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WO2016122282A1 - Film antireflet, ainsi que plaque de polarisation et dispositif d'affichage le comprenant - Google Patents

Film antireflet, ainsi que plaque de polarisation et dispositif d'affichage le comprenant Download PDF

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Publication number
WO2016122282A1
WO2016122282A1 PCT/KR2016/001086 KR2016001086W WO2016122282A1 WO 2016122282 A1 WO2016122282 A1 WO 2016122282A1 KR 2016001086 W KR2016001086 W KR 2016001086W WO 2016122282 A1 WO2016122282 A1 WO 2016122282A1
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WIPO (PCT)
Prior art keywords
film
coating layer
glare
transparent film
transparent
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/KR2016/001086
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English (en)
Korean (ko)
Inventor
김헌
장영래
홍경기
장응진
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LG Chem Ltd
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LG Chem Ltd
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Publication date
Application filed by LG Chem Ltd filed Critical LG Chem Ltd
Priority to CN201680005773.6A priority Critical patent/CN107110998A/zh
Publication of WO2016122282A1 publication Critical patent/WO2016122282A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/11—Anti-reflection coatings
    • G02B1/111—Anti-reflection coatings using layers comprising organic materials
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements

Definitions

  • the present application relates to an anti-glare film.
  • the present application also relates to a polarizing plate and a display device including glare.
  • a display device As a display device is used not only for a TV or a computer but also for various uses such as a touch panel, a large screen, or a portable device, a display device has been developed to have various functions. Accordingly, attempts have been made to change or improve the structure of the device, to improve the performance of parts such as optical films, and to use additional parts such as functional optical films so that the display device provides various functions.
  • the liquid crystal panel of the conventional liquid crystal display device has a structure including a liquid crystal cell, a thin film transistor provided on one side of the liquid crystal cell and a color filter provided on the other side of the liquid crystal cell.
  • a color filter on TFT (COT) structure is used as a liquid crystal panel of a liquid crystal display device.
  • the stacking order of each configuration is illustrated in the apparatus having the COT structure in FIG. 1.
  • a liquid crystal panel having a structure in which a thin film transistor, a curling filter, and a liquid crystal cell are sequentially stacked is provided, and polarizing plates provided at both sides thereof.
  • One embodiment of the present application provides an anti-glare film having a minimum point of transmittance at 560 nm or more of the transmission spectrum between 500 nm and 800 nm.
  • the anti-glare film includes a transparent film and a coating layer provided on at least one surface of the transparent film, wherein the coating layer is 560 nm or more in the transmission spectrum between 500 nm and 800 nm It has a minimum point of permeability.
  • the coating layer includes a light absorber that absorbs at least a portion of wavelengths selected from 560 nm to 800 nm.
  • the transparent film, the coating layer or a laminated structure thereof has an anti-glare function.
  • the transparent film or the coating layer may further serve as a hard coating layer, an antireflection layer or a low reflection layer.
  • the anti-glare film includes a light absorbing agent that absorbs at least a portion of wavelengths selected from 560 nm to 800 nm dispersed in the transparent film and the transparent film.
  • the transparent film has an anti-glare function.
  • the anti-glare film is a transparent film; And a coating layer provided on the transparent film and having a lower refractive index than the transparent film, wherein the transparent film or the coating layer absorbs at least a portion of wavelengths selected from 560 nm to 800 nm, or 560
  • An additional layer is provided between the transparent film and the coating layer that includes a light absorber that absorbs at least some wavelengths selected from nm to 800 nm.
  • the anti-glare film is a transparent film; And a coating layer provided on the transparent film and having a lower refractive index than the transparent film, wherein the transparent film or the coating layer absorbs at least a portion of wavelengths selected from 560 nm to 800 nm, or 560
  • An additional layer comprising a light absorber absorbing at least a portion of wavelengths selected from nm to 800 nm is provided between the transparent film and the coating layer, wherein the transparent film may be a hard coat layer.
  • Another embodiment of the present application provides an anti-glare film having a transmittance of 60% to 96% for the standard light source D65.
  • the anti-glare film includes a transparent film and a coating layer provided on at least one surface of the transparent film, and the coating layer has a transmittance of 60% to 96% with respect to the standard light source D65.
  • the coating layer may include a black or blackening material.
  • the black material itself means black color
  • the blackening material means a material that can lower the transmittance due to absorption of light even though the black color material is not black.
  • the transparent film, the coating layer or a laminated structure thereof has an anti-glare function.
  • the coating layer having a transmittance of 60% to 96% for the transparent film or the standard light source D65 may serve as a hard coating layer, an antireflection layer, or a low reflection layer.
  • the anti-glare film includes a transparent film and a black or blackening material dispersed in the transparent film.
  • the transparent film has an anti-glare function.
  • the anti-glare film is a transparent film; And a coating layer provided on the transparent film and having a lower refractive index than the transparent film, wherein the transparent film or the coating layer includes a black or blackening material, or an additional layer including a black or blackening material. And between the coating layer.
  • the anti-glare film is a transparent film; And a coating layer provided on the transparent film and having a lower refractive index than the transparent film, wherein the transparent film or the coating layer includes a black or blackening material, or an additional layer including a black or blackening material is the transparent film. It is provided between and the coating layer, the transparent film may be a hard coating layer.
  • the anti-glare film according to the aforementioned exemplary embodiments is a polarizing plate protective film, a retardation film, a brightness enhancement film, or a surface protection film.
  • Another embodiment of the present application includes a polarizer, and a polarizing plate protective film provided on at least one surface of the polarizer, wherein the polarizing plate protective film provides a polarizing plate which is an anti-glare film according to the above-described embodiments do.
  • a display device comprising a polarizing plate including a protective film for a polarizing plate, wherein the anti-glare film according to the above-described embodiments is a protective film for the polarizer, or between a liquid crystal cell and a polarizing plate, or a surface facing the liquid crystal cell of the polarizing plate. It provides a display device which is provided on the opposite side of the.
  • the anti-glare film according to the embodiments described herein When applying the anti-glare film according to the embodiments described herein to a display device including a liquid crystal panel having a COT structure, contrast of the display, external black blackness by adjusting the transmission spectrum by the anti-glare film , Viewing angle and the like can be improved.
  • the anti-glare film when the anti-glare film is provided on the opposite side of the surface facing the backlight of the liquid crystal panel, it is possible to more effectively improve the external black luminous effect and the contrast reduction problem due to the increased reflectivity inside the panel. Therefore, the anti-glare film according to the exemplary embodiments described herein is applicable to not only a general TFT-LCD panel but also a color filter on TFT (COT) panel, an OLED panel, and the like, and has more effective characteristics for improving black vision.
  • COT color filter on TFT
  • FIG. 1 is a schematic view of a structure of a display device including a liquid crystal panel having a COT structure.
  • 2 to 5 show an example of applying the anti-glare film to the display device according to some embodiments of the present application.
  • Anti-glare film is characterized in that it has a minimum point of transmittance at 560 nm or more of the transmission spectrum between 500 nm and 800 nm.
  • Such an anti-glare film absorbs light having a wavelength of 560 nm or more, and thus it is possible to adjust the reflection color appearing when an external light source is reflected by the panel.
  • absorbing light of 560 nm or more may reduce the reflection color of the long wavelength, thereby improving the black visibility of the final panel.
  • black luminous means that the display looks black in the OFF state of the display.
  • the anti-glare film described above may be applied in various forms to various locations of the display device.
  • the anti-glare film comprises a transparent film and a coating layer provided on at least one side of the transparent film, the coating layer of transmittance at 560 nm or more of the transmission spectrum between 500 nm and 800 nm Has a minimum point.
  • the transparent film, the coating layer or a laminated structure thereof has an anti-glare function.
  • techniques known in the art may be used. For example, using a matrix resin and particles having different refractive indices to raise the internal haze of the coating layer, or to provide an antireflection function by using a non-flat structure of the surface of the coating layer, and to further introduce a low reflection layer or an antireflection layer on the layer. Can be.
  • the transparent film or the coating layer may further serve as a hard coating layer, an antireflection layer or a low reflection layer.
  • the transparent film means a film having a visible light transmittance of 60% or more, preferably 70% or more, more preferably 85% or more.
  • a film of various materials may be used as long as it does not adversely affect the optical properties of the display device.
  • a material capable of performing the specific function may be selected.
  • the anti-glare film is a protective film for a polarizing plate
  • a polarizing plate protective film material known in the art can be used as a transparent film.
  • the transparent film is triacetyl cellulose (TAC), cycloolefin polymer (COP), cycloolefin copolymer (COC), polyethylene terephthalate (PET), polypropylene (PP), polycarbonate (PC), polyimide Films containing one or two or more resins such as (PI) can be used.
  • TAC triacetyl cellulose
  • COP cycloolefin polymer
  • COC cycloolefin copolymer
  • PET polyethylene terephthalate
  • PP polypropylene
  • PC polycarbonate
  • the coating layer may include a light absorbing agent that absorbs at least a portion of wavelengths selected from 560 nm to 800 nm to have a minimum point of transmittance at 560 nm or more in the transmission spectrum between 500 nm and 800 nm. Any light absorbing agent that absorbs the wavelength within the above range can be used without limitation.
  • the light absorbing agent may have a maximum absorption wavelength in the range of 560 nm to 800 nm.
  • the light absorbing agent may have a maximum absorption wavelength in the range of 560 nm to 750 nm.
  • the light absorbing agent may have a maximum absorption wavelength in the range of 600 nm to 700 nm.
  • a dye or a pigment capable of absorbing a near infrared (Near IR) region may be used as the light absorbing agent, and one kind or a mixture of two or more kinds may be used.
  • Near IR near infrared
  • the content of the light absorbing agent may be determined according to the type of light absorbing agent and the optical properties according to other materials or structures of the coating layer.
  • the light absorbing agent may be used in an amount such that the absorption at the wavelength absorbed by the light absorbing agent is increased by at least 1% compared to before the light absorbing agent is added. In this case, it is advantageous to achieve the above-mentioned effect by adding the light absorber.
  • the light absorbing agent is preferably included in an amount less than or equal to 60% or more of the transmittance of the coating layer. In this case, it is possible to prevent the decrease in optical properties required for the display device.
  • the transmittance means the transmittance of the film by D65 (standard illuminant).
  • D65 standard illuminant
  • the transmittance can be measured using COH-400 (Nippon Denshoku, Inc.) and light source D65.
  • the light absorbing agent may be included in an amount of 10 ppm to 5 wt% or less based on the coating layer.
  • the coating layer may further include a binder resin.
  • a binder resin those known in the art may be used, and for example, (meth) acrylic resin may be used.
  • an additive may be added to the coating layer as necessary.
  • the coating layer may be a hard coating layer, an antireflection layer, an antiglare layer, or a low reflection layer, and in this case, an additive capable of providing a heart coating, an antireflection, an antiglare, or a low reflection may be added.
  • the type and amount of the additive may be applied to a technique known in the art.
  • the anti-glare film according to another embodiment of the present application includes a transparent film and a light absorbing agent that absorbs at least a portion of wavelengths selected from 560 nm to 800 nm dispersed in the transparent film.
  • the transparent film has an anti-glare function.
  • the above description may be applied to the configuration related to the transparent film, the light absorbing agent, and the anti-glare function.
  • the light absorbing agent may be included in an amount such that the absorption at the wavelength absorbed by the light absorbing agent is increased by 1% or more compared to before the light absorbing agent is added, or by an amount such that the transmittance of the anti-glare film is 60% or more.
  • the light absorbing agent may be included in 10 ppm or more and 5% by weight or less with respect to the anti-glare film.
  • Anti-glare film according to another embodiment of the present application has a transmittance of 60% to 96% for the standard light source D65.
  • the transmittance of the standard light source D65 is less than 60%, the transmittance of the entire display may be lowered, which may cause a problem of deterioration of brightness, which is effective in improving the black vision described above which is 96% or less.
  • the anti-glare film is a transparent film; And a coating layer provided on the transparent film and having a lower refractive index than the transparent film, wherein the transparent film or the coating layer absorbs at least a portion of wavelengths selected from 560 nm to 800 nm, or 560
  • An additional layer is provided between the transparent film and the coating layer that includes a light absorber that absorbs at least some wavelengths selected from nm to 800 nm.
  • the description regarding the transparent film and the light absorbing agent is as described above.
  • the anti-glare function may be expressed by the coating layer having the low refractive index.
  • the anti-glare film is a transparent film; And a coating layer provided on the transparent film and having a lower refractive index than the transparent film, wherein the transparent film or the coating layer absorbs at least a portion of wavelengths selected from 560 nm to 800 nm, or 560
  • An additional layer comprising a light absorber absorbing at least a portion of wavelengths selected from nm to 800 nm is provided between the transparent film and the coating layer, wherein the transparent film may be a hard coat layer.
  • the transparent film, the light absorbing agent and the anti-glare function is as described above.
  • the transparent film serves as a hard coating layer, weather resistance can be improved only by the anti-glare film.
  • the anti-glare film includes a transparent film and a coating layer provided on at least one side of the transparent film, and the coating layer includes a black or blackening material.
  • the transparent film, the coating layer or a laminated structure thereof has an anti-glare function.
  • the black or blackening material may be determined by a person skilled in the art in a range that does not adversely affect the physical properties, including the optical properties of the anti-glare film, and may vary depending on the type of the material or the components or film structure used with the material. .
  • the blacking or blackening material may be included in an amount of 10 ppm or more and 5% by weight or less with respect to the coating layer or the anti-glare film. If the coating layer is in a range such that the transmittance with respect to the standard light source D65 is 60% to 96%, the kind or content thereof is not limited.
  • the coating layer having a transmittance of 60% to 96% for the transparent film or the standard light source D65 may serve as a hard coating layer, an antireflection layer, or a low reflection layer.
  • inorganic particles organic particles and / or organic / inorganic hybrid particles may be used.
  • carbon black, vine black, lamp black, ivory black, titanium black, or the like may be used, but is not limited thereto.
  • the coating layer may further comprise a binder resin or additive if necessary. Description of the transparent film, the binder resin and the additive may be applied to the contents described in the above-described embodiments.
  • the coating layer having a transmittance of 60% to 96% with respect to the standard light source D65 is a hard coating layer, an antireflection layer, an antiglare layer, or a low reflection layer.
  • the anti-glare film includes a transparent film and a black or blackening material dispersed in the transparent film.
  • the transparent film has an anti-glare function.
  • the description of the transparent film, the black or blackening material, and the anti-glare function may be applied to the contents described in the above-described exemplary embodiments.
  • the anti-glare film is a transparent film; And a coating layer provided on the transparent film and having a lower refractive index than the transparent film, wherein the transparent film or the coating layer includes a black or blackening material, or an additional layer including a black or blackening material. And between the coating layer.
  • the description regarding the transparent film and the light absorbing agent is as described above.
  • the anti-glare function may be expressed by the coating layer having the low refractive index.
  • the anti-glare film is a transparent film; And a coating layer provided on the transparent film and having a lower refractive index than the transparent film, wherein the transparent film or the coating layer includes a black or blackening material, or an additional layer including a black or blackening material is the transparent film. It is provided between and the coating layer, the transparent film may be a hard coating layer.
  • the transparent film, the light absorbing agent and the anti-glare function is as described above.
  • the transparent film serves as a hard coating layer, weather resistance can be improved only by the anti-glare film.
  • the anti-glare film according to the above-described embodiments may be a protective film for a polarizing plate, a retardation film, a brightness enhancement film, or a surface protection film.
  • Anti-glare films may be coated on a substrate, or may be manufactured using a method known in the art, such as a casting method. Such films may be attached directly to end-use products such as electronics, or using adhesives or adhesives. Including a substrate can be applied to the end use product with or without the substrate.
  • the present invention is not limited thereto, and may be directly coated on components to be provided in an end use such as an electronic device.
  • the surface protection film is to protect the surface of the end-use products such as electronic devices, and may include a low reflection film or an anti-glare film, which may be formed by coating directly on the surface of the electronic product.
  • FIG. 2 Another embodiment of the present application includes a polarizer, and a polarizing plate protective film provided on at least one surface of the polarizer, the polarizing plate protective film provides a polarizing plate which is an anti-glare film according to the above-described embodiments.
  • the structure of the polarizing plate is illustrated in FIG. 2. According to Figure 2, the structure is provided with a protective film for the polarizer on both sides of the polarizer, it is not limited to this may be provided with a protective film for the polarizer on only one side. If necessary, one of the protective film for the polarizer may be replaced with a retardation film.
  • the polarizing plate protective film is provided on both sides of the polarizer as shown in Figure 2, any one or both of them may be an anti-glare film according to the above-described embodiments.
  • the polarizing plate protective film provided on the side of the surface opposite to the liquid crystal cell of the polarizer may be an anti-glare film according to the above-described embodiments.
  • the polarizing plate protective film may have a configuration including a transparent film and a coating layer as described above, or may have a configuration including a light absorber dispersed in the transparent film and the transparent film.
  • the coating layer is preferably provided on the opposite side of the surface facing the polarizer of the protective film for polarizing plate.
  • 3 illustrates the structure of a protective film for polarizing plates including a transparent film and a coating layer. 3 illustrates only one structure of the polarizer protective film, but the present invention is not limited thereto, and two polarizer protective films may be an anti-glare film according to the above-described embodiments.
  • a display device comprising a polarizing plate including a protective film for a polarizing plate, wherein the anti-glare film according to the above-described embodiments is a protective film for the polarizer, or between a liquid crystal cell and a polarizing plate, or a surface facing the liquid crystal cell of the polarizing plate. It provides a display device which is provided on the opposite side of the.
  • the display device may further include a backlight unit on the thin film transistor side.
  • a backlight unit on the thin film transistor side.
  • 1 illustrates a display device having a liquid crystal panel having a COT structure including a backlight unit.
  • the liquid crystal cell may have a material and structure known in the art, and for example, two substrates, a liquid crystal material filled between two substrates, a spacer provided between the two substrates, and a seal for sealing the liquid crystal material. And the like.
  • the anti-glare film is the protective film for the polarizer
  • the protective film for the polarizer is provided on the opposite side of the surface facing the liquid crystal cell of the polarizer. 3 illustrates such a structure.
  • the present invention is not limited thereto, and all of the polarizer protective films provided on both sides of the polarizer may be anti-glare films according to the above-described embodiment.
  • the anti-glare film comprises a coating layer provided on the opposite side of the transparent film and the surface opposite to the polarizer of the transparent film, the coating layer is 560 nm of transmission spectrum between 500 nm and 800 nm In the above, it has a minimum point of transmittance, or the transmittance
  • the anti-glare film as shown in Figure 4 may be provided on the side opposite to the surface of the polarizing plate facing the liquid crystal cell, as shown in Figure 5 may be provided between the liquid crystal cell and the polarizing plate.
  • two or more anti-glare films may be applied to the display device.
  • the anti-glare film may be provided between the liquid crystal cell and the polarizing plate, or on the opposite side of the surface of the polarizing plate facing the liquid crystal cell, or both.
  • the anti-glare film is used in the protective film for the polarizing plate, and may be provided between the liquid crystal cell and the polarizing plate, or on the opposite side of the surface of the polarizing plate facing the liquid crystal cell.
  • an optical film for adjusting the contrast ratio in the ON state of the display apparatus may be further provided between the backlight unit and the thin film transistor.
  • the addition of the above-mentioned light absorbing agent or black or blackening material is effective to improve black vision with the display turned off.
  • it may affect the brightness in the state where the display is WHITE. Therefore, by arranging the optical film for adjusting the contrast ratio in the ON state of the display device between the backlight unit and the thin film transistor, it is possible to prevent the above problem that may occur.
  • the optical film for adjusting the contrast ratio in the ON state of the display device may affect the contrast ratio by a film forming material, an additive, a surface treatment, or a coating layer formation.
  • the contrast ratio may be adjusted within a specific range in a state where the display device is turned on by the contrast ratio adjusting optical film.
  • an additional polarizing plate may be provided on an opposite surface of the thin film transistor opposite to the color filter.
  • This additional polarizing plate may comprise a polarizer and a protective film for polarizing plate provided on at least one side of the polarizer.
  • the anti-glare film for adjusting the contrast ratio in the ON state of the display device provided between the backlight unit and the thin film transistor may be a protective film for the polarizing plate.
  • the transparent conductive film is further provided on at least a portion of the surface of the electrode included in the thin film transistor facing the color filter.
  • the transparent conductive film may be an ITO film.
  • the internal reflection by the electrode of the thin film transistor can be effectively reduced by the transparent conductive film.
  • the transparent conductive film may be one layer or two or more layers.
  • the composition for forming a transparent film or coating layer of the anti-glare film may further include a binder resin or a polymerizable compound and a solvent for forming the binder resin.
  • the composition for forming a transparent film or coating layer of the anti-glare film may include a polyfunctional (meth) acrylate, a photoinitiator and a solvent.
  • polyfunctional (meth) acrylates not only polyfunctional (meth) acrylates but also those known in the art may be used as the binder resin or the polymerizable compound for forming the binder resin.
  • the composition for forming a transparent film or coating layer of the anti-glare film may be a hard coating layer, an anti-reflection layer, an anti-glare layer, or a composition for coating a low reflection layer.
  • the composition for forming a transparent film or coating layer of the anti-glare film may further include an additive for imparting a hard coating layer, an anti-reflection layer, an anti-glare layer, or a low reflection layer.
  • the hard coating layer may include a binder resin such as a polyfunctional (meth) acrylate, an antistatic agent, a photoinitiator, and a solvent as a coating layer for hardness, scratch resistance, and / or antistatic to protect the polarizer, and It may further include an additive according.
  • a binder resin such as a polyfunctional (meth) acrylate, an antistatic agent, a photoinitiator, and a solvent as a coating layer for hardness, scratch resistance, and / or antistatic to protect the polarizer, and It may further include an additive according.
  • the antireflective layer is for antireflection, and may include, for example, a binder resin such as polyfunctional (meth) acrylate, low refractive particles such as hollow silica or nanosilica, or a low refractive material such as a low refractive binder, a photoinitiator and a solvent. And, if necessary, may further include an additive.
  • the anti-glare layer is for preventing glare, and may include, for example, a binder resin such as polyfunctional (meth) acrylate, particles such as inorganic particles or organic particles, a photoinitiator and a solvent, and may further include an additive as necessary. have.
  • the anti-glare hard coating (SG: Semi Glare) composition was coated on a triacetyl cellulose (TAC) film with 10 meyer bars, and then dried in a 60 ° C. oven for 2 minutes and irradiated with ultraviolet rays of 80 mJ / cm 2 to prevent anti-glare coatings. A coating layer having characteristics was formed.
  • the anti-glare hard coating composition contained 30 wt% of a binder resin such as polyfunctional (meth) acrylate, 2.5 wt% of particles such as inorganic particles or organic particles, 2 wt% of photoinitiator, 0.5 wt% of additive, and 65 wt% of solvent.
  • the transmission spectrum of the anti-glare film prepared as described above is shown in FIG. 6.
  • the transmission spectrum was measured using a UV-VIS-NIR Spectrophotometer (Solidspec-3700, Shimadzu Co., Ltd.), a transmission / reflectance measuring device for each wavelength.
  • the prepared optical film is mounted as a protective film of the polarizing plate provided on the opposite side of the surface of the COT panel facing the color filter of the liquid crystal cell, and the result of measuring the reflection spectrum for black vision measurement is shown in FIG. It was.
  • Reflectance spectra were measured using a spectrophotometer (CM-2600d, Konica Minolta) which is a transmission / reflectance measuring instrument for each wavelength.
  • TAC triacetyl cellulose
  • the low reflection coating composition having a lower refractive index than the anti-glare low reflection coating layer was coated on the meyer bar 4 on the anti-glare hard coating layer of Comparative Example 1, and then dried in a 60 ° C. oven for 2 minutes and irradiated with 80 mJ / cm 2 ultraviolet rays.
  • a coating layer was formed having anti-glare low reflection coating properties.
  • the low reflection coating composition is based on the solid content of 45% binder resin, such as polyfunctional (meth) acrylate, 35% by weight hollow silica particles, 10% by weight nano silica, 5% by weight of a bolso-based additive, 3% by weight photoinitiator, 2% by weight of additives were added and the solvent was added to dilute to 3% by weight of solids in the total composition.
  • binder resin such as polyfunctional (meth) acrylate
  • 35% by weight hollow silica particles 10% by weight nano silica
  • a bolso-based additive 3% by weight photoinitiator
  • photoinitiator 2% by weight of additives were added and the solvent was added to dilute to 3% by weight of solids in the total composition.
  • the anti-glare coating (SGLR: Semi Glare-Low Reflection) composition was coated on a triacetyl cellulose (TAC) film with 10 meyer bars, and then dried in a 60 ° C. oven for 2 minutes and irradiated with ultraviolet rays of 80 mJ / cm 2 .
  • a coating layer was formed having anti-coat properties.
  • the anti-glare coating composition contained 30 wt% of a binder resin such as polyfunctional (meth) acrylate, 2.5 wt% of particles such as inorganic particles or organic particles, 2 wt% of photoinitiator, 0.5 wt% of additive, and 65 wt% of solvent.
  • the transmission spectrum of the optical film manufactured as described above is shown in FIG. 14.
  • the transmission spectrum was measured using a UV-VIS-NIR Spectrophotometer (Solidspec-3700, Shimadzu Co., Ltd.), a transmission / reflectance measuring device for each wavelength.
  • a blue pigment (GJ1226) was added to the anti-glare coating composition, except that 500 ppm, 1,000 ppm, and 3,000 ppm, respectively, were added based on the solids content of the dye to the solids content of the coating layer composition.
  • the transmission spectrum of the optical film manufactured as described above is shown in FIG. 15.
  • Example 5 Blue pigment, GJ1226, 1,000ppm
  • the optical film prepared in Comparative Example 3 was mounted with a protective film of a polarizing plate provided on the opposite side of the surface of the COT panel structure facing the color filter of the liquid crystal cell, respectively, The black luminous improvement effect was measured. The results are shown in FIG. 19.
  • the reflectance was reduced in the radio wave field, especially the decrease in reflectance between 500nm to 740nm Noticeably. This absorbs yellow light reflected by external light, resulting in improved black visibility.
  • Neptun blue 755 was added to the anti-glare coating composition, except that 1,000 ppm and 3,000 ppm, respectively, were added based on the solids content of the dye to the solids content of the coating layer composition. was measured.
  • the transmission spectrum of the optical film manufactured as described above is shown in FIG. 16.
  • a film was prepared in the same manner as in Comparative Example 3, except that Basic blue 7 was added to the anti-glare coating composition and 1,000 ppm and 3,000 ppm, respectively, were added based on the solid content of the dye to the solid content of the coating layer composition. Was measured.
  • the transmission spectrum of the optical film manufactured as described above is shown in FIG. 17.
  • the film was prepared in the same manner as in Comparative Example 3 except that Orasol blue 855 was added to the anti-glare coating composition, based on the solid content of the dye relative to the solid content of the coating layer composition, and the transmission spectrum was measured.
  • the transmission spectrum of the optical film manufactured as described above is shown in FIG. 18.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Polarising Elements (AREA)
  • Liquid Crystal (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Surface Treatment Of Optical Elements (AREA)

Abstract

La présente invention concerne un film antireflet qui améliore le contraste, les rayons visuels noirs externes et l'angle de visualisation d'une unité d'affichage en contrôlant un spectre de transmittance. La présente invention concerne : un film antireflet qui possède un point minimum de transmittance de 560 nm ou plus dans le spectre de transmittance compris entre 500 nm et 800 nm et qui possède une transmittance de 60 % à 96 % par rapport à la lumière étalon D65 ; et une plaque de polarisation et un dispositif d'affichage le comprenant.
PCT/KR2016/001086 2015-01-30 2016-02-01 Film antireflet, ainsi que plaque de polarisation et dispositif d'affichage le comprenant Ceased WO2016122282A1 (fr)

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CN111242012A (zh) * 2020-01-10 2020-06-05 京东方科技集团股份有限公司 具有指纹识别功能的显示装置

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KR102541393B1 (ko) * 2017-11-30 2023-06-09 삼성전자주식회사 디스플레이 장치
KR102412879B1 (ko) * 2018-03-29 2022-06-27 삼성디스플레이 주식회사 색 변환 패널 및 이를 포함하는 표시 장치
CN109062434A (zh) * 2018-07-26 2018-12-21 合肥金新允电子技术有限公司 一种桌面型触摸显示屏

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