KR20170050707A - Liquid crystal display device with black adhesive resin - Google Patents

Abstract

A liquid crystal display device is provided. The liquid crystal display device includes a liquid crystal panel, a backlight unit, a cover glass, a frame, and a light-shielding adhesive resin. The backlight unit is in contact with the lower surface of the liquid crystal panel. The adhesive resin adheres the liquid crystal panel and the backlight unit, and is configured to shield light emitted from the backlight unit. The liquid crystal display device includes a light-shielding adhesive resin that adheres the liquid crystal panel and the backlight unit and shields light emitted between the liquid crystal panel and the backlight unit, thereby minimizing the bezel size of the liquid crystal display device and minimizing light leakage at the same time.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a liquid crystal display (LCD)

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device having a structure for reducing a bezel size of a liquid crystal display device and minimizing a light leakage that may be generated between a liquid crystal panel and a backlight unit.

2. Description of the Related Art A liquid crystal display (LCD) is a display device that implements an image by controlling a light transmittance of a light source by controlling the arrangement of liquid crystals by applying an electric field to the liquid crystal , Smart phones and tablet PCs. Particularly, in recent years, studies have been actively conducted to reduce the bezel area of a liquid crystal display device in order to make the design of the liquid crystal display device beautiful and miniaturize the liquid crystal display device.

The liquid crystal display includes a backlight unit including a light source and a liquid crystal panel disposed above the backlight unit. The backlight unit and the liquid crystal panel are bonded with an adhesive tape. However, as the bezel area of the liquid crystal display device is reduced, the size of the adhesive tape is also reduced, and the adhesive area of the adhesive tape can also be reduced. Decreasing the adhesion area of the adhesive tape weakens the adhesive strength of the adhesive tape and causes various problems such as causing light leakage in the liquid crystal display device.

[Related Technical Literature]

1. Liquid crystal display module (Patent Application No. 10-2013-0169348)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a liquid crystal display device having a structure in which a liquid crystal panel and a backlight unit are fixed while reducing a light leakage even when a bezel area is reduced. It is another object of the present invention to provide a method of manufacturing a liquid crystal display device which can simplify a process accompanied with the manufacture of a liquid crystal display device having a reduced bezel area, thereby reducing the processing time and cost.

The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a method of manufacturing a liquid crystal display (LCD) device, comprising: disposing a liquid crystal panel on a rear surface of a cover glass so as to be spaced apart from a cover glass frame; Disposing a backlight unit on a back surface of the liquid crystal panel; And a step of fixing the liquid crystal panel and the backlight unit by applying a light shielding adhesive resin to the light shielding adhesive resin application space between the liquid crystal panel and the backlight unit and the cover glass frame of the cover glass.

According to still another aspect of the present invention, the light-shielding adhesive resin applied to the space between the liquid crystal panel and the backlight unit and the cover glass frame has a viscosity of 20,000 cps to 45,000 cps and has a thixotropy of 3 to 6 .

According to another aspect of the present invention, the light-shielding adhesive resin may have an optical density of 1.4 or more at a thickness of 0.33 mm.

According to still another aspect of the present invention, the liquid crystal panel may be disposed as a transparent adhesive layer on the back surface of the cover glass.

According to still another aspect of the present invention, the step of applying the light-shielding adhesive resin to the light-shielding adhesive resin application space and fixing the liquid crystal panel and the backlight unit includes the steps of: providing a first adhesive resin layer Applying; Curing the first adhesive resin layer; Applying a second adhesive resin layer to cover the first adhesive resin layer; And curing the second adhesive resin layer.

According to another aspect of the present invention, the optical density value of the first adhesive resin layer may be higher than the optical density value of the second adhesive resin layer.

According to another aspect of the present invention, the first adhesive resin layer may be composed of a wet resin and the second adhesive resin layer may be composed of a photocurable resin.

According to an aspect of the present invention, there is provided a liquid crystal display comprising: a cover glass; A cover glass frame disposed on an outer back surface of the cover glass; A liquid crystal panel disposed on a rear surface of the cover glass so as to be spaced apart from the cover glass frame; A backlight unit disposed on a rear surface of the liquid crystal panel so as to be spaced apart from the cover glass frame; And a light blocking adhesive resin disposed in the light shielding adhesive application space between the liquid crystal panel and the backlight unit and the cover glass frame to fix the liquid crystal panel and the backlight unit and shield light.

According to another aspect of the present invention, the width of the space for applying the light-shielding adhesive resin may be longer as the distance from the cover glass is increased.

According to another aspect of the present invention, the backlight unit includes a lower cover for receiving the light source and the light guide plate and contacting the back surface of the liquid crystal panel, and the light-shielding adhesive resin may be configured to contact the side surface of the lower cover.

According to another aspect of the present invention, the lower cover may be made of a white plastic material.

According to another aspect of the present invention, the backlight unit includes a light guide and a panel guide disposed outside the light guide plate to support the liquid crystal panel, wherein the light-shielding adhesive resin includes a liquid crystal display Device.

According to another aspect of the present invention, the light-shielding adhesive resin may include a first adhesive resin layer and a second adhesive resin layer, respectively, having different optical density values.

According to another aspect of the present invention, the light-shielding adhesive resin may include a first adhesive resin layer and a second adhesive resin layer, respectively, having different curing conditions.

According to another aspect of the present invention, the first adhesive resin layer may be composed of a wet resin cured by moisture, and the second adhesive resin layer may be composed of a light curable resin which is cured by ultraviolet rays.

The details of other embodiments are included in the detailed description and drawings.

In the present invention, the liquid crystal panel and the backlight unit are fixed to each other through the light-shielding adhesive resin applied to the sides of the liquid crystal panel and the backlight unit so that a separate adhesive tape can be omitted, thereby reducing the bezel size of the liquid crystal display There is an effect that light counting between the side surface of the liquid crystal panel and the junction space between the liquid crystal panel and the backlight unit can be minimized.

The present invention can improve the durability of the liquid crystal display device by alleviating the external impact applied to the liquid crystal display device by fixing the liquid crystal panel and the backlight unit to each other through the liquid crystal panel and the light shielding adhesive resin coated on the side surface of the backlight unit .

The effects according to the present invention are not limited by the contents exemplified above, and more various effects are included in the specification.

1 is a schematic exploded perspective view of a liquid crystal display device according to an embodiment of the present invention.
2 is a schematic cross-sectional view illustrating a liquid crystal display device according to an embodiment of the present invention.
FIG. 3 is a diagram showing the synthesis of an acrylic copolymerization resin in a light-shielding adhesive resin according to an embodiment.
4A to 4C are diagrams showing the synthesis of a urethane acrylate oligomer as an example of an acrylic copolymerization resin in a light-shielding adhesive resin according to an embodiment of the present invention.
5 is a schematic cross-sectional view illustrating a liquid crystal display device according to an embodiment of the present invention.
6 is a cross-sectional view illustrating a liquid crystal display device in which a light blocking adhesive resin is applied to the outer surfaces of a liquid crystal panel and a backlight unit according to an embodiment of the present invention, and a liquid crystal panel and a backlight unit are fixed.
FIG. 7 is a view for explaining a schematic process of manufacturing the liquid crystal display device shown in FIG.
8 is a view for explaining a method of manufacturing a liquid crystal display device in which a width of a liquid crystal panel and a light shielding adhesive resin coated on a side surface of a backlight unit are adjusted by using a block jig and a separate cutting step is omitted.
9 is a view for explaining a method of manufacturing a liquid crystal display device using a plurality of adhesive resin application processes and a plurality of curing processes, according to another embodiment of the present invention.
10 is a cross-sectional view illustrating a liquid crystal display device in which a light blocking adhesive resin is applied to a side surface of a liquid crystal panel and a backlight unit and a liquid crystal panel and a backlight unit are fixed according to another embodiment of the present invention.
11 is a view for explaining a schematic manufacturing method for manufacturing the liquid crystal display device shown in FIG.
FIG. 12 is a view for explaining a method of manufacturing a liquid crystal display device using a plurality of adhesive resin application processes and a plurality of curing processes, according to another embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

The shapes, sizes, ratios, angles, numbers, and the like disclosed in the drawings for describing the embodiments of the present invention are illustrative, and thus the present invention is not limited thereto. Like reference numerals refer to like elements throughout the specification. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Where the terms "comprises", "having", "done", and the like are used in this specification, other portions may be added unless "only" is used. Unless the context clearly dictates otherwise, including the plural unless the context clearly dictates otherwise.

In interpreting the constituent elements, it is construed to include the error range even if there is no separate description.

In the case of a description of the positional relationship, for example, if the positional relationship between two parts is described as 'on', 'on top', 'under', and 'next to' Or " direct " is not used, one or more other portions may be located between the two portions.

An element or layer is referred to as being another element or layer "on ", including both intervening layers or other elements directly on or in between.

Although the first, second, etc. are used to describe various components, these components are not limited by these terms. These terms are used only to distinguish one component from another. Therefore, the first component mentioned below may be the second component within the technical spirit of the present invention.

Like reference numerals refer to like elements throughout the specification.

The sizes and thicknesses of the individual components shown in the figures are shown for convenience of explanation and the present invention is not necessarily limited to the size and thickness of the components shown.

It is to be understood that each of the features of the various embodiments of the present invention may be combined or combined with each other, partially or wholly, technically various interlocking and driving, and that the embodiments may be practiced independently of each other, It is possible.

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

1 is a schematic perspective view for explaining a configuration of a liquid crystal display device according to an embodiment of the present invention.

The liquid crystal display device 100 includes a liquid crystal panel PNL in which pixels are arranged in a matrix and outputs an image, a backlight unit (not shown) disposed on the rear surface of the liquid crystal panel PNL, (BLU).

The liquid crystal panels PNL are arranged in a cell gap between the upper substrate 102 and the lower substrate 104 and between the upper substrate 102 and the lower substrate 104 by sealants so as to face each other and maintain a uniform cell gap And a liquid crystal layer LC formed thereon.

A common electrode and a pixel electrode are formed on the liquid crystal panel PNL in which the upper substrate 102 and the lower substrate 104 are bonded together to apply an electric field to the liquid crystal layer LC. When the voltage of the data signal applied to the pixel electrode is controlled, the liquid crystal of the liquid crystal layer LC is rotated by dielectric anisotropy according to an electric field between the common electrode and the pixel electrode, The image is displayed. A polarizing plate (not shown) is attached to the outside of the liquid crystal panel PNL thus configured to polarize light passing through the liquid crystal panel PNL.

The backlight unit BLU will be described in detail. A light source 108 for generating light is disposed on one side of a light guide plate (LGP) 106. The light source 108 may be implemented as a light emitting diode (LED). However, the light source is not limited thereto, and may be implemented as a cold cathode fluorescent lamp (CCFL), an external electrode fluorescent lamp, or other various light emitting devices in place of the light emitting diode .

The light incident on the side surface of the light guide plate 106 is uniformly transmitted to the liquid crystal panel 106 through the optical sheet 110 on which the light guide plate 106 and the upper surface of the light guide plate 106 are disposed. PNL). In Fig. 1, the optical sheet 110 is shown as a plurality of sheets including a diffusion sheet, a prism sheet, and the like. However, the optical sheet 110 may be provided in the form of a single film including them. 1, the light source is disposed under the active area A / A to emit light in the direction of the liquid crystal panel PNL, although the light source is shown in an edge-type manner in which the light source is disposed in the bezel area and emits light toward the light guide plate 106. [ Or the like. The backlight unit (BLU) may include a driving circuit for driving the light source.

A liquid crystal panel (PNL) is seated on the upper part of the backlight unit (BLU). To this end, the liquid crystal display 100 may be provided with a panel guide 114. The panel guide 114 is disposed on the outer periphery of the components of the backlight unit BLU to support the liquid crystal panel PNL and to position the liquid crystal panel PNL and the backlight unit BLU Can play a role. In some embodiments of the present invention, the panel guide 114 in the liquid crystal display 100 may be omitted in order to reduce the size of the bezel of the liquid crystal display 100.

The components of the backlight unit (BLU) are accommodated in a cover bottom 112. That is, the light guide plate 106, the light source 108, and the optical sheet 110 of the backlight unit BLU are disposed inside the outer side wall 112_W of the lower cover 112. The outer side wall 112_W of the lower cover 112 may be configured to support the liquid crystal panel PNL like the panel guide 114. [ The panel guide 114 may be formed at a lower height so that the outer side wall 112_W of the lower cover 112 does not contact the liquid crystal panel PNL, So that the light guide plate 106 and the light source 118 are accommodated in the panel guide 114.

  The liquid crystal panel (PNL) and the backlight unit (BLU) are coupled to each other to constitute the liquid crystal display device (100). A cover glass 116 is disposed on an upper portion of the liquid crystal panel PNL. The cover glass 116 is configured to protect the components of the liquid crystal panel PNL and the backlight unit BLU from external impact, foreign matter, or moisture. The cover glass 116 may be made of a material having excellent rigidity or a material such as plastic which can be thermoformed and has good processability. Also, in some embodiments of the present invention, the cover glass frame 120 may be attached to the inner surface of the cover glass. The cover glass frame 120 may be omitted from the liquid crystal display device 100 as in the case of the panel guide 114. [

The liquid crystal display device 100 may be provided with a pressure sensor P_Sensor for measuring the pressure applied to the liquid crystal display device 100. The pressure sensor (P_Sensor) may be configured to measure a pressure applied to the liquid crystal display device (100) when the user inputs a touch command on the liquid crystal display device (100). In some embodiments of the present invention, the pressure sensor (P_Sensor) may be provided on the back surface of the liquid crystal panel (PNL) or on the back surface of the backlight unit (BLU). In some embodiments of the present invention, a part of the pressure sensor (P_Sensor) may be disposed on the back surface of the liquid crystal panel (PNL) and another part of the pressure sensor (P_Sensor) may be provided on the back surface of the backlight unit (BLU).

2 is a schematic cross-sectional view illustrating a liquid crystal display device in which a liquid crystal panel and a backlight unit are coupled according to an embodiment of the present invention.

2, the liquid crystal panel PNL is attached to the outer surface of the upper substrate 102, the lower substrate 104, the liquid crystal layer LC, the sealant 116, and the upper substrate 102 and the lower substrate 104 And an upper polarizer POL_U and a lower polarizer POL_L.

The upper substrate 102 and the lower substrate 104 are substrates for supporting various components constituting the liquid crystal panel PNL and one of the upper substrate 102 and the lower substrate 104 is provided with a plurality of thin film transistors Thin A thin film transistor array composed of a thin film transistor (TFT), a pixel electrode electrically connected to the thin film transistor, and a common electrode arranged against the pixel electrode. A substrate provided with a thin film transistor array in this specification may be referred to as a thin film transistor substrate. The specific structure of the thin film transistor substrate may be a driving mode used by the liquid crystal panel PNL such as TN (Twisted Nematic) mode, VA (Vertical Alignment) mode, IPS (In plane switching) mode, FFS switching mode, and the like.

One of the upper substrate 102 and the lower substrate 104 is provided with a color filter layer selectively transmitting light of a specific wavelength. A substrate provided with a color filter layer may be referred to as a color filter substrate. In one embodiment, the upper substrate 102 may comprise a color filter substrate and the lower substrate 104 may comprise a thin film transistor substrate. However, the liquid crystal panel (PNL) of the present invention is not limited thereto, and the upper substrate 102 may be a thin film transistor substrate and the lower substrate 104 may be a color filter substrate. The thin film transistor array and the color filter layer may be provided on the same substrate.

The upper polarizer POL_U is attached to the upper surface of the upper substrate 102 and the lower polarizer POL_L is attached to the lower surface (back surface) of the lower substrate 104. The liquid crystal panel PNL is formed by the combination of the liquid crystal alignment by the electric field generated by the voltage difference applied to the pixel electrode and the common electrode and the combination of the upper polarizer POL_U and the lower polarizer POL_L. Is controlled.

The cover glass 116 covers the liquid crystal panel PNL and the backlight unit BLU and is configured to protect components of the liquid crystal panel PNL and the backlight unit BLU from external shocks, For example, the cover glass 116 may be made of a material having excellent rigidity or a material capable of being thermoformed and having good workability. The cover glass 116 is arranged to extend to the active area A / A and the bezel area B / A surrounding the active area A / A. The cover glass 116 may be attached to the outer surface of the upper polarizer POL_U using an optical clear adhesive (OCA) or an optical clear resin (OCR). Although not shown, a retarder film may be additionally provided between the upper polarizer POL_U and the cover glass 116 to convert a two-dimensional image into a three-dimensional image.

The liquid crystal display 100 shown in FIG. 2 is provided with a panel guide 114. When the panel guide 114 is provided in the liquid crystal display 100, the light guide plate 106 and the optical sheet 110 of the backlight unit BLU are separated from the panel guide 114 and the outer side wall 112_W ). ≪ / RTI > 2, when the outer side wall 112_W of the lower cover 112 supports the liquid crystal panel PNL together with the panel guide 114, the liquid crystal panel PNL is formed on the outer side wall 112_W and the panel guide 114, The surface facing the panel PNL can be utilized as a bonding region J in which an adhesive resin for fixing the liquid crystal panel PNL and the backlight unit BLU to each other is disposed.

In order to reduce the size of the bezel area in the liquid crystal display device 100, the width of the panel guide 114 may be reduced or the panel guide 114 may not be used. In this case, the junction area J of the liquid crystal panel PNL and the backlight unit BLU is reduced. As the size of the adhesive member in the form of a tape decreases, the adhesive force is reduced, and it is difficult to handle. Therefore, it is difficult to arrange the adhesive tape at the precise position in the junction area J, which is reduced between the liquid crystal panel PNL and the backlight unit BLU, and a defect that the liquid crystal panel PNL and the backlight unit BLU are not bonded is generated.

For example, in order to realize a bezel size of 1 millimeter (mm) or less, the width of the junction region J of the real liquid crystal panel PNL and the back-ride unit 220 may be less than 1 mm. When an adhesive tape having a width of 1 mm or less is used as the width of the bonding region J, it is inevitable that the time required for the bonding process and the yield decrease. Of course, the width of the adhesive tape can be increased to improve the convenience of the bonding process, process time and yield, but this leads to an increase in the size of the bezel. Therefore, in one embodiment of the present invention, at least a part of the bonding region J between the liquid crystal panel PNL and the backlight unit BLU is interposed between the liquid crystal panel PNL and the backlight unit BLU).

More specifically, the light-shielding adhesive resin 118 is interposed between the liquid crystal panel (PNL) and the panel guide 114 and between the liquid crystal panel (PNL) and the outer side wall 112_W of the lower cover 112, PNL) and the backlight unit (BLU). The light-shielding adhesive resin 118 may be applied onto the bonding region J through a nozzle. Therefore, the width W1 of the light-shielding adhesive resin 118 can be arranged on the junction region J with a small width according to the size of the nozzle (for example,? 0.1 mm). At this time, the width W1 of the light-shielding adhesive resin 118 is equal to the sum of the width W1a of the lower cover outer side wall 112_W and the width W1b of the panel guide 114 constituting the junction region J It can be shorter. When the panel guide 114 is not provided and the surface of the outer side wall 112_W facing the liquid crystal panel PNL is used as the joining region J, the width W1 of the light-shielding adhesive resin 118 is smaller than the width W1 of the outer side wall The width W1a of the first and second wirings 112 and 112_W. For example, the width of the light-shielding adhesive resin 118 disposed on the junction region J may be 0.5 mm or less.

The light shielding adhesive resin 118 serves to adhere the liquid crystal panel PNL and the backlight unit BLU to each other and to suppress the light leakage phenomenon in which the light leaks from the junction region J of the liquid crystal panel PNL and the backlight unit BLU . As the light-shielding adhesive resin 118, a photo-curing resin, a thermosetting resin, a hot-melt resin, a wet resin, or a combination thereof may be used.

In the case of the photocurable adhesive resin, the liquid crystal panel (PNL) and the backlight unit (BLU) can be cemented together by ultraviolet (UV) curing. In the case of thermosetting resin, the applied adhesive resin can be cured by heating. In the case of Hot-Melt resin, it can be applied at a high temperature to cool and cure. In the case of wet resins, it can be cured in response to moisture contained in the air.

FIG. 3 is a diagram showing the synthesis of an acrylic copolymerization resin as an example of a light-shielding adhesive resin according to an embodiment of the present invention.

The light-shielding adhesive resin 118 according to an embodiment of the present invention may be composed of a base resin, a light shielding material, and additives. Here, the additive may include a photo-initiator, a curing accelerator, a foaming agent, a thixotropic agent, and the like. The base resin may be included in the range of 80 to 90% by weight with respect to the entire light-shielding adhesive resin 118. When the light-shielding adhesive resin 118 is a photocurable adhesive resin, the light-shielding adhesive resin 118 may contain a photoinitiator in an amount of 1 to 5% by weight based on the entire light-shielding adhesive resin 118.

The base resin may be composed of an acrylic copolymer resin, but is not limited thereto. For example, a base resin composed of an acrylate-based resin can be obtained by reacting a composition comprising a crosslinkable monomer and a reactive oligomer by irradiating light such as ultraviolet rays.

4A to 4C are diagrams showing the synthesis of a urethane acrylate oligomer as an example of an acrylic copolymerization resin in an adhesive resin according to an embodiment of the present invention.

Examples of the crosslinkable monomer include 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, pentaerythritol triacrylate, Ethylene glycol diacrylate, dipentaerythritol diacrylate, sorbitol triacrylate, bisphenol A diacrylate derivatives, trimethylpropane triacrylate, and methacrylates thereof, such as ethylene glycol diacrylate, ethylene glycol diacrylate, Lt; / RTI >

The synthesis of the urethane acrylate series which is a reactive oligomer can be carried out by first synthesizing polyol and diisocyanate to react with each other to form an isocyanate as shown in FIG. 3A to FIG. 3C, Can be prepared by reacting an acrylate containing a hydroxyl group with an isocyanate.

The acrylate-based resin may be at least one selected from the group consisting of 2-ethylhexyl acrylate, tridecyl methacrylate, nonylphenol ethoxylate monoacrylate, beta-carboxyethyl acrylate, isobornyl acrylate, tetrahydroperfuryl acrylate, Methacrylate, methacrylate, 4-butylcyclohexyl acrylate, dicyclopentenyl acrylate, dithiocapentenyloxyethyl acrylate, ethoxyethyl acrylate, ethoxylated monoacrylate. Or more.

The light blocking material is a material for preventing light from leaking out. That is, the light shielding material is a key material for performing light shielding function of the light shielding adhesive resin 118. The light blocking material comprises colored particles. As the colored particles, particles such as carbon black can be used, but not always limited thereto, and particles of various colors capable of absorbing or blocking light can be used. As an example, titanium oxide (TiO ₂ ) particles can be used as colored particles. The particle size of the colored particles is preferably 1000 nm or less. If the particle size of the colored particles exceeds 1000 nm, the sealing wear of the nozzle may occur when the light-shielding adhesive resin 118 is applied.

Table 1 below shows the shading ratio and the optical density value according to the thickness of the light-shielding adhesive resin 118 and the carbon content.

Carbon content 0.2% 0.4% 0.5% 0.6% 0.8% 1.0% thickness
(탆) Transmittance
(O. D value ) Transmittance
(O. D value ) Transmittance
(O. D value ) Transmittance
(O. D value ) Transmittance
(O. D value ) Transmittance
(O. D value ) 100 64.88 37.12
(0.43) 30.16
(0.52) 26.34
(0.58) 16.48
(0.78) 9.87
(1.01) 200 47.46 21.30
(0.67) 15.23
(0.82) 9.73
(1.01) 5.83
(1.23) 3.08
(1.51) 300 33.84 10.21
(0.99) 7.10
(1.15) 3.36
(1.47) 1.18
(1.93) 0.34
(2.47) 400 26.86 4.70
(1.32) 2.72
(1.57) 1.32
(1.88) 0.21
(2.68) 0.06
(3.22) 500 20.46 2.67
(1.57) 0.96
(2.01) 0.25
(2.60) 0.12
(2.92) 0.02
(3.70) 600 15.96 1.18
(1.92) 0.25
(2.6) 0.07
(3.15) 0.01
(4.00) 0
(8) 700 9.65 0.51
(2.29) 0.19
(2.72) 0.05
(3.30) 0
(8) 0
(8) 800 6.71 0.37
(2.43) 0.10
(3.00) 0.03
(3.52) 0
(8) 0
(8) 900 6.68 0.15
(2.82) 0.02
(3.70) 0
(8) 0
(8) 0
(8)

The higher the content of colored particles in the light-shielding adhesive resin 118, the better the shielding property of the light-shielding adhesive resin 118. Also, the OD value of the light-shielding adhesive resin 118 depends on the thickness of the light-shielding adhesive resin 118 at the portion where the light-shielding adhesive resin 118 is applied to the liquid crystal display device. By applying the light-shielding adhesive resin 118 having a higher colored particle content to a higher thickness, it is possible to provide the light-shielding adhesive resin 118 having a higher OD value. However, since the transmittance of the UV light is lower as the OD level is increased, there arises a problem that the UV curing process becomes difficult, for example, the UV light irradiation amount and the UV light irradiation time must be increased in order to cure the light-shielding adhesive resin 118. Therefore, the content of the light shielding material in the light-shielding adhesive resin 118 included in the liquid crystal display device is determined by the OD value required to shield the light shield at the position where the light shielding adhesive resin 118 is applied, the thickness of the light shielding adhesive resin 118 As well as the curing energy required for curing the light-shielding adhesive resin 118 and the curing time.

In order to prevent light leakage in the liquid crystal display device, the light-shielding adhesive resin 118 preferably has an OD value (about 10% transmittance) of 1.0 or more. In order to provide such an OD value, the light blocking material may be included in the range of 0.2 to 2 wt% (wt) with respect to the entire light blocking adhesive resin 118. More preferably, the light-shielding material is contained in the range of 0.4 to 1 wt%, more preferably 0.4 to 0.8 wt% of the light-shielding adhesive resin 118, . ≪ / RTI >

As described above, the content of the light blocking material contained in the light blocking adhesive resin 118 may vary depending on the thickness of the light blocking adhesive resin 118 in the liquid crystal display device. For example, as shown in TABLE 1, in the case of the light-shielding adhesive 118 coated on a liquid crystal display device at a thickness of 100 μm or more, the content of the light shielding material may be at least 1.0 wt% or more. Further, in the case of the light-shielding adhesive 118 coated with a thickness of 200 탆 or more, the content of the light shielding material may be at least 0.6 wt% or more. The light-shielding adhesive 118 applied at a thickness of 300 microns or more is included at 0.4 weight (wt)% to 0.8 weight (wt)% and has an OD value (transmittance between 92.9% and 98.8%) between 1.15 and 1.93 . In this case, the light-shielding adhesive resin 118 can be cured for 30 seconds or less by using UV light having an energy of about 800 mJ / cm 2.

As the light shielding material, a plate-like particle may be further included, and in this case, the light leakage prevention effect may be increased. That is, when the plate-like particles are included, the light transmission is blocked by the plate-like particles, whereby the light-leakage prevention effect can be obtained more efficiently. Particularly, the plate-like particles can be arranged while maintaining their directionality by shrinkage during the curing process, and thus can perform an effective light-shielding function. In addition, a subsidiary effect in which the arrangement of the colored particles is uniformly arranged by the plate-like particles can be obtained. The plate-like particles may be made of a metal oxide such as aluminum oxide (Al ₂ O ₃ ), but are not limited thereto. Like the above-mentioned colored particles, the particle size of the platelet-shaped particles is preferably 1000 nm or less. When the plate-like particles are included, the plate-like particles are preferably included in the range of 2 to 3 wt% with respect to the entire light-shielding adhesive resin 118. The plate-like particles are not necessarily included, and in some cases, the plate-shaped particles may be omitted, and the light-shielding function can be realized with only the colored particles.

As the light blocking material, a photosensitive material which changes to black in a transparent state may be included. For example, a photosensitive material such as silver bromide, silver iodide, or silver chloride may be included as a light shielding material. In this case, when the light-shielding adhesive resin 118 is cured by the UV light, the light-shielding adhesive resin 118 turns black in response to the UV light, thereby blocking the light.

The curing accelerator is a material for facilitating curing of the base resin. The curing accelerator may include ultraviolet rays and diffusion particles. When the ultraviolet ray-diffusing particles are included, the ultraviolet rays irradiated upon the ultraviolet ray curing can be diffused in various angles in the ultraviolet ray diffusing particle, and thus the base resin can be irradiated with a larger amount of ultraviolet rays, .

The ultraviolet diffusing particles may be spherical or amorphous particles having a refractive index of 1.5 or more and high refractive index. Particularly, the ultraviolet light-diffusing particles are preferably made of a material having a refractive index higher than that of the base resin by 0.01 or more, and preferably 0.05 or more, in order to obtain a diffusion effect of ultraviolet light. Such ultrafine particle diffusion particles may be made of polystyrene (PS), polycarbonate (PC), or polyethylene terephthalate (PET), but the present invention is not limited thereto.

The ultraviolet diffusing particles may comprise a blue pigment. When the blue pigment is contained, the transmittance of the ultraviolet ray irradiated for ultraviolet curing is increased, and the curing of the base resin can be promoted. That is, when the blue pigment is included, the transmittance of ultraviolet rays can be improved in a wavelength range of about 400 nm, more specifically, in a wavelength range of 380 nm to 420 nm, and thus an effect that a larger amount of ultraviolet light is irradiated to the base resin can be obtained.

The hardening accelerator may be included in the range of 0.1 to 5% by weight based on the entire light-shielding adhesive resin 118. The particle size of the ultraviolet diffusion particles is preferably 1000 nm or less to prevent packing wear of the nozzle.

The foaming agent generates fine bubbles on the surface of the light-shielding adhesive resin 118 through curing to induce irregular reflection of light, thereby realizing a matte effect. For example, the light-shielding adhesive resin 118 may include an azodicarbonamide (ADCA) series blowing agent. Such a foaming agent may be added to the light-shielding adhesive resin 118 by attaching a hydrophilic functional group.

These blowing agents generate gas during the course of the polyaddition reaction to generate microbubbles. When the azodicarbonamide blowing agent is added to the polyol in the synthesis of the above-mentioned reactive oligomer, these substances react with the isocyanate to generate microbubbles of carbon dioxide or carbon monoxide.

The foaming agent may be included in the range of 0.1 to 5 wt% with respect to the entire light-shielding adhesive resin 118.

For reference, the weight percentage of the materials constituting the light-shielding adhesive resin 118 should theoretically be 100% by weight in total. However, since a small amount of impurities may exist in the light-shielding adhesive resin 118, The sum may be less than 100% by weight total.

The light-shielding adhesive resin 118 also serves to maintain the fluidity of the liquid crystal panel (PNL) within a certain range in addition to bonding the liquid crystal panel (PNL) and the backlight unit (BLU) and preventing light leakage. The liquid crystal panel (PNL) can be moved in accordance with the pressure within a certain range, thereby providing an effect of alleviating the impact on the pressure applied to the liquid crystal panel (PNL) from the outside. At this time, the light-shielding adhesive resin 118 interposed in the bonding region J between the liquid crystal panel PNL and the backlight unit BLU preferably has a modulus of 3 MPa to 10 MPa.

The liquid crystal display device 100 may be provided with a pressure sensor. When a pressure sensor is provided in the liquid crystal display (LCM), the liquid crystal panel (PNL) is moved by a predetermined distance by the force of the user pressing the liquid crystal panel (PNL) LCM), it is possible to realize a pressure sensor based on a change in the position of the liquid crystal panel (PNL), or to make the feeling of use of the pressure sensor more natural. To this end, the thickness of the light-shielding adhesive resin 118 interposed between the liquid crystal panel PNL and the backlight unit BLU may be between 0.02 mm and 1 mm. The liquid crystal panel PNL and the backlight unit BLU are provided in the bonding region J so as not to increase the thickness of the liquid crystal display device 100 significantly while providing the function of securing the adhesive force, The thickness of the light-shielding adhesive resin 118 may be between 0.02 mm and 0.5 mm, and more preferably between 0.02 mm and 0.15 mm.

For convenience of attaching the liquid crystal panel PNL and the backlight unit BLU, the thixotropy of the light-shielding adhesive resin 118 on the bonding region between the backlight units BLU is preferably between 3 and 6 , And the viscosity of the light-shielding adhesive resin 118 is preferably 20,000 cps to 45,000 cps. An organic thixotropic agent may be included as an additive in order to ensure thixotropy of the light-shielding adhesive resin 118. For example, the light-shielding adhesive resin 118 may include an organic bentonite series thixotropic agent.

As an example of the light-shielding adhesive resin 118 that can be used in the liquid crystal display device according to an embodiment of the present invention, the thixotropy index of the light-shielding adhesive resin 118 is 5.2 (measured by Brookfield LVDV- +) , The viscosity may be 42,100 cps (measured by Brookfield LVDV- +), and may have a linear shrinkage of 0.8% at curing.

When the light guide plate 106 or the optical sheet 110 included in the backlight unit BLU moves due to an external impact, defects such as a bright line may occur in the active area A / A. Therefore, the optical sheet 110 of the backlight unit BLU can be fixed in contact with the light-shielding adhesive resin 118 at a part of the junction area J of the liquid crystal panel PNL and the backlight unit BLU. For example, when the active area A / A of the liquid crystal display device 100 is formed in a rectangular shape, the optical sheet 110 of the backlight unit BLU is positioned at the top / bottom / left / right of the liquid crystal display 100, And may be fixed by the light shielding adhesive resin 118 at least on one side of the right and left sides, extending to the junction region J of the liquid crystal panel PNL and the backlight unit BLU as shown in FIG.

5, the optical sheet 110 has a fixing portion extending from at least one side of the liquid crystal display device 100 so as to overlap with a part of the junction region J of the liquid crystal panel PNL and the backlight unit BLU One or more may be included. The light shielding adhesive 118 interposed in the junction region J of the liquid crystal panel PNL and the backlight unit BLU is also in contact with the optical sheet 110 extending in the junction region J, The backlight unit BLU is bonded and the optical sheet 110 is fixed. The light shielding adhesive 118 can fix the optical sheet 110 while covering the step even if there is a step due to the thickness of the optical sheet 110 in the joint region J as shown in FIG.

When the optical sheet 110 is extended to a part of the joining region J, it is difficult to fill the step generated due to the thickness of the optical sheet 123 with a tape-like adhesive member (e.g., adhesive tape) having low thixotropy. Therefore, it is difficult to prevent the void space between the liquid crystal panel (PNL) and the backlight unit (BLU) from occurring and the adhesive strength of the adhesive tape is reduced. The adhesive sheet in the form of a tape is extended to the upper portion of the optical sheet 110 without extending the optical sheet 110 to the junction region J of the liquid crystal panel PNL and the backlight unit BLU, The liquid crystal panel (PNL) is lifted due to the thickness of the adhesive tape, so that a void is formed between the liquid crystal panel (PNL) and the optical sheet (110). Also, as the width of the adhesive tape is increased, the bezel size of the liquid crystal display device 100 is increased. Therefore, it is preferable to use the light-shielding adhesive resin 118 as shown in Fig. 5, rather than using a tape-shaped adhesive member.

In some embodiments of the present invention, the light-shielding adhesive resin 118 may be applied from the side of the liquid crystal panel (PNL) to the side of the backlight unit (BLU) to fix them to each other. A bonding region J (see FIG. 1) is provided between the liquid crystal panel PNL and the backlight unit BLU at a portion where the light-shielding adhesive resin 118 is applied to the side surfaces of the liquid crystal panel PNL and the backlight unit BLU in the liquid crystal display device 100 The light shielding adhesive resin 118 may be disposed or omitted. In other words, a part of the bonding region J is interposed between the liquid crystal panel (PNL) and the backlight unit (BLU) of the liquid crystal display device 100, as shown in FIG. 2 or 5, And the light-shielding adhesive resin 118 may not be interposed in another part of the bonding region J.

6 illustrates that the light blocking adhesive 118 is applied to the external sides of the liquid crystal panel PNL and the backlight unit BLU to form the liquid crystal panel PNL and the backlight unit BLU Sectional view showing a fixed liquid crystal display device 100. Fig. Referring to FIG. 6, the upper polarizer POL_U of the liquid crystal panel PNL has an extension POL_EX longer than the lower end of the lower polarizer POL_L by a predetermined width W2a. The light-shielding adhesive resin 118 is disposed on the inner side of the extension POL_EX of the upper polarizer POL_U (i.e., the direction of the droplet display panel), the side of the upper substrate 102, the side of the lower substrate 104, POL_L and at least a part of the side surface of the backlight unit BLU to fix the liquid crystal panel PNL and the backlight unit BLU. The external side of the backlight unit BLU may be an external side of the lower cover exterior side wall 112_W or an external side of the panel guide 114. [ 6, the panel guide 114 is omitted in order to reduce the size of the bezel of the liquid crystal display device 100 and the light shielding adhesive resin 118 is attached to the lower cover side wall 112_W of the backlight unit BLU. Respectively. However, in some other embodiments of the present invention, the light-shielding adhesive resin 118 may be arranged to contact the lower cover side wall 112_W of the backlight unit BLU even when the panel guide 114 is not omitted. The panel guide 114 may be exposed to the outside of the backlight unit BLU and the light shielding adhesive resin 118 may be in contact with the panel guide 114. [

The adhesion of the light shielding adhesive 118 to the outer surface of the liquid crystal panel PNL and the outer surface of the backlight unit BLU and the shear force of the light shielding adhesive 118 after curing the light shielding adhesive 118, The light shielding adhesive resin 118 may be omitted in the junction region J between the backlight unit PNL and the backlight unit BLU. 6, when the liquid crystal panel PNL and the backlight unit BLU can secure sufficient fixing force only by the light-shielding adhesive resin 118 applied to the sides of the liquid crystal panel PNL and the backlight unit BLU, The light-shielding adhesive resin 118 in the inter-junction region J can be omitted.

When the shielding adhesive resin 118 is not required in the junction area J between the liquid crystal panel PNL and the backlight unit BLU, the application of the shielding adhesive resin 118 between the liquid crystal panel PNL and the backlight unit BLU The width of the portion supporting the liquid crystal panel PNL in the backlight unit BLU can be designed to be narrower. For example, the width of the panel guide 114 in the backlight unit (BLU) can be reduced. 6, the panel guide 114 may be omitted to reduce the size of the bezel and the light-shielding adhesive resin 118 may extend from the side of the liquid crystal panel PNL to at least a part of the lower cover side wall 112_W, So that the liquid crystal panel PNL and the backlight unit BLU can be fixed.

For example, referring to FIG. 1, a liquid crystal display device 100 having four sides will be described. As shown in FIG. 6, the first side bezel region and the second side bezel region of the liquid crystal display device 100 The light blocking adhesive resin 118 is applied to the side surfaces of the liquid crystal panel PNL and the backlight unit BLU and the third side bezel region and the fourth side bezel region of the liquid crystal display device 100 are coated with the light- The light-shielding adhesive resin 118 can be interposed between the junction region J of the liquid crystal panel PNL and the backlight unit BLU. Shielding adhesive resin 118 is applied to the side surfaces of the liquid crystal panel PNL and the backlight unit BLU as the first to third side bezel areas of the liquid crystal display device 100, The shading adhesive resin 118 may be interposed between the junction region J of the liquid crystal panel PNL and the backlight unit BLU in the fourth side bezel region of the apparatus 100 as shown in FIG. If the liquid crystal panel PNL has a circular shape other than a rectangular shape or the like, the light blocking adhesive resin 118 may be bonded to the liquid crystal panel PNL, The light blocking adhesive resin 118 may be applied to the side surfaces of the liquid crystal panel PNL and the backlight unit BLU as shown in FIG. 6, which is interposed between the junction regions J of the backlight unit BLU.

Even in the case where the light blocking adhesive resin 118 is applied to the side surfaces of the liquid crystal panel PNL and the backlight unit BLU in some bezel areas, it is possible to provide a more robust bonding between the liquid crystal panel PNL and the backlight unit BLU, The light shielding adhesive resin 118 may further be interposed in the junction region J between the liquid crystal panel PNL and the backlight unit BLU.

The width of the light-shielding adhesive resin 118 on the side surfaces of the liquid crystal panel PNL and the backlight unit BLU depends on the thickness of the light-shielding adhesive resin 118, the viscosity, the surface energy of the application area, And the time from the start to the end. The light blocking adhesive resin 118 is used to fill the curvature (i.e., stepped portion) that may exist between the liquid crystal panel PNL and the backlight unit BLU and various curvatures on the outer surface of the liquid crystal panel PNL and the backlight unit BLU. Has a viscosity of 20,000 to 45,000 centipoises. The light shielding adhesive resin 118 has a thickness of 3 to 6 to prevent the light shielding adhesive 118 from penetrating into the backlight unit BLU beyond the junction region J of the liquid crystal panel PNL and the backlight unit BLU Lt; / RTI > index. For example, a light-shielding adhesive resin 118 having a viscosity of 40,000 cps to 45,000 cps and a thixotropy index of 4.5 to 5.5 may be applied to outer surfaces of the liquid crystal panel (PNL) and the backlight unit (BLU). It is preferable that the light-shielding adhesive resin 118 can be cured within 30 seconds under a curing condition of 800 mJ / cm 2 or more (100 mW / cm 2).

The shading adhesive resin 118 is bonded to the extended portion POL_EX of the upper polarizer POL_U from the side of the liquid crystal panel PNL and the backlight unit BLU in a state where the relatively shrunk adhesive property is high before the shading adhesive resin 118 is cured It can flow down. Accordingly, the width of the light-shielding adhesive resin 118 on the sides of the liquid crystal panel PNL and the backlight unit BLU can be increased, which ultimately increases the size of the bezel area of the liquid crystal display device 100.

Therefore, a portion exceeding the width (eg, 0.5 mm) of the light-shielding adhesive resin 118 for maintaining the bonding between the liquid crystal panel PNL and the backlight unit BLU and preventing light leakage is grinded, Or may be cut (eg, wheel cutting, laser cutting) and removed from the liquid crystal display 100. At this time, the extended portion POL_EX of the upper polarizing plate POL_U corresponding to the shielding adhesive resin 118 removed from the liquid crystal display device 100 may be removed from the liquid crystal display device 100, The outer side surface of the substrate 100 may have a cut shape as in the embodiment of FIG.

FIG. 7 is a view for explaining a schematic process of manufacturing the liquid crystal display device 100 shown in FIG. Referring to Fig. 7, a method 10 for manufacturing a liquid crystal display device 100 includes a panel process step 12 for manufacturing a liquid crystal panel PNL. The liquid crystal panel PNL having the upper polarizer POL_U, the upper substrate 102, the lower substrate 104 and the lower polarizer POL_L is manufactured through the panel processing step 12. A coating / bonding process of a transparent clear adhesive (OCA) for bonding the upper polarizer POL_U, the upper substrate 102, and the lower polarizer POL_L to the lower substrate 104 can be performed.

The upper polarizing plate POL_U of the liquid crystal panel PNL manufactured through the panel processing step 12 according to the present embodiment is provided with an extended portion POL_EX. The light blocking adhesive resin 118 is not only in contact with the side surfaces of the liquid crystal panel PNL and the backlight unit BLU but also the inside surface of the extension POL_EX of the upper polarizer POL_U. The OCA coating is omitted between the upper polarizer POL_U and the upper substrate 102 and the upper polarizer POL_U is shielded from the light shielding adhesive resin 118 which is later applied to the side surfaces of the liquid crystal panel PNL and the backlight unit BLU. As shown in FIG. That is, the lower polarizer POL_L and the lower substrate 104 may be bonded to each other through a transparent adhesive layer, and the upper polarizer POL_U and the upper substrate 102 may not be bonded to each other as a transparent adhesive layer. In this case, the panel process step 12 may be performed in such a manner that a panel in a state in which the upper substrate 102, the lower substrate 104, and the lower polarizer POL_L are adhered in this order is disposed on the upper polarizer POL_U have.

A process of attaching a drive integrated circuit (IC) or attaching a flexible printed circuit board (FPCB) on the liquid crystal panel PNL in the panel process step 12 may be performed. That is, a chip-on-glass (COG) process and a flex-on-glass (FOG) process in which the drive IC and the FPCB are attached can also be performed as part of the panel process step 12.

A manufacturing method (10) of a liquid crystal display device includes a backlight unit (BLU) assembly step (14). The BLU assembly step 14 may be performed before or after the panel processing step 12 separately from the panel processing step 12. The backlight unit BLU assembled through the BLU assembly step 14 is disposed on the back surface of the lower polarizing plate POL_L of the liquid crystal panel PNL.

The method for manufacturing a liquid crystal display device 10 includes an adhesive resin adhering step 16 for fixing the backlight unit BLU disposed on the back surface of the liquid crystal panel PNL and the liquid crystal panel PNL with the light shielding adhesive resin 118 do. That is to say, the light-shielding adhesive resin (the light-shielding adhesive layer) is disposed so as to abut the side surfaces of the liquid crystal panel PNL and the backlight unit BLU and the inner surface of the upper polarizer POL_U in a state in which the backlight unit BLU is overlapped with the liquid crystal panel PNL 118).

The liquid crystal panel PNL and the backlight unit BLU are tilted at a predetermined angle in order to adjust the spread of the light shielding adhesive resin 118 on the sides of the liquid crystal panel PNL and the backlight unit BLU, The resin 118 may also be applied. For example, the inner surface of the upper polarizer POL_U is tilted at an angle of 10 degrees to 50 degrees so that the side surfaces of the liquid crystal panel PNL and the backlight unit BLU and the inner surface of the upper polarizer POL_U are bonded to the adhesive resin- The shading adhesive resin 118 may be applied in a "V" The width W of the light-shielding adhesive resin 118 is reduced by suppressing spreading of the light-shielding adhesive resin 118 in the direction opposite to the side surfaces of the liquid crystal panel PNL and the backlight unit BLU, The light shielding adhesive resin 118 can be brought into contact with a larger area on the side of the liquid crystal panel PNL and the backlight unit BLU.

When the light-shielding adhesive resin 118 is interposed in the junction region J between the liquid crystal panel PNL and the backlight unit BLU as in the above-described embodiments with reference to FIG. 2 or 5, A process of applying the light-shielding adhesive resin 118 to the junction region J may be performed before overlapping the backlight unit BLU with the backlight unit BLU. However, it is possible to control the viscosity and thixotropy of the light-shielding adhesive resin 118 so that the light-shielding adhesive resin 118 coated on the sides of the liquid crystal panel PNL and the backlight unit BLU can be bonded to the bonding region (J).

For example, when a light-shielding adhesive resin 118 is applied to the side surfaces of the liquid crystal panel PNL and the backlight unit BLU, a predetermined distance is left between the liquid crystal panel PNL and the backlight unit BLU, The liquid crystal panel 118 can be adjusted to flow into the junction region J between the liquid crystal panel PNL and the backlight unit BLU by a predetermined distance.

Shielding adhesive resin 118 does not intervene in the junction area J of the liquid crystal panel PNL and the backlight unit BLU like the liquid crystal display 100 shown in Fig. 6, the liquid crystal panel PNL and the light- The light blocking adhesive resin 118 is applied to contact the side surface of the liquid crystal panel PNL and the side surface of the backlight unit BLU in a state in which the backlight unit BLU is in complete contact.

The adhesive resin adhering step (16) includes a curing process for curing the light-shielding adhesive resin (118). The curing process can be performed in various ways depending on the curing characteristics of the light-shielding adhesive resin 118. [ For example, when the light-shielding adhesive resin 118 has a UV curing property, a UV light irradiation process can be performed, and when the light-shielding adhesive resin 118 has a heat curing property, heat is applied to the light- Or a natural curing at room temperature may be performed.

The light shielding adhesive resin 118 flows from the side of the liquid crystal panel PNL and the backlight unit BLU according to the viscosity of the light shielding adhesive resin 118 even if the curing process is performed according to the curing characteristics of the light shielding adhesive resin 118 Or may have a longer width than necessary. Therefore, the manufacturing method 10 of a liquid crystal display device includes a cutting process step 18 for removing the light-shielding adhesive resin 118 spreading unnecessarily over a wide area on the sides of the liquid crystal panel PNL and the backlight unit BLU, . ≪ / RTI > As described above, the light-shielding adhesive resin 118 coated on the side surfaces of the liquid crystal panel PNL and the backlight unit BLU is removed by grinding or various other cutting methods (e.g., laser cutting or wheel cutting) . At this time, the extended portion POL_EX of the upper polarizer POL_U corresponding to the portion where the light-shielding adhesive resin 118 is removed is also removed. By removing a portion exceeding the width W of the light-shielding adhesive resin 118 required for fixing the liquid crystal panel (PNL) and the backlight unit (BLU) and for providing the light-shielding effect and the external shock- The size of the bezel area of the liquid crystal display device 100 can be minimized.

The method 10 for manufacturing a liquid crystal display device includes a cover glass processing step 20 for attaching a cover glass 116 to the outer surface of the liquid crystal panel PNL in a state where the liquid crystal panel PNL and the backlight unit BLU are bonded to each other ). The cover glass 116 may be attached to the outer surface of the upper polarizer POL_U using an optical clear adhesive (OCA) or an optical clear resin (OCR). After the cover glass 116 is attached to the liquid crystal panel PNL, the cutting process for removing unnecessary portions from the light-shielding adhesive resin 118 and the upper polarizer POL_U can not proceed. Thus, in the method 10 of manufacturing a liquid crystal display including the cutting process step 18, the cover glass process step 20 proceeds after the cutting process step 18.

When the part of the extension POL_EX of the upper polarizer POL_U is partially removed together with a part of the light shielding adhesive 118 in the above-described cutting process step 18, a defect that the end of the upper polarizer POL_U may be damaged may occur . For example, when the laser cutting / scribing method is used, when the intensity of the laser and the irradiation time can not be stably controlled, the end (cut portion) of the upper polarizer POL_U bends from the plane of the upper polarizer POL_U Or down. Also, when the wheel cutting / scribing method is used, the ends (cut portions) of the upper polarizer POL_U may be cracked or cracked, and the rigidity of the liquid crystal panel PNL may be deteriorated.

In order to minimize the width of the light shielding adhesive resin 118 on the side of the liquid crystal panel PNL and the backlight unit BLU and to reduce the production defective rate according to the cutting process step 18, It is necessary to adjust the width of the resin 118. That is, the increase in the width W due to the thixotropy of the light-shielding adhesive 118 can be limited until the completion of the curing process of the light-shielding adhesive resin 118, and the cutting step 18 can be omitted.

A block jig is disposed on the side of the liquid crystal panel PNL and the backlight unit BLU until completion of the curing process of the light shielding adhesive resin 118 so that the block jig is disposed on the side of the liquid crystal panel PNL and the backlight unit BLU The width of the light-shielding adhesive resin 118 to be applied can be adjusted.

8 is a sectional view of a liquid crystal display device in which a width of a light shielding adhesive resin 118 coated on a side of a liquid crystal panel PNL and a backlight unit BLU is controlled using a block jig, (10b). Referring to FIG. 8, a backlight unit BLU assembled in the BLU assembly step 14 is disposed on the liquid crystal panel PNL manufactured in the panel process step 12. The upper polarizer POL_U of the liquid crystal panel PNL is provided with an extension POL_EX extending in the outer direction of the liquid crystal panel PNL with respect to the lower substrate 212 and the upper substrate 214 have. The width of the extended portion POL_EX is formed to be equal to or shorter than the width of the extended portion POL_EX remaining after performing the cutting process step 18 in the method 10a of manufacturing the liquid crystal display device of FIG. Can be. For example, the width of the extension portion POL_EX may be 0.5 mm or 0.5 mm or less. In other words, the end of the upper polarizer POL_U may be located at the outer edge of the liquid crystal panel PNL by a distance of about 0.5 mm or less than 0.5 mm from the end of the upper substrate 102.

In the method 10b of manufacturing a liquid crystal display device, the manufacturing method 10b of the liquid crystal display device can be simplified and the time required for manufacturing the liquid crystal display device 100 can be reduced by omitting the cutting step and changing the process order have. More specifically, in the method 10b for manufacturing a liquid crystal display device, since the width of the light-shielding adhesive resin 118 is controlled by using a block jig, the cutting process step 18 (see FIG. ) Is omitted. Thus, the cover glass processing step 20 may proceed prior to the adhesive resin bonding step 16, as shown in Fig. The cover glass process 20 is easy to proceed in conjunction with various operations that accompany the panel process step 12 in the process process. However, since the cutting process step 18 is difficult to proceed in the state that the cover glass 116 is attached, in the manufacturing method 10a of the liquid crystal display including the cutting process step 18, the adhesive resin bonding step 16 and After the cutting process step 18, the cover glass processing step 20 must proceed.

On the other hand, in the method of manufacturing a liquid crystal display device 10b, since the cutting process step is omitted, the cover glass processing step 20 and the panel processing step 12 are continuously performed or the various operations May be included in the panel processing step (12). For example, after the process of adhering the cover glass 116 and the upper polarizer POL_U to each other, the backlight unit BLU is disposed on the back surface of the liquid crystal panel PNL and the light shielding adhesive resin 118 is applied .

In the adhesive resin bonding step 16b, a block jig is disposed on the side surface of the liquid crystal display device 100. [ At this time, the side surface of the block jig facing the side surface of the liquid crystal panel PNL and the side surface of the backlight unit BLU may be arranged to abut the extended portion POL_EX of the upper polarizing plate POL_U. Since the ends of the upper polarizer POL_U extend further outwardly than the ends of the other substrates of the liquid crystal panel PNL, the lower polarizer POL_L facing the block jig, the lower substrate 104, There is a coating space between the outermost side of the substrate 102 and the block jig in which the light-shielding adhesive resin 118 can be applied. The light shielding adhesive resin 118 is embedded in the space to fill the inner surface of the upper polarizer POL_U, the side surface of the upper substrate 102, the side surface of the lower substrate 104, POL_L to a part of the side surface of the backlight unit BLU. In other words, the light-shielding adhesive resin 118 may not be applied over the entire side surface of the backlight unit BLU. For example, in the case of a liquid crystal display device having a height of 1 mm from the lower surface of the upper polarizer POL_U to the rear surface of the lower cover 112, the height of the light-shielding adhesive resin 118 filled in the application space is 0.8 mm 0.9 mm. The light shielding adhesive resin 118 can be applied to the extent that the application space is not completely filled to prevent the light shielding adhesive resin 118 from overflowing to the back surface of the lower cover 112.

The light shielding adhesive 118 is filled in the space of application between the liquid crystal display device 100 and the block jig and the curing process is performed according to the curing characteristics of the light shielding adhesive resin 118. For example, a UV light irradiation process can be performed when the light-shielding adhesive resin 118 has a UV curing property, and a heat curing process can be performed when the light-shielding adhesive resin 118 has a heat curing property. If the block jig is peeled off after the light-shielding adhesive resin 118 is cured, the liquid crystal display device 100 with reduced bezel size can be obtained without performing the cutting process. Shielding adhesive resin 118 and the block jig do not adhere to each other but are easily separated from the hardened shielding adhesive resin 118 after curing of the shielding adhesive resin 118, It may be subjected to a surface treatment for reducing the adhesion with the adhesive resin 118. [ For example, a surface of a block jig forming a space to which the light-shielding adhesive resin 118 is applied together with the side surface of the liquid crystal display device 100 may be coated with a Taflon coating.

By omitting the cutting step 18 as described above, it is possible to solve the side effect of cutting the extension part POL_EX of the upper polarizer POL_U and to reduce the time required to manufacture the liquid crystal display device 100. [

The width and shape of the light-shielding adhesive resin 118 disposed on the side surface of the liquid crystal display device 100 can be adjusted according to the shape of the block jig. For example, a portion corresponding to the backlight unit BLU in the block jig may protrude toward the backlight unit BLU. Thus, the light-shielding adhesive resin 118 may have the same width on the side of the liquid crystal panel (PNL) and on the side of the backlight unit (BLU), or the difference in width may be maintained within a certain range. Of course, the shape of the light-shielding adhesive resin 118 disposed on the side of the liquid crystal display device 100 and the shape of the block jig for the light-shielding adhesive resin 118 are not limited to the above-described embodiment, and may be variously changed.

The block jig may have a shape that facilitates the application of the light-shielding adhesive resin 118 to the space of application space between the liquid crystal display device 100 and the block jig. For example, as shown in FIG. 8, a block jig may be provided with a corner (Slanted Corner) inclined toward a space filled with a light-shielding adhesive resin 118. Even when the position of the nozzle is changed during the application of the light shielding adhesive resin 118, the light shielding adhesive 118 is applied to the space between the liquid crystal display device 100 and the block jig, . ≪ / RTI > Although only a part of the corner of the block jig is shown as being inclined in FIG. 8, the entire surface of the block jig facing the liquid crystal display device 100 may be inclined.

In the method 10b of manufacturing a liquid crystal display device using the above-described block jig, the block jig determines the width and shape of the light-shielding adhesive resin 118 applied to the side surface of the liquid crystal display device 100 It can be used not only for the purpose but also for curing the light-shielding adhesive resin 118.

For example, when the light-shielding adhesive resin 118 is cured by UV light, a block jig can be formed of a transparent material (e.g., glass, transparent plastic) capable of transmitting UV light. In addition, a UV light source may be embedded in a block jig to form a space to which the light-shielding adhesive resin 118 is applied, and also to cure the light-shielding adhesive resin 118. In this case, at least a part of the UV light for curing the light-shielding adhesive resin 118 can be irradiated from the side of the light-shielding adhesive resin 118 through the block jig. The width W2 of the light-shielding adhesive resin 118 applied to the side surface of the liquid crystal display device 100 in order to reduce the size of the bezel of the liquid crystal display device 100 is larger than the width W2 of the shielding adhesive resin 118 applied to the application space The intensity of the contrast UV light can be lowered and the irradiation time can be shortened when the light shielding adhesive resin 118 is cured by irradiating UV light from the upper side or the lower side of the application space Space . Of course, the UV light may be irradiated through the block jig, and the UV light may be irradiated on the upper or lower side of the application space.

When the light-shielding adhesive resin 118 is cured by heat, the block jig may be heated and used to cure the light-shielding adhesive resin 118.

As described above, the light-shielding adhesive resin 118 used in the liquid crystal display device 100 of the present invention adheres the liquid crystal panel PNL and the backlight unit BLU, and the liquid crystal panel PNL and the backlight unit BLU To prevent the light from leaking out. In order to improve the light-shielding effect, the optical density (OD) level of the light-shielding adhesive resin 118 can be increased. That is, by forming the light-shielding adhesive resin 118 with a material having a lower light transmittance, the effect of preventing light leakage can be improved. However, since the transmittance of the UV light is lower as the material having a high OD value is low, there arises a problem that the UV curing process becomes difficult, for example, the UV irradiation amount and the UV irradiation time must be increased in order to cure the light-shielding adhesive resin 118.

Accordingly, in the method of manufacturing a liquid crystal display device according to an embodiment of the present invention, the adhesive resin bonding step 16 includes a plurality of adhesive resin application processes and a plurality of curing processes. For example, the adhesive resin bonding step 16 may be performed through a primary adhesive resin application and curing process, and a secondary adhesive resin application and curing process.

9 is a view for explaining a method of manufacturing a liquid crystal display device using the adhesive resin bonding step 16 including a plurality of adhesive resin application processes and a plurality of curing processes.

In FIG. 9, the first adhesive resin layer 118a is applied as a space between the liquid crystal display device 100 and the block jig and cured. The second adhesive resin layer 118b is applied and cured so as to cover the first adhesive resin layer 118a after the application of the first adhesive resin layer 118a and the curing process thereof. At this time, the arrangement of the block jig is maintained.

Each of the first adhesive resin layer 118a and the second adhesive resin layer 118b is a part of the light shielding adhesive resin 118 coated on the side surface of the liquid crystal panel PNL and the side surface of the backlight unit BLU, The curing of the first adhesive resin layer 118a and the curing of the second adhesive resin layer 118b proceed sequentially. The OD of the first adhesive resin layer 118a and the OD of the second adhesive resin layer 118b can be more easily compared with the case where the entire light shielding adhesive resin 118 between the liquid crystal display device 100 and the block jig is simultaneously cured. Both the level condition and the curing condition can be met. In other words, since the first adhesive resin layer 118a and the second adhesive resin layer 118b each having a thickness lower than the total thickness of the light-shielding adhesive resin 118 are successively divided and cured, the adhesive resin layer 118, Even if the OD value of each of the first adhesive resin layer 118a and the second adhesive resin layer 118b is set higher than the OD value of the adhesive resin layer 118 required for curing the entirety at once, Can be achieved.

The first adhesive resin layer 118a and the second adhesive resin layer 118b may each be composed of one of a photo-curing resin, a thermosetting resin, a hot-melt resin, and a wet resin. In one embodiment of the present invention, the first adhesive resin layer 118a and the second adhesive resin layer 118b may have different OD levels from each other. For example, the first adhesive resin layer 118a may have a higher OD level than the second adhesive resin layer 118b. In this case, in order to shield the light leakage from the junction area J of the liquid crystal panel PNL and the backlight unit BLU, the first adhesive resin layer 118a is bonded to the junction area of the liquid crystal panel PNL and the backlight unit BLU (J) and to be in contact with a part of the side surface of the backlight unit (BLU). The second adhesive resin layer 118b may be in contact with only the side surface of the backlight unit BLU without directly contacting the side surface of the liquid crystal panel PNL according to the height of the first adhesive resin layer 118a.

Also, in an embodiment of the present invention, the first adhesive resin layer 118a and the second adhesive resin layer 118b may be made of materials having different curing properties. For example, the first adhesive resin layer 118a may be composed of one of a photo-curable resin, a thermosetting resin, a hot-melt resin, or a wet resin, and the second adhesive resin layer 118b may be a photo- A resin used as the first adhesive resin layer 118a of the melt resin or the wet resin, and a resin other than the resin used as the first adhesive resin layer 118a. For example, the first adhesive resin layer 118a may be made of Hot Melt adhesive resin and the second adhesive resin layer 118b may be made of a photocurable resin. In this case, the first adhesive resin layer 118a can have a higher OD level than the second adhesive resin layer 118b because it does not need to pass the UV light.

In addition, the first adhesive resin layer 118a and the second adhesive resin layer 118b may have different viscosities. For example, the first adhesive resin layer 118a is formed of a highly viscous material as compared with the second adhesive resin layer 118b, and is bonded to the junction region J between the liquid crystal panel PNL and the backlight unit BLU, It is possible to prevent the resin layer 118a from being infiltrated or to be formed of a material having a low viscosity and to flow into the bonding region J between the liquid crystal panel PNL and the backlight unit BLU to be interposed therebetween.

10 is a perspective view showing a state in which the light shielding adhesive 118 is applied to the sides of the liquid crystal panel PNL and the backlight unit BLU to fix the liquid crystal panel PNL and the backlight unit BLU Sectional view of a liquid crystal display device 100 according to a third embodiment of the present invention. 10, the light-shielding adhesive resin 118 is disposed on the inner side of the cover glass 116 (i.e., the side facing the droplet display panel), the side of the liquid crystal panel PNL, and the side of the backlight unit BLU They come in contact with some parts and fix them.

The cover glass frame 120 protrudes from the inner surface of the cover glass 116 in the direction of the liquid crystal panel PNL and the backlight unit BLU. Are spaced apart from the side surfaces of the liquid crystal panel (PNL) and the backlight unit (BLU) to form a coating space. That is, a space between the side of the liquid crystal panel (PNL) and the backlight unit (BLU) and the cover glass frame 120 is filled with a light-shielding adhesive resin 118.

The upper polarizer POL_U may be provided with an extension POL_EX extended to a predetermined distance from the end of the lower polarizer POL_L and an end of the upper polarizer POL_U may be provided on the upper side of the cover glass frame 120 Or may be spaced apart at a predetermined distance. 7, the lower surface of the cover glass 116, the lower surface of the cover glass frame 120, and the upper surface of the cover glass frame 120, as shown in FIG. 7, when the end of the upper polarizer POL_U is spaced apart from the cover glass frame 120. [ The side surfaces of the liquid crystal panel PNL and the side surfaces of the backlight unit BLU to fix them to each other. When the end of the upper polarizer POL_U is in contact with the cover glass frame 120, the light-shielding adhesive 118 adheres to the lower surface of the upper polarizer POL_U, the side surface of the cover glass frame 120, and the upper polarizer POL_U The side surfaces of the liquid crystal panel (PNL) except for the backlight unit (BLU) and the side surfaces of the backlight unit (BLU) to fix them to each other.

10, the liquid crystal panel PNL and the backlight unit BLU are adhered to each other by the light-shielding adhesive resin 118 coated on the side and are bonded to each other in the bonding region of the liquid crystal panel PNL and the backlight unit BLU Shielding adhesive resin 118 is not interposed in the adhesive layer J. That is, in the region where the light-shielding adhesive resin 118 is applied to the side surface of the liquid crystal display device 100, a separate shielding adhesive resin 118 is disposed between the lower surface of the liquid crystal panel PNL and the upper surface of the backlight unit BLU . Shielding adhesive 118 is applied between the liquid crystal display device 100 and the cover glass frame 120 at a portion other than the portion where the light-shielding adhesive resin 118 is applied and between the lower surface of the liquid crystal panel PNL and the upper surface of the backlight unit BLU The resin 118 may be interposed. In order to enhance the fixing force between the liquid crystal panel PNL and the backlight unit BLU and the light leakage preventing effect or to realize the pressure sensor in the liquid crystal display 100, the side surfaces of the liquid crystal panel PNL and the backlight unit BLU are light- The light blocking adhesive resin 118 may be interposed between the lower surface of the liquid crystal panel PNL and the upper surface of the backlight unit BLU even in the region where the resin 118 is applied.

In the liquid crystal display 100 of the embodiment shown in Fig. 10, the width of the light-shielding adhesive resin 118 is adjusted by the distance between the cover glass frame 120 and the liquid crystal panel PNL and the backlight unit BLU. 10, a cutting process for removing a part of the light-shielding adhesive resin 118 and the upper polarizer POL_U is not performed and the liquid crystal panel PNL and the cover glass 116 ) May be made before the application of the light-shielding adhesive resin 118 or by the light-shielding adhesive resin 118.

11 is a view showing a schematic manufacturing method 10c for manufacturing the liquid crystal display device 100 shown in Fig. Referring to Fig. 11, a method of manufacturing a liquid crystal display device 10c using a cover glass frame 120 includes a panel processing step 12 for manufacturing a liquid crystal panel PNL. The panel processing step 12 may be performed in a manner similar to the manufacturing methods 10a and 10b of the liquid crystal display device described with reference to Figs. 7 and 8, and the detailed processing method of the panel processing step 12 May be variously modified depending on the structure of the liquid crystal panel (PNL). The upper polarizing plate POL_U of the liquid crystal panel PNL in the panel process step 12 is formed to have an extension POL_EX extended to the outer side more than the lower polarizing plate POL_L or the upper polarizing plate POL_U and the lower polarizing plate POL_L May have the same length.

In this embodiment, the cover glass frame 120 forms an application space for applying the light-shielding adhesive resin 118. A cover glass processing step 20 for attaching the cover glass 116 and the cover glass frame 120 on the liquid crystal panel PNL prior to the adhesive resin joining step 16 for applying the light- It must proceed. The cover glass guide frame 120 may be attached to the cover glass 116 before or after the cover glass 116 is attached to the liquid crystal panel PNL.

BLU assembly step 14 proceeds with panel process step 12. The BLU assembly step 14 may be performed separately from the panel processing step 12, as described above. That is, the order of the panel process step 12 and the BLU assembly step 14 may be changed. The backlight unit BLU assembled through the BLU assembly step 14 is disposed on the cover glass 116 and the liquid crystal panel PNL to cover the side surfaces of the liquid crystal panel PNL and the side surfaces of the backlight unit BLU, A coating space for coating the light-shielding adhesive 118 between the frame 120 is formed.

And the light-shielding adhesive resin 118 is filled into this space in the adhesive resin joining step (16). The light-shielding adhesive resin 118 is disposed on the lower surface of the cover glass 116, the side surface of the liquid crystal panel PNL, the side surface portion of the backlight unit BLU, and the cover glass frame (the liquid crystal panel PNL and the backlight unit BLU) 120). As described above, when the extended portion POL_EX of the upper polarizing plate POL_U is formed to be in contact with the cover glass frame 120, the light-shielding adhesive resin 118 is disposed on the lower surface of the upper polarizing plate POL_U, The side surface of the panel PNL, the side surface of the backlight unit BLU, and the inner surface of the cover glass frame 120 facing the backlight unit BLU with the liquid crystal panel PNL.

After the application of the adhesive resin 118, a curing process according to the curing characteristics of the light-shielding adhesive resin 118 is performed. For example, a UV light irradiation process can be performed when the light-shielding adhesive resin 118 has a UV curing property, and a heat curing process can be performed when the light-shielding adhesive resin 118 has a heat curing property. The light shielding adhesive resin 118 filled in the application space between the liquid crystal display device 100 and the cover glass frame 120 is cured to cover the liquid crystal panel PNL and the backlight unit BLU with the cover glass 116 and cover And fixed together with the glass frame 120.

In the liquid crystal display 100 of the embodiment shown in Fig. 10, the width of the light-shielding adhesive resin 118 is adjusted by the distance between the cover glass frame 120 and the liquid crystal panel PNL and the backlight unit BLU. Therefore, in the liquid crystal display device manufacturing method 10c of Fig. 11, the cover glass frame 120 replaces the role of the block jig in the liquid crystal display device manufacturing method 10b described with reference to Fig. Accordingly, the liquid crystal display 100 having a reduced bezel size can be manufactured without a cutting process step 18 for removing a part of the light-shielding adhesive resin 118 and the upper polarizer POL_U, as in the manufacturing method of FIG.

The coverglass frame 120 may have a shape that facilitates the application of the light shielding adhesive 118 to the space between the liquid crystal display 100 and the cover glass frame 120. 10 and 11, the upper corner of the cover glass frame 120 on the liquid crystal display 100 side is inclined toward the space where the light-shielding adhesive resin 118 is applied and filled, for example, The light shielding adhesive resin 118 can flow into the space between the liquid crystal display device 100 and the cover glass frame 120 even if the position of the nozzle for applying the adhesive resin is changed. In FIGS. 10 and 11, only a part of the corner of the cover glass frame 120 is shown as being inclined. However, in another embodiment, the entire surface of the cover glass frame 120 facing the liquid crystal display device 100 may be inclined have.

12 is a diagram illustrating a method of fabricating a liquid crystal display device by securing an application space of a light shielding adhesive resin 118 using a cover glass frame 120 according to an embodiment of the present invention. 16) in which a plurality of adhesive resin application processes and a plurality of curing processes are included. 12, a first adhesive resin 118a is applied to a space between the liquid crystal panel PNL and the cover glass frame 120 to be cured through a first curing step, A second adhesive resin 118b may be applied to cover the resin 118a and cured through a second curing step.

Since the first adhesive resin layer 118a and the second adhesive resin layer 118b each having a thickness lower than the total thickness of the light shielding adhesive resin 118 are successively divided and cured to form the first adhesive resin layer 118A and the second adhesive resin layer 118b, These curing can be easily achieved even if the OD of the second adhesive resin layer 118B is kept high.

At this time, as described above with reference to FIG. 9, the first adhesive resin layer 118a and the second adhesive resin layer 118b may have OD levels different from each other. For example, the first adhesive resin layer 118a may have a higher OD level than the second adhesive resin layer 118b. In this case, in order to shield the light leakage from the junction area J of the liquid crystal panel PNL and the backlight unit BLU, the first adhesive resin layer 118a is bonded to the junction area of the liquid crystal panel PNL and the backlight unit BLU (J) and to be in contact with a part of the side surface of the backlight unit (BLU). The second adhesive resin layer 118b may be in contact with only the side surface of the backlight unit BLU without directly contacting the side surface of the liquid crystal panel PNL according to the height of the first adhesive resin layer 118a.

Also, as described with reference to FIG. 9, the first adhesive resin layer 118a and the second adhesive resin layer 118b may be made of materials having different curing properties. For example, the first adhesive resin layer 118a may be made of Hot Melt adhesive resin and the second adhesive resin layer 118b may be made of a photocurable resin. In this case, the first adhesive resin layer 118a can have a higher OD level than the second adhesive resin layer 118b because it does not need to pass the UV light.

Also, as described with reference to Fig. 9, the first adhesive resin layer 118a and the second adhesive resin layer 118b may have different viscosities. For example, the first adhesive resin layer 118a may be formed of a material having a high or low viscosity relative to the second adhesive resin layer 118b to form a junction region J between the liquid crystal panel PNL and the backlight unit BLU. It is possible to control the interposition of one adhesive resin layer 118A.

Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, it is to be understood that the present invention is not limited to those embodiments and various changes and modifications may be made without departing from the scope of the present invention. . Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. Therefore, it should be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Claims (15)

Disposing a liquid crystal panel on a rear surface of the cover glass so as to be spaced apart from a cover glass frame located at an outer periphery of the back surface of the cover glass;
Disposing a backlight unit on a back surface of the liquid crystal panel; And
Shielding adhesive resin between the liquid crystal panel and the backlight unit and the cover glass frame of the cover glass to fix the liquid crystal panel and the backlight unit. The method according to claim 1,
Wherein the light blocking adhesive resin applied to the space between the liquid crystal panel and the backlight unit and the cover glass frame has a viscosity of 20,000 cps to 45,000 cps and a thixotropy of 3 to 6. The method according to claim 1,
Wherein the light-shielding adhesive resin has a thickness of 0.33 mm and an optical density of 1.4 or more. The method according to claim 1,
Wherein the liquid crystal panel is attached to the rear surface of the cover glass as a transparent adhesive layer. The method according to claim 1,
Wherein the step of applying the light-shielding adhesive resin to the light-shielding adhesive resin application space to fix the liquid crystal panel and the backlight unit comprises:
Applying a first adhesive resin layer to contact the backside of the cover glass;
Curing the first adhesive resin layer;
Applying a second adhesive resin layer to cover the first adhesive resin layer; And
And curing the second adhesive resin layer. ≪ RTI ID = 0.0 > 21. < / RTI > 6. The method of claim 5,
Wherein the optical density of the first adhesive resin layer is higher than the optical density of the second adhesive resin layer. 6. The method of claim 5,
Wherein the first adhesive resin layer is made of a wet resin and the second adhesive resin layer is a photocurable resin. Cover glass;
A cover glass frame disposed on an outer back surface of the cover glass;
A liquid crystal panel disposed on a rear surface of the cover glass so as to be spaced apart from the cover glass frame;
A backlight unit disposed on a rear surface of the liquid crystal panel so as to be spaced apart from the cover glass frame;
And a light blocking adhesive resin disposed in the light shielding adhesive application space between the liquid crystal panel and the backlight unit and the cover glass frame to fix the liquid crystal panel and the backlight unit and shield light. 9. The method of claim 8,
Wherein the width of the space for applying the light-shielding adhesive resin is longer as the distance from the cover glass is increased. 9. The method of claim 8,
Wherein the backlight unit includes a lower cover that accommodates a light source and a light guide plate and is in contact with a back surface of the liquid crystal panel, and the light shielding adhesive resin is in contact with a side surface of the lower cover. 11. The method of claim 10,
Wherein the lower cover is made of a white plastic material.
9. The method of claim 8,
Wherein the backlight unit includes a light guide and a panel guide disposed outside the light guide plate to support the liquid crystal panel, wherein the light-shielding adhesive resin is in contact with an outer side surface of the panel guide. 9. The method of claim 8,
Wherein the light-shielding adhesive resin comprises a first adhesive resin layer and a second adhesive resin layer having different optical density values. 9. The method of claim 8,
Wherein the light-shielding adhesive resin comprises a first adhesive resin layer and a second adhesive resin layer having different curing conditions. 15. The method of claim 14,
Wherein the first adhesive resin layer is composed of a wet resin and the second adhesive resin layer is composed of a photocurable resin.

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