KR20090054853A - Liquid crystal display device having touch panel - Google Patents

Abstract

An LCD is provided to reduce assembling jig manufacturing costs by forming a structure for guiding an attachment location of a touch panel. An LCD(Liquid Crystal Display) having a touch panel comprises a display panel(100) where pixels are arranged in a matrix form, a back light assembly(140), a main supporter(150), a top case(151), a lower cover(152), and the touch panel. The back light assembly is arranged in a rear side of the display panel. The display panel and the back light assembly are laminated in the main supporter. The main supporter supports a side of the back light assembly and the display panel. In the top case, a guide unit(152a) is protruded from each corner of an upper side. The lower cover is arranged in a rear side of the back light assembly, and combined with the top case to support the display panel and back light assembly. The touch panel is adhered to an upper side of the top case, and is fixed and supported by the guide unit of the top case.

Description

Liquid Crystal Display with Touch Panel {LIQUID CRYSTAL DISPLAY DEVICE HAVING TOUCH PANEL}

The present invention relates to a liquid crystal display device, and more particularly, to form a structure for guiding the mounting position of the touch panel in the liquid crystal display module to reduce the manufacturing jig manufacturing cost and improve the workability, the mounting position of the touch panel The present invention relates to a liquid crystal display device having a touch panel which can reduce the possibility.

In general, the touch panel includes a cathode ray tube (hereinafter referred to as "CRT"), a liquid crystal display (hereinafter referred to as "LCD"), a field emission display (field emission display); The display surface of an image display device such as "FED"), a plasma display panel (hereinafter referred to as "PDP") and an electroluminescent device (hereinafter referred to as "ELD"). A computer peripheral device in which a user presses a touch panel while viewing an image display device and inputs predetermined information into a computer.

A conventional liquid crystal display device having a touch panel will be described with reference to FIGS. 1 and 2 as follows.

1 is an exploded view of a liquid crystal display device having a touch panel according to the related art.

2 is an exploded perspective view illustrating a liquid crystal display device in which a touch panel according to the related art is coupled by a double-sided adhesive tape.

A liquid crystal display device having a touch panel according to the prior art, as shown in Figures 1 and 2, the touch panel 60; A display panel 10 in which pixels are arranged in a matrix; A gate driver 20 and a data driver 30 connected to side surfaces of the display panel 10, respectively; It is composed of a backlight assembly 40 disposed on the back of the display panel 10.

The display panel 10 includes a TFT array substrate and a color filter substrate bonded together to maintain a uniform cell-gap opposite to each other, and a liquid crystal layer formed at a spaced interval between the color filter substrate and the thin film transistor array substrate.

A common electrode and a pixel electrode are formed on the liquid crystal display panel in which the TFT array substrate, the color filter substrate, and the color filter substrate are bonded together to apply an electric field to the liquid crystal layer.

In addition, in order to control the voltage of the data signal applied to the pixel electrode for each pixel, a switching element such as a thin film transistor is separately provided in the pixels.

The gate driver 20 and the data driver 30 are coupled to the display panel 10 in various forms to supply scan signals and image information to gate lines and data lines formed on the display panel 10. The pixels of the panel 10 are driven.

The backlight assembly 40 may include a light guide plate 41 disposed on a rear surface of the display panel 10; First and second lamp assemblies 42 and 43 disposed on both side surfaces of the light guide plate 41; The light guide plate 41 includes a reflective plate 44 disposed on a rear surface of the light guide plate 41, and an optical sheet 45 is disposed between the display panel 10 and the light guide plate 41.

The reflector plate 44 disposed on the rear surface of the light guide plate 41 reflects the light transmitted through the rear surface of the light guide plate 41 to the upper surface of the light guide plate 41 to reduce the loss of light and is transmitted to the upper surface of the light guide plate 41. Improves light uniformity

Accordingly, the light guide plate 41 transmits the light generated by the first and second lamp assemblies 42 and 43 together with the reflecting plate 44 to the upper surface.

In the optical sheet 45 disposed between the display panel 10 and the light guide plate 41, a diffusion sheet and a prism sheet may be applied, and a protective sheet may be added.

The display panel 10 and the backlight assembly 40 are stacked on the main support 50, and side surfaces of the stacked display panel 10 and the backlight assembly 40 are supported by the main support 50.

The top edge of the display panel 10 is compressed by the top case 51, and the top case 51 is coupled to the main support 50 by a screw.

On the other hand, the data driver 30 is provided with a printed circuit board 31, the printed circuit board 31, integrated circuit chips for generating various electrical signals for driving the pixels of the display panel 10, Since wires for transmitting the electrical signals are mounted, a constant area is required.

Accordingly, the printed circuit board 31 is disposed on the rear surface of the lower cover 52 and rides from the side of the display panel 10 to the bottom of the lower cover 52 from the side of the main support 50. The display panel 10 is connected to the flexible conductive film 32 that is bent.

The printed circuit board 31 disposed on the bottom surface of the lower cover 52 is protected by a cover shield 53 coupled to the lower cover 52 by a screw.

On the other hand, as shown in Figure 2, the touch panel 60 is bonded to the double-sided adhesive tape (not shown) in the top case 51 to protect the liquid crystal display device.

However, as described above, the liquid crystal display device provided with the touch panel according to the related art has the following problems.

According to the liquid crystal display device having a touch panel according to the prior art, since the use of the touch panel has recently increased, the touch panel is attached to the existing liquid crystal display module, and thus, the structure in which the touch panel can be fixed is known. It did not exist in the display module and did not manufacture a special part for attaching the touch panel.

In addition, when the touch panel is attached to the top case constituting the liquid crystal display module, a liquid crystal display device having a touch panel according to the prior art does not have a structure that can hold the position of the touch panel on the top case. Jig (Jig), etc. must be used to hold the panel's attachment location, so it requires a separate fabrication cost such as a separate jig and reduces workability.

In the liquid crystal display device provided with the touch panel according to the related art, there is a possibility that the attachment position of the touch panel may be changed during or after the touch panel is attached to the top case using a double-sided adhesive tape or the like.

Accordingly, the present invention has been made to solve the above problems according to the prior art, an object of the present invention is to form a structure for guiding the mounting position of the touch panel on the liquid crystal display module to reduce the manufacturing jig manufacturing cost and improve workability In addition, to provide a liquid crystal display device having a touch panel that can reduce the possibility of the mounting position of the touch panel is misaligned.

According to an aspect of the present invention, there is provided a liquid crystal display including a touch panel, the display panel including pixels arranged in a matrix; A backlight assembly disposed on a rear surface of the display panel; A main support on which the display panel and the backlight assembly are stacked and on which side surfaces of the display panel and the backlight assembly are supported; A top case in which guide parts protrude from each corner of the upper surface; A lower cover disposed on a rear surface of the backlight assembly and coupled to the top case to support the display panel and the backlight assembly; And a touch panel attached to an upper surface of the top case and fixedly supported by the guide part of the top case.

According to an aspect of the present invention, there is provided a liquid crystal display including a touch panel, the display panel including pixels arranged in a matrix; A backlight assembly disposed on a rear surface of the display panel; A main support on which the display panel and the backlight assembly are stacked and on which side surfaces of the display panel and the backlight assembly are supported; A top case having an insertion hole formed at an edge of an upper surface thereof, surrounding the display panel and coupled to the main support; A lower cover disposed on a rear surface of the backlight assembly, coupled to the top case to support the display panel and the backlight assembly, and having a guide portion penetrating the insertion hole at an upper edge of the upper case corresponding to the insertion hole formed in the top case; And a touch panel attached to an upper surface of the top case and fixedly supported by the guide portion of the lower cover coupled to the top case.

According to an aspect of the present invention, there is provided a liquid crystal display including a touch panel, the display panel including pixels arranged in a matrix; A backlight assembly disposed on a rear surface of the display panel; A main support on which the display panel and the backlight assembly are stacked, side surfaces of the display panel and the backlight assembly are supported, and a guide part is formed at an edge thereof; A top case formed at an edge portion of an upper surface thereof, the insertion hole penetrating the guide part, surrounding the display panel, and coupled to the main support; A lower cover disposed on a rear surface of the backlight assembly and coupled to the top case to support the display panel and the backlight assembly; And a touch panel attached to an upper surface of the top case and fixedly supported by a guide part of the main support coupled to the top case.

According to the liquid crystal display device with a touch panel according to the present invention has the following advantages.

The liquid crystal display device having a touch panel according to the present invention forms a guide part for guiding the touch panel on the top case on the top case itself, the bottom cover, or the main support object, thereby facilitating the operation during the operation of attaching the touch panel. And, the position of the touch panel can be fixedly supported.

Accordingly, the liquid crystal display device having the touch panel according to the present invention forms a guide unit for guiding the touch panel on the top case on the top case itself, the bottom cover, or the main support object, thereby providing a separate jig for assembly. There is no need to manufacture additionally, and there is no need to use jig for assembly, which reduces the processing time when attaching the touch panel, thereby improving work productivity.

In addition, unlike the jig removed after assembly of the touch panel, the liquid crystal display device having the touch panel according to the present invention has a structure even after the touch panel is attached, so that the adhesion strength of the touch panel is improved, and during or after the attachment operation. The likelihood of this distortion is reduced.

Hereinafter, a liquid crystal display device having a touch panel according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3 is an exploded view illustrating a liquid crystal display device in which a touch panel is coupled according to an embodiment of the present invention.

4 is an exploded perspective view illustrating a touch panel fixed and supported by a guide part formed on a lower cover in the liquid crystal display according to the exemplary embodiment of the present invention.

5 is a view illustrating a guide part formed on each corner upper surface of the lower cover in the liquid crystal display according to the exemplary embodiment of the present invention.

According to an exemplary embodiment of the present invention, a liquid crystal display device having a touch panel includes: a touch panel 160; A display panel 100 in which pixels are arranged in a matrix; A gate driver 120 and a data driver 130 connected to side surfaces of the display panel 100, respectively; It is composed of a backlight assembly 140 disposed on the back of the display panel 100.

Although not shown in the drawing, the display panel 100 may be bonded to a TFT array substrate and a color filter substrate bonded to each other to maintain a uniform cell-gap, and spaced apart from the color filter substrate and the thin film transistor array substrate. It consists of the formed liquid crystal layer.

Although not shown in the drawing, a common electrode and a pixel electrode are formed on the display panel 100 where the TFT array substrate, the color filter substrate, and the color filter substrate are bonded to apply an electric field to the liquid crystal layer.

Therefore, when the voltage of the data signal applied to the pixel electrode is controlled while the voltage is applied to the common electrode, the liquid crystal of the liquid crystal layer rotates by dielectric anisotropy according to the electric field between the common electrode and the pixel electrode. For example, characters or images are displayed by transmitting or blocking light for each pixel.

In addition, in order to control the voltage of the data signal applied to the pixel electrode for each pixel, a switching element such as a thin film transistor is separately provided in the pixels.

The gate driver 120 and the data driver 130 are coupled to the display panel 100 in various forms to supply scan signals and image information to gate lines and data lines formed on the display panel 100. The pixels of the panel 100 are driven.

The backlight assembly 140 may include a light guide plate 141 disposed on a rear surface of the display panel 100; First and second lamp assemblies 142 and 143 disposed on both side surfaces of the light guide plate 141; The light guide plate 141 includes a reflective plate 144 disposed on a rear surface of the light guide plate 141, and an optical sheet 145 is disposed between the display panel 100 and the light guide plate 141.

The light generated by the first and second lamp assemblies 142 and 143 is incident on the side surface of the light guide plate 141 formed of a transparent material.

The reflective plate 144 disposed on the rear surface of the light guide plate 141 reflects the light transmitted through the rear surface of the light guide plate 141 to the upper surface of the light guide plate 141 to reduce the loss of light and is transmitted to the upper surface of the light guide plate 141. Improves light uniformity

Accordingly, the light guide plate 141 transmits the light generated by the first and second lamp assemblies 142 and 143 together with the reflective plate 144 to the upper surface.

In the optical sheet 145 disposed between the display panel 100 and the light guide plate 141, a diffusion sheet and a prism sheet may be applied, and a protective sheet may be added.

In addition, the diffusion sheet disperses the light incident from the light guide plate 141 to prevent the light from being partially concentrated to prevent staining of an image displayed on the display panel 100, and to prevent the light incident from the light guide plate 141. Refract the angle vertically.

The prism sheet collects light incident from the diffusion sheet to be uniformly distributed on the entire surface of the display panel 100.

In addition, the protective sheet protects the optical sheet 145 sensitive to dust and scratches, prevents the flow of the optical sheet 145 when carrying the backlight assembly 140, and diffuses the light incident from the prism sheet. It can have a function to make the light more uniformly distributed.

On the other hand, the backlight assembly 140 may be applied to the edge method provided with a lamp assembly only on one side of the light guide plate 141, or a direct method in which the lamp assembly is disposed to correspond to the entire back surface of the display panel 100 is applied. It may be.

The display panel 100 and the backlight assembly 140 are stacked on the main support 150, and side surfaces of the stacked display panel 100 and the backlight assembly 140 are supported by the main support 150.

The top edge of the display panel 100 is compressed by the top case 151, and the top case 151 is coupled to the main support 150 by screws or other fastening means.

On the other hand, the data driver 130 is provided with a printed circuit board 131, the printed circuit board 131, integrated circuit chips for generating various electrical signals for driving the pixels of the display panel 100, Since wires for transmitting the electrical signals are mounted, a constant area is required.

Accordingly, the printed circuit board 131 is disposed on the rear surface of the lower cover 152 and rides from the side surface of the display panel 100 to the bottom surface of the lower cover 152 on the side surface of the main support 150. The display panel 100 is connected to the flexible conductive film 132 that is bent.

The printed circuit board 131 disposed on the bottom surface of the lower cover 152 is protected by a cover shield 153 coupled to the lower cover 152 by a screw.

On the other hand, the cover shield 153 and the lower cover 152 may be coupled by a hook method. That is, the cover shield 153 is formed with an insertion groove (not shown), the lower cover 152 is formed with a hook (not shown) hook of the lower cover 152 in the insertion groove of the cover shield 153. The cover shield 153 and the lower cover 152 may be coupled by a method of inserting the hook shield. In this case, a hook may be formed in the cover shield 153, and an insertion groove may be formed in the lower cover 152.

On the other hand, the touch panel 160 is attached to the top case 151 to protect the liquid crystal display device together with the lower cover 152 in which the liquid crystal display device is accommodated by a double-sided adhesive tape (not shown).

Here, as shown in Figures 4 and 5, the upper surface of each corner portion of the lower cover 152 is formed so that the guide portion 152a protrudes in the vertical direction, the tower corresponding to the guide portion 152a Insertion holes 151a are formed at each corner of the case 151 so that the guide part 152a is fixed through. In this case, the guide portion 152a may be formed in a pair of corner portions corresponding to each other in a diagonal direction, and the insertion holes 151a corresponding thereto may also be formed in a pair of corner portions corresponding to each other in a diagonal direction. In addition, the guide portion 151a may be formed anywhere on the upper side of each side of the lower cover 152, and an insertion hole 151a corresponding thereto may also be formed on the upper side of each side of the top case 151.

Therefore, the guide portion 152a of the lower cover 152 is supported through the insertion hole 151a formed at each corner portion of the top case 151, so that each corner portion of the touch panel 160 is fixed. It is accurately aligned by the guide portion 152a.

As a result, the touch panel 160 is easily aligned with the upper surface of the liquid crystal display by the guide part 152a of the lower cover 152 fastened to the top case 151, and thus the touch panel is aligned. It does not need a separate jig structure to make the manufacturing cost is reduced.

Meanwhile, a liquid crystal display device having a touch panel according to another embodiment of the present invention will be described in detail with reference to FIGS. 6 to 8.

6 is an exploded view illustrating a liquid crystal display device in which a touch panel is coupled according to another embodiment of the present invention.

FIG. 7 is an exploded perspective view illustrating a touch panel fixed and supported by a guide part formed on a main support in a liquid crystal display according to another exemplary embodiment of the present invention.

8 is a view illustrating a guide part formed by cutting a portion of a side surface of a main support in a liquid crystal display according to another exemplary embodiment of the present invention.

According to another exemplary embodiment of the present invention, a liquid crystal display device having a touch panel includes a touch panel 260 as shown in FIG. 6; A display panel 200 in which pixels are arranged in a matrix form; A gate driver 220 and a data driver 130 connected to side surfaces of the display panel 200, respectively; It is composed of a backlight assembly 240 disposed on the back of the display panel 200.

Although not shown in the drawing, the display panel 200 includes a TFT array substrate and a color filter substrate bonded together so as to maintain a uniform cell-gap facing each other, and a spaced gap between the color filter substrate and the thin film transistor array substrate. It consists of a liquid crystal layer formed in.

Although not shown in the drawing, a common electrode and a pixel electrode are formed on the display panel 200 where the TFT array substrate, the color filter substrate, and the color filter substrate are bonded to apply an electric field to the liquid crystal layer.

Therefore, when the voltage of the data signal applied to the pixel electrode is controlled while the voltage is applied to the common electrode, the liquid crystal of the liquid crystal layer rotates by dielectric anisotropy according to the electric field between the common electrode and the pixel electrode. For example, characters or images are displayed by transmitting or blocking light for each pixel.

In addition, in order to control the voltage of the data signal applied to the pixel electrode for each pixel, a switching element such as a thin film transistor is separately provided in the pixels.

The gate driver 220 and the data driver 230 are coupled to the display panel 200 in various forms to supply scan signals and image information to gate lines and data lines formed on the display panel 200. The pixels of the panel 200 are driven.

The backlight assembly 240 may include a light guide plate 241 disposed on a rear surface of the display panel 200; First and second lamp assemblies 242 and 243 disposed at both sides of the light guide plate 241; The reflective sheet 244 is disposed on the rear surface of the light guide plate 241, and an optical sheet 245 is disposed between the display panel 200 and the light guide plate 241.

The light generated by the first and second lamp assemblies 242 and 243 is incident on the side surface of the light guide plate 241 formed of a transparent material.

The reflective plate 244 disposed on the rear surface of the light guide plate 241 reflects the light transmitted to the rear surface of the light guide plate 241 to the top surface of the light guide plate 241 to reduce the loss of light and is transmitted to the top surface of the light guide plate 241. Improves light uniformity

Accordingly, the light guide plate 241 transmits the light generated by the first and second lamp assemblies 242 and 243 together with the reflective plate 244 to the upper surface.

In the optical sheet 245 disposed between the display panel 200 and the light guide plate 241, a diffusion sheet and a prism sheet may be applied, and a protective sheet may be added.

In addition, the diffusion sheet disperses the light incident from the light guide plate 241 to prevent the light from being partially concentrated to prevent staining in the image displayed on the display panel 200, and to prevent the light incident from the light guide plate 241. Refract the angle vertically.

The prism sheet collects light incident from the diffusion sheet to be uniformly distributed on the entire surface of the display panel 200.

In addition, the protective sheet protects the optical sheet 245 sensitive to dust and scratches, prevents the flow of the optical sheet 245 when carrying the backlight assembly 240, and diffuses the light incident from the prism sheet. It can have a function to make the light more uniformly distributed.

On the other hand, the backlight assembly 240 may be applied to the edge method provided with a lamp assembly only on one side of the light guide plate 241, or a direct method in which the lamp assembly is disposed to correspond to the entire back surface of the display panel 200 is applied. Can be.

The display panel 200 and the backlight assembly 240 are stacked on the main support 250, and side surfaces of the stacked display panel 200 and the backlight assembly 240 are supported by the main support 250.

The top edge of the display panel 200 is compressed by the top case 251, and the top case 251 is coupled to the main support 250 by screws or other fastening means.

On the other hand, the data driver 230 is provided with a printed circuit board 231, the printed circuit board 231 is integrated circuit chips for generating various electrical signals for driving the pixels of the display panel 200, Since wires for transmitting the electrical signals are mounted, a constant area is required.

Accordingly, the printed circuit board 231 is disposed on the rear surface of the lower cover 252, and rides from the side surface of the display panel 200 to the bottom surface of the lower cover 252 from the side surface of the main support 250. The display panel 200 is connected to the flexible conductive film 232 that is bent.

The printed circuit board 231 disposed on the bottom surface of the lower cover 252 is protected by a cover shield 253 coupled to the lower cover 252 by a screw.

On the other hand, the cover shield 253 and the lower cover 252 may be coupled by a hook method. That is, an insertion groove (not shown) is formed in the cover shield 253 and a hook (not shown) is formed in the lower cover 252 so that the hook of the lower cover 252 is inserted into the insertion groove of the cover shield 253. The cover shield 253 and the lower cover 252 may be coupled by a method of inserting the hook shield. In this case, a hook may be formed in the cover shield 253 and an insertion groove may be formed in the lower cover 252.

On the other hand, the touch panel 260 is attached to the top case 251 to protect the liquid crystal display device together with the lower cover 252, the liquid crystal display device is accommodated by a double-sided adhesive tape (not shown).

Here, as shown in Figures 7 and 8, the upper surface of each corner portion of the main support 250 is formed with a guide portion 250a protruding in the vertical direction by cutting the side portion, the guide portion 250a and In each corner of the corresponding top case 251, an insertion hole 151a is formed so that the guide part 150a penetrates and is supported.

At this time, the guide portion 250a may be formed at a pair of corner portions corresponding to each other in a diagonal direction, and the insertion holes 251a corresponding thereto may also be formed at a pair of corner portions corresponding to each other in a diagonal direction. In addition, the guide portion 250a may be formed at an upper portion of each side of the main support 250, and an insertion hole 251a corresponding thereto may also be formed at an upper portion of each side of the top case 251.

Therefore, since the guide part 250a of the main support 250 is supported through the insertion hole 251a formed at each corner of the top case 251, each corner of the touch panel 260 is supported. It is accurately aligned by the guide portion 250a.

As a result, the touch panel 260 is easily aligned with the upper surface of the liquid crystal display by the guide part 250a of the main support 250 fastened to the top case 251, thereby aligning the touch panel. It does not need a separate jig structure to make the manufacturing cost is reduced.

Meanwhile, as another embodiment of the present invention, a guide part may be formed in a guide panel (not shown) instead of the main support, and the guide part may be configured to penetrate and support the touch panel through the insertion hole formed in the top case.

On the other hand, as another embodiment of the present invention, the guide portion for fixing the touch panel may be formed on the top case itself without fixing the main support, the lower cover or the guide panel may be fixed to support the touch panel.

Although the preferred embodiments of the present invention have been described in detail above, those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom.

Accordingly, the scope of the present invention is not limited thereto, but various modifications and improvements of those skilled in the art using the basic concept of the present invention as defined in the following claims are also within the scope of the present invention.

1 is an exploded view of a liquid crystal display device having a touch panel according to the related art.

2 is an exploded perspective view illustrating a liquid crystal display device in which a touch panel according to the related art is coupled by a double-sided adhesive tape.

3 is an exploded view illustrating a liquid crystal display device in which a touch panel is coupled according to an embodiment of the present invention.

4 is an exploded perspective view illustrating a touch panel fixed and supported by a guide part formed on a lower cover in the liquid crystal display according to the exemplary embodiment of the present invention.

5 is a view illustrating a guide part formed on each corner upper surface of the lower cover in the liquid crystal display according to the exemplary embodiment of the present invention.

6 is an exploded view illustrating a liquid crystal display device in which a touch panel is coupled according to another embodiment of the present invention.

FIG. 7 is an exploded perspective view illustrating a touch panel fixed and supported by a guide part formed on a main support in a liquid crystal display according to another exemplary embodiment of the present invention.

8 is a view illustrating a guide part formed by cutting a portion of a side surface of a main support in a liquid crystal display according to another exemplary embodiment of the present invention.

*** Explanation of symbols for the main parts of the drawing ***

100: display panel 120: gate driver

130: data driver 131: printed circuit board

132: conductive film 140: backlight assembly

141: light guide plate 142, 143: first and second lamp assembly

144: reflector 145: optical sheet

150: main support 151: top case

151a: insertion hole 152: lower cover

152a: guide portion 153: cover shield

Claims (11)

A display panel in which pixels are arranged in a matrix; A backlight assembly disposed on a rear surface of the display panel; A main support on which the display panel and the backlight assembly are stacked and on which side surfaces of the display panel and the backlight assembly are supported; A top case in which guide parts protrude from each corner of the upper surface; A lower cover disposed on a rear surface of the backlight assembly and coupled to the top case to support the display panel and the backlight assembly; And And a touch panel attached to an upper surface of the top case and fixed to the top case by a guide part of the top case. The liquid crystal display device of claim 1, wherein the guide part is formed at each corner of the top case. The liquid crystal display device of claim 1, wherein an insertion hole is formed under the guide part of the top case. The liquid crystal display device of claim 3, wherein the guide parts are formed at each corner of the lower cover, penetrate through the insertion holes of the top case, and protrude from the top case. The liquid crystal display device of claim 3, wherein the guide part is formed at each corner of the main support and penetrates through the insertion hole of the top case to protrude from the top case. A display panel in which pixels are arranged in a matrix; A backlight assembly disposed on a rear surface of the display panel; A main support on which the display panel and the backlight assembly are stacked and on which side surfaces of the display panel and the backlight assembly are supported; A top case formed at an edge portion of an upper surface thereof and surrounding the display panel and coupled to the main support; A lower cover disposed on a rear surface of the backlight assembly, coupled to the top case to support the display panel and the backlight assembly, and having a guide portion penetrating the insertion hole at an upper edge of the upper case corresponding to the insertion hole formed in the top case; And And a touch panel attached to an upper surface of the top case and fixedly supported by the guide part of the lower cover coupled to the top case. The liquid crystal display of claim 6, wherein the guide portion is formed on each corner portion of the lower cover, a pair of corner portions corresponding to the diagonal direction, or on each side surface. The liquid crystal display device of claim 6, wherein the insertion hole penetrating the guide portion is formed on each corner portion of the top case, a pair of corner portions corresponding to the diagonal direction, or on each side surface. A display panel in which pixels are arranged in a matrix; A backlight assembly disposed on a rear surface of the display panel; A main support on which the display panel and the backlight assembly are stacked, side surfaces of the display panel and the backlight assembly are supported, and a guide part is formed at an edge thereof; A top case formed at an edge portion of an upper surface thereof, the insertion hole penetrating the guide part, surrounding the display panel, and coupled to the main support; A lower cover disposed on a rear surface of the backlight assembly and coupled to the top case to support the display panel and the backlight assembly; And And a touch panel attached to an upper surface of the top case and fixedly supported by a guide part of the main support coupled to the top case. 10. The liquid crystal display device according to claim 9, wherein the guide portion is formed on each corner portion of the main support, a pair of corner portions or each side surface corresponding to the diagonal direction. The liquid crystal display device according to claim 10, wherein the insertion hole penetrating the guide portion is formed on each corner portion of the top case, a pair of corner portions corresponding to the diagonal direction, or on each side surface.

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