KR102238482B1 - Liquid crystal display device for preventing foreign material - Google Patents

Abstract

The present invention relates to a liquid crystal display device for preventing foreign matters from penetrating between a liquid crystal panel and a guide panel assembled at a predetermined interval, comprising: a liquid crystal panel for realizing an image; A backlight disposed under the liquid crystal panel to supply light to the liquid crystal panel; A guide panel for assembling the liquid crystal panel and a backlight; A functional panel disposed on the liquid crystal panel and adhered by an adhesive; And a pad disposed between the guide panel and the liquid crystal panel.

Description

Liquid crystal display device that prevents foreign matter penetration {LIQUID CRYSTAL DISPLAY DEVICE FOR PREVENTING FOREIGN MATERIAL}

The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device capable of preventing foreign matter from penetrating between a liquid crystal panel and a guide panel.

Recently, flat panel display devices such as LCD (Liquid Crystal Display), PDP (Plasma Display Panel), OLED (Organic Light Emitting Display), etc. It is being applied to devices.

As such flat panel display devices, liquid crystal display devices (LCDs) are currently in the spotlight mainly due to mass production technology, ease of driving means, realization of high quality, and realization of a large-area screen.

The liquid crystal display device is a transmissive display device, and displays a desired image on the screen by adjusting the amount of light that passes through the liquid crystal layer by refractive index anisotropy of the liquid crystal molecules. Accordingly, in the liquid crystal display device, a backlight unit, which is a light source that transmits through the liquid crystal layer, is installed for displaying an image. In general, the backlight unit can be largely divided into two types.

1 is a cross-sectional view showing the structure of a conventional liquid crystal display device.

As shown in FIG. 1, the liquid crystal display device is composed of a first substrate 1 and a second substrate 3 and a liquid crystal layer (not shown) therebetween, which realizes an image when a signal is applied from the outside. The liquid crystal panel 10 and an LED substrate 32 on which a plurality of LEDs 34 that are disposed on the lower side of the liquid crystal panel 10 to emit light are mounted, and the liquid crystal panel 10 are disposed below the liquid crystal panel 10. A light guide plate 35 that guides the light emitted from the LED 34 and supplies it to the liquid crystal panel 10, and is provided between the liquid crystal panel 10 and the light guide plate 35 and is guided by the light guide plate 35 to provide a liquid crystal panel. (10) An optical sheet 38 composed of a diffusion sheet 38a and prism sheets 38b, 38c for diffusing and condensing light supplied to the light guide plate 35, and is disposed under the light guide plate 35 to the lower portion of the light guide plate 35. A reflecting plate 36 for reflecting the guided light, a lower cover 40 in which the reflecting plate 36, the light guide plate 35, the optical sheet 38 and the LED substrate 32 are accommodated, and the lower cover 40 The reflective plate 36, the light guide plate 35, the optical sheet 38, and the LED substrate 32 are assembled together with the guide panel 62 on which the liquid crystal panel 10 is positioned, and the guide panel 50 ) Is combined with the upper cover 60 to assemble the liquid crystal panel 10.

The first substrate 1 of the liquid crystal panel 10 is a thin film transistor array substrate on which a thin film transistor is formed, and various wirings and pixel electrodes are formed on the first plate 1 as well as a thin film transistor. The second substrate 2 is a color filter substrate, on which a color filter layer and a black matrix are formed.

The lower cover 40 is to assemble a backlight unit composed of a reflective layer 36, a light guide plate 35, an optical sheet 38, and an LED 34, and the wall surface extends upward from the bottom surface, and the backlight The backlight unit is assembled by placing the parts of the unit inside the wall. At this time, the wall surface of the lower cover 40 is coupled to the guide panel 62. The upper cover 60 is coupled on the wall surface of the guide panel 62 and the lower cover 40 and the outer surface of the backlight unit to assemble the liquid crystal panel 10 and the backlight unit.

In the liquid crystal display device having the above configuration, light emitted from the LED 34 is incident on one side of the light guide plate 35 and then proceeds to the other side. At this time, although not shown in the drawing, a reflective pattern is formed on the lower surface of the light guide plate 35 so that the light incident on the lower surface of the light guide plate 35 is reflected from the reflective pattern and then enters the liquid crystal panel 10 through the upper surface. An image is implemented on the liquid crystal panel 10.

A cover glass 70 is disposed on the liquid crystal panel 10. The cover glass 70 prevents the liquid crystal panel 10 from being damaged by absorbing an impact applied to the liquid crystal display device from the outside. The cover glass 70 is attached to the liquid crystal panel 10 by an adhesive 72 such as an adhesive resin applied to the upper surface of the liquid crystal panel 10 or the lower surface of the cover glass 70 to a predetermined thickness t.

However, in the liquid crystal display device having the above configuration, the following problems occur.

As described above, the cover glass 70 is disposed on the liquid crystal panel 10 and attached to the upper surface of the liquid crystal panel 10 by the adhesive 72. At this time, in the attaching process of the cover glass 70, the adhesive 72 is not always applied with a set thickness t, but an error occurs. That is, since a thickness tolerance occurs, a gap of a certain distance (d) is formed between the guide panel 62 and the liquid crystal panel 10 in consideration of the thickness tolerance of the adhesive 72 between the guide panel 62 and the liquid crystal panel 10 when assembling the liquid crystal panel 10. It should be done, as follows:

If the adhesive 72 on the upper portion of the liquid crystal panel 10 is applied thicker than the set thickness t, if a gap of the set distance d is not formed between the guide panel 62 and the liquid crystal panel 10, Not only are the guide panel 62 and the liquid crystal panel 10 in direct contact, but a pressure having a size corresponding to the increased thickness is generated between the guide panel 62 and the liquid crystal panel 10.

At this time, since the guide panel 62 is mainly formed of a mold, the strength is higher than that of the liquid crystal panel 10. Accordingly, the pressure generated in the guide panel 62 and the liquid crystal panel 10 is mainly transmitted to the liquid crystal panel 10, and this pressure is applied to the cell gap of the liquid crystal panel 10 (that is, the first substrate 1 ) And the gap between the second substrate 3 or the thickness of the liquid crystal layer), and the change in the cell gap changes the transmittance of the light passing through the liquid crystal layer, thereby deteriorating the image quality.

In consideration of this point, in the conventional liquid crystal display device, the guide panel 62 and the liquid crystal panel 10 are assembled with a gap of a certain distance d1, but in this case, the guide panel 62 is in the process of assembling and inspecting the liquid crystal display device. The foreign matter penetrates between the liquid crystal panel 10 and the liquid crystal panel 10, which causes defects such as deterioration of image quality in a screen area in which an image is displayed.

The present invention has been made in view of the above points, by providing a pad between the liquid crystal panel and the guide panel, preventing foreign substances from penetrating between the guide panel and the liquid crystal panel, and at the same time, an adhesive for bonding the functional panel and the liquid crystal panel. An object of the present invention is to provide a liquid crystal display device capable of absorbing pressure due to thickness variation.

In order to achieve the above object, a liquid crystal display device according to the present invention includes a liquid crystal panel for implementing an image; A backlight disposed under the liquid crystal panel to supply light to the liquid crystal panel; A guide panel for assembling the liquid crystal panel and a backlight; A functional panel disposed on the liquid crystal panel and adhered by an adhesive; And a pad disposed between the guide panel and the liquid crystal panel.

The functional panel includes a cover glass, a touch panel, and a three-dimensional image panel, and the adhesive is made of a transparent resin such as OCA (Optically Clear Adhesive) and OCR (Optical Clear Resin).

The pad is formed along the outer circumference of the liquid crystal panel, and the thickness of the pad is greater than the gap between the liquid crystal panel and the guide panel, so that the pad is in close contact with the lower surface of the liquid crystal panel and the upper surface of the guide panel, Blocks it from penetrating.

In the present invention, a pad for preventing foreign matter and absorbing shock is provided between the guide panel and the liquid crystal panel, so that foreign matter penetrates between the liquid crystal panel and the guide panel during the assembly process, transportation, and use, thereby preventing defects such as deterioration of image quality and damage to parts. You can do it.

In addition, in the present invention, since the pad is disposed between the guide panel and the liquid crystal panel to prevent contact between the guide panel and the liquid crystal panel, the liquid crystal panel and the guide panel are prevented from being damaged due to collision between the guide panel and the liquid crystal panel by external force. In addition, it is possible to prevent defects caused by pressure due to an error in the thickness of the adhesive to which the functional panel is attached.

1 is a view showing the structure of a conventional liquid crystal display device having a cover glass.
2 is an exploded perspective view of a liquid crystal display device according to the present invention.
3 is a cross-sectional view of an assembled liquid crystal display device according to the present invention.

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

In the present invention, in order to prevent foreign matters from penetrating between the liquid crystal panel and the guide panel when a predetermined gap is formed between the liquid crystal panel and the guide panel, a pad for preventing foreign matter having elasticity is provided between the liquid crystal panel and the guide panel. Since the pad for preventing foreign matter has elasticity, even if the thickness of the adhesive bonding the cover glass and the liquid crystal panel increases, it can smoothly absorb the impact due to the increase in thickness, as well as when the thickness of the adhesive decreases. Since the lower surface of the liquid crystal panel and the upper surface of the guide panel are in contact, it is possible to smoothly block the penetration of foreign substances between the liquid crystal panel and the guide panel.

2 is an exploded perspective view of a liquid crystal display device according to the present invention, and FIG. 3 is a cross-sectional view of a combined structure.

2 and 3, the liquid crystal display device according to the present invention includes a liquid crystal panel 110 and a backlight unit. The liquid crystal panel 110 is composed of a first substrate 101 and a second substrate 103 and a liquid crystal layer (not shown) therebetween, and implements an image as a signal is applied from the outside.

The backlight unit is disposed on the lower side of the liquid crystal panel 110 and is disposed under the liquid crystal panel 110 and the LED substrate 132 on which a plurality of light emitting devices (LEDs) 134 are mounted. A light guide plate 150 that guides the light emitted from the LED 134 and supplies it to the liquid crystal panel 110, and is provided between the liquid crystal panel 110 and the light guide plate 150, and is guided from the light guide plate 150 to provide a liquid crystal panel. An optical sheet 138 consisting of a diffusion sheet 138a and prism sheets 138b and 138c for diffusing and condensing the light supplied to 110, and disposed under the light guide plate 150 to the lower portion of the light guide plate 150 It consists of a reflecting plate 136 that reflects the guided light.

The reflective plate 136, the light guide plate 150, and the optical sheet 138 of the backlight unit are accommodated in the lower cover 140 and then assembled as the lower cover 140 and the guide panel 162 are coupled.

The liquid crystal panel 110 is disposed above and fixed to the guide panel 162, and a functional panel 170 is disposed above the liquid crystal panel 110.

The upper cover 160 is placed in the upper edge region of the functional panel 170, and the upper cover 160 is combined with the liquid crystal panel 110, the upper cover 140, and the guide panel 162, thereby The liquid crystal display device is completed by assembling 110, the functional panel 170, and the backlight unit.

Although not shown in the drawing, the first substrate 101 has a plurality of gate lines and data lines arranged vertically and horizontally to define a plurality of pixel regions, and a thin film transistor as a switching element is formed in each pixel region. A pixel electrode formed on the pixel region is formed. In addition, the thin film transistor includes a gate electrode connected to a gate line, a semiconductor layer formed by stacking amorphous silicon, etc. on the gate electrode, and a source electrode and a drain electrode formed on the semiconductor layer and connected to a data line and a pixel electrode. .

The second substrate 102 is a color filter composed of a plurality of sub-color filters implementing colors of red (R), green (G), and blue (B), and between the sub-color filters. It is composed of a black matrix that separates and blocks light passing through the liquid crystal layer.

The first substrate 101 and the second substrate 102 configured as described above are bonded to each other by a sealant (not shown) formed outside the image display area to form a liquid crystal panel, and the first substrate 101 ) And the second substrate 102 are bonded to each other through a bonding key (not shown) formed on the first substrate 101 or the second substrate 102.

In addition, although not shown in the drawings, a first polarizing plate and a second polarizing plate are attached to the first substrate 101 and the second substrate 102, respectively, to polarize the light input and output to the liquid crystal panel 110 to produce an image. Implement.

The light guide plate 150 is for guiding the light input from the LED 134 to the liquid crystal panel 110, and the light incident on one side of the light guide plate 150 is reflected from the upper and lower surfaces of the light guide plate 150 to the other side. After propagating, it is output to the outside of the light guide plate 150. In this case, the light guide plate 150 may be formed of a rectangular parallelepiped made of a material such as polymethyl-methacrylate (PMMA), but is not limited to a specific shape. A pattern or groove may be formed on the lower surface of the light guide plate 150 to scatter incident light, so that the light incident through the light incident surface may be reflected upward.

The optical sheet 138 is supplied to the liquid crystal panel 110 by improving the efficiency of light output from the light guide plate 150. The optical sheet 138 includes a diffusion sheet 138a for diffusing the light output from the light guide plate 150 and a first for condensing the light diffused by the diffusion sheet so that uniform light is supplied to the liquid crystal panel 110. It consists of a prism sheet 138b and a second prism sheet 138c. At this time, one diffusion sheet 138a is provided, but the prism sheet includes a first prism sheet 138b and a second prism sheet 138c where the prism vertically intersects in the x,y-axis direction. By refracting the light in the axial direction, the light improves the straightness.

As the LED 134, an R, G, B LED emitting monochromatic light of R (Red), G (Green), and B (Blue), or an LED device emitting white light may be used.

When LEDs emitting monochromatic light are arranged, monochromatic LEDs of R, G, and B are alternately arranged at regular intervals, and the monochromatic light emitted from the LED is mixed with white light, and then supplied to the liquid crystal panel 110, and white light is emitted In the case of having an LED device, white light is supplied to the liquid crystal panel 110 by arranging a plurality of LED devices at regular intervals.

At this time, the white light LED device is composed of a blue LED emitting blue light and a phosphor that absorbs blue monochromatic light to emit yellow light, and the blue monochromatic light output from the blue LED and the yellow monochromatic light emitted from the phosphor are mixed to form white light. It is supplied to the panel 110. In the drawing, the LED 134 is disposed on one side of the light guide plate 150, but may be disposed on both sides of the light guide plate 135.

The LED 134 is mounted on an LED substrate 132 made of a metal or flexible film. The LED substrate 132 is disposed along the side surface of the light guide plate 150 to face the side surface of the light guide plate 150, and the LED 134 is mounted on the LED substrate 132 and the side surface of the light guide plate 150 Light from the LED 134 is incident on the light guide plate 150 through the light guide plate 150.

A flexible circuit board 133a is attached to and connected to the end of the LED board 132, and a wire 133b is attached to the end of the flexible circuit board 133a. The flexible circuit board 133a and the wire 133b connect the LED 134 mounted on the LED board 132 to a driving circuit part outside the liquid crystal display device, so that an external signal is supplied with a signal and power to the LED controller, The LED controller drives the LED 134 according to this input signal. Signal wiring is formed on the upper surface or/and lower surface of the flexible circuit board 133a, and the signal wiring is electrically connected to the wire 133b, so that the signal of the driving circuit unit is transmitted to the signal of the wire 133b and the flexible circuit board 133a. It is input to the LED substrate 132 through the wiring.

Meanwhile, in the present invention, the light source for supplying light to the liquid crystal panel 110 is not limited to the LED 134. Illustrating and describing the LED 134 as a light source in the present invention is for convenience of description, but the light source of the present invention is not limited to the LED 134.

As the light source of the present invention, a fluorescent lamp such as CCFL (Cold Cathod Fluorescent Lamp) or EFFL (External Electorde Fluorescent Lamp) may be used. When using such a fluorescent lamp, there is no need to use the LED substrate 132, and a lamp housing for accommodating the fluorescent lamp will be disposed on one side of the light guide plate. A reflective material is applied to the inner surface of the lamp housing to reflect light emitted from the fluorescent lamp to the side of the light guide plate 150 to improve light efficiency.

The lower cover 140 includes a bottom surface positioned under the reflective plate 136 and a wall surface fixing the side surface of the light guide plate 150 and the rear surface of the LED substrate 132, and the reflective layer 136 and the light guide plate 150 , The optical sheet 138 and the like are accommodated to assemble the backlight unit. In addition, an external driving unit (not shown) is provided outside the lower cover 140 to apply signals to the liquid crystal panel 110 and the LED 134.

The reflective plate 136 extends not only to the lower surface of the light guide plate 150, but also to a side surface and a portion of the upper surface of the light guide plate 150. That is, in the reflective plate 136 on the side where the LED 134 is disposed, a region corresponding to the LED 134 is removed to form a window 136a, and the LED 134 is disposed on the window 136a.

At this time, the reflective plate 136 does not extend to a part of the side and upper surface of the light guide plate 150 and is disposed only under the light guide plate 150, and the LED 134 is housed in a separate housing coated with a reflective material therein. It may be disposed on one side of the light guide plate 150.

A liquid crystal panel 110 is placed on the guide panel 162. The guide panel 162 is formed in a rectangular shape so that an edge region of the liquid crystal panel 110 is placed on the guide panel 162.

A pad 176 for preventing foreign matter penetration is disposed between the guide panel 162 and the liquid crystal panel 110. At this time, the pad 176 is made of a resin material having elasticity, etc., and is in close contact with the upper surface of the guide panel 162 and the lower surface of the liquid crystal panel 110. Although not shown in the drawing, the pad 176 may be attached to the guide panel 162 and/or the liquid crystal panel 110 by adhesive means such as an adhesive or double-sided tape.

As shown in FIG. 2, the pad 176 is formed as a band-shaped closed curved surface having a set thickness d2 and a width, and is disposed along the edge region of the liquid crystal panel 110 or the guide panel 162. In this case, the pad 176 is disposed in an outer area other than a display area in which an image of the liquid crystal panel 110 is realized, and blocks foreign substances from penetrating into the display area of the liquid crystal panel 110.

A functional panel 170 is positioned on the liquid crystal panel 110. The functional panel 172 is, for example, a cover glass that absorbs an external shock and prevents the liquid crystal panel 110 from being damaged, a touch panel that inputs data by a touch such as a person's hand or a pen, or a liquid crystal. Various functional panels such as a 3D Film Patterned Retarder (FPR) or a parallax barrier panel for implementing a 3D image by selectively blocking a path of light emitted from the panel 110 may be applied.

The functional panel 170 is attached to the liquid crystal panel 110 by an adhesive 172 made of a transparent resin such as OCA (Optically Clear Adhesive) and OCR (Optical Clear Resin). However, as the adhesive 172, any material may be used as long as it is transparent and the light emitted from the liquid crystal panel 110 can be output as it is without a change in optical path or change in optical characteristics such as refraction.

The adhesive 172 is applied to the lower surface of the functional panel 170 or the upper surface of the liquid crystal panel 110 at a set thickness t of the adhesive 172 to bond the functional panel 170 and the liquid crystal panel 110 to each other.

When the liquid crystal panel 110 is assembled with the guide panel 162, the liquid crystal panel 110 and the guide panel 162 are assembled with a tolerance of a predetermined distance d1. In this case, the distance d1 between the liquid crystal panel 110 and the guide panel 162 is smaller than the thickness d2 of the pad 176 disposed between the liquid crystal panel 110 and the guide panel 162.

Therefore, when the liquid crystal panel 110 is assembled with the guide panel 162, the pad 176 is always in close contact with the lower surface of the liquid crystal panel 110 and the upper surface of the guide panel 162, and the pad 176 is constant. Since it is formed in a closed curved shape of the width, the spaced apart space between the liquid crystal panel 110 and the guide panel 162 by the pad 176 is completely blocked from the outside. Therefore, when assembling the liquid crystal display device or when moving or using the product after completion of the product, foreign substances generated from parts such as guide panels or foreign substances penetrating from the outside to the inside of the space spaced between the liquid crystal panel 110 and the guide panel 162 As a result, it becomes impossible to penetrate into, and as a result, it is possible to prevent defects such as deterioration of image quality due to foreign substances.

In addition, even when the adhesive 172 attaching the functional panel 170 to the liquid crystal panel 110 is not applied to the set thickness, the pad 176 can prevent defects due to the difference in thickness.

That is, since the pad 176 has elasticity, it is possible to absorb pressure due to the thickness variation of the adhesive 172. For example, when the thickness (t) of the adhesive 172 is applied over a set thickness, the distance d1 between the liquid crystal panel 110 and the guide panel 162 decreases, but the thickness of the pad 176 (d2) Pressure is not applied to the liquid crystal panel 110 and the guide panel 162 due to absorption of the pressure due to the decrease.

As described above, in the present invention, even if the distance d1 between the liquid crystal panel 110 and the guide panel 162 is reduced by the pad 176, the liquid crystal panel 110 and the guide pad 162 are in direct contact with each other. It is possible to prevent damage due to friction. Therefore, even if the distance d1 between the liquid crystal panel 110 and the guide panel 162 is set smaller than that of a conventional liquid crystal display device, defects due to a decrease in the distance can be prevented. As a result, the liquid crystal panel 110 It is possible to minimize the assembly tolerance between the and the guide panel 162.

When the thickness t of the adhesive 172 is applied to a thickness less than or equal to the set thickness, the distance d1 between the liquid crystal panel 110 and the guide panel 162 increases, but the liquid crystal panel 110 and the guide panel 162 Since the thickness d2 of the pad 176 disposed therebetween is larger than the distance d1 between the liquid crystal panel 110 and the guide panel 162, the thickness t of the adhesive 172 decreases, and thus the liquid crystal panel ( Even if the distance d1 between the guide panel 110 and the guide panel 162 increases, the pressure applied to the pad 176 decreases, but the pad 176 is still connected to the lower surface of the liquid crystal panel 110 and the guide panel ( Since it is in close contact with the upper surface of the 162, when the thickness t of the adhesive 172 is applied to a predetermined thickness or less, it is possible to prevent foreign substances from penetrating between the liquid crystal panel 110 and the guide panel 162.

As described above, in the present invention, a pad for preventing foreign matter and absorbing shock is provided between the guide panel and the liquid crystal panel, so that foreign matter penetrates between the liquid crystal panel and the guide panel during the assembly process, transportation, and use, resulting in deterioration of image quality and component loss. It is possible to prevent the defect from being damaged.

In addition, in the present invention, since the pad is disposed between the guide panel and the liquid crystal panel to prevent contact between the guide panel and the liquid crystal panel, the liquid crystal panel and the guide panel are prevented from being damaged due to collision between the guide panel and the liquid crystal panel by external force. In addition, it is possible to prevent defects caused by pressure due to an error in the thickness of the adhesive to which the functional panel is attached.

Meanwhile, in the above detailed description, the structure of the liquid crystal display device of the present invention is specifically described, but the present invention is not limited to this structure. For example, in the above detailed description, a structure in which the light source is disposed on the side of the light guide plate is described, but the present invention is not limited to this structure, and the light source is also applied to a structure disposed on the lower surface of the light guide plate.

In addition, in the above description, a structure in which the guide panel, the lower cover, and the upper cover are formed in a specific shape and assembled in a specific shape is disclosed, but the present invention is not limited to this specific shape and assembly structure, but various shapes and assembly It could be applied to the structure.

The most important feature of the present invention is that when a functional panel such as a cover glass or a touch panel is disposed on the front of the liquid crystal panel, the liquid crystal panel and the guide panel are assembled with a certain gap between the liquid crystal panel and the guide panel in consideration of the thickness tolerance of the adhesive. In this case, a pad for preventing foreign matter and absorbing shock is provided between the liquid crystal panel and the guide panel. Accordingly, the present invention can be applied to all currently applied liquid crystal display devices if the liquid crystal panel is supported by the guide panel and a pad is provided between the liquid crystal panel and the guide panel.

In addition, in the above detailed description, it is described with a specific name of each component of the liquid crystal display device, but this is for convenience of description. Like the guide panel, parts with similar functions depending on products and specifications may be described with different names (for example, support main or main support part, etc.), so the rights of the present invention are not limited by these names. .

110: liquid crystal panel 132: LED
138: optical sheet 150: light guide plate
162: guide panel 170: functional panel
172: adhesive 176: pad

Claims (12)

A liquid crystal panel that implements an image;
A light guide plate disposed below the liquid crystal panel to guide light to the liquid crystal panel, a light source disposed under at least one side or lower side of the light guide plate to supply light to the liquid crystal panel through the light guide plate, and an optical sheet disposed on the light guide plate Backlight unit;
A functional panel disposed on the liquid crystal panel and adhered by an adhesive;
Consisting of a body portion, a first support portion disposed between the liquid crystal panel and the optical sheet to support the liquid crystal panel and on which an optical sheet is placed underneath, and a second support portion supporting the functional panel, the liquid crystal panel and the backlight unit Guide panel to assemble;
A pad disposed between the first support portion of the guide panel and the liquid crystal panel; And
It is formed on an upper surface or a lower surface of the pad and is composed of an adhesive means for attaching the pad to only the upper surface of the guide panel or the lower surface of the liquid crystal panel,
The optical sheet is disposed under the first support part of the guide panel, the optical sheet and the pad are disposed between the first support part of the guide panel,
The pad is formed in a closed curved shape along an outer circumference of the liquid crystal panel to block the space between the liquid crystal panel and the guide panel from the outside, and the thickness of the pad is greater than the distance between the liquid crystal panel and the guide panel. A pad is in close contact with the lower surface of the liquid crystal panel and the upper surface of the guide panel,
The liquid crystal panel and the functional panel are disposed on the first support portion and the second support portion of the guide panel, respectively, and the optical sheet is disposed under the first support portion of the guide panel, so that the liquid crystal panel, the functional panel, and the optical sheet are It is arranged at a set interval from each other by the first support portion and the second branch of the guide panel,
The liquid crystal display device, wherein the pad and the optical sheet are disposed between the first support portion of the guide panel. The liquid crystal display device of claim 1, wherein the functional panel comprises a cover glass, a touch panel, a film patterned retarder (FPR) or a parallax barrier panel for a three-dimensional image. The liquid crystal display device of claim 1, wherein the adhesive comprises optically clear adhesive (OCA) and optical clear resin (OCR). delete delete The liquid crystal display device of claim 1, wherein the pad absorbs a pressure according to a change in the thickness of the adhesive layer. The liquid crystal display device according to claim 1, wherein the pad is attached to the liquid crystal panel or/and the guide panel by an adhesive or double-sided tape. delete The method of claim 1,
A lower cover coupled to the guide panel to accommodate a liquid crystal panel and a backlight; And
A liquid crystal display device, characterized in that it further comprises an upper cover for assembling the functional panel and the liquid crystal panel. The method of claim 9,
The optical sheet is surrounded by the entire side end portion by the body portion,
The upper cover is a liquid crystal display device, characterized in that coupled to the wall surface of the lower cover, the body portion of the guide panel, and an outer region of the backlight unit. The method of claim 1, wherein the backlight unit further comprises a reflecting plate that is formed on a lower surface, a side surface, and a partial area of the upper surface of the light guide plate to reflect incident light back to the light guide plate,
The reflector is a liquid crystal display device, characterized in that the region corresponding to the light source has been removed. delete

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