KR102029436B1 - Adhesive, display device comprising the adhesive and method for manufacturing of the same - Google Patents

Adhesive, display device comprising the adhesive and method for manufacturing of the same Download PDF

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KR102029436B1
KR102029436B1 KR1020120138181A KR20120138181A KR102029436B1 KR 102029436 B1 KR102029436 B1 KR 102029436B1 KR 1020120138181 A KR1020120138181 A KR 1020120138181A KR 20120138181 A KR20120138181 A KR 20120138181A KR 102029436 B1 KR102029436 B1 KR 102029436B1
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adhesive
display panel
curing
monomer
cover substrate
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KR1020120138181A
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Korean (ko)
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KR20140070096A (en
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손아람
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엘지디스플레이 주식회사
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
    • C09J4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09J159/00 - C09J187/00
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2400/00—Presence of inorganic and organic materials
    • C09J2400/10—Presence of inorganic materials
    • C09J2400/14—Glass
    • C09J2400/143—Glass in the substrate

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

Adhesive according to an embodiment of the present invention is characterized in that it comprises a monomer, a crosslinkable monomer and a photoinitiator, a thiol group introduced.

Description

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

The present invention relates to an adhesive, a display device including the same, and a manufacturing method thereof, and more particularly, to an adhesive having an easy process and excellent reliability, a display device including the same, and a manufacturing method thereof.

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. In order to prevent such a problem, a cover substrate for protecting the display panel is bonded to the front of the display panel.

However, in the case where the display panel and the cover substrate are bonded to each other, in particular, when an adhesive is applied to the outer portion of the display panel and bonded to the cover substrate, an air layer exists 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.

Therefore, recently, a technique of filling all the air layers between the display panel and the cover substrate with an adhesive is used. This technology uses a UV-curable transparent adhesive material to prevent reflection or scattering of incident light due to the difference in refractive index between the display panel and the cover substrate. The curing time is very short and does not require high temperature during curing. It can be simplified and mass production is possible, which has many advantages in terms of productivity.

1 is a view illustrating a process of adhering a conventional display panel and a cover substrate. Referring to FIG. 1, the dam 2 is applied to one side edge of the cover substrate 1 and temporarily cured to maintain the edge shape. Then, the adhesive 3 is filled in the dam 2 and then bonded to the display panel 4. Next, the dam 2 and the adhesive 3 are irradiated with UV and completely cured to bond the display panel 4 and the cover substrate 1 to each other.

However, in the process of bonding the display panel 4 and the cover substrate 1 during the process, the adhesive filled inside the dam overflows out of the dam, and a difference in refractive index occurs depending on the curing speed of the dam and the adhesive. The stain is visible. In addition, there is a problem in that the curing efficiency of the adhesive is lowered due to light shielding due to the black matrix formed on the display panel, and it is difficult to adjust the curing degree of the adhesive, which is difficult to rework.

The present invention provides an adhesive which is easy to process and has excellent reliability, a display device including the same, and a method of manufacturing the same.

In order to achieve the above object, the adhesive according to an embodiment of the present invention is characterized in that it comprises a monomer, a crosslinkable monomer and a photoinitiator in which a thiol group is introduced.

The thiol group introduced monomer is characterized in that any one selected from the group consisting of acrylic, silicone and rubber (rubber) resin.

The adhesive further comprises an additive, the additive is characterized in that the tackifier.

In addition, the 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 includes a monomer, a crosslinkable monomer, and a thiol group introduced therein. It is characterized by including a photoinitiator.

The thiol group introduced monomer is characterized in that any one selected from the group consisting of acrylic, silicone and rubber (rubber) resin.

The adhesive further comprises an additive, the additive is characterized in that the tackifier.

In addition, a method of manufacturing a display device according to an exemplary embodiment of the present invention may include applying an adhesive to one surface of a display panel and performing primary curing, and bonding the display panel and the cover substrate to secondary curing the adhesive. And the adhesive comprises a monomer, a crosslinkable monomer and a photoinitiator having a thiol group introduced therein.

The adhesive is formed by any one selected from the group consisting of slit coating, dispensing, screen printing, inkjet printing, roll printing, imprinting and spin coating.

After the first step of curing the adhesive, the adhesive is characterized in that the temporary curing of the gel (gel) type.

The secondary curing is characterized in that the UV irradiation amount is 1500 to 2000mJ / ㎠ and performed within 15 seconds.

The primary curing is characterized in that performed within 15 seconds at 35 to 50% of the UV irradiation amount of the secondary curing.

The adhesive according to an embodiment of the present invention, a display device including the same, and a method of manufacturing the same may adjust the curing degree of the adhesive to a UV irradiation amount, thereby preventing occurrence of stains, etc., without using a dam, and reworking is possible. Therefore, there is an advantage in that the process can be provided easily and the adhesive excellent in reliability.

1 is a view showing a process of adhering a display panel and a cover substrate according to the related art.
2 illustrates a display device according to an exemplary embodiment of the present invention.
Figure 3 is a structural formula showing a monomer in which a thiol group of the present invention is introduced.
4 is a diagram illustrating a method of manufacturing a display device according to an exemplary embodiment of the present invention, for each process.
5 is a view showing immediately after applying an adhesive prepared according to an embodiment of the present invention on a substrate.
6 is a view showing after the primary curing the adhesive prepared according to an embodiment of the present invention.
7 is a view showing after peeling off the adhesive of FIG.
8 is a view showing after the secondary curing the adhesive prepared according to an embodiment of the present invention.

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

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

Referring to FIG. 2, 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 first substrate 110 and the second substrate 115 made of glass or plastic with a display device (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.

In the present exemplary embodiment, the display panel 120 is a liquid crystal panel. For example, the liquid crystal panel 120 is a portion where an image is realized, and the first substrate 110 and the first substrate 110 bonded to each other with the liquid crystal layer interposed therebetween. 2 may include a substrate (115). Although not shown in the drawings, a plurality of pixels may be defined in the first substrate 110 called a TFT array substrate by crossing a plurality of scan lines and data lines in a matrix shape. Each pixel may include a thin film transistor (TFT) capable of turning on / off a signal, and a pixel electrode connected to the thin film transistor may be positioned.

In addition, the second substrate 115 called a color filter substrate includes red (R), green (G), and blue (B) color filters corresponding to a plurality of pixels, respectively, and surrounds them with scan lines, data lines, and thin films. A black matrix may be provided to cover non-display elements such as transistors. In addition, a transparent common electrode covering them may be provided.

The cover substrate 140 is adhered to the first substrate 110 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.

The adhesive according to an embodiment of the present invention includes a monomer, a crosslinkable monomer, a photoinitiator, and an additive to which a thiol group (-SH) is introduced as an ultraviolet (UV) curable adhesive.

More specifically, the monomer into which the thiol group is introduced is to control visibility of the adhesive, coating property and degree of curing, and is made of any one or more selected from acrylic, silicone and rubber.

For example, when the monomer is acrylic, 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 meth Acrylate, 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 Colbenzoate acrylate, 2-hydroxyethyl methacrylate, adamantyl methacrylate, allyl methacrylate, benzyl methacrylate, cyclohexyl methacrylate, dicyclopentanyl methacrylate, epoxycyclohexyl methyl methacrylate Acrylate, ethylene glycol phenyl ether methacrylate, hydroxybutyl methacrylate, hydroxypropyl methacrylate, isobornyl methacrylate, glycidyl methacrylate, methyl adamantyl 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.

The monomer in which the thiol group is introduced in the present invention may be designed as follows. 3 is a structural formula showing a monomer in which a thiol group of the present invention is introduced.

Referring to FIG. 3, the monomer represented by A, for example, methacrylate serves as a radical diffusion function, and the thiol group (-SH) introduced into the monomer functions as a radical scavenger to diffuse the radical. This will delay the function.

More specifically, referring to the following reaction formula showing the reaction upon irradiation with UV to the monomer in which the thiol group of the present invention is introduced, when the thiol group is introduced into the radical scavenger, the H atom of the thiol group is free radicals. The role is to turn off UV radiation to scavenge free radicals to stop curing. Therefore, the monomer can be designed to control the curing state of the adhesive step by step by UV On / Off switching (switching).

[Scheme]

Figure 112012099651355-pat00001

On the other hand, the crosslinkable monomer is to control the visibility and curing degree 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.

The photoinitiator is to control the degree of curing of the adhesive, poly [polyoxyethylene 4,4'-azobis- (4-cyanopentanoate), 2,2-azobisisobutyronitrile, 2,2-azo Bis (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 additives are tackifiers for improving the adhesive strength of the adhesive, and include rosin derivatives, polyterpene resins, aromatic modified terpene resins and hydrides thereof, terpene phenol resins, coumarone-indene resins, aliphatic petroleum resins, and aromatics. Low molecular mass copolymers of the petroleum resins and their hydrides, styrenes or substituted styrenes can be used alone or in combination of two or more thereof.

As described above, the adhesive according to an embodiment of the present invention includes a monomer, a crosslinkable monomer, a photoinitiator, and an additive having a thiol group (-SH) introduced therein.

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

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

Referring to FIG. 4A, the liquid crystal panel 120 is prepared, and the adhesive 130 is coated on the entire surface of the liquid crystal panel 120. At this time, the adhesive 130 uses the adhesive of the present invention described above, the adhesive 130 is applied by a slit coating (slit coating). However, the present invention is not limited thereto, and the adhesive 130 may be 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. 4B, the adhesive 130 applied to the liquid crystal panel 120 is irradiated with UV and first cured. The primary curing is carried out within about 15 seconds at a UV irradiation amount of about 500 to 1000mJ / cm 2, and is carried out in a range of about 35 to 50% of the UV irradiation amount of the secondary curing to be performed later. The adhesive 130 on which the primary curing is performed is maintained in a gel shape.

Next, referring to FIG. 4C, the cover substrate 140 is vacuum-bonded to the liquid crystal panel 120 to which the adhesive 130 is applied. 4 (d), a defoaming process is performed on the adhesive 130 between the cover substrate 140 and the liquid crystal panel 120. The defoaming step is a step of removing bubbles in the adhesive. Finally, referring to FIG. 4E, the adhesive 130 applied between the cover substrate 140 and the liquid crystal panel 120 is second cured to manufacture a display device according to an exemplary embodiment. . Secondary curing is performed within about 15 seconds at a UV dose of about 1500 to 2000 mJ / cm 2 to completely cure the adhesive 130.

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

Figure 112012099651355-pat00002

Methacrylate, 1.1eq EDC (1-ethyl-3- (3-dimethylaminopropyl) carbodiimide) and 3eq sodium sulfide (Na 2 S) were added to a solvent of dimethylformamide and reacted for 3 to 4 hours. The thiol group was introduced into methacrylate.

Figure 112012099651355-pat00003

In addition, the pentaerythritol triacrylate and the urethane acrylate-based copolymer resin are used as 90 parts by weight of the methacrylate and the crosslinkable monomer into which the thiol group is introduced, and the photoinitiator is 5 parts by weight of 1-hydroxycyclohexylphenyl ketone. It was used as a part, the tackifier was mixed in 5 parts by weight and uniformly mixed at room temperature for 24 hours or more to prepare an adhesive.

After applying the adhesive prepared according to the above example with a slit coating on the substrate, the adhesive immediately after the application is shown in Figure 5, the adhesive after the first curing is shown in Figures 6 and 7, the adhesive after the second curing 8 is shown. At this time, UV was irradiated with a light amount of 1000mJ / ㎠ at the first curing, it was irradiated with a light amount of 2000mJ / ㎠ at the second curing.

Referring to FIG. 5, since the adhesive is in a liquid form immediately after the adhesive is applied on the substrate, shape maintenance is impossible. On the other hand, referring to Figure 6 after the first curing of the adhesive is a semi-solid state, such as a gel is possible to maintain its shape, as shown in Figure 7, can be easily removed to rework (rework) Is possible. And, as shown in Figure 8, it was confirmed that after the second curing of the adhesive completely solid (solid).

As a result of the embodiment of the present invention as described above, the adhesive of the present invention by adjusting the UV irradiation amount to adjust the curing degree of the adhesive, it is possible to easily perform the bonding of the cover substrate and the display panel and also easy to rework There is an advantage. In addition, after the bonding of the cover substrate and the display panel, there is an advantage of improving the reliability of the bonding of the cover substrate and the display panel by maximizing the adhesive force by completely curing.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the above-described technical configuration of the present invention may be embodied in other specific forms by those skilled in the art to which the present invention pertains without changing its technical spirit or essential features. It will be appreciated that it 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, it is to be construed that all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts are included in the scope of the present invention.

120: display panel 130: adhesive
140: cover substrate

Claims (11)

delete delete delete Display panel; And
A cover substrate adhered to the display panel through an adhesive;
The adhesive includes a monomer, a crosslinkable monomer and a photoinitiator having a thiol group introduced therein,
The thiol group introduced monomer is any one selected from the group consisting of acrylic resin, silicone resin and rubber resin,
The side of the cover substrate and the side of the adhesive is a display device, characterized in that spaced apart from each other.
delete The method of claim 4, wherein
The adhesive further includes an additive, wherein the additive is a tackifier.
Applying an adhesive to one surface of the display panel and first curing the adhesive; And
And bonding the display panel and the cover substrate to the second hardening of the adhesive.
The adhesive includes a monomer, a crosslinkable monomer and a photoinitiator having a thiol group introduced therein,
The thiol group introduced monomer is any one selected from the group consisting of acrylic resin, silicone resin and rubber resin,
And a side surface of the cover substrate and a side surface of the adhesive are spaced apart from each other by a predetermined interval.
The method of claim 7, wherein
And the adhesive is formed by any one selected from the group consisting of slit coating, dispensing, screen printing, inkjet printing, roll printing, imprinting and spin coating.
The method of claim 7, wherein
And after the first curing of the adhesive, the adhesive is temporarily cured to a gel form.
The method of claim 7, wherein
The secondary curing method of manufacturing a display device, characterized in that the UV irradiation amount is 1500 to 2000mJ / ㎠ and performed within 15 seconds.
The method of claim 10,
And wherein the primary curing is performed within 15 seconds at 35 to 50% of the UV irradiation amount of the secondary curing.
KR1020120138181A 2012-11-30 2012-11-30 Adhesive, display device comprising the adhesive and method for manufacturing of the same KR102029436B1 (en)

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JP2009001655A (en) * 2007-06-21 2009-01-08 Nippon Kayaku Co Ltd Light curing transparent adhesive composition

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