WO2016085072A1 - Composition de couche de protection de polariseur, couche de protection de polariseur fabriquée à partir de celle-ci, plaque polarisante comprenant ladite couche et dispositif d'affichage optique comprenant celle-ci - Google Patents

Composition de couche de protection de polariseur, couche de protection de polariseur fabriquée à partir de celle-ci, plaque polarisante comprenant ladite couche et dispositif d'affichage optique comprenant celle-ci Download PDF

Info

Publication number
WO2016085072A1
WO2016085072A1 PCT/KR2015/006035 KR2015006035W WO2016085072A1 WO 2016085072 A1 WO2016085072 A1 WO 2016085072A1 KR 2015006035 W KR2015006035 W KR 2015006035W WO 2016085072 A1 WO2016085072 A1 WO 2016085072A1
Authority
WO
WIPO (PCT)
Prior art keywords
protective layer
polarizer
polarizer protective
weight
meth
Prior art date
Application number
PCT/KR2015/006035
Other languages
English (en)
Korean (ko)
Inventor
유미연
김현영
이도헌
이태현
한인천
Original Assignee
삼성에스디아이 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 삼성에스디아이 주식회사 filed Critical 삼성에스디아이 주식회사
Publication of WO2016085072A1 publication Critical patent/WO2016085072A1/fr

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
    • C09D167/06—Unsaturated polyesters having carbon-to-carbon unsaturation
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C09D133/04—Homopolymers or copolymers of esters
    • C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C09D133/062—Copolymers with monomers not covered by C09D133/06
    • C09D133/066—Copolymers with monomers not covered by C09D133/06 containing -OH groups
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C09D133/04—Homopolymers or copolymers of esters
    • C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C09D133/08—Homopolymers or copolymers of acrylic acid esters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C09D133/04—Homopolymers or copolymers of esters
    • C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C09D133/10—Homopolymers or copolymers of methacrylic acid esters
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements

Definitions

  • Embodiments of the present invention relate to a polarizer protective layer composition, a polarizer protective layer prepared therefrom, a polarizing plate including the same, and an optical display device including the same.
  • a polarizing plate In a liquid crystal display device, an image is formed by arranging polarizing plates on both sides of a glass substrate forming a surface of a liquid crystal panel.
  • a polarizing plate generally uses a polyvinyl alcohol adhesive as a transparent protective film for polarizers using triacetyl cellulose (TAC) on one or both surfaces of a polarizer made of a polyvinyl alcohol (PVA) film and dichroic materials such as iodine. The one bonded by is used.
  • TAC triacetyl cellulose
  • PVA polyvinyl alcohol
  • a polarizing plate including a transparent protective film is used only on one side of the polarizer for thinning purposes.
  • the use environment of devices including polarizing plates is diversified, and durability in harsh environments of low temperature and high temperature is required.
  • the polarizing plate in which the protective film or the protective layer was formed in at least one of the polarizers is proposed.
  • An object of the present invention is to provide a polarizer protective layer composition having excellent water resistance and preventing in-plane cracking of a polarizer under thermal shock conditions, a polarizer protective layer prepared therefrom, a polarizing plate including the same, and an optical display device including the same. will be.
  • Another object of the present invention is to provide a polarizer protective layer composition having excellent adhesion and cutting property, a polarizer protective layer prepared therefrom, a polarizing plate including the same, and an optical display device including the same.
  • One aspect of the present invention is a composition
  • a composition comprising (A) a polyester (meth) acrylate, (B) a (meth) acrylate having a hydroxyl group and a (C) isocyanurate-based compound, the composition after curing A polarizer protective layer composition having a glass transition temperature (Tg) of about 50 ° C. or more.
  • Tg glass transition temperature
  • the polarizer protective layer composition comprises (A) about 25% to about 80% by weight of polyester (meth) acrylate, (B) about 5% to about 60% by weight of (meth) acrylate having a hydroxyl group, and (C) about 5% to about 30% by weight of the isocyanurate-based compound.
  • the polarizer protective layer composition may include about 0.1 parts by weight to about 10 parts by weight of the photosensitizer (D) and about (E) radical photopolymerization based on 100 parts by weight of the total of (A), (B), and (C). It may further comprise one or more of about 0.1 parts by weight to about 10 parts by weight of initiator.
  • Another aspect of the present invention relates to a polarizer protective layer comprising a cured product of the polarizer protective layer composition described above.
  • the polarizer protective layer of one embodiment may have a modulus at about 25 ° C. of about 1,000 MPa to about 2,500 MPa.
  • the polarizer protective layer may have a modulus at 25 ° C. of more than about 2,000 MPa and about 2,500 MPa or less.
  • the polarizer protective layer may have a thickness of about 1 ⁇ m to about 10 ⁇ m.
  • Another aspect of the invention is a polarizer; And a polarizer protective layer formed on one side or both sides of the polarizer, wherein the polarizer protective layer comprises (A) polyester (meth) acrylate, (B) hydroxyl group (meth) acrylate and (C) isocyanate.
  • a cured product of the polarizer protective layer composition comprising an anurate-based compound, wherein the glass transition temperature (Tg) of the polarizer protective layer relates to a polarizing plate of about 50 °C or more.
  • the polarizing plate of one embodiment may include a polarizer protective layer only on one surface of the polarizer, and may further include an optical film formed on the rear surface of the polarizer.
  • Another aspect of the present invention relates to an optical display device including the polarizing plate described above.
  • Embodiments of the present invention not only can prevent in-plane cracking of the polarizer under excellent thermal resistance and thermal shock conditions, the polarizer protective layer composition having excellent adhesion and cutting properties, a polarizer protective layer prepared therefrom, and a polarizing plate comprising the same It is effective to provide an optical display device.
  • FIG. 1 is a cross-sectional view of a polarizing plate according to one embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of a polarizer according to another embodiment of the present invention.
  • FIG 3 is a cross-sectional view of a polarizing plate according to another embodiment of the present invention.
  • FIG. 4 is a cross-sectional view of an optical display device according to an embodiment of the present invention.
  • 'upper' and 'lower' are defined on the basis of the drawings, and depending on the viewing time, 'upper' and 'lower', 'lower' may be changed to 'upper', and ((meth) acrylic 'Rate' can mean acrylate and / or methacrylate.
  • the 'compound' may include a monomer, an oligomer, a resin, and the like.
  • 'modulus' is a polarizer protective layer composition
  • a release film for example, polyethylene terephthalate film
  • roughness 400 mw / cm2 light amount 1,000 mJ / cm2 to remove the release film
  • An adhesive film is prepared, and the prepared adhesive film is measured with respect to a specimen cut to a width x length (10 mm x 100 mm).
  • the specimen is fixed to DMA (Q800, TA Instruments), the analysis mode Tension Film, amplitude 25 ⁇ m, preload 0.5 N, temperature increase rate 10 °C / min, temperature range -50 °C ⁇ 100 °C, Measure at 1 Hz, strain 0.5%, and measure the storage modulus at 25 ° C.
  • the 'glass transition temperature' of the adhesive film is a polarizer protective layer composition
  • a release film for example, polyethylene terephthalate film
  • the prepared adhesive film is measured with respect to the specimen cut to the horizontal x vertical (10 mm x 100 mm).
  • the specimen may be measured under a heating condition consisting of 1st run and 2nd run under a nitrogen atmosphere by using a Discovery DSC (TA Instruments).
  • the 1st run is raised to 200 °C at a heating rate of 20 °C / min and then cooled to 0 °C
  • the second run is the inflection point of the curve obtained after the temperature is raised to 200 °C at a heating rate of 10 °C / min Determine the transition temperature.
  • the polarizer protective layer composition of this invention is a composition containing polyester (meth) acrylate (A), (B) hydroxyl group (B), and (C) isocyanurate type compound (C)
  • the composition has a glass transition temperature (Tg) of about 50 ° C. or more after curing.
  • the glass transition temperature (Tg) after curing of the polarizer protective layer composition may be about 50 ° C. or more, specifically about 57 ° C. to about 200 ° C., more specifically about 65 ° C. to about 150 ° C. Within this range, the polarizer protective layer composition has an effect of preventing in-plane cracking of the polarizer under thermal shock conditions with increasing water resistance.
  • Polyester (meth) acrylates (A) can be prepared from (meth) acrylic acid, polycarboxylic acid and polyol in several steps or in one step.
  • the polyester (meth) acrylate (A) may include an ester (meth) acrylate polymer, a polyester-based (meth) acrylate oligomer or a mixture thereof.
  • the polyester-based (meth) acrylate oligomers produce polyester oligomers having hydroxyl groups at both ends by condensation of polyhydric carboxylic acid and polyhydric alcohols, for example, and esterification of hydroxyl groups of the polyester oligomers with (meth) acrylic acid.
  • the oligomer may be prepared by adding an alkylene oxide to polyhydric carboxylic acid, and esterifying terminal hydroxyl groups of the oligomer with (meth) acrylic acid.
  • the polyester (meth) acrylate (A) may be monofunctional or polyfunctional polyester (meth) acrylate.
  • the polyester (meth) acrylate (A) is tetrafunctional polyester acrylate (Tetrafunctional polyester acrylate, PS-420, Miwon Co., Ltd.), polyester acrylate oligomer (CN2303, SARTOMER) or combinations thereof.
  • the polyester (meth) acrylate (A) may be included in about 25% to about 80% by weight in the polarizer protective layer composition, specifically about 30% to about 70% by weight, more specifically about 40% by weight To about 60 weight percent.
  • the polarizer protective layer composition has an effect that the curing rate of the radical polymerization by the light energy is increased and the reactivity is excellent.
  • the hydroxyl group of the (meth) acrylate (B) which has a hydroxyl group contained in a polarizer protective layer composition has favorable compatibility with a polyvinyl alcohol (PVA) element, dichroism, such as a polyvinyl alcohol-type (PVA) film and iodine It improves the adhesion with the polarizer made of the material.
  • PVA polyvinyl alcohol
  • the (meth) acrylate (B) having a hydroxyl group is an alkyl group having 1 to 10 carbon atoms having at least one hydroxyl group, specifically, a (meth) acrylate having an alkyl group having 1 to 5 carbon atoms having at least one hydroxyl group, or 1 It may be a (meth) acrylate having an alicyclic group having 3 to 10 carbon atoms having at least two hydroxyl groups.
  • the (meth) acrylate (B) having a hydroxyl group may be monofunctional or polyfunctional (meth) acrylate (B).
  • monofunctional (meth) acrylates having one or more hydroxyl groups include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate , 4-hydroxyethyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, 6-hydroxyhexyl (meth) acrylate, 1,4-cyclohexanedimethanol mono (meth) acrylate, 1 -Chloro-2-hydroxypropyl (meth) acrylate, diethylene glycol mono (meth) acrylate, 1,6-hexanediol mono (meth) acrylate, 4-hydroxycyclopentyl (meth) acrylate, 4 Hydroxycyclohexyl (meth) acrylate and the like. These may be included alone or in combination of two or more.
  • the (meth) acrylate (B) having a hydroxyl group is about 5 to about 60 weight percent, specifically about 15 to about 55 weight percent, more specifically about 25 to about 45 weight percent in the polarizer protective layer composition May be included as a%.
  • the polarizer protective layer composition in the above range can improve the adhesion and cutting properties of the polarizer protective layer and the polarizer.
  • the polarizer protective layer composition includes a (C) isocyanurate-based compound represented by Formula 1 below.
  • R 1 , R 2 and R 3 are each independently an alkylene group of C1 to C10, and Y 1 , Y 2 and Y 3 are each independently a hydroxyl group or a (meth) acrylate group.
  • R 1 , R 2 and R 3 are specifically C1 to C5 alkylene groups.
  • Said (C) isocyanurate type compound is added to the compound of (meth) acrylate (B) which has a polyester (meth) acrylate (A) and a hydroxyl group, and has an effect in improving mechanical strength and heat resistance, and a polarizer By increasing the glass transition temperature (Tg) of the protective layer to improve the crack resistance of the polarizer under thermal shock conditions.
  • Tg glass transition temperature
  • the (C) isocyanurate-based compound may be included in the polarizer protective layer composition in an amount of about 5 wt% to about 30 wt%, specifically about 9 wt% to about 25 wt%.
  • the polarizer protective layer may be easily thinned, have excellent mechanical strength and heat resistance, and increase the glass transition temperature (Tg) of the polarizer protective layer to improve crack resistance of the polarizer under thermal shock conditions.
  • the polarizer protective layer formed of the polarizer protective layer composition may have a modulus of about 1,000 MPa to about 2,500 MPa.
  • the polarizer protective layer has a modulus of about 1,000 MPa or more, thereby being excellent in water resistance and preventing cracks in the plane of the polarizer under thermal shock conditions.
  • the modulus (modulus) is about 2,500 MPa or less, there is an excellent cutting property.
  • the polarizer protective layer formed of the composition may have a modulus greater than about 2,000 MPa and about 2,500 MPa or less.
  • the polarizer protective layer has a modulus of more than about 2,000 MPa, which is excellent in water resistance and prevents in-plane cracking of the polarizer under thermal shock conditions, and also has excellent barrier properties and excellent water resistance and thermal stability.
  • the modulus is about 2,500 MPa or less, and the cutting property is excellent.
  • the polarizer polarizer protective layer composition may include about 0.1 parts by weight to about 10 parts by weight of (D) photosensitizer and (E) about 0.1 parts by weight to about 10 parts by weight of 100 parts by weight of the polarizer protective layer composition. It may further comprise one or more of parts by weight.
  • the photosensitizer (D) generates a small amount of radicals to catalyze the curing reaction of the polarizer protective layer composition.
  • a photosensitizer (D) can improve the reactivity of an optical radical polymerization initiator by playing the role of catalyzing the initiation reaction of the radical photopolymerization initiator which hardens a (meth) acrylate type compound.
  • the photosensitizer (D) may include phosphorus, triazine, acetophenone, benzophenone, thioxanthone, benzoin, oxime or mixtures thereof. In embodiments, a thioxanthone-based photosensitizer may be included.
  • the photosensitizer (D) may be included in an amount of about 0.1 parts by weight to about 10 parts by weight, specifically about 0.5 parts by weight to about 3 parts by weight, based on 100 parts by weight of the total of (A), (B), and (C). have.
  • the (meth) acrylate compound is sufficiently cured under the light amount conditions of the step, and there is an effect of improving the reactivity of the radical photopolymerization initiator.
  • the radical photopolymerization initiator (E) catalyzes curing by generating radicals by light irradiation
  • the radical photopolymerization initiator (E) may include a conventional radical photopolymerization initiator.
  • the radical photopolymerization initiator (E) may include at least one of phosphorus, triazine, acetophenone, benzophenone, thioxanthone, benzoin and oxime.
  • the radical photopolymerization initiator (E) is included in an amount of about 0.1 part by weight to about 10 parts by weight, specifically about 0.1 part by weight to about 3 parts by weight, based on 100 parts by weight of the total of (A), (B), and (C). Can be. In the above range, the polymerization of the (meth) acrylate-based compound can be sufficiently performed, and the remaining amount of initiator can be prevented from remaining.
  • the polarizer protective layer composition according to the embodiments of the present invention is coated on one or both sides of the polarizer 110 to form the polarizer protective layers (130, 131, 132).
  • the polarizer 100 may form a polarizer protective layer 130 on one surface of the polarizer 110.
  • 1 shows a cross-sectional view of a polarizing plate 100 according to one embodiment of the present invention.
  • the polarizer 110 polarizes natural light or artificial light so that the screen is visible in the display device, and may be mainly made of a polyvinyl alcohol (PVA) film.
  • PVA polyvinyl alcohol
  • the polarizer 110 dyes iodine or dichroic dye in a modified polyvinyl alcohol film such as a partially formalized polyvinyl alcohol film, an acetoacetyl group modified polyvinyl alcohol film, and stretches it in the machine direction (MD).
  • MD machine direction
  • the polyvinyl alcohol film may be prepared by performing a swelling process, a dyeing step, and an extending step. Methods of performing each step are commonly known to those skilled in the art.
  • the polarizer 110 may have a thickness of about 5 ⁇ m to about 50 ⁇ m. In the above range, the polarizer 110 may be used in an optical display device.
  • the polarizer protective layer 130 includes a cured product of the polarizer protective layer composition according to the embodiments of the present invention described above.
  • the polarizer protective layer 130 may be formed by coating and curing the polarizer protective layer composition on one surface of the polarizer 110. Specifically, it may be formed by curing at an illuminance of about 100 mW / cm 2 to about 1,000 mW / cm 2, and an amount of light of about 100 mJ / cm 2 to about 1,000 mJ / cm 2 .
  • the polarizer protective layer 130 may protect the polarizer 110 from the pressure-sensitive adhesive film for the polarizing plate and prevent cracking of the polarizer 110 even under thermal shock conditions.
  • Conventional optical films require additional processing such as corona treatment to adhere to the polarizer, whereas the polarizer protective layer 130 has adhesion to the polarizer 110 to adhere well to the polarizer 110 without such additional processing. can do.
  • the polarizer protective layer 130 may implement a thinning effect of the polarizing plate 100.
  • the polarizer protective layer 130 may have a modulus of about 1,000 MPa to about 2,500 MPa. Within this range, the polarizer protective layer 130 is excellent in water resistance and has an effect of preventing in-plane cracking of the polarizer 110 under thermal shock conditions. In addition, within the above range, the polarizer protective layer 130 is excellent in cutting properties and water resistance.
  • the polarizer protective layer 130 may have a modulus greater than about 2,000 MPa and about 2,500 MPa or less. Within this range, the polarizer protective layer 130 is excellent in water resistance, and in addition to the effect of preventing in-plane cracking of the polarizer 110 under thermal shock conditions, the barrier property is excellent in water resistance and heat stability. In addition, within the above range, the polarizer protective layer 130 is excellent in cutting properties and water resistance.
  • the polarizer protective layer 130 may have a glass transition temperature (Tg) of about 50 ° C. or higher, specifically about 57 ° C. or higher, and more specifically about 65 ° C. or higher, as described in the polarizer protective layer composition. In the above range, the polarizer protective layer 130 has an effect of preventing in-plane cracking of the polarizer 110 under thermal shock conditions with increasing water resistance.
  • Tg glass transition temperature
  • the polarizer protective layer 130 may compensate for the strength of the polarizing plate 100, which may have a low mechanical strength by having a thickness in a predetermined range, and may implement a thinning effect. Specifically, the polarizer protective layer 130 may have a thickness of about 1 ⁇ m to about 10 ⁇ m, for example, about 2 ⁇ m to about 5 ⁇ m. In the above range, the polarizer protective layer 130 may be used for the polarizing plate 100, and the mechanical strength of the polarizing plate 100 may be compensated for.
  • the polarizer 101 may include a polarizer 110 and polarizer protective layers 131 and 132 formed on both surfaces of the polarizer 110.
  • 2 is a cross-sectional view of a polarizing plate 101 according to another embodiment of the present invention.
  • the polarizer 110 may form polarizer protective layers 131 and 132 on both surfaces thereof to improve mechanical strength or prevent cracking.
  • the polarizing plate 102 may include a polarizer 110, an optical film 120 formed on one surface of the polarizer 110, and a polarizer protective layer 130 formed on the rear surface of the polarizer 110.
  • 3 is a cross-sectional view of a polarizing plate 102 according to another embodiment of the present invention.
  • the polarizer 110 is manufactured by uniaxially stretching a polyvinyl alcohol (PVA) film in the machine direction (MD), which is the stretching direction, shrinkage in the machine direction (MD) when left in a harsh environment including thermal shock conditions is achieved. Get up.
  • PVA polyvinyl alcohol
  • MD machine direction
  • the polarizer 110 holds the contraction of the polarizer 110 only on one surface of the polarizer. More cracks may occur in the machine direction (MD).
  • the optical film 120 and the adhesive layer may be further formed on the other side of the polarizer 110, but only the formation of the optical film 120 and the adhesive layer has a limit in preventing cracks, and the optical film 120 and the adhesive layer. Due to this, the thickness of the polarizing plate 102 may be increased.
  • the polarizing plate 102 of one embodiment of the present invention forms the optical film 120 on one surface of the polarizer 110 and the polarizer protective layer 130 having a modulus of greater than about 1,000 MPa on the other surface of the polarizer 110.
  • the modulus of the polarizer protective layer 130 may be greater than about 1,000 MPa and about 2,500 MPa or less. In the above range, the polarizer protective layer 130 may prevent cracking of the polarizer 110 in a harsh environment and implement an effect of improving durability.
  • the polarizing plate 102 of another embodiment of the present invention forms the optical film 120 on one surface of the polarizer 110 and the polarizer protective layer 130 having a modulus of greater than about 2,000 MPa and about 2,500 MPa or less on the other surface of the polarizer 110.
  • a modulus of greater than about 2,000 MPa and about 2,500 MPa or less on the other surface of the polarizer 110.
  • the polarizing plate 102 has a longest length of cracks generated by MD at the end of the polarizer 110 when it is left at high temperature and / or high humidity of about 500 ⁇ m or less, for example, about 200 ⁇ m to about 500 ⁇ m, specifically About 200 ⁇ m to about 400 ⁇ m.
  • the thermal shock condition means that the temperature is increased from -40 ° C. to 85 ° C. but left at ⁇ 40 ° C. for 30 minutes, the temperature is increased to 85 ° C., and then left at 85 ° C. for 30 minutes to 1 cycle.
  • the optical film 120 is formed on one surface of the polarizer 110 to protect the polarizer 110, and may include a conventional optically transparent film.
  • cyclic polyolefin-based, poly (meth) acrylate-based, polycarbonate-based, polyester-based containing polyethylene terephthalate (PET) and the like including amorphous cyclic polyolefin (cyclic olefin polymer, COP), Cellulose ester type, polyether sulfone type, polysulfone type, polyamide type, polyimide type, polyolefin type, polyacrylate type, polyvinyl alcohol type, polyvinyl chloride type, polyvinyl chloride containing triacetyl cellulose etc. It may be a film formed of one or more of the dens.
  • the thickness of the optical film 120 may be about 10 ⁇ m to about 200 ⁇ m, for example, about 30 ⁇ m to about 120 ⁇ m. In the above range, the optical film 120 may be used in an optical display device.
  • a functional coating layer may be further formed on the upper surface of the optical film 120 to provide additional functions to the polarizing plate 102, for example, a hard coating layer, an anti-fingerprint layer, an antireflection layer, or the like. Can be.
  • the optical display device 200 of the present invention may include the polarizing plates 100, 101, and 102 of the present invention described above.
  • the optical display device 200 is a conventional optical display device 200 including the polarizing plates 100, 101, and 102, and may include, for example, a liquid crystal display device.
  • FIG. 4 is a cross-sectional view of the optical display device 200 of the embodiment of the present invention.
  • the optical display device 200 includes a liquid crystal display panel 210, a first polarizing plate 220 formed on one surface of the liquid crystal display panel 210, and a liquid crystal display panel 210. And a second polarizing plate 230 formed between the other surface and the liquid crystal display panel 210 and the light source unit 240, wherein at least one of the first polarizing plate 220 and the second polarizing plate 230 is a polarizing plate according to an embodiment of the present invention. 100, 101, 102).
  • the components A, B and C are combined in the amounts shown in Table 1 below, and 2 parts by weight of the photoradical polymerization initiator (E) is added to the total amount of A, B and C, and mixed to mix to protect the polarizer.
  • the layer composition was prepared.
  • An adhesive was applied to one surface of the polarizer at a temperature of 22 ° C. to 25 ° C. and a relative humidity of 20% to 60%, and an optical film was laminated.
  • an aqueous polyvinyl alcohol adhesive (a mixture of 100 parts by weight of water, 5 parts by weight of polyvinyl alcohol, 0.5 parts by weight of polyethyleneimine, and 0.5 parts by weight of zirconium oxide) was used.
  • the polarizer protective layer compositions prepared in Examples and Comparative Examples were applied to the other side of the polarizer at a thickness of 4 ⁇ m, and ultraviolet rays were irradiated under conditions of 400 mW / cm 2 and 1,000 mJ / cm 2 with a metal halide lamp.
  • a pressure-sensitive adhesive (CI-205 manufactured by Soken) was again coated on the polarizer protective layer to prepare a polarizing plate.
  • Table 2 The physical properties of Table 2 were evaluated for the polarizer protective layer composition of Examples and Comparative Examples, and a polarizing plate manufactured using the same.
  • the polarizing plates of Examples 1 to 6 of the present invention did not generate cracks in front of the polarizer when left under thermal shock conditions, and the cracks formed at the ends of the polarizers were also insignificant.
  • the adhesiveness to the polarizer and the cutting property is good, there is no need to further form an adhesive layer between the polarizer and the polarizer protective layer.
  • Comparative Examples 1 to 6 which do not contain an isocyanurate-based compound in the polarizer protective layer composition or whose content is outside the scope of the present invention, have problems in adhesion, cutting property, and water resistance. Cracks also occurred at the ends of the polarizer.
  • Adhesiveness In order to confirm the adhesiveness of a polarizer and a polarizer protective layer, the cutter blade tip was inserted between the polarizer protective layer and polarizer of the edge part, and it evaluated by the following.
  • a knife tip does not enter between a polarizer protective layer and a polarizer
  • Modulus of the polarizer protective layer is applied to a release film (for example, polyethylene terephthalate film) with a thickness of 50 ⁇ m, cured at roughness 400 mw / cm 2, light quantity 1,000 mJ / cm 2, and then the release film is removed.
  • a release film for example, polyethylene terephthalate film
  • the prepared adhesive film was cut into horizontal x vertical (10 mm x 100 mm) to prepare a specimen.
  • the specimen was fixed to DMA (Q800, TA Instruments), and in analysis mode, Tension Film, 25 ⁇ m in amplitude, 0.5 N in pre load, temperature increase rate 10 ° C./min, temperature range ⁇ 50 ° C. to 100 ° C., frequency 1 Hz , the strain was measured at 0.5%, and the storage modulus was measured by obtaining a value at 25 ° C.
  • the polarizer protective layer composition was applied to a release film (for example, polyethylene terephthalate film) with a thickness of 50 ⁇ m, cured to roughness 400 mw / cm 2, light quantity 1,000 mJ / cm 2, and then the release film was The protective layer was removed to prepare a protective layer, and the prepared protective layer was measured on a specimen cut to a width x length (10 mm x 100 mm). Specifically, the specimen may be measured under a heating condition consisting of 1st run and 2nd run under a nitrogen atmosphere by using a Discovery DSC (TA Instruments).
  • a Discovery DSC T Instruments
  • the 1st run is raised to 200 °C at a heating rate of 20 °C / min and then cooled to 0 °C
  • the second run is the inflection point of the curve obtained after the temperature is raised to 200 °C at a heating rate of 10 °C / min Determined by the transition temperature.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Polarising Elements (AREA)

Abstract

Les modes de réalisation de la présente invention concernent une composition de couche de protection de polariseur. La composition comprend : (A) un polyester(méth)acrylate ; (B) un (méth)acrylate possédant un groupe hydroxyle ; et (C) un composé isocyanurate, la composition présentant une température de transition vitreuse (Tg) d'environ 50 °C ou plus après durcissement.
PCT/KR2015/006035 2014-11-28 2015-06-15 Composition de couche de protection de polariseur, couche de protection de polariseur fabriquée à partir de celle-ci, plaque polarisante comprenant ladite couche et dispositif d'affichage optique comprenant celle-ci WO2016085072A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2014-0169209 2014-11-28
KR1020140169209A KR101780533B1 (ko) 2014-11-28 2014-11-28 편광자 보호층 조성물, 이로부터 제조된 편광자 보호층, 이를 포함하는 편광판 및 이를 포함하는 광학표시장치

Publications (1)

Publication Number Publication Date
WO2016085072A1 true WO2016085072A1 (fr) 2016-06-02

Family

ID=56074591

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2015/006035 WO2016085072A1 (fr) 2014-11-28 2015-06-15 Composition de couche de protection de polariseur, couche de protection de polariseur fabriquée à partir de celle-ci, plaque polarisante comprenant ladite couche et dispositif d'affichage optique comprenant celle-ci

Country Status (3)

Country Link
KR (1) KR101780533B1 (fr)
TW (1) TWI573835B (fr)
WO (1) WO2016085072A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180025002A (ko) * 2016-08-31 2018-03-08 삼성에스디아이 주식회사 편광판 및 이를 포함하는 광학표시장치
WO2018062642A1 (fr) * 2016-09-30 2018-04-05 삼성에스디아이 주식회사 Plaque polarisante et dispositif d'affichage optique la comprenant

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111712742B (zh) 2018-06-29 2022-06-28 株式会社Lg化学 偏光板、液晶面板和显示装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003154616A (ja) * 2001-11-20 2003-05-27 Teijin Dupont Films Japan Ltd 積層フィルム及び表面保護フィルム
JP2003185841A (ja) * 2001-12-19 2003-07-03 Fuji Photo Film Co Ltd 硬化皮膜を有する偏光板、その製造装置及び液晶表示装置
KR20040071213A (ko) * 2001-12-21 2004-08-11 소니 케미카루 가부시키가이샤 편광판
US20070179224A1 (en) * 2005-10-14 2007-08-02 Essilor International (Compagnie Generale D Optique) Ophthalmic Lenses Comprising a Photodegradation Protection Coating and a Process for Producing Such Lenses
US20130196077A1 (en) * 2012-01-31 2013-08-01 Hoya Corporation Method of manufacturing polarizing lens

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102361947B (zh) * 2009-03-23 2013-12-25 Dic株式会社 保护粘着膜、屏板及携带电子终端

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003154616A (ja) * 2001-11-20 2003-05-27 Teijin Dupont Films Japan Ltd 積層フィルム及び表面保護フィルム
JP2003185841A (ja) * 2001-12-19 2003-07-03 Fuji Photo Film Co Ltd 硬化皮膜を有する偏光板、その製造装置及び液晶表示装置
KR20040071213A (ko) * 2001-12-21 2004-08-11 소니 케미카루 가부시키가이샤 편광판
US20070179224A1 (en) * 2005-10-14 2007-08-02 Essilor International (Compagnie Generale D Optique) Ophthalmic Lenses Comprising a Photodegradation Protection Coating and a Process for Producing Such Lenses
US20130196077A1 (en) * 2012-01-31 2013-08-01 Hoya Corporation Method of manufacturing polarizing lens

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180025002A (ko) * 2016-08-31 2018-03-08 삼성에스디아이 주식회사 편광판 및 이를 포함하는 광학표시장치
WO2018043851A1 (fr) * 2016-08-31 2018-03-08 삼성에스디아이 주식회사 Plaque polarisante et dispositif d'affichage optique la comprenant
KR101955765B1 (ko) * 2016-08-31 2019-03-07 삼성에스디아이 주식회사 편광판 및 이를 포함하는 광학표시장치
CN109642976A (zh) * 2016-08-31 2019-04-16 三星Sdi株式会社 偏光板以及包含此偏光板的光学显示器
US20190250318A1 (en) * 2016-08-31 2019-08-15 Samsung Sdi Co., Ltd. Polarizing plate and optical display device comprising same
US11092728B2 (en) 2016-08-31 2021-08-17 Samsung Sdi Co., Ltd. Polarizing plate and optical display device comprising same
CN109642976B (zh) * 2016-08-31 2021-10-01 三星Sdi株式会社 偏光板以及包含此偏光板的光学显示器
WO2018062642A1 (fr) * 2016-09-30 2018-04-05 삼성에스디아이 주식회사 Plaque polarisante et dispositif d'affichage optique la comprenant

Also Published As

Publication number Publication date
TWI573835B (zh) 2017-03-11
TW201619286A (zh) 2016-06-01
KR101780533B1 (ko) 2017-09-22
KR20160065409A (ko) 2016-06-09

Similar Documents

Publication Publication Date Title
WO2013028047A2 (fr) Adhésif
WO2013035977A1 (fr) Film adhésif à déphasage, procédé de fabrication de ce film et élément optique comportant ce film
WO2011105878A9 (fr) Composition adhésive
WO2012064071A2 (fr) Composition adhésive
WO2011105875A2 (fr) Plaque de polarisation
EP2274394A2 (fr) Compositions adhésives autocollantes, polariseurs et écrans à cristaux liquides comportant de telles compositions
WO2010120105A2 (fr) Composition adhésive
WO2009088240A2 (fr) Film optique et dispositif d'information électronique utilisant ce film
WO2013095064A1 (fr) Composition adhésive
WO2014035117A1 (fr) Plaque de polarisation
WO2015080346A1 (fr) Composition adhésive, film adhésif formé à partir de cette dernière et dispositif d'affichage optique le comprenant
WO2014204252A1 (fr) Composition d'adhésif
WO2011065779A2 (fr) Composition adhésive
WO2018159923A1 (fr) Film de fenêtre, stratifié de film de fenêtre le comprenant et dispositif d'affichage d'image
WO2018043851A1 (fr) Plaque polarisante et dispositif d'affichage optique la comprenant
WO2016171389A1 (fr) Plaque de polarisation et appareil d'affichage optique la comprenant
WO2016085072A1 (fr) Composition de couche de protection de polariseur, couche de protection de polariseur fabriquée à partir de celle-ci, plaque polarisante comprenant ladite couche et dispositif d'affichage optique comprenant celle-ci
WO2012128594A2 (fr) Composition adhésive pour un film optique
WO2016159645A1 (fr) Plaque de polarisation et dispositif d'affichage optique la comprenant
WO2018110801A1 (fr) Composition adhésive pour plaque de polarisation, plaque de polarisation, et dispositif d'affichage optique
WO2011056026A2 (fr) Unité de rétro-éclairage
WO2012128595A2 (fr) Composition adhésive
WO2019031713A1 (fr) Dispositif d'affichage à cristaux liquides
WO2022139403A1 (fr) Film adhésif, élément optique le comprenant et dispositif d'affichage optique le comprenant
WO2016175601A1 (fr) Film de protection polarisant, plaque de polarisation le comprenant, et procédé de fabrication d'une plaque de polarisation

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: 15863911

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: 15863911

Country of ref document: EP

Kind code of ref document: A1