KR20070074384A - Display device - Google Patents

Abstract

A display device is provided to apply the pressure in a combining process to a mold frame and to support the mold frame by a receiving container. A backlight unit(30) irradiates the light beam toward the rear of an LCD panel(10). A receiving container(80) has a bottom surface formed in parallel to the LCD panel and a container sidewall curved upwardly from the bottom surface and for forming a receiving space. The backlight unit is received to the receiving space. A mold frame(25) is formed along the edge of the LCD panel and has a frame supported by the container sidewall and a mold sidewall curved downwardly. An upper cover(90) covers the receiving container and has a front member having a display window and a cover side member curved downwardly from the front member. A hooking member and a protrusion receiving member arranged at the circumference of the hooking member are formed at the cover side member. A protrusion(24) is formed at the mold sidewall and received to the protrusion receiving member.

Description

Display {DISPLAY DEVICE}

1 is an exploded perspective view of a liquid crystal display according to a first embodiment of the present invention;

2 is a perspective view of main parts of the upper cover according to the first embodiment of the present invention;

3 is a view for explaining a state in which the upper cover according to the first embodiment of the present invention is coupled to the storage container,

Figures 4a and 4b is a view for explaining the removable position and the binding position of the upper cover and the receiving container according to IV-IV of Figure 3,

5a and 5b is a view for explaining the removable position and the binding position of the upper cover and the receiving container according to V-V of Figure 3,

6A to 6D are cross-sectional views of main parts of a display device according to a second exemplary embodiment of the present invention.

7A to 7D are cross-sectional views illustrating main parts of the display device according to the third embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10 liquid crystal panel 11: thin film transistor substrate

12 color filter substrate 20 drive unit

21: flexible printed circuit board 22: driving chip

23: circuit board 24: projection

25: mold frame 26: frame

27: mold side wall 28: seating portion

29 opening 30 backlight unit

40: optical sheet 50: light source

51: light source body 53: light source electrode

60: light source support member 70: reflective sheet

80: storage container 81: coupling hole

82: bottom 83: container side wall

84: snap portion 90: upper cover

91: front side 92: cover side

93: engaging portion 94: fastening hole

95: protrusion 98: protrusion receiving portion

99: receiving port

The present invention relates to a display device, and more particularly, to a display device capable of minimizing deformation of a storage container.

Recently, a flat panel display such as a liquid crystal display (PDP), a plasma display panel (PDP), an organic light emitting diode (OLED), etc. has been developed in place of the conventional CRT.

Among them, the liquid crystal display includes a thin film transistor substrate, a color filter substrate, and a liquid crystal panel in which liquid crystal is injected between both substrates. Since the liquid crystal panel is a non-light emitting device, a backlight unit for supplying light is disposed on the rear surface of the thin film transistor substrate. Light transmitted from the backlight unit is adjusted according to the arrangement of liquid crystals.

Here, the liquid crystal panel and the backlight unit are accommodated and supported between the upper cover and the storage container. Although the storage container and the upper cover are required to be thin, light and small in nature, they are required to have a strong resistance to protect the liquid crystal panel and the backlight unit from impact. Each of the storage container and the upper cover is provided with a catching portion and a catching portion for coupling both to each other, and are fastened by sliding the biting portion and the catching portion against each other when pressed.

However, there is a problem that the storage container sags or bends inwardly due to the pressure applied to the storage container during the sliding contact between the bite portion and the locking portion. Thereby, there is a problem in that the shape of the storage container is deformed and the assemblability is reduced.

Accordingly, an object of the present invention is to provide a display device capable of minimizing deformation of a storage container.

The above object is, according to the present invention, a liquid crystal panel; A backlight unit irradiating light onto the rear surface of the liquid crystal panel; A storage container having a bottom surface parallel to the liquid crystal panel and a container side wall bent upward from the bottom surface to form an accommodation space in which the backlight unit is accommodated; A mold frame formed between the liquid crystal panel and the backlight unit along an edge of the liquid crystal panel and having a frame supported on the container side wall and a mold side wall bent downward from the frame; Covering the storage container to accommodate the liquid crystal panel, the mold frame and the backlight unit therein, and includes a front cover having a front portion formed with a display window for exposing a portion of the liquid crystal panel and a cover side portion bent downward from the front portion, the lid The side part is provided with a locking part and a projection receiving part provided around the locking part, and the container side wall is provided with a bite part defining a detachable position and a binding position by interaction with the locking part, and the mold side wall is provided until it reaches the binding position. It is achieved by the display device, characterized in that the projection is accommodated to maintain the locking portion and the bite portion and the projection is accommodated in the projection receiving portion when reaching the binding position.

Here, a protrusion protruding in the receiving space direction is provided around the engaging portion of the cover side portion, and the protrusion accommodation portion may be defined as a space between the protrusion and the front portion.

In addition, the protrusion may have a higher height in the direction of the accommodation space from the cover side portion than the locking portion.

Here, the protruding portion may be provided with a contact surface inclined so as to be in sliding contact with the protrusion.

In addition, the protrusion may be provided with a corresponding contact surface inclined so as to make sliding contact with the protrusion.

Also, the distance between the bottom and the end of the protrusion adjacent to the bottom may be shorter than the distance between the bottom and the end of the engaging portion adjacent to the bottom.

The locking portion may protrude inward from the cover side surface portion and have an inclined surface in sliding contact with the bite portion.

In addition, the bite portion may protrude outward from the container side wall and may have a corresponding inclined surface that is inclined so as to be in sliding contact with the inclined surface.

Here, the locking portion protrudes outward from the cover side surface portion, and the bleeding portion protrudes outward from the container side wall and may be partially accommodated in the locking portion at the binding position.

And, the bite portion is recessed inwardly from the container side wall, the locking portion protrudes inwardly from the cover side surface portion may be partially accommodated in the bite portion at the binding position.

Here, the mold side wall may be provided with an opening for exposing the seating portion and the bite portion in which the protrusion is accommodated.

In addition, the cover side surface portion may be formed with a fastening hole for inserting the bite portion in the upper region of the locking portion.

An object of the present invention, according to the present invention, liquid crystal panel; A backlight unit radiating light to the rear surface of the liquid crystal panel; A storage container having a bottom surface parallel to the liquid crystal panel and a container side wall bent upward from the bottom surface to form an accommodation space in which the backlight unit is accommodated; A mold frame formed between the liquid crystal panel and the backlight unit along an edge of the liquid crystal panel and having a frame supported on the container side wall and a mold side wall bent downward from the frame; Covering the storage container to accommodate the liquid crystal panel, the mold frame and the backlight unit therein, and includes a front cover having a display window for exposing a portion of the liquid crystal panel and an upper cover having a cover side portion bent downward from the front portion, the cover side portion The receiving portion is provided in the upper portion of the locking portion and the locking portion, and the container side wall is provided with a bite portion defining a detachable position and a binding position by interaction with the locking portion, and the mold side wall is caught until the binding position is reached. It is achieved by a display device, characterized in that the projections are inserted into the receiving openings while keeping the parts and the bites apart and reach the binding position.

Here, the height of the projection from the container side wall to the outward direction may be greater than the sum of the height of the engaging portion from the lid side wall to the inward direction and the height of the bite portion from the container side wall to the outward direction.

Hereinafter, a liquid crystal display according to the present invention will be described in detail with reference to the accompanying drawings.

Prior to the description, in the present specification, a direct type liquid crystal display device is described as an embodiment among various display devices, but the present invention is not limited thereto, and may be applied to other display devices having an upper cover and a storage container as well as an edge type liquid crystal display device. have.

1 is an exploded perspective view of a liquid crystal display according to a first embodiment of the present invention, FIG. 2 is a perspective view of a main portion of an upper cover according to the first embodiment of the present invention, and FIG. 3 is a first embodiment of the present invention. 4A and 4B are views for explaining a detachment position and a binding position of the upper cover and the storage container according to IV-IV of FIG. 3, and FIG. 5A. And FIG. 5B is a view for explaining a detachment position and a binding position of the upper cover and the storage container according to VV of FIG. 3.

As shown in FIG. 1, the liquid crystal display device 1 supports a liquid crystal panel 10 that forms an image, a driver 20 that drives the liquid crystal panel 10, and an edge of the liquid crystal panel 10. A mold frame 25, a backlight unit 30 for irradiating light to the rear surface of the liquid crystal panel 10, a storage container 80 for receiving the backlight unit 30 and supporting the mold frame 25; The upper cover 90 is coupled to the storage container 80 and covers the edge of the liquid crystal panel 10.

The liquid crystal panel 10 is injected between the thin film transistor substrate 11, the color filter substrate 12 attached to face the thin film transistor substrate 11, and the thin film transistor substrate 11 and the color filter substrate 12. It includes a liquid crystal (not shown). In addition, the liquid crystal panel 10 further includes polarizing plates 13 and 14 attached to the front surface of the color filter substrate 12 and the rear surface of the thin film transistor substrate 11 such that light passing through the liquid crystal panel 10 is cross-polarized. Include. The liquid crystal panel 10 is arranged in a matrix form of the liquid crystal cells forming a pixel unit, and forms an image by adjusting the light transmittance of the liquid crystal cells according to the image signal information transmitted from the driver 20.

In the thin film transistor substrate 11, a plurality of gate lines and a plurality of data lines are formed in a matrix form, and thin film transistors (TFTs) are formed at intersections of the gate lines and the data lines. The signal voltage transmitted from the driver 20 is applied between the pixel electrode and the common electrode of the color filter substrate 12, which will be described later, through the thin film transistor, and the liquid crystal between the pixel electrode and the common electrode is aligned according to the signal voltage to provide light. The transmittance is determined.

The color filter substrate 12 includes a color filter and a common electrode, which are formed by repeating red, green and blue or cyan, magenta, and yellow on the black matrix. The common electrode is made of a transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO). The color filter substrate 12 has a smaller area than the thin film transistor substrate 11.

The front polarizer 13 and the rear polarizer 14 are disposed to cross-polarize each other, the rear polarizer 14 polarizes the light incident on the liquid crystal panel 10, and the front polarizer 13 serves as an analyzer.

One side of the thin film transistor substrate 21 is provided with a driver 20 for applying a drive signal. The driving unit 20 includes a flexible printed circuit board (FPC. 21), a driving chip 22 mounted on the flexible printed circuit board 21, and a circuit board connected to the other side of the flexible printed circuit board 21. PCB, 23). The illustrated driver 20 shows a chip on film (COF) method, and other known methods such as a tape carrier package (TCP) and a chip on glass (COG) may be used. In addition, the driver 20 may be formed on the thin film transistor substrate 21 during the wiring formation process. The driver 20 has terminals for electrically connecting the gates of the driver 20 mounted on the thin film transistor substrate 11 and extending from the display area to the non-display area. It is connected to the end of the data line.

The mold frame 25 is formed along the edge of the liquid crystal panel 10 and has a substantially rectangular shape. The mold frame 25 supports the liquid crystal panel 10 spaced apart from the backlight unit 30. The mold frame 25 is formed along the edge of the liquid crystal panel 10 and is supported by the container side wall 83 of the storage container 80 to be described later, and the mold side wall bent downward from the frame 26 ( 27 and a projection 24 protruding outward from the frame 26. A support surface for supporting the edge of the liquid crystal panel 10 is provided on the upper surface of the frame 26, and the back surface of the support surface is supported by the container side wall 83. An outer surface of the mold side wall 27 is formed with a mounting portion 28 recessed to a predetermined depth so that the protrusion 95 to be described later is seated, and an opening 29 exposing the biting portion 84 to be described later. The protrusion 24 protrudes outward from one end of the frame 26. The protrusion 24 keeps the locking portion 93 and the locking portion 84 spaced apart until the locking portion 93 and the locking portion 84 are coupled to each other to reach a binding position, which will be described later. When the container 80 is in the binding position, the protrusions 24 are at least partially accommodated in the protrusion receiving portion 98. The distance d4 (see FIG. 6A) from the container side wall 83 to the end of the protrusion 24 is equal to the height d1 of the locking portion 93 when combined with the protruding height d2 of the protrusion 95. It is preferable that the height of the bite 84 is greater than the sum of the heights d (see Fig. 6C). In addition, one surface of the protrusion 24 is provided with a corresponding contact surface a (see Fig. 5A) inclined so as to be in sliding contact with the protrusion 95 to be described later.

The backlight unit 30 includes an optical sheet 40 disposed parallel to the rear surface of the liquid crystal panel 10, and a light source unit 50 that irradiates light to the rear surface of the liquid crystal panel 10 through the optical sheet 40. And a light source support member 60 fixed to the storage container 80 to support the light source unit 50, and provided between the light source unit 50 and the storage container 80 to uniformly irradiate light emitted from the light source unit 50. Spread it includes a reflective sheet 70 to be directed to the back of the liquid crystal panel 10.

The optical sheet 40 includes a protective sheet 41, a prism sheet 43, and a diffusion sheet 45 positioned on the rear surface of the liquid crystal panel 10. The diffusion sheet 45 is composed of a base plate and a bead-shaped coating layer formed on the base plate. The diffusion sheet 45 serves to diffuse the light from the light source 51 and supply it to the liquid crystal panel 10. The diffusion sheet 45 may be used by overlapping two or three sheets. The prism sheet 43 is formed with a triangular prism-like prism on an upper surface thereof. The prism sheet 43 collects light diffused from the diffusion sheet 45 in a direction perpendicular to the plane of the upper liquid crystal display panel 10. Two prism sheets 43 are usually used, and the micro prisms formed on each prism sheet 43 are at an angle. Light passing through the prism sheet 43 almost passes vertically to provide a uniform luminance distribution. The uppermost protective sheet 41 protects the prism sheet 43 that is weak to scratches.

The light source unit 50 includes a light source body 51 that emits light and a light source electrode 53 formed at an end of the light source body 51, and receives power from an inverter (not shown). The plurality of light source parts 50 are arranged over the entire surface of the liquid crystal panel 10 in parallel with each other. A cold cathode fluorescent lamp (CCFL) may be used as the light source unit 50, and may have high brightness, low cost, and low power consumption. The plurality of light source units 50 may be driven by one inverter (not shown). External Electrode Fluorescent Lamps (EEFLs) may also be used. In addition, although not shown, a flat fluorescent lamp (FFL) may be used to uniformly light the surface and generate light having no thickness. Compared with other conventional light sources, the surface light source has advantages of high luminance and uniformity of luminance, low power consumption, and long lifespan.

The light source supporting member 60 is a light source supporting member 60 from a plate-shaped support body portion, a light source holder portion protruding upward from the support body portion to support the light source body 51 of the light source portion 50, and a support body portion. It includes a hook portion protruding downward and inserted into the coupling hole 81 of the storage container 80 to be described later. The light source supporting member 60 by this configuration is coupled to the storage container 80 to support the light source unit 50 and to protect it from external impact.

The reflective sheet 70 is positioned between the light source unit 50 and the storage container 80 to reflect the light of the light source unit 50 and to supply the light toward the diffusion film 45. The reflective sheet 70 may be made of polyethylene terephthalate (PET) or polycarbonate (PC). The reflective sheet 70 is attached to the bottom surface of the storage container 80, and the hole 71 through which the hook portion of the light source support member 60 is formed is provided at the coupling hole 81 is formed.

The storage container 80 has a bottom surface 82 parallel to the liquid crystal panel 10 and a container side wall 83 which is bent upward from the bottom surface 82 to form an accommodation space (not shown) in which the backlight unit 30 is accommodated. It includes. Here, the accommodation space (not shown) is defined as a space in which the backlight unit 30 formed by the bottom surface 82 and the container side wall 83 is accommodated. The bottom surface 82 is provided with a plurality of coupling holes 81 formed so that the hook portion of the light source support member 60 described above is inserted and fastened. The back surface unit 30 is seated on the bottom surface 82, and a gripping portion 84 protruding outward is provided on the outer surface of the container side wall 83. The engagement portion 84 is provided with a corresponding inclined surface d (see FIG. 5B) inclined so as to be in sliding contact with the engaging portion 93.

The upper cover 90 has a front portion 91 that forms a display window so that the effective surface of the liquid crystal panel 10 is exposed to the outside, and a cover side portion 92 bent downward from the front portion 91, and the liquid crystal panel 10. ) And the mold frame 25 and the storage container 80 are combined with the storage container 80.

The inner surface of the cover side portion 92 is provided on both sides with a locking portion 93 projecting inwardly, a fastening hole 94 provided in the upper region of the locking portion 93, and the locking portion 93. A pair of protrusions 95 protruding inwardly are provided. The locking portion 93 defines a binding position coupled to a detachable position before the storage container 80 and the upper cover 90 are coupled to each other by interaction with the bite 84. One surface of the locking portion 93 is provided with an inclined surface c (see Fig. 5B) inclined so as to be in sliding contact with the corresponding inclined surface d of the above-described biting portion 84. The fastening hole 94 is a hole into which at least a part of the biting portion 84 is inserted when reaching the binding position to secure the coupling between the storage container 80 and the upper cover 90. The protrusions 95 are arranged such that the distance between the ends of the adjacent protrusions 95 and the bottom surface 82 at the bottom surface 82 is shorter than the distance between the ends and the bottom surface 82 of the adjacent locking portions 93 at the bottom surface 82. It is. The width of the protrusion 95 in the engagement direction is larger than the width of the locking portion 93 in the engagement direction. In addition, the protruding portion 95 is provided so that the height from the cover side portion 92 to the receiving space direction is higher than the catching portion 93, and the contact surface inclined so as to slide in contact with the protrusion 24 (see Fig. 4A). Is formed. The protrusion receiving portion 98 is defined as the space between the protrusion 95 and the front portion 91, and the protrusion 24 is received when in the binding position.

With this configuration, the operation and effects of the display device according to the exemplary embodiment of the present invention will be described with reference to FIGS. 3 to 5B.

First, as shown in Figure 3, the upper cover 90 is pressed in the direction of the storage container (80). Here, the protrusion 95 has a shorter distance between the end of the adjacent protrusion 95 and the bottom 82 on the bottom 82 than the distance between the end of the engaging portion 93 and the bottom 82 on the bottom 82. Since the protrusions 95 are first contacted with the protrusions 24.

In the upper cover 90, as shown in FIG. 4A, the contact surface b of the protruding portion 95 is in sliding contact with the corresponding contact surface a of the protrusion 24. As shown in FIG. At this time, as shown in Fig. 5A, since the protrusion 95 is provided so that the height from the cover side portion 92 to the receiving space direction is higher than the catching portion 93, the catching portion 93 is the catch portion 83 ) Is spaced apart by a predetermined distance d3. That is, in the detachable position, the locking portion 93 and the biting portion 83 are kept apart by the interaction of the protrusion 95 and the protrusion 24. As a result, since the storage container 80 receives less pressure when the upper cover 90 is coupled, deformation of the storage container 80 sag or bent inward is minimized. Then, the pressure applied when the coupling is applied to the mold frame 25, since the mold frame 25 is supported by the storage container 80, deformation of the storage container 80 due to the coupling pressure is minimized.

When the receiving container 80 and the upper cover 90 reaches the binding position, as shown in Figs. 4b and 5b, the protrusions 24 are at least partially accommodated in the protrusion accommodating portion 98, the protrusions 95 Is seated on the seat 28. In addition, the locking portion 93 is coupled to the locking portion 84 and at least a portion of the locking portion 84 is accommodated in the fastening hole 94.

Hereinafter, the second and third embodiments of the present invention will be described with reference to FIGS. 6A to 7D. In the following description, only the characteristic parts distinguished from the first embodiment will be described, and the descriptions thereof will be omitted according to the first embodiment or known technology. In addition, the same components will be described with the same reference numerals for convenience of description.

6A to 6D are views for explaining a second embodiment according to the present invention.

Unlike the first embodiment, the upper cover 90 according to the second embodiment is not provided with a protrusion, and instead of the protrusion accommodating part, a receiving hole 99 is provided. In addition, the protrusions 24 are firstly directed outwardly so that the locking portion 93 and the biting portion 84 are separated from each other by a predetermined distance d3 when the storage container 80 and the upper cover 90 are coupled to each other. It is further protruded compared with the protrusion of an Example. That is, as shown in Figs. 6A and 6C, the height d4 of the protrusion 24 in the inward direction from the container side wall 83 is equal to the height of the locking portion 93 in the inward direction from the lid side surface portion 92. The height of the engagement portion 84 in the outward direction from the container side wall 83 is provided so as to be larger than the combined distance d5.

The operation and effects of the display device according to the second embodiment by the above configuration will be described. As shown in FIG. 6A, when the upper cover 90 is pressed toward the storage container 80, the cover side portion 92 gradually covers the storage container 80 while slidingly contacting with the protrusion 24. At this time, as shown in Fig. 6C, the projection 24 has a height d4 inward from the container side wall 83 and a height of the engaging portion 93 inward from the lid side surface 92. Since the height of the engagement portion 84 in the outward direction from the container side wall 83 is provided to be larger than the sum of the distances d5, the locking portion 93 is kept apart from the engagement portion 83 by a predetermined distance d3. do. That is, in the detachable position, the locking portion 93 and the biting portion 83 are spaced apart by the protrusions 24. As a result, since the storage container 80 receives less pressure when the upper cover 90 is coupled, deformation of the storage container 80 sag or bent inward is minimized. Then, the pressure applied when the coupling is applied to the mold frame 25, since the mold frame 25 is supported by the storage container 80, deformation of the storage container 80 due to the coupling pressure is minimized.

Then, when the storage container 80 and the upper cover 90 reaches the binding position, as shown in Figure 6b and 6d, the projection 24 is at least partly accommodated in the receiving port 99, the cover side portion ( Part of 92 is seated in seating portion 28. In addition, the locking portion 93 is coupled to the locking portion 84 and at least a portion of the locking portion 84 is accommodated in the fastening hole 94.

7A to 7D are views for explaining a third embodiment according to the present invention.

In the upper cover 90 according to the third embodiment, unlike the first embodiment, the locking portion 93 protrudes outward from the cover side surface portion 92. The sum of the height d2 of the protrusion 95 and the height d4 of the protrusion 24 is provided to be larger than the height d6 of the engagement portion 84.

With this configuration, as shown in FIG. 7A, when the upper cover 90 is pressed in the direction of the storage container 80, the protrusion 95 gradually covers the storage container 80 while slidingly contacting with the protrusion 24. . At this time, as shown in Figs. 7A and 7C, the protrusion 24 has a height d2 of the protrusion 95 and a height d4 of the protrusion 24 than the height d6 of the engagement portion 84. Since the locking portion 93 is provided to be higher, the locking portion 93 is kept spaced apart from the stitch portion 83 by a predetermined distance d3. That is, in the detachable position, the locking portion 93 and the biting portion 83 are spaced apart by the protrusions 24. As a result, since the storage container 80 receives less pressure when the upper cover 90 is coupled, deformation of the storage container 80 sag or bent inward is minimized. Then, the pressure applied when the coupling is applied to the mold frame 25, since the mold frame 25 is supported by the storage container 80, deformation of the storage container 80 due to the coupling pressure is minimized.

When the storage container 80 and the upper cover 90 reach the binding position, as shown in FIGS. 7B and 7D, the protrusions 24 are at least partially accommodated in the protrusion accommodating part 98 and the protrusions ( 95 is seated on seating portion 28. In addition, the locking portion 93 is coupled to the locking portion 84 and at least a portion of the locking portion 84 is accommodated in the fastening hole 94.

Hereinafter, although not shown, another embodiment according to the present invention will be described. For convenience of explanation, this will be described with reference to FIG. 5A. The engagement portion 84 of the storage container 90 according to another embodiment is recessed in the inward direction of the container side wall 83. The other structure is the same as that of the first embodiment. By such a structure, as the storage container 80 and the upper cover 90 are coupled, at least a part of the locking portion 93 in the binding position is received and coupled to the inside of the engagement portion 84.

As described above, a display device with minimal deformation of the storage container may be provided.

Claims (14)

A liquid crystal panel; A backlight unit radiating light to the rear surface of the liquid crystal panel; A storage container having a bottom surface parallel to the liquid crystal panel and a container side wall bent upward from the bottom surface to form an accommodation space in which the backlight unit is accommodated; A mold frame formed between the liquid crystal panel and the backlight unit along an edge of the liquid crystal panel and having a frame supported on the container side wall and a mold side wall bent downward from the frame; An upper cover which covers the storage container to accommodate the liquid crystal panel, the mold frame, and the backlight unit, and has a front portion having a display window exposing a portion of the liquid crystal panel and a cover side portion bent downward from the front portion; Including; The cover side portion is provided with a locking portion and a projection receiving portion provided around the locking portion, and the container side wall is provided with a bite portion defining a detachable position and a binding position by interaction with the locking portion, and the mold side wall has a binding portion. And the projections accommodated in the projection accommodation portion when the locking portion and the bite portion are separated from each other until reaching the position and the binding position is reached. The method of claim 1, And a protrusion protruding in the direction of the accommodation space around the locking portion of the cover side portion, and the protrusion accommodation portion is defined as a space between the protrusion and the front portion. The method of claim 2, And the protrusion has a higher height from the cover side portion toward the accommodation space than the locking portion. The method of claim 3, And the protruding portion is provided with an inclined contact surface to be in sliding contact with the protrusion. The method of claim 3, And a corresponding contact surface that is inclined to slide in contact with the protrusion. The method of claim 3, And a distance between an end portion of the protruding portion adjacent to the bottom surface and the bottom surface is shorter than a distance between the end portion of the locking portion adjacent to the bottom surface and the bottom surface. The method of claim 6, And the locking portion protrudes inward from the cover side surface portion and has an inclined surface in sliding contact with the snap portion. The method of claim 7, wherein And the engaging portion protrudes outward from the container side wall and has a corresponding inclined surface inclined so as to be in sliding contact with the inclined surface. The method of claim 6, And the latching portion protrudes outwardly from the cover side surface portion, and the catching portion protrudes outwardly from the container side wall and partially accommodated in the locking portion at the binding position. The method of claim 6, And the gripping portion is recessed inwardly from the container side wall, and the locking portion protrudes inwardly from the cover side surface portion and is partially accommodated in the gripping portion at the binding position. The method of claim 6, And the opening for exposing the seating portion in which the protrusion is accommodated and the biting portion in the mold side wall. The method of claim 6, And a fastening hole into which the bite portion is inserted in an upper region of the locking portion. A liquid crystal panel; A backlight unit radiating light to the rear surface of the liquid crystal panel; A storage container having a bottom surface parallel to the liquid crystal panel and a container side wall bent upward from the bottom surface to form an accommodation space in which the backlight unit is accommodated; A mold frame formed between the liquid crystal panel and the backlight unit along an edge of the liquid crystal panel and having a frame supported on the container side wall and a mold side wall bent downward from the frame; An upper cover which covers the storage container to accommodate the liquid crystal panel, the mold frame, and the backlight unit, and has a front portion having a display window exposing a portion of the liquid crystal panel and a cover side portion bent downward from the front portion; Including; The cover side portion is provided with a receiving portion in the engaging portion and the upper region of the engaging portion, the container side wall is provided with a bite defining the detachable position and the binding position by the interaction with the engaging portion, the mold side wall And the projection is inserted into the receiving port while the latching portion and the bite portion are separated from each other until reaching the position and the locking portion is reached. The method of claim 1, The height of the projection from the container side wall in the outward direction, And a sum of the height of the locking portion in the inward direction from the lid side wall and the height of the bite portion of the container side wall in the outward direction.

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