KR20070112925A - Back light assembly and liquid crystal display device having the same - Google Patents

Abstract

A backlight assembly and an LCD(Liquid Crystal Display) having the same are provided to enable ground lead lines to be electrically connected to an aligning plate with a metal material joined to a container through the conductive socket of a first lamp holder, thereby grounding the contact lead lines to the container more simply. A backlight assembly includes a container(200), plural lamps, an aligning plate(400), and plural first lamp holders(500). The lamps are held in the container in parallel to each other. In an end of the lamp, a power lead line is formed. In the other end of the lamp, ground lead lines are formed. The aligning plate is joined to the container to correspond electrically to the ground lead lines. The first lamp holders have an insulating body(510) and a conductive socket(520). The first lamp holders are aligned and fixed on the aligning plate. The conductive socket is inserted into the insulating body to connect the contact lead lines and the aligning plate electrically.

Description

BACK LIGHT ASSEMBLY AND LIQUID CRYSTAL DISPLAY DEVICE HAVING THE SAME}

1 is an exploded perspective view showing a backlight assembly according to an embodiment of the present invention.

FIG. 2 is an enlarged perspective view of a portion of the alignment plate illustrated in FIG. 1.

3 is an enlarged perspective view illustrating a part of the backlight assembly shown in FIG.

4 is an exploded perspective view illustrating the storage container and the alignment plate and the first lamp holder according to the first embodiment of FIG. 3.

FIG. 5 is a perspective view illustrating a combination of the alignment plate and the first lamp holder illustrated in FIG. 4.

6 is a perspective view illustrating the alignment plate and the conductive socket in FIG. 5.

FIG. 7 is a perspective view of a conductive socket of the alignment plate and the first lamp holder of the second embodiment shown in FIG. 3.

8 is a perspective view illustrating a combination of the alignment plate and the first lamp holder of the third embodiment illustrated in FIG. 3.

FIG. 9 is a perspective view illustrating the alignment plate and the conductive socket illustrated in FIG. 8.

FIG. 10 is a cross-sectional view taken along the line II ′ of FIG. 8.

FIG. 11 is a perspective view illustrating a combination of the alignment plate and the first lamp holder of the fourth embodiment illustrated in FIG. 3.

12 is a perspective view illustrating a combination of the alignment plate and the first lamp holder of the fifth embodiment illustrated in FIG. 3.

FIG. 13 is an exploded perspective view of the alignment plate and the first lamp holder of the sixth embodiment shown in FIG. 3.

14 is a cross-sectional view taken along line II-II ′ by combining the alignment plate and the first lamp holder illustrated in FIG. 13.

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

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

100: backlight assembly 200: storage container

300 lamp 320 ground lead wire

400: alignment plate 410: container coupling portion

420: holder fixing part 500: first lamp holder

510: insulating body 512: lamp fixing part

514: body coupling portion 520: conductive socket

522: first connecting portion 524: second connecting portion

600: power supply substrate 610: second lamp holder

620: insulating plate 630: reflective member

700: liquid crystal display panel 800: top chassis

900 diffusion plate 1000 liquid crystal display device

The present invention relates to a backlight assembly and a liquid crystal display device having the same. More particularly, the present invention relates to a backlight assembly and a liquid crystal display device having the same.

Liquid crystal displays are generally thin, light, and have advantages such as low driving voltage and low power consumption. Due to these advantages, there is a recent increase in the use as a large display device such as a TV.

The liquid crystal display device includes a liquid crystal display panel for displaying an image and a backlight assembly for supplying light to the liquid crystal display panel.

When the liquid crystal display device is used in the large display device, the backlight assembly may include a plurality of lamps in which metal lead containers are disposed in parallel to each other, and power leads are formed at one end thereof, and ground leads are formed at the other end thereof. And ground wires for grounding the ground leads to the storage container. Here, one end of the ground wire is soldered to the ground lead wire, and the other end is bolted to the storage container so that the ground lead wire is grounded to the storage container.

However, such grounding is performed by manual work such as soldering and bolting, which causes troublesome work. In addition, such manual work may act as a deterrent to recent process automation.

Accordingly, the present invention has been made in view of such a problem, and the present invention relates to a backlight assembly which can easily ground the ground lead wire of the lamp to the storage container.

The present invention also relates to a liquid crystal display device having the backlight assembly as described above.

The backlight assembly according to an aspect of the present invention described above includes a storage container, lamps, an alignment plate, and first lamp holders. The lamps are accommodated in parallel with each other in the storage container, and a plurality of lamps having power leads are formed at one end and ground leads are formed at the other end. The alignment plate is coupled to the storage container to electrically correspond to the ground leads. The first lamp holders are aligned and fixed to the alignment plate, and have an insulation body and a conductive socket inserted into the insulation body to electrically connect the ground lead wire and the alignment plate.

The alignment plate has a shape corresponding to two or more of the ground leads. Here, the alignment plate includes a container coupling portion coupled to the storage container, and a holder fixing portion into which the first lamp holder is inserted and fixed. The alignment plate is coupled to the outside of the storage container.

The conductive socket includes a first connection part connected to the ground lead wire, and a second connection part bent from the first connection part and electrically connected to the holder fixing part.

The insulating body may include a body coupling part that protects the first connection part, protects the lamp fixing part to which the lamp is fixed, and the second connection part, and is fixedly coupled to the holder fixing part.

The second connection part includes an annular coupling terminal having an open end, and the holder fixing part includes a protruding terminal that protrudes from a lower surface and is coupled to the coupling terminal. Here, the coupling terminal includes a pressing unit for pressing both sides of the protruding terminal.

Alternatively, the holder fixing part may include a protruding terminal protruding from a lower surface thereof and having a fixing hole formed at a center thereof, and the second connecting part may include a coupling terminal inserted into and fixed to the fixing hole.

In addition, the second connecting portion may include a coupling terminal having at least two protrusions protruding in a direction opposite to the holder fixing portion and pressed by the body coupling portion.

In addition, the second connection part may include a coupling terminal extending longer than the body coupling part. Here, the coupling terminal includes a crimping portion that is compressed to the holder fixing portion. Alternatively, the coupling terminal may include an extension part which is extended along the side of the holder fixing part and fixed to the side.

The second connection part may include a coupling terminal having a protrusion protruding from the holder fixing part, and the holder fixing part may include a recessed terminal recessed corresponding to the protrusion part. Here, the protrusion has a rounded shape.

On the other hand, the alignment plate is made of a metal material.

In addition, the backlight assembly further includes a plurality of second lamp holders fixing an end portion of the lamp corresponding to the power lead. The backlight assembly may further include a power supply substrate disposed in the storage container to apply a driving voltage to the power lead wire.

According to an aspect of the present invention, a liquid crystal display device includes a backlight assembly, a liquid crystal display panel, and a top chassis. The backlight assembly includes a storage container, a plurality of lamps stored in parallel to the storage container and having ground leads at one end thereof, an alignment plate coupled to the storage container so as to electrically correspond to the ground leads, and the alignment plate. And a plurality of lamp holders which are fixedly fixed to and having an insulating body and a conductive socket inserted into the insulating body to electrically connect the ground lead and the alignment plate. The liquid crystal display panel is disposed above the lamps to display an image. The top chassis is coupled to the storage container while fixing the edge of the liquid crystal display panel. In addition, the top chassis may be electrically connected to the alignment plate.

According to the backlight assembly and the liquid crystal display device having the same, the ground lead wire is connected by electrically connecting the ground lead wire and the alignment plate using the conductive sockets of the first lamp holders after coupling the metal alignment plate to the storage container. It can be easily grounded to a storage container.

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

1 is an exploded perspective view showing a backlight assembly according to an embodiment of the present invention, Figure 2 is an enlarged perspective view of a portion of the alignment plate shown in Figure 1, Figure 3 is a combination of the backlight assembly shown in Figure 1 It is an enlarged perspective view of a part.

1 to 3, a backlight assembly 100 according to an embodiment of the present invention includes a storage container 200, lamps 300, an alignment plate 400, and first lamp holders 500. do.

The storage container 200 includes a bottom plate 210 and a side portion 220 extending vertically from an edge of the bottom plate 210. A plurality of first openings 212 are formed in the bottom plate 210 to expose the first lamp holders 500, respectively. The storage container 200 is made of a metal material having excellent strength and excellent electrical conductivity.

The lamps 300 are arranged in parallel with each other on the same plane and accommodated in the storage container 200. One end of the lamps 300 are provided with power lead wires 310 to which a driving voltage is applied from the power supply substrate 600 to be disposed under the storage container 200, and at the other end of the lamps 300, the driving power applied to the power lead wires 310 is formed. In order to maintain a constant voltage, ground leads 320 which are grounded to the storage container 200 are formed. Such lamps 300 are cold cathode fluorescent lamps (CCFLs) having electrodes formed therein.

The alignment plate 400 has a shape corresponding to at least two ground lead wires 320. Specifically, the alignment plate 400 is elongated along a direction perpendicular to the longitudinal direction of the lamps 300. Alternatively, the alignment plates 400 may be formed of a plurality of alignment plates 400 corresponding to a smaller number than the entire ground lead wires 320.

The alignment plate 400 is electrically coupled to the storage container 200. Specifically, the alignment plate 400 is coupled to the outside of the storage container 200. For example, the alignment plate 400 may be coupled to the bottom of the storage container 200, that is, the bottom surface of the bottom plate 210. Alternatively, the alignment plate 400 may be coupled inside the storage container 200.

The alignment plate 400 is made of a metal material having excellent electrical conductivity. For example, the alignment plate 400 is made of stainless steel having excellent strength (hereinafter, SUS). On the contrary, the alignment plate 400 may be made of aluminum when the weight reduction is a top priority, depending on the characteristics of the product.

The alignment plate 400 is generally manufactured using a mold. Alternatively, the alignment plate 400 may be manufactured by using a machine tool such as a bending machine, a milling machine, and a table drill machine with a SUS plate having a thickness required according to a product.

The alignment plate 400 includes a container coupling part 410 coupled to the storage container 200 and a holder fixing part 420 into which the first lamp holder 500 is inserted and fixed. For example, the container coupling part 410 may be alternately formed with the holder fixing parts 420 to be coupled to the rear surface of the storage container 200. In addition, the holder fixing part 420 may be formed while having a step with the container coupling part 410.

In this case, the holder fixing part 420 may expose the first lamp holder 500, and the container coupling part 410 may be attached to the first opening 212 so that the container coupling part 410 may be closely attached to the rear surface of the storage container 200. Is inserted. Here, the planar area of the holder fixing part 420 is equal to the size of the first opening 212, or narrowly formed by a predetermined difference.

The container coupling part 410 is bolted to the rear surface of the storage container 200. For the bolt coupling, the second coupling hole 412 is formed in the container coupling part 410, and the second coupling hole 214 is formed in the bottom plate 210 of the storage container 200. Alternatively, the container coupling portion 410 and the bottom plate 210 may be riveted through the first coupling hole 412 and the second coupling hole 214.

On the other hand, the container coupling portion 410 and the bottom plate 210 are generally formed with one first and second coupling holes 412 and 214, respectively, but when the planar area of the backlight assembly 100 becomes larger, This may be formed.

The first lamp holders 500 are fixedly fixed to the holder fixing part 420 of the alignment plate 400. In detail, the first lamp holder 500 is inserted into and fixed to the holder fixing part 420. To this end, the holder fixing part 420 includes a first insertion groove 422 recessed to a predetermined depth from the side. That is, a part of the first lamp holder 500 is inserted into and fixed to the first insertion groove 422.

The first lamp holder 500 includes an insulating body 510 and a conductive socket 520. Insulating body 510 is generally made of a resin material excellent in electrical insulation and excellent workability. The insulating body 510 includes a lamp fixing part 512 for fixing an end of the lamp 300 corresponding to the ground lead wire 320, and a body coupling part 514 inserted into and fixed to the holder fixing part 420.

Here, the holder fixing part 420 includes coupling grooves 424 on opposite side portions 220 of the first insertion groove 422, and the body coupling part 514 has a hook corresponding to the coupling groove 424. (515). Thus, the body coupling portion 514 is hooks 515 are coupled to the hook 515 in the coupling groove 424 of the holder fixing portion 420 as a result, the first lamp holder 500 to the alignment plate 400 After insertion, do not exit.

The conductive socket 520 is inserted and coupled to the inside of the insulating body 510. To this end, the insulating body 510 includes a holder cap 516 that is coupled to and separated from the top. As such, the conductive socket 520 is coupled to the insulating body 510 by removing the holder cap 516 from the insulating body 510 and inserting the holder cap 516 from the top.

As such, the backlight assembly 100 inserts and fixes the first lamp holder 500 to the holder fixing part 420 of the alignment plate 400, and removes the holder fixing part 420 and the first lamp holder 500. By inserting into the opening 212, the container coupling part 410 of the alignment plate 400 and the bottom plate 210 of the storage container 200 may be electrically coupled to each other.

Meanwhile, the backlight assembly 100 further includes a plurality of second lamp holders 610 that fix an end portion of the lamp 300 corresponding to the power lead 310. Here, the storage container 200 further includes a plurality of second openings 216 for exposing the second lamp holders 610 to the top, respectively.

In addition, the backlight assembly 100 further includes a power supply substrate 600 disposed on the rear surface of the storage container 200 to apply a driving voltage to the power lead wire 310.

In addition, the backlight assembly 100 may include an insulating plate 620 to align and fix the second lamp holders 610 and light disposed between the lamps 300 and the storage container 200 to be emitted downward from the lamps 300. It further includes a reflecting member 630 for reflecting. Here, the reflective member 630 may include the third coupling holes 632 corresponding to the first and second coupling holes 412 and 214 so as not to interfere with the bolt coupling between the alignment plate 400 and the storage container 200. It may include.

4 is an exploded perspective view illustrating the storage container and the alignment plate and the first lamp holder according to the first embodiment of FIG. 3.

In this embodiment, since the first lamp holder and the alignment plate are the same as those of Figs. 1 to 3, the same reference numerals are used.

3 and 4, in the first lamp holder 500, the body coupling part 514 of the insulating body 510 has a side surface of the holder fixing part 420 of the alignment plate 400, that is, the first insertion groove. After sliding and being inserted from 422, the upper surface of the bottom plate 210 is exposed through the first opening 212 of the bottom plate 210 of the storage container 200.

The body coupling part 514 further includes a second insertion groove 517 formed to correspond to the first insertion groove 422 and coupled to the first insertion groove 422. As a result, the body coupling part 514 may be inserted deeper than the depth of the first insertion groove 422, thereby being more fully fixed to the holder fixing part 420.

Meanwhile, the conductive socket 520 inserted into the insulation body 510 electrically connects the ground lead wire 320 and the alignment plate 400. That is, the conductive socket 520 includes a first connecting portion 522 connected to the ground lead wire 320 and a second connecting portion 524 formed by bending the first connecting portion 522. The second connecting portion 524 is substantially connected to the lower surface 426 of the holder fixing portion 420. Alternatively, the second connector 524 may be connected to the upper surface of the holder fixing part 426. In addition, the second connector 524 may be connected to the holder fixing part 426 by a separate conductive member.

As a result, the ground lead wire 320 and the alignment plate 400 are electrically connected to each other by the first and second connection parts 522 and 524. The conductive socket 520 is manufactured using a separate mold, and is made of a metal material having excellent electrical conductivity.

Accordingly, in the insulating body 510, the lamp fixing part 512 is formed to correspond to the first connector 522, and the body coupling part 514 is formed to correspond to the second connector 524. Body coupling portion 514 has a structure surrounding the edge of the second connecting portion 524. Here, the end portion of the body coupling portion 514 in the insertion direction is opened so that the second connection portion 524 is connected to the holder fixing portion 420. The body coupling part 514 may pressurize the 2nd connection part 524 and may guide the 2nd connection part 524 in some cases.

Accordingly, the first lamp holder 500 inserts and fixes the body coupling part 514 of the insulating body 510 to the holder fixing part 420, thereby providing the first and second connecting parts 522 and 524 of the conductive socket 520. The ground lead wires 320 and the alignment plate 400 may be connected to each other.

That is, the conventional ground wire is removed to eliminate the soldering and bolting process, thereby simplifying the grounding of the ground leads 320. This eliminates manual work such as soldering and bolting processes, contributing to realizing process automation.

FIG. 5 is a perspective view illustrating the alignment plate and the first lamp holder illustrated in FIG. 4, and FIG. 6 is a perspective view illustrating the alignment plate and the conductive socket in FIG. 5.

4 to 6, the second connection portion 524 of the conductive socket 520 includes a ring-shaped coupling terminal 525 having an open end, and the holder fixing portion 420 has a coupling terminal 525. And a protruding terminal 428 coupled to it.

The protruding terminal 428 protrudes from the lower surface 426 of the holder fixing part 420. The protruding terminal 428 is formed by bending a part of the holder fixing part 420. That is, the protruding terminal 428 is formed by changing the mold of the alignment plate 400 and cutting it, and then bending it using a bending machine. On the contrary, the protruding terminal 428 may be formed separately and bonded to the lower surface 426 of the holder fixing part 420.

Specifically, the coupling terminal 525 includes a pressing part 526 having a horseshoe shape and both ends protruding inward. That is, the pressing unit 526 presses both surfaces of the protruding terminal 428. The pressing portion 526 has a rounded shape to facilitate the insertion and pressing of the protruding terminal 428. Here, the distance between the pressing unit 526 is formed to be smaller than the width of the projecting terminal 428 to a predetermined difference in order to press the projecting terminal 428.

Therefore, the second connecting portion 524 forms a coupling terminal 525 having a pressing portion 526 at the end to press the protruding terminal 428 of the holder fixing portion 420, thereby making it possible to connect with a stronger bonding force. Can be. That is, the second connection part 524 and the holder fixing part 420 can prevent the connection failure caused by the external force.

On the other hand, the coupling terminal 525 further includes a protrusion 527 protruding at a predetermined length at both ends along the longitudinal direction of the alignment plate 400. Accordingly, the body coupling portion 514 is formed with a guide groove 518 spaced at a predetermined interval of the holder fixing portion 420. As a result, the protrusion 527 is inserted and fixed to the body coupling part 514 along the guide groove 518.

Therefore, when the coupling terminal 525 is coupled to the holder fixing part 420, the coupling terminal 525 may remove frictional force with the holder fixing part 420. Accordingly, the first lamp holder 500 may be more easily coupled to the alignment plate 400.

On the contrary, the body coupling part 514 is a guide groove 518 when the coupling terminal 525 is connected to the lower surface 426 of the holder fixing part 420 in addition to the protruding terminal 428 to minimize connection resistance. ) May be formed on a surface in contact with the holder fixing part 420.

FIG. 7 is a perspective view of a conductive socket of the alignment plate and the first lamp holder of the second embodiment shown in FIG. 3.

Referring to FIG. 7, the holder fixing part 432 of the alignment plate 430 includes a protruding terminal 434 protruding from the lower surface 433 and having a fixing hole 435 formed therein, and a second portion of the conductive socket 530. The connection part 532 includes a coupling terminal 533 inserted into and fixed to the fixing hole 435.

The protruding terminal 434 is partially cut in a state in which both ends thereof are connected to the holder fixing part 432, and then protrudes to form the fixing hole 435. The protruding terminal 434 is formed by changing the mold at the time of manufacturing the alignment plate 430. Alternatively, the protruding terminal 434 may be formed by punching on the opposite side of the contact surface of the second connecting portion 532 by a press.

Coupling terminal 533 is formed to be relatively narrow in width so that the end is inserted into the fixing hole (435). At this time, if the width of the coupling terminal 533 is too narrow, since it may be broken and short-circuited, the coupling terminal 533 should have a width of a level having a minimum strength itself. Alternatively, the coupling terminal 533 may maintain the original width by expanding the fixing hole 435 of the protruding terminal 434.

The cross section of the coupling terminal 533 is the same as the shape of the fixing hole 435 in order to maximize the contact surface with the protruding terminal 434. On the contrary, when the height of the fixing hole 435 is very small, the coupling terminal 533 may have substantially no problem in contact with the protruding terminal 434. Therefore, the coupling terminal 533 may have the same cross-section for the convenience of the machining operation.

As described above, the holder fixing part 432 simply inserts and fixes the coupling terminal 533 of the second connecting part 532 to the fixing hole 435 of the protruding terminal 434, thereby holding the second connecting part 532. May be connected to the government 432.

FIG. 8 is a perspective view combining the alignment plate and the first lamp holder of the third embodiment illustrated in FIG. 3, FIG. 9 is a perspective view illustrating the alignment plate and the conductive socket illustrated in FIG. 8, and FIG. Sectional drawing cut along the line I '.

8 to 10, the second connection part 542 included in the conductive socket 541 of the first lamp holder 540 protrudes in a direction opposite to the holder fixing part 442 of the alignment plate 440. A coupling terminal 543 having a protrusion 544.

The protrusion 544 is substantially a portion pressed by the body coupling portion 545 and consists of at least two. That is, the protrusion 544 is pressed by the pressing surface 546 of the body coupling portion 545 adjacent to the lower surface 443 of the holder fixing portion 442. Specifically, the coupling terminal 543 is the projection 544 is pressed by the pressing surface 546 between the pressing surface 546 and the lower surface 443 of the holder fixing portion 442, thereby the holding of the holder fixing portion 442 The bottom surface 443 is in surface contact.

The protrusion 544 protrudes with an angle θ of about 70 ° or less with the holder fixing portion 442. This is because when the body coupling part 545 and the coupling terminal 543 are inserted into the holder fixing part 442, a predetermined flow is given in the vertical direction of the holder fixing part 442 to facilitate the coupling.

The protrusions 544 are formed at both side surfaces corresponding to the ends of the coupling terminal 543. Alternatively, the protrusion 544 may be formed on both sides of the coupling terminal 543. In this case, the protrusion 544 may have a smaller angle θ with a predetermined difference toward the end of the coupling terminal 543. That is, the angle θ formed by the holder fixing part 442 at the end of the protruding portion 544 can be made smaller than other positions. This is to facilitate initial insertion when the body coupling part 545 and the coupling terminal 543 are inserted into the holder fixing part 442.

As described above, the coupling terminal 543 of the second connecting portion 542 may be connected to the alignment plate 440 with a larger area by making surface contact with the holder fixing portion 442 by the protrusion 544. Accordingly, the coupling terminal 543 and the holder fixing part 442 may have a low connection resistance, and thus may be more stably connected.

 FIG. 11 is a perspective view illustrating a combination of the alignment plate and the first lamp holder of the fourth embodiment illustrated in FIG. 3.

Referring to FIG. 11, the second connection portion 562 of the first lamp holder 550 includes a coupling terminal 563 extending longer than the body coupling portion 565.

Coupling terminal 563 includes a crimping portion 564 that is crimped to the holder fixing portion 460. That is, the coupling terminal 563 is connected to the holder fixing part 460 by the crimping part 564. The crimping portion 564 is formed by crimping the coupling terminal 563 and the holder fixing portion 460 using a separate crimping tool or punching machine. Therefore, the crimping portion 564 has a shape substantially recessed to a predetermined depth. Meanwhile, a pressing trace (not shown) corresponding to the pressing part 564 may also be formed in the holder fixing part 460.

The crimping portion 564 is a coupling terminal 563 and the holder fixing portion 460 that may be generated due to an external impact, or flow due to the assembly tolerance of the first lamp holder 550 and the holder fixing portion 460. Bad connection can be prevented.

The crimping portion 564 is formed to be elongated by a predetermined length in a direction perpendicular to the longitudinal direction of the alignment plate 450. Alternatively, the crimping portion 564 may have various shapes according to the crimping tool or punching machine. In addition, although only one crimping portion 564 is formed in this embodiment, more than one may be formed according to the characteristics and size of the product.

As such, the coupling terminal 563 may be formed longer than the body coupling portion 565 without changing the shape of the coupling terminal 563 and includes a crimping portion 564 formed by a crimping tool or a punching machine, whereby the alignment plate 450 and the conductive socket ( The mold for manufacturing 560 can be simplified.

FIG. 12 is a combination of the alignment plate and the first lamp holder of the fifth embodiment shown in FIG.

Referring to FIG. 12, the first lamp holder 570 includes a coupling terminal 572 having an extension 574 extending along the side surface 473 of the holder fixing portion 472 of the alignment plate 470. .

An extension 574 is formed at the end of the coupling terminal 572 and is substantially coupled to the side surface 473 of the holder fixing portion 472. To this end, the coupling terminal 572 should be extended only to the side 473 of the holder fixing part 472 after the first lamp holder 570 is inserted and fixed to the holder fixing part 472 of the alignment plate 470. do.

If the coupling terminal 572 does not reach the side 473 of the holder fixing part 472 or extends beyond the side 473, the extension 574 is connected to the side 473 of the holder fixing part 472. May not be combined. Therefore, the coupling terminal 572 may cause a poor connection with the holder fixing part 472. Of course, the coupling terminal 572 is connected to the holder fixing portion 472 in addition to the extension portion 574, but this is due to the external shock or the assembly tolerance of the first lamp holder 570 and the alignment plate 470. Can be short-circuited, so you can not have the reliability of the connection.

In addition, since the extension part 574 acts as a stopper to prevent the first lamp holder 570 from being coupled to the holder fixing part 472 and then exits, the first lamp holder 570 and the alignment plate ( 470 can be improved.

FIG. 13 is an exploded perspective view of the heat exchanger plate and the first lamp holder of the sixth embodiment shown in FIG. 3, and FIG. 14 is a view illustrating the heat exchanger plate and the first lamp holder illustrated in FIG. 13 along a line II-II ′. It is a cut section.

13 and 14, the second connecting portion 590 of the first lamp holder 580 has a coupling terminal 592 having a protrusion 593 protruding from the holder fixing portion 490 of the alignment plate 480. It includes.

The protrusion 593 is formed in the coupling terminal 592 extending substantially than the body coupling 595. Alternatively, the protrusion 593 may be formed anywhere in the region where the coupling terminal 592 and the holder fixing part 490 contact.

The holder fixing part 490 includes a recessed terminal 492 recessed corresponding to the protrusion 593. That is, the coupling terminal 592 is electrically connected to the holder fixing part 490 by the protrusion 593 coupled to the recessed terminal 492.

The protrusion 593 and the recessed terminal 492 have a rounded shape to facilitate coupling with each other. In contrast, the protrusion 593 and the recessed terminal 492 may have various shapes according to the characteristics of the product. In the present embodiment, two protrusions 593 and recessed terminals 492 may be formed.

As described above, the coupling terminal 592 forms the protrusions 593 in various shapes and various numbers, and correspondingly, the depression terminals 492 are also formed in the holder fixing part 490 to be flexible according to the characteristics and sizes of the products. The coupling terminal 592 can be connected to the holder fixing part 490 while corresponding thereto.

In addition, the coupling terminal 592 may include an extension portion 574 of FIG. 12 that extends and is coupled along the side of the holder fixing portion 490 at the end to further enhance the coupling force and the connection force. .

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

In the present embodiment, since the backlight assembly has the same structure as that shown in FIGS. 1 to 14, the same reference numerals are used, and detailed description thereof will be omitted.

Referring to FIG. 15, the liquid crystal display 1000 according to the exemplary embodiment includes a backlight assembly 100, a liquid crystal display panel 700, and a top chassis 800.

The liquid crystal display panel 700 is injected between the array substrate 710 for displaying pixels, the color filter substrate 720 facing the array substrate 710, and the array substrate 710 and the color filter substrate 720. It includes a liquid crystal layer (not shown).

The array substrate 710 is a TFT substrate in which thin film transistors (hereinafter referred to as TFTs) as switching elements are formed in a matrix form. In the color filter substrate 720, RGB pixels for implementing colors are formed in a thin film form.

In addition, the liquid crystal display panel 700 further includes a printed circuit board 730 such as a gate voltage and a data voltage, and a panel printed circuit film 740 connecting the printed circuit board 730 to the array substrate 710.

The top chassis 800 is coupled to the storage container 200 while fixing the edge of the liquid crystal display panel 700. The top chassis 800 is made of, for example, the same metal material as the storage container 200.

In addition, the top chassis 800 may be electrically connected to the alignment plate 400. As a result, the ground area of the ground lead wire 320 is extended to the storage container 200 and the top chassis 800 to maintain the driving voltage applied to the power lead wire 310 more uniformly.

Meanwhile, the liquid crystal display 1000 may include a diffuser plate 900 for diffusing light emitted from the lamps 300, an optical sheet 950 and an optical sheet 950 for improving characteristics of light emitted from the diffuser plate 900. And a middle mold 960 supporting the edge of the liquid crystal display panel 700 while fixing the edge of the panel.

According to such a backlight assembly and a liquid crystal display having the same, the ground lead wire is electrically connected to the metal alignment plate coupled to the storage container through the conductive socket of the first lamp holder, thereby easily connecting the ground lead wires to the storage container. Can be grounded.

In addition, such grounding does not require additional manual work, which may contribute to realizing process automation.

Although the detailed description of the present invention has been described with reference to the preferred embodiments of the present invention, those skilled in the art or those skilled in the art will have the idea of the present invention described in the claims to be described later. It will be understood that various modifications and variations can be made in the present invention without departing from the scope of the present invention.

Claims (20)

A storage container; A plurality of lamps housed in the storage container in parallel with each other, a power lead wire is formed at one end thereof, and a ground lead wire is formed at the other end thereof; An alignment plate coupled to the storage container to electrically correspond to the ground leads; And And a plurality of first lamp holders fixedly fixed to the alignment plate and having a conductive body inserted into the insulating body and electrically connected to the ground lead wire and the alignment plate. The backlight assembly of claim 1, wherein the alignment plate has a shape corresponding to two or more of the ground leads. The method of claim 2, wherein the alignment plate is A container coupling part coupled to the storage container; And And a holder fixing part to which the first lamp holder is inserted and fixed. The backlight assembly of claim 3, wherein the alignment plate is coupled to an outer side of the storage container. The method of claim 4, wherein the conductive socket A first connection part connected to the ground lead wire; And And a second connection part bent from the first connection part and electrically connected to the holder fixing part. The method of claim 5, wherein the insulating body is A lamp fixing part which protects the first connection part and fixes the lamp; And And a body coupling part that protects the second connection part and is fixedly coupled to the holder fixing part. The backlight assembly of claim 6, wherein the second connection part comprises an annular coupling terminal having an open end, and the holder fixing part includes a protruding terminal protruding from a lower surface and coupled to the coupling terminal. The backlight assembly of claim 7, wherein the coupling terminal comprises a pressing part for pressing both surfaces of the protruding terminal. The backlight assembly of claim 6, wherein the holder fixing part includes a protruding terminal protruding from a lower surface thereof and having a fixing hole formed at a center thereof, and the second connecting part comprises a coupling terminal inserted into and fixed to the fixing hole. 7. The backlight assembly of claim 6, wherein the second connecting portion includes a coupling terminal having at least two protrusions projecting in a direction opposite to the holder fixing portion and pressed by the body coupling portion. The backlight assembly of claim 6, wherein the second connector comprises a coupling terminal extending longer than the body coupling portion. 12. The backlight assembly of claim 11, wherein the coupling terminal comprises a crimp unit that is crimped to the holder fixing unit. The backlight assembly of claim 11, wherein the coupling terminal comprises an extension part extending along a side of the holder fixing part and fixed to the side. The backlight assembly of claim 6, wherein the second connection part includes a coupling terminal having a protrusion protruding from the holder fixing part, and the holder fixing part includes a recessed terminal recessed corresponding to the protrusion part. The backlight assembly of claim 14, wherein the protrusion has a rounded shape. The backlight assembly of claim 1, wherein the alignment plate is made of a metallic material. The method of claim 1, And a plurality of second lamp holders fixing an end portion of the lamp corresponding to the power lead. The method of claim 17, And a power supply substrate disposed in the storage container to apply a driving voltage to the power lead wire. A storage container, a plurality of lamps stored in parallel with each other in the storage container and having ground leads formed at one end thereof, an alignment plate coupled to the storage container to electrically correspond to the ground leads, and fixedly fixed to the alignment plate. A backlight assembly including a plurality of lamp holders having an insulating body and a conductive socket inserted into the insulating body to electrically connect the ground lead and the alignment plate; A liquid crystal display panel disposed on the lamps to display an image; And And a top chassis coupled to the storage container while fixing an edge of the liquid crystal display panel. 20. The liquid crystal display of claim 19, wherein the top chassis is electrically connected to the alignment plate.

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