KR100839477B1 - Liquid crystal display apparatus - Google Patents

Abstract

Disclosed is a liquid crystal display device capable of increasing the convenience of an assembling process while improving assembling. The liquid crystal display device has a first electrode line drawn out from the first end of the lamp, and a second electrode line drawn out to the second end and extending longer than the first electrode line. The second electrode wire is drawn outward from the side of the first side wall of the storage container adjacent to the first end. In this case, a fixing member for fixing the second electrode line is formed on the second sidewall facing the first sidewall. The second electrode wire is firmly fixed by the fixing member, so that the second electrode wire does not flow to an impact applied from the outside. Therefore, the assembly property of a liquid crystal display device can be improved. In addition, since the assembly method of fitting into the ring is adopted, the assembling process is simple and the convenience of the assembling process can be increased.

Description

Liquid crystal display device {LIQUID CRYSTAL DISPLAY APPARATUS}

1 is an exploded perspective view showing a conventional direct type liquid crystal display.

2 is an exploded perspective view illustrating in detail a direct type liquid crystal display according to an exemplary embodiment of the present invention.

FIG. 3 is a perspective view of the direct type liquid crystal display shown in FIG. 2 taken along the line A-A '.

4 is a cross-sectional view illustrating in detail the direct type backlight assembly shown in FIG. 2.

FIG. 5 is an enlarged view illustrating an enlarged portion B shown in FIG. 4.

FIG. 6 is a cross-sectional view of the direct type liquid crystal display shown in FIG. 2 taken along the line C-C`.

7 is a cross-sectional view illustrating a direct type liquid crystal display device according to another exemplary embodiment of the present invention.

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

200: liquid crystal display panel assembly 300: direct type backlight assembly

350: lamp unit 360: diffuser plate

370: reflector 380: mold frame                 

600: direct type 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 which can increase the convenience of an assembly process while improving the assemblability.

Recently, along with the development of the technology of the information processing apparatus, the development of the technology of the display apparatus for interfacing so that a user can recognize the data processed by the information processing apparatus has been made.

As a display device, a liquid crystal display device having a light weight, a small size, and a function such as full-color and high resolution is widely used. Specifically, the liquid crystal display market value is a display device for converting a change in the optical properties of the liquid crystal cell into a visual change. Such a liquid crystal display requires light because an image is displayed by using a liquid crystal, which is a light receiving element that does not emit light by itself. Therefore, the liquid crystal display receives light from the backlight assembly attached to the rear surface of the liquid crystal display panel and displays an image.

The backlight assembly is divided into a direct type and an edge type according to the position of the light source. The edge type backlight assembly has a structure in which a lamp unit is installed on a side of a light guide plate, and is mainly applied to a relatively small liquid crystal display device such as a laptop and a desktop computer. Such an edge type backlight assembly has good light uniformity, a long service life, and is advantageous for thinning a liquid crystal display device.

On the other hand, the direct type backlight assembly is a structure mainly developed as the size of the liquid crystal display device increases in size, and one or more lamps are arranged in a row on the lower surface of the diffuser plate to irradiate light on the entire liquid crystal display panel. Such a direct type backlight assembly has advantages in that a plurality of light sources can be used as compared to an edge type backlight assembly, thereby ensuring high luminance.

1 is an exploded perspective view showing a conventional direct type liquid crystal display.

Referring to FIG. 1, the direct type liquid crystal display device 100 includes a liquid crystal display panel assembly 110 representing a screen and a direct type backlight assembly 120 providing light to the liquid crystal display panel assembly 110. .

The liquid crystal display panel assembly 110 is injected between a thin film transistor (hereinafter, referred to as TFT) substrate 111a and a color filter substrate 111b and between the TFT substrate 111a and the color filter substrate 111b. The liquid crystal display panel 111 is formed of a liquid crystal (not shown). In addition, the data printed circuit board 115, the gate printed circuit board 114, the data side tape carrier package (hereinafter referred to as TCP) 113 and the gate side TCP (112).

Meanwhile, the direct type backlight assembly 120 diffuses the lamp unit 121 generating the first light, the reflecting plate 123 for reflecting the first light generated from the lamp unit 121, and the first light. And a diffuser plate 122 for emitting the second light having a uniform luminance distribution, and a mold frame 125 for accommodating the lamp unit 121, the reflector plate 123, and the diffuser plate 122.

The mold frame 125 is formed in a box shape of a rectangular parallelepiped with an upper surface opened. An accommodation space having a predetermined depth is formed in the mold frame 125, and the reflecting plate 123 is disposed along the inner surface of the accommodating space, and the lamp unit 121 is disposed on the reflecting plate 123. Installed side by side. In addition, the diffusion plate 122 is seated on the mold frame 125 spaced apart from the lamp unit 121 at a predetermined interval.

The lamp unit 121 may include at least one lamp 121a, a lamp holder 121b provided at opposite ends of the at least one lamp 121a, and a first electrode line 121c drawn from a first end of the both ends. ) And a second electrode line 121d drawn from the second end facing the first end. Here, the first electrode line 121c applies a first power supply voltage to the at least one lamp 121, and the second electrode line 121d applies a second power supply voltage to the at least one lamp 121. To this end, the first and second electrode lines 121c and 121d are respectively connected to a power supply device (not shown) that generates the first and second power voltages.

In order to connect the first and second electrode lines 121c and 121d to the power supply device, an operation of extending one of the first and second electrode lines 121c and 121d to the side where the other electrode line is located is necessary. Do. In the related art, as shown in FIG. 1, the second electrode line 121d to which a relatively low power supply voltage is applied extends to the side from which the first electrode line 121c is drawn.                         

In this case, the second electrode line 121d elongated is disposed on the rear surface of the reflective plate 123 so that the direct type liquid crystal display 100 does not interfere with the screen. An accommodation space for accommodating the second electrode line 121d is provided between the reflective plate 123 and the mold frame 125.

The middle chassis 130 is disposed on the diffusion plate 122, and the liquid crystal display panel 111 is seated on the second step of the middle chassis 130. Thereafter, a top chassis 140 is provided on the liquid crystal display panel 111 to be coupled to the mold frame 125. Thus, the direct type liquid crystal display device 100 is completed.

Such a structure is excellent in reducing the weight and volume of the direct type liquid crystal display device 100 by providing only one power supply device on the side where the first electrode line 121c is located. However, such a structure extends the second electrode wire 121d to the first end side of the one or more lamps 121 so that the second electrode wire 121d easily flows due to an external shock or the like and is directly below the second electrode wire 121d. The assembly quality of the type liquid crystal display device 100 is degraded.

In order to solve this problem, a double-sided tape (not shown) is conventionally used. That is, one surface of the double-sided tape is attached to the rear surface of the reflective plate 123, and the other surface is attached to the second electrode line 121d to fix the second electrode line 121d to the reflective plate 123. . However, using the double-sided tape makes the assembly process difficult due to the adhesiveness of the double-sided tape. In addition, when reworking, the adhesive force of the double-sided tape is reduced, so that the second electrode lines 121d may not be properly fixed to the reflecting plate 123.

The present invention proposed to solve the above problems is to provide a liquid crystal display device that can improve the assemblability, and can increase the convenience of the assembly process.

According to an aspect of the present invention, there is provided a liquid crystal display device comprising: a) a lamp for generating light, a first electrode line coupled to a first end of the lamp, and a first electrode line for applying a first power source to the lamp; A lamp unit having a second end coupled to a second end facing the first end and drawn out longer than the first electrode line and having a second electrode line for applying a second power source to the lamp; b) at one end of the lamp A power supply device connected to the third end of the first electrode line and the fourth end of the second electrode line, respectively, for supplying the first power source and the second power source to the first electrode line and the second electrode line, and c) for fixing the second electrode line. A first fixing member is formed, and a storage container for accommodating the lamp unit, and d) a liquid crystal display panel which receives light and controls the transmittance of the light to display an image.

The storage container has a storage space consisting of four side walls and a bottom surface, and a lamp is stored in the storage space. Here, the first fixing member is a support protruding from the second side wall of the storage container adjacent to the second end of the lamp toward the first side wall facing the second side wall, and bent in a direction perpendicular to the end of the first support. And a first fixing part for fixing the second electrode line extending toward the first end of the lamp.
The first sidewall of the storage container may further include a second fixing member including a second support protruding toward the second sidewall and a second fixing part bent from the second support toward the bottom.

According to the liquid crystal display device described above, a fixing member for fixing the second electrode line, which is drawn out from the second end of the lamp and extends to the first end, is formed on one side wall of the storage container for storing the lamp. Therefore, the second electrode wire is fixed by the fixing member, so that it can be prevented from flowing by an impact from the outside. In addition, since the assembling method of fitting the second electrode wire into the first fixing member is adopted, the assembling process can be simplified and the assemblability can be increased.

Hereinafter, with reference to the accompanying drawings, it will be described in detail a preferred embodiment of the present invention.

2 is an exploded perspective view illustrating in detail a direct type liquid crystal display according to an exemplary embodiment of the present invention. 3 is a perspective view illustrating in detail the direct type backlight assembly illustrated in FIG. 2, and FIG. 4 is a cross-sectional view of the direct type liquid crystal display illustrated in FIG. 2 taken along a cutting line A-A ′.

Referring to FIG. 2, the direct type liquid crystal display device 600 includes a liquid crystal display panel assembly 200 representing a screen and a direct type backlight assembly 300 that provides light to the liquid crystal display panel assembly 200. .

The liquid crystal display panel assembly 200 is a liquid crystal display including a TFT substrate 211 and a color filter substrate 213 and a liquid crystal (not shown) injected between the TFT substrate 211 and the color filter substrate 213. Has a panel 210. In addition, the data printed circuit board 220, the gate printed circuit board 230, the data side TCP 240 and the gate side TCP (250).

Meanwhile, the direct type backlight assembly 300 diffuses the lamp unit 350 generating the first light, the reflecting plate 370 for reflecting the first light generated from the lamp unit 350, and the first light. And a diffusion plate 360 for emitting the second light having a uniform luminance distribution, and a mold frame 380 for accommodating the lamp unit 350, the reflection plate 370, and the diffusion plate 360.

The mold frame 380 has an accommodating space including first to fourth sidewalls 381, 382, 383, and 384 and a bottom surface 385, and the reflecting plate 370 is disposed along the inner surface of the accommodating space. do. The lamp unit 350 is installed in parallel with each other on the reflective plate 370, and the diffusion plate 360 is seated by being spaced apart from the lamp unit 350 at a predetermined interval.

The lamp unit 350 may include one or more lamps 310, 320, 330, 340, and opposite ends 311, 312, 321, 322, 331, 332, of the one or more lamps 310, 320, 330, 340. Lamp holders 317, 327, 337, and 347 provided at 341 and 342, respectively, and first ends 311, 321, 331, and 341 of both ends 311, 312, 321, 322, 331, 332, 341, and 342. A second electrode drawn from the first electrode wires 313, 323, 333, and 343 drawn from the second electrode and a second end 312, 322, 332, and 342 facing the first ends 311, 321, 331, and 341. Electrode lines 315, 325, 335, and 345.

The first electrode lines 313, 323, 333, and 343 apply first power voltages to the first to fourth lamps 310, 320, 330, and 340, respectively, and the second electrode lines 315, 325. , 335, and 345 apply a second power supply voltage to the first to fourth lamps 310, 320, 330, and 340.

As shown in FIG. 3, the first and second electrode wires 313, 323, 333, 343, 315, 325, 335, and 345 are connected to a power supply device 390 that generates first and second power voltages. Each is connected. In order to connect the first and second electrode wires 313, 323, 333, 343, 315, 325, 335, and 345 to the power supply 390, the first and second electrode wires 313, 323, and 333 , 343, 315, 325, 335, 345 is required to extend the work to the side where the remaining electrode line is located. Accordingly, the second electrode lines 315, 325, 335, and 345 to which a relatively low power supply voltage is applied extend to the side from which the first electrode lines 313, 323, 333, and 343 are drawn.

In this case, a plurality of first fixing members 386, 387, 388, and 389 are formed on one side wall of the mold frame 380. Here, the one side wall is a second side wall 382 adjacent the second ends 312, 322, 332, 342 of the one or more lamps 310, 320, 330, 340. The first fixing members 386, 387, 388, and 389 will be described in detail with reference to the accompanying drawings.

As illustrated in FIG. 4, the elongated second electrode lines 315, 325, 335, and 345 may be disposed on the rear surface of the reflective plate 370 so that the direct type liquid crystal display 600 does not interfere with the screen. Is placed. An electrode line accommodating space 371, 372 is provided between the reflecting plate 370 and the mold frame 380 to accommodate the second electrode lines 315, 325, 335, and 345.

In detail, the one or more lamps 310, 320, 330, and 340 are disposed on the reflective plate 370 at predetermined intervals, and the electrode line receiving spaces 371 and 372 are the one or more lamps 310 and 320. , 330 and 340 are formed in spaces spaced from each other. In this case, the reflective plate 370 corresponding to the separation space protrudes in a mountain shape. Therefore, the electrode wire receiving spaces 371 and 372 are formed between the rear surface of the reflecting plate 370 and the bottom surface of the mold frame 380.

Referring back to FIG. 3, the one or more lamps 310, 320, 330, and 340 are divided into first and second groups each including two lamps. Of the first fixing members 386, 387, 388 and 389, the two first fixing members 386 and 387 correspond to the space between the first and second lamps 310 and 320 belonging to the first group. The second sidewall 382 of the mold frame 380 is formed. In addition, the remaining two first fixing members 388 and 389 among the first fixing members 386, 387, 388 and 389 are spaces between the third and fourth lamps 330 and 340 belonging to the second group. Corresponding to the second sidewall 382 of the mold frame 380 is formed.

The second fixing wires 315 and 325 drawn out from the first and second lamps 310 and 320, respectively, are formed in the space between the first and second lamps 310 and 320. After the 386 and 387 are bent, they are bent and accommodated in the first storage space 371 of the reflective plate 370. In addition, the second electrode wires 335 and 345 drawn from the third and fourth lamps 330 and 340 are formed in the space between the third and fourth lamps 330 and 340, respectively. 388 and 389, and then bent to be accommodated in the second storage space 372 of the reflective plate 370.

 The second electrode wires 315 and 325 drawn out from the first and second lamps 310 and 320 are combined in a bundle by the first coupling member 319, and the third and fourth lamps 330. The second electrode wires 335 and 345 drawn out from the first and second ends 340 are bundled together by the second coupling member 339. Meanwhile, the first electrode wires 313 and 323 drawn out from the first and second lamps 310 and 320 are combined in a bundle by a third coupling member 329, and the third and fourth lamps are coupled to each other. The first electrode wires 333 and 343 drawn from the 330 and 340 are bundled together by the fourth coupling member 349.

One end of the second electrode wires 315 and 325 drawn out from the first and second lamps 310 and 320 is connected to a first male connector 318, and the first male connector 318 is supplied with the power supply. And a first female connector 391 provided in the device 390. One end of the second electrode wires 335 and 345 drawn out from the third and fourth lamps 330 and 340 is connected to a second male connector 338, and the first male connector 338 is supplied with the power. And a second female connector 392 provided with the device 390. The third and fourth male connectors 328 and 348 having the same structure are coupled to the third and fourth female connectors 393 and 394 of the power supply 390, respectively.

2 and 4 again, The middle chassis 400 is disposed on the diffusion plate 360. The middle chassis 400 fixes the diffusion plate 360 to the mold frame 380. That is, the middle chassis 400 is formed to have a rectangular band shape with a stepped protrusion protruding from the inner wall. Therefore, the bottom surface of the step is in contact with the diffusion plate 360 to press the diffusion plate 360 toward the mold frame 380.

On the other hand, the liquid crystal display panel 210 is mounted on the upper surface of the step of the middle chassis 400, and the data and gate printed circuit boards 220 and 230 for controlling the driving of the liquid crystal display panel 210 are It is bent to the outer side of the mold frame 380 is fixed to the back.

A top chassis having a cramped shape in which an upper and a lower surface of the liquid crystal display panel 210 is coupled to the mold frame 350 to fix the liquid crystal display panel 210 to the mold frame 350. 500) is provided. As a result, the direct type liquid crystal display device 600 is completed.

5 is an enlarged view illustrating an enlarged portion B of FIG. 3, and FIG. 6 is a cross-sectional view of the direct type liquid crystal display illustrated in FIG. 2 taken along line C-C`.

5 and 6, first fixing members 386 and 387 are formed on one side wall of the mold frame 380. Here, the one side wall is a second side wall 382 adjacent to the second ends 312 and 322 of the first and second lamps 310 and 320.

In detail, each of the first fixing members 386 and 387 formed on the second side wall 382 may protrude toward the first side wall 381 facing the second side wall 382. And 387a extending in a direction perpendicular to the ends of the first supports 386a and 387a and drawn out from the second ends 312 and 322 of the first and second lamps 310 and 320. And a first fixing part 386b for fixing the two electrode lines 315 and 325.

The second electrode line 315 of the first lamp 310 may include a first fixing member 386 adjacent to the second end 312 of the first lamp 310 among the first fixing members 386 and 387. After being seated on the first support 386a of (), it is bent toward the first end 311 of the first lamp 310 from the second end 312. In this case, the first fixing part 386b prevents the second electrode wire 315 from flowing in the mold frame 380. The second electrode line 315 of the first lamp 310 fixed through the first fixing member 386 is provided between the reflecting plate 370 and the bottom surface 385 of the mold frame 380. It is inserted into the space 371.

In addition, the second electrode wire 325 of the second lamp 320 is a first fixing member adjacent to the second end 322 of the second lamp 320 among the first fixing members 386 and 387. After being seated on the second support 387a of 387, it is bent from the second end 322 toward the first end 321 of the second lamp 320. In this case, the second fixing part 387b holds the second electrode wire 325 not to flow in the mold frame 380. The second electrode line 325 of the second lamp 320 fixed through the second fixing member 387 is inserted into the first accommodation space 371.

In the drawing, the first fixing parts 386b and 387b of the first fixing members 386 and 387 face the bottom surface 385 of the mold frame 380 from the first supporting members 386a and 387a, respectively. It is shown extending in a second direction opposite to the first direction. However, the first fixing parts 386b and 387b may extend in the first direction.

Although not shown in the drawing, the first fixing members 386 and 387 are bent from one ends of the first fixing portions 386b and 387b toward the second side wall 382, respectively, and the second electrode wire ( A guide part may be further provided to prevent 315 and 325 from being separated from the first fixing parts 386b and 387b.

7 is a cross-sectional view of a direct type liquid crystal display according to another exemplary embodiment of the present invention.

Referring to FIG. 7, a first fixing member 386 is formed on the second sidewall 382 of the mold frame 380, and a second fixing part is formed on the first sidewall 381 facing the second sidewall 382. A member 381a is formed. That is, the second fixing member 381a is formed from the mold frame from the ends of the second support 381b and the second support 381b protruding from the first side wall 381 toward the second side wall 382. And a second fixing portion 381c that is bent toward the bottom surface 385 of 380.

The bundle of the second electrode wires 315 and 325 of the first and second lamps 310 and 320 coupled by the first coupling member 319 passes through the second fixing member 381a. It is more securely fixed immediately before withdrawing to the outside of 380.

In detail, the second fixing member 381a holds the bundles of the second electrode lines 315 and 325 not moving toward the liquid crystal display panel 210 through the second support 381b. The bundle of the second electrode wires 315 and 325 is prevented from flowing toward the second sidewall 382 through the second fixing part 381c.

Although not illustrated, first electrode wires 313, 323, 333, and 343 drawn from the one or more lamps 310, 320, 330, and 340 may be formed on the first sidewall 381 of the mold frame 380. The third fixing member for fixing the may be further formed.

In the above embodiment, the mold frame 380 is provided as a storage container for accommodating the lamp unit 350, the reflecting plate 370, and the diffusion plate 360. A storage container made of a material can be sufficiently applied.

According to the present invention, the liquid crystal display device has a first electrode line drawn out from the first end of the lamp and a second electrode line, and has a second electrode line extending longer than the first electrode line. The second electrode wire is drawn outward from the side of the first side wall of the storage container adjacent to the first end. At this time, a fixing member for fixing the second electrode line is formed on the second side wall facing the first side wall, so that the second electrode line is firmly fixed so as not to flow by an impact from the outside.

Therefore, the assemblability of the liquid crystal display device can be increased, and since the assembling method of fitting into the ring is adopted, the assembling process is simple and the convenience of the assembling process can be increased.

Although described with reference to the embodiments above, those skilled in the art will understand that the present invention can be variously modified and changed without departing from the spirit and scope of the invention as set forth in the claims below. Could be.

Claims (6)

A lamp for generating light, a first end coupled to a first end of the lamp, a first electrode line for applying a first power source to the lamp, and a second end coupled to a second end facing the first end; A lamp unit drawn out longer than the first electrode line and having a second electrode line for applying a second power source to the lamp; A first end of the lamp and a third end of the first electrode line and a fourth end of the second electrode line respectively connected to supply the first power source and the second power source to the first electrode line and the second electrode line, respectively. Power supply; A storage container for accommodating the lamp unit, wherein a first fixing member for fixing the second electrode line is formed; And And a liquid crystal display panel which receives the light and controls the transmittance of the light to display an image. The liquid crystal display of claim 1, wherein the storage container has a storage space including four sidewalls and a bottom surface, and the lamp is accommodated in the storage space. The first support member of claim 2, wherein the first fixing member protrudes from the second sidewall of the storage container adjacent to the second end toward the first sidewall facing the second sidewall. And a first fixing part for fixing the second electrode line bent toward the first end and extending in a vertical direction from an end portion. 4. The liquid crystal display device according to claim 3, further comprising a reflector disposed between the bottom surface of the storage container and the one or more lamps to reflect the light toward the liquid crystal display panel. The liquid crystal display device according to claim 4, wherein the second electrode line is accommodated in an electrode line accommodating space formed between the reflecting plate and the bottom surface. 4. The storage device of claim 3, wherein the first sidewall of the storage container includes a second support protruding toward the second sidewall and a second fixing portion bent from the second support toward the bottom surface. And a second fixing member for fixing immediately before being drawn out of the container.

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