KR20160038218A - Liquid crystal display device and method of fabricating integrated cover bottom - Google Patents

Abstract

The present invention relates to a liquid crystal display device, and more particularly to a liquid crystal display device which can implement downsizing and thin shaping, and to an integrated cover bottom. The present invention is characterized by forming a hollow hole portion or a compression-formed portion, i.e., rigid components, in a horizontal plane of an integrated cover bottom made of a plastic material, thereby forming the integrated cover bottom so as to have high durability and hardness even when the integrated cover bottom is made of a plastic material. Using this, a conventional back cover can be eliminated, thereby implementing a thin, light-weight liquid crystal display device, achieving simplification of a process, and reducing a processing cost. Furthermore, a rear shape of the liquid crystal display device can be simplified, thereby providing an advantage in that an available area of the liquid crystal display device increases. Furthermore, advantages in utilization of space, and interior and design aesthetics can be improved.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a liquid crystal display device,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device capable of realizing a lightweight and thin type and a method of manufacturing an integrated cover bottom.

A liquid crystal display device (LCD), which is advantageous for moving picture display and has a large contrast ratio and is actively used in TVs and monitors, exhibits optical anisotropy and polarization properties of a liquid crystal, And the like.

Such a liquid crystal display device has a liquid crystal panel in which a liquid crystal panel is interposed between two adjacent substrates through a liquid crystal layer as an essential component and changes the alignment direction of the liquid crystal molecules in an electric field in the liquid crystal panel to realize a difference in transmittance 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. To this end, a backlight having a light source is disposed on the back surface of the liquid crystal panel.

The liquid crystal panel and the backlight are modularized by the top cover, the guide panel and the cover bottom.

1 is an exploded perspective view schematically showing a general liquid crystal display device.

The liquid crystal display device 10 includes a liquid crystal display module 20 for implementing an image and a front cover 40 and a back cover 40 for accommodating the liquid crystal display module 20. [ : 30), and a pedestal 50 connected to a lower end or a back portion of the back cover 30 and fixed to a desk or a wall.

Here, the general liquid crystal display module 20 includes a liquid crystal panel 11 to which the first and second substrates 11a and 11b are attached, a light source (not shown), a reflector (not shown), a light guide plate (not shown) The backlight unit 15 including the optical sheet (not shown) is seated on the cover bottom 17 with the edges thereof being surrounded by the guide panel 13 having a rectangular shape and integrated.

In recent years, such a liquid crystal display device 10 has been widely used, such as a desktop computer monitor and a wall-mounted television, as well as a portable computer, and has a large display area, do.

However, in spite of efforts to make the liquid crystal display device 10 lighter and thinner, there are too many constituent elements of the liquid crystal display device 10, which hinders the thinness and light weight of the liquid crystal display device 10 It is true.

In addition, there is a drawback in that the material cost is high and the assembling and disassembling processes of the liquid crystal display device 10 are complicated.

In particular, in recent years, the liquid crystal display device 10 is required to be lightweight and thin, to have a wide display area, and to be as small as possible in a bezel area, which is a non-display area other than the display area.

Therefore, in recent years, studies have been actively carried out to remove a cover bottom 17 and a back cover 30 to have a lightweight, thin and narrow bezel. The cover bottom 17 is made of a metal material Since the back cover 30 is made of a plastic material, it is difficult to realize all of the functions of the two constitutions made of different materials with only one configuration.

That is, when the cover bottom 17 made of a metal material is removed, the back cover 30 made of a plastic material can not satisfy the rigidity required by the liquid crystal display device 10, and in order to satisfy the rigidity, In case of thick formation, it is difficult to realize a light weight and thin shape, which causes a problem of increasing the cost in forming a thick body.

In addition, when the back cover 30 made of a plastic material is removed and only the cover bottom 17 made of a metal material is formed, it is possible to satisfy the rigidity, but a separate middle cabinet (not shown) for supporting the light guide plate (Not shown) or a forming process for supporting the light guide plate (not shown) on the cover bottom 17 itself.

In such a case, the cost increases and the assembling and disassembling process of the liquid crystal display device 10 becomes complicated. Further, the quality of the back surface of the liquid crystal display device 10 is poor.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a liquid crystal display device with reduced weight and volume, which can reduce the process cost, and at the same time provide a liquid crystal display device having a narrow bezel as a first object do.

A second object of the present invention is to shorten the assembling time and the material cost in the process of modularization of the liquid crystal display device.

A third object of the present invention is to provide a liquid crystal display device having improved durability and rigidity and improved external appearance.

In order to achieve the above object, the present invention provides a liquid crystal display device comprising a liquid crystal panel, a backlight unit positioned below the liquid crystal panel, a guide panel guiding the liquid crystal panel and the backlight unit, And an integrated cover bottom including a horizontal plane on which the backlight unit is mounted and a vertically bent edge portion of the horizontal plane, and a rigid portion on the horizontal plane, wherein the integrated cover bottom comprises a liquid crystal display Lt; / RTI >

The rigid portion may include a hollow portion, the hollow portion may include a hollow horizontal surface spaced apart from the horizontal surface by a predetermined distance, first and second hollow vertical surfaces perpendicular to the hollow horizontal surface and connecting the hollow horizontal surface and the horizontal surface, The horizontal plane and the hollow horizontal plane and the first and second hollow vertical planes define a hollow region filled with gas, which is an inert gas containing CDA or nitrogen (N2).

The rigid portion is a compression molding portion, and the compression molding portion protrudes from the horizontal surface having a first thickness, has a second thickness that is thicker than the first thickness, and a support portion is provided along the edge of the compression molding portion.

In addition, a support portion protruding from the horizontal surface is provided at an inner side of the edge portion, the support portion is coupled to a vertical portion of the guide panel, and the edge portion is coupled to a vertical portion of the front cover.

The present invention also provides a method for producing an integrated cover bottom of a plastic material, comprising a horizontal plane and a hollow portion filled with a gas on the horizontal plane, wherein the horizontal plane comprises a vertically bent edge portion, Filling the molten resin in a mold corresponding to the molten resin, and injecting gas into the molten resin corresponding to the horizontal surface to form a hollow region, and pressing the molten resin. ≪ / RTI >

According to another aspect of the present invention, there is provided a method of manufacturing an integrated cover bottom of a plastic material, which comprises a horizontal plane and an edge portion of which the four edges of the horizontal plane are vertically bent and includes a compression molding portion on the horizontal plane, Injection molding an integrated cover bottom having a support portion having a fourth thickness and a compression-molded region having a third thickness, positioning the core in the compression-molding region, pressing the core through a hydraulic cylinder, And pressing the region into a compression-molded portion having a second thickness.

As described above, according to the present invention, by forming the hollow portion or the compression forming portion, which is a rigid portion, on the horizontal surface of the integrated cover bottom made of a plastic material, even if the integrated cover bottom is made of a plastic material, it can be formed to have high durability and rigidity There is an effect.

Accordingly, since the conventional back cover can be eliminated, it is possible to realize a thin and lightweight liquid crystal display device, simplify the process, and reduce the process cost.

Further, the back surface shape of the liquid crystal display device can be simplified, the advantage that the usable area of the back surface of the liquid crystal display device is widened, and the advantages of space utilization, interior and design can be improved .

1 is an exploded perspective view schematically showing a general liquid crystal display device.
2 is an exploded perspective view schematically showing a liquid crystal display device according to a first embodiment of the present invention.
3 is a perspective view schematically illustrating an integrated cover valve according to a first embodiment of the present invention;
4 is a cross-sectional view schematically showing a part of the modularized liquid crystal display device of FIG. 2;
5A to 5D are process flow diagrams illustrating a process of forming an integrated cover valve according to a first embodiment of the present invention, in accordance with a process flow.
6 is a cross-sectional view schematically showing a modular liquid crystal display device according to a second embodiment of the present invention.
7A to 7C are process flow diagrams showing a process of forming an integrated cover valve according to a second embodiment of the present invention in accordance with a process flow.

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

- First Embodiment -

2 is an exploded perspective view schematically showing a liquid crystal display device according to a first embodiment of the present invention.

As shown in the figure, the liquid crystal display device 100 includes a liquid crystal display module 140 for realizing images, a front cover 150 for accommodating the liquid crystal display module 140, a cover bottom 200 and a pedestal 160 connected to a lower end portion or a back portion of the integrated cover floor 200 to be fixed to a desk or a wall.

In the liquid crystal display 100 according to the first embodiment of the present invention, the liquid crystal panel 110 and the backlight unit 120 are surrounded by the guide panel 130 having a rectangular frame shape, (200).

That is, in the liquid crystal display 100 according to the first embodiment of the present invention, the integrated cover valve 200 is formed of a cover bottom (17 in FIG. 1) and a liquid crystal display module The back cover (30 in Fig. 1) storing the display device module (20 in Fig. 1) is integrally integrated.

First, the liquid crystal display module 140 includes a liquid crystal panel 110 and a backlight unit 120. The liquid crystal panel 110 plays a key role in image display, And a first substrate 112 and a second substrate 114 which are bonded to each other with a liquid crystal layer interposed therebetween.

At this time, a plurality of gate lines and data lines intersect with each other on the inner surface of the first substrate 112, which is usually referred to as an array substrate, although not shown in the drawing, on the premise that the active matrix method is employed. Pixels are defined, And a thin film transistor (TFT), which are connected in a one-to-one correspondence with the transparent pixel electrodes formed in the respective pixels.

On the inner surface of the second substrate 114 called a color filter substrate, a color filter of red (R), green (G), and blue (B) And a black matrix for covering non-display elements such as a gate line, a data line and a thin film transistor.

On the inner surface of the second substrate 114, transparent common electrodes covering the respective color filters and the black matrix are provided.

Polarizing plates 119a and 119b (see FIG. 4) for selectively transmitting only specific light are attached to the outer surfaces of the first and second substrates 112 and 114, respectively.

The printed circuit board 118 is connected to at least one edge of the liquid crystal panel 110 via a flexible circuit board or a connection member 116 such as a tape carrier package (TCP) And is properly brought into close contact with the back surface of the panel 110.

In the liquid crystal panel 110 having the above-described structure, when the thin film transistor selected for each gate line is turned on by the on / off signal of the gate driving circuit to be scanned, the signal voltage of the data driving circuit And the alignment direction of the liquid crystal molecules in the liquid crystal layer is changed by the electric field between the pixel electrode and the common electrode.

In addition, the LCD module 140 according to the present invention is provided with a backlight unit 120 for supplying light from the backside thereof so that the difference in transmittance represented by the liquid crystal panel 110 is manifested to the outside.

The backlight unit 120 includes a light guide plate 123, an LED assembly 129 arranged along the longitudinal direction of at least one edge of the light guide plate 123, a white or silver reflection plate 125, And an optical sheet 121.

The LED assembly 129 is disposed at one side of the light guide plate 123 so as to face the light incident portion of the light guide plate 123. The LED assembly 129 includes a plurality of LEDs 129a, And a PCB 129b mounted at a predetermined interval.

The plurality of LEDs 129a emit light having colors of red (R), green (G), and blue (B) toward the front of the light guide plate 123, and the plurality of RGB LEDs 129a ) Can be turned on at once to realize white light by color mixing.

In this case, in addition to the LED assembly 129, a fluorescent lamp such as a cold cathode fluorescent lamp or an external electrode fluorescent lamp may be used. If such a fluorescent lamp is used, And a lamp guide (not shown) serving to concentrate the light in the direction of the light guide plate 123.

The light guide plate 123 uniformly spreads to a wide area of the light guide plate 123 to provide a surface light source to the liquid crystal panel 110 as the light incident from the LED 129a travels through the light guide plate 123 by total reflection several times.

The light guide plate 123 may include a pattern of a specific pattern on the back surface to supply a uniform surface light source.

Here, the pattern may be formed in various shapes such as an elliptical pattern, a polygon pattern, a hologram pattern, and the like in order to guide light incident into the light guide plate 123. The pattern is formed on the lower surface of the light guide plate 126 by a printing method or an injection method.

The reflection plate 125 is disposed on the back surface of the light guide plate 123 and reflects light passing through the back surface of the light guide plate 123 toward the liquid crystal panel 110 to improve the brightness and efficiency of light.

The optical sheet 121 on the light guide plate 123 includes a diffusion sheet, at least one light condensing sheet, and the like.

Here, the diffusion sheet is positioned directly above the light guide plate 123, and serves to adjust the direction of light so that the light travels toward the light condensing sheet while dispersing the light incident through the light guide plate 123.

The light diffused through the diffusion sheet is condensed in the direction of the liquid crystal panel 110 by the condensing sheet. Therefore, the light passing through the light condensing sheet is almost perpendicular to the liquid crystal panel 110.

Meanwhile, the backlight unit 120 having the above-described structure is called a side light type, and a plurality of LEDs 129a may be arranged in a plurality of layers on the PCB 129b, and the light- It is also possible that they are arranged side by side along the longitudinal direction of both edges.

Also, a direct type in which a plurality of LED assemblies 129 are arranged in parallel under the liquid crystal panel 110 in a state in which the light guide plate 123 is omitted may be used.

The liquid crystal panel 110 and the backlight unit 120 are integrally modularized through the guide panel 130, the front cover 150 and the integrated cover bottom 200 to form the liquid crystal display 100. The front cover 150 are configured to cover the upper surface edge and the side surface of the liquid crystal panel 110.

The front cover 150 is a rectangular frame having a cross section bent in a "? &Quot; form so as to cover the upper and side edges of the liquid crystal panel 110, and has a first horizontal portion And a first vertical part 153 that vertically covers the side surface of the liquid crystal panel 110 from the first horizontal part 151 and opens the front surface of the front cover 150 to be realized in the liquid crystal panel 110 So as to display an image.

The guide panel 130 has a rectangular shape for supporting the edges of the liquid crystal panel 110 and covering the edge of the backlight unit 120. The guide panel 130 includes a second vertical part 131 and a second vertical part 131, And a second horizontal portion 133 for separating the position of the liquid crystal panel 110 and the backlight unit 120 from the vertical portion 131.

The liquid crystal panel 110 is attached and fixed on the second horizontal portion 133 through a bonding pad (not shown) such as a double-sided tape.

The guide panel 130 is mounted on the integrated cover floor 200. The integrated cover floor 200 provides a horizontal plane 201 on which the backlight unit 120 including the liquid crystal panel 110 is mounted, The edge of the horizontal surface 201 is bent vertically so that the edge portion 203 of the integrated cover bulb 200 is bent in a vertical direction It accomplishes.

The integrated cover valve 200 according to the first embodiment of the present invention has high durability and rigidity even though it is made of a plastic material, Can be implemented.

Accordingly, the integrated cover bottom 200 can be configured to accommodate the modularized liquid crystal display module 140 with the role of the existing cover bottom (17 in FIG. 1) for modulating the liquid crystal panel 110 and the backlight unit 120 And the back cover (30 in Fig. 1).

That is, the integrated cover valve 200 according to the first embodiment of the present invention is configured to cover the cover bottom (17 in FIG. 1) and the liquid crystal display module (in FIG. 1) that modularized the conventional liquid crystal display module 20), the structure of the conventional back cover (30 in Fig. 1) can be eliminated.

Accordingly, it is possible to realize the thin and light weight of the liquid crystal display device 100, simplify the process, and reduce the process cost.

In addition, since the integrated cover valve 200 is made of a plastic material, the weight of the integrated cover valve 200 is smaller than that of the conventional cover valve (17 of FIG. 1) made of a metal material, The liquid crystal display device 100 of the present invention can be provided.

In addition, since the integrated cover valve 200 is made of a plastic material, the back surface shape of the liquid crystal display device 100 can be simplified compared with the case where the cover bottom 200 is formed of a metal material, It is possible to improve the advantages of space utilization, interior and design.

Although the integrated cover bottom 200 according to the first embodiment of the present invention is made of a plastic material, it is possible to realize high durability, rigidity, light weight, and thinness in the horizontal cover 201 of the integrated cover bottom 200 This is because the rigid non-hollow portion 210 is formed. This will be described in more detail with reference to FIG.

3 is a perspective view schematically showing an integrated cover bottom according to the first embodiment of the present invention.

As shown in the drawing, the integrated cover valve 200 according to the embodiment of the present invention includes a horizontal surface 201 and a quadrangular portion 203 having a vertically bent edge of the horizontal surface 201, A plurality of the hollow portions 210 are formed.

Each of the hollow portions 210 has a hollow horizontal surface 211 formed parallel to the horizontal surface 201 at a predetermined distance from the inside of the horizontal surface 201 and a hollow horizontal surface 211 perpendicular to the hollow horizontal surface 211 and the horizontal surface 201, And first and second hollow vertical surfaces 213a and 213b connecting the horizontal surface 211 and the horizontal surface 201, respectively.

At this time, the horizontal plane 201, the hollow horizontal plane 211 and the first and second hollow vertical planes 213a and 213b define a hollow region 220 inside the hollow region 220, air: CDA) or an inert gas 230 (see Fig. 4) such as nitrogen (N2).

Although the integrated cover valve 200 according to the embodiment of the present invention is made of a plastic material including a polycarbonate resin, an acrylonitrile butadiene styrene copolymer (ABS) resin, a PMMA and the like, ), It has high durability and rigidity.

In addition, since the integrated cover valve 200 has high durability and rigidity, it is not necessary to increase the thickness of the integrated cover valve 200 made of a plastic material, so that it can be lightweight and thin.

Therefore, the liquid crystal display (100 in FIG. 2) according to the first embodiment of the present invention is a liquid crystal display device in which an existing liquid crystal display module (20 in FIG. 1) is modularized through the integrated cover bottom 200 having high durability and rigidity It is possible to realize both the cover void (17 in FIG. 1) and the back cover (30 in FIG. 1) that housed the liquid crystal display module (20 in FIG. 1).

That is, the integrated cover valve 200 has a cover bottom (17 in FIG. 1) and a back cover (20 in FIG. 1) that housed the liquid crystal display module 1). Therefore, the configuration of the conventional back cover (30 in Fig. 1) can be deleted. Accordingly, it is possible to realize a thin and lightweight liquid crystal display device (100 of FIG. 2), simplify the process, and reduce the process cost.

In addition, since the integrated cover valve 200 is made of a plastic material, the weight of the integrated cover valve 200 is smaller than that of the conventional cover valve (17 of FIG. 1) made of a metal material, (100 in Fig. 2) of the liquid crystal display device.

In addition, since the integrated cover valve 200 is made of plastic, it is possible to simplify the shape of the back surface of the liquid crystal display device 100 (FIG. 2), compared with the case where the integrated cover valve 200 is formed of a metal material. Since the hollow portion 210 is formed protruding from the inside of the horizontal surface 201, the shape of the back surface of the liquid crystal display device (100 in Fig. 2) can be further simplified.

Therefore, it has an advantage that the usable area of the rear surface of the liquid crystal display device (100 in Fig. 2) is widened, and the advantages of space utilization, interior and design can be improved.

The support portion 205 is further formed inside the edge portion 203 so as to protrude from the horizontal surface 201. The support portion 205 may be formed of a liquid crystal display And a guide panel (130 in Fig. 2) of the device module (140 in Fig. 2).

Fig. 4 is a cross-sectional view schematically showing a part of the modularized liquid crystal display device of Fig. 2. Fig.

An LED assembly 129 including a reflection plate 125, a light guide plate 123, a PCB 129b on which the LED 129a and the LED 129a are mounted, and a light guide plate 123 on the light guide plate 123, 121 are stacked to form a backlight unit (120 of FIG. 2).

A liquid crystal panel 110 in which a liquid crystal layer (not shown) is interposed between the first and second substrates 112 and 114 and the first and second substrates 112 and 114 is disposed on the backlight unit 120 On the outer surfaces of the substrates 112 and 114, polarizers 119a and 119b selectively transmitting only specific light are attached.

The backlight unit 120 and the liquid crystal panel 110 are surrounded by the guide panel 130. The integrated cover bottom 200 is coupled to the backside of the backlight unit 120 and the top edge of the liquid crystal panel 110, A side cover 150 is coupled to the guide panel 130 and the integrated cover bottom 200.

The liquid crystal panel 110 is supported by the second horizontal portion 133 protruding inward from the second vertical portion 131 of the guide panel 130.

At this time, the integrated cover valve 200 includes a horizontal surface 201 and an edge portion 203 of which the edge of the horizontal surface 201 is vertically bent, and the inside of the edge portion 203 extends from the horizontal surface 201 to the support portion 205 The second vertical portion 131 of the guide panel 130 covering the edges of the liquid crystal panel 110 and the backlight unit 120 of FIG. 2 extends from the edge portion 203 of the integrated cover bottom 200, And the inner surface of the second vertical part 131 closely contacts the outer surface of the support part 205 and is assembled and fastened to each other.

The inner surface of the first vertical portion 153 of the front cover 150 is positioned outside the second vertical portion 131 of the guide panel 130 and the edge portion 203 of the integrated cover bottom 200 Assembled and fastened.

The guide cover 130 covers the edges of the liquid crystal panel 110 and the backlight unit 120. The cover cover 200 is assembled with the cover cover 200. The cover cover 200 covers the front cover 150, So that the liquid crystal display device 100 is integrally modularized.

At this time, the integrated cover valve 200 and the guide panel 130 can be assembled and fastened more stably by assembling and fastening the integrated cover valve 200 with the guide panel 130 through the support portion 205 .

A hollow horizontal surface 211 is formed on the horizontal surface 201 of the integrated cover valve 200 so as to be spaced apart from the horizontal surface 201 by a predetermined distance and a hollow horizontal surface 211 perpendicular to the horizontal surface 201, 211 defining a hollow region 220 in which inert gas 230 is filled and first and second hollow vertical surfaces 213a and 213b connecting the first and second hollow vertical surfaces 211 and 211 and the horizontal surface 201, A backlight unit (120 of FIG. 2) is seated and supported on the outer surface of the hollow horizontal surface 211.

Accordingly, the integrated cover bottom 200 according to the first embodiment of the present invention can support the backlight unit (120 of FIG. 2) through the hollow portion 210 for improving the rigidity of the integrated cover bottom 200 , A separate middle cabinet for supporting the backlight unit (120 in Fig. 2), or a separate forming process may not be required.

As a result, it is possible to prevent an increase in cost due to the middle cabinet or the forming process, and to prevent the complicated assembly and disassembly process of the liquid crystal display device 100.

In addition, the back surface appearance of the liquid crystal display device 100 can be improved.

5A to 5D are process flow diagrams illustrating a process of forming an integrated cover valve according to the first embodiment of the present invention, according to a process flow.

Here, for convenience of description, a process of enlarging and forming a part of the integrated cover valve (200 in FIG. 4) according to the first embodiment of the present invention will be described.

As shown in the drawing, a mold including the upper core 320 and the lower core 310 is provided so that the cavity C corresponding to the shape of the integrated cover valve 200 is formed.

The upper core 320 is provided with an upper molding surface 320a having a shape corresponding to the inner surface of the integrated cover burr 200 according to the embodiment of the present invention and the lower core 310 is provided with an integrated cover burr 200 A lower molding surface 310a having a shape corresponding to the back surface is provided and the cavity C is defined by the upper molding surface 320a and the lower molding surface 320a.

A sprue bushing 321 is formed in the upper core 320 to supply the molten resin 330 from the outside to the cavity C formed by the upper core 320 and the lower core 310, A gas inlet 323 for introducing the gas 230 into the horizontal surface 201 of the integrated cover valve 200 is formed.

When the mold is constructed as described above, the molten resin 330 is injected into the cavity C through the sprue bushing 321 as shown in FIG. 5A.

The molten resin 330 injected into the cavity C is made of a plastic material including polycarbonate resin, acrylonitrile butadiene styrene copolymer (ABS) resin, PMMA, and the like, C of the molten resin 330. At this time, the molten resin 330 fills about 70 to 80% of the inside of the cavity C.

Next, as shown in FIG. 5B, the gas 230 is injected into the cavity C through the gas inlet 323 with the molten resin 330 injected into the cavity C.

The gas 230 is an inert gas such as clean dry air (CDA) or nitrogen (N2), and the gas 230 injected into the molten resin 330 forms a gas 230 inside the cavity C. [ A molten resin 330 is injected into the cavity C along the inside of the cavity C as shown in Figure 5C so as to pressurize the molten resin 330 injected into the cavity C 4) is filled with the gas 230 by the injected gas 230 in the area of the horizontal surface 201 of the integrated cover valve 200 Respectively.

5D, the upper core 320 and the lower core 310 are separated from each other, so that the integrated cover bottom (the upper core 320 and the lower core 310) filled with the gas 230 in the hollow region 220 according to the embodiment of the present invention 4 of 200).

As described above, the liquid crystal display (100 of FIG. 4) according to the first embodiment of the present invention can form a hollow portion 210 (FIG. 4) on the horizontal surface 201 of the integrated cover bottom 200, Even if the bottoms 200 are made of a plastic material, they can be formed to have high durability and rigidity.

Accordingly, it is not necessary to form a thick wall thickness of the integrated cover valve 200, and the conventional back cover (30 of FIG. 1) can be eliminated. Therefore, it is possible to realize a thin and lightweight liquid crystal display Which simplifies the process and reduces the process cost.

In addition, since the integrated cover valve 200 is made of a plastic material, the weight of the integrated cover valve 200 is smaller than that of the conventional cover valve (17 of FIG. 1) made of a metal material, (100 in Fig. 4) of the liquid crystal display device.

In addition, since the integrated cover valve 200 is made of plastic, it is possible to simplify the shape of the back surface of the liquid crystal display device (100 in FIG. 4) compared with the case in which the integrated cover valve 200 is formed of a metal material. Since the hollow portion 210 of FIG. 4 is formed protruding from the inside of the horizontal surface 201, the shape of the back surface of the liquid crystal display device 100 (FIG. 4) can be further simplified.

Therefore, it has an advantage that the usable area of the back surface of the liquid crystal display device (100 in Fig. 4) is widened, and the advantages of space utilization, interior and design can be improved.

6 is a cross-sectional view schematically showing a modular liquid crystal display device according to a second embodiment of the present invention.

Before describing the present invention, in order to avoid redundant description, the same parts as those of the first embodiment described above are designated by the same reference numerals, and only the characteristic contents described above in the second embodiment will be described .

An LED assembly 129 including a reflection plate 125, a light guide plate 123, a PCB 129b on which the LED 129a and the LED 129a are mounted, and a light guide plate 123 on the light guide plate 123, 121 are stacked to form a backlight unit (120 of FIG. 2).

A liquid crystal panel 110 in which a liquid crystal layer (not shown) is interposed between the first and second substrates 112 and 114 and the first and second substrates 112 and 114 is disposed on the backlight unit 120 On the outer surfaces of the substrates 112 and 114, polarizers 119a and 119b selectively transmitting only specific light are attached.

The backlight unit 120 and the liquid crystal panel 110 are surrounded by the guide panel 130. The integrated cover bottom 200 is coupled to the backside of the backlight unit 120 and the top edge of the liquid crystal panel 110, A side cover 150 is coupled to the guide panel 130 and the integrated cover bottom 200.

The liquid crystal panel 110 is supported by the second horizontal portion 133 protruding inward from the second vertical portion 131 of the guide panel 130.

At this time, the integrated cover valve 200 includes the horizontal portion 201 and the edge portion 203 where the edge of the horizontal surface 201 is vertically bent. A supporting portion 205 protrudes from the horizontal surface 201 inwardly of the edge portion 203. The supporting portion 205 protrudes from the horizontal surface 201 to the inside of the edge portion 203, The vertical portion 131 is located between the edge portion 203 of the integrated cover floor 200 and the support portion 205 and the inner side surface of the second vertical portion 131 is in close contact with the outer surface of the support portion 205, Assembled and fastened.

The inner surface of the first vertical portion 153 of the front cover 150 is located outside the second vertical portion 133 of the guide panel 130 and is positioned at the edge portion 203 of the integrated cover bottom 200 Assembled and fastened.

The guide cover 130 covers the edges of the liquid crystal panel 110 and the backlight unit 120. The cover cover 200 is assembled with the cover cover 200. The cover cover 200 covers the front cover 150, So that the liquid crystal display device 100 is integrally modularized.

Here, in the integrated cover bottom 200 according to the second embodiment of the present invention, a plurality of compressible portions 240, which are rigid portions, are formed on the horizontal surface 201.

Each compressible portion 240 is formed by protruding a certain thickness from the horizontal surface 201 from the inside of the horizontal surface 201. That is, when the horizontal surface 201 is formed to have the first thickness d1, the compressible shape 240 protrudes from the horizontal surface 201 by a predetermined thickness to form a second thickness d2 that is thicker than the first thickness d1 do.

Although the integrated cover valve 200 according to the embodiment of the present invention is made of a plastic material including a polycarbonate resin, an acrylonitrile butadiene styrene copolymer (ABS) resin, a PMMA and the like, ), It has high durability and rigidity.

Therefore, the liquid crystal display device 100 according to the second embodiment of the present invention can provide a cover bottom (see FIG. 1) modularized with the conventional liquid crystal display module (20 in FIG. 1) through the integrated cover bottom 200 having high durability and rigidity 1) and the back cover (30 of FIG. 1) that houses the liquid crystal display module (20 of FIG. 1).

That is, the integrated cover valve 200 has a cover bottom (17 in FIG. 1) and a back cover (20 in FIG. 1) that housed the liquid crystal display module 1). Therefore, the configuration of the conventional back cover (30 in Fig. 1) can be deleted. Accordingly, it is possible to realize the thin and light weight of the liquid crystal display device 100, simplify the process, and reduce the process cost.

In addition, since the integrated cover valve 200 is made of a plastic material, the weight of the integrated cover valve 200 is smaller than that of the conventional cover valve (17 of FIG. 1) made of a metal material, The liquid crystal display device 100 of the present invention can be provided.

In addition, since the integrated cover valve 200 is made of plastic, it is possible to simplify the shape of the back surface of the liquid crystal display device 100 compared to a case where the cover cover 200 is formed of a metal material. 210 are formed so as to protrude from the inside of the horizontal surface 201, the shape of the back surface of the liquid crystal display device 100 can be further simplified.

Accordingly, the back surface of the liquid crystal display device 100 has an advantage that a usable area is widened, and the advantages of space utilization, interior and design can be improved.

Further, a receiving portion 241 further protruding from the compressible portion 240 along the edge of the compressible portion 240 is formed.

A backlight unit (120 in Fig. 2) is seated and supported on the receiving portion 241. [

Accordingly, the integrated cover bottom 200 according to the second embodiment of the present invention further includes the support portion 241 in the compressible shape portion 240 for improving the rigidity of the integrated cover bottom 200, so that the support portion 241 (120 in FIG. 2) can be supported through the through-hole (not shown), and a separate middle cabinet for supporting the backlight unit (120 in FIG. 2) or a separate forming process can be omitted.

As a result, it is possible to prevent an increase in cost due to the middle cabinet or the forming process, and to prevent the complicated assembly and disassembly process of the liquid crystal display device 100.

In addition, the back surface appearance of the liquid crystal display device 100 can be improved.

In this case, the backing unit (120 in FIG. 2) may be configured to be supported directly on the compressible shape portion 240 by removing the receiving portion 241 and forming the compressible shape portion 240 thicker, but in such a case, 200, the weight of the liquid crystal display device 100 may be difficult to realize.

7A to 7C are process flow diagrams illustrating a process of forming an integrated cover bottom according to a second embodiment of the present invention in accordance with a process flow.

Here, for convenience of description, a process of enlarging and forming a part of the integrated cover valve (200 in FIG. 6) according to the second embodiment of the present invention will be described.

In this case, on the horizontal surface 201 having the first thickness d1, there is formed a third cover bottom 200 having the horizontal surface 201 and the edge portion 203 (see FIG. 6) A compression forming region 240a having a thickness d3 is formed and a receiving portion 241 having a fourth thickness d4 is formed along the edge of the compression forming region 240a.

Here, as shown in Fig. 7A, the core 350 is positioned corresponding to the compression-molded region 240a, and the core 350 is pressed through the hydraulic cylinder 360. [

Accordingly, the compression-molded area 240a of the horizontal surface 201 is also pressed by the core 350 pressed by the hydraulic cylinder 360 as shown in Fig. 7B, so that the compressive die portion (d2) having the second thickness d2 240 are formed.

Thereafter, as shown in FIG. 7C, the core 350 is removed to complete the integrated cover valve 200 according to the second embodiment of the present invention.

As described above, the liquid crystal display (100 of FIG. 6) according to the second embodiment of the present invention forms the compressible shape portion 240 on the horizontal surface 201 of the integrated cover floor 200, Can be formed to have high durability and rigidity even when made of a plastic material.

Accordingly, since the conventional back cover (30 of FIG. 1) can be eliminated, it is possible to realize a thin and lightweight liquid crystal display device (100 of FIG. 6), simplify the process, have.

In addition, since the integrated cover valve 200 is made of a plastic material, the weight of the integrated cover valve 200 is smaller than that of the conventional cover valve (17 of FIG. 1) made of a metal material, (100 in Fig. 6) can be provided.

In addition, since the integrated cover valve 200 is made of plastic, the back surface shape of the liquid crystal display device 100 (FIG. 6) can be simplified compared with the case where the integrated cover valve 200 is formed of a metal material. Since the compressible portion 240 is formed protruding from the inside of the horizontal surface 201, the shape of the back surface of the liquid crystal display device 100 (FIG. 6) can be further simplified.

Accordingly, the back surface of the liquid crystal display device 100 (FIG. 6) has an advantage that the usable area is widened, and the advantages of space utilization, interior and design can be improved.

By forming the receiving portion 241 along the edge of the compressible portion 240, the backlight unit (120 in Fig. 2) can be supported via the receiving portion 241, and the backlight unit (120 in Fig. 2) A separate middle cabinet for support, or a separate forming process is not required.

Accordingly, it is possible to prevent an increase in cost due to the middle cabinet or the forming process, and to prevent the complicated assembly and disassembly process of the liquid crystal display device 100 (FIG. 6).

Further, the back surface appearance of the liquid crystal display device (100 in Fig. 6) can be further improved.

The present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

100: liquid crystal display
110: liquid crystal panel (112, 114: first and second substrates, 119a, 1198b: first and second polarizing plates)
(LED) 129a: LED, 129b: PCB)
130: guide panel 131 (second vertical portion, 133: second horizontal portion)
150: front cover (151: first horizontal portion; 153: second vertical portion)
(200) according to one embodiment of the present invention includes an integrated cover valve (201), a horizontal surface (203), a rim portion (205), a support portion (210), and a hollow portion (211; hollow horizontal surfaces; 213a and 213b: first and second hollow vertical surfaces)

Claims (9)

A liquid crystal panel;
A backlight unit positioned below the liquid crystal panel;
A guide panel for guiding the liquid crystal panel and the backlight unit;
A front cover covering an upper edge of the liquid crystal panel;
A horizontal plane on which the backlight unit is seated, and an edge portion where the four edges of the horizontal plane are vertically bent,
And the integrated cover bottom is made of a plastic material.
The method according to claim 1,
Wherein the rigid portion includes a hollow portion, the hollow portion has a hollow horizontal surface spaced apart from the horizontal surface by a predetermined distance, first and second hollow vertical surfaces perpendicular to the hollow horizontal surface and connecting the hollow horizontal surface and the horizontal surface, And the hollow horizontal plane and the first and second hollow vertical planes define a hollow region filled with gas.
3. The method of claim 2,
Wherein the gas is CDA or an inert gas containing nitrogen (N2).
The method according to claim 1,
Wherein the rigid portion is a compression molded portion and the compression molded portion is protruded from the horizontal surface having a first thickness and has a second thickness that is thicker than the first thickness.
5. The method of claim 4,
And a support portion is provided along an edge of the compression forming portion.
The method according to claim 1,
And a support portion protruding from the horizontal surface is provided on an inner side of the edge portion.
The method according to claim 6,
Wherein the support portion is fastened to the vertical portion of the guide panel, and the edge portion is fastened to the vertical portion of the front cover.
1. A method for manufacturing an integrated cover bottom of a plastic material, comprising: a horizontal plane; and a hollow portion filled with a gas on the horizontal plane, the edge including a vertically bent edge of the horizontal plane,
Filling the molten resin into the horizontal surface and the inside of the mold corresponding to the edge portion;
Injecting a gas into the molten resin corresponding to the horizontal plane to form a hollow region;
Pressing the molten resin
Wherein the method comprises the steps of:
1. A method of making an integrated cover bottom of a plastic material, comprising: a horizontal plane; and a peripheral edge of the horizontal plane having a vertically curved edge portion, the compression molded portion being formed on the horizontal plane,
Injection molding an integrated cover bottom having a compression forming area having a third thickness on the horizontal surface having a first thickness and a receiving part having a fourth thickness;
Placing the core in the compression-molded region, then pressing the core through a hydraulic cylinder, and pressing the compression-molded region to a compression-molded portion having a second thickness
Wherein the method comprises the steps of:

Images