WO2020071646A1 - Plaque polarisante et dispositif d'affichage optique la comprenant - Google Patents

Plaque polarisante et dispositif d'affichage optique la comprenant

Info

Publication number
WO2020071646A1
WO2020071646A1 PCT/KR2019/011436 KR2019011436W WO2020071646A1 WO 2020071646 A1 WO2020071646 A1 WO 2020071646A1 KR 2019011436 W KR2019011436 W KR 2019011436W WO 2020071646 A1 WO2020071646 A1 WO 2020071646A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
polarizing plate
display area
shielding layer
polarizer
Prior art date
Application number
PCT/KR2019/011436
Other languages
English (en)
Korean (ko)
Inventor
김진우
김유진
이배욱
황지현
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 WO2020071646A1 publication Critical patent/WO2020071646A1/fr

Links

Images

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
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • 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
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements

Definitions

  • the present invention relates to a polarizing plate and an optical display device including the same.
  • the optical display device is composed of a display area and a non-display area.
  • the display area is light transmissive and allows an image to be viewed through the screen.
  • the non-display area is an area positioned at the edge of the display area and surrounding the display area. The non-display area prevents a user using the optical display device from viewing a printed circuit board, a driving chip, or the like.
  • the non-display area was implemented by a plastic frame.
  • An optical display device may be manufactured using the polarizing plate and the panel on which the light shielding layer is formed.
  • the polarizing plate is supplied in a larger size than the panel. Therefore, after attaching the polarizing plate and the panel on the basis of one of the four surfaces of the polarizing plate on which the light-shielding layer is formed, cutting of the polarizing plate protruding from the panel is performed using a laser. At this time, the exact position to be cut is selected by recognizing an alignment mark displayed under the polarizing plate in the optical display manufacturing apparatus.
  • the optical density (OD) in the visible light region may be lowered, and thus the light-shielding effect of the light-shielding layer may be reduced, and the adhesion of the light-shielding layer to the polarizer protective film, the light-shielding layer to the polarizer and the adhesive layer There is a problem in that it cannot function as a light-shielding layer due to poor adhesion and poor reliability and durability.
  • the "OD" is an index for evaluating the light-shielding property, and means that the higher the OD value, the better the light-shielding property.
  • An object of the present invention is to provide a polarizing plate having a light-shielding layer that is excellent in light-shielding property and has excellent light transmittance in the infrared region, so that it can be effectively cut by increasing the alignment mark recognition rate during cutting after bonding with a panel.
  • Another object of the present invention is to provide a polarizing plate having a light-shielding layer having excellent adhesion to a polarizer protective film.
  • Another object of the present invention is to provide a polarizing plate having a light shielding layer having excellent adhesion to a polarizer and an adhesive layer among polarizing plates.
  • Another object of the present invention is to provide a polarizing plate excellent in reliability and durability.
  • the polarizing plate of the present invention is a polarizing plate composed of a display area and a non-display area surrounding the display area, wherein the polarizing plate includes a polarizer and an adhesive layer sequentially laminated on one surface of the polarizer and a first polarizer protective film, wherein the ratio A light-blocking layer forming at least a part of the display area is formed on the lower surface of the first polarizer protective film and the adhesive layer, and the light-blocking layer is one or more organic dyes of tris phenylene amini ⁇ dyes and tetrakis phenylene amini ⁇ dyes Or zwitterion compounds thereof.
  • the first polarizer protective film may be polyethylene terephthalate (PET), cyclic olefin polymer (COP) or triacetylcellulose (TAC) film.
  • PET polyethylene terephthalate
  • COP cyclic olefin polymer
  • TAC triacetylcellulose
  • the polarizing plate may have a light transmittance of about 30% or more at a wavelength of 950 nm in the non-display area provided with the light blocking layer.
  • the polarizing plate may have an OD value of about 2.0 or more in a visible light region in the non-display region provided with the light blocking layer.
  • the organic dye may be represented by any one of the following Chemical Formula 1, Chemical Formula 2, and Chemical Formula 3:
  • R is each independently an alkylene group having 1 to 5 carbon atoms
  • R 1 is each independently H + , a monovalent cation of an alkali metal, an alkylammonium monovalent cation or an ammonium monovalent cation
  • X - is NO 3 -, Cl -, Br -, BF 4 -, PF 6 -, or SbF 6 - a
  • R are each independently an alkylene group having 1 to 5 carbon atoms
  • R 1 are each independently H + , an alkali metal monovalent cation, alkylammonium monovalent cation or ammonium monovalent cation
  • X - is NO 3 -, Cl -, Br -, BF 4 -, PF 6 -, or SbF 6 - a
  • R are each independently an alkylene group having 1 to 5 carbon atoms
  • R 1 are each independently H + , an alkali metal monovalent cation, alkylammonium monovalent cation or ammonium monovalent cation
  • X - is NO 3 -, Cl -, Br -, BF 4 -, PF 6 -, or SbF 6 - is).
  • R is each independently an ethylene group
  • R 1 is each independently H + , Na + , K + , NH 4 + , (R 5 ) 4 N + , (R 5 ) 3 NH + , ( R 5 ) 2 NH 2 + , where R 5 may be an alkyl group having 1 to 10 carbon atoms.
  • the organic dye or zwitterionic compound thereof may be included in about 30% to about 80% by weight of the light-shielding layer.
  • the light-shielding layer may further include one or more pigments among mixed pigments of carbon black and silver-tin-containing alloys.
  • the light-shielding layer may include the organic dye or a mixture of zwitterionic compounds and the pigment in an amount of about 30% to about 80% by weight.
  • the organic dye or zwitterionic compound thereof is contained in about 10% to about 50% by weight of the light-shielding layer, and the pigment may be included in about 10% to about 50% by weight in the light-shielding layer .
  • the light-blocking layer may be formed of a composition for a light-curing type or a heat-curing type light-blocking layer containing the organic dye or zwitterionic compound thereof.
  • the composition for the light-shielding layer may further include a binder resin and an initiator.
  • composition for the light-blocking layer may further include one or more of reactive unsaturated compounds, solvents, and additives.
  • the light shielding layers may be formed of a printing pattern formed to be spaced apart from each other.
  • the thickness of the light blocking layer may be about 50% to about 100% of the thickness of the adhesive layer.
  • a second polarizer protective film may be further formed on the lower surface of the polarizer.
  • the optical display device of the present invention may include the polarizing plate of the present invention.
  • the present invention provides a polarizing plate having a light-shielding layer having an excellent light-shielding property and an excellent light transmittance in the infrared region, thereby increasing the alignment mark recognition rate during cutting after bonding with a panel, thereby effectively cutting.
  • the present invention provides a polarizing plate having a light-shielding layer excellent in adhesion to the polarizer protective film.
  • the present invention provides a polarizing plate having a light-blocking layer having excellent adhesion to a polarizer and an adhesive layer among polarizing plates.
  • the present invention provides a polarizing plate excellent in reliability and durability.
  • FIG. 1 is a plan view of a polarizing plate according to an embodiment of the present invention.
  • Figure 2 is a cross-sectional view I-II of the polarizing plate of an embodiment of the present invention.
  • FIG 3 is an enlarged cross-sectional view of a printed pattern formed on a light shielding layer in I-II of the polarizing plate according to an embodiment of the present invention.
  • FIG. 4 is an enlarged cross-sectional view of a printed pattern formed on a light shielding layer among polarizing plates according to another embodiment of the present invention.
  • the polarizing plate of the present invention may be composed of a display area and a non-display area surrounding the outside of the display area.
  • the polarizing plate may include a polarizer, an adhesive layer sequentially stacked on the upper surface of the polarizer, and a first polarizer protective film.
  • a light shielding layer is further formed on the polarizing plate.
  • the light shielding layer forms at least part of the non-display area, and is formed on the lower surface of the first polarizer protective film and is formed in the adhesive layer, so that the polarizer, light shielding layer, adhesive layer, and first polarizer protective film are integrally formed.
  • a light shielding layer is formed in the adhesive layer, so that the optical display device can be thinned.
  • the polarizing plate may have a light transmittance of 30% or more at a wavelength of 950 nm in the non-display area provided with a light blocking layer. In the light transmittance range, the polarizing plate can be effectively cut by increasing the alignment mark recognition rate in the process of cutting the polarizing plate according to the panel size after bonding the polarizing plate to the panel.
  • the polarizing plate may have an OD value of about 2.0 or more in a visible light region in the non-display region provided with a light blocking layer. In the OD value range, the light blocking layer may serve as a non-display area.
  • the polarizing plate may have a light transmittance at a wavelength of 950 nm of about 30% to about 80%, more preferably about 30% to about 70% in the non-display area provided with the light blocking layer.
  • the polarizing plate may have an OD value of about 2.0 to about 4.0, more preferably about 2.0 to about 3.0, in the visible light region in the non-display region provided with the light blocking layer.
  • the OD value is about 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9 or 4.0 days You can.
  • the polarizing plate secures the light transmittance at the above-mentioned wavelength 950 nm and the light-shielding layer secures the above-described OD value, the adhesion of the light-shielding layer to the first polarizer protective film, the polarizer and the adhesive layer of the light-shielding layer
  • the effect of the present invention can be obtained by including the specific dye described below in the light-shielding layer.
  • the light shielding layer not only has excellent adhesion to the first polarizer protective film, but also excellent adhesion to the polarizer and the adhesive layer, thereby improving reliability and durability.
  • FIGS. 1 and 2 are plan views of a polarizing plate according to an embodiment of the present invention
  • FIG. 2 is a cross-sectional view of a polarizing plate according to an embodiment of the present invention.
  • the polarizing plate 10 includes a display area S1; And a non-display area S2 formed outside the display area S1 to surround the edge.
  • the display area S1 is a light transmissive area
  • the non-display area S2 is a light nontransmissive area.
  • the display area S1 and the non-display area S2 are integrally formed.
  • the non-display area S2 is formed of a light blocking layer.
  • the light-shielding layer may be formed of a composition for a light-shielding layer comprising the dye described below.
  • the composition for a light-shielding layer is explained in full detail below.
  • the non-display area S2 is formed to surround the entire edge of the display area S1, but the present invention is not limited thereto.
  • the non-display area may be located only on both sides of the display area, or the non-display area may be located only on the left edge, the right edge, the top edge, or the bottom edge of the display area.
  • the polarizing plate 10 the adhesive layer 310, the first polarizer protective film 200 is sequentially formed on the upper surface of the polarizer 100, the second polarizer protection on the lower surface of the polarizer 100
  • the film 400 is formed.
  • the polarizing plate may be a polarizing plate disposed on the viewer side when mounted on the optical display device. Therefore, the adhesive layer 310 and the first polarizer protective film 200 are sequentially formed on the light exit surface of the polarizer 100.
  • the present invention is not limited to this.
  • a light blocking layer 320 is formed on the lower surface of the first polarizer protective film 200 and the adhesive layer 310.
  • the light blocking layer 320 is formed to directly contact the lower surface of the first polarizer protective film 200 and the adhesive layer 310. 2, the light blocking layer 320 is formed to surround the edge of the adhesive layer 310.
  • the light blocking layer 320 may form at least a part of the non-display area S2, preferably all of the non-display area.
  • the light blocking layer 320 is formed on the light exit surface of the polarizer 100. Therefore, a display function may be implemented in a portion of the polarizing plate where the light blocking layer 320 is not formed. However, a case in which the light blocking layer 320 is formed on the light incident surface of the polarizer 100 may also be included in the scope of the present invention.
  • the polarizing plate 10 may have a light transmittance of about 30% or more at a wavelength of 950 nm in a non-display area provided with a light blocking layer.
  • the polarizing plate 10 may have an OD value of about 2.0 or more in a visible light region in the non-display region provided with a light blocking layer.
  • the light transmittance range the polarizing plate can be effectively cut by increasing the alignment mark recognition rate in the process of cutting the polarizing plate according to the panel size after bonding the polarizing plate to the panel.
  • the light blocking layer may serve as a non-display area.
  • the polarizing plate may have a light transmittance of 30% to 80%, more preferably 30% to 70%, at a wavelength of 950 nm in the non-display area provided with the light blocking layer.
  • the polarizing plate 10 may have an OD value in the visible light region of 2.0 to 4.0, more preferably 2.0 to 3.0 in the non-display region provided with the light blocking layer. In the above range, it may be easy to simultaneously reach the light transmittance at a wavelength of 950 nm and the OD value that produces a light blocking effect, which can increase the alignment mark recognition rate.
  • the OD value is about 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9 or 4.0 days You can.
  • the light shielding layer 320 has excellent adhesion to the first polarizer protective film 200. Through this, it is possible to improve the reliability and durability of the polarizing plate.
  • the light shielding layer 320 is also excellent in adhesion to the polarizer 100 and the adhesive layer 310. Through this, it is possible to improve the reliability and durability of the polarizing plate.
  • the light-blocking layer is an organic dye, and may include one or more organic dyes of tris phenylene amini ⁇ dye, tetrakis phenylene amini ⁇ dye, or zwitterion compounds thereof.
  • the organic dye can ensure the light transmittance and OD value at a wavelength of 950 nm of the present invention when the light shielding layers described below are made of spaced apart from each other, adhesion to the first polarizer protective film, polarizer, and adhesive layer It can be made to have excellent adhesion to.
  • the light-shielding layer may include one or more dyes of the following Chemical Formula 1, Chemical Formula 2, and Chemical Formula 3 or zwitterionic compounds thereof:
  • R is each independently an alkylene group having 1 to 5 carbon atoms
  • R 1 is each independently H + , a monovalent cation of an alkali metal, an alkylammonium monovalent cation or an ammonium monovalent cation
  • X - is NO 3 -, Cl -, Br -, BF 4 -, PF 6 -, or SbF 6 - a
  • R are each independently an alkylene group having 1 to 5 carbon atoms
  • R 1 are each independently H + , an alkali metal monovalent cation, alkylammonium monovalent cation or ammonium monovalent cation
  • X - is NO 3 -, Cl -, Br -, BF 4 -, PF 6 -, or SbF 6 - a
  • R are each independently an alkylene group having 1 to 5 carbon atoms
  • R 1 are each independently H + , an alkali metal monovalent cation, alkylammonium monovalent cation or ammonium monovalent cation
  • X - is NO 3 -, Cl -, Br -, BF 4 -, PF 6 -, or SbF 6 - a
  • R is each independently an ethylene group.
  • R 1 is each independently Na + , K + , NH 4 + , (R 5 ) 4 N + , (R 5 ) 3 NH + , (R 5 ) 2 NH 2 + .
  • R 5 is an alkyl group having 1 to 10 carbon atoms.
  • the zwitterionic compound of Formula 1 may be represented by the following Formula 1-1:
  • the zwitterionic compound of Formula 2 may be represented by the following Formula 2-1:
  • the zwitterionic compound of Formula 3 may be represented by the following Formula 3-1:
  • the light-shielding layer includes the dye, so that the light transmittance of 30% or more at a wavelength of 950 nm of the polarizing plate in the non-display area where the light-shielding layer is provided, and the OD value of the polarizing plate in the non-display area provided with the light-shielding layer is 2.0 or more. It can be made, it can be excellent adhesion to the first polarizer protective film, adhesion to the polarizer and the adhesive layer.
  • the dye may be synthesized by a conventional method known to those skilled in the art or commercially available products (for example, Specter TM 130, Spectre TM 140, Spectre TM 150, Spectre TM 160, or more Epolin).
  • the dye may be included in about 30% to about 80% by weight of the light shielding layer, preferably about 40% to about 80% by weight.
  • the light-shielding layer can have a light-shielding effect, adhesion to a first polarizer protective film, adhesion to a polarizer and an adhesive layer is excellent, and light transmittance at a wavelength of 950 nm can be secured.
  • the dye is about 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79 or 80% by weight.
  • the light-shielding layer may include a composition for a light-shielding layer containing the dye or may be formed of a composition for a light-shielding layer containing the dye.
  • the composition for the light-shielding layer is one or more dyes of the above Chemical Formula 1, Chemical Formula 2, Chemical Formula 3 or zwitterionic compounds thereof; Binder resin; And initiators.
  • at least one of the dyes of Formula 1, Formula 2, and Formula 3 or the amphoteric ion compound thereof is based on solid content, from about 30% to about 80% by weight of the composition for the light-shielding layer, preferably from about 40% by weight to about 80% by weight.
  • the light-shielding layer may have a light-shielding effect, excellent adhesion to the first polarizer protective film, and light transmittance at a wavelength of 950 nm.
  • the binder resin may include acrylic resin, polyimide resin, polyurethane resin, or a combination thereof.
  • the acrylic resin include methacrylic acid / benzyl methacrylate copolymer, methacrylic acid / benzyl methacrylate / styrene copolymer, methacrylic acid / benzyl methacrylate / 2-hydroxyethyl methacrylate copolymer, and meth And acrylic acid / benzyl methacrylate / styrene / 2-hydroxyethyl methacrylate copolymer.
  • the polyurethane-based resin may be an aliphatic polyurethane-based resin.
  • the acrylic resin may be an acrylic pressure-sensitive adhesive resin. However, it is not limited to this.
  • the reactive unsaturated compound is a compound having a lower weight average molecular weight than the binder resin, and may include at least one of a photocurable unsaturated compound and a thermosetting unsaturated compound.
  • Reactive unsaturated compounds include ethylene glycol diacrylate, ethylene glycol dimethacrylate, diethylene glycol diacrylate, triethylene glycol diacrylate, triethylene glycol dimethacrylate, 1,6-hexanediol diacrylate, 1 , 6-hexanediol dimethacrylate, pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol penta (meth) acrylate, dipentaerythritol hexa (meth) acrylic Acrylate, bisphenol A epoxy (meth) acrylate, ethylene glycol monomethyl ether (meth) acrylate, trimethylolpropane
  • the initiator may include at least one of a photopolymerization initiator and a thermal curing initiator.
  • a photopolymerization initiator include, but are not limited to, acetophenone compounds, benzophenone compounds, thioxanthone compounds, benzoin compounds, triazine compounds, morpholine compounds, and the like.
  • thermosetting initiator for example, 1,3-bis (hydrazinocarbonoethyl-5-isopropyl hydantoin) as a hydrazide compound, 1-cyanoethyl-2-phenylimidazole as an imidazole compound , N- [2- (2-methyl-1-imidazolyl) ethyl] urea, 2,4-diamino-6- [2'-methylimidazolyl- (1 ')]-ethyl-s-tri Azine, N, N'-bis (2-methyl-1-imidazolylethyl) urea, N, N '-(2-methyl-1-imidazolylethyl) -adipoamide, 2-phenyl-4- Methyl-5-hydroxymethylimidazole, 2-phenyl-4,5-dihydroxymethylimidazole, tetrahydrohydrophthalic acid, ethylene glycol-bis (anhydrotrimellitate), melamine as
  • the solvent examples include glycol ethers such as ethylene glycol methyl ether, ethylene glycol ethyl ether, and propylene glycol methyl ether; Cellosolve acetates such as methyl cellosolve acetate, ethyl cellosolve acetate, and diethyl cellosolve acetate; Carbitols such as methylethyl carbitol, diethyl carbitol, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol dimethyl ether, diethylene glycol methylethyl ether, and diethylene glycol diethyl ether; Propylene glycol alkyl ether acetates such as propylene glycol methyl ether acetate and propylene glycol propyl ether acetate; And the like, but is not limited thereto.
  • glycol ethers such as ethylene glycol methyl ether, ethylene glycol ethyl ether
  • the composition for the light-shielding layer is from about 1% to about 50% by weight of at least one dye of Formula 1, Formula 2, Formula 3 or zwitterionic compound thereof, from about 0.5% to about 20% by weight of the binder resin %, From about 0.1% to about 10% by weight of the initiator and the balance of solvent. While forming a thin light-shielding layer in the above range, it can exhibit an excellent light-shielding effect.
  • the composition for the light-shielding layer is from about 1% to about 50% by weight of at least one dye of Formula 1, Formula 2, Formula 3 or zwitterionic compound thereof, about 0.5 to about 20% by weight of the binder resin,
  • the reactive unsaturated compound may contain from about 1% to about 20% by weight of the initiator, from about 0.1% to about 10% by weight of the initiator, and the balance of the solvent. While forming a thin light-shielding layer in the above range, it can exhibit an excellent light-shielding effect.
  • the composition for the light-shielding layer may include about 0.1 wt% to about 1 wt% of other additives in addition to the above-mentioned components, and the other additives may include a silane coupling agent, etc., thereby helping UV curing of the light-shielding layer You can.
  • the composition for a light-shielding layer may include one or more organic dyes of Formula 1, Formula 2, and Formula 3, or zwitterion compounds thereof (hereinafter, dyes); One or more inorganic pigments (hereinafter, pigments) among mixed pigments of carbon black and silver-tin-containing alloys; Binder resin; And initiators.
  • dyes organic dyes of Formula 1, Formula 2, and Formula 3, or zwitterion compounds thereof
  • pigments one or more inorganic pigments among mixed pigments of carbon black and silver-tin-containing alloys
  • Binder resin And initiators.
  • Carbon black may include, for example, graphitized carbon, furnace black, acetylene black, and ketjen black, but is not limited thereto.
  • the pigment may be included as a pigment dispersion, but is not limited thereto.
  • the light shielding layer composition may further include one or more of a reactive unsaturated compound, a solvent, and an additive.
  • the dye may be included in an amount of about 20% to about 90% by weight, and the pigment in an amount of about 10% to about 80% by weight.
  • the light-shielding layer may have a light-shielding effect, excellent adhesion to the first polarizer protective film, and light transmittance at a wavelength of 950 nm.
  • the dye is about 50% to about 90% by weight
  • the pigment is about 10% to about 50% by weight
  • more preferably the dye is about 55% to about 90% by weight
  • the pigment is about 10% to about 45% by weight.
  • the mixture of the dye and the pigment may be included in about 30% by weight to about 80% by weight, preferably about 40% by weight to about 80% by weight of the composition for the light shielding layer based on solid content.
  • the light-shielding layer may have a light-shielding effect, excellent adhesion to the first polarizer protective film, and light transmittance at a wavelength of 950 nm.
  • the light-shielding layer comprises a mixture of the dye and the pigment
  • the dye is from about 10% to about 50% by weight of the light-shielding layer, preferably from about 30% to about 50% by weight
  • the pigment is the light-shielding 10 to 50% by weight of the layer, preferably from about 20% to about 40% by weight.
  • the light-shielding layer may have a light-shielding effect, excellent adhesion to the first polarizer protective film, and light transmittance at a wavelength of 950 nm.
  • binder resin The details of the binder resin, initiator, reactive unsaturated compound, solvent, and additive are as described above.
  • the composition for the light-shielding layer is 1 to 50% by weight of the mixture of the dye and the pigment, about 0.5% to about 20% by weight of the binder resin, about 0.1% to about 10% by weight of the initiator, and the balance Solvents. While forming a thin light-shielding layer in the above range, it can exhibit an excellent light-shielding effect.
  • the composition for the light-shielding layer is 1 to 50% by weight of the mixture of the dye and the pigment, about 0.5% to about 20% by weight of the binder resin, about 1% to about 20% by weight of the reactive unsaturated compound, initiator It may include about 0.1% to about 10% by weight and the balance of the solvent. While forming a thin light-shielding layer in the above range, it can exhibit an excellent light-shielding effect.
  • the composition for the light-shielding layer may include about 0.1 wt% to about 1 wt% of other additives in addition to the above-mentioned components, and the other additives may include a silane coupling agent, etc., thereby helping UV curing of the light-shielding layer You can.
  • the thickness of the light blocking layer 320 may be smaller than or equal to the thickness of the adhesive layer 310.
  • the thickness of the light blocking layer 320 may be about 50% to about 100% of the thickness of the adhesive layer 310. In the above range, it can be included in the adhesive layer, it can be thinned polarizing plate.
  • the thickness of the light shielding layer 320 may be about 0.1 ⁇ m to about 4 ⁇ m, preferably about 1.0 ⁇ m to about 4.0 ⁇ m. In the above range, it can be included in the adhesive layer, it is possible to secure the light-shielding property, it is possible to thin the polarizing plate.
  • the light blocking layer 320 is formed of a printing pattern formed to be spaced apart from each other.
  • the print pattern will be described in detail with reference to FIG. 3.
  • a print pattern 320 ′ is at a point where a contact point between the display area S1 and the non-display area S2 is a, another print pattern 320 ′ immediately adjacent to the print pattern 320 ′.
  • W the distance between a and b is called W.
  • H may be about 200 ⁇ m or less, for example, about 0.1 ⁇ m to about 200 ⁇ m, and for example, about 5 ⁇ m to about 200 ⁇ m. In the above range, a light-shielding effect is obtained, and the uniformity between the display area and the non-display area is high, so that a difference in visibility is small and RGB in a pixel may not be recognized.
  • the print pattern may satisfy the relationship of Equation 1 below:
  • W may be from about 10 ⁇ m to about 500 ⁇ m, for example from about 10 ⁇ m to about 490 ⁇ m, and for example from about 10 ⁇ m to about 480 ⁇ m.
  • the boundary surface between the display area and the non-display area means a virtual surface connecting a plurality of points of a print pattern closest to the display area among print patterns formed on the non-display area.
  • the printing patterns 320 ' are spaced apart from each other.
  • the separation distance T between the print patterns 320 ′ may be about 1 ⁇ m to about 50 ⁇ m, for example, about 5 ⁇ m to about 30 ⁇ m. Within the above range, a light blocking effect may be obtained and uniformity may not be affected.
  • the length of the maximum long axis 320'L of the print pattern 320 ' may be about 50 ⁇ m to about 600 ⁇ m, for example, about 100 ⁇ m to about 500 ⁇ m.
  • FIG. 3 shows a case where the cross-sectional shape of the print pattern 320 'is a regular hexagonal shape.
  • the cross-sectional cross-sectional shape may be an N-shape (N is an integer of 3 to 10) such as a rhombus, a regular hexagon, an octagonal shape, a circular shape, an elliptical shape, an amorphous shape, or the like.
  • the length of one side constituting the cross-sectional shape of the printing pattern 320 'in the plane direction may be the same or different, and may be about 10 ⁇ m to about 400 ⁇ m, for example, about 50 ⁇ m to about 300 ⁇ m.
  • the planar cross-section of the print pattern may be rhombus, hexagonal or amorphous.
  • the print patterns formed on the light blocking layer 320 are the same size and have the same shape.
  • the print patterns may have different sizes or different shapes from each other.
  • FIG. 3 shows a case in which the print pattern formed on the light blocking layer 320 is formed as a single layer.
  • print patterns of different shapes may be formed in multiple layers. This will be described with reference to FIG. 4 below.
  • the light-shielding layer is for a light-shielding layer supported on a first polarizer protective film after supporting the composition for a light-shielding layer on a gravure roll (for example, copper plate) processed to form a printing pattern of the light-shielding layer, and removing the composition for a light-shielding layer on a non-printed surface with a doctor blade It can be formed by transferring and curing the composition.
  • a gravure roll is formed with a printing pattern for forming a light-shielding layer.
  • the adhesive layer 310 is interposed between the polarizer 100 and the first polarizer protective film 200 to bond the polarizer 100 and the first polarizer protective film 200 to each other.
  • the adhesive layer 310 is directly formed on each of the polarizer 100 and the first polarizer protective film 200.
  • the adhesive layer 310 may be formed on at least one surface of each of the polarizer 100 and the first polarizer protective film 200. That is, the polarizer 100 and the first polarizer protective film 200 face each other, and they may have substantially the same area on a horizontal cross-section. That is, they may completely overlap each other on the horizontal cross-section, in the case of the adhesive layer 310, may be formed only on a part of them, and more specifically, the adhesive layer 310 is the polarizer 100 and the first polarizer protective film 200 It may be arranged in the shape of an island only in the center except the edge of the.
  • the adhesive layer 310 allows the polarizer 100 and the first polarizer protective film 200 to adhere or bond to each other, and for this purpose, may be formed of a photocurable adhesive.
  • the thickness of the adhesive layer 310 may be about 2 ⁇ m to about 5 ⁇ m. In the above range, a gap between the polarizer 100 and the first polarizer protective film 200 by the light blocking layer 320 of the present invention may be filled, thereby improving durability of the polarizing plate. That is, it is possible to minimize the deviation between the region where the light shielding layer 320 exists and the region that does not exist between the polarizer 100 and the first polarizer protective film 200.
  • the first polarizer protective film 200 may be formed on one surface of the adhesive layer 310 to support the adhesive layer 310 and the polarizer 100.
  • the first polarizer protective film 200 may be an optically transparent protective film.
  • the first polarizer protective film includes polyester terephthalate (PET), polybutylene terephthalate, polyethylene naphthalate, polybutylene naphthalate, and the like, acrylic, cyclic olefin polymer (COP), and triacetyl Cellulose esters including cellulose (TAC), polyvinyl acetate, polyvinyl chloride (PVC), polynorbornene, polycarbonate (PC), polyamide, polyacetal, polyphenylene ether, polyphenylene sulfide, poly It may be a film formed of one or more of sulfone, polyether sulfone, polyarylate, polyimide. Preferably, it may be polyethylene terephthalate (PET), cyclic olefin
  • the first polarizer protective film 200 may have a thickness of about 30 ⁇ m to about 120 ⁇ m, specifically about 20 ⁇ m to about 80 ⁇ m. It can be used in the optical display device in the above range.
  • the first polarizer protective film 200 may be an isotropic film or a retardation film.
  • It may include a film.
  • the retardation film may include a film having an in-plane retardation Re of greater than about 5 nm at a wavelength of 550 nm, for example, about 10 nm to about 15,000 nm.
  • the second polarizer protective film 400 may have the same or different material, thickness, and phase difference from the first polarizer protective film 200 described above.
  • the polarizer 100 may be formed on the lower surface of the adhesive layer 310 to polarize incident light.
  • the polarizer 100 may include a polarizer.
  • the polarizer may include conventional polarizers known to those skilled in the art.
  • the polarizer 100 may have a thickness of about 5 ⁇ m to about 40 ⁇ m. In the above range, it can be used in an optical display device.
  • an adhesive layer may be further formed on the lower surface of the second polarizer protective film 400.
  • a functional layer may be further formed on the upper surface of the first polarizer protective film 200. The functional layer provides additional functions to the polarizing plate, anti-finger, low reflection, anti-glare, anti-contamination, anti-reflection, One or more of diffusion and refraction functions may be provided.
  • the polarizing plate of this embodiment is substantially the same as the polarizing plate of an embodiment of the present invention, except that the printing pattern of FIG. 4 is provided instead of the printing pattern of FIG. 3.
  • the light blocking layer may include a printing area composed of a plurality of printing patterns 323.
  • the remaining areas 324 of the light blocking layer 320 except for the print area correspond to an unprinted area.
  • the printing patterns 323 are formed spaced apart from each other.
  • the print pattern 323 is composed of a first print pattern 321 and a second print pattern 322 formed on the first print pattern 321 (preferably on an upper surface).
  • the second printing pattern 322 may be directly formed on the first printing pattern 321.
  • the second print pattern 322 has a different pattern shape than the first print pattern 321.
  • the second printing pattern 322 has a smaller area than the first printing pattern 321.
  • the point at which the interface between the display area S1 and the non-display area S2 contacts the first print pattern 321 is a, and the second print pattern closest to the interface between the display area S1 and the non-display area S2 ( When the point of 322) is a ', the shortest distance ⁇ L between a and a' is about 200 ⁇ m or less, preferably about 0.1 ⁇ m to about 200 ⁇ m, more preferably about 10 ⁇ m to about 200 ⁇ m Can be. In the above range, a light-shielding effect is obtained, and the uniformity between the display area and the non-display area is high, so that a difference in visibility is small and RGB in a pixel may not be recognized.
  • the difference between the length of the longest axis 321L of the first print pattern 321 and the length of the longest axis 322L of the second print pattern 322 is about 200 ⁇ m or less, preferably about 0.1 ⁇ m to It may be about 200 ⁇ m, more preferably about 10 ⁇ m to about 200 ⁇ m. In the above range, a light-shielding effect can be obtained, and the uniformity between the display area and the non-display area is high, so that there is little difference in visibility and RGB in the pixel may not be recognized.
  • the length of the maximum long axis 321L of the first print pattern 321 is about 50 ⁇ m to about 600 ⁇ m, preferably about 100 ⁇ m to about 500 ⁇ m, and the maximum long axis 322L of the second print pattern 322 is It may be about 50 ⁇ m to about 500 ⁇ m, preferably about 50 ⁇ m to about 350 ⁇ m.
  • the first printing pattern 321 may have a hexagonal shape
  • the second printing pattern 322 may have a rhombus shape.
  • the present invention is not limited to this.
  • the first print pattern may be an N-shape such as an octagon shape (N is an integer of 3 to 10), a circular shape, an oval shape, an amorphous shape, etc.
  • the second print pattern may be an N-shape shape such as an octagon shape (N is 3 to 10), circular, elliptical, amorphous, and the like.
  • the length of one side constituting the first print pattern 321 may be the same or different, and may be, for example, about 10 ⁇ m to about 400 ⁇ m, preferably about 50 ⁇ m to about 300 ⁇ m.
  • the length of one side constituting the second printing pattern 322 may be the same or different, and may be, for example, about 10 ⁇ m to about 400 ⁇ m, preferably about 50 ⁇ m to about 300 ⁇ m.
  • the length of one side constituting the first printing pattern 321 may be the same or different from the length of one side constituting the second printing pattern 322.
  • the length of one side constituting the first printing pattern 321 may be the same as the length of one side constituting the second printing pattern 322.
  • the first print pattern 321 is a regular hexagon
  • the first print pattern 321 is arranged in a honeycomb structure
  • the second print pattern 322 can be a rhombus or square.
  • the area of the second print pattern 322 may be smaller than the area of the first print pattern 321. Only then, the second print pattern 322 can be formed on the first print pattern 321. Preferably, the area ratio of the area of the first print pattern 321 to the area of the second print pattern 322 may be greater than 1, preferably greater than about 100% and less than about 3000%. In the above range, the uniformity between the display area and the non-display area is high, so there is little difference in visibility and RGB in the pixel may not be recognized.
  • the intersection of the first print pattern 321 and the second print pattern 322 may be at least two, preferably three or more.
  • the uniformity between the display area and the non-display area is high, so there is little difference in visibility and RGB in the pixel may not be recognized.
  • the point where the first print pattern 321 comes into contact with the boundary surface between the display area S1 and the non-display area S2 is a, and the first print pattern 321 immediately adjacent to the first print pattern 321 has a display area ( When b is a point in contact with the interface between S1) and the non-display area S2, the distance between a and b is called W.
  • the closest point from a in the first print pattern 321 is c, and the closest point from b in the first print pattern 321 is d, from the interface between the display area S1 and the non-display area S2
  • H The minimum value of the distance to c and the distance from the interface between the display area S1 and the non-display area S2 to d.
  • H may be about 200 ⁇ m or less, for example, about 0.1 ⁇ m to about 200 ⁇ m, preferably about 5 ⁇ m to about 200 ⁇ m. In the above range, a light-shielding effect is obtained, and the uniformity between the display area and the non-display area is high, so that a difference in visibility is small and RGB in a pixel may not be recognized.
  • the print pattern may satisfy the relationship of Equation 1 below:
  • W may be about 10 ⁇ m to about 500 ⁇ m, preferably about 10 ⁇ m to about 490 ⁇ m, for example about 10 ⁇ m to about 480 ⁇ m.
  • W> H For example, W> H.
  • the first print pattern is a regular hexagon
  • the first print pattern is arranged in a honeycomb structure
  • the second print pattern can be a rhombus or square or a regular hexagon.
  • the printing patterns 323 are formed spaced apart from each other.
  • the separation distance T between the print patterns 323 may be about 1 ⁇ m to about 50 ⁇ m, preferably about 5 ⁇ m to about 30 ⁇ m. Within the above range, a light blocking effect may be obtained and uniformity may not be affected.
  • an optical display device including the polarizing plate described above can be provided.
  • the optical display device may include a liquid crystal display device, an organic light emitting device display device, and the like.
  • the polarizing plate of the present invention may be disposed on the viewing side polarizing plate among the liquid crystal display devices.
  • composition for the light-shielding layer was prepared in the same manner as in Example 1, except that the types and / or contents of each component in the light-shielding layer composition were changed as shown in Table 1 below.
  • composition for the light-shielding layer was prepared in the same manner as in Example 1, except that the types and / or contents of each component in the light-shielding layer composition were changed as shown in Table 1 below.
  • Polarizing plates were prepared using the composition for light-shielding layers of Examples and Comparative Examples.
  • a composition for a light-blocking layer was coated with a gravure coating on the edge portion of one side of a polyethylene terephthalate (PET) film to form a first printing pattern.
  • the printing rolls are regular hexagons in a first printing pattern, and they are spaced apart from each other and have a honeycomb structure in a honeycomb shape.
  • the first printing pattern is a regular hexagon having a length of 50 ⁇ m on one side.
  • a second printing pattern was formed with another printing roll.
  • the printing roll has a rhombus as a second printing pattern and a length of one side is 50 ⁇ m.
  • Example 1 Example 3, Example 5, and Comparative Example 1, the solvent was removed at 85 ° C. for 1 minute, and then exposed to 650 mJ light using a metal halide exposure machine and cured to form a light shielding layer (thickness: 2 ⁇ m).
  • Example 2 Example 4, Example 6, and Comparative Example 2, a light-blocking layer (thickness: 2 ⁇ m) was formed by thermal curing at 85 ° C. for 2 minutes.
  • a polyvinyl alcohol film (thickness: 60 ⁇ m, degree of polymerization: 2400, saponification degree: 99.9%, VF-PS6000, Kurarei, Japan) was swollen in an aqueous solution at 25 ° C, and stretched while dyed in a dyeing tank containing iodine ion at 30 ° C. .
  • the dyed polyvinyl alcohol film was further stretched in an aqueous solution of boric acid at 55 ° C. so that the final draw ratio was 6 times.
  • the obtained polyvinyl alcohol film was dried in a chamber at 50 ° C. for 3 minutes to prepare a polarizer (thickness: 12 ⁇ m).
  • Adhesion 1 Specimens were prepared by attaching to the glass plate via the adhesive layer (OS-207, Soken) of the polarizing plates prepared in Examples and Comparative Examples. Among the non-display areas of the polarizing plate, the degree of tearing was evaluated when a knife was inserted between the light-shielding layer-formed surface and the polarizer of the light-shielding layer-formed surface. And it evaluated according to Table 3 below. When evaluating adhesiveness 1, it should be less than 1 point to be used because of its excellent reliability and durability.
  • Light-shielding property The light-shielding layer of the polarizing plate was measured using a UV filter using an optical densitometer (TD-904: Grettag Macbeth Co.) based on JIS K7651: 1988. Evaluation in the light-shielding layer was determined by absorbance values at a wavelength of 550 nm of a UV-visible spectrophotometer (JASC0-750). It was evaluated as good when the absorbance value was 0.3 or more, and poor when the absorbance value was less than 0.3.
  • OD was measured for the polarizing plate.
  • X-Rite 300 was measured for the non-display area in which the light shielding layer was formed in the polarizing plate.
  • Adhesion 2 (unit: piece): Adhesion 2 was evaluated by the (Cross hatch cut) evaluation method.
  • a composition for a light-shielding layer was coated on one surface of a polyethylene terephthalate (PET) film and cured to form a light-shielding layer. Cut to a square size of length x width (100 mm x 100 mm) and cut only the light-shielding layer portion into 10 lengths and 10 lengths to prepare 100 fractions.
  • the adhesive tape was adhered onto the light-shielding layer and the number of remaining fractions was not counted when vertically released. The greater the number of remaining fractions, the better the adhesion of the light-shielding layer to the protective film. When the number of remaining fractions should be 95 or more, the polarizer can be used because of its excellent reliability and durability.
  • the polarizing plate of the present invention has excellent light-shielding property and excellent light transmittance at a wavelength of 950 nm, and thus can be effectively cut by increasing the alignment mark recognition rate during cutting after bonding with the panel.
  • the light-shielding layer is excellent in adhesion to the polarizer and the adhesive layer as well as the polarizer protective film.
  • Comparative Examples 1 to 4 which do not contain the dye of the present invention or include other types of organic dyes instead of the dye of the present invention, could not obtain all the effects of the present invention.

Abstract

L'invention concerne une plaque polarisante et un dispositif d'affichage optique la comprenant, la plaque polarisante étant constituée d'une zone d'affichage et d'une zone de non-affichage entourant la zone d'affichage, la plaque polarisante comprenant un polariseur, et une couche adhésive et un premier film de protection de polariseur empilés séquentiellement sur une surface du polariseur, et une couche de protection contre la lumière constituant au moins une partie de la zone de non-affichage est formée à l'intérieur de la couche adhésive et sur la surface inférieure du premier film de protection de polariseur, la couche de protection contre la lumière contenant un ou plusieurs colorants organiques de colorant à base de tris-phénylène-ammonium et de colorant à base d'ammonium de tétrakis phénylène ou un composé ionique amphotère de ceux-ci.
PCT/KR2019/011436 2018-10-02 2019-09-05 Plaque polarisante et dispositif d'affichage optique la comprenant WO2020071646A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2018-0117867 2018-10-02
KR1020180117867A KR102253712B1 (ko) 2018-10-02 2018-10-02 편광판 및 이를 포함하는 광학표시장치

Publications (1)

Publication Number Publication Date
WO2020071646A1 true WO2020071646A1 (fr) 2020-04-09

Family

ID=70055474

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2019/011436 WO2020071646A1 (fr) 2018-10-02 2019-09-05 Plaque polarisante et dispositif d'affichage optique la comprenant

Country Status (3)

Country Link
KR (1) KR102253712B1 (fr)
TW (1) TWI721586B (fr)
WO (1) WO2020071646A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI778825B (zh) * 2021-10-08 2022-09-21 友達光電股份有限公司 顯示裝置及其製作方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120127612A (ko) * 2010-01-27 2012-11-22 후지필름 가부시키가이샤 솔더 레지스트용 중합성 조성물 및 솔더 레지스트 패턴의 형성 방법
KR20140147531A (ko) * 2013-06-20 2014-12-30 동우 화인켐 주식회사 블랙 매트릭스용 감광성 수지 조성물, 이를 이용하여 제조된 블랙 매트릭스 및 이를 포함하는 표시 장치
KR20170086780A (ko) * 2016-01-19 2017-07-27 삼성에스디아이 주식회사 편광판 및 이를 포함하는 표시 장치
KR20180069520A (ko) * 2016-12-15 2018-06-25 엘지디스플레이 주식회사 광차단 패턴과 이를 포함하는 표시패널 및 표시장치
KR20180107268A (ko) * 2016-03-16 2018-10-01 후지필름 가부시키가이샤 경화성 조성물, 차광막, 컬러 필터, 패턴 형성 방법, 컬러 필터의 제조 방법, 고체 촬상 소자, 적외선 센서

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018024716A (ja) * 2014-12-26 2018-02-15 日立化成株式会社 光硬化性樹脂組成物、画像表示用装置及び画像表示用装置の製造方法
KR102112864B1 (ko) * 2016-12-21 2020-05-19 삼성에스디아이 주식회사 편광판 및 이를 포함하는 광학 표시 장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120127612A (ko) * 2010-01-27 2012-11-22 후지필름 가부시키가이샤 솔더 레지스트용 중합성 조성물 및 솔더 레지스트 패턴의 형성 방법
KR20140147531A (ko) * 2013-06-20 2014-12-30 동우 화인켐 주식회사 블랙 매트릭스용 감광성 수지 조성물, 이를 이용하여 제조된 블랙 매트릭스 및 이를 포함하는 표시 장치
KR20170086780A (ko) * 2016-01-19 2017-07-27 삼성에스디아이 주식회사 편광판 및 이를 포함하는 표시 장치
KR20180107268A (ko) * 2016-03-16 2018-10-01 후지필름 가부시키가이샤 경화성 조성물, 차광막, 컬러 필터, 패턴 형성 방법, 컬러 필터의 제조 방법, 고체 촬상 소자, 적외선 센서
KR20180069520A (ko) * 2016-12-15 2018-06-25 엘지디스플레이 주식회사 광차단 패턴과 이를 포함하는 표시패널 및 표시장치

Also Published As

Publication number Publication date
KR102253712B1 (ko) 2021-05-18
TWI721586B (zh) 2021-03-11
TW202014745A (zh) 2020-04-16
KR20200038143A (ko) 2020-04-10

Similar Documents

Publication Publication Date Title
WO2016175580A1 (fr) Film optique d'amélioration de rapport de contraste, plaque de polarisation le comprenant et dispositif d'affichage à cristaux liquides le comprenant
WO2018164348A1 (fr) Polariseur et dispositif d'affichage optique comprenant celui-ci
WO2019132242A1 (fr) Plaque polarisante et dispositif d'affichage optique la comprenant
WO2018221872A1 (fr) Plaque de polarisation, et dispositif d'affichage à cristaux liquides comprenant cette plaque
WO2015008925A1 (fr) Film polarisant et appareil d'affichage d'images le comprenant
WO2019031786A1 (fr) Élément optique, élément de polarisation et dispositif d'affichage
WO2016105017A1 (fr) Film optique et dispositif d'affichage à oled le comprenant
WO2017126883A1 (fr) Plaque polarisante et dispositif d'affichage optique la comprenant
WO2018155792A1 (fr) Film optique améliorant le rapport de contraste, plaque de polarisation le comprenant, et dispositif d'affichage à cristaux liquides le comprenant
WO2013094969A2 (fr) Plaque polarisante et dispositif d'affichage d'image la comprenant
WO2019083160A1 (fr) Film à différence de phase de cristaux liquides, plaque de polarisation pour un dispositif d'affichage électroluminescent comprenant ce dernier et dispositif d'affichage électroluminescent comprenant ce dernier
WO2013022256A2 (fr) Filtre optique
WO2020153803A1 (fr) Procédé de fabrication de plaque de polarisation et composition adhésive pour plaque de polarisation
WO2020071646A1 (fr) Plaque polarisante et dispositif d'affichage optique la comprenant
WO2020080757A1 (fr) Plaque polarisante, panneau à cristaux liquides et dispositif d'affichage
WO2020153640A1 (fr) Plaque de polarisation et dispositif d'affichage optique la comprenant
WO2016104976A1 (fr) Feuille optique, et plaque de polarisation et afficheur à cristaux liquides comportant cette feuille optique
WO2021177621A1 (fr) Plaque de polarisation pour dispositif d'affichage électroluminescent, et dispositif d'affichage électroluminescent la comprenant
EP3625596A1 (fr) Élément optique, élément de polarisation et dispositif d'affichage
WO2014088273A1 (fr) Plaque polarisante et dispositif d'affichage à cristaux liquides comportant cette plaque
WO2018194262A1 (fr) Film optique d'amélioration du rapport de contraste, plaque polarisante le comprenant et appareil d'affichage à cristaux liquides le comprenant
WO2014092326A1 (fr) Couche de déphasage, plaque de polarisation et plaque de polarisation et dispositif d'affichage d'image la comprenant
WO2018056688A1 (fr) Élément optique, élément de polarisation et dispositif d'affichage utilisant un film polymère
WO2023033409A1 (fr) Plaque de polarisation et dispositif d'affichage optique la comprenant
WO2013191418A1 (fr) Plaque de polarisation et dispositif d'affichage à cristaux liquides la comprenant

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: 19868824

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: 19868824

Country of ref document: EP

Kind code of ref document: A1