KR102165801B1 - Liquid crystal display device - Google Patents

Abstract

The present invention relates to a liquid crystal display device.
A liquid crystal display device according to the present invention includes a liquid crystal panel, a backlight unit positioned on the rear surface of the liquid crystal panel, and a cover buttome including a plurality of embossed portions protruding from the rear surface of the backlight unit. A module, a fastening means consisting of a screw that is coupled and fastened to the femoral nut and a pm nut inserted into the embossed portion, and a system board mounted on the rear surface of the cover butt through the fastening means, wherein the pem nut has an outer peripheral surface A portion of the embossed portion is inserted into each of the plurality of coupling grooves, including a plurality of coupling grooves formed along the line, while being inserted into the embossed portion and fixed.

Description

Liquid crystal display device {LIQUID CRYSTAL DISPLAY DEVICE}

The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device having high reliability.

The liquid crystal display device (LCD), which is advantageous for displaying moving images and has a large contrast ratio, is actively used in TVs and monitors. The optical anisotropy and polarization of liquid crystals The principle of image implementation is shown.

Such a liquid crystal display device uses a liquid crystal panel bonded by interposing a liquid crystal layer between two parallel substrates as an essential component, and a difference in transmittance is realized by changing the alignment direction of liquid crystal molecules by an electric field in the liquid crystal panel. do.

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

Such a backlight unit includes a light source, and is classified into a direct type and an edge type according to the position of the light source.

In the direct type backlight unit, the light emitted from the light source is directly supplied to the liquid crystal panel by placing a light source under the liquid crystal panel, and in the side type backlight unit, a light guide plate is disposed under the liquid crystal panel, and the light source is at least of the light guide plate. By arranging it on one side, it is a method of indirectly supplying light emitted from a light source to the liquid crystal panel using refraction and reflection from the light guide plate.

Such a backlight unit and a liquid crystal panel are modularized into a liquid crystal display module by combining a top cover and a cover top covering the front edge of the liquid crystal panel at the front and rear sides, while the edge is surrounded by a rectangular frame-shaped support main.

In addition, the front cover surrounding the front edge of the liquid crystal display module and the back cover covering the cover bottom are respectively combined at the front and rear sides to form a liquid crystal display device.

On the other hand, in order to set the liquid crystal display in a direction perpendicular to the ground, for example, a fastening means such as a screw and a nut is applied to fasten it in a stand fastening or a wall-mounted state. There is a problem that the liquid crystal display device sags or shakes.

In addition, there is also a problem that the fastening means is separated from the liquid crystal display device.

An object of the present invention for solving the above problems is to provide a liquid crystal display device including a fastening means capable of increasing fastening strength.

A liquid crystal display device according to the present invention for achieving the above object includes a liquid crystal panel, a backlight unit positioned on the rear surface of the liquid crystal panel, and a plurality of embossed portions protruding from the rear surface covering the rear surface of the backlight unit. A liquid crystal display module including a cover bottom; A fastening means comprising a femur nut inserted into the embossed portion and a screw coupled to the femoral nut; In order to fix the liquid crystal display module in a direction perpendicular to the ground, it includes a fixing support that is coupled to the rear surface of the cover butt through the fastening means, and the embossing part protrudes in a vertical direction from the rear surface of the cover buttum. It is characterized in that it comprises an inclined surface whose cross section becomes narrower toward the end, a horizontal surface extending from an upper end of the inclined surface in an inward horizontal direction, and a through hole provided at the center of the horizontal surface into which the pem nut is inserted.

In this case, the pem nut includes a body portion, a support portion formed at a lower portion of the body portion, and a circumferential groove formed between the body portion and the support portion, and formed in an inward direction from an outer peripheral surface of the body portion.

The end of the horizontal surface is in a hemmed state, and is compressed by a compression tool to be introduced into the circumferential groove.

The thickness of the end of the horizontal plane is to be twice the height of the circumferential groove.

The pem nut includes a body portion, a support portion protruding outwardly along a circumference of a lower outer circumference of the body portion, and a protruding caulking portion protruding in a vertical direction from a lower end of the body portion.

The protruding caulking portion further includes a caulking portion facing the supporting portion at an end of the protruding caulking portion, and the horizontal surface is engaged and bound by the supporting portion and the caulking portion.

According to the liquid crystal display device according to the present invention, it is possible to have a stronger bonding force by increasing the strength of fixing and fastening the femin nut onto the cover butt.

Since the liquid crystal display device is fastened to a stand or wall-mounted state through such a pem nut, the liquid crystal display device can maintain a solid bonding force over time and has the advantage of having strong durability against external shocks.

Particularly, in the case of fixing and fastening the Pam nut according to another embodiment of the present invention on the cover bottom, the thickness of the cover bottom can be reduced, thereby reducing material cost, and further reducing the overall manufacturing cost of a liquid crystal display device. There is an advantage of being able to provide a lightweight liquid crystal display device.

1 is an exploded perspective view of a liquid crystal display device according to a preferred embodiment of the present invention.
Figure 2 is a perspective view showing a pam nut according to an embodiment of the present invention.
3A and 3B are cross-sectional views for explaining a process for fixing a pm nut to a cover butt according to an embodiment of the present invention.
Figure 4 is a perspective view showing a pem nut according to another embodiment of the present invention.
5A to 5C are cross-sectional views for explaining a process for fixing a pam nut to a cover butt according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

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

As illustrated, the liquid crystal display device 100 includes a liquid crystal display module 100a and a back cover 180 that protects the liquid crystal display module 100a and finally performs a device.

Here, the liquid crystal display module 100a includes a liquid crystal panel 110, a backlight unit 120, and a support main 130 and a top cover 140 for modularizing the liquid crystal panel 110 and the backlight unit 120 , And a cover bottom 150 and a system board 160 mounted on the rear surface of the cover bottom 150.

The liquid crystal panel 110 is a part that plays a key role in image expression and is composed of first and second substrates 112 and 114 bonded to each other with a liquid crystal layer therebetween.

Here, although not shown in the drawing, pixels are defined by crossing a plurality of gate lines and data lines on the inner surface of the first substrate 112, which is usually called a lower substrate or an array substrate, under the premise of an active matrix method. A thin film transistor (TFT) is provided and is connected to a transparent pixel electrode formed in each pixel in a one-to-one correspondence.

In addition, as an example corresponding to each pixel, a color filter of red (R), green (G), and blue (B) colors and each of the inner surfaces of the second substrate 114 called the upper substrate or the color substrate A black matrix is provided to cover non-display elements such as gate lines, data lines, and thin film transistors.

Further, first and second polarizing plates 119a and 119b that selectively transmit only specific light are attached to the outer surfaces of the first and second substrates 112 and 114, respectively.

In addition, along at least one edge of the liquid crystal panel 110, a printed circuit board (not shown) is connected via a connecting member (not shown) such as a flexible circuit board or a tape carrier package (TCP). As a result, in the process of modularization, the support main 130 may be properly folded and adhered to the side of the support main 130 or the back of the cover butt 150.

Accordingly, the liquid crystal panel 110 having the above-described structure is a data driving circuit when the thin film transistor selected for each gate line is turned on by an on or off signal of the gate driving circuit transmitted through the printed circuit board (not shown). The signal voltage of is transmitted to the corresponding pixel electrode through the data line, and the arrangement direction of the liquid crystal molecules is changed by the electric field between the pixel electrode and the common electrode, indicating a difference in transmittance.

On the rear surface of the liquid crystal panel 110, a backlight unit 120 that supplies light to display a difference in transmittance as an image is provided.

Here, the backlight unit 120 may be a direct type in which a light source (not shown) is disposed under the liquid crystal panel 110 or a side type in which a light source is disposed on a side surface.

In the case of direct type, a light source (not shown) disposed along the inner surface of the cover buttom 150, a reflecting plate (not shown) positioned above the light source, and a diffuser positioned between the reflecting plate (not shown) and an optical gap It may include at least one of a plate (not shown) and an optical sheet (not shown) interposed over the diffusion plate (not shown).

Accordingly, light emitted from a light source (not shown) located under the liquid crystal panel 110 is overlapped and mixed with each other by a reflector (not shown), a diffusion plate (not shown), and an optical sheet (not shown), As a result, the liquid crystal panel 110 is incident on the liquid crystal panel 110, and the liquid crystal panel 110 displays a high-brightness image to the outside.

In the case of a side type, a light source (not shown) disposed along one edge of the support main 130 or the cover bottom 150, a light guide plate (not shown) facing at least one side of the light source (not shown), and a light guide plate ( It may include at least one of a reflective plate (not shown) positioned below the light guide plate (not shown) and an optical sheet (not shown) positioned above the light guide plate (not shown).

Accordingly, the light emitted from the light source (not shown) of the backlight unit 120 is incident into the light guide plate (not shown) through the side surface of the light guide plate (not shown), and is then refracted toward the liquid crystal panel 110 therein. , While passing through the optical sheet (not shown) together with the light reflected by the reflector (not shown), it is processed into a more uniform high-quality surface light source and supplied to the liquid crystal panel 110.

Here, as a light source (not shown), an LED assembly can be applied. Each of the LED assemblies is made by mounting a plurality of LEDs on a LED printed circuit board (PCB) by being spaced apart at a predetermined interval.

Meanwhile, the present invention is not limited thereto, and a fluorescent lamp such as a Cold Cathode Fluorescent Lamp (CCFL) or an External Electrode Fluorescent Lamp (EEFL) may be applied as a light source.

The liquid crystal panel 110 and the backlight unit 120 are modularized through the support main 130, the top cover 140, and the cover bottom 150, and the support main 130 has a rectangular frame shape and a liquid crystal panel The liquid crystal panel 110 and the backlight unit 120 are separated by being positioned between the 110 and the backlight unit 120.

The top cover 140 has a rectangular frame shape in which the cross section is bent in a shape so as to cover the top and side edges of the liquid crystal panel 110, and an image realized in the liquid crystal panel 110 by opening the front of the top cover 140 Is configured to display.

In addition, the liquid crystal panel 110 and the backlight unit 120 are seated so that the cover bottom 150, which is the basis for assembling the entire apparatus of the liquid crystal display module 100a, is bent and raised in the shape of one square plate. A predetermined space in which the backlight unit 120 can be seated may be formed therein.

A plurality of embossed portions 155 protruding outwardly from the rear surface of the cover bottom 150 are provided.

Here, the embossing portion 155 is a component for inserting the fastener nut 170, which is a fastening means.

The embossed portion 155 protrudes in a vertical direction from the rear surface of the cover butt 150 to form a hollow portion therein, and an inclined surface 155a whose cross-section becomes narrower toward the end, and an inner horizontal direction from the top of the inclined surface 155a The extended horizontal surface 155b and the center of the horizontal surface 155b may include a through hole 155c for protruding a part of the pam nut 170 to the outside.

At this time, the structure of the embossed portion 155 may be changed according to the shape of the femur nut 170 according to an embodiment of the present invention, which will be described in detail later.

The pem nut 170 is inserted into the embossed portion 155 thus formed.

With the edge of the liquid crystal panel 110 and the backlight unit 120 surrounded by the support main 130 described above, the top cover 140 surrounding the upper edge of the liquid crystal panel 110 and the back of the backlight unit 120 The cover buttoms 150 covering the are combined at the front and rear sides and integrated through the support main 130 to be modularized.

After being modularized in this way, the system board 160 is mounted on the rear surface of the cover buttum 150.

Here, the system board 160 receives a video or audio signal input from the outside, transmits it to the liquid crystal panel 110 or a speaker, and controls a display or audio output, and a plurality of LEDs included in the backlight unit 120 (129a) or an inverter that drives a fluorescent lamp, an OSD (On Screen Display) board that controls functions related to screen adjustment, a speaker that outputs an audio signal, and an adapter that supplies the entire power of the liquid crystal display device 100 And a number of parts such as various cables may be mounted. Each of the four corners of the system board 160 is provided with a screw hole 162 for fastening a fastening means for mounting to the cover bottom 150.

After the system board 160 is mounted on the rear surface of the cover bottom 150, the back cover 180 covering the system board 160 is coupled from the rear of the liquid crystal display module 100a to form the liquid crystal display device 100. ). In this case, the system board 160 may be located at the center of the four embossed portions 155 on the cover buttoum 150.

The back cover 180 includes a first fastening hole 182 through which a screw for screwing with the pm nut 170 may pass.

In addition, a fixing support 190 for erecting the liquid crystal display device in a direction perpendicular to the ground is coupled to the rear surface of the liquid crystal display device 100, that is, the back cover 180.

The fixing support 190 has a second fastening hole 192 through which a screw 199 for screw fastening with the femur nut 170 can pass.

The fixing support 190 may be a stand, and may be a component that allows the liquid crystal display device to be fixed to a wall.

Such a fixing support 190 locates the second fastening hole 192 in correspondence with the pm nut 170 inserted into the embossed part 155 and screw-fastens the liquid crystal display 100 by screwing it through a screw 199. It will be joined to the back. At this time, the screw 199 is screwed through the second fastening hole 192 of the fixing support 190 and the first fastening hole 192 and the femin nut 170 of the back cover 180.

On the other hand, the top cover 140 may be referred to as a case top or a top case, the support main 130 may be referred to as a guide panel, a main support, or a mold frame, and the cover bottom 150 may be referred to as a bottom cover.

The liquid crystal display device 100 according to the present invention having the above-described structure can be implemented in a lightweight and thin form by omitting the conventional front cover.

Hereinafter, a fastening means for coupling and fixing the fixing support to the liquid crystal display device, and a process for fixing the pm nut to the cover butt will be described with reference to the drawings. Here, in order to describe the above-described pem nut 170 according to the first and second embodiments, reference numerals are divided into 170 and 270, and accordingly, the embossed portion 155 of the cover butt 150 is also referenced. Is divided into 155 and 255.

FIG. 2 is a perspective view showing a femin nut according to an exemplary embodiment of the present invention, and FIGS. 3A and 3B are cross-sectional views illustrating a process for fixing the pem nut to a cover butt according to an exemplary embodiment of the present invention, FIG. See 1.

As shown, the pem nut 170 includes a body portion 172, a support portion 176 formed under the body portion 172, and a circumferential groove 178 formed between the body portion 172 and the support portion 176. ).

Here, the body portion 172 includes a hollow portion therein, and along the circumference of the hollow portion of the body portion 172, a female thread 175 for coupling and fastening with the male thread of the screw (199 in FIG. 1) is formed. have.

This body portion 172 may be formed in a cylindrical shape, for example, has a diameter equal to or slightly smaller than the diameter of the through hole (155c) corresponding to the through hole (155c) of the embossed portion (155). Can be formed to

The support portion 176 is formed to have a larger diameter than the body portion 172.

The support part 176 prevents the pm nut 170 inserted into the embossed part 155 of the cover butt 150 from being separated from the outside of the embossed part 155.

Between the above-described body portion 172 and the support portion 176 is provided with a circumferential groove 178 that has a predetermined depth in the inward direction from the outer peripheral surface of the body portion 172.

The circumferential groove 178 is a constituent part for improving the fastening strength as well as the supporting force during the screw fastening process after the femin nut 170 is inserted into the embossed part 155 of the cover butt 150.

In this case, the height A and the depth of the circumferential groove 178 may be designed to be the same. When formed in this way, it is possible to easily press-fit into the circumferential groove 178.

The configuration of the embossed portion of the cover buttum corresponding to the pem nut 170 according to an embodiment of the present invention having the above-described structure and a process of fixing the pm nut to the embossing portion of the cover butt will be described with reference to the drawings.

The embossed portion 155 of the cover bottom 150 protrudes in a vertical direction from the rear surface of the cover bottom 150 to form a hollow portion therein, and an inclined surface 155a whose cross section becomes narrower toward the end, and the upper end of the inclined surface 155a In the center of the horizontal plane (155b) and the horizontal plane (155b) extending in the inner horizontal direction is composed of a through hole (155c) for protruding the body portion 172 of the pam nut 170 to the outside.

At this time, the end of the horizontal surface 155b is characterized in that the hemming (hemming) treatment (HM).

That is, the horizontal surface 155b is subjected to a hemming treatment (HM) so as to overlap in two layers along the edge thereof.

At this time, the end thickness 2A of the hemmed horizontal surface 155b is designed to be twice the height A of the circumferential groove 178.

In the embossed portion 155 having the above-described structure, as shown in FIG. 3A, when the femur nut 170 is inserted and compression is applied to the horizontal surface 155b by a compression tool (not shown), the shown in FIG. 3B As shown, the horizontal surface 155b is compressed and is pressed into the circumferential groove 178.

At this time, since the edge of the horizontal surface 155b is in a hemmed state, the amount of the horizontal surface 155b pressed into the circumferential groove 178 increases, and the binding (caulking) strength of the pem nut 170 can be improved.

In this way, the fastening strength between the femin nut 170 and the cover bottom 150, that is, the emboss portion 155, is improved, so that the femin nut 170 can be prevented from being separated from the cover bottom 150 even with an external impact, There is an advantage of maintaining a more solid bond.

FIG. 4 is a perspective view showing a pem nut according to another exemplary embodiment of the present invention, and FIGS. 5A to 5C are cross-sectional views illustrating a process for fixing the pem nut to a cover butt according to another exemplary embodiment of the present invention. See 1.

The pem nut 270 includes a body portion 272, a support portion 274 formed under the body portion 272, and a protruding caulking portion 276.

Here, the body portion 272 includes a hollow portion therein, and along the circumference of the hollow portion of the body portion 272, a female thread 275 for coupling and fastening with the male thread of the screw (119 in FIG. 1) is formed. have.

This body portion 272, for example, may be formed in a cylindrical shape, corresponding to the through hole 255c of the embossed portion 255 has a diameter equal to or slightly larger than the diameter of the through hole (255c). It can be formed to have.

The support part 274 is formed to protrude outward along the periphery of the lower outer circumferential surface of the body part 272 so as to contact the horizontal surface 255b of the emboss part 255.

The support part 274 prevents the pem nut 270 inserted into the emboss part 255 from being pulled out by straddling the horizontal surface 255b.

The protruding caulking portion 276 is formed to protrude from the lower end of the body portion 272 in a vertical direction, and serves to bind the horizontal surface 255b together with the support portion 274 according to the binding process.

The configuration of the embossed portion of the cover buttum corresponding to the pem nut 270 according to another embodiment of the present invention having the above-described structure and a process of fixing the pem nut to the embossing portion of the cover butt will be described with reference to the drawings.

The embossed portion 255 of the cover bottom 250 protrudes in a vertical direction from the rear surface of the cover bottom 250 to form a hollow portion therein, and an inclined surface 255a whose cross section becomes narrower toward the end, and the upper end of the inclined surface 255a In the center of the horizontal plane (255b) and horizontal plane (255b) formed extending in the inner horizontal direction is composed of a through hole (255c) for protruding the body portion 272 of the pem nut 270 to the outside.

In the embossed portion 255 having the above-described structure, as shown in FIG. 5A, the femin nut 270 is inserted, and as shown in FIG. 5B, through the pressure P1 applied by the processing tool (not shown). After the protruding caulking portion 276a is opened toward the outside, the end (edge) of the protruding caulking portion 276b opened through the pressure (P2) applied by a pressing tool (not shown) as shown in FIG. 5C is bent. And binds (cauls) the horizontal plane (255b).

At this time, the protruding caulking portion 276 has an inclination that is inclined in an outward direction by a processing tool (not shown). This protruding caulking portion 276a further includes a configuration of a caulking portion 276b facing the support portion 274 at the end by a pressing tool (not shown).

Accordingly, since the support 274 and the caulking portion 276b face each other and contact a horizontal surface 255b positioned therebetween, a portion of the horizontal surface 225b is engaged, so the binding (caulking) strength of the femin nut 270 Can be improved.

In particular, since the fastening strength between the femin nut 270 and the cover bottom 250, that is, the embossed portion 255 is improved by the femin nut 270, the thickness of the cover bottom 250 can be reduced. There is this. This has the advantage of reducing the material cost of the cover bottom 250, allowing the cover bottom to be manufactured in a light weight, and further reducing the manufacturing cost of the entire liquid crystal display device and implementing light weight at the same time.

The embodiments of the present invention described above are merely exemplary, and those of ordinary skill in the art to which the present invention pertains may be freely modified within the scope of the gist of the present invention. Accordingly, the scope of protection of the present invention includes modifications of the present invention within the scope of the appended claims and equivalents thereto.

100: liquid crystal display device 100a: liquid crystal display module
110: liquid crystal panel 120: backlight unit
122: reflector 124: diffuser
126: a plurality of optical sheets 129: LED assembly
130: support main 140: top cover
150: cover buttom 155: emboss
160: system board 170, 270: Pam nut
180: back cover

Claims (13)

A liquid crystal display module including a liquid crystal panel, a backlight unit positioned on a rear surface of the liquid crystal panel, and a cover bottom covering the rear surface of the backlight unit;
A horizontal surface protruding from the rear surface of the cover butum and protruding in a vertical direction from the rear surface of the cover butum and narrowing in cross section toward an end thereof, and a horizontal surface extending from the upper end of the inclined surface in an inner horizontal direction, and provided in the center of the horizontal surface. At least one embossed portion having a through hole formed therein;
A pem nut inserted into the through hole of the embossed portion;
A fastening means coupled to and fastened to the pem nut;
In order to fix the liquid crystal display module in a direction perpendicular to the ground, it includes a fixing support that is coupled to the rear surface of the cover thrust through the fastening means,
The pem nut includes a body portion and a circumferential groove that is drilled at a predetermined depth in an inward direction from an outer circumferential surface of the body portion, and an end of the horizontal surface is in a hemmed state, and is compressed by a compression tool to be inserted into the circumferential groove. Liquid crystal display.
The method of claim 1,
The femoral nut further comprises a support portion formed under the body portion. delete The method of claim 1,
The liquid crystal display device, wherein the thickness of the end of the horizontal plane is twice the height of the circumferential groove.
A liquid crystal display module including a liquid crystal panel, a backlight unit positioned on a rear surface of the liquid crystal panel, and a cover bottom covering the rear surface of the backlight unit;
A horizontal surface protruding from the rear surface of the cover butum and protruding in a vertical direction from the rear surface of the cover butum and narrowing in cross section toward an end thereof, and a horizontal surface extending from the upper end of the inclined surface in an inner horizontal direction, and provided in the center of the horizontal surface. At least one embossed portion having a through hole formed therein;
A pem nut inserted into the through hole of the embossed portion;
A fastening means coupled to and fastened to the pem nut;
In order to fix the liquid crystal display module in a direction perpendicular to the ground, it includes a fixing support that is coupled to the rear surface of the cover thrust through the fastening means,
Wherein the femur nut includes a body portion, a support portion protruding outwardly along a circumference of a lower outer circumferential surface of the body portion, and a protruding caulking portion protruding from a lower end of the body portion in a vertical direction.
The method of claim 5,
A caulking portion facing the support portion is further included at an end of the protruding caulking portion,
The liquid crystal display device, wherein the horizontal plane is engaged and bound by the support part and the caulking part.
The method of claim 5,
The liquid crystal display device, wherein the protruding caulking portion is formed to have an inclination inclined in an outward direction.
A liquid crystal display module including a liquid crystal panel, a backlight unit positioned on a rear surface of the liquid crystal panel, and a cover buttoum covering the rear surface of the backlight unit and having at least one through hole;
A pem nut inserted into the through hole of the cover buttum;
A fastening means coupled to and fastened to the pem nut;
It includes a fixing support that is coupled to the rear surface of the cover bottom by the fastening means to fix the liquid crystal display module in a direction perpendicular to the ground,
The liquid crystal display device, characterized in that an insertion portion is formed along the periphery of the pam nut, and an end of the cover butt is inserted into the insertion portion.
The method according to claim 8, wherein the insertion portion of the femin nut is composed of a circumferential groove that is deep inward from an outer circumferential surface of the pem nut, and the end of the cover butt is hemmed and compressed by a compression tool to be inserted into the circumferential groove. A liquid crystal display device comprising:
delete The method of claim 8, wherein the insertion portion of the femin nut includes a supporting portion protruding outwardly along a circumference of a lower outer circumference of the pem nut, a protruding caulking portion protruding in a vertical direction from a lower end of the body portion, and an end of the protruding caulking portion. Is formed by a caulking portion facing the support portion,
The liquid crystal display device, wherein the caulking portion is bent from the protruding caulking portion by pressure to bind the end of the cover butt together with the support portion.
The method of claim 8, wherein at least a horizontal surface formed to protrude in a vertical direction from the rear surface of the cover buttom and including the through hole, and a horizontal surface extending from the upper end of the inclined surface in an inner horizontal direction, and A liquid crystal display device further comprising one embossed portion.
The liquid crystal display device of claim 12, wherein the embossing part is formed integrally with the cover buttum.

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