KR20080046335A - Containing module used in display device, backlight assembly and display device having the same - Google Patents

Abstract

A receiving module for a display, and a backlight assembly and a display device having the same are provided to improve efficiency of a manufacturing process by guiding a printed circuit board to a desired position. A receiving module includes a receiving vessel, a reinforcing member(50), and a printed circuit board. The receiving vessel has a bottom plate(5) and a plurality of sidewalls(10), which are disposed around the bottom plate. The reinforcing member engages with a rear surface of the bottom plate and an alignment portion is formed in the reinforcing member. The printed circuit board is aligned by the alignment portion and is engaged with the reinforcing member. Each of the sidewalls includes a support portion(11) and a side portion(13). The support portion is engaged with an edge of the back surface of the bottom plate. A receiving space is protruded toward an upper side along the side surface of the bottom plate from the support portion.

Description

A storage module for a display device, a backlight assembly having the same, and a display device {CONTAINING MODULE USED IN DISPLAY DEVICE, BACKLIGHT ASSEMBLY AND DISPLAY DEVICE HAVING THE SAME}

1 is a perspective view of an accommodating module for a display device according to an exemplary embodiment.

FIG. 2 is an exploded perspective view of the accommodation module for the display device illustrated in FIG. 1.

3 is a cross-sectional view of the accommodating module for the display device illustrated in FIG. 1 taken along line II ′.

4 is a cross-sectional view of the accommodating module for the display device illustrated in FIG. 1 taken along the line II-II ′.

5 is an enlarged view of the accommodation module for the display device illustrated in FIG. 1.

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

FIG. 7 is a cross-sectional view of the backlight assembly illustrated in FIG. 6 taken along line III-III '.

8 is a perspective view of a display device according to an exemplary embodiment of the present invention.

FIG. 9 is a cross-sectional view of the display device illustrated in FIG. 8 taken along line IV-IV ′.

FIG. 10 is a cross-sectional view of the display device illustrated in FIG. 8 taken along the line VV ′.

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

3: storage container 5: bottom plate

10, 20, 30, 40: side wall 11: support

13: side portion 50, 60: reinforcing member

51: alignment unit 52, 82: alignment hole

53: alignment screw 55, 65, 85, 87: fastening hole

80: power supply board 91, 95, 97: fastening screw

100: storage module 300 for the display device: backlight assembly

301: light source 302: substrate

304: point light source 500: display device

660: panel driver board 661: control printed circuit board

663: source printed circuit board 650: display panel

The present invention relates to an accommodating module for a display device, a backlight assembly having the same, and a display device. More specifically, the present invention relates to an accommodating module for a display device having improved assembly property between a printed circuit board and an accommodating container, and a backlight assembly and a display device having the same.

In general, a flat panel display such as a liquid crystal display device includes a slim display unit such as a liquid crystal display panel and a backlight unit that provides light that is the basis of image display on the display unit. The liquid crystal display device may include a printed circuit board such as a panel driver board which outputs an image signal to a display unit and a power supply board which outputs driving power to the backlight unit.

In the display device, the display unit and the backlight unit may be accommodated in a storage container called a bottom chassis, and the printed circuit board may be disposed outside the storage container. The storage container is made of a metal material having sufficient rigidity. The power supply board is generally disposed on the back of the storage container, and the panel driver board may be disposed on the side or the back of the storage container.

In order to fix the printed circuit board to the storage container, an embossing portion may be formed on the rear surface of the storage container, and a fastening hole for screwing and a guide boss for guiding the printed circuit board may be formed in the embossing portion. Formation of the storage container and the embossed portion may be made through a press working.

However, as described above, a method of guiding and fixing a printed circuit board by forming an embossing part through press working in a storage container is difficult to apply to an enlarged display device.

For example, in the case of a large display device such as a TV, a split storage container formed by combining a plurality of chassis may be used. A plurality of chassis constituting the split storage container may be manufactured by an extrusion method which is more advantageous in terms of manufacturing time and cost than the press working method. As such, there is a problem in that the storage container manufactured by the extrusion molding method is difficult or excessively expensive to form elements such as an embossing part for guiding and fixing the printed circuit board.

Accordingly, the technical problem of the present invention is to solve such a conventional problem, and an object of the present invention is to provide an accommodating module for a display device which easily guides and fixes a printed circuit board.

Another object of the present invention is to provide a backlight assembly including the accommodation module for the display device.

Still another object of the present invention is to provide a display device including the accommodation module for the display device.

In order to achieve the object of the present invention described above, a storage module for a display device includes a storage container, a reinforcing member, and a printed circuit board. The storage container includes a bottom plate and a plurality of side walls disposed at the periphery of the bottom plate. The reinforcing member is coupled to the bottom of the bottom plate, the reinforcing member is formed with an alignment portion. The printed circuit board is positioned in position by the alignment portion and coupled to the reinforcing member.

In one embodiment, each sidewall may comprise a support and a side portion. The support is coupled to the edge of the back of the bottom plate. The side portion protrudes upward from the support along the side of the bottom plate to form a storage space. The alignment unit may include a first alignment hole and an alignment member formed in the reinforcement member. The alignment member may include a coupling part and a head part. The coupling portion is inserted into the first alignment hole, and the head portion protrudes out of the first alignment hole. A second alignment hole in which the head part is inserted is formed in the printed circuit board. The alignment member may be a screw. The accommodating module for the display device may further include a fastening member for fixing the printed circuit board to the reinforcing member. The reinforcing member may further include a first fastening hole into which the fastening member is inserted near the first alignment hole, and a second fastening hole corresponding to the first fastening hole and into which the fastening member is inserted may be further formed in the printed circuit board.

In order to realize the above object of the present invention, the backlight assembly according to the embodiment includes a storage container, a plurality of light sources, a first reinforcing member, and a power supply substrate. The storage container includes a bottom plate and a plurality of side walls. Each side wall may comprise a support and a side portion. The support is coupled to the edge of the back of the bottom plate. The side portion protrudes upward from the support along the side of the bottom plate to form a storage space. The light sources are arranged in the storage space. The first reinforcing member is coupled to the support and the back, and the first alignment screw is fastened to the first reinforcing member. The power supply board is disposed on the bottom of the bottom plate, and a first alignment hole is formed at one edge of the power supply board. The head portion of the first alignment screw is inserted into the first alignment hole.

In order to realize another object of the present invention, a display device according to the embodiment includes a storage container, a plurality of light sources, a first reinforcing member, a second reinforcing member, a power supply substrate, a display panel and a panel driving substrate. The storage container includes a bottom plate and a plurality of sidewalls disposed at a periphery of the bottom plate to form a storage space. The light sources are arranged in the storage space. The first reinforcing member is coupled to the rear surface of the bottom plate, and the first alignment screw is fastened to the first reinforcing member. The second reinforcing member is coupled to the rear surface of the bottom plate, and the second alignment screw is fastened. The power supply substrate is formed with a first alignment hole into which the head of the first alignment screw is inserted. The power supply substrate supplies driving power to the light sources. The display panel is disposed above the light sources. The panel driving substrate is provided with a second alignment hole into which the head of the second alignment screw is inserted. The panel driver board outputs a panel drive signal to the display panel.

Such a storage module for display device, a backlight assembly having the same, and a display device can guide and fix a printed circuit board using screws, thereby improving assembly.

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

Storage module for display device

1 is a perspective view of an accommodating module for a display device according to an exemplary embodiment. FIG. 2 is an exploded perspective view of the accommodation module for the display device illustrated in FIG. 1. 1 and 2 illustrate a rear surface of the accommodation module for the display device.

1 and 2, the storage module 100 (hereinafter, referred to as a storage module) for a display device includes a storage container 3, reinforcing members 50 and 60, and a printed circuit board 80. do. The accommodation module 100 may be used to accommodate the backlight assembly included in the display device.

The storage container 3 includes a bottom plate 5 and a plurality of side walls 10, 20, 30, and 40. In the present embodiment, the bottom plate 5 and the side walls 10, 20, 30, 40 are separate members, which are combined with each other to form the receiving module 100. In another embodiment, the accommodation module 100 may be integrally formed with the bottom plate 5 and sidewalls 10, 20, 30, and 40. The storage container 3 may be a chassis made of metal or a mold made of resin.

The bottom plate 5 has a substantially rectangular shape. Thus, the bottom plate 5 may include two long sides facing each other and two short sides facing each other.

Side walls 10, 20, 30, and 40 are disposed on the long side and the short side, respectively. The sidewalls 10 and 20 disposed on the long sides are defined as the first sidewall 10 and the second sidewall 20, and the sidewalls 30 and 40 disposed on the short sides are defined as the third sidewall 30. ) And the fourth sidewall 40. Accordingly, the first sidewall 10 and the second sidewall 20 are disposed to face each other, the third sidewall 30 and the fourth sidewall 40 face each other, and the first sidewall 10 and the second sidewall ( 20) respectively.

The first sidewall 10, the second sidewall 20, the third sidewall 30, and the fourth sidewall 40 have substantially the same basic shape except for the length thereof. The first sidewall 10, the second sidewall 20, the third sidewall 30, and the fourth sidewall 40 are the support portions 11, 21, 31, 41 and the side portions 13, 23, 33, 43, respectively. It includes. Therefore, it demonstrates centering on the 1st side wall 10. FIG.

The support part 11 of the first side wall 10 covers the long side side edge of the back surface of the bottom plate 5. The support 11 and the bottom plate 5 may be fastened by screws. The side portion 13 extends upward along the sides of the support 11 and the bottom plate 5 from the edge of the support 11. Therefore, the cross section of the first sidewall 10 may have an approximately 'L' shape. Supports 11, 21, 31, and 41 of the first sidewall 10, the second sidewall 20, the third sidewall 30, and the fourth sidewall 40 together with the bottom plate 5 form a storage space. Form.

In order to prevent the supports 11, 21, 31, 41 from interfering with each other at the corners of the bottom plate 5, the longitudinal ends of the supports 11, 21, 31, 41 are partially cut. The supports 11, 21, 31, 41 are formed to form an angle of approximately 45 degrees with the side portions 13, 23, 33, 43.

The side walls 10, 20, 30, 40 may be screwed together. For example, a female screw portion may be formed in the side portion 13 of the first side wall 10, a hole may be formed in the side portion 33 of the third side wall 30, and a screw may be formed in the female screw portion through the hole. Can be fastened. The first sidewall 10, the second sidewall 20, the third sidewall 30 and the fourth sidewall 40 may be manufactured by extrusion molding.

3 is a cross-sectional view of the accommodating module for the display device illustrated in FIG. 1 taken along line II ′.

Referring to FIG. 3, the reinforcing members 50 and 60 suppress deformations such as warpage of the storage container 3. The reinforcing members 50 and 60 may be disposed on the rear surface of the bottom plate 5 in parallel with the short side direction of the bottom plate 5, and have a bar shape.

The accommodation module 100 may include a plurality of reinforcement members 50 and 60. The reinforcement members 50 and 60 may be arranged side by side with each other. The reinforcing members 50 and 60 may be manufactured by extrusion molding. Since the reinforcing members 50 and 60 are manufactured by extrusion molding, the reinforcing members 50 and 60 are formed to have a uniform thickness along the longitudinal direction.

As shown in FIG. 3, the reinforcement members 50 and 60 may be coupled to the bottom plate 5 and the support portions 11 by the coupling screws 97. An alignment part 51 may be formed in at least one of the reinforcement members 50 and 60. In this embodiment, the alignment portion 51 is formed on the reinforcing member 50 (hereinafter, referred to as a 'first reinforcing member') adjacent to the third side wall 30. Two alignment parts 51 are formed in proximity to both end portions of the first reinforcing member 50. The alignment unit 51 guides the printed circuit board 80 to be described later to a designated position.

 4 is a cross-sectional view of the accommodating module for the display device illustrated in FIG. 1 taken along the line II-II ′. 5 is an enlarged view of the accommodation module for the display device illustrated in FIG. 1.

1, 4 and 5, the alignment unit 51 may include a first alignment hole 52 and an alignment member 53 formed in the first reinforcement member 50. The alignment member 53 may be an alignment screw 53 fastened to the first alignment hole 52. The alignment member 53 includes a coupling portion inserted into the first alignment hole 52 and a head portion protruding outward from the first alignment hole 52 from the coupling portion.

The printed circuit board 80 may be a plate formed along the length direction of the first reinforcing member 50. The printed circuit board 80 is disposed on the first reinforcing member 50 and the reinforcing member 60 adjacent thereto (hereinafter, referred to as a second reinforcing member). The printed circuit board 80 is provided with a first alignment hole 52 and a second alignment hole 82 corresponding to the alignment screw 53. The head portion of the alignment screw 53 is inserted into the second alignment hole 82. Therefore, the printed circuit board 80 may be guided to a designated position on the first reinforcing member 50. In FIG. 5, the head portion of the alignment screw 53 is disposed in the second alignment hole 82, but the head portion may protrude out of the second alignment hole 82.

The accommodation module 100 may further include a fastening member 91 for fixing the printed circuit board 80 to the first reinforcing member 50. The fastening member 91 may be a fastening screw 91. A first fastening hole 55 may be further formed in the first reinforcing member 50, and a second fastening hole 85 corresponding to the first fastening hole 55 may be further formed in the printed circuit board 80. . The first fastening hole 55 is formed near the first alignment hole 52, and the second fastening hole 85 is formed near the second alignment hole 82. The fastening screw 91 is inserted into the first fastening hole 55 and the second fastening hole 85 to fix the printed circuit board 80 on the first reinforcing member 50.

A third fastening hole 65 may be formed in the second reinforcing member 60, and a fourth fastening hole 87 corresponding to the third fastening hole 65 may be further formed in the printed circuit board 80. The accommodating module 100 may further include a fastening screw 95 inserted into the third fastening hole 65 and the fourth fastening hole 87 to fix the printed circuit board 80 to the second reinforcing member 60. Can be.

Unlike the present embodiment, the first alignment portion may be formed on one side of the first reinforcing member 50, and the second alignment portion may be formed alternately with the first alignment portion on the second reinforcement member 60. In addition, the alignment member 53 may be a hook inserted into the first alignment hole 52. In this case, the head part of the hook may be inserted into the second alignment hole 82 formed in the printed circuit board 80.

Backlight assembly

6 is an exploded perspective view of a backlight assembly according to an embodiment of the present invention. FIG. 7 is a cross-sectional view of the backlight assembly illustrated in FIG. 6 taken along line III-III '.

6 and 7, the backlight assembly 300 includes a storage container 303, a plurality of light sources 301, reinforcing members 350 and 360, and a power supply substrate 380.

The storage container 303 is substantially the same as the storage container 3 shown in FIGS. 1 and 2. Wire drawing openings 307 are formed in the bottom plate 305 near the third sidewall 330 and the fourth sidewall 340.

Each light source 301 may include a substrate 302 and a plurality of point light sources 304, as shown in FIGS. 6 and 7. In other embodiments, the light source 301 may comprise a lamp.

The substrate 302 is disposed on the bottom plate 305 on the storage space side. The substrate 302 has a plate shape formed long in the long side direction of the bottom plate 305. Power supply wirings may be formed on the substrate 302. The point light sources 304 are disposed on the substrate 302. The substrate 302 may include a connector 308 electrically connected to the power supply substrate 380. The point light source 304 may be a white light emitting diode. Alternatively, the point light source 304 may include a red light emitting diode, a green light emitting diode, and a blue light emitting diode.

The reinforcing members 350 and 360 are disposed on the rear surface of the bottom plate 305. The reinforcement members 350 and 360 may be substantially the same as the reinforcement members 50 and 60 illustrated in FIGS. 1 and 2. Among the reinforcing members 350 and 360, the reinforcing members 350 and 360 adjacent to the third sidewall 330 and the fourth sidewall 340, respectively, are defined as the first reinforcing member 350.

An alignment part 351 is formed in the first reinforcement member 350. Alignment portion 351 is substantially the same as alignment portion 51 shown in FIGS. 1, 2, 3, 4, and 5. However, in FIG. 6, three alignment parts 351 are formed at regular intervals on the first reinforcement member 350. That is, three first alignment holes 352 are formed in the first reinforcing member 350 at regular intervals, and the alignment screws 353 are fastened to the first alignment holes 352. The head portion of each alignment screw 353 protrudes outward from the first alignment hole 352. Fastening holes 355 are formed in the first reinforcing member 350 adjacent to each of the first alignment holes 352.

The reinforcing member adjacent to the first reinforcing member 350 is defined as the second reinforcing member 360. In the second reinforcement member 360, three alignment parts are alternately formed with the alignment part 351 formed in the first reinforcement member 350, and fastening holes are formed in the vicinity of each alignment part.

The power supply substrate 380 is disposed on the first reinforcement member 350 and the second reinforcement member 360. The backlight assembly 300 may include a plurality of power supply substrates 380. Six power supply substrates 380 are illustrated in FIG. 6, and three power supply substrates 380 are disposed around the third sidewall 330 and the fourth sidewall 340.

Each power supply substrate 380 has a second alignment hole 382 corresponding to the first alignment hole 352 formed in the first reinforcement member 350 and the second reinforcement member 360. The head portion of the alignment screw 353 is inserted into the second alignment hole 382. Thus, each power supply substrate 380 is aligned at a designated position on the first reinforcement member 350 and the second reinforcement member 360.

The fastening screws 391 are fastened to fastening holes formed in the first reinforcement member 350, the second reinforcement member 360, and the power supply substrate 380, respectively, to connect the power supply substrate 380 to the first reinforcement member 350. And on the second reinforcing member 360.

Display

8 is a perspective view of a display device according to an exemplary embodiment of the present invention. FIG. 9 is a cross-sectional view of the display device illustrated in FIG. 8 taken along line IV-IV ′.

8 and 9, the display device 500 includes a storage container 503, a plurality of light sources 501, a plurality of reinforcing members 550, 560, and 680, and a plurality of power supply substrates 580. And a display panel 650 and a panel driver substrate 660.

The storage container 503, the light sources 501, and the power supply substrate 580 are substantially the same as the storage container 303, the light sources 301, and the power supply substrates 380 shown in FIGS. 6 and 7. Do.

The reinforcing member may include a first reinforcing member 550, a second reinforcing member 560, and a third reinforcing member 680. The first reinforcement member 550 and the second reinforcement member 560 are substantially the same as the first reinforcement member 350 and the second reinforcement member 360 illustrated in FIGS. 6 and 7.

The third reinforcement member 680 is disposed between the second reinforcement member 560 proximate the third sidewall 530 and the second reinforcement member 560 proximate the fourth sidewall 540. Two third reinforcement members 680 are shown in FIG. 8. The two third reinforcing members 680 are alternately formed with the alignment portions. The alignment portion may be substantially the same as the alignment portion formed on the first reinforcement member 550 and the second reinforcement member 560.

The display device 500 may further include an optical sheet 610 and a middle frame 630.

The optical sheet 610 may include a diffusion plate 611, a diffusion sheet 613, and a light collecting sheet 615 that are sequentially stacked.

The middle frame 630 has a quadrangular frame shape open in the vertical direction. The middle frame 630 accommodates the storage container 503 and faces the sidewall of the storage container 503. The upper end of the middle frame 630 extends toward the storage space to cover the edge of the optical sheet 610.

FIG. 10 is a cross-sectional view of the display device illustrated in FIG. 8 taken along the line VV ′.

8 and 10, the display panel 650 includes a lower substrate 651, an upper substrate 655, and a liquid crystal layer interposed between both substrates. The display panels 650 and 10 display an image according to the panel driving signal applied from the panel driving plate 660 which will be described later.

The lower substrate 651 may include a plurality of pixel portions, and the upper substrate 655 may include a color filter portion corresponding to the pixel portion.

The panel driver board 660 outputs a panel driving signal to the display panel 650. The panel driver board 660 includes a plurality of circuit parts, and when any one of the circuit parts is damaged or defective, the panel driver board 660 may not be used as a whole. In this case, if the circuit board is mounted on a separate board of a plurality of circuit components, there is an advantage that the remaining boards can be reused except for the board on which the damaged circuit components are mounted. In addition, by separating the panel driver board 660 into a plurality of printed circuit boards, it is possible to save a printed circuit film that electrically connects the printed circuit boards.

In the present exemplary embodiment, the panel driver board 660 may include a control printed circuit board 661, a source printed circuit board 663, a first printed circuit film 665, and a second printed circuit film 667. .

The control printed circuit board 661 controls the timing at which the panel driving signal is applied to the display panel 650. The control printed circuit board 661 may be disposed on two third reinforcement members 680. A second alignment hole 682 corresponding to the first alignment hole formed in the third reinforcement member 680 may be formed in the control printed circuit board 661, and the third reinforcement member may be formed in the second alignment hole 682. The head portion of the alignment screw 653 which is fastened to the first alignment hole of the 680 may be inserted. Accordingly, the control printed circuit board 661 may be guided to a predetermined position on the third reinforcement member 680. The control printed circuit board 661 may be fixed to the third reinforcement member 680 by the fastening screw 691.

The source printed circuit board 663 may be disposed outside the middle frame 630 corresponding to the second sidewall 520. The source printed circuit board 663 outputs a panel driving signal to the display panel 650 according to the instruction of the control printed circuit board 661.

The first printed circuit film 665 electrically connects the control printed circuit board 661 and the source printed circuit board 663. The first printed circuit film 665 is bent and drawn out to the rear surface of the bottom plate 505. The second printed circuit film 667 electrically connects the lower substrate 651 and the source printed circuit board 663.

The display device 500 may further include a top chassis 690 that covers the edge of the display panel 650.

The position at which the alignment portion is formed in the reinforcement member and the position at which the power supply board 580 and the control printed circuit board 661 are disposed are not limited to those shown in FIG. 8, and there may be various modified embodiments. Do.

As described in detail above, according to the present invention, the printed circuit board may be guided to a designated position by utilizing a member such as a screw without forming a separate element such as an embossing part on the bottom plate of the storage container. Therefore, the efficiency and assembly of the manufacturing process of the storage module is improved.

In particular, in the case of adopting a split type storage container in which a bottom plate and a side wall are combined in a large display device, the printed circuit board may be guided by using a head part of a screw fastened to a reinforcing member that suppresses deformation. Therefore, the assembly and the like can be easily guided and fixed to a printed circuit board such as a power supply board and a panel driving board.

In the detailed description of the present invention described above with reference to the preferred embodiments of the present invention, those skilled in the art or those skilled in the art having ordinary skill in the art will be 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 (11)

A storage container including a bottom plate and a plurality of sidewalls disposed at a periphery of the bottom plate; A reinforcing member coupled to a rear surface of the bottom plate and having an alignment portion; And And a printed circuit board positioned by the alignment unit and coupled to the reinforcement member. The method of claim 1, wherein each side wall is A support coupled to the edge of the back surface; And And a side portion protruding upward from the support portion along a side surface of the bottom plate to form an accommodation space. The method of claim 2, wherein the alignment unit A first alignment hole formed in the reinforcing member; And And an alignment member including a coupling portion inserted into the first alignment hole and a head portion protruding from the coupling portion to the outside of the first alignment hole. The accommodation module of claim 3, wherein the printed circuit board includes a second alignment hole into which the head is inserted. The accommodation module of claim 4, wherein the alignment member is a screw. 4. The storage module of claim 3, further comprising a fastening member for fixing the printed circuit board to the reinforcing member. A storage container including a bottom plate, a plurality of sidewalls including a support portion coupled to an edge of a rear surface of the bottom plate, and a side portion protruding upward from the support portion along a side surface of the bottom plate to form an accommodation space; A plurality of light sources disposed in the accommodation space; A reinforcing member coupled to the support and the rear surface and having an alignment screw fastened thereto; And An alignment hole in which a head of the alignment screw is inserted is formed at one edge thereof, and includes a power supply substrate supplying driving power to the light sources. The backlight assembly of claim 7, wherein the backlight assembly comprises a plurality of the reinforcing members. A storage container including a bottom plate and a plurality of side walls disposed at a periphery of the bottom plate to form a storage space; A plurality of light sources disposed in the accommodation space; A first reinforcing member coupled to a rear surface of the bottom plate and having a first alignment screw fastened thereto; A second reinforcing member coupled to the rear surface and having a second alignment screw fastened thereto; A power supply substrate having a first alignment hole into which a head portion of the first alignment screw is inserted, and supplying driving power to the light sources; A display panel disposed above the light sources; And And a panel driving substrate on which the head of the second alignment screw is inserted, the panel driving signal being output to the display panel. The method of claim 9, wherein the panel driving substrate A control printed circuit board having the second alignment hole and controlling a timing at which a panel driving signal is applied to the display panel; A source printed circuit board disposed on the sidewall and outputting the panel driving signal to the display panel according to an instruction of the control printed circuit board; And A first printed circuit film electrically connecting the control printed circuit board and the source printed circuit board; And And a second printed circuit film electrically connecting the source printed circuit board and the display panel. 11. The method of claim 10, A first fastening screw for fastening the power supply substrate and the first reinforcing member; And And a second fastening screw for fastening the control printed circuit board and the second reinforcing member.

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