KR101354599B1 - Liquid Crystal Display device - Google Patents

Abstract

The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device in which a liquid crystal display module and a system case are directly connected.

A feature of the present invention is to directly fasten the liquid crystal display module and the system case by simultaneously applying a structure for vertical fastening to the edges of the upper and lower surfaces of the liquid crystal display module.

Therefore, according to the present invention, the front bezel width of the top bezel can be reduced than before, and the liquid crystal display module and the system case can be fastened by selecting an upper or lower direction according to the operator's convenience.

In addition, it is possible to reduce the parts used for the assembly of the liquid crystal display module and the system case through the present invention, it is possible to implement the weight reduction of the liquid crystal display device, improve the workability, and reduce the manufacturing cost have.

Description

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

1 is an exploded perspective view of a liquid crystal display according to the prior art.

FIG. 2 is a schematic cross-sectional view taken along the line II ′ of FIG. 1. FIG.

3 is an exploded perspective view of a liquid crystal display according to an exemplary embodiment of the present invention.

Figures 4a to 4b is a plan view schematically showing the structure of a top case according to an embodiment of the present invention.

5a to 5b are plan views schematically showing the rear surface of the cover bottom according to an embodiment of the present invention.

6 is a schematic plan view of a guide panel according to an embodiment of the present invention.

7A to 7B are cross-sectional views schematically illustrating one side of a liquid crystal display module and a system case to explain a front fastening method and a rear fastening method according to an exemplary embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

110: liquid crystal panel 121: top bezel

123: back cover 130: top case

130a: first screw fastening area 140: cover bottom

140a: second screwing area 150: guide panel

150a: screw hole 160: screw

100: liquid crystal display module 200: system case

The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device in which a liquid crystal display module and a system case are directly connected.

Recently, with the rapid development of the information society, the display field for visually expressing electrical information signals has been in the spotlight.

Therefore, in recent years, various flat panel display devices such as liquid crystal display device (LCD), plasma display panel (PDP), vacuum fluorescent display (VFD), and electro luminescent display (ELD) have been studied. It is used as a display device in.

Among these, liquid crystal displays are the most widely used, replacing the CRT (Cathode Ray Tube) for mobile image display devices due to the advantages of excellent image quality, light weight, thinness and low power consumption. In addition to the use of the present invention has been developed in various ways, such as a TV and a computer monitor for receiving and displaying broadcast signals.

The liquid crystal display is a flat panel display that displays an image using the electrical and optical characteristics of a liquid crystal having an intermediate characteristic between a liquid and a solid. Since the liquid crystal display is a non-light emitting device that does not emit light by itself, a separate light source, that is, a backlight It is provided.

The liquid crystal display module for configuring such a liquid crystal display device includes a liquid crystal panel including two substrates each having a field generating electrode and facing each other up and down and a liquid crystal layer interposed therebetween, It is divided into a driving circuit for driving the liquid crystal panel and a backlight unit for irradiating light to the liquid crystal panel.

The liquid crystal display module is assembled with a system case including a top bezel and a back cover to form a practical liquid crystal display such as a computer monitor or a TV.

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

1 is a perspective view of a liquid crystal display according to the related art, and FIG. 2 is a schematic cross-sectional view taken along the line II ′ of FIG. 1.

As shown, the liquid crystal display device 30 includes a liquid crystal panel 11, a backlight unit (not shown) provided on a rear surface of the liquid crystal panel 11 to generate light, and a liquid crystal panel 11 upward. A liquid crystal display module including a guide panel (not shown) for supporting and enclosing the backlight unit (not shown), an upper top case 13 and a lower cover bottom 15 for supporting and accommodating them. (10).

In addition, the liquid crystal display device 30 includes a system case 20 including an upper top bezel 21 and a lower back cover 23 in order to protect the liquid crystal display module 10 from an external environment and ultimately produce it. More).

Although not shown, the liquid crystal panel 11 includes an upper and lower substrates facing each other, and a liquid crystal layer interposed therebetween, each having a field generating electrode, and a gate wiring and a data wiring formed on the lower substrate, respectively. The gate printed circuit board and the data printed circuit board supplying the scan signal and the image signal are connected to each other through a flexible film, which is folded and attached to the rear surface of the liquid crystal panel 11 or the side surface of the guide panel during the modularization process.

In addition, the back of the liquid crystal panel 11 is configured with a backlight unit, the backlight unit is a cylindrical lamp for generating light, a reflecting sheet for reflecting the leaked light is formed under the lamp, the lamp It is configured on the top and includes a plurality of optical sheets for diffusing the light emitted from the lamp, to improve the viewing angle.

As a mechanical element for integrating the liquid crystal panel 11 and the backlight unit (not shown), the cover bottom 15 is coupled to the rear surface of the rectangular frame-shaped guide panel (not shown) to define the storage space of the rectangular parallelepiped. In addition, when the backlight unit (not shown) and the liquid crystal panel 11 are accommodated in this order, a rectangular frame-shaped top case 13 covering the front edge of the liquid crystal panel 11 is covered with the guide panel (not shown). And the cover bottom 15.

Therefore, the liquid crystal panel 11 is fixed and supported by the guide panel (not shown), the cover bottom 15, the top case 13, etc. together with a backlight unit (not shown) and fastened like a screw (not shown). It is modularized by means to form the liquid crystal display module 10.

Meanwhile, the liquid crystal display module 10 is assembled with the system case 20 including the top bezel 21 and the back cover 23 to implement the liquid crystal display device 30.

In this case, a bracket 17 is generally used to facilitate the assembly of the liquid crystal display module 10 and the system case 20.

The illustrated bracket 17 has a stepped structure that supports a portion of the back and side surfaces of the liquid crystal display module 10 and has a horizontal surface for coupling with the top bezel 21.

In addition, a plurality of screw holes 17a are formed in the horizontal surface of the bracket 17, and screw fastening grooves 21a are formed in the inner side of the top bezel 21 corresponding to the liquid crystal display device 30. The assembly screw 25 passes through the screw hole 17a of the bracket 17 and is fitted into the screw fastening groove 21a of the top bezel 21 to be fixed.

That is, the bracket 17 is used for ease of assembly and additionally fixes the liquid crystal display module 10 and protects the liquid crystal display module 10 from external impact.

However, the conventional liquid crystal display device 30 as described above has an upper edge except for the display area of the liquid crystal display module 10 due to the use of the bracket 17 protruding to the outside of the liquid crystal display module 10. There is a problem of widening the front bezel width of the top bezel 21 to cover, and also assembling means for modularizing the liquid crystal display module 10, the liquid crystal display module 10 and the system case 20 In order to use a separate fastening means such as the bracket (17).

That is, the use of a plurality of components as described above leads to an increase in the weight of the liquid crystal display device 30, and thus, a manufacturing cost of the liquid crystal display device 30 is increased.

The present invention is to solve the above problems, by applying a structure for vertical fastening at the edge of the upper surface and the lower surface of the liquid crystal display module at the same time to directly fasten the liquid crystal display module and the system case, the front of the top bezel The purpose is to reduce the bezel width.

In addition, it is an object of the present invention to reduce the components used for the assembly of the liquid crystal display module and the system case, thereby reducing the weight and manufacturing cost of the liquid crystal display device.

In order to achieve the above object, the present invention is a liquid crystal panel, a backlight unit provided on the back of the liquid crystal panel for providing light, and is configured on the upper portion of the liquid crystal panel, a plurality of in the outer direction along the upper surface edge A rectangular frame-shaped top case in which a first screwing area is defined, and a plurality of second screwing areas are defined at a position corresponding to the first screwing area along the bottom surface and accommodating the backlight unit. A cover bottom, and side surfaces of the liquid crystal panel and the backlight unit, and having a plurality of first screwing regions located above and a center of an area where the plurality of second screwing regions are located below. A liquid crystal display module including a guide panel having a screw hole formed therein; And a system case including a top frame having a rectangular frame shape formed on an upper portion of the liquid crystal display module and covering an outer portion except a screen display portion, and a back cover configured on the lower portion of the liquid crystal display module and accommodating the liquid crystal display module. Any one of the top bezel or the back cover constituting the top case, the guide panel and the cover bottom of the liquid crystal display module and the system case is directly fastened by a vertical fastening method using a screw, and any one of the top bezel and the back cover One component provides a liquid crystal display device characterized in that the screwing groove is provided.

delete

Here, the first screwing area is formed as an open area in which the screw hole of the guide panel is exposed, wherein the first screwing area is formed with a hole connected to correspond to the screw hole of the guide panel It is characterized by.

The second screwing region may be formed as an open region in which the screw holes of the upper guide panel are exposed, and the second screwing region is formed to have a hole connected to correspond to the screw hole of the guide panel. It is characterized by.

delete

When assembling the liquid crystal display module and the system case, the screw is coupled to the back cover by passing through the first screwing region, the screw hole, and the second screwing region. At this time, the back cover is characterized in that the screw fastening groove is formed at a position corresponding to the second screw fastening area.

The screw may be coupled to the top bezel through the second screwing region, the screw hole, and the first screwing region. At this time, the top bezel is characterized in that the screw fastening groove is formed in a position corresponding to the first screw fastening area.

The liquid crystal panel may further include an upper substrate and a lower substrate and a liquid crystal layer interposed therebetween.

The backlight unit may further include a lamp for generating light, an optical sheet configured to diffuse light, and a reflecting sheet configured below the lamp to reflect the leaked light.

In addition, the guide panel and the system case is characterized in that the mold.

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

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

As shown, the liquid crystal display device 300 is provided on the liquid crystal panel 110 and the back of the liquid crystal panel 110 to provide light and a mechanical element for integrating them. The upper case 130 is formed on the upper side, and has a rectangular frame-shaped top case 130 in which a plurality of first screwing regions 130a are defined along the upper edge thereof, and the backlight unit 170 is accommodated therein. And a cover bottom 140 in which a plurality of second screwing regions 140a are defined at positions corresponding to the first screwing regions 130a along a lower surface of the lower surface, and the liquid crystal panel 110 and the backlight unit. And a side portion of the screw 170 corresponding to a one-to-one correspondence at the center of an area in which the plurality of first screwing areas 130a are positioned and the plurality of second screwing areas 140a are located below. Hole 150a is formed It includes a liquid crystal display module 100 composed of a guide panel 150 that is.

Here, the first screw fastening region 130a and the second screw fastening region 140a of the top case 130 illustrate a structure in which holes 132 and 142 are formed as an example, but the first screw The fastening region 130a or the second screwing region 140a may also be formed as an open region through which the screw hole 150a is exposed.

That is, it is possible to select and apply various structures as desired.

Meanwhile, in order to protect the liquid crystal display module 100 from the external environment and ultimately produce the liquid crystal display device 300, the liquid crystal display device 300 is formed on the liquid crystal display module 100 and has a rectangular frame shape covering the outer portion except for the screen display unit. The system may further include a system case configured at a top bezel 121 and a lower portion of the liquid crystal display module 100, and a back cover 123 accommodating the liquid crystal display module 100.

Herein, the liquid crystal display device 300 includes a screw 160 for fastening the liquid crystal display module 100 to the system cases 121 and 123 with the first screwing region 130a of the top case 130. , And illustrates a front fastening method of fastening the screw hole 150a of the guide panel 150 and the second screw fastening area 140a of the cover bottom 140 in order to be fastened to the back cover 123. The edge of the back cover 123 is formed with a screw fastening groove 123a into which the screw 160 is inserted at a position corresponding to the second screw fastening region 140a.

On the contrary, when the screw 160 is applied to the rear fastening method which sequentially passes through the second screw fastening area 140a, the screw hole 150a, and the first screw fastening area 130a, the top bezel The screw fastening groove (not shown) is preferably formed at the lower surface of the 121.

In addition, the fastening between the top bezel 121 and the back cover 123 is coupled by a separate fastening means.

Although not shown, the liquid crystal panel 110 includes an upper and lower substrates facing each other, and a liquid crystal layer interposed therebetween, each having an electric field generating electrode, and a gate wiring and a data wiring formed on the lower substrate. The gate printed circuit board and the data printed circuit board for supplying the scan signal and the image signal, respectively, are connected to each other via a flexible film, which is the rear surface of the liquid crystal panel 110 or the side surface of the guide panel 150 during the modularization process. It is folded and attached.

In addition, a backlight unit 170 is formed on the rear surface of the liquid crystal panel 110. The backlight unit reflects a cylindrical lamp (not shown) for generating light and the light leaked under the lamp. And a plurality of optical sheets (not shown) configured to be disposed on an upper portion of the lamp to diffuse light emitted from the lamp (not shown) and to improve a viewing angle.

As described above, the liquid crystal display device 300 according to the present invention omits the fastening means as in the conventional bracket (17 of FIG. 1) and directly fastens the liquid crystal display module 100 and the system cases 121 and 123. It is a structure.

That is, the front bezel width of the top bezel 121 according to the present invention, the top bezel (Fig. 1) to cover the upper portion of the bracket (17 in Fig. 1) of the conventional structure protruding to the outside of the liquid crystal display module (Fig. 1). Compared with the front bezel width of 21), the width of the bracket (17 of FIG. 1) is reduced by the protruding width.

In addition, the weight of the liquid crystal display device 300 can be reduced, and the manufacturing cost of the liquid crystal display device 300 can be reduced.

In addition, the assembling process of the liquid crystal display device 300 may be simplified to improve workability, and by selecting a front or rear method to be assembled, it is possible to provide an operator's convenience.

Hereinafter, a direct fastening structure according to an embodiment of the present invention will be described in detail with reference to the drawings.

4A and 4B illustrate a schematic structure of a top case according to an exemplary embodiment of the present invention.

As shown, the top case 130 according to the embodiment of the present invention is one of the mechanical elements integrating the liquid crystal panel 110 (in FIG. 3) and the backlight unit (170 in FIG. 3). A rectangular frame is formed to expose the display area AE of 110 of 3 and cover the outer portion.

In addition, a plurality of first screwing regions 130a are defined in the outward direction along the upper surface edge.

The first screwing region 130a is a screw for direct coupling between a modular liquid crystal display module (100 in FIG. 3) and a system case including a top bezel (121 in FIG. 3) and a back cover (123 in FIG. 3). 3 (160 of FIG. 3) is defined as the region where the end of the screw (160 of FIG. 3) inserted first or inserted from the second screwing region (140a of FIG. 3) passes.

The first screwing region 130a may be formed as an open region 131 in which a screw hole (150a in FIG. 3) of the guide panel 150 in FIG. 3 is located. As illustrated, the guide panel 150 may also be formed as a hole 132 connected to correspond to the screw hole 150a of FIG. 3.

5A and 5B are plan views schematically illustrating the rear surface of the cover bottom according to the embodiment of the present invention.

As shown, the cover bottom 140 according to the embodiment of the present invention is coupled to the guide panel (150 in FIG. 3) to define a cube-shaped storage space with an upper surface opened, the backlight unit ( 170 in FIG. 3 is received.

In addition, a second screwing region 140a is defined at a position corresponding to the first screwing region (130a of FIG. 3) of the top case 130 of FIG.

The second screwing region 140a is a screw (160 in FIG. 3) for direct coupling between the modular liquid crystal display module (100 in FIG. 3) and the system case, similarly to the first screwing region (130a in FIG. 3). Is defined as the region through which the end of the screw (160 in FIG. 3) first inserted or inserted from the first screwing region (130a in FIG. 3) passes.

Accordingly, the second screwing region 140a may also be formed as an open region 141 in which the threaded hole 150a of FIG. 3 is exposed in the guide panel 150 of FIG. 3, and as shown in FIG. 5B. Likewise, the guide panel 150 may be formed as a hole 142 connected to the screw hole 150a of FIG. 3.

That is, the first screwing region 130a of FIG. 3 and the second screwing region 140a correspond to each other with a screw hole 150b of FIG. 3 interposed between the guide panel 150 and FIG. It consists of.

6 is a schematic plan view of a guide panel according to an embodiment of the present invention.

As shown, the guide panel 150 according to an embodiment of the present invention has a rectangular frame structure for supporting and fixing the side edges of the liquid crystal panel (110 of FIG. 3) and the backlight unit (170 of FIG. 3). Consists of.

In addition, a screw hole 150a for direct fastening with the system case in the outward direction is formed along the edge.

In this case, the screw hole 150a includes a first screwing region (130a of FIG. 3) of the top case (130 of FIG. 3) and a second screwing region (140a of FIG. 3) of the cover bottom (140 of FIG. 3). And a location corresponding to the.

That is, the first screw fastening area (130a of FIG. 3), the screw hole 150a, and the second screw fastening area (140a of FIG. 3) may form a liquid crystal display module (100 of FIG. 3) and a system case. In case of direct fastening, the screw (160 in FIG. 3) serves as a passage through which the screw passes.

7A to 7B schematically illustrate cross sections of one side of a liquid crystal display module and a system case in order to explain a front fastening method and a rear fastening method according to an exemplary embodiment of the present invention.

7A illustrates a front fastening method, wherein the screw 160 for coupling the liquid crystal display module (100 of FIG. 3) to the system case 200 includes a first screwing region 130a of the top case 130, and It passes through the screw hole 150a of the guide panel 150 and the second screwing area 140a of the cover bottom 140 in order to be coupled to the back cover 123 provided on the rear surface of the liquid crystal display module 100.

In this case, a screw fastening groove 123a is formed at a position corresponding to the second screw fastening region 140a on the upper surface of the back cover 123, and thus the screw 160 is inserted.

Here, the top bezel 121 and the back cover 123 constituting the system case 200 is preferably fastened by a separate fastening means.

7B illustrates a rear fastening method, wherein the screw 160 for coupling the liquid crystal display module 100 (see FIG. 3) to the system case 200 includes a second screwing area 140a of the cover bottom 140. And a top bezel provided on an upper surface of the liquid crystal display module 100 in FIG. 3 by sequentially passing through the screw hole 150a of the guide panel 150 and the first screwing region 130a of the top case 130. Combined with (121).

In this case, a screw fastening groove 121a is formed at a lower surface of the top bezel 121 at a position corresponding to the first screw fastening area 130a, and thus the screw 160 is inserted.

That is, the direct coupling structure of the liquid crystal display module (100 of FIG. 3) and the system case 200 according to the present invention has an advantage of providing a process convenience that can be assembled by selecting the front and rear directions according to the convenience of the operator. .

Although described above with reference to a preferred embodiment of the present invention, those skilled in the art will be variously modified and changed within the scope of the invention without departing from the spirit and scope of the invention described in the claims below I can understand that you can.

As described above, the present invention by applying a structure for vertical fastening to the edge of the upper surface and the lower surface of the liquid crystal display module at the same time to directly fasten the liquid crystal display module and the system case, thereby reducing the front bezel width of the top bezel There is an effect to, and by selecting the upper or lower direction according to the convenience of the operator has the advantage that can be fastened to the liquid crystal display module and the system case.

In addition, the present invention makes it possible to reduce the parts used for assembling the liquid crystal display module and the system case, thereby improving workability, realizing the weight reduction of the liquid crystal display device, and reducing the manufacturing cost. have.

Claims (13)

A liquid crystal panel, a backlight unit provided on the rear of the liquid crystal panel to provide light, and a rectangular frame shape formed on an upper portion of the liquid crystal panel and defining a plurality of first screwing regions defined in an outer direction along an upper surface edge thereof. A cover bottom accommodating a top case, the backlight unit, and a plurality of second screwing regions defined at a position corresponding to the first screwing region along a lower edge thereof; and side surfaces of the liquid crystal panel and the backlight unit. A liquid crystal panel including a guide panel having a screw hole corresponding to the first screw fastening region and a screw hole corresponding to the second screw fastening region at a central portion of the region where the plurality of first screwing regions are located. A display module; A system case comprising a top frame having a rectangular frame shape formed on an upper portion of the liquid crystal display module and covering an outer portion except a screen display portion, and a back cover formed on the lower portion of the liquid crystal display module and accommodating the liquid crystal display module. Includes, any one of the top bezel or the back cover constituting the top case and the guide panel and the cover bottom and the system case of the liquid crystal display module is directly fastened by a vertical fastening method using a screw, the top bezel And one of the components of the back cover is provided with a screw fastening groove. The method of claim 1, And the first screwing region is formed as an open region in which the screw hole of the guide panel is exposed. The method of claim 1, The first screw fastening region is formed, the liquid crystal display device characterized in that the hole is formed corresponding to the screw hole of the guide panel. The method of claim 1, And the second screwing area is formed as an open area in which the screw hole of the guide panel is exposed. The method of claim 1, And the second screw fastening region is provided with a hole corresponding to the screw hole of the guide panel. delete The method according to any one of claims 1 to 5, And the screw is coupled to the back cover by passing through the first screw fastening area, the screw hole, and the second screw fastening area. The method of claim 7, wherein And the screw fastening groove is formed in the back cover. The method according to any one of claims 1 to 5, And the screw is coupled to the top bezel through the second screw fastening area, the screw hole, and the first screw fastening area. The method of claim 9, And the screw fastening groove is formed in the top bezel. The method of claim 1, And the liquid crystal panel further comprises an upper substrate and a lower substrate and a liquid crystal layer interposed therebetween. The method of claim 1, The backlight unit may further include a lamp for generating light, an optical sheet configured to diffuse light above the lamp, and a reflective sheet configured below the lamp to reflect the leaked light. . The method of claim 1, The guide panel and the system case is a liquid crystal display, characterized in that the mold.

Images