WO2018093211A1 - High brightness film for liquid crystal display, composite sheet, and lcd structure using same - Google Patents

High brightness film for liquid crystal display, composite sheet, and lcd structure using same 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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WIPO (PCT)
Prior art keywords
high brightness
film
liquid crystal
phosphor
crystal display
Prior art date
Application number
PCT/KR2017/013144
Other languages
French (fr)
Korean (ko)
Inventor
은종혁
김병남
류민영
안호진
강신비
김영식
이환섭
이성훈
Original Assignee
주식회사 효성
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Priority claimed from KR1020160154515A external-priority patent/KR20180056516A/en
Priority claimed from KR1020160154522A external-priority patent/KR20180056521A/en
Priority claimed from KR1020160154532A external-priority patent/KR20180056525A/en
Priority claimed from KR1020160154508A external-priority patent/KR20180056512A/en
Priority claimed from KR1020170150091A external-priority patent/KR20180056569A/en
Priority claimed from KR1020170150062A external-priority patent/KR20180056541A/en
Priority claimed from KR1020170150068A external-priority patent/KR20180056547A/en
Priority claimed from KR1020170150093A external-priority patent/KR101961040B1/en
Priority claimed from KR1020170150076A external-priority patent/KR20180056555A/en
Priority claimed from KR1020170150089A external-priority patent/KR102013498B1/en
Priority claimed from KR1020170150087A external-priority patent/KR20180056565A/en
Priority claimed from KR1020170150106A external-priority patent/KR20180056584A/en
Priority claimed from KR1020170150097A external-priority patent/KR20180056575A/en
Priority claimed from KR1020170150100A external-priority patent/KR20180056578A/en
Priority claimed from KR1020170150065A external-priority patent/KR101961029B1/en
Priority claimed from KR1020170150083A external-priority patent/KR101961036B1/en
Priority claimed from KR1020170150080A external-priority patent/KR20180056559A/en
Priority claimed from KR1020170150103A external-priority patent/KR102061942B1/en
Priority claimed from KR1020170150070A external-priority patent/KR20180056549A/en
Priority claimed from KR1020170150072A external-priority patent/KR20180056551A/en
Priority claimed from KR1020170152672A external-priority patent/KR20190055880A/en
Priority claimed from KR1020170152666A external-priority patent/KR20190055878A/en
Priority claimed from KR1020170152674A external-priority patent/KR20190055881A/en
Priority claimed from KR1020170152670A external-priority patent/KR20190055879A/en
Application filed by 주식회사 효성 filed Critical 주식회사 효성
Publication of WO2018093211A1 publication Critical patent/WO2018093211A1/en

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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, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials 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

Abstract

The present invention relates to a high-brightness film for a liquid crystal display, a composite sheet, and an LCD structure using same. More specifically, the present invention relates to a high-brightness film for a liquid crystal display, a composite sheet, and an LCD structure using same, wherein the high-brightness film has enhanced brightness and color reproduction range by having a phosphor coating layer comprising a YAG-based phosphor and/or an LuAG-based phosphor formed on one surface of a base film.

Description

액정표시장치용 고휘도 필름, 복합시트 및 이를 이용한 LCD 구조High brightness film, composite sheet for LCD and LCD structure using same
본 발명은 액정표시장치(liquid crystal display; 이하 'LCD')용 고휘도 필름, 복합시트 및 이를 이용한 LCD 구조에 관한 것으로, 보다 상세하게는 기재필름의 일면에 YAG계 형광체 및 LuAG계 형광체 중 적어도 어느 하나의 형광체를 포함하는 형광체 코팅층을 코팅하여 휘도 및 색재현율이 향상된 액정표시장치용 고휘도 필름, 복합시트 및 이를 이용한 LCD 구조에 관한 것이다.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.
최근 디스플레이 시장은 대면적, 고해상도 경쟁에서 색감 경쟁으로 진화하고 있으며, 이로 인해 우수한 색감을 구현할 수 있는 디스플레이의 제조에 대한 관심이 높아지고 있다. Recently, the display market is evolving from a large area and a high resolution competition to a color competition, and as a result, there is a growing interest in manufacturing a display capable of realizing excellent colors.
차세대 디스플레이로 각광받고 있는 OLED(Organic Light-emitting Diode, 유기발광다이오드)는 색재현율을 NTSC 기준 100%까지 달성할 수 있지만 현재 사용되고 있는 LCD의 경우에는 70% 수준의 색재현율을 나타내고 있어 개선이 필요한 상황이다.OLED (Organic Light-Emitting Diode), which is spotlighted as the next generation display, can achieve color reproduction rate up to 100% of NTSC standard, but the LCD currently used has 70% color reproduction rate and needs improvement. Situation.
이에, LCD의 색재현율을 향상시키기 위해 양자점(Quantum Dot)을 이용한 방법이 적용되고 있지만 수분과 산소에 취약한 양자점의 고유 특성으로 인해 배리어 필름을 통한 밀봉 과정이 반드시 수반되어야 하는 문제점이 있다.Thus, a method using quantum dots has been applied to improve color reproduction of LCDs, but there is a problem that a sealing process must be accompanied by a barrier film due to the inherent characteristics of quantum dots vulnerable to moisture and oxygen.
한편, LCD에서는 콘트라스트(contrast)를 증가시키기 위해 휘도 향상 필름을 적용하고 있다. 휘도 향상 필름은 차광 테이프를 이용하여 BLU(Back Light Unit)에 부착될 수 있다. 이러한 휘도 향상 필름으로는 반사형 편광 필름이 사용되는데, 반사형 편광 필름은 고굴절률층과 저굴절률층이 교대로 반복 적층된 필름으로 상업적으로는 3M사의 이중휘도필름(Dual Brightness Enhancement Film, 이하 'DBEF') 등이 사용되고 있다.On the other hand, 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.
종래 휘도 향상 필름을 사용하는 일반 LCD TV에 적용되는 액정표시장치는 하부로부터 White LED층, 확산판, 프리즘 시트, DBEF 필름, 액정패널이 순서대로 쌓인 구조로 형성되어 있다. 즉, White LED에서 나온 빛이 프리즘 시트를 통해 집광되고 DBEF 필름을 통하면서 휘도가 향상되는 구조를 가지고 있다.Conventionally, 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.
그러나 종래 DBEF 휘도 향상 필름을 대체할 물질이 개발되지 않아 새로운 대체품을 개발해야 할 필요성이 제기되어 왔다.However, there has been a need to develop a new substitute because no material has been developed to replace the conventional DBEF brightness enhancing film.
따라서, DBEF를 사용하지 않거나 DBEF와 함께 사용하여 LCD의 휘도를 향상시킬 수 있는 필름을 개발한다면 디스플레이 시장의 활성화에 기여할 수 있을 것으로 기대된다. Therefore, developing a film that can improve the brightness of LCD by not using DBEF or using it with DBEF can contribute to the vitalization of the display market.
본 발명은 상기와 같은 사정을 감안하여 발명한 것으로, DBEF 필름 대신 사용하거나 DBEF와 함께 사용하여 휘도를 향상시킬 수 있는 형광체를 적용한 고휘도 필름을 제공하고, 이를 적용하여 휘도 및 색재현성을 향상시킬 수 있는 LCD(liquid crystal display)구조를 제공하는 것을 해결 과제로 한다.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.
전술한 기술적 과제를 해결하기 위한 수단으로서, As a means for solving the above technical problem,
본 발명의 일 실시예에 따른 액정표시장치용 고휘도 필름은, High brightness film for a liquid crystal display device according to an embodiment of the present invention,
기재 필름의 일면에 형광체 코팅층을 코팅하고, 상기 형광체 코팅층은 고분자 매트릭스에 YAG계 형광체만 포함하거나, 고분자 매트릭스에 LuAG계 형광체만 포함하거나 또는 고분자 매트릭스에 YAG계 형광체 및 LuAG계 형광체 혼합형광체를 포함하는 것을 특징으로 한다. 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.
또한, 상기 YAG계 형광체는 Y3A15012: Ce3 + (YAG:Ce), Tb3A15012:Ce3 +(TAG:Ce), Ca3(Sc,Mg)2Si3O12:Ce3+, Y3Mg2AlSi2O12:Ce3 + 중에서 적어도 어느 하나이고, LuAG계 형광체는 Lu3Al5O12:Ce3 +, Tb3Al5O12:Ce3 +, Lu2CaMg2Si3O12:Ce3 + 중에서 적어도 어느 하나인 것을 특징으로 한다. In addition, 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 + At least one, 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.
또한, YAG계 형광체만 포함시 코팅층 전체 대비 10 내지 40wt%, LuAG계 형광체만 포함시 코팅층 전체 대비 10 내지 40wt%, YAG계 형광체 및 LuAG계 형광체 혼합형광체 포함시 코팅층 전체 대비 YAG계 형광체는 10 내지 40 wt%, LuAG계 형광체는 1 내지 20wt% 포함하는 것을 특징으로 한다. In addition, 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%.
또한, 상기 형광체 코팅층의 두께는 10 내지 100 ㎛인 것을 특징으로 한다. In addition, the thickness of the phosphor coating layer is characterized in that 10 to 100 ㎛.
또한, 기재 필름 및 형광체 코팅층 중 적어도 어느 하나의 일면에 흡수 안료를 포함하는 흡수 안료층을 코팅하는 것을 특징으로 한다. In addition, 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.
또한, 형광체 코팅층의 내부에 흡수 안료가 분산되는 것을 특징으로 한다. In addition, the absorbing pigment is characterized in that the inside of the phosphor coating layer is dispersed.
또한, 흡수 안료는 380~430nm, 480~510nm, 560~600nm 중 적어도 어느 하나의 파장대역의 광을 흡수하는 것을 특징으로 한다. In addition, the absorption pigment is characterized by absorbing light in at least one of the wavelength band of 380 ~ 430nm, 480 ~ 510nm, 560 ~ 600nm.
또한, 상기 흡수 안료층은 용성 아조 안료 (Carmine 6B), 불용성 아조 안료(Toluidine Red), NaPhthol AS계(Fast Red FGR), Monoazo Yellow계 (Monoazo Yellow G), Disazo Yellow계( Disazo Yellow GG) 안료 중에서 적어도 어느 하나를 포함하는 것을 특징으로 한다. In addition, 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.
또한, 흡수 안료는 흡수 안료층에 0.01 내지 5wt% 포함되는 것을 특징으로 한다. In addition, the absorbing pigment is characterized in that it is contained 0.01 to 5wt% in the absorbing pigment layer.
또한, 흡수 안료는 형광체 코팅층에 0.01 내지 5wt% 포함되는 것을 특징으로 한다. In addition, the absorbing pigment is characterized in that it comprises 0.01 to 5wt% in the phosphor coating layer.
또한, 상기 흡수 안료층의 두께는 0.1 내지 15㎛인 것을 특징으로 한다. In addition, the thickness of the absorbing pigment layer is characterized in that 0.1 to 15㎛.
또한, 기재 필름 및 형광체 코팅층 중 적어도 어느 하나의 일면에 흡수 염료를 포함하는 흡수 염료층을 코팅하는 것을 특징으로 한다. In addition, 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.
또한, 형광체 코팅층의 내부에 흡수 염료가 분산되는 것을 특징으로 한다. In addition, the absorbing dye is characterized in that the inside of the phosphor coating layer is dispersed.
또한, 흡수 염료는 380~430nm, 480~510nm, 560~600nm 중 적어도 어느 하나의 파장대역의 광을 흡수하는 것을 특징으로 한다. In addition, the absorbing dye is characterized by absorbing light of at least one wavelength band of 380 ~ 430nm, 480 ~ 510nm, 560 ~ 600nm.
또한, 흡수 염료는 히드록시 벤조트리아졸(hydroxy -benzotriazole)계, 로다민(rhodamine, RH)계, 스쿠아린 (squarine, SQ)계, 시아닌(cyanine, CY)계 및 테트라아자포르피린(Tetra aza porphyrin, TAP )계 염료 중에서 적어도 어느 하나를 포함하는 것을 특징으로 한다. In addition, 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.
또한, 염료는 흡수 염료층에 0.01 내지 5wt% 포함되는 것을 특징으로 한다. In addition, the dye is characterized in that it comprises 0.01 to 5wt% in the absorbing dye layer.
또한, 염료는 형광체 코팅층에 0.01 내지 5wt% 포함되는 것을 특징으로 한다. In addition, the dye is characterized in that it comprises 0.01 to 5wt% in the phosphor coating layer.
또한, 상기 흡수 염료층의 두께는 0.01 내지 20㎛ 인 것을 특징으로 한다. In addition, the thickness of the absorbing dye layer is characterized in that 0.01 to 20㎛.
또한, 형광체 코팅층이 코팅되지 않은 기재 필름의 일면에 PMMA 입자 또는 PMMA 입자와 대전방지제를 포함하는 백코팅층을 더 포함하는 것을 특징으로 한다. In addition, 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.
또한, PMMA 입자는 백코팅층 대비 0.1 내지 5wt% 포함하는 것을 특징으로 한다. In addition, PMMA particles are characterized in that it comprises 0.1 to 5wt% compared to the back coating layer.
또한, 대전방지제는 백코팅층 대비 0.01 내지 3wt% 포함하는 것을 특징으로 한다. In addition, the antistatic agent is characterized in that it comprises 0.01 to 3wt% compared to the back coating layer.
또한, 백코팅층의 두께는 1 내지 10㎛ 인 것을 특징으로 한다. In addition, the thickness of the back coating layer is characterized in that 1 to 10㎛.
또한, 기재필름 및 형광체 코팅층 중 적어도 하나의 외면에 불소계 폴리올을 주쇄로 가지는 우레탄 아크릴레이트 올리고머 및 중공나노실리카를 포함하는 저굴절층이 형성되는 것을 특징으로 한다. In addition, 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.
또한, 우레탄 아크릴레이트 올리고머는 상기 저굴절층에 대해 10 내지 20wt% 포함되는 것을 특징으로 한다. In addition, the urethane acrylate oligomer is characterized in that it comprises 10 to 20wt% based on the low refractive layer.
또한, 중공나노실리카는 상기 저굴절층에 대해 30 내지 70wt% 포함되는 것을 특징으로 한다. In addition, the hollow nano silica is characterized in that it comprises 30 to 70wt% with respect to the low refractive layer.
또한, 저굴절층의 두께는 70 내지 120nm 인 것을 특징으로 한다. In addition, the thickness of the low refractive layer is characterized in that 70 to 120nm.
또한, 저굴절층의 굴절율은 1.32 내지 1.42인 것을 특징으로 한다. In addition, the refractive index of the low refractive layer is characterized in that 1.32 to 1.42.
본 발명의 일 실시예에 따른 복합시트는, Composite sheet according to an embodiment of the present invention,
상기 고휘도 필름 및 프리즘 시트를 접착제로 합지한 것을 특징으로 한다. The high brightness film and the prism sheet are laminated with an adhesive.
또한, 상기 고휘도 필름 및 DBEF를 접착제로 합지한 것을 특징으로 한다. In addition, the high brightness film and DBEF is characterized by laminating with an adhesive.
또한, 상기 고휘도 필름, 프리즘 시트 및 DBEF를 순서대로 접착제로 합지한 것을 특징으로 한다. In addition, the high-bright film, prism sheet and DBEF are laminated in order with an adhesive.
또한, 상기 고휘도 필름, 프리즘 시트 및 시야각 보완시트를 접착제로 합지한 것을 특징으로 한다. In addition, the high brightness film, the prism sheet and the viewing angle complementary sheet is characterized in that the laminated with an adhesive.
또한, 상기 시야각 보완시트는 렌즈필름, MOP 또는 확산시트인 것을 특징으로 한다. In addition, the viewing angle complementary sheet is characterized in that the lens film, MOP or diffusion sheet.
본 발명의 일실시예에 따른 고휘도 필름을 이용한 LCD 구조는, LCD structure using a high brightness film according to an embodiment of the present invention,
액정패널과 액정패널의 저면에 설치되는 백라이트 유닛을 포함하되, 상기 백라이트 유닛은 반사판, 도광판, 프리즘시트, 상확산판이 차례로 적층되고, 도광판의 양측에는 청색 LED가 설치되며, 상기 고휘도 필름은 프리즘시트와 상확산판 사이 또는 도광판과 프리즘시트 사이에 적층되는 것을 특징으로 한다. It 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.
또한, 액정패널과 액정패널의 저면에 설치되는 백라이트 유닛을 포함하되, 상기 백라이트 유닛은 확산판, 프리즘시트, 상확산판이 차례로 적층되고, 확산판의 직하에는 청색 LED가 설치되며, 상기 고휘도 필름은 프리즘시트와 상확산판 사이 또는 확산판과 프리즘시트 사이에 적층되는 것을 특징으로 한다. In addition, 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.
또한, 상기 프리즘 시트 위에 DBEF를 더 포함하는 것을 특징으로 한다.In addition, the prism sheet is characterized in that it further comprises a DBEF.
또한, 상기 프리즘 시트 위에 시야각 보완시트를 더 포함하는 것을 특징으로 한다. In addition, the prism sheet is characterized in that it further comprises a viewing angle supplement sheet.
또한, 상기 시야각 보완시트는 렌즈필름, MOP 또는 확산시트인 것을 특징으로 한다. In addition, the viewing angle complementary sheet is characterized in that the lens film, MOP or diffusion sheet.
본 발명의 기재 필름의 일면에 형광체 코팅층을 형성한 고휘도 필름은 기존 휘도 향상 필름 대비 우수한 휘도 및 색재현율을 구현할 수 있다. 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.
또한, 액정표시장치에 적용시 기존 LCD TV 대비 우수한 색감을 구현할 수 있고, 우수한 콘트라스트(contrast)를 구현할 수 있다. In addition, when applied to a liquid crystal display device it can implement a superior color compared to the existing LCD TV, it is possible to implement an excellent contrast (contrast).
도 1은 고휘도 필름의 단면도로서, 도 1의 (a)는 YAG계 형광체를 포함하는 형광체 코팅층, 도 1의 (b)는 LuAG계 형광체를 포함하는 형광체 코팅층, 도 1의 (c)는 YAG계 형광체 및 LuAG계 형광체를 포함하는 형광체 코팅층을 각각 포함하는 경우의 단면도이다. 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.
도 2는 본 발명에 따른, 흡수 안료층이 코팅된 고휘도 필름의 단면도이다. 2 is a cross-sectional view of a high brightness film coated with an absorbing pigment layer according to the present invention.
도 3은 본 발명에 따른, 형광체 코팅층에 흡수 안료를 포함하는 고휘도 필름의 단면도이다. 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.
도 4는본 발명에 따른, 흡수 염료층이 코팅된 고휘도 필름의 단면도이다. 4 is a cross-sectional view of a high brightness film coated with an absorbing dye layer according to the present invention.
도 5는 본 발명에 따른, 형광체 코팅층에 흡수 염료를 포함하는 고휘도 필름의 단면도이다. 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.
도 6은 본 발명에 따른, 백코팅층이 형성된 고휘도 필름의 단면도이다. 6 is a cross-sectional view of a high brightness film having a back coating layer according to the present invention.
도 7은 본 발명에 따른, 저굴절층이 형성된 고휘도 필름의 단면도이다. 7 is a cross-sectional view of a high brightness film having a low refractive index layer according to the present invention.
도 8은 본 발명에 따른, 고휘도 필름, 프리즘 시트 및 DBEF가 순서대로 합지된 복합시트의 단면도이다. 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.
도 9는 본 발명에 따른, 고휘도 필름 및 시야각 보완시트가 합지된 복합시트의 단면도이다. 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.
도 10은 본 발명의 고휘도 필름과 다른 광학 필름을 라미네이션 하는 공정 모식도이다. It is a schematic diagram of the process of laminating the high brightness film and another optical film of this invention.
도 11의 (a)~(d)는 본 발명에 따른 LCD 구조의 서로 다른 개략적 구현예를 나타내는 도면이다.11A to 11D are views showing different schematic implementations of the LCD structure according to the present invention.
도 12는 본 발명의 고휘도 필름과 DBEF를 포함하는 LCD 구조의 개략도이다. 12 is a schematic diagram of an LCD structure including the high brightness film and DBEF of the present invention.
도 13은 본 발명의 고휘도 필름과 시야각 보완시트를 포함하는 LCD 구조의 개략도이다. 13 is a schematic diagram of an LCD structure including a high brightness film and a viewing angle complementary sheet of the present invention.
도 14는 본 발명에 따른, 청색LED 전방에 도광판, 고휘도 필름, 프리즘 시트, 렌즈필름 및 액정패널을 순서대로 배치한 경우 LCD의 시야각 측정결과를 도시한 것이다. 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.
도 15는 본 발명에 따른, 청색LED 전방에 도광판, 고휘도 필름, MOP 및 액정패널을 순서대로 배치한 경우 LCD의 시야각 측정결과를 도시한 것이다.  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.
도 16은 본 발명에 따른, 청색LED 전방에 도광판, 고휘도 필름, 프리즘 시트, 확산시트 및 액정패널을 순서대로 배치한 경우 LCD의 시야각 측정결과를 도시한 것이다. 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.
본 발명을 다음에서 상세하게 설명하기로 하며, 다음의 구현예 또는 실시예는 단지 본 발명의 개념에 따른 실시 예들을 설명하기 위한 목적으로 예시된 것으로, 본 발명의 개념에 따른 실시 예들은 다양한 형태들로 실시될 수 있으며, 본 발명이 반드시 이에 한정되는 것은 아니다. DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in detail below, and the following embodiments or examples are merely illustrated for the purpose of describing embodiments in accordance with the inventive concept, and the embodiments according to the inventive concept are in various forms. The present invention is not necessarily limited thereto.
도 1의 (a)~(c)는 본 발명에 따른 고휘도 필름 (High Brightness Film, HBF)의 단면도를 나타내는 것으로, 기재필름(110)의 일면에 형광체 코팅층(140)을 코팅하여 고휘도 필름(100)을 형성한다. 상기 형광체 코팅층(140)은 형광체 및 고분자 매트릭스를 포함하는 것을 특징으로 한다. 보다 구체적으로 도 1의 (a)와 같이 고분자 매트릭스에 YAG계 형광체(120)만 포함하거나 (b)와 같이 고분자 매트릭스에 LuAG계 형광체(130)만 포함하거나 (c)와 같이 고분자 매트릭스에 YAG계 형광체(120) 및 LuAG계 형광체(130)를 모두 포함하는 혼합 형광체를 포함할 수 있다. 1 (a) to (c) is a cross-sectional view of a high brightness film (HBF) according to the present invention, a high brightness film 100 by coating the phosphor coating layer 140 on one surface of the base film 110 ). 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.
본 발명의 기재필름(110)은 PET, TAC, PC, Polyimide, Acryl film 등이 사용될 수 있다. The base film 110 of the present invention may be used, such as PET, TAC, PC, Polyimide, Acryl film.
상기 기재필름(110)의 일면에 형광체 코팅층(140)을 형성할 수 있으며, 상기 형광체 코팅층(140)은 휘도 및 색재현율 향상 효과를 나타내기 위하여 황색 형광을 발하는 형광체 및 고분자 매트릭스를 포함하며, 상기 형광체는 YAG(Yittrium aluminum garnet)계 형광체(120) 및 LuAG(Lutetium aluminum garnet)계 형광체(130) 중에서 적어도 어느 하나를 포함할 수 있다. 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.
상기 YAG계 형광체(120)는 Y3A15012: Ce3 + (YAG:Ce), Tb3A15012:Ce3 +(TAG:Ce), Ca3(Sc,Mg)2Si3O12:Ce3+, Y3Mg2AlSi2O12:Ce3 + 중에서 적어도 어느 하나인 것이 바람직하다. 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.
상기 LuAG계 형광체(130)는 Lu3Al5O12:Ce3 +, Tb3Al5O12:Ce3 +, Lu2CaMg2Si3O12:Ce3 + 중에서 적어도 어느 하나인 것이 바람직하다. The LuAG based fluorescent material 130 Lu 3 Al 5 O 12: Ce 3 +, Tb 3 Al 5 O 12: Ce 3 +, Lu 2 CaMg 2 Si 3 O 12: it is preferable that at least one of a Ce 3 + .
도 1의 (a)와 같이 형광체 코팅층(140)에 YAG계 형광체(120)를 포함하는 경우, 형광체 코팅층(140) 전체 대비 10 내지 40wt% 포함하는 것이 바람직하다. When 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.
도 1의 (b)와 같이 형광체 코팅층(140)에 LuAG계 형광체(130)를 포함하는 경우, 형광체 코팅층(140) 전체 대비 10 내지 40wt% 포함하는 것이 바람직하다. When 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.
도 1의 (c)와 같이 형광체 코팅층(140)에 YAG계 형광체(120) 및 LuAG계 형광체(130)를 혼합한 혼합형광체 포함시 형광체 코팅층(140) 전체 대비 YAG계 형광체는 10 내지 40 wt%, LuAG계 형광체는 1 내지 20wt% 포함하는 것이 바람직하다.As shown in (c) of FIG. 1, when the mixed phosphor in which the YAG phosphor 120 and the LuAG phosphor 130 are mixed in the phosphor coating layer 140 is included, 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%.
YAG계 형광체의 함량 하한값이 10wt% 미만이면 휘도 향상 효과가 미미하고, 상한값 40wt% 초과이면 LCD TV에서 중요하게 보는 색재현율이 낮아지기 때문에 YAG 함량은 10 wt% 내지 40 wt% 범위인 것이 바람직하다.If 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.
LuAG 형광체의 함량 하한값이 1 wt% 미만이면 휘도 향상 효과가 미미하고, 상한값인 20 wt%를 초과하면 LCD TV 에서 중요한 색재현율이 낮아지기 때문에 LuAG 함량은 1 wt% 내지 20 wt% 범위인 것이 바람직하다.If the lower limit of the 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. .
하기 표 1 내지 4에 YAG계 형광체와 LuAG계 형광체 함량에 따른 휘도 및 색재현율을 나타내었다. Tables 1 to 4 show luminance and color reproducibility according to the content of YAG-based phosphors and LuAG-based phosphors.
YAG계 형광체 함량에 따른 휘도 Luminance according to YAG-based phosphor content
구분division Ref. DBEF(LED TV)Ref. DBEF (LED TV) Ref. DBEF(QD TV)Ref. DBEF (QD TV) YAG5wt%YAG5wt% YAG10wt%YAG10wt% YAG20wt%YAG20wt% YAG30wt%YAG30wt% YAG40wt%YAG40wt% YAG50wt%YAG50wt%
휘도[nit]Luminance [nit] 430430 450450 230230 430430 480480 510510 540540 500500
XX 0.27300.2730 0.25930.2593 0.21500.2150 0.23500.2350 0.25500.2550 0.26300.2630 0.27500.2750 0.30500.3050
YY 0.29250.2925 0.29110.2911 0.22770.2277 0.25770.2577 0.28770.2877 0.29030.2903 0.29350.2935 0.31200.3120
색재현성[%]Color reproducibility [%] 81.681.6 100100 79.879.8 81.381.3 82.682.6 82.382.3 81.381.3 75.075.0
LuAG계 형광체 함량에 따른 휘도 향상 효과Luminance Improvement Effect by LuAG-Based Phosphor Content
구분division Ref. DBEFRef. DBEF (LED TV)(LED TV) Ref. DBEFRef. DBEF (( QDQD TV) TV) LuAGLuAG 함량 wt%Content wt% LuAG 10LuAG 10 LuAG 20 LuAG 20 LuAG 30 LuAG 30 LuAG 40LuAG 40
휘도 [nit]Luminance [nit] 430430 450450 휘도 [nit]Luminance [nit] 431431 474474 498498 522522
색재현성Color reproducibility [[ %% ]] 81.681.6 100100 색재현성Color reproducibility [[ %% ]　] 81.381.3 82.482.4 82.482.4 81.281.2
YAG계 형광체 및 LuAG계 형광체 함량에 따른 휘도 및 색재현율 향상 효과Improvement of Luminance and Color Reproduction Rate According to Contents of YAG and LuAG Phosphors
구분division Ref. DBEFRef. DBEF (LED TV)(LED TV) Ref. Ref. DBEFDBEF (( QDQD TV) TV) YAGYAG :  : LuAGLuAG 함량 wt%Content wt% YAG 10YAG 10 YAG 10 YAG 10 LuAG 5 LuAG 5 YAG 10 YAG 10 LuAG 10 LuAG 10 YAG 10 YAG 10 LuAG 20 LuAG 20
휘도 [nit]Luminance [nit] 430430 450450 휘도 [nit]Luminance [nit] 430430 450450 500500 550550
XX 0.27300.2730 0.25930.2593 XX 0.23500.2350 0.24060.2406 0.25310.2531 0.27490.2749
YY 0.29250.2925 0.29110.2911 YY 0.2577 0.2577 0.2701 0.2701 0.2860 0.2860 0.2970 0.2970
색재현성Color reproducibility [[ %% ]] 81.681.6 100100 색재현성Color reproducibility [[ %% ]　] 81.381.3 81.881.8 82.482.4 82.682.6
구분division Ref. Ref. DBEFDBEF (LED TV)(LED TV) Ref. Ref. DBEFDBEF (( QDQD TV) TV) YAGYAG :  : LuAGLuAG 함량 content wt% wt% YAGYAG 20 20 YAG YAG 20 20 LuAG LuAG 5 5 YAG YAG 20 20 LuAG LuAG 10 10 YAG YAG 20 20 LuAG LuAG 20 20
휘도 [nit]Luminance [nit] 430430 450450 휘도 [nit]Luminance [nit] 480480 520520 560560 600600
XX 0.27300.2730 0.25930.2593 XX 0.25500.2550 0.26060.2606 0.27310.2731 0.28010.2801
YY 0.29250.2925 0.29110.2911 YY 0.2877 0.2877 0.2801 0.2801 0.2910 0.2910 0.2970 0.2970
색재현성Color reproducibility [[ %% ]] 81.681.6 100100 색재현성Color reproducibility [[ %% ]　] 82.682.6 82.382.3 82.482.4 82.682.6
구분division Ref. Ref. DBEFDBEF (LED TV)(LED TV) Ref. Ref. DBEFDBEF (( QDQD TV) TV) YAGYAG :  : LuAGLuAG 함량 content wt%wt% YAGYAG 40 40 YAGYAG 40 40 LuAG LuAG 5 5 YAGYAG 40 40 LuAG LuAG 10 10 YAGYAG 40 40 LuAG LuAG 20 20
휘도 [nit]Luminance [nit] 430430 450450 휘도 [nit]Luminance [nit] 540540 550550 580580 620620
XX 0.27300.2730 0.25930.2593 XX 0.27500.2750 0.29800.2980 0.30310.3031 0.33490.3349
YY 0.29250.2925 0.29110.2911 YY 0.2935 0.2935 0.2966 0.2966 0.31400.3140 0.3422 0.3422
색재현성Color reproducibility [[ %% ]] 81.681.6 100100 색재현성Color reproducibility [[ %% ]　] 81.381.3 81.281.2 81.481.4 81.681.6
형광체 혼합비율에 따른 휘도 및 색재현성Luminance and Color Reproducibility According to Phosphor Mixing Ratio
YAG : LuAGYAG: LuAG YAG 5YAG 5 YAG : LuAGYAG: LuAG YAG 50YAG 50
함량 wt% content wt% LuAG 5LuAG 5 LuAG 10 LuAG 10 LuAG 20 LuAG 20 함량 wt% content wt% LuAG 5LuAG 5 LuAG 10 LuAG 10 LuAG 20 LuAG 20
휘도 [nit] Luminance [ nit ] 380380 390390 430430 휘도 [nit] Luminance [ nit ] 610610 630630 640640
색재현성[ % ]　 Color reproducibility [ % ] 79.379.3 79.379.3 78.378.3 색재현성[ % ]　 Color reproducibility [ % ] 72.372.3 71.371.3 71.371.3
본 발명의 형광체 코팅층(140)은 다음과 같은 방법으로 제조한다. 상기 YAG계 형광체(120) 및 LuAG계 형광체(130)중에서 선택된 적어도 어느 하나의 형광체와 물리적 특성 확보를 위한 고분자 매트릭스(Matrix)를 조합하여 형광체를 포함하는 코팅액을 제조한다. 구체적으로, 상기 고분자 매트릭스 및 상기 형광체를 교반기에 넣어 고르게 분산시켜 형광체를 포함하는 코팅액을 제조한다. 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.
상기 고분자 매트릭스는 단관능 우레탄아크릴레이트 올리고머, 단관능 모노머 등이 있으며, 광개시제, 레벨링제, 소포제 등을 첨가할 수 있다. 상기 광 개시제로는 IG184, IG907, TPO, CP4 등이 있으며, 이중 바람직한 광 개시제는 IG 184, TPO 이다. 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. Examples of the photoinitiator include IG184, IG907, TPO, CP4, and the like. Of these, the preferred photoinitiators are IG184, TPO.
특히 상기 물리적 특성은 연필경도, 부착력, 컬(Curl), 내굴곡성 등의 특성을 의미한다. In particular, the physical properties refer to properties such as pencil hardness, adhesion, curl, flex resistance, and the like.
-연필경도 : 코팅층 표면 단단함 정도를 측정하기 위하여 다양한 경도의 연필을 일정한 하중으로 표면을 긁어서 경도 평가 (규격: JIS K 5400-8.4)-Pencil hardness: Hardness evaluation by scratching the surface with a constant load with a pencil of various hardness to measure the hardness of the coating layer (standard: JIS K 5400-8.4)
-부착력 : 기재 필름과 코팅층의 밀착력을 측정하기 위하여 코팅층을 일정한 간격 10*10 (격자 간격 1mm)으로 흠집을 내고 Tape를 붙였다 떼어 내어 코팅층과 기재층의 부착성을 평가 (규격: JIS K 5400-8.5)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)
-Curl : 코팅필름을 100mm * 100mm 로 Cutting하여 코팅필름의 네모세리의 높이를 측정하여 필름의 Curl(말림 )특성 평가-Curl: Cut the coating film into 100mm * 100mm and measure the height of the square of the coating film to evaluate the curl property of the film
(Curl이 심하면 필름이 돌돌 말려 작업성이 저하됨.)(If curl is severe, the film curls and the workability is reduced.)
-내굴곡성 : 둥근막대에 필름을 둥글게 말아 코팅필름과 코팅 도막의 유연성 평가.Flexural resistance: Flexibility evaluation of coating film and coating film by rolling the film round on a round bar.
본 발명은 상기 코팅액을 Mayer Bar로 기재필름(110)의 한쪽면에 도포 후 무전극 램프를 이용하여 UV를 조사하여 경화시키고, 이를 통해 형광체 코팅층(140)이 형성된 고휘도 필름(100)을 제조할 수 있다. In the present invention, 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.
상기 코팅층(140)의 코팅을 수행하는 경우 기재 필름(110)의 단면에 코팅할 수 있다.When performing the coating of the coating layer 140 may be coated on the cross section of the base film (110).
본 발명은 형광체 코팅층(140)의 두께가 두꺼워 질수록 컬 특성이 악화되어 고분자 매트릭스에 적용 가능한 수지가 한정적이게 된다. 따라서 코팅층(140)의 두께가 너무 두꺼워지지 않도록 해야 한다. 본 발명 고휘도 필름의 휘도 및 색재현율 특성은 형광체 코팅층의 각 두께 및 형광체 함량으로 조절 가능하다. In the present invention, as 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.
상기 형광체 코팅층(140)의 두께는 10 내지 100 ㎛ 인 것이 바람직하다. 상기 코팅층의 코팅 두께가 10㎛ 미만이면 형광체가 돌출되어 외관의 불량을 야기하고, 100㎛ 초과이면 코팅시 컬(Curl) 특성이 악화되어 고분자 매트릭스로 적용 가능한 수지가 제한되기 때문이다. 본 발명 형광체 코팅층(140)의 코팅 두께에 다른 컬 특성을 하기 표 5에 나타내었다. The thickness of the phosphor coating layer 140 is preferably 10 to 100 ㎛. This is because when the coating thickness of the coating layer is less than 10 μm, the phosphor protrudes to cause a poor appearance, and when the coating thickness is more than 100 μm, 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.
코팅 두께에 따른 컬(Curl)Curl according to coating thickness
단면section 코팅두께[㎛]Coating thickness [㎛] 55 1010 3030 5050 7070 100100 120120 150150
Curl[mm]Curl [mm] 00 33 44 77 1010 1818 2222 2525
본 발명의 다른 실시예에 따른 고휘도 필름(100)은 보다 선명한 색재현율을 얻기 위하여 특정 파장 대역을 흡수하는 흡수 안료(Pigment) 1종 이상을 고분자 매트릭스와 함께 교반기에 넣어 고르게 분산시켜 제조한 흡수 안료층(150)을 더 포함할 수 있다. The high brightness film 100 according to another embodiment of the present invention 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.
상기 제조된 흡수 안료층(150)을 Mayer Bar로 기재필름 및 형광체 코팅층 중 적어도 어느 하나의 일면에 형성할 수 있다. 도 2 와 같이 기재 필름(110)의 한 면 및 형광체 코팅층(140)의 한 면 중 적어도 한면에 소정 두께로 도포하여 코팅한 후 무전극 램프를 이용해 경화시킨다. 구체적으로 흡수 안료층(150)은 도 2의 (a) 내지 (c) 각각에서 흡수 안료층(150)으로 표시된 적어도 하나의 층에 형성될 수 있다. 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.
본 발명의 흡수 안료층(150)에 사용되는 상기 고분자 매트릭스는 단관능 우레탄아크릴레이트 올리고머, 단관능 모노머 등이 있으며, 광개시제, 레벨링제, 소포제 등을 첨가할 수 있다. 상기 광 개시제로는 IG184, IG907, TPO, CP4 등이 있으며, 이중 바람직한 광 개시제는 IG 184, TPO 이다.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. Examples of the photoinitiator include IG184, IG907, TPO, CP4, and the like. Of these, the preferred photoinitiators are IG184, TPO.
본 발명의 흡수 안료층(150)에 포함되는 흡수 안료는 용성 아조 안료(Carmine 6B), 불용성 아조 안료(Toluidine Red), NaPhthol AS계(Fast Red FGR), Monoazo Yellow계 (Monoazo Yellow G) 및 Disazo Yellow계(Disazo Yellow GG) 안료 중에서 적어도 어느 하나일 수 있다.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.
또한, 본 발명의 흡수 안료는 380 ~ 430 nm, 480 ~ 510nm 및 560 ~ 600nm 중 적어도 어느 하나의 파장대역의 광을 흡수하는 안료인 것이 바람직하다. In addition, 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.
이 때, 바람직한 흡수 안료층(150)의 두께는 0.1 ~ 15 ㎛ 이다. 상기 흡수 안료층의 두께가 0.1 ㎛ 미만인 경우 색재현율 상승효과가 미흡하고, 15 ㎛ 초과의 경우 휘도 저하가 발생된다. At this time, the thickness of the preferable absorbing pigment layer 150 is 0.1-15 micrometers. When the thickness of the absorbing pigment layer is less than 0.1 μm, the effect of synergistic color reproduction is insufficient, and when the thickness of the absorbing pigment layer is more than 15 μm, luminance decreases.
상기 흡수 안료층(150)은 흡수 안료를 0.01 내지 5wt% 포함하는 것이 바람직하다. 0.01 wt% 미만인 경우 색재현율 향상 효과가 없고, 5wt%를 초과하는 경우 휘도가 저하된다. 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.
흡수 안료 종류별로 흡수 안료 함량 및 흡수 안료층의 코팅 두께에 따른 휘도 및 색재현율을 하기 표 6 내지 10에 나타내었다. 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.
Figure PCTKR2017013144-appb-T000001
Figure PCTKR2017013144-appb-T000001
Figure PCTKR2017013144-appb-T000002
Figure PCTKR2017013144-appb-T000002
Figure PCTKR2017013144-appb-T000003
Figure PCTKR2017013144-appb-T000003
Figure PCTKR2017013144-appb-T000004
Figure PCTKR2017013144-appb-T000004
Figure PCTKR2017013144-appb-T000005
Figure PCTKR2017013144-appb-T000005
상기 표 6 내지 10의 휘도 Data는 QD Ref.(450nit)와 대비하여 "%"로 환산한 data이다. The luminance data of Tables 6 to 10 are data converted into "%" as compared to QD Ref. (450nit).
상기 표 6 내지 표 10은 모두 동일하게 YAG계 형광체 : LuAG계 형광체의 혼합 비율을 20wt% : 2wt% 로 하였고, 형광체 코팅층(140)의 두께를 50 ㎛ 로 제막하고, 흡수 안료층(150)의 두께를 0.1 ㎛로 고정하고, 흡수 안료층에 각 흡수 안료가 0.1wt% 포함되도록 고정하여 제조한 고휘도 필름(100)을 사용하여 측정하였다. In Tables 6 to 10, 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 μm. The thickness was fixed to 0.1 μm and measured using a high brightness film 100 prepared by fixing the absorbing pigment layer so that each absorbing pigment contained 0.1 wt%.
본 발명의 또 다른 실시예에 따른 고휘도 필름(100)은 보다 선명한 색재현율을 얻기 위하여 특정 파장 대역을 흡수하는 흡수 안료 1종을 형광체 코팅층(140)의 내부에 분산시킬 수 있다. The high brightness film 100 according to another embodiment of the present invention may disperse one absorbing pigment absorbing a specific wavelength band in the phosphor coating layer 140 in order to obtain a clearer color reproduction.
도 3과 같이 본 발명의 고휘도 필름(100)은 기재필름(110)의 일면에 형광체 코팅층(140)을 형성하고, 상기 형광체 코팅층(140) 내부에 흡수 안료(160)가 분산되어 있는 형태일 수 있다. As shown in FIG. 3, 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.
이 때, 상기 형광체 코팅층(140)의 내부에는 흡수안료(160)와 함께 도 3의 (a)에 도시된 바와 같이 YAG계 형광체(120)가 분산되거나, 도 3의 (b)에 도시된 바와 같이 LuAG계 형광체(130)가 분산되거나, 도 3의 (c)에 도시된 바와 같이 YAG계 형광체 및 LuAG계 형광체의 혼합 형광체가 분산될 수 있다. At this time, 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). As described above, 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.
본 발명의 형광체 코팅층(140)에 분산되는 흡수 안료(160)는 용성 아조 안료(Carmine 6B), 불용성 아조 안료(Toluidine Red), NaPhthol AS계(Fast Red FGR), Monoazo Yellow계 (Monoazo Yellow G) 및 Disazo Yellow계(Disazo Yellow GG) 안료 중에서 적어도 어느 하나를 포함할 수 있다.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.
또한, 본 발명의 흡수 안료(160)는 380 ~ 430 nm, 480 ~ 510nm 및 560 ~ 600nm 중 적어도 어느 하나의 파장대역의 광을 흡수하는 안료인 것이 바람직하다. In addition, 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.
상기 형광체 코팅층(140)은 흡수 안료(160)를 0.01 내지 5wt% 포함하는 것이 바람직하다. 0.01 wt% 미만인 경우 색재현율 상승 효과가 없고, 5wt%를 초과하는 경우 휘도 저하 문제가 발생된다. 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.
본 발명의 또 다른 실시예에 따른 고휘도 필름(100)은 보다 선명한 색재현율을 얻기 위하여 특정 파장 대역을 흡수하는 흡수 염료(dyestuff) 1종 이상을 고분자 매트릭스와 함께 교반기에 넣어 고르게 분산시켜 제조한 흡수 염료층(170)을 더 포함할 수 있다. High brightness film 100 according to another embodiment of the present invention 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.
상기 제조된 흡수 염료층(170)을 Mayer Bar로 기재 필름 및 형광체 코팅층 중 적어도 어느 하나의 일면에 형성할 수 있다. 도 4 와 같이 기재 필름(110)의 한 면 및 형광체 코팅층(140)의 한 면 중 적어도 한면에 일정 두께로 흡수 염료를 도포하여 코팅한 후 무전극 램프를 이용해 경화시켜 흡수 염료층(170)을 형성한다. 구체적으로 흡수 염료층(170)은 도 4의 (a) 내지 (c) 각각에서 흡수 염료층(170)으로 표시된 적어도 하나의 층에 형성될 수 있다. 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.
본 발명의 흡수 염료층(170)에 사용되는 상기 고분자 매트릭스는 단관능 우레탄아크릴레이트 올리고머, 단관능 모노머 등이 있으며, 광개시제, 레벨링제, 소포제 등을 첨가할 수 있다. 상기 광 개시제로는 IG184, IG907, TPO, CP4가 있으며, 이중 바람직한 광 개시제는 IG 184, TPO 이다.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.
본 발명의 흡수 염료층(170)에 포함되는 흡수 염료는 히드록시 벤조트리아졸(hydroxy -benzotriazole)계, 로다민(rhodamine, RH)계, 스쿠아린 (squarine, SQ)계, 시아닌(cyanine, CY)계 및 테트라아자포르피린(Tetra aza porphyrin, TAP )계 염료 중에서 적어도 어느 하나 일 수 있다. 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.
상기 히드록시 벤조트리아졸(hydroxy -benzotriazole)계 염료는 4-Hydroxy-1H-benzotriazole, 2-(2-Hydroxy-5-methylphenyl)benzotriazole 등 인 것이 바람직하다. The hydroxy benzotriazole-based dye is preferably 4-Hydroxy-1H-benzotriazole, 2- (2-Hydroxy-5-methylphenyl) benzotriazole, or the like.
상기 로다민(rhodamine, RH)계 염료는 Rhodamine, Rhodamine 6G 등 인 것이 바람직하다. The rhodamine (rhodamine, RH) -based dye is preferably Rhodamine, Rhodamine 6G and the like.
상기 스쿠아린 (squarine, SQ)계 염료는 2,4-Bis[4-(N,N-dibenzylamino)-2,6-dihydroxyphenyl]squaraine 등 인 것이 바람직하다. The squaraine (Squarine, SQ) -based dye is preferably 2,4-Bis [4- (N, N-dibenzylamino) -2,6-dihydroxyphenyl] squaraine.
상기 시아닌(cyanine, CY)계 염료는 Phthalocyanine 등 인 것이 바람직하다. The cyanine (Cyanine, CY) -based dye is preferably Phthalocyanine and the like.
또한, 싱기 흡수 염료는 380 ~ 430 nm, 480 ~ 510nm 및 560 ~ 600nm 중 적어도 어느 하나의 파장대역의 광을 흡수하는 염료인 것이 바람직하다. In addition, 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.
이 때, 바람직한 흡수 염료층(170)의 두께는 0.01 ~ 20 ㎛ 이다. 상기 흡수 염료층의 두께가 0.01 ㎛ 미만인 경우 색재현율 상승효과가 미흡하고, 20 ㎛ 초과의 경우 휘도 저하가 발생된다. At this time, the thickness of the preferable absorbing dye layer 170 is 0.01-20 탆. When the thickness of the absorbing dye layer is less than 0.01 μm, the effect of synergistic color reproduction is insufficient, and when the thickness of the absorbing dye layer is greater than 20 μm, luminance decreases.
상기 흡수 염료층(170)은 염료를 0.01 내지 5wt% 포함하는 것이 바람직하다. 0.01 wt% 미만인 경우 색재현율 향상 효과가 없고, 5wt%를 초과하는 경우 휘도가 저하된다. 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.
흡수 염료 종류별로 흡수염료 함량 및 흡수 염료층의 코팅 두께에 따른 휘도 및 색재현율을 하기 표 11 내지 16에 나타내었다. 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.
Figure PCTKR2017013144-appb-T000006
Figure PCTKR2017013144-appb-T000006
Figure PCTKR2017013144-appb-T000007
Figure PCTKR2017013144-appb-T000007
Figure PCTKR2017013144-appb-T000008
Figure PCTKR2017013144-appb-T000008
Figure PCTKR2017013144-appb-T000009
Figure PCTKR2017013144-appb-T000009
Figure PCTKR2017013144-appb-T000010
Figure PCTKR2017013144-appb-T000010
Figure PCTKR2017013144-appb-T000011
Figure PCTKR2017013144-appb-T000011
상기 표 11 내지 16의 휘도 Data는 QD Ref.(450nit)와 대비하여 "%"로 환산한 data이다. The luminance data of Tables 11 to 16 are data converted into "%" as compared with QD Ref. (450nit).
상기 표 11 내지 표 16은 모두 동일하게 YAG계 형광체 : LuAG계 형광체의 혼합 비율을 20wt% : 2wt% 로 하였고, 형광체 코팅층(140)의 두께를 50 ㎛ 로 제막하고, 흡수 염료층(170)의 두께를 0.1 ㎛로 고정하고, 흡수 염료층에 각 흡수 염료가 0.1wt% 포함되도록 고정하여 제조한 고휘도 필름(100)을 사용하여 측정하였다. In Tables 11 to 16, 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 μm, and the absorption dye layer 170 The thickness was fixed to 0.1 μm and measured using a high brightness film 100 prepared by fixing each absorbing dye to 0.1 wt% in the absorbing dye layer.
상기 흡수 염료층(170)은 기재필름(110) 또는 형광체 코팅층(140)의 일면에 연속으로 형성되지 않고, 상기 형광체 코팅층의 윗층에 프리즘 시트(210)를 적층하고, 그 위에 형성됨으로써 프리즘 시트를 사이에 두고 불연속적으로 배치되어 LCD의 휘도를 향상시킬 수도 있다. 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.
Figure PCTKR2017013144-appb-T000012
Figure PCTKR2017013144-appb-T000012
상기 표 17과 같이 프리즘 시트(210)의 상단부에 흡수 염료층(170)이 있는 경우, 프리즘 시트의 하단부에 흡수 염료층이 형성되는 경우보다 색재현율은 부족하지만 휘도가 매우 우수하고, 기존 SUHD TV 보다도 휘도가 우수한 효과가 있다. As shown in Table 17, when 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.
본 발명의 또 다른 실시예에 따른 고휘도 필름(100)은 보다 선명한 색재현율을 얻기 위하여 특정 파장 대역을 흡수하는 흡수 염료 1종을 형광체 코팅층(140)의 내부에 분산시켜 형성할 수 있다. The high brightness film 100 according to another embodiment of the present invention 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.
도 5와 같이 본 발명의 고휘도 필름(100)은 기재필름(110)의 일면에 형광체 코팅층(140)을 형성하고, 상기 형광체 코팅층(140) 내부에 흡수 염료(180)가 분산되어 있는 형태일 수 있다. As shown in FIG. 5, 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.
이 때, 상기 형광체 코팅층(140)의 내부에는 흡수염료(180)와 함께 도 5의 (a)에 도시된 바와 같이 YAG계 형광체가 분산되거나, 도 5의 (b)에 도시된 바와 같이 LuAG계 형광체가 분산되거나, 도 5의 (c)에 도시된 바와 같이 YAG계 형광체 및 LuAG계 형광체의 혼합 형광체가 분산되어 있다. At this time, 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.
본 발명의 형광체 코팅층(140)에 분산되는 흡수 염료(180)는 히드록시 벤조트리아졸(hydroxy -benzotriazole)계, 로다민(rhodamine, RH)계, 스쿠아린 (squarine, SQ)계, 시아닌(cyanine, CY)계 및 테트라아자포르피린(Tetra aza porphyrin, TAP )계 염료 중에서 적어도 어느 하나를 포함할 수 있다. 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.
또한, 본 발명의 흡수 염료(180)는 380 ~ 430 nm, 480 ~ 510nm 및 560 ~ 600nm 중 적어도 어느 하나의 파장대역의 광을 흡수하는 염료인 것이 바람직하다. In addition, 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.
상기 형광체 코팅층(140)은 흡수 염료(180)를 0.01 내지 5wt% 포함하는 것이 바람직하다. 0.01 wt% 미만인 경우 색재현율 상승 효과가 없고, 5wt%를 초과하는 경우 휘도 저하 문제가 발생된다. 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.
본 발명의 또 다른 실시예에 따른 고휘도 필름(100)은 도 6과 같이 형광체 코팅층이 코팅되지 않은 기재 필름(110)의 일면에 PMMA 입자 또는 PMMA 입자와 대전방지제를 포함하는 백코팅(Back coating)층(200)을 더 포함할 수 있다. 상기 백코팅층(200)에 포함된 입자에 의해 광학필름 이면에 요철을 부여해 다른 광학시트와의 블로킹을 방지하여 작업성을 향상시키고, 공정상 마찰로 인해 발생하는 정전기를 방지하는 효과가 있다. High brightness film 100 according to another embodiment of the present invention 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.
백코팅층에 사용되는 코팅 조액은 우레탄 아크릴레이트 올리고머, 단관능 모노머, 광개시제, 레벨링제, 분산제 및 PMMA 입자 등으로 이루어 진다.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.
상기 PMMA 입자는 전체 백코팅층에 대해 0.1 내지 5 wt% 함유하는 것이 바람직하다. 0.1wt% 미만인 경우 광학필름의 이면에 충분한 요철을 형성하지 못하고, 5wt% 초과인 경우 높은 헤이즈에 의한 투과광 손실이 발생하게 되므로 PMMA 입자의 함량을 조절하여 백코팅층의 헤이즈를 1 내지 20%로 조절하는 것이 바람직하다. 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.
또한, 상기 백코팅층(200)에는 필요에 따라 대전 방지제(Anti-static)를 첨가제로 추가할 수 있다. 상기 대전 방지제를 첨가함에 따라 표면 저항 조절이 가능하며, 대전 방지제는 백코팅층 전체 대비 0.01 내지 3wt% 포함되는 것이 바람직하다. 대전방지제의 함량이 0.01 wt% 미만인 경우 정전기 방지를 위한 표면 저항이 부족하고, 3wt% 초과인 경우는 필요 이상의 과량을 첨가하는 결과를 낳게 되는바, 대전 방지제를 0.01 내지 3wt% 첨가하여 표면 저항이 1010~1012 Ohm/□ 범위가 되도록 조절하는 것이 바람직하다. 표면 저항이 1010~1012 Ohm/□ 인 경우, 필름의 동적 상태에서의 장해방지가 가능하고, 대전 후 대전현상이 즉시 감쇠하는 효과가 있기 때문이다.In addition, an antistatic agent (Anti-static) 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. When 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. When 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.
본 발명의 백코팅층(200)은 bar coating, slot-die coating 등의 백코팅 방식을 사용할 수 있다. The back coating layer 200 of the present invention may use a back coating method such as bar coating and slot-die coating.
상기 백코팅시 백코팅층(200)의 두께는 1 내지 10㎛ 가 바람직하다. 두께가 1 ㎛ 미만인 경우 광학필름의 이면에 충분한 요철이 형성되지 않아 블로킹 방지가 어렵고, 10 ㎛ 초과인 경우 높은 헤이즈(haze)에 의한 투과광 손실 문제가 발생한다. In the back coating, the thickness of the back coating layer 200 is preferably 1 to 10 μm. If the thickness is less than 1 μm, 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 μm, the problem of transmission light loss due to high haze occurs.
본 발명의 또 다른 실시예에 따른 고휘도 필름(100)은 도 7과 같이 기재필름(110) 및 형광체 코팅층(140) 중 적어도 하나의 외면에 불소계 폴리올을 주쇄로 가지는 우레탄 아크릴레이트 올리고머 및 중공나노실리카를 포함하는 저굴절층(190)을 포함할 수 있다. High brightness film 100 according to another embodiment of the present invention 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.
상기 저굴절층(190)은 휘도를 추가적으로 향상시키기 위한 것으로 도 7 (a)와 같이 형광체 코팅층(140)의 상부 또는 도 7 (b)와 같이 형광체 코팅층(140)의 상부 와 기재필름(110)의 하부 모두에 형성될 수 있다. 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.
저굴절층(190)의 형성을 위한 코팅 조액은 우레탄 아크릴레이트 올리고머, 다관능 모노머, 단관능 모노머, 광개시제, 레벨링제, 분산제 및 중공나노실리카를 포함할 수 있다.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.
이 경우, 우레탄 아크릴레이트 올리고머는 다음 [화학식 1]과 같은 구조를 가진다.In this case, the urethane acrylate oligomer has the structure shown in the following [Formula 1].
[화학식 1][Formula 1]
Figure PCTKR2017013144-appb-I000001
Figure PCTKR2017013144-appb-I000001
x, y, z 및 n은 0 내지 50 사이의 정수이다. x, y, z and n are integers between 0 and 50.
상기 우레탄 아크릴레이트 올리고머는 불소계 폴리올을 주쇄로 가지며, 저굴절층(190)에 대해 10 내지 20wt% 포함된다. 불소계 폴리올의 함량이 10wt% 미만이면 저굴절층의 굴절률이 높아져 광손실이 발생하고, 20wt%를 초과하면 모노머의 함량이 줄어들어 가교 밀도가 떨어지므로 표면 경도와 같은 물리적 특성을 확보하기 어렵기 때문이다. 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. .
또한, 다관능 모노머와 단관능 모노머는 PETA(Pentaerythritol triacrylate)와 ACMO(Acryloyl morpholine)로 이루어질 수 있으며, 저굴절층에 대해 20 내지 30wt%의 비율로 포함된다. 아울러, 광개시제, 레벨링제, 분산제는 저굴절층에 대해 1 내지 5wt% 포함될 수 있다.In addition, 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. In addition, the photoinitiator, leveling agent, dispersant may be included 1 to 5wt% based on the low refractive layer.
한편, 중공나노실리카는 일례로 일본 일휘촉매사의 중공나노실리카를 이용할 수 있으며, 저굴절층(190)에 대해 30 내지 70wt% 포함되는 것이 바람직하다. 왜냐하면, 중공나노실리카의 함량이 30wt% 미만이면 반사율이 2.5% 이상 높아져 투과광 손실이 발생하고, 70% 초과이면 중공나노실리카 입자의 분산 문제가 발생하여 외관이 고르지 못하게 되기 때문이다.On the other hand, 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.
본 발명에서 저굴절층(190)의 코팅은 bar coating, slot-die coating, Micro Gravure coating 등의 방식을 사용할 수 있고, 저굴절층(190)의 두께는 70 내지 120 nm인 것이 바람직하다. 저굴절층(190)의 두께가 70nm 미만이거나 120nm 초과이면 반사율이 높아져 투과광 손실에 의한 휘도 저하 현상이 발생할 수 있다.In the present invention, 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.
또한, 저굴절층(190)의 굴절율은 1.32 내지 1.42인 것이 바람직하고, 1.34 내지 1.38인 것이 휘도 향상에 더욱 바람직하다.In addition, it is preferable that 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.
이상으로 본 발명에 따른 고휘도 필름 및 그 제조방법에 대해 설명하였다. 이하에서는 본 발명의 실시예에 대해 설명한다. The high brightness film and its manufacturing method of the present invention have been described above. Hereinafter, embodiments of the present invention will be described.
실시예Example 1 One
교반기가 부착된 반응기에 우레탄 (메타)아크릴레이트(한국, 엔티스사 Ebecryl 1290) 400g(40wt%)을 투입하고, 반응성 모노머 희석제인 이소보닐 아크릴레이트 400g(40wt%)과 2-히드록시에틸 아크릴레이트 50g(5wt%)을 투입한 후 레벨링제인 BYK사의 BYK307 10g (1wt%), 형광체 분산제인 BASF사의 FA-4420 10g(1wt%), 소포제인 BYK사의 BYK085 10g(1wt%)을 차례대로 투입한 다음 광개시제인 BASF사의 Irgacure 184 20g(2wt%)을 첨가하고, YAG 형광체 100g(10wt%)을 첨가하여 상온에서 30분 동안 400rpm으로 교반함으로써 점도 1,000cps의 투명한 액체 조성물을 얻었다. 이후, 제조된 코팅액을 PET필름의 일면에 Bar Coater로 50㎛ 두께로 코팅한 다음 무전극 램프를 이용하여 약 5초 동안 자외선을 조사하였다. 이 경우, 조사된 자외선의 광량은 1000mj 이하로 하였다. 마지막으로, 제조된 형광체 코팅 PET 필름의 상부에 일본 JSR사 저굴절 코팅액 TU2359를 Slot Die Coater를 이용하여 100nm 두께로 단면 및 양면 코팅을 실시한 다음, 무전극 램프를 이용하여 약 5초 동안 자외선을 조사하였다. 이 경우, 조사된 자외선의 광량은 1000mJ 이하로 하였다.400 g (40 wt%) of urethane (meth) acrylate (Ebecryl 1290, Entis Co., Ltd., Korea) was added to a reactor equipped with a stirrer, and 400 g (40 wt%) of isobornyl acrylate, a reactive monomer diluent, and 2-hydroxyethyl acrylate 50g (5wt%) was added, followed by 10g (1wt%) of BYK, a leveling agent, 10g (1wt%) of FA-4420 from BASF, a dispersant, and 10g (1wt%) of BYK085, an antifoaming agent. 20 g (2 wt%) of Irgacure 184 of BASF, a photoinitiator, was added, and 100 g (10 wt%) of YAG phosphor was added, followed by stirring at 400 rpm for 30 minutes at room temperature to obtain a transparent liquid composition having a viscosity of 1,000 cps. Thereafter, the prepared coating solution was coated on a surface of a PET film with a bar coater at a thickness of 50 μm, and then irradiated with ultraviolet light for about 5 seconds using an electrodeless lamp. In this case, the amount of irradiated ultraviolet light was 1000 mj or less. Lastly, 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.
실시예Example 2 2
교반기가 부착된 반응기에 우레탄 (메타)아크릴레이트(한국, 엔티스사 Ebecryl 1290) 400g(40wt%)을 투입하고, 반응성 모노머 희석제인 이소보닐 아크릴레이트 400g(40wt%)과 2-히드록시에틸 아크릴레이트 50g(5wt%)를 투입한 후 레벨링제인 BYK사의 BYK307 10g(1wt%), 형광체 분산제인 BASF사의 FA-4420 10g(1wt%), 소포제인 BYK사의 BYK085 10g(1wt%)을 차례대로 투입한 다음 광개시제인 BASF사의 Irgacure 184 20g(2wt%)을 첨가하고, YAG 형광체 200g(20wt%)을 첨가하여 상온에서 30분 동안 400rpm으로 교반함으로써 점도 1,000cps의 투명한 액체 조성물을 얻었다. 이후, 제조된 코팅액을 PET필름의 일면에 Bar Coater로 50㎛ 두께로 코팅한 다음 무전극 램프를 이용하여 약 5초 동안 자외선을 조사하였다. 이 경우, 조사된 자외선의 광량은 1000mj이하로 하였다. 마지막으로, 제조된 형광체 코팅 PET 필름의 상부에 일본 JSR사 저굴절 코팅액 TU2359를 Slot Die Coater를 이용하여 100nm 두께로 단면 및 양면 코팅을 실시한 다음, 무전극 램프를 이용하여 약 5초 동안 자외선을 조사하였다. 이 경우, 조사된 자외선의 광량은 1000mJ 이하로 하였다.400 g (40 wt%) of urethane (meth) acrylate (Ebecryl 1290, Entis Co., Ltd., Korea) was added to a reactor equipped with a stirrer, and 400 g (40 wt%) of isobornyl acrylate, a reactive monomer diluent, and 2-hydroxyethyl acrylate After adding 50g (5wt%), 10K (1wt%) of BYK, a leveling agent, 10g (1wt%) of FA-4420 from BASF, a phosphor dispersant, and 10g (1wt%) of BYK085, an antifoaming agent, BYK085 20 g (2 wt%) of Irgacure 184 of BASF, a photoinitiator, was added, and 200 g (20 wt%) of YAG phosphor was added and stirred at 400 rpm for 30 minutes at room temperature to obtain a transparent liquid composition having a viscosity of 1,000 cps. Thereafter, the prepared coating solution was coated on a surface of a PET film with a bar coater at a thickness of 50 μm, and then irradiated with ultraviolet light for about 5 seconds using an electrodeless lamp. In this case, the amount of irradiated ultraviolet light was 1000 mj or less. Lastly, 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.
실시예Example 3 3
교반기가 부착된 반응기에 우레탄 (메타)아크릴레이트(한국, 엔티스사 Ebecryl 1290) 400g(40wt%)을 투입하고, 반응성 모노머 희석제인 이소보닐 아크릴레이트 400g(40wt%)과 2-히드록시에틸 아크릴레이트 50g(5wt%)을 투입한 후 레벨링제인 BYK사의 BYK307 10g (1wt%), 형광체 분산제인 BASF사의 FA-4420 10g(1wt%), 소포제인 BYK사의 BYK085 10g(1wt%)을 차례대로 투입한 다음 광개시제인 BASF사의 Irgacure 184 20g(2wt%)을 첨가하고, YAG 형광체 300g(30wt%)을 첨가하여 상온에서 30분 동안 400rpm으로 교반함으로써 점도 1,000cps의 투명한 액체 조성물을 얻었다. 이후, 제조된 코팅액을 PET필름의 일면에 Bar Coater로 50㎛ 두께로 코팅한 다음 무전극 램프를 이용하여 약 5초 동안 자외선을 조사하였다. 이 경우, 조사된 자외선의 광량은 1000mj이하로 하였다. 마지막으로, 제조된 형광체 코팅 PET 필름의 상부에 일본 JSR사 저굴절 코팅액 TU2359를 Slot Die Coater를 이용하여 100nm 두께로 단면 및 양면 코팅을 실시한 다음, 무전극 램프를 이용하여 약 5초 동안 자외선을 조사하였다. 이 경우, 조사된 자외선의 광량은 1000mJ 이하로 하였다.400 g (40 wt%) of urethane (meth) acrylate (Ebecryl 1290, Entis Co., Ltd., Korea) was added to a reactor equipped with a stirrer, and 400 g (40 wt%) of isobornyl acrylate, a reactive monomer diluent, and 2-hydroxyethyl acrylate 50g (5wt%) was added, followed by 10g (1wt%) of BYK, a leveling agent, 10g (1wt%) of FA-4420 from BASF, a dispersant, and 10g (1wt%) of BYK085, an antifoaming agent. 20 g (2 wt%) of Irgacure 184 of BASF, a photoinitiator, was added, and 300 g (30 wt%) of YAG phosphor was added thereto, followed by stirring at 400 rpm for 30 minutes at room temperature to obtain a transparent liquid composition having a viscosity of 1,000 cps. Thereafter, the prepared coating solution was coated on a surface of a PET film with a bar coater at a thickness of 50 μm, and then irradiated with ultraviolet light for about 5 seconds using an electrodeless lamp. In this case, the amount of irradiated ultraviolet light was 1000 mj or less. Lastly, 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.
비교예Comparative example 1 One
저굴절층을 코팅하지 않은 것을 제외하고는 실시예 1과 동일하게 고휘도 필름을 제조하였다.A high brightness film was prepared in the same manner as in Example 1 except that the low refractive layer was not coated.
비교예Comparative example 2 2
저굴절층을 코팅하지 않은 것을 제외하고는 실시예 3과 동일하게 고휘도 필름을 제조하였다.A high brightness film was prepared in the same manner as in Example 3 except that the low refractive layer was not coated.
실험예Experimental Example
실시예와 비교예에 따라 제조된 고휘도 필름을 A4 사이즈로 재단하여 LCD를 제작한 후 휘도 측정 장치(일본 Topcon 사 BM-7 FAST 색차 휘도계)를 통해 고휘도 필름의 정면 휘도 및 색재현율을 측정하였으며, 그 결과를 하기의 표 18에 나타내었다. 이 경우, LCD는 반사판과, 광원(Blue LED)과, 고휘도 필름(HBF)과, 프리즘 및 액정표시패널을 순차적으로 배치하여 구성하였다. 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. In this case, 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.
구분division 실시예 1Example 1 실시예 2Example 2 실시예 3Example 3 비교예 1Comparative Example 1 비교예 2Comparative Example 2
저굴절층 코팅Low refractive layer coating 단면section 양면both sides 단면section 양면both sides 단면section 양면both sides -- --
색재현율(%)Color reproduction rate (%) 81.381.3 81.381.3 82.682.6 82.682.6 82.282.2 82.282.2 81.381.3 82.682.6
휘도(nit)Luminance (nit) 441441 452452 492492 504504 523523 536536 430430 480480
본 발명은 상기 고휘도 필름(100) 및 다른 여러 장의 필름을 하나의 시트 형태로 점착하여 액정표시장치용 복합시트(300)를 형성할 수 있다. 구체적으로 고휘도 필름(100)과 광학 필름을 접착제로 라미네이션하여 한 장의 복합시트로 제작하여 LCD에 적용이 가능하다. According to the present invention, 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. Specifically, 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.
본 발명에서 상기 광학 필름은 프리즘 시트, DBEF 및 시야각 보완시트 중에서 적어도 하나 이상 선택하여 사용할 수 있다. In the present invention, the optical film may be used by selecting at least one of a prism sheet, a DBEF, and a viewing angle complementary sheet.
본 발명에서 프리즘 시트(210)는 POP(Prism On Prism, 2매 복합필름) 혹은 수직, 수평 프리즘 시트 각각을 적층하여 사용하는 것이 바람직하다.In the present invention, 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.
본 발명에서 시야각 보완시트는 렌즈(lens)필름(240), MOP(Micro lens On Prism, 프리즘 한 층 위에 확산 기능을 할 수 있는 렌즈 필름이 적층된 복합필름)(250), 확산 시트(260) 중 어느 하나인 것이 바람직하다.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.
상기 접착제는 투명접착제(OCA, Optical Clear Adhesive)를 사용하는 것이 바람직하며, direct bonding(full lamination) 또는 air gap bonding 방식으로 접착할 수 있다. 특히, direct bonding 방식은 air gap bonding 방식에 비해 수율은 낮지만 광학 특성이 우수해 시인성은 높고 전력 소모는 적은 장점이 있다. The adhesive is preferably an optical clear adhesive (OCA), and may be bonded by direct bonding (full lamination) or air gap bonding. In particular, 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.
상기 라미네이션은 도 10과 같은 공정에 의해 이루어진다. 제1 공급롤러(R1)를 통해 광학필름(F1)이 공급되고, 제2 공급롤러(R2)를 통해 고휘도 필름(F2)이 공급된다. 상기 광학필름(F1)은 접착제 도포 롤러(R3)를 통과하며 광학필름의 적어도 한 면에 접착제(A)가 도포된 후 합지롤러(R4)를 거쳐 고휘도 필름(F2)과 합지되어 복합시트(F3)가 완성된다. 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.
한편, 본 발명은 광학필름이 2가지 이상 선택되어 사용되는 경우에는 고휘도 필름과 1가지 광학필름을 상기 공정에 의해 먼저 합지한 후, 나머지 1가지 광학필름을 상기 공정을 반복하여 순차적으로 합지 시키는 과정을 거쳐 복합시트를 형성한다. In the present invention, when two or more optical films are selected and used, a process of first laminating a high brightness film and one optical film by the above process and then laminating the remaining one optical film sequentially by repeating the above process The composite sheet is formed through.
본 발명의 복합시트(300)는 고휘도 필름과 광학필름 사이에 접착제를 도포하여 형성할 수 있다. The composite sheet 300 of the present invention may be formed by applying an adhesive between the high brightness film and the optical film.
구체적으로, 광학필름 중 DBEF만 사용되는 경우 고휘도 필름(100)과 DBEF(220) 사이에 접착제를 도포하여 합지한 복합시트(300)를 형성할 수 있다. 또한, 광학필름 중 프리즘 시트만 사용되는 경우 고휘도 필름(100)과 프리즘 시트(210) 사이에 접착제를 도포하여 합지한 복합시트(300)를 형성할 수 있다. 또한, 광학필름 중 프리즘 시트 및 DBEF가 사용되는 경우에는 고휘도 필름(100)과 프리즘 시트(210) 사이, 상기 프리즘 시트(210)와 DBEF(220) 사이에 각각 접착제를 도포하여 도 8과 같은 복합시트(300)를 형성할 수 있다. 즉, 고휘도 필름(100)과 프리즘시트(210)를 라미네이션 공정에 의해 접착제로 합지한 후, DBEF(220)를 점착하는 라미네이션 공정을 반복하여 도 8과 같은 고휘도필름(100), 프리즘시트(210) 및 DBEF(220) 순서로 구성된 복합시트(300)를 형성한다. In detail, when only DBEF is used in the optical film, the composite sheet 300 may be formed by applying an adhesive between the high brightness film 100 and the DBEF 220. In addition, when only the prism sheet of the optical film is used, the composite sheet 300 may be formed by applying an adhesive between the high brightness film 100 and the prism sheet 210. In addition, when the prism sheet and DBEF are used among the optical film, 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. That is, after laminating the high brightness film 100 and the prism sheet 210 with an adhesive by a lamination process, 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. ) And DBEF 220 to form a composite sheet (300).
본 발명에서 DBEF와 고휘도 필름을 함께 사용하는 경우 형광체 혼합 비율에 다른 휘도 및 색재현성에 관하여 하기 표 19 내지 21에 나타내었다. In the present invention, when using the DBEF and the high brightness film together, the luminance and color reproducibility of the phosphor mixture ratio are shown in Tables 19 to 21 below.
표 19는 'DBEF와 HBF를 함께 사용하는 경우 바람직한 형광체 혼합 비율에 따른 휘도 및 색재현성'을 나타내고, 표 20 및 표 21은 'DBEF와 HBF를 함께 사용하는 경우 바람직한 형광체 혼합 비율 이외의 혼합비율에 따른 휘도 및 색재현성'을 나타낸다.Table 19 shows the luminance and color reproducibility according to the preferred phosphor mixing ratio when using DBEF and HBF together, and 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 '.
구분 division YAG 10YAG 10 YAG 20 YAG 20 YAG 40YAG 40
LuAG 5 LuAG 5 LuAG 10 LuAG 10 LuAG 20 LuAG 20 LuAG 5 LuAG 5 LuAG 10 LuAG 10 LuAG 20 LuAG 20 LuAG 5 LuAG 5 LuAG 10 LuAG 10
휘도 [nit]Luminance [nit] 650650 700700 750750 720720 760760 800800 750750 780780
색재현성[%]Color reproducibility [%] 81.881.8 82.482.4 82.682.6 82.382.3 82.482.4 82.682.6 8282 81.581.5
구분division Ref. DBEFRef. DBEF Ref. DBEFRef. DBEF YAG : LuAGYAG: LuAG YAG 50YAG 50
(LED TV)(LED TV) (QD TV)(QD TV) 함량 wt% content wt% LuAG 5LuAG 5 LuAG 10 LuAG 10 LuAG 20 LuAG 20
휘도 [nit] Luminance [nit] 430430 450450 휘도 [nit] Luminance [ nit ] 710710 730730 740740
색재현성[%]Color reproducibility [%] 81.681.6 100100 색재현성[ % ]　 Color reproducibility [ % ] 72.372.3 71.371.3 71.371.3
구분division Ref. DBEFRef. DBEF Ref. DBEFRef. DBEF YAG : LuAGYAG: LuAG YAG 5YAG 5
(LED TV)(LED TV) (QD TV)(QD TV) 함량 wt% content wt% LuAG 5LuAG 5 LuAG 10 LuAG 10 LuAG 20 LuAG 20
휘도 [nit] Luminance [nit] 430430 450450 휘도 [nit] Luminance [ nit ] 480480 490490 530530
색재현성[%]Color reproducibility [%] 81.681.6 100100 색재현성[ % ]　 Color reproducibility [ % ] 79.379.3 79.379.3 78.378.3
본 발명의 또 다른 실시예에 따른 복합시트(300)는 광학필름 중 시야각 보완시트를 사용하여 LCD의 시야각에 따른 휘도 향상 구현이 가능하다. 특히 특정 각도에서 휘도가 저하되는 문제를 개선할 수 있다. 이는 상기 프리즘 시트(210)를 통하여 집광된 빛은 시야각 보완시트에서 다시 확산됨으로써 종래 일반 LCD TV 대비 높은 휘도 및 우수한 시야각별 휘도 향상 구현이 가능한 것이다. 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.
구체적으로, 고휘도 필름(100)과 시야각 보완시트 사이에 접착제를 도포하여 복합시트를 형성할 수 있다. 또한, 광학필름 중 프리즘 시트(210) 및 시야각 보완시트가 사용되는 경우에는 고휘도 필름(100)과 프리즘 시트(210) 사이, 상기 프리즘 시트와(210) 시야각 보완시트 사이에 각각 접착제를 도포하여 복합시트를 형성할 수 있다. Specifically, a composite sheet may be formed by applying an adhesive between the high brightness film 100 and the viewing angle complementary sheet. In addition, when the prism sheet 210 and the viewing angle complementary sheet of the optical film are used, 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.
도 9에는 본 발명의 고휘도 필름(100)과 시야각 보완시트를 포함하는 복합시트의 구체적인 예를 도시하는 도면이다. 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.
도 9의 (a)는 시야각 보완시트로 렌즈필름(240)을 사용한 복합시트를 나타낸다. 이 경우, 고휘도 필름(100), 프리즘 시트(210) 및 렌즈필름(240)이 순서대로 적층하여 점착하는 것이 바람직하다. 9A illustrates a composite sheet using the lens film 240 as a viewing angle complementary sheet. In this case, it is preferable that the high brightness film 100, the prism sheet 210, and the lens film 240 are laminated in order and adhered.
도 9의 (b)는 시야각 보완시트로 MOP(250)을 사용한 복합시트를 나타낸다. 상기 MOP는 프리즘의 한 층 위에 확산 기능을 할 수 있는 렌즈필름이 적층된 형태이므로, 별도의 프리즘 시트를 함께 사용하지 않고, 고휘도 필름(100) 및 MOP(250)를 순서대로 적층하여 점착하는 것이 바람직하다. 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.
도 9의 (c)는 시야각 보완시트로 확산시트(260)를 사용한 복합시트를 나타낸다. 이 경우, 고휘도 필름(100), 프리즘 시트(210) 및 확산시트(260)를 순서대로 적층하여 점착하는 것이 바람직하다. 9C shows a composite sheet using the diffusion sheet 260 as a viewing angle complementary sheet. In this case, it is preferable that the high brightness film 100, the prism sheet 210 and the diffusion sheet 260 are laminated in order and adhered.
다음에는 본 발명에 따른 고휘도 필름(100)을 포함하는 LCD 구조에 대해 설명한다. 본 발명에 따른 LCD 구조는 액정 패널과 그 저면에 백라이트 유닛을 포함할 수 있고, 상기 백라이트 유닛은 반사판, 도광판, 고휘도 필름(100), 프리즘 시트(210)를 포함할 수 있다. Next, an LCD structure including the high brightness film 100 according to the present invention will be described. 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.
본 발명의 LCD 구조를 세분화한 개략도는 도 11의 (a) 내지 (d)에 나타나 있다. 도 11의 경우, 프리즘 시트(210)를 수평프리즘시트(22,32)와 수직프리즘시트(23,33)로 세분화하여 나타내었다. A schematic diagram of the LCD structure of the present invention is shown in Figs. 11A to 11D. In FIG. 11, the prism sheet 210 is divided into horizontal prism sheets 22 and 32 and vertical prism sheets 23 and 33.
구체적으로, 본 발명에 따른 액정표시장치는 액정패널(10)과 백라이트유닛(20)(30)으로 구성된다. 본 발명의 일 실시예에 따른 백라이트유닛(20)은 도 11의 (a)(b)에 도시된 바와 같이, 반사판(25), 도광판(24), 수직프리즘시트(23), 수평프리즘시트(22) 그리고 상확산판(21)이 차례로 적층되어 이루어지되, 수평프리즘시트(22)와 상확산판(21) 사이 또는 도광판(24)과 수직프리즘시트(23) 사이에 상기 고휘도 필름(100)이 적층될 수 있다. 도 11의 (a)(b)에 도시된 실시예는 도광판(24)의 양측 측면에 광원이 설치되어 LED 에지형 백라이트를 구성할 수 있다.Specifically, the liquid crystal display device according to the present invention includes a liquid crystal panel 10 and a backlight unit 20, 30. The backlight unit 20 according to the exemplary embodiment of the present invention 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. 11A and 11B, light sources may be installed at both side surfaces of the light guide plate 24 to form an LED edge-type backlight.
또한 본 발명의 다른 실시예에 따른 백라이트유닛(30)은 도 11의 (c)(d)에 도시된 바와 같이, 확산판(34), 수직프리즘시트(33), 수평프리즘시트(32) 그리고 상확산판(31)이 차례로 적층되어 이루어지되, 수평프리즘시트(32)와 상확산판(31) 사이 또는 확산판(34)과 수직프리즘시트(33) 사이에 상기 고휘도 필름(100)이 적층될 수 있다. 도 11의 (c)(d)에 도시된 실시예는 확산판(34)의 하부에 광원이 설치되어 LED 직하형 백라이트를 구성할 수 있다.In addition, 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. Can be. In the embodiment shown in (c) (d) of FIG. 11, a light source may be installed under the diffusion plate 34 to form an LED direct backlight.
도 11의 (a)~(d)에 도시된 백라이트(20)(30)에는 청색 LED를 광원으로 적용함으로써 바람직하게 휘도를 향상시킬 수 있다.By applying a blue LED as a light source to the backlights 20 and 30 illustrated in FIGS. 11A to 11D, the luminance can be improved.
본 발명에 따른 LCD 구조는 상기 프리즘 시트 (210) 위에 DBEF(220)을 더 포함 할 수 있다. 도 12는 본 발명의 고휘도 필름(100) 및 DBEF(220)를 포함하는 LCD 구조의 일례를 나타낸다. 이는 저면으로부터 광원(410), 도광판(420), 고휘도 필름(100), 프리즘 시트(210), DBEF(220), 액정패널(430)이 순서대로 적층되는 구조이다. 이러한 구조는 휘도 향상 및 색재현율 향상 면에서 바람직하다. 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.
상기 LCD 구조는 고휘도 필름(100), 프리즘 시트(210) 및 DBEF(220)이 점착된 복합시트(300)를 포함하는 것도 가능하다. 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.
하기 표 22 내지 25에는 본 발명의 고휘도 필름(100)이 프리즘 시트(210)와 사용되는 경우, 고휘도 필름(100)이 프리즘 시트(210) 및 DBEF(220)와 조합되어 LCD 구조에 적용되는 각각의 경우에 휘도와 색재현율을 실험한 결과를 나타내었다. 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.
하기 표 22는 'HBF의 적용위치별 휘도 확인 결과'를 나타낸다. Table 22 below shows the 'luminosity check results for each application position of the HBF'.
Figure PCTKR2017013144-appb-T000013
Figure PCTKR2017013144-appb-T000013
상기 표 22에서 보는 바와 같이 LCD 구조에 본 발명의 고휘도 필름(HBF)(100)을 적용하는 경우, 고휘도 필름(100) 위에 프리즘 시트(210)가 있는 경우에 휘도 향상 효과가 극대화 되는 것을 확인할 수 있다. 따라서 고휘도 필름(100)의 위층에 프리즘 시트(210)가 있는 것이 바람직하다. 또한 도광판 바로 위에서 고휘도 필름(100)을 적용하는 경우에 휘도 향상 효과가 가장 좋은 것을 알 수 있다. 따라서 본 발명의 고휘도 필름(100)은 도광판(420)과 프리즘 시트(210) 사이에서 사용하는 것이 가장 바람직하다.As shown in Table 22, 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.
하기 표 23은 'DBEF와 프리즘 시트 유무에 따른 휘도 경향성'을 나타낸다.Table 23 shows 'luminance tendency with and without DBEF and prism sheet'.
Figure PCTKR2017013144-appb-T000014
Figure PCTKR2017013144-appb-T000014
상기 표 23에서는 본 발명의 고휘도 필름(100)과 함께, 프리즘 시트 (210) 및 DBEF(220)를 사용하는 경우, 프리즘 시트(210)만 사용하는 경우, DBEF 와 프리즘을 모두 제거하는 각각의 경우에 있어서 휘도 변화를 나타내었다. In Table 23, when the prism sheet 210 and the DBEF 220 are used together with the high brightness film 100 of the present invention, when only the prism sheet 210 is used, each case of removing both the DBEF and the prism The change in luminance is shown in Figs.
고휘도 필름(100)은 DBEF(220)와 프리즘 시트(210) 모두 없이 사용했을 때에는 휘도가 낮지만, DBEF 필름 대신 프리즘 시트(210)와 함께 사용하는 경우 일반적인 WHITE LED 에 DBEF 필름을 사용하는 경우보다도 휘도가 높고, DBEF 필름(220) 및 프리즘 시트(210)와 모두와 함께 사용되는 경우에는 784.7 nit의 정면 휘도를 나타내 8K의 UHD 급 또는 그 이상의 휘도를 나타내는 것이 확인되었다. 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. When the brightness was high and used together with both the DBEF film 220 and the prism sheet 210, it was confirmed that the front brightness of 784.7 nit was shown to display a UHD level of 8K or higher.
하기 표 24는 'HBF 휘도 향상 필름 적용 구조의 최적화'를 나타낸다. Table 24 below shows 'optimization of the HBF brightness enhancement film application structure'.
Figure PCTKR2017013144-appb-T000015
Figure PCTKR2017013144-appb-T000015
상기 표 24을 살펴보면 종래 WHITE LED TV나 QD TV보다도 본 발명의 고휘도 필름(100) 및 프리즘 시트(210)을 포함하는 경우 휘도가 향상되었고, 휘도 향상 및 정면 색좌 허용 범위를 만족시키는 면에서 가장 바람직한 결과가 나타났다. 나아가 상기 프리즘 시트(210) 위에 DBEF(220)를 더 포함하는 경우에는 정면 휘도 값이 가장 높게 나타났다. Referring to Table 24, when 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.
하기 표 25는 '휘도 및 색재현성, 정면색좌, RGB 색좌 비교' 표 이다. Table 25 is a table 'luminance and color reproducibility, front color coordinates, RGB color coordinates comparison'.
Figure PCTKR2017013144-appb-T000016
Figure PCTKR2017013144-appb-T000016
상기 표 25를 살펴보면 본 발명의 고휘도 필름(100)을 프리즘 시트(210)와 함께 적용하는 LCD 구조의 경우 휘도가 가장 높은 것을 알 수 있으며, 종래 WHITE LED 직하형에 DBEF 필름을 적용한 경우보다 색재현성도 높은 것을 확인 할 수 있다. Looking at the Table 25 it can be seen that 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.
본 발명의 또 다른 구현예로 본 발명의 LCD 구조는 액정 패널과 그 저면에 백라이트 유닛을 포함할 수 있고, 상기 백라이트 유닛은 반사판, 도광판, 고휘도 필름(100), 프리즘 시트(210) 순서대로 구성되어 있으며, 상기 프리즘 시트(210) 위에 시야각 보완시트를 더 포함할 수 있다. In another embodiment of the present invention, 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. In addition, the prism sheet 210 may further include a viewing angle complementary sheet.
도 13은 본 발명에 따른 고휘도 필름(100) 및 시야각 보완시트를 포함하는 LCD 구조의 일례를 나타낸다. 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.
도 13의 (a)는 시야각 보완시트로 렌즈필름(240)이 사용된 경우를 나타내며, 저면으로부터 광원(410), 도광판(420), 고휘도 필름(100), 프리즘 시트(210), 렌즈필름(240), 액정패널(430)이 순서대로 적층되는 구조이다.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.
도 14를 살펴보면, 고휘도 필름(100) 및 프리즘 시트(210)만 적용한 LCD 의 경우 -30, +30 이상의 각도에서 휘도가 감소하는 것을 알 수 있다. 그러나 렌즈필름(240)을 추가로 적용하는 경우 상기 특정 각도의 시야각 범위에서 휘도 저하 문제가 개선되는 것을 확인할 수 있다. Referring to FIG. 14, in the case of the LCD to which only the high brightness film 100 and the prism sheet 210 are applied, the luminance is decreased at angles of −30 and +30 or more. However, when 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.
특히 렌즈 필름(240)을 고휘도 필름(100)과 함께 사용하는 경우에는 고휘도 필름만 사용하는 경우에 비하여 휘도가 상승하는 효과가 나타난다. 이는 하기 표 26에 '렌즈 필름이 함께 사용되는 경우, 고휘도 필름에 사용된 YAG계 및 LuAG계 형광체 함량에 따른 LCD 휘도와 색재현율'을 나타내었다. Particularly, when the lens film 240 is 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'.
구분 division YAG 10YAG 10 YAG 20 YAG 20 YAG 40YAG 40
LuAG 5 LuAG 5 LuAG 10 LuAG 10 LuAG 20 LuAG 20 LuAG 5 LuAG 5 LuAG 10 LuAG 10 LuAG 20 LuAG 20 LuAG 5 LuAG 5 LuAG 10 LuAG 10
휘도 [nit]Luminance [nit] 550550 600600 650650 620620 660660 700700 650650 680680
색재현성[%]Color reproducibility [%] 81.881.8 82.482.4 82.682.6 82.382.3 82.482.4 82.682.6 8282 81.581.5
도 13의 (b)는 시야각 보완시트로 MOP(250)이 사용된 경우를 나타내며, 저면으로부터 광원(410), 도광판(420), 고휘도 필름(100), MOP(250), 액정패널(430)이 순서대로 적층되는 구조이다. 이 경우, MOP(250)는 프리즘 위에 렌즈 필름이 적층되는 구조이므로 별도의 프리즘 시트를 더 사용하지 않아도 휘도 향상 및 시야각 보완 효과가 있다.  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. In this case, 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.
도 15를 살펴보면, 고휘도 필름(100) 및 프리즘 시트(210)만 적용한 LCD 의 경우 -30, +30 이상의 각도에서 휘도가 감소하는 것을 알 수 있다. 그러나 MOP(250)을 추가로 적용하는 경우 상기 특정 각도의 시야각 범위에서 휘도 저하 문제가 개선되는 것을 확인할 수 있다. Referring to FIG. 15, in the case of the LCD to which only the high brightness film 100 and the prism sheet 210 are applied, the luminance is decreased at angles of −30 and +30 or more. However, when the MOP 250 is further applied, the luminance deterioration problem may be improved in the viewing angle range of the specific angle.
도 13의 (c)는 시야각 보완시트로 확산시트(260)가 사용된 경우를 나타내며, 저면으로부터 광원(410), 도광판(420), 고휘도 필름(100), 프리즘 시트(210), 확산시트(260), 액정패널(430)이 순서대로 적층되는 구조이다. 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.
도 16을 살펴보면, 고휘도 필름(100) 및 프리즘 시트(210)만 적용한 LCD 의 경우 -30, +30 이상의 각도에서 휘도가 감소하는 것을 알 수 있다. 그러나 확산시트(260)를 추가로 적용하는 경우 상기 특정 각도의 시야각 범위에서 휘도 저하 문제가 개선되는 것을 확인할 수 있다. Referring to FIG. 16, in the case of the LCD to which only the high brightness film 100 and the prism sheet 210 are applied, the luminance is decreased at angles of −30 and +30 or more. However, when 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.
[[ 제조예Production Example ]]
본 발명의 고휘도 필름(100)을 구성하는 형광체 코팅층, 안료층, 염료층, 저굴절층 등의 제조예를 나타내었다. 본 발명의 제조예는 예시를 나타낸 것일 뿐 본 발명을 제한하고자 하는 것은 아니다. 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.
형광체 코팅층 Phosphor coating layer 제조예Production Example
교반기가 부착된 반응기에 우레탄 (메타)아크릴레이트(한국, 엔티스사 Ebecryl 1290) 400g(40wt%)을 투입하고, 반응성 모노머 희석제인 이소보닐 아크릴레이트 400g(40wt%)과 2-히드록시에틸 아크릴레이트 50g(5wt%)을 투입한 후 레벨링제인 BYK사의 BYK307 10g (1wt%), 형광체 분산제인 BASF사의 FA-4420 10g(1wt%), 소포제인 BYK사의 BYK085 10g(1wt%)을 차례대로 투입한 다음 광개시제인 BASF사의 Irgacure 184 20g(2wt%)을 첨가하고, YAG 형광체 100g(10wt%)을 첨가하여 상온에서 30분 동안 400rpm으로 교반함으로써 점도 1,000cps의 투명한 액체 조성물을 얻었다. 이후, 제조된 코팅액을 PET필름의 일면에 Bar Coater로 50㎛ 두께로 코팅한 다음 무전극 램프를 이용하여 약 5초 동안 자외선을 조사하였다. 이 경우, 조사된 자외선의 광량은 1000mj 이하로 하였다. 마지막으로, 제조된 형광체 코팅 PET 필름의 상부에 일본 JSR사 저굴절 코팅액 TU2359를 Slot Die Coater를 이용하여 100nm 두께로 단면 및 양면 코팅을 실시한 다음, 무전극 램프를 이용하여 약 5초 동안 자외선을 조사하였다. 이 경우, 조사된 자외선의 광량은 1000mJ 이하로 하였다.400 g (40 wt%) of urethane (meth) acrylate (Ebecryl 1290, Entis Co., Ltd., Korea) was added to a reactor equipped with a stirrer, and 400 g (40 wt%) of isobornyl acrylate, a reactive monomer diluent, and 2-hydroxyethyl acrylate 50g (5wt%) was added, followed by 10g (1wt%) of BYK, a leveling agent, 10g (1wt%) of FA-4420 from BASF, a dispersant, and 10g (1wt%) of BYK085, an antifoaming agent. 20 g (2 wt%) of Irgacure 184 of BASF, a photoinitiator, was added, and 100 g (10 wt%) of YAG phosphor was added, followed by stirring at 400 rpm for 30 minutes at room temperature to obtain a transparent liquid composition having a viscosity of 1,000 cps. Thereafter, the prepared coating solution was coated on a surface of a PET film with a bar coater at a thickness of 50 μm, and then irradiated with ultraviolet light for about 5 seconds using an electrodeless lamp. In this case, the amount of irradiated ultraviolet light was 1000 mj or less. Lastly, 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.
흡수 absorption 안료층Pigment layer 제조예Production Example
안료(용성 아조 안료(Carmine 6B), 불용성 아조 안료(Toluidine Red), NaPhthol AS계(Fast Red FGR), Monoazo Yellow계 (Monoazo Yellow G) , Disazo Yellow계(Disazo Yellow GG) 안료) 0.01~5wt%를 고분자 매트릭스에 넣어서 60분 교반 시킨다. 이 경우, 고분자 매트릭스(Matrix)로는 단관능 우레탄아크릴레이트 올리고머, 단관능 모노머를 사용하였다. 이후, 안료와 매트릭스 혼합물에 광개시제를 첨가한다. 광개시제로는 IG184, IG907, TPO, CP4 중에서 선택하여 1~5wt% 첨가할 수 있으나, 여기서는 IG 184와 TPO를 5:5의 비율로 5wt% 첨가하였다. 마지막으로, 제조된 코팅액을 Mayer Bar로 형광체 코팅층의 상부 또는 PET 필름의 타면에 도포한 후 무전극 램프를 이용하여 약 5초간 조사한다. 이때 조사된 광량은 500mj 이하가 바람직하다.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%. Here, 5 wt% of IG 184 and TPO are added at a ratio of 5: 5. Finally, 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.
흡수 안료가 분산된 형광체 코팅층 Phosphor coating layer in which absorbing pigment is dispersed 제조예Production Example
YAG계 형광체 (Y3A15012:Ce3+) 10~40 wt% 또는 LuAG계 형광체(Lu3Al5O12:Ce3+) 10~40 wt% 또는 혼합형광체로 YAG계 형광체 10~40wt% 및 LuAG계 형광체 1~20wt% 중 선택된 하나의 형광체에 안료(용성 아조 안료(Carmine 6B), 불용성 아조 안료(Toluidine Red), NaPhthol AS계(Fast Red FGR), Monoazo Yellow계 (Monoazo Yellow G) , Disazo Yellow계(Disazo Yellow GG) 안료) 0.01~5wt%를 혼합하여 고분자 매트릭스에 넣어서 60분 교반 시킨다. 고분자 매트릭스(Matrix)는 단관능 우레탄아크릴레이트 올리고머, 단관능 모노머를 사용하였다. 교반이 끝난 형광체와 매트릭스 혼합 물에 광개시제는 2종류를 첨가한다. 광 개시제로는 IG 184, TPO 2종을 각각 5:5로 혼합하여 5 wt%을 첨가하면 코팅액이 제조된다. 이렇게 제조된 코팅액을 Mayer Bar로 PET 필름의 한쪽면에 도포 후 무전극 램프를 이용하여 약 5초간 조사한다. 이때 조사된 광량은 1000mj이하가 바람직하다.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. As the polymer matrix, a monofunctional urethane acrylate oligomer and a monofunctional monomer were used. Two kinds of photoinitiators are added to the stirred phosphor and matrix mixture. As 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.
흡수 absorption 염료층Dye layer 제조예Production Example
염료(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)를 0.01~ 5wt%를 고분자 매트릭스에 넣어서 60분 교반 시킨다. 고분자 매트릭스(Matrix)는 단관능 우레탄아크릴레이트 올리고머, 단관능 모노머를 사용하였다. 교반이 끝난 형광체와 매트릭스 혼합 물에 광개시제는 2종류를 첨가한다. 광 개시제로는 IG 184, TPO 2종을 각각 5:5로 혼합하여 5 wt%을 첨가하면 코팅액이 제조된다. 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. As the polymer matrix, a monofunctional urethane acrylate oligomer and a monofunctional monomer were used. Two kinds of photoinitiators are added to the stirred phosphor and matrix mixture. As a photoinitiator, a coating liquid is prepared by mixing IG 184 and TPO two at 5: 5, respectively, and adding 5 wt%.
이렇게 제조된 코팅액을 Mayer Bar로 상기 형광체 코팅층의 상부 또는 반대쪽(PET와 맞닿은 면)에 일정 두께로 도포 후 무전극 램프를 이용하여 약 5초간 조사한다. 이때 조사된 광량은 500mj이하가 바람직하다.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.
흡수 염료가 분산된 형광체 코팅층 Phosphor coating layer in which absorbing dye is dispersed 제조예Production Example
YAG계 형광체 (Y3A15012:Ce3+) 10~40 wt% 또는 LuAG계 형광체(Lu3Al5O12:Ce3+) 10~40 wt% 또는 혼합형광체로 YAG계 형광체 10~40wt% 및 LuAG계 형광체 1~20wt% 중 선택된 하나의 형광체에 염료(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% 를 혼합하여 고분자 매트릭스 에 넣어서 60분 교반 시킨다. 이경우, 고분자 매트릭스로는 Nc chem 사의 NSP 53을 사용하였다. 교반이 끝난 형광체와 매트릭스 혼합 물에 광개시제는 2종류를 첨가한다. 광 개시제로는 IG 184, TPO 2종을 각각 5:5로 혼합하여 5 wt%을 첨가하면 코팅액이 제조된다. 이렇게 제조된 코팅액을 Mayer Bar로 PET 필름의 한쪽면에 도포 후 무전극 램프를 이용하여 약 5초간 조사한다. 이때 조사된 광량은 1000mj이하가 바람직하다.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. In this case, NSP 53 of Nc chem was used as the polymer matrix. Two kinds of photoinitiators are added to the stirred phosphor and matrix mixture. As 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.
저굴절층Low refractive layer 제조예Production Example
상기 제조된 형광체 코팅층의 상부에 일본 JSR사 저굴절 코팅액 TU2359를 Slot Die Coater를 이용하여 100nm 두께로 단면 및 양면 코팅을 실시한 다음, 무전극 램프를 이용하여 약 5초 동안 자외선을 조사하였다. 이 경우, 조사된 자외선의 광량은 1000mJ 이하로 하였다.On the upper part of the prepared phosphor coating layer, 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. In this case, the light quantity of irradiated ultraviolet rays was 1000 mJ or less.
[LCD 휘도 측정 방법][LCD brightness measurement method]
본 발명의 고휘도 필름의 휘도 및 색재현성은 액정표시 장치와 Topcon사 BM-7FAST 색채휘도계를 이용하여 평가한다. 실제 사용된 액정표시장치는 UN55JS8500F(삼성, 55인치 Blue-BLU)이며, 기본 구성은 다음과 같다. 엣지형 blue-LED 광원, 도광판, POP필름(Prism on Prism), 액정 패널 순으로 이루어져있다. 이 장치에서 본 발명의 고휘도 필름(HBF)을 도광판과 POP필름 사이에 위치하여 휘도 및 색재현성을 평가한다. 평가 시, BM-7FAST 장치와 액정표시장치(UN55JS8500F)와의 간격은 50cm로 일정하게 유지한다.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. In this device, 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. In the evaluation, the distance between the BM-7FAST device and the liquid crystal display device (UN55JS8500F) is kept constant at 50 cm.
또한, 본 발명은 상기 액정표시장치의 POP필름 위에 DBEF를 더 포함하고 동일한 방법으로 휘도 및 색재현성을 평가한다. In addition, 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.
또한, 본 발명은 상기 액정표시장치의 POP필름 위에 시야각 보완시트를 더 포함하고 동일한 방법으로 휘도 및 색재현성을 평가한다. In addition, 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.
[부호의 설명][Description of the code]
10 : 액정패널, 11 : 상편광판,10: liquid crystal panel, 11: upper polarizing plate,
12 : 제1점착층, 13 : 액정셀,12: first adhesive layer, 13: liquid crystal cell,
14 : 제2점착층, 15 : 하편광판,14, the second adhesive layer, 15: the lower polarizing plate,
20 : 백라이트유닛, 21 : 상확산판,20: backlight unit, 21: phase diffusion plate,
22 : 수평프리즘시트, 23 : 수직프리즘시트,22: horizontal prism sheet, 23: vertical prism sheet,
24 : 도광판, 25 : 반사판,24: light guide plate, 25: reflector plate,
30 : 백라이트유닛, 31 : 상확산판,30: backlight unit, 31: phase diffusion plate,
32 : 수평프리즘시트, 33 : 수직프리즘시트,32: horizontal prism sheet, 33: vertical prism sheet,
34 : 확산판, 34: diffusion plate,
100 : 고휘도 필름 110 : 기재필름, 100: high brightness film 110: base film,
120 : YAG계 형광체, 130 : LuAG계 형광체. 120: YAG-based phosphor, 130: LuAG-based phosphor.
140 : 형광체 코팅층, 150 : 흡수 안료층140: phosphor coating layer, 150: absorbing pigment layer
160 : 흡수 안료 170 : 흡수 염료층160: absorbing pigment 170: absorbing dye layer
180 : 흡수 염료 190 : 저굴절층180: absorbing dye 190: low refractive layer
200 : 백코팅층 210 : 프리즘 시트200: back coating layer 210: prism sheet
220 : DBEF 240 : 렌즈필름 220: DBEF 240: lens film
250 : MOP 260 : 확산시트 250: MOP 260: Diffusion Sheet
300 : 복합시트 R1 : 제1 공급 롤러 300: composite sheet R1: first feed roller
R2 : 제2 공급 롤러 R3 : 접착제 도포 롤러 R2: 2nd supply roller R3: adhesive application roller
R4 : 합지 롤러 R5 : 권취 롤러 R4: lamination roller R5: winding roller
r : 가이드 롤러 A : 접착제 r: guide roller A: adhesive
F1 : 광학필름 F2 : 고휘도 필름(HBF) F1: Optical Film F2: High Brightness Film (HBF)
F3 : 복합 시트 F3: Composite Sheet

Claims (40)

  1. 기재 필름의 일면에 형광체 코팅층을 코팅하고, 상기 형광체 코팅층은 고분자 매트릭스에 YAG계 형광체만 포함하거나, 고분자 매트릭스에 LuAG계 형광체만 포함하거나, 고분자 매트릭스에 YAG계 형광체 및 LuAG계 형광체 혼합형광체를 포함하는 것을 특징으로 하는 액정표시장치용 고휘도 필름.A phosphor coating layer is coated on one surface of the base film, and the phosphor coating layer includes only YAG-based phosphor in the polymer matrix, only LuAG-based phosphor in the polymer matrix, or YAG-based phosphor and LuAG-based phosphor mixed phosphor in the polymer matrix. A high brightness film for a liquid crystal display device, characterized in that.
  2. 제 1 항에 있어서, YAG계 형광체는 Y3A15012: Ce3 + (YAG:Ce), Tb3A15012:Ce3+(TAG:Ce), Ca3(Sc,Mg)2Si3O12:Ce3 +, Y3Mg2AlSi2O12:Ce3 + 중에서 적어도 어느 하나이고, LuAG계 형광체는 Lu3Al5O12:Ce3 +, Tb3Al5O12:Ce3 +, Lu2CaMg2Si3O12:Ce3 + 중에서 적어도 어느 하나인 액정표시장치용 고휘도 필름.The method of claim 1, wherein 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 + It is at least one, 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 A high brightness film for a liquid crystal display device, which is at least one of Ce 3 + .
  3. 제 1 항에 있어서, YAG계 형광체만 포함시 코팅층 전체 대비 10 내지 40wt%, LuAG계 형광체만 포함시 코팅층 전체 대비 10 내지 40wt%, YAG계 형광체 및 LuAG계 형광체 혼합형광체 포함시 코팅층 전체 대비 YAG계 형광체는 10 내지 40 wt%, LuAG계 형광체는 1 내지 20wt% 포함하는 액정표시장치용 고휘도 필름.According to claim 1, 10 to 40wt% compared to the entire coating layer when containing only the YAG-based phosphor, 10 to 40wt% compared to the entire coating layer when including only the LuAG-based phosphor, YAG-based compared to the entire coating layer when containing YAG-based phosphor and LuAG-based phosphor mixed phosphor 10 to 40 wt% of a phosphor, and 1 to 20wt% of a LuAG-based phosphor.
  4. 제 1 항에 있어서, 상기 형광체 코팅층의 두께는 10 내지 100 ㎛ 인 액정표시장치용 고휘도 필름.The high brightness film for a liquid crystal display device of claim 1, wherein the phosphor coating layer has a thickness of 10 to 100 μm.
  5. 제 1 항에 있어서, 기재 필름 및 형광체 코팅층 중 적어도 어느 하나의 일면에 흡수 안료를 포함하는 흡수 안료층을 코팅하는 액정표시장치용 고휘도 필름.The high brightness film for a liquid crystal display device according to claim 1, wherein the absorbing pigment layer containing the absorbing pigment is coated on at least one surface of the base film and the phosphor coating layer.
  6. 제 1 항에 있어서, 형광체 코팅층의 내부에 흡수 안료가 분산되는 액정표시장치용 고휘도 필름.The high brightness film for a liquid crystal display device according to claim 1, wherein the absorbing pigment is dispersed in the phosphor coating layer.
  7. 제 5 항에 있어서, 흡수 안료는 380~430nm, 480~510nm 및 560~600nm 중 적어도 어느 하나의 파장대역의 광을 흡수하는 용성 아조 안료 (Carmine 6B), 불용성 아조 안료(Toluidine Red), NaPhthol AS계(Fast Red FGR), Monoazo Yellow계 (Monoazo Yellow G) 및 Disazo Yellow계( Disazo Yellow GG) 안료 중에서 적어도 어느 하나를 포함하는 액정표시장치용 고휘도 필름.The method of claim 5, wherein the absorbing pigment is a soluble azo pigment (Carmine 6B), insoluble azo pigment (Toluidine Red), NaPhthol AS, which absorbs light in at least one of the wavelength range of 380 ~ 430nm, 480 ~ 510nm and 560 ~ 600nm A high brightness film for a liquid crystal display device comprising at least one of a fast red FGR, a monoazo yellow g and a disazo yellow gg pigment.
  8. 제 6 항에 있어서, 흡수 안료는 380~430nm, 480~510nm 및 560~600nm 중 적어도 어느 하나의 파장대역의 광을 흡수하는 용성 아조 안료 (Carmine 6B), 불용성 아조 안료(Toluidine Red), NaPhthol AS계(Fast Red FGR), Monoazo Yellow계 (Monoazo Yellow G) 및 Disazo Yellow계( Disazo Yellow GG) 안료 중에서 적어도 어느 하나를 포함하는 액정표시장치용 고휘도 필름.The method of claim 6, wherein the absorbing pigment is a soluble azo pigment (Carmine 6B), insoluble azo pigment (Toluidine Red), NaPhthol AS, which absorbs light in at least one of the wavelength range of 380 ~ 430nm, 480 ~ 510nm and 560 ~ 600nm A high brightness film for a liquid crystal display device comprising at least one of a fast red FGR, a monoazo yellow g and a disazo yellow gg pigment.
  9. 제 5 항에 있어서, 흡수 안료는 흡수 안료층에 0.01 내지 5wt% 포함되는 액정표시장치용 고휘도 필름.The high brightness film for a liquid crystal display device according to claim 5, wherein the absorbing pigment is contained in an absorbing pigment layer in an amount of 0.01 to 5 wt%.
  10. 제 6 항에 있어서, 흡수 안료는 형광체 코팅층에 0.01 내지 5wt% 포함되는 액정표시장치용 고휘도 필름.The high brightness film of claim 6, wherein the absorbing pigment is contained in an amount of about 0.01 wt% to about 5 wt% in the phosphor coating layer.
  11. 제 5 항에 있어서, 상기 흡수 안료층의 두께는 0.1 내지 15 ㎛인 액정표시장치용 고휘도 필름.The high brightness film for a liquid crystal display device according to claim 5, wherein the absorption pigment layer has a thickness of 0.1 to 15 μm.
  12. 제 1 항에 있어서, 기재 필름 및 형광체 코팅층 중 적어도 어느 하나의 일면에 흡수 염료를 포함하는 흡수 염료층을 코팅하는 액정표시장치용 고휘도 필름.The high brightness film for a liquid crystal display device according to claim 1, wherein the absorbing dye layer including the absorbing dye is coated on at least one surface of the base film and the phosphor coating layer.
  13. 제 1 항에 있어서, 형광체 코팅층의 내부에 흡수 염료가 분산되는 액정표시장치용 고휘도 필름The high brightness film for a liquid crystal display device according to claim 1, wherein an absorbing dye is dispersed in the phosphor coating layer.
  14. 제 12 항에 있어서, 흡수 염료는 380~430nm, 480~510nm 및 560~600nm 중 적어도 어느 하나의 파장대역의 광을 흡수하는 히드록시 벤조트리아졸(hydroxy -benzotriazole)계, 로다민(rhodamine, RH)계, 스쿠아린 (squarine, SQ)계, 시아닌(cyanine, CY)계 및 테트라아자포르피린(Tetra aza porphyrin, TAP )계 염료 중에서 적어도 어느 하나를 포함하는 액정표시장치용 고휘도 필름.The method of claim 12, wherein the absorbing dye is a hydroxy benzotriazole-based, rhodamine (rhodamine, RH) that absorbs light in at least one of the wavelength range of 380 ~ 430nm, 480 ~ 510nm and 560 ~ 600nm A high brightness film for a liquid crystal display device comprising at least any one of a) -based, squalene (SQ) -based, cyanine (Cyan) -based, and tetra aza porphyrin (TAP) -based dyes.
  15. 제 13 항에 있어서, 흡수 염료는 380~430nm, 480~510nm 및 560~600nm 중 적어도 어느 하나의 파장대역의 광을 흡수하는 히드록시 벤조트리아졸(hydroxy -benzotriazole)계, 로다민(rhodamine, RH)계, 스쿠아린 (squarine, SQ)계, 시아닌(cyanine, CY)계 및 테트라아자포르피린(Tetra aza porphyrin, TAP )계 염료 중에서 적어도 어느 하나를 포함하는 액정표시장치용 고휘도 필름.The method of claim 13, wherein the absorbing dye is a hydroxy benzotriazole-based, rhodamine (rhodamine, RH) that absorbs light in at least one of the wavelength range of 380 ~ 430nm, 480 ~ 510nm and 560 ~ 600nm A high brightness film for a liquid crystal display device comprising at least any one of a) -based, squalene (SQ) -based, cyanine (Cyan) -based, and tetra aza porphyrin (TAP) -based dyes.
  16. 제 12 항에 있어서, 흡수 염료는 흡수 염료층에 0.01 내지 5wt% 포함되는 액정표시장치용 고휘도 필름.The high brightness film for a liquid crystal display device according to claim 12, wherein the absorbing dye is contained in an absorbing dye layer in an amount of 0.01 to 5 wt%.
  17. 제 13항에 있어서, 흡수 염료는 형광체 코팅층에 0.01 내지 5wt% 포함되는 액정표시장치용 고휘도 필름.The high brightness film of claim 13, wherein the absorbing dye is contained in an amount of about 0.01 wt% to about 5 wt% in the phosphor coating layer.
  18. 제 12 항에 있어서, 상기 흡수 염료층의 두께는 0.01 내지 20㎛ 인 액정표시장치용 고휘도 필름.The high brightness film for a liquid crystal display device according to claim 12, wherein the absorption dye layer has a thickness of 0.01 to 20 μm.
  19. 제 1 항에 있어서, 형광체 코팅층이 코팅되지 않은 기재 필름의 일면에 PMMA 입자 또는 PMMA 입자와 대전방지제를 포함하는 백코팅층을 더 포함하는 액정표시장치용 고휘도 필름.The high brightness film for a liquid crystal display device according to claim 1, further comprising a back coating layer containing PMMA particles or PMMA particles and an antistatic agent on one surface of the base film on which the phosphor coating layer is not coated.
  20. 제 19 항에 있어서, PMMA 입자는 백코팅층 대비 0.1 내지 5wt% 포함하는 액정표시장치용 고휘도 필름.The high brightness film for a liquid crystal display device of claim 19, wherein the PMMA particles comprise 0.1 to 5 wt% of the back coating layer.
  21. 제 19 항에 있어서, 대전방지제는 백코팅층 대비 0.01 내지 3wt% 포함하는 액정표시장치용 고휘도 필름.The high brightness film for a liquid crystal display device of claim 19, wherein the antistatic agent comprises 0.01 wt% to 3 wt% of the back coating layer.
  22. 제 19 항에 있어서, 백코팅층의 두께는 1 내지 10 ㎛ 인 액정표시장치용 고휘도 필름. The high brightness film for a liquid crystal display device according to claim 19, wherein the back coating layer has a thickness of 1 to 10 µm.
  23. 제 1 항에 있어서, 기재필름 및 형광체 코팅층 중 적어도 하나의 외면에 불소계 폴리올을 주쇄로 가지는 우레탄 아크릴레이트 올리고머 및 중공나노실리카를 포함하는 저굴절층이 형성되는 액정표시장치용 고휘도 필름.The high brightness film for a liquid crystal display device according to claim 1, wherein a low refractive index layer including a urethane acrylate oligomer having a fluorine-based polyol as a main chain and hollow nanosilica is formed on an outer surface of at least one of the base film and the phosphor coating layer.
  24. 제 23 항에 있어서, 우레탄 아크릴레이트 올리고머는 상기 저굴절층에 대해 10 내지 20wt% 포함되는 액정표시장치용 고휘도 필름.The high brightness film for a liquid crystal display device of claim 23, wherein the urethane acrylate oligomer is contained in an amount of 10 to 20 wt% based on the low refractive layer.
  25. 제 23 항에 있어서, 중공나노실리카는 상기 저굴절층에 대해 30 내지 70wt% 포함되는 액정표시장치용 고휘도 필름.The high brightness film of claim 23, wherein the hollow nanosilica is included in an amount of 30 wt% to 70 wt% with respect to the low refractive layer.
  26. 제 23 항에 있어서, 저굴절층의 두께는 70 내지 120 nm 인 액정표시장치용 고휘도 필름.The high brightness film for a liquid crystal display device according to claim 23, wherein the low refractive layer has a thickness of 70 to 120 nm.
  27. 제 23 항에 있어서, 저굴절층의 굴절율은 1.32 내지 1.42인 액정표시장치용 고휘도 필름.The high brightness film for a liquid crystal display device according to claim 23, wherein the low refractive index layer has a refractive index of 1.32 to 1.42.
  28. 제 1 항 내지 제 27 항 중의 어느 한 항 기재의 고휘도 필름 및 프리즘 시트를 접착제로 합지한 복합시트.The composite sheet which laminated | stacked the high brightness film and prism sheet of any one of Claims 1-27 with an adhesive agent.
  29. 제 1 항 내지 제 27 항 중 어느 한 항 기재의 고휘도 필름 및 DBEF를 접착제로 합지한 복합시트.The composite sheet which laminated | stacked the high brightness film and DBEF of any one of Claims 1-27 with an adhesive agent.
  30. 제 1 항 내지 제 27 항 중 어느 한 항 기재의 고휘도 필름, 프리즘 시트 및 DBEF를 순서대로 접착제로 합지한 복합시트. The composite sheet which laminated | stacked the high brightness film, the prism sheet, and DBEF of any one of Claims 1-27 with an adhesive in order.
  31. 제 1 항 내지 제 27 항 중 어느 한 항 기재의 고휘도 필름, 프리즘 시트 및 시야각 보완시트를 접착제로 합지한 복합시트.A composite sheet in which a high brightness film, a prism sheet, and a viewing angle complementary sheet according to any one of claims 1 to 27 are laminated with an adhesive.
  32. 제 31 항에 있어서, 시야각 보완시트는 렌즈필름, MOP 또는 확산시트인 복합시트.32. The composite sheet of claim 31, wherein the viewing angle complementary sheet is a lens film, a MOP or a diffusion sheet.
  33. 액정패널과 액정패널의 저면에 설치되는 백라이트 유닛을 포함하되, 상기 백라이트 유닛은 반사판, 도광판, 프리즘시트, 상확산판이 차례로 적층되고, 도광판의 양측에는 청색 LED가 설치되며, 제 1 항 내지 제 27 항 중 어느 한 항 기재의 고휘도 필름이 프리즘시트와 상확산판 사이 또는 도광판과 프리즘시트 사이에 적층되는 LCD 구조.A liquid crystal panel and a backlight unit installed on the bottom surface of the liquid crystal panel, the backlight unit is a reflecting plate, a light guide plate, a prism sheet, an image diffusion plate is sequentially stacked, blue LEDs are installed on both sides of the light guide plate, claim 1 to 27 An LCD structure in which the high brightness film according to any one of claims is laminated between a prism sheet and an image diffusion plate or between a light guide plate and a prism sheet.
  34. 액정패널과 액정패널의 저면에 설치되는 백라이트 유닛을 포함하되, 상기 백라이트 유닛은 확산판, 프리즘시트, 상확산판이 차례로 적층되고, 확산판의 하부에는 청색 LED가 설치되며, 제 1 항 내지 제 27 항 중 어느 한 항 기재의 고휘도 필름이 프리즘시트와 상확산판 사이 또는 확산판과 프리즘시트 사이에 적층되는 LCD 구조.A liquid crystal panel and a backlight unit installed on the bottom surface of the liquid crystal panel, the backlight unit is a diffusion plate, a prism sheet, an image diffusion plate is sequentially stacked, the blue LED is installed below the diffusion plate, claim 1 to 27 An LCD structure in which the high brightness film of any one of claims is laminated between a prism sheet and an image diffusion plate or between a diffusion plate and a prism sheet.
  35. 제 33 항에 있어서, 프리즘 시트 위에 DBEF를 더 포함하는 LCD 구조. 34. The LCD structure of claim 33 further comprising a DBEF over the prism sheet.
  36. 제 34 항에 있어서, 프리즘 시트 위에 DBEF를 더 포함하는 LCD 구조.35. The LCD structure of claim 34 further comprising a DBEF over the prism sheet.
  37. 제 33 항에 있어서, 프리즘 시트 위에 시야각 보완시트를 더 포함하는 LCD 구조.34. The LCD structure of claim 33 further comprising a viewing angle complementary sheet over the prism sheet.
  38. 제 34 항에 있어서, 프리즘 시트 위에 시야각 보완시트를 더 포함하는 LCD 구조.35. The LCD structure of claim 34 further comprising a viewing angle complementary sheet over the prism sheet.
  39. 제 37 항에 있어서, 시야각 보완시트는 렌즈필름, MOP 또는 확산시트인 LCD 구조.38. The LCD structure of claim 37 wherein the viewing angle complementary sheet is a lens film, a MOP or a diffusion sheet.
  40. 제 38 항에 있어서, 시야각 보완시트는 렌즈필름, MOP 또는 확산시트인 LCD 구조.The LCD structure according to claim 38, wherein the viewing angle complementary sheet is a lens film, a MOP or a diffusion sheet.
PCT/KR2017/013144 2016-11-18 2017-11-17 High brightness film for liquid crystal display, composite sheet, and lcd structure using same WO2018093211A1 (en)

Applications Claiming Priority (84)

Application Number Priority Date Filing Date Title
KR10-2016-0154538 2016-11-18
KR10-2016-0154548 2016-11-18
KR20160154491 2016-11-18
KR10-2016-0154503 2016-11-18
KR10-2016-0154481 2016-11-18
KR10-2016-0154528 2016-11-18
KR20160154529 2016-11-18
KR10-2016-0154506 2016-11-18
KR10-2016-0154501 2016-11-18
KR10-2016-0154530 2016-11-18
KR20160154494 2016-11-18
KR10-2016-0154487 2016-11-18
KR10-2016-0154491 2016-11-18
KR20160154534 2016-11-18
KR20160154528 2016-11-18
KR20160154506 2016-11-18
KR10-2016-0154534 2016-11-18
KR20160154538 2016-11-18
KR10-2016-0154512 2016-11-18
KR1020160154532A KR20180056525A (en) 2016-11-18 2016-11-18 Bright enhancing film using fluorescence
KR20160154530 2016-11-18
KR10-2016-0154542 2016-11-18
KR20160154481 2016-11-18
KR10-2016-0154515 2016-11-18
KR20160154542 2016-11-18
KR1020160154508A KR20180056512A (en) 2016-11-18 2016-11-18 Bright enhancing film using fluorescence
KR10-2016-0154532 2016-11-18
KR10-2016-0154522 2016-11-18
KR20160154503 2016-11-18
KR20160154501 2016-11-18
KR1020160154515A KR20180056516A (en) 2016-11-18 2016-11-18 Bright enhancing film using fluorescence
KR10-2016-0154529 2016-11-18
KR10-2016-0154489 2016-11-18
KR10-2016-0154494 2016-11-18
KR20160154512 2016-11-18
KR20160154548 2016-11-18
KR20160154487 2016-11-18
KR10-2016-0154508 2016-11-18
KR1020160154522A KR20180056521A (en) 2016-11-18 2016-11-18 Bright enhancing film using fluorescence
KR20160154489 2016-11-18
KR1020170150068A KR20180056547A (en) 2016-11-18 2017-11-11 Bright enhancing film and preparing method of the same
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KR1020170150093A KR101961040B1 (en) 2016-11-18 2017-11-11 Liquid Crystal Display device using optical sheet combination for bright enhancing and composite sheet for liquid crystal display
KR10-2017-0150072 2017-11-11
KR1020170150076A KR20180056555A (en) 2016-11-18 2017-11-11 Bright enhancing film and preparing method of the same
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KR1020170150089A KR102013498B1 (en) 2016-11-18 2017-11-11 Liquid Crystal Display device using high brightness film and composite sheet for liquid crystal display
KR1020170150087A KR20180056565A (en) 2016-11-18 2017-11-11 LCD structure
KR1020170150106A KR20180056584A (en) 2016-11-18 2017-11-11 LCD structure
KR1020170150091A KR20180056569A (en) 2016-11-18 2017-11-11 LCD structure
KR1020170150100A KR20180056578A (en) 2016-11-18 2017-11-11 Liquid Crystal Display Comprising Bright Enhancing Film
KR1020170150065A KR101961029B1 (en) 2016-11-18 2017-11-11 Bright enhancing film using phosphor
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KR1020170150080A KR20180056559A (en) 2016-11-18 2017-11-11 Liquid Crystal Display Comprising Bright Enhancing Film
KR1020170150103A KR102061942B1 (en) 2016-11-18 2017-11-11 LCD structure
KR10-2017-0150089 2017-11-11
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KR1020170150070A KR20180056549A (en) 2016-11-18 2017-11-11 Bright enhancing film and preparing method of the same
KR10-2017-0150080 2017-11-11
KR1020170150072A KR20180056551A (en) 2016-11-18 2017-11-11 Bright enhancing film and preparing method of the same
KR10-2017-0150065 2017-11-11
KR1020170150083A KR101961036B1 (en) 2016-11-18 2017-11-11 Liquid Crystal Display Comprising Bright Enhancing Film
KR10-2017-0150097 2017-11-11
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KR1020170150097A KR20180056575A (en) 2016-11-18 2017-11-11 Bright enhancing film and preparing method of the same
KR10-2017-0152676 2017-11-16
KR10-2017-0152666 2017-11-16
KR10-2017-0152672 2017-11-16
KR20170152676 2017-11-16
KR1020170152672A KR20190055880A (en) 2017-11-16 2017-11-16 LCD structure
KR1020170152666A KR20190055878A (en) 2017-11-16 2017-11-16 Bright enhancing film and preparing method of the same
KR1020170152674A KR20190055881A (en) 2017-11-16 2017-11-16 Bright enhancing film and preparing method of the same
KR10-2017-0152670 2017-11-16
KR10-2017-0152668 2017-11-16
KR1020170152670A KR20190055879A (en) 2017-11-16 2017-11-16 LCD structure
KR20170152668 2017-11-16
KR10-2017-0152674 2017-11-16

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KR20100135087A (en) * 2009-06-16 2010-12-24 제일모직주식회사 Optical film with anti-reflection and near infrared absorption
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KR20160041712A (en) * 2014-10-08 2016-04-18 에스케이씨하스디스플레이필름(유) Diffusion sheet comprising yellow phosphor
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KR20100135087A (en) * 2009-06-16 2010-12-24 제일모직주식회사 Optical film with anti-reflection and near infrared absorption
KR20110135097A (en) * 2010-06-10 2011-12-16 엘지디스플레이 주식회사 Liquid crystal display device module
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