KR101758051B1 - Stripping composition for color filter - Google Patents

Abstract

The release liquid composition for a color filter according to the present invention comprises an alcohol-based solvent selected from a cyclic alcohol having 3 to 20 carbon atoms, an aromatic alcohol, and a heterocyclic alcohol containing at least one element selected from N, S, and O, Type adsorbent and efficiently removes the acrylic film and the color resist film of the color filter in a short period of time and minimizes the damage of the insulating film or the metal wiring exposed during the removing process so that the TFT array substrate can be recycled from the defective substrate can do.

Description

TECHNICAL FIELD [0001] The present invention relates to a stripping composition for a color filter,

The present invention relates to a peeling liquid composition useful for recycling a defective substrate generated during a color filter process of a TFT-LCD, and relates to a peeling liquid composition capable of efficiently removing an acrylic film and a color resist.

The manufacturing process of a color filter for forming color resist pixels of red, green and blue in the process of manufacturing a liquid crystal display (LCD) is a black pigment dispersing photoresist called organic BM A black matrix serving as a boundary of pixels is formed through a coating process, an exposure process, a development process, and a thermal curing process, and is coated with a red pigment, a green pigment and a blue pigment, The thermal curing process is repeated to form a color filter.

The above-described method is complicated. In order to simplify the manufacturing process of a conventional liquid crystal display device, a new concept of a "color filter on TFT (TFT) (COT) type" in which a color filter is formed on a thin film transistor array substrate And a color resin is formed. This COT process can reduce costs by reducing assembly margin, improving aperture ratio, and improving productivity (tact time).

In recent years, as shown in FIG. 1, except for a BM serving as a pixel boundary in order to increase a TFT-LCD aperture ratio, a red, green, and blue color resist is formed on a circuit board and a color filter A transparent organic insulating material such as an acrylic resin is applied to form a color filter protective film 60 (10 in FIG. 1: glass substrate, 15: gate, 20: gate insulating film, 25: semiconductor, 27 : S / D electrode, 30: insulating film, 35: pixel, 40: Green filter, 50: Red filter, 60: acrylic film).

Patent Publication No. 2007-0075277 discloses a color resist stripping liquid composition comprising a hydroxide compound, an alkylene glycol ether and an alkylene glycol, a hydroxylamine, an alkoxyalkylamine and water, but an alkylene glycol ether And as an additive of an alkylene glycol solvent and an alkoxyalkylamine, the removal rate of the acrylic film and the photosensitizer for the color filter is low, and there is a problem that the lower film (insulating film and metal film) exposed after the removal is damaged.

Korean Patent Publication No. 2007-0075277 (published on July 18, 2007) Korean Patent Publication No. 2010-0033006 (published on March 29, 2010) Korean Patent Publication No. 2010-0009409 (published on January 21, 2010) Korean Patent Publication No. 2009-0019299 (published on February 25, 2009)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a release liquid composition for a color filter capable of efficiently removing an acrylic film and a photosensitizer of a color filter.

Another problem to be solved by the present invention is to provide a method for recycling a TFT array substrate by removing an acrylic film and a photosensitive agent from a defective substrate using a peeling liquid composition for a color filter.

To solve the above problems, a peeling liquid composition for a color filter comprises an alcohol-based alcohol selected from a cyclic alcohol having 3 to 20 carbon atoms, an aromatic alcohol, and a heterocyclic alcohol containing at least one element selected from N, S, And may be a release liquid composition for a color filter containing a solvent and a polymeric adsorbent.

The polymeric adsorbent may be represented by the following formula (1).

[Chemical Formula 1]

Wherein X and Y are each hydrogen, alkyl having 1 to 6 carbon atoms, -COOM ₃ , X or Y is -COOM ₂ and an anhydride ring, Z is hydrogen, alkyl having 1 to 6 carbon atoms, or CH ₂ COOM ₃ , M ₂ and M ₃ are each at least one selected from the group consisting of hydrogen, an alkali metal, an ammonium and an organic amine group,

R ₁ and R ₂ are each hydrogen or alkyl having 1 to 6 carbon atoms, R ₃ is an alkylene group having 2 to 4 carbon atoms,

m is an integer of 1-100, n is an integer of 0-4, and a and b are each an integer of 1-20.

According to one embodiment, the polymeric adsorbent may have a number average molecular weight of 500 to 50,000, and may be composed of a polyacrylate-based anchor group and a polyallyl alcohol ethoxylate-based polymer group.

According to one embodiment, the alcohol-based solvent may include an aromatic alcohol represented by the following formula (2).

(2)

In Formula 2,

R is at least one substituent selected from the group consisting of hydrogen or an alkyl group having 2 to 4 carbon atoms, and c is an integer of 0 to 5.

According to one embodiment, the aromatic alcohol may be at least one selected from the group consisting of phenylmethanol, methylphenylmethanol, ethylphenylmethanol, propylphenylmethanol, isopropylmethanol and butylphenylmethanol.

According to one embodiment, the alcohol-based solvent may include a heterocyclic alcohol having a structure represented by the following formula (3).

 (3)

In Formula 3,

X is at least one element selected from N, S, and O, and d is an integer of 1 to 4.

According to one embodiment, the release liquid composition may comprise 10 to 50 parts by weight of an alcoholic solvent and 0.5 to 10 parts by weight of a polymeric adsorbent based on 100 parts by weight of the total composition.

According to one embodiment, the heterocyclic alcohol is selected from the group consisting of tetrahydrofuranylmethanol, tetrahydrofuranylethanol tetrahydrofuranylpropanol, tetrahydrofuranylbutanol, tetrahydrothiophenylmethanol, tetrahydrofurfuryl alcohol, tetrahydrofuryl ethanol , Tetrahydrofuryl propanol, tetrahydrofuryl butanol, tetrahydrothiophenyl ethanol, tetrahydrothiophenyl propanol, tetrahydrothiophenyl butanol, pyrrolidinyl methanol, pyrrolidinyl ethanol, pyrrolidinyl propanol, and pyrrolidinyl butanol And the like.

According to one embodiment, the amine structure-based release promoter that does not contain an oxygen atom in the molecular structure may further include 1 to 20 parts by weight based on 100 parts by weight of the composition.

According to one embodiment, the amine-based exfoliating promoter may include a structure represented by the following general formula (4) or (5).

[Chemical Formula 4]

E is an integer of 1 to 4,

[Chemical Formula 5]

F is an integer of 1 to 6;

According to one embodiment, the amine-based release promoter is selected from the group consisting of diethylenetriamine, triethylenetetramine, tetraethylenepentamine, piperazinemethylamine, pyreazine ethylamine, piperazinpropylamine, piperazinebutylamine, Amine, piperazine pentylamine, piperazine hexylamine, and the like.

According to one embodiment, the release liquid composition for a color filter comprises 10 to 50 parts by weight of an alcoholic solvent and 0.5 to 10 parts by weight of a polymeric adsorbent based on 100 parts by weight of the composition, further comprising 1 to 20 parts by weight of an alkali compound; 5 to 30 parts by weight of a water-soluble amine; 1 to 20 parts by weight of at least one selected from alkylene glycol ethers, alkylene glycols, dialkylene glycol dialkyl ethers and alkylene glycol dialkyl ethers; And 0 to 5 parts by weight of a nonionic surfactant.

The alkali compound may be selected from inorganic alkali hydroxides, ammonium hydroxides, alkylammonium hydroxides having 1 to 6 carbon atoms, and phenylalkylammonium hydroxides having alkyl groups having 1 to 6 carbon atoms.

The water-soluble amine may be selected from alkanolamine having 2 to 10 carbon atoms or alkoxyamine having 2 to 15 carbon atoms.

In order to solve the other problems of the present invention, it is possible to provide a method of recycling a TFT array substrate by removing an acrylic resin and a color resist from a defective substrate using the stripper composition for a color filter.

The stripper liquid composition for a color filter according to the present invention efficiently removes an acrylic film and a color resist film in a short time to reuse a TFT array substrate in a defective substrate generated in a COT process, Damage to the metal wiring can be minimized.

1 is a structural view of a color filter of a liquid crystal display device.
2 is a photograph of a substrate on which an acrylic film and a color resist are removed using the peeling solution of Example 1. Fig.
3 is a photograph of the lower film of the substrate using the peeling solution according to Comparative Example 5. Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed embodiments, but is capable of many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Hereinafter, the release liquid composition for a color filter for a TFT LCD according to the present invention will be described in detail.

In the color filter stripping solution composition according to the present invention,

An alcoholic solvent selected from cyclic alcohols having 3 to 20 carbon atoms, aromatic alcohols, and heterocyclic alcohols containing at least one element selected from N, S, and O, and a polymeric adsorbent.

According to a preferred embodiment of the present invention, the polymeric adsorbent may be represented by the following general formula (1).

 [Chemical Formula 1]

Wherein X and Y are each hydrogen, methyl, -COOM ₃ or X or Y forms -COOM ₂ and an anhydride ring, Z is hydrogen, methyl or CH ₂ COOM ₃ , M ₂ and M ₃ are each hydrogen, an alkali metal , Ammonium, organic amine group,

R ₁ and R ₂ are each hydrogen or methyl, R ₃ is an alkylene group having 2-4 carbon atoms,

m is an integer of 1-100, n is an integer of 0-4, and a and b are integers of 1-20.

Wherein the polymeric adsorbent comprises polyacrylate and an anchor group capable of adsorbing to an insulating film and polyallyl alcohol ethoxylate and is a polymer group comprising a polymer group capable of inhibiting corrosion by protecting an insulating film and a metal wiring from an alkaline solvent, Acrylate-polyallyl alcohol ethoxylate-based polymer.

In the removing liquid composition for a color filter using the polymeric adsorbent, in the step of removing an acrylic film and a color resist used as an overcoat of a color filter from a defective substrate produced after the COT process, a lower exposed insulating film It is possible to reduce the damage due to the strongly alkaline peeling liquid by adsorption-protection as the polymer adsorbent contained in the peeling liquid, and the TFT array substrate can be efficiently separated and recovered from the defective substrate and recycled.

According to one embodiment of the present invention, the polymeric adsorbent may have a number average molecular weight of 500 to 50,000, and may be contained in an amount of 0.5 to 10 parts by weight, preferably 0.5 to 5 parts by weight, based on 100 parts by weight of the release liquid composition Can be. If the content of the polymeric adsorbent is less than 0.5 part by weight, the lower insulating layer may not be effectively protected from the alkaline stripper, and the lower insulating layer may be damaged. When the content of the polymeric adsorbent is less than 10 weight% If the amount is more than the above amount, it may lead to defective deposition such as poor deposition due to the adsorption of the corrosion inhibitor.

The alcohol-based solvent containing the aromatic alcohol may have a structure represented by the following formula (2).

(2)

In the above formula,

R is at least one substituent selected from the group consisting of hydrogen and an alkylene group having 2 to 4 carbon atoms,

and c is an integer of 0 to 5.

The aromatic alcohols according to the present invention can be used without limitation as long as they are commonly used in the art, but are preferably selected from the group consisting of phenylmethanol, methylphenylmethanol, ethylphenylmethanol, propylphenylmethanol, isopropylmethanol and butylphenylmethanol It may be one or more aromatic alcohols.

The heterocyclic alcohol may have a structure represented by the following formula (3).

 (3)

In Formula 3,

X is at least one element selected from N, S, and O, and d is an integer of 0 to 5.

The heterocyclic alcohols according to the present invention can be used without limitation as long as they are ordinarily used in the art, but preferable examples thereof include tetrahydrofuranylmethanol, tetrahydrofuranylethanol tetrahydrofuranylpropanol, tetrahydrofuranylbutanol, tetra Examples of the organic solvent include methanol, ethanol, isopropanol, isopropanol, isopropanol, isopropanol, isopropanol, isopropanol, isopropanol, isobutanol, isobutanol, tetrahydrofuryl alcohol, tetrahydrofuryl alcohol, tetrahydrofuryl ethanol, tetrahydrofuryl propanol, tetrahydrofurylbutanol, tetrahydrothiophenylethanol tetrahydrothiophenylpropanol, Ethanol, propanol, isopropanol, isopropanol, isopropanol, isopropanol, isopropanol, butanol, isobutanol,

The aromatic alcohol and the heterocyclic alcohol may be used alone or in combination. According to one embodiment of the present invention, the alcohol-based solvent may be mixed and used. The content of the alcoholic solvent containing the aromatic alcohol and the heterocyclic alcohol may be 10 to 50 parts by weight, preferably 20 to 35 parts by weight, based on 100 parts by weight of the release agent composition.

By using a solvent selected from the aromatic alcohols or heterocyclic alcohols as described above, the release agent composition for a color filter can be used as a polar solvent, such as alkylene glycol ethers and dimethyl sulfoxide, which are conventionally used, The photoresist for a film and a color filter is excellent in penetration and dissolution power and can be removed within a short time.

According to an embodiment of the present invention, the amine-based release promoter may be an amine-based compound having a structure in which no oxygen is present in the molecular structure represented by the following general formula (4) or (5)

[Chemical Formula 4]

E is an integer of 1 to 10,

[Chemical Formula 5]

F is an integer of 1 to 6;

The amine-based exfoliation promoter represented by Formula 4 can promote the decomposition of the acrylic film and the photosensitizer for the color filter, and the amine-based exfoliation promoter represented by Formula 5 can contain primary, secondary, and tertiary amines And the decomposition of the removed acrylic film and the color resist can be promoted and damage to the lower film can be prevented. The compounds represented by Chemical Formulas 4 and 5 are amine components composed of a plurality of N (nitrogen atoms), maximizing the peeling performance by the alkali, and protecting the metal surface by a plurality of -N groups, The decomposition of the photoresist for the removed acrylic film and the color filter can be promoted.

The peelable solution according to the present invention may contain 1 to 20 parts by weight of the amine-based peel accelerating agent based on 100 parts by weight of the peel-off solution composition, wherein the amine-based peel accelerator contains 1 weight% When the amount of the polar organic solvent is less than 20 parts by weight, the amount of the polar organic solvent is decreased and the peeling performance is lowered.

The amine-based release promoter may be at least one selected from the group consisting of diethylenetriamine, triethylenetetramine, tetraethylenepentamine, piperazinemethylamine, pyrrolazineethylamine, piperazinepropylamine, piperazinebutylamine, piperazinepentylamine, ≪ / RTI >

The water used in the present invention is preferably pure water filtered through an ion exchange resin, and more preferably, ultra pure water having a resistivity of 18 M? Or higher is used. The amount of water used may be included as a residual amount of the release liquid composition, and preferably 5 to 70 parts by weight based on 100 parts by weight of the release liquid composition. If the amount of water is less than 5 parts by weight, the composition of the composition changes at the process temperature, and inorganic alkali ions are precipitated to cause a deterioration of the time of use of the peeling liquid composition for a color filter. When the content of water exceeds 70 parts by weight There is a problem that the loss of the peeling liquid composition for the color filter increases due to evaporation of water at the lower process temperature.

The peeling solution for a color filter according to the present invention may further contain at least one compound selected from water-soluble amines, alkylene glycol ethers, alkylene glycols, dialkylene glycol dialkyl ethers and alkylene glycol dialkyl ethers, An activator and an inorganic salt compound.

The release liquid composition according to the present invention may further comprise a water-soluble amine. As the water-soluble amine, alkanolamine, alkoxyamine or a mixture thereof may be used.

The water-soluble amine may be an alkanolamine having 1 to 10 carbon atoms. Specific examples thereof include monomethanolamine, methylmethanolamine, monoethanolamine, diethanolamine, triethanolamine, monopropanolamine, 2-aminoethanol, 2- Ethylamino) ethanol, 2- (methylamino) ethanol, N-methyldiethanolamine, N, N-dimethylethanolamine, N, N-diethylaminoethanol, 2- Amino-1-propanol, 4-amino-1-butanol, and dibutanolamine, but is not limited thereto no.

The water-soluble amine may be an alkoxyalkylamine having 2 to 15 carbon atoms. Specific examples thereof include (butoxymethyl) diethylamine, (methoxymethyl) diethylamine, (methoxymethyl) (Methoxymethyl) aminoethane, methyl (methoxymethyl) aminomethane, methyl (methoxymethyl) dimethylamine, But are not limited to, ethanol, methyl (butoxymethyl) amino ethanol, and 2- (2-aminoethoxy) ethanol.

The water-soluble amine may further be included in an amount of 5 to 30 parts by weight based on the total amount of the release agent.

In the release liquid composition according to the present invention, the alkali compound may be an inorganic alkali hydroxide, an ammonium hydroxide, an alkylammonium hydroxide having an alkyl group having 1 to 4 carbon atoms and a phenylalkylammonium hydroxide having an alkyl group having 1 to 4 carbon atoms And a lockside.

In addition, since the alkaline compound has an unstable property of inorganic alkali hydroxide and phenylalkylammonium hydroxide, it may be preferable to use it in the form of being dissolved in water.

Specific examples of the inorganic alkali hydroxide used in the exfoliation solution according to the present invention include lithium hydroxide, sodium hydroxide, potassium hydroxide, and mixtures thereof. But it is not limited thereto. The alkylammonium hydroxide having an alkyl group having 1 to 4 carbon atoms is preferably selected from the group consisting of tetraethyl ammonium hydroxide, tetramethyl ammonium hydroxide, tetrabutyl ammonium hydroxide, , And mixtures thereof, but are not limited thereto. In addition, benzyl trimethyl ammonium hydroxide may be preferably used as the phenylalkyl ammonium hydroxide having an alkyl group having 1 to 4 carbon atoms.

The alkali compound may be used in an amount of 1 to 20 parts by weight, preferably 3 to 15 parts by weight, based on the whole stripper composition. If the content of the alkaline compound is less than 1 part by weight, the ability to penetrate into the polymer component constituting the color resist is poor and it is difficult to completely remove the color resist. If the amount is more than 20 parts by weight, Problems may appear.

The compound selected from the group consisting of alkyleneglycol ether and alkyleneglycol is excellent in the dissolving power and ability to lower the surface tension of the color resist, The color resist is easily stripped, and the function of dissolving the binder, polymer, etc. of the striped color resist is achieved. The amount of the alkylene glycol ether to be used may be 1 to 20 parts by weight, preferably 5 to 12 parts by weight based on the composition. If the amount is less than 1 part by weight, the color resist can not be completely removed. If the amount is more than 20 parts by weight, the polarity of the peeling liquid is deteriorated and the performance of dissolving the acrylic resin as the overcoating material is deteriorated.

The alkylene glycol ethers to be used in the present invention include ethyleneglycol monobutylether, diethylene glycol monobutylether, triethyleneglycol monobutylether, ethyleneglycol monomethylether, ethyleneglycol monobutylether, monomethylether, diethyleneglycol monomethylether, triethyleneglycol monomethylether and ethyleneglycol monoethylether. The alkylene glycols may be ethylene glycol, diethylene glycol monomethyl ether, Diethylene glycol, triethylene glycol, hexylene glycol, glycerol, or a mixture thereof may be used as the organic solvent.

The surfactant can be used to increase wettability with respect to the hydrophobic interlayer insulating film and to prevent the residue removing liquid from reaching evenly depending on the shape of the pattern. As the nonionic surfactant that can be used in the present invention, (CH ₂ CH ₂ O) q R "or -R'O (CH ₂ CH ₂ O) q R" (where R "represents a hydrogen atom, an alkyl group, An alkyl group having 1 to 10 carbon atoms; R 'is a hydrocarbon group of 1 to 20 carbon atoms in which a hydrogen atom may be substituted with a fluorine atom; and q is an integer of 0 to 20). as _{is, C 9 F 17 O (CH} 2 CH 2 O) r CH 3 (r is an integer of 2 to _{30), C 9 H 19 Ph} (CH 2 CH 2 O) 1 0H, C 12 H 25 O ( _{CH 2 CH 2 O) 9 H} , C 9 H 19 PhO (CH 2 CH 2 O) 1 0H, C 9 H 19 PhO (CH 2 CH 2 O) 5 H, C 8 H 17 PhO (CH 2 CH 2 O ) ₃ H, _{C 8 H 17 Ph (CH 2} CH 2 O) 1 0H (Ph is a phenylene group) and the like, the non-ionic surfactant may be included as part of 0 to 5 parts by weight based on 100 parts by weight of the removing solution.

The inorganic salt used in the present invention can be expected to have a synergistic effect of removing the resist when used together with the above hydroxide compound. Particularly, when the inorganic salt is used together with the alkyl ammonium hydroxide and the phenylalkyl ammonium hydroxide, the penetration and swelling properties of the acrylic resin and the polyimide resin as the overcoating materials are increased, and the removal time can be significantly shortened . The inorganic salt used in the present invention may be selected from the group consisting of potassium acetate, potassium nitrate, potassium carbonate, potassium pyrophosphate, potassium oleate, potassium benzoate potassium benzoate, potassium laurate, potassium tert-butoxide, potassium sulfate, potassium sorbate, potassium aminobenzoate, potassium di Potassium persulfate, potassium disulfate, potassium cyanate, potassium sulfide, potassium xylene sulfonate, sodium xylene sulfonate, and mixtures thereof. And the amount of the inorganic salt to be used may be selected from the peeling liquid composition 10 0 to 10 parts by weight based on 0 part by weight of the composition. The inorganic salt can be used to easily remove the color resist and the overcoating material in a short time by the synergistic effect of each component.

The peeling solution for a color filter according to the present invention provides a method of removing an acrylic film and a color resist of a defective substrate generated in a color filter process of a TFT-LCD and recycling the TFT array substrate from the defective substrate. Has a high removal rate and at the same time minimizes the damage of the insulating film and the metal wiring exposed in the peeling process, thereby providing a composition that can satisfactorily complete the removal of the acrylic film and the color resist on the substrate.

<Examples>

A release liquid composition was prepared with the compositions shown in Table 1 below.

Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Comparative Example 1 Comparative Example 2 Comparative Example 3 KOH




Weight portion 4.9 4.9 4.9 4.9 4.9 4.9 4.9 TMAH 13.0 13.0 AEE 15.0 15.0 15.0 15.0 15.0 MEA 15.0 15.0 DMSO 37.0 37.0 10.0 NMP 3.0 3.0 BDG 9.0 9.0 9.0 9.0 9.0 MDG 9.0 9.0 21.0 21.0 BzOH 10.0 10.0 10.0 5.0 10.0 10.0 THFA 17.0 17.0 10.0 17.0 17.0 17.0 17.0 TEPA 5.0 5.0 5.0 5.0 5.0 5.0 5.0 AEPZ 2.0 2.0 2.0 2.0 2.0 2.0 PCE 2.0 2.0 2.0 2.0 2.0 2.0 DIW 35.1 35.1 42.1 40.1 35.1 27.0 26.0 34.1 39.1

Abbreviations in Table 1 refer to the following.

KOH: Potassium hydroxide

TMAH: tetramethylammonium hydroxide

AEE: Aminoethoxyethanol

MEA: Monoethanolamine

DMSO: dimethylsulfoxide

NMP: N-methylpyrrolidone

BDG: butyl diglycol

MDG: methyl diglycol

BzOH: benzyl alcohol

THFA: tetrahydroperfurfuryl alcohol

TEPA: tetraethylene pentaamine

APEZ: Aminoethylpiperazine

PCE: In the structure of formula (1), X and Y are H, Z is methyl, M is Na, R ₁ and R ₂ are H, R ₃ is ethylene, m is 20, a is 14, b is 6, n Is a polyacrylate-polyallyl alcohol ethoxylate-series polymer represented by the general formula (6)

[Chemical Formula 6]

<Test Example>

The peeling liquid compositions of Examples 1 to 6 and Comparative Examples 1 to 5 were evaluated in terms of removing ability of the acrylic film and color resist photoresist of the peeling liquid from the substrate on which the color resist photoresist containing an acrylic film was formed by the following method.

&Lt; Test Example 1 > Acrylic film and color resist removal test

The acrylic film and the substrate on which the color resist was formed were immersed in the release liquid compositions of Examples 1 to 6 and Comparative Examples 1 to 5 corresponding to Table 1 at a temperature of 60 캜 to form an acrylic film and a color resist completely The time to peel off was measured.

The specimen was taken out of the color resist stripper composition, washed with ultrapure water, dried with nitrogen gas, and whether or not a color resist remained in the pattern was visually confirmed and magnified by an optical microscope to confirm that the residual acrylic film and color resist . Table 2 below shows the measurement results of the time when the acrylic film and the color resist were completely peeled off and no residue was found. SEM photographs of the TFT-substrate from which the acrylic film and the color register were removed using the peeling solution of Example 1 2.

 Test Example 2 Confirmation of dissolution of acrylic film and color resist photoresist

The peeling liquid composition including the acrylic film and the color resist peeled off in <Test Example 1> was further stirred for 30 minutes and visually observed for dissolution of the peeling liquid acrylic film and color resist is shown in Table 2.

&Lt; Test Example 3 >

The TFT substrate on which the acrylic film and the color resist had been removed was further immersed in the composition of the <Test Example 2> for 60 minutes, washed with ultrapure water for 30 seconds, and then dried with nitrogen for 10 seconds. The dried specimens were observed with a SEM to observe the surface and cross-section thereof, and the corrosion of the lower film was confirmed. The results are shown in Table 2, and an SEM photograph of the lower film of the TFT substrate using the peeling liquid of Comparative Example 5 is shown in FIG.

The experimental results are shown in Table 2 below.

○: Dissolved.

?: Slightly soluble.

X: Not dissolved, but in film form.

The acrylic film and the color resist Underlying membrane damage Removal time Dissolution Example 1 3 ○ radish Example 2 3 ○ radish Example 3 5 ○ radish Example 4 6 ○ radish Example 5 3 ○ radish Example 6 6 ○ radish Comparative Example 1 18 X U Comparative Example 2 10 X U Comparative Example 3 9 △ U

As shown in Table 2, the stripping solution composition according to the present invention was prepared by using an aromatic alcohol and a heterocyclic alcohol as solvents instead of a polar solvent such as alkylene glycol ether and dimethyl sulfoxide, It is easy to penetrate the resist structurally to improve the peelability of the acrylic film and the color resist because of its excellent solubility in the acrylic film and color resist. By using the polyacrylate-polyallyl alcohol ethoxylate-based polymer, the lower film (insulating film and metal film) It is possible to obtain an array substrate in a good state from the defective substrate generated in the color filter process and to recycle the array substrate.

Claims (15)

An alcoholic solvent selected from a cyclic alcohol having 3 to 20 carbon atoms, an aromatic alcohol, and a heterocyclic alcohol containing at least one element selected from N, S, and O, and a polymeric adsorbent,
Wherein the polymeric adsorbent has a number average molecular weight of 500 to 50,000 and comprises a polyacrylate anchor group and a polyallyl alcohol ethoxylate based polymer group. The peelable liquid composition for a color filter according to claim 1, wherein the polymeric adsorbent is represented by the following Formula 1:
[Chemical Formula 1]

Wherein X and Y are each hydrogen, alkyl having 1 to 6 carbon atoms, -COOM _3, or X or Y together with -COOM ₂ form an anhydride ring,
Z is hydrogen, alkyl having 1 to 6 carbon atoms or -CH ₂ COOM ₃ ,
M ₂ and M ₃ are each hydrogen, an alkali metal, ammonium or organic amine group,
R ₁ and R ₂ are each hydrogen or alkyl having 1 to 6 carbon atoms,
R ₃ is an alkylene group having 2 to 4 carbon atoms,
m is an integer of 1 to 100, n is an integer of 0 to 4,
a and b each represent an integer of 1 to 20; delete The method according to claim 1,
Wherein the alcohol-based solvent comprises an aromatic alcohol having a structure represented by the following formula (2): &lt; EMI ID =
(2)

In Formula 2,
R is at least one substituent selected from the group consisting of hydrogen and an alkyl group having 1 to 6 carbon atoms,
c is an integer from 0 to 5 The method according to claim 1,
Wherein the aromatic alcohol is at least one selected from the group consisting of phenylmethanol, methylphenylmethanol, ethylphenylmethanol, propylphenylmethanol, isopropylmethanol, and butylphenylmethanol. The method of claim 1, wherein
Wherein the alcohol-based solvent comprises a heterocyclic alcohol having a structure represented by the following formula (3): &lt; EMI ID =
(3)

In Formula 3,
X is an element selected from N, S, and O,
and d is an integer of 0 to 5. The method according to claim 6,
The heterocyclic alcohol may be at least one selected from the group consisting of tetrahydrofuranylmethanol, tetrahydrofuranylethanol tetrahydrofuranylpropanol, tetrahydrofuranylbutanol, tetrahydrothiophenylmethanol, tetrahydrofurfuryl alcohol, tetrahydrofuryl ethanol, tetrahydrofuryl propanol , At least one selected from the group consisting of tetrahydrofuryl butanol, tetrahydrothiophenyl ethanol, tetrahydrothiophenyl propanol, tetrahydrothiophenyl butanol, pyrrolidinyl methanol, pyrrolidinyl ethanol, pyrrolidinyl propanol and pyrrolidinyl butanol Gt; &lt; tb &gt; The method according to claim 1,
10 to 50 parts by weight of an alcoholic solvent and 0.5 to 10 parts by weight of a polymeric adsorbent based on 100 parts by weight of the composition. The method according to claim 1,
Wherein the composition further comprises 1 to 20 parts by weight, based on 100 parts by weight of the composition, of an amine-based detachment accelerator which does not contain oxygen atoms in the molecular structure. 10. The method of claim 9,
Wherein the amine-based peeling accelerator is a compound represented by the following Chemical Formula 4 or Chemical Formula 5:
[Chemical Formula 4]

E is an integer from 1 to 10;
[Chemical Formula 5]

F is an integer of 0 to 6; 11. The method of claim 10,
The amine release promoter may be selected from the group consisting of diethylenetriamine, triethylenetetraamine, tetraethylenepentamine, piperazinemethylamine, piperazinylethylamine, piperazinpropylamine, piperazinebutylamine, piperazinopentylamine, Wherein the release agent is selected from the group consisting of polyvinylpyrrolidone and polyvinylpyrrolidone. The method according to claim 1,
10 to 50 parts by weight of an alcoholic solvent and 0.5 to 10 parts by weight of a polymeric adsorbent based on 100 parts by weight of the composition,
1 to 20 parts by weight of an alkali compound;
5 to 30 parts by weight of a water-soluble amine;
1 to 20 parts by weight of at least one selected from alkylene glycol ethers, alkylene glycols, dialkylene glycol dialkyl ethers and alkylene glycol dialkyl ethers; And
And 0 to 5 parts by weight of a non-ionic surfactant. 13. The method of claim 12,
Wherein the alkali compound is selected from inorganic alkali hydroxides, ammonium hydroxides, alkyl ammonium hydroxides having 1 to 6 carbon atoms and phenyl alkyl ammonium hydroxides having alkyl groups having 1 to 6 carbon atoms. / RTI &gt; 13. The method of claim 12,
Wherein the water-soluble amine is selected from alkanolamine having 2 to 10 carbon atoms or alkoxyamine having 2 to 15 carbon atoms. A method for recycling a TFT array substrate by removing an acrylic resin and a color resist using the release liquid composition for a color filter according to any one of claims 1, 2 and 4 to 14.

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