR2018005532 W KR 2018005532W WO 2018212544 A1 WO2018212544 A1 WO 2018212544A1
Authority
WO
WIPO (PCT)
Prior art keywords
hard coating
acrylate
meth
coating layer
film
Prior art date
Application number
PCT/KR2018/005532
Other languages
English (en)
Korean (ko)
Inventor
임거산
마동희
송관욱
Original Assignee
동우화인켐 주식회사
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 동우화인켐 주식회사 filed Critical 동우화인켐 주식회사
Publication of WO2018212544A1 publication Critical patent/WO2018212544A1/fr

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
    • 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
    • B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
    • 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

Definitions

  • the present invention relates to a hard coat film and an image display device including the same.
  • the hard coating film is also applied to the lower polarizing film to prevent scratches of the lower polarizing film during the panel process as well as the outermost layer of the polarizing film.
  • Conventional hard coating film is commercialized about 3H pencil hardness.
  • pencil hardness of about 7H to 9H is obtained.
  • the conventional hard coating composition is applied to a plastic substrate, since the plastic substrate having a weak hardness is easily deformed by external pressure, the hard coating layer formed on the plastic substrate is also modified accordingly, so that the hard coating film has a pencil hardness of about 3H. There is a problem that can only be obtained.
  • Korean Patent Laid-Open Publication No. 10-2008-0055698 includes a rigid layer comprising a thermosetting resin and a photocurable resin in a weight ratio of 6-9: 1-4 on one surface of a plastic base film. And a hard coat optical film having improved hardness by forming a hard coat layer on the rigid layer.
  • a hard coat optical film having improved hardness by forming a hard coat layer on the rigid layer.
  • Korean Patent Publication No. 10-2014-0104175 discloses an oligosiloxane comprising at least one alicyclic epoxy group per molecule; And it is described with respect to the flexible hard-coating film formed by using an ion-polymerizable siloxane hard coating composition comprising an ion polymerization initiator, in this case, the process is complicated because the material must be separately synthesized in order to prepare a hard coating composition, There is a problem that unit prices rise.
  • Patent Document 1 Republic of Korea Patent Publication No. 10-2008-0055698 (2008.06.19.)
  • Patent Document 2 Republic of Korea Patent Publication No. 10-2014-0104175 (2014.08.28.)
  • An object of the present invention is to provide a hard coat film and an image display apparatus including the same, which are applicable to a flexible image display apparatus having excellent hardness and bending resistance.
  • Hard coating film of the present invention for achieving the above object is a substrate; And first hard coating layers laminated on both surfaces of the substrate. And a second hard coat layer, wherein the pencil hardness measured at the side of the first hard coat layer is 5H or more, and the elongation of the second hard coat layer is 1 to 10%.
  • the image display device of the present invention is characterized in that it comprises the above-described hard coating film.
  • Hard coating film according to the present invention is excellent in hardness by including the first hard coating layer of high hardness, and includes a second hard coating layer having an elongation of 1 to 10% is also excellent in flex resistance.
  • the image display device includes the aforementioned hard coat film, which is excellent in hardness and flexible.
  • a member when a member is located "on" another member, this includes not only when one member is in contact with another member but also when another member exists between the two members.
  • Hard coating film according to an aspect of the present invention is a substrate; And first hard coating layers laminated on both surfaces of the substrate. And a second hard coat layer, wherein the pencil hardness measured at the side of the first hard coat layer is 5H or more, and the elongation of the second hard coat layer is 1 to 10%, thereby providing excellent hardness and flex resistance.
  • the pencil hardness measured at the side of the first hard coat layer is 5H or more, and the elongation of the second hard coat layer is 1 to 10%, thereby providing excellent hardness and flex resistance.
  • there is an advantage that can be applied to the flexible image display device is excellent.
  • the hard coat film in order for the hard coat film to be applied to the flexible image display device, bending occurs in the hard coat film, which causes a phenomenon in which one surface of the hard coat film is stretched.
  • the second hard coating layer having an elongation of 1 to 10% to the surface to be stretched, it is possible to prevent the occurrence of cracks or the like generated during stretching.
  • the said elongation is 1.5 to 10%.
  • the hard coat film according to one aspect of the invention comprises a substrate.
  • the substrate may be used without particular limitation as long as it is a substrate used in the art, and specifically, a film excellent in transparency, mechanical strength, thermal stability, moisture shielding, isotropy, and the like may be used. More specifically, Polyester-based resin, such as polyethylene terephthalate, polyethylene isophthalate, polyethylene naphthalate, polybutylene terephthalate; Cellulose resins such as diacetyl cellulose and triacetyl cellulose; Polycarbonate resins; Acrylic resins such as polymethyl (meth) acrylate and polyethyl (meth) acrylate; Styrene resins such as polystyrene and acrylonitrile-styrene copolymers; Polyolefin-based resins such as polyethylene, polypropylene, cyclo-based or norbornene-structured polyolefins, ethylene-propylene copolymers; Vinyl chloride-based resins; Amide resins such as nylon and aromatic polyamides
  • thermosetting resin or an ultraviolet curable resin such as (meth) acrylic, urethane, acrylic urethane, epoxy, silicone, or the like may be used. According to one embodiment of the present invention, it is excellent in durability against repeated bending.
  • a polyimide resin may be used that can be more easily applied to a flexible image display device.
  • the hard coat film according to an embodiment of the present invention includes a second hard coat layer having a pencil hardness of 5H or more and an elongation of 1 to 10%, measured on the first hard coat layer side, on both sides of the substrate, respectively.
  • the elongation of the second hard coat layer is preferably 1 to 10%, more preferably 1.5 to 10%. If less than 1% may cause cracks in the bending test, if more than 10% may not exhibit sufficient hardness there is a fear that the pencil hardness of the entire film is lowered.
  • the Martens hardness of the first hard coating layer may be 350N / mm 2 or more.
  • Each of the components of the hard coating composition for forming the first hard coating layer and the second hard coating layer described above may be the same as or different from each other, and the structures are not particularly limited in the present invention and are used in the art. Can be used without limitation.
  • the hard coating composition may include at least one selected from the group consisting of a light transmitting resin, a photoinitiator, a solvent, and an additive.
  • the light transmissive resin may mean a photocurable resin, and may include a photocurable (meth) acrylate oligomer or a monomer, but is not limited thereto.
  • photocurable (meth) acrylate oligomer epoxy (meth) acrylate, urethane (meth) acrylate, etc. are normally used, and urethane (meth) acrylate is more preferable.
  • Urethane (meth) acrylate can manufacture the polyfunctional (meth) acrylate which has a hydroxyl group in a molecule
  • the (meth) acrylate having a hydroxy group in the molecule examples include 2-hydroxyethyl (meth) acrylate, 2-hydroxyisopropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, and capro It may be selected from one or more selected from the group consisting of lactone ring-opened hydroxyacrylate, pentaerythritol tri / tetra (meth) acrylate mixture, and dipentaerythritol penta / hexa (meth) acrylate mixture.
  • the compound having an isocyanate group include 1,4-diisocyanatobutane, 1,6-diisocyanatohexane, 1,8-diisocyanatooctane, 1,12-diisocyanatododecane, 1, 5-diisocyanato-2-methylpentane, trimethyl-1,6-diisocyanatohexane, 1,3-bis (isocyanatomethyl) cyclohexane, trans-1,4-cyclohexene diisocyanate, 4,4 '-Methylenebis (cyclohexyl isocyanate), isophorone diisocyanate, toluene-2,4-diisocyanate, toluene-2,6-diisocyanate, xylene-1,4-diisocyanate, tetramethylxylene-1, 3-diisocyanate, 1-chloromethyl-2,4-diisocyanate,
  • the monomer is usually used, having a unsaturated group such as a (meth) acryloyl group, a vinyl group, a styryl group, an allyl group, and the like in a photocurable functional group, and a (meth) acryloyl group is more preferred among them.
  • the monomer having a (meth) acryloyl group examples include neopentyl glycol acrylate, 1,6-hexanediol (meth) acrylate, propylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, Dipropylene glycol di (meth) acrylate, polyethylene glycol di (meth) acrylate, polypropylene glycol di (meth) acrylate, trimethylolpropane tri (meth) acrylate, trimethylol ethane tri (meth) acrylate, 1 , 2,4-cyclohexane tetra (meth) acrylate, pentaglycerol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, pentaerythritol tri (meth) acrylate, dipentaerythritol tri (meth) acrylate , Dipentaeryth
  • the photocurable (meth) acrylate oligomers to monomers which are the above-mentioned translucent resins may be used alone or in combination of two or more.
  • the content of the translucent resin is not particularly limited in the present invention, but may be included in an amount of 1 to 80 parts by weight based on 100 parts by weight of the total composition for forming a hard coating layer including the same.
  • the content of the translucent resin is included in the above range, the hardness is improved, there is an advantage that can prevent the occurrence of curling.
  • the photoinitiator is not particularly limited in the present invention, as long as it is used in the art can be used without limitation. Specifically, 2-methyl-1- [4- (methylthio) phenyl] 2-morpholinepropanone-1, diphenylketone benzyldimethyl ketal, 2-hydroxy-2-methyl-1-phenyl-1-one , 4-hydroxycyclophenyl ketone, dimethoxy-2-phenylatetophenone, anthraquinone, fluorene, triphenylamine, carbazole, 3-methylacetophenone, 4-knoloacetophenone, 4,4-dimeth Oxyacetophenone, 4,4-diaminobenzophenone, 1-hydroxycyclohexylphenyl ketone, benzophenone, and the like, but are not limited thereto.
  • the content of the photoinitiator is not particularly limited in the present invention, but may be included in an amount of 0.1 to 10 parts by weight based on 100 parts by weight of the total composition for forming a hard coating layer including the same.
  • the curing rate can be improved, there is an advantage that can prevent the occurrence of cracks due to over curing.
  • the solvent is not particularly limited in the present invention, and those used in the art can be used without limitation. Specifically, alcohols (methanol, ethanol, isopropanol, butanol, methylcellulose, ethyl solusorb, etc.), ketones (methyl ethyl ketone, methyl butyl ketone, methyl isobutyl ketone, diethyl ketone, dipropyl ketone, cyclo Hexanone, etc.), hexane-based (hexane, heptane, octane, etc.), benzene-based (benzene, toluene, xylene, etc.) and the like, but is not limited thereto.
  • alcohols methanol, ethanol, isopropanol, butanol, methylcellulose, ethyl solusorb, etc.
  • ketones methyl ethyl ketone, methyl butyl ketone, methyl iso
  • the content of the solvent is not particularly limited in the present invention, it may be included 10 to 95 parts by weight based on 100 parts by weight of the total composition for forming a hard coating layer comprising the same.
  • the solvent is included in the above range, it is possible to improve the workability by appropriately adjusting the viscosity, there is an advantage that can shorten the curing time.
  • the additive is not particularly limited in the present invention, but may include, for example, inorganic oxide fine particles, a leveling agent, and the like.
  • the inorganic oxide fine particles are uniformly formed in the coating film, thereby improving mechanical properties such as wear resistance, scratch resistance, and pencil hardness.
  • the inorganic oxide fine particles may be used having a particle size of 100nm or less, in this case it is possible to prevent the phenomenon of aggregation in the composition to enable the formation of a uniform coating film to prevent the mechanical properties from being lowered.
  • the inorganic oxide fine particles may include, but are not limited to, silicon oxide (silica), titanium oxide, aluminum oxide, zinc oxide, tin oxide, zirconium oxide, and the like.
  • the leveling agent may include a silicone leveling agent, a fluorine leveling agent, an acrylic leveling agent, and the like, but is not limited thereto. As such, when the leveling agent is included together, there is an advantage in that smoothness and coating property can be imparted at the time of forming the coating film.
  • the hard coat film according to an aspect of the present invention includes a substrate; And first hard coating layers laminated on both surfaces of the substrate. And a second hard coat layer, wherein the pencil hardness measured at the side of the first hard coat layer is 5H or more, and the elongation of the second hard coat layer is 1 to 10%, thereby providing excellent hardness and flex resistance.
  • the pencil hardness measured at the side of the first hard coat layer is 5H or more, and the elongation of the second hard coat layer is 1 to 10%, thereby providing excellent hardness and flex resistance.
  • Another aspect of the present invention is an image display apparatus including the above-described hard coating film.
  • the image display device is not particularly limited, and examples thereof include liquid crystal display (LCD), field emission display (FED), plasma display (PDP), organic light emitting device (OLED), flexible display, and the like. Can be.
  • LCD liquid crystal display
  • FED field emission display
  • PDP plasma display
  • OLED organic light emitting device
  • flexible display and the like. Can be.
  • the image display apparatus includes a hard coating film including a second hard coating layer having an elongation of 1 to 10%, and thus has an advantageous advantage when applied to the flexible image display apparatus.
  • the hard coating composition of Preparation Example 1 was coated on a 50 ⁇ m transparent polyimide film to have a dry film thickness of 10 ⁇ m, and the solvent was dried at 80 ° C. for 2 minutes.
  • the dried film was irradiated with UV with an accumulated light amount of 400 mJ / cm 2 under a nitrogen atmosphere to form a first hard coating layer (Matens hardness 534 N / mm 2 ).
  • the hard coating composition of Preparation Example 4 was coated on the back surface of the first hard coating layer to have a dry film thickness of 10 ⁇ m, and the solvent was dried at 80 ° C. for 2 minutes.
  • a hard coat film was prepared by irradiating UV light with a cumulative amount of light of 400 mJ / cm 2 under a nitrogen atmosphere to form a second hard coat layer.
  • Example 2 Using the same method as in Example 1, using the configuration of the hard coating composition shown in Table 1 to prepare a hard coating film of the Example and Comparative Example, respectively.
  • Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 First hard coating layer Preparation Example 1 Preparation Example 2 Preparation Example 3 Preparation Example 1 Preparation Example 1 Preparation Example 4 Preparation Example 4 materials Polyimide Polyimide Polyimide Polyimide Polyimide Polyimide Polyimide 2nd hard coating layer Preparation Example 4 Preparation Example 4 Preparation Example 4 Preparation Example 1 Preparation Example 5 Preparation Example 4 Preparation Example 1
  • the hard coating film was fixed on the glass so that the first hard coating layer faced upward, and measured at 1 mN using a nanoindenter (Fischer).
  • the Martens hardness of the second hard coating layer surface was measured in the same manner as above except that the second hard coating layer surface is fixed to the upper surface, the results are shown in Table 2 below.
  • the hard coating film of the above Examples and Comparative Examples the hard coating film is fixed on the glass so that the first hard coating layer surface is directed to the upper surface, and using a pencil hardness tester (PHT, KKK), pencil hardness at 1 kg load Measured. Using a pencil of the same hardness, was tested 5 times in 1cm length, the hardness that does not occur even after four or more times are described in Table 2 as the hardness of the pencil.
  • PHT pencil hardness tester
  • Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Pencil Hardness (1st Hard Coating Layer) 8H 7 H 7 H 8 H 4 H 4 H 4 H 4 H Martens hardness (first hard coating layer) 534 (N / mm 2 ) 380 (N / mm 2 ) 420 (N / mm 2 ) 534 (N / mm 2 ) 534 (N / mm 2 ) 320 (N / mm 2 ) 320 (N / mm 2 ) Elongation (Second Hard Coating Layer) 2.4% 2.4% 2.4% 0.6% 3.3% 2.4% 0.6% Martens hardness (second hard coating layer) 320 (N / mm 2 ) 320 (N / mm 2 ) 320 (N / mm 2 ) 534 (N / mm 2 ) 135 (N / mm 2 ) 320 (N / mm 2 ) 534 (N / mm 2 )

Landscapes

  • Laminated Bodies (AREA)
  • Surface Treatment Of Optical Elements (AREA)

Abstract

La présente invention concerne un film de revêtement dur présentant une résistance et une endurance au pliage excellentes, et un appareil d'affichage d'image comprenant ledit film de revêtement dur, le film de revêtement dur comprenant : un substrat ; et une première couche de revêtement dur et une seconde couche de revêtement dur, qui sont respectivement stratifiées sur les deux surfaces du substrat, la dureté mesurée sur le premier côté de couche de revêtement dur étant supérieure ou égale à 5H et l'allongement de la seconde couche de revêtement dur étant d'au moins 1 à 10 %.
PCT/KR2018/005532 2017-05-19 2018-05-15 Film de revêtement dur et appareil d'affichage d'image comprenant ledit film de revêtement WO2018212544A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2017-0062124 2017-05-19
KR20170062124 2017-05-19

Publications (1)

Publication Number Publication Date
WO2018212544A1 true WO2018212544A1 (fr) 2018-11-22

Family

ID=64274345

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2018/005532 WO2018212544A1 (fr) 2017-05-19 2018-05-15 Film de revêtement dur et appareil d'affichage d'image comprenant ledit film de revêtement

Country Status (1)

Country Link
WO (1) WO2018212544A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140027027A (ko) * 2012-08-23 2014-03-06 주식회사 엘지화학 하드코팅 필름
KR20150023483A (ko) * 2012-06-22 2015-03-05 소마아루 가부시끼가이샤 에너지선 경화형 수지 조성물, 경화물 및 적층체
KR20170001297A (ko) * 2015-06-26 2017-01-04 동우 화인켐 주식회사 적층 필름 및 이를 포함하는 화상 표시 장치
KR20170006954A (ko) * 2015-07-10 2017-01-18 동우 화인켐 주식회사 하드코팅 필름, 이를 포함하는 편광판 및 화상 표시 장치
KR20170103644A (ko) * 2016-03-04 2017-09-13 동우 화인켐 주식회사 하드코팅필름

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150023483A (ko) * 2012-06-22 2015-03-05 소마아루 가부시끼가이샤 에너지선 경화형 수지 조성물, 경화물 및 적층체
KR20140027027A (ko) * 2012-08-23 2014-03-06 주식회사 엘지화학 하드코팅 필름
KR20170001297A (ko) * 2015-06-26 2017-01-04 동우 화인켐 주식회사 적층 필름 및 이를 포함하는 화상 표시 장치
KR20170006954A (ko) * 2015-07-10 2017-01-18 동우 화인켐 주식회사 하드코팅 필름, 이를 포함하는 편광판 및 화상 표시 장치
KR20170103644A (ko) * 2016-03-04 2017-09-13 동우 화인켐 주식회사 하드코팅필름

Similar Documents

Publication Publication Date Title
KR101415838B1 (ko) 하드코팅 조성물
KR101501686B1 (ko) 하드코팅 필름
KR101415841B1 (ko) 하드코팅 필름
KR102031556B1 (ko) 적층 필름 및 이를 포함하는 화상 표시 장치
EP3042928B1 (fr) Film plastique
KR101451848B1 (ko) 하드코팅 필름의 제조방법
KR101854524B1 (ko) 하드코팅 필름 및 이를 구비한 플렉시블 디스플레이
KR101578914B1 (ko) 플라스틱 필름
KR20200008007A (ko) 하드코팅필름
EP3040200B1 (fr) Film stratifié en plastique
KR101443845B1 (ko) 하드코팅 필름을 포함하는 편광판
KR101470464B1 (ko) 하드코팅 필름
KR101801471B1 (ko) 하드코팅 필름 및 이를 이용한 화상표시장치
WO2016208999A1 (fr) Film de revêtement dur pour dispositif d'affichage et dispositif d'affichage le comprenant
WO2018143554A1 (fr) Film de revêtement dur et fenêtre d'affichage souple comprenant un capteur tactile le comprenant
KR20160103682A (ko) 폴더블 하드코팅 필름의 제조방법
KR20130135156A (ko) 하드코팅 필름 및 이의 제조방법
WO2018155857A1 (fr) Stratifié de fenêtre souple et dispositif d'affichage d'images le comprenant
KR101436616B1 (ko) 하드코팅 필름
KR20170075663A (ko) 하드코팅 필름 및 이를 구비한 플렉시블 디스플레이
WO2014092388A1 (fr) Film de revêtement dur hybride organique-inorganique, et plaque de polarisation le comprenant
WO2016052883A1 (fr) Plaque de polarisation et dispositif d'affichage d'images doté de celle-ci
KR102031802B1 (ko) 하드코팅 필름 및 이를 구비한 디스플레이 윈도우
WO2014051303A1 (fr) Film antireflet et plaque polarisante et dispositif d'affichage l'utilisant
KR20200008648A (ko) 하드코팅필름

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18802558

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18802558

Country of ref document: EP

Kind code of ref document: A1