KR20140079185A - Liquid Crystal Display Device - Google Patents

Abstract

The present invention relates to a liquid crystal display device which enables a liquid crystal panel and a backlight unit to be reused by preventing the liquid crystal panel and the backlight unit from being damaged when the liquid crystal panel is separated from the backlight unit, and prevents non-uniform pressure from being applied to the liquid crystal panel due to a bonding unit. The liquid crystal display device according to the present invention comprises: a backlight unit; a liquid crystal panel which is arranged on the light emission surface of the backlight unit; a front panel which is combined with the front surface of the liquid crystal panel; a first guide panel which is combined with the backlight unit; and a second guide panel which combines a protection substrate to the first guide panel.

Description

[0001] The present invention relates to a liquid crystal display device,

The present invention relates to a liquid crystal display, and more particularly, to a liquid crystal display device capable of preventing the liquid crystal panel and the backlight unit from being damaged when separated from the liquid crystal panel and the backlight unit, and reusing the liquid crystal panel and the backlight unit. And a liquid crystal display device.

A liquid crystal display device, which is one of the flat panel display devices, is capable of displaying at a high image quality, can be driven at a lower power than other display devices, is capable of being downsized and is used in various fields as compared with other flat panel display devices. It is used in a usable form.

For example, a liquid crystal display device has been widely used in various forms such as a small-sized measuring instrument, a mimicry communication device, a control device, and a vehicle display device due to its miniaturization and low-power driving characteristics. For such use, the flat panel display device is used in a form combined with a separate device or processed in a form that is easy to apply to other devices.

Such a liquid crystal display device requires a backlight unit for expressing an image, and the liquid crystal panel outputs and controls the light supplied from the backlight unit, thereby displaying an image.

In recent years, liquid crystal panels have become thinner as well as backlight units, and glass substrates used in liquid crystal panels have become much thinner than conventional ones. Though it is difficult to manufacture such a thin glass substrate, it can be realized in a high image quality and can be lightened, and its development and utilization have been greatly increased recently.

Though the thin glass substrate has advantages of being lightweight and capable of realizing high image quality, there is a problem in that it is mechanically weak. In order to compensate for mechanical rigidity, an example of using a protective glass substrate or a touch screen module on the front surface of a liquid crystal panel is increasing.

Such a conventional liquid crystal display device is provided with a panel guide coupled with a backlight unit and is used by bonding a liquid crystal panel to a panel guide by a bonding means such as a double-sided tape. It is common to use a glass substrate or a touch screen module on a liquid crystal panel.

However, such a liquid crystal display device is disadvantageous in that, when a protective substrate or a touch screen module is detached from a liquid crystal panel bonded with a backlight unit in the event of a failure, damage to the liquid crystal panel, in which adhesive pressure is concentrated, there was.

Furthermore, when the panel guide is joined to the panel guide using the joining means, the joining surfaces of the panel guide and the liquid crystal panel become uneven due to the tolerance of the joining means, and pressure is applied to a specific portion of the liquid crystal panel, .

Accordingly, it is an object of the present invention to provide a liquid crystal panel and a backlight unit which can prevent damage to the liquid crystal panel and the backlight unit when the liquid crystal panel and the backlight unit are separated from each other and can be reused, and prevent uneven pressure from being applied to the liquid crystal panel And to provide a liquid crystal display device.

According to an aspect of the present invention, there is provided a liquid crystal display comprising: a backlight unit; A liquid crystal panel disposed on a light exit surface of the backlight unit; A front panel coupled to a front surface of the liquid crystal panel; A first guide panel coupled with the backlight unit; And a second guide panel coupling the protective substrate and the first guide panel.

The first guide panel is coupled to the outer surface of the lower case of the backlight unit, and the inner surface of the second guide panel is coupled to the outer surface of the first guide panel.

A first projection is formed on an outer surface of the lower case, and a first hole is formed in the first guide panel for coupling with the first projection.

The second guide panel is formed with a third hole in the same position as the first hole at a position overlapping the first hole.

A second protrusion is formed on an outer surface of the first guide panel, and a second hole is formed in the second guide panel for coupling with the second protrusion.

A coupling protrusion is formed on an outer surface of the first guide panel, and a coupling protrusion on which the coupling protrusion is mounted is formed on the second guide panel.

Wherein the first guide panel is composed of two pairs of side walls opposed to each other, the coupling protrusion is formed on a pair of side walls of the two pairs of side walls, and the number, And the sizes of the protrusions are different from each other.

The liquid crystal display according to the present invention can prevent the liquid crystal panel and the backlight unit from being damaged when the liquid crystal panel and the backlight unit are separated from each other and can be reused and prevent uneven pressure from being applied to the liquid crystal panel by the bonding means It is possible to do.

1 is an exploded perspective view showing an example of a liquid crystal display device according to the present invention.
FIG. 2 is a perspective view showing a state in which the lower case and the guide panel are combined in FIG. 1; FIG.
3 is a perspective view showing a lower case of the backlight unit.
4 is a perspective view showing only a first guide panel.
5 is a perspective view showing only a second guide panel.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. It should be noted that the drawings denoted by the same reference numerals in the drawings denote the same reference numerals whenever possible, in other drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. And certain features shown in the drawings are intended to be illustrative, not limiting, or reduced, or simplified, and the drawings and elements thereof are not necessarily drawn to scale. However, those skilled in the art will readily understand these details.

1 is an exploded perspective view showing an example of a liquid crystal display device according to the present invention.

1, a liquid crystal display device according to the present invention includes a front panel 10, a liquid crystal panel 20, a guide panel 30, and a backlight unit 100, 1 guide panel 40 and a second guide panel 60 as shown in FIG.

The front panel 10 is coupled to the front surface of the liquid crystal panel 20 to protect the liquid crystal panel 20 and provide added functions. The front panel 10 may be a protective panel or a touch screen panel. However, the present invention is not limited thereto. In the present invention, the front panel 10 may be a protective panel. In addition, when the front panel 10 is a protective panel, the protective panel may be a tempered glass or a synthetic resin panel, but the present invention is not limited thereto.

A liquid crystal panel 20 and a guide panel 30 are coupled to one surface of the front panel 10. Specifically, the upper substrate 21 of the liquid crystal panel 20 is bonded to one surface of the front panel 10. The front panel 10 and the upper substrate 21 may be joined by an adhesive means such as a double-sided adhesive tape, but they may be combined using an adhesive resin for image quality assurance and rigid bonding. That is, the liquid crystal panel 20 and the front panel 10 are bonded together by applying a liquid adhesive resin to one surface of the upper substrate 21 or the front panel 10, curing the liquid crystal panel 20 with the front panel 10, And the adhesive resin used herein may be an ultraviolet curable resin which is cured by ultraviolet rays, but the present invention is not limited thereto.

The front panel 10 is coupled to the second guide panel 60 on one side where the liquid crystal panel 20 is bonded. Specifically, the flange 61 of the second guide panel 60 is joined to the front panel 10 with the liquid crystal panel 20 at the center and on both sides or the portion where the liquid crystal panel 20 is not bonded. The front panel 10 and the second guide panel 60 may be coupled by a coupling means such as a curable resin or a double-sided adhesive tape like the front panel 10, but the present invention is not limited thereto.

The liquid crystal panel 20 is fixedly connected to one surface of the front panel 10 and displays an image by adjusting the transmittance of light supplied from the backlight unit 90. The liquid crystal panel 20 includes an upper substrate 21, a lower substrate 22, and a liquid crystal (not shown) formed between the upper substrate 21 and the lower substrate 22.

The upper substrate 21 is provided with a blue, green, and red color filter, a black matrix (BM), and a common electrode.

In the lower substrate 22, a thin film transistor (Thin Film Transistor) is formed for each cell region defined by data lines and gate lines, and a pixel electrode connected to the thin film transistor is formed. The thin film transistor supplies the data signal supplied from the data line to the pixel electrode in response to the gate signal supplied from the gate line. Here, the common electrode formed on the upper substrate 21 may be formed on the lower substrate 22, and the present invention is not limited by the presented aspects. A non-display region of the lower substrate 22 is provided with a gate pad region connected to each of data lines and gate lines connected to the data lines, respectively.

The data circuit film 23 is connected to the data pad area, and the data circuit film 23 may be composed of a plurality of data circuits. Each data circuit film 23 may be composed of a tape carrier package or a chip on film. The data circuit film 23 receives signals necessary for the realization of data signals and images from a data circuit substrate (not shown), and supplies the signals to each data line. Here, the data integrated circuit 24 may be mounted on the lower substrate 22 by a chip on glass method. In this case, the data integrated circuit 24 mounted on the lower substrate 22 can receive data signals from the data circuit board through the data circuit film 23 and signals necessary for the implementation of the image.

In the gate pad region, a gate circuit film 25 having a gate integrated circuit 26 for supplying a gate signal to the gate lines is coupled, and the gate circuit film 25 may be composed of a plurality of gate circuits. This gate circuit film 25 may also be constituted by a tape carrier patter or a soaking film, or a gate integrated circuit may be formed in the form of a chip on glass mounted on the lower substrate 22. [ The gate circuit film 25 supplies a gate control signal supplied from a gate circuit board (not shown) to the gate integrated circuit 26 and supplies a gate signal supplied from the gate integrated circuit 26 to each gate line .

The guide panel 30 is configured to mutually couple the liquid crystal panel 20 and the backlight unit 90 coupled to the front panel 10 and the front panel 10 and to separate the liquid crystal panel 20 and the backlight unit 90 It is used to fix it and to fix it constantly. To this end, the guide panel 30 includes a first guide panel 40 and a second guide panel 60.

The first guide panel 40 is coupled with the backlight unit 90 to couple the backlight unit 90 to the second guide panel 60. To this end, the first guide panel 40 is coupled to the lower case 80 of the backlight unit 90 and the second guide panel 60.

Specifically, the first guide panel 40 is formed in a frame shape similar to the backlight unit 90. To this end, the first guide panel 40 is composed of two pairs of first panel ribs 44 facing each other, and the first panel ribs 44 are formed as plate-shaped bodies standing in a direction perpendicular to the liquid crystal plane . Here, the wall (drawing number 44) of the first guide panel 40 is referred to as a 'first panel rib 44' and the wall of the second guide panel 65 65 is referred to as a second panel rib 65. The first and second ribs are used to distinguish the components and are not used to distinguish the front and back of the panel) A plurality of coupling means for coupling with the second guide panel 60 or the backlight unit 90 are formed on the first panel ribs 44 of the first guide panel 40. [ The first panel ribs 44 of the first guide panel 40 on the plate are attached to the backlight unit 80 in such a manner as to surround the outer surface of the first panel ribs 44 by the first panel ribs 44 in opposition to the outer surface of the backlight unit 80 . That is, the side wall 82 of the lower case 80 of the backlight unit 80 is overlapped with the first panel rib 44. The outer surface of the first panel rib 44 of the first guide panel 40 is coupled to the inner surface of the second panel rib 65 of the second guide panel 60, The second guide panel 60 is also overlapped.

More specifically, a first hole 41, a second projection 42, and a coupling protrusion 43 are formed on the first panel rib 44 of the first guide panel 40. The first hole 41 is formed through the first panel rib 44 and the second protrusion 42 and the coupling protrusion protrude from the surface of the first panel rib 44.

The first hole 41 is inserted or coupled with the first protrusion 81 formed on the outer surface of the backlight unit 80 when the backlight unit 80 and the first guide panel 40 are coupled. The backlight unit 80 and the first guide panel 40 are coupled by the engagement of the first hole 41 and the first protrusion 81. The second protrusion 42 is inserted into or coupled to the second hole 62 formed in the second panel rib 65 of the second guide panel 60. Whereby the second guide panel 60 and the first guide panel 40 are coupled. The first panel rib 44 is formed with a coupling protrusion 43 which is seated in the coupling tab 64 of the second guide panel 60. The coupling protrusion 43 defines a coupling direction between the first guide panel 40 and the second guide panel 60 when the first guide panel 40 and the second guide panel 60 are coupled to each other, So that the panel 40 is prevented from flowing in the vertical direction on the inner surface of the second guide panel 60.

More specifically, the engaging projections 43 of the first guide panel 40 are formed on at least one of the four first panel ribs 44 and the engaging tabs 64 of the second guide panel 60 are engaged The first panel ribs 44 and the second panel ribs 65 are formed in the shape of a rectangular frame composed of four walls, The coupling jaw 64 has a second protrusion 42 and a first hole 62 joined by a second hole 62. The first protrusion 42 and the second protrusion 42 are connected to each other by a second hole 62. [ The first guide panel 40 and the second guide panel 60 are interlocked with each other to suppress the flow after the first guide panel 40 and the second guide panel 60 are coupled. Particularly, the joining protrusions 43 may be formed on only one of the four first panel ribs 44, or may be formed at different positions on the respective surfaces, thereby changing the joining direction of the joining protrusion 43 and the joining jaw 64 Thereby providing and limiting the directionality of the coupling.

The second guide panel 60 serves to couple the front panel 10 and the backlight unit 90 together. The second guide panel 60 is joined to one surface of the front panel 10 and is parallel or parallel to the front panel 10 at the upper edge of the second panel rib 65 for engagement with the front panel 10. [ A flange 61 is formed which is elongated in a direction perpendicular to the second panel rib 65 surface. The flange 61 is attached or coated with an adhesive tape or a curable resin on the surface facing the front panel 10, so that the front panel 10 and the second guide panel 60 are engaged.

A plurality of holes and a coupling step 64 are formed on a surface of the second panel rib 65 which is a wall of the second guide panel 60. A plurality of second holes 62 are formed on the second panel rib 65 so as to be coupled with the second projections 42 of the first guide panel 40. The second panel rib 65 is formed with a coupling protrusion 64 at a position corresponding to the coupling protrusion 43 of the first guide panel 40. The engaging protrusion 64 is formed as a groove corresponding to the engaging protrusion 43 and the engaging protrusion 43 is seated when the first guide panel 40 and the second guide panel 60 are engaged. On the other hand, in the second guide panel 60, a plurality of third holes 63 are formed at positions corresponding to the positions of the first holes 41 when the first guide panel 40 is coupled. The third hole 63 serves to receive the protrusion of the first protrusion 81 protruding through the first hole 41 and to prevent the first hole 41 and the first protrusion 81 from being engaged It serves as a confirmation window for confirmation.

The backlight unit 90 is disposed below the liquid crystal panel 20, and generates light to supply the liquid crystal panel 20 with light. The backlight unit 90 includes a light source 86, a light guide plate 92, a reflective sheet 91, an optical sheet 95, and a lower case 80.

The lower case 80 accommodates and protects the light source 86, the light guide plate 92, the reflection sheet 91 and the optical sheet 95, Thereby fixing the liquid crystal panel 20 to the lower surface thereof. A plurality of first protrusions 81 coupled to the first holes 41 of the first guide panel 40 are formed on the outer side of the side wall 82 of the lower case 80. [

The light source 86 is mounted on the light source circuit board 87, and is driven by a power source to generate light. The light source 120 may include any one of a light emitting diode (LEd), a cold cathode fluorescent lamp (CCFL), and an external electrode fluorescent lamp (EEFL). The light emitted from the light source 86 enters the inside of the light guide plate 92 and is supplied to the liquid crystal panel 20 by the light guide plate 92, the optical sheet 95 and the reflection sheet 91. The light source 86 is formed to face at least one side of the light guide plate 92.

The optical sheet 95 condenses or diffuses light emitted through the light guide plate 92 to be transmitted to the liquid crystal panel 20. To this end, the optical sheet 95 may be configured to include at least one of the diffusion sheet 93 and the light condensing sheet 94.

The diffusion sheet 93 prevents the light emitted through the light guide plate 92 from concentrating on a part of the region and emits light to be transmitted to the liquid crystal panel 20 in an even distribution. Such a diffusion sheet 93 can be disposed at a place where light dispersion is required, such as between the light collecting sheet 94 and the liquid crystal panel 20, or between the light collecting sheet 94 and the light guide plate 92. The diffusion sheet 93 diffuses light condensed or condensed by the light condensing sheet 94 or the light guide plate 92 to ring the narrow viewing angle of the liquid crystal panel 20, 2). Further, the diffusion sheet 93 may be omitted as necessary, and thus the present invention is not limited thereto. Here, in the present invention, an example in which the diffusion sheet 93 is disposed between the liquid crystal panel 20 and the light condensing sheet 94 will be described in detail.

The light condensing sheet 94 condenses the light emitted from the light guide plate 92 and allows the light to be vertically transmitted to the liquid crystal panel 20. The light collecting sheet 94 is formed with a pattern for collecting light on at least one surface of the upper surface facing the liquid crystal panel 20 and the lower surface facing the light guide plate 92. [ In particular, the light collecting sheet 94 of the present invention may be constituted by a reverse prism sheet formed on a surface facing the light guide plate 92, but the present invention is not limited thereto. The diffusion sheet 93 may be interposed between the light collecting sheet 94 and the liquid crystal panel 20 or the light collecting sheet 94 may be composed of two or more sheets. However, the present invention is not limited thereto.

The reflective sheet 91 is disposed on the lower side or the side surface of the light guide plate 92 and reflects light emitted to the light exit surface of the light guide plate 92 or the lower portion thereof into the light guide plate 92. The reflective sheet 91 may be formed at different positions depending on the arrangement of the light sources 86. For example, as shown in FIG. 1, the edge type backlight unit may be disposed on the lower surface of the light guide plate 92, that is, on the surface facing the liquid crystal panel 20 with the light guide plate 92 interposed therebetween. In the case of the direct-type backlight unit, it may be formed on the side surface of the light guide plate 92 or may be omitted if necessary, and it is not limited only to what is shown and can be modified by various factors such as the arrangement of the light sources 86.

The light guide plate 92 guides the light supplied from the light source 86, and condenses or diffuses the light to output the light to the liquid crystal panel 20.

FIG. 2 is a perspective view showing a state in which the lower case and the guide panel are combined with each other in FIG. 1. FIG. FIG. 3 is a perspective view showing a lower case of the backlight unit, FIG. 4 is a perspective view showing only a first guide panel, and FIG. 5 is a perspective view showing only a second guide panel.

2 to 5, the lower case 80 may be formed in the shape of a container having a receiving space therein as shown in FIG. In the present invention, an example in which the lower case is formed by a rectangular face having one side opened is shown. The lower case 80 is composed of a bottom body 83 and a side wall 82 and the side wall 82 is formed extending from the edge of the bottom body 83 in a direction perpendicular to the bottom body 83.

Particularly, on the outer surface of the side wall 82, a plurality of first protrusions 81 are formed as described above. The first protrusion 81 may be integrally formed with the lower case 80 when the lower case 80 is formed or may be formed by joining protrusions formed separately to the side wall 82 of the lower case 80 . Here, the lower case 80 may be formed by extruding and compressing a metal such as thermally conductive resin or aluminum to secure heat dissipation and mechanical rigidity. In this case, the first protrusion 81 may be formed at the time of forming the lower case 80, but the present invention is not limited thereto. In addition, it is preferable that the first protrusions 81 are formed on two or more sidewalls 82 for firm connection with the first guide panel 40, but the present invention is not limited thereto.

The first guide panel 40 is coupled to the outer surface of the side wall 82 of the lower case 80, that is, the surface on which the first protrusion 42 is formed. The inner surface of the panel rib 44 of the first guide panel 40 is in contact with the outer surface of the side wall 82 of the lower case 80 and the first protrusion 42 is inserted into the first hole 41, .

4, the panel ribs 44 of the first guide panel 40 may be formed in the shape of a rectangular frame so that four panel ribs 44 may be continuously formed, . Each panel rib 44 may have a plurality of first holes 41 and second projections 42 as shown in FIG. 4, a coupling protrusion 43 is formed at the lower end of the panel ribs 44 of the first guide panel 40. As shown in FIG. 4, when the first guide panel 40 is coupled with the second guide panel 60, a portion corresponding to the upper end of the first guide panel 40 is first inserted and engaged. In addition to the engagement by the second projection 42, (43) is seated on the engaging step (64).

Meanwhile, the first guide panel 40 may have a seating portion 46 as shown in FIG. The seat portion 46 is formed by extending from the upper end of a pair of opposing panel ribs 44 to the panel ribs 44 extending perpendicularly to the surface of the panel ribs 44 and facing each other. The liquid crystal panel 20 is seated on the upper surface 46a of the seat portion 46 and the backlight unit 90 is seated on the lower surface 46b. At this time, the seating part 46, the liquid crystal panel 20, the seating part 46, and the backlight unit 90 may be separated without being closely contacted with each other, but the present invention is not limited thereto.

Similarly, the second guide panel 60 is also constituted by a plurality of panel ribs 65. The panel ribs 65 are integrally formed to constitute a second guide panel 60 in the form of a rectangular frame. Particularly, the second guide panel 60 is provided with a flange 65 for joining with the front panel 10.

A plurality of second and third holes 62 and 63 are formed in the panel ribs 65 of the second guide panel 60. The second hole 62 is used to engage the second guide panel 60 and the first guide panel 40 by being engaged with the second projecting portion 42. The third hole 63 is formed at a position corresponding to the position where the first hole 41 of the first guide panel 60 is formed to check the coupling state between the first hole 41 and the first projection 81, And is used as a space for accommodating the excess of the first protrusion 81 protruding through the first hole 41.

The guide panel 30 according to the present invention is different from the conventional one in that the liquid crystal panel 20 is joined to the front panel 10 by a method such as bonding and the front panel 10 and the second guide panel 60 . The first guide panel 40 and the second guide panel 60 are coupled to each other after the backlight unit 90 and the first guide panel 40 are coupled to each other so that the liquid crystal panel 20, The backlight unit 90 is coupled.

As described above, in the present invention, the liquid crystal panel 20 is bonded to the front panel 10, but the connection with the panel guide 30 is made between the front panel 10 and the liquid crystal panel 20. The front panel 10 is coupled to the flange 61 of the second guide panel 60 and supported. The pressure applied to the front panel 10 is applied to the second guide panel 60 and the pressure is dispersed by the first guide panel 40 and the lower case 80. As a result, 20 can be reduced. In addition, since the liquid crystal panel 20 is not bonded to the guide panel 30 by the adhesive means, concentration and irregularity of pressure generated locally in the liquid crystal panel 20 by confinement of the adhesive means do not occur, And deterioration of image quality can be prevented. In addition, even when pressure is concentrated on the guide panel 30 and breakage occurs during disassembly of the liquid crystal display device, any one of the guide panels 30 is damaged, thereby increasing the recycling rate for each configuration of the liquid crystal display device.

The guide panel 30 and the first guide panel 40 may be manufactured using materials having weak mechanical rigidity or elasticity as compared with the second guide panel 60 or the front panel 10, It is possible to protect the liquid crystal panel 20 and the backlight unit 80 by causing elongation, bending or breakage due to pressure during bonding and separation. However, the present invention is not limited thereto.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, . ≪ / RTI > Accordingly, such modifications are deemed to be within the scope of the present invention, and the scope of the present invention should be determined by the following claims.

10: front panel 20: liquid crystal panel
21: upper substrate 22: lower substrate
30: guide panel 40: first guide panel
41: first hole 42: second projection
43: coupling projection 44: panel rib
60: second guide panel 62: second hole
63: third hole 64: coupling jaw
65: panel rib 80: lower case
81: first protrusion 82: side wall
83: bottom body 86: light source
87: light source circuit board 90: backlight unit
91: reflective sheet 92: light guide plate
93: condensing sheet 94: diffusion sheet
95: Optical sheet

Claims (7)

Backlight unit;
A liquid crystal panel disposed on a light exit surface of the backlight unit;
A front panel coupled to a front surface of the liquid crystal panel;
A first guide panel coupled with the backlight unit; And
And a second guide panel coupling the front panel and the first guide panel. The method according to claim 1,
The first guide panel is coupled to the outer surface of the lower case of the backlight unit,
And the inner surface of the second guide panel is coupled to the outer surface of the first guide panel. 3. The method of claim 2,
A first protrusion is formed on an outer surface of the lower case,
Wherein the first guide panel is formed with a first hole for coupling with the first protrusion. The method of claim 3,
And a third hole in the same phase as the first hole is formed in the second guide panel at a position overlapping the first hole. 3. The method of claim 2,
A second protrusion is formed on the outer surface of the first guide panel,
And the second guide panel is formed with a second hole for coupling with the second protrusion. 3. The method of claim 2,
A coupling protrusion is formed on an outer surface of the first guide panel,
And the second guide panel is formed with a coupling protrusion on which the coupling protrusion is seated. The method according to claim 6,
Wherein the first guide panel comprises two pairs of side walls facing each other,
Wherein the coupling protrusion is formed on a pair of sidewalls of the two pairs of sidewalls, and each of the pair of sidewalls is formed with at least one of a number of protrusions, a formation position, Display device.

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