TWI532796B - Composition for forming white patterns of non-display part - Google Patents

Description

Composition for forming a white pattern of a non-display portion

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

A micropattern for a semiconductor circuit device and a display device such as an LCD, a PDP or the like is formed by photolithography using a photoresist. Photolithography has the advantage of obtaining the desired precise pattern, however, it also assumes that multiple processes are required, a wide variety of materials are used to maximize the effectiveness of the photoresist, and coatings or other processes require a significant amount of Various disadvantages such as photoresist.

Therefore, in order to overcome the disadvantages of the photolithography method as described above, processes of the next generation such as roll printing or ink jet printing have been proposed in recent years for the formation of micropatterns.

Various methods including, for example, lithography, reverse lithography, reel printing or the like can be applied to the formation of micropatterns by roller printing, and can also be used for a wide range of applications, ie, the composition of filters (for example, R ( Red, G (green) and B (blue) and black matrix (BM) patterns, patterns used to form electrodes in thin film transistors (TFTs) or plasma display panels (PDPs), barrier rib materials Photolithography process (pattern transcription) and the like).

In recent years, a method for forming a pattern of a non-display portion on a touch screen panel by roll printing has been proposed.

Figure 1 depicts an image display device (cell phone) having a touch screen panel, wherein the display portion means a portion where the image is displayed, and the non-display portion means a week where the image is not displayed. Side part.

Such a non-display portion is the uppermost layer that the user will see, and the white ink used there must have shielding properties, high resistance, and excellent coloring characteristics.

Such a white ink generally uses a coloring agent containing titanium oxide. Titanium dioxide has a problem of a decrease in reflectance at a wavelength of 420 nm or shorter, so that a white colorant may be yellowed, and a brighter white color cannot be exhibited.

Korean Patent Publication No. 2010-39652 discloses a non-solvent type ultraviolet curable white ink composition.

Accordingly, it is an object of the present invention to provide a composition for forming a white pattern of a non-display portion that can have improved whiteness and thereby exhibit a brighter white color.

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

Further, it is another object of the present invention to provide a composition for forming a white pattern of a non-display portion, which composition has excellent heat resistance, and thereby can minimize color variation at high temperatures.

Furthermore, it is another object of the present invention to provide a composition for forming a white pattern of a non-display portion that is capable of avoiding the occurrence of cracks in the pattern.

Further, another object of the present invention is to provide a composition for forming a white pattern of a non-display portion having excellent printing quality.

The above object of the present invention is achieved by the following features:

(1) A composition for forming a white pattern of a non-display portion, the composition comprising: a white colorant and a calcium carbonate shielding agent.

(2) The composition according to the above (1), wherein the white colorant is selected from the group consisting of CI Pigment White Nos. 4, 5, 6, 6: 1, 7, 18, 18: 1, 19, 20, 22, 25 At least one of the groups consisting of 26, 27, 28, and 32.

(3) The composition according to the above (1), 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 according to the above (1), wherein the white colorant is contained in an amount of 10 to 60 wt.% with respect to the total weight of the composition, and the calcium carbonate shielding agent is 1 to 15 wt. The amount of % is included in it.

(5) The composition according to the above (1), further comprising a binder resin, a thermal polymerization initiator, and a solvent.

(6) The composition according to (1) above, wherein the binder resin is an acrylic resin.

(7) The composition according to the above (5), wherein the binder resin is a decane resin.

(8) The composition according to the above (7), wherein the binder resin comprises the repeating unit represented by the following Formula 1 and Formula 2:

(9) The composition according to the above (8), wherein the repeating unit represented by Formula 1 and Formula 2 is contained in a molar ratio of 1:5 to 9.

(10) The composition according to the above (8), wherein the repeating unit represented by Formula 1 and Formula 2 is contained in a range of 30 to 100 mol%.

(11) The composition according to the above (8), wherein the binder resin further comprises at least one of a plurality of repeating units represented by the following formulas 3 to 5:

(12) The composition according to the above (5), wherein the solvent comprises ethylene glycol monomethyl hydrazine, ethylene glycol single ethyl Ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether, diethylene glycol dibutyl ether, methoxy acetic acid Ethyl ester, ethoxyethyl acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, butyl methoxyacetate, amyl methoxyacetate, butyric acid, propyl acetate, Butyl acetate, amyl acetate, benzene, toluene, xylene, methyl ethyl ketone, acetone, methyl amyl ketone, methyl isobutyl ketone, cyclohexanone, ethanol, methanol, propanol, butanol, Hexanol, cyclohexanol, ethylene glycol, glycerol, and γ-butyrolactone.

(13) The composition according to the above (5), wherein the binder resin is based on the total weight of the composition It is contained in an amount of 0.5 to 10 wt.%, the thermal polymerization initiator is contained in an amount of 0.1 to 3 wt.%, and the solvent is contained in an amount of 30 to 70 wt.%.

(14) The composition according to the above (1) to (13), wherein the composition is for roll printing.

The composition for forming a white pattern of a non-display portion according to the present invention may exhibit a brighter white color with improved whiteness.

According to the composition of the present invention, it is possible to form a white pattern of a non-display portion having excellent shielding properties and a thinner thickness.

The composition for forming a white pattern of a non-display portion according to the present invention may improve heat resistance, and thus color variation may be minimized even when the pattern is exposed to a high temperature state for a long period of time.

According to the composition of the white pattern for forming a non-display portion according to the present invention, it is possible to avoid the occurrence of cracks in the pattern.

According to the composition of the white pattern for forming a non-display portion according to the present invention, it is possible to completely transfer the ink coated on the drum to the substrate during printing, and thereby provide excellent printing quality.

The above and other aspects, features and other advantages of the present invention will be more clearly understood from 1 is a perspective view depicting an image display device provided with a conventional touch screen panel in the related art.

The present invention discloses a composition for forming a white pattern of a non-display portion, the composition comprising: a white colorant and a calcium carbonate shielding agent, thereby exhibiting a brighter white color with improved whiteness, and forming A white pattern with excellent shielding properties and heat resistance.

Hereinafter, the present invention will be described in more detail.

The composition of the white pattern of the present invention for forming a non-display portion may comprise a white colorant, and a calcium carbonate shielding agent.

The white colorants are not particularly limited as long as they are any white inorganic pigments generally used in the related art, but may contain, for example, CI Pigment White No. 4, 5, 6, 6: 1, 7, 18, 18: 1, 19 , 20, 22, 25, 26, 27, 28, 32 or similar. Preferably, C.I. Pigment White No. 6 or White No. 22 can be used in terms of reflection efficiency and whiteness. These may be used singly or in combination of two or more thereof.

C.I. Pigment White No. 6 contains TiO 2 which is inexpensive, but has an excellent barrier ratio and a high refractive index to exhibit excellent reflection, and thus can be used as an effective white colorant. Preferably, the TiO 2 as described above may have a rutile structure.

If necessary, the white colorant may be subjected to various treatments such as resin treatment, surface treatment in which an acid group or a base group is introduced using a pigment derivative or the like, and grafting on the surface of the pigment by using a polymer compound or the like. Treatment; atomization treatment by using a sulfuric acid atomization method; cleaning treatment for removing impurities by using an organic solvent or water; ion impurity removal treatment by using an ion exchange method; or the like.

The white colorant may further comprise other white pigments within the scope not departing from the object of the present invention.

Calcium carbonate shielding agents can significantly improve whiteness and shielding properties by being used with white colorants. Therefore, when a calcium carbonate shielding agent is used to form a white pattern of a non-display portion (white matrix) of an image display device, a touch panel or the like, a pattern having excellent whiteness and shielding characteristics may be formed.

In order to provide the desired degree of excellent shielding properties, conventional ink compositions for forming white matrices are required to form a thick white matrix or to form a matrix of different colors thereon.

However, since the composition of the invention contains a calcium carbonate shielding agent, even if the pattern is formed in the film, it may have excellent whiteness and shielding properties. Therefore, according to the composition of the present invention, even if an additional matrix having a different color is not formed, or the pattern is formed to have a very thin thickness, a desired degree of excellent shielding characteristics can be obtained. Therefore, an image display device having a thin structure can be realized as compared with the conventional ink composition.

The particle size of the white colorant and the calcium carbonate shielding agent is not particularly limited, and may be appropriately selected to have excellent whiteness and shielding properties. For example, the white colorant and the calcium carbonate shielding agent may have an average diameter of 10 to 400 nm, and preferably may be 200 to 300 nm. When the average diameter thereof is from 10 to 400 nm, the effects of the coloring property, the refractive index, and the shielding property can be maximized.

The mixing ratio of the white colorant and the calcium carbonate shielding agent is not particularly limited to the range in which the above functions can be accomplished. For example, the white colorant and the calcium carbonate shielding agent may be mixed in a weight ratio of 9:1 to 5:5, preferably in a weight ratio of 9:1 to 7:3 and more preferably in a ratio of 9:1 to 8:2. The weight ratio is mixed. When the white colorant and the calcium carbonate shielding agent are mixed in a weight ratio of 9:1 to 5:5, the shielding properties and dispersion stability of the ink can be improved.

The content of the white colorant may be controlled depending on the desired color characteristics, for example, the white colorant may be contained in an amount of 10 to 60 wt.%, and preferably 30 to 60 wt.%, based on the total weight of the ink composition. The quantity is included. When the white colorant is contained in an amount of 10 to 60 wt.%, it is possible to provide excellent shielding characteristics while maintaining a favorable degree of printing quality.

The content of the calcium carbonate shielding agent may be controlled according to the desired color characteristics, for example, the calcium carbonate shielding agent may be contained in an amount of 1 to 15 wt.%, and preferably 5 to 12 wt., based on the total weight of the ink composition. The amount of % is included. When the calcium carbonate shielding agent is contained in an amount of 1 to 15 wt.%, the effect of improving the shielding properties can be maximized.

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

The binder resin can play the role of a support pattern, and the kind thereof is not particularly limited as long as it is any thermosetting resin generally used for the ink composition.

An example of the binder resin may include an acrylic resin having an ethylenically unsaturated group. The resin may comprise a copolymer prepared by copolymerization of a monomer having an acid group and another monomer copolymerizable therewith.

The monomer having an acid group may contain, for example, (meth)acrylic acid, crotonic acid, methylene succinic acid, maleic acid, fumaric acid, monomethyl maleic acid, isoprene sulfonic acid, benzene. Ethylene sulfonic acid or the like, which may be used singly or in combination of two or more thereof.

The monomer copolymerizable with the monomer having an acid group may include, for example, styrene, chlorostyrene, α-methylstyrene, vinylbenzene, methyl (meth)acrylate, ethyl (meth)acrylate, Butyl (meth)acrylate, benzyl (meth)acrylate, dimethylaminoethyl (meth)acrylate, isobutyl (meth)acrylate, tert-butyl (meth)acrylate, (meth)acrylic acid Cyclohexyl ester, isodecyl (meth) acrylate, 2-phenoxyethyl (meth) acrylate, tetrahydrofuran methyl (meth) acrylate, hydroxyethyl (meth) acrylate, 2-(meth) acrylate Hydroxypropyl ester, 2-hydroxy-3-chloropropyl (meth)acrylate, 4-hydroxybutyl (meth)acrylate, mercaptooctyloxy-2-hydroxypropyl (meth) acrylate, acrylic acid B Hexyl hexyl ester, 2-methoxyethyl (meth) acrylate, 3-methoxybutyl (meth) acrylate, (methyl) Ethoxyethylene diethylene glycol acrylate, methoxy triethylene glycol (meth) acrylate, methoxy tripropylene glycol (meth) acrylate, methoxy polyethylene glycol (meth) acrylate, Ethylene glycol (meth)acrylic acid phenoxy diethylene glycol ester, ethylene glycol (meth)acrylic acid p-nonylphenoxy polyethylene glycol ester, (meth)acrylic acid p-nonylphenoxy polypropylene glycol Ester, tetrafluoropropyl (meth)acrylate, 1,1,1,3,3,3-hexafluoroisopropyl (meth)acrylate, octafluoropentyl (meth)acrylate, (methyl) ) heptafluorodecyl acrylate, tribromophenyl (meth) acrylate, hydrogen hydride (meth) acrylate β-methoxyethyl ester, methyl-α-hydroxymethyl acrylate, ethyl-α - Hydroxymethacrylate, propyl-α-hydroxymethyl acrylate, butyl-α-hydroxymethyl acrylate, or the like, which may be used singly or in combination of two or more thereof.

Alternatively, the binder resin copolymer according to the present invention may be reacted with a reactive monomer to introduce an ethylenically unsaturated group. Examples of reactive monomers may include glycidyl (meth)acrylate, vinylbenzyloxypropyl ether, vinyl glycidyl ether, propylene glycidyl ether, 4-methyl-4,5-epoxy Pentane, γ-glycidoxypropyltrimethoxydecane, γ-glycidyloxypropylmethyldiethoxydecane, γ-glycidoxypropyltriethoxydecane, thiol-derived These may be used singly or in combination of two or more thereof.

The method for preparing the copolymer is not particularly limited, but may include an overall polymerization reaction, a solution polymerization reaction, an emulsion polymerization reaction, or a suspension polymerization reaction or the like which is generally used in the related art.

Alternatively, when the binder resin used in the present invention is an acrylic resin, the composition for forming a white pattern of the non-display portion according to the present invention may further comprise a polyfunctional monomer having an ethylenically unsaturated double bond.

The polyfunctional monomer having an ethylenically unsaturated double bond is a component that enhances the strength of the pattern, and may contain a monofunctional to a hexafunctional monomer. Specific examples of the aforementioned polyfunctional monomer may include: Monofunctional monomers such as nonylphenyl carbitol acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-ethylhexyl carbitol acrylate, 2-hydroxyethyl acrylate, N- Vinyl pyrrolidone or the like; difunctional monomer such as 1,6-hexanediol di(meth)acrylate, ethylene glycol di(meth)acrylate, neopentyl glycol di(meth)acrylate , triethylene glycol di(meth)acrylate, bis(acryloxyethyl)ether of bisphenol A, 3-methylpentanediol di(meth)acrylate, etc.; trifunctional monomer, for example Trimethylolpropane tri(meth)acrylate tri(meth)acrylate, pentaerythritol tri(meth)acrylate, etc.; tetrafunctional monomer such as pentaerythritol tetra(meth)acrylate; pentafunctional monomer, For example, dipentaerythritol penta (meth) acrylate; a hexafunctional monomer such as dipentaerythritol hexa(meth) acrylate, which may be used singly or in combination of two or more thereof.

The polyfunctional monomer having an ethylenically unsaturated double bond may be contained in an amount of 1 to 10 wt.% with respect to 100 wt.% of the total of the ink composition. Within the above range of contents, the desired pattern strength can be achieved.

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

If a decane resin is used as a binder resin, heat resistance can be improved, and color variation can be minimized even when the pattern is exposed to a high temperature for a long period of time.

The siloxane oxide resin may be a polymer or copolymer of a decane compound such as an oligomer or a polymer.

The kind of the decane compound contained and polymerized in the decane resin of the present invention is not particularly limited, but may include, for example, tetramethoxy decane, tetra-tetra(ethoxy) decane, trimethoxy decane, triethoxy decane. , methyl methoxy decane, methyl triethoxy decane, methyl triethoxy decane, methyl triisocyanate decane, methyl tris (ethoxy) decane, 3-aminopropyl trimethoxy decane, 3-aminopropyl ethoxy decane, 3-glycidoxy propyl trimethoxy decane, phenyl trimethoxy decane, phenyl triethoxy decane, phenyl triethoxy decane, phenyl triisocyanate decane, phenyl Tris(ethoxy) decane, dimethyl dimethoxy decane, dimethyl ethoxy decane, dimethyl diethoxy decane, dimethyl methoxy decane, dimethyl diisocyanate decane, Methyl methoxyisocyanate decane, dimethyl bis(acetoxy) decane, methyl phenyl dimethoxy decane, diphenyl methoxy decane, or the like.

In terms of improving heat resistance, preferably, the decane resin may include a repeating unit represented by the following Formula 1 and Formula 2.

The repeating unit represented by the above formula 1 and formula 2 can remarkably improve heat resistance. Therefore, when the pattern is formed by the ink composition of the present invention (to be applied to a display or the like), color variation which may occur at a high temperature in a subsequent process can be minimized. In addition, when the drum is coated with ink With proper viscosity, the ink coated on the drum is completely transferred to the substrate, and thus the printing quality can be improved, and a pattern having a fine shape and excellent flatness can be formed.

Further, when the repeating unit represented by the above formula 2 is used together with the repeating unit represented by Formula 1, thermal expansion and contraction can be avoided, and occurrence of cracks in the pattern can be minimized.

The inclusion ratio of the repeating unit represented by the above formulas 1 and 2 is not particularly limited, but may be included, for example, a molar ratio of 1:5 to 9, and preferably a molar ratio of 1:8 to 9. Be included. When the repeating unit represented by the above formulas 1 and 2 is included in a molar ratio of 1:5 to 9, the effect of improving heat resistance and avoiding cracks can be maximized.

Since the repeating unit represented by the above formula 1 or formula 2 can be appropriately mixed in the binder resin depending on the specific kind of other repeating units which can be simultaneously contained, the content thereof is not particularly limited, but the above formula 1 The repeating unit represented by or 2 may be included, for example, in the range of 30 to 100 mol%. When the repeating unit represented by the above formula 1 or formula 2 is contained therein in a content within the aforementioned range, the effect of improving heat resistance and avoiding cracks in the pattern can be maximized.

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

When the binder resin contains the repeating unit represented by the above formulas 3 to 5, the effect of improving the printing quality can be greatly increased.

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

The content of the binder resin is not particularly limited insofar as it can perform its function. For example, the binder resin may be contained in an amount of 0.5 to 10 wt.%, and preferably 1 to 5 wt.%, based on the total weight of the ink composition. When the content of the binder resin is within the above range, the occurrence of cracks in the pattern can be avoided, and the effect of improving heat resistance and printing quality can be maximized.

The polymerization initiator can be any thermal polymerization initiator well known in the related art, especially in comparison to other kinds of thermal polymerization initiators, including ruthenium cations and cations between the rutheniums. The ionic thermal polymerization initiator exhibits excellent stability and high stretchability characteristics over time, so that thermal polymerization of ruthenium cations and anions is contained between the ruthenium in consideration of the improvement of the adhesion between the object to be printed and the ink composition. The starter is more desirable. The polymerization initiator may be used singly or in combination of two or more.

Specific examples of the phosphonium cation contained in the polymerization initiator may include triphenylsulfonium salt, tris(4-methylphenyl)phosphonium salt, tris(4-isopropylphenyl)phosphonium salt, and tris(2,6-). Xylyl) phosphonium salt, tris(4-cyanophenyl)phosphonium salt, tris(4-chlorophenyl)phosphonium salt, diphenyl(4-hydroxyphenyl)phosphonium salt, methylphenyl (4-hydroxybenzene) Base salt, dibenzylphenyl phosphonium salt, dibenzyl (4-hydroxyphenyl) phosphonium salt, benzyl methyl (4-hydroxyphenyl) phosphonium salt, benzyl methyl (4-acetoxy) Phenyl) phosphonium salt, methyl (4-hydroxyphenyl) (2-methylphenyl) phosphonium salt, dimethyl (methoxy) phosphonium salt, dimethyl (ethoxy) phosphonium salt, dimethyl ( Propoxy) sulfonium salt, dimethyl (butoxy) phosphonium salt, dimethyl (octyloxy) phosphonium salt, dimethyl (octadecyloxy) phosphonium salt, dimethyl (isopropoxy group)鋶 salt, dimethyl (tert-butoxy) sulfonium salt, dimethyl (cyclopentyloxy) phosphonium salt, dimethyl (cyclohexyloxy) phosphonium salt, dimethyl (fluoromethoxy) hydrazine Salt, dimethyl(2-chloroethoxy)phosphonium salt, dimethyl(3-bromopropoxy)phosphonium salt, dimethyl(4-cyanobutoxy)phosphonium salt, dimethyl (8-nitrate) Octyloxy) phosphonium salt, dimethyl (18-trifluoromethyloctadecyloxy) phosphonium salt, dimethyl (2-hydroxyisopropyl) Yl) sulfonium salts, dimethyl (tris (trichloromethyl) methyl) sulfonium salt, or the like. Among these, triphenylsulfonium salt, tris(4-methylphenyl)phosphonium salt, benzylmethyl(4-hydroxyphenyl)phosphonium salt, benzylmethyl (4-acetoxyphenyl) are preferably used. a phosphonium salt and a methyl (4-hydroxyphenyl) (2-methylphenyl) phosphonium salt, and more preferably a tris(4-methylphenyl) phosphonium salt, a benzyl methyl group (4-acetoxybenzene) a sulfonium salt and a benzylmethyl (4-hydroxyphenyl) phosphonium salt.

Further, the kind of the anion contained in the polymerization initiator is not particularly limited, but may include, for example, a halogen ion such as F ^- , Cl ^- , Br ^- , I ^- etc.; OH ^- ; ClO ₄ ^- ; Acid ions, such as FSO ₃ ^- , ClSO ₃ ^- , CH ₃ SO ₃ ^- , C ₆ H ₅ SO ₃ ^- , CF ₃ SO ₃ ^-, etc.; sulfate ions, such as HSO ₄ ^- , SO ₄ ^2-, etc.; carbonate ions, For example, HCO ₃ ^- , CO ₃ ^2-, etc.; phosphate ions such as H ₂ PO ₄ ^- , HPO ₄ ^2- , PO ₄ ^3-, etc.; fluorophosphate ions such as PF ₆ ^- , PF ₅ OH ^- etc.; borate ions, For example, BF ₄ ^- , B(C ₆ F ₅ ) ₄ ^- , B(C ₆ H ₄ CF ₃ ) ₄ ^-, etc.; AlCl ₄ ^- ; BiF ₆ ^- ; fluoroantimonic acid ions, such as SbF ₆ ^- , SbF ₅ OH ^- Etc.; fluoroarsenic acid ions, such as ASF ₆ ^- , AsF ₅ OH ^- and the like.

The content of the thermal polymerization initiator is not particularly limited insofar as it can perform its function. For example, the thermal polymerization initiator may be included in an amount of 0.1 to 3 wt.%, and preferably 0.3 to 1.5 wt.%, based on the total weight of the ink composition. When the content of the thermal polymerization initiator is in the range of 0.1 to 3 wt.%, a favorable degree of polymerization reaction and coating characteristics can be attained, and further, the adhesion to the object to be printed can be effectively improved.

The solvent may include, for example, an ethylene glycol monoalkyl ether, such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, and B, in consideration of solubility, dispersion, coating characteristics, and the like of the colorant. a diol monobutyl ether or the like; a diethylene glycol dialkyl ether such as diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether, diethylene glycol dibutyl ether, etc.; Glycol alkyl ether acetate, such as 2-methoxyethyl acetate, ethoxyethyl acetate, etc.; alkylene glycol alkyl ether acetate, such as propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate , propylene glycol monopropyl ether acetate, etc.; alkoxyalkyl acetate, such as butyl methoxyacetate, amyl methoxyacetate; alkyl acetate, such as butyric acid, propyl acetate, butyl acetate , amyl acetate, etc.; aromatic hydrocarbons, such as benzene, toluene, xylene, etc.; ketones, such as methyl ethyl ketone, acetone, methyl amyl ketone, methyl isobutyl ketone, cyclohexanone, etc.; alcohols , for example, ethanol, methanol, propanol, butanol, hexanol, cyclohexanol, ethylene glycol, glycerin, etc.; cyclic esters, such as γ-butyrolactone, etc. Used alone or in a combination of two or more binding.

The content of the solvent is not particularly limited insofar as it can perform its function. example For example, the solvent may be contained in an amount of 30 to 70 wt.%, and preferably 40 to 60 wt.%, based on the total weight of the ink composition. When the content of the solvent is in the range of 30 to 70 wt.%, the ink composition can maintain favorable coloring power, and printing can be easily performed.

If desired, the composition of the white pattern used to form the non-display portion can be used in conjunction with at least one additive within the scope of the present invention, such as an interface, for those skilled in the art. An active agent, a filler, a hardener, an adhesion enhancer, an antioxidant, a UV absorber, a dispersant, or the like.

The kind of the surfactant is not particularly limited, but may include, for example, a cerium oxygen surfactant, a fluorinated surfactant, or a mixture thereof.

The 矽 oxygen surfactant may include, for example, BYK-077, BYK-085, BYK-300, BYK-301, BYK-302, BYK-306, BYK-307, BYK-310, BYK-320, BYK-322, BYK -323, BYK-325, BYK-330, BYK-331, BYK-333, BYK-335, BYK-341v344, BYK-345v346, BYK-348, BYK-354, BYK-355, BYK-356, BYK-358 , BYK-361, BYK-370, BYK-371, BYK-375, BYK-380, BYK-390, or the like, which are manufactured by BYK-Chemie Co., Ltd. and can be used alone or in Two or more of them are used in combination.

Fluorinated surfactants may include, for example, F-114, F-177, F-410, F-411, F-450, F-493, F-494, F-443, F-444, F-445, F -446, F-470, F-471, F-472SF, F-474, F-475, F-477, F-478, F-479, F-480SF, F-482, F-483, F-484 , F-486, F-487, F-172D, MCF-350SF, TF-1025SF, TF-1117SF, TF-1026SF, TF-1128, TF-1127, TF-1129, TF-1126, TF-1130, TF -1116SF, TF-1131, TF1132, TF1027SF, TF-1441, TF-1442, TF-1535, these are from the Great Japan Ink Chemical Industry DIC (DaiNippon Ink &Chemicals); S-381, S-383, S-393, SC-101, Sc-105, KH-40, SA-100, S-611, S-386, S-221, S-231, S-243, S-420, S-651, these are manufactured by AGC Seimi Chemicals Co., Ltd. These may be used singly or in combination of two or more thereof.

The composition for forming a white pattern of a non-display portion according to the present invention can be used in various printing processes such as screen printing, inkjet printing, and roll printing to form a pattern having excellent whiteness and shielding characteristics. type. Among these, the composition of the invention is preferably used as an ink composition for roller printing in view of forming a fine and precise pattern.

In the following, preferred embodiments will be described to more specifically understand the present invention. However, it is obvious to those skilled in the art that these embodiments are provided for the purpose of illustration, and the invention is not limited by the scope of the appended claims, and various modifications and changes are possible without departing from the invention. The scope and spirit of the invention, as well as the foregoing modifications and variations, are intended to be included in the invention as defined by the appended claims.

example Example 1

A grinding base comprising 50 wt.% of C.I. Pigment White No. 6, 10 wt.% of calcium carbonate, 2 wt.% of a polyester dispersant, and propylene glycol monomethyl ether acetate as a remainder was prepared. Next, 80 wt.% of a prepared grinding base, 3 wt.% of methacrylic acid, and a copolymer of benzyl methacrylate (having a weight average molecular weight (MW) of 15,000 as a binder resin) were mixed and stirred at 23 ° C. 0.5 wt.% of SI-B3A (Sam-shin Chemical Co., Ltd.) of the thermal polymerization initiator, 0.5 wt.% of F-475 (DIC) as a surfactant, and propylene glycol as the remainder and solvent Methyl ether acetate. Thereafter, the mixture was agitated for 3 hours to prepare a non-display portion for forming. The composition of the white pattern.

Example 2

A composition for forming a white pattern of a non-display portion was prepared according to the same procedure as described in Example 1, except that a grinding substrate containing 30 wt.% of C.I. Pigment White No. 6 and 15 wt.% of calcium carbonate was used.

Example 3

A composition for forming a white pattern of a non-display portion was prepared according to the same procedure as described in Example 1, except that a grinding substrate containing 15 wt.% of C.I. Pigment White No. 6 and 18 wt.% of calcium carbonate was used.

Example 4

A composition for forming a white pattern of a non-display portion was prepared according to the same procedure as described in Example 1, except that a grinding substrate containing 50 wt.% of CI Pigment White No. 6 and 0.5 wt.% of calcium carbonate was used. .

Example 5

A composition for forming a white pattern of a non-display portion was prepared according to the same procedure as described in Example 1, except that a grinding substrate containing 60 wt.% of C.I. Pigment White No. 6 and 25 wt.% of calcium carbonate was used.

Example 6

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

Example 7 uses butyl acetate as a solvent in addition to 3 wt.% of a binder resin containing a repeating unit represented by Formula 1, Formula 2, Formula 3, and Formula 5 having a molar ratio of 2:6:1:1. A composition for forming a white pattern of a non-display portion was prepared according to the same procedure as described in Example 1, except that it had a weight average molecular weight (MW) of 6,000. Comparative example 1

The composition for forming a white pattern of the non-display portion was prepared according to the same procedure as described in Example 1, except that the calcium carbonate shielding agent was not included.

Comparative example 2

The composition for forming a white pattern of the non-display portion was prepared according to the same procedure as described in Example 7, except that the calcium carbonate shielding agent was not included.

Comparative example 3

The composition for forming a white pattern of the non-display portion was prepared according to the same procedure as described in Example 1, except that barium sulfate was contained and the calcium carbonate shielding agent was not included.

Experimental example (1) Assessment of whiteness

Each of the plurality of ink compositions prepared in the examples and comparative examples was applied to a glass substrate using a spin coater. Next, the coated substrate was prebaked at 100 ° C for 120 seconds, and then the treated substrate was allowed to stand at room temperature for 3 minutes. Thereafter, the substrate was heated again and hardened at 230 ° C for 30 minutes to form a coating film, and then the L* value of the formed coating film was measured with a color difference meter (I-5, X-rite Co., Ltd.) to evaluate the whiteness. .

(2) Evaluation of shielding characteristics

An example of spin coating experiment for a composition for forming a black matrix, which comprises an acrylic resin After the coating film formed in (1) was brought to a thickness of 1.5 μm, the coating film was heated and hardened at 230 ° C for 30 minutes to form a black matrix. Thereafter, the surface opposite to the surface on which the black matrix was formed was visually observed to evaluate the shielding characteristics according to the following criteria.

◎: The black matrix is completely invisible, and it presents a completely white color.

○: The black matrix is slightly visible, which exhibits excellent whiteness

△: The black matrix is visible, and it exhibits a gray color.

X: The black matrix is completely visible in black, which is dark gray

The results are shown in Table 1 below.

Referring to Table 1 above, it can be seen that the coating film formed by the composition for forming a white pattern of the non-display portion prepared in Examples 1 to 7 has a very excellent whiteness, reaching an L* value of 96 to 98. Degree.

Furthermore, the coating films associated with Examples 1 to 7 have significantly improved shielding properties, thereby significantly reducing the visibility of the black color of the black matrix layer formed behind the white matrix.

However, in order to form a non-display portion prepared in Comparative Examples 1 to 3 The coating film formed by the composition of the white pattern has a lower measured whiteness to such an extent that the L* value is 90 or less.

Further, the coating films relating to Comparative Examples 1 to 3 have a reduced shielding property, whereby the black color of the black matrix formed after the white matrix is visible and exhibits gray or dark gray.

Claims (11)

A white pattern composition for forming a non-display portion, comprising: a white colorant, a calcium carbonate shielding agent, a binder resin, a thermal polymerization initiator, and a solvent; wherein the composition is relative to the composition The total amount of the white colorant is included in an amount of 10 to 60 wt.%, and the calcium carbonate shielding agent is contained in an amount of 1 to 15 wt.%, and the binder resin is 0.5 to 10 wt.%. The amount is contained, the thermal polymerization initiator is contained in an amount of 0.1 to 3 wt.%, and the solvent is contained in an amount of 30 to 70 wt.%. The composition of claim 1, wherein the white colorant is selected from the group consisting of CI Pigment White Nos. 4, 5, 6, 6: 1, 7, 18, 18: 1, 19, 20, 22, At least one of the groups consisting of 25, 26, 27, 28, and 32. The composition of claim 1, wherein the white colorant and the calcium carbonate shielding agent are mixed at a weight ratio of 9:1 to 5:5. The composition of claim 1, wherein the binder resin is an acrylic resin. The composition of claim 1, wherein the binder resin is a monooxane resin. The composition according to claim 5, wherein the binder resin comprises the repeating unit represented by the following formula 1 and formula 2: The composition according to claim 6, wherein the repeating unit represented by Formula 1 and Formula 2 is contained in a molar ratio of 1:5 to 9. The composition according to claim 6, wherein the repeating unit represented by Formula 1 and Formula 2 is contained in a range of 30 to 100 mol%. The composition according to claim 6, wherein the binder resin further comprises at least one of a plurality of repeating units represented by the following formulas 3 to 5: The composition of claim 1, wherein the solvent comprises ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, diethylene glycol diethylene glycol Ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether, diethylene glycol dibutyl ether, methoxyethyl acetate, ethoxyethyl acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, Propylene glycol monopropyl ether acetate, butyl methoxyacetate, amyl methoxyacetate, butyric acid, propyl acetate, butyl acetate, amyl acetate, benzene, toluene, xylene, methyl ethyl ketone, acetone Methyl amyl ketone, methyl isobutyl ketone, cyclohexanone, ethanol, methanol, propanol, butanol, hexanol, cyclohexanol, ethylene glycol, glycerol, and γ-butyrolactone. The composition of any one of claims 1 to 10, wherein the composition is for roller printing.