WO2018093211A1 - Film à haute luminosité pour affichage à cristaux liquides, feuille composite et structure d'affichage à cristaux liquides l'utilisant - Google Patents

Film à haute luminosité pour affichage à cristaux liquides, feuille composite et structure d'affichage à cristaux liquides l'utilisant Download PDF

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Publication number
WO2018093211A1
WO2018093211A1 PCT/KR2017/013144 KR2017013144W WO2018093211A1 WO 2018093211 A1 WO2018093211 A1 WO 2018093211A1 KR 2017013144 W KR2017013144 W KR 2017013144W WO 2018093211 A1 WO2018093211 A1 WO 2018093211A1
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Prior art keywords
high brightness
film
liquid crystal
phosphor
crystal display
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Ceased
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PCT/KR2017/013144
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English (en)
Korean (ko)
Inventor
은종혁
김병남
류민영
안호진
강신비
김영식
이환섭
이성훈
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Hyosung Corp
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Hyosung Corp
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Priority claimed from KR1020160154508A external-priority patent/KR20180056512A/ko
Priority claimed from KR1020160154515A external-priority patent/KR20180056516A/ko
Priority claimed from KR1020160154532A external-priority patent/KR20180056525A/ko
Priority claimed from KR1020160154522A external-priority patent/KR20180056521A/ko
Priority claimed from KR1020170150070A external-priority patent/KR20180056549A/ko
Priority claimed from KR1020170150100A external-priority patent/KR20180056578A/ko
Priority claimed from KR1020170150091A external-priority patent/KR20180056569A/ko
Priority claimed from KR1020170150103A external-priority patent/KR102061942B1/ko
Priority claimed from KR1020170150093A external-priority patent/KR101961040B1/ko
Priority claimed from KR1020170150062A external-priority patent/KR20180056541A/ko
Priority claimed from KR1020170150068A external-priority patent/KR20180056547A/ko
Priority claimed from KR1020170150065A external-priority patent/KR101961029B1/ko
Priority claimed from KR1020170150097A external-priority patent/KR20180056575A/ko
Priority claimed from KR1020170150106A external-priority patent/KR20180056584A/ko
Priority claimed from KR1020170150080A external-priority patent/KR20180056559A/ko
Priority claimed from KR1020170150089A external-priority patent/KR102013498B1/ko
Priority claimed from KR1020170150076A external-priority patent/KR20180056555A/ko
Priority claimed from KR1020170150072A external-priority patent/KR20180056551A/ko
Priority claimed from KR1020170150087A external-priority patent/KR20180056565A/ko
Priority claimed from KR1020170150083A external-priority patent/KR101961036B1/ko
Priority claimed from KR1020170152674A external-priority patent/KR20190055881A/ko
Priority claimed from KR1020170152670A external-priority patent/KR20190055879A/ko
Priority claimed from KR1020170152672A external-priority patent/KR20190055880A/ko
Priority claimed from KR1020170152666A external-priority patent/KR20190055878A/ko
Application filed by Hyosung Corp filed Critical Hyosung Corp
Publication of WO2018093211A1 publication Critical patent/WO2018093211A1/fr
Anticipated expiration legal-status Critical
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent materials, e.g. electroluminescent or chemiluminescent
    • C09K11/08—Luminescent materials, e.g. electroluminescent or chemiluminescent containing inorganic luminescent materials
    • C09K11/77—Luminescent materials, e.g. electroluminescent or chemiluminescent containing inorganic luminescent materials containing rare earth metals
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/28—Interference filters
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors

Definitions

  • the present invention relates to a high-brightness film for a liquid crystal display (hereinafter referred to as an LCD), a composite sheet, and an LCD structure using the same. More specifically, at least one of a YAG-based phosphor and a LuAG-based phosphor may be formed on one surface of a base film.
  • the present invention relates to a high brightness film for a liquid crystal display device, a composite sheet, and an LCD structure using the same by coating a phosphor coating layer including one phosphor.
  • OLED Organic Light-Emitting Diode
  • the LCD is applying a brightness enhancement film to increase the contrast (contrast).
  • the brightness enhancing film may be attached to a BLU (Back Light Unit) using a light shielding tape.
  • a reflective polarizing film is used as the brightness enhancing film.
  • a reflective polarizing film is a film in which a high refractive index layer and a low refractive index layer are alternately laminated. Commercially, 3M's Dual Brightness Enhancement Film, DBEF ') is used.
  • a liquid crystal display device applied to a general LCD TV using a brightness enhancement film has a structure in which a white LED layer, a diffusion plate, a prism sheet, a DBEF film, and a liquid crystal panel are stacked in order from the bottom. That is, the light emitted from the white LED is condensed through the prism sheet and the brightness is improved through the DBEF film.
  • the present invention has been invented in view of the above circumstances, and provides a high-brightness film to which a phosphor which can be used instead of a DBEF film or used with a DBEF to improve brightness, and by applying the same, can improve brightness and color reproducibility.
  • An object of the present invention is to provide a liquid crystal display (LCD) structure.
  • a phosphor coating layer is coated on one surface of the base film, and the phosphor coating layer includes only YAG-based phosphors in the polymer matrix, only LuAG-based phosphors in the polymer matrix, or YAG-based phosphors and LuAG-based phosphor mixed phosphors in the polymer matrix. It is characterized by.
  • the YAG-based phosphor is Y 3 A1 5 0 12 : Ce 3 + (YAG: Ce), Tb 3 A1 5 0 12 : Ce 3 + (TAG: Ce), Ca 3 (Sc, Mg) 2 Si 3 O 12 : Ce 3+ , Y 3 Mg 2 AlSi 2 O 12 : Ce 3 +
  • LuAG-based phosphor is Lu 3 Al 5 O 12 : Ce 3 + , Tb 3 Al 5 O 12 : Ce 3 + , Lu 2 CaMg 2 Si 3 O 12 : Ce 3 + It is characterized in that at least one.
  • 10 to 40wt% compared to the entire coating layer when including only the YAG-based phosphor 10 to 40wt% compared to the overall coating layer when including only the LuAG-based phosphor, 10 to 40wt% compared to the entire coating layer when containing the YAG-based fluorescent material and LuAG-based phosphor mixed phosphor 10 to 40wt% 40 wt%, LuAG-based phosphor is characterized in that it comprises 1 to 20wt%.
  • the thickness of the phosphor coating layer is characterized in that 10 to 100 ⁇ m.
  • At least one surface of the base film and the phosphor coating layer is characterized by coating an absorbing pigment layer containing an absorbing pigment.
  • the absorbing pigment is characterized in that the inside of the phosphor coating layer is dispersed.
  • the absorption pigment is characterized by absorbing light in at least one of the wavelength band of 380 ⁇ 430nm, 480 ⁇ 510nm, 560 ⁇ 600nm.
  • the absorbing pigment layer is a soluble azo pigment (Carmine 6B), insoluble azo pigment (Toluidine Red), NaPhthol AS-based (Fast Red FGR), Monoazo Yellow-based (Monoazo Yellow G), Disazo Yellow-based (Disazo Yellow GG) pigments At least any one of the features.
  • the absorbing pigment is characterized in that it is contained 0.01 to 5wt% in the absorbing pigment layer.
  • the absorbing pigment is characterized in that it comprises 0.01 to 5wt% in the phosphor coating layer.
  • the thickness of the absorbing pigment layer is characterized in that 0.1 to 15 ⁇ m.
  • At least one surface of the base film and the phosphor coating layer is characterized by coating an absorbing dye layer containing the absorbing dye.
  • the absorbing dye is characterized in that the inside of the phosphor coating layer is dispersed.
  • the absorbing dye is characterized by absorbing light of at least one wavelength band of 380 ⁇ 430nm, 480 ⁇ 510nm, 560 ⁇ 600nm.
  • the absorbing dye is a hydroxy benzotriazole (hydroxy-benzotriazole), rhodamine (rhodamine, RH), squaraine (Squarine, SQ), cyanine (CY) and tetraaza porphyrin (Tetra aza porphyrin) , TAP) -based dyes.
  • the dye is characterized in that it comprises 0.01 to 5wt% in the absorbing dye layer.
  • the dye is characterized in that it comprises 0.01 to 5wt% in the phosphor coating layer.
  • the thickness of the absorbing dye layer is characterized in that 0.01 to 20 ⁇ m.
  • the phosphor coating layer is characterized in that it further comprises a back coating layer containing PMMA particles or PMMA particles and an antistatic agent on one surface of the base film is not coated.
  • PMMA particles are characterized in that it comprises 0.1 to 5wt% compared to the back coating layer.
  • the antistatic agent is characterized in that it comprises 0.01 to 3wt% compared to the back coating layer.
  • the thickness of the back coating layer is characterized in that 1 to 10 ⁇ m.
  • a low refractive index layer comprising a urethane acrylate oligomer having a fluorine-based polyol as a main chain and hollow nanosilica is formed on at least one outer surface of the base film and the phosphor coating layer.
  • the urethane acrylate oligomer is characterized in that it comprises 10 to 20wt% based on the low refractive layer.
  • the hollow nano silica is characterized in that it comprises 30 to 70wt% with respect to the low refractive layer.
  • the thickness of the low refractive layer is characterized in that 70 to 120nm.
  • the refractive index of the low refractive layer is characterized in that 1.32 to 1.42.
  • the high brightness film and the prism sheet are laminated with an adhesive.
  • the high brightness film and DBEF is characterized by laminating with an adhesive.
  • the high-bright film, prism sheet and DBEF are laminated in order with an adhesive.
  • the high brightness film, the prism sheet and the viewing angle complementary sheet is characterized in that the laminated with an adhesive.
  • the viewing angle complementary sheet is characterized in that the lens film, MOP or diffusion sheet.
  • the backlight unit includes a liquid crystal panel and a backlight unit installed on the bottom of the liquid crystal panel, wherein the backlight unit is laminated with a reflecting plate, a light guide plate, a prism sheet, an image diffusion plate, the blue LED is installed on both sides of the light guide plate, the high brightness film is a prism sheet And between the image diffusion plate or between the light guide plate and the prism sheet.
  • a liquid crystal panel and a backlight unit installed on the bottom of the liquid crystal panel, the backlight unit is a diffusion plate, a prism sheet, an image diffusion plate is sequentially stacked, a blue LED is installed directly below the diffusion plate, the high brightness film It is characterized in that the laminated between the prism sheet and the phase diffusion plate or between the diffusion plate and the prism sheet.
  • the prism sheet is characterized in that it further comprises a DBEF.
  • the prism sheet is characterized in that it further comprises a viewing angle supplement sheet.
  • the viewing angle complementary sheet is characterized in that the lens film, MOP or diffusion sheet.
  • the high brightness film having the phosphor coating layer formed on one surface of the substrate film of the present invention may implement excellent brightness and color reproduction compared to the existing brightness enhancement film.
  • Figure 1 is a cross-sectional view of a high brightness film
  • Figure 1 (a) is a phosphor coating layer containing a YAG-based phosphor
  • Figure 1 (b) is a phosphor coating layer containing a LuAG-based phosphor
  • Figure 1 (c) is a YAG-based It is sectional drawing in the case of including the fluorescent substance coating layer containing a fluorescent substance and LuAG fluorescent substance, respectively.
  • FIG. 2 is a cross-sectional view of a high brightness film coated with an absorbing pigment layer according to the present invention.
  • FIG 3 is a cross-sectional view of a high brightness film comprising an absorbing pigment in the phosphor coating layer according to the present invention.
  • FIG. 4 is a cross-sectional view of a high brightness film coated with an absorbing dye layer according to the present invention.
  • FIG. 5 is a cross-sectional view of a high brightness film comprising an absorbing dye in the phosphor coating layer according to the present invention.
  • FIG. 6 is a cross-sectional view of a high brightness film having a back coating layer according to the present invention.
  • FIG. 7 is a cross-sectional view of a high brightness film having a low refractive index layer according to the present invention.
  • FIG. 8 is a cross-sectional view of a composite sheet in which a high brightness film, a prism sheet and a DBEF are laminated in order according to the present invention.
  • FIG. 9 is a cross-sectional view of a composite sheet laminated with a high brightness film and a viewing angle complementary sheet according to the present invention.
  • FIG. 11A to 11D are views showing different schematic implementations of the LCD structure according to the present invention.
  • FIG. 12 is a schematic diagram of an LCD structure including the high brightness film and DBEF of the present invention.
  • FIG. 13 is a schematic diagram of an LCD structure including a high brightness film and a viewing angle complementary sheet of the present invention.
  • FIG. 14 illustrates a viewing angle measurement result of an LCD when a light guide plate, a high brightness film, a prism sheet, a lens film, and a liquid crystal panel are sequentially disposed in front of a blue LED according to the present invention.
  • FIG. 15 illustrates a viewing angle measurement result of an LCD when a light guide plate, a high brightness film, a MOP, and a liquid crystal panel are sequentially disposed in front of a blue LED according to the present invention.
  • FIG. 16 illustrates a viewing angle measurement result of an LCD when a light guide plate, a high brightness film, a prism sheet, a diffusion sheet, and a liquid crystal panel are sequentially disposed in front of a blue LED according to the present invention.
  • the phosphor coating layer 140 is characterized in that it comprises a phosphor and a polymer matrix. More specifically, as shown in (a) of FIG. 1, only the YAG-based phosphor 120 is included in the polymer matrix, (b) only the LuAG-based phosphor 130 is included in the polymer matrix, or (Y) is YAG-based in the polymer matrix. A mixed phosphor including both the phosphor 120 and the LuAG-based phosphor 130 may be included.
  • the base film 110 of the present invention may be used, such as PET, TAC, PC, Polyimide, Acryl film.
  • the phosphor coating layer 140 may be formed on one surface of the base film 110, and the phosphor coating layer 140 includes a phosphor and a polymer matrix that emit yellow fluorescence in order to exhibit a brightness and color reproducibility improvement effect.
  • the phosphor may include at least one of a YAG (Yittrium aluminum garnet) -based phosphor 120 and a LuAG (Lutetium aluminum garnet) -based phosphor 130.
  • the YAG-based phosphor 120 is Y 3 A1 5 0 12 : Ce 3 + (YAG: Ce), Tb 3 A1 5 0 12 : Ce 3 + (TAG: Ce), Ca 3 (Sc, Mg) 2 Si 3 O 12: Ce 3+, Y 3 Mg 2 AlSi 2 O 12: it is preferable that at least one of a Ce + 3.
  • the YAG-based phosphor 120 is included in the phosphor coating layer 140 as shown in FIG. 1A, it is preferable to include 10 to 40 wt% of the phosphor coating layer 140 as a whole.
  • the LuAG-based phosphor 130 is included in the phosphor coating layer 140 as shown in FIG. 1B, it is preferable to include 10 to 40 wt% of the phosphor coating layer 140 as a whole.
  • the YAG phosphor is 10 to 40 wt% compared to the entire phosphor coating layer 140.
  • LuAG-based phosphor is preferably included 1 to 20wt%.
  • the lower limit of the content of the YAG-based phosphor is less than 10wt%, the effect of improving the brightness is insignificant, and if the upper limit is more than 40wt%, the color reproducibility which is important in the LCD TV is lowered.
  • the LuAG content of the LuAG phosphor is less than 1 wt%, the brightness enhancement effect is insignificant. If the upper limit is exceeded 20 wt%, the LuAG content is preferably in the range of 1 wt% to 20 wt% because the important color reproducibility is lowered in the LCD TV. .
  • Tables 1 to 4 show luminance and color reproducibility according to the content of YAG-based phosphors and LuAG-based phosphors.
  • Luminance Improvement Effect by LuAG-Based Phosphor Content division Ref. DBEF LED TV
  • DBEF QD TV
  • Luminance and Color Reproduction Rate According to Contents of YAG and LuAG Phosphors division Ref. DBEF (LED TV) Ref. DBEF ( QD TV) YAG : LuAG Content wt% YAG 10 YAG 10 LuAG 5 YAG 10 LuAG 10 YAG 10 LuAG 20 Luminance [nit] 430 450 Luminance [nit] 430 450 500 550 X 0.2730 0.2593 X 0.2350 0.2406 0.2531 0.2749 Y 0.2925 0.2911 Y 0.2577 0.2701 0.2860 0.2970 Color reproducibility [ % ] 81.6 100 Color reproducibility [ % ] 81.3 81.8 82.4 82.6 division Ref.
  • DBEF (LED TV) Ref.
  • DBEF ( QD TV) YAG : LuAG content wt% YAG 20 YAG 20 LuAG 5 YAG 20 LuAG 10 YAG 20 LuAG 20 Luminance [nit] 430 450 Luminance [nit] 480 520 560 600 X 0.2730 0.2593 X 0.2550 0.2606 0.2731 0.2801 Y 0.2925 0.2911 Y 0.2877 0.2801 0.2910 0.2970 Color reproducibility [ % ] 81.6 100 Color reproducibility [ % ] 82.6 82.3 82.4 82.6 division Ref. DBEF (LED TV) Ref.
  • DBEF QD TV
  • YAG LuAG content wt% YAG 40 YAG 40 LuAG 5 YAG 40 LuAG 10 YAG 40 LuAG 20
  • Luminance and Color Reproducibility According to Phosphor Mixing Ratio YAG: LuAG YAG 5 YAG: LuAG YAG 50 content wt% LuAG 5 LuAG 10 LuAG 20 content wt% LuAG 5 LuAG 10 LuAG 20 Luminance [ nit ] 380 390 430 Luminance [ nit ] 610 630 640 Color reproducibility [ % ] 79.3 79.3 78.3 Color reproducibility [ % ] 72.3 71.3 71.3
  • the phosphor coating layer 140 of the present invention is manufactured by the following method.
  • the coating solution including the phosphor is prepared by combining at least one phosphor selected from the YAG phosphor 120 and the LuAG phosphor 130 and a polymer matrix for securing physical properties. Specifically, the polymer matrix and the phosphor are put in a stirrer and uniformly dispersed to prepare a coating solution including the phosphor.
  • the polymer matrix may include a monofunctional urethane acrylate oligomer, a monofunctional monomer, and the like, and a photoinitiator, a leveling agent, an antifoaming agent, and the like may be added.
  • a photoinitiator examples include IG184, IG907, TPO, CP4, and the like. Of these, the preferred photoinitiators are IG184, TPO.
  • the physical properties refer to properties such as pencil hardness, adhesion, curl, flex resistance, and the like.
  • Adhesion In order to measure the adhesion between the base film and the coating layer, the coating layer is scratched at regular intervals of 10 * 10 (lattice spacing 1mm) and the tape is attached and peeled off to evaluate the adhesion between the coating layer and the base layer (standard: JIS K 5400- 8.5)
  • Flexural resistance Flexibility evaluation of coating film and coating film by rolling the film round on a round bar.
  • the coating solution is coated on one side of the base film 110 with a Mayer Bar, and then cured by irradiating UV with an electrodeless lamp. Can be.
  • the coating layer 140 When performing the coating of the coating layer 140 may be coated on the cross section of the base film (110).
  • the thickness of the phosphor coating layer 140 becomes thicker, the curling property deteriorates, so that the resin applicable to the polymer matrix is limited. Therefore, the thickness of the coating layer 140 should not be too thick.
  • the luminance and color reproducibility characteristics of the high brightness film of the present invention can be adjusted to each thickness and phosphor content of the phosphor coating layer.
  • the thickness of the phosphor coating layer 140 is preferably 10 to 100 ⁇ m. This is because when the coating thickness of the coating layer is less than 10 ⁇ m, the phosphor protrudes to cause a poor appearance, and when the coating thickness is more than 100 ⁇ m, the curl property deteriorates during coating, thereby limiting the resin applicable to the polymer matrix. Curling properties according to the coating thickness of the phosphor coating layer 140 of the present invention are shown in Table 5 below.
  • Curl according to coating thickness section Coating thickness [ ⁇ m] 5 10 30 50 70 100 120 150 Curl [mm] 0 3 4 7 10 18 22 25
  • the high brightness film 100 is an absorbing pigment produced by uniformly dispersing one or more absorbing pigments (Pigment) absorbing a specific wavelength band in a stirrer with a polymer matrix in order to obtain a more vivid color reproduction rate
  • the layer 150 may further include.
  • the manufactured absorbing pigment layer 150 may be formed on at least one surface of a base film and a phosphor coating layer using a Mayer Bar. As shown in FIG. 2, at least one of one surface of the base film 110 and one surface of the phosphor coating layer 140 is coated and coated with a predetermined thickness, and then cured using an electrodeless lamp. Specifically, the absorbing pigment layer 150 may be formed on at least one layer indicated by the absorbing pigment layer 150 in each of FIGS. 2A to 2C.
  • the polymer matrix used in the absorbing pigment layer 150 of the present invention may include a monofunctional urethane acrylate oligomer, a monofunctional monomer, and the like, and a photoinitiator, a leveling agent, an antifoaming agent, and the like may be added.
  • a photoinitiator examples include IG184, IG907, TPO, CP4, and the like. Of these, the preferred photoinitiators are IG184, TPO.
  • the absorbing pigments included in the absorbing pigment layer 150 of the present invention are soluble azo pigments (Carmine 6B), insoluble azo pigments (Toluidine Red), NaPhthol AS based (Fast Red FGR), Monoazo Yellow based (Monoazo Yellow G) and Disazo Yellow (Disazo Yellow GG) Pigment It may be at least one of the.
  • the absorbing pigment of the present invention is preferably a pigment that absorbs light in at least one of the wavelength range of 380 ⁇ 430 nm, 480 ⁇ 510nm and 560 ⁇ 600nm.
  • the thickness of the preferable absorbing pigment layer 150 is 0.1-15 micrometers.
  • the thickness of the absorbing pigment layer is less than 0.1 ⁇ m, the effect of synergistic color reproduction is insufficient, and when the thickness of the absorbing pigment layer is more than 15 ⁇ m, luminance decreases.
  • the absorbing pigment layer 150 preferably contains 0.01 to 5 wt% of an absorbing pigment. If it is less than 0.01 wt%, there is no effect of improving color reproducibility, and if it is more than 5 wt%, the luminance is lowered.
  • the luminance and color reproducibility according to the absorbing pigment content and the coating thickness of the absorbing pigment layer for each kind of absorbing pigment are shown in Tables 6 to 10 below.
  • the luminance data of Tables 6 to 10 are data converted into "%" as compared to QD Ref. (450nit).
  • the mixing ratio of the YAG-based phosphor: LuAG-based phosphor was 20wt%: 2wt%, and the thickness of the phosphor coating layer 140 was formed into 50 ⁇ m.
  • the thickness was fixed to 0.1 ⁇ m and measured using a high brightness film 100 prepared by fixing the absorbing pigment layer so that each absorbing pigment contained 0.1 wt%.
  • the high brightness film 100 may disperse one absorbing pigment absorbing a specific wavelength band in the phosphor coating layer 140 in order to obtain a clearer color reproduction.
  • the high brightness film 100 of the present invention may have a phosphor coating layer 140 formed on one surface of the base film 110, and the absorbing pigment 160 may be dispersed in the phosphor coating layer 140. have.
  • the YAG-based phosphor 120 is dispersed in the phosphor coating layer 140 together with the absorbing pigment 160 as shown in FIG. 3 (a), or as shown in FIG. 3 (b).
  • the LuAG-based phosphor 130 may be dispersed, or a mixed phosphor of the YAG-based phosphor and the LuAG-based phosphor may be dispersed as shown in FIG.
  • the absorbing pigment 160 dispersed in the phosphor coating layer 140 of the present invention is a soluble azo pigment (Carmine 6B), an insoluble azo pigment (Toluidine Red), NaPhthol AS (Fast Red FGR), Monoazo Yellow (Monoazo Yellow G) And Disazo Yellow-based (Disazo Yellow GG) Pigments It may include at least one of the.
  • the absorbing pigment 160 of the present invention is preferably a pigment that absorbs light in at least one of the wavelength band of 380 ⁇ 430 nm, 480 ⁇ 510nm and 560 ⁇ 600nm.
  • the phosphor coating layer 140 preferably includes 0.01 to 5 wt% of the absorbing pigment 160. If it is less than 0.01 wt%, there is no effect of increasing color reproduction, and if it exceeds 5wt%, a problem of deterioration of luminance occurs.
  • High brightness film 100 is absorbed by evenly dispersing one or more absorbent dye (dyestuff) absorbing a specific wavelength band in a stirrer with a polymer matrix to obtain a more vivid color reproduction rate
  • the dye layer 170 may be further included.
  • the prepared absorbing dye layer 170 may be formed on at least one surface of a base film and a phosphor coating layer using a Mayer Bar. As shown in FIG. 4, the absorbing dye is coated on at least one of the one surface of the base film 110 and the one surface of the phosphor coating layer 140 by coating with a predetermined thickness and then cured using an electrodeless lamp to form the absorbing dye layer 170. Form. Specifically, the absorbing dye layer 170 may be formed on at least one layer indicated by the absorbing dye layer 170 in each of FIGS. 4A to 4C.
  • the polymer matrix used in the absorbing dye layer 170 of the present invention includes a monofunctional urethane acrylate oligomer, a monofunctional monomer, and the like, and a photoinitiator, a leveling agent, an antifoaming agent, and the like may be added.
  • the photoinitiators include IG184, IG907, TPO, CP4, and preferred photoinitiators are IG184, TPO.
  • Absorbing dyes included in the absorbing dye layer 170 of the present invention is hydroxy benzotriazole (hydroxy-benzotriazole), rhodamine (rhodamine, RH), squaraine (Squarine, SQ), cyanine (cyanine, CY) At least one of the) -based and tetraaza porphyrin (TAP) -based dyes.
  • the hydroxy benzotriazole-based dye is preferably 4-Hydroxy-1H-benzotriazole, 2- (2-Hydroxy-5-methylphenyl) benzotriazole, or the like.
  • the rhodamine (rhodamine, RH) -based dye is preferably Rhodamine, Rhodamine 6G and the like.
  • the squaraine (Squarine, SQ) -based dye is preferably 2,4-Bis [4- (N, N-dibenzylamino) -2,6-dihydroxyphenyl] squaraine.
  • the cyanine (Cyanine, CY) -based dye is preferably Phthalocyanine and the like.
  • the thin absorbing dye is preferably a dye which absorbs light in at least one of wavelength ranges of 380 to 430 nm, 480 to 510 nm, and 560 to 600 nm.
  • the thickness of the preferable absorbing dye layer 170 is 0.01-20 ⁇ .
  • the thickness of the absorbing dye layer is less than 0.01 ⁇ m, the effect of synergistic color reproduction is insufficient, and when the thickness of the absorbing dye layer is greater than 20 ⁇ m, luminance decreases.
  • the absorbing dye layer 170 preferably contains 0.01 to 5wt% dye. If it is less than 0.01 wt%, there is no effect of improving color reproducibility, and if it is more than 5 wt%, the luminance is lowered.
  • the luminance and color reproducibility according to the absorbing dye content and the coating thickness of the absorbing dye layer according to the absorbing dye type are shown in Tables 11 to 16 below.
  • the luminance data of Tables 11 to 16 are data converted into "%" as compared with QD Ref. (450nit).
  • the mixing ratio of the YAG-based phosphor: LuAG-based phosphor was 20wt%: 2wt%, and the thickness of the phosphor coating layer 140 was formed into 50 ⁇ m, and the absorption dye layer 170 The thickness was fixed to 0.1 ⁇ m and measured using a high brightness film 100 prepared by fixing each absorbing dye to 0.1 wt% in the absorbing dye layer.
  • the absorbing dye layer 170 is not formed continuously on one surface of the base film 110 or the phosphor coating layer 140, the prism sheet 210 is laminated on the upper layer of the phosphor coating layer, and formed on the prism sheet. Discontinuously disposed in between may improve the brightness of the LCD.
  • the absorbing dye layer 170 is formed at the upper end of the prism sheet 210, the color reproducibility is less than that of the case where the absorbing dye layer is formed at the lower end of the prism sheet. It is more effective than the luminance.
  • the high brightness film 100 may be formed by dispersing one type of absorbing dye absorbing a specific wavelength band in the phosphor coating layer 140 in order to obtain a more vivid color reproduction rate.
  • the high brightness film 100 of the present invention may have a phosphor coating layer 140 formed on one surface of the base film 110, and an absorbing dye 180 may be dispersed in the phosphor coating layer 140. have.
  • the YAG-based phosphor is dispersed in the phosphor coating layer 140 together with the absorbing dye 180 as shown in FIG. 5 (a), or as shown in FIG. 5 (b).
  • the phosphor is dispersed, or a mixed phosphor of the YAG-based phosphor and the LuAG-based phosphor is dispersed as shown in FIG.
  • Absorbing dye 180 dispersed in the phosphor coating layer 140 of the present invention is a hydroxy benzotriazole (hydroxy-benzotriazole), rhodamine (rhodamine, RH), squaraine (squarine, SQ), cyanine (cyanine) , CY) and tetraaza porphyrin (TAP) -based dyes may include at least one.
  • the absorbing dye 180 of the present invention is preferably a dye for absorbing light in at least one of the wavelength band of 380 ⁇ 430 nm, 480 ⁇ 510nm and 560 ⁇ 600nm.
  • the phosphor coating layer 140 preferably includes 0.01 to 5 wt% of the absorbing dye 180. If it is less than 0.01 wt%, there is no effect of increasing color reproduction, and if it exceeds 5wt%, a problem of deterioration of luminance occurs.
  • High brightness film 100 is a back coating containing PMMA particles or PMMA particles and an antistatic agent on one surface of the base film 110 is not coated with a phosphor coating layer as shown in FIG.
  • the layer 200 may further include.
  • the particles included in the back coating layer 200 impart irregularities to the rear surface of the optical film to prevent blocking with other optical sheets, thereby improving workability, and preventing static electricity generated by friction in the process.
  • the coating crude liquid used for the back coating layer is composed of urethane acrylate oligomer, monofunctional monomer, photoinitiator, leveling agent, dispersant and PMMA particles.
  • the PMMA particles are preferably contained 0.1 to 5 wt% with respect to the entire back coating layer. If less than 0.1wt% does not form sufficient irregularities on the back of the optical film, if it is more than 5wt% caused a loss of transmitted light due to high haze, the haze of the back coating layer is adjusted to 1 to 20% by adjusting the content of PMMA particles It is desirable to.
  • an antistatic agent may be added as an additive to the back coating layer 200 as necessary.
  • the surface resistance can be adjusted by adding the antistatic agent, and the antistatic agent is preferably included in an amount of 0.01 to 3wt% relative to the entire back coating layer.
  • the content of the antistatic agent is less than 0.01 wt%, the surface resistance for the antistatic is insufficient, and when the content of the antistatic agent is more than 3wt%, it will result in the addition of more excess than necessary. It is desirable to adjust the range so as to be in the range of 10 10 to 10 12 Ohm / square.
  • the surface resistance is 10 10 ⁇ 10 12 Ohm / ⁇ , it is possible to prevent the obstacle in the dynamic state of the film, and the charging phenomenon after the charging is immediately attenuated.
  • the back coating layer 200 of the present invention may use a back coating method such as bar coating and slot-die coating.
  • the thickness of the back coating layer 200 is preferably 1 to 10 ⁇ m. If the thickness is less than 1 ⁇ m, sufficient unevenness is not formed on the back surface of the optical film, and thus blocking is difficult to prevent. If the thickness is more than 10 ⁇ m, the problem of transmission light loss due to high haze occurs.
  • High brightness film 100 is a urethane acrylate oligomer and hollow nano silica having a main chain fluorine-based polyol on the outer surface of at least one of the base film 110 and the phosphor coating layer 140 as shown in FIG. It may include a low refractive index layer 190 including.
  • the low refractive index layer 190 is for further improving the luminance, as shown in FIG. 7 (a), or above the phosphor coating layer 140, or as shown in FIG. 7 (b), as above, and the base film 110. It can be formed at both the bottom of the.
  • the coating crude liquid for forming the low refractive layer 190 may include a urethane acrylate oligomer, a polyfunctional monomer, a monofunctional monomer, a photoinitiator, a leveling agent, a dispersant, and hollow nanosilica.
  • the urethane acrylate oligomer has the structure shown in the following [Formula 1].
  • x, y, z and n are integers between 0 and 50.
  • the urethane acrylate oligomer has a fluorine-based polyol as a main chain and is included in an amount of 10 to 20 wt% based on the low refractive layer 190. If the content of fluorine-based polyol is less than 10wt%, the refractive index of the low refractive index layer is increased, and light loss occurs. If the content of the fluorine-based polyol is more than 20wt%, the monomer content is reduced and the crosslinking density decreases, so it is difficult to secure physical properties such as surface hardness. .
  • the polyfunctional monomer and the monofunctional monomer may be made of PETA (Pentaerythritol triacrylate) and ACMO (Acryloyl morpholine), and included in a ratio of 20 to 30wt% with respect to the low refractive layer.
  • the photoinitiator, leveling agent, dispersant may be included 1 to 5wt% based on the low refractive layer.
  • the hollow nano silica can be used, for example, hollow nano silica of Japan's one-way catalyst, it is preferably included 30 to 70wt% with respect to the low refractive layer 190. This is because if the content of the hollow nanosilica is less than 30wt%, the reflectance is increased by 2.5% or more, thereby causing the loss of transmitted light. If the content of the hollow nanosilica is greater than 70%, the dispersion of the hollow nanosilica particles occurs, resulting in uneven appearance.
  • the coating of the low refractive index layer 190 may be a method such as bar coating, slot-die coating, Micro Gravure coating, the thickness of the low refractive layer 190 is preferably 70 to 120 nm. If the thickness of the low refractive index layer 190 is less than 70 nm or more than 120 nm, the reflectance may be increased, thereby causing a decrease in luminance due to transmitted light loss.
  • the refractive index of the low refractive layer 190 is 1.32-1.42, and it is more preferable that it is 1.34-1.38 for brightness improvement.
  • low refractive coating solution TU2359 was applied to the top of the manufactured phosphor coated PET film using a slot die coater, and then irradiated with ultraviolet light for about 5 seconds using an electrodeless lamp. It was. In this case, the light quantity of irradiated ultraviolet rays was 1000 mJ or less.
  • the prepared coating solution was coated on a surface of a PET film with a bar coater at a thickness of 50 ⁇ m, and then irradiated with ultraviolet light for about 5 seconds using an electrodeless lamp.
  • the amount of irradiated ultraviolet light was 1000 mj or less.
  • a single-sided and double-sided coating of 100 nm thickness of Japan JSR Co., Ltd. low refractive coating solution TU2359 was applied to the top of the manufactured phosphor coated PET film using a slot die coater, and then irradiated with ultraviolet light for about 5 seconds using an electrodeless lamp. It was. In this case, the light quantity of irradiated ultraviolet rays was 1000 mJ or less.
  • low refractive coating solution TU2359 was applied to the top of the manufactured phosphor coated PET film using a slot die coater, and then irradiated with ultraviolet light for about 5 seconds using an electrodeless lamp. It was. In this case, the light quantity of irradiated ultraviolet rays was 1000 mJ or less.
  • a high brightness film was prepared in the same manner as in Example 1 except that the low refractive layer was not coated.
  • a high brightness film was prepared in the same manner as in Example 3 except that the low refractive layer was not coated.
  • the LCD After manufacturing the LCD by cutting the high brightness film prepared according to the Examples and Comparative Examples in A4 size, the front brightness and color reproduction rate of the high brightness film were measured by a luminance measuring device (BM-7 FAST color difference luminance meter from Topcon, Japan). The results are shown in Table 18 below.
  • the LCD was configured by sequentially arranging a reflecting plate, a light source (Blue LED), a high brightness film (HBF), a prism and a liquid crystal display panel.
  • the high brightness film 100 and several other films may be adhered in the form of one sheet to form a composite sheet 300 for a liquid crystal display device.
  • the high-brightness film 100 and the optical film are laminated with an adhesive to produce a composite sheet, which can be applied to the LCD.
  • the optical film may be used by selecting at least one of a prism sheet, a DBEF, and a viewing angle complementary sheet.
  • the prism sheet 210 is preferably used by laminating each of a POP (Prism On Prism, two composite film) or vertical and horizontal prism sheets.
  • POP Prism On Prism, two composite film
  • the viewing angle complementary sheet in the present invention is a lens (lens) film 240, MOP (Micro lens On Prism, a multi-layer laminated film film that can function on the prism layer) (250), diffusion sheet 260 It is preferable that it is either.
  • the adhesive is preferably an optical clear adhesive (OCA), and may be bonded by direct bonding (full lamination) or air gap bonding.
  • OCA optical clear adhesive
  • the direct bonding method has a lower yield than the air gap bonding method, but has excellent optical properties and high visibility and low power consumption.
  • the lamination is performed by the process as shown in FIG.
  • the optical film F1 is supplied through the first feed roller R1, and the high brightness film F2 is supplied through the second feed roller R2.
  • the optical film (F1) passes through the adhesive coating roller (R3), the adhesive (A) is applied to at least one side of the optical film and then laminated with the high-brightness film (F2) via a paper roller (R4) composite sheet (F3) ) Is completed.
  • the composite sheet 300 of the present invention may be formed by applying an adhesive between the high brightness film and the optical film.
  • the composite sheet 300 may be formed by applying an adhesive between the high brightness film 100 and the DBEF 220.
  • the composite sheet 300 may be formed by applying an adhesive between the high brightness film 100 and the prism sheet 210.
  • an adhesive is applied between the high brightness film 100 and the prism sheet 210 and between the prism sheet 210 and the DBEF 220, respectively, as shown in FIG. 8.
  • the sheet 300 may be formed.
  • the lamination process of adhering the DBEF 220 is repeated to repeat the high brightness film 100 and the prism sheet 210 as shown in FIG. 8.
  • DBEF 220 to form a composite sheet (300).
  • Table 19 shows the luminance and color reproducibility according to the preferred phosphor mixing ratio when using DBEF and HBF together
  • Tables 20 and 21 show the mixing ratios other than the preferred phosphor mixing ratio when using DBEF and HBF together.
  • Luminance and color reproducibility ' shows the luminance and color reproducibility according to the preferred phosphor mixing ratio when using DBEF and HBF together
  • Composite sheet 300 according to another embodiment of the present invention can be implemented to improve the brightness according to the viewing angle of the LCD by using a viewing angle complementary sheet of the optical film. In particular, it is possible to improve the problem that the luminance is lowered at a certain angle. The light condensed through the prism sheet 210 is diffused again in the viewing angle complementary sheet, so that it is possible to implement higher luminance and better brightness for each viewing angle than conventional LCD TVs.
  • a composite sheet may be formed by applying an adhesive between the high brightness film 100 and the viewing angle complementary sheet.
  • the adhesive is applied between the high brightness film 100 and the prism sheet 210 and between the prism sheet and the viewing angle supplementing sheet, respectively. Sheets can be formed.
  • FIG. 9 is a view showing a specific example of a composite sheet including a high brightness film 100 and a viewing angle complementary sheet of the present invention.
  • FIG. 9A illustrates a composite sheet using the lens film 240 as a viewing angle complementary sheet.
  • the high brightness film 100, the prism sheet 210, and the lens film 240 are laminated in order and adhered.
  • FIG. 9B illustrates a composite sheet using the MOP 250 as a viewing angle complementary sheet. Since the MOP is formed by stacking a lens film capable of diffusing on one layer of the prism, the high brightness film 100 and the MOP 250 are laminated and adhered in order without using a separate prism sheet together. desirable.
  • FIG. 9C shows a composite sheet using the diffusion sheet 260 as a viewing angle complementary sheet.
  • the high brightness film 100, the prism sheet 210 and the diffusion sheet 260 are laminated in order and adhered.
  • the LCD structure according to the present invention may include a liquid crystal panel and a backlight unit on the bottom thereof, and the backlight unit may include a reflector, a light guide plate, a high brightness film 100, and a prism sheet 210.
  • FIG. 11 A schematic diagram of the LCD structure of the present invention is shown in Figs. 11A to 11D.
  • the prism sheet 210 is divided into horizontal prism sheets 22 and 32 and vertical prism sheets 23 and 33.
  • the liquid crystal display device includes a liquid crystal panel 10 and a backlight unit 20, 30.
  • the backlight unit 20 may include a reflector 25, a light guide plate 24, a vertical prism sheet 23, and a horizontal prism sheet as illustrated in FIGS. 11A and 11B. 22) and the image diffusion plate 21 is sequentially stacked, the high brightness film 100 between the horizontal prism sheet 22 and the image diffusion plate 21 or between the light guide plate 24 and the vertical prism sheet 23 This can be stacked.
  • light sources may be installed at both side surfaces of the light guide plate 24 to form an LED edge-type backlight.
  • the backlight unit 30 according to another embodiment of the present invention, as shown in Figure 11 (c) (d), the diffusion plate 34, the vertical prism sheet 33, the horizontal prism sheet 32 and The image diffuser plate 31 is sequentially stacked, and the high brightness film 100 is laminated between the horizontal prism sheet 32 and the image diffuser plate 31 or between the diffusion plate 34 and the vertical prism sheet 33.
  • a light source may be installed under the diffusion plate 34 to form an LED direct backlight.
  • the luminance can be improved.
  • the LCD structure according to the present invention may further include a DBEF 220 on the prism sheet 210.
  • 12 shows an example of an LCD structure including the high brightness film 100 and the DBEF 220 of the present invention.
  • the light source 410, the light guide plate 420, the high brightness film 100, the prism sheet 210, the DBEF 220, and the liquid crystal panel 430 are sequentially stacked from the bottom surface.
  • Such a structure is preferable in terms of improving luminance and improving color reproducibility.
  • the LCD structure may include the composite sheet 300 to which the high brightness film 100, the prism sheet 210, and the DBEF 220 are attached.
  • Tables 22 to 25 show that when the high brightness film 100 of the present invention is used with the prism sheet 210, the high brightness film 100 is combined with the prism sheet 210 and the DBEF 220 to be applied to the LCD structure, respectively. In the case of, the results of experiments with luminance and color reproducibility are shown.
  • Table 22 below shows the 'luminosity check results for each application position of the HBF'.
  • the high brightness film (HBF) 100 of the present invention when the high brightness film (HBF) 100 of the present invention is applied to the LCD structure, it can be seen that the brightness enhancement effect is maximized when the prism sheet 210 is placed on the high brightness film 100. have. Therefore, it is preferable that the prism sheet 210 is located on the upper layer of the high brightness film 100. In addition, it can be seen that the brightness enhancement effect is best when the high brightness film 100 is applied directly on the light guide plate. Therefore, the high brightness film 100 of the present invention is most preferably used between the light guide plate 420 and the prism sheet 210.
  • Table 23 shows 'luminance tendency with and without DBEF and prism sheet'.
  • the high brightness film 100 has low luminance when used without both the DBEF 220 and the prism sheet 210, but when used with the prism sheet 210 instead of the DBEF film, the high brightness film 100 is used in the case of using a DBEF film for a typical WHITE LED.
  • the front brightness of 784.7 nit was shown to display a UHD level of 8K or higher.
  • Table 24 below shows 'optimization of the HBF brightness enhancement film application structure'.
  • the high brightness film 100 and the prism sheet 210 of the present invention are included in comparison with the conventional WHITE LED TV or QD TV, the luminance is improved, and the most desirable aspect in terms of improving the luminance and satisfying the front color seat tolerance range. The results were shown. Furthermore, when the DBEF 220 is further included on the prism sheet 210, the front luminance value is the highest.
  • Table 25 is a table 'luminance and color reproducibility, front color coordinates, RGB color coordinates comparison'.
  • the LCD having the high brightness film 100 of the present invention with the prism sheet 210 has the highest brightness, color reproducibility than when the DBEF film is applied to the conventional WHITE LED direct type You can also see that high.
  • the LCD structure of the present invention may include a liquid crystal panel and a backlight unit on the bottom thereof, and the backlight unit may include a reflector, a light guide plate, a high brightness film 100, and a prism sheet 210 in this order.
  • the prism sheet 210 may further include a viewing angle complementary sheet.
  • FIG. 13 shows an example of an LCD structure including a high brightness film 100 and a viewing angle complementary sheet according to the present invention.
  • FIG. 13A illustrates a case where the lens film 240 is used as the viewing angle complementary sheet, and the light source 410, the light guide plate 420, the high brightness film 100, the prism sheet 210, and the lens film 240, the liquid crystal panel 430 is stacked in order.
  • the luminance is decreased at angles of ⁇ 30 and +30 or more.
  • the lens film 240 is additionally applied, it can be seen that the luminance deterioration problem is improved in the viewing angle range of the specific angle.
  • the lens film 240 when used together with the high brightness film 100, the luminance is increased as compared with the case where only the high brightness film is used. This is shown in Table 26 'When the lens film is used together, the LCD brightness and color reproducibility according to the YAG-based and LuAG-based phosphor content used in the high brightness film'.
  • FIG. 13B illustrates a case where the MOP 250 is used as the viewing angle complementary sheet, and the light source 410, the light guide plate 420, the high brightness film 100, the MOP 250, and the liquid crystal panel 430 from the bottom surface.
  • the structure is laminated in this order.
  • the MOP 250 since the MOP 250 has a structure in which a lens film is stacked on the prism, the MOP 250 has a brightness enhancement and a viewing angle complementary effect even without using a separate prism sheet.
  • the luminance is decreased at angles of ⁇ 30 and +30 or more.
  • the MOP 250 is further applied, the luminance deterioration problem may be improved in the viewing angle range of the specific angle.
  • FIG. 13C illustrates a case where the diffusion sheet 260 is used as the viewing angle complementary sheet, and the light source 410, the light guide plate 420, the high brightness film 100, the prism sheet 210, and the diffusion sheet ( 260 and the liquid crystal panel 430 are stacked in this order.
  • the luminance is decreased at angles of ⁇ 30 and +30 or more.
  • the diffusion sheet 260 is additionally applied, it can be seen that the luminance deterioration problem is improved in the viewing angle range of the specific angle.
  • the production examples of the phosphor coating layer, the pigment layer, the dye layer, the low refractive layer, and the like which constitute the high brightness film 100 of the present invention are shown.
  • the preparation examples of the present invention are only illustrative and are not intended to limit the present invention.
  • low refractive coating solution TU2359 was applied to the top of the manufactured phosphor coated PET film using a slot die coater, and then irradiated with ultraviolet light for about 5 seconds using an electrodeless lamp. It was. In this case, the light quantity of irradiated ultraviolet rays was 1000 mJ or less.
  • Pigment (soluble azo pigment (Carmine 6B), insoluble azo pigment (Toluidine Red), NaPhthol AS system (Fast Red FGR), Monoazo Yellow system (Monoazo Yellow G), Disazo Yellow system (Disazo Yellow GG) pigment) 0.01 ⁇ 5wt% Into the polymer matrix and stirred for 60 minutes. In this case, a monofunctional urethane acrylate oligomer and a monofunctional monomer were used as a polymer matrix. The photoinitiator is then added to the pigment and matrix mixture.
  • the photoinitiator may be selected from IG184, IG907, TPO, and CP4, and may be added in an amount of 1 to 5 wt%.
  • the prepared coating solution is applied to the upper surface of the phosphor coating layer or the other surface of the PET film with a Mayer Bar, and then irradiated for about 5 seconds using an electrodeless lamp.
  • the amount of light irradiated at this time is preferably 500 mj or less.
  • YAG-based phosphors 10-40 wt% of YAG-based phosphors (Y3A15012: Ce3 +) or 10-40 wt% of LuAG-based phosphors (Lu3Al5O12: Ce3 +) or mixed phosphors selected from 10-40 wt% of YAG-based phosphors and 1-20wt% of LuAG-based phosphors Pigment (soluble azo pigment (Carmine 6B), insoluble azo pigment (Toluidine Red), NaPhthol AS system (Fast Red FGR), Monoazo Yellow system (Monoazo Yellow G), Disazo Yellow system (Disazo Yellow GG) pigment) in phosphor 5 wt% of the mixture was added to the polymer matrix and stirred for 60 minutes.
  • soluble azo pigment Carmine 6B
  • insoluble azo pigment Toluidine Red
  • NaPhthol AS system Fest Red FGR
  • Monoazo Yellow system Monoazo Yellow G
  • Disazo Yellow GG Dis
  • a monofunctional urethane acrylate oligomer and a monofunctional monomer were used as the polymer matrix.
  • Two kinds of photoinitiators are added to the stirred phosphor and matrix mixture.
  • a coating liquid is prepared by mixing IG 184 and TPO two at 5: 5, respectively, and adding 5 wt%.
  • the coating solution thus prepared was coated on one side of the PET film with a Mayer Bar and then irradiated for about 5 seconds using an electrodeless lamp.
  • the amount of light irradiated at this time is preferably 1000mj or less.
  • Dye (4-Hydroxy-1H-benzotriazole, 2- (2-Hydroxy-5-methylphenyl) benzotriazole, Rhodamine B, Rhodamine 6G, 2,4-Bis [4- (N, N-dibenzylamino) -2,6-dihydroxyphenyl ] Squaraine, Phthalocyanine) 0.01 ⁇ 5wt% in a polymer matrix and stirred for 60 minutes.
  • a monofunctional urethane acrylate oligomer and a monofunctional monomer were used.
  • Two kinds of photoinitiators are added to the stirred phosphor and matrix mixture.
  • a photoinitiator a coating liquid is prepared by mixing IG 184 and TPO two at 5: 5, respectively, and adding 5 wt%.
  • the coating solution thus prepared is coated with a Mayer Bar on the upper side or the opposite side of the phosphor coating layer (a surface in contact with the PET) to a predetermined thickness and then irradiated for about 5 seconds using an electrodeless lamp.
  • the amount of light irradiated at this time is preferably 500 mj or less.
  • YAG-based phosphors 10-40 wt% of YAG-based phosphors (Y3A15012: Ce3 +) or 10-40 wt% of LuAG-based phosphors (Lu3Al5O12: Ce3 +) or mixed phosphors selected from 10-40 wt% of YAG-based phosphors and 1-20wt% of LuAG-based phosphors
  • Dyes (4-Hydroxy-1H-benzotriazole, 2- (2-Hydroxy-5-methylphenyl) benzotriazole, Rhodamine B, Rhodamine 6G, 2,4-Bis [4- (N, N-dibenzylamino) -2,6 -dihydroxyphenyl] squaraine, Phthalocyanine) 0.01 ⁇ 5wt% is mixed in the polymer matrix and stirred for 60 minutes.
  • NSP 53 of Nc chem was used as the polymer matrix.
  • Two kinds of photoinitiators are added to the stirred phosphor and matrix mixture.
  • a photoinitiator a coating liquid is prepared by mixing IG 184 and TPO two at 5: 5, respectively, and adding 5 wt%. The coating solution thus prepared was coated on one side of the PET film with a Mayer Bar and then irradiated for about 5 seconds using an electrodeless lamp. The amount of light irradiated at this time is preferably 1000mj or less.
  • Japan JSR Co., Ltd. low refractive coating solution TU2359 was subjected to single-sided and double-sided coating at a thickness of 100 nm using a slot die coater, and then irradiated with ultraviolet light for about 5 seconds using an electrodeless lamp.
  • the light quantity of irradiated ultraviolet rays was 1000 mJ or less.
  • the brightness and color reproducibility of the high brightness film of the present invention are evaluated using a liquid crystal display device and Topcon BM-7FAST color luminance meter.
  • the actual liquid crystal display used is UN55JS8500F (Samsung, 55-inch Blue-BLU), and the basic configuration is as follows. It consists of edge type blue-LED light source, light guide plate, POP film (Prism on Prism), and liquid crystal panel.
  • the high brightness film (HBF) of the present invention is placed between the light guide plate and the POP film to evaluate brightness and color reproducibility.
  • the distance between the BM-7FAST device and the liquid crystal display device (UN55JS8500F) is kept constant at 50 cm.
  • the present invention further comprises a DBEF on the POP film of the liquid crystal display device and evaluates the brightness and color reproducibility in the same manner.
  • the present invention further comprises a viewing angle complementary sheet on the POP film of the liquid crystal display device and evaluates luminance and color reproducibility in the same manner.
  • the second adhesive layer, 15 the lower polarizing plate
  • 140 phosphor coating layer
  • 150 absorbing pigment layer
  • back coating layer 210 prism sheet
  • R2 2nd supply roller
  • R3 adhesive application roller

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Abstract

La présente invention concerne un film à haute luminosité pour un affichage à cristaux liquides, une feuille composite, et une structure LCD l'utilisant. Plus spécifiquement, la présente invention concerne un film à haute luminosité pour un affichage à cristaux liquides, une feuille composite, et une structure LCD l'utilisant, le film à haute luminosité ayant une luminosité et une plage de reproduction de couleur améliorées en ayant une couche de revêtement de luminophore comprenant un luminophore à base de YAG et/ou un luminophore à base de LuAG formé sur une surface d'un film de base.
PCT/KR2017/013144 2016-11-18 2017-11-17 Film à haute luminosité pour affichage à cristaux liquides, feuille composite et structure d'affichage à cristaux liquides l'utilisant Ceased WO2018093211A1 (fr)

Applications Claiming Priority (84)

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KR10-2016-0154522 2016-11-18
KR20160154529 2016-11-18
KR10-2016-0154512 2016-11-18
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KR1020160154532A KR20180056525A (ko) 2016-11-18 2016-11-18 형광체를 적용한 휘도 향상 필름
KR10-2016-0154503 2016-11-18
KR10-2016-0154515 2016-11-18
KR20160154528 2016-11-18
KR20160154512 2016-11-18
KR20160154489 2016-11-18
KR10-2016-0154508 2016-11-18
KR20160154530 2016-11-18
KR20160154506 2016-11-18
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KR1020160154522A KR20180056521A (ko) 2016-11-18 2016-11-18 형광체를 적용한 휘도 향상 필름
KR10-2016-0154501 2016-11-18
KR10-2016-0154529 2016-11-18
KR1020160154508A KR20180056512A (ko) 2016-11-18 2016-11-18 형광체를 적용한 휘도 향상 필름
KR10-2016-0154528 2016-11-18
KR20160154491 2016-11-18
KR10-2016-0154481 2016-11-18
KR20160154538 2016-11-18
KR10-2016-0154542 2016-11-18
KR10-2016-0154487 2016-11-18
KR20160154548 2016-11-18
KR10-2016-0154530 2016-11-18
KR20160154487 2016-11-18
KR10-2016-0154494 2016-11-18
KR20160154542 2016-11-18
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KR10-2016-0154534 2016-11-18
KR20160154534 2016-11-18
KR10-2016-0154538 2016-11-18
KR20160154503 2016-11-18
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KR1020170150091A KR20180056569A (ko) 2016-11-18 2017-11-11 Lcd 구조
KR1020170150103A KR102061942B1 (ko) 2016-11-18 2017-11-11 Lcd 구조
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KR1020170150093A KR101961040B1 (ko) 2016-11-18 2017-11-11 휘도 향상 광학 시트 조합을 이용한 액정 표시 장치 및 액정표시장치용 복합시트
KR1020170150062A KR20180056541A (ko) 2016-11-18 2017-11-11 휘도 향상 필름과 그 제조방법
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KR1020170150106A KR20180056584A (ko) 2016-11-18 2017-11-11 Lcd 구조
KR10-2017-0150068 2017-11-11
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KR1020170150083A KR101961036B1 (ko) 2016-11-18 2017-11-11 휘도 향상 필름을 포함하는 액정표시장치
KR1020170150089A KR102013498B1 (ko) 2016-11-18 2017-11-11 고휘도 필름을 이용한 액정표시장치 및 액정표시장치용 복합시트
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KR1020170150080A KR20180056559A (ko) 2016-11-18 2017-11-11 휘도 향상 필름을 포함하는 액정표시장치
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KR1020170152674A KR20190055881A (ko) 2017-11-16 2017-11-16 휘도 향상 필름과 그 제조방법
KR10-2017-0152676 2017-11-16
KR1020170152670A KR20190055879A (ko) 2017-11-16 2017-11-16 Lcd 구조
KR10-2017-0152668 2017-11-16
KR10-2017-0152666 2017-11-16
KR10-2017-0152674 2017-11-16
KR1020170152672A KR20190055880A (ko) 2017-11-16 2017-11-16 Lcd 구조
KR10-2017-0152672 2017-11-16
KR20170152668 2017-11-16
KR10-2017-0152670 2017-11-16
KR1020170152666A KR20190055878A (ko) 2017-11-16 2017-11-16 휘도 향상 필름과 그 제조방법
KR20170152676 2017-11-16

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