KR20080105487A

KR20080105487A - Backlight unit and, lcd module including backlight unit

Info

Publication number: KR20080105487A
Application number: KR1020070053136A
Authority: KR
Inventors: 김현우; 정인석; 진명국
Original assignee: 엘지디스플레이 주식회사
Priority date: 2007-05-31
Filing date: 2007-05-31
Publication date: 2008-12-04

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backlight unit for a liquid crystal display device, and more particularly to a lamp holder of a backlight unit for a liquid crystal display device.

The lamp holder according to the present invention is characterized in that it comprises a lamp grounding portion for fitting a conventional lamp, and a socket mold to which the lamp grounding portion is fixed.

In this case, a retainer fitted to the socket mold is omitted so that the ground portion is closely fitted to the lead wire, which is the end of the lamp, as compared with the related art.

Therefore, the number of parts can be reduced due to the elimination of the retainer, which can lead to an advantage in price competitiveness, and the process of pressing the retainer by hand can be omitted, thereby improving workability and improving process yield.

Description

Backlight unit and liquid crystal display module including same {Backlight unit and, LCD module including Backlight unit}

1 is an exploded perspective view schematically showing a liquid crystal display module including a conventional direct type backlight unit.

2 is an exploded perspective view of a lamp holder according to the related art;

3A and 3B are cross-sectional views sequentially illustrating a shape in which a retainer is inserted into a socket mold in which a ground portion is inserted;

4A and 4B are exploded perspective and front views of the lamp holder according to the present invention;

5A and 5B are sectional views showing a process of assembling the lampholder of the present invention.

6 is a view showing a form in which the lead wire of the lamp is fitted to the holder according to the present invention.

100 lamp holder 102 socket mold

103: first surface (bottom surface) 106: second surface

108: third side 110: fourth side

112: fifth side 114: partition wall

120: double ground portion 130: first ground portion

132: second ground portion 134, 138: first member

136,140: second member

The present invention relates to a backlight unit for a liquid crystal display device, and more particularly, to a lamp holder of a backlight unit.

In general, the backlight unit is used as a light source of the liquid crystal display device which is itself a non-light emitting device.

In other words, the backlight unit may be regarded as an essential component for the liquid crystal display device to implement display information.

The backlight may be classified into a direct type in which the lamps are arranged side by side on the lower front side of the liquid crystal panel, and an edge type in one side or both sides of the liquid crystal panel, depending on the position of the lamp. The edge type has the advantage of being easy to manufacture, while the direct type has a relatively advantageous advantage over a large liquid crystal display in terms of high uniformity of light.

Such a backlight unit includes a lamp guide, a light source, a mold frame, a reflective sheet, a light guide, a diffusion sheet and a prism sheet. It consists of an optical member including a sheet.

In this case, the lamp guide and the light guide plate are components used in an edge type backlight.

The lamp guide is a component that collects the light generated from the lamp to the light incident part of the light guide plate, and prevents light leakage and protects the lamp. In the case of a large light source, the CCFL (Cold Cathode Fluorescence Lamp) In the case of small phones such as mobile phones, LED is used. (The diameter of CCFL is usually 1.6mm ~ 2.2mm and the life is about 15,000 ~ 60,000 hours)

The mold frame is a frame for assembling all backlight components such as a light guide plate, sheets, and lamps into one, and serves to maintain shape.

The reflector sheet reflects the light exiting to the lower part of the light guide plate to the front to increase the overall brightness and to prevent the loss of light from the back of the light guide plate. The light guide panel (LGP) is usually an acrylic panel. It uses (acryl panel) and spreads the light from the lamp evenly across the screen. For this purpose, it prints a certain pattern on the surface to increase efficiency.

The diffusion sheet makes the light emitted from the light guide plate more uniform and makes the overall softening process. In addition, the pattern of the light guide plate having a dot or lattice shape is not visible, and the prism sheet (Brism or BEF: Brightness Enhancement Film) plays a role of increasing brightness by refraction and condensing of the brightness caused by the diffusion sheet. The prism sheet has a mountain-shaped fine pitch, and the lower part is vertical and the upper part is horizontal, and these two sheets are usually used as a set.

The backlight unit is configured by a selective combination of the above components, and the backlight unit is configured on the rear surface of the liquid crystal display panel to irradiate light to the liquid crystal panel.

The direct type backlight unit does not require a light guide plate because light is directly irradiated to the front surface of the substrate, and a plurality of backlight lamps are available, so that the light utilization rate is high, the handling is simple, and the size of the display surface is not limited to 20 inches. It is used for the big screen liquid crystal display device mentioned above.

1 is an exploded perspective view schematically illustrating a liquid crystal display module including a conventional direct type backlight unit.

As illustrated, the liquid crystal display module includes a liquid crystal panel 10, a backlight unit 20, a support main 30, a top case 40, and a cover bottom 50.

The liquid crystal panel 10 includes a liquid crystal layer (not shown) spaced apart from each other by a predetermined distance and injected between the upper and lower substrates A and B facing each other. Although not shown, a thin film transistor, which is a switching element, is positioned on the lower substrate B, and the gray level of an image is displayed by turn on / off driving of the thin film transistor.

A color filter (not shown) is positioned on the upper substrate A to combine R, G, and B primary colors, thereby displaying an image close to a natural color.

In addition, the liquid crystal panel 10 includes a gate and a data printed circuit board 15 for supplying a scan signal and an image signal to the lower substrate of the liquid crystal panel 10.

The backlight unit 20 positioned to the rear surface of the liquid crystal panel 10 to supply light is a direct type in which a plurality of fluorescent lamps 24 are used, and a reflecting sheet 22 is positioned below the fluorescent lamp 24. At both ends, the support side 33 supports the fluorescent lamp 24, and a plurality of optical sheets 26 are stacked on the upper side.

More specifically, both side ends of the fluorescent lamp 24 are fitted to the lamp holder 32, the lamp holder 32 is soldered to the balance PCB 34, and receives a signal from the balance PCB (34) do.

The lamp holder 32 is inserted into the opening of the support side 33, and the support side 33 is coupled to both side ends of the cover bottom 50 to support / fix the fluorescent lamp 24. .

The liquid crystal panel 10 and the backlight unit 20 are seated on the support main 30, and the support main 30 prevents and supports the flow of the liquid crystal panel 10 and the backlight unit 20.

The top case 40 covers the upper edge of the liquid crystal panel 10 and the side surface of the support main 30 to support and protect the edge of the liquid crystal panel 10 and the side surface of the support main 30.

The cover bottom 50 covers the lower part of the support main 30 to protect the lower part of the liquid crystal display module component described above. The cover bottom 50 is fastened through the support main 30, the top case 40, and a fastening means (not shown) to be modularized.

In the above-described configuration, the lamp holder 32 that sandwiches both sides of the lamp is composed of a lamp ground portion directly grounded at both ends of the lamp, and a socket mold into which the lamp ground portion is fitted.

2 is an exploded perspective view of a lamp holder according to the prior art.

As shown in the drawing, the lamp holder 34 according to the related art is composed of a retainer 62, a grounding part 70, and a socket mold 80.

The socket mold 80 has a hexahedron shape having an open top surface, and includes second to fifth consecutively formed at right angles at four sides of the first surface 82 and the first surface 82. Planes 84,86,88,90.

In this case, when the second surface 84 is referred to as a front surface, a partition 92 is formed between the second surface 84 and the fourth surface 88 opposite to the second surface 84.

The second face 84, the partition wall 92, and the fourth face 88 are sequentially "∪", "∨", "

One end of a lamp (not shown) is positioned on the etching pattern "∪" of the second surface 84, and the edge pattern of the partition 92 and the fourth surface 88 is formed. ∨ ","

Is a lead wire (not shown) of the lamp.

At this time, a part of the first surface (bottom surface 82) corresponding to the partition 92 and the fourth surface 88 of the first surface (bottom surface 82) is in an open state. A branch 70 is assembled by being fitted to the socket mold 80 through an open portion (not shown) of the bottom surface 82.

The grounding part 70 is made of a metallic material having elasticity in which a lead wire (not shown) configured at one end of the lamp (not shown) is inserted and grounded, and when the configuration is subdivided, the first to third members 72 are formed. , 74, 76).

The first member 72 and the second member 74 have the same shape, and the third member 76 has the first and second members 72 and 74 arranged in a symmetrical form and are attached and fixed at the same time. Means.

Since the lower ends of the first and second members 72 and 74 are attached to the third member 76, the upper end to which the lead wire (not shown) of the lamp is fitted has elasticity and is pushed in the direction in which pressure is applied. Thus, the lead wire (not shown) of the lamp may be closely grounded to the ground portion 80.

Hereinafter, the shapes of the first and second members 72 and 74 will be described in detail.

When the first and second members 72 and 74 are described in cross-sectional form, the first and second members 72 and 74 extend from one side of the first horizontal portion a.a 'and the first horizontal portion a and a', respectively. A vertical portion (b, b ') and a second horizontal portion (c, c') extending in a direction opposite to the first horizontal portion (a.a ') from the first vertical portion (b, b'); A second vertical portion (e, e ') including a first curved portion (d, d') extending from the other side of the second horizontal portion (c, c ') and curved at the center thereof; It includes a second bent portion (f, f ') extending in an outwardly curved portion (e, e').

Therefore, when the first and second members 72 and 74 are disposed in a symmetrical state and are simultaneously fixed through the third member 76, the respective ones of the first and second members 72 and 74 are fixed. 1 bends are located close to each other to create a space in which the lead wire (not shown) of the lamp is seated.

At this time, each of the second vertical portions (e, e ') of the first and second members (72, 74) is not parallel but arranged in a slightly open angle.

This form is intentionally configured to easily fit the lead wire (not shown) of the lamp.

The retainer 62 has a first surface 64 having an upper surface and configured with an open part OP, and a second surface 66 and a third surface 68 formed on both sides at right angles with the first surface 64. It is composed of

At this time, the second surface 64 and the third surface 66 of the retainer 62 are actually the second bends f and f 'of the first and second members 72 and 74 of the ground portion 70. And between the third and fifth surfaces 86 and 90 of the socket mold 80 to apply pressure to opposing first and second members 72 and 74 of the ground portion 70. To make contact with each other.

In this way, a lead of a lamp (not shown) located between each of the second bends f and f 'of the first and second members 72 and 74 may have the first bends d and d' facing each other. It can be fixed in contact with).

3A and 3B are cross-sectional views sequentially illustrating a shape in which a retainer is inserted into a socket mold having a ground portion according to the related art.

As shown in FIG. 3A, the ground portion 70 is fitted through an open portion (not shown) configured at the bottom of the actual socket mold 80, and at this time, the first horizontal portion of the ground portion 70 ( A, a ') part of Figure 4b is fixed to the lower end of the socket mold 80, the position is fixed.

When the lead wire 98 of the lamp is sandwiched between the second vertical portions e and e 'of the ground portion 70 inserted into the socket mold 80, the first of each second vertical portion e and e' is inserted. The lead wire 98 is positioned between the bends d and d '.

Next, a second space of the retainer 62 is spaced between the second curved portion f and f 'of the ground portion and the third and fifth surfaces 86 and 90 of the socket mold 80. The face 66 and the third face 68 are fitted.

In this way, the second and third surfaces 66 and 68 facing each other of the retainer 62 closely contact the first member 72 and the second member 74 of the ground portion 70.

Therefore, the first bends d and d 'of both sides of the ground part 70 and the lead wires 98 of the lamp may be fixed in the form of being in close contact with each other.

As a result, the lead wire 98 of the lamp is completely inserted into the lamp holder 80.

However, in the related art, a worker pushes the retainer 62 directly into the socket mold 90.

Therefore, it takes a considerable part of the working time, there is a problem of lowering the production yield, and because the operator proceeds rather than an automated machine, the retainer 62 is inserted into the socket mold 90 unless the skilled worker There is a problem that may cause a failure in the lamp holder and the lamp (80, not shown) during the process.

In addition, the presence of the retainer 62, which is required as a means for bringing the ground portion 70 into close contact with the lead wire (not shown) of the lamp, causes an increase in the number of parts and a cost increase.

The present invention has been proposed to solve the above-described problem, and in manufacturing the lamp holder, the first object is to minimize the parts constituting the backlight unit by omitting the retainer, and the process of directly participating in the The second object is to improve the production yield by omission.

A backlight unit according to the present invention for achieving the above object comprises a plurality of fluorescent lamps having lead wires on both sides; A lamp holder including a ground part for simultaneously fixing and grounding the lead wire of the fluorescent lamp, the socket part being inserted into the ground part, the inner surface of the fluorescent lamp being in contact with the ground part; And a balance PCB to which the ground portion and the lamp holder are fixed.

The ground portion may be integrated in a form in which the first and second members having the same shape are spaced apart side by side, and the first and second members may be planar, respectively, perpendicular to the first horizontal portion and the end of the first horizontal portion. An extended first vertical portion, a second vertical portion extending perpendicularly from the other side of the second horizontal portion and having a first curved portion, and a second curved portion curved outwardly from the second vertical portion, and symmetric with each other; It is characterized in that it is arranged in a fixed form.

In this case, the backlight unit further comprises a third member for fixing the first and second members of the ground portion spaced apart in a symmetrical shape.

The distance between the second vertical portions between the first curved portions and the second curved portions of the first member and the second member is 0 mm to 0.2 mm.

The second bent portion and the socket mold is characterized in that the line contact so as to minimize the contact area, wherein the second bent portion of the contact portion with the socket mold according to the position "" and "

"Characterized in a shape.

&Quot;" and " of the second bent portion

"The shape is, when the lamp lead wire is fitted to the ground portion in the state that the ground portion is fitted into the socket mold, the second bent portion"

"The pressure is concentrated in the shape to increase the elasticity of the second bent portion is characterized in that the lead wire is easily fitted.

The socket mold may include a first surface which is a bottom surface, second to fifth surfaces continuously formed at right angles to four sides of the first surface, and when the second surface is faced, And a partition wall disposed between the fourth surfaces, wherein the third and fifth surfaces between the partition wall and the fourth surface contact the second curved portion of the ground portion, and the inner wall is stepped to form a protruding end shape. It is done.

The ground part may be a double ground part integrated in a form in which the first and second ground parts including the first and second members are spaced apart from each other side by side.

The liquid crystal display module according to the present invention includes a liquid crystal panel mounted on the above-mentioned backlight unit; A support main surrounding the liquid crystal panel and the backlight unit; A top cover surrounding an edge of the liquid crystal panel; It includes a cover shield provided on the back of the cover bottom.

--Example--

4A and 4B are exploded perspective and front views illustrating the lamp holder according to the present invention.

As shown, the lampholder according to the invention consists of a socket mold and a double ground.

The socket mold 102 has a hexahedron shape having an open top surface, and includes second to fifth shapes formed in a continuous form at a right angle with four sides of the first surface 104 and the first surface 104. Faces 106,108,110,112.

In this case, when the second surface 106 is referred to as a front surface, a partition wall 114 is formed between the second surface 106 and the fourth surface 110 opposite thereto.

The second surface 106, the partition wall 114, and the fourth surface 110 include "∪", "∨", "

An etching pattern is formed. One end of the lamp is positioned at the etching pattern “∪” of the second surface 106, and “∨” of the partition wall 114 and the fourth surface 110.

Is a lead wire (not shown) of the lamp.

At this time, it is characterized in that the portion of the opposite side between the third surface 108 and the fifth surface 112, located between the partition 114 and the fourth surface (110) stepped.

That is, as illustrated in FIG. 4B, the inner side surfaces of the third and fifth surfaces 108 and 112 facing each other of the socket mold 102 may be formed in a stepped form, and the third surface 108 and the third surface may be formed. The separation distance between the five surfaces 112 is to be narrowed.

In this case, the third surface 108 and the fifth surface 112 corresponding to the boundary portion at which the separation distance is different are configured to have a shape having a gentle slope.

In particular, in order to configure the third and fifth surfaces 108 and 112 in a stepped form, the thickness may be varied as illustrated, or the shape may be formed to be stepped.

The double ground portion 120 is configured in such a manner that the first ground portion 130 and the second ground portion 132 having the same shape are side-by-side attached to each other, and the first and second ground portions 130 and 132 are attached to each other. Are composed of the same type of first and second members 134, 138/136, 140, respectively.

That is, when the first and second members 134, 138, 136, and 140 are described in cross-sectional form, the first and second members 134, 138, 136, and 140 may extend from one side of the first horizontal portion a. A ′ and the first horizontal portion a, a ′, respectively. A first vertical portion b.b 'and a second horizontal portion c, c' extending from the first vertical portion b, b 'in a direction opposite to the first horizontal portion a.a' ), A second vertical portion (e, e ') including a first curved portion (d, d') extending from the other side of the second horizontal portion (c, c ') and bent at the center, And second bends f, f 'extending outwardly from the second vertical portions e, e'.

In this case, the first and second members 134 and 136 of the first ground portion 130 are simultaneously attached in a symmetrical form by the third member 138, and the first ground portion 130 and the second contact portion are simultaneously attached. The branch portion 132 has a form in which the first vertical portions b and b 'of the first members 134 and 138 are connected to each other, and at the same time, the first vertical portions b and b' of the second members 136 and 140 are connected to each other. Form.

In this case, a portion G extending from the first curved portion d.d 'to the second curved portion f and f' is designed to be shorter than before, and the second curved portion f and f ' The portion (H) in contact with the socket mold 102 is characterized in that it is formed to be in line contact to minimize the contact area.

To this end, the shape of the second bends f, f 'of the portion H in contact with the socket mold 120 is preferably ""

"Configure to form.

"Of the second bend f, f '

"Shape is, when the lamp lead wire (not shown) is fitted to the ground portion 120 in the state that the ground portion 120 is fitted to the socket mold 102, the second bent portion (f, The elasticity of f ') is increased so that the lead wire can be easily fitted.

In addition, it is designed to have a slope from the portion (G) extending from the first bend to the second bend (f, f ') to continue. In this way, since the upper part of the said double ground part becomes "shape" shape, the lead wire (not shown) of a lamp | ramp tends to settle primarily.

Hereinafter, with reference to the drawings, the process of assembling the holder according to the present invention and the process of fitting the lamp thereto will be described.

5A and 5B are cross-sectional views illustrating a step of inserting a double ground part into a socket mold according to the present invention. (Not shown the third member of the double ground portion)

As shown in FIGS. 5A and 5B, opposite sides 108 and 112 of the socket mold 102 are formed in a stepped shape, and the double ground portion 120 is opened in the socket mold 102. It is inserted and inserted from the bottom (not shown).

At this time, both sides of the second bent portion (f, f ') of the ground portion is first narrowed while passing through the stepped jaw of both sides (108, 112) of the socket mold 102, the first member (both sides of the double ground portion 120) ( 134 and the second member 136 are closely spaced apart, and the separation distance L between both first bends d and d 'is equal to or smaller than the diameter of the lead wire (not shown) formed at one end of the lamp. .

Therefore, when the lead wire is inserted from the upper portion of the double ground portion 120, the lead wire (not shown) is seated in the space formed by the first curved portions d and d 'on both sides of the double ground portion 120. The first bent portion (d, d ') of both sides is in close contact with the form.

At this time, the separation distance of the portion (G) leading from the first bend (d, d ') to the second bend (f, f') should be about 0mm ~ 0.2mm. This value is related to the diameter of the lamp lead wire, for example, the value when the diameter of the lamp lead wire is 0.6 mm to 0.8 mm.

That is, when the separation distance of the ground portion is 0.2mm, the ground portion may be designed such that the relationship between the diameter of the lamp lead wire and the separation distance of the ground portion is 3 to 4: 1.

In this way, there is no inconvenience in fitting the lead wire (not shown) to the ground portion, and the inserted lead wire (not shown) is not separated from the ground portion 120.

As shown, the lamp holder 102 according to the present invention is a double ground portion 120 is inserted through the above-mentioned socket mold 102 and the open portion (not shown) of the bottom of the socket mold (102). It is composed of

The lead wire 142 of the lamp 140 is sandwiched by an automated device between the first and second members 134, 138/136 and 140 on both sides of the double ground part 120.

At this time, unlike the conventional lamp holder according to the present invention because the retainer is omitted instead of the ground portion, the lead wire 142 can be firmly fixed.

Hereinafter, a backlight unit including a lamp holder into which a lamp is inserted and the liquid crystal display module including the same will be described.

7 is an exploded perspective view illustrating a liquid crystal display module including a lamp unit according to the present invention in a backlight unit.

As shown, the liquid crystal display module LCM includes a liquid crystal panel 210, a backlight unit 220, a support main 230, a top case 240, and a cover bottom 250.

The liquid crystal panel 210 is configured to include a liquid crystal layer (not shown) spaced apart from each other by a predetermined distance and injected between the upper and lower substrates A and B facing each other. Although not shown, a thin film transistor (not shown), which is a switching element, is positioned on the lower substrate B, and the gray level of the image is displayed by the turn-on / off driving of the thin film transistor T. In addition, a color filter is positioned on the upper substrate A to combine R, G, and B primary colors, thereby displaying an image close to a natural color.

In addition, the liquid crystal panel 210 includes a gate and a data printed circuit board 215 for supplying a scan signal and an image signal to the lower substrate of the liquid crystal panel 210.

The backlight unit 220 positioned at the rear of the liquid crystal panel 210 to supply light is a direct type in which a plurality of fluorescent lamps 224 are used, and a reflecting sheet 222 is positioned below the fluorescent lamp 224. At both ends, the support side 234 supports the fluorescent lamp 224, and a plurality of optical sheets 226 are stacked on the upper side.

More specifically, both side ends of the fluorescent lamp 224 is fitted to the lamp holder 232, the lamp holder 232 is soldered to the balance PCB 234 to receive a signal.

The lamp holder 232 is inserted into the opening of the support side 234, and the support side 234 is coupled to both side ends of the cover bottom 250 to support / fix the fluorescent lamp 224. .

The liquid crystal panel 210 and the backlight unit 220 are seated on the support main 230, and the support main 230 prevents and supports the flow of the liquid crystal panel 210 and the backlight unit 220.

The top case 240 covers the upper edge of the liquid crystal panel 210 and the side surface of the support main 230 to support and protect the edge of the liquid crystal panel 210 and the side surface of the support main 230.

The cover bottom 250 covers the lower part of the support main 230 to protect the lower part of the liquid crystal display module component described above. The cover bottom 250 is fastened through the support main 230, the top case 240, and a fastening means (not shown) to be modularized.

In the above-described configuration, the lamp holder 232 has a socket mold 260, the inner surface of which is different from the conventional step, and the lead wire of the fluorescent lamp 224 (not shown) is fitted to the socket mold 260 It is characterized by consisting of a double ground portion 262 for fixing.

In the above-described embodiment, the socket mold is required as a means for compressing the double ground part, but if the double ground part itself is made of a metal having high elasticity, the double ground part is not needed without the socket mold. It may be used as a holder.

Therefore, the lamp holder according to the present invention has a structure in which the retainer is omitted in comparison with the prior art, and the ground part is doubled and the inner wall surface of the socket mold is stepped so that the lead wire of the lamp is not connected with the retainer. It can be grounded in a stable form.

Therefore, the parts are omitted, there is an effect that can save the cost, and the process can be omitted by the operator directly participating, such as inserting the retainer has the effect of improving the process yield.

Claims

A plurality of fluorescent lamps having lead wires on both sides;

A lamp holder including a ground part for simultaneously fixing and grounding a lead wire of the fluorescent lamp, the ground part being fitted, and an inner surface contacting the ground part having a protruding end;

Balance PCB to which the ground portion and the lamp holder is fixed

A backlight unit comprising a.

The method of claim 1,

The ground unit is a backlight unit, characterized in that the first and second members having the same shape are integrated in a side by side spaced apart form.

The method of claim 2,

The first and second members each have a first horizontal portion, a first vertical portion extending vertically at the end of the first horizontal portion, and a first curved portion extending vertically from the other side of the second horizontal portion, respectively. And a second bent portion curved outwardly from the second vertical portion, the second vertical portion having a symmetrical shape and being fixed to each other.

The method of claim 3, wherein

And a third member for fixing the first and second members of the ground portion to be spaced apart in a symmetrical shape.

The method of claim 3, wherein

And a distance between the second vertical portions between the first curved portions and the second curved portions of the first member and the second member is 0 mm to 0.2 mm.

The method of claim 3, wherein

And the second bent portion and the socket mold are in line contact to minimize contact area.

The method of claim 6,

The second bend of the portion in contact with the socket mold is " and "

"Backlight unit, characterized in that configured in the shape.

The method of claim 6,

&Quot;" and " of the second bent portion

"A pressure unit is concentrated in the shape to increase the elasticity of the second bent portion so that the lead wire is easily fitted.

The method according to any one of claims 1 to 8,

The socket mold may include a first surface which is a bottom surface, second to fifth surfaces continuously formed at right angles to four sides of the first surface, and when the second surface is faced, And a partition wall disposed between the fourth surfaces, wherein the third and fifth surfaces between the partition wall and the fourth surface contact the second curved portion of the ground portion, and the inner wall is stepped to form a protruding end shape. Backlight unit.

The method according to any one of claims 1 to 9,

The grounding unit is a backlight unit, characterized in that the first and second ground consisting of the first and the second member consisting of a double grounding unit integrally spaced apart side by side.

The method of claim 1,

And a reflecting plate disposed under the fluorescent lamp and an optical member disposed above the fluorescent lamp and scattering light.

A liquid crystal display module comprising the backlight unit according to claim 1,

A liquid crystal panel mounted on the backlight unit;

A support main surrounding the liquid crystal panel and the backlight unit;

A top cover surrounding an edge of the liquid crystal panel;

A cover shield provided on a rear surface of the cover bottom;

Liquid crystal display module comprising a.