[go: up one dir, main page]

WO2020111864A1 - Stratifié optique - Google Patents

Stratifié optique Download PDF

Info

Publication number
WO2020111864A1
WO2020111864A1 PCT/KR2019/016708 KR2019016708W WO2020111864A1 WO 2020111864 A1 WO2020111864 A1 WO 2020111864A1 KR 2019016708 W KR2019016708 W KR 2019016708W WO 2020111864 A1 WO2020111864 A1 WO 2020111864A1
Authority
WO
WIPO (PCT)
Prior art keywords
formula
optical laminate
layer
weight
sensitive adhesive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2019/016708
Other languages
English (en)
Korean (ko)
Inventor
윤하송
유영창
김미선
노승주
오정선
손현희
서광수
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Chem Ltd
Original Assignee
LG Chem Ltd
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 LG Chem Ltd filed Critical LG Chem Ltd
Priority to CN201980007084.2A priority Critical patent/CN111527162B/zh
Priority to JP2020536217A priority patent/JP7055306B2/ja
Publication of WO2020111864A1 publication Critical patent/WO2020111864A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/06—Non-macromolecular additives organic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J133/00—Adhesives 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; Adhesives based on derivatives of such polymers
    • 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
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/10—OLEDs or polymer light-emitting diodes [PLED]

Definitions

  • Examples of the monomer of the formula (5) are methyl (meth)acrylate, ethyl (meth)acrylate, n-propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate, t -Butyl (meth)acrylate, sec-butyl (meth)acrylate, pentyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, 2-ethylbutyl (meth)acrylate, n-octyl (meth) And monomer units such as acrylate, isooctyl (meth)acrylate, isononyl (meth)acrylate, lauryl (meth)acrylate and/or tetradecyl (meth)acrylate.
  • the term “(meth)acrylate” is used to mean acrylate or methacrylate.
  • n-butyl acrylate is used as the
  • the acrylic polymer may further include a polymerization unit of a copolymerizable monomer having a polar group in order to improve the cohesive force.
  • the copolymerizable monomer having a polar functional group may be copolymerized with other compounds forming an acrylic polymer, such as the (meth)acrylic acid ester compound represented by Chemical Formula 5, and after copolymerization, a polar functional group on the side chain or terminal of the polymer It may mean a monomer that can provide.
  • the polar functional group may be, for example, a functional group capable of realizing a crosslinking structure by reacting with a multifunctional crosslinking agent described below by application of heat, or improving the wettability of the pressure-sensitive adhesive layer.
  • parts by weight may mean a ratio of weights between components, unless otherwise specified.
  • the ratio is about 0.5 parts by weight or more, 0.7 parts by weight or more, or 0.9 parts by weight or more, or about 25 parts by weight or less, 20 parts by weight or less, 15 parts by weight or less, 10 parts by weight or less, 5 parts by weight or less, or It may be 3 parts by weight or less, but this ratio may be appropriately changed in consideration of the desired cohesion or wettability.
  • the glass transition temperature of the acrylic polymer may be less than 0 °C. In other examples, the glass transition temperature may be -10 °C or less, -20 °C or less, -30 °C or less, -40 °C or less, -45 °C or less, or -50 °C or less, and the lower limit is not particularly limited, It may be -100 °C or higher, -90 °C or higher, -80 °C or higher, -70 °C or higher, -60 °C or higher, or -55 °C or higher.
  • the pressure-sensitive adhesive composition in addition to the pressure-sensitive adhesive polymer, from the viewpoint of absorbing ultraviolet rays, for example, ultraviolet rays having a wavelength of 380 nm or more, and imparting a function of blocking the ultraviolet rays to the optical laminate, the ultraviolet absorber Included additionally.
  • ultraviolet rays for example, ultraviolet rays having a wavelength of 380 nm or more
  • the ultraviolet absorber included additionally.
  • Various attempts have been made to apply the various types of ultraviolet absorbers to the pressure-sensitive adhesive composition to secure absorption performance against blue light, while not impairing the visibility characteristics of the final product. In particular, there have been limitations in improving the visibility characteristics of products.
  • the term “ultraviolet absorption capacity” refers to a minimum transmittance in a transmittance spectrum with respect to a wavelength, for example, any one of the wavelengths in the range of 10 nm to 450 nm, or all regions of the wavelength in the range, Alternatively, in the absorbance spectrum with respect to wavelength, for example, it may mean a property showing a maximum absorbance in any one of the wavelengths of 10 nm to 450 nm, or in all regions of the wavelength in the above range.
  • the pressure-sensitive adhesive composition by including a specific compound, specifically, a malononitrile-based compound as the ultraviolet absorber, may be excellent in blocking light having a blue region of 380 nm or more. Accordingly, when the optical laminate having the pressure-sensitive adhesive layer formed of the pressure-sensitive adhesive composition, for example, a polarizing plate is applied to an OLED that is vulnerable to light exposure in the blue region, it is possible to minimize the reduction in the lifetime of the blue light source of the OLED.
  • the ultraviolet absorber applied to the pressure-sensitive adhesive composition may further include other types of compounds together with the above-described malononitrile-based compound of formula (1).
  • the pressure-sensitive adhesive composition may further include a pyrazoline-based compound. Since the pressure-sensitive adhesive composition further includes a pyrazoline-based compound, the final product designed with the pressure-sensitive adhesive composition can block light having a wavelength in the blue region of 380 nm or more with improved performance, and as a result, blue light irradiation It is possible to minimize the reduction in the lifetime of the vulnerable OLED blue light source. In addition, when the ultraviolet absorber is mixed as described above, it is possible to minimize the change in color value of the final product designed with the pressure-sensitive adhesive composition, and improve its durability.
  • the pyrazoline-based compound may have a maximum absorption wavelength within a range of 10 nm to 410 nm. In another example, it may be 100 nm or more, 200 nm or more, 300 nm or more, 350 nm or more, 360 nm or more, 370 nm or more, 380 nm or more, or 385 nm or more, and 405 nm or less or 400 nm or less.
  • alkenyl group is each independently 2 to 20 carbon atoms, 2 to 16, 2 to 12, 2 carbon atoms unless otherwise defined. To 8, or 2 to 4, straight chain, branched or cyclic alkenyl group, alkenylene group, alkynyl group, or alkynylene group.
  • the alkenyl group, alkenylene group, alkynyl group, or alkynylene group may be optionally substituted by one or more substituents.
  • R 6 , R 7 and R 9 in Formula 2 may be a substituent in Formula 3.
  • a in Formula 3 may be an alkenylene group.
  • the malonic acid-based compound may mean a compound containing a structure derived from malonate, that is, a derivative of malonic acid.
  • Malonic acid is an unsaturated hetero chain compound with the molecular formula C 3 H 4 O 4 .
  • R 15 to R 19 are each independently hydrogen, an alkyl group, -OX 2 , or -NX 2 2 , wherein X 2 is hydrogen or an alkyl group, at least one of R 15 to R 19 is -OX 2 or -NX 2 2 and R 20 or R 21 is hydrogen or an alkyl group.
  • R 15 to R 19 may each independently be hydrogen or -NX 2 2 .
  • at least one of R 15 to R 19 may be -NX 2 2 in the above.
  • R 17 in Formula 4 is -NX 2 2 .
  • R 17 of Formula 4 may be -NX 2 2 , wherein R 15 to R 16 and R 18 to R 19 of Formula 4 are each independently hydrogen, an alkyl group, -OX 2 days You can.
  • R 20 and R 21 may be both alkyl groups, specifically, a straight-chain alkyl group having 1 to 4 carbon atoms.
  • alkyl group present in any one of R 15 to R 19 of Formula 4 X 2 , or R 20 to R 21 , C 1 to 20, 1 to 16, 1 to 12, 1 to 8, or Alkyl groups of 1 to 4 can be used.
  • the ratio may be 2 parts by weight or more, 3 parts by weight or more, 4 parts by weight or more, 5 parts by weight or more, or 6 parts by weight or more, 29 parts by weight or less, 28 parts by weight or less, 27 parts by weight or less, 26 It may be less than or equal to 25 parts by weight, less than or equal to 25 parts by weight, less than or equal to 24 parts by weight, less than or equal to 23 parts by weight, less than or equal to 22 parts by weight, less than or equal to 21 parts by weight, or less than or equal to 20 parts by weight.
  • the ratio of the malonic acid-based compound to the proportion of the malononitrile-based compound may also be independently adjusted.
  • the proportion of the malonic acid-based compound may be in the range of 10 parts by weight to 90 parts by weight relative to 100 parts by weight of the malononitrile-based compound.
  • the ratio may be 15 parts by weight or more, 20 parts by weight or more, 30 parts by weight or more, 31 parts by weight or more, 32 parts by weight or more, or 33 parts by weight or more, 85 parts by weight or less, 80 parts by weight or less, It may be 75 parts by weight or less, 70 parts by weight or less, 69 parts by weight or less, 68 parts by weight or less, or 67 parts by weight or less.
  • crosslinking agents such as an isocyanate crosslinking agent, an epoxy crosslinking agent, an aziridine crosslinking agent, and a metal chelate crosslinking agent may be used, but are not limited thereto.
  • isocyanate crosslinking agent polyfunctional isocyanate compounds such as tolylene diisocyanate, xylene diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate, isoborone diisocyanate, tetramethylxylene diisocyanate or naphthalene diisocyanate, or the polyfunctionality A compound obtained by reacting an isocyanate compound with a polyol compound such as trimethylol propane, etc.
  • the adhesive layer is a group consisting of an antioxidant, an ultraviolet stabilizer, a heat stabilizer, a plasticizer, an antistatic agent, a filler, an antifoaming agent, a surfactant, a nuclear agent, a flame retardant, a weathering stabilizer, a lubricant, and a release agent for the purpose of preventing yellowing, etc.
  • One or more additives selected from may be further added within a range capable of achieving the object of the present invention.
  • the pressure-sensitive adhesive composition may further include a solvent.
  • the solvent include aromatic hydrocarbons such as toluene, benzene and xylene; Aliphatic hydrocarbons such as cyclohexane and decalin; Esters such as ethyl acetate and butyl acetate; Ketones such as acetone, methyl ethyl ketone, and methyl isobutyl ketone; Alcohols such as methanol, ethanol, isopropanol, butanol, isobutanol, methyl cellosolve, ethyl cellosolve, and butyl cellosolve; Ethers such as tetrahydrofuran and dioxane; Halogenated hydrocarbons such as dichloromethane, chloroform and carbon tetrachloride; Dimethylformamide; And dimethyl sulfoxide. These solvents may be used alone or in combination of two or more.
  • the polarizer may be a linear polarizer.
  • linear polarizer refers to a polarizer in which light that is selectively transmitted is linearly polarized in one direction and linearly polarized light that is selectively absorbed in a direction perpendicular to the direction of vibration of the linearly polarized light. .
  • the thickness of the pressure-sensitive adhesive layer may be appropriately adjusted in consideration of the purpose of the present application.
  • the pressure-sensitive adhesive layer for example, may have a thickness of about 1 ⁇ m to 30 ⁇ m.
  • the thickness of the pressure-sensitive adhesive layer may be 1 ⁇ m or more, 3 ⁇ m or more, or 5 ⁇ m or more, and may be 25 ⁇ m or less, 20 ⁇ m or less, or 15 ⁇ m or less. It may be advantageous to provide an optical laminate having excellent durability in evaluating the performance of blocking ultraviolet rays including the blue region within the thickness range, color characteristics and reliability of the polarizing plate.
  • the optical laminate may have a transmittance of 10% or less in a wavelength range of more than 400 nm to 410 nm or less, for example.
  • the optical laminate may have a transmittance of 1% or less, 0.5% or less, 0.1% or less, or 0.05% or less for light having a wavelength of 380 nm, for example.
  • the optical laminate may have a transmittance of 1% or less, 0.5% or less, 0.2% or less, 0.15% or less, 0.10% or less, or 0.06% or less for light having a wavelength of 390 nm, for example.
  • the optical laminate may have a transmittance of 1% or less, or 0.95% or less, for light having a wavelength of 400 nm, for example.
  • the optical laminate may have a transmittance of 10% or less, 8% or less, or 7% or less for light having a wavelength of 410 nm, for example.
  • the a*b* color coordinate system may mean a* and b* color coordinates of a color coordinate system known as L*a*b*.
  • Lab Coordinate System is a color coordinate system based on the CIE (commission Internaltion de L'Eclairage) chromaticity diagram, which is based on the brightness factor (L*) and two color axes (a* and b* axes). It is a coordinate system that displays.
  • the a* axis is two color axes, green and red
  • the b* axis is two color axes, blue and yellow. The higher the b* value, the closer the color of the polarizer is to the yellow.
  • the lower limit of the b* value may be, for example, 1.0 or more, 1.5 or more, 2.0 or more, 2.5 or more, 3.0 or more, or 3.3 or more.
  • the upper limit of the a* value may be, for example, less than 0, -0.5 or less, -1.0 or less, or -1.4 or less.
  • Each value in the CIE L*a*b* color coordinate system may be measured by applying a general method of measuring each coordinate of the color coordinate system, for example, an detector in the form of an integrating sphere at the measurement position. After placing the equipment (eg UV-visible spectrometer) it can be measured according to the manufacturer's manual. In one example, each coordinate of the CIE L*a*b* color space may be measured with respect to the optical stack itself.
  • a general method of measuring each coordinate of the color coordinate system for example, an detector in the form of an integrating sphere at the measurement position. After placing the equipment (eg UV-visible spectrometer) it can be measured according to the manufacturer's manual.
  • each coordinate of the CIE L*a*b* color space may be measured with respect to the optical stack itself.
  • the optical laminate may have excellent durability.
  • the optical laminate may not be lifted at the interface of the pressure-sensitive adhesive layer in a high-temperature reliability evaluation at a temperature of 80°C or a reliability evaluation stored at a temperature of 60°C and a relative humidity of 90% for 1000 hours.
  • the optical laminate may further include a retardation layer.
  • the retardation layer may have a function of converting circularly polarized light into linearly polarized light or linearly polarized light into circularly polarized light.
  • the term "plane phase difference (R in )" is a value determined according to the following Equation 1.
  • the slow axis of the retardation layer may be about 40 degrees to 50 degrees, about 43 degrees to 47 degrees, preferably about 45 degrees with the absorption axis of the polarizer.
  • the retardation layer may be a polymer stretched film or a cured layer of a liquid crystal compound.
  • Rin d ⁇ (nx-ny)
  • Equation 1 d is the thickness of the retardation layer, and nx, ny, and nz denote refractive indices for the x-axis, y-axis, and z-axis directions of the retardation layer, respectively.
  • the x-axis means a direction parallel to the planar slow axis of the retardation layer, the y-axis means a direction parallel to the planar progression axis of the retardation layer, and the z-axis means the thickness direction of the retardation layer.
  • the retardation layer may be a functional layer having so-called reverse wavelength dispersion characteristics.
  • reverse wavelength property may mean a property that satisfies Equation 2 below:
  • Equation 2 the in-plane retardation of the retardation layer for light at a wavelength of 450 nm
  • R(550) is the in-plane retardation of the retardation layer for light at a wavelength of 550 nm
  • R(650) is light at a wavelength of 650 nm Is the in-plane retardation of the retardation layer.
  • the in-plane retardation of each of the retardation layers may be calculated according to Equation 1 above. However, in-plane retardation for light having a wavelength of 450 nm is nx and ny in Equation 1, and refractive indexes for light having a wavelength of 450 nm are applied. In-plane retardation for light having a wavelength of 550 nm is 550 nm as nx and ny in Equation 1. The refractive index for light of wavelength is applied, and the in-plane retardation for light of 650 nm wavelength is nx and ny in Equation 1, and the refractive index for light of 650 nm wavelength is applied.
  • the retardation layer satisfying Equation 2 may exhibit a phase delay characteristic designed in a wide wavelength range. By controlling the R(450)/R(550) and/or R(650)/R(550) of Equation 2 in the retardation layer, a better effect can be provided.
  • R(450)/R(550) may be in the range of 0.6 to 0.99.
  • R(450)/R(550) is 0.61 or more, 0.62 or more, 0.63 or more, 0.64 or more, 0.65 or more, 0.66 or more, 0.67 or more, 0.69 or more, 0.70 or more, 0.71 or more, 0.72 or more, 0.73 or more in other examples, 0.74 or more, 0.75 or more, 0.76 or more, 0.77 or more, 0.78 or more, 0.79 or more, 0.80 or more, 0.81 or more, 0.82 or more, 0.83 or more, 0.84 or more, 0.85 or more, 0.86 or more, 0.87 or more, 0.88 or more, 0.89 or more, or 0.90 or more Can be.
  • the R (450) / R (550) is 0.98 or less, 0.97 or less, 0.96 or less, 0.95 or less, 0.94 or less, 0.93 or less, 0.92 or less, 0.91 or less, 0.90 or less, 0.89 or less, 0.88 or less, 0.87 or less in other examples , 0.86 or less or 0.85 or less.
  • R(650)/R(550) of Equation 4 may be in the range of 1.00 to 1.19.
  • the R(650)/R(550) may be 1.18 or less, 1.17 or less, 1.16 or less, 1.15 or less, 1.14 or less, 1.13 or less, 1.12 or less, 1.11 or less, 1.1 or less, or 1.08 or less.
  • R(650)/R(550) of Equation 3 may be 1.01 or more, 1.02 or more, 1.03 or more, 1.04 or more, 1.05 or more, 1.06 or more, 1.07 or more, 1.08 or more, or 1.09 or more in other examples.
  • the method of adjusting the physical properties of the retardation layer to the above-described range is not particularly limited.
  • the type of the polymerizable liquid crystal compound contained in the polymerizable liquid crystal composition and the ratio thereof may be controlled by controlling the ratio, or the thickness of the retardation film It can also be controlled by appropriately adjusting.
  • a cured layer of a liquid crystal polymer layer or a polymerizable liquid crystal composition as a retardation layer, and in particular, a cured layer of a polymerizable liquid crystal composition comprising a polymerizable liquid crystal compound having specific reverse wavelength characteristics. It may be advantageous to apply.
  • the optical laminate of the present application can be made to secure the desired ultraviolet blocking properties.
  • the pressure-sensitive adhesive layer may be present between the polarizer and the retardation layer or outside the retardation layer.
  • the adhesive layer described below exists between the polarizer and the retardation layer, and the pressure-sensitive adhesive layer exists outside the retardation layer.
  • the term “outside of the phase difference layer” may mean a position on the opposite side of the polarizer side with respect to the phase difference layer, and may include a position directly in contact with or not directly in contact with the phase difference layer.
  • the term “outside of the polarizer” may mean a position on the opposite side of the retardation layer side with respect to the polarizer, and may include a position directly contacting the polarizer or a position not directly contacting the polarizer. That is, in the optical laminate, it may be appropriate that the retardation layer is present on the opposite side of the pressure-sensitive adhesive layer based on the optical film (eg, polarizer).
  • the term “adhesive layer” may mean a layer that cannot be re-attached upon desorption once attached to the adherend once, since it retains a solid state after being completely cured.
  • the adhesive layer can be formed, for example, by applying an adhesive composition to one surface of the polarizer and curing it by drying, heating or irradiation with electromagnetic waves.
  • the term “cure of the adhesive composition” may mean a process of allowing the adhesive composition to express adhesive properties by physical action or chemical reaction.
  • the adhesive layer may mean a layer formed of an adhesive composition.
  • the adhesive composition may include an adhesive as a main component, and the components for the main component are as described above.
  • the specific kind of material that can be used as the adhesive is not particularly limited as long as it can be cured to express desired adhesive properties.
  • the adhesive examples include polyvinyl alcohol-based adhesives; Acrylic adhesive; Vinyl acetate-based adhesives; Urethane-based adhesives; Polyester adhesives; Polyolefin adhesives; Polyvinyl alkyl ether adhesives; Rubber adhesives; Vinyl chloride-vinyl acetate-based adhesives; Styrene-butadiene-styrene (SBS) adhesives; Styrene-butadiene-styrene hydrogenated (SEBS)-based adhesives; Ethylene adhesives; And acrylic acid ester-based adhesives or the like.
  • the adhesive layer as described above can be prepared by curing, for example, an aqueous, solvent-based or solvent-free adhesive composition.
  • the optical laminate of the present application may be a polarizing plate.
  • the adhesive layer 30 is present between the polarizer 10 and the retardation layer 20, and the pressure-sensitive adhesive layer 40 may be outside the retardation layer 20. have.
  • an intermediate layer for example, the polarizer protective film, a retardation film other than the retardation layer, or a base film of the retardation film may or may not be included. It might be.
  • the liquid crystal alignment layer included in the polarizing plate can be advantageous because it can protect from additional ultraviolet rays.
  • the liquid crystal alignment film may be used when a liquid crystal film (cured layer of a liquid crystal compound) is used as the retardation layer.
  • the polarizing plate may further include an additional layer in addition to the retardation layer.
  • the upper layer 103 may be stacked on the opposite side of the polarizer 101 toward the phase difference layer 102.
  • the pressure-sensitive adhesive layer may be present at one or more positions between the upper layer and the polarizer, between the polarizer and the retardation layer, and outside the retardation layer.
  • an adhesive layer is present at one or more positions between the upper layer and the polarizer and between the polarizer and the retardation layer, and the pressure-sensitive adhesive layer is outside the retardation layer. It is appropriate to exist.
  • a protective film of a polarizer, a hard coating layer, a retardation film other than the retardation layer, an antireflection layer, or a liquid crystal coating layer may be exemplified, but is not limited thereto.
  • the specific type of each configuration used as the upper layer is not particularly limited, and for example, various types of films used to constitute an optical film such as a polarizing plate in the industry can be used without limitation.
  • the upper layer may be a single layer of the illustrated layers, or may have a multi-layer structure including a stacked structure of two or more of the illustrated layers.
  • the lower layer 203 may be stacked on the opposite surface of the phase difference layer 202 facing the polarizer 201.
  • the pressure-sensitive adhesive layer may be present at one or more positions between the lower layer and the retardation layer, between the polarizer and the retardation layer, and outside the retardation layer.
  • an adhesive layer is present at one or more positions between the lower layer and the retardation layer and between the polarizer and the retardation layer, and the pressure-sensitive adhesive layer is outside the retardation layer. It is appropriate to exist.
  • an upper layer as shown in FIG. 2 may be added.
  • an upper layer such as a hard coating layer or a low reflection layer may be present on the outside of the polarizer, and a protective film may be present on one or both sides of the polarizer.
  • the type of the lower layer a retardation film other than the retardation layer or an adhesive layer for attaching the polarizing plate to other elements, an adhesive layer, or a protective film or release film protecting the adhesive layer or adhesive layer may be exemplified.
  • the pressure-sensitive adhesive layer as the lower layer may be the pressure-sensitive adhesive layer of the present application described above.
  • the lower layer may be a single layer of the illustrated layers, or may have a multi-layer structure including a stacked structure of two or more of the illustrated layers.
  • Examples of the protective film of the polarizer or the base film of the retardation layer include, for example, cellulose films such as TAC (Triacetyl cellulose) films; Polyester films such as PET (poly(ethylene terephthalate)) films; Polycarbonate film; Polyether sulfone film; An acrylic film and/or a polyethylene film, a polypropylene film, a polyolefin film including a cyclo-based or norbornene structure, or a polyolefin-based film such as an ethylene-propylene copolymer film may be used, but is not limited thereto.
  • cellulose films such as TAC (Triacetyl cellulose) films
  • Polyester films such as PET (poly(ethylene terephthalate)) films
  • Polycarbonate film polycarbonate film
  • Polyether sulfone film An acrylic film and/or a polyethylene film, a polypropylene film, a polyolefin film including a cyclo-based or norbornene
  • a retardation film having a positive thickness direction retardation may be exemplified.
  • the term “thickness phase retardation (Rth)” may be a value determined according to Equation 3 below.
  • the polarizing plate further includes a retardation film having a positive thickness direction retardation, antireflection characteristics and color characteristics may be excellent in a viewing angle.
  • a retardation film satisfying the following Equation 4 or Equation 5 may be used.
  • a retardation film satisfying Equation 4 below may be referred to as a +C plate, and a retardation film satisfying Equation 5 below may be referred to as a +B plate.
  • the retardation film examples include a polymer stretched film, a vertically oriented liquid crystal layer, a splay-oriented liquid crystal layer, or a tilt-oriented liquid crystal layer, but are not limited thereto.
  • the projection of the optical axis (ground axis) of the retardation film to the plane may be parallel or orthogonal to the absorption axis of the polarizer.
  • nx ny ⁇ nz
  • d is the thickness of the retardation layer, and in Formulas 3 to 5, nx, ny, and nz are as defined above, respectively.
  • the present application also relates to an organic light emitting device.
  • the organic light emitting device may include the optical laminate and the organic light emitting panel.
  • the optical laminate is a polarizing plate, and the polarizing plate includes a retardation layer, the retardation layer may be disposed adjacent to the organic light emitting panel.
  • the optical laminate may be attached to the organic light emitting panel via the adhesive layer. That is, in the organic "U optical device, the optical film may be attached to the organic light emitting panel via the pressure-sensitive adhesive layer.
  • the optical laminate for example, a polarizing plate may be disposed outside the substrate.
  • the optical laminate may be disposed outside the sealing substrate.
  • the polarizing plate may improve the visibility of the organic light emitting device by preventing external light from being reflected by a reflective layer made of metal, such as an electrode and a wiring, of the organic light emitting device and coming out of the organic light emitting device.
  • the substrate of the organic light emitting device may be a plastic substrate.
  • An organic light emitting device including a plastic substrate may be advantageous for the implementation of a rollable, flexible, or bendable organic light emitting device.
  • the plastic substrate may include a polymer.
  • the polymer may include polyimide, polyamic acid, polyethylene naphthalate, polyether ether ketone, polycarbonate, polyethylene terephthalate, polyether sulfide, polysulfone, or acrylic polymer.
  • the plastic substrate in terms of process temperature, may include polyimide having excellent high temperature durability.
  • a transparent substrate may be used as the substrate.
  • the transmissive substrate may have, for example, a transmittance of 50% or more, 60% or more, 70% or more, or 80% for light in the visible region.
  • One of the first electrode layer and the second electrode layer may be an anode and the other may be a cathode.
  • the anode may be made of a conductive material having a high work function as an electrode into which a hole is injected
  • the cathode may be made of a conductive material having a low work function as an electrode through which an electron is injected.
  • the first electrode layer may be an anode
  • the second electrode layer may be a cathode.
  • the anode may be a transparent electrode, and the cathode may be a reflective electrode.
  • the anode may include a transparent metal oxide, for example, ITO, IZO, AZO, GZO, ATO or SnO 2 .
  • the cathode may include metal, for example, Ag, Au, Al, and the like.
  • the organic light emitting layer may include an organic material that can emit light when power is applied to the first electrode layer and the second electrode layer.
  • a first electrode layer may be formed of a transparent electrode layer
  • a second electrode layer may be formed of a reflective electrode layer.
  • a first electrode layer is formed as a reflective electrode layer
  • a second electrode layer is formed as a transparent electrode layer. Electrons and holes injected by the electrode layer may be recombined in the organic emission layer to generate light. Light may be emitted to the substrate side in the lower emission type element and to the second electrode layer side in the upper emission type element.
  • the organic emission layer may include a red emission layer, a green emission layer, and a blue emission layer.
  • the light emitting layer may include a known organic material that emits red, green, and blue light, respectively.
  • the organic light emitting device is driven by a method of constructing one pixel (dot, pixel) while the light emitting layers of the three primary colors emit different colors (RGB method) or stacking the light emitting layers of the three primary colors to produce white color.
  • RGB method red, green, and blue light
  • a color filter layer is disposed on the front surface of the white light emitting layer to drive various colors (WOLED method).
  • the organic light emitting panel may further include an auxiliary layer between the first electrode layer and the organic light emitting layer and between the second electrode layer and the organic light emitting layer.
  • the sub-layer may include a hole transporting layer, a hole injecting layer, an electron injecting layer and an electron transporting layer for balancing electrons and holes. However, it is not limited thereto.
  • the organic light emitting display panel may further include a sealing substrate.
  • the encapsulation substrate may be present on the second electrode layer.
  • the encapsulation substrate may be made of glass, metal, and/or polymer, and seal the first electrode layer, the organic light emitting layer, and the second electrode layer to prevent moisture and/or oxygen from entering the outside.
  • the optical laminate of the present application can minimize the shortening of the life of the blue light source in the organic light emitting device, especially when applied to an organic light emitting device.
  • the optical layered product of the present application does not have a large change in color value and can exhibit excellent durability at the same time without impairing optical properties.
  • 1 to 6 are views exemplarily showing the structure of the optical laminate of the present application.
  • FIG. 7 is a view exemplarily showing the structure of the organic light emitting device of the present application.
  • the polarizing plates prepared in Examples and Comparative Examples were cut to a size of 25 mm ⁇ 25 mm (width ⁇ length) to prepare specimens.
  • the ultraviolet ray blocking performance including the blue region is evaluated.
  • V-7100 ultraviolet visible light spectrometer
  • the transmittance is expressed as a percentage of the amount of light passing through the polarizing plate.
  • the specimens prepared by cutting the polarizing plates prepared in Examples and Comparative Examples to a size of 90 mm ⁇ 170 mm (horizontal ⁇ vertical) are prepared for each of the Examples and Comparative Examples, respectively.
  • the pressure applied at the time of attachment is about 5 Kg/cm 2 , and work in a clean room to prevent bubbles or foreign matter from occurring at the interface.
  • heat resistance evaluation After putting the prepared sample into the reliability chamber, after standing for 500 hours under the condition of a temperature of 80 °C, it is observed whether or not bubbles or floating occurs at the interface of the pressure-sensitive adhesive layer (heat resistance evaluation).
  • the heat resistance evaluation criteria are as follows.
  • heat and moisture resistance evaluation After the prepared sample was put into a reliability chamber and left for 1000 hours under conditions of a temperature of 60° C. and a relative humidity of 90%, whether or not occurrence of excitation at the interface of the pressure-sensitive adhesive layer was observed (heat and moisture resistance evaluation).
  • the criteria for evaluating heat resistance to moisture were as follows.
  • a compound of malononitrile of Formula A (2-(4-hydroxy-2-methoxybenzylidene)malononitrile) was prepared according to the following procedure.
  • DBU 1,8-Diazabicyclo(5.4.0)undec-7-ene
  • step 2) hydrochloric acid (HCl) having the same mole number as ethanol added is added.
  • step 5 After completion of the reaction, the resultant of step 4) is filtered to obtain the final product in a solid state.
  • the weight average molecular weight of the adhesive polymer was measured under the following conditions using Gel Permeation Chromatography (GPC). For the production of a calibration curve, measurement results are converted using standard polystyrene of the Agilent system.
  • a polarizing plate was prepared by laminating (stacking) the prepared adhesive layer on one side of a known polarizing plate, on which both sides of a PVA (poly(vinyl alcohol)) polarizer were protected with a triacetyl cellulose (TAC) protective film having a thickness of about 60 ⁇ m. .
  • PVA poly(vinyl alcohol)
  • TAC triacetyl cellulose
  • the optical laminate of the present application has a transmittance of less than 1% for wavelength light of 380 nm or more, especially wavelength light within a range of 380 nm to 400 nm, and thus has high blocking properties for wavelength light in the above range, It can be seen that it is suitable for protecting the blue light source of the organic light emitting device.
  • the optical layered body of the comparative example derived from the pressure-sensitive adhesive composition without applying the compound defined in the present application has a significantly higher a* value and a relatively high b* value, resulting in inferior visual characteristics, and especially yellowing due to a high b* value. You can see that it has.
  • the optical laminate satisfying the conditions specified in the present application has appropriate a* values and b* values, and thus has excellent visibility characteristics and excellent durability.
  • polarizing plate 701: substrate, 702: first electrode layer,

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Adhesive Tapes (AREA)
  • Electroluminescent Light Sources (AREA)
  • Polarising Elements (AREA)

Abstract

La présente invention concerne un stratifié optique et une utilisation associée. Le stratifié optique de la présente invention est excellent en termes de blocage de rayons ultraviolets, en particulier de rayons ultraviolets comprenant une région de lumière bleue de 380 nm ou plus. En particulier lorsqu'il est appliqué à un dispositif électroluminescent organique, le stratifié optique de la présente invention peut réduire au minimum le raccourcissement de la durée de vie d'une source de lumière bleue dans le dispositif électroluminescent organique. Le stratifié optique de la présente invention a peu de changement des valeurs de couleur et peut présenter une excellente durabilité, sans affecter les propriétés optiques. Le stratifié optique est particulièrement approprié lorsqu'il est utilisé dans un dispositif électroluminescent organique.
PCT/KR2019/016708 2018-11-30 2019-11-29 Stratifié optique Ceased WO2020111864A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201980007084.2A CN111527162B (zh) 2018-11-30 2019-11-29 光学层合体
JP2020536217A JP7055306B2 (ja) 2018-11-30 2019-11-29 光学積層体

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2018-0152232 2018-11-30
KR20180152232 2018-11-30

Publications (1)

Publication Number Publication Date
WO2020111864A1 true WO2020111864A1 (fr) 2020-06-04

Family

ID=70853540

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2019/016708 Ceased WO2020111864A1 (fr) 2018-11-30 2019-11-29 Stratifié optique

Country Status (5)

Country Link
JP (1) JP7055306B2 (fr)
KR (1) KR102339412B1 (fr)
CN (1) CN111527162B (fr)
TW (1) TWI786350B (fr)
WO (1) WO2020111864A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102401913B1 (ko) * 2021-06-11 2022-05-25 최돈수 유기 전기 발광 소자용 발광 재료, 이를 이용한 유기 전기 발광 소자 및 유기 전기 발광 소자용 재료
CN113993323B (zh) * 2021-11-09 2023-08-15 Oppo广东移动通信有限公司 电子设备壳体及其制备方法、电子设备
JP2023126057A (ja) * 2022-02-28 2023-09-07 日東電工株式会社 Ｏｌｅｄ表示装置用光学積層体
JP2023126056A (ja) * 2022-02-28 2023-09-07 日東電工株式会社 Ｏｌｅｄ表示装置用粘着フィルム

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09100392A (ja) * 1995-10-03 1997-04-15 Hitachi Chem Co Ltd 熱硬化性樹脂組成物、接着剤シート及び接着剤付き金属はく
JP2004163800A (ja) * 2002-11-15 2004-06-10 Mitsubishi Chemicals Corp 感光性樹脂組成物
JP2015189961A (ja) * 2014-03-29 2015-11-02 株式会社日本触媒 高エネルギー可視光線遮蔽性粘着剤
WO2017159969A1 (fr) * 2016-03-18 2017-09-21 삼성에스디아이 주식회사 Lame polarisante pour dispositif d'affichage électroluminescent et dispositif d'affichage électroluminescent la comprenant
KR20180098240A (ko) * 2015-12-25 2018-09-03 닛토덴코 가부시키가이샤 유기 el 표시 장치용 점착제 조성물, 유기 el 표시 장치용 점착제층, 유기 el 표시 장치용 점착제층을 갖는 편광 필름, 및 유기 el 표시 장치

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4875309B2 (ja) * 2005-03-04 2012-02-15 株式会社日本化学工業所 新規な光線吸収材料
KR101474900B1 (ko) * 2006-09-27 2014-12-19 후지필름 가부시키가이샤 화합물 또는 이것의 토토머, 금속착체 화합물, 착색 감광성경화 조성물, 컬러필터, 및 제조
US8367282B2 (en) * 2006-09-27 2013-02-05 Fujifilm Corporation Compound or its tautomer, metal complex compound, colored photosensitive curing composition, color filter, and production
KR101042477B1 (ko) 2007-05-23 2011-06-16 주식회사 엘지화학 내열성이 우수한 투명수지 조성물 및 이에 의해 제조된광학 등방성 필름
JP2011184414A (ja) * 2010-03-11 2011-09-22 Fujifilm Corp ポリマーフィルム、紫外線吸収剤、メロシアニン系化合物、及びメロシアニン系化合物の製造方法
CN103189797A (zh) * 2010-10-29 2013-07-03 住友化学株式会社 感光性树脂组合物、图案构造物、显示装置及隔壁
KR20160094362A (ko) * 2013-12-05 2016-08-09 가부시키가이샤 아데카 신규 화합물 및 상기 화합물을 함유하는 조성물
JP6264084B2 (ja) * 2014-02-19 2018-01-24 三菱ケミカル株式会社 電子写真感光体、カートリッジ、及び画像形成装置
WO2017038252A1 (fr) * 2015-09-04 2017-03-09 富士フイルム株式会社 Matériau, composition, composition durcissable, film durci, filtre optique, élément d'imagerie solide, capteur de rayon infrarouge, module de caméra et procédé de production dudit matériau
KR101911997B1 (ko) * 2015-09-16 2018-10-25 동우 화인켐 주식회사 점착제 조성물 및 이를 포함하는 편광판
CN116144292A (zh) * 2015-12-25 2023-05-23 日东电工株式会社 有机el显示装置用粘合剂层、带有有机el显示装置用粘合剂层的偏振膜和有机el显示装置
JP2018028974A (ja) * 2016-08-15 2018-02-22 日東電工株式会社 有機ｅｌ表示装置用粘着剤組成物、有機ｅｌ表示装置用粘着剤層、有機ｅｌ表示装置用粘着剤層付偏光フィルム、及び有機ｅｌ表示装置
JP2018072711A (ja) * 2016-11-02 2018-05-10 日東電工株式会社 偏光板
JP2018072712A (ja) * 2016-11-02 2018-05-10 日東電工株式会社 偏光板
KR102236533B1 (ko) * 2018-01-23 2021-04-06 주식회사 엘지화학 점착제 조성물 및 이의 용도
JP7128633B2 (ja) * 2018-03-01 2022-08-31 株式会社日本触媒 樹脂組成物および光学フィルター
JP7171730B2 (ja) * 2018-06-05 2022-11-15 エルジー・ケム・リミテッド 粘着剤組成物

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09100392A (ja) * 1995-10-03 1997-04-15 Hitachi Chem Co Ltd 熱硬化性樹脂組成物、接着剤シート及び接着剤付き金属はく
JP2004163800A (ja) * 2002-11-15 2004-06-10 Mitsubishi Chemicals Corp 感光性樹脂組成物
JP2015189961A (ja) * 2014-03-29 2015-11-02 株式会社日本触媒 高エネルギー可視光線遮蔽性粘着剤
KR20180098240A (ko) * 2015-12-25 2018-09-03 닛토덴코 가부시키가이샤 유기 el 표시 장치용 점착제 조성물, 유기 el 표시 장치용 점착제층, 유기 el 표시 장치용 점착제층을 갖는 편광 필름, 및 유기 el 표시 장치
WO2017159969A1 (fr) * 2016-03-18 2017-09-21 삼성에스디아이 주식회사 Lame polarisante pour dispositif d'affichage électroluminescent et dispositif d'affichage électroluminescent la comprenant

Also Published As

Publication number Publication date
JP2021517262A (ja) 2021-07-15
TW202035619A (zh) 2020-10-01
KR20200066250A (ko) 2020-06-09
KR102339412B1 (ko) 2021-12-16
CN111527162B (zh) 2022-04-19
TWI786350B (zh) 2022-12-11
JP7055306B2 (ja) 2022-04-18
CN111527162A (zh) 2020-08-11

Similar Documents

Publication Publication Date Title
WO2019147011A1 (fr) Composition adhésive et son utilisation
WO2019235832A1 (fr) Composition adhésive
WO2020111864A1 (fr) Stratifié optique
WO2010008239A2 (fr) Plaque de polarisation et afficheur à cristaux liquides
WO2010002198A9 (fr) Composition adhesive, film protecteur destine a une plaque de polarisation, plaque de polarisation et ecran a cristaux liquides
WO2017010765A1 (fr) Composé
WO2015008925A1 (fr) Film polarisant et appareil d'affichage d'images le comprenant
WO2018043851A1 (fr) Plaque polarisante et dispositif d'affichage optique la comprenant
WO2019013516A1 (fr) Polariseur circulaire
WO2017171200A1 (fr) Filtre coloré flexible
WO2021049903A1 (fr) Stratifié optique
WO2017171271A1 (fr) Capteur tactile à film et panneau à écran tactile le comprenant
WO2021132924A1 (fr) Composition d'encapsulation, couche d'encapsulation la comprenant, et appareil encapsulé comprenant une couche d'encapsulation
WO2012064143A2 (fr) Élément optique
WO2024106856A1 (fr) Plaque polarisante et dispositif d'affichage optique
WO2014129820A1 (fr) Dispositif d'affichage
WO2012064142A2 (fr) Élément optique
WO2012064145A2 (fr) Élément optique
WO2013073922A1 (fr) Dispositif optique
WO2024053962A1 (fr) Dispositif d'affichage optique
WO2024210575A1 (fr) Composition d'encapsulation et dispositif électroluminescent
WO2022050675A1 (fr) Film adhésif, élément optique le comprenant, et dispositif d'affichage optique le comprenant
WO2017078247A1 (fr) Film de capteur tactile
WO2023163293A1 (fr) Feuille adhésive et dispositif d'affichage la comprenant
WO2012064144A2 (fr) Élément optique

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2020536217

Country of ref document: JP

Kind code of ref document: A

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

Ref document number: 19890612

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: 19890612

Country of ref document: EP

Kind code of ref document: A1