KR20140072634A - Liquid crystal display device - Google Patents

Abstract

The present invention relates to a liquid crystal display device and, more particularly, to a liquid crystal display device which is light and thin and includes a narrow bezel. The present invention simplifies a process and reduces a size and a thickness by integrating a liquid crystal with a backlight unit by an adhesive tape to become a module and attaching a second polarization plat to the upper side of the adhesive tape attached to the top edge of the liquid crystal panel. Also, provided is the liquid crystal display device with a narrow bezel. Clear borderless to remove a boarder between a screen and a frame is implemented.

Description

[0001] Liquid crystal display device [0002]

The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device having a lightweight, thin, and narrow bezel.

2. Description of the Related Art In recent years, the display field has rapidly developed in line with the information age. In response to this trend, a flat panel display device (FPD) having a thinness, light weight, A plasma display panel (PDP), an electroluminescence display device (ELD), and a field emission display device (FED) : CRT).

Among these, liquid crystal display devices are excellent in moving picture display and are most actively used in the fields of notebook computers, monitors, TVs and the like due to their high contrast ratios.

Such a liquid crystal display device has a liquid crystal panel in which a liquid crystal panel is interposed between two adjacent substrates through a liquid crystal layer as an essential component and changes the alignment direction of the liquid crystal molecules in an electric field in the liquid crystal panel to realize a difference in transmittance do.

However, since the liquid crystal panel does not have its own light emitting element, a separate light source is required to display the difference in transmittance as an image. To this end, a backlight having a light source is disposed on the back surface of the liquid crystal panel.

The liquid crystal panel and the backlight are modularized integrally with the support main through the top cover covering the top edge of the liquid crystal panel and the cover bottom covering the back surface of the backlight in a state where the edge is surrounded by the support main of a square- .

On the other hand, in recent years, such a liquid crystal display device has been widely used as a portable computer, a desktop computer monitor, and a wall-mounted television, and researches to have a massive weight and volume with a large display area It is actively proceeding.

However, in spite of efforts to manufacture a liquid crystal display device of a light weight and a thin thickness, there are too many constituent elements of the liquid crystal display device, and the thinness and light weight of the liquid crystal display device are hindered.

In addition, since the number of components constituting the liquid crystal display device is too large, the process of modularizing them is also complicated and requires a long process time.

In particular, in recent years, liquid crystal displays have been required to be lightweight and thin, to have a wide display area, and to be as small as possible in a bezel area, which is a non-display area other than the display area.

It is a second object of the present invention to provide a liquid crystal display device having a narrow bezel and a first object of the present invention to provide a lightweight and thin liquid crystal display device.

The second object is to improve the efficiency of the process.

According to an aspect of the present invention, there is provided a liquid crystal display comprising: a liquid crystal panel; A first polarizer attached to the rear of the liquid crystal panel; A backlight unit positioned on a rear surface of the first polarizer; An adhesive tape adhered to cover upper and lower edges of the liquid crystal panel, and side and back edges of the backlight unit; And a second polarizer attached to an upper portion of the adhesive tape attached to the upper edge of the liquid crystal panel.

At this time, the edge of the second polarizer is exposed to the outside of the liquid crystal panel, the edge of the exposed second polarizer is fixed to the outside of the adhesive tape through the liquid adhesive, Wherein the adhesive tape has a width of 1.0 to 1.9 mm.

The backlight unit includes an LED assembly, a light guide plate, and an optical sheet. The light guide plate includes a side wall covering an edge of the optical sheet. The liquid crystal panel is seated on the side wall of the light guide plate. And adhered and fixed to the side wall through a double-sided adhesive tape or a liquid adhesive.

Here, the optical sheet is integrated with the first polarizing plate, and the height of the side wall corresponds to the thickness of the optical sheet.

The present invention also provides a liquid crystal display device comprising: a liquid crystal panel; A first polarizer attached to the rear of the liquid crystal panel; A backlight unit positioned on a rear surface of the first polarizer; A cover bottom including a horizontal surface on which the back surface of the backlight unit closely contacts, a side surface of the backlight unit, and a side surface that guides a side surface of the liquid crystal panel; An adhesive tape adhered to cover the horizontal surface and the side surface of the cover bottom and the upper surface edge of the liquid crystal panel; And a second polarizer attached to an upper portion of the adhesive tape attached to the upper edge of the liquid crystal panel.

Here, the edge of the second polarizer is exposed to the outside of the liquid crystal panel, and the exposed edge of the second polarizer is fixed to the outside of the adhesive tape through the liquid adhesive, and the horizontal surface is perpendicular A first horizontal plane that is bent, a vertical plane perpendicular to the first horizontal plane, and a second horizontal plane that is perpendicular to the vertical plane and does not face the first horizontal plane.

The adhesive tape is attached so as to cover the first horizontal surface.

As described above, according to the present invention, the liquid crystal panel and the backlight unit are integrally modulated through the adhesive tape, and the second polarizer is attached to the upper portion of the adhesive tape attached to the upper surface edge of the liquid crystal panel, Thinness and simplification of the process.

Further, there is an effect of providing a liquid crystal display device having a narrow bezel, and it is possible to realize a clear borderless display without a border between a screen and a frame.

1 is a cross-sectional view schematically showing a liquid crystal display module according to a first embodiment of the present invention;
2 is a cross-sectional view schematically showing a liquid crystal display module according to a second embodiment of the present invention.
3 is a cross-sectional view schematically showing a liquid crystal display device according to a third embodiment of the present invention.

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

1 is a cross-sectional view schematically showing a liquid crystal display module according to a first embodiment of the present invention.

As shown in the figure, the liquid crystal display module includes a liquid crystal panel 110, a backlight unit 120, and an adhesive tape 210.

First of all, the liquid crystal panel 110 plays a key role in image display, and includes first and second substrates 112 and 114 which are bonded to each other with a liquid crystal layer interposed therebetween .

At this time, a plurality of gate lines and data lines intersect with each other on the inner surface of the first substrate 112, which is usually referred to as a lower substrate or an array substrate, although not clearly shown in the figure, And a thin film transistor (TFT) is provided at each of the intersections, and is connected in a one-to-one correspondence with the transparent pixel electrodes formed in the respective pixels.

On the inner surface of the second substrate 114 called an upper substrate or a color filter substrate, color filters of red (R), green (G), and blue (B) And a black matrix for covering non-display elements such as a gate line, a data line, and a thin film transistor. In addition, a transparent common electrode covering these elements is provided.

In addition, although not clearly shown in the figure, the first substrate 112 is further provided with a pad region as compared with the second substrate 114, so that the area of one edge is larger. Therefore, a driving circuit for applying a signal to a plurality of gate lines and data lines is constituted as a pad region which is one edge of the first substrate 112.

A gate and a data printed circuit board are connected to each other through a connection member such as a flexible circuit board through a pad region of the first substrate 112 so that the gate and the data printed circuit board are closely contacted to the back surface of the LCD module during the module process.

In order to prevent leakage of the liquid crystal layer filled between the two substrates 112 and 114 and the liquid crystal layer, an orientation film for determining the initial molecular alignment direction of the liquid crystal is interposed between the two substrates 112 and 114 of the liquid crystal panel 110, A seal pattern is formed along the edges of the projections 112 and 114.

The first and second polarizers 119a and 119b are attached to the outer surfaces of the first and second substrates 112 and 114. The second polarizer 119b attached to the outer surface of the second substrate 114, Is formed to have a larger size than the second substrate 114.

Therefore, the second polarizer 119b is protruded to the outside of the second substrate 114 except the one edge where the printed circuit board is connected.

A backlight unit 120 for supplying light to the back surface of the liquid crystal panel 110 is provided so that a difference in transmittance represented by the liquid crystal panel 110 is externally manifested.

The backlight unit 120 includes a light guide plate 123 for guiding the light generated from the LED assembly 129 and the LED assembly 129, a reflection plate 125 disposed below the light guide plate 123 and made of white or silver, And an optical sheet 121 positioned above the optical sheet 123 for processing the light to a high quality.

The LED assembly 129 is disposed at one side of the light guide plate 123 so as to face the light incident portion of the light guide plate 123. The LED assembly 129 includes a plurality of LEDs 129a, And a PCB 129b mounted at a predetermined interval.

The plurality of LEDs 129a emit light having colors of red (R), green (G), and blue (B) toward the front of the light guide plate 123, and the plurality of RGB LEDs 129a ) Can be turned on at once to realize white light by color mixing.

In particular, in recent years, a blue LED 129a including a blue LED chip having excellent luminous efficiency and brightness has been used for improving the luminous efficiency and brightness, and a phosphor such as yttrium aluminum garnet (YAG: Ce) doped with cerium, A blue LED 129a made of a yellow phosphor is used.

The blue light emitted from the LED 129a is mixed with the yellow light transmitted through the phosphor and emitted by the fluorescent material, thereby realizing white light.

In this case, in addition to the LED assembly 129, a fluorescent lamp such as a cold cathode fluorescent lamp or an external electrode fluorescent lamp may be used. If such a fluorescent lamp is used, And a lamp guide (not shown) serving to concentrate the light in the direction of the light guide plate 123.

The light guide plate 123 to which the light emitted from the plurality of LEDs 129a is incident is formed so that the light incident from the LED 129a is uniformly spread over a wide area of the light guide plate 123 while traveling in the light guide plate 123, And provides a surface light source to the liquid crystal panel 110.

At this time, the light guide plate 123 includes a pattern of a specific pattern on its back surface in order to supply a uniform surface light source. In order to guide light incident into the light guide plate 123, the pattern may include an elliptical pattern, A polygon pattern, a hologram pattern, and the like.

The reflection plate 125 is disposed on the back surface of the light guide plate 123 and reflects light passing through the back surface of the light guide plate 123 toward the liquid crystal panel 110 to improve the brightness of light.

The optical sheet 121 on the light guide plate 123 includes a diffusion sheet and at least one light condensing sheet and diffuses or condenses the light that has passed through the light guide plate 123 to provide a more uniform surface light source to the liquid crystal panel 110 Let it enter.

Here, the diffusion sheet is positioned directly above the light guide plate 123, and serves to adjust the direction of light so that the light travels toward the light condensing sheet while dispersing the light incident through the light guide plate 123.

The light diffused through the diffusion sheet is condensed in the direction of the liquid crystal panel 110 by the condensing sheet. Therefore, the light passing through the light condensing sheet is almost perpendicular to the liquid crystal panel 110.

Alternatively, the liquid crystal display module of the present invention may be composed of a composite optical sheet in which the optical sheet 121 has a diffusion and condensing function at the same time, and the diffusion sheet and the light condensing sheet may be integrally laminated.

In this case, the composite optical sheet includes a diffusion layer disposed on the base substrate under the base substrate for diffusing the light incident through the light guide plate on the basis of the transparent base substrate, and a condenser for condensing the light diffused by the diffusion layer onto the liquid crystal panel And a light-condensing layer disposed on the base substrate, for example.

The optical sheet 121 may be integrally formed with the first polarizing plate 119a attached to the outer surface of the first substrate 112. [

Meanwhile, the backlight unit 120 having the above-described structure is called a side light type, and a plurality of LEDs 129a may be arranged in a plurality of layers on the PCB 129b, and the light- It is also possible that they are arranged side by side along the longitudinal direction of both edges.

Also, a direct type in which a plurality of LED assemblies 129 are arranged in parallel under the liquid crystal panel 110 in a state in which the light guide plate 123 is omitted may be used.

The liquid crystal panel 110 and the backlight unit 120 are integrally modularized through the adhesive tape 210. The adhesive tape 210 is attached to the back edge of the reflection plate 125 of the backlight unit 120 and the rear edge of the backlight unit 120 and the side surfaces of the liquid crystal panel 110 and the upper surface edge of the liquid crystal panel 110. [

Accordingly, the liquid crystal panel 110 and the backlight unit 120 have a primary fixing force.

The second polarizer 119b attached to the outer surface of the second substrate 114 of the liquid crystal panel 110 is attached to the upper portion of the adhesive tape 210 covering the upper edge of the liquid crystal panel 110, The adhesive tape 210 surrounding the edge of the second polarizer 119b exposed to the outside of the substrate 114 and the side of the liquid crystal panel 110 is fixed through a liquid adhesive 220 such as glue.

That is, the liquid crystal display module of the present invention does not have a separate module mechanism for modularizing the liquid crystal panel 110 and the backlight unit 120, but integrally with the adhesive tape 210 and the liquid adhesive 220 Modularized.

The adhesive tape 210 covering the top edge of the liquid crystal panel 110 is attached so as to cover the top edge of the liquid crystal panel 110 so as not to exceed the width d of 1.9 mm, It is preferable that the adhesive tape 210 covering the top edge does not invade the active area of the liquid crystal panel 110. [

Particularly, in the liquid crystal display module of the present invention, even if the adhesive tape 210 is attached so that the upper edge of the liquid crystal panel 110 covers only the width d of 1.0 mm, The adhesive strength of the adhesive tape 210 covering the top edge of the liquid crystal panel 110 is improved through the adhesive force of the second polarizer 119b so that the liquid crystal panel 110 can be reliably stuck to the liquid crystal panel 110. [ And the backlight unit 120 can be modularized.

That is, the adhesive tape 210 attached to the top edge of the liquid crystal panel 110 may be attached to have a width d of 1.0 to 1.9 mm.

The adhesive tape 210 surrounding the edge of the second polarizer 119b and the side surface of the liquid crystal panel 110 is fixed once again through the liquid adhesive 220 so that the liquid crystal panel 110 and the backlight unit 120 ) Can be modularized more stably.

In other words, the liquid crystal display module according to the present invention has the first fixing force through the adhesive tape 210, the second fixing force through the second polarizing plate 119b, and the third fixing force through the liquid adhesive 220, The backlight unit 110 and the backlight unit 120 are modularized.

Accordingly, the liquid crystal display module of the present invention can omit a top cover, a guide panel, and a cover bottom for modularizing a conventional liquid crystal display module, thereby enabling a thin and lightweight liquid crystal display device and simplifying the process It comes. Also, the process cost can be reduced.

Further, in addition to being lightweight and thin, a liquid crystal display module having a narrow bezel in which a display area is expanded by omitting a top cover and a bezel area which is a non-display area other than the display area is reduced can do.

Particularly, in the liquid crystal display module of the present invention, the second polarizing plate 119b is attached to the upper portion of the adhesive tape 210 covering the top edge of the liquid crystal panel 110, so that the adhesive tape 210 is adhered to the liquid crystal panel 110 It is possible to modularize the liquid crystal panel 110 and the backlight unit 120 stably even if the top edge of the liquid crystal panel 110 is adhered with a very thin width, and a clear borderless without border between the screen and the frame can be realized.

Table 1 below shows the results of the measurement of the assembling process, appearance, and bonding force of the LCD module according to the first embodiment of the present invention.

Sample 1 Sample 2 Sample 3 Assembly process OK OK OK Exterior OK OK OK cohesion Good Good Good

Here, the assembly process is a modularization of the liquid crystal display module according to the embodiment of the present invention without any difficulty, and the appearance shows that it is possible to implement clear borderless.

It is a result of showing the bonding force due to external shock or vibration of the modularized liquid crystal display device module.

Referring to Table (1), it can be confirmed that all the samples 1, 2, and 3 have passed the assembling process, appearance, and bonding force.

That is, the liquid crystal panel 110 and the backlight unit 120 are first fixed through the adhesive tape 210 according to the first embodiment of the present invention, and then the adhesive tape (not shown) covering the top edge of the liquid crystal panel 110 And the second polarizer 119b exposed to the outside of the second substrate 114 is adhered to the adhesive tape 210 and the liquid adhesive 220 through the adhesive 220 The liquid crystal display module which is fixed at the third time has no difficulty in a separate assembly process, and it can realize clear borderless, and it is also found that modular bonding force is also good.

2 is a cross-sectional view schematically showing a liquid crystal display module according to a second embodiment of the present invention.

In order to avoid redundant explanations, the same parts as those of the first embodiment described above are denoted by the same reference numerals, and only the characteristic contents described above in the second embodiment will be described.

As shown in the figure, the LCD module includes a reflective plate 125, a light guide plate 123, an LED assembly 129 including a PCB 129b and an LED 129a provided on one side of the light guide plate 123, The optical sheets 121 are stacked on the light guide plate 123 to form a backlight unit 120 and a liquid crystal layer (not shown) is interposed between the first and second substrates 112 and 114 on the backlight unit 120 The liquid crystal panel 110 is positioned and first and second polarizers 119a and 119b selectively transmitting only specific light are attached to the outer surfaces of the first and second substrates 112 and 114, respectively.

At this time, the characteristic configuration of the second embodiment of the present invention is that the light guide plate 123 is formed to have a predetermined space in which the optical sheet 121 can be seated inward.

That is, the light guide plate 123 according to the second embodiment of the present invention includes a side wall 123a capable of placing the edge of the optical sheet 121 that is seated on the light guide plate 123.

The liquid crystal panel 110 is fixed on the upper side of the side wall 123a of the light guide plate 123 so that the edge of the liquid crystal panel 110 is supported by the side wall 123a of the light guide plate 123 and the liquid adhesive, And is fixed to the side wall 123a of the light guide plate 123 through the through-

Accordingly, the liquid crystal panel 110 and the backlight unit 120 have a primary fixing force.

The height h of the side wall 123a of the light guide plate 123 may be greater than or equal to the thickness of the optical sheet 121. The height h of the side wall 123a of the light guide plate 123 may be It is preferable that it is formed so as to correspond to the thickness of the optical sheet 121.

That is, since the side wall 123a of the light guide plate 123 and the optical sheet 121 are formed to be flush with each other, the first polarizer 119a attached to the rear of the liquid crystal panel 110 and the optical sheet 121 are integrated It is preferable that a gap is not formed between the optical sheet 121 and the light guide plate 123.

When a gap is generated between the optical sheet 121 and the light guide plate 123 and the light incident from the light guide plate 123 is emitted to the optical sheet 121, the distance between the light guide plate 123 and the optical sheet 121 And the light efficiency may be lowered.

The liquid crystal panel 110 and the backlight unit 120 are integrally modulated through the adhesive tape 210. The adhesive tape 210 is attached to the rear edge of the reflective plate 125 of the backlight unit 120 and the rear edge of the backlight unit 120 and the side surfaces of the liquid crystal panel 110 and the upper surface edge of the liquid crystal panel 110. [

The second polarizer 119b attached to the outer surface of the second substrate 114 of the liquid crystal panel 110 adheres to the upper portion of the adhesive tape 210 covering the upper edge of the liquid crystal panel 110, The adhesive tape 210 surrounding the edge of the second polarizer 119b exposed to the outside of the substrate 114 and the side of the liquid crystal panel 110 is fixed through a liquid adhesive 220 such as a glue .

The liquid crystal display module according to the second embodiment of the present invention can be manufactured by using the side wall 123a of the light guide plate 123, the liquid crystal panel 110, the adhesive tape 210, the second polarizer 119b, 220), which is the fourth order.

Accordingly, the liquid crystal panel 110 and the backlight unit 120 can be more stably modularized.

Meanwhile, the modularized liquid crystal display module is finally modularized through a front cover and a rear cover together with a printed circuit board and the like. At this time, the front cover or the rear cover is made of a plastic material such as polycarbonate 3) may be further provided on the back surface of the backlight unit 120 for the heat dissipation of the LED assembly 129 and the heat generated while driving the image. Let's take a closer look.

3 is a cross-sectional view schematically showing a liquid crystal display device according to a third embodiment of the present invention.

In order to avoid redundant description, the same parts as those of the first and second embodiments described above are designated by the same reference numerals, and only the characteristic contents described in the third embodiment will be described would.

As shown in the figure, the liquid crystal display includes a reflective plate 125, a light guide plate 123, an LED assembly 129 including a PCB 129b and LED 129a provided on one side of the light guide plate 123, Optical sheets 121 are stacked on top of the light guide plate 123 to form a backlight unit 120 and a liquid crystal layer (not shown) interposed between the first and second substrates 112 and 114 and a liquid crystal layer The first and second polarizers 119a and 119b are disposed on the outer surfaces of the first and second substrates 112 and 114 to selectively transmit specific light.

In this case, the characteristic construction of the third embodiment of the present invention is that the liquid crystal panel 110 and the backlight unit 120 are seated on the cover bottom 150.

The cover bottom 150 is provided for discharging high temperature heat generated from the liquid crystal panel 110 and the backlight unit 120 to the outside in the course of driving an image, It is possible to improve the rigidity.

The cover bottom 150 includes a horizontal surface 151 and a side surface 153 whose edges are vertically bent so that the liquid crystal panel 110 and the backlight unit 120 are seated on the cover bottom 150, 110 and the backlight unit 120 are guided around the back edge and the side surface of the backlight unit 120 and the side surface of the liquid crystal panel 110 by the cover bottom 150.

In this case, although the horizontal surface 151 of the cover bottom 150 covers only a part of the back edge of the backlight unit 120, the back surface of the backlight unit 120 may be entirely enclosed.

The horizontal surface 151 of the cover bottom 150 is formed inwardly to form a predetermined space with the rear surface of the reflector 125. That is, And a second horizontal surface 151c which is perpendicular to the vertical surface 151b and does not face the first horizontal surface 151a, and a second horizontal surface 151b perpendicular to the first horizontal surface 151a, .

As described above, the horizontal surface 151 of the cover bottom 150 is formed in a stepped shape, so that a predetermined space formed between the back surface of the reflection plate 125 and the horizontal surface 151 of the cover bottom 150, So that the substrate can be mounted.

As a result, it is possible to prevent the thickness of the liquid crystal display device module from being increased by the printed circuit board such as the system board, thereby realizing a thinner liquid crystal display device module.

The backlight unit 120 and the liquid crystal panel 110 mounted on the cover bottom 150 are modularly integrated through the adhesive tape 210. The adhesive tape 210 is adhered to the horizontal surface of the cover bottom 150 The liquid crystal panel 110, and the cover bottom 150, and the upper surface edge of the liquid crystal panel 110, as shown in FIG.

At this time, the adhesive tape 210 attached to cover the back surface of the horizontal surface 151 of the cover bottom 150 is formed to cover only the first horizontal surface 151a of the cover bottom 150, It is preferable that the adhesive tape 210 covering the adhesive layer 151 and the horizontal surface 151 of the cover bottom 150 are flush with each other.

The second polarizer 119b attached to the outer surface of the second substrate 114 of the liquid crystal panel 110 adheres to the upper portion of the adhesive tape 210 covering the upper edge of the liquid crystal panel 110, The adhesive tape 210 surrounding the edge of the second polarizer 119b exposed to the outside of the substrate 114 and the side of the liquid crystal panel 110 is fixed through a liquid adhesive 220 such as a glue .

Accordingly, the liquid crystal display module according to the third embodiment of the present invention has a strong fixing force by the third order by the adhesive tape 210, the second polarizing plate 119b, and the liquid adhesive 220.

Accordingly, the liquid crystal panel 110 and the backlight unit 120 can be modularized more stably, and the rigidity of the liquid crystal panel 110 and the backlight unit 120 can be improved through the cover bottom 150. In the process of driving the image, The heat generated from the heat source 120 can be discharged to the outside.

The present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

110: liquid crystal panel (112: first substrate, 114: second substrate)
119a and 119b: first and second polarizing plates
The present invention relates to a light emitting diode (LED), and more particularly,
210: adhesive tape, 220: liquid adhesive

Claims (11)

A liquid crystal panel;
A first polarizer attached to the rear of the liquid crystal panel;
A backlight unit positioned on a rear surface of the first polarizer;
An adhesive tape adhered to cover upper and lower edges of the liquid crystal panel, and side and back edges of the backlight unit;
A second polarizer attached to an upper portion of the adhesive tape attached to the upper surface of the liquid crystal panel,
And the liquid crystal display device.
The method according to claim 1,
Wherein an edge of the second polarizer is exposed to the outside of the liquid crystal panel and an edge of the exposed second polarizer is fixed to the outside of the adhesive tape through a liquid adhesive.
The method according to claim 1,
Wherein the adhesive tape adhered to the upper surface edge of the liquid crystal panel has a width of 1.0 to 1.9 mm.
The method according to claim 1,
Wherein the backlight unit comprises an LED assembly, a light guide plate, and an optical sheet, and the light guide plate includes side walls covering an edge of the optical sheet.
5. The method of claim 4,
Wherein the liquid crystal panel is mounted on an upper portion of the side wall of the light guide plate, and the liquid crystal panel is attached and fixed to the side wall through a double-sided adhesive tape or a liquid adhesive.
5. The method of claim 4,
And the optical sheet is integrated with the first polarizing plate.
5. The method of claim 4,
And the height of the side wall corresponds to the thickness of the optical sheet.
A liquid crystal panel;
A first polarizer attached to the rear of the liquid crystal panel;
A backlight unit positioned on a rear surface of the first polarizer;
A cover bottom including a horizontal surface on which the back surface of the backlight unit closely contacts, a side surface of the backlight unit, and a side surface that guides a side surface of the liquid crystal panel;
An adhesive tape adhered to cover the horizontal surface and the side surface of the cover bottom and the upper surface edge of the liquid crystal panel;
A second polarizer attached to an upper portion of the adhesive tape attached to the upper surface of the liquid crystal panel,
And the liquid crystal display device.
9. The method of claim 8,
Wherein an edge of the second polarizer is exposed to the outside of the liquid crystal panel and an edge of the exposed second polarizer is fixed to the outside of the adhesive tape through a liquid adhesive.
9. The method of claim 8,
Wherein the horizontal surface comprises a first horizontal surface bent perpendicularly from the side surface, a vertical surface perpendicular to the first horizontal surface, and a second horizontal surface perpendicular to the vertical surface and not facing the first horizontal surface.
11. The method of claim 10,
And the adhesive tape is attached so as to cover the first horizontal surface.

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