KR20130000286A - Adhesive, display device comprising the adhesive and manufacturing method of the same - Google Patents

Abstract

PURPOSE: An adhesive is provided to improve hardness, vacuum tolerance and adhesion strength, and reduce the hardening processing time. CONSTITUTION: An adhesive(130) comprises 50-95 wt% of an acrylic copolymer resin, 4.7-44 wt% of an acrylic monomer, 0.1-2 wt% of a cross linkable monomer, 0.1-2 wt% of an initiator, and 0.1-2 wt% of an additive. A manufacturing method of a display device(100) comprises: a step for spreading a first adhesive on the surface of a cover substrate(140) and pre-hardening of the same; a step for spreading a second adhesive on one side of the cover substrate, attaching a display panel(120) with the cover substrate, and pre-hardening the second adhesive; a step for cleaning and inspiring the display panel and the cover substrate; and a step for hardening the first adhesive and second adhesive.

Description

Adhesive, Display Device Comprising the Same, and Manufacturing Method Thereof {ADHESIVE, DISPLAY DEVICE COMPRISING THE ADHESIVE AND MANUFACTURING METHOD OF THE SAME}

The present invention relates to an adhesive, a display device including the same, and a method of manufacturing the same, and more particularly, to an adhesive capable of improving visibility and transmittance and reducing process time, and a display device including the same and a method of manufacturing the same.

Recently, various display devices have been developed to reduce weight and volume, which are disadvantages of cathode ray tubes (CRTs). Examples of such a display device include a liquid crystal display (LCD), a field emission display (FED), a plasma display panel (PDP) and an organic light emitting display (OLED). Organic Light Emitting Display Device).

The display device is made of a transparent glass substrate on the front surface of the display panel, and may be damaged by an external impact. To prevent such a problem, a cover substrate capable of protecting the display panel is adhered to the front surface of the display panel.

However, when the display panel and the cover substrate are adhered to each other, particularly when an adhesive is applied to the outer frame portion of the display panel and adhered to the cover substrate, an air layer is present between the display panel and the cover substrate. Accordingly, the light emitted from the display panel and the light incident from the outside are reflected or scattered at the interface between the cover substrate and the air layer or at the interface between the display panel and the air layer, thereby reducing visibility.

In addition, when the air layer is filled with the adhesive between the display panel and the cover substrate, the process time for curing the adhesive is long, and the vacuum property of the adhesive is weak, so that bubbles or coating stains occur when the display panel and the cover substrate are vacuum-bonded. There is a problem that occurs.

The present invention provides an adhesive, a display device including the same, and a method of manufacturing the same, which can improve visibility and transmittance and reduce processing time.

In order to achieve the above object, the adhesive according to an embodiment of the present invention is 50 to 95 parts by weight of acrylic copolymer resin, 4.7 to 44 parts by weight of acrylic monomer, 0.1 to 2 parts by weight of crosslinkable monomer, 0.1 to 2 parts by weight of initiator And 0.1 to 2 parts by weight of the additive.

The acrylic copolymer resins include urethane acrylate, urethane methacrylate, epoxy acrylate, polyester acrylate, silicone acrylate, amino acrylate, epoxy methacrylate, polyester methacrylate, silicone methacrylate and amino methacrylate. It may be one or more selected from the group consisting of the rate.

The acrylic monomers are 2-butoxyethyl acrylate, 2-butoxyethyl methacrylate, 2-ethoxyethyl acrylate, 2-ethoxyethyl methacrylate, 2-ethyl-2-adamantyl acrylate, 2-ethyl-2-adamantyl methacrylate, 2-hydroxyethyl acrylate, 2-methyl-2-adamantyl acrylate, 2-methyl-2-adamantyl methacrylate, benzyl acrylate, Cyclohexyl acrylate, di (ethylene glycol) ethyl ether acrylate, di (ethylene glycol) ethyl ether methacrylate, di (ethylene glycol) methyl ether methacrylate, dicyclopentanyl acrylate, epoxy acrylate, ethylene glycol methyl Ether acrylate, ethylene glycol phenyl ether acrylate, hydroxypropyl acrylate, isobornyl acrylate, methyl adamantyl acrylate, neopentyl glycol benzoate acryl Yate, 2-hydroxyethyl methacrylate, adamantyl methacrylate, allyl methacrylate, benzyl methacrylate, cyclohexyl methacrylate, dicyclopentanyl methacrylate, epoxycyclohexyl methyl methacrylate, ethylene Glycolphenyl ether methacrylate, hydroxybutyl methacrylate, hydroxypropyl methacrylate, isobornyl methacrylate, glycidyl methacrylate, methyladamantyl methacrylate, methyl methacrylate, methyl glycidyl Methacrylate; Isobutyl acrylate, tert-butyl acrylate, lauryl acrylate, alkyl acrylate, 2-hydroxy acrylate, trimethoxybutyl acrylate, ethyl carbitol acrylate, phenoxyethyl acrylate, 4-hydroxy Butyl acrylate, 2-hydroxy-3-phenoxypropyl acrylate and their methacrylates; 3-fluoroethyl acrylate, 4-fluoropropyl acrylate and their methacrylates; It may be one or more selected from the group consisting of triethylsiloxane ethyl acrylate and these methacrylates.

The crosslinkable monomer is 1,4-butanediol diacrylate, 1,6-hexanediol diacrylate, 1,3-butylene glycol diacrylate, neopentyl glycol diacrylate, ethylene glycol diacrylate, diethylene Glycol diacrylate, propylene glycol dimethacrylate, pentaerythritol tetraacrylate, pentaerythritol diacrylate, pentaerythritol triacrylate, dipentaerythritol triacrylate, dipentaerythritol pentaacrylate, penta Erythritol hexaacrylate triethylene glycol diacrylate, polyethylene glycol diacrylate, dipentaerythritol diacrylate, sorbitol triacrylate, bisphenol A diacrylate derivative, trimethyl propane triacrylate and methacrylates thereof At least one selected from the group consisting of.

The additive is a silane coupling agent, and the silane coupling agent is 2- (3,4 epoxy cyclohexyl) -ethyltrimethoxysilane, 3-glycidoxytrimethoxysilane, 3-glycidoxypropyltriethoxysilane N-2 (aminoethyl) 3-amitopropylmethyldimethoxysilane, N-2 (aminoethyl) 3-aminopropyltrimethoxysilane, N-2 (aminoethyl) 3-aminopropyltriethoxysilane, 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-triethoxysil-N- (1,3-dimethylbutylidene) propylamine, N-phenyl-3-aminopropyltrimeth It may be any one or more selected from the group consisting of methoxysilane, 3-mercaptopropylmethyldimethoxysilane containing mercapto, 3-mercaptopropyltriethoxysilane, and 3-isocyanatepropyltriethoxysilane.

A display device according to an embodiment of the present invention includes a display panel and a cover substrate adhered to the display panel through an adhesive, wherein the adhesive is the aforementioned adhesive.

In addition, the manufacturing method of the display device according to an embodiment of the present invention is the step of applying and temporarily curing the first adhesive on the outer surface of the cover substrate, the second adhesive is applied to the entire surface of the cover substrate, the display panel and Bonding the cover substrate to temporarily harden the second adhesive; washing and inspecting the bonded display panel and the cover substrate; and curing the first and second adhesives.

The first adhesive and the second adhesive may use the adhesive of any one of claims 1 to 5.

The first adhesive may be applied to the outer periphery of the cover substrate in a dam shape.

The first adhesive and the second adhesive may be formed of any one selected from the group consisting of dispensing, screen printing, inkjet printing, roll printing, imprinting, and spin coating.

Adhesive according to an embodiment of the present invention has the advantage that can improve the degree of curing, vacuum resistance and adhesive strength. In addition, the display device to which the display panel and the cover substrate are adhered by the adhesive according to the exemplary embodiment has an advantage of improving visibility and transmittance. In addition, the manufacturing method of the display device according to an embodiment of the present invention has an advantage of shortening the curing process time by using an adhesive having excellent curing degree.

1 illustrates a display device according to an exemplary embodiment of the present invention.
2 is a diagram illustrating a method of manufacturing a display device according to an exemplary embodiment of the present invention, for each process.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 illustrates a display device according to an exemplary embodiment of the present invention.

Referring to FIG. 1, the display device 100 of the present invention includes a display panel 120 and a cover substrate 140 adhered to the display panel 120 through an adhesive 130.

In more detail, the display panel 120 combines the lower substrate 110 and the upper substrate 115 made of glass or plastic with a display element (not shown) interposed therebetween to implement an image. The display panel 120 may include a liquid crystal panel, a plasma display panel, a field emission display panel, or an organic light emitting diode display panel. It is not particularly limited.

The cover substrate 140 is adhered to the upper substrate 115 of the display panel 120 through the adhesive 130. The cover substrate 140 is made of tempered glass or tempered plastic, and serves to physically protect the display panel 120 from external shocks. An adhesive 130 is interposed between the display panel 120 and the cover substrate 140. Hereinafter, the adhesive 130 will be described in detail.

Adhesive according to an embodiment of the present invention is a UV (curable UV) curable adhesive includes an acrylic copolymer resin, acrylic monomers, crosslinkable monomers, initiators and additives.

More specifically, the acrylic copolymer resin is to control the visibility and the degree of curing of the adhesive, it is made of a polystyrene cyclic weight average molecular weight (Mw) of 2,000 to 60,000. For example, acrylic copolymer resins include urethane acrylate, urethane methacrylate, epoxy acrylate, polyester acrylate, silicone acrylate, amino acrylate, epoxy methacrylate, polyester methacrylate, silicone methacrylate and It may be one or more selected from the group consisting of amino methacrylate. In addition, the acrylic copolymer resin is included in 50 to 95 parts by weight based on 100 parts by weight of the total adhesive composition.

The acrylic monomer is to control the visibility and coating properties of the adhesive, the acrylic monomer is 2-butoxyethyl acrylate, 2-butoxyethyl methacrylate, 2-ethoxyethyl acrylate, 2-ethoxyethyl meth Acrylate, 2-ethyl-2-adamantyl acrylate, 2-ethyl-2-adamantyl methacrylate, 2-hydroxyethyl acrylate, 2-methyl-2-adamantyl acrylate, 2- Methyl-2-adamantyl methacrylate, benzyl acrylate, cyclohexyl acrylate, di (ethylene glycol) ethyl ether acrylate, di (ethylene glycol) ethyl ether methacrylate, di (ethylene glycol) methyl ether methacryl Elate, dicyclopentanyl acrylate, epoxy acrylate, ethylene glycol methyl ether acrylate, ethylene glycol phenyl ether acrylate, hydroxypropyl acrylate, isobornyl acryl Yate, methyladamantyl acrylate, neopentyl glycol benzoate acrylate, 2-hydroxyethyl methacrylate, adamantyl methacrylate, allyl methacrylate, benzyl methacrylate, cyclohexyl methacrylate, dicyclo Fentanyl methacrylate, epoxycyclohexyl methyl methacrylate, ethylene glycol phenyl ether methacrylate, hydroxybutyl methacrylate, hydroxypropyl methacrylate, isobornyl methacrylate, glycidyl methacrylate, methylada Menthyl methacrylate, methyl methacrylate, methylglycidyl methacrylate; Isobutyl acrylate, tert-butyl acrylate, lauryl acrylate, alkyl acrylate, 2-hydroxy acrylate, trimethoxybutyl acrylate, ethyl carbitol acrylate, phenoxyethyl acrylate, 4-hydroxy Butyl acrylate, 2-hydroxy-3-phenoxypropyl acrylate and their methacrylates; 3-fluoroethyl acrylate, 4-fluoropropyl acrylate and their methacrylates; Triethylsiloxane ethyl acrylate and one or more selected from the group consisting of these methacrylates are mixed. In addition, the acrylic monomer is included from 4.7 to 44 parts by weight based on 100 parts by weight of the total adhesive composition.

The crosslinkable monomer controls the visibility and the degree of curing of the adhesive, and includes two or more double bonds. The crosslinkable monomer is 1,4-butanediol diacrylate, 1,6-hexanediol diacrylate, 1,3-butylene glycol diacrylate, neopentyl glycol diacrylate, ethylene glycol diacrylate, diethylene glycol Diacrylate, propylene glycol dimethacrylate, pentaerythritol tetraacrylate, pentaerythritol diacrylate, pentaerythritol triacrylate, dipentaerythritol triacrylate, dipentaerythritol pentaacrylate, pentaerythrate Lithol hexaacrylate triethylene glycol diacrylate, polyethylene glycol diacrylate, dipentaerythritol diacrylate, sorbitol triacrylate, bisphenol A diacrylate derivative, trimethyl propane triacrylate and methacrylates thereof Any one or more than one selected from the group The combined may be used. In addition, the crosslinkable monomer is included in an amount of 0.1 to 2 parts by weight based on 100 parts by weight of the total adhesive composition.

The initiator controls the visibility and the degree of cure of the adhesive, poly [polyoxyethylene 4,4'-azobis- (4-cyanopentanoate), 2,2-azobisisobutyronitrile, 2,2 -Azobis (2,4-dimethylvaleronitrile), 2,2-azobis (4-methoxy 2,4-dimethylvaleronitrile), 1,1-azobis (cyclohexane-1-carbonitrile) , Dimethyl 2,2-azobisisobutylate; Benzoyl peroxide, lauroyl peroxide, t-butylperoxy pivalate, 1,1-bis- (t-butylfooxy) cyclohexane, or a redox initiator including hydrogen peroxide or peroxide. Moreover, 2,2'- diethoxy acetophenone, 2,2'- dibutoxy acetophenone, 2-hydroxy-2-methylproriophenone, pt- butyl trichloro acetophenone, pt- butyl dichloro acetophenone, 4 -Chloroacetophenone, 2,2'-dichloro-4-phenoxyacetophenone, 2-methyl-1- (4- (methylthio) phenyl) -2-morpholinopropan-1-one, 2-benzyl- Acetophenone compounds such as 2-dimethylamino-1- (4-morpholinophenyl) -butan-1-one; Benzophenone, p- (diethylamino) benzophenone, 4,4'-dimethylaminobenzophenone, 4,4'-dichlorobenzophenone, 3,3'-dimethyl-2-methoxybenzophenone, benzoyl benzoic acid, benzoyl Benzophenone compounds such as methyl benzoate, 4-phenyl benzophenone, hydroxy benzophenone, acrylated benzophenone, 4,4'-bis (dimethylamino) benzophenone, and 4,4'-bis (diethylamino) benzophenone ; Thioxanthone, 2-Chrol Thioxanthone, 2-Methyl Thioxanthone, Isopropyl Thioxanthone, 2,4-Diethyl Thioxanthone, 2,4-Diisopropyl Thioxanthone, 2-Chloro Thioxide Thioxanthone type compounds, such as Santon; Benzoin compounds such as benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin isobutyl ether, benzyl dimethyl ketal; 2,4,6, -trichloro s-triazine, 2-phenyl 4,6-bis (trichloromethyl) -s-tria, 2- (3 ', 4'-dimethoxy styryl) -4,6 -Bis (trichloromethyl) -s-triazine, 2- (4'-methoxy naphthyl) -4,6-bis (trichloromethyl) -s-triazine, 2- (p-methoxy phenyl) -4,6-bis (trichloromethyl) -s-triazine, 2,4-bistrichloromethyl-6-p-methoxystyryl-s-triazine, 2-p-methoxystyryl-4 , 6-bistrichloromethyl-s-triazine, 2- (p-tril) -4,6-bis (trichloromethyl) -s-triazine, 2-phenyl 4,6-bis (trichloromethyl) -s-triazine, bis (trichloromethyl) -6-styryl s-triazine, 2- (naphtho 1-yl) -4,6-bis (trichloromethyl) -s-triazine, 2- (4-methoxy naphtho 1-yl) -4,6-bis (trichloro methyl) -s-triazine, 2-4-trichloro methyl (piperonyl) -6-triazine, 2-4- Triazine-based compounds such as trichloromethyl (4'-methoxy styryl) -6-triazine, 2-dodecyl thioxanthone, 2,4- Methyl Thioxanthone, 2-4-diethyl Thioxanthone, 2,2-bis-2-chlorophenyl-4,5,4,5-tetraphenyl-2-1, 2-biimidazole, Ciba Special Chemical Irgacure369, Irgacure651, Irgacure907, Irgacure819, Darocur TPO, OXE-01, OXE-02, Adeka's N-1919, NCI-831 and the like can be used singly or in combination. The initiator is included in 0.1 to 2 parts by weight based on 100 parts by weight of the total adhesive composition.

The additive is a silane coupling agent for improving the adhesive strength of the adhesive, 2- (3,4 epoxy cyclohexyl) -ethyltrimethoxysilane, 3-glycidoxytrimethoxysilane, 3-glycidoxypropyltrie Methoxysilane, N-2 (aminoethyl) 3-amitopropylmethyldimethoxysilane, N-2 (aminoethyl) 3-aminopropyltrimethoxysilane, N-2 (aminoethyl) 3-aminopropyltriethoxy Silane, 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-triethoxysil-N- (1,3-dimethylbutylidene) propylamine, N-phenyl-3-aminopropyl Trimethoxysilane, any one selected from the group consisting of mercapto-containing 3-mercaptopropylmethyldimethoxysilane, 3-mercaptopropyltriethoxysilane, 3-isocyanatepropyltriethoxysilane, or a mixture of two or more thereof Can be used. The silane coupling agent is included in an amount of 0.1 to 2 parts by weight based on 100 parts by weight of the total adhesive composition.

As described above, the adhesive according to an embodiment of the present invention is 50 to 95 parts by weight of the acrylic copolymer resin, 4.7 to 44 parts by weight of the acrylic monomer, 0.1 to 2 parts by weight of the crosslinkable monomer, 0.1 to 2 parts by weight of the initiator and 0.1 to the additive. 2 parts by weight.

Hereinafter, a manufacturing method of the display device including the adhesive described above will be described.

2 is a diagram illustrating a method of manufacturing a display device according to an exemplary embodiment of the present invention.

Referring to FIG. 2A, a cover substrate 140 made of tempered glass or tempered plastic is prepared, and a first adhesive 130a is coated on one surface of the cover substrate 140. In this case, the first adhesive 130a is applied in a dam shape surrounding the outer surface of the cover substrate 140, and the first adhesive 130a uses the adhesive of the present invention described above. The first adhesive 130a is applied to any one selected from the group consisting of dispensing, screen printing, inkjet printing, roll printing, imprinting, and spin coating.

Subsequently, referring to FIG. 2B, the first adhesive 130a applied to the cover substrate 140 is temporarily cured by irradiating UV. At this time, the first adhesive 130a is temporarily hardened to maintain the dam shape. Next, as shown in FIG. 2C, the second adhesive 130b is applied to one surface of the cover substrate 140 to which the first adhesive 130a is applied. The second adhesive 130b uses the above-described adhesive of the present invention and is applied by controlling the composition ratio at a lower viscosity than the first adhesive 130a. At this time, the second adhesive 130b is applied to the inside of the dam shape formed by the first adhesive 130a, that is, the entire surface of the cover substrate 140.

Next, referring to FIGS. 2D and 2E, the cover substrate 140 coated with the first adhesive 130a and the second adhesive 130b is bonded to the prepared display panel 120. In this case, the cover substrate 140 and the display panel 120 are bonded together under vacuum conditions. Next, the second adhesive 130b is waited for several minutes to several hours to spread on the front surface between the cover substrate 140 and the display panel 120.

Next, referring to FIG. 2F, the second adhesive 130b applied between the cover substrate 140 and the display panel 120 is temporarily cured. At this time, the temporary curing process is performed in the same manner as the temporary curing process of the first adhesive (130a) described above.

Next, referring to FIGS. 2G and 2H, after the temporary curing of the second adhesive 130b is finished, the first adhesive 130a and the first protrusion 130 protruding out of the cover substrate 140 and the display panel 120 may be formed. 2 Clean the adhesive 130b. In addition, the external appearance of the first adhesive 130a and the second adhesive 130b between the cover substrate 140 and the display panel 120 may be examined.

Finally, as shown in (i) of FIG. 2, the first adhesive 130a and the second adhesive 130b applied in the display device 100 are irradiated with UV to thereby harden and thereby harden the present invention. A display device according to the example is manufactured.

Hereinafter, preferred embodiments of the present invention will be described in order to help understanding of the present invention. However, the following examples are merely to illustrate the present invention is not limited to the following examples.

Example 1

80 parts by weight of a urethane acrylate having a polystyrene equivalent weight average molecular weight (Mw) of 50,000 is used as the acrylic copolymer resin, 18 parts by weight of isobornyl acrylate as the acrylic monomer, and dipentaerythritol triacrylate as the crosslinkable monomer. Is used in 0.5 parts by weight, the initiator is 1 parts by weight of 1-hydroxycyclohexylphenyl ketone, 0.5 parts by weight of 3-glycidoxypropyltriethoxysilane as an additive and uniformly mixed at room temperature for 24 hours or more To prepare an adhesive composition.

Example 2

85 parts by weight of urethane acrylate having a polystyrene equivalent weight average molecular weight (Mw) of 50,000 is used as the acrylic copolymer resin, 13 parts by weight of 2-ethoxyethyl acrylate as the acrylic monomer, and dipentaerythritol tree as the crosslinkable monomer. 1 part by weight of acrylate, 0.5 parts by weight of 1-hydroxycyclohexylphenyl ketone as an initiator, and 0.5 parts by weight of 3-glycidoxypropyltriethoxysilane as additives to homogeneously at least 24 hours at room temperature To make an adhesive composition.

Comparative Example 1

80 parts by weight of epoxy acrylate is used as the acrylic copolymer resin, 18 parts by weight of isobornyl acrylate as the acrylic monomer, 0.5 parts by weight of dipentaerythritol triacrylate as the crosslinking monomer, and the initiator is Using 1 part by weight of hydroxycyclohexylphenyl ketone, 0.5 parts by weight of 3-glycidoxypropyltriethoxysilane as an additive was mixed uniformly at room temperature for 24 hours or more to prepare an adhesive composition.

Comparative Example 2

30 parts by weight of silicone acrylate is used as the acrylic copolymer resin, 68 parts by weight of 2-ethoxyethyl acrylate as the acrylic monomer, 1 part by weight of dipentaerythritol triacrylate as the crosslinking monomer, 0.5 parts by weight of 1-hydroxycyclohexylphenyl ketone was used, and 0.5 parts by weight of 3-glycidoxypropyltriethoxysilane as an additive was uniformly mixed at room temperature for at least 24 hours to prepare an adhesive composition.

The adhesive composition prepared according to the above Examples and Comparative Examples is shown in Table 1 by evaluating the physical properties in the following manner.

end. Hardness rating

Soak a certain amount of UV adhesive cured under photocuring conditions in a solvent (Tetrahydrofuran) for more than 24 hours. (W _a ) Filter out the insoluble polymer and dry it for a certain time using _a filter. (W _b ) Was evaluated.

Gel contents (%) = W _b / W _a x 100

I. Vacuum resistance

The adhesive composition was coated with an initial thickness of 150 μm, and then exposed at a process vacuum value of 5.0 × 10 ⁻¹ torr for 3 minutes to evaluate the weight change rate using a balance.

All. Permeability

The adhesive composition was coated with 150 μm between glass, and the specimen prepared after UV irradiation was evaluated using a UV-vis spectrometer.

la. Adhesive strength

The adhesive composition is coated with 150 μm between glass, and the specimen prepared after UV irradiation is evaluated by UTM. The adhesion area was 1 cm 2, and the speed was 300 mm / min.

Example 1 Example 2 Comparative Example 1 Comparative Example 2 Hardness (%) 95 98 61 59 Vacuum resistance (%) 99 95 45 69 Transmittance (at400nm) (%) 99 99 98 96 Adhesive strength (kgf / ㎠) 10 11 5 4

As shown in Table 1, it can be seen that the adhesive composition according to Examples 1 and 2 of the present invention is superior in curing degree, vacuum resistance and adhesive strength than Comparative Examples 1 and 2.

Therefore, the adhesive according to an embodiment of the present invention has the advantage of improving the degree of curing, vacuum resistance and adhesive strength. In addition, the display device to which the display panel and the cover substrate are adhered by the adhesive according to the exemplary embodiment has an advantage of improving visibility and transmittance. In addition, the manufacturing method of the display device according to an embodiment of the present invention has an advantage of shortening the curing process time by using an adhesive having excellent curing degree.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood that the invention may be practiced. Therefore, the embodiments described above are to be understood as illustrative and not restrictive in all aspects. In addition, the scope of the present invention is shown by the claims below, rather than the above detailed description. Also, all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

Claims (10)

Adhesive comprising 50 to 95 parts by weight of acrylic copolymer resin, 4.7 to 44 parts by weight of acrylic monomer, 0.1 to 2 parts by weight of crosslinkable monomer, 0.1 to 2 parts by weight of initiator and 0.1 to 2 parts by weight of additive.
The method according to claim 1,
The acrylic copolymer resins include urethane acrylate, urethane methacrylate, epoxy acrylate, polyester acrylate, silicone acrylate, amino acrylate, epoxy methacrylate, polyester methacrylate, silicone methacrylate and amino methacrylate. At least one adhesive selected from the group consisting of latexes.
The method according to claim 1,
The acrylic monomers are 2-butoxyethyl acrylate, 2-butoxyethyl methacrylate, 2-ethoxyethyl acrylate, 2-ethoxyethyl methacrylate, 2-ethyl-2-adamantyl acrylate, 2-ethyl-2-adamantyl methacrylate, 2-hydroxyethyl acrylate, 2-methyl-2-adamantyl acrylate, 2-methyl-2-adamantyl methacrylate, benzyl acrylate, Cyclohexyl acrylate, di (ethylene glycol) ethyl ether acrylate, di (ethylene glycol) ethyl ether methacrylate, di (ethylene glycol) methyl ether methacrylate, dicyclopentanyl acrylate, epoxy acrylate, ethylene glycol methyl Ether acrylate, ethylene glycol phenyl ether acrylate, hydroxypropyl acrylate, isobornyl acrylate, methyl adamantyl acrylate, neopentyl glycol benzoate acryl Yate, 2-hydroxyethyl methacrylate, adamantyl methacrylate, allyl methacrylate, benzyl methacrylate, cyclohexyl methacrylate, dicyclopentanyl methacrylate, epoxycyclohexyl methyl methacrylate, ethylene Glycolphenyl ether methacrylate, hydroxybutyl methacrylate, hydroxypropyl methacrylate, isobornyl methacrylate, glycidyl methacrylate, methyladamantyl methacrylate, methyl methacrylate, methyl glycidyl Methacrylate; Isobutyl acrylate, tert-butyl acrylate, lauryl acrylate, alkyl acrylate, 2-hydroxy acrylate, trimethoxybutyl acrylate, ethyl carbitol acrylate, phenoxyethyl acrylate, 4-hydroxy Butyl acrylate, 2-hydroxy-3-phenoxypropyl acrylate and their methacrylates; 3-fluoroethyl acrylate, 4-fluoropropyl acrylate and their methacrylates; Adhesives which are at least one selected from the group consisting of triethylsiloxane ethyl acrylate and these methacrylates.
The method according to claim 1,
The crosslinkable monomer is 1,4-butanediol diacrylate, 1,6-hexanediol diacrylate, 1,3-butylene glycol diacrylate, neopentyl glycol diacrylate, ethylene glycol diacrylate, diethylene Glycol diacrylate, propylene glycol dimethacrylate, pentaerythritol tetraacrylate, pentaerythritol diacrylate, pentaerythritol triacrylate, dipentaerythritol triacrylate, dipentaerythritol pentaacrylate, penta Erythritol hexaacrylate triethylene glycol diacrylate, polyethylene glycol diacrylate, dipentaerythritol diacrylate, sorbitol triacrylate, bisphenol A diacrylate derivative, trimethyl propane triacrylate and methacrylates thereof At least one adhesive selected from the group consisting of.
The method according to claim 1,
The additive is a silane coupling agent,
The silane coupling agent is 2- (3,4 epoxy cyclohexyl) -ethyltrimethoxysilane, 3-glycidoxycitrimethoxysilane, 3-glycidoxypropyltriethoxysilane, N-2 (aminoethyl) 3-amitopropylmethyldimethoxysilane, N-2 (aminoethyl) 3-aminopropyltrimethoxysilane, N-2 (aminoethyl) 3-aminopropyltriethoxysilane, 3-aminopropyltrimethoxysilane , 3-aminopropyltriethoxysilane, 3-triethoxysil-N- (1,3-dimethylbutylidene) propylamine, N-phenyl-3-aminopropyltrimethoxysilane, mercapto-containing Adhesive which is at least one selected from the group consisting of 3-mercaptopropylmethyldimethoxysilane, 3-mercaptopropyltriethoxysilane, and 3-isocyanatepropyltriethoxysilane.
Display panel; And
A cover substrate adhered to the display panel through an adhesive;
The adhesive is a display device according to any one of claims 1 to 5.
Applying and temporarily curing the first adhesive on one surface of the cover substrate;
Applying a second adhesive to an entire surface of the cover substrate, and bonding the display panel and the cover substrate to temporarily harden the second adhesive;
Cleaning and inspecting the bonded display panel and the cover substrate; And
And main curing the first and second adhesives.
The method of claim 7, wherein
The method of claim 1, wherein the first adhesive and the second adhesive use the adhesive of claim 1.
The method of claim 7, wherein
And the first adhesive is applied to the outer side of the cover substrate in a dam shape.
The method of claim 7, wherein
And the first adhesive and the second adhesive are formed from any one selected from the group consisting of dispensing, screen printing, inkjet printing, roll printing, imprinting, and spin coating.

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