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WO2014002982A1 - Filtre couleur et dispositif d'affichage - Google Patents

Filtre couleur et dispositif d'affichage Download PDF

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Publication number
WO2014002982A1
WO2014002982A1 PCT/JP2013/067334 JP2013067334W WO2014002982A1 WO 2014002982 A1 WO2014002982 A1 WO 2014002982A1 JP 2013067334 W JP2013067334 W JP 2013067334W WO 2014002982 A1 WO2014002982 A1 WO 2014002982A1
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WIPO (PCT)
Prior art keywords
color
sub
pixel
subpixel
blue
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Ceased
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PCT/JP2013/067334
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English (en)
Japanese (ja)
Inventor
野中晴支
長瀬亮
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Toray Industries Inc
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Toray Industries Inc
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Priority to JP2013529492A priority Critical patent/JP6287209B2/ja
Publication of WO2014002982A1 publication Critical patent/WO2014002982A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • 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
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix

Definitions

  • the present invention relates to a color filter and a display device.
  • Liquid crystal display devices are used in various applications such as televisions, notebook computers, portable information terminals, smartphones, digital cameras, etc., taking advantage of characteristics such as light weight, thinness, and low power consumption.
  • a color filter is a member necessary for color display of a liquid crystal display device. Pixels composed of three sub-pixels, a red sub-pixel, a green sub-pixel, and a blue sub-pixel, are finely patterned. A three-color filter is generally used. In the three-color filter, white is obtained by additive color mixing of three sub-pixels of red, green, and blue.
  • Patent Document 1 In order to control the white balance of the white display of the four-color filter, a color filter in which any of the red, green, and blue columnar pixels is arranged in an island shape in the fourth color sub-pixel (Patent Document 2), A color filter (Patent Document 3) in which a plurality of through holes are formed in a sub-pixel has been proposed.
  • a four-color display device combining a white light emitting element and a color filter has also been proposed for a display device using organic EL as a backlight (Patent Document 4).
  • the present invention has an object to provide a color filter that is excellent in white balance control despite the downsizing of the sub-pixel due to the improvement in the resolution of the display device, and that can be stably and highly accurately produced. To do.
  • the present inventors have not unilaterally matched the chromaticity of the additive color mixture of the three sub-pixels of red, green, and blue with the chromaticity of the white sub-pixel at the same time. It has been found that the chromaticity of the white subpixel of the fourth color is matched with the chromaticity of the additive color mixture of the three subpixels of red, green, and blue.
  • any one or more of the red, green, and blue sub-pixels extend to the opening of the adjacent sub-pixel of the fourth color, and part of the opening is shielded, so that white balance can be achieved while maintaining dimensional accuracy. Found that it is possible to control.
  • the present invention provides the color filter and display device described in the following (1) to (4).
  • a pixel composed of a red subpixel, a green subpixel, a blue subpixel and a fourth color subpixel, and a black matrix formed between the subpixels is formed on a transparent substrate.
  • the red, green, and blue subpixels each contain a colorant and a resin, and the CIE1931 color system tristimulus value (Y) of the fourth color subpixel is 65 ⁇ Y ⁇ 99.
  • a sub-pixel selected from the group consisting of the red, green and blue sub-pixels extends to the adjacent black matrix and the opening of the fourth color sub-pixel, and the sub-pixel of the fourth color A color filter that covers 5 to 40% of the opening area.
  • the color filter according to (1), wherein the subpixel that shields the subpixel of the fourth color is a blue pixel.
  • the top surface shape of the subpixel that shields the subpixel of the fourth color is: The color filter according to (1) or (2), which is rectangular.
  • a display device comprising the color filter according to any one of (1) to (5) above.
  • the color filter of the present invention it is possible to control the white balance without being affected by the downsizing of the subpixel accompanying the improvement in the resolution of the display device. Furthermore, the color filter of the present invention can be stably produced with high dimensional accuracy.
  • the color filter (hereinafter referred to as “CF”) of the present invention is formed on a transparent substrate between a red subpixel, a green subpixel, a blue subpixel, and a fourth color subpixel, and each of the subpixels.
  • the red, green, and blue subpixels each contain a colorant and a resin, and the CIE1931 colorimetric tristimulus value of the fourth color subpixel.
  • (Y) is 65 ⁇ Y ⁇ 99, and a subpixel selected from the group consisting of the red, green, and blue subpixels extends to the opening of the adjacent black matrix and the subpixels of the fourth color. In other words, 5 to 40% of the opening area of the sub-pixel of the fourth color is shielded.
  • a black matrix 2 is formed on a transparent substrate 1, and red, green, and blue subpixel formation regions 3R, 3G, and 3B on the black matrix are red.
  • Sub-pixel 4R, green sub-pixel 4G, and blue sub-pixel 4B are formed, respectively, and a fourth color sub-pixel formation region 3W, that is, an opening of the fourth color sub-pixel 4W and the opening
  • the blue sub-pixel 4B which is another sub-pixel, extends to part of the black matrix that forms the pixel, and the opening of the sub-pixel 4W of the fourth color needs to be shielded. is there.
  • the sub-pixel extending to the fourth color sub-pixel is preferably a blue pixel.
  • the sub-pixel 4W of the fourth color is omitted.
  • the fourth color sub-pixel 4W is formed as shown in FIG. In FIG. 12, the fourth subpixel includes a portion extending from the blue subpixel 4B.
  • the size of the opening of each sub-pixel may be different.
  • the aperture of the fourth color sub-pixel may be larger than the aperture of the red, green, and blue sub-pixels.
  • the openings of the subpixels may be smaller than the openings of the red, green, and blue subpixels.
  • the CIE1931 color system tristimulus value (Y) (hereinafter, “(Y)”) of the subpixel of the fourth color needs to be in the range of 65 ⁇ Y ⁇ 99.
  • the ratio of the opening area of the subpixels of the fourth color to be shielded can be appropriately selected from desired white balance and transmittance.
  • the sub-pixel opening means, for example, each region surrounded by the black matrix 2 in FIG.
  • the opening area of the subpixel means the area of the region.
  • the opening area of the subpixel of the fourth color is obtained by the product of the width 5 and the width 6 shown in FIG.
  • the blue sub-pixel extends so as to be shielded across the center of the opening of the sub-pixel of the fourth color.
  • 4 is a cross-sectional view taken along line AA ′ and line BB ′ in FIG. 3.
  • FIG. 4C which is a cross-sectional view taken along line AA ′, the blue subpixel is Since it is integrally formed including the extending part, even if the extending part becomes small, the blue subpixel is not easily lost in the development process.
  • the area of the blue subpixel extending on the black matrix is larger, so even if the opening of the subpixel of the fourth color is reduced, the development process Blue subpixels are not easily lost.
  • the extension of the present invention is defined as follows.
  • a sub-pixel selected from the group consisting of red, green and blue sub-pixels is continuously connected to the fourth color sub-pixel and extends to the fourth color sub-pixel.
  • the formed pixels are formed at the same time as subpixels selected from the group consisting of red, green and blue subpixels. Since the sub-pixels formed at the same time have no joints, it can be determined from the presence or absence of joints by microscopic observation or SEM observation.
  • the green subpixel in addition to the blue subpixel, also extends to the opening of the fourth color subpixel.
  • the combination of the two sub-pixels to be extended may be blue and red, or may be green and red.
  • colorants used for pixels include pigments and dyes.
  • Examples of the pigment used for the red subpixel include PR254, PR149, PR166, PR177, PR209, PY138, PY150, and PYP139.
  • Examples of the pigment used for the green subpixel include PG7, PG36, and PG58. , PG37, PB16, PY129, PY138, PY139, PY150 or PY185, and examples of the pigment used for the blue subpixel include PB15: 6 or PV23.
  • blue dyes include C.I. I. Basic blue (BB) 5, BB7, BB9 or BB26 may be mentioned, and examples of red dye include C.I. I. Acid Red (AR) 51, AR87 or AR289.
  • BB Basic blue
  • AR Acid Red
  • resins used for red, green, and blue subpixels include acrylic resins, epoxy resins, and polyimide resins, but photosensitive acrylic resins are preferable because the manufacturing cost of CF can be reduced.
  • the photosensitive acrylic resin generally contains an alkali-soluble resin, a photopolymerizable monomer, and a photopolymerization initiator.
  • alkali-soluble resin examples include a copolymer of an unsaturated carboxylic acid and an ethylenically unsaturated compound.
  • unsaturated carboxylic acids include acrylic acid, methacrylic acid, itaconic acid, crotonic acid, maleic acid, fumaric acid, vinyl acetic acid or acid anhydrides.
  • photopolymerizable monomers examples include trimethylolpropane tri (meth) acrylate, pentaerythritol tri (meth) acrylate, triacryl formal, pentaerythritol tetra (meth) acrylate, dipentaerythritol hexa (meth) acrylate or dipentaerythritol. Examples include penta (meth) acrylate.
  • photopolymerization initiators examples include benzophenone, N, N′-tetraethyl-4,4′-diaminobenzophenone, 4-methoxy-4′-dimethylaminobenzophenone, 2,2-diethoxyacetophenone, ⁇ -hydroxyisobutylphenone , Thioxanthone or 2-chlorothioxanthone.
  • Examples of the solvent for dissolving the photosensitive acrylic resin include propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, ethyl acetoacetate, methyl-3-methoxypropionate, ethyl-3-ethoxypropionate , Methoxybutyl acetate or 3-methyl-3-methoxybutyl acetate.
  • the resin component and colorant which consist of alkali-soluble resin, a photopolymerizable monomer, and a polymer dispersing agent are handled as total solid content.
  • the black matrix of CF is preferably a resin black matrix containing a light shielding agent and a resin.
  • the light shielding agent include carbon black, titanium oxide, titanium oxynitride, titanium nitride, or iron tetroxide.
  • the resin used for the resin black matrix is preferably a non-photosensitive polyimide resin because a thin pattern can be easily formed.
  • the non-photosensitive polyimide resin is preferably a polyimide resin obtained by thermosetting a polyamic acid resin synthesized from an acid anhydride and a diamine after patterning.
  • acid anhydrides include pyromellitic dianhydride, 3,3 ′, 4,4′-oxydiphthalcarboxylic dianhydride, 3,3 ′, 4,4′-benzophenonetetracarboxylic dianhydride Or 3,3 ′, 4,4′-biphenyltrifluoropropanetetracarboxylic dianhydride.
  • diamines examples include paraphenylene diamine, 3,3'-diaminodiphenyl ether, 4,4'-diaminodiphenyl ether, or 3,4'-diaminodiphenyl ether.
  • solvent that dissolves the polyamic acid resin examples include N-methyl-2-pyrrolidone or ⁇ -butyrolactone.
  • a subpixel using a colorant composition other than that in the extending subpixel may not be formed.
  • dents are generated on the surface of the CF, so that the surface of the CF is flattened on the CF as shown in FIG. It is preferable to form a film.
  • the planarizing film 7 the CF surface becomes flat.
  • the resin used for forming the planarizing film include an epoxy resin, an acrylic epoxy resin, an acrylic resin, a siloxane resin, or a polyimide resin.
  • the film thickness of the planarizing film is preferably a film thickness that makes the surface flat, more preferably 0.5 to 5.0 ⁇ m, and even more preferably 1.0 to 3.0 ⁇ m.
  • the transparent substrate examples include soda glass, non-alkali glass, and quartz glass. Moreover, you may use a transparent resin board or a resin film.
  • a resin black matrix is formed on a transparent substrate using a light-shielding agent composition, and then red, green, blue and fourth color subpixels are formed using a colorant composition.
  • the light-shielding agent composition is prepared by mixing a light-shielding agent with a polyamic acid resin and a solvent and performing a dispersion treatment, and then adding various additives.
  • the total solid content in this case is the total of the polyamic acid resin as the resin component and the light shielding agent.
  • the light-shielding agent composition is applied by a method such as a spin coater or a die coater, then vacuum-dried, and semi-cured in a hot air oven or hot plate at 90 to 130 ° C. to form a light-shielding agent coating film.
  • a method such as a spin coater or a die coater
  • After applying the positive resist it is vacuum-dried and prebaked in a hot air oven or hot plate at 80 to 110 ° C. to form a resist film.
  • alkali development such as 1.5 to 3% by mass of potassium hydroxide or tetramethylammonium hydroxide is performed.
  • a pattern is obtained by removing the exposed portion with a liquid.
  • imidation of the polyamic acid resin proceeds by heating in a hot air oven or hot plate at 250 to 300 ° C. for 10 to 60 minutes to form a resin black matrix.
  • the width of the resin black matrix can be changed by changing the design width or exposure amount of the photomask.
  • the colorant composition is prepared using a colorant and a resin.
  • a pigment is used as the colorant, the pigment is mixed with a polymer dispersant and a solvent and subjected to a dispersion treatment, and then added with an alkali-soluble resin, a monomer, a photopolymerization initiator, and the like.
  • the dye is prepared by adding a solvent, an alkali-soluble resin, a monomer, a photopolymerization initiator, and the like.
  • the total solid content in this case is the total of the polymer component, the alkali-soluble resin and monomer, which are resin components, and the colorant.
  • the obtained colorant composition is applied onto a transparent substrate on which a resin black matrix is formed by a method such as a spin coater or a die coater, and then vacuum-dried to form a colorant coating film.
  • a method such as a spin coater or a die coater
  • exposure is selectively performed with ultraviolet rays or the like through a photomask by a proximity exposure machine or a projection exposure machine.
  • development is performed with an alkaline developer such as 0.02 to 1% by mass of potassium hydroxide or tetramethylammonium hydroxide, and the pattern is obtained by removing unexposed portions.
  • the obtained coating film pattern is heat-treated in a hot air oven or hot plate at 180 to 250 ° C. for 5 to 40 minutes, so that the sub-pixel becomes a patterned CF.
  • the patterning process as described above is sequentially performed on the red sub-pixel, the green sub-pixel, and the blue sub-pixel. It is formed so that 5 to 40% of the opening area of the color sub-pixel is shielded.
  • an acrylic resin is applied as a planarizing film by a method such as a spin coater or a die coater, vacuum-dried, and prebaked in a hot air oven or hot plate at 80 to 110 ° C., and then heated in a hot air oven or hot at 150 to 250 ° C.
  • the CF pixel of the present invention can be manufactured by forming a planarizing film by heating on a plate for 5 to 40 minutes.
  • the order of subpixel patterning is not particularly limited.
  • the CF of the present invention is used in a transmissive display device that emits light from the back surface of the CF.
  • a transmissive display device is preferable because the manufacturing cost is low and the contrast ratio is high.
  • CCFL CCFL
  • LED organic EL
  • a light source hereinafter referred to as “backlight”
  • the LED backlight include a two-wavelength LED backlight or a three-wavelength LED backlight, but it is preferable to use a two-wavelength LED composed of a blue LED and a yellow YAG phosphor.
  • white balance can be controlled. Further, according to the present invention, white balance can be controlled even in combination with organic EL.
  • the chromaticity of the sub-pixels of red, green and blue and the fourth color is determined by measuring the transmittance spectrum of each sub-pixel using a microspectrophotometer (for example, MCPD-2000; manufactured by Otsuka Electronics Co., Ltd.)
  • the chromaticity (x, y) is calculated based on the CIE 1931 standard.
  • the white balance of CF is the absolute value ( ⁇ x, ⁇ y) of the difference ( ⁇ x, ⁇ y) between the chromaticity (x, y) of the fourth color sub-pixel and the additive color mixture chromaticity (x, y) of the red-green-blue sub-pixel (
  • the transmittance of the CF pixel can be evaluated from (Y) of the subpixels of the fourth color obtained as described above and (Y) of the additive color mixture of the red, green, and blue subpixels.
  • the CF color reproduction range includes a triangular area connecting the chromaticities (x, y) of red, green, and blue sub-pixels and a triangular area connecting NTSC standard chromaticities (x, y). It can be calculated from the area ratio.
  • the NTSC standard chromaticity (x, y) is red (0.67, 0.33), green (0.21, 0.71), and blue (0.14, 0.08).
  • the color reproduction range of CF is preferably 70 to 100%.
  • (Y) of the red, green, and blue subpixels decreases in principle as the color reproduction range becomes wider, but (Y) of the fourth color subpixel becomes a high value regardless of the color reproduction range. . Therefore, in the CF of the present invention, (Y) of CF can be increased even at 70 to 100%, which is considered to have a sufficiently wide color reproduction range.
  • the aperture area of the subpixel can be measured by observation with an optical microscope.
  • CF forms a plurality of screens of a display device on one transparent substrate.
  • For an image in one screen of a display device observed with an optical microscope measure the short side and the long side of the subpixel opening by 5 or more points using image processing or length measurement software. Determine the area.
  • the width of the sub-pixel, the area of the sub-pixel extending to the opening of the sub-pixel of the fourth color, and the like are also determined based on the average value measured at five or more points.
  • the film thickness of the black matrix, subpixels, and planarization film can be measured with a surface step meter (for example, Surfcom 1400D; manufactured by Tokyo Seimitsu Co., Ltd.).
  • a surface step meter for example, Surfcom 1400D; manufactured by Tokyo Seimitsu Co., Ltd.
  • the amount of indentation of the planarization film on the fourth color sub-pixel can also be measured.
  • the film thickness of the sub-pixel is preferably 1.2 to 2.5 ⁇ m. If the film thickness is thinner than 1.2 ⁇ m, the chromaticity of the red, green, and blue sub-pixels may be poor, or the film strength may be reduced by increasing the amount of the colorant relative to the pixel film thickness and decreasing the resin component. Film defect occurs. If the film thickness is greater than 2.5 ⁇ m, the flatness of the CF may decrease.
  • the film thickness of the black matrix is preferably 0.5 to 1.5 ⁇ m. When the film thickness is thinner than 0.5 ⁇ m, the light shielding property is not sufficient, and when the film thickness is thicker than 1.5 ⁇ m, the flatness of the CF may be lowered.
  • liquid crystal display device comprising the CF of the present invention
  • the CF and the array substrate are bonded to each other through a liquid crystal alignment film that has been subjected to a rubbing process for liquid crystal alignment provided on the substrate and a spacer for maintaining a cell gap.
  • a thin film transistor (hereinafter referred to as “TFT”) element a thin film diode (hereinafter referred to as “TFD”) element, a scanning line, a signal line, or the like is provided over the array substrate to manufacture a TFT liquid crystal display device or a TFD liquid crystal display device. be able to.
  • TFT thin film transistor
  • TFD thin film diode
  • a scanning line a signal line
  • liquid crystal is injected from an injection port provided in the seal portion to seal the injection port.
  • a backlight is attached and an IC driver or the like is mounted to complete the liquid crystal display device.
  • the chromaticity (x, y) of the backlight is preferably 0.250 ⁇ x ⁇ 0.350 and 0.300 ⁇ y ⁇ 0.400.
  • the liquid crystal display device comprising the backlight having the chromaticity (x, y) in the above range and the CF of the present invention has good white display chromaticity (x, y) and the screen of the liquid crystal display device. Variation in white display chromaticity (x, y) is reduced, and the white balance is excellent.
  • the film thickness of each subpixel can be measured with an SEM, a stylus film thickness meter, a laser microscope, or the like.
  • Determination A ⁇ t ⁇ 0.12 ⁇ m
  • Determination B 0.12 ⁇ m ⁇ ⁇ t ⁇ 0.20 ⁇ m
  • Determination C ⁇ t> 0.2 ⁇ m
  • As a colorant 50 g of PR177 (Chromofine (registered trademark) Red 6125EC; manufactured by Dainichi Seika) and 50 g of PR254 (Irgaphore (registered trademark) Red BK-CF; manufactured by Ciba Specialty Chemicals Co., Ltd.) were mixed.
  • the beaker containing the slurry was connected to a circulating bead mill disperser (Dynomill KDL-A; manufactured by Willy et Bacofen) with a tube, and using zirconia beads having a diameter of 0.3 mm as a medium, dispersion at 3200 rpm for 4 hours Processing was performed to obtain a colorant dispersion RA-1.
  • a circulating bead mill disperser (Dynomill KDL-A; manufactured by Willy et Bacofen) with a tube, and using zirconia beads having a diameter of 0.3 mm as a medium, dispersion at 3200 rpm for 4 hours Processing was performed to obtain a colorant dispersion RA-1.
  • a colored dispersant RA-2 was obtained in the same manner as the colorant dispersion RA-1 except that 50 g of propylene glycol monomethyl ether acetate was used.
  • a colored dispersant RA-3 was obtained in the same manner as the colorant dispersion RA-1, except that 50 g of BYK2000, 50 g of cyclomer ACA250, and 50 g of propylene glycol monomethyl ether acetate were used.
  • the concentration of the colorant in the total solid content in the colorant composition was 52% by mass.
  • a colored book organism R-3 was obtained in the same manner as the colorant composition R-1, except that 15.6 g of the cyclomer ACA250 was used.
  • the concentration of the colorant in the total solid content in the colorant composition was 24.8% by mass.
  • Colored Biology R- similar to Colorant Composition R-1, except that Colorant Dispersion RA-3 was used, Cyclomer ACA250 was not added, and Kayarad DPHA was 2.3 g. 4 was obtained.
  • the concentration of the colorant in the total solid content in the colorant composition was 62% by mass.
  • a colored book organism R-5 was obtained in the same manner as the colorant composition R-1, except that 23.7 g of the cyclomer ACA250 was used.
  • the concentration of the colorant in the total solid content in the colorant composition was 20.7% by mass.
  • Adjustment Example 2 Production of a green colorant composition for forming a green subpixel
  • PG7 Hosta Palm (registered trademark) Green GNX; manufactured by Clariant Japan
  • PY150 E4GNGT; manufactured by LANXESS
  • 100 g of BYK2000, 67 g of cyclomer ACA250, 83 g of propylene glycol monomethyl ether and 650 g of propylene glycol monomethyl ether acetate are mixed with this colorant, and zirconia beads having a diameter of 0.3 mm are used with DYNOMILL KDL-A.
  • a dispersion treatment was performed at 3200 rpm for 6 hours to obtain a colorant dispersion GA-1.
  • a color dispersant GA-2 was obtained in the same manner as the colorant dispersion GA-1, except that 83 g of propylene glycol monomethyl ether acetate was used.
  • a colored dispersant GA-3 was obtained in the same manner as the colorant dispersion GA-1, except that 50 g of BYK2000, 30 g of cyclomer ACA250, and 83 g of propylene glycol monomethyl ether acetate were used.
  • the coloring book organism G- 2 was obtained.
  • the concentration of the colorant in the total solid content in the colorant composition was 59% by mass.
  • a colored book organism G-3 was obtained in the same manner as the colorant composition G-1, except that the cyclomer ACA250 was changed to 15 g.
  • the concentration of the colorant in the total solid content in the colorant composition was 28% by mass.
  • the coloring book organism G-4 was the same as the coloring agent composition G-1, except that the coloring agent dispersion GA-3 was used, the cyclomer ACA250 was not added, and the Kayrad DPHA was 1.0 g. Got.
  • the concentration of the colorant in the total solid content in the colorant composition was 70% by mass.
  • a colored book organism G-5 was obtained in the same manner as the colorant composition G-1, except that the cyclomer ACA250 was changed to 19 g and the Kayarad DPHA was changed to 1.0 g.
  • the concentration of the colorant in the total solid content in the colorant composition was 23.3% by mass.
  • the slurry was subjected to a dispersion treatment at 3200 rpm for 3 hours using zirconia beads having a diameter of 0.3 mm using a disperser DYNOMILL KDL-A to obtain a colorant dispersion BA-1.
  • a color dispersant BA-2 was obtained in the same manner as the colorant dispersion BA-1, except that 100 g of propylene glycol monomethyl ether acetate was used.
  • a colored dispersant BA-3 was obtained in the same manner as the colorant dispersion BA-1, except that 50 g of BYK2000, 50 g of cyclomer ACA250, and 100 g of propylene glycol monomethyl ether acetate were used.
  • a colored dispersant BA-4 was obtained in the same manner as the colorant dispersion BA-1, except that PB15: 6 was changed to 78 g.
  • the coloring book organism B- was the same as the colorant composition B-1. 2 was obtained.
  • the concentration of the colorant in the total solid content in the colorant composition was 47% by mass.
  • a colored book organism B-3 was obtained in the same manner as the colorant composition B-1.
  • the concentration of the colorant in the total solid content in the colorant composition was 22.4% by mass.
  • Colored book organism B-4 was obtained in the same manner as Colorant Composition B-1, except that Colorant Dispersion BA-3 was used and Cyclomer ACA250 was not added.
  • the concentration of the colorant in the total solid content in the colorant composition was 56% by mass.
  • Colored book organism B-5 was obtained in the same manner as the colorant composition B-1, except that the colorant dispersion BA-4 was used and the cyclomer ACA250 was changed to 16.8 g.
  • the concentration of the colorant in the total solid content in the colorant composition was 18.7% by mass.
  • Example 1 Production of CF having Red, Green, Blue and Fourth Color Subpixels Apply the light-shielding agent composition obtained in Preparation Example 4 on a 300 ⁇ 350 mm alkali-free glass substrate (AN100; manufactured by Asahi Glass Co., Ltd.) using a spinner, and then heat-treat at 135 ° C. for 20 minutes in a hot air oven. Thus, a light shielding film was obtained. Subsequently, a positive resist (LC100; manufactured by Rohm and Haas Electronic Materials Co., Ltd.) was applied with a spinner and dried at 90 ° C. for 10 minutes. The film thickness of the positive resist was 1.5 ⁇ m.
  • Exposure was performed through a photomask using an exposure machine LE4000A (manufactured by Hitachi High-Technologies Corporation).
  • the photomask was designed to have a short side width of 26 ⁇ m, a long side width of 116 ⁇ m, and a black matrix width of 4.0 ⁇ m.
  • the widths of red, green and blue and the sub-pixels of the fourth color are all the same.
  • the proximity gap between the lower surface of the photomask and the upper surface of the glass substrate was 100 ⁇ m. Next, a 23 ° C.
  • aqueous solution containing 2% by mass of tetramethylammonium hydroxide was used as a developer, and the substrate was immersed in the developer, and at the same time, the substrate was swung so that the 10 cm width reciprocated once every 5 seconds.
  • the development of the positive resist and the etching of the polyimide precursor were simultaneously performed. Thereafter, the positive resist was peeled off by dipping in methyl cellosolve acetate. Thereafter, the polyimide acid resin was cured by being held at 290 ° C. for 30 minutes in a hot air oven to obtain a resin black matrix.
  • the short side width of the openings of the subpixels of the obtained black matrix was 26 ⁇ m
  • the long side width was 116 ⁇ m
  • the width of the black matrix was 4.0 ⁇ m.
  • the spinner rotation speed was adjusted so that the film thickness of the resin black matrix was 1.0 ⁇ m.
  • the red colorant composition R-1 obtained in Preparation Example 1 was applied onto a glass substrate on which a resin black matrix was formed using a spinner, and then heat-treated in a hot air oven at 90 ° C. for 10 minutes to give a red color.
  • a membrane was obtained.
  • exposure was performed through a photomask using an exposure machine LE4000A.
  • the photomask was designed such that the exposed portion (red subpixel portion) was formed in a stripe shape.
  • an alkali obtained by adding 0.1% by mass of a nonionic surfactant (Emulgen (registered trademark) A-60; manufactured by Kao Corporation) to a 0.04% by mass aqueous potassium hydroxide solution with respect to the total amount of the developer.
  • a nonionic surfactant Emulgen (registered trademark) A-60; manufactured by Kao Corporation
  • the substrate was immersed in a developing solution for 90 seconds and then washed with pure water to remove unexposed portions and obtain a patterned substrate. Thereafter, the acrylic resin was cured by holding at 220 ° C. for 30 minutes in a hot air oven, and a stripe-shaped red subpixel having a width of 30 ⁇ m was obtained.
  • the chromaticity (x, y) of the obtained red subpixel was (0.630, 0.311), (Y) was 19.6, and the film thickness of the red subpixel was 2.0 ⁇ m. .
  • a green subpixel was formed in the same manner as the red subpixel.
  • the chromaticity (x, y) of the obtained green subpixel was (0.223, 0.601), (Y) was 43.6, and the film thickness of the green subpixel was 2.0 ⁇ m. .
  • the blue colorant composition B-1 obtained in Preparation Example 3 was applied by a spinner onto a glass substrate on which a resin black matrix, red and green subpixels were formed, and then heated in a hot air oven at 90 ° C. for 10 minutes. By processing, a blue colored film was obtained. Next, exposure was performed through a photomask using an exposure machine LE4000A. As shown in FIG. 1, the photomask has a blue subpixel in a stripe shape, that is, a rectangular top surface, in the direction of the black matrix formed between the subpixels of the fourth color and the subpixel of the fourth color. Designed to extend.
  • an alkali obtained by adding 0.1% by mass of a nonionic surfactant (Emulgen (registered trademark) A-60; manufactured by Kao Corporation) to a 0.04% by mass aqueous potassium hydroxide solution with respect to the total amount of the developer.
  • a nonionic surfactant Emulgen (registered trademark) A-60; manufactured by Kao Corporation
  • the substrate was immersed in a developing solution for 90 seconds and then washed with pure water to remove unexposed portions and obtain a patterned substrate.
  • the acrylic resin is cured by holding at 220 ° C. for 30 minutes in a hot air oven, and the openings of the sub-pixels of the fourth color are shielded over a width of 5.2 ⁇ m, and the total width is 37.2 ⁇ m.
  • the blue subpixel was obtained.
  • the ratio of the opening area of the fourth color sub-pixel shielded by the extended blue sub-pixel was 20%.
  • the chromaticity (x, y) of the obtained blue subpixel was (0.134, 0.120), (Y) was 14.7, and the film thickness of the blue subpixel was 2.0 ⁇ m. .
  • the resin composition obtained in Preparation Example 5 was applied by a spinner so that the film thickness after curing was 1.5 ⁇ m, and then prebaked at 130 ° C. for 5 minutes in a hot air oven. Next, heat treatment was performed in a hot air oven at 210 ° C. for 30 minutes to cure the resin, and CF was produced.
  • Example 2 Production of CF having Red, Green, Blue and Fourth Color Subpixels A CF was fabricated in the same manner as in Example 1 except that the ratio of the opening area of the fourth color sub-pixel shielded by the extended blue sub-pixel was changed to 5%.
  • Example 3 Production of CF having Red, Green, Blue and Fourth Color Subpixels A CF was manufactured in the same manner as in Example 1 except that the ratio of the opening area of the fourth color sub-pixel shielded by the extended blue sub-pixel was changed to 10%.
  • Example 4 Production of CF having Red, Green, Blue and Fourth Color Subpixels A CF was fabricated in the same manner as in Example 1 except that the ratio of the opening area of the fourth color sub-pixel shielded by the extended blue sub-pixel was changed to 40%.
  • Example 2 Production of CF having red, green, blue and fourth color sub-pixels
  • a CF was fabricated in the same manner as in Example 1 except that the ratio of the opening area of the fourth color sub-pixel shielded by the extended blue sub-pixel was changed to 50%.
  • Example 5 Production of CF having red, green, blue and fourth color sub-pixels
  • the green colorant composition G-1 obtained in Preparation Example 2 was applied by a spinner onto a glass substrate on which a resin black matrix and red subpixels were formed, and then heated in a hot air oven A green colored film was obtained by heat treatment at 90 ° C. for 10 minutes.
  • exposure was performed through a photomask using an exposure machine LE4000A.
  • the photomask has a stripe shape, ie, a rectangular sub-surface with green subpixels in the direction of the black matrix formed between the fourth color subpixels and the fourth color subpixels. Designed to extend.
  • an alkali obtained by adding 0.1% by mass of a nonionic surfactant (Emulgen (registered trademark) A-60; manufactured by Kao Corporation) to a 0.04% by mass aqueous potassium hydroxide solution with respect to the total amount of the developer.
  • a nonionic surfactant Emulgen (registered trademark) A-60; manufactured by Kao Corporation
  • the substrate was immersed in a developing solution for 90 seconds and then washed with pure water to remove unexposed portions and obtain a patterned substrate.
  • the acrylic resin is cured by holding at 220 ° C. for 30 minutes in a hot air oven, and the openings of the subpixels of the fourth color are shielded over a width of 2.0 ⁇ m.
  • the subpixel was obtained.
  • the ratio of the opening area of the fourth color sub-pixel shielded by the extended green sub-pixel was 7.5%.
  • the blue colorant composition B-1 obtained in Preparation Example 3 was applied with a spinner, and then heat-treated in a hot air oven at 90 ° C. for 10 minutes to obtain a blue colored film.
  • exposure was performed through a photomask using an exposure machine LE4000A.
  • the photomask has a stripe shape, ie, a blue subpixel whose top surface is rectangular in the direction of the black matrix formed between the subpixels of the fourth color and the subpixels of the fourth color. Designed to extend.
  • an alkali obtained by adding 0.1% by mass of a nonionic surfactant (Emulgen (registered trademark) A-60; manufactured by Kao Corporation) to a 0.04% by mass aqueous potassium hydroxide solution with respect to the total amount of the developer.
  • a nonionic surfactant Emulgen (registered trademark) A-60; manufactured by Kao Corporation
  • the substrate was immersed in a developing solution for 90 seconds and then washed with pure water to remove unexposed portions and obtain a patterned substrate.
  • the acrylic resin is cured by holding at 220 ° C. for 30 minutes in a hot air oven, and the openings of the sub-pixels of the fourth color are shielded over a width of 5.9 ⁇ m, and the total width is 37.9 ⁇ m.
  • the blue subpixel was obtained.
  • the ratio of the opening area of the fourth color sub-pixel shielded by the extended blue sub-pixel was 22.5%.
  • the resin composition obtained in Preparation Example 5 was applied by a spinner so that the film thickness after curing was 1.5 ⁇ m, and then prebaked at 130 ° C. for 5 minutes in a hot air oven. Next, heat treatment was performed in a hot air oven at 210 ° C. for 30 minutes to cure the resin, and CF was produced.
  • Table 1 shows white chromaticities (x, y), (Y), and fourth colors of additive CFs of red, green, and blue sub-pixels for the CFs produced in Examples 1 to 5 and Comparative Examples 1 to 3.
  • the chromaticity (x, y) and (Y) values of the sub-pixels, the white balance, and the determination result of (Y) are shown.
  • of the white and fourth subpixels of additive colors of red, green, and blue are both 0.03.
  • the (Y) of the subpixels of the fourth color were all 65 or more and were good. Further, in Example 5, by extending the green and blue subpixels in the openings of the fourth color subpixels, a good CF with better white balance and high (Y) was obtained. In Comparative Example 1, since the other subpixels were not extended to the openings of the fourth color subpixels, the white balance was poor. In Comparative Example 2, since 50% of the opening area of the sub-pixel of the fourth color was shielded, (Y) was lowered and white display became dark CF.
  • Example 6 Production of CF having Red, Green, Blue and Fourth Color Subpixels As shown in FIG. 3, a CF was manufactured in the same manner as in Example 1 except that the blue subpixel was extended so as to be shielded across the center of the opening of the fourth color subpixel.
  • Example 7 Production of CF having sub-pixels of red, green, and blue
  • a CF was manufactured in the same manner as in Example 1 except that the blue subpixel was extended so as to be shielded across the upper end of the opening of the fourth color subpixel. .
  • Example 8 Production of CF having Red, Green, Blue and Fourth Color Subpixels As shown in FIG. 6, a CF was manufactured in the same manner as in Example 1 except that the blue subpixel was extended so as to shield the vicinity of the center of the opening of the fourth color subpixel.
  • Example 9 Production of CF having Red, Green, Blue and Fourth Color Subpixels As shown in FIG. 7, a CF was manufactured in the same manner as in Example 1 except that a blue subpixel extending to the opening of the fourth color subpixel was formed for each subpixel.
  • Example 10 Production of CF having Red, Green, Blue and Fourth Color Subpixels As shown in FIG. 8, except that the blue subpixel is extended in such a manner as to shield the lower end portion and the upper end portion of the openings of the second fourth color subpixels positioned in the column, respectively.
  • a CF was produced in the same manner as in Example 1.
  • Example 11 Production of CF having Red, Green, Blue and Fourth Color Subpixels
  • a CF was produced in the same manner as in Example 7 except that the red, green, blue and fourth color subpixels of the CF were arranged in a mosaic pattern.
  • an alkali obtained by adding 0.1% by mass of a nonionic surfactant (Emulgen (registered trademark) A-60; manufactured by Kao Corporation) to a 0.04% by mass aqueous potassium hydroxide solution with respect to the total amount of the developer.
  • a nonionic surfactant Emulgen (registered trademark) A-60; manufactured by Kao Corporation
  • acrylic resin was hardened by hold
  • the white balance could not be controlled because a cylindrical pixel having a diameter of 12 ⁇ m which was to be formed in the fourth color sub-pixel was missing.
  • an alkali obtained by adding 0.1% by mass of a nonionic surfactant (Emulgen (registered trademark) A-60; manufactured by Kao Corporation) to a 0.04% by mass aqueous potassium hydroxide solution with respect to the total amount of the developer.
  • a nonionic surfactant Emulgen (registered trademark) A-60; manufactured by Kao Corporation
  • acrylic resin was hardened by hold
  • the through hole to be formed in the subpixel of the fourth color had a diameter smaller than 12 ⁇ m and the surface of the subpixel was slightly concave, so that the through hole could not be formed. Since a predetermined through-hole could not be formed, neither white balance control nor (Y) improvement of the fourth color sub-pixel could be achieved.
  • Example 12 The design is such that the short side width of the subpixel opening is 12 ⁇ m, the long side width is 60 ⁇ m, and the width of the black matrix is 4.0 ⁇ m. The width of the striped red and green subpixels is 16 ⁇ m. Example 2 except that the total width of the striped blue sub-pixel is 20.4 ⁇ m and that the opening area of the sub-pixel of the fourth color is shielded by 20%. A CF was prepared in the same manner as in 1.
  • Example 13 The design is such that the short side width of the subpixel opening is 48 ⁇ m, the long side width is 204 ⁇ m, and the width of the black matrix is 4.0 ⁇ m. The width of the striped red and green subpixels is 52 ⁇ m. Example 1 except that the total width of the striped blue sub-pixel is 63.6 ⁇ m, and that 20% of the opening area of the sub-pixel of the fourth color is shielded. Similarly, CF was produced.
  • Example 14 Fabrication of CF having thinned red, green, blue and fourth color sub-pixels
  • the CF colorant composition was changed to R-2, the green colorant composition was changed to G-2, and the blue colorant composition was changed to B-2.
  • the chromaticity (x, y) of the obtained red subpixel was (0.630, 0.311), (Y) was 19.6, and the film thickness of the red subpixel was 1.2 ⁇ m.
  • the chromaticity (x, y) of the obtained green subpixel was (0.223, 0.601), (Y) was 43.6, and the film thickness of the green subpixel was 1.2 ⁇ m.
  • the chromaticity (x, y) of the obtained blue subpixel was (0.134, 0.120), (Y) was 14.7, and the film thickness of the blue subpixel was 1.2 ⁇ m. .
  • Example 15 Production of CF having thickened red, green, blue and fourth color sub-pixels
  • the CF colorant composition was changed to R-3, the green colorant composition was changed to G-3, and the blue colorant composition was changed to B-3.
  • the chromaticity (x, y) of the obtained red subpixel was (0.630, 0.311), (Y) was 19.6, and the film thickness of the red subpixel was 2.5 ⁇ m.
  • the chromaticity (x, y) of the obtained green subpixel was (0.223, 0.601), (Y) was 43.6, and the film thickness of the green subpixel was 2.5 ⁇ m.
  • the chromaticity (x, y) of the obtained blue subpixel was (0.134, 0.120), (Y) was 14.7, and the film thickness of the blue subpixel was 2.5 ⁇ m. .
  • Example 16 The CF colorant composition was changed to R-5, the green colorant composition was changed to G-5, and the blue colorant composition was changed to B-5.
  • the chromaticity (x, y) of the obtained red subpixel was (0.630, 0.311), (Y) was 19.6, and the film thickness of the red subpixel was 3.0 ⁇ m.
  • the chromaticity (x, y) of the obtained green subpixel was (0.223, 0.601), (Y) was 43.6, and the film thickness of the green subpixel was 3.0 ⁇ m.
  • the chromaticity (x, y) of the obtained blue subpixel was (0.134, 0.120), (Y) was 14.7, and the film thickness of the blue subpixel was 3.0 ⁇ m. .
  • Table 2 shows the dents on the surface of the sub-pixel of the fourth color in each of the CFs produced in Example 1, Example 12, Example 13, Example 14, Example 15, and Comparative Example 7.
  • a dent may occur on the surface even after the planarization film is formed.
  • Example 1 and Example 12 in which the size of the opening was relatively small, the surface flatness was good, but Example 13 in which the short side width of the opening was 48 ⁇ m and Example 15 in which the thickness of the subpixel was thick. Then, the surface flatness tended to be slightly deteriorated.
  • Example 14 where the subpixel film thickness was small, the surface flatness was good.
  • Example 16 since the sub-pixel film thickness was as thick as 3.0 ⁇ m, the surface flatness was deteriorated, but it could be used.
  • the CF of the present invention can be suitably used for a display device such as a liquid crystal display or an organic EL.

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KR20160017187A (ko) * 2014-07-31 2016-02-16 삼성디스플레이 주식회사 액정 표시 장치
WO2016052152A1 (fr) * 2014-10-01 2016-04-07 ソニー株式会社 Dispositif d'affichage et appareil électronique
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JP2014098780A (ja) * 2012-11-14 2014-05-29 Toppan Printing Co Ltd カラーフィルタおよび平面型カラー表示装置
WO2015122284A1 (fr) * 2014-02-14 2015-08-20 富士フイルム株式会社 Composition de résine colorée, film durci l'utilisant, filtre couleur et procédé de production de ce dernier, élément d'imagerie à semi-conducteurs et dispositif d'affichage d'images
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EP2980638A1 (fr) * 2014-07-31 2016-02-03 Samsung Display Co., Ltd. Système d'affichage a cristaux liquides colore avec des pixels blancs supplémentaires
EP2980637A1 (fr) * 2014-07-31 2016-02-03 Samsung Display Co., Ltd. Dispositif d'affichage a cristaux liquides
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JPWO2016052152A1 (ja) * 2014-10-01 2017-07-13 ソニー株式会社 表示装置および電子機器
WO2016052152A1 (fr) * 2014-10-01 2016-04-07 ソニー株式会社 Dispositif d'affichage et appareil électronique
KR20160062814A (ko) * 2014-11-25 2016-06-03 삼성디스플레이 주식회사 액정 표시 장치
KR102189522B1 (ko) 2014-11-25 2020-12-14 삼성디스플레이 주식회사 액정 표시 장치
WO2018120646A1 (fr) * 2016-12-30 2018-07-05 惠科股份有限公司 Panneau d'affichage, et panneau d'affichage à cristaux liquides et dispositif d'affichage à cristaux liquides l'utilisant
US10429701B2 (en) 2016-12-30 2019-10-01 HKC Corporation Limited Display panel and LCD panel and LCD apparatus using the same
JP2021131403A (ja) * 2020-02-18 2021-09-09 三菱電機株式会社 表示装置、画像データ変換装置およびホワイトバランス調整方法
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