WO2009101916A1 - カラーフィルタおよびこれを用いた液晶表示装置 - Google Patents

カラーフィルタおよびこれを用いた液晶表示装置 Download PDF

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Publication number
WO2009101916A1
WO2009101916A1 PCT/JP2009/052162 JP2009052162W WO2009101916A1 WO 2009101916 A1 WO2009101916 A1 WO 2009101916A1 JP 2009052162 W JP2009052162 W JP 2009052162W WO 2009101916 A1 WO2009101916 A1 WO 2009101916A1
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WIPO (PCT)
Prior art keywords
green
color filter
pigment
pixel
filter according
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PCT/JP2009/052162
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English (en)
French (fr)
Japanese (ja)
Inventor
Takashi Yamauchi
Hidesato Hagiwara
Atsuko Kamada
Yoshiko Ishimaru
Kenji Muneuchi
Noriko Asahi
Satoshi Ohkuma
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Toppan Printing Co., Ltd.
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Priority claimed from JP2008031413A external-priority patent/JP2009192662A/ja
Priority claimed from JP2008031415A external-priority patent/JP2009192664A/ja
Priority claimed from JP2008031412A external-priority patent/JP2009192661A/ja
Application filed by Toppan Printing Co., Ltd. filed Critical Toppan Printing Co., Ltd.
Priority to CN2009801052072A priority Critical patent/CN101952769A/zh
Publication of WO2009101916A1 publication Critical patent/WO2009101916A1/ja

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/201—Filters in the form of arrays
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/22—Absorbing filters
    • G02B5/223—Absorbing filters containing organic substances, e.g. dyes, inks or pigments
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133621—Illuminating devices providing coloured light

Definitions

  • the present invention relates to a color filter having a green pixel containing a brominated zinc phthalocyanine green pigment and a liquid crystal display device using the same.
  • liquid crystal display devices have been rapidly spread in many applications such as television image display devices, computer terminal display devices, mobile terminal liquid crystal display devices for mobile applications, and liquid crystal display devices for in-vehicle use. Competition in display image quality is intensifying.
  • high color reproducibility and high brightness are characteristics that depend on the backlight light source and color filter provided in the liquid crystal display device.
  • a cold cathode fluorescent tube (CCFL: Cold), which is a conventional light source, is used.
  • Cathode® Fluorescent® Lamp has a problem that the color purity is lowered due to the sub-peak of the emission spectrum curve of the phosphor.
  • a technique is employed in which LEDs of three colors of red, green, and blue (light emitting diodes) exhibiting emission spectrum characteristics having no sub-peak are used as a backlight.
  • the LED has advantages such as excellent response to the CCFL, excellent power consumption, low power consumption, and mercury-free environment.
  • C.I. which is a brominated copper phthalocyanine green pigment as a colorant for green pixels.
  • I. (Color Index) Pigment Green 36 is known to be used, but a high transmittance is not obtained, and a white LED device in which emission colors are mixed by combining red LED, green LED, and blue LED. In order to improve luminance even when used as a light source, a high transmittance is desired.
  • An object of the present invention is to provide a color filter capable of improving luminance while maintaining high color reproducibility of a liquid crystal display device when a white LED device is used as a backlight, and a liquid crystal display device using the color filter There is to do.
  • a color filter for use in a liquid crystal display device including a backlight that emits white light having at least a blue LED, and the color filter includes at least a red pixel, a green pixel, and a blue pixel.
  • a color filter is provided in which the green pixel contains a brominated zinc phthalocyanine green pigment.
  • the apparatus includes a backlight that emits white light having at least a blue LED, and at least a red pixel, a green pixel, and a blue pixel, and the green pixel contains a brominated zinc phthalicyanine green pigment.
  • a liquid crystal display device comprising a color filter.
  • the color filter according to the first embodiment of the present invention is used for a liquid crystal display device including a white LED device in which a red LED, a green LED, and a blue LED are combined as a backlight to mix emission colors.
  • a white LED device has emission characteristics as shown in FIG. 1, and the emission spectrum characteristics of an example of a cold cathode fluorescent tube (CCFL) used in the conventional liquid crystal display device shown in FIG. Is different.
  • CCFL cold cathode fluorescent tube
  • the light emission characteristics of the CCFL have sub-peaks near the blue / green boundary 490 nm and the red / green boundary 580 nm. Therefore, the liquid crystal display device using the CCFL as a backlight has color purity. descend.
  • the liquid crystal display device using the CCFL as a backlight has color purity. descend.
  • both methods cannot be realized unless the luminance is greatly reduced.
  • a white LED device in which a red LED, a green LED, and a blue LED are combined in the backlight to mix emission colors, and bromination is performed on the green pixel of the color filter.
  • Zinc phthalocyanine green pigments such as C.I. I.
  • Pigment Green 58 it was possible to improve luminance while maintaining high color reproducibility.
  • the color filter according to the second embodiment of the present invention is used in a liquid crystal display device including a white LED device in which a blue LED and a YAG phosphor are combined to mix emission colors as a backlight.
  • a white LED device in which a blue LED and a YAG phosphor are combined to mix emission colors as a backlight.
  • An example of this white LED device has emission characteristics as shown in FIG. 3, and the emission spectrum characteristics of an example of a cold cathode fluorescent tube (CCFL) used in the conventional liquid crystal display device shown in FIG. Is different.
  • CCFL cold cathode fluorescent tube
  • a white LED device in which a blue LED and a YAG phosphor are combined to mix emission colors is used for a backlight, and a brominated zinc phthalocyanine green pigment is used for a green pixel.
  • a brominated zinc phthalocyanine green pigment is used for a green pixel.
  • C.I. I. By providing a color filter containing Pigment Green 58, it was possible to improve luminance while maintaining high color reproducibility.
  • the color filter according to the third embodiment of the present invention is used in a liquid crystal display device including a white LED device in which a blue LED and a red / green light emitting phosphor are combined to mix emission colors as a backlight.
  • a white LED device in which a blue LED and a red / green light emitting phosphor are combined to mix emission colors as a backlight.
  • An example of this white LED device has a light emission characteristic as shown in FIG. 4. What is an emission spectrum characteristic of an example of a cold cathode fluorescent tube (CCFL) used in the conventional liquid crystal display device shown in FIG. Different.
  • CCFL cold cathode fluorescent tube
  • the CCFL having the light emission characteristics as shown in FIG. 2 has reduced color purity due to the presence of sub-peaks near the blue / green boundary 490 nm and the red / green boundary 580 nm. Although it is necessary to change or combine the spectral characteristics of the color filters with high purity phosphors, or to combine them, there is a problem that neither method can be realized unless the luminance is greatly reduced.
  • the light emission peak of the white LED device which combines the light emission color by combining the blue LED having the light emission characteristics as shown in FIG. It was possible to improve the property.
  • a white LED device in which a blue LED and a red / green light emitting phosphor are combined in a backlight and a luminescent color is mixed is used, and a brominated zinc phthalocyanine is used in a green pixel.
  • Green pigments such as C.I. I.
  • the green pixel has C.I. I. Pigment yellow 150 or C.I. I. Pigment Yellow 138 may be included.
  • brominated zinc phthalocyanine green pigment such as C.I. I. Pigment Green 58 has a transmittance of 490 nm to 630 nm and is a brominated copper phthalocyanine green pigment. I. Since it is higher than the pigment green 36 and the hue is yellowish, the blending ratio of the yellow pigment used for toning can be reduced. As a result, C.I. I. Compared with the case of using Pigment Green 36, it is possible to obtain a bright color filter with less turbidity and excellent color purity.
  • Green pixels are C.I. I. Pigment Green 58 and C.I. I.
  • the weight percentage ratio is [90 to 16]: [10 to 84] when used in the liquid crystal display device according to the first and second embodiments. [92 to 17]: [8 to 83] is desirable.
  • the green pixel is C.I. I. Pigment Green 58 and C.I. I.
  • the weight percentage ratio is [92 to 17]: [8 to 83] when used in the liquid crystal display device according to the first and second embodiments. [94 to 17]: [6 to 83] is desirable.
  • the color filter according to the first to third embodiments is a color filter including at least a color pixel, a green pixel, and a blue pixel on a transparent substrate, and each of these color pixels includes an organic pigment and a transparent resin as main components. It is a thing. In addition, yellow, magenta, cyan, orange, and the like arranged in the same plane can be applied to each color pixel.
  • the transparent substrate used for the color filter substrate is preferably one having a certain transmittance with respect to visible light, more preferably one having a transmittance of 80% or more.
  • it may be one used in a liquid crystal display device, and examples thereof include a plastic substrate such as PET and glass, but a glass substrate is usually used.
  • a material obtained by previously attaching a metal thin film such as chromium or a lattice pattern with a light shielding resin on the transparent substrate may be used.
  • each color pixel on the transparent substrate may be produced by any known method such as an inkjet method, a printing method, a photoresist method, or an etching method.
  • a transparent photosensitive photosensitive composition in which a pigment is dispersed in a transparent resin together with a photoinitiator and a polymerizable monomer is transparent.
  • a photoresist method is preferred in which a color filter is formed by repeating the process of forming a pixel of one color by forming a coating film on a substrate, pattern exposure to the coating film, and development for each color.
  • Preparation of the photosensitive coloring composition used for the formation of each color pixel follows, for example, the following method.
  • a pigment serving as a colorant is dispersed in a transparent resin, and then mixed with an appropriate solvent together with a photoinitiator and a polymerizable monomer.
  • There are various methods such as a mill base, three rolls, and a jet mill for dispersing the pigment as the colorant and the transparent resin, and the method is not particularly limited.
  • organic pigments that can be used in the photosensitive coloring composition used for forming each color pixel are shown by color index numbers.
  • red pigments examples include C.I. I. Pigment Red 254, 7, 9, 14, 41, 48: 1, 48: 2, 48: 3, 48: 4, 81: 1, 81: 2, 81: 3, 97, 122, 123, 146, 149, 168, 177, 178, 179, 180, 184, 185, 187, 192, 200, 202, 208, 210, 215, 216, 217, 220, 223, 224, 226, 227, 228, 240, 246, 255, 264, 272, 279 and the like.
  • ⁇ As yellow pigment C.I. I.
  • Pigment Yellow 150 and PY138 PY1, 2, 3, 4, 5, 6, 10, 12, 13, 14, 15, 16, 17, 18, 20, 24, 31, 32, 34, 35, 35 : 1, 36, 36: 1, 37, 37: 1, 40, 42, 43, 53, 55, 60, 61, 62, 63, 65, 73, 74, 77, 81, 83, 86, 93, 94 95, 97, 98, 100, 101, 104, 106, 108, 109, 110, 113, 114, 115, 116, 117, 118, 119, 120, 123, 125, 126, 127, 128, 129, 137 139, 144, 146, 147, 148, 151, 152, 153, 154, 155, 156, 161, 162, 164, 166, 167, 168, 169, 170, 1, 1,172,173,174,175,176,177,179,180,181,182,
  • Orange pigment is C.I. I. Pigment Orange 36, 43, 51, 55, 59, 61, 71, 73 and the like.
  • green pigments examples include C.I. I. In addition to “Pigment” Green 58, PG7, 10, 36, 37, and the like can be given.
  • blue pigments examples include C.I. I. Pigment Blue 15, 15: 1, 15: 2, 15: 3, 15: 4, 15: 6, 16, 22, 60, 64, 80 and the like.
  • C.I. I. Pigment Violet 1 19, 23, 27, 29, 30, 32, 37, 40, 42, 50 and the like.
  • an inorganic pigment may be used in combination in order to ensure good coatability, sensitivity, developability and the like while balancing saturation and lightness.
  • examples of inorganic pigments include yellow lead, zinc yellow, red pepper, cadmium red, ultramarine, bitumen, chromium oxide green, cobalt green, and other metal oxide powders, metal sulfide powders, and metal powders.
  • a dye can be contained within a range that does not lower the heat resistance.
  • the transparent resin used for the photosensitive coloring composition is a resin having a transmittance of preferably 80% or more, more preferably 95% or more in the entire wavelength region of 400 to 700 nm in the visible light region.
  • the transparent resin includes a thermoplastic resin, a thermosetting resin, and a photosensitive resin. If necessary, the transparent resin can be used alone or in admixture of two or more monomers or oligomers that are precursors thereof that are cured by irradiation with radiation to produce a transparent resin.
  • thermoplastic resin examples include butyral resin, styrene-maleic acid copolymer, chlorinated polyethylene, chlorinated polypropylene, polyvinyl chloride, vinyl chloride-vinyl acetate copolymer, polyvinyl acetate, polyurethane resin, and polyester resin. , Acrylic resins, alkyd resins, polystyrene, polyamide resins, rubber resins, cyclized rubber resins, celluloses, polyethylene, polybutadiene, polyimide resins, and the like.
  • thermosetting resin examples include epoxy resins, benzoguanamine resins, rosin-modified maleic acid resins, rosin-modified fumaric acid resins, melamine resins, urea resins, and phenol resins.
  • the photosensitive resin examples include (meth) acrylic compounds having a reactive substituent such as an isocyanate group, an aldehyde group, and an epoxy group on a linear polymer having a reactive substituent such as a hydroxyl group, a carboxyl group, or an amino group, A resin obtained by reacting an acid and introducing a photocrosslinkable group such as a (meth) acryloyl group or a styryl group into the linear polymer is used.
  • a reactive substituent such as an isocyanate group, an aldehyde group, and an epoxy group on a linear polymer having a reactive substituent such as a hydroxyl group, a carboxyl group, or an amino group
  • a resin obtained by reacting an acid and introducing a photocrosslinkable group such as a (meth) acryloyl group or a styryl group into the linear polymer is used.
  • linear polymers containing acid anhydrides such as styrene-maleic anhydride copolymer and ⁇ -olefin-maleic anhydride copolymer can be obtained from (meth) acrylic compounds having hydroxyl groups such as hydroxyalkyl (meth) acrylate. Half-esterified products are also used.
  • polymerizable monomers examples include trimethylolpropane tri (meth) acrylate, pentaerythritol tri (meth) acrylate, dipentaerythritol hexa (meth) acrylate, and ethylene oxide-modified trimethylolpropane tri (meth).
  • Representative examples include various acrylic esters and methacrylic esters such as acrylate and propylene oxide-modified trimethylolpropane tri (meth) acrylate. These can be used alone or in combination of two or more, and for the purpose of maintaining appropriate photocurability, other polymerizable monomers and oligomers can be mixed and used as necessary.
  • polymerizable monomers and oligomers include methyl (meth) acrylate, ethyl (meth) acrylate, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, cyclohexyl (meth) acrylate, ⁇ -carboxyethyl (Meth) acrylate, diethylene glycol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, triethylene glycol di (meth) acrylate, tripropylene glycol di (meth) acrylate, trimethylolpropane tri (meth) acrylate , Pentaerythritol tri (meth) acrylate, 1,6-hexanediol diglycidyl ether di (meth) acrylate, bisphenol A diglycidyl ether di (meth) a Relate, neopentyl glycol diglycidyl ether
  • a photopolymerization initiator or the like is added to the photosensitive coloring composition.
  • photopolymerization initiators 4-phenoxydichloroacetophenone, 4-t-butyl-dichloroacetophenone, diethoxyacetophenone, 1- (4-isopropylphenyl) -2-hydroxy-2-methylpropan-1-one, 1- Acetophenone compounds such as hydroxycyclohexyl phenyl ketone, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -butan-1-one, benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzyl Benzoin compounds such as dimethyl ketal, benzophenone, benzoylbenzoic acid, methyl benzoylbenzoate, 4-phenylbenzophenone, hydroxybenzophenone, acrylated be
  • photopolymerization initiators are used. . These photopolymerization initiators can be used alone or in combination.
  • the amount of the photopolymerization initiator used is preferably 0.5 to 50% by mass, more preferably 3 to 30% by mass, based on the total solid content of the photosensitive coloring composition.
  • sensitizers triethanolamine, methyldiethanolamine, triisopropanolamine, methyl 4-dimethylaminobenzoate, ethyl 4-dimethylaminobenzoate, isoamyl 4-dimethylaminobenzoate, 2-dimethylaminoethyl benzoate, 2-Ethylhexyl 4-dimethylaminobenzoate, N, N-dimethylparatoluidine, 4,4'-bis (dimethylamino) benzophenone, 4,4'-bis (diethylamino) benzophenone, 4,4'-bis (ethylmethyl) Amine-based compounds such as amino) benzophenone can also be used in combination. These sensitizers can be used alone or in combination.
  • the amount of the sensitizer used is preferably 0.5 to 60% by mass, more preferably 3 to 40% by mass based on the total amount of the photopolymerization initiator and the sensitizer.
  • the photosensitive coloring composition can contain a polyfunctional thiol that functions as a chain transfer agent.
  • the polyfunctional thiol may be a compound having two or more thiol groups. For example, hexanedithiol, decanedithiol, 1,4-butanediol bisthiopropionate, 1,4-butanediol bisthioglycolate, ethylene Glycol bisthioglycolate, ethylene glycol bisthiopropionate, trimethylolpropane tristhioglycolate, trimethylolpropane tristhiopropionate, trimethylolpropane tris (3-mercaptobutyrate), pentaerythritol tetrakisthioglycolate, Pentaerythritol tetrakisthiopropionate, tris (2-hydroxyethyl) isocyanurate, trimercaptopropionate, 1,4-dimethylmercaptobenz
  • examples of the thermal crosslinking agent include melamine resin and epoxy resin.
  • examples of the melamine resin include alkylated melamine resins (methylated melamine resin, butylated melamine resin, etc.), mixed etherified melamine resins, and the like, which may be a high condensation type or a low condensation type.
  • examples of the epoxy resin include glycerol / polyglycidyl ether, trimethylolpropane / polyglycidyl ether, resorcin / diglycidyl ether, neopentyl glycol / diglycidyl ether, 1,6-hexanediol / diglycidyl ether, ethylene glycol (polyethylene). Glycol) and diglycidyl ether. Any of these may be used alone or in admixture of two or more.
  • the photosensitive coloring composition can contain an organic solvent as necessary.
  • the organic solvent include cyclohexanone, ethyl cellosolve acetate, butyl cellosolve acetate, 1-methoxy-2-propyl acetate, diethylene glycol dimethyl ether, ethylbenzene, ethylene glycol diethyl ether, xylene, ethyl cellosolve, methyl-n amyl ketone, propylene glycol monomethyl ether toluene, Examples include methyl ethyl ketone, ethyl acetate, methanol, ethanol, isopropyl alcohol, butanol, isobutyl ketone, petroleum solvent, and the like. These may be used alone or in combination.
  • a transparent resin and a pigment are kneaded well using two rolls to form a chip, and then a solvent is added to form a paste.
  • a method of obtaining a photosensitive coloring composition by adding an agent and a sensitizer as required.
  • a photosensitive coloring composition is applied onto a transparent substrate and prebaked.
  • Spin coating, dip coating, die coating, etc. are usually used as the means for coating, but the coating means is not limited to these as long as it can be coated on a 40 to 60 cm square substrate with a uniform film thickness.
  • Prebaking is preferably performed at 50 to 120 ° C. for about 10 to 20 minutes.
  • the coating film thickness is arbitrary, but considering the spectral transmittance and the like, the film thickness after pre-baking is usually about 2 ⁇ m.
  • the substrate on which the photosensitive coloring composition is applied and a coating film is formed is exposed through a photomask.
  • a normal high-pressure mercury lamp or the like may be used as the light source.
  • An alkaline aqueous solution is used as the developer.
  • the alkaline aqueous solution include a sodium carbonate aqueous solution, a sodium hydrogen carbonate aqueous solution, a mixed aqueous solution of the two, or a mixture obtained by adding an appropriate surfactant to them. After development, it is washed with water and dried to obtain a pixel of any one color.
  • a color filter including each color pixel in which the necessary number of colors are combined can be obtained by changing the photosensitive coloring composition and the photomask and repeating the necessary number of steps as described above.
  • FIG. 6 is a schematic cross-sectional view of the liquid crystal display device according to the first to third embodiments of the present invention.
  • the liquid crystal display device of FIG. 6 is a typical example of a thin film transistor (TFT) driving type liquid crystal display device, and includes transparent substrates 11 and 21 arranged to face each other, and liquid crystal (LC) is sealed between them.
  • TFT thin film transistor
  • the liquid crystal display device of the present invention includes liquid crystal such as TN (Twisted Nematic), STN (Super Twisted Nematic), IPS (In-Planes Switching), VA (Vertical Alignment), OCB (Optically Compensated Birefringence), and ferroelectric liquid crystal. Is applicable.
  • a TFT array 12 is formed on the inner surface of the first transparent substrate 11, and a transparent electrode layer 13 made of, for example, indium-tin-oxide (ITO) is formed thereon.
  • An alignment layer 14 is provided on the transparent electrode layer 13.
  • a polarizing plate 15 is formed on the outer surface of the transparent substrate 11.
  • the color filter 22 of the present invention is formed on the inner surface of the second transparent substrate 21. Red, green and blue pixels constituting the color filter 22 are separated by a black matrix (not shown).
  • a transparent protective film (not shown) is formed so as to cover the color filter 22 and further, a transparent electrode layer 23 made of, for example, ITO is formed thereon, and the alignment layer 24 covers the transparent electrode layer 23. Is provided.
  • a polarizing plate 25 is formed on the outer surface of the transparent substrate 21. Note that the backlight unit 30 of the present invention is provided below the polarizing plate 15.
  • Test example 1 This test example corresponds to the first embodiment of the present invention, and the green color of the color filter in the case of using a white LED device in which a red LED, a green LED, and a blue LED are combined in a backlight to mix emission colors. This shows the effect of using brominated zinc phthalicyanine green pigment in the pixel.
  • the pigment dispersion paste is prepared by uniformly stirring and mixing a pigment, an acrylic resin, and propylene glycol monomethyl ether acetate (hereinafter referred to as PGMEA), and using a zirconia bead having a diameter of 1.0 mm in a sand mill. For 3 hours, and then filtered through a 5 ⁇ m filter. All composition ratios are weight ratios.
  • the acrylic resin used was synthesized in the above synthesis example.
  • photosensitive coloring composition As shown in Tables 2-5 below, each component was prepared in the proportions shown in Tables 2-5 below, stirred and mixed with a stirrer until each component was completely dissolved, and filtered through a 1 ⁇ m filter. Photosensitive coloring compositions R-1, G-1 to G20, and B-1 were prepared.
  • the green photosensitive coloring compositions used for forming the green pixels are the green photosensitive coloring compositions G-1 to G-20 having pigment ratios (weight percentages) as shown in Tables 7 and 8 below.
  • the blue photosensitive coloring composition used for formation of a blue pixel is a blue photosensitive coloring composition of a pigment ratio (weight percentage) as shown in Table 9 below.
  • a three-color filter was prepared by adjusting the combinations shown in the following examples and comparative examples. The adjustment chromaticity value is based on the EBU standard value, which is a broadcast standard, but is not limited to this range.
  • the red photosensitive coloring composition shows R-1 shown in Table 2 (Table 6)
  • the blue photosensitive coloring composition shows B-1 shown in Table 5 (Table 9)
  • the green photosensitive coloring composition shows the above.
  • G-1 to G-10 shown in Tables 2 and 3 Table 7
  • a three-color filter was produced with the above-mentioned designated chromaticity aim.
  • Examples 1 to 10 are combinations of backlights having a white LED device in which these color filters are combined with red LEDs, green LEDs, and blue LEDs to mix emission colors.
  • the red photosensitive coloring composition is R-1 shown in Table 2 (Table 6)
  • the blue photosensitive coloring composition is B-1 shown in Table 5 (Table 9)
  • the green photosensitive coloring composition Used G-11 to G-20 shown in Tables 4 and 5 (Table 8), and a three-color filter was prepared with the above-mentioned chromaticity aim.
  • Comparative Examples 1 to 10 are combinations of backlights each including a white LED device in which these color filters are combined with red LEDs, green LEDs, and blue LEDs to mix emission colors.
  • ⁇ Evaluation item ⁇ (brightness)
  • the lightness (G ⁇ Y) of the green pixel and the lightness (W ⁇ Y) in white display as a color filter are calculated by C.I. I. Pigment Green 58 (PG58) and C.I. I. In the case of using Pigment Green 36 (PG36), the brighter one was marked with ⁇ and the lower one with x.
  • C.I. I A color filter according to an embodiment using Pigment Green 58; I.
  • the color filter according to the comparative example using the pigment green 36 is prepared by adjusting the xy chromaticity values in the CIE1931 XYZ display system to the same value, and then the xy chromaticity values are adjusted to the same value.
  • the numbers of the example and the comparative example were aligned (for example, Example 1 and Comparative Example 1 correspond), and the values of (GY) and (WY) were compared and judged.
  • Table 10 shows the evaluation results of Examples 1 to 10, and Table 11 shows the results of Comparative Examples 1 to 10.
  • the chromaticity values in Tables 10 and 11 are xy chromaticity and Y (lightness) in the CIE1931 XYZ color system.
  • Test example 2 This test example corresponds to the second embodiment of the present invention, and a green pixel of a color filter when a white LED device in which a blue LED and a YAG phosphor are combined to mix emission colors is used as a backlight. This shows the effect of using brominated zinc phthalocyanine green pigment.
  • the green photosensitive coloring compositions used for forming the green pixels are the green photosensitive coloring compositions G-21 to G-40 having pigment ratios (weight percentages) as shown in Tables 17 and 18 below.
  • the blue photosensitive coloring composition used for formation of a blue pixel is a blue photosensitive coloring composition of a pigment ratio (weight percentage) as shown in Table 19 below.
  • a three-color filter was prepared by adjusting the combinations shown in the following examples and comparative examples. The adjustment chromaticity value is based on the EBU standard value, which is a broadcast standard, but is not limited to this range.
  • the red photosensitive coloring composition has R-2 shown in Table 12 (Table 16), the blue photosensitive coloring composition has B-2 shown in Table 15 (Table 19), and the green photosensitive coloring composition has the above.
  • G-21 to G-30 shown in Tables 12 and 13 (Table 17) a three-color color filter was produced with the above-mentioned designated chromaticity aim.
  • Examples 11 to 20 are combinations of these color filters and a backlight having a white LED device in which a luminescent color is mixed by combining a blue LED and a YAG phosphor.
  • the red photosensitive coloring composition is R-2 shown in Table 12 (Table 16)
  • the blue photosensitive coloring composition is B-2 shown in Table 15 (Table 19)
  • the green photosensitive coloring composition Used G-31 to G-40 shown in Tables 14 and 15 (Table 18) to produce a three-color filter with the above-mentioned specified chromaticity aim.
  • Comparative examples 11 to 20 are combinations of these color filters and backlights having a white LED device in which light emission colors are mixed by combining blue LEDs and YAG phosphors.
  • ⁇ Evaluation item ⁇ (brightness)
  • the lightness (G ⁇ Y) of the green pixel and the lightness (W ⁇ Y) in white display as a color filter are calculated by C.I. I. Pigment Green 58 (PG58) and C.I. I. In the case of using Pigment Green 36 (PG36), the brighter one was marked with ⁇ and the lower one with x.
  • C.I. I A color filter according to an embodiment using Pigment Green 58; I.
  • the color filter according to the comparative example using the pigment green 36 is prepared by adjusting the xy chromaticity values in the CIE1931 XYZ display system to the same value, and then the xy chromaticity values are adjusted to the same value.
  • the numbers of the example and the comparative example were aligned (for example, Example 1 and Comparative Example 1 correspond), and the values of (GY) and (WY) were compared and judged.
  • chromaticity values in Tables 20 and 21 below are xy chromaticity and Y (lightness) in the CIE1931 XYZ color system.
  • Test example 3 This test example corresponds to the third embodiment of the present invention, and is a color filter when a white LED device in which a blue LED and a red / green light emitting phosphor are combined to mix emission colors is used as a backlight. This shows the effect of using a brominated zinc phthalocyanine green pigment for a green pixel.
  • the green photosensitive coloring compositions used for forming the green pixels are the green photosensitive coloring compositions G-41 to G-60 having pigment ratios (weight percentages) as shown in Tables 27 and 28 below.
  • the blue photosensitive coloring composition used for formation of a blue pixel is a blue photosensitive coloring composition of a pigment ratio (weight percentage) as shown in Table 29 below.
  • a three-color filter was prepared by adjusting the combinations shown in the following examples and comparative examples. The adjustment chromaticity value is based on the EBU standard value, which is a broadcast standard, but is not limited to this range.
  • the red photosensitive coloring composition has R-3 shown in Table 22 (Table 26), the blue photosensitive coloring composition has B-3 shown in Table 25 (Table 29), and the green photosensitive coloring composition has the above.
  • G-41 to G-50 shown in Tables 22 and 23 (Table 17) a three-color filter was produced with the above-mentioned designated chromaticity aim.
  • Examples 21 to 30 are combinations of these color filters and backlights having a white LED device in which light emission colors are mixed by combining blue LEDs and red / green light emitting phosphors.
  • the red photosensitive coloring composition is R-3 shown in Table 22 (Table 26), the blue photosensitive coloring composition is B-3 shown in Table 25 (Table 29), and the green photosensitive coloring composition.
  • Comparative Examples 21 to 30 are combinations of these color filters and backlights having a white LED device in which light emission colors are mixed by combining blue LEDs and red / green light emitting phosphors.
  • ⁇ Evaluation item ⁇ (brightness)
  • the lightness (G ⁇ Y) of the green pixel and the lightness (W ⁇ Y) in white display as a color filter are calculated by C.I. I. Pigment Green 58 (PG58) and C.I. I. In the case of using Pigment Green 36 (PG36), the brighter one was marked with ⁇ and the lower one with x.
  • C.I. I A color filter according to an embodiment using Pigment Green 58; I.
  • the color filter according to the comparative example using the pigment green 36 is prepared by adjusting the xy chromaticity values in the CIE1931 XYZ display system to the same value, and then the xy chromaticity values are adjusted to the same value.
  • the numbers of the example and the comparative example were aligned (for example, Example 1 and Comparative Example 1 correspond), and the values of (GY) and (WY) were compared and judged.
  • chromaticity values in the following Tables 30 and 31 are xy chromaticity and Y (lightness) in the CIE1931 XYZ color system.

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  • Mathematical Physics (AREA)
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  • Crystallography & Structural Chemistry (AREA)
  • Optical Filters (AREA)
  • Liquid Crystal (AREA)
PCT/JP2009/052162 2008-02-13 2009-02-09 カラーフィルタおよびこれを用いた液晶表示装置 WO2009101916A1 (ja)

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CN103149799A (zh) * 2011-12-07 2013-06-12 三菱化学株式会社 着色树脂组合物、滤色器、液晶显示装置及有机el显示装置
KR102158811B1 (ko) * 2018-07-03 2020-09-22 주식회사 엘엠에스 지문인식센서용 광학원판 및 이를 포함하는 광학필터

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JP2006113099A (ja) * 2004-10-12 2006-04-27 Toppan Printing Co Ltd カラーフィルタ
JP2006184427A (ja) * 2004-12-27 2006-07-13 Dainippon Ink & Chem Inc カラーフィルター用緑色セミクルードの製造方法、緑色顔料組成物、およびそれらを緑色画素部に含有してなるカラーフィルター
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