KR20150008521A - composition for forming white patterns of non-display part - Google Patents

Abstract

The present invention relates to a composition for forming a white pattern of a non-display part and, more specifically, to a composition for forming a white pattern of a non-display part capable of showing vivid white color by improving whiteness index by including a white coloring agent and a calcium carbonate shielding material and forming a pattern with excellent shielding properties and colorability.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a white non-

The present invention relates to a composition for forming a white non-display portion pattern.

The fine patterns used in semiconductor circuit devices and display devices such as LCDs and PDPs are formed by photolithography using a photoresist. Photolithography has the advantage of precisely obtaining a desired pattern There is a disadvantage in that a lot of steps are required, that many kinds of materials are used to maximize the effect of the photoresist, and that a large amount of photoresist is consumed in the process of coating and the like.

Recently, as one of the next generation processes for overcoming the shortcomings of such photolithography, there has been proposed a technique of obtaining a fine pattern by a roll printing or an inkjet printing method.

Various methods such as offset printing, reverse offset printing, and roll-to-roll printing can be applied to the formation of fine patterns by roll printing. R (Red), G (TFT), a pattern for forming an electrode of a plasma display panel (PDP), and a pattern transfer of a barrier rib material, as well as a color and a BM (black matrix) pattern of a blue (B)

Recently, a method of forming the non-display portion pattern of the touch screen panel by roll printing has been proposed.

Fig. 1 shows an image display device (cellular phone) including a touch screen panel. The display portion refers to a portion where an image is displayed. The non-display portion refers to an edge portion where an image is not displayed.

Since the non-display portion is the uppermost layer visible to the consumer, the white ink used at this time is required to exhibit shielding property, high resistance and excellent coloring property.

In such a white ink, a colorant containing titanium dioxide is usually used. In the case of titanium dioxide, the reflectance is lowered at a wavelength of 420 nm or less, causing a yellowing phenomenon, so that a clear white color can not be exhibited.

Korean Unexamined Patent Publication No. 2010-39652 discloses a UV-curable white ink composition which is of no use type.

Korea Patent Publication No. 2010-39652

It is an object of the present invention to provide a composition for forming a white non-display portion pattern which is improved in whiteness and exhibits a clear white color.

It is another object of the present invention to provide a composition for forming a white non-display portion pattern having excellent shielding properties.

Another object of the present invention is to provide a composition for forming a white non-display portion pattern which is excellent in heat resistance and can minimize color change under high temperature conditions.

It is still another object of the present invention to provide a composition for forming a white non-display portion pattern capable of suppressing the occurrence of cracks.

Another object of the present invention is to provide a composition for forming a white non-display portion pattern having excellent printability.

1. A composition for forming a white non-indicator portion pattern, comprising a white colorant and a calcium carbonate shielding agent.

2. The white colorant of claim 1, wherein the white colorant is selected from the group consisting of CI pigment white 4, 5, 6, 6: 1, 7, 18, 18: 1, 19, 20, 22, 25, 26, 27, Wherein the composition is at least one selected from the group consisting of polyvinyl alcohol and polyvinyl alcohol.

3. The composition for forming a white non-indicator portion pattern according to 1 above, wherein the white colorant and the calcium carbonate shielding agent are mixed in a weight ratio of 9: 1 to 5: 5.

4. The composition for forming a white non-indicator portion pattern according to 1 above, which comprises 10 to 60% by weight of a white colorant and 1 to 15% by weight of a calcium carbonate shielding agent.

5. The white non-display portion pattern forming composition according to 1 above, further comprising a binder resin, a thermal polymerization initiator and a solvent.

6. The composition for forming a white non-display portion pattern according to 5 above, wherein the binder resin is an acrylic resin.

7. The composition for forming a white non-display portion pattern according to 5 above, wherein the binder resin is a siloxane-based resin.

8. The composition for forming a white non-display portion pattern according to 7 above, wherein the binder resin comprises a repeating unit represented by the following formulas (1) and (2)

[Chemical Formula 1]

(2)

.

.

9. The composition for forming a white non-indicator portion pattern as described in 8 above, wherein the repeating units represented by Formulas 1 and 2 are contained in a molar ratio of 1: 5 to 9.

10. The composition for forming a white non-indicator portion pattern as described in 8 above, wherein the repeating units represented by Formulas 1 and 2 are contained in an amount of 30 to 100 mol%.

11. The composition for forming a white non-display portion pattern according to any one of the above 8 to 10, wherein the binder resin further comprises at least one of repeating units represented by the following formulas (3) to (5)

(3)

[Chemical Formula 4]

[Chemical Formula 5]

.

.

12. The composition of claim 5 wherein said solvent is selected from the group consisting of ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol Diethylene glycol dibutyl ether, methyl cellosolve acetate, ethyl cellosolve acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, methoxybutyl acetate, methyl Methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, ethanol, methanol, propanol, butanol, isopropanol, isopropanol, butanol, Hexanol, cyclohexanol, ethylene At least one selected from the group consisting of a lactone by recall, glycerin and γ- butynyl, composition for white non-display pattern is formed.

13. The composition for forming a white non-indicator portion pattern according to 5 above, which comprises 0.5 to 10% by weight of a binder resin, 0.1 to 3% by weight of a thermal polymerization initiator and 30 to 70% by weight of a solvent.

14. The composition for forming a white non-display portion pattern according to any one of 1 to 13 above, which is for roll printing.

The composition for forming a white non-display portion pattern of the present invention may exhibit a whiteness improvement and a clear white color.

The present invention can form a non-display portion pattern having a thinner but excellent shielding property.

The composition for forming a white non-display portion pattern of the present invention is excellent in heat resistance and can minimize color change even when exposed to high temperature conditions.

The composition for forming a white non-display portion pattern of the present invention can suppress a pattern crack.

The composition for forming a white non-display portion pattern of the present invention is excellent in printing property because ink coated on a roll at the time of printing is completely transferred to a substrate.

1 is a perspective view of an image display apparatus including a conventional touch screen panel.

The present invention relates to a composition for forming a pattern of a white non-display portion pattern which can improve a whiteness and exhibit a clear white color by including a white coloring agent and a calcium carbonate shielding agent, and which can form a pattern having excellent shielding properties and heat resistance.

Hereinafter, the present invention will be described in detail.

The composition for forming a white non-display portion pattern of the present invention includes a white coloring agent and a calcium carbonate shielding agent.

The white colorant is not particularly limited as long as it is a white inorganic pigment generally used in the art, for example, CI pigment white 4, 5, 6, 6: 1, 7, 18, 18: 1, 19, 20, 22, 25 , 26, 27, 28, 32 and the like, preferably CI pigment white 6 or white 22 in terms of reflection efficiency and whiteness. These may be used alone or in combination of two or more.

TiO ₂ contained in the CI pigment White 6 is inexpensive, has a high shielding ratio, and has high reflectance, so that it can be used as an effective white colorant. Preferably, the TiO ₂ has a rutile structure.

If necessary, the white colorant may be subjected to a surface treatment using a resin treatment, a pigment derivative into which an acidic group or a basic group has been introduced, a graft treatment on a pigment surface with a polymer compound or the like, an atomization treatment using a sulfuric acid atomization method or the like, A cleaning treatment with a solvent or water, a treatment for removing ionic impurities by an ion exchange method, or the like.

The white colorant may further comprise other white pigments within the scope of the present invention.

Since the calcium carbonate shielding agent is used together with a white colorant to significantly improve whiteness and shielding property, it is used to form a white non-display portion pattern (white matrix) of an image display device, a touch screen panel or the like to form a pattern having excellent whiteness and shielding .

Conventional ink compositions for forming white matrices were required to form thick white matrices or further form matrices having different colors thereon in order to have a good level of shielding at the required level.

However, since the present invention has excellent whiteness and shielding property even when it is formed of a thin coating film by including a calcium carbonate shielding agent, it is possible to form a matrix having a separate color or to secure a desired level of excellent shielding have. Thus, an image display device having a thinner structure can be realized.

The particle size of the white colorant and the calcium carbonate shielding agent is not particularly limited and may be appropriately selected so as to have excellent coloring property and shielding property. For example, the average particle diameter may be 10 to 400 nm, preferably 200 to 300 nm have. When the average particle diameter of the white coloring agent and the calcium carbonate shielding agent is 10 to 400 nm, the effect of improving the coloring property, the reflectance and the shielding property can be maximized.

The mixing ratio of the white coloring agent and the calcium carbonate shielding agent is not particularly limited as long as the function of the coloring agent and the calcium carbonate shielding agent is within the above range. For example, they can be mixed at a weight ratio of 9: 1 to 5: 5, : 3, more preferably from 9: 1 to 8: 2. The shielding property and the dispersion stability of the ink are excellent when the weight ratio of the white colorant and the calcium carbonate shielding agent is in the range of 9: 1 to 5: 5.

The content of the white coloring agent may be adjusted according to the required color characteristics, for example, 10 to 60% by weight, preferably 30 to 60% by weight of the total weight of the ink composition. When the white colorant is contained in an amount of 10 to 60% by weight, good shielding can be exhibited while maintaining an appropriate level of printability.

The content of the calcium carbonate shielding agent can be controlled according to the required color characteristics, for example, 1 to 15% by weight, preferably 5 to 12% by weight of the total weight of the ink composition. When the calcium carbonate shielding agent is contained in an amount of 1 to 15% by weight, the effect of improving the shielding ability can be maximized.

The composition for forming a white non-display portion pattern of the present invention further comprises a binder resin, a polymerization initiator and a solvent.

The binder resin serves as a pattern support and is not particularly limited as long as it is a known thermosetting resin used in an ink composition.

As the binder resin, for example, an acrylic resin having an ethylenic unsaturated group can be used. The resin may be a copolymer prepared by copolymerizing an acid group-containing monomer and a copolymerizable monomer.

Examples of the monomer containing an acid group include (meth) acrylic acid, crotonic acid, itaconic acid, maleic acid, fumaric acid, monomethylmaleic acid, isoprenesulfonic acid and styrenesulfonic acid. These monomers may be used singly or in combination .

Examples of the monomer copolymerizable with the monomer containing an acid group include styrene, chlorostyrene,? -Methylstyrene, vinyltoluene, methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) (Meth) acrylate, isobornyl (meth) acrylate, isobutyl (meth) acrylate, t-butyl (meth) acrylate, cyclohexyl Hydroxypropyl (meth) acrylate, tetrahydrofurfuryl (meth) acrylate, hydroxyethyl (meth) acrylate, 2-hydroxypropyl 2-hydroxypropyl (meth) acrylate, ethylhexyl acrylate, 2-methoxyethyl (meth) acrylate, 3-methoxybutyl (meth) Acrylate, ethoxydi (Meth) acrylates such as ethylene glycol (meth) acrylate, methoxy triethylene glycol (meth) acrylate, methoxy tripropylene glycol (meth) acrylate, methoxypolyethylene glycol p-nonylphenoxypolyethylene glycol (meth) acrylate, p-nonylphenoxypolypropylene glycol (meth) acrylate, tetrafluoropropyl (meth) acrylate, 1,1,1,3,3,3- (Meth) acrylate, heptadecafluorodecyl (meth) acrylate, tribromophenyl (meth) acrylate,? - Hydroxymethyl acrylate, ethyl? -Hydroxymethylacrylate, propyl? -Hydroxymethylacrylate, butyl? -Hydroxymethylacrylate, and the like. They may be mixed alone or in combination.

Alternatively, the binder resin copolymer according to the present invention may be reacted with a reactive monomer for introducing an ethylenically unsaturated group. Examples of such reactive monomers include glycidyl (meth) acrylate, vinylbenzyl glycidyl ether, vinyl glycidyl ether, allyl glycidyl ether, 4-methyl-4,5-epoxypentene, Trimethylsilylacetylene, trimethoxysilane,? -Glycidoxypropylmethyldiethoxysilane,? -Glycidoxypropyltriethoxysilane, novolinyl derivatives, etc. These may be used singly or in combination of two or more.

The method for producing the copolymer is not particularly limited and can be produced by a method such as bulk polymerization, solution polymerization, emulsion polymerization or suspension polymerization commonly used in the art.

Alternatively, when the binder resin according to the present invention is an acrylic resin, the present invention may further comprise a multifunctional monomer having an ethylenically unsaturated double bond.

The multifunctional monomer having an ethylenically unsaturated double bond is a component for enhancing the strength of the pattern and may include a monofunctional monomer. Specific examples include monofunctional compounds such as nonylphenylcarbitol acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-ethylhexylcarbitol acrylate, 2-hydroxyethyl acrylate and N- Monomer; (Meth) acrylates such as 1,6-hexanediol di (meth) acrylate, ethylene glycol di (meth) acrylate, neopentyl glycol di (meth) acrylate, triethylene glycol di Bifunctional monomers such as 3-methylpentanediol di (meth) acrylate; Trifunctional monomers such as trimethylolpropane tri (meth) acrylate and pentaerythritol tri (meth) acrylate; Tetrafunctional monomers such as pentaerythritol tetra (meth) acrylate; Pentafunctional monomers such as dipentaerythritol penta (meth) acrylate; And hexafunctional monomers such as dipentaerythritol hexa (meth) acrylate. These may be used alone or in combination of two or more.

The multifunctional monomer having an ethylenically unsaturated double bond may be contained in an amount of 1 to 10% by weight based on 100% by weight of the ink composition. Good pattern strength can be obtained in this content range.

According to another embodiment of the present invention, the binder resin according to the present invention may be a siloxane-based resin.

When the siloxane-based binder resin is used, the heat resistance is improved, and the change in color that may occur upon prolonged exposure to high temperature conditions can be minimized.

The siloxane-based resin may be a polymer or copolymer of a silane compound, an oligomer or a polymer.

The silane compound to be polymerized and contained in the siloxane resin of the present invention is not particularly limited and includes, for example, tetramethoxysilane, tetratetraxy (acetoxy) silane, trimethoxysilane, triethoxysilane, Silane, methyltriethoxysilane, methyltriacetoxysilane, methyltriisocyanate silane, methyltris (acetoxy) silane, 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3- Phenyl triisocyanate silane, phenyltris (acetoxy) silane, dimethyldimethoxysilane, dimethyldiethoxysilane, dimethyldiacetylsilane, dimethyldiethoxysilane, dimethyldiethoxysilane, dimethyldiethoxysilane, dimethyldiethoxysilane, Dimethyl methoxyacetoxy silane, dimethyl diisocyanate silane, dimethyl methoxy isocyanate silane, dimethyl bis (acetoxy) silane, methylphenyl dimethoxy silane , Diphenylmethoxysilane, and the like.

From the standpoint of improvement in heat resistance, the siloxane-based resin in the present invention may preferably include the repeating units represented by the following formulas (1) and (2)

 [Chemical Formula 1]

(2)

.

.

The repeating units represented by formulas (1) and (2) remarkably improve the heat resistance. Therefore, when a pattern to be applied to a display or the like is formed with the ink composition of the present invention, the color change that may occur when a high- . In addition, the ink coated on the rolls can be completely transferred onto the substrate by making the ink have an appropriate viscosity after being coated on the roll, thereby improving the printing property, and forming a pattern having a precise shape and excellent straightness.

The repeating unit represented by the formula (2) may be used together with the repeating unit represented by the formula (1) to suppress heat expansion and shrinkage, thereby minimizing cracking of the pattern.

The content ratio of the repeating units represented by formulas (1) and (2) is not particularly limited, and may be, for example, in a molar ratio of 1: 5 to 9, and preferably in a molar ratio of 1: 8 to 9. When the repeating units represented by formulas (1) and (2) are contained in a molar ratio of 1: 5 to 9, the heat resistance improvement and the crack restraining effect can be maximized.

In the binder resin according to the present invention, the repeating unit represented by the general formula (1) or (2) may be appropriately mixed according to the specific kind of other repeating units which may be contained together, and the content thereof is not particularly limited. Or 30 to 100 mol% of the repeating unit represented by 2 may be contained. When the repeating unit represented by the general formula (1) or (2) is within the above range, the heat resistance improvement and the crack restraining effect can be maximized.

The binder resin according to the present invention may further comprise at least one of the repeating units represented by the following formulas (3) to (5)

(3)

[Chemical Formula 4]

[Chemical Formula 5]

.

.

The effect of improving the printability can be further increased in the case of containing the repeating units represented by the formulas (3) to (5).

The molecular weight of the binder resin is not particularly limited, and for example, the weight average molecular weight may be 4,000 to 20,000.

The content of the binder resin is not particularly limited within a range capable of performing the function, and may be, for example, 0.5 to 10% by weight, preferably 1 to 5% by weight, of the total weight of the ink composition . When the content of the binder resin falls within the above range, cracking of the pattern can be suppressed and the effect of improving the heat resistance and printability can be maximized.

As the polymerization initiator, a known thermal polymerization initiator can be used. Among the oniums, the thermal polymerization initiator containing a sulfonium cation and an anion is superior in stability over time and shrinkage ratio It is preferable in that the adhesion between the ink composition and the substrate can be improved. These polymerization initiators may be used alone or in combination of two or more.

Specific examples of the sulfonium cation constituting the polymerization initiator include triphenylsulfonium, tris (4-tolyl) sulfonium, tris (4-isopropylphenyl) sulfonium, tris (2,6-dimethylphenyl) (4-chlorophenyl) sulfonium, diphenyl (4-hydroxyphenyl) sulfonium, methylphenyl (4-hydroxyphenyl) sulfonium, dibenzylphenylsulfonium, di Benzyl (4-hydroxyphenyl) sulfonium, benzyl (4-hydroxyphenyl) sulfonium, benzyl , Dimethyl (methoxy) sulfonium, dimethyl (ethoxy) sulfonium, dimethyl (propoxy) sulfonium, dimethyl (butoxy) Dimethyl (cyclopentyloxy) sulfonium, dimethyl (cyclopentyloxy) sulfonium, dimethyl (fluoromethoxy) sulfonium, Dimethyl (4-cyanobutoxy) sulfonium, dimethyl (8-nitrooctyloxy) sulfonium, dimethyl (18-tri Dimethyl (tris (trichloromethyl) methyl) sulfonium and the like. Of these, triphenylsulfonium, tris (triphenylsulfonium) Benzylmethyl (4-hydroxyphenyl) sulfonium, benzylmethyl (4-acetoxyphenyl) sulfonium and methyl (4-hydroxyphenyl) More preferred are tris (4-tolyl) sulfonium, benzylmethyl (4-acetoxyphenyl) sulfonium and benzylmethyl (4-hydroxyphenyl) sulfonium.

The kind of the anion constituting the polymerization initiator is not particularly limited, and examples thereof include halogen ions such as F ^- , Cl ^- , Br ^- and I ^- ; OH ^- ; ClO ₄ ^-; Sulfonic acid ions such as FSO ₃ ^- , ClSO ₃ ^- , CH ₃ SO ₃ ^- , C ₆ H ₅ SO ₃ ^- , and CF ₃ SO ₃ ^- ; HSO ₄ ^- , SO ₄ ^{2 -,} and the like; Carbonate ions such as HCO ₃ ^- , CO ₃ ^{2 -} and the like; Phosphate ions such as H ₂ PO ₄ ^- , HPO ₄ ^{2 -} , and PO ₄ ^{3 -} ; Fluorophosphate ions such as PF ₆ ^- and PF ₅ OH ^- ; Boric acid ions such as BF ₄ ^- , B (C ₆ F ₅ ) ₄ ^- , and B (C ₆ H ₄ CF ₃ ) ₄ ^- ; AlCl ₄ ^- ; BiF ₆ ^- ; Fluoro antimonic acid ions such as SbF ₆ ^- and SbF ₅ OH ^- ; ASF ₆ ^- , AsF ₅ OH ^-, and the like.

The content of the thermal polymerization initiator according to the present invention is not particularly limited within a range that can perform its function, and may be, for example, 0.1 to 3% by weight in the total weight of the ink composition, preferably 0.3 to 1.5% % Can be included. When the content of the thermal polymerization initiator is 0.1 to 3% by weight, appropriate polymerization degree and coating property can be ensured, and adhesion with the substrate can be effectively improved.

The solvent is preferably an ethylene glycol monoalkyl ether such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, or ethylene glycol monobutyl ether in consideration of solubility, dispersibility of the colorant, coating property, and the like; Diethylene glycol dialkyl ethers such as diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether and diethylene glycol dibutyl ether; Ethylene glycol alkyl ether acetates such as methyl cellosolve acetate and ethyl cellosolve acetate; Alkylene glycol alkyl ether acetates such as propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate and propylene glycol monopropyl ether acetate; Alkoxyalkyl acetates such as methoxybutyl acetate and methoxypentyl acetate; Alkyl acetates such as ethyl acetate, propyl acetate, butyl acetate and pentyl acetate; Aromatic hydrocarbons such as benzene, toluene and xylene; Ketones such as methyl ethyl ketone, acetone, methyl amyl ketone, methyl isobutyl ketone, and cyclohexanone; Alcohols such as ethanol, methanol, propanol, butanol, hexanol, cyclohexanol, ethylene glycol and glycerin; and cyclic esters such as? -butyrolactone. These may be used alone or in combination of two or more.

The content of the solvent is not particularly limited within a range capable of performing the function, and may be, for example, 30 to 70% by weight, preferably 40 to 60% by weight, of the total weight of the ink composition. When the content of the solvent is 30 to 70% by weight, the ink composition maintains a proper tinting strength and is easy to print.

The composition for forming a white non-display portion pattern of the present invention may contain additives such as a surfactant, a filler, a curing agent, an adhesion promoter, an antioxidant, an ultraviolet absorber, and a dispersant in accordance with necessity of a person skilled in the art It is also possible to use it in combination.

The kind of the surfactant is not particularly limited, and examples thereof include a silicone surfactant, a fluorine surfactant, or a mixture thereof.

Examples of the silicone surfactant include BYK-077, BYK-085, BYK-300, BYK-301, BYK-302, BYK-306, BYK-307, BYK-310, BYK- , BYK-323, BYK-325, BYK-330, BYK-331, BYK-333, BYK-335, BYK-341v344, BYK-345v346, BYK-348, BYK-354, BYK-355, -358, BYK-361, BYK-370, BYK-371, BYK-375, BYK-380 and BYK-390. These may be used alone or in combination of two or more.

Examples of the fluorine surfactant include F-114, F-177, F-410, F-411, F-450, F-493, F-494, F- 443 and F- 444 of DIC (DaiNippon Ink & F-480, F-472, F-474, F-475, TF-1127, TF-1127, TF-1128, TF-1127, TF-1126, TF-1127, F- , TF-1130, TF-1116SF, TF-1131, TF1132, TF1027SF, TF-1441, TF-1442, TF-1535; S-381, S-383, S-393, SC-101, Sc-105, KH-40, SA-100, S-611, S-386, S- 243, S-420, S-651 and the like. These may be used alone or in combination of two or more.

The composition for forming a white non-display portion pattern of the present invention can be applied to various printing processes such as screen printing, ink-jet printing, and roll printing without any limitation to form a pattern exhibiting excellent whiteness and shielding property. However, It is preferably used as an ink composition for roll printing.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to be illustrative of the invention and are not intended to limit the scope of the claims. It will be apparent to those skilled in the art that such variations and modifications are within the scope of the appended claims.

Example  One

CI pigment white 6, a calcium carbonate 10% by weight, a polyester dispersant 2% by weight and a residual amount of propylene glycol monomethyl ether acetate, 3% by weight of a copolymer of methacrylic acid and benzyl methacrylate having a weight average molecular weight (MW) of 15,000 as a binder resin, 0.5% by weight of SI-B3A (Samsine Chemical) as a thermal polymerization initiator and F-475 (DIC) in an amount of 0.5% by weight, propylene glycol monomethyl ether acetate as a solvent was added in the remainder and mixed. The mixture was stirred for 3 hours to prepare a composition for forming a white non-display portion pattern.

Example  2

A composition for forming a white non-display portion pattern was prepared in the same manner as in Example 1, except that the mill base contained 30 wt% of CI pigment White 6 and 15 wt% of calcium carbonate.

Example  3

A composition for forming a white non-display portion pattern was prepared in the same manner as in Example 1, except that the mill base contained 15% by weight of CI pigment White 6 and 18% by weight of calcium carbonate.

Example  4

A composition for forming a white non-display portion pattern was prepared in the same manner as in Example 1, except that the mill base contained 50% by weight of CI Pigment White 6 and 0.5% by weight of calcium carbonate.

Example  5

A composition for forming a white non-display portion pattern was prepared in the same manner as in Example 1, except that the mill base contained 60% by weight of CI Pigment White 6 and 25% by weight of calcium carbonate.

Example  6

A composition for forming a white non-display portion pattern was prepared in the same manner as in Example 1, except that 3 wt% of 3-methacryloxypropyltrimethoxysilane polymer was used as the binder resin.

Example  7

3% by weight of a binder resin having a weight average molecular weight (MW) of 6,000 and containing butyl acetate as a solvent at a molar ratio of 2: 6: 1: 1 of the repeating units represented by formulas 1, 2, 3 and 5 A composition for forming a white non-display portion pattern was prepared in the same manner as in Example 1.

Comparative Example  One

A composition for forming a white non-display portion pattern was prepared in the same manner as in Example 1, except that a calcium carbonate shielding agent was not included.

Comparative Example  2

A composition for forming a white non-display portion pattern was prepared in the same manner as in Example 7, except that the calcium carbonate shielding agent was not included.

Comparative Example  3

A composition for forming a white non-display portion pattern was prepared in the same manner as in Example 1, except that barium sulfate was used instead of the calcium carbonate shielding agent.

Experimental Example .

(1) Whiteness evaluation

The ink compositions of Examples and Comparative Examples were coated on a glass substrate using a spin coater. The coated substrate was pre-baked at 100 DEG C for 120 seconds and left at room temperature for 3 minutes. Thereafter, the coating film was cured by heating at 230 DEG C for 30 minutes, and then the L * value was measured with a color difference meter (I-5, X-rite).

(2) Shielding  evaluation

On the coating film of Experimental Example (1), a composition for forming a black matrix containing an acrylic resin was spin-coated to a thickness of 1.5 占 퐉 and then heated and cured at 230 占 폚 for 30 minutes to form a black matrix. Thereafter, observation was made on the opposite side of the surface on which the black matrix was formed, and the shielding properties were evaluated according to the following criteria.

&Amp; cir &: The black matrix was not visually observed at all, indicating completely white.

○: The black matrix is very weakly visible, but exhibits excellent whiteness.

?: The black matrix is visually recognized, indicating gray

X: The black matrix is completely blackened, indicating dark gray

The results are shown in Table 1 below.

division Whiteness (L *) Shielding Example 1 96 ◎ Example 2 96 ◎ Example 3 95 ○ Example 4 95 ○ Example 5 94 ○ Example 6 97 ◎ Example 7 98 ◎ Comparative Example 1 89 △ Comparative Example 2 89 △ Comparative Example 3 88 X

Referring to Table 1, the coating film formed from the composition for forming a white non-display portion pattern of Examples 1 to 7 had an L * value of 96 to 98 and an excellent whiteness degree.

In addition, the shielding property was remarkably improved, and the visibility of the black color of the black matrix layer formed behind the white matrix remarkably decreased.

However, the coating film formed of the composition for forming a white non-display portion pattern in Comparative Examples 1 to 3 was measured to have a low L * value of 90 or less and the whiteness decreased.

In addition, the blackness of the black matrix layer formed behind the white matrix was visually impaired to reveal gray or dark gray.

Claims (14)

A white coloring agent, and a calcium carbonate shielding agent.
The method of claim 1, wherein the white colorant is selected from the group consisting of CI pigment White 4, 5, 6, 6: 1, 7, 18, 18: 1, 19, 20, 22, 25, 26, 27, Wherein the composition is at least one composition for forming a white non-display portion pattern.
The composition for forming a white non-indicator portion pattern according to claim 1, wherein the white colorant and the calcium carbonate shielding agent are mixed in a weight ratio of 9: 1 to 5: 5.
The composition for forming a white non-display portion pattern according to claim 1, which comprises 10 to 60% of a white colorant and 1 to 15% of a calcium carbonate shielding agent.
The composition for forming a white non-display portion pattern according to claim 1, further comprising a binder resin, a thermal polymerization initiator and a solvent.
The composition for forming a white non-display portion pattern according to claim 5, wherein the binder resin is an acrylic resin.
The composition for forming a white non-display portion pattern according to claim 5, wherein the binder resin is a siloxane-based resin.
The composition for forming a white non-display portion pattern according to claim 7, wherein the binder resin comprises the repeating units represented by the following formulas (1) and (2)
[Chemical Formula 1]

(2)

.
The composition according to claim 8, wherein the repeating units represented by formulas (1) and (2) are contained in a molar ratio of 1: 5 to 9.
The composition for forming a white non-indicator portion pattern according to claim 8, wherein the repeating units represented by the formulas (1) and (2) are contained in an amount of 30 to 100 mol%.
9. The composition for forming a white non-display portion pattern according to claim 8, wherein the binder resin further comprises at least one of repeating units represented by the following formulas (3) to (5)
(3)

[Chemical Formula 4]

[Chemical Formula 5]

.
[7] The method of claim 5, wherein the solvent is selected from the group consisting of ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, But are not limited to, ether, diethylene glycol dibutyl ether, methyl cellosolve acetate, ethyl cellosolve acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, methoxybutyl acetate, But are not limited to, ethyl acetate, propyl acetate, butyl acetate, pentyl acetate, benzene, toluene, xylene, methyl ethyl ketone, acetone, methyl amyl ketone, methyl isobutyl ketone, cyclohexanone, ethanol, methanol, , Cyclohexanol, ethylene Glycol, glycerin, and? -Butyrolactone. The composition for forming a white non-display portion pattern is preferably at least one selected from the group consisting of glycols, glycerin, and? -Butyrolactone.
The composition for forming a white non-indicator portion pattern according to claim 5, which comprises 0.5 to 10% by weight of a binder resin, 0.1 to 3% by weight of a thermal polymerization initiator, and 30 to 70% by weight of a solvent.
The composition for forming a white non-display portion pattern according to any one of claims 1 to 13, which is for roll printing.

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